prepare for uWSGI 1.9.5 release

More issues reported by Coverity

.gitignore

@@ -0,0 +1,9 @@
+*.o
+*.py[co]
+*.class
+*.jar
+
+/uwsgi
+/uwsgibuild.*
+
+/t/ring/target

.hgtags

@@ -29,3 +29,30 @@ fd8477b6348faf16588106055ca59df1c488f76a 0.9.8.1
 7169ef1d68d3dab4737bcc3f9e082839e5a06cc1 0.9.8.2
 f4d3c4dcd7a63e21fcc9d8d567374c69935178bd 0.9.8.3
 6945ee03c7ea95eb19217ef1e1fb17d9ae26adbc 0.9.9-beta1
+fb168b0b86169219aa9b8e40f0caa6297cf34dbc 0.9.9-rc1
+6aa667612019fcff8e68af9469f73aff6fa378a8 0.9.9-rc2
+376ffd8f190623e5e2521fe9fa64bf03c31e71be 0.9.9
+7048ae11cfc8453c6bb599af3c0dfacd7ebae43c 1.0-rc1
+7a4e021ea7ba2953e474326612c3bb82d6817f0e 1.0-rc2
+4e4e781ef89ac33e71a7e92741d54549240ed156 1.0-rc3
+24f7e260ea345c2cd73e2fd8191dddbd1b039062 1.0-rc4
+043ba93dd69cf6924e98db3cb9a8759cce997367 1.0-rc5
+a2b8f25fd17ed7424d1470a287d0b3144d2a12c8 1.0-rc6
+a3ca2e8e27c5c12c44ba0cacb4de4cb51377f184 1.0-rc7
+365e2514cc19f0366365318f12a1d63113b02924 1.0-rc8
+5da6fe43a8c29056bc9442c684615e11a3699795 1.0-rc9
+af490b8c30f83bc5fb6f3837a760981474647755 1.0-rc10
+3c70927335856883283fe4db448e092cecc0ccdb 1.0
+8fe7bb792399cb6e6a24e20551f4149409660363 1.0.1
+1d1702789710ec1c20613d2490b14f70756e67ec 1.1-rc1
+901f0cb5de36ea907b26d64ac9ce54605ec531d2 1.1-rc2
+ede5c664978bb40e476e8d4a5789562928f28507 1.1-rc3
+ef99144291f06822d026e981d5d856cbec14d867 1.1-rc4
+e1568fd16b7b586cc72deb4dfccbbe64ae0b84df 1.1
+24c8fe5a26e557db41cf1cee45b8964d5885e484 1.2-rc1
+29de0fb320bc0a1ce84972f9f249360e315d3c10 1.2-rc2
+c3cdecbf2bac591336baddd14f9ac22e18d6e200 1.2
+14524da00a8b382dffb1d16a0e70cdf4a946f369 1.3-rc2
+883b946db9038372cb1d76cb1d328a3093140e7b 1.3-rc3
+aeea5a5d2e8b62ad55e23d539e1be02f2b6962af 1.3-rc4
+620e0cb6ccdb0ce27561b4240cb3a0ef4c3527fd 1.3

.travis.yml

@@ -0,0 +1,44 @@
+language: c
+
+compiler:
+  - gcc
+  - clang
+
+script:
+  - echo -e "\n\n>>> Building uWSGI binary"
+  - /usr/bin/python uwsgiconfig.py --build travis
+  - echo -e "\n\n>>> Building python26 plugin"
+  - /usr/bin/python2.6 -V
+  - /usr/bin/python2.6 uwsgiconfig.py --plugin plugins/python base python26
+  - echo -e "\n\n>>> Building python27 plugin"
+  - /usr/bin/python2.7 -V
+  - /usr/bin/python2.7 uwsgiconfig.py --plugin plugins/python base python27
+  - echo -e "\n\n>>> Building python31 plugin"
+  - /usr/bin/python3.1 -V
+  - /usr/bin/python3.1 uwsgiconfig.py --plugin plugins/python base python31
+  - echo -e "\n\n>>> Building python32 plugin"
+  - /usr/bin/python3.2 -V
+  - /usr/bin/python3.2 uwsgiconfig.py --plugin plugins/python base python32
+  - echo -e "\n\n>>> Building python33 plugin"
+  - /usr/bin/python3.3 -V
+  - /usr/bin/python3.3 uwsgiconfig.py --plugin plugins/python base python33
+  - echo -e "\n\n>>> Building rack 1.8.7 plugin"
+  - /usr/bin/ruby1.8 -v
+  - UWSGICONFIG_RUBYPATH=/usr/bin/ruby1.8 /usr/bin/python uwsgiconfig.py --plugin plugins/rack base rack187
+  - echo -e "\n\n>>> Building rack 1.9.1 plugin"
+  - /usr/bin/ruby1.9.1 -v
+  - UWSGICONFIG_RUBYPATH=/usr/bin/ruby1.9.1 /usr/bin/python uwsgiconfig.py --plugin plugins/rack base rack191
+  - echo -e "\n\n>>> Building cgi plugin"
+  - /usr/bin/python uwsgiconfig.py --plugin plugins/cgi base
+  - echo -e "\n\n>>> Building dummy plugin"
+  - /usr/bin/python uwsgiconfig.py --plugin plugins/dummy base
+  - echo -e "\n\n>>> Building done, starting tests"
+  - ./tests/travis.sh
+
+before_install:
+  - sudo add-apt-repository -y ppa:fkrull/deadsnakes
+  - sudo apt-get update -qq
+  - sudo apt-get install -qqyf python2.6-dev python2.7-dev python3.1-dev python3.2-dev python3.3-dev rubygems1.8 ruby1.8-dev ruby1.9.1-dev
+  - sudo apt-get install -qqyf libxml2-dev libpcre3-dev libcap2-dev
+  - sudo apt-get install -qqyf curl
+

CONTRIBUTORS

@@ -12,3 +12,13 @@ Marco Beri, Link I.T. S.p.a.
 Leonid Borisenko
 Cal Leeming, Simplicity Media Ltd
 Luigi Scarso
+Corey Farwell
+Charles Duffy
+Lukas Lalinsky
+Steven Fernandez
+Łukasz Mierzwa
+Roy Marples
+Aarni Koskela
+C Anthony Risinger
+Stephen Pierce
+Mingli Yuan

ChangeLog

@@ -1,510 +0,0 @@
-*** july 2011 ***
-
- * 0.9.8.3 [20110723]
-
-- implemented uwsgi.SymZipImporter to load embedded zip files
-- OSX Lion is officially supported
-- fixed xinetd support (example file added in contrib)
-- suppot for systemd socket activation
-- added --freebind option (Linux only)
-
- * 0.9.8.2 [20110719]
-
-- fixed an ini and yaml parsing bug spotted by Raffaele Colace
-- spooler has been extremely improved
-- new option --chown-socket
-- added uwsgidecorators for elegant uwsgi api access from python
-- the rack plugin is now stable
-- support for embedding config and generic files in the server binary
-- high-performance cache-server
-- accept() is now locked on all threads in the same workers
-- preliminary implementation of hooks in emperor
-- support for C++ in server core
-- tcp port auto-bind
-- implemented workers, workerN and spooler signal target
-- prefork/multithread uwsgi.signal_wait() implementation
-- export uwsgi.node in WSGI vars
-- new option --import (python plugin)
-- support for unlimited number of Linux cgroups
-- broodlord mode
-
-*** june 2011 ***
-
- * 0.9.8.1 [20110625]
-
-- the build system has been improved
-- various threading fixes
-- fix python GIL status after reload
-- new option --propagate-touch
-- fixed uwsgi.sendfile
-- fixed readline() support in wsgi.input
-- fixed dynamic touch reload
-- new option --logto2
-- export %c in config files
-- fixed libyaml support
-- support passing modifiers in subscription system
-- reset random seed in spooler
-- subscribe from a list in a text file
-- allow binding on port 0 (auto-assignment)
-- reset random seed on grunt
-- fix vhost mode for empty hostname
-- fixed python3+virtualenv support
-- tasks are now allowed to chdir() in spooler
-- better zeromq+clustering support
-- clustering has been refactored
-- fixed rpc
-- report correct worker id in cheap mode
-- fixed a fd-leak in attach-daemon
-- use setsid() in attach-daemon
-- zerg mode
-- added psgix.harakiri
-- allows magic vars in sqlite3 config db
-- added UWSGI_FASTROUTER_KEY var
-- slowdown async-queue-is-full messages
-- new option --cron
-- --vassals-start-hook and --vassals-stop-hook
-- the proxy plugin has been removed
-
- * 0.9.8 [20110605]
-
-- support for --callable in virtualhosting mode
-- a NetBSD fix
-- abstract unix socket can be prefixed with \0 (nginx-style)
-- add /lib to the linker in sun-like systems
-- a mercy mode of 5 seconds is enabled by default on SIGINT/SIGQUIT
-
- * 0.9.8-rc4 [20110602]
-
-- fixed REMOTE_ADDR when --protocol=http
-- official support for OpenIndiana
-- added a welcome.py test script
-- new api attribute uwsgi.version_info
-- improved the admin plugin
-- two new management flag for backlog queue monitoring
-- fixed uwsgi_log for bigger loglines
-- new option --early-emperor to allows out-of-jail emperors
-- emperor can now spawn other emperors (sub-emperors)
-- fixed idle mode in single-process
-- fixed solaris iovec
-
-*** may 2011 ***
-
- * 0.9.8-rc3 [20110530]
-
-- snapshotting support
-- fixed python 3.x spooler
-- improvements for grunt processes
-- better abstract unix socket
-- --log-socket allows logging to generic DGRAM sockets
-- a bunch of solaris fixes
-- new option --no-fd-passing for fastrouter
-- --fastrouter-subscription-slot to set the number of slot in subscription server
-- unlimited shared sockets
-- fixed netlink compilation
-- auto-reconnect on emperor+amqp server disconnection
-- various emperor fixes
-- unlimited fastrouter sockets
-- better cgroup support
-- --add-header option allow adding of custom HTTP response headers
-- cheap and idle operational modes
-
-
- * 0.9.8-rc2 [20110521]
-
-- new option --die-on-term
-- fixed touch reload
-- a couple of optimizations for wsgi.input
-- systemd integration
-
- * 0.9.8-rc1 [20110514]
-
-- massive code cleanup and refactoring
-- added vassals loyalty concept
-- fixed virtualhosting with dynamic virtualenv
-- fixed reloading on grand-central-dispatch-enabled OSX
-- improved PSGI support with uGreen and async support
-- improved Rack support with complete fiber+async in ruby 1.9
-- support for JSON config files
-- native multi-protocol support (added fastcgi and http)
-- Mongrel2 support
-- support for templates in vassals
-- various threading fixes
-- gcc-4.6 support
-- support for logging via zeromq
-- support for configuration passed via pipe/stdin
-- pythonpath entries are now unlimited
-- socket entries are unlimited
-- pythonpath can be a glob
-- lazy mode added
-- new language-independent profiling subsystem
-- support for configuration stored in a sqlite3 db
-- allow workers to survive to syslogd death (when --log-syslog is used)
-- fix traceback in Python 3.x
-- support for uwsgi signals in threads
-- plugin autoloading
-- graceful reloading for threads
-- new wsgi.input object
-- support for alternative allocators (tcmalloc and jemalloc)
-
-
-*** april 2011 ***
-
- * 0.9.7.2 [20110406]
-
-- new option --touch-reload <file> to reload the stack on <file> modification
---static-map <mountpoint=documentroot> allows to serve static files
-- fixed --post-limit management
-- disallow empty socket names
-- implemented exception_info WSGI support
-- new options --reload-on-as <n> and --reload-on-rss <n> allows
-to recycle workers when their memory usage is higher than <n> MB
-- fixed syslog support (use --log-syslog[=facility] to enable it)
-- improved plugin loading system
-- added support for RabbitMQ as event dispatcher for the Emperor
-- fixed FreeBSD memory report
-- PSGI plugin can be compiled without ithreads
-- various Emperor fixes
-- fixed a regression with setgroups()
-- support for shared sockets (used in jails within network namespaces)
-
-*** march 2011 ***
-
- * 0.9.7.1 [20110326]
-
-- fixed python stackless support
-- added persistence for queue
-- forbid daemonizing in vassal mode
-- modifier1 30 is available again
-- allow python modules to be mapped/aliased via http
-- added --pidfile2 and --logfile-chown
-- added UWSGI_CACHE_GET dynamic variable
-- 304/If-Modified-Since support for --check-static
-- option --check-cache for integrated caching
-- option --map-socket to assign specific workers to socket
-- fixed unix fd passing on older OSX versions
-- fixed post-buffering without pep3333-input
-- fixed python threading without uwsgi cores
-- support for Linux network namespace
-- build with sys.abiflags if necessary
-
-
- * 0.9.7 [20110317]
-
-- fixed psgi compilation on GNU systems
-- improved --pep3333-input
-- better error reporting on failed open/fopen
-- fixed uGreen
-- added greenlet support
-- various solaris fixes
-- new help system
-- updated async support
-- fixed uwsgi.cache_get in python
-
- * 0.9.7-rc3 [20110312]
-
-- added support for persistent cache (--cache-store <filename>)
-- less verbose file monitoring
-- fixed a race condition in emperor startup
-- fixed erlang empty list encoding
-- improved snmp support
-- fixed cache modifier 111 for 3 and 4
-- preliminary cpu-affinity support (Linux only)
-- fixed ldap support
-- auto-configure ldap compilation
-- added --allowed-modifiers (allow only a subset of modifiers)
-- fixed a bug with getopt_long
-
- * 0.9.7-rc2 [20110309]
-
-- added cron-like interface to signal framework
-- improved Linux namespaces support
-- fixed multithreading + --max-requests
-- added support for reference in configuration files
-
- * 0.9.7-rc1 [20110307]
-
-- export %v in emperor mode
-- fixed signal race condition in server reload
-- fixed http router post handling bug
-- added uwsgi.erlang_register_process in pyerl plugin
-- fixed unix socket inherit
-- fixed linux namespace support in recent kernel/gcc
-- ported threading to python 3.2
-- add build date to uWSGI startup info
-- do not allow clustering without defining a socket
-- kill all the gateways/daemons on startup errors
-- fixed vacuum after chdir()
-- fixed gateways reload
-- re-added support for OpenBSD and NetBSD
-- fixed post-buffering in python
-- use erlang binary for python string
-- fixed memory leak in pyerl plugin
-- removed broken log rotation (post-poned)
-- fixed no_argument options in ini and yaml parsing
-
- * 0.9.7-beta1 [20110301]
-
-- fully modular re-design
-- advanced build system with presets
-- threading support
-- emperor mode for massive auto-hosting
-- caching subsystem
-- message queue (even stacked) support
-- improved server reloading system
-- support for Linux Cgroups and Namespaces
-- integrated upload progress
-- Clustering infrastructure via multicast, broadcast or subscriptions
-- support for attaching/monitoring external apps to the master process
-- improved virtualhosting mode
-- extremely improved Python support with better usage of multiple interpreters
-- improved multiple apps support
-- Production ready, evented HTTP router/proxy/load-balancer
-- Production ready, evented uwsgi router/proxy/load-balancer
-- new Erlang stack
-- Internal signal subsystem
-- support for RubyOnRails and Rack apps
-- A huge series of fixes and optimizations
-
-*** february 2011 ***
-
- * 0.9.6.8 [20110207]
-
-- fixed a bug when using --limit-as
-- fixed a erlang buffer initialization
-- added --ignore-sigpipe
-- added --master-as-root
-
-*** january 2011 ***
-
- * 0.9.6.7 [20110130]
-
-- a huge amount of async optimizations and fixes
-- --logdate takes an optional strftime-like value
-- follow $PATH on reloading
-- uwsgi.core is exported in WSGI env
-- uwsgi.log() respect for --logdate
-- initial banner respect for --logdate
-- fixed --post-buffering
-- default listen backlog queue is now 100
-- Python 3 support is no more marked as experimental
-- Python 3.2 support
-- new option --chroot-reload will force a reload of the uWSGI stack after a chroot
-- fixed a typo in INI parsing
-
-*** december 2010 ***
-
- * 0.9.6.6 [20101230]
-
-- support for YAML configuration files
-- backported python module aliasing from 0.9.7-dev
-- better apache2 module (support for SetEnv directive, fixed REQUEST_URI and improved connection handling)
-- uwsgi.post_fork_hook implementation (to execute function after fork()) (thanks George Kollias)
-- option --gid calls setgroups() after setgid() (thanks Jorge Cardona)
-- fixed uGreen compilation (and uGreen is now built by default)
-- fixed timeout and thundering herd problem in async modes (many thanks to Test157 for giving us a good async-test-app)
-- disable TCP_INFO in older Linux kernels (thanks Bo Shi)
-- enable TCP_INFO in FreeBSD (limited usage due to FreeBSD kernel support)
-- fixed static virtualhosting mode using xml files (thanks Guido Notari of Link I.T. spa)
-- new option --close-on-exec (thanks Jean-Baptiste Quenot)
-- use HTTP_HOST var (and fallback to SERVER_NAME) in virtual hosting mode
-- fixed a buffer overflow in automatic socket_name allocation (spotted by Riccardo Magliocchetti)
-- Official support for Nexenta
-
-
-*** september 2010 ***
-
- * 0.9.6.5 [20100929]
-
-- PEP 3333 support
-- fix --pythonpath with --wsgi-file
-- x-wsgiorg.uwsgi.version renamed to uwsgi.version
-
- * 0.9.6.4 [20100925]
-
-- fix a stupid bug in conditional logging backport
-
- * 0.9.6.3 [20100925]
-
-- fix a buffer overflow in .ini parsing (it throws a glibc error on malloc)
-- backport of conditional logging from 0.9.7-dev
-- backport of backlog queue monitor from 0.9.7-dev (only Linux)
-
- * 0.9.6.2 [20100915]
-
-- fix a regression in virtual hosting mode
-- fix pythonpath usage in --ini and --ini-paste
-- new uwsgi packet var: UWSGI_CHDIR
-
- * 0.9.6.1 [20100912]
-
-- print the request uri during SIGPIPE or HARAKIRI
-- added SIGUSR2 support (it will print the current running request, if available)
-- protocol parsing optimization
-- fixed --logto support
-- new --eval option allows inline definition of WSGI script
-- support for defining WSGI script in xml using CDATA
-- allow --pp as --pythonpath shortcut
-- various spooler optimizations and fixes
-- added -O2 optimization by default
-- added uwsgi.is_a_reload commodity function
-- .ini file support fix
-- SNMP agent fix
-- support for subprocesses generated by master
-- fix a regression in SCRIPT_NAME handling
-- Haiku official support
-- gcc 2.95 support
-- dynamic app management optimizations
-- export x-wsgiorg.uwsgi.version in WSGI env
- 
-*** august 2010 ***
-
- * 0.9.6 [20100829]
-
-- better handling of SCRIPT_NAME
-- vacuum option for deleting unix sockets and pidfiles after usage
-- advanced XML configuration
-- new configuration systems: INI files and LDAP
-- embedded HTTP server for development/testing
-- better signal handling
-- PSGI plugin improved
-- usability fixes and new commodities options for root startup
-- grunt processes (detached workers)
-- preliminary integrated virtualhosting mode
-- new option catch-exceptions can redirect python exceptions to your browser
-- logging improvements (--logto and --logdate options)
-- Full PEP 333 compliant usage of wsgi.file_wrapper
-- re-initialize random seed after every fork() [security fix]
-- fix Spooler's usage of stdin
-- export WSGI environment in uwsgi.env (for doing evil things)
-- logsize tracking (uwsgi.logsize) for future embedded log rotation
-
-*** july 2010 ***
- 
- * 0.9.5.4 [20100706]
-	
-*** june 2010 ***
-
- * 0.9.5.3 [20100628]
-
-- fixed linux x86_64 compilation (sorry)
-
- * 0.9.5.2 [20100626] *
-
-- fixed a request parsing bug
-- applied debian fixes
-- fixed multiple interpreter sys.argv
-- improved --chmod-socket
-- fixed uid 0 SIGHUP
-- updated nginx and apache modules
-- updated PSGI, lua and example plugin
-- fixed --pyargv with python 3.x
-- improved plugin build system
-
-*** may 2010 ***
-
- * 0.9.5.1 [20100519] *
-
-- fixed paste support
-- added a new modifier (22)
-- full support for configuration via environment variables
-- nginx_string option in nginx module
-- fix for harakiri without master
-- backported unladen swallow support for 0.9.6-dev
-- fixed address space limit detection via getrlimit()
-- http body buffering implementation
-- added --prio option (to set priority)
-- added --post-limit to limit the size of uploads
-- added --logto option to allow udp logging without daemonizing
-- applied Gentoo's packagers fixes for build system
-
- * 0.9.5 [20100501] *
-
-- hook based request/modifier management
-- plugin support via dlopen
-- on-the-fly management flag
-- integrated proxy
-- logging via udp
-- improved spooler for cron-like apps
-- async support
-- green thread platform (uGreen) on top of the async mode
-- transparent Erlang integration
-- embedded snmp agent
-- nagios mode
-- improved python 3.x support
-- improved xml configuration
-- new build system
-- address space usage limiting
-- lot of portability fixes
-- lot of optimizations and code refactoring
-
-
-*** april 2010 ***
-
- * Fourth Maintenance release [20100427] *
-
-- backported non-yielding app optimization from 0.9.5
-- backported udp logging from 0.9.5
-- backported uwsgi_error() from 0.9.5 (no more dumb perror())
-- fix a rare (but possible) segmentation fault
-- added --version
-- updated apache2 module
-
-*** march 2010 ***
-
- * Third Maintenance release [20100310] *
-
-- fix sendfile on 64bit
-- include setup.py
-
-*** february 2010 ***
- * Maintenance release *
-
-- better support for NetBSD
-- threading fix for FreeBSD
-- sendfile portability fixes 
-- new makefiles
-- example app for testing static file serving
-- fixes for ROCK_SOLID mode
-
-*** january 2010 ***
-
-- Integrated Spooler
-- better error management
-- long options
-- clustering functions
-- experimental lighttpd module
-- official support for OpenBSD and OpenSolaris
-- FastFuncs
-- new functions for embedded module
-- reliable harakiri
-- better Makefiles
-- python threads support in master process
-- proper timeout handling in apache2 module
-- endianess fixes all over the place
-- paste support
-- Django app for managing and monitoring the uWSGI server
-- options for changin uid/gid and chrooting when run by root
-- lot of bugfixes and optimizations
-
-*** 20091129 Version 0.9.3 ***
-
-- Nginx 0.7.x module
-- configuration via python module
-- support (non-standard) for Python 3.x
-- Twisted client resource adapter
-- graceful restart of worker processes and hot-plug substitution/upgrade of the uWSGI server
-- shared memory area to share data between workers/processes
-- Tomcat handler
-- support for virtualenv
-- tons of bugfixes and optimizations
-
-*** 20090829 Version 0.9.2 ***
-
-- TCP support
-- configurable internal timeout (socket/poll)
-- Cherokee handler
-- code refactoring
-- Makefiles
-- customizable harakiri handler (put an harakiri(environ, start_response) function in your wsgi script)
-- limit requests per worker
-- a lot of bugfix and optimizations

Makefile

@@ -3,3 +3,6 @@ all:
 
 clean:
 	python uwsgiconfig.py --clean
+
+check:
+	python uwsgiconfig.py --check

Makefile.Py24

@@ -1,2 +0,0 @@
-all:
-	python2.4 uwsgiconfig.py --build

Makefile.Py25

@@ -1,2 +0,0 @@
-all:
-	python2.5 uwsgiconfig.py --build

Makefile.Py26

@@ -1,2 +0,0 @@
-all:
-	python2.6 uwsgiconfig.py --build

Makefile.Py27

@@ -1,2 +0,0 @@
-all:
-	python2.7 uwsgiconfig.py --build

Makefile.Py30

@@ -1,2 +0,0 @@
-all:
-	python3.0 uwsgiconfig.py --build

Makefile.Py31

@@ -1,2 +0,0 @@
-all:
-	python3.1 uwsgiconfig.py --build

Makefile.Py32

@@ -1,2 +0,0 @@
-all:
-	python3.2 uwsgiconfig.py --build

Makefile.PyLua

@@ -1,2 +0,0 @@
-all:
-	python uwsgiconfig.py --build pylua

README

@@ -1,3 +1,3 @@
 surprise i am empty !
 
-Look in the online documentation on http://projects.unbit.it/uwsgi/
+Look in the online documentation on https://uwsgi-docs.readthedocs.org/en/latest/

apache2/mod_Ruwsgi.c

@@ -160,20 +160,35 @@ static int uwsgi_map_location(request_rec *r)
 	return DECLINED;
 }
 
-static void log_err(const char *file, int line, request_rec *r,
+
+#if AP_MODULE_MAGIC_AT_LEAST(20111130,0)
+static void log_err(const char *file, int line, int ami, request_rec *r,
 		apr_status_t status, const char *msg)
 {
+	ap_log_rerror(file, line, APLOG_MODULE_INDEX, APLOG_ERR, status, r, "uwsgi: %s", msg);
+#else
+static void log_err(const char *file, int line, request_rec *r,
+                apr_status_t status, const char *msg)
+{
+
 	ap_log_rerror(file, line, APLOG_ERR, status, r, "uwsgi: %s", msg);
+#endif
 }
 
-static void log_debug(const char *file, int line, request_rec *r, const
+#if AP_MODULE_MAGIC_AT_LEAST(20111130,0)
+static void log_debug(const char *file, int line, int ami, request_rec *r, const
 		char *msg)
 {
 	/*
 	   ap_log_rerror(file, line, APLOG_DEBUG, APR_SUCCESS, r, msg);
 	   ap_log_rerror(file, line, APLOG_WARNING, APR_SUCCESS, r, "uwsgi: %s", msg);
 	   */
+	ap_log_rerror(file, line, APLOG_MODULE_INDEX, APLOG_DEBUG, APR_SUCCESS, r, "uwsgi: %s", msg);
+#else
+static void log_debug(const char *file, int line, request_rec *r, const
+		char *msg) {
 	ap_log_rerror(file, line, APLOG_DEBUG, APR_SUCCESS, r, "uwsgi: %s", msg);
+#endif
 }
 
 /* buffered socket implementation (buckets are overkill) */
@@ -412,7 +427,11 @@ send_headers(request_rec *r, struct sockbuff *s)
 	apr_table_t *t;
 	apr_status_t rv = 0;
 	apr_port_t  port = 0;
+#if AP_MODULE_MAGIC_AT_LEAST(20111130,0)
+	GET_PORT(port, r->useragent_addr);
+#else
 	GET_PORT(port, r->connection->remote_addr);
+#endif
 	uwsgi_cfg *cfg = our_dconfig(r);
 
 	log_debug(APLOG_MARK,r, "sending headers");
@@ -430,7 +449,11 @@ send_headers(request_rec *r, struct sockbuff *s)
 
 	add_header(t, "REQUEST_METHOD", (char *) r->method);
 	add_header(t, "QUERY_STRING", r->args ? r->args : "");
+#if AP_MODULE_MAGIC_AT_LEAST(20111130,0)
+	add_header(t, "SERVER_SOFTWARE", ap_get_server_description());
+#else
 	add_header(t, "SERVER_SOFTWARE", ap_get_server_version());
+#endif
 	add_header(t, "SERVER_ADMIN", r->server->server_admin);
 	add_header(t, "SERVER_NAME", (char *) ap_get_server_name(r));
 	add_header(t, "SERVER_PORT", apr_psprintf(r->pool, "%u",ap_get_server_port(r)));
@@ -438,7 +461,11 @@ send_headers(request_rec *r, struct sockbuff *s)
 	add_header(t, "SERVER_PROTOCOL", r->protocol);
 
 	add_header(t, "REQUEST_URI", original_uri(r));
+#if AP_MODULE_MAGIC_AT_LEAST(20111130,0)
+	add_header(t, "REMOTE_ADDR", r->useragent_ip);
+#else
 	add_header(t, "REMOTE_ADDR", r->connection->remote_ip);
+#endif
 	add_header(t, "REMOTE_PORT", apr_psprintf(r->pool, "%d", port));
 	add_header(t, "REMOTE_USER", r->user);
 	add_header(t, "DOCUMENT_ROOT", (char *) ap_document_root(r));

apache2/mod_proxy_uwsgi.c

@@ -0,0 +1,464 @@
+/*
+        
+*** mod_proxy_uwsgi ***
+
+Copyright 2009-2013 Unbit S.a.s. <info@unbit.it>
+     
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+
+To build:
+
+apxs2 -i -c mod_proxy_uwsgi.c
+
+To use:
+
+LoadModule proxy_uwsgi_module /usr/lib/apache2/modules/mod_proxy_uwsgi.so
+ProxyPass / uwsgi://127.0.0.1:3031/
+
+Docs:
+
+http://uwsgi-docs.readthedocs.org/en/latest/Apache.html#mod-proxy-uwsgi
+
+*/
+#define APR_WANT_MEMFUNC
+#define APR_WANT_STRFUNC
+#include "apr_strings.h"
+#include "apr_hooks.h"
+#include "apr_optional_hooks.h"
+#include "apr_buckets.h"
+
+#include "httpd.h"
+#include "http_config.h"
+#include "http_log.h"
+#include "http_protocol.h"
+#include "http_request.h"
+#include "util_script.h"
+
+#include "mod_proxy.h"
+
+
+#define UWSGI_SCHEME "uwsgi"
+#define UWSGI_DEFAULT_PORT 3031
+
+module AP_MODULE_DECLARE_DATA proxy_uwsgi_module;
+
+
+static int uwsgi_canon(request_rec *r, char *url)
+{
+    char *host, sport[sizeof(":65535")];
+    const char *err, *path;
+    apr_port_t port = UWSGI_DEFAULT_PORT;
+
+    if (strncasecmp(url, UWSGI_SCHEME "://", sizeof(UWSGI_SCHEME) + 2)) {
+        return DECLINED;
+    }
+    url += sizeof(UWSGI_SCHEME); /* Keep slashes */
+
+    err = ap_proxy_canon_netloc(r->pool, &url, NULL, NULL, &host, &port);
+    if (err) {
+        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+                      "error parsing URL %s: %s", url, err);
+        return HTTP_BAD_REQUEST;
+    }
+
+    apr_snprintf(sport, sizeof(sport), ":%u", port);
+
+    if (ap_strchr(host, ':')) { /* if literal IPv6 address */
+        host = apr_pstrcat(r->pool, "[", host, "]", NULL);
+    }
+
+    path = ap_proxy_canonenc(r->pool, url, strlen(url), enc_path, 0,
+                             r->proxyreq);
+    if (!path) {
+        return HTTP_BAD_REQUEST;
+    }
+
+    r->filename = apr_pstrcat(r->pool, "proxy:" UWSGI_SCHEME "://", host, sport, "/",
+                              path, NULL);
+
+    return OK;
+}
+
+
+static int uwsgi_send(proxy_conn_rec *conn, const char *buf, apr_size_t length,
+                   request_rec *r)
+{
+    apr_status_t rv;
+    apr_size_t written;
+
+    while (length > 0) {
+        written = length;
+        if ((rv = apr_socket_send(conn->sock, buf, &written)) != APR_SUCCESS) {
+            ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
+                          "sending data to %s:%u failed",
+                          conn->hostname, conn->port);
+            return HTTP_SERVICE_UNAVAILABLE;
+        }
+
+        /* count for stats */
+        conn->worker->s->transferred += written;
+        buf += written;
+        length -= written;
+    }
+
+    return OK;
+}
+
+
+/*
+ * Send uwsgi header block
+ */
+static int uwsgi_send_headers(request_rec *r, proxy_conn_rec *conn)
+{
+    char *buf, *ptr;
+
+    const apr_array_header_t *env_table;
+    const apr_table_entry_t *env;
+
+    int j;
+
+    apr_size_t headerlen = 4;
+    uint16_t pktsize, keylen, vallen;
+
+    ap_add_common_vars(r);
+    ap_add_cgi_vars(r);
+
+    // this is not a security problem (in Linux) as uWSGI destroy the env memory area readable in /proc
+    // and generally if you host untrusted apps in your server and allows them to read others uid /proc/<pid>
+    // files you have higher problems...
+    const char *auth = apr_table_get(r->headers_in, "Authorization");
+    if (auth) {
+        apr_table_setn(r->subprocess_env, "HTTP_AUTHORIZATION", auth); 
+    }
+
+    const char *script_name = apr_table_get(r->subprocess_env, "SCRIPT_NAME");
+    const char *path_info = apr_table_get(r->subprocess_env, "PATH_INFO");
+
+    if (script_name && path_info) {
+        if (strcmp(path_info, "/")) {
+            apr_table_set(r->subprocess_env, "SCRIPT_NAME", apr_pstrndup(r->pool, script_name, strlen(script_name)-strlen(path_info)));
+	}
+        else {
+            if (!strcmp(script_name, "/")) {
+                apr_table_set(r->subprocess_env, "SCRIPT_NAME", "");
+            }
+        }
+    }
+
+    env_table = apr_table_elts(r->subprocess_env);
+    env = (apr_table_entry_t *)env_table->elts;
+
+    for (j = 0; j < env_table->nelts; ++j) {
+        headerlen += 2 + strlen(env[j].key) + 2 + strlen(env[j].val) ;
+    }
+
+    ptr = buf = apr_palloc(r->pool, headerlen);
+
+    ptr+=4;
+
+    for (j = 0; j < env_table->nelts; ++j) {
+	keylen = strlen(env[j].key);
+	*ptr++= (uint8_t) (keylen & 0xff);
+	*ptr++= (uint8_t) ((keylen >> 8)  & 0xff);
+	memcpy(ptr, env[j].key, keylen) ; ptr+=keylen;
+
+	vallen = strlen(env[j].val);
+	*ptr++= (uint8_t) (vallen & 0xff);
+	*ptr++= (uint8_t) ((vallen >> 8)  & 0xff);
+	memcpy(ptr, env[j].val, vallen) ; ptr+=vallen;
+    }
+
+    pktsize = headerlen-4;
+
+    buf[0] = 0;
+    buf[1] = (uint8_t) (pktsize & 0xff);
+    buf[2] = (uint8_t) ((pktsize >> 8) & 0xff);
+    buf[3] = 0;
+
+    return uwsgi_send(conn, buf, headerlen, r);
+}
+
+
+static int uwsgi_send_body(request_rec *r, proxy_conn_rec *conn)
+{
+    if (ap_should_client_block(r)) {
+        char *buf = apr_palloc(r->pool, AP_IOBUFSIZE);
+        int status;
+        apr_size_t readlen;
+
+        readlen = ap_get_client_block(r, buf, AP_IOBUFSIZE);
+        while (readlen > 0) {
+            status = uwsgi_send(conn, buf, readlen, r);
+            if (status != OK) {
+                return HTTP_SERVICE_UNAVAILABLE;
+            }
+            readlen = ap_get_client_block(r, buf, AP_IOBUFSIZE);
+        }
+        if (readlen == -1) {
+            ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+                          "receiving request body failed");
+            return HTTP_INTERNAL_SERVER_ERROR;
+        }
+    }
+
+    return OK;
+}
+
+#if AP_MODULE_MAGIC_AT_LEAST(20111130,0)
+static request_rec *ap_proxy_make_fake_req(conn_rec *c, request_rec *r)
+{
+    apr_pool_t *pool;
+    request_rec *rp;
+
+    apr_pool_create(&pool, c->pool);
+
+    rp = apr_pcalloc(pool, sizeof(*r));
+
+    rp->pool            = pool;
+    rp->status          = HTTP_OK;
+
+    rp->headers_in      = apr_table_make(pool, 50);
+    rp->subprocess_env  = apr_table_make(pool, 50);
+    rp->headers_out     = apr_table_make(pool, 12);
+    rp->err_headers_out = apr_table_make(pool, 5);
+    rp->notes           = apr_table_make(pool, 5);
+
+    rp->server = r->server;
+    rp->log = r->log;
+    rp->proxyreq = r->proxyreq;
+    rp->request_time = r->request_time;
+    rp->connection      = c;
+    rp->output_filters  = c->output_filters;
+    rp->input_filters   = c->input_filters;
+    rp->proto_output_filters  = c->output_filters;
+    rp->proto_input_filters   = c->input_filters;
+    rp->useragent_ip = c->client_ip;
+    rp->useragent_addr = c->client_addr;
+
+    rp->request_config  = ap_create_request_config(pool);
+    proxy_run_create_req(r, rp);
+
+    return rp;
+}
+#endif
+
+
+static int uwsgi_response(request_rec *r, proxy_conn_rec *backend, proxy_server_conf *conf)
+{
+
+	char buffer[HUGE_STRING_LEN];
+	const char *buf;
+	char *value, *end;
+	int len;
+	apr_status_t rc;
+	conn_rec *c = r->connection;
+	apr_off_t readbytes;
+	apr_status_t rv;
+	apr_bucket *e;
+	apr_read_type_e mode = APR_NONBLOCK_READ;
+
+	request_rec *rp = ap_proxy_make_fake_req(backend->connection, r);
+	rp->proxyreq = PROXYREQ_RESPONSE;
+
+	apr_bucket_brigade *bb = apr_brigade_create(r->pool, c->bucket_alloc);
+
+	len = ap_getline(buffer, sizeof(buffer), rp, 1);
+
+	if (len <= 0) {
+		// oops
+		return HTTP_INTERNAL_SERVER_ERROR;
+	}
+
+	backend->worker->s->read += len;
+
+	if (!apr_date_checkmask(buffer, "HTTP/#.# ###*") || len >= sizeof(buffer)-1) {
+		// oops
+		return HTTP_INTERNAL_SERVER_ERROR;
+	}
+
+        char keepchar = buffer[12];
+        buffer[12] = '\0';
+        r->status = atoi(&buffer[9]);
+
+        if (keepchar != '\0') {
+                buffer[12] = keepchar;
+        } else {
+                /* 2616 requires the space in Status-Line; the origin
+                 * server may have sent one but ap_rgetline_core will
+                 * have stripped it. */
+                buffer[12] = ' ';
+                buffer[13] = '\0';
+            }
+        r->status_line = apr_pstrdup(r->pool, &buffer[9]);
+
+		// start parsing headers;
+		while ((len = ap_getline(buffer, sizeof(buffer), rp, 1)) > 0) {
+			value = strchr(buffer, ':');
+			// invalid header skip
+			if (!value) continue;
+			*value = '\0';
+        		++value;
+        		while (apr_isspace(*value)) ++value; 
+        		for (end = &value[strlen(value)-1]; end > value && apr_isspace(*end); --end) *end = '\0';
+			apr_table_add(r->headers_out, buffer, value);
+		}
+
+
+	if ((buf = apr_table_get(r->headers_out, "Content-Type"))) {
+                ap_set_content_type(r, apr_pstrdup(r->pool, buf));
+            }
+	
+	for(;;) {
+		rv = ap_get_brigade(rp->input_filters, bb,
+                                        AP_MODE_READBYTES, mode,
+                                        conf->io_buffer_size);
+		if (APR_STATUS_IS_EAGAIN(rv)
+                        || (rv == APR_SUCCESS && APR_BRIGADE_EMPTY(bb))) {
+			e = apr_bucket_flush_create(c->bucket_alloc);
+			APR_BRIGADE_INSERT_TAIL(bb, e);
+			if (ap_pass_brigade(r->output_filters, bb) || c->aborted) {
+				break;
+			}
+			apr_brigade_cleanup(bb);
+			mode = APR_BLOCK_READ;
+			continue;
+		}
+		else if (rv == APR_EOF) {
+			break;
+		}
+		else if (rv != APR_SUCCESS) {
+			ap_proxy_backend_broke(r, bb);
+			ap_pass_brigade(r->output_filters, bb);
+		}
+
+		mode = APR_NONBLOCK_READ;
+		apr_brigade_length(bb, 0, &readbytes);
+		backend->worker->s->read += readbytes;
+		ap_pass_brigade(r->output_filters, bb);
+		apr_brigade_cleanup(bb);
+	}
+	e = apr_bucket_eos_create(c->bucket_alloc);
+	APR_BRIGADE_INSERT_TAIL(bb, e);
+        ap_pass_brigade(r->output_filters, bb);
+
+	apr_brigade_cleanup(bb);
+
+    return OK;
+}
+
+static int uwsgi_handler(request_rec *r, proxy_worker *worker,
+                        proxy_server_conf *conf, char *url,
+                        const char *proxyname, apr_port_t proxyport)
+{
+    int status;
+    proxy_conn_rec *backend = NULL;
+    apr_pool_t *p = r->pool;
+    apr_uri_t *uri = apr_palloc(r->pool, sizeof(*uri));
+    char server_portstr[32];
+
+    if (strncasecmp(url, UWSGI_SCHEME "://", sizeof(UWSGI_SCHEME) + 2)) {
+        ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+                      "declining URL %s", url);
+        return DECLINED;
+    }
+
+    // ADD PATH_INFO
+#if AP_MODULE_MAGIC_AT_LEAST(20111130,0)
+    size_t w_len = strlen(worker->s->name);
+#else
+    size_t w_len = strlen(worker->name);
+#endif
+    char *u_path_info = r->filename + 6 + w_len;
+    int delta = 0;
+    if (u_path_info[0] != '/') {
+        delta = 1;
+    }
+    int decode_status = ap_unescape_url(url+w_len-delta);
+    if (decode_status) {
+       ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+                      "unable to decode uri: %s",
+                      url+w_len-delta);
+        return HTTP_INTERNAL_SERVER_ERROR;
+    }
+    apr_table_add(r->subprocess_env, "PATH_INFO", url+w_len-delta);
+
+
+    /* Create space for state information */
+    status = ap_proxy_acquire_connection(UWSGI_SCHEME, &backend, worker,
+                                         r->server);
+    if (status != OK) {
+        goto cleanup;
+    }
+    backend->is_ssl = 0;
+
+    /* Step One: Determine Who To Connect To */
+    status = ap_proxy_determine_connection(p, r, conf, worker, backend,
+                                           uri, &url, proxyname, proxyport,
+                                           server_portstr, sizeof(server_portstr));
+    if (status != OK) {
+        goto cleanup;
+    }
+
+
+    /* Step Two: Make the Connection */
+    if (ap_proxy_connect_backend(UWSGI_SCHEME, backend, worker, r->server)) {
+        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+                      "failed to make connection to backend: %s:%u",
+                      backend->hostname, backend->port);
+        status = HTTP_SERVICE_UNAVAILABLE;
+        goto cleanup;
+    }
+
+    /* Step Three: Create conn_rec */
+    if (!backend->connection) {
+	if ((status = ap_proxy_connection_create(UWSGI_SCHEME, backend,
+						r->connection, r->server)) != OK)
+		goto cleanup;
+    }
+
+    /* Step Four: Process the Request */
+    if (   ((status = ap_setup_client_block(r, REQUEST_CHUNKED_ERROR)) != OK)
+        || ((status = uwsgi_send_headers(r, backend)) != OK)
+        || ((status = uwsgi_send_body(r, backend)) != OK)
+        || ((status = uwsgi_response(r, backend, conf)) != OK)) {
+        goto cleanup;
+    }
+
+cleanup:
+    if (backend) {
+        backend->close = 1; /* always close the socket */
+        ap_proxy_release_connection(UWSGI_SCHEME, backend, r->server);
+    }
+    return status;
+}
+
+
+static void register_hooks(apr_pool_t *p)
+{
+    proxy_hook_scheme_handler(uwsgi_handler, NULL, NULL, APR_HOOK_FIRST);
+    proxy_hook_canon_handler(uwsgi_canon, NULL, NULL, APR_HOOK_FIRST);
+}
+
+
+module AP_MODULE_DECLARE_DATA proxy_uwsgi_module = {
+    STANDARD20_MODULE_STUFF,
+    NULL,		/* create per-directory config structure */
+    NULL,		/* merge per-directory config structures */
+    NULL,		/* create per-server config structure */
+    NULL,		/* merge per-server config structures */
+    NULL,		/* command table */
+    register_hooks	/* register hooks */
+};

apache2/mod_uwsgi.c

@@ -2,7 +2,7 @@
         
 *** uWSGI/mod_uwsgi ***
 
-Copyright 2009-2010 Unbit S.a.s. <info@unbit.it>
+Copyright 2009-2013 Unbit S.a.s. <info@unbit.it>
      
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
@@ -37,11 +37,18 @@ LoadModule uwsgi_module <path_of_apache_modules>/mod_uwsgi.so
 
 */
 
+#include <unistd.h>
+#include <ctype.h>
 #include "apr_strings.h"
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
 #include "httpd.h"
 #include "http_core.h"
+#include "http_protocol.h"
 #include "http_config.h"
 #include "http_log.h"
+#include "util_script.h"
 
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -73,6 +80,7 @@ typedef struct {
 	char scheme[9];
 	int cgi_mode ;
 	int max_vars;
+	int empty_remote_user;
 } uwsgi_cfg;
 
 module AP_MODULE_DECLARE_DATA uwsgi_module;
@@ -162,6 +170,7 @@ static void *uwsgi_server_config(apr_pool_t *p, server_rec *s) {
 	c->cgi_mode = 0 ;
 	c->max_vars = 128;
 	c->script_name[0] = 0;
+	c->empty_remote_user = 1;
 
 	return c;
 }
@@ -177,6 +186,7 @@ static void *uwsgi_dir_config(apr_pool_t *p, char *dir) {
 	c->modifier2 = 0 ;
 	c->cgi_mode = 0 ;
 	c->max_vars = 128;
+	c->empty_remote_user = 1;
 	c->script_name[0] = 0;
 	if (dir) {
 		if (strcmp(dir, "/")) {
@@ -343,9 +353,21 @@ static int uwsgi_handler(request_rec *r) {
 	vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "SERVER_PORT", apr_psprintf(r->pool, "%u",ap_get_server_port(r)), &pkt_size) ;
 	vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "SERVER_PROTOCOL", r->protocol, &pkt_size) ;
 	vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "REQUEST_URI", r->unparsed_uri, &pkt_size) ;
+#if AP_MODULE_MAGIC_AT_LEAST(20111130,0)
+	vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "REMOTE_ADDR", r->useragent_ip, &pkt_size) ;
+#else
 	vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "REMOTE_ADDR", r->connection->remote_ip, &pkt_size) ;
-	vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "REMOTE_USER", r->user ? r->user : "", &pkt_size) ;
+#endif
+
+	// 
 	if (r->user) {
+		vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "REMOTE_USER", r->user, &pkt_size) ;
+	}
+	else if (c->empty_remote_user) {
+		vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "REMOTE_USER", "", &pkt_size) ;
+	}
+
+	if (ap_auth_type(r) != NULL) {
 		vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "AUTH_TYPE", (char *) ap_auth_type(r), &pkt_size) ;
 	}
 	vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "DOCUMENT_ROOT", (char *) ap_document_root(r), &pkt_size) ;
@@ -354,7 +376,8 @@ static int uwsgi_handler(request_rec *r) {
 		vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "UWSGI_SCHEME", c->scheme, &pkt_size) ;
 	}
 
-	if (c->script_name[0] != 0) {
+	// SCRIPT_NAME = "/" is like SCRIPT_NAME = ""
+	if (c->script_name[0] != 0 && !(c->script_name[0] == '/' && c->script_name[1] == 0)) {
 		vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "SCRIPT_NAME", c->script_name, &pkt_size) ;
 		vecptr = uwsgi_add_var(uwsgi_vars, vecptr, r, "PATH_INFO", r->uri+strlen(c->script_name), &pkt_size) ;
 	}
@@ -494,7 +517,22 @@ static int uwsgi_handler(request_rec *r) {
 						free(uwsgi_vars);
 						return HTTP_INTERNAL_SERVER_ERROR;
 					}
-					apr_brigade_write(bb, NULL, NULL, buf, cnt);
+					if (!c->cgi_mode) {
+						b = apr_bucket_transient_create(buf, cnt, r->connection->bucket_alloc);
+						APR_BRIGADE_INSERT_TAIL(bb, b);
+						b = apr_bucket_flush_create(r->connection->bucket_alloc);
+						APR_BRIGADE_INSERT_TAIL(bb, b);
+						if (ap_pass_brigade(r->output_filters, bb) != APR_SUCCESS) {
+							close(uwsgi_poll.fd);
+							apr_brigade_destroy(bb);
+							free(uwsgi_vars);
+							return HTTP_INTERNAL_SERVER_ERROR;
+						}
+						apr_brigade_cleanup(bb);
+					}
+					else {
+						apr_brigade_write(bb, NULL, NULL, buf, cnt);
+					}
 				}
 				else {
 					// EOF
@@ -621,7 +659,7 @@ static const char * cmd_uwsgi_force_cgi_mode(cmd_parms *cmd, void *cfg, const ch
                 c = ap_get_module_config(cmd->server->module_config, &uwsgi_module);
         }
 
-	if (!strcmp("yes", value) || !strcmp("on", value) || !strcmp("enable", value) || !strcmp("1", value)) {
+	if (!strcmp("yes", value) || !strcmp("on", value) || !strcmp("enable", value) || !strcmp("1", value) || !strcmp("true", value)) {
 		c->cgi_mode = 1 ;
 	}
 
@@ -722,6 +760,28 @@ static const char * cmd_uwsgi_socket(cmd_parms *cmd, void *cfg, const char *path
 	return NULL ;
 }
 
+static const char * cmd_uwsgi_empty_remote_user(cmd_parms *cmd, void *cfg, const char *value) {
+
+	uwsgi_cfg *c ;
+
+	if (cfg) {
+		c = cfg ;
+	}
+	else {
+		c = ap_get_module_config(cmd->server->module_config, &uwsgi_module);
+	}
+
+	if (!strcmp("yes", value) || !strcmp("on", value) || !strcmp("enable", value) || !strcmp("1", value) || !strcmp("true", value)) {
+		c->empty_remote_user = 1;
+	}
+	else {
+		c->empty_remote_user = 0;
+	}
+
+	return NULL ;
+
+}
+
 static const command_rec uwsgi_cmds[] = {
 	AP_INIT_TAKE12("uWSGIsocket", cmd_uwsgi_socket, NULL, RSRC_CONF|ACCESS_CONF, "Absolute path and optional timeout in seconds of uwsgi server socket"),	
 	AP_INIT_TAKE1("uWSGIsocket2", cmd_uwsgi_socket2, NULL, RSRC_CONF|ACCESS_CONF, "Absolute path of failover uwsgi server socket"),	
@@ -730,6 +790,7 @@ static const command_rec uwsgi_cmds[] = {
 	AP_INIT_TAKE1("uWSGIforceScriptName", cmd_uwsgi_force_script_name, NULL, ACCESS_CONF, "Fix for PATH_INFO/SCRIPT_NAME when the location has filesystem correspondence"),	
 	AP_INIT_TAKE1("uWSGIforceCGImode", cmd_uwsgi_force_cgi_mode, NULL, ACCESS_CONF, "Force uWSGI CGI mode for perfect integration with apache filter"),	
 	AP_INIT_TAKE1("uWSGIforceWSGIscheme", cmd_uwsgi_force_wsgi_scheme, NULL, ACCESS_CONF, "Force the WSGI scheme var (set by default to \"http\")"),	
+	AP_INIT_TAKE1("uWSGIemptyRemoteUser", cmd_uwsgi_empty_remote_user, NULL, ACCESS_CONF, "Always include REMOTE_USER in the environment, even with an empty value (default true)"),
 	AP_INIT_TAKE1("uWSGImaxVars", cmd_uwsgi_max_vars, NULL, ACCESS_CONF, "Set the maximum allowed number of uwsgi variables (default 128)"),	
 	{NULL}
 };

bin/uwsgi

@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+cmd = File.expand_path "#{File.dirname(__FILE__)}/../ext/uwsgi/uwsgi.ruby"
+
+exec(cmd, *ARGV)

build/README

@@ -1 +0,0 @@
-object file for embedded files will be put here

buildconf/base.ini

@@ -0,0 +1,34 @@
+[uwsgi]
+xml = auto
+yaml = true
+json = auto
+sqlite3 = auto
+zeromq = auto
+ssl = auto
+ldap = auto
+pcre = auto
+routing = auto
+debug = false
+unbit = false
+xml_implementation = libxml2
+yaml_implementation = auto
+malloc_implementation = libc
+extras =
+plugins =
+bin_name = uwsgi
+append_version =
+plugin_dir = .
+embedded_plugins = %(main_plugin)s, ping, cache, nagios, rrdtool, carbon, rpc, corerouter, fastrouter, http, ugreen, signal, syslog, rsyslog, logsocket, router_uwsgi, router_redirect, router_basicauth, zergpool, redislog, mongodblog, router_rewrite, router_http, logfile, router_cache, rawrouter, router_static, sslrouter
+as_shared_library = false
+
+locking = auto
+event = auto
+timer = auto
+filemonitor = auto
+
+blacklist =
+whitelist =
+
+embed_files =
+
+embed_config =

buildconf/cgi.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin = cgi
+inherit = base

buildconf/core.ini

@@ -1,3 +1,4 @@
 [uwsgi]
-inherit = default
+main_plugin =
+inherit = base
 embedded_plugins = null

buildconf/coverity.ini

@@ -0,0 +1,4 @@
+[uwsgi]
+# pypy,jvm,ring,jwsgi
+main_plugin = erlang,psgi,rack,lua,python,gevent,php,cgi,mono,pyerl,go
+inherit = base

buildconf/default.ini

@@ -1,44 +1,3 @@
 [uwsgi]
-xml = true
-ini = true
-yaml = true
-json = auto
-sqlite3 = auto
-zeromq = auto
-snmp = true
-sctp = false
-spooler = true
-embedded = true
-udp = true
-multicast = true
-threading = true
-sendfile = true
-minterpreters = true
-async = true
-evdis = false
-ldap = auto
-pcre = auto
-debug = false
-unbit = false
-xml_implementation = libxml2
-yaml_implementation = auto
-malloc_implementation = libc
-plugins =
-bin_name = uwsgi
-append_version =
-plugin_dir = .
-embedded_plugins = python, ping, cache, nagios, rpc, fastrouter, http, ugreen
-as_shared_library = false
-
-locking = auto
-event = auto
-timer = auto
-filemonitor = auto
-
-embed_files =
-
-embed_config =
-
-[python]
-paste = true
-web3 = true
+main_plugin = python,gevent
+inherit = base

buildconf/django.ini

@@ -1,3 +1,4 @@
 [uwsgi]
-inherit = default
+main_plugin = python
+inherit = base
 embed_files = bootstrap3.py,django.zip,djapp.zip

buildconf/embedded.ini

@@ -1,4 +1,5 @@
 [uwsgi]
-inherit = default
+main_plugin = python
+inherit = base
 
 embed_files = embedme.py,uwsgidecorators.py

buildconf/erlang.ini

@@ -1,3 +1,3 @@
 [uwsgi]
-inherit = default
-embedded_plugins = +,erlang
+main_plugin = erlang
+inherit = base

buildconf/gevent.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin = python,gevent
+inherit = base

buildconf/go.ini

@@ -0,0 +1,5 @@
+[uwsgi]
+main_plugin = go
+inherit = base
+bin_name = libuwsgi.so
+as_shared_library = true

buildconf/gridfs.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin = gridfs
+inherit = base

buildconf/jwsgi.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin = jvm,jwsgi
+inherit = base

buildconf/lib.ini

@@ -1,5 +1,5 @@
 [uwsgi]
-inherit = default
+inherit = base
 bin_name = libuwsgi.so
-embedded_plugins = symcall
+embedded_plugins = null
 as_shared_library = true

buildconf/lua.ini

@@ -1,3 +1,3 @@
 [uwsgi]
-inherit = default
-embedded_plugins = lua
+main_plugin = lua
+inherit = base

buildconf/luap.ini

@@ -1,3 +1,4 @@
 [uwsgi]
-inherit = default
+main_plugin = 
+inherit = base
 plugins = lua

buildconf/modular.ini

@@ -1,5 +1,5 @@
 [uwsgi]
-inherit = default
+inherit = base
 plugins = python, ping, rack, psgi, cache, http, fastrouter
 plugin_dir = plugins
 embedded_plugins = null

buildconf/mono.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin = mono
+inherit = base

buildconf/package.ini

@@ -1,4 +1,4 @@
 [uwsgi]
-inherit = default
+inherit = base
 plugin_dir = /usr/lib/uwsgi
-embedded_plugins = null
+embedded_plugins =

buildconf/php.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin = php
+inherit = base

buildconf/ppa.ini

@@ -0,0 +1,34 @@
+[uwsgi]
+xml = true
+yaml = true
+json = true
+sqlite3 = true
+zeromq = true
+ssl = true
+ldap = true
+pcre = true
+routing = true
+debug = false
+unbit = false
+xml_implementation = libxml2
+yaml_implementation = libyaml
+malloc_implementation = libc
+extras =
+plugins =
+bin_name = /usr/lib/libuwsgi.so
+append_version = ubuntu
+plugin_dir = /usr/lib/uwsgi
+embedded_plugins =
+as_shared_library = true
+
+locking = auto
+event = auto
+timer = auto
+filemonitor = auto
+
+blacklist =
+whitelist =
+
+embed_files =
+
+embed_config =

buildconf/psgi.ini

@@ -1,3 +1,3 @@
 [uwsgi]
-inherit = default
-embedded_plugins = psgi
+main_plugin = psgi
+inherit = base

buildconf/pyerl.ini

@@ -1,3 +1,3 @@
 [uwsgi]
-inherit = default
-embedded_plugins = +,erlang,pyerl
+main_plugin = python,erlang,pyerl
+inherit = base 

buildconf/pylua.ini

@@ -1,3 +1,3 @@
 [uwsgi]
-inherit = default
-embedded_plugins = +,lua
+main_plugin = python,lua
+inherit = base

buildconf/pypy.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin = pypy
+inherit = base

buildconf/pyrb.ini

@@ -1,31 +0,0 @@
-[uwsgi]
-xml = true
-ini = true
-snmp = true
-sctp = false
-erlang = false
-spooler = true
-embedded = true
-udp = true
-multicast = true
-threading = true
-sendfile = true
-proxy = true
-minterpreters = true
-async = true
-http = true
-evdis = false
-ldap = false
-routing = false
-stackless = false
-debug = false
-unbit = false
-xml_implementation = libxml2
-plugins =
-bin_name = uwsgi
-plugin_dir = .
-embedded_plugins = python, ping, nagios, rack
-
-[python]
-paste = true
-web3 = true

buildconf/pyring.ini

@@ -0,0 +1,6 @@
+[uwsgi]
+main_plugin = python,gevent
+inherit = base
+plugins = jvm,ring
+plugin_dir = .
+

buildconf/pyuwsgi.ini

@@ -0,0 +1,5 @@
+[uwsgi]
+main_plugin = pyuwsgi
+inherit = base
+bin_name = pyuwsgi.so
+as_shared_library = true

buildconf/rack.ini

@@ -1,3 +1,3 @@
 [uwsgi]
-inherit = default
-embedded_plugins = rack, ping, cache, nagios, rpc, fastrouter, http, ugreen
+main_plugin = rack
+inherit = base

buildconf/rackp.ini

@@ -1,30 +0,0 @@
-[uwsgi]
-xml = true
-ini = true
-yaml = true
-snmp = true
-sctp = false
-erlang = false
-spooler = false
-embedded = false
-udp = true
-multicast = false
-threading = true
-sendfile = true
-nagios = true
-proxy = true
-minterpreters = true
-async = true
-ugreen = false
-http = true
-evdis = false
-ldap = false
-routing = false
-stackless = false
-debug = false
-unbit = false
-xml_implementation = libxml2
-plugins = rack
-bin_name = uwsgi
-plugin_dir = .
-embedded_plugins =

buildconf/ring.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin = jvm,ring
+inherit = base

buildconf/travis.ini

@@ -0,0 +1,3 @@
+[uwsgi]
+main_plugin =
+inherit = base

buildconf/unbit.ini

@@ -1,35 +1,34 @@
 [uwsgi]
 xml = true
-ini = true
 yaml = true
-json = true
-sqlite3 = true
+json = false
+sqlite3 = false
 zeromq = false
-snmp = false
-sctp = false
-spooler = true
-embedded = true
-udp = true
-multicast = false
-threading = true
-sendfile = true
-minterpreters = true
-async = true
-evdis = false
-ldap = true
-pcre = false
+ssl = true
+ldap = false
+pcre = true
+routing = true
 debug = false
 unbit = true
-xml_implementation = libxml2
+xml_implementation = expat
 yaml_implementation = auto
 malloc_implementation = libc
+extras =
 plugins =
-bin_name = /opt/unbit/bin/uwsgi
+bin_name = /opt/unbit/uwsgi19/lib/libuwsgi.so
 append_version = unbit
-plugin_dir = /opt/unbit/uwsgi_plugins
+plugin_dir = /opt/unbit/uwsgi19/plugins
 embedded_plugins =
+as_shared_library = true
 
 locking = auto
 event = auto
 timer = auto
 filemonitor = auto
+
+blacklist =
+whitelist =
+
+embed_files =
+
+embed_config =

buildconf/unbitstaff.ini

@@ -1,6 +1,5 @@
 [uwsgi]
 inherit = unbit
-json = false
 embedded_plugins = python
 bin_name = ../bin/uwsgi
 plugin_dir = ../bin/uwsgi_plugins

cache.c

@@ -1,716 +0,0 @@
-#include "uwsgi.h"
-
-extern struct uwsgi_server uwsgi;
-
-void uwsgi_init_cache() {
-	int i;
-
-	if (!uwsgi.cache_blocksize)
-                        uwsgi.cache_blocksize = UMAX16;
-
-                if ((uwsgi.cache_blocksize * uwsgi.cache_max_items) % uwsgi.page_size != 0) {
-                        uwsgi_log("invalid cache blocksize %llu: must be a multiple of memory page size (%d bytes)\n", (unsigned long long) uwsgi.cache_blocksize, uwsgi.page_size);
-                        exit(1);
-                }
-
-                uwsgi.cache_hashtable = (uint64_t *) mmap(NULL, sizeof(uint64_t) * UMAX16, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-                if (!uwsgi.cache_hashtable) {
-                        uwsgi_error("mmap()");
-                        exit(1);
-                }
-
-                memset(uwsgi.cache_hashtable, 0, sizeof(uint64_t) * UMAX16);
-
-                uwsgi.cache_unused_stack = (uint64_t *) mmap(NULL, sizeof(uint64_t) * uwsgi.cache_max_items, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-                if (!uwsgi.cache_unused_stack) {
-                        uwsgi_error("mmap()");
-                        exit(1);
-                }
-
-                memset(uwsgi.cache_unused_stack, 0, sizeof(uint64_t) * uwsgi.cache_max_items);
-
-                // the first cache item is always zero
-                uwsgi.shared->cache_first_available_item = 1;
-                uwsgi.shared->cache_unused_stack_ptr = 0;
-
-                //uwsgi.cache_items = (struct uwsgi_cache_item *) mmap(NULL, sizeof(struct uwsgi_cache_item) * uwsgi.cache_max_items, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-                if (uwsgi.cache_store) {
-                        uwsgi.cache_filesize = (sizeof(struct uwsgi_cache_item) * uwsgi.cache_max_items) + (uwsgi.cache_blocksize * uwsgi.cache_max_items);
-                        int cache_fd;
-                        struct stat cst;
-
-                        if (stat(uwsgi.cache_store, &cst)) {
-                                uwsgi_log("creating a new cache store file: %s\n", uwsgi.cache_store);
-                                cache_fd = open(uwsgi.cache_store, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
-                                if (cache_fd >= 0) {
-                                        // fill the caching store
-                                        if (ftruncate(cache_fd, uwsgi.cache_filesize)) {
-                                                uwsgi_log("ftruncate()");
-                                                exit(1);
-                                        }
-                                }
-                        }
-                        else {
-                                if ((size_t) cst.st_size != uwsgi.cache_filesize || !S_ISREG(cst.st_mode)) {
-                                        uwsgi_log("invalid cache store file. Please remove it or fix cache blocksize/items to match its size\n");
-                                        exit(1);
-                                }
-                                cache_fd = open(uwsgi.cache_store, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
-                                uwsgi_log("recovered cache from backing store file: %s\n", uwsgi.cache_store);
-                        }
-
-                        if (cache_fd < 0) {
-                                uwsgi_error_open(uwsgi.cache_store);
-                                exit(1);
-                        }
-                        uwsgi.cache_items = (struct uwsgi_cache_item *) mmap(NULL, uwsgi.cache_filesize, PROT_READ | PROT_WRITE, MAP_SHARED, cache_fd, 0);
-                        uwsgi_cache_fix();
-
-                }
-                else {
-                        uwsgi.cache_items = (struct uwsgi_cache_item *) mmap(NULL, (sizeof(struct uwsgi_cache_item) * uwsgi.cache_max_items) + (uwsgi.cache_blocksize * uwsgi.cache_max_items), PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-                        for (i = 0; i < (int) uwsgi.cache_max_items; i++) {
-                                memset(&uwsgi.cache_items[i], 0, sizeof(struct uwsgi_cache_item));
-                        }
-                }
-                if (!uwsgi.cache_items) {
-                        uwsgi_error("mmap()");
-                        exit(1);
-                }
-
-                /*
-                   uwsgi.cache = mmap(NULL, uwsgi.cache_blocksize * uwsgi.cache_max_items, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-                   if (!uwsgi.cache) {
-                   uwsgi_error("mmap()");
-                   exit(1);
-                   }
-                 */
-
-                uwsgi.cache = ((void *) uwsgi.cache_items) + (sizeof(struct uwsgi_cache_item) * uwsgi.cache_max_items);
-
-                uwsgi.cache_lock = uwsgi_mmap_shared_rwlock();
-                uwsgi_rwlock_init(uwsgi.cache_lock);
-
-                uwsgi_log("*** Cache subsystem initialized: %dMB preallocated ***\n", ((sizeof(uint64_t) * UMAX16) + (sizeof(uint64_t) * uwsgi.cache_max_items) + (uwsgi.cache_blocksize * uwsgi.cache_max_items) + (sizeof(struct uwsgi_cache_item) * uwsgi.cache_max_items)) / (1024 * 1024));
-}
-
-struct uwsgi_subscriber_name *uwsgi_get_subscriber(struct uwsgi_dict *udict, char *key, uint16_t keylen) {
-
-	uint64_t ovl;
-	struct uwsgi_subscriber *usub;
-	struct uwsgi_subscriber_name *ret = NULL;
-	
-	usub = (struct uwsgi_subscriber *) uwsgi_dict_get(udict, key, keylen, &ovl);
-
-	if (usub == NULL || !ovl) return NULL;
-
-	if (!usub->nodes) return NULL;
-
-	if (usub && ovl) {
-		ret = &usub->names[usub->current];
-		// dead node
-		if (ret->len == 0) {
-			if (usub->current == usub->nodes-1) {
-				usub->nodes--;
-			}
-			// retry with another node (if available)
-			if (usub->nodes > 0) {
-				usub->current++;
-				if (usub->current >= usub->nodes) usub->current = 0;
-				return uwsgi_get_subscriber(udict, key, keylen);
-			}
-		}
-
-		if (usub->nodes > 1) {
-			usub->current++;
-			if (usub->current >= usub->nodes) usub->current = 0;
-		}
-
-	}
-
-	return ret;
-}
-
-void uwsgi_add_subscriber(struct uwsgi_dict *udict, struct uwsgi_subscribe_req *usr) {
-
-	char *ptr;
-	uint64_t vallen = 0;
-	struct uwsgi_subscriber *usub, nusub;
-	int found = 0;
-	int i;
-	
-	ptr = uwsgi_dict_get(udict, usr->key, usr->keylen, &vallen);
-	if (ptr && vallen) {
-		usub = (struct uwsgi_subscriber *) ptr;
-		for(i=0;i<(int)usub->nodes;i++) {
-			if (!uwsgi_strncmp(usub->names[i].name, usub->names[i].len, usr->address, usr->address_len)) {
-				found = 1;
-				break;
-			}
-		}
-		if (!found) {
-			found = usub->nodes;
-			// check for unallocated slot
-			for(i=0;i<(int)usub->nodes;i++) {
-				if (usub->names[i].len == 0) {
-					found = i;
-					break;
-				}
-			}
-			usub->names[found].len = usr->address_len;
-			usub->names[found].modifier1 = usr->modifier1;
-			usub->names[found].modifier2 = usr->modifier2;
-			memcpy(usub->names[found].name, usr->address, usr->address_len);
-			if (found == (int) usub->nodes) {
-				usub->nodes++;
-			}
-		}
-		return;
-	}
-	else {
-		nusub.nodes = 1;
-		nusub.current = 0;
-		memcpy(nusub.names[0].name, usr->address, usr->address_len);
-		nusub.names[0].modifier1 = usr->modifier1;
-		nusub.names[0].modifier2 = usr->modifier2;
-		uwsgi_dict_set(udict, usr->key, usr->keylen, (char *) &nusub, sizeof(struct uwsgi_subscriber));
-	}
-
-}
-
-struct uwsgi_dict *uwsgi_dict_create(uint64_t items, uint64_t blocksize) {
-
-	int i;
-
-	struct uwsgi_dict *udict = (struct uwsgi_dict *) mmap(NULL, sizeof(uint64_t) * UMAX16, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-	if (!udict) {
-        	uwsgi_error("mmap()");
-                exit(1);
-	}
-
-	if (!blocksize) blocksize = 4096;
-
-        if (blocksize % uwsgi.page_size != 0) {
-        	uwsgi_log("invalid shared dictionary blocksize %llu: must be a multiple of memory page size (%d bytes)\n", (unsigned long long) udict->blocksize, uwsgi.page_size);
-        	exit(1);
-	}
-
-	udict->blocksize = blocksize;
-	udict->max_items = items;
-
-        udict->hashtable = (uint64_t *) mmap(NULL, sizeof(uint64_t) * UMAX16, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-        if (!udict->hashtable) {
-        	uwsgi_error("mmap()");
-                exit(1);
-	}
-
-        memset(udict->hashtable, 0, sizeof(uint64_t) * UMAX16);
-
-        udict->unused_stack = (uint64_t *) mmap(NULL, sizeof(uint64_t) * udict->max_items, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-        if (!udict->unused_stack) {
-        	uwsgi_error("mmap()");
-                exit(1);
-	}
-
-        memset(udict->unused_stack, 0, sizeof(uint64_t) * udict->max_items);
-
-        udict->items = (struct uwsgi_dict_item *) mmap(NULL, sizeof(struct uwsgi_dict_item) * udict->max_items, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-        if (!udict->items) {
-        	uwsgi_error("mmap()");
-                exit(1);
-        }
-
-        udict->data = mmap(NULL, udict->blocksize * udict->max_items, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
-        if (!udict->data) {
-        	uwsgi_error("mmap()");
-                exit(1);
-        }
-
-        for(i=0;i< (int) udict->max_items;i++) {
-        	memset(&udict->items[i], 0, sizeof(struct uwsgi_dict_item));
-        }
-
-        udict->first_available_item = 1;
-        udict->unused_stack_ptr = 0;
-
-        udict->lock = uwsgi_mmap_shared_lock();
-        uwsgi_lock_init(udict->lock);
-
-	return udict;
-}
-
-uint32_t djb33x_hash(char *key, int keylen) {
-
-	register uint32_t hash = 5381;
-	int i;
-
-	for(i=0;i<keylen;i++) {
-		hash = ((hash << 5) + hash) ^ key[i];
-	}
-
-	return hash;
-}
-
-
-inline uint64_t uwsgi_dict_get_index(struct uwsgi_dict *udict, char *key, uint16_t keylen) {
-
-        uint32_t hash = djb33x_hash(key, keylen);
-
-        int hash_key = hash % 0xffff;
-
-        uint64_t slot = udict->hashtable[hash_key];
-
-        struct uwsgi_dict_item *udi;
-
-        udi = &udict->items[slot];
-
-        // first round
-        if (udi->djbhash != hash) goto cycle;
-        if (udi->keysize != keylen) goto cycle;
-        if (memcmp(udi->key, key, keylen)) goto cycle;
-
-        return slot;
-
-cycle:
-        while(udi->next) {
-                slot = udi->next;
-                udi = &udict->items[slot];
-                if (udi->djbhash != hash) continue;
-                if (udi->keysize != keylen) continue;
-                if (!memcmp(udi->key, key, keylen)) return slot;
-        }
-
-        return 0;
-}
-
-char *uwsgi_dict_get(struct uwsgi_dict *udict, char *key, uint16_t keylen, uint64_t *valsize) {
-
-        uint64_t index = uwsgi_dict_get_index(udict, key, keylen);
-
-        if (index) {
-                *valsize = udict->items[index].valsize;
-                udict->items[index].hits++;
-                return udict->data+(index*udict->blocksize);
-        }
-
-        return NULL;
-}
-
-int uwsgi_dict_del(struct uwsgi_dict *udict, char *key, uint16_t keylen) {
-
-        uint64_t index = 0;
-        struct uwsgi_dict_item *udi;
-        int ret = -1;
-
-        index = uwsgi_dict_get_index(udict, key, keylen);
-        if (index) {
-                udi = &udict->items[index] ;
-                udi->keysize = 0;
-                udi->valsize = 0;
-                udict->unused_stack_ptr++;
-                udict->unused_stack[udict->unused_stack_ptr] = index;
-                // try to return to initial condition...
-                if (index == udict->first_available_item-1) {
-                        udict->first_available_item--;
-                }
-                ret = 0;
-                // relink collisioned entry
-                if (udi->prev) {
-                        udict->items[udi->prev].next = udi->next;
-                }
-                if (udi->next) {
-                        udict->items[udi->next].prev = udi->prev;
-                }
-                if (!udi->prev && !udi->next) {
-                        // reset hashtable entry
-                        udict->hashtable[udi->djbhash % 0xffff] = 0;
-                }
-                udi->djbhash = 0;
-                udi->prev = 0;
-                udi->next = 0;
-        }
-
-        return ret;
-}
-
-
-
-inline uint64_t uwsgi_cache_get_index(char *key, uint16_t keylen) {
-
-	uint32_t hash = djb33x_hash(key, keylen);
-	
-	int hash_key = hash % 0xffff;
-
-	uint64_t slot = uwsgi.cache_hashtable[hash_key];
-
-	struct uwsgi_cache_item *uci;
-
-	//uwsgi_log("found slot %d for key %d\n", slot, hash_key);
-
-	uci = &uwsgi.cache_items[slot];
-
-	// first round
-	if (uci->djbhash != hash) goto cycle;
-	if (uci->keysize != keylen) goto cycle;
-	if (memcmp(uci->key, key, keylen)) goto cycle;
-
-	return slot;
-
-cycle:
-	while(uci->next) {
-		slot = uci->next;
-		uci = &uwsgi.cache_items[slot];
-		if (uci->djbhash != hash) continue;
-		if (uci->keysize != keylen) continue;
-		if (!memcmp(uci->key, key, keylen)) return slot;
-	}
-
-	return 0;
-}
-
-uint32_t uwsgi_cache_exists(char *key, uint16_t keylen) {
-
-	return uwsgi_cache_get_index(key, keylen);
-}
-
-char *uwsgi_cache_get(char *key, uint16_t keylen, uint64_t *valsize) {
-
-	uint64_t index = uwsgi_cache_get_index(key, keylen);
-
-	if (index) {
-		if (uwsgi.cache_items[index].flags & UWSGI_CACHE_FLAG_UNGETTABLE) return NULL;
-		*valsize = uwsgi.cache_items[index].valsize;
-		uwsgi.cache_items[index].hits++;
-		return uwsgi.cache+(index*uwsgi.cache_blocksize);
-	}
-
-	return NULL;
-}
-
-int uwsgi_cache_del(char *key, uint16_t keylen) {
-
-	uint64_t index = 0;
-	struct uwsgi_cache_item *uci;
-	int ret = -1;
-
-	index = uwsgi_cache_get_index(key, keylen);
-	if (index) {
-		uci = &uwsgi.cache_items[index] ;
-		uci->keysize = 0;
-		uci->valsize = 0;
-		uwsgi.shared->cache_unused_stack_ptr++;
-		uwsgi.cache_unused_stack[uwsgi.shared->cache_unused_stack_ptr] = index;
-		// try to return to initial condition...
-		if (index == uwsgi.shared->cache_first_available_item-1) {
-			uwsgi.shared->cache_first_available_item--;
-			//uwsgi_log("FACI: %llu STACK PTR: %llu\n", (unsigned long long) uwsgi.shared->cache_first_available_item, (unsigned long long) uwsgi.shared->cache_unused_stack_ptr);
-		}
-		ret = 0;
-		// relink collisioned entry
-		if (uci->prev) {
-			uwsgi.cache_items[uci->prev].next = uci->next;	
-		}
-		if (uci->next) {
-			uwsgi.cache_items[uci->next].prev = uci->prev;	
-		}
-		if (!uci->prev && !uci->next) {
-			// reset hashtable entry
-			//uwsgi_log("!!! resetted hashtable entry !!!\n");
-			uwsgi.cache_hashtable[uci->djbhash % 0xffff] = 0;
-		}
-		uci->djbhash = 0;
-		uci->prev = 0;
-		uci->next = 0;
-	}
-
-	return ret;
-}
-
-void uwsgi_cache_fix() {
-
-	uint64_t i;
-
-	for(i=0;i< uwsgi.cache_max_items;i++) {
-		// valid record ?
-		if (uwsgi.cache_items[i].keysize) {
-			if (!uwsgi.cache_items[i].prev) {
-				// put value in hash_table
-				uwsgi.cache_hashtable[ uwsgi.cache_items[i].djbhash % 0xffff] = i;
-			}
-		}
-		else {
-			// put this record in unused stack
-			uwsgi.shared->cache_first_available_item = i;
-			uwsgi.shared->cache_unused_stack_ptr++;
-			uwsgi.cache_unused_stack[uwsgi.shared->cache_unused_stack_ptr] = i;
-		}
-	}
-}
-
-int uwsgi_cache_set(char *key, uint16_t keylen, char *val, uint64_t vallen, uint64_t expires, uint16_t flags) {
-
-	uint64_t index = 0, last_index = 0 ;
-
-	struct uwsgi_cache_item *uci, *ucii;
-
-	int ret = -1;
-	int slot;
-
-	if (!keylen || !vallen) return -1;
-
-	if (keylen > UWSGI_CACHE_MAX_KEY_SIZE) return -1;	
-
-	if (uwsgi.shared->cache_first_available_item >= uwsgi.cache_max_items && !uwsgi.shared->cache_unused_stack_ptr) {
-		uwsgi_log("*** DANGER cache is FULL !!! ***\n");
-		goto end;
-	}
-
-	//uwsgi_log("putting cache data in key %.*s %d\n", keylen, key, vallen);
-	index = uwsgi_cache_get_index(key, keylen);
-	if (!index) {
-		if (uwsgi.shared->cache_unused_stack_ptr) {
-			//uwsgi_log("!!! REUSING CACHE SLOT !!! (faci: %llu)\n", (unsigned long long) uwsgi.shared->cache_first_available_item);
-			index = uwsgi.cache_unused_stack[uwsgi.shared->cache_unused_stack_ptr];
-			uwsgi.shared->cache_unused_stack_ptr--;
-		}
-		else {
-			index = uwsgi.shared->cache_first_available_item;	
-			if (uwsgi.shared->cache_first_available_item < uwsgi.cache_max_items) {
-				uwsgi.shared->cache_first_available_item++;
-			}
-		}
-		uci = &uwsgi.cache_items[index] ;
-		if (expires) expires += time(NULL);
-		uci->expires = expires;
-		uci->djbhash = djb33x_hash(key, keylen);
-		uci->hits = 0;
-		uci->flags = flags;
-		memcpy(uci->key, key, keylen);
-		memcpy(uwsgi.cache+(index*uwsgi.cache_blocksize), val, vallen);
-
-		// set this as late as possibile (to reduce races risk)
-
-		uci->valsize = vallen;
-		uci->keysize = keylen;	
-		ret = 0;
-		// now put the value in the 16bit hashtable
-		slot = uci->djbhash % 0xffff;
-
-		if (uwsgi.cache_hashtable[slot] == 0) {
-			uwsgi.cache_hashtable[slot] = index;
-		}
-		else {
-			//uwsgi_log("HASH COLLISION !!!!\n");
-			// append to first available next
-			last_index = uwsgi.cache_hashtable[slot];
-			ucii = &uwsgi.cache_items[ last_index ];
-			while(ucii->next) {
-				last_index = ucii->next;
-				ucii = &uwsgi.cache_items[ last_index ];
-			}
-			ucii->next = index;
-			uci->prev = last_index;
-		}
-	}
-	else if (flags && UWSGI_CACHE_FLAG_UPDATE) {
-		uci = &uwsgi.cache_items[index] ;
-		if (expires) {
-			expires += time(NULL);
-			uci->expires = expires;
-		}
-		memcpy(uwsgi.cache+(index*uwsgi.cache_blocksize), val, vallen);
-		uci->valsize = vallen;
-		ret = 0;
-	}
-
-end:
-	return ret;
-	
-}
-
-int uwsgi_dict_set(struct uwsgi_dict *udict, char *key, uint16_t keylen, char *val, uint64_t vallen) {
-
-        uint64_t index = 0, last_index = 0 ;
-
-        struct uwsgi_dict_item *udi, *udii;
-
-        int ret = -1;
-        int slot;
-
-        if (!keylen || !vallen) return -1;
-
-        if (keylen > UWSGI_CACHE_MAX_KEY_SIZE) return -1;
-
-        if (udict->first_available_item >= udict->max_items && !udict->unused_stack_ptr) {
-                uwsgi_log("*** DANGER dictionary %p is FULL !!! ***\n", udict);
-                goto end;
-        }
-
-        index = uwsgi_dict_get_index(udict, key, keylen);
-        if (!index) {
-                if (udict->unused_stack_ptr) {
-                        index = udict->unused_stack[udict->unused_stack_ptr];
-                        udict->unused_stack_ptr--;
-                }
-                else {
-                        index = udict->first_available_item;
-                        if (udict->first_available_item < udict->max_items) {
-                                udict->first_available_item++;
-                        }
-                }
-                udi = &udict->items[index] ;
-                udi->djbhash = djb33x_hash(key, keylen);
-                udi->hits = 0;
-                memcpy(udi->key, key, keylen);
-                memcpy(udict->data+(index*udict->blocksize), val, vallen);
-
-                // set this as late as possibile (to reduce races risk)
-
-                udi->valsize = vallen;
-                udi->keysize = keylen;
-                ret = 0;
-                // now put the value in the 16bit hashtable
-                slot = udi->djbhash % 0xffff;
-
-                if (udict->hashtable[slot] == 0) {
-                        udict->hashtable[slot] = index;
-                }
-                else {
-                        // append to first available next
-                        last_index = udict->hashtable[slot];
-                        udii = &udict->items[ last_index ];
-                        while(udii->next) {
-                                last_index = udii->next;
-                                udii = &udict->items[ last_index ];
-                        }
-                        udii->next = index;
-                        udi->prev = last_index;
-                }
-        }
-
-end:
-        return ret;
-
-}
-
-/* THIS PART IS HEAVILY OPTIMIZED: PERFORMANCE NOT ELEGANCE !!! */
-
-void *cache_thread_loop(void *fd_ptr) {
-
-	int *fd_tmp = (int *) fd_ptr;
-	int fd = *fd_tmp;
-	int i;
-	ssize_t len;
-	char uwsgi_packet[UMAX16+4];
-	struct uwsgi_header *uh = (struct uwsgi_header *) uwsgi_packet;
-	char *val;
-	uint64_t vallen;
-	char *key;
-	uint16_t keylen;
-	struct pollfd ctl_poll;
-	char *watermark;
-	struct sockaddr_un ctl_sun;
-	socklen_t ctl_sun_len;
-
-	ctl_poll.events = POLLIN;
-
-	for(;;) {
-		ctl_sun_len = sizeof(struct sockaddr_un);
-		pthread_mutex_lock(&uwsgi.cache_server_lock);
-
-		ctl_poll.fd = accept(fd, (struct sockaddr *) &ctl_sun, &ctl_sun_len);
-
-		pthread_mutex_unlock(&uwsgi.cache_server_lock);
-
-		if (ctl_poll.fd < 0) {
-			uwsgi_error("cache accept()");
-			continue;
-		}
-		i = 0;
-		while(i < 4) {
-			len = poll(&ctl_poll, 1, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
-			if (len <= 0) {
-				uwsgi_error("cache poll()");
-				goto clear;
-			}
-			len = read(ctl_poll.fd, uwsgi_packet+i, 4-i);
-			if (len < 0) {
-				uwsgi_error("cache read()");
-				goto clear;
-			}
-			i+=len;
-		}
-
-		if (uh->pktsize == 0) goto clear;
-
-		while(i < 4+uh->pktsize) {
-			len = poll(&ctl_poll, 1, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
-			if (len <= 0) {
-				uwsgi_error("cache poll()");
-				goto clear;
-			}
-			len = read(ctl_poll.fd, uwsgi_packet+i, (4+uh->pktsize)-i);
-			if (len < 0) {
-				uwsgi_error("cache read()");
-				goto clear;
-			}
-			i+=len;
-		}
-
-		watermark = uwsgi_packet+4+uh->pktsize;
-
-		// get first parameter
-		memcpy(&keylen, uwsgi_packet+4, 2);
-#ifdef __BIG_ENDIAN__
-        	keylen = uwsgi_swap16(keylen);
-#endif
-		if (uwsgi_packet+6+keylen > watermark) goto clear;
-		key = uwsgi_packet+6+keylen+2;
-		memcpy(&keylen, key-2, 2);
-#ifdef __BIG_ENDIAN__
-        	keylen = uwsgi_swap16(keylen);
-#endif
-
-		if (key+keylen > watermark) goto clear;
-
-		val = uwsgi_cache_get(key, keylen, &vallen);
-                if (val && vallen > 0) {
-                	if (write(ctl_poll.fd, val, vallen) < 0) {
-				uwsgi_error("cache write()");
-			}
-		}
-
-clear:
-		close(ctl_poll.fd);
-	}
-
-	return NULL;
-}
-
-int uwsgi_cache_server(char *socket, int threads) {
-
-	int *fd = uwsgi_malloc(sizeof(int));
-	
-	int i;
-	pthread_t thread_id;
-        char *tcp_port = strchr(socket, ':');
-        if (tcp_port) {
-                *fd = bind_to_tcp(socket, uwsgi.listen_queue, tcp_port);
-        }
-        else {
-                *fd = bind_to_unix(socket, uwsgi.listen_queue, uwsgi.chmod_socket, uwsgi.abstract_socket);
-        }
-
-        pthread_mutex_init(&uwsgi.cache_server_lock, NULL);
-
-	if (threads < 1) threads = 1;
-
-	uwsgi_log("*** cache-optimized server enabled on fd %d (%d threads) ***\n", *fd, threads);
-
-	for(i=0;i<threads;i++) {
-		pthread_create(&thread_id, NULL, cache_thread_loop, (void *) fd);
-	}
-
-        return *fd;
-}
-

contrib/binder.pl

@@ -0,0 +1,15 @@
+use POSIX;
+use IO::Socket::INET;
+use IO::Socket::INET6;
+use IO::Socket::UNIX;
+
+my $s = IO::Socket::INET->new(LocalAddr => '127.0.0.1', LocalPort => 1717, Proto => 'tcp', Reuse => 1);
+my $s2 = IO::Socket::INET->new(LocalAddr => '127.0.0.1', LocalPort => 3022, Proto => 'tcp', Reuse => 1);
+my $s3 = IO::Socket::INET6->new(LocalAddr => '::', LocalPort => 3017, Proto => 'tcp', Reuse => 1);
+my $s4 = IO::Socket::UNIX->new(Local => '/tmp/u.sock', Listen => 1);
+
+dup2($s->fileno, 17);
+dup2($s2->fileno, 22);
+dup2($s3->fileno, 30);
+dup2($s4->fileno, 0);
+exec './uwsgi','-M', '--socket','fd://17', '--http-socket','fd://22', '--socket','fd://30','--stats',':5001';

contrib/centos_init_script

@@ -0,0 +1,99 @@
+#!/bin/bash
+
+# uwsgi - Use uwsgi to run python and wsgi web apps.
+#
+# chkconfig: - 85 15
+# description: Use uwsgi to run python and wsgi web apps.
+# processname: uwsgi
+
+# author: Roman Vasilyev
+
+# Source function library.
+. /etc/rc.d/init.d/functions
+
+PATH=/opt/uwsgi:/sbin:/bin:/usr/sbin:/usr/bin
+prog=/usr/sbin/uwsgi
+
+OWNER=nginx
+
+NAME=uwsgi
+DESC=uwsgi
+
+#DAEMON_OPTS="-s 127.0.0.1:9001 -M 4 -t 30 -A 4 -p 4 -d /var/log/uwsgi.log --pidfile /var/run/$NAME.pid --pythonpath $PYTHONPATH --module $MODULE"
+DAEMON_OPTS="-s 127.0.0.1:9001 -M 4 -t 30 -A 4 -p 16 -b 32768 -d /var/log/$NAME.log --pidfile /var/run/$NAME.pid --uid $OWNER"
+
+[ -f /etc/sysconfig/uwsgi ] && . /etc/sysconfig/uwsgi
+
+lockfile=/var/lock/subsys/uwsgi
+
+start () {
+  echo -n "Starting $DESC: "
+  daemon $prog $DAEMON_OPTS
+  retval=$?
+  echo
+  [ $retval -eq 0 ] && touch $lockfile
+  return $retval
+}
+
+stop () {
+  echo -n "Stopping $DESC: "
+  killproc $prog
+  retval=$?
+  echo
+  [ $retval -eq 0 ] && rm -f $lockfile
+  return $retval
+}
+
+reload () {
+  echo "Reloading $NAME" 
+  killproc $prog -HUP
+  RETVAL=$?
+  echo
+}
+
+force-reload () {
+  echo "Reloading $NAME" 
+  killproc $prog -TERM
+  RETVAL=$?
+  echo
+}
+
+restart () {
+    stop
+    start
+}
+
+rh_status () {
+  status $prog
+}
+
+rh_status_q() {
+  rh_status >/dev/null 2>&1
+}
+
+case "$1" in
+  start)
+    rh_status_q && exit 0
+    $1
+    ;;
+  stop)
+    rh_status_q || exit 0
+    $1
+    ;;
+  restart|force-reload)
+    $1
+    ;;
+  reload)
+    rh_status_q || exit 7
+    $1
+    ;;
+  status)
+    rh_status
+    ;;
+  *)  
+    echo "Usage: $0 {start|stop|restart|reload|force-reload|status}" >&2
+    exit 2
+    ;;
+  esac
+  exit 0
+

contrib/cgi_python.c

@@ -0,0 +1,53 @@
+#include <Python.h>
+
+void uwsgi_cgi_load_python() {
+
+	Py_Initialize();
+}
+
+void uwsgi_cgi_run_python(char *filename) {
+
+	char **e, *p;
+        PyObject *k, *env_value;
+
+	FILE *fp = fopen(filename, "r");
+
+	PySys_SetArgv(1, &filename);
+
+	PyObject *os_module = PyImport_ImportModule("os");
+        if (os_module) {
+       		PyObject *os_module_dict = PyModule_GetDict(os_module);
+        	PyObject *py_environ = PyDict_GetItemString(os_module_dict, "environ");
+                if (py_environ) {
+                	for (e = environ; *e != NULL; e++) {
+                        	p = strchr(*e, '=');
+                                if (p == NULL) continue;
+
+                                k = PyString_FromStringAndSize(*e, (int)(p-*e));
+                                if (k == NULL) {
+                                	PyErr_Print();
+                                        continue;
+                                }
+
+                                env_value = PyString_FromString(p+1);
+                                if (env_value == NULL) {
+                                	PyErr_Print();
+                                        Py_DECREF(k);
+                                        continue;
+                                }
+
+                                if (PyObject_SetItem(py_environ, k, env_value)) {
+                                	PyErr_Print();
+                                }
+
+                                Py_DECREF(k);
+                                Py_DECREF(env_value);
+
+                        }
+
+                }
+        }
+
+
+	PyRun_AnyFileEx(fp, filename, 1);
+}

contrib/cryptologger.rb

@@ -0,0 +1,24 @@
+require 'socket'
+require 'openssl'
+
+secret = 'ciaociao'
+iv = ''
+address = '127.0.0.1'
+port  = 1717
+algo = 'bf-cbc'
+
+s = UDPSocket.new
+s.bind(address, port)
+cipher = OpenSSL::Cipher.new(algo)
+cipher.decrypt
+cipher.key = secret + ("\0" * (cipher.key_len - secret.length))
+cipher.iv = iv + ("0" * (cipher.iv_len - iv.length))
+
+loop do
+  msg, sender = s.recvfrom(8192)
+  cipher.reset
+  begin
+    puts cipher.update(msg) + cipher.final
+  rescue
+  end
+end

contrib/emperormon.ru

@@ -0,0 +1,114 @@
+require 'sinatra'
+require 'socket'
+require 'json'
+
+module EmperorStats
+  def self.uwsgi_get_stats(server)
+    parts = server.split(':')
+    if parts.length > 1
+      s = TCPSocket.open(parts[0], parts[1])
+    else
+      s = UNIXSocket.open(server)
+    end
+    return JSON.parse(s.read())
+  end
+end
+
+template = <<eof
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title><%=@title%></title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="description" content="">
+    <meta name="author" content="unbit">
+    <link href="http://unbit.github.com/bootstrap/css/bootstrap.css" rel="stylesheet">
+    <style>
+      body {
+        padding-top: 60px; /* 60px to make the container go all the way to the bottom of the topbar */
+      }
+    </style>
+    <link href="http://unbit.github.com/bootstrap/css/bootstrap-responsive.css" rel="stylesheet">
+  </head>
+  <body>
+
+    <div class="navbar navbar-fixed-top">
+      <div class="navbar-inner">
+        <div class="container">
+          <a class="brand" href="#"><%=@title%></a>
+        </div>
+      </div>
+    </div>
+
+    <div class="container">
+      <hr/>
+      <h1>Emperor: <%=@stats['emperor']%></h1>
+      <hr/>
+
+      <div class="row">
+              <div class="span8">
+                  <table class="table table-striped table-bordered">
+                    <thead>
+                      <tr>
+                        <th>name</th><th>pid</th><th>first run</th>
+                        <th>last respawn</th>
+                        <th>last heartbeat</th>
+                        <th>loyal</th>
+                        <th>respawns</th>
+			<% if @stats['emperor_tyrant'] == 1 %>
+                        <th>uid</th>
+                        <th>gid</th>
+			<% end %>
+                     </tr>
+                    </thead>
+          <% for vassal in @stats['vassals'] %>
+			<tr>
+				<td><%=vassal['id']%></td>
+				<td><%=vassal['pid']%></td>
+				<td><%=Time.at(vassal['first_run']).strftime("%d %b %Y %H:%M:%S")%></td>
+				<td><%=Time.at(vassal['last_run']).strftime("%d %b %Y %H:%M:%S")%></td>
+				<td><% if vassal['last_heartbeat'] > 0 %><%=Time.at(vassal['last_heartbeat']).strftime("%d %b %Y %H:%M:%S")%><% end %></td>
+				<td><% if vassal['loyal'] > 0 %><%=Time.at(vassal['last_loyal']).strftime("%d %b %Y %H:%M:%S")%><% end %></td>
+				<td><%=vassal['respawns']%></td>
+				<% if @stats['emperor_tyrant'] == 1 %>
+					<td><%=vassal['uid']%></td>
+					<td><%=vassal['gid']%></td>
+				<% end %>
+			</tr>
+          <% end %>
+                  </table>
+              </div>
+
+
+		<div class="span4">
+			<h3>blacklist</h3>
+			<table class="table table-striped table-bordered">
+				<thead>
+					<tr><th>name</th><th>throttle</th></tr>
+					<% for bli in @stats['blacklist'] %>
+						<tr>
+							<td><%=bli['id']%></td>
+							<td><%=bli['throttle_level']%></td>
+						</tr>
+					<% end %>
+				</thead>
+			</table>
+		</div>
+      </div>
+
+
+
+    <script src="http://unbit.github.com/jquery-1.7.2.min.js" type="text/javascript"></script>
+    <script src="http://unbit.github.com/bootstrap/js/bootstrap.min.js" type="text/javascript"></script>
+  </body>
+</html>
+eof
+
+get '/' do
+  @stats = EmperorStats::uwsgi_get_stats(ENV['EMPEROR']) 
+  @title = 'uWSGI Emperor monitor'
+  erb template
+end
+
+run Sinatra::Application

contrib/fdconf.pl

@@ -0,0 +1,7 @@
+use POSIX;
+
+open CONFIG,'welcome.ini';
+
+dup2(fileno(CONFIG), 17);
+
+exec './uwsgi','--ini','fd://17';

contrib/loadapp.pl

@@ -0,0 +1,15 @@
+use IO::Socket::INET;
+
+my $s = IO::Socket::INET->new(PeerAddr => '127.0.0.1', PeerPort => $ARGV[0]);
+
+my $mountpoint = $ARGV[1];
+my $app = $ARGV[2];
+
+my $uwsgi_appid = pack('v', length('UWSGI_APPID')).'UWSGI_APPID'.pack('v', length($mountpoint)).$mountpoint;
+my $uwsgi_script = pack('v', length('UWSGI_SCRIPT')).'UWSGI_SCRIPT'.pack('v', length($app)).$app;
+
+$s->send(pack('CvC', 5, length($uwsgi_appid.$uwsgi_script),0).$uwsgi_appid.$uwsgi_script);
+
+while((my $cnt = $s->recv(my $buf, 4096))> 0) {
+	print $buf;
+}

contrib/securesubscribe.pl

@@ -0,0 +1,36 @@
+#!/usr/bin/perl
+
+use Crypt::OpenSSL::RSA;
+use IO::Socket::INET;
+
+open PK,$ARGV[3];
+my @lines = <PK>;
+close PK;
+
+$rsa_priv = Crypt::OpenSSL::RSA->new_private_key(join('',@lines));
+
+my %items = {};
+
+$items{'key'} = $ARGV[1];
+$items{'address'} = $ARGV[2];
+
+my $uwsgi_pkt = '';
+
+foreach(keys %items) {
+	$uwsgi_pkt .= pack('v', length($_)).$_.pack('v', length($items{$_})).$items{$_};	
+}
+
+my $unix_check = time();
+
+$uwsgi_pkt .= pack('v', 4).'unix'.pack('v', length($unix_check)).$unix_check;
+
+my $signature = $rsa_priv->sign($uwsgi_pkt);
+
+$uwsgi_pkt .= pack('v', 4).'sign'.pack('v', length($signature)).$signature;
+
+
+my $udp = new IO::Socket::INET(PeerAddr => $ARGV[0], Proto => 'udp');
+
+$udp->send(pack('CvC', 224, length($uwsgi_pkt), 0).$uwsgi_pkt);
+
+print ''.(length($uwsgi_pkt)+4).' bytes sent to '.$ARGV[0]."\n";

contrib/subscribe.pl

@@ -0,0 +1,20 @@
+#!/usr/bin/perl
+
+use IO::Socket::INET;
+
+my %items = {};
+
+$items{'key'} = $ARGV[1];
+$items{'address'} = $ARGV[2];
+
+my $uwsgi_pkt = '';
+
+foreach(keys %items) {
+	$uwsgi_pkt .= pack('v', length($_)).$_.pack('v', length($items{$_})).$items{$_};	
+}
+
+my $udp = new IO::Socket::INET(PeerAddr => $ARGV[0], Proto => 'udp');
+
+$udp->send(pack('CvC', 224, length($uwsgi_pkt), 0).$uwsgi_pkt);
+
+print ''.(length($uwsgi_pkt)+4).' bytes sent to '.$ARGV[0]."\n";

contrib/upstart/uwsgi.conf

@@ -12,4 +12,6 @@ env LOGTO=/tmp/uwsgi.log
 env BINPATH=/home/foo/uwsgi/uwsgi
 
 # --no-orphans avoid workers without master
-exec $BINPATH --no-orphans --socket :3033 --uid 1001 --gid 1001 --limit-as 256 -m simple_app --logto $LOGTO -M -p 4
+# --die-on-term could be a good idea
+exec $BINPATH --no-orphans --socket :3033 --uid 1001 --gid 1001 --limit-as 256 -w simple_app --logto $LOGTO -M -p 4
+

contrib/upython

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+COMMAND=./uwsgi
+CONFIG_FILE=
+
+
+FIRST=0
+
+for ARG in $@;do
+  if [ $FIRST -eq 0 ];then
+    FIRST=1
+  else
+    ARGS="$ARGS $ARG"
+  fi
+done
+
+export UWSGI_INHERIT=CONFIG_FILE
+export UWSGI_PYRUN=$1
+export UWSGI_PYARGV=$ARGS
+
+exec $COMMAND

contrib/urack.rb

@@ -1,5 +1,9 @@
 require 'rubygems'
 require 'socket'
+begin
+        require 'bundler/setup'
+rescue LoadError
+end
 require 'rack'
 require 'rack/content_length'
 require 'rack/rewindable_input'

contrib/uwsgi-cache-monitor.py

@@ -0,0 +1,123 @@
+import mmap
+import os
+import struct
+import array
+import time
+import sys
+from optparse import OptionParser
+
+class Cache:
+
+    def __init__(self, filename, cache_slots, block_size=65536, sample_sleep=1):
+
+        self.block_size = block_size
+        self.cache_slots = cache_slots
+
+        self.key_size = 2048
+        self.item_size = 2 + 2 + 4 + 8 + 8 + 8 + 8 + 8 + self.key_size
+        self.block_size_start = self.item_size * self.cache_slots
+
+        fd = os.open(filename, os.O_RDONLY)
+        self.cache_store = mmap.mmap(fd, 0, mmap.MAP_SHARED, mmap.PROT_READ)
+
+        self.sample_sleep = sample_sleep
+        self.samples = 0
+        self.history = []
+        self.cache_full = 0
+        self.cache_empty = 0
+        self.cache_items = 0
+        self.block_sizes = 0
+
+    def store_read_item_block(self, position):
+        pos = self.cache_store.tell()
+        # uwsgi cache stores cache entries first and then the blocks
+        self.cache_store.seek(self.block_size_start + (position * self.block_size))
+        buf = self.cache_store.read(self.block_size)
+        self.cache_store.seek(pos)
+        return buf
+
+    def store_read_item(self, position):
+        buf = self.cache_store.read(self.item_size)
+        fields = struct.unpack_from('@HHIQQQQQ2048c', buf)
+        key = array.array('c', fields[8:self.key_size+8]).tostring().rstrip('\x00')
+
+        if [x for x in key if x!= '\x00']:
+            buf = self.store_read_item_block(position)
+            value = array.array('c', buf).tostring().rstrip('\x00')
+        else:
+            value = ''
+        return (position, key, value, len(value))
+
+    def read(self):
+        data = [self.store_read_item(i) for i in range(self.cache_slots)]
+        self.cache_store.seek(0)
+        self.update_stats(data)
+        if self.sample_sleep:
+            time.sleep(self.sample_sleep)
+        return data
+ 
+    def update_stats(self, data):
+        # data is a list of (position, key, value, len(value)) tuples
+        items = len([1 for x in data if x[3] > 0])
+        self.cache_items += items
+        full, empty = items == self.cache_slots, items == 0
+        if full:
+            self.cache_full += 1
+        if empty:
+            self.cache_empty += 1
+        self.samples += 1
+        block_sizes = sum([x[3] for x in data])
+        self.block_sizes += block_sizes
+        self.history.append({'full': full, 'empty': empty, 'data': data, \
+            'items': items, 'block_sizes': block_sizes})
+
+    def dump(self):
+        return {
+            'samples': self.samples,
+            'history': self.history,
+            'cache_slots': self.cache_slots,
+            'sample_sleep': self.sample_sleep, 
+            'cache_empty': self.cache_empty,
+            'cache_full': self.cache_full,
+            'cache_items': self.cache_items,
+            'block_sizes': self.block_sizes,
+         }
+
+    def show_dump(self):
+        d = self.dump()
+        print
+        print "Recorded %d samples (%d second(s) sleep between samples)" % \
+            (d['samples'], d['sample_sleep'])
+        print "Cache empty %d times, full %d times, %.2f items on average" % \
+            (d['cache_empty'], d['cache_full'], d['cache_items'] / d['samples'])
+        print "Block size average size: %d bytes" % \
+            (d['block_sizes'] / d['cache_items'] * 8)
+        print "Data in cache average: %d bytes" % \
+            (d['block_sizes'] / d['samples'] * 8)
+
+def main(options):
+    cache = Cache(options.cache_store, options.cache_slots, options.block_size,
+        options.sleep_time)
+    print "Recording..."
+    while True:
+        try:
+            data = cache.read()
+        except KeyboardInterrupt:
+            cache.show_dump()
+            sys.exit(0)
+
+if __name__ == '__main__':
+    parser = OptionParser()
+    parser.add_option("-s", "--cache-slots", dest="cache_slots", type="int",
+        help="Slots available in the cache, uwsgi cache option")
+    parser.add_option("-c", "--cache-store", dest="cache_store", default="uwsgi.cache",
+        help="The filename of the cache store, uwsgi cache-store option. Default: uwsgi.cache")
+    parser.add_option("-b", "--block-size", dest="block_size", default=65536, type="int",
+        help="The size of the cache block, uwsgi cache-blocksize option. Default: 65536")
+    parser.add_option("-t", "--sleep-time", dest="sleep_time", default=1, type="int",
+        help="The time to sleep between each sample. Default: 1")
+
+    (options, args) = parser.parse_args()
+    if not options.cache_slots:
+        parser.error('Option -s / --cache-slots is mandatory')
+    main(options)

contrib/uwsgisubscribers.ru

@@ -0,0 +1,96 @@
+require 'sinatra'
+require 'socket'
+require 'json'
+
+module USubscribers
+  def self.uwsgi_get_stats(server)
+    parts = server.split(':')
+      if parts.length > 1
+        s = TCPSocket.open(parts[0], parts[1])
+      else
+        s = UNIXSocket.open(server)
+      end
+      return JSON.parse(s.read())
+  end
+end
+
+template = <<eof
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title><%=@title%></title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="description" content="">
+    <meta name="author" content="unbit">
+    <link href="http://unbit.github.com/bootstrap/css/bootstrap.css" rel="stylesheet">
+    <style>
+      body {
+        padding-top: 60px; /* 60px to make the container go all the way to the bottom of the topbar */
+      }
+    </style>
+    <link href="http://unbit.github.com/bootstrap/css/bootstrap-responsive.css" rel="stylesheet">
+  </head>
+  <body>
+
+    <div class="navbar navbar-fixed-top">
+      <div class="navbar-inner">
+        <div class="container">
+          <a class="brand" href="#"><%=@title%></a>
+        </div>
+      </div>
+    </div>
+
+    <% for server in @servers.keys %>
+    <div class="container">
+      <hr/>
+      <h1>SubscriptionServer: <%=server%></h1>
+      <hr/>
+
+      <div class="row">
+          <% for pool in @servers[server] %>
+              <div class="span6">
+                  <h3><%=pool['key']%> (<%=pool['hits']%> hits)</h3>
+                  <table class="table table-striped table-bordered">
+                    <thead>
+                      <tr>
+                        <th>node</th><th>load</th><th>requests</th>
+                        <th>last check</th>
+                        <th>fail count</th>
+                     </tr>
+                    </thead>
+                    <% for node in pool['nodes'] %>
+                      <tr>
+                        <td><%=node['name']%></td><td><%=node['load']%></td><td><%=node['requests']%></td>
+                        <td><%=Time.at(node['last_check']).strftime("%d-%m-%Y %H:%M:%S")%></td>
+                        <td><%=node['failcnt']%></td>
+                      </tr>
+                    <% end %>
+                  </table>
+              </div>
+          <% end %>
+      </div>
+
+    </div> 
+
+    <% end %>
+
+    <script src="http://unbit.github.com/jquery-1.7.2.min.js" type="text/javascript"></script>
+    <script src="http://unbit.github.com/bootstrap/js/bootstrap.min.js" type="text/javascript"></script>
+  </body>
+</html>
+eof
+
+get '/' do
+  @servers = {}
+  for server in ENV['U_SERVERS'].split(',')
+    stats = USubscribers::uwsgi_get_stats(server) 
+    if stats
+      @servers[server] = stats['subscriptions']
+    end
+  end
+  @title = 'uWSGI subscriptions viewer'
+  erb template
+end
+
+run Sinatra::Application

core/alarm.c

@@ -0,0 +1,342 @@
+#include "../uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+// generate a uwsgi signal on alarm
+void uwsgi_alarm_init_signal(struct uwsgi_alarm_instance *uai) {
+	uai->data8 = atoi(uai->arg);
+}
+
+void uwsgi_alarm_func_signal(struct uwsgi_alarm_instance *uai, char *msg, size_t len) {
+	uwsgi_route_signal(uai->data8);
+}
+
+// run a command on alarm
+void uwsgi_alarm_init_cmd(struct uwsgi_alarm_instance *uai) {
+	uai->data_ptr = uai->arg;
+}
+
+void uwsgi_alarm_func_cmd(struct uwsgi_alarm_instance *uai, char *msg, size_t len) {
+	int pipe[2];
+	if (socketpair(AF_UNIX, SOCK_STREAM, 0, pipe)) {
+		return;
+	}
+	uwsgi_socket_nb(pipe[0]);
+	uwsgi_socket_nb(pipe[1]);
+	if (write(pipe[1], msg, len) != (ssize_t) len) {
+		close(pipe[0]);
+		close(pipe[1]);
+		return;
+	}
+	uwsgi_run_command(uai->data_ptr, pipe, -1);
+	close(pipe[0]);
+	close(pipe[1]);
+}
+
+// pass the log line to a mule
+
+void uwsgi_alarm_init_mule(struct uwsgi_alarm_instance *uai) {
+	uai->data32 = atoi(uai->arg);
+	if (uai->data32 > (uint32_t) uwsgi.mules_cnt) {
+		uwsgi_log_alarm("] invalid mule_id (%d mules available), fallback to 0\n", uwsgi.mules_cnt);
+		uai->data32 = 0;
+	}
+}
+
+void uwsgi_alarm_func_mule(struct uwsgi_alarm_instance *uai, char *msg, size_t len) {
+	// skip if mules are not available
+	if (uwsgi.mules_cnt == 0)
+		return;
+	int fd = uwsgi.shared->mule_queue_pipe[0];
+	if (uai->data32 > 0) {
+		int mule_id = uai->data32 - 1;
+		fd = uwsgi.mules[mule_id].queue_pipe[0];
+	}
+	mule_send_msg(fd, msg, len);
+}
+
+
+// register a new alarm
+void uwsgi_register_alarm(char *name, void (*init) (struct uwsgi_alarm_instance *), void (*func) (struct uwsgi_alarm_instance *, char *, size_t)) {
+	struct uwsgi_alarm *old_ua = NULL, *ua = uwsgi.alarms;
+	while (ua) {
+		// skip already initialized alarms
+		if (!strcmp(ua->name, name)) {
+			return;
+		}
+		old_ua = ua;
+		ua = ua->next;
+	}
+
+	ua = uwsgi_calloc(sizeof(struct uwsgi_alarm));
+	ua->name = name;
+	ua->init = init;
+	ua->func = func;
+
+	if (old_ua) {
+		old_ua->next = ua;
+	}
+	else {
+		uwsgi.alarms = ua;
+	}
+}
+
+// register embedded alarms
+void uwsgi_register_embedded_alarms() {
+	uwsgi_register_alarm("signal", uwsgi_alarm_init_signal, uwsgi_alarm_func_signal);
+	uwsgi_register_alarm("cmd", uwsgi_alarm_init_cmd, uwsgi_alarm_func_cmd);
+	uwsgi_register_alarm("mule", uwsgi_alarm_init_mule, uwsgi_alarm_func_mule);
+}
+
+static int uwsgi_alarm_add(char *name, char *plugin, char *arg) {
+	struct uwsgi_alarm *ua = uwsgi.alarms;
+	while (ua) {
+		if (!strcmp(ua->name, plugin)) {
+			break;
+		}
+		ua = ua->next;
+	}
+
+	if (!ua)
+		return -1;
+
+	struct uwsgi_alarm_instance *old_uai = NULL, *uai = uwsgi.alarm_instances;
+	while (uai) {
+		old_uai = uai;
+		uai = uai->next;
+	}
+
+	uai = uwsgi_calloc(sizeof(struct uwsgi_alarm_instance));
+	uai->name = name;
+	uai->alarm = ua;
+	uai->arg = arg;
+	uai->last_msg = uwsgi_malloc(uwsgi.log_master_bufsize);
+
+	if (old_uai) {
+		old_uai->next = uai;
+	}
+	else {
+		uwsgi.alarm_instances = uai;
+	}
+
+	ua->init(uai);
+	return 0;
+}
+
+// get an alarm instance by its name
+static struct uwsgi_alarm_instance *uwsgi_alarm_get_instance(char *name) {
+	struct uwsgi_alarm_instance *uai = uwsgi.alarm_instances;
+	while (uai) {
+		if (!strcmp(name, uai->name)) {
+			return uai;
+		}
+		uai = uai->next;
+	}
+	return NULL;
+}
+
+
+#ifdef UWSGI_PCRE
+static int uwsgi_alarm_log_add(char *alarms, char *regexp, int negate) {
+
+	struct uwsgi_alarm_log *old_ual = NULL, *ual = uwsgi.alarm_logs;
+	while (ual) {
+		old_ual = ual;
+		ual = ual->next;
+	}
+
+	ual = uwsgi_calloc(sizeof(struct uwsgi_alarm_log));
+	if (uwsgi_regexp_build(regexp, &ual->pattern, &ual->pattern_extra)) {
+		return -1;
+	}
+	ual->negate = negate;
+
+	if (old_ual) {
+		old_ual->next = ual;
+	}
+	else {
+		uwsgi.alarm_logs = ual;
+	}
+
+	// map instances to the log
+	char *list = uwsgi_str(alarms);
+	char *p = strtok(list, ",");
+	while (p) {
+		struct uwsgi_alarm_instance *uai = uwsgi_alarm_get_instance(p);
+		if (!uai) {
+			free(list);
+			return -1;
+		}
+		struct uwsgi_alarm_ll *old_uall = NULL, *uall = ual->alarms;
+		while (uall) {
+			old_uall = uall;
+			uall = uall->next;
+		}
+
+		uall = uwsgi_calloc(sizeof(struct uwsgi_alarm_ll));
+		uall->alarm = uai;
+		if (old_uall) {
+			old_uall->next = uall;
+		}
+		else {
+			ual->alarms = uall;
+		}
+		p = strtok(NULL, ",");
+	}
+	free(list);
+	return 0;
+}
+#endif
+
+static void uwsgi_alarm_thread_loop(struct uwsgi_thread *ut) {
+	char *buf = uwsgi_malloc(uwsgi.alarm_msg_size + sizeof(long));
+	for (;;) {
+		int interesting_fd = -1;
+                int ret = event_queue_wait(ut->queue, -1, &interesting_fd);
+		if (ret > 0) {
+			ssize_t len = read(ut->pipe[1], buf, uwsgi.alarm_msg_size + sizeof(long));
+			if (len > (ssize_t)(sizeof(long) + 1)) {
+				size_t msg_size = len - sizeof(long);
+				char *msg = buf + sizeof(long);
+				long ptr = 0;
+				memcpy(&ptr, buf, sizeof(long));
+				struct uwsgi_alarm_instance *uai = (struct uwsgi_alarm_instance *) ptr;
+				if (!uai)
+					break;
+				uwsgi_alarm_run(uai, msg, msg_size);
+			}
+		}
+	}
+	free(buf);
+}
+
+// initialize alarms, instances and log regexps
+void uwsgi_alarms_init() {
+
+	if (!uwsgi.master_process) return;
+
+	// first of all, create instance of alarms
+	struct uwsgi_string_list *usl = uwsgi.alarm_list;
+	while (usl) {
+		char *line = uwsgi_str(usl->value);
+		char *space = strchr(line, ' ');
+		if (!space) {
+			uwsgi_log("invalid alarm syntax: %s\n", usl->value);
+			exit(1);
+		}
+		*space = 0;
+		char *plugin = space + 1;
+		char *colon = strchr(plugin, ':');
+		if (!colon) {
+			uwsgi_log("invalid alarm syntax: %s\n", usl->value);
+			exit(1);
+		}
+		*colon = 0;
+		char *arg = colon + 1;
+		// here the alarm is mapped to a name and initialized
+		if (uwsgi_alarm_add(line, plugin, arg)) {
+			uwsgi_log("invalid alarm: %s\n", usl->value);
+			exit(1);
+		}
+		usl = usl->next;
+	}
+
+	if (!uwsgi.alarm_instances) return;
+
+#ifdef UWSGI_PCRE
+	// then map log-alarm
+	usl = uwsgi.alarm_logs_list;
+	while (usl) {
+		char *line = uwsgi_str(usl->value);
+		char *space = strchr(line, ' ');
+		if (!space) {
+			uwsgi_log("invalid log-alarm syntax: %s\n", usl->value);
+			exit(1);
+		}
+		*space = 0;
+		char *regexp = space + 1;
+		// here the log-alarm is created
+		if (uwsgi_alarm_log_add(line, regexp, usl->custom)) {
+			uwsgi_log("invalid log-alarm: %s\n", usl->value);
+			exit(1);
+		}
+
+		usl = usl->next;
+	}
+#endif
+}
+
+void uwsgi_alarm_thread_start() {
+	if (!uwsgi.alarm_instances) return;
+	// start the alarm_thread
+	uwsgi.alarm_thread = uwsgi_thread_new(uwsgi_alarm_thread_loop);
+	if (!uwsgi.alarm_thread) {
+		uwsgi_log("unable to spawn alarm thread\n");
+		exit(1);
+	}
+}
+
+#ifdef UWSGI_PCRE
+// check if a log should raise an alarm
+void uwsgi_alarm_log_check(char *msg, size_t len) {
+	if (!uwsgi_strncmp(msg, len, "[uwsgi-alarm", 12))
+		return;
+	struct uwsgi_alarm_log *ual = uwsgi.alarm_logs;
+	while (ual) {
+		if (uwsgi_regexp_match(ual->pattern, ual->pattern_extra, msg, len) >= 0) {
+			if (!ual->negate) {
+				uwsgi_alarm_log_run(ual, msg, len);
+			}
+			else {
+				break;
+			}
+		}
+		ual = ual->next;
+	}
+}
+#endif
+
+// call the alarm func
+void uwsgi_alarm_run(struct uwsgi_alarm_instance *uai, char *msg, size_t len) {
+	time_t now = uwsgi_now();
+	// avoid alarm storming/loop if last message is the same
+	if (!uwsgi_strncmp(msg, len, uai->last_msg, uai->last_msg_size)) {
+		if (now - uai->last_run < uwsgi.alarm_freq)
+			return;
+	}
+	uai->alarm->func(uai, msg, len);
+	uai->last_run = uwsgi_now();
+	memcpy(uai->last_msg, msg, len);
+	uai->last_msg_size = len;
+}
+
+#ifdef UWSGI_PCRE
+// call the alarms mapped to a log line
+void uwsgi_alarm_log_run(struct uwsgi_alarm_log *ual, char *msg, size_t len) {
+	struct uwsgi_alarm_ll *uall = ual->alarms;
+	while (uall) {
+		uwsgi_alarm_run(uall->alarm, msg, len);
+		uall = uall->next;
+	}
+}
+#endif
+
+
+// this is the api function workers,mules and whatever you want can call from code
+void uwsgi_alarm_trigger(char *alarm_instance_name, char *msg, size_t len) {
+	if (!uwsgi.alarm_thread) return;
+	if (len > uwsgi.alarm_msg_size) return;
+	struct uwsgi_alarm_instance *uai = uwsgi_alarm_get_instance(alarm_instance_name);
+	if (!uai) return;
+
+	struct iovec iov[2];
+	iov[0].iov_base = &uai;
+	iov[0].iov_len = sizeof(long);
+	iov[1].iov_base = msg;
+	iov[1].iov_len = len;
+
+	// now send the message to the alarm thread
+	if (writev(uwsgi.alarm_thread->pipe[0], iov, 2) != (ssize_t) (len+sizeof(long))) {
+		uwsgi_error("[uwsgi-alarm-error] uwsgi_alarm_trigger()/writev()");
+	}
+}

core/async.c

@@ -1,7 +1,37 @@
-#include "uwsgi.h"
+#include <uwsgi.h>
 
 extern struct uwsgi_server uwsgi;
 
+void uwsgi_async_queue_is_full(time_t now) {
+	if (now > uwsgi.async_queue_is_full) {
+		uwsgi_log_verbose("[DANGER] async queue is full !!!\n");
+		uwsgi.async_queue_is_full = now;
+	}
+}
+
+void uwsgi_async_init() {
+	int i;
+
+	uwsgi.async_queue = event_queue_init();
+
+	if (uwsgi.async_queue < 0) {
+		exit(1);
+	}
+
+	uwsgi_add_sockets_to_queue(uwsgi.async_queue, -1);
+
+	uwsgi.rb_async_timeouts = uwsgi_init_rb_timer();
+
+	uwsgi.async_queue_unused = uwsgi_malloc(sizeof(struct wsgi_request *) * uwsgi.async);
+
+	for (i = 0; i < uwsgi.async; i++) {
+		uwsgi.async_queue_unused[i] = &uwsgi.workers[uwsgi.mywid].cores[i].req;
+	}
+
+	uwsgi.async_queue_unused_ptr = uwsgi.async - 1;
+
+}
+
 struct wsgi_request *find_wsgi_req_proto_by_fd(int fd) {
 	return uwsgi.async_proto_fd_table[fd];
 }
@@ -10,51 +40,51 @@ struct wsgi_request *find_wsgi_req_by_fd(int fd) {
 	return uwsgi.async_waiting_fd_table[fd];
 }
 
-void runqueue_remove(struct uwsgi_async_request *u_request) {
+static void runqueue_remove(struct uwsgi_async_request *u_request) {
 
 	struct uwsgi_async_request *parent = u_request->prev;
 	struct uwsgi_async_request *child = u_request->next;
-	
-        if (parent) {
-        	parent->next = child;
-        }
-        if (child) {
-        	child->prev = parent;
-        }
 
-        if (parent == NULL) {
-        	uwsgi.async_runqueue = child;
-        }
+	if (parent) {
+		parent->next = child;
+	}
+	if (child) {
+		child->prev = parent;
+	}
+
+	if (parent == NULL) {
+		uwsgi.async_runqueue = child;
+	}
 
 	if (u_request == uwsgi.async_runqueue_last) {
 		uwsgi.async_runqueue_last = parent;
 	}
 
-        free(u_request);
+	free(u_request);
 
 	uwsgi.async_runqueue_cnt--;
 }
 
-void runqueue_push(struct wsgi_request *wsgi_req) {
+static void runqueue_push(struct wsgi_request *wsgi_req) {
 
 	struct uwsgi_async_request *uar;
 
 	if (uwsgi.async_runqueue == NULL) {
-        	// empty runqueue, create a new one
-        	uwsgi.async_runqueue = uwsgi_malloc(sizeof(struct uwsgi_async_request));
-        	uwsgi.async_runqueue->next = NULL;
-        	uwsgi.async_runqueue->prev = NULL;
-        	uwsgi.async_runqueue->wsgi_req = wsgi_req;
-        	uwsgi.async_runqueue_last = uwsgi.async_runqueue;
-        }
-        else {
+		// empty runqueue, create a new one
+		uwsgi.async_runqueue = uwsgi_malloc(sizeof(struct uwsgi_async_request));
+		uwsgi.async_runqueue->next = NULL;
+		uwsgi.async_runqueue->prev = NULL;
+		uwsgi.async_runqueue->wsgi_req = wsgi_req;
+		uwsgi.async_runqueue_last = uwsgi.async_runqueue;
+	}
+	else {
 		uar = uwsgi_malloc(sizeof(struct uwsgi_async_request));
-        	uar->prev = uwsgi.async_runqueue_last;
-        	uar->next = NULL;
-        	uar->wsgi_req = wsgi_req;
-        	uwsgi.async_runqueue_last->next = uar;
-        	uwsgi.async_runqueue_last = uar;
-        }
+		uar->prev = uwsgi.async_runqueue_last;
+		uar->next = NULL;
+		uar->wsgi_req = wsgi_req;
+		uwsgi.async_runqueue_last->next = uar;
+		uwsgi.async_runqueue_last = uar;
+	}
 
 	uwsgi.async_runqueue_cnt++;
 
@@ -73,30 +103,30 @@ struct wsgi_request *find_first_available_wsgi_req() {
 	return wsgi_req;
 }
 
-void async_expire_timeouts() {
+static void async_expire_timeouts(uint64_t now) {
 
 	struct wsgi_request *wsgi_req;
-	time_t current_time = time(NULL);
 	struct uwsgi_async_fd *uaf = NULL, *current_uaf;
 
 	struct uwsgi_rb_timer *urbt;
 
-        for(;;) {
+	for (;;) {
 
-                urbt = uwsgi_min_rb_timer(uwsgi.rb_async_timeouts);
+		urbt = uwsgi_min_rb_timer(uwsgi.rb_async_timeouts, NULL);
 
-                if (urbt == NULL) return;
+		if (urbt == NULL)
+			return;
 
-                if (urbt->key <= current_time) {
-                        wsgi_req = (struct wsgi_request *) urbt->data;
+		if (urbt->value <= now) {
+			wsgi_req = (struct wsgi_request *) urbt->data;
 			// timeout expired
 			wsgi_req->async_timed_out = 1;
-			rb_erase(&wsgi_req->async_timeout->rbt, uwsgi.rb_async_timeouts);
+			uwsgi_del_rb_timer(uwsgi.rb_async_timeouts, wsgi_req->async_timeout);
 			free(wsgi_req->async_timeout);
 			wsgi_req->async_timeout = NULL;
 			uaf = wsgi_req->waiting_fds;
 			// remove fds from monitoring (no problem modifying the queue here, as the function is executed only when there are no fd ready)
-			while(uaf) {
+			while (uaf) {
 				event_queue_del_fd(uwsgi.async_queue, uaf->fd, uaf->event);
 				uwsgi.async_waiting_fd_table[uaf->fd] = NULL;
 				current_uaf = uaf;
@@ -106,22 +136,23 @@ void async_expire_timeouts() {
 			wsgi_req->waiting_fds = NULL;
 			// put th request in the runqueue
 			runqueue_push(wsgi_req);
-                        continue;
-                }
+			continue;
+		}
 
-                break;
-        }
+		break;
+	}
 
 }
 
-void async_add_fd_read(struct wsgi_request *wsgi_req, int fd, int timeout) {
+int async_add_fd_read(struct wsgi_request *wsgi_req, int fd, int timeout) {
 
 	struct uwsgi_async_fd *last_uad = NULL, *uad = wsgi_req->waiting_fds;
 
-	if (fd < 0) return ;
+	if (fd < 0)
+		return -1;
 
 	// find first slot
-	while(uad) {
+	while (uad) {
 		last_uad = uad;
 		uad = uad->next;
 	}
@@ -143,57 +174,93 @@ void async_add_fd_read(struct wsgi_request *wsgi_req, int fd, int timeout) {
 		async_add_timeout(wsgi_req, timeout);
 	}
 	uwsgi.async_waiting_fd_table[fd] = wsgi_req;
-	event_queue_add_fd_read(uwsgi.async_queue, fd);
-	
+	wsgi_req->async_force_again = 1;
+	return event_queue_add_fd_read(uwsgi.async_queue, fd);
+}
+
+static int async_wait_fd_read(int fd, int timeout) {
+	struct wsgi_request *wsgi_req = current_wsgi_req();
+	if (async_add_fd_read(wsgi_req, fd, timeout)) {
+		return -1;
+	}
+	if (uwsgi.schedule_to_main) {
+		uwsgi.schedule_to_main(wsgi_req);
+	}
+	if (wsgi_req->async_timed_out) {
+		wsgi_req->async_timed_out = 0;
+		return 0;
+	}
+	return 1;
 }
 
 void async_add_timeout(struct wsgi_request *wsgi_req, int timeout) {
 
 	if (timeout > 0 && wsgi_req->async_timeout == NULL) {
-        	wsgi_req->async_timeout = uwsgi_add_rb_timer(uwsgi.rb_async_timeouts, time(NULL)+timeout, wsgi_req);
-        }
+		wsgi_req->async_timeout = uwsgi_add_rb_timer(uwsgi.rb_async_timeouts, uwsgi_now() + timeout, wsgi_req);
+	}
 
 }
 
-void async_add_fd_write(struct wsgi_request *wsgi_req, int fd, int timeout) {
+int async_add_fd_write(struct wsgi_request *wsgi_req, int fd, int timeout) {
 
-        struct uwsgi_async_fd *last_uad = NULL, *uad = wsgi_req->waiting_fds;
+	struct uwsgi_async_fd *last_uad = NULL, *uad = wsgi_req->waiting_fds;
 
-	if (fd < 0) return ;
+	if (fd < 0)
+		return -1;
 
-        // find first slot
-        while(uad) {
-                last_uad = uad;
-                uad = uad->next;
-        }
+	// find first slot
+	while (uad) {
+		last_uad = uad;
+		uad = uad->next;
+	}
 
-        uad = uwsgi_malloc(sizeof(struct uwsgi_async_fd));
-        uad->fd = fd;
+	uad = uwsgi_malloc(sizeof(struct uwsgi_async_fd));
+	uad->fd = fd;
 	uad->event = event_queue_write();
-        uad->prev = last_uad;
-        uad->next = NULL;
+	uad->prev = last_uad;
+	uad->next = NULL;
 
-        if (last_uad) {
-                last_uad->next = uad;
-        }
-        else {
-                wsgi_req->waiting_fds = uad;
-        }
+	if (last_uad) {
+		last_uad->next = uad;
+	}
+	else {
+		wsgi_req->waiting_fds = uad;
+	}
 
 	if (timeout > 0) {
 		async_add_timeout(wsgi_req, timeout);
 	}
 
 	uwsgi.async_waiting_fd_table[fd] = wsgi_req;
-        event_queue_add_fd_write(uwsgi.async_queue, fd);
+	wsgi_req->async_force_again = 1;
+	return event_queue_add_fd_write(uwsgi.async_queue, fd);
+}
 
+static int async_wait_fd_write(int fd, int timeout) {
+	struct wsgi_request *wsgi_req = current_wsgi_req();
+	if (async_add_fd_write(wsgi_req, fd, timeout)) {
+		return -1;
+	}
+	if (uwsgi.schedule_to_main) {
+		uwsgi.schedule_to_main(wsgi_req);
+	}
+	if (wsgi_req->async_timed_out) {
+		wsgi_req->async_timed_out = 0;
+		return 0;
+	}
+	return 1;
 }
 
 void async_schedule_to_req(void) {
-	uwsgi.wsgi_req->async_status = uwsgi.p[uwsgi.wsgi_req->uh.modifier1]->request(uwsgi.wsgi_req);
+	uwsgi.wsgi_req->async_status = uwsgi.p[uwsgi.wsgi_req->uh->modifier1]->request(uwsgi.wsgi_req);
 }
 
-void *async_loop(void *arg1) {
+void async_loop() {
+
+	if (uwsgi.async < 2) {
+		uwsgi_log("the async loop engine requires async mode (--async <n>)\n");
+		exit(1);
+	}
 
 	struct uwsgi_async_fd *tmp_uaf;
 	int interesting_fd, i;
@@ -202,7 +269,7 @@ void *async_loop(void *arg1) {
 	int is_a_new_connection;
 	int proto_parser_status;
 
-	time_t now, last_now = 0;
+	uint64_t now;
 
 	static struct uwsgi_async_request *current_request = NULL, *next_async_request = NULL;
 
@@ -212,93 +279,84 @@ void *async_loop(void *arg1) {
 	uwsgi.async_runqueue = NULL;
 	uwsgi.async_runqueue_cnt = 0;
 
+	uwsgi.wait_write_hook = async_wait_fd_write;
+        uwsgi.wait_read_hook = async_wait_fd_read;
+
 	if (uwsgi.signal_socket > -1) {
 		event_queue_add_fd_read(uwsgi.async_queue, uwsgi.signal_socket);
+		event_queue_add_fd_read(uwsgi.async_queue, uwsgi.my_signal_socket);
 	}
 
 	// set a default request manager
-        if (!uwsgi.schedule_to_req) uwsgi.schedule_to_req = async_schedule_to_req;
+	if (!uwsgi.schedule_to_req)
+		uwsgi.schedule_to_req = async_schedule_to_req;
+
+	if (!uwsgi.schedule_to_main) {
+		uwsgi_log("*** WARNING *** async mode without coroutine/greenthread engine loaded !!!\n");
+	}
 
 	while (uwsgi.workers[uwsgi.mywid].manage_next_request) {
 
+		now = (uint64_t) uwsgi_now();
 		if (uwsgi.async_runqueue_cnt) {
 			timeout = 0;
 		}
 		else {
-			min_timeout = uwsgi_min_rb_timer(uwsgi.rb_async_timeouts);
-			if (uwsgi.async_runqueue_cnt) {
-                        	timeout = 0;
-			}
-                	if (min_timeout) {
-                        	timeout = min_timeout->key - time(NULL);
-                        	if (timeout <= 0) {
-                                	async_expire_timeouts();
-                                	timeout = 0;
-                        	}
+			min_timeout = uwsgi_min_rb_timer(uwsgi.rb_async_timeouts, NULL);
+			if (min_timeout) {
+				timeout = min_timeout->value - now;
+				if (timeout <= 0) {
+					async_expire_timeouts(now);
+					timeout = 0;
+				}
 			}
 			else {
 				timeout = -1;
 			}
-                }
+		}
 
 		uwsgi.async_nevents = event_queue_wait_multi(uwsgi.async_queue, timeout, events, 64);
 
+		now = (uint64_t) uwsgi_now();
 		// timeout ???
 		if (uwsgi.async_nevents == 0) {
-                	async_expire_timeouts();
+			async_expire_timeouts(now);
 		}
 
 
-		for(i=0;i<uwsgi.async_nevents;i++) {
+		for (i = 0; i < uwsgi.async_nevents; i++) {
 			// manage events
 			interesting_fd = event_queue_interesting_fd(events, i);
 
+			if (uwsgi.signal_socket > -1 && (interesting_fd == uwsgi.signal_socket || interesting_fd == uwsgi.my_signal_socket)) {
+				uwsgi_receive_signal(interesting_fd, "worker", uwsgi.mywid);
+				continue;
+			}
+
+
 			is_a_new_connection = 0;
 
 			// new request coming in ?
 
 			uwsgi_sock = uwsgi.sockets;
-			while(uwsgi_sock) {
+			while (uwsgi_sock) {
 
 				if (interesting_fd == uwsgi_sock->fd) {
 
-					is_a_new_connection = 1;	
+					is_a_new_connection = 1;
 
 					uwsgi.wsgi_req = find_first_available_wsgi_req();
 					if (uwsgi.wsgi_req == NULL) {
-						now = time(NULL);
-						if (now > last_now) {
-							uwsgi_log("async queue is full !!!\n");
-							last_now = now;
-						}
-						break;;
+						uwsgi_async_queue_is_full((time_t)now);
+						break;
 					}
 
-					wsgi_req_setup(uwsgi.wsgi_req, uwsgi.wsgi_req->async_id, uwsgi_sock );
+					wsgi_req_setup(uwsgi.wsgi_req, uwsgi.wsgi_req->async_id, uwsgi_sock);
 					if (wsgi_req_simple_accept(uwsgi.wsgi_req, interesting_fd)) {
-#ifdef UWSGI_EVENT_USE_PORT
-                                		event_queue_add_fd_read(uwsgi.async_queue, interesting_fd);
-#endif
 						uwsgi.async_queue_unused_ptr++;
 						uwsgi.async_queue_unused[uwsgi.async_queue_unused_ptr] = uwsgi.wsgi_req;
 						break;
 					}
-#ifdef UWSGI_EVENT_USE_PORT
-                                	event_queue_add_fd_read(uwsgi.async_queue, interesting_fd);
-#endif
-
-// on linux we do not need to reset the socket to blocking state
-#ifndef __linux__
-					if (uwsgi.numproc > 1) {
-	                                	/* re-set blocking socket */
-	                                	if (fcntl(uwsgi.wsgi_req->poll.fd, F_SETFL, uwsgi_sock->arg) < 0) {
-	                                        	uwsgi_error("fcntl()");
-							uwsgi.async_queue_unused_ptr++;
-							uwsgi.async_queue_unused[uwsgi.async_queue_unused_ptr] = uwsgi.wsgi_req;
-	                                		break;
-						}
-					}
-#endif
 
 					if (wsgi_req_async_recv(uwsgi.wsgi_req)) {
 						uwsgi.async_queue_unused_ptr++;
@@ -322,22 +380,21 @@ void *async_loop(void *arg1) {
 				if (uwsgi.wsgi_req) {
 					proto_parser_status = uwsgi.wsgi_req->socket->proto(uwsgi.wsgi_req);
 					// reset timeout
-					rb_erase(&uwsgi.wsgi_req->async_timeout->rbt, uwsgi.rb_async_timeouts);
+					uwsgi_del_rb_timer(uwsgi.rb_async_timeouts, uwsgi.wsgi_req->async_timeout);
 					free(uwsgi.wsgi_req->async_timeout);
 					uwsgi.wsgi_req->async_timeout = NULL;
 					// parsing complete
 					if (!proto_parser_status) {
-						// remove fd from event poll and fd proto table	
-#ifndef UWSGI_EVENT_USE_PORT
-						event_queue_del_fd(uwsgi.async_queue, interesting_fd, event_queue_read());
-#endif
+						// remove fd from event poll and fd proto table 
 						uwsgi.async_proto_fd_table[interesting_fd] = NULL;
+						event_queue_del_fd(uwsgi.async_queue, interesting_fd, event_queue_read());
 						// put request in the runqueue
 						runqueue_push(uwsgi.wsgi_req);
 						continue;
 					}
-					else if (proto_parser_status == -1) {
-						uwsgi_log("error parsing request\n");
+					else if (proto_parser_status < 0) {
+						if (proto_parser_status == -1)
+							uwsgi_log("error parsing request\n");
 						uwsgi.async_proto_fd_table[interesting_fd] = NULL;
 						close(interesting_fd);
 						continue;
@@ -356,27 +413,27 @@ void *async_loop(void *arg1) {
 				}
 
 				// remove all the fd monitors and timeout
-				while(uwsgi.wsgi_req->waiting_fds) {
-#ifndef UWSGI_EVENT_USE_PORT
-                                        event_queue_del_fd(uwsgi.async_queue, uwsgi.wsgi_req->waiting_fds->fd, uwsgi.wsgi_req->waiting_fds->event);
-#endif
-                                        tmp_uaf = uwsgi.wsgi_req->waiting_fds;
-                                        uwsgi.async_waiting_fd_table[tmp_uaf->fd] = NULL;
-                                        uwsgi.wsgi_req->waiting_fds = tmp_uaf->next;
-                                        free(tmp_uaf);
-                                }
+				while (uwsgi.wsgi_req->waiting_fds) {
+					tmp_uaf = uwsgi.wsgi_req->waiting_fds;
+					uwsgi.async_waiting_fd_table[tmp_uaf->fd] = NULL;
+					event_queue_del_fd(uwsgi.async_queue, tmp_uaf->fd, tmp_uaf->event);
+					uwsgi.wsgi_req->waiting_fds = tmp_uaf->next;
+					free(tmp_uaf);
+				}
 				uwsgi.wsgi_req->waiting_fds = NULL;
-                                if (uwsgi.wsgi_req->async_timeout) {
-                                        rb_erase(&uwsgi.wsgi_req->async_timeout->rbt, uwsgi.rb_async_timeouts);
-                                        free(uwsgi.wsgi_req->async_timeout);
-                                        uwsgi.wsgi_req->async_timeout = NULL;
-                                }	
+				if (uwsgi.wsgi_req->async_timeout) {
+					uwsgi_del_rb_timer(uwsgi.rb_async_timeouts, uwsgi.wsgi_req->async_timeout);
+					free(uwsgi.wsgi_req->async_timeout);
+					uwsgi.wsgi_req->async_timeout = NULL;
+				}
 
 				uwsgi.wsgi_req->async_ready_fd = 1;
 				uwsgi.wsgi_req->async_last_ready_fd = interesting_fd;
 
 				// put the request in the runqueue again
 				runqueue_push(uwsgi.wsgi_req);
+				// avoid managing other enqueued events...
+				break;
 			}
 		}
 
@@ -395,20 +452,18 @@ void *async_loop(void *arg1) {
 			// request ended ?
 			if (uwsgi.wsgi_req->async_status <= UWSGI_OK) {
 				// remove all the monitored fds and timeout
-				while(uwsgi.wsgi_req->waiting_fds) {
-#ifndef UWSGI_EVENT_USE_PORT
-					event_queue_del_fd(uwsgi.async_queue, uwsgi.wsgi_req->waiting_fds->fd, uwsgi.wsgi_req->waiting_fds->event);
-#endif
+				while (uwsgi.wsgi_req->waiting_fds) {
 					tmp_uaf = uwsgi.wsgi_req->waiting_fds;
 					uwsgi.async_waiting_fd_table[tmp_uaf->fd] = NULL;
+					event_queue_del_fd(uwsgi.async_queue, tmp_uaf->fd, tmp_uaf->event);
 					uwsgi.wsgi_req->waiting_fds = tmp_uaf->next;
 					free(tmp_uaf);
 				}
 				uwsgi.wsgi_req->waiting_fds = NULL;
 				if (uwsgi.wsgi_req->async_timeout) {
-					rb_erase(&uwsgi.wsgi_req->async_timeout->rbt, uwsgi.rb_async_timeouts);
-                        		free(uwsgi.wsgi_req->async_timeout);
-                        		uwsgi.wsgi_req->async_timeout = NULL;
+					uwsgi_del_rb_timer(uwsgi.rb_async_timeouts, uwsgi.wsgi_req->async_timeout);
+					free(uwsgi.wsgi_req->async_timeout);
+					uwsgi.wsgi_req->async_timeout = NULL;
 				}
 
 				// remove from the list
@@ -422,7 +477,7 @@ void *async_loop(void *arg1) {
 
 			}
 			else if (uwsgi.wsgi_req->waiting_fds || uwsgi.wsgi_req->async_timeout) {
-				// remove this request from suspended list	
+				// remove this request from suspended list      
 				runqueue_remove(current_request);
 			}
 
@@ -433,6 +488,4 @@ void *async_loop(void *arg1) {
 
 	}
 
-	return NULL;
-
 }

core/buffer.c

@@ -0,0 +1,356 @@
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+struct uwsgi_buffer *uwsgi_buffer_new(size_t len) {
+	struct uwsgi_buffer *ub = uwsgi_calloc(sizeof(struct uwsgi_buffer));
+
+	if (len) {
+		ub->buf = uwsgi_malloc(len);
+		ub->len = len;
+	}
+	return ub;
+
+}
+
+int uwsgi_buffer_fix(struct uwsgi_buffer *ub, size_t len) {
+	if (ub->limit > 0 && len > ub->limit)
+		return -1;
+	if (ub->len < len) {
+		char *new_buf = realloc(ub->buf, len);
+		if (!new_buf) {
+			uwsgi_error("uwsgi_buffer_fix()");
+			return -1;
+		}
+		ub->buf = new_buf;
+		ub->len = len;
+	}
+	return 0;
+}
+
+int uwsgi_buffer_ensure(struct uwsgi_buffer *ub, size_t len) {
+	size_t remains = ub->len - ub->pos;
+	if (remains < len) {
+		size_t new_len = ub->len + (len - remains);
+		if (ub->limit > 0 && new_len > ub->limit) {
+			new_len = ub->limit;
+			if (new_len == ub->len)
+				return -1;
+		}
+		char *new_buf = realloc(ub->buf, new_len);
+		if (!new_buf) {
+			uwsgi_error("uwsgi_buffer_ensure()");
+			return -1;
+		}
+		ub->buf = new_buf;
+		ub->len = new_len;
+	}
+	return 0;
+}
+
+int uwsgi_buffer_insert(struct uwsgi_buffer *ub, size_t pos, char *buf, size_t len) {
+	size_t to_move = (ub->pos-pos);
+	if (uwsgi_buffer_ensure(ub, len)) return -1;
+	memmove(ub->buf+pos+len, ub->buf+pos, to_move);
+	memcpy(ub->buf+pos, buf, len);
+	ub->pos += len;
+	return 0;
+}
+
+int uwsgi_buffer_insert_chunked(struct uwsgi_buffer *ub, size_t pos, size_t len) {
+	// 0xFFFFFFFFFFFFFFFF\r\n\0
+	char chunked[19];
+	int ret = snprintf(chunked, 19, "%X\r\n", (unsigned int) len);
+        if (ret <= 0 || ret > 19) {
+                return -1;
+        }
+	return uwsgi_buffer_insert(ub, pos, chunked, ret);
+}
+
+int uwsgi_buffer_append_chunked(struct uwsgi_buffer *ub, size_t len) {
+        // 0xFFFFFFFFFFFFFFFF\r\n\0
+        char chunked[19];
+        int ret = snprintf(chunked, 19, "%X\r\n", (unsigned int) len);
+        if (ret <= 0 || ret > 19) {
+                return -1;
+        }
+        return uwsgi_buffer_append(ub, chunked, ret);
+}
+
+
+int uwsgi_buffer_decapitate(struct uwsgi_buffer *ub, size_t len) {
+	if (len > ub->pos) return -1;
+	memmove(ub->buf, ub->buf + len, ub->pos-len);
+	ub->pos = ub->pos-len;
+	return 0;
+}
+
+int uwsgi_buffer_byte(struct uwsgi_buffer *ub, char byte) {
+	return uwsgi_buffer_append(ub, &byte, 1);
+}
+
+int uwsgi_buffer_u8(struct uwsgi_buffer *ub, uint8_t u8) {
+	return uwsgi_buffer_append(ub, (char *) &u8, 1);
+}
+
+int uwsgi_buffer_append(struct uwsgi_buffer *ub, char *buf, size_t len) {
+
+	size_t remains = ub->len - ub->pos;
+
+	if (len > remains) {
+		size_t chunk_size = UMAX(len, (size_t) uwsgi.page_size);
+		if (ub->limit > 0 && ub->len + chunk_size > ub->limit) {
+			// retry with another minimal size
+			if (len < (size_t) uwsgi.page_size) {
+				chunk_size = len;
+			}
+			if (ub->len + chunk_size > ub->limit)
+				return -1;
+		}
+		char *new_buf = realloc(ub->buf, ub->len + chunk_size);
+		if (!new_buf) {
+			uwsgi_error("uwsgi_buffer_append()");
+			return -1;
+		}
+		ub->buf = new_buf;
+		ub->len += chunk_size;
+	}
+
+	memcpy(ub->buf + ub->pos, buf, len);
+	ub->pos += len;
+	return 0;
+}
+
+int uwsgi_buffer_append_json(struct uwsgi_buffer *ub, char *buf, size_t len) {
+	// need to escape \ and "
+	size_t i;
+	for(i=0;i<len;i++) {
+		if (buf[i] == '"') {
+			if (uwsgi_buffer_append(ub, "\\\"", 2)) return -1;
+		}
+		else if (buf[i] == '\\') {
+			if (uwsgi_buffer_append(ub, "\\\\", 2)) return -1;
+		}
+		else {
+			if (uwsgi_buffer_append(ub, buf+i, 1)) return -1;
+		}
+	}
+	return 0;
+}
+
+int uwsgi_buffer_u16le(struct uwsgi_buffer *ub, uint16_t num) {
+	uint8_t buf[2];
+	buf[0] = (uint8_t) (num & 0xff);
+        buf[1] = (uint8_t) ((num >> 8) & 0xff);
+	return uwsgi_buffer_append(ub, (char *) buf, 2);
+}
+
+int uwsgi_buffer_u16be(struct uwsgi_buffer *ub, uint16_t num) {
+        uint8_t buf[2];
+        buf[1] = (uint8_t) (num & 0xff);
+        buf[0] = (uint8_t) ((num >> 8) & 0xff);
+        return uwsgi_buffer_append(ub, (char *) buf, 2);
+}
+
+int uwsgi_buffer_u24be(struct uwsgi_buffer *ub, uint32_t num) {
+        uint8_t buf[3];
+        buf[2] = (uint8_t) (num & 0xff);
+        buf[1] = (uint8_t) ((num >> 8) & 0xff);
+        buf[0] = (uint8_t) ((num >> 16) & 0xff);
+        return uwsgi_buffer_append(ub, (char *) buf, 3);
+}
+
+int uwsgi_buffer_u32be(struct uwsgi_buffer *ub, uint32_t num) {
+        uint8_t buf[4];
+        buf[3] = (uint8_t) (num & 0xff);
+        buf[2] = (uint8_t) ((num >> 8) & 0xff);
+        buf[1] = (uint8_t) ((num >> 16) & 0xff);
+        buf[0] = (uint8_t) ((num >> 24) & 0xff);
+        return uwsgi_buffer_append(ub, (char *) buf, 4);
+}
+
+int uwsgi_buffer_u32le(struct uwsgi_buffer *ub, uint32_t num) {
+        uint8_t buf[4];
+        buf[0] = (uint8_t) (num & 0xff);
+        buf[1] = (uint8_t) ((num >> 8) & 0xff);
+        buf[2] = (uint8_t) ((num >> 16) & 0xff);
+        buf[3] = (uint8_t) ((num >> 24) & 0xff);
+        return uwsgi_buffer_append(ub, (char *) buf, 4);
+}
+
+int uwsgi_buffer_u64be(struct uwsgi_buffer *ub, uint64_t num) {
+        uint8_t buf[8];
+        buf[7] = (uint8_t) (num & 0xff);
+        buf[6] = (uint8_t) ((num >> 8) & 0xff);
+        buf[5] = (uint8_t) ((num >> 16) & 0xff);
+        buf[4] = (uint8_t) ((num >> 24) & 0xff);
+        buf[3] = (uint8_t) ((num >> 32) & 0xff);
+        buf[2] = (uint8_t) ((num >> 40) & 0xff);
+        buf[1] = (uint8_t) ((num >> 48) & 0xff);
+        buf[0] = (uint8_t) ((num >> 56) & 0xff);
+        return uwsgi_buffer_append(ub, (char *) buf, 8);
+}
+
+
+int uwsgi_buffer_append_ipv4(struct uwsgi_buffer *ub, void *addr) {
+	char ip[INET_ADDRSTRLEN];
+	if (!inet_ntop(AF_INET, addr, ip, INET_ADDRSTRLEN)) {
+		uwsgi_error("uwsgi_buffer_append_ipv4() -> inet_ntop()");
+		return -1;
+	}
+	return uwsgi_buffer_append(ub, ip, strlen(ip));
+}
+
+
+int uwsgi_buffer_num64(struct uwsgi_buffer *ub, int64_t num) {
+	char buf[sizeof(UMAX64_STR)+1];
+	int ret = snprintf(buf, sizeof(UMAX64_STR)+1, "%lld", (long long) num);
+	if (ret <= 0 || ret > (int) (sizeof(UMAX64_STR)+1)) {
+		return -1;
+	}
+	return uwsgi_buffer_append(ub, buf, ret);
+}
+
+int uwsgi_buffer_append_keyval(struct uwsgi_buffer *ub, char *key, uint16_t keylen, char *val, uint16_t vallen) {
+	if (uwsgi_buffer_u16le(ub, keylen)) return -1;
+	if (uwsgi_buffer_append(ub, key, keylen)) return -1;
+	if (uwsgi_buffer_u16le(ub, vallen)) return -1;
+	return uwsgi_buffer_append(ub, val, vallen);
+}
+
+int uwsgi_buffer_append_keyval32(struct uwsgi_buffer *ub, char *key, uint32_t keylen, char *val, uint32_t vallen) {
+        if (uwsgi_buffer_u32be(ub, keylen)) return -1;
+        if (uwsgi_buffer_append(ub, key, keylen)) return -1;
+        if (uwsgi_buffer_u32be(ub, vallen)) return -1;
+        return uwsgi_buffer_append(ub, val, vallen);
+}
+
+int uwsgi_buffer_append_keynum(struct uwsgi_buffer *ub, char *key, uint16_t keylen, int64_t num) {
+	char buf[sizeof(UMAX64_STR)+1];
+        int ret = snprintf(buf, (sizeof(UMAX64_STR)+1), "%lld", (long long) num);
+        if (ret <= 0 || ret > (int) (sizeof(UMAX64_STR)+1)) {
+                return -1;
+        }
+	if (uwsgi_buffer_u16le(ub, keylen)) return -1;
+	if (uwsgi_buffer_append(ub, key, keylen)) return -1;
+	if (uwsgi_buffer_u16le(ub, ret)) return -1;
+	return uwsgi_buffer_append(ub, buf, ret);
+}
+
+int uwsgi_buffer_append_valnum(struct uwsgi_buffer *ub, int64_t num) {
+        char buf[sizeof(UMAX64_STR)+1];
+        int ret = snprintf(buf, (sizeof(UMAX64_STR)+1), "%lld", (long long) num);
+        if (ret <= 0 || ret > (int) (sizeof(UMAX64_STR)+1)) {
+                return -1;
+        }
+        if (uwsgi_buffer_u16le(ub, ret)) return -1;
+        return uwsgi_buffer_append(ub, buf, ret);
+}
+
+
+int uwsgi_buffer_append_keyipv4(struct uwsgi_buffer *ub, char *key, uint16_t keylen, void *addr) {
+        if (uwsgi_buffer_u16le(ub, keylen)) return -1;
+        if (uwsgi_buffer_append(ub, key, keylen)) return -1;
+        if (uwsgi_buffer_u16le(ub, 15)) return -1;
+	char *ptr = ub->buf + (ub->pos - 2);
+        if (uwsgi_buffer_append_ipv4(ub, addr)) return -1;
+	// fix the size
+	*ptr = ((ub->buf+ub->pos) - (ptr+2));
+	return 0;
+}
+
+int uwsgi_buffer_append_base64(struct uwsgi_buffer *ub, char *s, size_t len) {
+	size_t b64_len = 0;
+	char *b64 = uwsgi_base64_encode(s, len, &b64_len);
+	if (!b64) return -1;
+	int ret = uwsgi_buffer_append(ub, b64, b64_len);
+	free(b64);
+	return ret;
+}
+
+
+void uwsgi_buffer_destroy(struct uwsgi_buffer *ub) {
+	if (ub->buf)
+		free(ub->buf);
+	free(ub);
+}
+
+ssize_t uwsgi_buffer_write_simple(struct wsgi_request *wsgi_req, struct uwsgi_buffer *ub) {
+	size_t remains = ub->pos;
+	while(remains) {
+		ssize_t len = write(wsgi_req->fd, ub->buf + (ub->pos - remains), remains);
+		if (len <= 0) {
+			return len;
+		}
+		remains -= len;
+	}
+
+	return ub->pos;
+}
+
+int uwsgi_buffer_send(struct uwsgi_buffer *ub, int fd) {
+	size_t remains = ub->pos;
+	char *ptr = ub->buf;
+
+	while (remains > 0) {
+		int ret = uwsgi_waitfd_write(fd, uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT]);
+		if (ret > 0) {
+			ssize_t len = write(fd, ptr, remains);
+			if (len > 0) {
+				ptr += len;
+				remains -= len;
+			}
+			else if (len == 0) {
+				return -1;
+			}
+			else {
+				uwsgi_error("uwsgi_buffer_send()");
+				return -1;
+			}
+		}
+		else if (ret == 0) {
+			uwsgi_log("timeout while sending buffer !!!\n");
+			return -1;
+		}
+		else {
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+int uwsgi_buffer_set_uh(struct uwsgi_buffer *ub, uint8_t modifier1, uint8_t modifier2) {
+	if (ub->pos < 4) return -1;
+	ub->buf[0] = modifier1;
+	ub->buf[1] = (uint8_t) ((ub->pos - 4) & 0xff);
+	ub->buf[2] = (uint8_t) (((ub->pos - 4) >> 8) & 0xff);
+	ub->buf[3] = modifier2;
+	return 0;
+}
+
+struct uwsgi_buffer *uwsgi_buffer_from_file(char *filename) {
+	struct stat st;
+        int fd = open(filename, O_RDONLY);
+        if (fd < 0) {
+		return NULL;
+        }
+
+        if (fstat(fd, &st)) {
+                close(fd);
+		return NULL;
+        }
+
+        struct uwsgi_buffer *ub = uwsgi_buffer_new(st.st_size);
+
+        ssize_t len = read(fd, ub->buf, st.st_size);
+	close(fd);
+        if (len != st.st_size) {
+		uwsgi_buffer_destroy(ub);
+		return NULL;
+        }
+
+	ub->pos = len;
+	return ub;
+}
+

core/clock.c

@@ -0,0 +1,46 @@
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+// in the future we will need to use the best clock source for each os/system
+time_t uwsgi_now() {
+	return uwsgi.clock->seconds();
+}
+
+uint64_t uwsgi_micros() {
+	return uwsgi.clock->microseconds();
+}
+
+
+void uwsgi_register_clock(struct uwsgi_clock *clock) {
+	struct uwsgi_clock *clocks = uwsgi.clocks;
+
+	clock->next = NULL;
+
+	if (!clocks) {
+		uwsgi.clocks = clock;
+		return;
+	}
+
+	while (clocks) {
+		if (!clocks->next) {
+			clocks->next = clock;
+			return;
+		}
+		clocks = clocks->next;
+	}
+}
+
+void uwsgi_set_clock(char *name) {
+	struct uwsgi_clock *clocks = uwsgi.clocks;
+	while (clocks) {
+		if (!strcmp(name, clocks->name)) {
+			uwsgi.clock = clocks;
+			return;
+		}
+		clocks = clocks->next;
+	}
+
+	uwsgi_log("unable to set \"%s\" clock\n", name);
+	exit(1);
+}

core/config.c

@@ -0,0 +1,33 @@
+#include <uwsgi.h>
+
+/*
+
+	pluggable configuration system
+
+*/
+
+extern struct uwsgi_server uwsgi;
+
+struct uwsgi_configurator *uwsgi_register_configurator(char *name, void (*func)(char *, char **)) {
+	struct uwsgi_configurator *old_uc = NULL,*uc = uwsgi.configurators;
+        while(uc) {
+                if (!strcmp(uc->name, name)) {
+                        return uc;
+                }
+                old_uc = uc;
+                uc = uc->next;
+        }
+
+        uc = uwsgi_calloc(sizeof(struct uwsgi_configurator));
+        uc->name = name;
+        uc->func = func;
+
+        if (old_uc) {
+                old_uc->next = uc;
+        }
+        else {
+                uwsgi.configurators = uc;
+        }
+
+        return uc;
+}

core/cookie.c

@@ -0,0 +1,81 @@
+#include <uwsgi.h>
+
+/*
+
+	cookie management functions (mainly used by the internal routing subsystem)
+
+*/
+
+static char *check_cookie(char *cookie, uint16_t cookie_len, char *key, uint16_t keylen, uint16_t *vallen) {
+	uint16_t orig_cookie_len = cookie_len-1;
+	// first lstrip white spaces
+	char *ptr = cookie;
+	uint16_t i;
+	for(i=0;i<cookie_len;i++) {
+		if (isspace((int)ptr[i])) {
+			cookie++;
+			cookie_len--;
+		}
+		else {
+			break;
+		}
+	}
+
+	// then rstrip (skipping the first char...)
+	for(i=orig_cookie_len;i>0;i--) {
+		if (isspace((int)ptr[i])) {
+			cookie_len--;
+		}
+		else {
+			break;
+		}
+	}
+
+	// now search for the first equal sign
+	char *equal = memchr(cookie, '=', cookie_len);
+	if (!equal) return NULL;
+	
+	if (uwsgi_strncmp(key, keylen, cookie, equal-cookie)) {
+		return NULL;
+	}
+
+	cookie_len -= (equal-cookie)+1;
+	if (cookie_len == 0) return NULL;
+
+	*vallen = cookie_len;
+	return equal+1;
+}
+
+char *uwsgi_get_cookie(struct wsgi_request *wsgi_req, char *key, uint16_t keylen, uint16_t *vallen) {
+	uint16_t i;
+
+	char *cookie = wsgi_req->cookie;
+	uint16_t cookie_len = 0;
+	char *ptr = wsgi_req->cookie;
+	//start splitting by ;
+	for(i=0;i<wsgi_req->cookie_len;i++) {
+		if (!cookie) {
+			cookie = ptr + i;
+		}
+		if (ptr[i] == ';') {
+			char *value = check_cookie(cookie, cookie_len, key, keylen, vallen);
+			if (value) {
+				return value;
+			}
+			cookie_len = 0;
+			cookie = NULL;
+		}
+		else {
+			cookie_len++;
+		}
+	}
+
+	if (cookie_len > 0) {
+		char *value = check_cookie(cookie, cookie_len, key, keylen, vallen);
+		if (value) {
+                	return value;
+                }
+	}
+
+	return NULL;
+}

core/daemons.c

@@ -0,0 +1,314 @@
+#include "../uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+/*
+
+	External uwsgi daemons
+
+	There are 3 kind of daemons (read: external applications) that can be managed
+	by uWSGI.
+
+	1) dumb daemons (attached with --attach-daemon)
+		they must not daemonize() and when they exit() the master is notified (via waitpid)
+		and the process is respawned
+	2) smart daemons with daemonization
+		you specify a pidfile and a command
+		- on startup - if the pidfile does not exists or contains a not-available pid (checked with kill(pid, 0))
+		the daemon is respawned
+		- on master ckeck - if the pidfile does not exist or if it point to a non-existent pid
+                the daemon is respawned
+	3) smart daemons without daemonization
+		same as 2, but the daemonization and pidfile creation is managed by uWSGI
+
+	status:
+
+	0 -> never started
+	1 -> just started
+	2 -> started and monitored (only in pidfile based)
+
+*/
+
+void uwsgi_daemons_smart_check() {
+	static time_t last_run = 0;
+
+	time_t now = uwsgi_now();
+
+	if (now - last_run <= 0) {
+		return;
+	}
+
+	last_run = now;
+
+	struct uwsgi_daemon *ud = uwsgi.daemons;
+	while (ud) {
+		if (ud->pidfile) {
+			int checked_pid = uwsgi_check_pidfile(ud->pidfile);
+			if (checked_pid <= 0) {
+				// monitored instance
+				if (ud->status == 2) {
+					uwsgi_spawn_daemon(ud);
+				}
+				else {
+					ud->pidfile_checks++;
+					if (ud->pidfile_checks >= (unsigned int) ud->freq) {
+						uwsgi_log("[uwsgi-daemons] found changed pidfile for \"%s\" (old_pid: %d new_pid: %d)\n", ud->command, (int) ud->pid, (int) checked_pid);
+						uwsgi_spawn_daemon(ud);
+					}
+				}
+			}
+			else if (checked_pid != ud->pid) {
+				uwsgi_log("[uwsgi-daemons] found changed pid for \"%s\" (old_pid: %d new_pid: %d)\n", ud->command, (int) ud->pid, (int) checked_pid);
+				ud->pid = checked_pid;
+			}
+			// all ok, pidfile and process found
+			else {
+				ud->status = 2;
+			}
+		}
+		ud = ud->next;
+	}
+}
+
+// this function is called when a dumb daemon dies and we do not wat to respawn it
+int uwsgi_daemon_check_pid_death(pid_t diedpid) {
+	struct uwsgi_daemon *ud = uwsgi.daemons;
+	while (ud) {
+		if (ud->pid == diedpid && !ud->pidfile) {
+			uwsgi_log("daemon \"%s\" (pid: %d) annihilated\n", ud->command, (int) diedpid);
+			return -1;
+		}
+		ud = ud->next;
+	}
+	return 0;
+}
+
+// this function is called when a dumb daemon dies and we want to respawn it
+int uwsgi_daemon_check_pid_reload(pid_t diedpid) {
+	struct uwsgi_daemon *ud = uwsgi.daemons;
+	while (ud) {
+		if (ud->pid == diedpid && !ud->pidfile) {
+			uwsgi_spawn_daemon(ud);
+			return 1;
+		}
+		ud = ud->next;
+	}
+	return 0;
+}
+
+
+
+int uwsgi_check_pidfile(char *filename) {
+	struct stat st;
+	pid_t ret = -1;
+	int fd = open(filename, O_RDONLY);
+	if (fd < 0) {
+		uwsgi_error_open(filename);
+		goto end;
+	}
+	if (fstat(fd, &st)) {
+		uwsgi_error("fstat()");
+		goto end2;
+	}
+	char *pidstr = uwsgi_calloc(st.st_size + 1);
+	if (read(fd, pidstr, st.st_size) != st.st_size) {
+		uwsgi_error("read()");
+		goto end3;
+	}
+	pid_t pid = atoi(pidstr);
+	if (pid <= 0)
+		goto end3;
+	if (!kill(pid, 0)) {
+		ret = pid;
+	}
+end3:
+	free(pidstr);
+end2:
+	close(fd);
+end:
+	return ret;
+}
+
+void uwsgi_daemons_spawn_all() {
+	struct uwsgi_daemon *ud = uwsgi.daemons;
+	while (ud) {
+		if (!ud->registered) {
+			if (ud->pidfile) {
+				int checked_pid = uwsgi_check_pidfile(ud->pidfile);
+				if (checked_pid <= 0) {
+					uwsgi_spawn_daemon(ud);
+				}
+				else {
+					ud->pid = checked_pid;
+					uwsgi_log("[uwsgi-daemons] found valid/active pidfile for \"%s\" (pid: %d)\n", ud->command, (int) ud->pid);
+				}
+			}
+			else {
+				uwsgi_spawn_daemon(ud);
+			}
+			ud->registered = 1;
+		}
+		ud = ud->next;
+	}
+}
+
+
+void uwsgi_detach_daemons() {
+	struct uwsgi_daemon *ud = uwsgi.daemons;
+	while (ud) {
+		if (ud->pid > 0 && !ud->pidfile)
+			kill(-ud->pid, SIGKILL);
+		ud = ud->next;
+	}
+}
+
+
+void uwsgi_spawn_daemon(struct uwsgi_daemon *ud) {
+
+	int devnull = -1;
+	int throttle = 0;
+
+	if (uwsgi.current_time - ud->last_spawn <= 3) {
+		throttle = ud->respawns - (uwsgi.current_time - ud->last_spawn);
+	}
+
+	pid_t pid = uwsgi_fork("uWSGI external daemon");
+	if (pid < 0) {
+		uwsgi_error("fork()");
+		return;
+	}
+
+	if (pid > 0) {
+		ud->pid = pid;
+		ud->status = 1;
+		ud->pidfile_checks = 0;
+		if (ud->respawns == 0) {
+			ud->born = uwsgi_now();
+		}
+
+		ud->respawns++;
+		ud->last_spawn = uwsgi_now();
+
+	}
+	else {
+		// close uwsgi sockets
+		uwsgi_close_all_sockets();
+		uwsgi_close_all_fds();
+
+		if (ud->daemonize) {
+			/* refork... */
+			pid = fork();
+			if (pid < 0) {
+				uwsgi_error("fork()");
+				exit(1);
+			}
+			if (pid != 0) {
+				_exit(0);
+			}
+			uwsgi_write_pidfile(ud->pidfile);
+		}
+
+		if (!uwsgi.daemons_honour_stdin) {
+			// /dev/null will became stdin
+			devnull = open("/dev/null", O_RDONLY);
+			if (devnull < 0) {
+				uwsgi_error("/dev/null open()");
+				exit(1);
+			}
+			if (devnull != 0) {
+				if (dup2(devnull, 0) < 0) {
+					uwsgi_error("dup2()");
+					exit(1);
+				}
+				close(devnull);
+			}
+		}
+
+		if (setsid() < 0) {
+			uwsgi_error("setsid()");
+			exit(1);
+		}
+
+		if (!ud->pidfile) {
+#ifdef __linux__
+			if (prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0)) {
+				uwsgi_error("prctl()");
+			}
+#endif
+		}
+
+
+		if (throttle) {
+			uwsgi_log("[uwsgi-daemons] throttling \"%s\" for %d seconds\n", ud->command, throttle);
+			sleep(throttle);
+		}
+
+		uwsgi_log("[uwsgi-daemons] %sspawning \"%s\"\n", ud->respawns > 0 ? "re" : "", ud->command);
+		uwsgi_exec_command_with_args(ud->command);
+		uwsgi_log("[uwsgi-daemons] unable to spawn \"%s\"\n", ud->command);
+
+		// never here;
+		exit(1);
+	}
+
+	return;
+}
+
+
+void uwsgi_opt_add_daemon(char *opt, char *value, void *none) {
+
+	struct uwsgi_daemon *uwsgi_ud = uwsgi.daemons, *old_ud;
+	char *pidfile = NULL;
+	int daemonize = 0;
+	int freq = 10;
+
+	char *command = uwsgi_str(value);
+
+	if (!strcmp(opt, "smart-attach-daemon") || !strcmp(opt, "smart-attach-daemon2")) {
+		char *space = strchr(command, ' ');
+		if (!space) {
+			uwsgi_log("invalid smart-attach-daemon syntax: %s\n", command);
+			exit(1);
+		}
+		*space = 0;
+		pidfile = command;
+		// check for freq
+		char *comma = strchr(pidfile, ',');
+		if (comma) {
+			*comma = 0;
+			freq = atoi(comma + 1);
+		}
+		command = space + 1;
+		if (!strcmp(opt, "smart-attach-daemon2")) {
+			daemonize = 1;
+		}
+	}
+
+	if (!uwsgi_ud) {
+		uwsgi.daemons = uwsgi_malloc(sizeof(struct uwsgi_daemon));
+		uwsgi_ud = uwsgi.daemons;
+	}
+	else {
+		while (uwsgi_ud) {
+			old_ud = uwsgi_ud;
+			uwsgi_ud = uwsgi_ud->next;
+		}
+
+		uwsgi_ud = uwsgi_malloc(sizeof(struct uwsgi_daemon));
+		old_ud->next = uwsgi_ud;
+	}
+
+	uwsgi_ud->command = command;
+	uwsgi_ud->pid = 0;
+	uwsgi_ud->status = 0;
+	uwsgi_ud->freq = freq;
+	uwsgi_ud->registered = 0;
+	uwsgi_ud->next = NULL;
+	uwsgi_ud->respawns = 0;
+	uwsgi_ud->last_spawn = 0;
+	uwsgi_ud->daemonize = daemonize;
+	uwsgi_ud->pidfile = pidfile;
+
+	uwsgi.daemons_cnt++;
+
+}

core/errors.c

@@ -0,0 +1,45 @@
+#include <uwsgi.h>
+
+// generate internal server error message
+void uwsgi_500(struct wsgi_request *wsgi_req) {
+	if (uwsgi_response_prepare_headers(wsgi_req, "500 Internal Server Error", 25)) return;
+	if (uwsgi_response_add_connection_close(wsgi_req)) return;
+	uwsgi_response_write_body_do(wsgi_req, "Internal Server Error", 21);
+}
+
+
+void uwsgi_404(struct wsgi_request *wsgi_req) {
+	if (uwsgi_response_prepare_headers(wsgi_req, "404 Not Found", 13)) return;
+	if (uwsgi_response_add_connection_close(wsgi_req)) return;
+	if (uwsgi_response_add_header(wsgi_req, "Content-Type", 12, "text/plain", 10)) return;
+	uwsgi_response_write_body_do(wsgi_req, "Not Found", 9);
+}
+
+void uwsgi_403(struct wsgi_request *wsgi_req) {
+	if (uwsgi_response_prepare_headers(wsgi_req, "403 Forbidden", 13)) return;
+	if (uwsgi_response_add_connection_close(wsgi_req)) return;
+	if (uwsgi_response_add_content_type(wsgi_req, "text/plain", 10)) return;
+	uwsgi_response_write_body_do(wsgi_req, "Forbidden", 9);
+}
+
+void uwsgi_redirect_to_slash(struct wsgi_request *wsgi_req) {
+
+	char *redirect = NULL;
+	size_t redirect_len = 0;
+
+        if (uwsgi_response_prepare_headers(wsgi_req, "301 Moved Permanently", 21)) return;
+	if (uwsgi_response_add_connection_close(wsgi_req)) return;
+
+	if (wsgi_req->query_string_len == 0) {
+		redirect = uwsgi_concat2n(wsgi_req->path_info, wsgi_req->path_info_len, "/", 1);
+		redirect_len = wsgi_req->path_info_len + 1;
+	}
+        else {
+		redirect = uwsgi_concat3n(wsgi_req->path_info, wsgi_req->path_info_len, "/?", 2, wsgi_req->query_string, wsgi_req->query_string_len);
+		redirect_len = wsgi_req->path_info_len + 2 + wsgi_req->query_string_len;
+        }
+        uwsgi_response_add_header(wsgi_req, "Location", 8, redirect, redirect_len);
+	free(redirect);	
+        return;
+}
+

core/exceptions.c

@@ -0,0 +1,499 @@
+#include <uwsgi.h>
+
+extern struct uwsgi_server uwsgi;
+
+/*
+
+	Exceptions management
+
+	generally exceptions are printed in the logs, but if you enable
+	an exception manager they will be stored in a (relatively big) uwsgi packet
+	with the following structure.
+
+	"vars" -> keyval of request vars
+	"backtrace" -> list of backtrace lines. Each line is a list of 5 elements filename,line,function,text,custom
+	"unix" -> seconds since the epoch
+	"class" -> the exception class
+	"msg" -> a text message mapped to the extension
+	"repr" -> a text message mapped to the extension in language-specific gergo
+	"wid" -> worker id
+	"core" -> the core generating the exception
+	"pid" -> pid of the worker
+	"node" -> hostname
+
+	Other vars can be added, but you cannot be sure they will be used by exceptions handler.
+
+	The exception-uwsgi packet is passed "as is" to the exception handler
+
+	Exceptions hooks:
+	
+		a request plugin can export that hooks:
+	
+		struct uwsgi_buffer *backtrace(struct wsgi_request *);
+		struct uwsgi_buffer *exception_class(struct wsgi_request *);
+		struct uwsgi_buffer *exception_msg(struct wsgi_request *);
+		struct uwsgi_buffer *exception_repr(struct wsgi_request *);
+		void exception_log(struct wsgi_request *);
+
+		Remember to reset the exception status (if possibile) after each call
+
+	Exceptions catcher:
+
+		This is a special development-mode in which exceptions are printed
+		to the HTTP client.
+
+*/
+
+struct uwsgi_buffer *uwsgi_exception_handler_object(struct wsgi_request *wsgi_req) {
+	struct uwsgi_buffer *ub = uwsgi_buffer_new(4096);
+	if (uwsgi_buffer_append_keyval(ub, "vars", 4, wsgi_req->buffer,wsgi_req->uh->pktsize)) goto error;
+	if (uwsgi.p[wsgi_req->uh->modifier1]->backtrace) {
+                struct uwsgi_buffer *bt = uwsgi.p[wsgi_req->uh->modifier1]->backtrace(wsgi_req);
+		if (bt) {
+			if (uwsgi_buffer_append_keyval(ub, "backtrace", 9, bt->buf, bt->pos)) {
+				uwsgi_buffer_destroy(bt);
+				goto error;
+			} 
+			uwsgi_buffer_destroy(bt);
+		}
+	}
+	
+	if (uwsgi.p[wsgi_req->uh->modifier1]->exception_class) {
+		struct uwsgi_buffer *ec = uwsgi.p[wsgi_req->uh->modifier1]->exception_class(wsgi_req);
+		if (ec) {
+			if (uwsgi_buffer_append_keyval(ub, "class", 5, ec->buf, ec->pos)) {
+				uwsgi_buffer_destroy(ec);
+				goto error;
+			}
+			uwsgi_buffer_destroy(ec);
+		}
+	}
+
+	if (uwsgi.p[wsgi_req->uh->modifier1]->exception_msg) {
+                struct uwsgi_buffer *em = uwsgi.p[wsgi_req->uh->modifier1]->exception_msg(wsgi_req);
+                if (em) {
+                        if (uwsgi_buffer_append_keyval(ub, "msg", 3, em->buf, em->pos)) {
+                                uwsgi_buffer_destroy(em);
+                                goto error;
+                        }
+                        uwsgi_buffer_destroy(em);
+                }
+        }
+
+	if (uwsgi.p[wsgi_req->uh->modifier1]->exception_repr) {
+                struct uwsgi_buffer *er = uwsgi.p[wsgi_req->uh->modifier1]->exception_repr(wsgi_req);
+                if (er) {
+                        if (uwsgi_buffer_append_keyval(ub, "repr", 4, er->buf, er->pos)) {
+                                uwsgi_buffer_destroy(er);
+                                goto error;
+                        }
+                        uwsgi_buffer_destroy(er);
+                }
+        }
+
+	if (uwsgi_buffer_append_keynum(ub, "unix", 4, uwsgi_now())) goto error;
+	if (uwsgi_buffer_append_keynum(ub, "wid", 3, uwsgi.mywid)) goto error;
+	if (uwsgi_buffer_append_keynum(ub, "pid", 3, uwsgi.mypid)) goto error;
+	if (uwsgi_buffer_append_keynum(ub, "core", 4, wsgi_req->async_id)) goto error;
+	if (uwsgi_buffer_append_keyval(ub, "node", 4, uwsgi.hostname, uwsgi.hostname_len)) goto error;
+
+	return ub;
+	
+error:
+	uwsgi_buffer_destroy(ub);
+	return NULL;
+}
+
+static void append_vars_to_ubuf(char *key, uint16_t keylen, char *val, uint16_t vallen, void *data) {
+	struct uwsgi_buffer *ub = (struct uwsgi_buffer *) data;
+
+	if (uwsgi_buffer_append(ub, key, keylen)) return;
+	if (uwsgi_buffer_append(ub, " = ", 3)) return;
+	if (uwsgi_buffer_append(ub, val, vallen)) return;
+	if (uwsgi_buffer_append(ub, "\n", 1)) return;
+}
+
+static void append_backtrace_to_ubuf(uint16_t pos, char *value, uint16_t len, void *data) {
+        struct uwsgi_buffer *ub = (struct uwsgi_buffer *) data;
+
+	uint16_t item = 0;
+	if (pos > 0) {
+		item = pos % 5;
+	}
+
+	switch(item) {
+		// filename
+		case 0:
+			if (uwsgi_buffer_append(ub, "filename: \"", 11)) return;
+			if (uwsgi_buffer_append(ub, value, len)) return;
+			if (uwsgi_buffer_append(ub, "\" ", 2)) return;
+			break;
+		// lineno
+		case 1:
+			if (uwsgi_buffer_append(ub, "line: ", 6)) return;
+			if (uwsgi_buffer_append(ub, value, len)) return;
+			if (uwsgi_buffer_append(ub, " ", 1)) return;
+			break;
+		// function
+		case 2:
+			if (uwsgi_buffer_append(ub, "function: \"", 11)) return;
+			if (uwsgi_buffer_append(ub, value, len)) return;
+			if (uwsgi_buffer_append(ub, "\" ", 2)) return;
+			break;
+		// text
+		case 3:
+			if (len > 0) {
+				if (uwsgi_buffer_append(ub, "text/code: \"", 12)) return;
+				if (uwsgi_buffer_append(ub, value, len)) return;
+				if (uwsgi_buffer_append(ub, "\" ", 2)) return;
+			}
+			break;
+		// custom
+		case 4:
+			if (len > 0) {
+				if (uwsgi_buffer_append(ub, "custom: \"", 9)) return;
+                        	if (uwsgi_buffer_append(ub, value, len)) return;
+                        	if (uwsgi_buffer_append(ub, "\" ", 2)) return;
+			}
+			if (uwsgi_buffer_append(ub, "\n", 1)) return;
+			break;
+		default:
+			break;
+	}
+
+}
+
+
+int uwsgi_exceptions_catch(struct wsgi_request *wsgi_req) {
+
+	if (uwsgi_response_prepare_headers(wsgi_req, "500 Internal Server Error", 25)) {
+		return -1;
+	}
+
+	if (uwsgi_response_add_content_type(wsgi_req, "text/plain", 10)) {
+		return -1;
+	}
+
+	struct uwsgi_buffer *ub = uwsgi_buffer_new(4096);
+	if (uwsgi_buffer_append(ub, "uWSGI exceptions catcher for \"", 30)) goto error;
+	if (uwsgi_buffer_append(ub, wsgi_req->method, wsgi_req->method_len)) goto error;
+	if (uwsgi_buffer_append(ub, " ", 1)) goto error;
+	if (uwsgi_buffer_append(ub, wsgi_req->uri, wsgi_req->uri_len)) goto error;
+	if (uwsgi_buffer_append(ub, "\" (request plugin: \"", 20)) goto error;
+	if (uwsgi_buffer_append(ub, (char *) uwsgi.p[wsgi_req->uh->modifier1]->name, strlen(uwsgi.p[wsgi_req->uh->modifier1]->name))) goto error;
+	if (uwsgi_buffer_append(ub, "\", modifier1: ", 14 )) goto error;
+	if (uwsgi_buffer_num64(ub, wsgi_req->uh->modifier1)) goto error;
+	if (uwsgi_buffer_append(ub, ")\n\n", 3)) goto error;
+
+	if (uwsgi_buffer_append(ub, "Exception: ", 11)) goto error;
+                
+        if (uwsgi.p[wsgi_req->uh->modifier1]->exception_repr) {
+                struct uwsgi_buffer *ub_exc_repr = uwsgi.p[wsgi_req->uh->modifier1]->exception_repr(wsgi_req);
+                if (ub_exc_repr) {
+                        if (uwsgi_buffer_append(ub, ub_exc_repr->buf, ub_exc_repr->pos)) {
+                                uwsgi_buffer_destroy(ub_exc_repr);
+                                goto error;
+                        }
+                        uwsgi_buffer_destroy(ub_exc_repr);
+                }
+                else {
+                        goto notavail3;
+                }
+        }
+        else {
+notavail3:
+                if (uwsgi_buffer_append(ub, "-Not available-", 15)) goto error;
+        }
+
+        if (uwsgi_buffer_append(ub, "\n\n", 2)) goto error;
+
+	if (uwsgi_buffer_append(ub, "Exception class: ", 17)) goto error;
+
+	if (uwsgi.p[wsgi_req->uh->modifier1]->exception_class) {
+		struct uwsgi_buffer *ub_exc_class = uwsgi.p[wsgi_req->uh->modifier1]->exception_class(wsgi_req);
+		if (ub_exc_class) {
+			if (uwsgi_buffer_append(ub, ub_exc_class->buf, ub_exc_class->pos)) {
+				uwsgi_buffer_destroy(ub_exc_class);
+				goto error;
+			}
+			uwsgi_buffer_destroy(ub_exc_class);
+		}
+		else {
+			goto notavail;
+		}
+	}
+	else {
+notavail:
+		if (uwsgi_buffer_append(ub, "-Not available-", 15)) goto error;
+	}
+
+	if (uwsgi_buffer_append(ub, "\n\n", 2)) goto error;
+
+	if (uwsgi_buffer_append(ub, "Exception message: ", 19)) goto error;
+
+        if (uwsgi.p[wsgi_req->uh->modifier1]->exception_msg) {
+                struct uwsgi_buffer *ub_exc_msg = uwsgi.p[wsgi_req->uh->modifier1]->exception_msg(wsgi_req);
+                if (ub_exc_msg) {
+                        if (uwsgi_buffer_append(ub, ub_exc_msg->buf, ub_exc_msg->pos)) {
+                                uwsgi_buffer_destroy(ub_exc_msg);
+                                goto error;
+                        }
+                        uwsgi_buffer_destroy(ub_exc_msg);
+                }
+                else {
+                        goto notavail2;
+                }
+        }
+        else {
+notavail2:
+                if (uwsgi_buffer_append(ub, "-Not available-", 15)) goto error;
+        }
+
+	if (uwsgi_buffer_append(ub, "\n\n", 2)) goto error;
+
+	if (uwsgi_buffer_append(ub, "Backtrace:\n", 11)) goto error;
+
+        if (uwsgi.p[wsgi_req->uh->modifier1]->backtrace) {
+                struct uwsgi_buffer *ub_exc_bt = uwsgi.p[wsgi_req->uh->modifier1]->backtrace(wsgi_req);
+                if (ub_exc_bt) {
+			struct uwsgi_buffer *parsed_bt = uwsgi_buffer_new(4096);
+			if (uwsgi_hooked_parse_array(ub_exc_bt->buf, ub_exc_bt->pos, append_backtrace_to_ubuf, parsed_bt)) {
+				uwsgi_buffer_destroy(ub_exc_bt);
+				uwsgi_buffer_destroy(parsed_bt);
+                                goto error;
+			}
+			uwsgi_buffer_destroy(ub_exc_bt);
+                        if (uwsgi_buffer_append(ub, parsed_bt->buf, parsed_bt->pos)) {
+                                uwsgi_buffer_destroy(parsed_bt);
+                                goto error;
+                        }
+                        uwsgi_buffer_destroy(parsed_bt);
+                }
+                else {
+                        goto notavail4;
+                }
+        }
+        else {
+notavail4:
+                if (uwsgi_buffer_append(ub, "-Not available-", 15)) goto error;
+        }
+
+        if (uwsgi_buffer_append(ub, "\n\n", 2)) goto error;
+
+	if (uwsgi_hooked_parse(wsgi_req->buffer, wsgi_req->uh->pktsize, append_vars_to_ubuf, ub)) {
+		goto error;
+	}
+
+	if (uwsgi_response_write_body_do(wsgi_req, ub->buf, ub->pos)) {
+		goto error;
+	}
+
+	uwsgi_buffer_destroy(ub);
+	return 0;
+
+error:
+	uwsgi_buffer_destroy(ub);
+	return -1;
+
+}
+
+static void uwsgi_exception_run_handlers(struct uwsgi_buffer *ub) {
+	struct uwsgi_string_list *usl = uwsgi.exception_handlers_instance;
+	struct iovec iov[2];
+        iov[1].iov_base = ub->buf;
+        iov[1].iov_len = ub->pos;
+	while(usl) {
+		struct uwsgi_exception_handler_instance *uehi = (struct uwsgi_exception_handler_instance *) usl->custom_ptr;
+        	iov[0].iov_base = &uehi;
+        	iov[0].iov_len = sizeof(long);
+        	// now send the message to the exception handler thread
+        	if (writev(uwsgi.exception_handler_thread->pipe[0], iov, 2) != (ssize_t) (ub->pos+sizeof(long))) {
+                	uwsgi_error("[uwsgi-exception-handler-error] uwsgi_exception_run_handlers()/writev()");
+        	}
+		usl = usl->next;
+	}
+}
+
+void uwsgi_manage_exception(struct wsgi_request *wsgi_req,int catch) {
+
+	int do_exit = uwsgi.reload_on_exception;
+
+	if (!wsgi_req) goto log2;
+
+	if (do_exit) goto check_catch;
+
+	if (wsgi_req && uwsgi.exception_handlers_instance) {
+		struct uwsgi_buffer *ehi = uwsgi_exception_handler_object(wsgi_req);
+		if (ehi) {
+			uwsgi_exception_run_handlers(ehi);
+			uwsgi_buffer_destroy(ehi);
+		}
+	}
+
+	uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id].exceptions++;
+	uwsgi_apps[wsgi_req->app_id].exceptions++;
+
+	if (uwsgi.reload_on_exception_type && uwsgi.p[wsgi_req->uh->modifier1]->exception_class) {
+		struct uwsgi_buffer *ub = uwsgi.p[wsgi_req->uh->modifier1]->exception_msg(wsgi_req);
+		if (ub) {
+			struct uwsgi_string_list *usl = uwsgi.reload_on_exception_type;
+			while (usl) {
+				if (!uwsgi_strncmp(usl->value, usl->len, ub->buf, ub->len)) {
+					do_exit = 1;
+					uwsgi_buffer_destroy(ub);
+					goto check_catch;
+				}
+				usl = usl->next;
+			}
+			uwsgi_buffer_destroy(ub);
+		}
+	}
+
+	if (uwsgi.reload_on_exception_value && uwsgi.p[wsgi_req->uh->modifier1]->exception_msg) {
+                struct uwsgi_buffer *ub = uwsgi.p[wsgi_req->uh->modifier1]->exception_msg(wsgi_req);
+		if (ub) {
+			struct uwsgi_string_list *usl = uwsgi.reload_on_exception_value;
+                        while (usl) {
+                                if (!uwsgi_strncmp(usl->value, usl->len, ub->buf, ub->len)) {
+                                        do_exit = 1;
+                                        uwsgi_buffer_destroy(ub);
+                                        goto check_catch;
+                                }
+                                usl = usl->next;
+                        }
+			uwsgi_buffer_destroy(ub);
+		}
+        }
+
+        if (uwsgi.reload_on_exception_repr && uwsgi.p[wsgi_req->uh->modifier1]->exception_repr) {
+                struct uwsgi_buffer *ub = uwsgi.p[wsgi_req->uh->modifier1]->exception_msg(wsgi_req);
+		if (ub) {
+			struct uwsgi_string_list *usl = uwsgi.reload_on_exception_repr;
+                        while (usl) {
+                                if (!uwsgi_strncmp(usl->value, usl->len, ub->buf, ub->len)) {
+                                        do_exit = 1;
+                                        uwsgi_buffer_destroy(ub);
+                                        goto check_catch;
+                                }
+                                usl = usl->next;
+                        }
+			uwsgi_buffer_destroy(ub);
+		}
+        }
+
+check_catch:
+	if (catch && wsgi_req) {
+		if (uwsgi_exceptions_catch(wsgi_req)) {
+			// for now, just goto, new features could be added
+			goto log;		
+		}
+	}
+
+log:
+	if (uwsgi.p[wsgi_req->uh->modifier1]->exception_log) {
+		uwsgi.p[wsgi_req->uh->modifier1]->exception_log(wsgi_req);
+	}
+	
+log2:
+	if (do_exit) {
+		exit(UWSGI_EXCEPTION_CODE);		
+	}
+	
+}
+
+struct uwsgi_exception_handler *uwsgi_register_exception_handler(char *name, int (*func)(struct uwsgi_exception_handler_instance *, char *, size_t)) {
+	struct uwsgi_exception_handler *old_ueh = NULL, *ueh = uwsgi.exception_handlers;
+	while(ueh) {
+		if (!strcmp(name, ueh->name)) {
+			return NULL;
+		}
+		old_ueh = ueh;
+		ueh = ueh->next;
+	}
+
+	ueh = uwsgi_calloc(sizeof(struct uwsgi_exception_handler));
+	ueh->name = name;
+	ueh->func = func;
+
+	if (old_ueh) {
+		old_ueh->next = ueh;
+	}
+	else {
+		uwsgi.exception_handlers = ueh;
+	}
+
+	return ueh;
+}
+
+struct uwsgi_exception_handler *uwsgi_exception_handler_by_name(char *name) {
+	struct uwsgi_exception_handler *ueh = uwsgi.exception_handlers;
+	while(ueh) {
+		if (!strcmp(name, ueh->name)) {
+			return ueh;
+		}
+		ueh = ueh->next;
+	}
+	return NULL;
+}
+
+static void uwsgi_exception_handler_thread_loop(struct uwsgi_thread *ut) {
+        char *buf = uwsgi_malloc(uwsgi.exception_handler_msg_size + sizeof(long));
+        for (;;) {
+                int interesting_fd = -1;
+                int ret = event_queue_wait(ut->queue, -1, &interesting_fd);
+                if (ret > 0) {
+                        ssize_t len = read(ut->pipe[1], buf, uwsgi.alarm_msg_size + sizeof(long));
+                        if (len > (ssize_t)(sizeof(long) + 1)) {
+                                size_t msg_size = len - sizeof(long);
+                                char *msg = buf + sizeof(long);
+                                long ptr = 0;
+                                memcpy(&ptr, buf, sizeof(long));
+                                struct uwsgi_exception_handler_instance *uehi = (struct uwsgi_exception_handler_instance *) ptr;
+                                if (!uehi)
+					break;
+				if (uehi->handler->func(uehi, msg, msg_size)) {
+                        		uwsgi_log("[uwsgi-exception] error running the handler \"%s\" args: \"%s\"\n", uehi->handler->name, uehi->arg ? uehi->arg : "");
+                		}
+                        }
+                }
+        }
+	free(buf);
+}
+
+void uwsgi_exception_setup_handlers() {
+
+	struct uwsgi_string_list *usl = uwsgi.exception_handlers_instance;
+	while(usl) {
+		char *handler = uwsgi_str(usl->value);
+		char *colon = strchr(handler, ':');
+		if (colon) {
+			*colon = 0;
+		}
+		struct uwsgi_exception_handler *ueh = uwsgi_exception_handler_by_name(handler);
+		if (!ueh) {
+			uwsgi_log("unable to find exception handler: %s\n", handler);
+			free(handler);
+			exit(1);
+		}
+		free(handler);
+
+		struct uwsgi_exception_handler_instance *uehi = uwsgi_calloc(sizeof(struct uwsgi_exception_handler_instance));
+		uehi->handler = ueh;
+		if (colon) {
+			uehi->arg = colon+1;
+		}
+		usl->custom_ptr = uehi;
+		usl = usl->next;
+	}
+}
+
+void uwsgi_exceptions_handler_thread_start() {
+
+	// start the exception_handler_thread
+        uwsgi.exception_handler_thread = uwsgi_thread_new(uwsgi_exception_handler_thread_loop);
+        if (!uwsgi.exception_handler_thread) {
+                uwsgi_log("unable to spawn exception handler thread\n");
+                exit(1);
+        }
+
+}

core/gateway.c

@@ -0,0 +1,166 @@
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+struct uwsgi_gateway *register_gateway(char *name, void (*loop) (int, void *), void *data) {
+
+	struct uwsgi_gateway *ug;
+	int num = 1, i;
+
+	if (ushared->gateways_cnt >= MAX_GATEWAYS) {
+		uwsgi_log("you can register max %d gateways\n", MAX_GATEWAYS);
+		return NULL;
+	}
+
+	for (i = 0; i < ushared->gateways_cnt; i++) {
+		if (!strcmp(name, ushared->gateways[i].name)) {
+			num++;
+		}
+	}
+
+	char *fullname = uwsgi_concat3(name, " ", uwsgi_num2str(num));
+
+	ug = &ushared->gateways[ushared->gateways_cnt];
+	ug->pid = 0;
+	ug->name = name;
+	ug->loop = loop;
+	ug->num = num;
+	ug->fullname = fullname;
+	ug->data = data;
+
+	if (socketpair(AF_UNIX, SOCK_DGRAM, 0, ug->internal_subscription_pipe)) {
+		uwsgi_error("socketpair()");
+	}
+
+	if (!uwsgi.master_process)
+		gateway_respawn(ushared->gateways_cnt);
+
+	ushared->gateways_cnt++;
+
+
+	return ug;
+}
+
+static void gateway_brutal_end() {
+        _exit(UWSGI_END_CODE);
+}
+
+void gateway_respawn(int id) {
+
+	pid_t gw_pid;
+	struct uwsgi_gateway *ug = &ushared->gateways[id];
+
+	if (uwsgi.master_process)
+		uwsgi.shared->gateways_harakiri[id] = 0;
+
+	gw_pid = uwsgi_fork(ug->fullname);
+	if (gw_pid < 0) {
+		uwsgi_error("fork()");
+		return;
+	}
+
+	if (gw_pid == 0) {
+		uwsgi_fixup_fds(0, 0, ug);
+		if (uwsgi.master_as_root)
+			uwsgi_as_root();
+#ifdef __linux__
+		if (prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0)) {
+			uwsgi_error("prctl()");
+		}
+#endif
+		uwsgi.mypid = getpid();
+		atexit(gateway_brutal_end);
+		signal(SIGALRM, SIG_IGN);
+		signal(SIGHUP, SIG_IGN);
+		signal(SIGINT, end_me);
+		signal(SIGTERM, end_me);
+		signal(SIGUSR1, SIG_IGN);
+		signal(SIGUSR2, SIG_IGN);
+		signal(SIGPIPE, SIG_IGN);
+		signal(SIGSTOP, SIG_IGN);
+		signal(SIGTSTP, SIG_IGN);
+
+		ug->loop(id, ug->data);
+		// never here !!! (i hope)
+		exit(1);
+	}
+
+	ug->pid = gw_pid;
+	ug->respawns++;
+	if (ug->respawns == 1) {
+		uwsgi_log("spawned %s %d (pid: %d)\n", ug->name, ug->num, (int) gw_pid);
+	}
+	else {
+		uwsgi_log("respawned %s %d (pid: %d)\n", ug->name, ug->num, (int) gw_pid);
+	}
+
+}
+
+struct uwsgi_gateway_socket *uwsgi_new_gateway_socket(char *name, char *owner) {
+
+	struct uwsgi_gateway_socket *uwsgi_sock = uwsgi.gateway_sockets, *old_uwsgi_sock;
+
+	if (!uwsgi_sock) {
+		uwsgi.gateway_sockets = uwsgi_malloc(sizeof(struct uwsgi_gateway_socket));
+		uwsgi_sock = uwsgi.gateway_sockets;
+	}
+	else {
+		while (uwsgi_sock) {
+			old_uwsgi_sock = uwsgi_sock;
+			uwsgi_sock = uwsgi_sock->next;
+		}
+
+		uwsgi_sock = uwsgi_malloc(sizeof(struct uwsgi_gateway_socket));
+		old_uwsgi_sock->next = uwsgi_sock;
+	}
+
+	memset(uwsgi_sock, 0, sizeof(struct uwsgi_gateway_socket));
+	uwsgi_sock->fd = -1;
+	uwsgi_sock->shared = 0;
+	uwsgi_sock->name = name;
+	uwsgi_sock->name_len = strlen(name);
+	uwsgi_sock->owner = owner;
+
+	return uwsgi_sock;
+}
+
+struct uwsgi_gateway_socket *uwsgi_new_gateway_socket_from_fd(int fd, char *owner) {
+
+	struct uwsgi_gateway_socket *uwsgi_sock = uwsgi.gateway_sockets, *old_uwsgi_sock;
+
+	if (!uwsgi_sock) {
+		uwsgi.gateway_sockets = uwsgi_malloc(sizeof(struct uwsgi_gateway_socket));
+		uwsgi_sock = uwsgi.gateway_sockets;
+	}
+	else {
+		while (uwsgi_sock) {
+			old_uwsgi_sock = uwsgi_sock;
+			uwsgi_sock = uwsgi_sock->next;
+		}
+
+		uwsgi_sock = uwsgi_malloc(sizeof(struct uwsgi_gateway_socket));
+		old_uwsgi_sock->next = uwsgi_sock;
+	}
+
+	memset(uwsgi_sock, 0, sizeof(struct uwsgi_gateway_socket));
+	uwsgi_sock->fd = fd;
+	uwsgi_sock->name = uwsgi_getsockname(fd);
+	uwsgi_sock->name_len = strlen(uwsgi_sock->name);
+	uwsgi_sock->owner = owner;
+
+	return uwsgi_sock;
+}
+
+
+void uwsgi_gateway_go_cheap(char *gw_id, int queue, int *i_am_cheap) {
+
+	uwsgi_log("[%s pid %d] no more nodes available. Going cheap...\n", gw_id, (int) uwsgi.mypid);
+	struct uwsgi_gateway_socket *ugs = uwsgi.gateway_sockets;
+	while (ugs) {
+		if (!strcmp(ugs->owner, gw_id) && !ugs->subscription) {
+			event_queue_del_fd(queue, ugs->fd, event_queue_read());
+		}
+		ugs = ugs->next;
+	}
+	*i_am_cheap = 1;
+}

core/hash.c

@@ -0,0 +1,93 @@
+#include <uwsgi.h>
+
+extern struct uwsgi_server uwsgi;
+
+// Bernstein classic hash (this is not static as it is used by other areas)
+uint32_t djb33x_hash(char *key, uint64_t keylen) {
+
+        register uint32_t hash = 5381;
+        uint64_t i;
+
+        for (i = 0; i < keylen; i++) {
+                hash = ((hash << 5) + hash) ^ key[i];
+        }
+
+        return hash;
+}
+
+// Murmur2 hash Copyright (C) Austin Appleby
+// adapted from nginx
+uint32_t murmur2_hash(char *key, uint64_t keylen) {
+
+	uint32_t  h, k;
+	uint8_t *ukey = (uint8_t *) key;
+	h = 0 ^ keylen;
+	while (keylen >= 4) {
+        	k  = ukey[0];
+        	k |= ukey[1] << 8;
+        	k |= ukey[2] << 16;
+        	k |= ukey[3] << 24;
+
+        	k *= 0x5bd1e995;
+        	k ^= k >> 24;
+        	k *= 0x5bd1e995;
+
+        	h *= 0x5bd1e995;
+        	h ^= k;
+
+        	ukey += 4;
+        	keylen -= 4;
+    	}
+
+	switch (keylen) {
+		case 3:
+        		h ^= key[2] << 16;
+    		case 2:
+        		h ^= key[1] << 8;
+    		case 1:
+        		h ^= key[0];
+        		h *= 0x5bd1e995;
+    	}
+
+	h ^= h >> 13;
+	h *= 0x5bd1e995;
+	h ^= h >> 15;
+
+	return h;
+}
+
+
+struct uwsgi_hash_algo *uwsgi_hash_algo_get(char *name) {
+	struct uwsgi_hash_algo *uha = uwsgi.hash_algos;
+	while(uha) {
+		if (!strcmp(name, uha->name)) {
+			return uha;
+		}
+		uha = uha->next;
+	}
+	return NULL;
+}
+void uwsgi_hash_algo_register(char *name, uint32_t (*func)(char *, uint64_t)) {
+
+	struct uwsgi_hash_algo *old_uha = NULL, *uha = uwsgi.hash_algos;
+	while(uha) {
+		if (!strcmp(uha->name, name)) return;
+		old_uha = uha;
+		uha = uha->next;
+	} 
+
+	uha = uwsgi_calloc(sizeof(struct uwsgi_hash_algo));
+	uha->name = name;
+	uha->func = func;
+	if (old_uha) {
+		old_uha->next = uha;
+	}
+	else {
+		uwsgi.hash_algos = uha;
+	}
+}
+
+void uwsgi_hash_algo_register_all() {
+	uwsgi_hash_algo_register("djb33x", djb33x_hash);
+	uwsgi_hash_algo_register("murmur2", murmur2_hash);
+}

core/ini.c

@@ -1,6 +1,4 @@
-#ifdef UWSGI_INI
-
-#include "uwsgi.h"
+#include <uwsgi.h>
 
 extern struct uwsgi_server uwsgi;
 
@@ -9,12 +7,14 @@ extern struct uwsgi_server uwsgi;
    This memory must not be freed for all the server lifecycle
    */
 
+static char *last_file = NULL;
+
 void ini_rstrip(char *line) {
 
 	off_t i;
 
-	for(i = strlen(line)-1;i>=0; i--) {
-		if (line[i] == ' ' || line[i] == '\t') {
+	for (i = strlen(line) - 1; i >= 0; i--) {
+		if (line[i] == ' ' || line[i] == '\t' || line[i] == '\r') {
 			line[i] = 0;
 			continue;
 		}
@@ -27,8 +27,8 @@ char *ini_lstrip(char *line) {
 	off_t i;
 	char *ptr = line;
 
-	for(i=0;i< (int) strlen(line);i++) {
-		if (line[i] == ' ' || line[i] == '\t') {
+	for (i = 0; i < (int) strlen(line); i++) {
+		if (line[i] == ' ' || line[i] == '\t' || line[i] == '\r') {
 			ptr++;
 			continue;
 		}
@@ -43,7 +43,7 @@ char *ini_get_key(char *key) {
 	off_t i;
 	char *ptr = key;
 
-	for(i=0;i< (int) strlen(key);i++) {
+	for (i = 0; i < (int) strlen(key); i++) {
 		ptr++;
 		if (key[i] == '=') {
 			key[i] = 0;
@@ -54,12 +54,12 @@ char *ini_get_key(char *key) {
 	return ptr;
 }
 
-char *ini_get_line(char *ini, off_t size) {
+char *ini_get_line(char *ini, size_t size) {
 
-	off_t i;
+	size_t i;
 	char *ptr = ini;
 
-	for(i=0;i<size;i++) {
+	for (i = 0; i < size; i++) {
 		ptr++;
 		if (ini[i] == '\n') {
 			ini[i] = 0;
@@ -78,7 +78,7 @@ char *ini_get_line(char *ini, off_t size) {
 
 void uwsgi_ini_config(char *file, char *magic_table[]) {
 
-	int len = 0;
+	size_t len = 0;
 	char *ini;
 
 	char *ini_line;
@@ -92,28 +92,39 @@ void uwsgi_ini_config(char *file, char *magic_table[]) {
 	char *section_asked = "uwsgi";
 	char *colon;
 
-	if (!uwsgi_startswith(file, "http://", 7) || !uwsgi_startswith(file, "data://", 7) || !uwsgi_startswith(file, "sym://", 6) ) {
-                colon = uwsgi_get_last_char(file, '/');
-                colon = uwsgi_get_last_char(colon, ':');
-        }
-        else {
-                colon = uwsgi_get_last_char(file, ':');
-        }
+
+	if (uwsgi_check_scheme(file)) {
+		colon = uwsgi_get_last_char(file, '/');
+		colon = uwsgi_get_last_char(colon, ':');
+	}
+	else {
+		colon = uwsgi_get_last_char(file, ':');
+	}
 
 	if (colon) {
 		colon[0] = 0;
 		if (colon[1] != 0) {
-			section_asked = colon+1;
+			section_asked = colon + 1;
+		}
+
+		if (colon == file) {
+			file = last_file;
 		}
 	}
 
-	if (file[0] != 0) {
-		uwsgi_log("[uWSGI] getting INI configuration from %s\n", file);
+	if (file[0] != 0 && file != last_file) {
+		uwsgi_log_initial("[uWSGI] getting INI configuration from %s\n", file);
 	}
 
 	ini = uwsgi_open_and_read(file, &len, 1, magic_table);
+	if (file != last_file) {
+		if (last_file) {
+			free(last_file);
+		}
+		last_file = uwsgi_str(file);
+	}
 
-	while(len) {
+	while (len) {
 		ini_line = ini_get_line(ini, len);
 		if (ini_line == NULL) {
 			break;
@@ -125,8 +136,8 @@ void uwsgi_ini_config(char *file, char *magic_table[]) {
 		ini_rstrip(key);
 		if (key[0] != 0) {
 			if (key[0] == '[') {
-				section = key+1;
-				section[strlen(section)-1] = 0;
+				section = key + 1;
+				section[strlen(section) - 1] = 0;
 			}
 			else if (key[0] == ';' || key[0] == '#') {
 				// this is a comment
@@ -139,7 +150,7 @@ void uwsgi_ini_config(char *file, char *magic_table[]) {
 					ini_rstrip(key);
 					val = ini_lstrip(val);
 					ini_rstrip(val);
-					add_exported_option((char *)key, val, 0);
+					add_exported_option((char *) key, val, 0);
 				}
 			}
 		}
@@ -156,5 +167,3 @@ void uwsgi_ini_config(char *file, char *magic_table[]) {
 
 
 }
-
-#endif

core/init.c

@@ -0,0 +1,450 @@
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+struct http_status_codes {
+        const char key[3];
+        const char *message;
+        int message_size;
+};
+
+/* statistically ordered */
+struct http_status_codes hsc[] = {
+        {"200", "OK"},
+        {"302", "Found"},
+        {"404", "Not Found"},
+        {"500", "Internal Server Error"},
+        {"301", "Moved Permanently"},
+        {"304", "Not Modified"},
+        {"303", "See Other"},
+        {"403", "Forbidden"},
+        {"307", "Temporary Redirect"},
+        {"401", "Unauthorized"},
+        {"400", "Bad Request"},
+        {"405", "Method Not Allowed"},
+        {"408", "Request Timeout"},
+
+        {"100", "Continue"},
+        {"101", "Switching Protocols"},
+        {"201", "Created"},
+        {"202", "Accepted"},
+        {"203", "Non-Authoritative Information"},
+        {"204", "No Content"},
+        {"205", "Reset Content"},
+        {"206", "Partial Content"},
+        {"300", "Multiple Choices"},
+        {"305", "Use Proxy"},
+        {"402", "Payment Required"},
+        {"406", "Not Acceptable"},
+        {"407", "Proxy Authentication Required"},
+        {"409", "Conflict"},
+        {"410", "Gone"},
+        {"411", "Length Required"},
+        {"412", "Precondition Failed"},
+        {"413", "Request Entity Too Large"},
+        {"414", "Request-URI Too Long"},
+        {"415", "Unsupported Media Type"},
+        {"416", "Requested Range Not Satisfiable"},
+        {"417", "Expectation Failed"},
+        {"501", "Not Implemented"},
+        {"502", "Bad Gateway"},
+        {"503", "Service Unavailable"},
+        {"504", "Gateway Timeout"},
+        {"505", "HTTP Version Not Supported"},
+        {"", NULL},
+};
+
+
+
+
+void uwsgi_init_default() {
+
+	uwsgi.cpus = 1;
+
+	uwsgi.backtrace_depth = 64;
+	uwsgi.max_apps = 64;
+
+	uwsgi.master_queue = -1;
+
+	uwsgi.signal_socket = -1;
+	uwsgi.my_signal_socket = -1;
+	uwsgi.stats_fd = -1;
+
+	uwsgi.stats_pusher_default_freq = 3;
+
+	uwsgi.original_log_fd = -1;
+
+	uwsgi.emperor_fd_config = -1;
+	// default emperor scan frequency
+	uwsgi.emperor_freq = 3;
+	uwsgi.emperor_throttle = 1000;
+	uwsgi.emperor_heartbeat = 30;
+	// max 3 minutes throttling
+	uwsgi.emperor_max_throttle = 1000 * 180;
+	uwsgi.emperor_pid = -1;
+
+	uwsgi.subscribe_freq = 10;
+	uwsgi.subscription_tolerance = 17;
+
+	uwsgi.cores = 1;
+	uwsgi.threads = 1;
+
+	// default max number of rpc slot
+	uwsgi.rpc_max = 64;
+
+	uwsgi.offload_threads_events = 64;
+
+	uwsgi.default_app = -1;
+
+	uwsgi.buffer_size = 4096;
+	uwsgi.body_read_warning = 8;
+	uwsgi.numproc = 1;
+
+	uwsgi.forkbomb_delay = 2;
+
+	uwsgi.async = 1;
+	uwsgi.listen_queue = 100;
+
+	uwsgi.cheaper_overload = 3;
+
+	uwsgi.log_master_bufsize = 8192;
+
+	uwsgi.worker_reload_mercy = 60;
+
+	uwsgi.max_vars = MAX_VARS;
+	uwsgi.vec_size = 4 + 1 + (4 * MAX_VARS);
+
+	uwsgi.shared->options[UWSGI_OPTION_SOCKET_TIMEOUT] = 4;
+	uwsgi.shared->options[UWSGI_OPTION_LOGGING] = 1;
+
+	// a workers hould be running for at least 10 seconds
+	uwsgi.shared->options[UWSGI_OPTION_MIN_WORKER_LIFETIME] = 10;
+
+	uwsgi.shared->spooler_frequency = 30;
+
+	uwsgi.shared->spooler_signal_pipe[0] = -1;
+	uwsgi.shared->spooler_signal_pipe[1] = -1;
+
+	uwsgi.shared->mule_signal_pipe[0] = -1;
+	uwsgi.shared->mule_signal_pipe[1] = -1;
+
+	uwsgi.shared->mule_queue_pipe[0] = -1;
+	uwsgi.shared->mule_queue_pipe[1] = -1;
+
+	uwsgi.shared->worker_log_pipe[0] = -1;
+	uwsgi.shared->worker_log_pipe[1] = -1;
+
+	uwsgi.shared->worker_req_log_pipe[0] = -1;
+	uwsgi.shared->worker_req_log_pipe[1] = -1;
+
+	uwsgi.req_log_fd = 2;
+
+#ifdef UWSGI_SSL
+	// 1 day of tolerance
+	uwsgi.subscriptions_sign_check_tolerance = 3600 * 24;
+	uwsgi.ssl_sessions_timeout = 300;
+#endif
+
+	uwsgi.alarm_freq = 3;
+	uwsgi.alarm_msg_size = 8192;
+
+	uwsgi.exception_handler_msg_size = 65536;
+
+	uwsgi.multicast_ttl = 1;
+	uwsgi.multicast_loop = 1;
+
+	// filling http status codes
+	struct http_status_codes *http_sc;
+        for (http_sc = hsc; http_sc->message != NULL; http_sc++) {
+                http_sc->message_size = strlen(http_sc->message);
+        }
+
+	uwsgi.empty = "";
+
+	uwsgi.wait_read_hook = uwsgi_simple_wait_read_hook;
+	uwsgi.wait_write_hook = uwsgi_simple_wait_write_hook;
+
+	uwsgi_websockets_init();
+}
+
+void uwsgi_setup_reload() {
+
+	char env_reload_buf[11];
+
+	char *env_reloads = getenv("UWSGI_RELOADS");
+	if (env_reloads) {
+		//convert env value to int
+		uwsgi.reloads = atoi(env_reloads);
+		uwsgi.reloads++;
+		//convert reloads to string
+		int rlen = snprintf(env_reload_buf, 10, "%u", uwsgi.reloads);
+		if (rlen > 0) {
+			env_reload_buf[rlen] = 0;
+			if (setenv("UWSGI_RELOADS", env_reload_buf, 1)) {
+				uwsgi_error("setenv()");
+			}
+		}
+		uwsgi.is_a_reload = 1;
+	}
+	else {
+		if (setenv("UWSGI_RELOADS", "0", 1)) {
+			uwsgi_error("setenv()");
+		}
+	}
+
+}
+
+void uwsgi_autoload_plugins_by_name(char *argv_zero) {
+
+	char *plugins_requested = NULL;
+
+	char *original_proc_name = getenv("UWSGI_ORIGINAL_PROC_NAME");
+	if (!original_proc_name) {
+		// here we use argv[0];
+		original_proc_name = argv_zero;
+		setenv("UWSGI_ORIGINAL_PROC_NAME", original_proc_name, 1);
+	}
+	char *p = strrchr(original_proc_name, '/');
+	if (p == NULL)
+		p = original_proc_name;
+	p = strstr(p, "uwsgi_");
+	if (p != NULL) {
+		plugins_requested = strtok(uwsgi_str(p + 6), "_");
+		while (plugins_requested) {
+			uwsgi_log("[uwsgi] implicit plugin requested %s\n", plugins_requested);
+			uwsgi_load_plugin(-1, plugins_requested, NULL);
+			plugins_requested = strtok(NULL, "_");
+		}
+	}
+
+	plugins_requested = getenv("UWSGI_PLUGINS");
+	if (plugins_requested) {
+		plugins_requested = uwsgi_concat2(plugins_requested, "");
+		char *p = strtok(plugins_requested, ",");
+		while (p != NULL) {
+			uwsgi_load_plugin(-1, p, NULL);
+			p = strtok(NULL, ",");
+		}
+	}
+
+}
+
+void uwsgi_commandline_config() {
+	int i;
+
+	uwsgi.option_index = -1;
+
+	char *optname;
+	while ((i = getopt_long(uwsgi.argc, uwsgi.argv, uwsgi.short_options, uwsgi.long_options, &uwsgi.option_index)) != -1) {
+
+		if (i == '?') {
+			uwsgi_log("getopt_long() error\n");
+			exit(1);
+		}
+
+		if (uwsgi.option_index > -1) {
+			optname = (char *) uwsgi.long_options[uwsgi.option_index].name;
+		}
+		else {
+			optname = uwsgi_get_optname_by_index(i);
+		}
+		if (!optname) {
+			uwsgi_log("unable to parse command line options\n");
+			exit(1);
+		}
+		uwsgi.option_index = -1;
+		add_exported_option(optname, optarg, 0);
+	}
+
+
+#ifdef UWSGI_DEBUG
+	uwsgi_log("optind:%d argc:%d\n", optind, uwsgi.argc);
+#endif
+
+	if (optind < uwsgi.argc) {
+		for (i = optind; i < uwsgi.argc; i++) {
+			char *lazy = uwsgi.argv[i];
+			if (lazy[0] != '[') {
+				uwsgi_opt_load(NULL, lazy, NULL);
+				// manage magic mountpoint
+				int magic = 0;
+				int j;
+				for (j = 0; j < uwsgi.gp_cnt; j++) {
+					if (uwsgi.gp[j]->magic) {
+						if (uwsgi.gp[j]->magic(NULL, lazy)) {
+							magic = 1;
+							break;
+						}
+					}
+				}
+				if (!magic) {
+					for (j = 0; j < 256; j++) {
+						if (uwsgi.p[j]->magic) {
+							if (uwsgi.p[j]->magic(NULL, lazy)) {
+								magic = 1;
+								break;
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+
+}
+
+void uwsgi_setup_workers() {
+	int i, j;
+	// allocate shared memory for workers + master
+	uwsgi.workers = (struct uwsgi_worker *) uwsgi_calloc_shared(sizeof(struct uwsgi_worker) * (uwsgi.numproc + 1));
+
+	for (i = 0; i <= uwsgi.numproc; i++) {
+		// allocate memory for apps
+		uwsgi.workers[i].apps = (struct uwsgi_app *) uwsgi_calloc_shared(sizeof(struct uwsgi_app) * uwsgi.max_apps);
+
+		// allocate memory for cores
+		uwsgi.workers[i].cores = (struct uwsgi_core *) uwsgi_calloc_shared(sizeof(struct uwsgi_core) * uwsgi.cores);
+
+		// this is a trick for avoiding too much memory areas
+		void *ts = uwsgi_calloc_shared(sizeof(void *) * uwsgi.max_apps * uwsgi.cores);
+		// add 4 bytes for uwsgi header
+		void *buffers = uwsgi_malloc_shared((uwsgi.buffer_size+4) * uwsgi.cores);
+		void *hvec = uwsgi_malloc_shared(sizeof(struct iovec) * uwsgi.vec_size * uwsgi.cores);
+		void *post_buf = NULL;
+		if (uwsgi.post_buffering > 0)
+			post_buf = uwsgi_malloc_shared(uwsgi.post_buffering_bufsize * uwsgi.cores);
+
+
+		for (j = 0; j < uwsgi.cores; j++) {
+			// allocate shared memory for thread states (required for some language, like python)
+			uwsgi.workers[i].cores[j].ts = ts + ((sizeof(void *) * uwsgi.max_apps) * j);
+			// raw per-request buffer (+4 bytes for uwsgi header)
+			uwsgi.workers[i].cores[j].buffer = buffers + ((uwsgi.buffer_size+4) * j);
+			// iovec for uwsgi vars
+			uwsgi.workers[i].cores[j].hvec = hvec + ((sizeof(struct iovec) * uwsgi.vec_size) * j);
+			if (post_buf)
+				uwsgi.workers[i].cores[j].post_buf = post_buf + (uwsgi.post_buffering_bufsize * j);
+		}
+
+		// master does not need to following steps...
+		if (i == 0)
+			continue;
+		uwsgi.workers[i].signal_pipe[0] = -1;
+		uwsgi.workers[i].signal_pipe[1] = -1;
+		snprintf(uwsgi.workers[i].name, 0xff, "uWSGI worker %d", i);
+		snprintf(uwsgi.workers[i].snapshot_name, 0xff, "uWSGI snapshot %d", i);
+	}
+
+	uint64_t total_memory = (sizeof(struct uwsgi_app) * uwsgi.max_apps) + (sizeof(struct uwsgi_core) * uwsgi.cores) + (sizeof(void *) * uwsgi.max_apps * uwsgi.cores) + (uwsgi.buffer_size * uwsgi.cores) + (sizeof(struct iovec) * uwsgi.vec_size * uwsgi.cores);
+	if (uwsgi.post_buffering > 0) {
+		total_memory += (uwsgi.post_buffering_bufsize * uwsgi.cores);
+	}
+
+	total_memory *= (uwsgi.numproc + uwsgi.master_process);
+	if (uwsgi.numproc > 0)
+		uwsgi_log("mapped %llu bytes (%llu KB) for %d cores\n", (unsigned long long) total_memory, (unsigned long long) (total_memory / 1024), uwsgi.cores * uwsgi.numproc);
+
+	// allocate signal table
+        uwsgi.shared->signal_table = uwsgi_calloc_shared(sizeof(struct uwsgi_signal_entry) * 256 * (uwsgi.numproc + 1));
+
+}
+
+pid_t uwsgi_daemonize2() {
+	if (uwsgi.has_emperor) {
+		logto(uwsgi.daemonize2);
+	}
+	else {
+		if (!uwsgi.is_a_reload) {
+			uwsgi_log("*** daemonizing uWSGI ***\n");
+			daemonize(uwsgi.daemonize2);
+		}
+		else if (uwsgi.log_reopen) {
+			logto(uwsgi.daemonize2);
+		}
+	}
+	uwsgi.mypid = getpid();
+
+	uwsgi.workers[0].pid = uwsgi.mypid;
+
+	if (uwsgi.pidfile && !uwsgi.is_a_reload) {
+		uwsgi_write_pidfile(uwsgi.pidfile);
+	}
+
+	if (uwsgi.pidfile2 && !uwsgi.is_a_reload) {
+		uwsgi_write_pidfile(uwsgi.pidfile2);
+	}
+
+	return uwsgi.mypid;
+}
+
+// fix/check related options
+void sanitize_args() {
+
+        if (uwsgi.async > 1) {
+                uwsgi.cores = uwsgi.async;
+        }
+
+        if (uwsgi.threads > 1) {
+                uwsgi.has_threads = 1;
+                uwsgi.cores = uwsgi.threads;
+        }
+
+        if (uwsgi.shared->options[UWSGI_OPTION_HARAKIRI] > 0) {
+                if (!uwsgi.post_buffering) {
+                        uwsgi_log(" *** WARNING: you have enabled harakiri without post buffering. Slow upload could be rejected on post-unbuffered webservers *** \n");
+                }
+        }
+
+        if (uwsgi.write_errors_exception_only) {
+                uwsgi.ignore_sigpipe = 1;
+                uwsgi.ignore_write_errors = 1;
+        }
+
+        if (uwsgi.cheaper_count == 0) uwsgi.cheaper = 0;
+
+        if (uwsgi.cheaper_count > 0 && uwsgi.cheaper_count >= uwsgi.numproc) {
+                uwsgi_log("invalid cheaper value: must be lower than processes\n");
+                exit(1);
+        }
+
+        if (uwsgi.cheaper && uwsgi.cheaper_count) {
+		if (uwsgi.cheaper_initial) {
+                	if (uwsgi.cheaper_initial < uwsgi.cheaper_count) {
+                        	uwsgi_log("warning: invalid cheaper-initial value (%d), must be equal or higher than cheaper (%d), using %d as initial number of workers\n",
+                                	uwsgi.cheaper_initial, uwsgi.cheaper_count, uwsgi.cheaper_count);
+                        	uwsgi.cheaper_initial = uwsgi.cheaper_count;
+                	}
+                	else if (uwsgi.cheaper_initial > uwsgi.numproc) {
+                        	uwsgi_log("warning: invalid cheaper-initial value (%d), must be lower or equal than worker count (%d), using %d as initial number of workers\n",
+                                	uwsgi.cheaper_initial, uwsgi.numproc, uwsgi.numproc);
+                        	uwsgi.cheaper_initial = uwsgi.numproc;
+                	}
+		}
+		else {
+                        uwsgi.cheaper_initial = uwsgi.cheaper_count;
+		}
+        }
+
+        if (uwsgi.auto_snapshot > 0 && uwsgi.auto_snapshot > uwsgi.numproc) {
+                uwsgi_log("invalid auto-snapshot value: must be <= than processes\n");
+                exit(1);
+        }
+
+	if (uwsgi.shared->options[UWSGI_OPTION_MAX_WORKER_LIFETIME] > 0 && uwsgi.shared->options[UWSGI_OPTION_MIN_WORKER_LIFETIME] >= uwsgi.shared->options[UWSGI_OPTION_MAX_WORKER_LIFETIME]) {
+		uwsgi_log("invalid min-worker-lifetime value (%d), must be lower than max-worker-lifetime (%d)\n",
+			uwsgi.shared->options[UWSGI_OPTION_MIN_WORKER_LIFETIME], uwsgi.shared->options[UWSGI_OPTION_MAX_WORKER_LIFETIME]);
+		exit(1);
+	}
+
+}
+
+const char *uwsgi_http_status_msg(char *status, uint16_t *len) {
+	struct http_status_codes *http_sc;
+	for (http_sc = hsc; http_sc->message != NULL; http_sc++) {
+                if (!strncmp(http_sc->key, status, 3)) {
+                        *len = http_sc->message_size;
+			return http_sc->message;
+                }
+        }
+	return NULL;
+}

core/json.c

@@ -0,0 +1,111 @@
+#ifdef UWSGI_JSON
+
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+#include <jansson.h>
+
+
+/*
+	I really love the jansson library...
+   */
+
+void uwsgi_json_config(char *file, char *magic_table[]) {
+
+	size_t len = 0;
+	char *json_data;
+
+
+	const char *key;
+
+	json_t *root;
+	json_error_t error;
+	json_t *config;
+	json_t *config_value, *config_array_item;
+
+	void *config_iter;
+
+	char *object_asked = "uwsgi";
+	char *colon;
+	int i;
+
+	if (uwsgi_check_scheme(file)) {
+		colon = uwsgi_get_last_char(file, '/');
+		colon = uwsgi_get_last_char(colon, ':');
+	}
+	else {
+		colon = uwsgi_get_last_char(file, ':');
+	}
+
+	if (colon) {
+		colon[0] = 0;
+		if (colon[1] != 0) {
+			object_asked = colon + 1;
+		}
+	}
+
+	uwsgi_log_initial("[uWSGI] getting JSON configuration from %s\n", file);
+
+	json_data = uwsgi_open_and_read(file, &len, 1, magic_table);
+
+#ifdef JANSSON_MAJOR_VERSION
+	root = json_loads(json_data, 0, &error);
+#else
+	root = json_loads(json_data, &error);
+#endif
+
+	if (!root) {
+		uwsgi_log("error parsing JSON data: line %d %s\n", error.line, error.text);
+		exit(1);
+	}
+
+	config = json_object_get(root, object_asked);
+
+	if (!json_is_object(config)) {
+		uwsgi_log("you must define a object named %s in your JSON data\n", object_asked);
+		exit(1);
+	}
+
+	config_iter = json_object_iter(config);
+
+	while (config_iter) {
+		key = json_object_iter_key(config_iter);
+		config_value = json_object_iter_value(config_iter);
+
+		if (json_is_string(config_value)) {
+			add_exported_option((char *) key, (char *) json_string_value(config_value), 0);
+		}
+		else if (json_is_true(config_value)) {
+			add_exported_option((char *) key, strdup("1"), 0);
+		}
+		else if (json_is_false(config_value) || json_is_null(config_value)) {
+			add_exported_option((char *) key, strdup("0"), 0);
+		}
+		else if (json_is_integer(config_value)) {
+			add_exported_option((char *) key, uwsgi_num2str(json_integer_value(config_value)), 0);
+		}
+		else if (json_is_array(config_value)) {
+			for (i = 0; i < (int) json_array_size(config_value); i++) {
+				config_array_item = json_array_get(config_value, i);
+				if (json_is_string(config_array_item)) {
+					add_exported_option((char *) key, (char *) json_string_value(config_array_item), 0);
+				}
+				else if (json_is_true(config_array_item)) {
+					add_exported_option((char *) key, strdup("1"), 0);
+				}
+				else if (json_is_false(config_array_item) || json_is_null(config_array_item)) {
+					add_exported_option((char *) key, strdup("0"), 0);
+				}
+				else if (json_is_integer(config_array_item)) {
+					add_exported_option((char *) key, uwsgi_num2str(json_integer_value(config_array_item)), 0);
+				}
+			}
+		}
+
+		config_iter = json_object_iter_next(config, config_iter);
+	}
+
+}
+
+#endif

core/ldap.c

@@ -19,25 +19,25 @@ void ldap2uwsgi(char *ldapname, char *uwsginame) {
 
 	int i;
 
-	for(i=0;i< (int) strlen(ldapname);i++) {
-		if (isupper( (int)ldapname[i])) {
+	for (i = 0; i < (int) strlen(ldapname); i++) {
+		if (isupper((int) ldapname[i])) {
 			*ptr++ = '-';
-			*ptr++ = tolower( (int) ldapname[i]);
+			*ptr++ = tolower((int) ldapname[i]);
 		}
 		else {
 			*ptr++ = ldapname[i];
 		}
 	}
 
-	*ptr++= 0;
+	*ptr++ = 0;
 }
 
 int calc_ldap_name(char *name) {
 	int i;
 	int counter = 0;
 
-	for(i=0;i< (int)strlen(name);i++) {
-		if (isupper( (int) name[i])) {
+	for (i = 0; i < (int) strlen(name); i++) {
+		if (isupper((int) name[i])) {
 			counter++;
 		}
 	}
@@ -52,7 +52,7 @@ struct uwsgi_ldap_entry {
 };
 
 
-void uwsgi_name_to_ldap(char *src, char *dst) {	
+void uwsgi_name_to_ldap(char *src, char *dst) {
 
 	int i;
 	char *ptr = dst;
@@ -61,16 +61,16 @@ void uwsgi_name_to_ldap(char *src, char *dst) {
 
 	strcat(dst, " 'uWSGI");
 
-	ptr+= 7;
+	ptr += 7;
 
-	for(i=0;i< (int)strlen(src);i++) {
-        	if (src[i] == '-') {
-                	i++;
-                        *ptr++= toupper( (int) src[i]);
-                }
-                else {
-                	*ptr++= src[i];
-                }
+	for (i = 0; i < (int) strlen(src); i++) {
+		if (src[i] == '-') {
+			i++;
+			*ptr++ = toupper((int) src[i]);
+		}
+		else {
+			*ptr++ = src[i];
+		}
 	}
 
 	strcat(dst, "'");
@@ -82,7 +82,7 @@ struct uwsgi_ldap_entry *get_ldap_by_num(struct uwsgi_ldap_entry *root, int num,
 	int i;
 	struct uwsgi_ldap_entry *ule;
 
-	for(i=0;i<count;i++) {
+	for (i = 0; i < count; i++) {
 		ule = &root[i];
 		if (ule->num == num) {
 			return ule;
@@ -96,9 +96,9 @@ struct uwsgi_ldap_entry *search_ldap_cache(struct uwsgi_ldap_entry *root, char *
 	int i;
 	struct uwsgi_ldap_entry *ule;
 
-	for(i=0;i<count;i++) {
+	for (i = 0; i < count; i++) {
 		ule = &root[i];
-		if (uwsgi_list_has_str(ule->names, name+1)) {
+		if (uwsgi_list_has_str(ule->names, name + 1)) {
 			return ule;
 		}
 	}
@@ -108,56 +108,38 @@ struct uwsgi_ldap_entry *search_ldap_cache(struct uwsgi_ldap_entry *root, char *
 
 struct uwsgi_ldap_entry *get_ldap_names(int *count) {
 
-	struct option *aopt, *lopt;
+	struct uwsgi_option *op = uwsgi.options;
 	struct uwsgi_ldap_entry *ule, *entry;
 	char ldap_name[1024];
-	static int counter = 30000000;
 
 	*count = 0;
-	lopt = uwsgi.long_options;
 
-	ule = uwsgi_malloc(sizeof(struct uwsgi_ldap_entry)*count_options(lopt));
+	ule = uwsgi_malloc(sizeof(struct uwsgi_ldap_entry) * uwsgi_count_options(op));
 
-	while( (aopt = lopt) ) {
-                if (!aopt->name)
-                        break;
+	while (op && op->name) {
 
-		uwsgi_name_to_ldap((char *)aopt->name, ldap_name);
+		uwsgi_name_to_ldap((char *) op->name, ldap_name);
 
 		entry = search_ldap_cache(ule, ldap_name, *count);
 
-		if (entry) goto next;
+		if (entry)
+			goto next;
 
-		if (aopt->flag) {
-			entry = &ule[*count] ;
-			entry->num = counter;
-			strcpy(entry->names, ldap_name);
-			counter++;
-			*count = *count+1;
-		}
-		else {
-			entry = get_ldap_by_num(ule, aopt->val, *count);
-			if (entry) {
-				strcat(entry->names, ldap_name);
-			}
-			else {
-				entry = &ule[*count] ;
-				entry->num = aopt->val;
-				strcpy(entry->names, ldap_name);
-				*count = *count+1;
-			}
-		}
+		entry = &ule[*count];
+		entry->num = *count;
+		strcpy(entry->names, ldap_name);
+		*count = *count + 1;
+
+		entry->has_arg = op->type;
 
-		entry->has_arg = aopt->has_arg;
-		
 next:
-		lopt++;
+		op++;
 	}
 
 	return ule;
 }
 
-void uwsgi_ldap_schema_dump_ldif() {
+void uwsgi_opt_ldap_dump_ldif(char *opt, char *foo, void *bar) {
 
 	int i;
 	int items;
@@ -169,7 +151,7 @@ void uwsgi_ldap_schema_dump_ldif() {
 
 	struct uwsgi_ldap_entry *entry, *ule = get_ldap_names(&items);
 
-	for(i=0;i<items;i++) {
+	for (i = 0; i < items; i++) {
 
 		entry = &ule[i];
 		uwsgi_log("olcAttributeTypes: ( 1.3.6.1.4.1.35156.17.4.%d NAME (%s", entry->num, entry->names);
@@ -187,19 +169,19 @@ void uwsgi_ldap_schema_dump_ldif() {
 
 	uwsgi_log("olcObjectClasses: ( 1.3.6.1.4.1.35156.17.3.1 NAME 'uWSGIConfig' SUP top AUXILIARY DESC 'uWSGI configuration' MAY ( ");
 
-	
-	for(i=0;i<items;i++) {
 
-                entry = &ule[i];
+	for (i = 0; i < items; i++) {
 
-		char *list2 = uwsgi_concat2(entry->names+1, "");
+		entry = &ule[i];
+
+		char *list2 = uwsgi_concat2(entry->names + 1, "");
 		char *p = strtok(list2, " ");
-        	while (p != NULL) {
-			uwsgi_log("%.*s $ ", strlen(p)-2, p+1);
-                	p = strtok(NULL, " ");
-        	}
+		while (p != NULL) {
+			uwsgi_log("%.*s $ ", strlen(p) - 2, p + 1);
+			p = strtok(NULL, " ");
+		}
 
-        	free(list2);
+		free(list2);
 
 	}
 
@@ -210,45 +192,45 @@ void uwsgi_ldap_schema_dump_ldif() {
 	exit(0);
 }
 
-void uwsgi_ldap_schema_dump() {
+void uwsgi_opt_ldap_dump(char *opt, char *foo, void *bar) {
 
 	int i;
 	int items;
 
 	struct uwsgi_ldap_entry *entry, *ule = get_ldap_names(&items);
 
-        for(i=0;i<items;i++) {
+	for (i = 0; i < items; i++) {
 
-                entry = &ule[i];
-                uwsgi_log("attributetype ( 1.3.6.1.4.1.35156.17.4.%d NAME (%s", entry->num, entry->names);
+		entry = &ule[i];
+		uwsgi_log("attributetype ( 1.3.6.1.4.1.35156.17.4.%d NAME (%s", entry->num, entry->names);
 
-                if (entry->has_arg) {
-                        uwsgi_log(" ) SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )\n");
-                }
-                else {
-                        uwsgi_log(" ) SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 )\n");
-                }
-        }
+		if (entry->has_arg) {
+			uwsgi_log(" ) SYNTAX 1.3.6.1.4.1.1466.115.121.1.26 )\n");
+		}
+		else {
+			uwsgi_log(" ) SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 )\n");
+		}
+	}
 
 
 	uwsgi_log("attributetype ( 1.3.6.1.4.1.35156.17.4.50000 NAME 'uWSGInull' SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 )\n");
 
 	uwsgi_log("objectclass ( 1.3.6.1.4.1.35156.17.3.1 NAME 'uWSGIConfig' SUP top AUXILIARY DESC 'uWSGI configuration' MAY ( ");
 
-	for(i=0;i<items;i++) {
+	for (i = 0; i < items; i++) {
 
-                entry = &ule[i];
+		entry = &ule[i];
 
-                char *list2 = uwsgi_concat2(entry->names+1, "");
-                char *p = strtok(list2, " ");
-                while (p != NULL) {
-                        uwsgi_log("%.*s $ ", strlen(p)-2, p+1);
-                        p = strtok(NULL, " ");
-                }
+		char *list2 = uwsgi_concat2(entry->names + 1, "");
+		char *p = strtok(list2, " ");
+		while (p != NULL) {
+			uwsgi_log("%.*s $ ", strlen(p) - 2, p + 1);
+			p = strtok(NULL, " ");
+		}
 
-                free(list2);
+		free(list2);
 
-        }
+	}
 
 
 
@@ -258,7 +240,7 @@ void uwsgi_ldap_schema_dump() {
 	exit(0);
 }
 
-void uwsgi_ldap_config() {
+void uwsgi_ldap_config(char *url) {
 
 	LDAP *ldp;
 	LDAPMessage *results, *entry;
@@ -267,7 +249,6 @@ void uwsgi_ldap_config() {
 	char *attr;
 	char *uwsgi_attr;
 
-	char *url = "ldap:///";
 	char *url_slash;
 
 	int desired_version = LDAP_VERSION3;
@@ -275,10 +256,6 @@ void uwsgi_ldap_config() {
 
 	LDAPURLDesc *ldap_url;
 
-	if (uwsgi.ldap) {
-		url = uwsgi.ldap;
-	}
-
 	if (!ldap_is_ldap_url(url)) {
 		uwsgi_log("invalid LDAP url.\n");
 		exit(1);
@@ -288,7 +265,7 @@ void uwsgi_ldap_config() {
 		uwsgi_log("unable to parse LDAP url.\n");
 		exit(1);
 	}
-	
+
 	uwsgi_log("[uWSGI] getting LDAP configuration from %s\n", url);
 
 	url_slash = strchr(url, '/');
@@ -305,25 +282,25 @@ void uwsgi_ldap_config() {
 #endif
 
 #if LDAP_API_VERSION >= 3000
-	if ( (ret = ldap_initialize( &ldp, url)) != LDAP_SUCCESS) {
+	if ((ret = ldap_initialize(&ldp, url)) != LDAP_SUCCESS) {
 		uwsgi_log("LDAP: %s\n", ldap_err2string(ret));
 		exit(1);
 	}
 #else
-	if ( (ldp = ldap_init( ldap_url->lud_host, ldap_url->lud_port)) == NULL) {
+	if ((ldp = ldap_init(ldap_url->lud_host, ldap_url->lud_port)) == NULL) {
 		uwsgi_error("ldap_init()");
 		exit(1);
 	}
 #endif
 
 
-	if ( (ret = ldap_set_option(ldp, LDAP_OPT_PROTOCOL_VERSION, &desired_version)) != LDAP_OPT_SUCCESS) {
+	if ((ret = ldap_set_option(ldp, LDAP_OPT_PROTOCOL_VERSION, &desired_version)) != LDAP_OPT_SUCCESS) {
 		uwsgi_log("LDAP: %s\n", ldap_err2string(ret));
 		exit(1);
 	}
 
 
-	if ( (ret = ldap_search_ext_s(ldp, ldap_url->lud_dn, ldap_url->lud_scope, ldap_url->lud_filter, NULL, 0, NULL, NULL, NULL, 1, &results)) != LDAP_SUCCESS) {
+	if ((ret = ldap_search_ext_s(ldp, ldap_url->lud_dn, ldap_url->lud_scope, ldap_url->lud_filter, NULL, 0, NULL, NULL, NULL, 1, &results)) != LDAP_SUCCESS) {
 		uwsgi_log("LDAP: %s\n", ldap_err2string(ret));
 		exit(1);
 	}
@@ -342,17 +319,17 @@ void uwsgi_ldap_config() {
 	entry = ldap_first_entry(ldp, results);
 
 	int found = 0;
-	for( attr = ldap_first_attribute(ldp, entry, &ber); attr != NULL; attr = ldap_next_attribute(ldp, entry, ber)) {
-		if (!strncmp(attr,"uWSGI",5)) {
+	for (attr = ldap_first_attribute(ldp, entry, &ber); attr != NULL; attr = ldap_next_attribute(ldp, entry, ber)) {
+		if (!strncmp(attr, "uWSGI", 5)) {
 
 			found = 1;
-			uwsgi_attr = malloc( calc_ldap_name(attr) + 1 );
+			uwsgi_attr = malloc(calc_ldap_name(attr) + 1);
 			if (!uwsgi_attr) {
 				uwsgi_error("malloc()");
 				exit(1);
 			}
 
-			ldap2uwsgi(attr+5, uwsgi_attr);
+			ldap2uwsgi(attr + 5, uwsgi_attr);
 
 #ifdef UWSGI_DEBUG
 			uwsgi_debug("LDAP attribute: %s = --%s\n", attr, uwsgi_attr);
@@ -360,7 +337,7 @@ void uwsgi_ldap_config() {
 			bervalues = ldap_get_values_len(ldp, entry, attr);
 			if (bervalues) {
 				// do not free uwsgi_attr/uwsgi_val;
-				char *uwsgi_val = malloc( bervalues[0]->bv_len + 1 );
+				char *uwsgi_val = malloc(bervalues[0]->bv_len + 1);
 				if (!uwsgi_val) {
 					uwsgi_error("malloc()");
 					exit(1);
@@ -369,7 +346,7 @@ void uwsgi_ldap_config() {
 				memcpy(uwsgi_val, bervalues[0]->bv_val, bervalues[0]->bv_len);
 				uwsgi_val[bervalues[0]->bv_len] = 0;
 
-				add_exported_option((char*) uwsgi_attr, uwsgi_val, 0);
+				add_exported_option((char *) uwsgi_attr, uwsgi_val, 0);
 				free(bervalues);
 			}
 			else {

core/lock.c

@@ -0,0 +1,776 @@
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+static struct uwsgi_lock_item *uwsgi_register_lock(char *id, int rw) {
+
+	struct uwsgi_lock_item *uli = uwsgi.registered_locks;
+	if (!uli) {
+		uwsgi.registered_locks = uwsgi_malloc_shared(sizeof(struct uwsgi_lock_item));
+		uwsgi.registered_locks->id = id;
+		uwsgi.registered_locks->pid = 0;
+		if (rw) {
+			uwsgi.registered_locks->lock_ptr = uwsgi_malloc_shared(uwsgi.rwlock_size);
+		}
+		else {
+			uwsgi.registered_locks->lock_ptr = uwsgi_malloc_shared(uwsgi.lock_size);
+		}
+		uwsgi.registered_locks->rw = rw;
+		uwsgi.registered_locks->next = NULL;
+		return uwsgi.registered_locks;
+	}
+
+	while (uli) {
+		if (!uli->next) {
+			uli->next = uwsgi_malloc_shared(sizeof(struct uwsgi_lock_item));
+			if (rw) {
+				uli->next->lock_ptr = uwsgi_malloc_shared(uwsgi.rwlock_size);
+			}
+			else {
+				uli->next->lock_ptr = uwsgi_malloc_shared(uwsgi.lock_size);
+			}
+			uli->next->id = id;
+			uli->next->pid = 0;
+			uli->next->rw = rw;
+			uli->next->next = NULL;
+			return uli->next;
+		}
+		uli = uli->next;
+	}
+
+	uwsgi_log("*** DANGER: unable to allocate lock %s ***\n", id);
+	exit(1);
+
+}
+
+#ifdef UWSGI_LOCK_USE_MUTEX
+
+#ifdef OBSOLETE_LINUX_KERNEL
+#undef EOWNERDEAD
+#endif
+
+#ifdef EOWNERDEAD
+#define UWSGI_LOCK_ENGINE_NAME "pthread robust mutexes"
+int uwsgi_pthread_robust_mutexes_enabled = 1;
+#else
+#define UWSGI_LOCK_ENGINE_NAME "pthread mutexes"
+#endif
+
+#define UWSGI_LOCK_SIZE	sizeof(pthread_mutex_t)
+
+#ifdef OBSOLETE_LINUX_KERNEL
+#define UWSGI_RWLOCK_SIZE	sizeof(pthread_mutex_t)
+#else
+#define UWSGI_RWLOCK_SIZE	sizeof(pthread_rwlock_t)
+#endif
+
+#ifndef PTHREAD_PRIO_INHERIT
+int pthread_mutexattr_setprotocol (pthread_mutexattr_t *__attr,
+                                          int __protocol);
+#define PTHREAD_PRIO_INHERIT 1
+#endif
+
+// REMEMBER lock must contains space for both pthread_mutex_t and pthread_mutexattr_t !!! 
+struct uwsgi_lock_item *uwsgi_lock_fast_init(char *id) {
+
+	pthread_mutexattr_t attr;
+
+	struct uwsgi_lock_item *uli = uwsgi_register_lock(id, 0);
+
+#ifdef EOWNERDEAD
+retry:
+#endif
+	if (pthread_mutexattr_init(&attr)) {
+		uwsgi_log("unable to allocate mutexattr structure\n");
+		exit(1);
+	}
+
+	if (pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED)) {
+		uwsgi_log("unable to share mutex\n");
+		exit(1);
+	}
+
+#ifdef EOWNERDEAD
+#ifndef PTHREAD_MUTEX_ROBUST
+#define PTHREAD_MUTEX_ROBUST PTHREAD_MUTEX_ROBUST_NP
+#endif
+	if (pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT)) {
+		uwsgi_log("unable to set PTHREAD_PRIO_INHERIT\n");
+		exit(1);
+	}
+	if (uwsgi_pthread_robust_mutexes_enabled) {
+		if (pthread_mutexattr_setrobust_np(&attr, PTHREAD_MUTEX_ROBUST)) {
+			uwsgi_log("unable to make the mutex 'robust'\n");
+			exit(1);
+		}
+	}
+#endif
+
+	if (pthread_mutex_init((pthread_mutex_t *) uli->lock_ptr, &attr)) {
+#ifdef EOWNERDEAD
+		if (uwsgi_pthread_robust_mutexes_enabled) {
+			uwsgi_log("!!! it looks like your kernel does not support pthread robust mutexes !!!\n");
+			uwsgi_log("!!! falling back to standard pthread mutexes !!!\n");
+			uwsgi_pthread_robust_mutexes_enabled = 0;
+			pthread_mutexattr_destroy(&attr);
+			goto retry;
+		}
+#endif
+		uwsgi_log("unable to initialize mutex\n");
+		exit(1);
+	}
+
+	pthread_mutexattr_destroy(&attr);
+
+#ifdef EOWNERDEAD
+	if (!uwsgi_pthread_robust_mutexes_enabled) {
+		uli->can_deadlock = 1;
+	}
+#else
+	uli->can_deadlock = 1;
+#endif
+
+	return uli;
+}
+
+pid_t uwsgi_lock_fast_check(struct uwsgi_lock_item * uli) {
+
+	if (pthread_mutex_trylock((pthread_mutex_t *) uli->lock_ptr) == 0) {
+		pthread_mutex_unlock((pthread_mutex_t *) uli->lock_ptr);
+		return 0;
+	}
+	return uli->pid;
+}
+
+pid_t uwsgi_rwlock_fast_check(struct uwsgi_lock_item * uli) {
+#ifdef OBSOLETE_LINUX_KERNEL
+	return uwsgi_lock_fast_check(uli);
+#else
+
+	if (pthread_rwlock_trywrlock((pthread_rwlock_t *) uli->lock_ptr) == 0) {
+		pthread_rwlock_unlock((pthread_rwlock_t *) uli->lock_ptr);
+		return 0;
+	}
+	return uli->pid;
+#endif
+}
+
+
+void uwsgi_lock_fast(struct uwsgi_lock_item *uli) {
+
+#ifdef EOWNERDEAD
+	if (pthread_mutex_lock((pthread_mutex_t *) uli->lock_ptr) == EOWNERDEAD) {
+		uwsgi_log("[deadlock-detector] a process holding a robust mutex died. recovering...\n");
+		pthread_mutex_consistent_np((pthread_mutex_t *) uli->lock_ptr);
+	}
+#else
+	pthread_mutex_lock((pthread_mutex_t *) uli->lock_ptr);
+#endif
+	uli->pid = uwsgi.mypid;
+}
+
+void uwsgi_unlock_fast(struct uwsgi_lock_item *uli) {
+
+	pthread_mutex_unlock((pthread_mutex_t *) uli->lock_ptr);
+	uli->pid = 0;
+
+}
+
+void uwsgi_rlock_fast(struct uwsgi_lock_item *uli) {
+#ifdef OBSOLETE_LINUX_KERNEL
+	uwsgi_lock_fast(uli);
+#else
+	pthread_rwlock_rdlock((pthread_rwlock_t *) uli->lock_ptr);
+	uli->pid = uwsgi.mypid;
+#endif
+}
+
+void uwsgi_wlock_fast(struct uwsgi_lock_item *uli) {
+#ifdef OBSOLETE_LINUX_KERNEL
+	uwsgi_lock_fast(uli);
+#else
+	pthread_rwlock_wrlock((pthread_rwlock_t *) uli->lock_ptr);
+	uli->pid = uwsgi.mypid;
+#endif
+}
+
+void uwsgi_rwunlock_fast(struct uwsgi_lock_item *uli) {
+#ifdef OBSOLETE_LINUX_KERNEL
+	uwsgi_unlock_fast(uli);
+#else
+	pthread_rwlock_unlock((pthread_rwlock_t *) uli->lock_ptr);
+	uli->pid = 0;
+#endif
+}
+
+struct uwsgi_lock_item *uwsgi_rwlock_fast_init(char *id) {
+
+#ifdef OBSOLETE_LINUX_KERNEL
+	return uwsgi_lock_fast_init(id);
+#else
+
+	pthread_rwlockattr_t attr;
+
+	struct uwsgi_lock_item *uli = uwsgi_register_lock(id, 1);
+
+	if (pthread_rwlockattr_init(&attr)) {
+		uwsgi_log("unable to allocate rwlock structure\n");
+		exit(1);
+	}
+
+	if (pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_SHARED)) {
+		uwsgi_log("unable to share rwlock\n");
+		exit(1);
+	}
+
+	if (pthread_rwlock_init((pthread_rwlock_t *) uli->lock_ptr, &attr)) {
+		uwsgi_log("unable to initialize rwlock\n");
+		exit(1);
+	}
+
+	pthread_rwlockattr_destroy(&attr);
+
+	uli->can_deadlock = 1;
+
+	return uli;
+#endif
+
+
+
+}
+
+
+
+#elif defined(UWSGI_LOCK_USE_UMTX)
+
+/* Warning: FreeBSD is still not ready for process-shared UMTX */
+
+#include <machine/atomic.h>
+#include <sys/umtx.h>
+
+#define UWSGI_LOCK_SIZE		sizeof(struct umtx)
+#define UWSGI_RWLOCK_SIZE	sizeof(struct umtx)
+#define UWSGI_LOCK_ENGINE_NAME	"FreeBSD umtx"
+
+struct uwsgi_lock_item *uwsgi_rwlock_fast_init(char *id) {
+	return uwsgi_lock_fast_init(id);
+}
+void uwsgi_rlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_fast(uli);
+}
+void uwsgi_wlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_fast(uli);
+}
+void uwsgi_rwunlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_unlock_fast(uli);
+}
+
+struct uwsgi_lock_item *uwsgi_lock_fast_init(char *id) {
+	struct uwsgi_lock_item *uli = uwsgi_register_lock(id, 0);
+	umtx_init((struct umtx *) uli->lock_ptr);
+	return uli;
+}
+
+void uwsgi_lock_fast(struct uwsgi_lock_item *uli) {
+	umtx_lock((struct umtx *) uli->lock_ptr, (u_long) getpid());
+	uli->pid = uwsgi.mypid;
+}
+
+void uwsgi_unlock_fast(struct uwsgi_lock_item *uli) {
+	umtx_unlock((struct umtx *) uli->lock_ptr, (u_long) getpid());
+	uli->pid = 0;
+}
+
+pid_t uwsgi_lock_fast_check(struct uwsgi_lock_item *uli) {
+	if (umtx_trylock((struct umtx *) uli->lock_ptr, (u_long) getpid())) {
+		umtx_unlock((struct umtx *) uli->lock_ptr, (u_long) getpid());
+		return 0;
+	}
+	return uli->pid;
+}
+
+pid_t uwsgi_rwlock_fast_check(struct uwsgi_lock_item * uli) {
+	return uwsgi_lock_fast_check(uli);
+}
+
+#elif defined(UWSGI_LOCK_USE_POSIX_SEM)
+
+#define UWSGI_LOCK_SIZE         sizeof(sem_t)
+#define UWSGI_RWLOCK_SIZE       sizeof(sem_t)
+#define UWSGI_LOCK_ENGINE_NAME  "POSIX semaphores"
+
+#include <semaphore.h>
+
+struct uwsgi_lock_item *uwsgi_lock_fast_init(char *id) {
+	struct uwsgi_lock_item *uli = uwsgi_register_lock(id, 0);
+	sem_init((sem_t *) uli->lock_ptr, 1, 1);
+	uli->can_deadlock = 1;
+	return uli;
+}
+
+struct uwsgi_lock_item *uwsgi_rwlock_fast_init(char *id) {
+	return uwsgi_lock_fast_init(id);
+}
+
+void uwsgi_lock_fast(struct uwsgi_lock_item *uli) {
+	sem_wait((sem_t *) uli->lock_ptr);
+	uli->pid = uwsgi.mypid;
+}
+
+void uwsgi_unlock_fast(struct uwsgi_lock_item *uli) {
+	sem_post((sem_t *) uli->lock_ptr);
+	uli->pid = 0;
+}
+
+pid_t uwsgi_lock_fast_check(struct uwsgi_lock_item *uli) {
+	if (sem_trywait((sem_t *) uli->lock_ptr) == 0) {
+		sem_post((sem_t *) uli->lock_ptr);
+		return 0;
+	}
+	return uli->pid;
+}
+
+pid_t uwsgi_rwlock_fast_check(struct uwsgi_lock_item * uli) {
+	return uwsgi_lock_fast_check(uli);
+}
+void uwsgi_rlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_fast(uli);
+}
+void uwsgi_wlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_fast(uli);
+}
+void uwsgi_rwunlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_unlock_fast(uli);
+}
+
+
+#elif defined(UWSGI_LOCK_USE_OSX_SPINLOCK)
+
+#define UWSGI_LOCK_ENGINE_NAME "OSX spinlocks"
+#define UWSGI_LOCK_SIZE		sizeof(OSSpinLock)
+#define UWSGI_RWLOCK_SIZE	sizeof(OSSpinLock)
+
+
+struct uwsgi_lock_item *uwsgi_lock_fast_init(char *id) {
+
+	struct uwsgi_lock_item *uli = uwsgi_register_lock(id, 0);
+	memset(uli->lock_ptr, 0, UWSGI_LOCK_SIZE);
+	uli->can_deadlock = 1;
+	return uli;
+}
+
+void uwsgi_lock_fast(struct uwsgi_lock_item *uli) {
+
+	OSSpinLockLock((OSSpinLock *) uli->lock_ptr);
+	uli->pid = uwsgi.mypid;
+}
+
+void uwsgi_unlock_fast(struct uwsgi_lock_item *uli) {
+
+	OSSpinLockUnlock((OSSpinLock *) uli->lock_ptr);
+	uli->pid = 0;
+}
+
+pid_t uwsgi_lock_fast_check(struct uwsgi_lock_item *uli) {
+	if (OSSpinLockTry((OSSpinLock *) uli->lock_ptr)) {
+		OSSpinLockUnlock((OSSpinLock *) uli->lock_ptr);
+		return 0;
+	}
+	return uli->pid;
+}
+
+struct uwsgi_lock_item *uwsgi_rwlock_fast_init(char *id) {
+	struct uwsgi_lock_item *uli = uwsgi_register_lock(id, 1);
+	memset(uli->lock_ptr, 0, UWSGI_LOCK_SIZE);
+	uli->can_deadlock = 1;
+	return uli;
+}
+
+void uwsgi_rlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_fast(uli);
+}
+void uwsgi_wlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_fast(uli);
+}
+
+pid_t uwsgi_rwlock_fast_check(struct uwsgi_lock_item *uli) {
+	return uwsgi_lock_fast_check(uli);
+}
+
+void uwsgi_rwunlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_unlock_fast(uli);
+}
+
+#elif defined(UWSGI_LOCK_USE_WINDOWS_MUTEX)
+
+#define UWSGI_LOCK_ENGINE_NAME "windows mutexes"
+#define UWSGI_LOCK_SIZE         sizeof(HANDLE)
+#define UWSGI_RWLOCK_SIZE       sizeof(HANDLE)
+
+
+struct uwsgi_lock_item *uwsgi_lock_fast_init(char *id) {
+
+        struct uwsgi_lock_item *uli = uwsgi_register_lock(id, 0);
+	struct _SECURITY_ATTRIBUTES sa;
+	memset(&sa, 0, sizeof(struct _SECURITY_ATTRIBUTES));
+	sa.bInheritHandle = 1;
+	uli->lock_ptr = CreateMutex(&sa, FALSE, NULL);
+        return uli;
+}
+
+void uwsgi_lock_fast(struct uwsgi_lock_item *uli) {
+	WaitForSingleObject(uli->lock_ptr, INFINITE);
+        uli->pid = uwsgi.mypid;
+}
+
+void uwsgi_unlock_fast(struct uwsgi_lock_item *uli) {
+	ReleaseMutex(uli->lock_ptr);
+        uli->pid = 0;
+}
+
+pid_t uwsgi_lock_fast_check(struct uwsgi_lock_item *uli) {
+	if (WaitForSingleObject(uli->lock_ptr, 0) == WAIT_TIMEOUT) {
+		return 0;
+	}
+        return uli->pid;
+}
+
+struct uwsgi_lock_item *uwsgi_rwlock_fast_init(char *id) {
+	return uwsgi_lock_fast_init(id);
+}
+
+void uwsgi_rlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_fast(uli);
+}
+void uwsgi_wlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_fast(uli);
+}
+
+pid_t uwsgi_rwlock_fast_check(struct uwsgi_lock_item *uli) {
+	return uwsgi_lock_fast_check(uli);
+}
+
+void uwsgi_rwunlock_fast(struct uwsgi_lock_item *uli) {
+	uwsgi_unlock_fast(uli);
+}
+
+
+#else
+
+#define uwsgi_lock_fast_init uwsgi_lock_ipcsem_init
+#define uwsgi_lock_fast_check uwsgi_lock_ipcsem_check
+#define uwsgi_lock_fast uwsgi_lock_ipcsem
+#define uwsgi_unlock_fast uwsgi_unlock_ipcsem
+
+#define uwsgi_rwlock_fast_init uwsgi_rwlock_ipcsem_init
+#define uwsgi_rwlock_fast_check uwsgi_rwlock_ipcsem_check
+
+#define uwsgi_rlock_fast uwsgi_rlock_ipcsem
+#define uwsgi_wlock_fast uwsgi_wlock_ipcsem
+#define uwsgi_rwunlock_fast uwsgi_rwunlock_ipcsem
+
+#define UWSGI_LOCK_SIZE sizeof(int)
+#define UWSGI_RWLOCK_SIZE sizeof(int)
+
+#define UWSGI_LOCK_ENGINE_NAME "ipcsem"
+
+#define UWSGI_IPCSEM_ATEXIT	1
+
+#endif
+
+struct uwsgi_lock_item *uwsgi_lock_ipcsem_init(char *id) {
+
+	// used by ftok
+	static int counter = 1;
+	union semun {
+		int val;
+		struct semid_ds *buf;
+		ushort *array;
+	} semu;
+	int semid;
+	key_t myKey;
+
+	struct uwsgi_lock_item *uli = uwsgi_register_lock(id, 0);
+
+	if (uwsgi.ftok) {
+		myKey = ftok(uwsgi.ftok, counter);
+		if (myKey < 0) {
+			uwsgi_error("ftok()");
+			exit(1);
+		}
+		counter++;
+		semid = semget(myKey, 1, IPC_CREAT | 0666);
+	}
+	else {
+		semid = semget(IPC_PRIVATE, 1, IPC_CREAT | IPC_EXCL | 0666);
+	}
+
+	if (semid < 0) {
+		uwsgi_error("semget()");
+		exit(1);
+	}
+	// do this now, to allows triggering of atexit hook in case of problems
+	memcpy(uli->lock_ptr, &semid, sizeof(int));
+
+	semu.val = 1;
+	if (semctl(semid, 0, SETVAL, semu)) {
+		uwsgi_error("semctl()");
+		exit(1);
+	}
+
+	return uli;
+}
+
+void uwsgi_lock_ipcsem(struct uwsgi_lock_item *uli) {
+
+	int semid;
+	struct sembuf sb;
+	sb.sem_num = 0;
+	sb.sem_op = -1;
+	sb.sem_flg = SEM_UNDO;
+
+	memcpy(&semid, uli->lock_ptr, sizeof(int));
+
+retry:
+	if (semop(semid, &sb, 1)) {
+		if (errno == EINTR) goto retry; 
+		uwsgi_error("semop()");
+	}
+}
+
+void uwsgi_unlock_ipcsem(struct uwsgi_lock_item *uli) {
+
+	int semid;
+	struct sembuf sb;
+	sb.sem_num = 0;
+	sb.sem_op = 1;
+	sb.sem_flg = SEM_UNDO;
+
+	memcpy(&semid, uli->lock_ptr, sizeof(int));
+
+retry:
+	if (semop(semid, &sb, 1)) {
+		if (errno == EINTR) goto retry; 
+		uwsgi_error("semop()");
+	}
+
+}
+
+struct uwsgi_lock_item *uwsgi_rwlock_ipcsem_init(char *id) {
+	return uwsgi_lock_ipcsem_init(id);
+}
+void uwsgi_rlock_ipcsem(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_ipcsem(uli);
+}
+void uwsgi_wlock_ipcsem(struct uwsgi_lock_item *uli) {
+	uwsgi_lock_ipcsem(uli);
+}
+void uwsgi_rwunlock_ipcsem(struct uwsgi_lock_item *uli) {
+	uwsgi_unlock_ipcsem(uli);
+}
+
+// ipc cannot deadlock
+pid_t uwsgi_lock_ipcsem_check(struct uwsgi_lock_item *uli) {
+	return 0;
+}
+
+void uwsgi_ipcsem_clear(void) {
+
+	struct uwsgi_lock_item *uli = uwsgi.registered_locks;
+
+	if (!uwsgi.workers)
+		goto clear;
+
+	if (uwsgi.mywid == 0)
+		goto clear;
+
+	if (uwsgi.master_process && getpid() == uwsgi.workers[0].pid)
+		goto clear;
+
+	if (!uwsgi.master_process && uwsgi.mywid == 1)
+		goto clear;
+
+	return;
+
+clear:
+
+#ifdef UWSGI_DEBUG
+	uwsgi_log("removing sysvipc semaphores...\n");
+#endif
+	while (uli) {
+		int semid = 0;
+		memcpy(&semid, uli->lock_ptr, sizeof(int));
+		if (semctl(semid, 0, IPC_RMID)) {
+			uwsgi_error("semctl()");
+		}
+		uli = uli->next;
+	}
+}
+
+
+pid_t uwsgi_rwlock_ipcsem_check(struct uwsgi_lock_item *uli) {
+	return uwsgi_lock_ipcsem_check(uli);
+}
+
+
+void uwsgi_setup_locking() {
+
+	int i;
+
+	if (uwsgi.locking_setup) return;
+
+	// use the fastest available locking
+	if (uwsgi.lock_engine) {
+		if (!strcmp(uwsgi.lock_engine, "ipcsem")) {
+			uwsgi_log_initial("lock engine: ipcsem\n");
+			atexit(uwsgi_ipcsem_clear);
+			uwsgi.lock_ops.lock_init = uwsgi_lock_ipcsem_init;
+			uwsgi.lock_ops.lock_check = uwsgi_lock_ipcsem_check;
+			uwsgi.lock_ops.lock = uwsgi_lock_ipcsem;
+			uwsgi.lock_ops.unlock = uwsgi_unlock_ipcsem;
+			uwsgi.lock_ops.rwlock_init = uwsgi_rwlock_ipcsem_init;
+			uwsgi.lock_ops.rwlock_check = uwsgi_rwlock_ipcsem_check;
+			uwsgi.lock_ops.rlock = uwsgi_rlock_ipcsem;
+			uwsgi.lock_ops.wlock = uwsgi_wlock_ipcsem;
+			uwsgi.lock_ops.rwunlock = uwsgi_rwunlock_ipcsem;
+			uwsgi.lock_size = 8;
+			uwsgi.rwlock_size = 8;
+			goto ready;
+		}
+		uwsgi_log("unable to find lock engine \"%s\"\n", uwsgi.lock_engine);
+		exit(1);
+	}
+
+	uwsgi_log_initial("lock engine: %s\n", UWSGI_LOCK_ENGINE_NAME);
+#ifdef UWSGI_IPCSEM_ATEXIT
+	atexit(uwsgi_ipcsem_clear);
+#endif
+	uwsgi.lock_ops.lock_init = uwsgi_lock_fast_init;
+	uwsgi.lock_ops.lock_check = uwsgi_lock_fast_check;
+	uwsgi.lock_ops.lock = uwsgi_lock_fast;
+	uwsgi.lock_ops.unlock = uwsgi_unlock_fast;
+	uwsgi.lock_ops.rwlock_init = uwsgi_rwlock_fast_init;
+	uwsgi.lock_ops.rwlock_check = uwsgi_rwlock_fast_check;
+	uwsgi.lock_ops.rlock = uwsgi_rlock_fast;
+	uwsgi.lock_ops.wlock = uwsgi_wlock_fast;
+	uwsgi.lock_ops.rwunlock = uwsgi_rwunlock_fast;
+	uwsgi.lock_size = UWSGI_LOCK_SIZE;
+	uwsgi.rwlock_size = UWSGI_RWLOCK_SIZE;
+
+ready:
+	// application generic lock
+	uwsgi.user_lock = uwsgi_malloc(sizeof(void *) * (uwsgi.locks + 1));
+	for (i = 0; i < uwsgi.locks + 1; i++) {
+		uwsgi.user_lock[i] = uwsgi_lock_init(uwsgi_concat2("user ", uwsgi_num2str(i)));
+	}
+
+	// event queue lock (mitigate same event on multiple queues)
+	if (uwsgi.threads > 1) {
+		pthread_mutex_init(&uwsgi.thunder_mutex, NULL);
+	}
+
+	if (uwsgi.master_process) {
+		// signal table lock
+		uwsgi.signal_table_lock = uwsgi_lock_init("signal");
+
+		// fmon table lock
+		uwsgi.fmon_table_lock = uwsgi_lock_init("filemon");
+
+		// timer table lock
+		uwsgi.timer_table_lock = uwsgi_lock_init("timer");
+
+		// probe table lock
+		uwsgi.probe_table_lock = uwsgi_lock_init("probe");
+
+		// rb_timer table lock
+		uwsgi.rb_timer_table_lock = uwsgi_lock_init("rbtimer");
+
+		// cron table lock
+		uwsgi.cron_table_lock = uwsgi_lock_init("cron");
+	}
+
+	if (uwsgi.use_thunder_lock) {
+		// process shared thunder lock
+		uwsgi.the_thunder_lock = uwsgi_lock_init("thunder");	
+	}
+
+	uwsgi.rpc_table_lock = uwsgi_lock_init("rpc");
+
+#ifdef UWSGI_SSL
+	// register locking for legions
+	struct uwsgi_legion *ul = uwsgi.legions;
+	while(ul) {
+		ul->lock = uwsgi_lock_init(uwsgi_concat2("legion_", ul->legion));
+		ul = ul->next;
+	}
+#endif
+	uwsgi.locking_setup = 1;
+}
+
+
+int uwsgi_fcntl_lock(int fd) {
+	struct flock fl;
+	fl.l_type = F_WRLCK;
+	fl.l_whence = SEEK_SET;
+	fl.l_start = 0;
+	fl.l_len = 0;
+	fl.l_pid = 0;
+
+	int ret = fcntl(fd, F_SETLKW, &fl);
+	if (ret < 0)
+		uwsgi_error("fcntl()");
+
+	return ret;
+}
+
+int uwsgi_fcntl_is_locked(int fd) {
+
+	struct flock fl;
+	fl.l_type = F_WRLCK;
+	fl.l_whence = SEEK_SET;
+	fl.l_start = 0;
+	fl.l_len = 0;
+	fl.l_pid = 0;
+
+	if (fcntl(fd, F_SETLK, &fl)) {
+		return 1;
+	}
+
+	return 0;
+
+}
+
+void uwsgi_deadlock_check(pid_t diedpid) {
+	struct uwsgi_lock_item *uli = uwsgi.registered_locks;
+	while (uli) {
+		if (!uli->can_deadlock)
+			goto nextlock;
+		pid_t locked_pid = 0;
+		if (uli->rw) {
+			locked_pid = uwsgi_rwlock_check(uli);
+		}
+		else {
+			locked_pid = uwsgi_lock_check(uli);
+		}
+		if (locked_pid == diedpid) {
+			uwsgi_log("[deadlock-detector] pid %d was holding lock %s (%p)\n", (int) diedpid, uli->id, uli->lock_ptr);
+			if (uli->rw) {
+				uwsgi_rwunlock(uli);
+			}
+			else {
+				uwsgi_unlock(uli);
+			}
+		}
+nextlock:
+		uli = uli->next;
+	}
+
+}
+
+void uwsgi_user_lock(int lock_num) {
+	uwsgi_lock(uwsgi.user_lock[lock_num]);
+}
+
+void uwsgi_user_unlock(int lock_num) {
+	uwsgi_unlock(uwsgi.user_lock[lock_num]);
+}

core/loop.c

@@ -0,0 +1,166 @@
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+struct wsgi_request *threaded_current_wsgi_req() {
+	return pthread_getspecific(uwsgi.tur_key);
+}
+struct wsgi_request *simple_current_wsgi_req() {
+	return uwsgi.wsgi_req;
+}
+
+
+void uwsgi_register_loop(char *name, void (*func) (void)) {
+
+	struct uwsgi_loop *old_loop = NULL, *loop = uwsgi.loops;
+
+	while (loop) {
+		// check if the loop engine is already registered
+		if (!strcmp(name, loop->name))
+			return;
+		old_loop = loop;
+		loop = loop->next;
+	}
+
+	loop = uwsgi_calloc(sizeof(struct uwsgi_loop));
+	loop->name = name;
+	loop->loop = func;
+
+	if (old_loop) {
+		old_loop->next = loop;
+	}
+	else {
+		uwsgi.loops = loop;
+	}
+}
+
+void *uwsgi_get_loop(char *name) {
+
+	struct uwsgi_loop *loop = uwsgi.loops;
+
+	while (loop) {
+		if (!strcmp(name, loop->name)) {
+			return loop->loop;
+		}
+		loop = loop->next;
+	}
+	return NULL;
+}
+
+/*
+
+	this is the default (simple) loop.
+
+	it will run simple_loop_run function for each spawned thread
+
+	simple_loop_run monitors sockets and signals descriptors
+	and manages them.
+
+*/
+
+void simple_loop() {
+	uwsgi_loop_cores_run(simple_loop_run);
+}
+
+void uwsgi_loop_cores_run(void *(*func) (void *)) {
+	int i;
+	for (i = 1; i < uwsgi.threads; i++) {
+		long j = i;
+		pthread_create(&uwsgi.workers[uwsgi.mywid].cores[i].thread_id, &uwsgi.threads_attr, func, (void *) j);
+	}
+	long y = 0;
+	func((void *) y);
+}
+
+void uwsgi_setup_thread_req(long core_id, struct wsgi_request *wsgi_req) {
+	int i;
+	sigset_t smask;
+
+
+	pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &i);
+	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &i);
+	pthread_setspecific(uwsgi.tur_key, (void *) wsgi_req);
+
+	if (core_id > 0) {
+		// block all signals on new threads
+		sigfillset(&smask);
+#ifdef UWSGI_DEBUG
+		sigdelset(&smask, SIGSEGV);
+#endif
+		pthread_sigmask(SIG_BLOCK, &smask, NULL);
+
+		// run per-thread socket hook
+		struct uwsgi_socket *uwsgi_sock = uwsgi.sockets;
+		while (uwsgi_sock) {
+			if (uwsgi_sock->proto_thread_fixup) {
+				uwsgi_sock->proto_thread_fixup(uwsgi_sock, core_id);
+			}
+			uwsgi_sock = uwsgi_sock->next;
+		}
+
+		for (i = 0; i < 256; i++) {
+			if (uwsgi.p[i]->init_thread) {
+				uwsgi.p[i]->init_thread(core_id);
+			}
+		}
+	}
+
+}
+
+void simple_loop_run_int(int core_id) {
+	long y = core_id;
+	simple_loop_run((void *) y);
+}
+
+void *simple_loop_run(void *arg1) {
+
+	long core_id = (long) arg1;
+
+	struct wsgi_request *wsgi_req = &uwsgi.workers[uwsgi.mywid].cores[core_id].req;
+
+	if (uwsgi.threads > 1) {
+		uwsgi_setup_thread_req(core_id, wsgi_req);
+	}
+	// initialize the main event queue to monitor sockets
+	int main_queue = event_queue_init();
+
+	uwsgi_add_sockets_to_queue(main_queue, core_id);
+
+	if (uwsgi.signal_socket > -1) {
+		event_queue_add_fd_read(main_queue, uwsgi.signal_socket);
+		event_queue_add_fd_read(main_queue, uwsgi.my_signal_socket);
+	}
+
+
+	// ok we are ready, let's start managing requests and signals
+	while (uwsgi.workers[uwsgi.mywid].manage_next_request) {
+
+		wsgi_req_setup(wsgi_req, core_id, NULL);
+
+		if (wsgi_req_accept(main_queue, wsgi_req)) {
+			continue;
+		}
+
+		if (wsgi_req_recv(main_queue, wsgi_req)) {
+			uwsgi_destroy_request(wsgi_req);
+			continue;
+		}
+
+		uwsgi_close_request(wsgi_req);
+	}
+
+	// end of the loop
+	if (uwsgi.workers[uwsgi.mywid].destroy && uwsgi.workers[0].pid > 0) {
+#ifdef __APPLE__
+		kill(uwsgi.workers[0].pid, SIGTERM);
+#else
+		if (uwsgi.propagate_touch) {
+			kill(uwsgi.workers[0].pid, SIGHUP);
+		}
+		else {
+			gracefully_kill(0);
+		}
+#endif
+	}
+	return NULL;
+}

core/master.c

@@ -0,0 +1,924 @@
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+void uwsgi_restore_auto_snapshot(int signum) {
+
+	if (uwsgi.workers[1].snapshot > 0) {
+		uwsgi.restore_snapshot = 1;
+	}
+	else {
+		uwsgi_log("[WARNING] no snapshot available\n");
+	}
+
+}
+
+void uwsgi_block_signal(int signum) {
+	sigset_t smask;
+	sigemptyset(&smask);
+	sigaddset(&smask, signum);
+	if (sigprocmask(SIG_BLOCK, &smask, NULL)) {
+		uwsgi_error("sigprocmask()");
+	}
+}
+
+void uwsgi_unblock_signal(int signum) {
+	sigset_t smask;
+	sigemptyset(&smask);
+	sigaddset(&smask, signum);
+	if (sigprocmask(SIG_UNBLOCK, &smask, NULL)) {
+		uwsgi_error("sigprocmask()");
+	}
+}
+
+void uwsgi_master_manage_udp(int udp_fd) {
+	struct sockaddr_in udp_client;
+	char udp_client_addr[16];
+	int i;
+
+	socklen_t udp_len = sizeof(udp_client);
+	ssize_t rlen = recvfrom(udp_fd, uwsgi.wsgi_req->buffer, uwsgi.buffer_size, 0, (struct sockaddr *) &udp_client, &udp_len);
+
+	if (rlen < 0) {
+		uwsgi_error("recvfrom()");
+	}
+	else if (rlen > 0) {
+
+		memset(udp_client_addr, 0, 16);
+		if (inet_ntop(AF_INET, &udp_client.sin_addr.s_addr, udp_client_addr, 16)) {
+			if (uwsgi.wsgi_req->buffer[0] == UWSGI_MODIFIER_MULTICAST_ANNOUNCE) {
+			}
+			else if (uwsgi.wsgi_req->buffer[0] == 0x30 && uwsgi.snmp) {
+				manage_snmp(udp_fd, (uint8_t *) uwsgi.wsgi_req->buffer, rlen, &udp_client);
+			}
+			else {
+
+				// loop the various udp manager until one returns true
+				int udp_managed = 0;
+				for (i = 0; i < 256; i++) {
+					if (uwsgi.p[i]->manage_udp) {
+						if (uwsgi.p[i]->manage_udp(udp_client_addr, udp_client.sin_port, uwsgi.wsgi_req->buffer, rlen)) {
+							udp_managed = 1;
+							break;
+						}
+					}
+				}
+
+				// else a simple udp logger
+				if (!udp_managed) {
+					uwsgi_log("[udp:%s:%d] %.*s", udp_client_addr, ntohs(udp_client.sin_port), (int) rlen, uwsgi.wsgi_req->buffer);
+				}
+			}
+		}
+		else {
+			uwsgi_error("inet_ntop()");
+		}
+
+	}
+}
+
+void uwsgi_master_manage_emperor() {
+	char byte;
+	ssize_t rlen = read(uwsgi.emperor_fd, &byte, 1);
+	if (rlen > 0) {
+		uwsgi_log_verbose("received message %d from emperor\n", byte);
+		// remove me
+		if (byte == 0) {
+			close(uwsgi.emperor_fd);
+			if (!uwsgi.status.brutally_reloading)
+				kill_them_all(0);
+		}
+		// reload me
+		else if (byte == 1) {
+			// un-lazy the stack to trigger a real reload
+			uwsgi.lazy = 0;
+			uwsgi_block_signal(SIGHUP);
+			grace_them_all(0);
+			uwsgi_unblock_signal(SIGHUP);
+		}
+	}
+	else {
+		uwsgi_log("lost connection with my emperor !!!\n");
+		close(uwsgi.emperor_fd);
+		if (!uwsgi.status.brutally_reloading)
+			kill_them_all(0);
+		sleep(2);
+		exit(1);
+	}
+
+}
+
+
+void uwsgi_master_restore_snapshot() {
+	int i, waitpid_status;
+	uwsgi_log("[snapshot] restoring workers...\n");
+	for (i = 1; i <= uwsgi.numproc; i++) {
+		if (uwsgi.workers[i].pid == 0)
+			continue;
+		kill(uwsgi.workers[i].pid, SIGKILL);
+		if (waitpid(uwsgi.workers[i].pid, &waitpid_status, 0) < 0) {
+			uwsgi_error("waitpid()");
+		}
+		if (uwsgi.auto_snapshot > 0 && i > uwsgi.auto_snapshot) {
+			uwsgi.workers[i].pid = 0;
+			uwsgi.workers[i].snapshot = 0;
+		}
+		else {
+			uwsgi.workers[i].pid = uwsgi.workers[i].snapshot;
+			uwsgi.workers[i].snapshot = 0;
+			kill(uwsgi.workers[i].pid, SIGURG);
+			uwsgi_log("Restored uWSGI worker %d (pid: %d)\n", i, (int) uwsgi.workers[i].pid);
+		}
+	}
+
+	uwsgi.restore_snapshot = 0;
+}
+
+void suspend_resume_them_all(int signum) {
+
+	int i;
+	int suspend = 0;
+
+	if (uwsgi.workers[0].suspended == 1) {
+		uwsgi_log_verbose("*** (SIGTSTP received) resuming workers ***\n");
+		uwsgi.workers[0].suspended = 0;
+	}
+	else {
+		uwsgi_log_verbose("*** PAUSE (press start to resume, if you do not have a joypad send SIGTSTP) ***\n");
+		suspend = 1;
+		uwsgi.workers[0].suspended = 1;
+	}
+
+	// subscribe/unsubscribe if needed
+	uwsgi_subscribe_all(suspend, 1);
+
+	for (i = 1; i <= uwsgi.numproc; i++) {
+		uwsgi.workers[i].suspended = suspend;
+		if (uwsgi.workers[i].pid > 0) {
+			if (kill(uwsgi.workers[i].pid, SIGTSTP)) {
+				uwsgi_error("kill()");
+			}
+		}
+	}
+}
+
+
+void uwsgi_master_check_mercy() {
+
+	int i;
+
+	for (i = 1; i <= uwsgi.numproc; i++) {
+		if (uwsgi.workers[i].pid > 0 && uwsgi.workers[i].cursed_at) {
+			if (uwsgi_now() > uwsgi.workers[i].no_mercy_at) {
+				uwsgi_log_verbose("worker %d (pid: %d) is taking too much time to die...NO MERCY !!!\n", i, uwsgi.workers[i].pid);
+				// yes that look strangem but we avoid callign it again if we skip waitpid() call below
+				uwsgi_curse(i, SIGKILL);
+			}
+		}
+	}
+}
+
+
+void expire_rb_timeouts(struct uwsgi_rbtree *tree) {
+
+	uint64_t current = (uint64_t) uwsgi_now();
+	struct uwsgi_rb_timer *urbt;
+	struct uwsgi_signal_rb_timer *usrbt;
+
+	for (;;) {
+
+		urbt = uwsgi_min_rb_timer(tree, NULL);
+
+		if (urbt == NULL)
+			return;
+
+		if (urbt->value <= current) {
+			// remove the timeout and add another
+			usrbt = (struct uwsgi_signal_rb_timer *) urbt->data;
+			uwsgi_del_rb_timer(tree, urbt);
+			free(urbt);
+			usrbt->iterations_done++;
+			uwsgi_route_signal(usrbt->sig);
+			if (!usrbt->iterations || usrbt->iterations_done < usrbt->iterations) {
+				usrbt->uwsgi_rb_timer = uwsgi_add_rb_timer(tree, uwsgi_now() + usrbt->value, usrbt);
+			}
+			continue;
+		}
+
+		break;
+	}
+}
+
+int uwsgi_get_tcp_info(int fd) {
+
+#if defined(__linux__) || defined(__FreeBSD__)
+	socklen_t tis = sizeof(struct tcp_info);
+
+	if (!getsockopt(fd, IPPROTO_TCP, TCP_INFO, &uwsgi.shared->ti, &tis)) {
+
+		// checks for older kernels
+#if defined(__linux__)
+		if (!uwsgi.shared->ti.tcpi_sacked) {
+#elif defined(__FreeBSD__)
+		if (!uwsgi.shared->ti.__tcpi_sacked) {
+#endif
+                        return 0;
+                }
+
+#if defined(__linux__)
+		uwsgi.shared->load = (uint64_t) uwsgi.shared->ti.tcpi_unacked;
+		uwsgi.shared->max_load = (uint64_t) uwsgi.shared->ti.tcpi_sacked;
+#elif defined(__FreeBSD__)
+		uwsgi.shared->load = (uint64_t) uwsgi.shared->ti.__tcpi_unacked;
+		uwsgi.shared->max_load = (uint64_t) uwsgi.shared->ti.__tcpi_sacked;
+#endif
+
+		uwsgi.shared->options[UWSGI_OPTION_BACKLOG_STATUS] = uwsgi.shared->load;
+		if (uwsgi.vassal_sos_backlog > 0 && uwsgi.has_emperor) {
+			if (uwsgi.shared->load >= (uint64_t) uwsgi.vassal_sos_backlog) {
+				// ask emperor for help
+				char byte = 30;
+				if (write(uwsgi.emperor_fd, &byte, 1) != 1) {
+					uwsgi_error("write()");
+				}
+				else {
+					uwsgi_log("asking emperor for reinforcements (backlog: %llu)...\n", (unsigned long long ) uwsgi.shared->load);
+				}
+			}
+		}
+		if (uwsgi.shared->load >= uwsgi.shared->max_load) {
+			uwsgi_log_verbose("*** uWSGI listen queue of socket %d full !!! (%llu/%llu) ***\n", fd, (unsigned long long ) uwsgi.shared->load, (unsigned long long ) uwsgi.shared->max_load);
+			uwsgi.shared->options[UWSGI_OPTION_BACKLOG_ERRORS]++;
+		}
+
+		return uwsgi.shared->load;
+	}
+#endif
+
+	return 0;
+}
+
+
+#ifdef __linux__
+#include <linux/sockios.h>
+
+#ifdef UNBIT
+#define SIOBKLGQ 0x8908
+#endif
+
+#ifdef SIOBKLGQ
+
+int get_linux_unbit_SIOBKLGQ(int fd) {
+
+	int queue = 0;
+	if (ioctl(fd, SIOBKLGQ, &queue) >= 0) {
+		uwsgi.shared->load = queue;
+		uwsgi.shared->options[UWSGI_OPTION_BACKLOG_STATUS] = queue;
+		if (queue >= uwsgi.listen_queue) {
+			uwsgi_log_verbose("*** uWSGI listen queue of socket %d full !!! (%d/%d) ***\n", fd, queue, uwsgi.listen_queue);
+			uwsgi.shared->options[UWSGI_OPTION_BACKLOG_ERRORS]++;
+		}
+		return queue;
+	}
+
+	return 0;
+
+}
+#endif
+#endif
+
+
+int master_loop(char **argv, char **environ) {
+
+	struct timeval last_respawn;
+	int last_respawn_rate = 0;
+
+	pid_t diedpid;
+	int waitpid_status;
+
+	time_t now = 0;
+
+	int i = 0;
+	int rlen;
+
+	int check_interval = 1;
+
+	struct uwsgi_rb_timer *min_timeout;
+	struct uwsgi_rbtree *rb_timers = uwsgi_init_rb_timer();
+
+
+	if (uwsgi.procname_master) {
+		uwsgi_set_processname(uwsgi.procname_master);
+	}
+	else if (uwsgi.procname) {
+		uwsgi_set_processname(uwsgi.procname);
+	}
+	else if (uwsgi.auto_procname) {
+		uwsgi_set_processname("uWSGI master");
+	}
+
+
+	uwsgi.current_time = uwsgi_now();
+
+	uwsgi_unix_signal(SIGTSTP, suspend_resume_them_all);
+	uwsgi_unix_signal(SIGHUP, grace_them_all);
+	if (uwsgi.die_on_term) {
+		uwsgi_unix_signal(SIGTERM, kill_them_all);
+		uwsgi_unix_signal(SIGQUIT, reap_them_all);
+	}
+	else {
+		uwsgi_unix_signal(SIGTERM, reap_them_all);
+		uwsgi_unix_signal(SIGQUIT, kill_them_all);
+	}
+	uwsgi_unix_signal(SIGINT, kill_them_all);
+	uwsgi_unix_signal(SIGUSR1, stats);
+	if (uwsgi.auto_snapshot) {
+		uwsgi_unix_signal(SIGURG, uwsgi_restore_auto_snapshot);
+	}
+
+	atexit(uwsgi_master_cleanup_hooks);
+
+	uwsgi.master_queue = event_queue_init();
+
+	/* route signals to workers... */
+#ifdef UWSGI_DEBUG
+	uwsgi_log("adding %d to signal poll\n", uwsgi.shared->worker_signal_pipe[0]);
+#endif
+	event_queue_add_fd_read(uwsgi.master_queue, uwsgi.shared->worker_signal_pipe[0]);
+
+	if (uwsgi.spoolers) {
+		event_queue_add_fd_read(uwsgi.master_queue, uwsgi.shared->spooler_signal_pipe[0]);
+	}
+
+	if (uwsgi.mules_cnt > 0) {
+		event_queue_add_fd_read(uwsgi.master_queue, uwsgi.shared->mule_signal_pipe[0]);
+	}
+
+	if (uwsgi.log_master) {
+		uwsgi.log_master_buf = uwsgi_malloc(uwsgi.log_master_bufsize);
+		if (!uwsgi.threaded_logger) {
+#ifdef UWSGI_DEBUG
+			uwsgi_log("adding %d to master logging\n", uwsgi.shared->worker_log_pipe[0]);
+#endif
+			event_queue_add_fd_read(uwsgi.master_queue, uwsgi.shared->worker_log_pipe[0]);
+			if (uwsgi.req_log_master) {
+				event_queue_add_fd_read(uwsgi.master_queue, uwsgi.shared->worker_req_log_pipe[0]);
+			}
+		}
+		else {
+			uwsgi_threaded_logger_spawn();
+		}
+
+	}
+
+#ifdef UWSGI_SSL
+	uwsgi_start_legions();
+#endif
+
+	uwsgi_cache_start_sweepers();
+	uwsgi_cache_start_sync_servers();
+
+	uwsgi.wsgi_req->buffer = uwsgi.workers[0].cores[0].buffer;
+
+	if (uwsgi.has_emperor) {
+		event_queue_add_fd_read(uwsgi.master_queue, uwsgi.emperor_fd);
+	}
+
+	if (uwsgi.zerg_server) {
+		uwsgi.zerg_server_fd = bind_to_unix(uwsgi.zerg_server, uwsgi.listen_queue, 0, 0);
+		event_queue_add_fd_read(uwsgi.master_queue, uwsgi.zerg_server_fd);
+		uwsgi_log("*** Zerg server enabled on %s ***\n", uwsgi.zerg_server);
+	}
+
+	if (uwsgi.stats) {
+		char *tcp_port = strchr(uwsgi.stats, ':');
+		if (tcp_port) {
+			// disable deferred accept for this socket
+			int current_defer_accept = uwsgi.no_defer_accept;
+			uwsgi.no_defer_accept = 1;
+			uwsgi.stats_fd = bind_to_tcp(uwsgi.stats, uwsgi.listen_queue, tcp_port);
+			uwsgi.no_defer_accept = current_defer_accept;
+		}
+		else {
+			uwsgi.stats_fd = bind_to_unix(uwsgi.stats, uwsgi.listen_queue, uwsgi.chmod_socket, uwsgi.abstract_socket);
+		}
+
+		event_queue_add_fd_read(uwsgi.master_queue, uwsgi.stats_fd);
+		uwsgi_log("*** Stats server enabled on %s fd: %d ***\n", uwsgi.stats, uwsgi.stats_fd);
+	}
+
+
+	if (uwsgi.stats_pusher_instances) {
+		if (!uwsgi_thread_new(uwsgi_stats_pusher_loop)) {
+			uwsgi_log("!!! unable to spawn stats pusher thread !!!\n");
+			exit(1);
+		}
+	}
+
+	if (uwsgi.udp_socket) {
+		uwsgi.udp_fd = bind_to_udp(uwsgi.udp_socket, 0, 0);
+		if (uwsgi.udp_fd < 0) {
+			uwsgi_log("unable to bind to udp socket. SNMP services will be disabled.\n");
+		}
+		else {
+			uwsgi_log("UDP server enabled.\n");
+			event_queue_add_fd_read(uwsgi.master_queue, uwsgi.udp_fd);
+		}
+	}
+
+	uwsgi.snmp_fd = uwsgi_setup_snmp();
+
+	if (uwsgi.status.is_cheap) {
+		uwsgi_add_sockets_to_queue(uwsgi.master_queue, -1);
+		for (i = 1; i <= uwsgi.numproc; i++) {
+			uwsgi.workers[i].cheaped = 1;
+		}
+		uwsgi_log("cheap mode enabled: waiting for socket connection...\n");
+	}
+
+
+	// spawn mules
+	for (i = 0; i < uwsgi.mules_cnt; i++) {
+		size_t mule_patch_size = 0;
+		uwsgi.mules[i].patch = uwsgi_string_get_list(&uwsgi.mules_patches, i, &mule_patch_size);
+		uwsgi_mule(i + 1);
+	}
+
+	// spawn gateways
+	for (i = 0; i < ushared->gateways_cnt; i++) {
+		if (ushared->gateways[i].pid == 0) {
+			gateway_respawn(i);
+		}
+	}
+
+	// spawn daemons
+	uwsgi_daemons_spawn_all();
+
+	// first subscription
+	uwsgi_subscribe_all(0, 1);
+
+	// sync the cache store if needed
+	uwsgi_cache_sync_all();
+
+	if (uwsgi.queue_store && uwsgi.queue_filesize) {
+		if (msync(uwsgi.queue_header, uwsgi.queue_filesize, MS_ASYNC)) {
+			uwsgi_error("msync()");
+		}
+	}
+
+	// update touches timestamps
+	uwsgi_check_touches(uwsgi.touch_reload);
+	uwsgi_check_touches(uwsgi.touch_logrotate);
+	uwsgi_check_touches(uwsgi.touch_logreopen);
+	uwsgi_check_touches(uwsgi.touch_chain_reload);
+	uwsgi_check_touches(uwsgi.touch_workers_reload);
+	uwsgi_check_touches(uwsgi.touch_gracefully_stop);
+
+	// setup cheaper algos (can be stacked)
+	uwsgi.cheaper_algo = uwsgi_cheaper_algo_spare;
+	if (uwsgi.requested_cheaper_algo) {
+		uwsgi.cheaper_algo = NULL;
+		struct uwsgi_cheaper_algo *uca = uwsgi.cheaper_algos;
+		while (uca) {
+			if (!strcmp(uca->name, uwsgi.requested_cheaper_algo)) {
+				uwsgi.cheaper_algo = uca->func;
+				break;
+			}
+			uca = uca->next;
+		}
+
+		if (!uwsgi.cheaper_algo) {
+			uwsgi_log("unable to find requested cheaper algorithm, falling back to spare\n");
+			uwsgi.cheaper_algo = uwsgi_cheaper_algo_spare;
+		}
+
+	}
+
+	// here really starts the master loop
+
+	for (;;) {
+		//uwsgi_log("uwsgi.ready_to_reload %d %d\n", uwsgi.ready_to_reload, uwsgi.numproc);
+
+		// run master_cycle hook for every plugin
+		for (i = 0; i < uwsgi.gp_cnt; i++) {
+			if (uwsgi.gp[i]->master_cycle) {
+				uwsgi.gp[i]->master_cycle();
+			}
+		}
+		for (i = 0; i < 256; i++) {
+			if (uwsgi.p[i]->master_cycle) {
+				uwsgi.p[i]->master_cycle();
+			}
+		}
+
+		// check for death (before reload !!!)
+		uwsgi_master_check_death();
+		// check for realod
+		if (uwsgi_master_check_reload(argv)) {
+			return -1;
+		}
+
+		// check chain reload
+		uwsgi_master_check_chain();
+
+		// check if some worker is taking too much to die...
+		uwsgi_master_check_mercy();
+
+		// check for daemons (smart and dumb)
+		uwsgi_daemons_smart_check();
+
+
+		if (uwsgi.respawn_snapshots) {
+			for (i = 1; i <= uwsgi.respawn_snapshots; i++) {
+				if (uwsgi_respawn_worker(i))
+					return 0;
+			}
+
+			uwsgi.respawn_snapshots = 0;
+		}
+
+		if (uwsgi.restore_snapshot) {
+			uwsgi_master_restore_snapshot();
+			continue;
+		}
+
+		// cheaper management
+		if (uwsgi.cheaper && !uwsgi.status.is_cheap && !uwsgi_instance_is_reloading && !uwsgi_instance_is_dying && !uwsgi.workers[0].suspended) {
+			if (!uwsgi_calc_cheaper())
+				return 0;
+		}
+
+
+		// check if someone is dead
+		diedpid = waitpid(WAIT_ANY, &waitpid_status, WNOHANG);
+		if (diedpid == -1) {
+			if (errno == ECHILD) {
+				// something did not work as expected, just assume all has been cleared
+				uwsgi_master_commit_status();
+				diedpid = 0;
+			}
+			else {
+				uwsgi_error("waitpid()");
+				/* here is better to reload all the uWSGI stack */
+				uwsgi_log("something horrible happened...\n");
+				reap_them_all(0);
+				exit(1);
+			}
+		}
+
+		// no one died just run all of the standard master tasks
+		if (diedpid == 0) {
+
+			/* all processes ok, doing status scan after N seconds */
+			check_interval = uwsgi.shared->options[UWSGI_OPTION_MASTER_INTERVAL];
+			if (!check_interval)
+				check_interval = 1;
+
+
+			// add unregistered file monitors
+			// locking is not needed as monitors can only increase
+			for (i = 0; i < ushared->files_monitored_cnt; i++) {
+				if (!ushared->files_monitored[i].registered) {
+					ushared->files_monitored[i].fd = event_queue_add_file_monitor(uwsgi.master_queue, ushared->files_monitored[i].filename, &ushared->files_monitored[i].id);
+					ushared->files_monitored[i].registered = 1;
+				}
+			}
+
+
+			// add unregistered timers
+			// locking is not needed as timers can only increase
+			for (i = 0; i < ushared->timers_cnt; i++) {
+				if (!ushared->timers[i].registered) {
+					ushared->timers[i].fd = event_queue_add_timer(uwsgi.master_queue, &ushared->timers[i].id, ushared->timers[i].value);
+					ushared->timers[i].registered = 1;
+				}
+			}
+
+			// add unregistered rb_timers
+			// locking is not needed as rb_timers can only increase
+			for (i = 0; i < ushared->rb_timers_cnt; i++) {
+				if (!ushared->rb_timers[i].registered) {
+					ushared->rb_timers[i].uwsgi_rb_timer = uwsgi_add_rb_timer(rb_timers, uwsgi_now() + ushared->rb_timers[i].value, &ushared->rb_timers[i]);
+					ushared->rb_timers[i].registered = 1;
+				}
+			}
+
+			int interesting_fd = -1;
+
+			if (ushared->rb_timers_cnt > 0) {
+				min_timeout = uwsgi_min_rb_timer(rb_timers, NULL);
+				if (min_timeout == NULL) {
+					check_interval = uwsgi.shared->options[UWSGI_OPTION_MASTER_INTERVAL];
+				}
+				else {
+					check_interval = min_timeout->value - uwsgi_now();
+					if (check_interval <= 0) {
+						expire_rb_timeouts(rb_timers);
+						check_interval = 0;
+					}
+				}
+			}
+
+			// wait for event
+			rlen = event_queue_wait(uwsgi.master_queue, check_interval, &interesting_fd);
+
+			if (rlen == 0) {
+				if (ushared->rb_timers_cnt > 0) {
+					expire_rb_timeouts(rb_timers);
+				}
+			}
+
+
+			// check uwsgi-cron table
+			if (ushared->cron_cnt) {
+				uwsgi_manage_signal_cron(uwsgi_now());
+			}
+
+			if (uwsgi.crons) {
+				uwsgi_manage_command_cron(uwsgi_now());
+			}
+
+
+			// check for probes
+			if (ushared->probes_cnt > 0) {
+				uwsgi_lock(uwsgi.probe_table_lock);
+				for (i = 0; i < ushared->probes_cnt; i++) {
+					if (interesting_fd == -1) {
+						// increment cycles
+						ushared->probes[i].cycles++;
+					}
+					if (ushared->probes[i].func(interesting_fd, &ushared->probes[i])) {
+						uwsgi_route_signal(ushared->probes[i].sig);
+					}
+				}
+				uwsgi_unlock(uwsgi.probe_table_lock);
+			}
+
+			// some event returned
+			if (rlen > 0) {
+				// if the following function returns -1, a new worker has just spawned
+				if (uwsgi_master_manage_events(interesting_fd)) {
+					return 0;
+				}
+			}
+
+			now = uwsgi_now();
+			if (now - uwsgi.current_time < 1) {
+				continue;
+			}
+			uwsgi.current_time = now;
+
+			// checking logsize
+			if (uwsgi.logfile) {
+				uwsgi_check_logrotate();
+			}
+
+			// this will be incremented at (more or less) regular intervals
+			uwsgi.master_cycles++;
+
+			// recalculate requests counter on race conditions risky configurations
+			// a bit of inaccuracy is better than locking;)
+			uwsgi_master_fix_request_counters();
+
+			// check for idle
+			uwsgi_master_check_idle();
+
+			check_interval = uwsgi.shared->options[UWSGI_OPTION_MASTER_INTERVAL];
+			if (!check_interval)
+				check_interval = 1;
+
+
+			// get listen_queue status
+			struct uwsgi_socket *uwsgi_sock = uwsgi.sockets;
+			while (uwsgi_sock) {
+				if (uwsgi_sock->family == AF_INET) {
+					uwsgi_sock->queue = uwsgi_get_tcp_info(uwsgi_sock->fd);
+				}
+#ifdef __linux__
+#ifdef SIOBKLGQ
+				else if (uwsgi_sock->family == AF_UNIX) {
+					uwsgi_sock->queue = get_linux_unbit_SIOBKLGQ(uwsgi_sock->fd);
+				}
+#endif
+#endif
+				uwsgi_sock = uwsgi_sock->next;
+			}
+
+			// check if some worker has to die (harakiri, evil checks...)
+			uwsgi_master_check_workers_deadline();
+
+			uwsgi_master_check_gateways_deadline();
+			uwsgi_master_check_mules_deadline();
+			uwsgi_master_check_spoolers_deadline();
+
+#ifdef __linux__
+#ifdef MADV_MERGEABLE
+			if (uwsgi.linux_ksm > 0 && (uwsgi.master_cycles % uwsgi.linux_ksm) == 0) {
+				uwsgi_linux_ksm_map();
+			}
+#endif
+#endif
+
+			// resubscribe every 10 cycles by default
+			if (( (uwsgi.subscriptions || uwsgi.subscriptions2) && ((uwsgi.master_cycles % uwsgi.subscribe_freq) == 0 || uwsgi.master_cycles == 1)) && !uwsgi_instance_is_reloading && !uwsgi_instance_is_dying && !uwsgi.workers[0].suspended) {
+				uwsgi_subscribe_all(0, 0);
+			}
+
+			uwsgi_cache_sync_all();
+
+			if (uwsgi.queue_store && uwsgi.queue_filesize && uwsgi.queue_store_sync && ((uwsgi.master_cycles % uwsgi.queue_store_sync) == 0)) {
+				if (msync(uwsgi.queue_header, uwsgi.queue_filesize, MS_ASYNC)) {
+					uwsgi_error("msync()");
+				}
+			}
+
+			// check touch_reload
+			if (!uwsgi_instance_is_reloading && !uwsgi_instance_is_dying) {
+				char *touched = uwsgi_check_touches(uwsgi.touch_reload);
+				if (touched) {
+					uwsgi_log_verbose("*** %s has been touched... grace them all !!! ***\n", touched);
+					uwsgi_block_signal(SIGHUP);
+					grace_them_all(0);
+					uwsgi_unblock_signal(SIGHUP);
+					continue;
+				}
+				touched = uwsgi_check_touches(uwsgi.touch_workers_reload);
+				if (touched) {
+                                        uwsgi_log_verbose("*** %s has been touched... workers reload !!! ***\n", touched);
+					uwsgi_block_signal(SIGHUP);
+					for(i=1;i<=uwsgi.numproc;i++) {
+						if (uwsgi.workers[i].pid > 0) {
+							uwsgi_curse(i, SIGHUP);
+						}
+					}
+					uwsgi_unblock_signal(SIGHUP);
+                                        continue;
+                                }
+				touched = uwsgi_check_touches(uwsgi.touch_chain_reload);
+				if (touched) {
+					if (uwsgi.status.chain_reloading == 0) {
+                                        	uwsgi_log_verbose("*** %s has been touched... chain reload !!! ***\n", touched);
+						uwsgi.status.chain_reloading = 1;
+					}
+					else {
+                                        	uwsgi_log_verbose("*** %s has been touched... but chain reload is already running ***\n", touched);
+					}
+				}
+			}
+
+			continue;
+
+		}
+
+		// no one died
+		if (diedpid <= 0)
+			continue;
+
+		// check for deadlocks first
+		uwsgi_deadlock_check(diedpid);
+
+		// reload gateways and daemons only on normal workflow (+outworld status)
+		if (!uwsgi_instance_is_reloading && !uwsgi_instance_is_dying) {
+
+			if (uwsgi_master_check_emperor_death(diedpid)) continue;
+			if (uwsgi_master_check_spoolers_death(diedpid)) continue;
+			if (uwsgi_master_check_mules_death(diedpid)) continue;
+			if (uwsgi_master_check_gateways_death(diedpid)) continue;
+			if (uwsgi_master_check_daemons_death(diedpid)) continue;
+		}
+
+
+		/* What happens here ?
+
+		   case 1) the diedpid is not a worker, report it and continue
+		   case 2) the diedpid is a worker and we are not in a reload procedure -> reload it
+		   case 3) the diedpid is a worker and we are in graceful reload -> uwsgi.ready_to_reload++ and continue
+		   case 3) the diedpid is a worker and we are in brutal reload -> uwsgi.ready_to_die++ and continue
+
+
+		 */
+
+		int thewid = find_worker_id(diedpid);
+		if (thewid <= 0) {
+			// check spooler, mules, gateways and daemons
+			struct uwsgi_spooler *uspool = uwsgi.spoolers;
+			while (uspool) {
+				if (uspool->pid > 0 && diedpid == uspool->pid) {
+					uwsgi_log("spooler (pid: %d) annihilated\n", (int) diedpid);
+					goto next;
+				}
+				uspool = uspool->next;
+			}
+
+			for (i = 0; i < uwsgi.mules_cnt; i++) {
+				if (uwsgi.mules[i].pid == diedpid) {
+					uwsgi_log("mule %d (pid: %d) annihilated\n", i + 1, (int) diedpid);
+					goto next;
+				}
+			}
+
+			for (i = 0; i < ushared->gateways_cnt; i++) {
+				if (ushared->gateways[i].pid == diedpid) {
+					uwsgi_log("gateway %d (%s, pid: %d) annihilated\n", i + 1, ushared->gateways[i].fullname, (int) diedpid);
+					goto next;
+				}
+			}
+
+			if (uwsgi_daemon_check_pid_death(diedpid))
+				goto next;
+
+			if (WIFEXITED(waitpid_status)) {
+				uwsgi_log("subprocess %d exited with code %d\n", (int) diedpid, WEXITSTATUS(waitpid_status));
+			}
+			else if (WIFSIGNALED(waitpid_status)) {
+				uwsgi_log("subprocess %d exited by signal %d\n", (int) diedpid, WTERMSIG(waitpid_status));
+			}
+			else if (WIFSTOPPED(waitpid_status)) {
+				uwsgi_log("subprocess %d stopped\n", (int) diedpid);
+			}
+next:
+			continue;
+		}
+
+
+		// ok a worker died...
+		uwsgi.workers[thewid].pid = 0;
+		// only to be safe :P
+		uwsgi.workers[thewid].harakiri = 0;
+
+		// ok, if we are reloading or dying, just continue the master loop
+		// as soon as all of the workers have pid == 0, the action (exit, or reload) is triggered
+		if (uwsgi_instance_is_reloading || uwsgi_instance_is_dying) {
+			uwsgi_log("worker %d buried after %d seconds\n", thewid, (int) (uwsgi_now()-uwsgi.workers[thewid].cursed_at));
+			uwsgi.workers[thewid].cursed_at = 0;
+			continue;
+		}
+
+		// if we are stopping workers, just end here
+
+		if (WIFEXITED(waitpid_status) && WEXITSTATUS(waitpid_status) == UWSGI_FAILED_APP_CODE) {
+			uwsgi_log("OOPS ! failed loading app in worker %d (pid %d) :( trying again...\n", thewid, (int) diedpid);
+		}
+		else if (WIFEXITED(waitpid_status) && WEXITSTATUS(waitpid_status) == UWSGI_DE_HIJACKED_CODE) {
+			uwsgi_log("...restoring worker %d (pid: %d)...\n", thewid, (int) diedpid);
+		}
+		else if (WIFEXITED(waitpid_status) && WEXITSTATUS(waitpid_status) == UWSGI_EXCEPTION_CODE) {
+			uwsgi_log("... monitored exception detected, respawning worker %d (pid: %d)...\n", thewid, (int) diedpid);
+		}
+		else if (WIFEXITED(waitpid_status) && WEXITSTATUS(waitpid_status) == UWSGI_QUIET_CODE) {
+			// noop
+		}
+		else if (uwsgi.workers[thewid].manage_next_request) {
+			if (WIFSIGNALED(waitpid_status)) {
+				uwsgi_log("DAMN ! worker %d (pid: %d) died, killed by signal %d :( trying respawn ...\n", thewid, (int) diedpid, (int) WTERMSIG(waitpid_status));
+			}
+			else {
+				uwsgi_log("DAMN ! worker %d (pid: %d) died :( trying respawn ...\n", thewid, (int) diedpid);
+			}
+		}
+		else if (uwsgi.workers[thewid].cursed_at > 0) {
+			uwsgi_log("worker %d killed successfully (pid: %d)\n", thewid, (int) diedpid);
+		}
+		// manage_next_request is zero, but killed by signal...
+		else if (WIFSIGNALED(waitpid_status)) {
+			uwsgi_log("DAMN ! worker %d (pid: %d) MISTERIOUSLY killed by signal %d :( trying respawn ...\n", thewid, (int) diedpid, (int) WTERMSIG(waitpid_status));
+		}
+
+		if (uwsgi.workers[thewid].cheaped == 1) {
+			uwsgi_log("uWSGI worker %d cheaped.\n", thewid);
+			continue;
+		}
+
+		// avoid fork bombing
+		gettimeofday(&last_respawn, NULL);
+		if (last_respawn.tv_sec <= uwsgi.respawn_delta + check_interval) {
+			last_respawn_rate++;
+			if (last_respawn_rate > uwsgi.numproc) {
+				if (uwsgi.forkbomb_delay > 0) {
+					uwsgi_log("worker respawning too fast !!! i have to sleep a bit (%d seconds)...\n", uwsgi.forkbomb_delay);
+					/* use --forkbomb-delay 0 to disable sleeping */
+					sleep(uwsgi.forkbomb_delay);
+				}
+				last_respawn_rate = 0;
+			}
+		}
+		else {
+			last_respawn_rate = 0;
+		}
+		gettimeofday(&last_respawn, NULL);
+		uwsgi.respawn_delta = last_respawn.tv_sec;
+
+		// are we chain reloading it ?
+		if (uwsgi.status.chain_reloading == thewid) {
+			uwsgi.status.chain_reloading++;
+		}
+
+		// respawn the worker (if needed)
+		if (uwsgi_respawn_worker(thewid))
+			return 0;
+
+		// end of the loop
+	}
+
+	// never here
+}

core/master_checks.c

@@ -0,0 +1,278 @@
+#include <uwsgi.h>
+
+extern struct uwsgi_server uwsgi;
+
+// check if all of the workers are dead and exit uWSGI
+void uwsgi_master_check_death() {
+	if (uwsgi_instance_is_dying) {
+		int i;
+		for(i=1;i<=uwsgi.numproc;i++) {
+			if (uwsgi.workers[i].pid > 0) {
+				return;
+			}
+		}
+		uwsgi_log("goodbye to uWSGI.\n");
+		exit(0);
+	}
+}
+
+// check if all of the workers are dead, and trigger a reload
+int uwsgi_master_check_reload(char **argv) {
+        if (uwsgi_instance_is_reloading) {
+                int i;
+                for(i=1;i<=uwsgi.numproc;i++) {
+                        if (uwsgi.workers[i].pid > 0) {
+                                return 0;
+                        }
+                }
+		uwsgi_reload(argv);
+		// never here (unless in shared library mode)
+		return -1;
+        }
+	return 0;
+}
+
+// check for chain reload
+void uwsgi_master_check_chain() {
+	if (!uwsgi.status.chain_reloading) return;
+	if (uwsgi.status.chain_reloading > uwsgi.numproc) {
+		uwsgi.status.chain_reloading = 0;
+                uwsgi_log_verbose("chain reloading complete\n");
+	}
+	int i;
+	uwsgi_block_signal(SIGHUP);
+	for(i=1;i<=uwsgi.numproc;i++) {
+		if (uwsgi.workers[i].pid > 0 && uwsgi.workers[i].cheaped == 0 && uwsgi.workers[i].cursed_at == 0 && i == uwsgi.status.chain_reloading) {
+			uwsgi_curse(i, SIGHUP);
+			break;
+		}
+	}
+	uwsgi_unblock_signal(SIGHUP);
+}
+
+
+// special function for assuming all of the workers are dead
+void uwsgi_master_commit_status() {
+	int i;
+	for(i=1;i<=uwsgi.numproc;i++) {
+		uwsgi.workers[i].pid = 0;
+	}
+}
+
+void uwsgi_master_check_idle() {
+
+	static time_t last_request_timecheck = 0;
+	static uint64_t last_request_count = 0;
+	int i;
+	int waitpid_status;
+
+	if (!uwsgi.idle || uwsgi.status.is_cheap)
+		return;
+
+	uwsgi.current_time = uwsgi_now();
+	if (!last_request_timecheck)
+		last_request_timecheck = uwsgi.current_time;
+
+	// security check, stop the check if there are busy workers
+	for (i = 1; i <= uwsgi.numproc; i++) {
+		if (uwsgi.workers[i].cheaped == 0 && uwsgi.workers[i].pid > 0) {
+			if (uwsgi_worker_is_busy(i)) {
+				return;
+			}
+		}
+	}
+
+	if (last_request_count != uwsgi.workers[0].requests) {
+		last_request_timecheck = uwsgi.current_time;
+		last_request_count = uwsgi.workers[0].requests;
+	}
+	// a bit of over-engeneering to avoid clock skews
+	else if (last_request_timecheck < uwsgi.current_time && (uwsgi.current_time - last_request_timecheck > uwsgi.idle)) {
+		uwsgi_log("workers have been inactive for more than %d seconds (%llu-%llu)\n", uwsgi.idle, (unsigned long long) uwsgi.current_time, (unsigned long long) last_request_timecheck);
+		uwsgi.status.is_cheap = 1;
+		if (uwsgi.die_on_idle) {
+			if (uwsgi.has_emperor) {
+				char byte = 22;
+				if (write(uwsgi.emperor_fd, &byte, 1) != 1) {
+					uwsgi_error("write()");
+					kill_them_all(0);
+				}
+			}
+			else {
+				kill_them_all(0);
+			}
+			return;
+		}
+		for (i = 1; i <= uwsgi.numproc; i++) {
+			uwsgi.workers[i].cheaped = 1;
+			if (uwsgi.workers[i].pid == 0)
+				continue;
+			kill(uwsgi.workers[i].pid, SIGKILL);
+			if (waitpid(uwsgi.workers[i].pid, &waitpid_status, 0) < 0) {
+				if (errno != ECHILD)
+					uwsgi_error("uwsgi_master_check_idle()/waitpid()");
+			}
+		}
+		uwsgi_add_sockets_to_queue(uwsgi.master_queue, -1);
+		uwsgi_log("cheap mode enabled: waiting for socket connection...\n");
+		last_request_timecheck = 0;
+	}
+
+}
+
+void uwsgi_master_check_workers_deadline() {
+	int i;
+	for (i = 1; i <= uwsgi.numproc; i++) {
+		/* first check for harakiri */
+		if (uwsgi.workers[i].harakiri > 0) {
+			if (uwsgi.workers[i].harakiri < (time_t) uwsgi.current_time) {
+				trigger_harakiri(i);
+			}
+		}
+		/* then user-defined harakiri */
+		if (uwsgi.workers[i].user_harakiri > 0) {
+			if (uwsgi.workers[i].user_harakiri < (time_t) uwsgi.current_time) {
+				trigger_harakiri(i);
+			}
+		}
+		// then for evil memory checkers
+		if (uwsgi.evil_reload_on_as) {
+			if ((rlim_t) uwsgi.workers[i].vsz_size >= uwsgi.evil_reload_on_as) {
+				uwsgi_log("*** EVIL RELOAD ON WORKER %d ADDRESS SPACE: %lld (pid: %d) ***\n", i, (long long) uwsgi.workers[i].vsz_size, uwsgi.workers[i].pid);
+				kill(uwsgi.workers[i].pid, SIGKILL);
+				uwsgi.workers[i].vsz_size = 0;
+			}
+		}
+		if (uwsgi.evil_reload_on_rss) {
+			if ((rlim_t) uwsgi.workers[i].rss_size >= uwsgi.evil_reload_on_rss) {
+				uwsgi_log("*** EVIL RELOAD ON WORKER %d RSS: %lld (pid: %d) ***\n", i, (long long) uwsgi.workers[i].rss_size, uwsgi.workers[i].pid);
+				kill(uwsgi.workers[i].pid, SIGKILL);
+				uwsgi.workers[i].rss_size = 0;
+			}
+		}
+		// check if worker was running longer than allowed lifetime
+		if (uwsgi.workers[i].pid > 0 && uwsgi.workers[i].cheaped == 0 && uwsgi.shared->options[UWSGI_OPTION_MAX_WORKER_LIFETIME] > 0) {
+			uint64_t lifetime = uwsgi_now() - uwsgi.workers[i].last_spawn;
+			if (lifetime > uwsgi.shared->options[UWSGI_OPTION_MAX_WORKER_LIFETIME] && uwsgi.workers[i].manage_next_request == 1) {
+				uwsgi_log("worker %d lifetime reached, it was running for %llu second(s)\n", i, (unsigned long long) lifetime);
+				uwsgi.workers[i].manage_next_request = 0;
+				kill(uwsgi.workers[i].pid, SIGWINCH);
+			}
+		}
+
+		// need to find a better way
+		//uwsgi.workers[i].last_running_time = uwsgi.workers[i].running_time;
+	}
+
+
+
+}
+
+
+void uwsgi_master_check_gateways_deadline() {
+
+	int i;
+
+	for (i = 0; i < ushared->gateways_cnt; i++) {
+		if (ushared->gateways_harakiri[i] > 0) {
+			if (ushared->gateways_harakiri[i] < (time_t) uwsgi.current_time) {
+				if (ushared->gateways[i].pid > 0) {
+					kill(ushared->gateways[i].pid, SIGKILL);
+				}
+				ushared->gateways_harakiri[i] = 0;
+			}
+		}
+	}
+}
+
+void uwsgi_master_check_mules_deadline() {
+	int i;
+
+	for (i = 0; i < uwsgi.mules_cnt; i++) {
+		if (uwsgi.mules[i].harakiri > 0) {
+			if (uwsgi.mules[i].harakiri < (time_t) uwsgi.current_time) {
+				uwsgi_log("*** HARAKIRI ON MULE %d HANDLING SIGNAL %d (pid: %d) ***\n", i + 1, uwsgi.mules[i].signum, uwsgi.mules[i].pid);
+				kill(uwsgi.mules[i].pid, SIGKILL);
+				uwsgi.mules[i].harakiri = 0;
+			}
+		}
+	}
+}
+
+void uwsgi_master_check_spoolers_deadline() {
+	struct uwsgi_spooler *uspool = uwsgi.spoolers;
+	while (uspool) {
+		if (uspool->harakiri > 0 && uspool->harakiri < (time_t) uwsgi.current_time) {
+			uwsgi_log("*** HARAKIRI ON THE SPOOLER (pid: %d) ***\n", uspool->pid);
+			kill(uspool->pid, SIGKILL);
+			uspool->harakiri = 0;
+		}
+		uspool = uspool->next;
+	}
+}
+
+
+int uwsgi_master_check_spoolers_death(int diedpid) {
+
+	struct uwsgi_spooler *uspool = uwsgi.spoolers;
+	while (uspool) {
+		if (uspool->pid > 0 && diedpid == uspool->pid) {
+			uwsgi_log("OOOPS the spooler is no more...trying respawn...\n");
+			uspool->respawned++;
+			uspool->pid = spooler_start(uspool);
+			return -1;
+		}
+		uspool = uspool->next;
+	}
+	return 0;
+}
+
+int uwsgi_master_check_emperor_death(int diedpid) {
+	if (uwsgi.emperor_pid >= 0 && diedpid == uwsgi.emperor_pid) {
+		uwsgi_log_verbose("!!! Emperor died !!!\n");
+		uwsgi_emperor_start();
+		return -1;
+	}
+	return 0;
+}
+
+int uwsgi_master_check_mules_death(int diedpid) {
+	int i;
+	for (i = 0; i < uwsgi.mules_cnt; i++) {
+		if (uwsgi.mules[i].pid == diedpid) {
+			uwsgi_log("OOOPS mule %d (pid: %d) crippled...trying respawn...\n", i + 1, uwsgi.mules[i].pid);
+			uwsgi_mule(i + 1);
+			return -1;
+		}
+	}
+	return 0;
+}
+
+int uwsgi_master_check_gateways_death(int diedpid) {
+	int i;
+	for (i = 0; i < ushared->gateways_cnt; i++) {
+		if (ushared->gateways[i].pid == diedpid) {
+			gateway_respawn(i);
+			return -1;
+		}
+	}
+	return 0;
+}
+
+int uwsgi_master_check_daemons_death(int diedpid) {
+	/* reload the daemons */
+	if (uwsgi_daemon_check_pid_reload(diedpid)) {
+		return -1;
+	}
+	return 0;
+}
+
+int uwsgi_worker_is_busy(int wid) {
+	int i;
+	for(i=0;i<uwsgi.cores;i++) {
+		if (uwsgi.workers[wid].cores[i].in_request) {
+			return 1;
+		}
+	}
+	return 0;
+}

core/master_events.c

@@ -0,0 +1,174 @@
+#include <uwsgi.h>
+
+extern struct uwsgi_server uwsgi;
+
+int uwsgi_master_manage_events(int interesting_fd) {
+
+	// is a logline ?
+	if (uwsgi.log_master && !uwsgi.threaded_logger) {
+		// stderr log ?
+		if (interesting_fd == uwsgi.shared->worker_log_pipe[0]) {
+			uwsgi_master_log();
+			return 0;
+		}
+		// req log ?
+		if (uwsgi.req_log_master && interesting_fd == uwsgi.shared->worker_req_log_pipe[0]) {
+			uwsgi_master_req_log();
+			return 0;
+		}
+	}
+
+	// stats server ?
+	if (uwsgi.stats && uwsgi.stats_fd > -1) {
+		if (interesting_fd == uwsgi.stats_fd) {
+			uwsgi_send_stats(uwsgi.stats_fd, uwsgi_master_generate_stats);
+			return 0;
+		}
+	}
+
+	// a zerg connection ?
+	if (uwsgi.zerg_server) {
+		if (interesting_fd == uwsgi.zerg_server_fd) {
+			uwsgi_manage_zerg(uwsgi.zerg_server_fd, 0, NULL);
+			return 0;
+		}
+	}
+
+	// emperor event ?
+	if (uwsgi.has_emperor) {
+		if (interesting_fd == uwsgi.emperor_fd) {
+			uwsgi_master_manage_emperor();
+			return 0;
+		}
+	}
+
+
+	// wakeup from cheap mode ?
+	if (uwsgi.status.is_cheap) {
+		struct uwsgi_socket *uwsgi_sock = uwsgi.sockets;
+		while (uwsgi_sock) {
+			if (interesting_fd == uwsgi_sock->fd) {
+				uwsgi.status.is_cheap = 0;
+				uwsgi_del_sockets_from_queue(uwsgi.master_queue);
+				// how many worker we need to respawn ?
+				int needed = uwsgi.numproc;
+				// if in cheaper mode, just respawn the minimal amount
+				if (uwsgi.cheaper) {
+					needed = uwsgi.cheaper_count;
+				}
+				int i;
+				for (i = 1; i <= needed; i++) {
+					if (uwsgi_respawn_worker(i))
+						return -1;
+				}
+				// here we continue instead of returning
+				break;
+			}
+			uwsgi_sock = uwsgi_sock->next;
+		}
+	}
+
+
+	// an SNMP request ?
+	if (uwsgi.snmp_addr && interesting_fd == uwsgi.snmp_fd) {
+		uwsgi_master_manage_snmp(uwsgi.snmp_fd);
+		return 0;
+	}
+
+	// a UDP request ?
+	if (uwsgi.udp_socket && interesting_fd == uwsgi.udp_fd) {
+		uwsgi_master_manage_udp(uwsgi.udp_fd);
+		return 0;
+	}
+
+
+	// check if some file monitor is ready
+	// no need to lock as we are only getting registered items (and only the master can register them)
+	int i;
+	for (i = 0; i < ushared->files_monitored_cnt; i++) {
+		if (ushared->files_monitored[i].registered) {
+			if (interesting_fd == ushared->files_monitored[i].fd) {
+				struct uwsgi_fmon *uf = event_queue_ack_file_monitor(uwsgi.master_queue, interesting_fd);
+				// now call the file_monitor handler
+				if (uf)
+					uwsgi_route_signal(uf->sig);
+				return 0;
+			}
+		}
+	}
+
+	// check if some timer elapsed
+	// no need to lock again
+	for (i = 0; i < ushared->timers_cnt; i++) {
+		if (ushared->timers[i].registered) {
+			if (interesting_fd == ushared->timers[i].fd) {
+				struct uwsgi_timer *ut = event_queue_ack_timer(interesting_fd);
+				// now call the timer handler
+				if (ut)
+					uwsgi_route_signal(ut->sig);
+				return 0;
+			}
+		}
+	}
+
+	uint8_t uwsgi_signal;
+	// check for worker signal
+	if (interesting_fd == uwsgi.shared->worker_signal_pipe[0]) {
+		ssize_t rlen = read(interesting_fd, &uwsgi_signal, 1);
+		if (rlen < 0) {
+			uwsgi_error("uwsgi_master_manage_events()/read()");
+		}
+		else if (rlen > 0) {
+			uwsgi_route_signal(uwsgi_signal);
+		}
+		else {
+			// TODO restart workers here
+			uwsgi_log_verbose("lost connection with workers !!!\n");
+			close(interesting_fd);
+		}
+		return 0;
+	}
+
+	// check for spooler signal
+	if (uwsgi.spoolers) {
+		if (interesting_fd == uwsgi.shared->spooler_signal_pipe[0]) {
+			ssize_t rlen = read(interesting_fd, &uwsgi_signal, 1);
+			if (rlen < 0) {
+				uwsgi_error("uwsgi_master_manage_events()/read()");
+			}
+			else if (rlen > 0) {
+				uwsgi_route_signal(uwsgi_signal);
+			}
+			else {
+				// TODO restart spoolers here
+				uwsgi_log_verbose("lost connection with spoolers\n");
+				close(interesting_fd);
+			}
+			return 0;
+		}
+
+	}
+
+	// check for mules signal
+	if (uwsgi.mules_cnt > 0) {
+		if (interesting_fd == uwsgi.shared->mule_signal_pipe[0]) {
+			ssize_t rlen = read(interesting_fd, &uwsgi_signal, 1);
+			if (rlen < 0) {
+				uwsgi_error("uwsgi_master_manage_events()/read()");
+			}
+			else if (rlen > 0) {
+				uwsgi_route_signal(uwsgi_signal);
+			}
+			else {
+				// TODO respawn mules here
+				uwsgi_log_verbose("lost connection with mules\n");
+				close(interesting_fd);
+			}
+			// return 0;
+		}
+
+	}
+
+	return 0;
+
+}

core/mule.c

@@ -0,0 +1,470 @@
+/*
+
+uWSGI mules are very simple workers only managing signals or running custom code in background.
+
+By default they born in signal-only mode, but if you patch them (passing the script/code to run) they will became fully customized daemons.
+
+*/
+
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+void uwsgi_mule_handler(void);
+
+void mule_send_msg(int fd, char *message, size_t len) {
+
+	socklen_t so_bufsize_len = sizeof(int);
+	int so_bufsize = 0;
+
+	if (write(fd, message, len) != (ssize_t) len) {
+		if (errno == EAGAIN || errno == EWOULDBLOCK) {
+			if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &so_bufsize, &so_bufsize_len)) {
+				uwsgi_error("getsockopt()");
+			}
+			uwsgi_log("*** MULE MSG QUEUE IS FULL: buffer size %d bytes (you can tune it with --signal-bufsize) ***\n", so_bufsize);
+		}
+		else {
+			uwsgi_error("mule_send_msg()");
+		}
+	}
+}
+
+void uwsgi_mule(int id) {
+
+	int i;
+
+	pid_t pid = uwsgi_fork(uwsgi.mules[id - 1].name);
+	if (pid == 0) {
+#ifdef __linux__
+		if (prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0)) {
+			uwsgi_error("prctl()");
+		}
+#endif
+
+		signal(SIGALRM, SIG_IGN);
+                signal(SIGHUP, SIG_IGN);
+                signal(SIGINT, end_me);
+                signal(SIGTERM, end_me);
+                signal(SIGUSR1, SIG_IGN);
+                signal(SIGUSR2, SIG_IGN);
+                signal(SIGPIPE, SIG_IGN);
+                signal(SIGSTOP, SIG_IGN);
+                signal(SIGTSTP, SIG_IGN);
+
+		uwsgi.muleid = id;
+		// avoid race conditions
+		uwsgi.mules[id - 1].id = id;
+		uwsgi.mules[id - 1].pid = getpid();
+		uwsgi.mypid = uwsgi.mules[id - 1].pid;
+
+		uwsgi_fixup_fds(0, id, NULL);
+
+		uwsgi.my_signal_socket = uwsgi.mules[id - 1].signal_pipe[1];
+		uwsgi.signal_socket = uwsgi.shared->mule_signal_pipe[1];
+
+		uwsgi_close_all_sockets();
+
+		for (i = 0; i < 256; i++) {
+			if (uwsgi.p[i]->master_fixup) {
+				uwsgi.p[i]->master_fixup(1);
+			}
+		}
+
+		for (i = 0; i < 256; i++) {
+			if (uwsgi.p[i]->post_fork) {
+				uwsgi.p[i]->post_fork();
+			}
+		}
+
+
+		if (uwsgi.mules[id - 1].patch) {
+			for (i = 0; i < 256; i++) {
+				if (uwsgi.p[i]->mule) {
+					if (uwsgi.p[i]->mule(uwsgi.mules[id - 1].patch) == 1) {
+						// never here ?
+						end_me(1);
+					}
+				}
+			}
+		}
+
+		uwsgi_mule_handler();
+	}
+	else if (pid > 0) {
+		uwsgi.mules[id - 1].id = id;
+		uwsgi.mules[id - 1].pid = pid;
+		uwsgi_log("spawned uWSGI mule %d (pid: %d)\n", id, (int) pid);
+	}
+}
+
+int uwsgi_farm_has_mule(struct uwsgi_farm *farm, int muleid) {
+
+	struct uwsgi_mule_farm *umf = farm->mules;
+
+	while (umf) {
+		if (umf->mule->id == muleid) {
+			return 1;
+		}
+		umf = umf->next;
+	}
+
+	return 0;
+}
+
+int farm_has_signaled(int fd) {
+
+	int i;
+	for (i = 0; i < uwsgi.farms_cnt; i++) {
+		struct uwsgi_mule_farm *umf = uwsgi.farms[i].mules;
+		while (umf) {
+			if (umf->mule->id == uwsgi.muleid && uwsgi.farms[i].signal_pipe[1] == fd) {
+				return 1;
+			}
+			umf = umf->next;
+		}
+	}
+
+	return 0;
+}
+
+int farm_has_msg(int fd) {
+
+	int i;
+	for (i = 0; i < uwsgi.farms_cnt; i++) {
+		struct uwsgi_mule_farm *umf = uwsgi.farms[i].mules;
+		while (umf) {
+			if (umf->mule->id == uwsgi.muleid && uwsgi.farms[i].queue_pipe[1] == fd) {
+				return 1;
+			}
+			umf = umf->next;
+		}
+	}
+
+	return 0;
+}
+
+
+void uwsgi_mule_add_farm_to_queue(int queue) {
+
+	int i;
+	for (i = 0; i < uwsgi.farms_cnt; i++) {
+		if (uwsgi_farm_has_mule(&uwsgi.farms[i], uwsgi.muleid)) {
+			event_queue_add_fd_read(queue, uwsgi.farms[i].signal_pipe[1]);
+			event_queue_add_fd_read(queue, uwsgi.farms[i].queue_pipe[1]);
+		}
+	}
+}
+
+void uwsgi_mule_handler() {
+
+	ssize_t len;
+	uint8_t uwsgi_signal;
+	int rlen;
+	int interesting_fd;
+
+	// this must be configurable
+	char message[65536];
+
+	int mule_queue = event_queue_init();
+
+	event_queue_add_fd_read(mule_queue, uwsgi.signal_socket);
+	event_queue_add_fd_read(mule_queue, uwsgi.my_signal_socket);
+	event_queue_add_fd_read(mule_queue, uwsgi.mules[uwsgi.muleid - 1].queue_pipe[1]);
+	event_queue_add_fd_read(mule_queue, uwsgi.shared->mule_queue_pipe[1]);
+
+	uwsgi_mule_add_farm_to_queue(mule_queue);
+
+	for (;;) {
+		rlen = event_queue_wait(mule_queue, -1, &interesting_fd);
+		if (rlen <= 0) {
+			continue;
+		}
+
+		if (interesting_fd == uwsgi.signal_socket || interesting_fd == uwsgi.my_signal_socket || farm_has_signaled(interesting_fd)) {
+			len = read(interesting_fd, &uwsgi_signal, 1);
+			if (len <= 0) {
+				if (len < 0 && (errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK)) continue;
+				uwsgi_log_verbose("uWSGI mule %d braying: my master died, i will follow him...\n", uwsgi.muleid);
+				end_me(0);
+			}
+#ifdef UWSGI_DEBUG
+			uwsgi_log_verbose("master sent signal %d to mule %d\n", uwsgi_signal, uwsgi.muleid);
+#endif
+			if (uwsgi_signal_handler(uwsgi_signal)) {
+				uwsgi_log_verbose("error managing signal %d on mule %d\n", uwsgi_signal, uwsgi.muleid);
+			}
+		}
+		else if (interesting_fd == uwsgi.mules[uwsgi.muleid - 1].queue_pipe[1] || interesting_fd == uwsgi.shared->mule_queue_pipe[1] || farm_has_msg(interesting_fd)) {
+			len = read(interesting_fd, message, 65536);
+			if (len < 0) {
+				if (errno != EAGAIN && errno != EINTR && errno != EWOULDBLOCK) {
+					uwsgi_error("uwsgi_mule_handler/read()");
+				}
+			}
+			else {
+				int i, found = 0;
+				for (i = 0; i < 256; i++) {
+					if (uwsgi.p[i]->mule_msg) {
+						if (uwsgi.p[i]->mule_msg(message, len)) {
+							found = 1;
+							break;
+						}
+					}
+				}
+				if (!found)
+					uwsgi_log("*** mule %d received a %ld bytes message ***\n", uwsgi.muleid, (long) len);
+			}
+		}
+	}
+
+}
+
+struct uwsgi_mule *get_mule_by_id(int id) {
+
+	int i;
+
+	for (i = 0; i < uwsgi.mules_cnt; i++) {
+		if (uwsgi.mules[i].id == id) {
+			return &uwsgi.mules[i];
+		}
+	}
+
+	return NULL;
+}
+
+struct uwsgi_farm *get_farm_by_name(char *name) {
+
+	int i;
+
+	for (i = 0; i < uwsgi.farms_cnt; i++) {
+		if (!strcmp(uwsgi.farms[i].name, name)) {
+			return &uwsgi.farms[i];
+		}
+	}
+
+	return NULL;
+}
+
+
+struct uwsgi_mule_farm *uwsgi_mule_farm_new(struct uwsgi_mule_farm **umf, struct uwsgi_mule *um) {
+
+	struct uwsgi_mule_farm *uwsgi_mf = *umf, *old_umf;
+
+	if (!uwsgi_mf) {
+		*umf = uwsgi_malloc(sizeof(struct uwsgi_mule_farm));
+		uwsgi_mf = *umf;
+	}
+	else {
+		while (uwsgi_mf) {
+			old_umf = uwsgi_mf;
+			uwsgi_mf = uwsgi_mf->next;
+		}
+
+		uwsgi_mf = uwsgi_malloc(sizeof(struct uwsgi_mule_farm));
+		old_umf->next = uwsgi_mf;
+	}
+
+	uwsgi_mf->mule = um;
+	uwsgi_mf->next = NULL;
+
+	return uwsgi_mf;
+}
+
+ssize_t uwsgi_mule_get_msg(int manage_signals, int manage_farms, char *message, size_t buffer_size, int timeout) {
+
+	ssize_t len = 0;
+	struct pollfd *mulepoll;
+	int count = 4;
+	int farms_count = 0;
+	uint8_t uwsgi_signal;
+	int i;
+
+	if (uwsgi.muleid == 0)
+		return -1;
+
+	if (manage_signals)
+		count = 2;
+
+	if (!manage_farms)
+		goto next;
+
+	for (i = 0; i < uwsgi.farms_cnt; i++) {
+		if (uwsgi_farm_has_mule(&uwsgi.farms[i], uwsgi.muleid))
+			farms_count++;
+	}
+next:
+
+	if (timeout > -1)
+		timeout = timeout * 1000;
+
+	mulepoll = uwsgi_malloc(sizeof(struct pollfd) * (count + farms_count));
+
+	mulepoll[0].fd = uwsgi.mules[uwsgi.muleid - 1].queue_pipe[1];
+	mulepoll[0].events = POLLIN;
+	mulepoll[1].fd = uwsgi.shared->mule_queue_pipe[1];
+	mulepoll[1].events = POLLIN;
+	if (count > 2) {
+		mulepoll[2].fd = uwsgi.signal_socket;
+		mulepoll[2].events = POLLIN;
+		mulepoll[3].fd = uwsgi.my_signal_socket;
+		mulepoll[3].events = POLLIN;
+	}
+
+	if (farms_count > 0) {
+		int tmp_cnt = 0;
+		for (i = 0; i < uwsgi.farms_cnt; i++) {
+			if (uwsgi_farm_has_mule(&uwsgi.farms[i], uwsgi.muleid)) {
+				mulepoll[count + tmp_cnt].fd = uwsgi.farms[i].queue_pipe[1];
+				mulepoll[count + tmp_cnt].events = POLLIN;
+				tmp_cnt++;
+			}
+		}
+	}
+
+	int ret = poll(mulepoll, count + farms_count, timeout);
+	if (ret <= 0) {
+		uwsgi_error("poll");
+	}
+	else {
+		if (mulepoll[0].revents & POLLIN) {
+			len = read(uwsgi.mules[uwsgi.muleid - 1].queue_pipe[1], message, buffer_size);
+		}
+		else if (mulepoll[1].revents & POLLIN) {
+			len = read(uwsgi.shared->mule_queue_pipe[1], message, buffer_size);
+		}
+		else {
+			if (count > 2) {
+				int interesting_fd = -1;
+				if (mulepoll[2].revents & POLLIN) {
+					interesting_fd = mulepoll[2].fd;
+				}
+				else if (mulepoll[3].revents & POLLIN) {
+					interesting_fd = mulepoll[3].fd;
+				}
+
+				if (interesting_fd > -1) {
+					len = read(interesting_fd, &uwsgi_signal, 1);
+					if (len <= 0) {
+						if (len < 0 && (errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK)) goto clear;
+						uwsgi_log_verbose("uWSGI mule %d braying: my master died, i will follow him...\n", uwsgi.muleid);
+						end_me(0);
+					}
+#ifdef UWSGI_DEBUG
+					uwsgi_log_verbose("master sent signal %d to mule %d\n", uwsgi_signal, uwsgi.muleid);
+#endif
+					if (uwsgi_signal_handler(uwsgi_signal)) {
+						uwsgi_log_verbose("error managing signal %d on mule %d\n", uwsgi_signal, uwsgi.muleid);
+					}
+					// set the error condition
+					len = -1;
+					goto clear;
+				}
+			}
+
+			// read messages in the farm
+			for (i = 0; i < farms_count; i++) {
+				if (mulepoll[count + i].revents & POLLIN) {
+					len = read(mulepoll[count + i].fd, message, buffer_size);
+					break;
+				}
+			}
+		}
+	}
+
+	if (len < 0) {
+		uwsgi_error("read()");
+		goto clear;
+	}
+
+clear:
+	free(mulepoll);
+	return len;
+}
+
+
+void uwsgi_opt_add_mule(char *opt, char *value, void *foobar) {
+
+	uwsgi.mules_cnt++;
+	uwsgi_string_new_list(&uwsgi.mules_patches, value);
+}
+
+void uwsgi_opt_add_mules(char *opt, char *value, void *foobar) {
+	int i;
+
+	for (i = 0; i < atoi(value); i++) {
+		uwsgi.mules_cnt++;
+		uwsgi_string_new_list(&uwsgi.mules_patches, NULL);
+	}
+}
+
+void uwsgi_opt_add_farm(char *opt, char *value, void *foobar) {
+	uwsgi.farms_cnt++;
+	uwsgi_string_new_list(&uwsgi.farms_list, value);
+
+}
+
+void uwsgi_setup_mules_and_farms() {
+	int i;
+	if (uwsgi.mules_cnt > 0) {
+		uwsgi.mules = (struct uwsgi_mule *) uwsgi_calloc_shared(sizeof(struct uwsgi_mule) * uwsgi.mules_cnt);
+
+		create_signal_pipe(uwsgi.shared->mule_signal_pipe);
+		create_signal_pipe(uwsgi.shared->mule_queue_pipe);
+
+		for (i = 0; i < uwsgi.mules_cnt; i++) {
+			// create the socket pipe
+			create_signal_pipe(uwsgi.mules[i].signal_pipe);
+			create_signal_pipe(uwsgi.mules[i].queue_pipe);
+
+			uwsgi.mules[i].id = i + 1;
+
+			snprintf(uwsgi.mules[i].name, 0xff, "uWSGI mule %d", i + 1);
+		}
+	}
+
+	if (uwsgi.farms_cnt > 0) {
+		uwsgi.farms = (struct uwsgi_farm *) uwsgi_calloc_shared(sizeof(struct uwsgi_farm) * uwsgi.farms_cnt);
+
+		struct uwsgi_string_list *farm_name = uwsgi.farms_list;
+		for (i = 0; i < uwsgi.farms_cnt; i++) {
+
+			char *farm_value = uwsgi_str(farm_name->value);
+
+			char *mules_list = strchr(farm_value, ':');
+			if (!mules_list) {
+				uwsgi_log("invalid farm value (%s) must be in the form name:mule[,muleN].\n", farm_value);
+				exit(1);
+			}
+
+			mules_list[0] = 0;
+			mules_list++;
+
+			strncpy(uwsgi.farms[i].name, farm_value, 0xff);
+			free(farm_value);
+
+			// create the socket pipe
+			create_signal_pipe(uwsgi.farms[i].signal_pipe);
+			create_signal_pipe(uwsgi.farms[i].queue_pipe);
+
+			char *p = strtok(mules_list, ",");
+			while (p != NULL) {
+				struct uwsgi_mule *um = get_mule_by_id(atoi(p));
+				if (!um) {
+					uwsgi_log("invalid mule id: %s\n", p);
+					exit(1);
+				}
+
+				uwsgi_mule_farm_new(&uwsgi.farms[i].mules, um);
+
+				p = strtok(NULL, ",");
+			}
+			uwsgi_log("created farm %d name: %s mules:%s\n", i + 1, uwsgi.farms[i].name, strchr(farm_name->value, ':') + 1);
+
+			farm_name = farm_name->next;
+
+		}
+
+	}
+
+}

core/notify.c

@@ -16,25 +16,28 @@ void uwsgi_systemd_notify(char *message) {
 	iovec[1].iov_len = strlen(message);
 
 	iovec[2].iov_base = "\n";
-        iovec[2].iov_len = 1;
+	iovec[2].iov_len = 1;
 
 	msghdr->msg_iovlen = 3;
 
-	sendmsg(uwsgi.notification_fd, msghdr, 0);
+	if (sendmsg(uwsgi.notification_fd, msghdr, 0) < 0) {
+		uwsgi_error("sendmsg()");
+	}
 }
 
 void uwsgi_systemd_notify_ready(void) {
 
 	struct msghdr *msghdr = (struct msghdr *) uwsgi.notification_object;
-        struct iovec *iovec = msghdr->msg_iov;
+	struct iovec *iovec = msghdr->msg_iov;
 
-        iovec[0].iov_base = "STATUS=uWSGI is ready\nREADY=1\n";
-        iovec[0].iov_len = 30;
+	iovec[0].iov_base = "STATUS=uWSGI is ready\nREADY=1\n";
+	iovec[0].iov_len = 30;
 
 	msghdr->msg_iovlen = 1;
 
-	sendmsg(uwsgi.notification_fd, msghdr, 0);
-	
+	if (sendmsg(uwsgi.notification_fd, msghdr, 0) < 0) {
+		uwsgi_error("sendmsg()");
+	}
 }
 
 
@@ -49,24 +52,26 @@ void uwsgi_systemd_init(char *systemd_socket) {
 		return;
 	}
 
+	size_t len = strlen(systemd_socket);
 	sd_sun = uwsgi_malloc(sizeof(struct sockaddr_un));
 	memset(sd_sun, 0, sizeof(struct sockaddr_un));
 	sd_sun->sun_family = AF_UNIX;
-	strncpy(sd_sun->sun_path, systemd_socket, sizeof(sd_sun->sun_path));
-	if (sd_sun->sun_path[0] == '@') sd_sun->sun_path[0] = 0;
+	strncpy(sd_sun->sun_path, systemd_socket, UMIN(len, sizeof(sd_sun->sun_path)));
+	if (sd_sun->sun_path[0] == '@')
+		sd_sun->sun_path[0] = 0;
 
 	msghdr = uwsgi_malloc(sizeof(struct msghdr));
 	memset(msghdr, 0, sizeof(struct msghdr));
 
-	msghdr->msg_iov = uwsgi_malloc(sizeof(struct iovec)*3);
-	memset(msghdr->msg_iov, 0, sizeof(struct iovec)*3);
+	msghdr->msg_iov = uwsgi_malloc(sizeof(struct iovec) * 3);
+	memset(msghdr->msg_iov, 0, sizeof(struct iovec) * 3);
 
 	msghdr->msg_name = sd_sun;
-	msghdr->msg_namelen = sizeof(struct sockaddr_un);
+	msghdr->msg_namelen = sizeof(struct sockaddr_un) - (sizeof(sd_sun->sun_path) - len);
 
 	uwsgi.notification_object = msghdr;
 
 	uwsgi.notify = uwsgi_systemd_notify;
 	uwsgi.notify_ready = uwsgi_systemd_notify_ready;
-	
+
 }

core/offload.c

@@ -0,0 +1,509 @@
+#include "uwsgi.h"
+
+/*
+
+	uWSGI offloading subsystem
+
+	steps to offload a task
+
+	1) allocate a uwsgi_offload_request structure (could be on stack)
+	struct uwsgi_offload_request uor;
+	2) prepare it for a specific engine (last argument is the takeover flag)
+	uwsgi_offload_setup(my_engine, &uor, 1)
+	3) run it (last argument is the waiter)
+	int uwsgi_offload_run(wsgi_req, &uor, NULL);
+
+	between 2 and 3 you can set specific values
+
+*/
+
+
+extern struct uwsgi_server uwsgi;
+
+#define uwsgi_offload_retry if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINPROGRESS) return 0;
+#define uwsgi_offload_0r_1w(x, y) if (event_queue_del_fd(ut->queue, x, event_queue_read())) return -1;\
+					if (event_queue_fd_read_to_write(ut->queue, y)) return -1;
+
+void uwsgi_offload_setup(struct uwsgi_offload_engine *uoe, struct uwsgi_offload_request *uor, struct wsgi_request *wsgi_req, uint8_t takeover) {
+
+	memset(uor, 0, sizeof(struct uwsgi_offload_request));
+
+	uor->engine = uoe;
+
+	uor->s = wsgi_req->fd;
+	uor->fd = -1;
+	uor->fd2 = -1;
+	// an engine could changes behaviour based on pipe anf takeover values
+	uor->pipe[0] = -1;
+	uor->pipe[1] = -1;
+	uor->takeover = takeover;
+
+}
+
+static int uwsgi_offload_enqueue(struct wsgi_request *wsgi_req, struct uwsgi_offload_request *uor) {
+	struct uwsgi_core *uc = &uwsgi.workers[uwsgi.mywid].cores[wsgi_req->async_id];
+	uc->offloaded_requests++;
+	// round robin
+	if (uc->offload_rr >= uwsgi.offload_threads) {
+		uc->offload_rr = 0;
+	}
+	struct uwsgi_thread *ut = uwsgi.offload_thread[uc->offload_rr];
+	uc->offload_rr++;
+	if (write(ut->pipe[0], uor, sizeof(struct uwsgi_offload_request)) != sizeof(struct uwsgi_offload_request)) {
+		if (uor->takeover) {
+			wsgi_req->fd_closed = 0;
+		}
+		return -1;
+	}
+	return 0;
+}
+
+/*
+
+	transfer offload engine:
+		name -> socket name
+		ubuf -> data to send
+
+*/
+
+int u_offload_transfer_prepare(struct wsgi_request *wsgi_req, struct uwsgi_offload_request *uor) {
+
+	if (!uor->name) {
+		return -1;
+	}
+
+	uor->fd = uwsgi_connect(uor->ubuf->buf, 0, 1);
+	if (uor->fd < 0) {
+		uwsgi_error("u_offload_transfer_prepare()/connect()");
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+
+	sendfile offload engine:
+		name -> filename to transfer
+		fd -> file descriptor of file to transfer	
+		fd2 -> sendfile destination (default wsgi_req->fd)
+		len -> size of the file or amount of data to transfer
+		pos -> position in the file
+
+*/
+
+static int u_offload_sendfile_prepare(struct wsgi_request *wsgi_req, struct uwsgi_offload_request *uor) {
+
+	if (!uor->name && uor->fd == -1) return -1;
+
+	if (uor->name) {
+		uor->fd = open(uor->name, O_RDONLY | O_NONBLOCK);
+		if (uor->fd < 0) {
+			uwsgi_error_open(uor->name);
+			return -1;
+		}
+	}
+
+	// make a fstat to get the file size
+	if (!uor->len) {
+		struct stat st;
+		if (fstat(uor->fd, &st)) {
+			uwsgi_error("u_offload_sendfile_prepare()/fstat()");
+			if (uor->name) {
+				close(uor->fd);
+			}
+			return -1;
+		}
+		uor->len = st.st_size;
+	}
+
+	if (uor->fd2 == -1) {
+		uor->fd2 = uor->s;
+	}
+	uor->s = -1;
+
+	return 0;
+}
+
+static void uwsgi_offload_close(struct uwsgi_thread *ut, struct uwsgi_offload_request *uor) {
+	// close the socket and the file descriptor
+	if (uor->takeover && uor->s > -1) {
+		close(uor->s);
+	}
+	if (uor->fd != -1) {
+		close(uor->fd);
+	}
+	if (uor->fd2 != -1) {
+		close(uor->fd2);
+	}
+	// remove the structure from the linked list;
+	struct uwsgi_offload_request *prev = uor->prev;
+	struct uwsgi_offload_request *next = uor->next;
+
+	if (uor == ut->offload_requests_head) {
+		ut->offload_requests_head = next;
+	}
+
+	if (uor == ut->offload_requests_tail) {
+		ut->offload_requests_tail = prev;
+	}
+
+	if (prev) {
+		prev->next = next;
+	}
+
+	if (next) {
+		next->prev = prev;
+	}
+
+	if (uor->buf) {
+		free(uor->buf);
+	}
+
+	if (uor->ubuf) {
+		uwsgi_buffer_destroy(uor->ubuf);
+	}
+
+	if (uor->pipe[0] != -1) {
+		close(uor->pipe[1]);
+		close(uor->pipe[0]);
+	}
+
+	free(uor);
+}
+
+static void uwsgi_offload_append(struct uwsgi_thread *ut, struct uwsgi_offload_request *uor) {
+
+	if (!ut->offload_requests_head) {
+		ut->offload_requests_head = uor;
+	}
+
+	if (ut->offload_requests_tail) {
+		ut->offload_requests_tail->next = uor;
+		uor->prev = ut->offload_requests_tail;
+	}
+
+	ut->offload_requests_tail = uor;
+}
+
+static struct uwsgi_offload_request *uwsgi_offload_get_by_fd(struct uwsgi_thread *ut, int s) {
+	struct uwsgi_offload_request *uor = ut->offload_requests_head;
+	while (uor) {
+		if (uor->s == s || uor->fd == s || uor->fd2 == s) {
+			return uor;
+		}
+		uor = uor->next;
+	}
+
+	return NULL;
+}
+
+static void uwsgi_offload_loop(struct uwsgi_thread *ut) {
+
+	int i;
+	void *events = event_queue_alloc(uwsgi.offload_threads_events);
+
+	for (;;) {
+		int nevents = event_queue_wait_multi(ut->queue, -1, events, uwsgi.offload_threads_events);
+		for (i = 0; i < nevents; i++) {
+			int interesting_fd = event_queue_interesting_fd(events, i);
+			if (interesting_fd == ut->pipe[1]) {
+				struct uwsgi_offload_request *uor = uwsgi_malloc(sizeof(struct uwsgi_offload_request));
+				ssize_t len = read(ut->pipe[1], uor, sizeof(struct uwsgi_offload_request));
+				if (len != sizeof(struct uwsgi_offload_request)) {
+					uwsgi_error("read()");
+					free(uor);
+					continue;
+				}
+				// cal the event function for the first time
+				if (uor->engine->event_func(ut, uor, -1)) {
+					uwsgi_offload_close(ut, uor);
+					continue;
+				}
+				uwsgi_offload_append(ut, uor);
+				continue;
+			}
+
+			// get the task from the interesting fd
+			struct uwsgi_offload_request *uor = uwsgi_offload_get_by_fd(ut, interesting_fd);
+			if (!uor)
+				continue;
+			// run the hook
+			if (uor->engine->event_func(ut, uor, interesting_fd)) {
+				uwsgi_offload_close(ut, uor);
+			}
+		}
+	}
+}
+
+struct uwsgi_thread *uwsgi_offload_thread_start() {
+	return uwsgi_thread_new(uwsgi_offload_loop);
+}
+
+/*
+
+the offload task starts after having acquired the file fd
+
+	uor->len -> the size of the file
+	uor->pos -> start writing from pos (default 0)
+
+	status: none
+
+*/
+
+static int u_offload_sendfile_do(struct uwsgi_thread *ut, struct uwsgi_offload_request *uor, int fd) {
+
+	if (fd == -1) {
+		if (event_queue_add_fd_write(ut->queue, uor->fd2)) return -1;
+		return 0;
+	}
+#if defined(__linux__) || defined(__sun__)
+	ssize_t len = sendfile(uor->fd2, uor->fd, &uor->pos, 128 * 1024);
+	if (len > 0) {
+        	uor->written += len;
+                if (uor->written >= uor->len) {
+			return -1;
+		}
+		return 0;
+	}
+        else if (len < 0) {
+		uwsgi_offload_retry
+                uwsgi_error("u_offload_sendfile_do()");
+	}
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+	off_t sbytes = 0;
+	int ret = sendfile(uor->fd, uor->fd2, uor->pos, 0, NULL, &sbytes, 0);
+	// transfer finished
+	if (ret == -1) {
+		uor->pos += sbytes;
+		uwsgi_offload_retry
+                uwsgi_error("u_offload_sendfile_do()");
+	}
+#elif defined(__APPLE__)
+	off_t len = 0;
+        int ret = sendfile(uor->fd, uor->fd2, uor->pos, &len, NULL, 0);
+        // transfer finished
+        if (ret == -1) {
+                uor->pos += len;
+                uwsgi_offload_retry
+                uwsgi_error("u_offload_sendfile_do()");
+        }
+#endif
+	return -1;
+
+}
+
+/*
+the offload task starts soon after the call to connect()
+
+	status:
+		0 -> waiting for connection on fd
+		1 -> sending request to fd (write event)
+		2 -> start waiting for read on s and fd
+		3 -> write to s
+		4 -> write to fd
+*/
+static int u_offload_transfer_do(struct uwsgi_thread *ut, struct uwsgi_offload_request *uor, int fd) {
+	
+	ssize_t rlen;
+
+	// setup
+	if (fd == -1) {
+		event_queue_add_fd_write(ut->queue, uor->fd);
+		return 0;
+	}
+
+	switch(uor->status) {
+		// waiting for connection
+		case 0:
+			if (fd == uor->fd) {
+				uor->status = 1;
+				// ok try to send the request right now...
+				return u_offload_transfer_do(ut, uor, fd);
+			}
+			return -1;
+		// write event (or just connected)
+		case 1:
+			if (fd == uor->fd) {
+				rlen = write(uor->fd, uor->ubuf->buf + uor->written, uor->ubuf->pos-uor->written);	
+				if (rlen > 0) {
+					uor->written += rlen;
+					if (uor->written >= (size_t)uor->ubuf->pos) {
+						uor->status = 2;
+						if (event_queue_add_fd_read(ut->queue, uor->s)) return -1;
+						if (event_queue_fd_write_to_read(ut->queue, uor->fd)) return -1;
+					}
+					return 0;
+				}
+				else if (rlen < 0) {
+					uwsgi_offload_retry
+					uwsgi_error("u_offload_transfer_do() -> write()");
+				}
+			}	
+			return -1;
+		// read event from s or fd
+		case 2:
+			if (!uor->buf) {
+				uor->buf = uwsgi_malloc(4096);
+			}
+			if (fd == uor->fd) {
+				rlen = read(uor->fd, uor->buf, 4096);
+				if (rlen > 0) {
+					uor->to_write = rlen;
+					uor->pos = 0;
+					uwsgi_offload_0r_1w(uor->fd, uor->s)
+					uor->status = 3;
+					return 0;
+				}
+				if (rlen < 0) {
+					uwsgi_offload_retry
+					uwsgi_error("u_offload_transfer_do() -> read()/fd");
+				}
+			}
+			else if (fd == uor->s) {
+				rlen = read(uor->s, uor->buf, 4096);
+				if (rlen > 0) {
+					uor->to_write = rlen;
+					uor->pos = 0;
+					uwsgi_offload_0r_1w(uor->s, uor->fd)
+					uor->status = 4;
+					return 0;
+				}
+				if (rlen < 0) {
+					uwsgi_offload_retry
+					uwsgi_error("u_offload_transfer_do() -> read()/s");
+				}
+			}
+			return -1;
+		// write event on s
+		case 3:
+			rlen = write(uor->s, uor->buf + uor->pos, uor->to_write);
+			if (rlen > 0) {
+				uor->to_write -= rlen;
+				uor->pos += rlen;
+				if (uor->to_write == 0) {
+					if (event_queue_fd_write_to_read(ut->queue, uor->s)) return -1;
+					if (event_queue_add_fd_read(ut->queue, uor->fd)) return -1;
+					uor->status = 2;
+				}
+				return 0;
+			}
+			else if (rlen < 0) {
+				uwsgi_offload_retry
+				uwsgi_error("u_offload_transfer_do() -> write()/s");
+			}
+			return -1;
+		// write event on fd
+		case 4:
+			rlen = write(uor->fd, uor->buf + uor->pos, uor->to_write);
+			if (rlen > 0) {
+				uor->to_write -= rlen;
+				uor->pos += rlen;
+				if (uor->to_write == 0) {
+					if (event_queue_fd_write_to_read(ut->queue, uor->fd)) return -1;
+					if (event_queue_add_fd_read(ut->queue, uor->s)) return -1;
+					uor->status = 2;
+				}
+				return 0;
+			}
+			else if (rlen < 0) {
+				uwsgi_offload_retry
+				uwsgi_error("u_offload_transfer_do() -> write()/fd");
+			}
+			return -1;
+		default:
+			break;
+	}
+
+	return -1;
+}
+
+int uwsgi_offload_run(struct wsgi_request *wsgi_req, struct uwsgi_offload_request *uor, int *wait) {
+
+	if (uor->engine->prepare_func(wsgi_req, uor)) {
+		return -1;
+	}
+
+	if (wait) {
+                if (pipe(uor->pipe)) {
+                        uwsgi_error("uwsgi_offload_setup()/pipe()");
+                        return -1;
+                }
+                *wait = uor->pipe[0];
+                uwsgi_socket_nb(uor->pipe[0]);
+                uwsgi_socket_nb(uor->pipe[1]);
+        }
+
+        if (uor->takeover) {
+                wsgi_req->fd_closed = 1;
+        }
+
+	if (uwsgi_offload_enqueue(wsgi_req, uor)) {
+		close(uor->pipe[0]);
+		close(uor->pipe[1]);
+		if (uor->takeover) {
+			wsgi_req->fd_closed = 0;
+		}
+		return -1;
+        }
+
+        return 0;
+	
+};
+
+struct uwsgi_offload_engine *uwsgi_offload_engine_by_name(char *name) {
+	struct uwsgi_offload_engine *uoe = uwsgi.offload_engines;
+	while(uoe) {
+		if (!strcmp(name, uoe->name)) {
+			return uoe;
+		}
+	}
+	return NULL;
+}
+
+struct uwsgi_offload_engine *uwsgi_offload_register_engine(char *name, int (*prepare_func)(struct wsgi_request *, struct uwsgi_offload_request *), int (*event_func) (struct uwsgi_thread *, struct uwsgi_offload_request *, int)) {
+
+	struct uwsgi_offload_engine *old_engine=NULL,*engine=uwsgi.offload_engines;
+	while(engine) {
+		if (!strcmp(engine->name, name)) {
+			return engine;
+		}
+		old_engine = engine;
+		engine = engine->next;
+	}
+
+	engine = uwsgi_calloc(sizeof(struct uwsgi_offload_engine));
+	engine->name = name;
+	engine->prepare_func = prepare_func;
+	engine->event_func = event_func;
+
+	if (old_engine) {
+		old_engine->next = engine;
+	}
+	else {
+		uwsgi.offload_engines = engine;
+	}
+
+	return engine;
+}
+
+void uwsgi_offload_engines_register_all() {
+	uwsgi.offload_engine_sendfile = uwsgi_offload_register_engine("sendfile", u_offload_sendfile_prepare, u_offload_sendfile_do);
+	uwsgi.offload_engine_transfer = uwsgi_offload_register_engine("transfer", u_offload_transfer_prepare, u_offload_transfer_do);
+}
+
+int uwsgi_offload_request_sendfile_do(struct wsgi_request *wsgi_req, int fd, size_t len) {
+	struct uwsgi_offload_request uor;
+	uwsgi_offload_setup(uwsgi.offload_engine_sendfile, &uor, wsgi_req, 1);
+	uor.fd = fd;
+	uor.len = len;
+	return uwsgi_offload_run(wsgi_req, &uor, NULL);
+}
+
+int uwsgi_offload_request_net_do(struct wsgi_request *wsgi_req, char *socketname, struct uwsgi_buffer *ubuf) {
+	struct uwsgi_offload_request uor;
+	uwsgi_offload_setup(uwsgi.offload_engine_transfer, &uor, wsgi_req, 1);
+	uor.name = socketname;
+	uor.ubuf = ubuf;
+	return uwsgi_offload_run(wsgi_req, &uor, NULL);
+}

core/plugins.c

@@ -0,0 +1,307 @@
+#include "uwsgi.h"
+
+extern struct uwsgi_server uwsgi;
+
+#ifdef UWSGI_ELF
+static void uwsgi_plugin_parse_section(char *filename) {
+	size_t s_len = 0;
+	char *buf = uwsgi_elf_section(filename, "uwsgi", &s_len);
+	if (buf) {
+		char *ctx = NULL;
+		char *p = strtok_r(buf, "\n", &ctx);
+		while (p) {
+			char *equal = strchr(p, '=');
+			if (equal) {
+				*equal = 0;
+				if (!strcmp(p, "requires")) {
+					uwsgi_load_plugin(-1, equal + 1, NULL);
+				}
+			}
+			p = strtok_r(NULL, "\n", &ctx);
+		}
+		free(buf);
+	}
+}
+#endif
+
+int plugin_already_loaded(const char *plugin) {
+	int i;
+
+	for (i = 0; i < 256; i++) {
+		if (uwsgi.p[i]->name) {
+			if (!strcmp(plugin, uwsgi.p[i]->name)) {
+#ifdef UWSGI_DEBUG
+				uwsgi_log("%s plugin already available\n", plugin);
+#endif
+				return 1;
+			}
+		}
+		if (uwsgi.p[i]->alias) {
+			if (!strcmp(plugin, uwsgi.p[i]->alias)) {
+#ifdef UWSGI_DEBUG
+				uwsgi_log("%s plugin already available\n", plugin);
+#endif
+				return 1;
+			}
+		}
+	}
+
+	for (i = 0; i < uwsgi.gp_cnt; i++) {
+
+		if (uwsgi.gp[i]->name) {
+			if (!strcmp(plugin, uwsgi.gp[i]->name)) {
+#ifdef UWSGI_DEBUG
+				uwsgi_log("%s plugin already available\n", plugin);
+#endif
+				return 1;
+			}
+		}
+		if (uwsgi.gp[i]->alias) {
+			if (!strcmp(plugin, uwsgi.gp[i]->alias)) {
+#ifdef UWSGI_DEBUG
+				uwsgi_log("%s plugin already available\n", plugin);
+#endif
+				return 1;
+			}
+		}
+	}
+
+	return 0;
+}
+
+void *uwsgi_load_plugin(int modifier, char *plugin, char *has_option) {
+
+	void *plugin_handle = NULL;
+	char *plugin_abs_path = NULL;
+	char *plugin_filename = NULL;
+
+	int need_free = 0;
+	char *plugin_name = uwsgi_strip(uwsgi_str(plugin));
+	char *plugin_symbol_name_start = plugin_name;
+
+	struct uwsgi_plugin *up;
+	char linkpath_buf[1024], linkpath[1024];
+	int linkpath_size;
+
+	char *colon = strchr(plugin_name, ':');
+	if (colon) {
+		colon[0] = 0;
+		modifier = atoi(plugin_name);
+		plugin_name = colon + 1;
+		colon[0] = ':';
+	}
+
+	if (!uwsgi_endswith(plugin_name, "_plugin.so")) {
+		plugin_name = uwsgi_concat2(plugin_name, "_plugin.so");
+		need_free = 1;
+	}
+
+	plugin_symbol_name_start = plugin_name;
+
+	// step 1: check for absolute plugin (stop if it fails)
+	if (strchr(plugin_name, '/')) {
+#ifdef UWSGI_ELF
+		uwsgi_plugin_parse_section(plugin_name);
+#endif
+		plugin_handle = dlopen(plugin_name, RTLD_NOW | RTLD_GLOBAL);
+		if (!plugin_handle) {
+			if (!has_option)
+				uwsgi_log("%s\n", dlerror());
+			goto end;
+		}
+		plugin_symbol_name_start = uwsgi_get_last_char(plugin_name, '/');
+		plugin_symbol_name_start++;
+		plugin_abs_path = plugin_name;
+		goto success;
+	}
+
+	// step dir, check for user-supplied plugins directory
+	struct uwsgi_string_list *pdir = uwsgi.plugins_dir;
+	while (pdir) {
+		plugin_filename = uwsgi_concat3(pdir->value, "/", plugin_name);
+#ifdef UWSGI_ELF
+		uwsgi_plugin_parse_section(plugin_filename);
+#endif
+		plugin_handle = dlopen(plugin_filename, RTLD_NOW | RTLD_GLOBAL);
+		if (plugin_handle) {
+			plugin_abs_path = plugin_filename;
+			//free(plugin_filename);
+			goto success;
+		}
+		free(plugin_filename);
+		plugin_filename = NULL;
+		pdir = pdir->next;
+	}
+
+	// last step: search in compile-time plugin_dir
+	if (!plugin_handle) {
+		plugin_filename = uwsgi_concat3(UWSGI_PLUGIN_DIR, "/", plugin_name);
+#ifdef UWSGI_ELF
+		uwsgi_plugin_parse_section(plugin_filename);
+#endif
+		plugin_handle = dlopen(plugin_filename, RTLD_NOW | RTLD_GLOBAL);
+		plugin_abs_path = plugin_filename;
+		//free(plugin_filename);
+	}
+
+success:
+	if (!plugin_handle) {
+		if (!has_option)
+			uwsgi_log("!!! UNABLE to load uWSGI plugin: %s !!!\n", dlerror());
+	}
+	else {
+		char *plugin_entry_symbol = uwsgi_concat2n(plugin_symbol_name_start, strlen(plugin_symbol_name_start) - 3, "", 0);
+		up = dlsym(plugin_handle, plugin_entry_symbol);
+		if (!up) {
+			// is it a link ?
+			memset(linkpath_buf, 0, 1024);
+			memset(linkpath, 0, 1024);
+			if ((linkpath_size = readlink(plugin_abs_path, linkpath_buf, 1023)) > 0) {
+				do {
+					linkpath_buf[linkpath_size] = '\0';
+					strncpy(linkpath, linkpath_buf, linkpath_size + 1);
+				} while ((linkpath_size = readlink(linkpath, linkpath_buf, 1023)) > 0);
+#ifdef UWSGI_DEBUG
+				uwsgi_log("%s\n", linkpath);
+#endif
+				free(plugin_entry_symbol);
+				char *slash = uwsgi_get_last_char(linkpath, '/');
+				if (!slash) {
+					slash = linkpath;
+				}
+				else {
+					slash++;
+				}
+				plugin_entry_symbol = uwsgi_concat2n(slash, strlen(slash) - 3, "", 0);
+				up = dlsym(plugin_handle, plugin_entry_symbol);
+			}
+		}
+		if (up) {
+			if (!up->name) {
+				uwsgi_log("the loaded plugin (%s) has no .name attribute\n", plugin_name);
+				if (dlclose(plugin_handle)) {
+					uwsgi_error("dlclose()");
+				}
+				if (need_free)
+					free(plugin_name);
+				if (plugin_filename)
+					free(plugin_filename);
+				free(plugin_entry_symbol);
+				return NULL;
+			}
+			if (plugin_already_loaded(up->name)) {
+				if (dlclose(plugin_handle)) {
+					uwsgi_error("dlclose()");
+				}
+				if (need_free)
+					free(plugin_name);
+				if (plugin_filename)
+					free(plugin_filename);
+				free(plugin_entry_symbol);
+				return NULL;
+			}
+			if (has_option) {
+				struct uwsgi_option *op = up->options;
+				int found = 0;
+				while (op && op->name) {
+					if (!strcmp(has_option, op->name)) {
+						found = 1;
+						break;
+					}
+					op++;
+				}
+				if (!found) {
+					if (dlclose(plugin_handle)) {
+						uwsgi_error("dlclose()");
+					}
+					if (need_free)
+						free(plugin_name);
+					if (plugin_filename)
+						free(plugin_filename);
+					free(plugin_entry_symbol);
+					return NULL;
+				}
+
+			}
+			if (modifier != -1) {
+				fill_plugin_table(modifier, up);
+				up->modifier1 = modifier;
+			}
+			else {
+				fill_plugin_table(up->modifier1, up);
+			}
+			if (need_free)
+				free(plugin_name);
+			if (plugin_filename)
+				free(plugin_filename);
+			free(plugin_entry_symbol);
+
+			if (up->on_load)
+				up->on_load();
+			return plugin_handle;
+		}
+		if (!has_option)
+			uwsgi_log("%s\n", dlerror());
+	}
+
+end:
+	if (need_free)
+		free(plugin_name);
+	if (plugin_filename)
+		free(plugin_filename);
+
+	return NULL;
+}
+
+int uwsgi_try_autoload(char *option) {
+	DIR *d;
+	struct dirent *dp;
+	// step dir, check for user-supplied plugins directory
+	struct uwsgi_string_list *pdir = uwsgi.plugins_dir;
+	while (pdir) {
+		d = opendir(pdir->value);
+		if (d) {
+			while ((dp = readdir(d)) != NULL) {
+				if (uwsgi_endswith(dp->d_name, "_plugin.so")) {
+					char *filename = uwsgi_concat3(pdir->value, "/", dp->d_name);
+					if (uwsgi_load_plugin(-1, filename, option)) {
+						uwsgi_log("option \"%s\" found in plugin %s\n", option, filename);
+						free(filename);
+						closedir(d);
+						// add new options
+						build_options();
+						return 1;
+					}
+					free(filename);
+				}
+			}
+			closedir(d);
+		}
+		pdir = pdir->next;
+	}
+
+	// last step: search in compile-time plugin_dir
+	d = opendir(UWSGI_PLUGIN_DIR);
+	if (!d)
+		return 0;
+
+	while ((dp = readdir(d)) != NULL) {
+		if (uwsgi_endswith(dp->d_name, "_plugin.so")) {
+			char *filename = uwsgi_concat3(UWSGI_PLUGIN_DIR, "/", dp->d_name);
+			if (uwsgi_load_plugin(-1, filename, option)) {
+				uwsgi_log("option \"%s\" found in plugin %s\n", option, filename);
+				free(filename);
+				closedir(d);
+				// add new options
+				build_options();
+				return 1;
+			}
+			free(filename);
+		}
+	}
+
+	closedir(d);
+
+	return 0;
+
+}

core/progress.c

@@ -0,0 +1,107 @@
+#include <uwsgi.h>
+
+/*
+
+	upload progress facilities
+
+*/
+
+extern struct uwsgi_server uwsgi;
+
+char *uwsgi_upload_progress_create(struct wsgi_request *wsgi_req, int *fd) {
+	const char *x_progress_id = "X-Progress-ID=";
+	char *xpi_ptr = (char *) x_progress_id;
+	uint16_t i;
+	char *upload_progress_filename = NULL;
+
+	if (wsgi_req->uri_len <= 51)
+		return NULL;
+
+
+	for (i = 0; i < wsgi_req->uri_len; i++) {
+		if (wsgi_req->uri[i] == xpi_ptr[0]) {
+			if (xpi_ptr[0] == '=') {
+				if (wsgi_req->uri + i + 36 <= wsgi_req->uri + wsgi_req->uri_len) {
+					upload_progress_filename = wsgi_req->uri + i + 1;
+				}
+				break;
+			}
+			xpi_ptr++;
+		}
+		else {
+			xpi_ptr = (char *) x_progress_id;
+		}
+	}
+
+	// now check for valid uuid (from spec available at http://en.wikipedia.org/wiki/Universally_unique_identifier)
+	if (!upload_progress_filename)
+		return NULL;
+
+	uwsgi_log("upload progress uuid = %.*s\n", 36, upload_progress_filename);
+	if (!check_hex(upload_progress_filename, 8))
+		return NULL;
+	if (upload_progress_filename[8] != '-')
+		return NULL;
+
+	if (!check_hex(upload_progress_filename + 9, 4))
+		return NULL;
+	if (upload_progress_filename[13] != '-')
+		return NULL;
+
+	if (!check_hex(upload_progress_filename + 14, 4))
+		return NULL;
+	if (upload_progress_filename[18] != '-')
+		return NULL;
+
+	if (!check_hex(upload_progress_filename + 19, 4))
+		return NULL;
+	if (upload_progress_filename[23] != '-')
+		return NULL;
+
+	if (!check_hex(upload_progress_filename + 24, 12))
+		return NULL;
+
+	upload_progress_filename = uwsgi_concat4n(uwsgi.upload_progress, strlen(uwsgi.upload_progress), "/", 1, upload_progress_filename, 36, ".js", 3);
+	// here we use O_EXCL to avoid eventual application bug in uuid generation/using
+	*fd = open(upload_progress_filename, O_WRONLY | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR | S_IRGRP);
+	if (*fd < 0) {
+		uwsgi_error_open(upload_progress_filename);
+		free(upload_progress_filename);
+		return NULL;
+	}
+
+	return upload_progress_filename;
+}
+
+int uwsgi_upload_progress_update(struct wsgi_request *wsgi_req, int fd, size_t remains) {
+	char buf[4096];
+
+	int ret = snprintf(buf, 4096, "{ \"state\" : \"uploading\", \"received\" : %llu, \"size\" : %llu }\r\n", (unsigned long long) (wsgi_req->post_cl - remains), (unsigned long long) wsgi_req->post_cl);
+	if (ret < 0) {
+		return -1;
+	}
+
+	if (lseek(fd, 0, SEEK_SET)) {
+		uwsgi_error("uwsgi_upload_progress_update()/lseek()");
+		return -1;
+	}
+
+	if (write(fd, buf, ret) != ret) {
+		uwsgi_error("uwsgi_upload_progress_update()/write()");
+		return -1;
+	}
+
+	if (fsync(fd)) {
+		uwsgi_error("uwsgi_upload_progress_update()/fsync()");
+		return -1;
+	}
+	return 0;
+}
+
+void uwsgi_upload_progress_destroy(char *filename, int fd) {
+	close(fd);
+	if (unlink(filename)) {
+		uwsgi_error("uwsgi_upload_progress_destroy()/unlink()");
+	}
+	free(filename);
+}