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added preliminary python tracebacker

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roberto@precise64
2012-05-11 20:44:56 +02:00
parent 8c833101d8
commit 9fe275141f
5 changed files with 152 additions and 14 deletions
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plugins/python/python_plugin.c
+131 -14
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@@ -120,6 +120,7 @@ struct uwsgi_option uwsgi_python_options[] = {
{"pyrun", required_argument, 0, "run a python script in the uWSGI environment", uwsgi_opt_pyrun, NULL, 0},
#ifdef UWSGI_THREADING
{"py-tracebacker", required_argument, 0, "enable the uWSGI python tracebacker", uwsgi_opt_set_str, &up.tracebacker, UWSGI_OPT_THREADS|UWSGI_OPT_MASTER},
{"py-auto-reload", required_argument, 0, "monitor python modules mtime to trigger reload (use only in development)", uwsgi_opt_set_int, &up.auto_reload, UWSGI_OPT_THREADS|UWSGI_OPT_MASTER},
{"py-autoreload", required_argument, 0, "monitor python modules mtime to trigger reload (use only in development)", uwsgi_opt_set_int, &up.auto_reload, UWSGI_OPT_THREADS|UWSGI_OPT_MASTER},
{"python-auto-reload", required_argument, 0, "monitor python modules mtime to trigger reload (use only in development)", uwsgi_opt_set_int, &up.auto_reload, UWSGI_OPT_THREADS|UWSGI_OPT_MASTER},
@@ -323,6 +324,11 @@ void uwsgi_python_post_fork() {
pthread_t par_tid;
pthread_create(&par_tid, NULL, uwsgi_python_autoreloader_thread, NULL);
}
if (up.tracebacker) {
// spawn the tracebacker thread
pthread_t ptb_tid;
pthread_create(&ptb_tid, NULL, uwsgi_python_tracebacker_thread, NULL);
}
#endif
}
@@ -1224,25 +1230,25 @@ int uwsgi_check_python_mtime(PyObject *times_dict, char *filename) {
}
return 0;
}
void *uwsgi_python_autoreloader_thread(void *foobar) {
PyObject *modules;
PyObject *uwsgi_python_setup_thread(char *name) {
// block signals on this thread
sigset_t smask;
sigset_t smask;
sigfillset(&smask);
#ifndef UWSGI_DEBUG
sigdelset(&smask, SIGSEGV);
#endif
pthread_sigmask(SIG_BLOCK, &smask, NULL);
PyThreadState *pts = PyThreadState_New(up.main_thread->interp);
pthread_setspecific(up.upt_save_key, (void *) pts);
PyThreadState *pts = PyThreadState_New(up.main_thread->interp);
pthread_setspecific(up.upt_save_key, (void *) pts);
pthread_setspecific(up.upt_gil_key, (void *) pts);
UWSGI_GET_GIL;
PyObject *threading_module = PyImport_ImportModule("threading");
if (threading_module) {
PyObject *threading_module_dict = PyModule_GetDict(threading_module);
UWSGI_GET_GIL;
PyObject *threading_module = PyImport_ImportModule("threading");
if (threading_module) {
PyObject *threading_module_dict = PyModule_GetDict(threading_module);
if (threading_module_dict) {
#ifdef PYTHREE
PyObject *threading_current = PyDict_GetItemString(threading_module_dict, "current_thread");
@@ -1256,20 +1262,131 @@ void *uwsgi_python_autoreloader_thread(void *foobar) {
PyErr_Clear();
}
else {
PyObject_SetAttrString(current_thread, "name", PyString_FromString("uWSGIAutoReloader"));
PyObject_SetAttrString(current_thread, "name", PyString_FromString(name));
Py_INCREF(current_thread);
modules = PyImport_GetModuleDict();
goto cycle;
return current_thread;
}
}
}
}
return NULL;
}
void *uwsgi_python_tracebacker_thread(void *foobar) {
struct iovec iov[9];
PyObject *new_thread = uwsgi_python_setup_thread("uWSGITraceBacker");
if (!new_thread) return NULL;
struct sockaddr_un so_sun;
socklen_t so_sun_len = 0;
char *str_wid = uwsgi_num2str(uwsgi.mywid);
char *sock_path = uwsgi_concat2(up.tracebacker, str_wid);
int current_defer_accept = uwsgi.no_defer_accept;
uwsgi.no_defer_accept = 1;
int fd = bind_to_unix(sock_path, uwsgi.listen_queue, uwsgi.chmod_socket, uwsgi.abstract_socket);
uwsgi.no_defer_accept = current_defer_accept;
PyObject *threading_module = PyImport_ImportModule("threading");
if (!threading_module) return NULL;
//PyObject *threading_dict = PyModule_GetDict(threading_module);
PyObject *traceback_module = PyImport_ImportModule("traceback");
if (!traceback_module) return NULL;
PyObject *traceback_dict = PyModule_GetDict(traceback_module);
PyObject *extract_stack = PyDict_GetItemString(traceback_dict, "extract_stack");
PyObject *sys_module = PyImport_ImportModule("sys");
PyObject *sys_dict = PyModule_GetDict(sys_module);
PyObject *_current_frames = PyDict_GetItemString(sys_dict, "_current_frames");
uwsgi_log("python tracebacker for worker %d available on %s\n", uwsgi.mywid, sock_path);
for(;;) {
UWSGI_RELEASE_GIL;
int client_fd = accept(fd, (struct sockaddr *) &so_sun, &so_sun_len);
if (client_fd < 0) {
uwsgi_error("accept()");
UWSGI_GET_GIL;
continue;
}
UWSGI_GET_GIL;
// here is the core of the tracebacker
PyObject *current_frames = PyEval_CallObject(_current_frames, (PyObject *)NULL);
if (!current_frames) goto end;
uwsgi_log("current_frames = %p\n", current_frames);
PyObject *current_frames_items = PyObject_GetAttrString(current_frames, "items");
if (!current_frames_items) goto end;
uwsgi_log("current_frames_items = %p\n", current_frames_items);
PyObject *frames_ret = PyEval_CallObject(current_frames_items, (PyObject *)NULL);
if (!frames_ret) goto end;
uwsgi_log("frames_ret = %p\n", frames_ret);
PyObject *frames_iter = PyObject_GetIter(frames_ret);
uwsgi_log("frames_iter = %p\n", frames_iter);
PyObject *frame = PyIter_Next(frames_iter);
while(frame) {
uwsgi_log("frame = %p\n", frame);
PyObject *stack = PyTuple_GetItem(frame, 1);
uwsgi_log("stack = %p\n", stack);
PyObject *arg_tuple = PyTuple_New(1);
PyTuple_SetItem(arg_tuple, 0, stack);
PyObject *stacktrace = PyEval_CallObject( extract_stack, arg_tuple);
uwsgi_log("stacktrace = %p\n", stacktrace);
PyObject *stacktrace_iter = PyObject_GetIter(stacktrace);
PyObject *st_items = PyIter_Next(stacktrace_iter);
while(st_items) {
uwsgi_log("st_items = %p\n", st_items);
PyObject *st_filename = PyTuple_GetItem(st_items, 0);
PyObject *st_lineno = PyTuple_GetItem(st_items, 1);
PyObject *st_name = PyTuple_GetItem(st_items, 2);
PyObject *st_line = PyTuple_GetItem(st_items, 3);
iov[0].iov_base = "filename = ";
iov[0].iov_len = 11;
iov[1].iov_base = PyString_AsString(st_filename);
iov[1].iov_len = strlen(iov[1].iov_base);
iov[2].iov_base = " lineno = ";
iov[2].iov_len = 10 ;
iov[3].iov_base = uwsgi_num2str(PyInt_AsLong(st_lineno));
iov[3].iov_len = strlen(iov[3].iov_base);
iov[4].iov_base = " function = ";
iov[4].iov_len = 12 ;
iov[5].iov_base = PyString_AsString(st_name);
iov[5].iov_len = strlen(iov[5].iov_base);
iov[6].iov_base = "\n";
iov[6].iov_len = 1 ;
if (st_line) {
}
if (writev(client_fd, iov, 7) < 0) {
uwsgi_error("writev()");
}
st_items = PyIter_Next(stacktrace_iter);
}
frame = PyIter_Next(frames_iter);
}
end:
close(client_fd);
}
return NULL;
cycle:
}
void *uwsgi_python_autoreloader_thread(void *foobar) {
PyObject *new_thread = uwsgi_python_setup_thread("uWSGIAutoReloader");
if (!new_thread) return NULL;
PyObject *modules = PyImport_GetModuleDict();
if (uwsgi.mywid == 1) {
uwsgi_log("Python auto-reloader enabled\n");
}
PyObject *times_dict = PyDict_New();
char *filename;
for(;;) {