mirror of
https://github.com/async-profiler/async-profiler.git
synced 2026-04-28 19:03:33 +00:00
Compare commits
1 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
|
a20d771635 |
21
.github/workflows/cpp.yml
vendored
21
.github/workflows/cpp.yml
vendored
@@ -1,21 +0,0 @@
|
||||
name: C++ CI
|
||||
|
||||
on:
|
||||
- push
|
||||
- pull_request
|
||||
|
||||
jobs:
|
||||
build:
|
||||
runs-on: ubuntu-latest
|
||||
steps:
|
||||
- uses: actions/checkout@v2
|
||||
- uses: actions/setup-java@v2.1.0
|
||||
with:
|
||||
distribution: "adopt"
|
||||
java-version: "11"
|
||||
- run: sudo sysctl kernel.perf_event_paranoid=1
|
||||
- run: make
|
||||
- run: make test
|
||||
- uses: actions/upload-artifact@v2
|
||||
with:
|
||||
path: build/
|
||||
@@ -1,6 +1,6 @@
|
||||
language: cpp
|
||||
|
||||
dist: bionic
|
||||
dist: precise
|
||||
|
||||
sudo: required
|
||||
|
||||
|
||||
20
CHANGELOG.md
20
CHANGELOG.md
@@ -1,35 +1,21 @@
|
||||
# Changelog
|
||||
|
||||
## [2.0] - 2021-03-14
|
||||
## [2.0-b1] - Early access
|
||||
|
||||
### Features
|
||||
- Profile multiple events together (cpu + alloc + lock)
|
||||
- HTML 5 Flame Graphs: faster rendering, smaller size
|
||||
- JFR v2 output format, compatible with FlightRecorder API
|
||||
- JFR to Flame Graph converter
|
||||
- Automatically turn profiling on/off at `--begin`/`--end` functions
|
||||
- Time-to-safepoint profiling: `--ttsp`
|
||||
- Time-to-safepoint profiling
|
||||
|
||||
### Improvements
|
||||
- Unlimited frame buffer. Removed `-b` option and 64K stack traces limit
|
||||
- Additional JFR events: OS, CPU, and JVM information; CPU load
|
||||
- Record bytecode indices / line numbers
|
||||
- Native stack traces for Java events
|
||||
- Improved CLI experience
|
||||
- Better error handling; an option to log warnings/errors to a dedicated stream
|
||||
- Reduced the amount of unknown stack traces
|
||||
- Record CPU load in JFR format
|
||||
|
||||
### Changes
|
||||
- Removed non-ASL code. No more CDDL license
|
||||
|
||||
## [1.8.4] - 2021-02-24
|
||||
|
||||
### Improvements
|
||||
- Smaller and faster agent library
|
||||
|
||||
### Bug fixes
|
||||
- Fixed JDK 7 crash during wall-clock profiling
|
||||
|
||||
## [1.8.3] - 2021-01-06
|
||||
|
||||
### Improvements
|
||||
|
||||
48
Makefile
48
Makefile
@@ -1,4 +1,6 @@
|
||||
PROFILER_VERSION=2.1-ea
|
||||
PROFILER_VERSION=2.0-b1
|
||||
JATTACH_VERSION=1.5
|
||||
JAVAC_RELEASE_VERSION=6
|
||||
|
||||
PACKAGE_NAME=async-profiler-$(PROFILER_VERSION)-$(OS_TAG)-$(ARCH_TAG)
|
||||
PACKAGE_DIR=/tmp/$(PACKAGE_NAME)
|
||||
@@ -9,18 +11,16 @@ JATTACH=jattach
|
||||
API_JAR=async-profiler.jar
|
||||
CONVERTER_JAR=converter.jar
|
||||
|
||||
CFLAGS=-O3 -fno-omit-frame-pointer -momit-leaf-frame-pointer -fvisibility=hidden
|
||||
CXXFLAGS=-O3 -fno-omit-frame-pointer -momit-leaf-frame-pointer -fvisibility=hidden
|
||||
CFLAGS=-O3 -fno-omit-frame-pointer -fvisibility=hidden
|
||||
CXXFLAGS=-O3 -fno-omit-frame-pointer -fvisibility=hidden
|
||||
INCLUDES=-I$(JAVA_HOME)/include
|
||||
LIBS=-ldl -lpthread
|
||||
|
||||
JAVAC=$(JAVA_HOME)/bin/javac
|
||||
JAR=$(JAVA_HOME)/bin/jar
|
||||
JAVAC_RELEASE_VERSION=7
|
||||
|
||||
SOURCES := $(wildcard src/*.cpp)
|
||||
HEADERS := $(wildcard src/*.h)
|
||||
JAVA_HEADERS := $(patsubst %.java,%.class.h,$(wildcard src/helper/one/profiler/*.java))
|
||||
API_SOURCES := $(wildcard src/api/one/profiler/*.java)
|
||||
CONVERTER_SOURCES := $(shell find src/converter -name '*.java')
|
||||
|
||||
@@ -33,13 +33,11 @@ ifeq ($(OS), Darwin)
|
||||
CXXFLAGS += -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE
|
||||
INCLUDES += -I$(JAVA_HOME)/include/darwin
|
||||
SOEXT=dylib
|
||||
PACKAGE_EXT=zip
|
||||
OS_TAG=macos
|
||||
else
|
||||
LIBS += -lrt
|
||||
INCLUDES += -I$(JAVA_HOME)/include/linux
|
||||
SOEXT=so
|
||||
PACKAGE_EXT=tar.gz
|
||||
ifeq ($(findstring musl,$(shell ldd /bin/ls)),musl)
|
||||
OS_TAG=linux-musl
|
||||
else
|
||||
@@ -52,11 +50,7 @@ ifeq ($(ARCH),x86_64)
|
||||
ARCH_TAG=x64
|
||||
else
|
||||
ifeq ($(findstring arm,$(ARCH)),arm)
|
||||
ifeq ($(findstring 64,$(ARCH)),64)
|
||||
ARCH_TAG=aarch64
|
||||
else
|
||||
ARCH_TAG=arm
|
||||
endif
|
||||
ARCH_TAG=arm
|
||||
else
|
||||
ifeq ($(findstring aarch64,$(ARCH)),aarch64)
|
||||
ARCH_TAG=aarch64
|
||||
@@ -71,37 +65,29 @@ endif
|
||||
|
||||
all: build build/$(LIB_PROFILER) build/$(JATTACH) build/$(API_JAR) build/$(CONVERTER_JAR)
|
||||
|
||||
release: build $(PACKAGE_NAME).$(PACKAGE_EXT)
|
||||
release: build $(PACKAGE_NAME).tar.gz
|
||||
|
||||
$(PACKAGE_NAME).tar.gz: $(PACKAGE_DIR)
|
||||
tar cvzf $@ -C $(PACKAGE_DIR)/.. $(PACKAGE_NAME)
|
||||
rm -r $(PACKAGE_DIR)
|
||||
|
||||
$(PACKAGE_NAME).zip: $(PACKAGE_DIR)
|
||||
codesign -s "Developer ID" -o runtime --timestamp -v $(PACKAGE_DIR)/build/$(JATTACH) $(PACKAGE_DIR)/build/$(LIB_PROFILER_SO)
|
||||
ditto -c -k --keepParent $(PACKAGE_DIR) $@
|
||||
rm -r $(PACKAGE_DIR)
|
||||
|
||||
$(PACKAGE_DIR): build/$(LIB_PROFILER) build/$(JATTACH) \
|
||||
build/$(API_JAR) build/$(CONVERTER_JAR) \
|
||||
profiler.sh LICENSE *.md
|
||||
$(PACKAGE_NAME).tar.gz: build/$(LIB_PROFILER) build/$(JATTACH) \
|
||||
build/$(API_JAR) build/$(CONVERTER_JAR) \
|
||||
profiler.sh LICENSE *.md
|
||||
mkdir -p $(PACKAGE_DIR)
|
||||
cp -RP build profiler.sh LICENSE *.md $(PACKAGE_DIR)
|
||||
chmod -R 755 $(PACKAGE_DIR)
|
||||
chmod 644 $(PACKAGE_DIR)/LICENSE $(PACKAGE_DIR)/*.md $(PACKAGE_DIR)/build/*.jar
|
||||
tar cvzf $@ -C $(PACKAGE_DIR)/.. $(PACKAGE_NAME)
|
||||
rm -r $(PACKAGE_DIR)
|
||||
|
||||
%.$(SOEXT): %.so
|
||||
rm -f $@
|
||||
-ln -s $(<F) $@
|
||||
|
||||
build:
|
||||
mkdir -p build
|
||||
|
||||
build/$(LIB_PROFILER_SO): $(SOURCES) $(HEADERS) $(JAVA_HEADERS)
|
||||
build/$(LIB_PROFILER_SO): $(SOURCES) $(HEADERS)
|
||||
$(CXX) $(CXXFLAGS) -DPROFILER_VERSION=\"$(PROFILER_VERSION)\" $(INCLUDES) -fPIC -shared -o $@ $(SOURCES) $(LIBS)
|
||||
|
||||
build/$(JATTACH): src/jattach/jattach.c
|
||||
$(CC) $(CFLAGS) -DJATTACH_VERSION=\"$(PROFILER_VERSION)-ap\" -o $@ $^
|
||||
$(CC) $(CFLAGS) -DJATTACH_VERSION=\"$(JATTACH_VERSION)\" -o $@ $^
|
||||
|
||||
build/$(API_JAR): $(API_SOURCES)
|
||||
mkdir -p build/api
|
||||
@@ -115,12 +101,6 @@ build/$(CONVERTER_JAR): $(CONVERTER_SOURCES) src/converter/MANIFEST.MF
|
||||
$(JAR) cvfm $@ src/converter/MANIFEST.MF -C build/converter .
|
||||
$(RM) -r build/converter
|
||||
|
||||
%.class.h: %.class
|
||||
hexdump -v -e '1/1 "%u,"' $^ > $@
|
||||
|
||||
%.class: %.java
|
||||
$(JAVAC) -g:none -source $(JAVAC_RELEASE_VERSION) -target $(JAVAC_RELEASE_VERSION) $(*D)/*.java
|
||||
|
||||
test: all
|
||||
test/smoke-test.sh
|
||||
test/thread-smoke-test.sh
|
||||
|
||||
566
README.md
566
README.md
@@ -1,5 +1,7 @@
|
||||
# async-profiler
|
||||
|
||||
[](https://travis-ci.org/jvm-profiling-tools/async-profiler)
|
||||
|
||||
This project is a low overhead sampling profiler for Java
|
||||
that does not suffer from [Safepoint bias problem](http://psy-lob-saw.blogspot.ru/2016/02/why-most-sampling-java-profilers-are.html).
|
||||
It features HotSpot-specific APIs to collect stack traces
|
||||
@@ -11,571 +13,41 @@ async-profiler can trace the following kinds of events:
|
||||
- Hardware and Software performance counters like cache misses, branch misses, page faults, context switches etc.
|
||||
- Allocations in Java Heap
|
||||
- Contented lock attempts, including both Java object monitors and ReentrantLocks
|
||||
|
||||
## Usage
|
||||
|
||||
See our [Wiki](https://github.com/jvm-profiling-tools/async-profiler/wiki) or
|
||||
[3 hours playlist](https://www.youtube.com/playlist?list=PLNCLTEx3B8h4Yo_WvKWdLvI9mj1XpTKBr)
|
||||
to learn about all features.
|
||||
See our [Wiki](https://github.com/jvm-profiling-tools/async-profiler/wiki) or [3 hours playlist](https://www.youtube.com/playlist?list=PLNCLTEx3B8h4Yo_WvKWdLvI9mj1XpTKBr) to learn about all set of features.
|
||||
|
||||
## Download
|
||||
|
||||
Current release (2.0):
|
||||
Latest release (1.8.3):
|
||||
|
||||
- Linux x64 (glibc): [async-profiler-2.0-linux-x64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0/async-profiler-2.0-linux-x64.tar.gz)
|
||||
- Linux x86 (glibc): [async-profiler-2.0-linux-x86.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0/async-profiler-2.0-linux-x86.tar.gz)
|
||||
- Linux x64 (musl): [async-profiler-2.0-linux-musl-x64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0/async-profiler-2.0-linux-musl-x64.tar.gz)
|
||||
- Linux ARM: [async-profiler-2.0-linux-arm.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0/async-profiler-2.0-linux-arm.tar.gz)
|
||||
- Linux AArch64: [async-profiler-2.0-linux-aarch64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0/async-profiler-2.0-linux-aarch64.tar.gz)
|
||||
- macOS x64: [async-profiler-2.0-macos-x64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0/async-profiler-2.0-macos-x64.tar.gz)
|
||||
|
||||
- Converters between profile formats: [converter.jar](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0/converter.jar)
|
||||
(JFR to Flame Graph, JFR to FlameScope, collapsed stacks to Flame Graph)
|
||||
- Linux x64 (glibc): [async-profiler-1.8.3-linux-x64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v1.8.3/async-profiler-1.8.3-linux-x64.tar.gz)
|
||||
- Linux x86 (glibc): [async-profiler-1.8.3-linux-x86.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v1.8.3/async-profiler-1.8.3-linux-x86.tar.gz)
|
||||
- Linux x64 (musl): [async-profiler-1.8.3-linux-musl-x64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v1.8.3/async-profiler-1.8.3-linux-musl-x64.tar.gz)
|
||||
- Linux ARM: [async-profiler-1.8.3-linux-arm.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v1.8.3/async-profiler-1.8.3-linux-arm.tar.gz)
|
||||
- Linux AArch64: [async-profiler-1.8.3-linux-aarch64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v1.8.3/async-profiler-1.8.3-linux-aarch64.tar.gz)
|
||||
- macOS x64: [async-profiler-1.8.3-macos-x64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v1.8.3/async-profiler-1.8.3-macos-x64.tar.gz)
|
||||
|
||||
[Early access](https://github.com/jvm-profiling-tools/async-profiler/releases/tag/v2.0-b1) (2.0-b1):
|
||||
|
||||
- Linux x64 (glibc): [async-profiler-2.0-b1-linux-x64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0-b1/async-profiler-2.0-b1-linux-x64.tar.gz)
|
||||
- macOS x64: [async-profiler-2.0-b1-macos-x64.tar.gz](https://github.com/jvm-profiling-tools/async-profiler/releases/download/v2.0-b1/async-profiler-2.0-b1-macos-x64.tar.gz)
|
||||
|
||||
[Previous releases](https://github.com/jvm-profiling-tools/async-profiler/releases)
|
||||
|
||||
Note: async-profiler also comes bundled with IntelliJ IDEA Ultimate 2018.3 and later.
|
||||
For more information refer to [IntelliJ IDEA documentation](https://www.jetbrains.com/help/idea/cpu-profiler.html).
|
||||
|
||||
## Supported platforms
|
||||
|
||||
- **Linux** / x64 / x86 / ARM / AArch64
|
||||
- **macOS** / x64
|
||||
- **Linux** / x64 / x86 / ARM / AArch64
|
||||
- **macOS** / x64
|
||||
|
||||
Note: macOS profiling is limited to user space code only.
|
||||
|
||||
## CPU profiling
|
||||
|
||||
In this mode profiler collects stack trace samples that include **Java** methods,
|
||||
**native** calls, **JVM** code and **kernel** functions.
|
||||
|
||||
The general approach is receiving call stacks generated by `perf_events`
|
||||
and matching them up with call stacks generated by `AsyncGetCallTrace`,
|
||||
in order to produce an accurate profile of both Java and native code.
|
||||
Additionally, async-profiler provides a workaround to recover stack traces
|
||||
in some [corner cases](https://bugs.openjdk.java.net/browse/JDK-8178287)
|
||||
where `AsyncGetCallTrace` fails.
|
||||
|
||||
This approach has the following advantages compared to using `perf_events`
|
||||
directly with a Java agent that translates addresses to Java method names:
|
||||
|
||||
* Works on older Java versions because it doesn't require
|
||||
`-XX:+PreserveFramePointer`, which is only available in JDK 8u60 and later.
|
||||
|
||||
* Does not introduce the performance overhead from `-XX:+PreserveFramePointer`,
|
||||
which can in rare cases be as high as 10%.
|
||||
|
||||
* Does not require generating a map file to map Java code addresses to method
|
||||
names.
|
||||
|
||||
* Works with interpreter frames.
|
||||
|
||||
* Does not require writing out a perf.data file for further processing in
|
||||
user space scripts.
|
||||
|
||||
If you wish to resolve frames within `libjvm`, the [debug symbols](#installing-debug-symbols) are required.
|
||||
|
||||
## ALLOCATION profiling
|
||||
|
||||
Instead of detecting CPU-consuming code, the profiler can be configured
|
||||
to collect call sites where the largest amount of heap memory is allocated.
|
||||
|
||||
async-profiler does not use intrusive techniques like bytecode instrumentation
|
||||
or expensive DTrace probes which have significant performance impact.
|
||||
It also does not affect Escape Analysis or prevent from JIT optimizations
|
||||
like allocation elimination. Only actual heap allocations are measured.
|
||||
|
||||
The profiler features TLAB-driven sampling. It relies on HotSpot-specific
|
||||
callbacks to receive two kinds of notifications:
|
||||
- when an object is allocated in a newly created TLAB (aqua frames in a Flame Graph);
|
||||
- when an object is allocated on a slow path outside TLAB (brown frames).
|
||||
|
||||
This means not each allocation is counted, but only allocations every _N_ kB,
|
||||
where _N_ is the average size of TLAB. This makes heap sampling very cheap
|
||||
and suitable for production. On the other hand, the collected data
|
||||
may be incomplete, though in practice it will often reflect the top allocation
|
||||
sources.
|
||||
|
||||
Sampling interval can be adjusted with `--alloc` option.
|
||||
For example, `--alloc 500k` will take one sample after 500 KB of allocated
|
||||
space on average. However, intervals less than TLAB size will not take effect.
|
||||
|
||||
The minimum supported JDK version is 7u40 where the TLAB callbacks appeared.
|
||||
|
||||
### Installing Debug Symbols
|
||||
|
||||
The allocation profiler requires HotSpot debug symbols. Oracle JDK already has them
|
||||
embedded in `libjvm.so`, but in OpenJDK builds they are typically shipped
|
||||
in a separate package. For example, to install OpenJDK debug symbols on
|
||||
Debian / Ubuntu, run:
|
||||
```
|
||||
# apt install openjdk-8-dbg
|
||||
```
|
||||
or for OpenJDK 11:
|
||||
```
|
||||
# apt install openjdk-11-dbg
|
||||
```
|
||||
|
||||
On CentOS, RHEL and some other RPM-based distributions, this could be done with
|
||||
[debuginfo-install](http://man7.org/linux/man-pages/man1/debuginfo-install.1.html) utility:
|
||||
```
|
||||
# debuginfo-install java-1.8.0-openjdk
|
||||
```
|
||||
|
||||
On Gentoo the `icedtea` OpenJDK package can be built with the per-package setting
|
||||
`FEATURES="nostrip"` to retain symbols.
|
||||
|
||||
The `gdb` tool can be used to verify if the debug symbols are properly installed for the `libjvm` library.
|
||||
For example on Linux:
|
||||
```
|
||||
$ gdb $JAVA_HOME/lib/server/libjvm.so -ex 'info address UseG1GC'
|
||||
```
|
||||
This command's output will either contain `Symbol "UseG1GC" is at 0xxxxx`
|
||||
or `No symbol "UseG1GC" in current context`.
|
||||
|
||||
## Wall-clock profiling
|
||||
|
||||
`-e wall` option tells async-profiler to sample all threads equally every given
|
||||
period of time regardless of thread status: Running, Sleeping or Blocked.
|
||||
For instance, this can be helpful when profiling application start-up time.
|
||||
|
||||
Wall-clock profiler is most useful in per-thread mode: `-t`.
|
||||
|
||||
Example: `./profiler.sh -e wall -t -i 5ms -f result.html 8983`
|
||||
|
||||
## Java method profiling
|
||||
|
||||
`-e ClassName.methodName` option instruments the given Java method
|
||||
in order to record all invocations of this method with the stack traces.
|
||||
|
||||
Example: `-e java.util.Properties.getProperty` will profile all places
|
||||
where `getProperty` method is called from.
|
||||
|
||||
Only non-native Java methods are supported. To profile a native method,
|
||||
use hardware breakpoint event instead, e.g. `-e Java_java_lang_Throwable_fillInStackTrace`
|
||||
|
||||
## Building
|
||||
|
||||
Build status: [](https://travis-ci.org/jvm-profiling-tools/async-profiler)
|
||||
|
||||
Make sure the `JAVA_HOME` environment variable points to your JDK installation,
|
||||
and then run `make`. GCC is required. After building, the profiler agent binary
|
||||
will be in the `build` subdirectory. Additionally, a small application `jattach`
|
||||
that can load the agent into the target process will also be compiled to the
|
||||
`build` subdirectory.
|
||||
|
||||
## Basic Usage
|
||||
|
||||
As of Linux 4.6, capturing kernel call stacks using `perf_events` from a non-root
|
||||
process requires setting two runtime variables. You can set them using
|
||||
sysctl or as follows:
|
||||
|
||||
```
|
||||
# sysctl kernel.perf_event_paranoid=1
|
||||
# sysctl kernel.kptr_restrict=0
|
||||
```
|
||||
|
||||
To run the agent and pass commands to it, the helper script `profiler.sh`
|
||||
is provided. A typical workflow would be to launch your Java application,
|
||||
attach the agent and start profiling, exercise your performance scenario, and
|
||||
then stop profiling. The agent's output, including the profiling results, will
|
||||
be displayed in the Java application's standard output.
|
||||
|
||||
Example:
|
||||
|
||||
```
|
||||
$ jps
|
||||
9234 Jps
|
||||
8983 Computey
|
||||
$ ./profiler.sh start 8983
|
||||
$ ./profiler.sh stop 8983
|
||||
```
|
||||
|
||||
The following may be used in lieu of the `pid` (8983):
|
||||
|
||||
- The keyword `jps`, which will use the most recently launched Java process.
|
||||
- The application name as it appears in the `jps` output: e.g. `Computey`
|
||||
|
||||
Alternatively, you may specify `-d` (duration) argument to profile
|
||||
the application for a fixed period of time with a single command.
|
||||
|
||||
```
|
||||
$ ./profiler.sh -d 30 8983
|
||||
```
|
||||
|
||||
By default, the profiling frequency is 100Hz (every 10ms of CPU time).
|
||||
Here is a sample of the output printed to the Java application's terminal:
|
||||
|
||||
```
|
||||
--- Execution profile ---
|
||||
Total samples: 687
|
||||
Unknown (native): 1 (0.15%)
|
||||
|
||||
--- 6790000000 (98.84%) ns, 679 samples
|
||||
[ 0] Primes.isPrime
|
||||
[ 1] Primes.primesThread
|
||||
[ 2] Primes.access$000
|
||||
[ 3] Primes$1.run
|
||||
[ 4] java.lang.Thread.run
|
||||
|
||||
... a lot of output omitted for brevity ...
|
||||
|
||||
ns percent samples top
|
||||
---------- ------- ------- ---
|
||||
6790000000 98.84% 679 Primes.isPrime
|
||||
40000000 0.58% 4 __do_softirq
|
||||
|
||||
... more output omitted ...
|
||||
```
|
||||
|
||||
This indicates that the hottest method was `Primes.isPrime`, and the hottest
|
||||
call stack leading to it comes from `Primes.primesThread`.
|
||||
|
||||
## Launching as an Agent
|
||||
|
||||
If you need to profile some code as soon as the JVM starts up, instead of using the `profiler.sh` script,
|
||||
it is possible to attach async-profiler as an agent on the command line. For example:
|
||||
|
||||
```
|
||||
$ java -agentpath:/path/to/libasyncProfiler.so=start,event=cpu,file=profile.html ...
|
||||
```
|
||||
|
||||
Agent library is configured through the JVMTI argument interface.
|
||||
The format of the arguments string is described
|
||||
[in the source code](https://github.com/jvm-profiling-tools/async-profiler/blob/v2.0/src/arguments.cpp#L44).
|
||||
The `profiler.sh` script actually converts command line arguments to that format.
|
||||
|
||||
For instance, `-e wall` is converted to `event=wall`, `-f profile.html`
|
||||
is converted to `file=profile.html`, and so on. However, some arguments are processed
|
||||
directly by `profiler.sh` script. E.g. `-d 5` results in 3 actions:
|
||||
attaching profiler agent with start command, sleeping for 5 seconds,
|
||||
and then attaching the agent again with stop command.
|
||||
|
||||
## Multiple events
|
||||
|
||||
It is possible to profile CPU, allocations, and locks at the same time.
|
||||
Or, instead of CPU, you may choose any other execution event: wall-clock,
|
||||
perf event, tracepoint, Java method, etc.
|
||||
|
||||
The only output format that supports multiple events together is JFR.
|
||||
The recording will contain the following event types:
|
||||
- `jdk.ExecutionSample`
|
||||
- `jdk.ObjectAllocationInNewTLAB` (alloc)
|
||||
- `jdk.ObjectAllocationOutsideTLAB` (alloc)
|
||||
- `jdk.JavaMonitorEnter` (lock)
|
||||
- `jdk.ThreadPark` (lock)
|
||||
|
||||
To start profiling cpu + allocations + locks together, specify
|
||||
```
|
||||
./profiler.sh -e cpu,alloc,lock -f profile.jfr ...
|
||||
```
|
||||
or use `--alloc` and `--lock` parameters with the desired threshold:
|
||||
```
|
||||
./profiler.sh -e cpu --alloc 2m --lock 10ms -f profile.jfr ...
|
||||
```
|
||||
The same, when starting profiler as an agent:
|
||||
```
|
||||
-agentpath:/path/to/libasyncProfiler.so=start,event=cpu,alloc=2m,lock=10ms,file=profile.jfr
|
||||
```
|
||||
|
||||
## Flame Graph visualization
|
||||
|
||||
async-profiler provides out-of-the-box [Flame Graph](https://github.com/BrendanGregg/FlameGraph) support.
|
||||
Specify `-o flamegraph` argument to dump profiling results as an interactive HTML Flame Graph.
|
||||
Also, Flame Graph output format will be chosen automatically if the target filename ends with `.html`.
|
||||
|
||||
```
|
||||
$ jps
|
||||
9234 Jps
|
||||
8983 Computey
|
||||
$ ./profiler.sh -d 30 -f /tmp/flamegraph.html 8983
|
||||
```
|
||||
|
||||
[](https://htmlpreview.github.io/?https://github.com/jvm-profiling-tools/async-profiler/blob/master/demo/flamegraph.html)
|
||||
|
||||
## Profiler Options
|
||||
|
||||
The following is a complete list of the command-line options accepted by
|
||||
`profiler.sh` script.
|
||||
|
||||
* `start` - starts profiling in semi-automatic mode, i.e. profiler will run
|
||||
until `stop` command is explicitly called.
|
||||
|
||||
* `resume` - starts or resumes earlier profiling session that has been stopped.
|
||||
All the collected data remains valid. The profiling options are not preserved
|
||||
between sessions, and should be specified again.
|
||||
|
||||
* `stop` - stops profiling and prints the report.
|
||||
|
||||
* `check` - check if the specified profiling event is available.
|
||||
|
||||
* `status` - prints profiling status: whether profiler is active and
|
||||
for how long.
|
||||
|
||||
* `list` - show the list of available profiling events. This option still
|
||||
requires PID, since supported events may differ depending on JVM version.
|
||||
|
||||
* `-d N` - the profiling duration, in seconds. If no `start`, `resume`, `stop`
|
||||
or `status` option is given, the profiler will run for the specified period
|
||||
of time and then automatically stop.
|
||||
Example: `./profiler.sh -d 30 8983`
|
||||
|
||||
* `-e event` - the profiling event: `cpu`, `alloc`, `lock`, `cache-misses` etc.
|
||||
Use `list` to see the complete list of available events.
|
||||
|
||||
In allocation profiling mode the top frame of every call trace is the class
|
||||
of the allocated object, and the counter is the heap pressure (the total size
|
||||
of allocated TLABs or objects outside TLAB).
|
||||
|
||||
In lock profiling mode the top frame is the class of lock/monitor, and
|
||||
the counter is number of nanoseconds it took to enter this lock/monitor.
|
||||
|
||||
Two special event types are supported on Linux: hardware breakpoints
|
||||
and kernel tracepoints:
|
||||
- `-e mem:<func>[:rwx]` sets read/write/exec breakpoint at function
|
||||
`<func>`. The format of `mem` event is the same as in `perf-record`.
|
||||
Execution breakpoints can be also specified by the function name,
|
||||
e.g. `-e malloc` will trace all calls of native `malloc` function.
|
||||
- `-e trace:<id>` sets a kernel tracepoint. It is possible to specify
|
||||
tracepoint symbolic name, e.g. `-e syscalls:sys_enter_open` will trace
|
||||
all `open` syscalls.
|
||||
|
||||
* `-i N` - sets the profiling interval in nanoseconds or in other units,
|
||||
if N is followed by `ms` (for milliseconds), `us` (for microseconds),
|
||||
or `s` (for seconds). Only CPU active time is counted. No samples
|
||||
are collected while CPU is idle. The default is 10000000 (10ms).
|
||||
Example: `./profiler.sh -i 500us 8983`
|
||||
|
||||
* `--alloc N` - allocation profiling interval in bytes or in other units,
|
||||
if N is followed by `k` (kilobytes), `m` (megabytes), or `g` (gigabytes).
|
||||
|
||||
* `--lock N` - lock profiling threshold in nanoseconds (or other units).
|
||||
In lock profiling mode, record contended locks that the JVM has waited for
|
||||
longer than the specified duration.
|
||||
|
||||
* `-j N` - sets the Java stack profiling depth. This option will be ignored if N is greater
|
||||
than default 2048.
|
||||
Example: `./profiler.sh -j 30 8983`
|
||||
|
||||
* `-t` - profile threads separately. Each stack trace will end with a frame
|
||||
that denotes a single thread.
|
||||
Example: `./profiler.sh -t 8983`
|
||||
|
||||
* `-s` - print simple class names instead of FQN.
|
||||
|
||||
* `-g` - print method signatures.
|
||||
|
||||
* `-a` - annotate Java method names by adding `_[j]` suffix.
|
||||
|
||||
* `-o fmt` - specifies what information to dump when profiling ends.
|
||||
`fmt` can be one of the following options:
|
||||
- `traces[=N]` - dump call traces (at most N samples);
|
||||
- `flat[=N]` - dump flat profile (top N hot methods);
|
||||
can be combined with `traces`, e.g. `traces=200,flat=200`
|
||||
- `jfr` - dump events in Java Flight Recorder format readable by Java Mission Control.
|
||||
This *does not* require JDK commercial features to be enabled.
|
||||
- `collapsed` - dump collapsed call traces in the format used by
|
||||
[FlameGraph](https://github.com/brendangregg/FlameGraph) script. This is
|
||||
a collection of call stacks, where each line is a semicolon separated list
|
||||
of frames followed by a counter.
|
||||
- `flamegraph` - produce Flame Graph in HTML format.
|
||||
- `tree` - produce Call Tree in HTML format.
|
||||
`--reverse` option will generate backtrace view.
|
||||
|
||||
* `--total` - count the total value of the collected metric instead of the number of samples,
|
||||
e.g. total allocation size.
|
||||
|
||||
* `-I include`, `-X exclude` - filter stack traces by the given pattern(s).
|
||||
`-I` defines the name pattern that *must* be present in the stack traces,
|
||||
while `-X` is the pattern that *must not* occur in any of stack traces in the output.
|
||||
`-I` and `-X` options can be specified multiple times. A pattern may begin or end with
|
||||
a star `*` that denotes any (possibly empty) sequence of characters.
|
||||
Example: `./profiler.sh -I 'Primes.*' -I 'java/*' -X '*Unsafe.park*' 8983`
|
||||
|
||||
* `--title TITLE`, `--minwidth PERCENT`, `--reverse` - FlameGraph parameters.
|
||||
Example: `./profiler.sh -f profile.html --title "Sample CPU profile" --minwidth 0.5 8983`
|
||||
|
||||
* `-f FILENAME` - the file name to dump the profile information to.
|
||||
`%p` in the file name is expanded to the PID of the target JVM;
|
||||
`%t` - to the timestamp at the time of command invocation.
|
||||
Example: `./profiler.sh -o collapsed -f /tmp/traces-%t.txt 8983`
|
||||
|
||||
* `--all-user` - include only user-mode events. This option is helpful when kernel profiling
|
||||
is restricted by `perf_event_paranoid` settings.
|
||||
|
||||
* `--cstack MODE` - how to traverse native frames (C stack). Possible modes are
|
||||
`fp` (Frame Pointer), `lbr` (Last Branch Record, available on Haswell since Linux 4.1),
|
||||
and `no` (do not collect C stack).
|
||||
|
||||
By default, C stack is shown in cpu, itimer, wall-clock and perf-events profiles.
|
||||
Java-level events like `alloc` and `lock` collect only Java stack.
|
||||
|
||||
* `--begin function`, `--end function` - automatically start/stop profiling
|
||||
when the specified native function is executed.
|
||||
|
||||
* `--ttsp` - time-to-safepoint profiling. An alias for
|
||||
`--begin SafepointSynchronize::begin --end RuntimeService::record_safepoint_synchronized`
|
||||
It is not a separate event type, but rather a constraint. Whatever event type
|
||||
you choose (e.g. `cpu` or `wall`), the profiler will work as usual, except that
|
||||
only events between the safepoint request and the start of the VM operation
|
||||
will be recorded.
|
||||
|
||||
* `-v`, `--version` - prints the version of profiler library. If PID is specified,
|
||||
gets the version of the library loaded into the given process.
|
||||
|
||||
## Profiling Java in a container
|
||||
|
||||
It is possible to profile Java processes running in a Docker or LXC container
|
||||
both from within a container and from the host system.
|
||||
|
||||
When profiling from the host, `pid` should be the Java process ID in the host
|
||||
namespace. Use `ps aux | grep java` or `docker top <container>` to find
|
||||
the process ID.
|
||||
|
||||
async-profiler should be run from the host by a privileged user - it will
|
||||
automatically switch to the proper pid/mount namespace and change
|
||||
user credentials to match the target process. Also make sure that
|
||||
the target container can access `libasyncProfiler.so` by the same
|
||||
absolute path as on the host.
|
||||
|
||||
By default, Docker container restricts the access to `perf_event_open`
|
||||
syscall. So, in order to allow profiling inside a container, you'll need
|
||||
to modify [seccomp profile](https://docs.docker.com/engine/security/seccomp/)
|
||||
or disable it altogether with `--security-opt seccomp=unconfined` option. In
|
||||
addition, `--cap-add SYS_ADMIN` may be required.
|
||||
|
||||
Alternatively, if changing Docker configuration is not possible,
|
||||
you may fall back to `-e itimer` profiling mode, see [Troubleshooting](#troubleshooting).
|
||||
|
||||
## Restrictions/Limitations
|
||||
|
||||
* On most Linux systems, `perf_events` captures call stacks with a maximum depth
|
||||
of 127 frames. On recent Linux kernels, this can be configured using
|
||||
`sysctl kernel.perf_event_max_stack` or by writing to the
|
||||
`/proc/sys/kernel/perf_event_max_stack` file.
|
||||
|
||||
* Profiler allocates 8kB perf_event buffer for each thread of the target process.
|
||||
Make sure `/proc/sys/kernel/perf_event_mlock_kb` value is large enough
|
||||
(more than `8 * threads`) when running under unprivileged user.
|
||||
Otherwise the message _"perf_event mmap failed: Operation not permitted"_
|
||||
will be printed, and no native stack traces will be collected.
|
||||
|
||||
* There is no bullet-proof guarantee that the `perf_events` overflow signal
|
||||
is delivered to the Java thread in a way that guarantees no other code has run,
|
||||
which means that in some rare cases, the captured Java stack might not match
|
||||
the captured native (user+kernel) stack.
|
||||
|
||||
* You will not see the non-Java frames _preceding_ the Java frames on the
|
||||
stack. For example, if `start_thread` called `JavaMain` and then your Java
|
||||
code started running, you will not see the first two frames in the resulting
|
||||
stack. On the other hand, you _will_ see non-Java frames (user and kernel)
|
||||
invoked by your Java code.
|
||||
|
||||
* No Java stacks will be collected if `-XX:MaxJavaStackTraceDepth` is zero
|
||||
or negative.
|
||||
|
||||
* Too short profiling interval may cause continuous interruption of heavy
|
||||
system calls like `clone()`, so that it will never complete;
|
||||
see [#97](https://github.com/jvm-profiling-tools/async-profiler/issues/97).
|
||||
The workaround is simply to increase the interval.
|
||||
|
||||
* When agent is not loaded at JVM startup (by using -agentpath option) it is
|
||||
highly recommended to use `-XX:+UnlockDiagnosticVMOptions -XX:+DebugNonSafepoints` JVM flags.
|
||||
Without those flags the profiler will still work correctly but results might be
|
||||
less accurate. For example, without `-XX:+DebugNonSafepoints` there is a high chance
|
||||
that simple inlined methods will not appear in the profile. When the agent is attached at runtime,
|
||||
`CompiledMethodLoad` JVMTI event enables debug info, but only for methods compiled after attaching.
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
```
|
||||
Failed to change credentials to match the target process: Operation not permitted
|
||||
```
|
||||
Due to limitation of HotSpot Dynamic Attach mechanism, the profiler must be run
|
||||
by exactly the same user (and group) as the owner of target JVM process.
|
||||
If profiler is run by a different user, it will try to automatically change
|
||||
current user and group. This will likely succeed for `root`, but not for
|
||||
other users, resulting in the above error.
|
||||
|
||||
```
|
||||
Could not start attach mechanism: No such file or directory
|
||||
```
|
||||
The profiler cannot establish communication with the target JVM through UNIX domain socket.
|
||||
|
||||
Usually this happens in one of the following cases:
|
||||
1. Attach socket `/tmp/.java_pidNNN` has been deleted. It is a common
|
||||
practice to clean `/tmp` automatically with some scheduled script.
|
||||
Configure the cleanup software to exclude `.java_pid*` files from deletion.
|
||||
How to check: run `lsof -p PID | grep java_pid`
|
||||
If it lists a socket file, but the file does not exist, then this is exactly
|
||||
the described problem.
|
||||
2. JVM is started with `-XX:+DisableAttachMechanism` option.
|
||||
3. `/tmp` directory of Java process is not physically the same directory
|
||||
as `/tmp` of your shell, because Java is running in a container or in
|
||||
`chroot` environment. `jattach` attempts to solve this automatically,
|
||||
but it might lack the required permissions to do so.
|
||||
Check `strace build/jattach PID properties`
|
||||
4. JVM is busy and cannot reach a safepoint. For instance,
|
||||
JVM is in the middle of long-running garbage collection.
|
||||
How to check: run `kill -3 PID`. Healthy JVM process should print
|
||||
a thread dump and heap info in its console.
|
||||
|
||||
```
|
||||
Failed to inject profiler into <pid>
|
||||
```
|
||||
The connection with the target JVM has been established, but JVM is unable to load profiler shared library.
|
||||
Make sure the user of JVM process has permissions to access `libasyncProfiler.so` by exactly the same absolute path.
|
||||
For more information see [#78](https://github.com/jvm-profiling-tools/async-profiler/issues/78).
|
||||
|
||||
```
|
||||
No access to perf events. Try --all-user option or 'sysctl kernel.perf_event_paranoid=1'
|
||||
```
|
||||
or
|
||||
```
|
||||
Perf events unavailable
|
||||
```
|
||||
`perf_event_open()` syscall has failed.
|
||||
|
||||
Typical reasons include:
|
||||
1. `/proc/sys/kernel/perf_event_paranoid` is set to restricted mode (>=2).
|
||||
2. seccomp disables perf_event_open API in a container.
|
||||
3. OS runs under a hypervisor that does not virtualize performance counters.
|
||||
4. perf_event_open API is not supported on this system, e.g. WSL.
|
||||
|
||||
If changing the configuration is not possible, you may fall back to
|
||||
`-e itimer` profiling mode. It is similar to `cpu` mode, but does not
|
||||
require perf_events support. As a drawback, there will be no kernel
|
||||
stack traces.
|
||||
|
||||
```
|
||||
No AllocTracer symbols found. Are JDK debug symbols installed?
|
||||
```
|
||||
The OpenJDK debug symbols are required for allocation profiling.
|
||||
See [Installing Debug Symbols](#installing-debug-symbols) for more details.
|
||||
If the error message persists after a successful installation of the debug symbols,
|
||||
it is possible that the JDK was upgraded when installing the debug symbols.
|
||||
In this case, profiling any Java process which had started prior to the installation
|
||||
will continue to display this message, since the process had loaded
|
||||
the older version of the JDK which lacked debug symbols.
|
||||
Restarting the affected Java processes should resolve the issue.
|
||||
|
||||
```
|
||||
VMStructs unavailable. Unsupported JVM?
|
||||
```
|
||||
JVM shared library does not export `gHotSpotVMStructs*` symbols -
|
||||
apparently this is not a HotSpot JVM. Sometimes the same message
|
||||
can be also caused by an incorrectly built JDK
|
||||
(see [#218](https://github.com/jvm-profiling-tools/async-profiler/issues/218)).
|
||||
In these cases installing JDK debug symbols may solve the problem.
|
||||
|
||||
```
|
||||
Could not parse symbols from <libname.so>
|
||||
```
|
||||
Async-profiler was unable to parse non-Java function names because of
|
||||
the corrupted contents in `/proc/[pid]/maps`. The problem is known to
|
||||
occur in a container when running Ubuntu with Linux kernel 5.x.
|
||||
This is the OS bug, see https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1843018.
|
||||
|
||||
```
|
||||
Could not open output file
|
||||
```
|
||||
Output file is written by the target JVM process, not by the profiler script.
|
||||
Make sure the path specified in `-f` option is correct and is accessible by the JVM.
|
||||
|
||||
2247
demo/SwingSet2.svg
Normal file
2247
demo/SwingSet2.svg
Normal file
File diff suppressed because it is too large
Load Diff
|
After Width: | Height: | Size: 141 KiB |
@@ -1,877 +0,0 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang='en'>
|
||||
<head>
|
||||
<meta charset='utf-8'>
|
||||
<style>
|
||||
body {margin: 0; padding: 10px; background-color: #ffffff}
|
||||
h1 {margin: 5px 0 0 0; font-size: 18px; font-weight: normal; text-align: center}
|
||||
header {margin: -24px 0 5px 0; line-height: 24px}
|
||||
button {font: 12px sans-serif; cursor: pointer}
|
||||
p {margin: 5px 0 5px 0}
|
||||
a {color: #0366d6}
|
||||
#hl {position: absolute; display: none; overflow: hidden; white-space: nowrap; pointer-events: none; background-color: #ffffe0; outline: 1px solid #ffc000; height: 15px}
|
||||
#hl span {padding: 0 3px 0 3px}
|
||||
#status {overflow: hidden; white-space: nowrap}
|
||||
#match {overflow: hidden; white-space: nowrap; display: none; float: right; text-align: right}
|
||||
#reset {cursor: pointer}
|
||||
</style>
|
||||
</head>
|
||||
<body style='font: 12px Verdana, sans-serif'>
|
||||
<h1>Flame Graph</h1>
|
||||
<header style='text-align: left'><button id='reverse' title='Reverse'>🔻</button> <button id='search' title='Search'>🔍</button></header>
|
||||
<header style='text-align: right'>Produced by <a href='https://github.com/jvm-profiling-tools/async-profiler'>async-profiler</a></header>
|
||||
<canvas id='canvas' style='width: 100%; height: 752px'></canvas>
|
||||
<div id='hl'><span></span></div>
|
||||
<p id='match'>Matched: <span id='matchval'></span> <span id='reset' title='Clear'>❌</span></p>
|
||||
<p id='status'> </p>
|
||||
<script>
|
||||
// Copyright 2020 Andrei Pangin
|
||||
// Licensed under the Apache License, Version 2.0.
|
||||
'use strict';
|
||||
var root, rootLevel, px, pattern;
|
||||
var reverse = false;
|
||||
const levels = Array(47);
|
||||
for (let h = 0; h < levels.length; h++) {
|
||||
levels[h] = [];
|
||||
}
|
||||
|
||||
const canvas = document.getElementById('canvas');
|
||||
const c = canvas.getContext('2d');
|
||||
const hl = document.getElementById('hl');
|
||||
const status = document.getElementById('status');
|
||||
|
||||
const canvasWidth = canvas.offsetWidth;
|
||||
const canvasHeight = canvas.offsetHeight;
|
||||
canvas.style.width = canvasWidth + 'px';
|
||||
canvas.width = canvasWidth * (devicePixelRatio || 1);
|
||||
canvas.height = canvasHeight * (devicePixelRatio || 1);
|
||||
if (devicePixelRatio) c.scale(devicePixelRatio, devicePixelRatio);
|
||||
c.font = document.body.style.font;
|
||||
|
||||
const palette = [
|
||||
[0x50e150, 30, 30, 30],
|
||||
[0x50bebe, 30, 30, 30],
|
||||
[0xe17d00, 30, 30, 0],
|
||||
[0xc8c83c, 30, 30, 10],
|
||||
[0xe15a5a, 30, 40, 40],
|
||||
];
|
||||
|
||||
function getColor(p) {
|
||||
const v = Math.random();
|
||||
return '#' + (p[0] + ((p[1] * v) << 16 | (p[2] * v) << 8 | (p[3] * v))).toString(16);
|
||||
}
|
||||
|
||||
function f(level, left, width, type, title) {
|
||||
levels[level].push({left: left, width: width, color: getColor(palette[type]), title: title});
|
||||
}
|
||||
|
||||
function samples(n) {
|
||||
return n === 1 ? '1 sample' : n.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',') + ' samples';
|
||||
}
|
||||
|
||||
function pct(a, b) {
|
||||
return a >= b ? '100' : (100 * a / b).toFixed(2);
|
||||
}
|
||||
|
||||
function findFrame(frames, x) {
|
||||
let left = 0;
|
||||
let right = frames.length - 1;
|
||||
|
||||
while (left <= right) {
|
||||
const mid = (left + right) >>> 1;
|
||||
const f = frames[mid];
|
||||
|
||||
if (f.left > x) {
|
||||
right = mid - 1;
|
||||
} else if (f.left + f.width <= x) {
|
||||
left = mid + 1;
|
||||
} else {
|
||||
return f;
|
||||
}
|
||||
}
|
||||
|
||||
if (frames[left] && (frames[left].left - x) * px < 0.5) return frames[left];
|
||||
if (frames[right] && (x - (frames[right].left + frames[right].width)) * px < 0.5) return frames[right];
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
function search(r) {
|
||||
if (r && (r = prompt('Enter regexp to search:', '')) === null) {
|
||||
return;
|
||||
}
|
||||
|
||||
pattern = r ? RegExp(r) : undefined;
|
||||
const matched = render(root, rootLevel);
|
||||
document.getElementById('matchval').textContent = pct(matched, root.width) + '%';
|
||||
document.getElementById('match').style.display = r ? 'inherit' : 'none';
|
||||
}
|
||||
|
||||
function render(newRoot, newLevel) {
|
||||
if (root) {
|
||||
c.fillStyle = '#ffffff';
|
||||
c.fillRect(0, 0, canvasWidth, canvasHeight);
|
||||
}
|
||||
|
||||
root = newRoot || levels[0][0];
|
||||
rootLevel = newLevel || 0;
|
||||
px = canvasWidth / root.width;
|
||||
|
||||
const x0 = root.left;
|
||||
const x1 = x0 + root.width;
|
||||
const marked = [];
|
||||
|
||||
function mark(f) {
|
||||
return marked[f.left] >= f.width || (marked[f.left] = f.width);
|
||||
}
|
||||
|
||||
function totalMarked() {
|
||||
let total = 0;
|
||||
let left = 0;
|
||||
for (let x in marked) {
|
||||
if (+x >= left) {
|
||||
total += marked[x];
|
||||
left = +x + marked[x];
|
||||
}
|
||||
}
|
||||
return total;
|
||||
}
|
||||
|
||||
function drawFrame(f, y, alpha) {
|
||||
if (f.left < x1 && f.left + f.width > x0) {
|
||||
c.fillStyle = pattern && f.title.match(pattern) && mark(f) ? '#ee00ee' : f.color;
|
||||
c.fillRect((f.left - x0) * px, y, f.width * px, 15);
|
||||
|
||||
if (f.width * px >= 21) {
|
||||
const chars = Math.floor(f.width * px / 7);
|
||||
const title = f.title.length <= chars ? f.title : f.title.substring(0, chars - 2) + '..';
|
||||
c.fillStyle = '#000000';
|
||||
c.fillText(title, Math.max(f.left - x0, 0) * px + 3, y + 12, f.width * px - 6);
|
||||
}
|
||||
|
||||
if (alpha) {
|
||||
c.fillStyle = 'rgba(255, 255, 255, 0.5)';
|
||||
c.fillRect((f.left - x0) * px, y, f.width * px, 15);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (let h = 0; h < levels.length; h++) {
|
||||
const y = reverse ? h * 16 : canvasHeight - (h + 1) * 16;
|
||||
const frames = levels[h];
|
||||
for (let i = 0; i < frames.length; i++) {
|
||||
drawFrame(frames[i], y, h < rootLevel);
|
||||
}
|
||||
}
|
||||
|
||||
return totalMarked();
|
||||
}
|
||||
|
||||
canvas.onmousemove = function() {
|
||||
const h = Math.floor((reverse ? event.offsetY : (canvasHeight - event.offsetY)) / 16);
|
||||
if (h >= 0 && h < levels.length) {
|
||||
const f = findFrame(levels[h], event.offsetX / px + root.left);
|
||||
if (f) {
|
||||
hl.style.left = (Math.max(f.left - root.left, 0) * px + canvas.offsetLeft) + 'px';
|
||||
hl.style.width = (Math.min(f.width, root.width) * px) + 'px';
|
||||
hl.style.top = ((reverse ? h * 16 : canvasHeight - (h + 1) * 16) + canvas.offsetTop) + 'px';
|
||||
hl.firstChild.textContent = f.title;
|
||||
hl.style.display = 'block';
|
||||
canvas.title = f.title + '\n(' + samples(f.width) + ', ' + pct(f.width, levels[0][0].width) + '%)';
|
||||
canvas.style.cursor = 'pointer';
|
||||
canvas.onclick = function() {
|
||||
if (f != root) {
|
||||
render(f, h);
|
||||
canvas.onmousemove();
|
||||
}
|
||||
};
|
||||
status.textContent = 'Function: ' + canvas.title;
|
||||
return;
|
||||
}
|
||||
}
|
||||
canvas.onmouseout();
|
||||
}
|
||||
|
||||
canvas.onmouseout = function() {
|
||||
hl.style.display = 'none';
|
||||
status.textContent = '\xa0';
|
||||
canvas.title = '';
|
||||
canvas.style.cursor = '';
|
||||
canvas.onclick = '';
|
||||
}
|
||||
|
||||
document.getElementById('reverse').onclick = function() {
|
||||
reverse = !reverse;
|
||||
render();
|
||||
}
|
||||
|
||||
document.getElementById('search').onclick = function() {
|
||||
search(true);
|
||||
}
|
||||
|
||||
document.getElementById('reset').onclick = function() {
|
||||
search(false);
|
||||
}
|
||||
|
||||
window.onkeydown = function() {
|
||||
if (event.ctrlKey && event.keyCode === 70) {
|
||||
event.preventDefault();
|
||||
search(true);
|
||||
} else if (event.keyCode === 27) {
|
||||
search(false);
|
||||
}
|
||||
}
|
||||
f(0,0,641,4,'all')
|
||||
f(1,0,5,0,'com/sun/glass/ui/InvokeLaterDispatcher.run')
|
||||
f(2,0,4,0,'com/sun/glass/ui/gtk/GtkApplication.submitForLaterInvocation')
|
||||
f(3,0,4,0,'com/sun/glass/ui/gtk/GtkApplication._submitForLaterInvocation')
|
||||
f(4,0,4,4,'Java_com_sun_glass_ui_gtk_GtkApplication__1submitForLaterInvocation')
|
||||
f(5,0,4,4,'__write')
|
||||
f(6,0,4,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(7,0,4,2,'do_syscall_64')
|
||||
f(8,0,4,2,'__x64_sys_write')
|
||||
f(9,0,4,2,'ksys_write')
|
||||
f(10,0,4,2,'vfs_write')
|
||||
f(11,0,4,2,'__vfs_write')
|
||||
f(12,0,4,2,'eventfd_write')
|
||||
f(1,5,408,0,'java/lang/Thread.run')
|
||||
f(2,5,179,0,'com/sun/glass/ui/gtk/GtkApplication$$Lambda$42/1642360923.run')
|
||||
f(3,5,179,0,'com/sun/glass/ui/gtk/GtkApplication.lambda$null$48')
|
||||
f(4,5,179,0,'com/sun/glass/ui/gtk/GtkApplication._runLoop')
|
||||
f(5,5,4,4,'Java_com_sun_glass_ui_gtk_GtkApplication__1runLoop')
|
||||
f(6,6,2,4,'__writev')
|
||||
f(7,6,2,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(8,6,2,2,'do_syscall_64')
|
||||
f(9,6,2,2,'__x64_sys_writev')
|
||||
f(10,6,2,2,'do_writev')
|
||||
f(11,6,2,2,'vfs_writev')
|
||||
f(12,6,2,2,'do_iter_write')
|
||||
f(13,6,2,2,'do_iter_readv_writev')
|
||||
f(14,6,2,2,'sock_write_iter')
|
||||
f(15,6,2,2,'sock_sendmsg')
|
||||
f(16,6,2,2,'inet_sendmsg')
|
||||
f(17,6,2,2,'tcp_sendmsg')
|
||||
f(18,6,2,2,'tcp_sendmsg_locked')
|
||||
f(19,6,2,2,'tcp_push')
|
||||
f(20,6,2,2,'__tcp_push_pending_frames')
|
||||
f(21,6,2,2,'tcp_write_xmit')
|
||||
f(22,6,2,2,'__tcp_transmit_skb')
|
||||
f(23,6,2,2,'ip_queue_xmit')
|
||||
f(24,6,2,2,'__ip_queue_xmit')
|
||||
f(25,6,2,2,'ip_local_out')
|
||||
f(26,6,2,2,'ip_output')
|
||||
f(27,6,2,2,'ip_finish_output')
|
||||
f(28,6,2,2,'__ip_finish_output')
|
||||
f(29,6,2,2,'ip_finish_output2')
|
||||
f(30,6,2,2,'dev_queue_xmit')
|
||||
f(31,6,2,2,'__dev_queue_xmit')
|
||||
f(32,6,2,2,'sch_direct_xmit')
|
||||
f(33,6,2,2,'dev_hard_start_xmit')
|
||||
f(34,6,2,2,'e1000_xmit_frame?[e1000]')
|
||||
f(5,10,161,0,'com/sun/glass/ui/InvokeLaterDispatcher$Future.run')
|
||||
f(6,10,6,3,'InterpreterRuntime::monitorexit(JavaThread*, BasicObjectLock*)')
|
||||
f(7,10,6,3,'ObjectMonitor::ExitEpilog(Thread*, ObjectWaiter*)')
|
||||
f(8,10,6,4,'pthread_cond_signal@@GLIBC_2.3.2')
|
||||
f(9,10,6,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(10,10,6,2,'do_syscall_64')
|
||||
f(11,10,6,2,'__x64_sys_futex')
|
||||
f(12,10,6,2,'do_futex')
|
||||
f(13,10,6,2,'wake_up_q')
|
||||
f(14,10,6,2,'try_to_wake_up')
|
||||
f(15,10,6,2,'_raw_spin_unlock_irqrestore')
|
||||
f(6,16,58,0,'com/sun/javafx/application/PlatformImpl$$Lambda$53/233530418.run')
|
||||
f(7,16,58,0,'com/sun/javafx/application/PlatformImpl.lambda$runLater$173')
|
||||
f(8,17,57,0,'java/security/AccessController.doPrivileged')
|
||||
f(9,17,57,0,'com/sun/javafx/application/PlatformImpl$$Lambda$54/1140247440.run')
|
||||
f(10,17,57,0,'com/sun/javafx/application/PlatformImpl.lambda$null$172')
|
||||
f(11,17,55,0,'com/sun/javafx/application/PlatformImpl$$Lambda$52/1364335809.run')
|
||||
f(12,17,55,0,'com/sun/javafx/application/PlatformImpl.lambda$runAndWait$174')
|
||||
f(13,17,4,0,'com/sun/javafx/application/LauncherImpl$$Lambda$57/1790390841.run')
|
||||
f(14,17,4,0,'com/sun/javafx/application/LauncherImpl.lambda$launchApplication1$160')
|
||||
f(15,17,4,0,'java/lang/reflect/Constructor.newInstance')
|
||||
f(16,17,4,0,'sun/reflect/DelegatingConstructorAccessorImpl.newInstance')
|
||||
f(17,17,4,0,'sun/reflect/NativeConstructorAccessorImpl.newInstance')
|
||||
f(18,17,4,0,'sun/reflect/NativeConstructorAccessorImpl.newInstance0')
|
||||
f(19,17,4,0,'demo/parallel/Main.<init>')
|
||||
f(20,17,2,0,'java/lang/ClassLoader.loadClass')
|
||||
f(21,17,2,0,'java/lang/ClassLoader.loadClass')
|
||||
f(22,17,2,0,'java/net/URLClassLoader.findClass')
|
||||
f(23,17,2,0,'java/security/AccessController.doPrivileged')
|
||||
f(24,17,2,0,'java/net/URLClassLoader$1.run')
|
||||
f(25,17,2,0,'java/net/URLClassLoader$1.run')
|
||||
f(26,17,2,0,'java/net/URLClassLoader.access$100')
|
||||
f(27,17,2,0,'java/net/URLClassLoader.defineClass')
|
||||
f(28,17,2,0,'java/security/SecureClassLoader.defineClass')
|
||||
f(13,21,50,0,'com/sun/javafx/application/LauncherImpl$$Lambda$63/508611611.run')
|
||||
f(14,21,50,0,'com/sun/javafx/application/LauncherImpl.lambda$launchApplication1$161')
|
||||
f(15,21,49,0,'demo/parallel/Main.start')
|
||||
f(16,22,17,0,'demo/parallel/Main.createContent')
|
||||
f(17,23,14,0,'demo/parallel/Main.createControlPane')
|
||||
f(18,26,8,0,'javafx/scene/control/Control.<clinit>')
|
||||
f(19,26,8,0,'com/sun/javafx/application/PlatformImpl.setDefaultPlatformUserAgentStylesheet')
|
||||
f(20,26,8,0,'com/sun/javafx/application/PlatformImpl.setPlatformUserAgentStylesheet')
|
||||
f(21,26,8,0,'com/sun/javafx/application/PlatformImpl._setPlatformUserAgentStylesheet')
|
||||
f(22,27,7,0,'java/security/AccessController.doPrivileged')
|
||||
f(23,27,7,0,'com/sun/javafx/application/PlatformImpl$$Lambda$68/360857571.run')
|
||||
f(24,27,7,0,'com/sun/javafx/application/PlatformImpl.lambda$_setPlatformUserAgentStylesheet$181')
|
||||
f(25,27,7,0,'com/sun/javafx/css/StyleManager.setUserAgentStylesheets')
|
||||
f(26,27,6,0,'com/sun/javafx/css/StyleManager._setDefaultUserAgentStylesheet')
|
||||
f(27,28,5,0,'com/sun/javafx/css/StyleManager.loadStylesheet')
|
||||
f(28,28,5,0,'com/sun/javafx/css/StyleManager.loadStylesheetUnPrivileged')
|
||||
f(29,28,2,0,'com/sun/javafx/css/StyleManager.getURL')
|
||||
f(30,28,2,0,'java/lang/Class.forName')
|
||||
f(31,28,2,0,'java/lang/Class.forName0')
|
||||
f(32,28,2,0,'com/sun/javafx/scene/control/skin/Utils.<clinit>')
|
||||
f(29,30,3,0,'com/sun/javafx/css/Stylesheet.loadBinary')
|
||||
f(30,30,3,0,'com/sun/javafx/css/Stylesheet.readBinary')
|
||||
f(31,30,3,0,'com/sun/javafx/css/Rule.readBinary')
|
||||
f(32,30,3,0,'com/sun/javafx/css/Selector.readBinary')
|
||||
f(33,30,2,0,'com/sun/javafx/css/CompoundSelector.readBinary')
|
||||
f(16,40,11,0,'javafx/scene/Scene.<init>')
|
||||
f(17,40,11,0,'javafx/scene/Scene.<init>')
|
||||
f(18,40,11,0,'javafx/scene/Scene.setRoot')
|
||||
f(19,40,11,0,'javafx/beans/property/ObjectPropertyBase.set')
|
||||
f(20,40,11,0,'javafx/beans/property/ObjectPropertyBase.markInvalid')
|
||||
f(21,40,11,0,'javafx/scene/Scene$9.invalidated')
|
||||
f(22,40,11,0,'javafx/scene/Node.setScenes')
|
||||
f(23,40,11,0,'javafx/scene/Node.invalidatedScenes')
|
||||
f(24,40,11,0,'javafx/scene/Node.impl_reapplyCSS')
|
||||
f(25,41,10,0,'javafx/scene/Node.reapplyCss')
|
||||
f(26,42,3,0,'javafx/scene/CssStyleHelper.<clinit>')
|
||||
f(27,42,3,0,'javafx/scene/text/Font.getDefault')
|
||||
f(28,42,3,0,'javafx/scene/text/Font.<init>')
|
||||
f(29,42,3,0,'com/sun/javafx/font/PrismFontLoader.loadFont')
|
||||
f(30,42,2,0,'com/sun/javafx/font/PrismFontFactory.createFont')
|
||||
f(31,42,2,0,'com/sun/javafx/font/LogicalFont.getLogicalFont')
|
||||
f(32,42,2,0,'com/sun/javafx/font/LogicalFont.getLogicalFont')
|
||||
f(33,42,2,0,'com/sun/javafx/font/LogicalFont.<init>')
|
||||
f(34,42,2,0,'com/sun/javafx/font/FontConfigManager.getFontConfigFont')
|
||||
f(35,42,2,0,'com/sun/javafx/font/FontConfigManager.initFontConfigLogFonts')
|
||||
f(36,42,2,0,'com/sun/javafx/font/FontConfigManager.getFontConfig')
|
||||
f(26,45,2,0,'javafx/scene/CssStyleHelper.createStyleHelper')
|
||||
f(26,47,4,0,'javafx/scene/Node.reapplyCss')
|
||||
f(27,47,3,0,'javafx/scene/CssStyleHelper.createStyleHelper')
|
||||
f(28,47,3,0,'com/sun/javafx/css/StyleManager.findMatchingStyles')
|
||||
f(29,47,3,0,'com/sun/javafx/css/StyleManager.gatherParentStylesheets')
|
||||
f(30,47,3,0,'com/sun/javafx/css/StyleManager.processStylesheets')
|
||||
f(31,47,3,0,'com/sun/javafx/css/StyleManager.loadStylesheet')
|
||||
f(32,47,3,0,'com/sun/javafx/css/StyleManager.loadStylesheetUnPrivileged')
|
||||
f(33,48,2,0,'com/sun/javafx/css/parser/CSSParser.parse')
|
||||
f(34,48,2,0,'com/sun/javafx/css/parser/CSSParser.parse')
|
||||
f(16,51,19,0,'javafx/stage/Stage.show')
|
||||
f(17,51,19,0,'javafx/stage/Window.show')
|
||||
f(18,51,19,0,'javafx/stage/Window.setShowing')
|
||||
f(19,51,19,0,'javafx/beans/property/BooleanPropertyBase.set')
|
||||
f(20,51,19,0,'javafx/beans/property/BooleanPropertyBase.markInvalid')
|
||||
f(21,51,19,0,'javafx/stage/Window$9.invalidated')
|
||||
f(22,52,3,0,'javafx/scene/Scene.impl_initPeer')
|
||||
f(22,55,14,0,'javafx/scene/Scene.impl_preferredSize')
|
||||
f(23,55,14,0,'javafx/scene/Scene.preferredSize')
|
||||
f(24,55,11,0,'javafx/scene/Scene.doCSSPass')
|
||||
f(25,55,11,0,'javafx/scene/Node.processCSS')
|
||||
f(26,55,11,0,'javafx/scene/Parent.impl_processCSS')
|
||||
f(27,56,10,0,'javafx/scene/Parent.impl_processCSS')
|
||||
f(28,56,10,0,'javafx/scene/control/Control.impl_processCSS')
|
||||
f(29,56,3,0,'javafx/scene/Parent.impl_processCSS')
|
||||
f(30,56,3,0,'javafx/scene/Node.impl_processCSS')
|
||||
f(31,56,3,0,'javafx/scene/CssStyleHelper.transitionToState')
|
||||
f(29,59,4,0,'javafx/scene/control/Button.createDefaultSkin')
|
||||
f(30,59,4,0,'com/sun/javafx/scene/control/skin/ButtonSkin.<init>')
|
||||
f(31,59,4,0,'com/sun/javafx/scene/control/skin/LabeledSkinBase.<init>')
|
||||
f(32,61,2,0,'com/sun/javafx/scene/control/skin/LabeledText.<init>')
|
||||
f(33,61,2,0,'javafx/css/StyleableObjectProperty.bind')
|
||||
f(34,61,2,0,'javafx/beans/property/ObjectPropertyBase.bind')
|
||||
f(35,61,2,0,'javafx/beans/property/ObjectPropertyBase.markInvalid')
|
||||
f(36,61,2,0,'javafx/scene/text/Text$5.invalidated')
|
||||
f(37,61,2,0,'javafx/scene/text/Text.access$200')
|
||||
f(38,61,2,0,'javafx/scene/text/Text.needsFullTextLayout')
|
||||
f(39,61,2,0,'javafx/scene/text/Text.getTextLayout')
|
||||
f(40,61,2,0,'com/sun/javafx/text/PrismTextLayout.setContent')
|
||||
f(41,61,2,0,'com/sun/javafx/font/PrismFont.getStrike')
|
||||
f(42,61,2,0,'com/sun/javafx/font/LogicalFont.getStrike')
|
||||
f(43,61,2,0,'com/sun/javafx/font/LogicalFont.getDefaultAAMode')
|
||||
f(44,61,2,0,'com/sun/javafx/font/LogicalFont.getSlot0Resource')
|
||||
f(45,61,2,0,'com/sun/javafx/font/PrismFontFactory.getFontResource')
|
||||
f(46,61,2,0,'com/sun/javafx/font/PrismFontFactory.getFullNameToFileMap')
|
||||
f(29,64,2,0,'javafx/scene/control/ProgressIndicator.createDefaultSkin')
|
||||
f(24,67,2,0,'javafx/scene/Scene.resizeRootToPreferredSize')
|
||||
f(25,67,2,0,'javafx/scene/Scene.getPreferredWidth')
|
||||
f(26,67,2,0,'javafx/scene/layout/Region.prefWidth')
|
||||
f(27,67,2,0,'javafx/scene/Parent.prefWidth')
|
||||
f(28,67,2,0,'javafx/scene/layout/Region.computePrefWidth')
|
||||
f(29,67,2,0,'javafx/scene/Parent.computePrefWidth')
|
||||
f(30,67,2,0,'javafx/scene/layout/Region.prefWidth')
|
||||
f(31,67,2,0,'javafx/scene/Parent.prefWidth')
|
||||
f(32,67,2,0,'javafx/scene/layout/GridPane.computePrefWidth')
|
||||
f(33,67,2,0,'javafx/scene/layout/GridPane.computePrefWidths')
|
||||
f(34,67,2,0,'javafx/scene/layout/Region.computeChildPrefAreaWidth')
|
||||
f(35,67,2,0,'javafx/scene/layout/Region.minWidth')
|
||||
f(36,67,2,0,'javafx/scene/Parent.minWidth')
|
||||
f(37,67,2,0,'javafx/scene/control/Control.computeMinWidth')
|
||||
f(38,67,2,0,'com/sun/javafx/scene/control/skin/LabeledSkinBase.computeMinWidth')
|
||||
f(39,67,2,0,'com/sun/javafx/scene/control/skin/LabeledSkinBase.computeMinLabeledPartWidth')
|
||||
f(40,67,2,0,'com/sun/javafx/scene/control/skin/Utils.computeTextWidth')
|
||||
f(41,67,2,0,'com/sun/javafx/text/PrismTextLayout.getBounds')
|
||||
f(42,67,2,0,'com/sun/javafx/text/PrismTextLayout.ensureLayout')
|
||||
f(43,67,2,0,'com/sun/javafx/text/PrismTextLayout.layout')
|
||||
f(44,67,2,0,'com/sun/javafx/text/PrismTextLayout.buildRuns')
|
||||
f(45,67,2,0,'com/sun/javafx/text/GlyphLayout.breakRuns')
|
||||
f(6,74,12,0,'com/sun/javafx/tk/quantum/QuantumToolkit$$Lambda$46/1696939523.run')
|
||||
f(7,74,12,0,'com/sun/javafx/tk/quantum/QuantumToolkit.lambda$runToolkit$403')
|
||||
f(8,74,12,0,'com/sun/javafx/tk/quantum/QuantumToolkit.pulseFromQueue')
|
||||
f(9,74,12,0,'com/sun/javafx/tk/quantum/QuantumToolkit.pulse')
|
||||
f(10,74,12,0,'com/sun/javafx/tk/quantum/QuantumToolkit.pulse')
|
||||
f(11,74,8,0,'com/sun/javafx/tk/Toolkit.firePulse')
|
||||
f(12,74,6,0,'com/sun/javafx/tk/Toolkit.runPulse')
|
||||
f(13,74,6,0,'java/security/AccessController.doPrivileged')
|
||||
f(14,74,6,0,'com/sun/javafx/tk/Toolkit$$Lambda$193/1813875389.run')
|
||||
f(15,74,6,0,'com/sun/javafx/tk/Toolkit.lambda$runPulse$29')
|
||||
f(16,74,6,0,'javafx/scene/Scene$ScenePulseListener.pulse')
|
||||
f(17,76,4,0,'javafx/scene/Scene.doLayoutPass')
|
||||
f(18,76,4,0,'javafx/scene/Parent.layout')
|
||||
f(19,76,4,0,'demo/parallel/Main$1.layoutChildren')
|
||||
f(20,76,4,0,'javafx/scene/Parent.layoutChildren')
|
||||
f(21,76,4,0,'javafx/scene/Node.autosize')
|
||||
f(22,76,2,0,'javafx/scene/layout/Region.prefHeight')
|
||||
f(23,76,2,0,'javafx/scene/Parent.prefHeight')
|
||||
f(24,76,2,0,'javafx/scene/layout/GridPane.computePrefHeight')
|
||||
f(25,76,2,0,'javafx/scene/layout/GridPane.computePrefHeights')
|
||||
f(22,78,2,0,'javafx/scene/layout/Region.prefWidth')
|
||||
f(23,78,2,0,'javafx/scene/Parent.prefWidth')
|
||||
f(24,78,2,0,'javafx/scene/layout/GridPane.computePrefWidth')
|
||||
f(25,78,2,0,'javafx/scene/layout/GridPane.computePrefWidths')
|
||||
f(11,82,3,0,'com/sun/javafx/tk/quantum/PaintCollector.renderAll')
|
||||
f(12,82,3,0,'com/sun/javafx/tk/quantum/ViewScene.repaint')
|
||||
f(13,82,3,0,'com/sun/javafx/tk/quantum/QuantumToolkit.addRenderJob')
|
||||
f(14,82,3,0,'com/sun/javafx/tk/quantum/QuantumRenderer.submitRenderJob')
|
||||
f(15,82,3,0,'java/util/concurrent/AbstractExecutorService.submit')
|
||||
f(16,82,3,0,'java/util/concurrent/ThreadPoolExecutor.execute')
|
||||
f(17,82,3,0,'java/util/concurrent/LinkedBlockingQueue.offer')
|
||||
f(18,82,3,0,'java/util/concurrent/LinkedBlockingQueue.signalNotEmpty')
|
||||
f(19,82,3,0,'java/util/concurrent/locks/ReentrantLock.unlock')
|
||||
f(20,82,3,0,'java/util/concurrent/locks/AbstractQueuedSynchronizer.release')
|
||||
f(21,82,3,0,'java/util/concurrent/locks/AbstractQueuedSynchronizer.unparkSuccessor')
|
||||
f(22,82,3,0,'java/util/concurrent/locks/LockSupport.unpark')
|
||||
f(23,82,3,0,'sun/misc/Unsafe.unpark')
|
||||
f(24,82,3,4,'Unsafe_Unpark')
|
||||
f(25,82,3,4,'pthread_cond_signal@@GLIBC_2.3.2')
|
||||
f(26,82,3,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(27,82,3,2,'do_syscall_64')
|
||||
f(28,82,3,2,'__x64_sys_futex')
|
||||
f(29,82,3,2,'do_futex')
|
||||
f(30,82,3,2,'wake_up_q')
|
||||
f(31,82,3,2,'try_to_wake_up')
|
||||
f(32,82,3,2,'_raw_spin_unlock_irqrestore')
|
||||
f(6,86,85,0,'com/sun/javafx/tk/quantum/SceneState$$Lambda$205/1725489206.run')
|
||||
f(7,86,85,0,'com/sun/javafx/tk/quantum/SceneState.lambda$uploadPixels$305')
|
||||
f(8,86,85,0,'com/sun/javafx/tk/quantum/SceneState.access$001')
|
||||
f(9,86,85,0,'com/sun/prism/PresentableState.uploadPixels')
|
||||
f(10,86,85,0,'com/sun/glass/ui/View.uploadPixels')
|
||||
f(11,86,85,0,'com/sun/glass/ui/gtk/GtkView._uploadPixels')
|
||||
f(12,86,85,0,'com/sun/glass/ui/gtk/GtkView._uploadPixelsDirect')
|
||||
f(13,86,85,4,'Java_com_sun_glass_ui_gtk_GtkView__1uploadPixelsDirect')
|
||||
f(14,86,85,4,'__writev')
|
||||
f(15,86,85,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(16,86,85,2,'do_syscall_64')
|
||||
f(17,86,85,2,'__x64_sys_writev')
|
||||
f(18,86,85,2,'do_writev')
|
||||
f(19,86,85,2,'vfs_writev')
|
||||
f(20,86,85,2,'do_iter_write')
|
||||
f(21,86,85,2,'do_iter_readv_writev')
|
||||
f(22,86,85,2,'sock_write_iter')
|
||||
f(23,86,85,2,'sock_sendmsg')
|
||||
f(24,86,85,2,'inet_sendmsg')
|
||||
f(25,86,85,2,'tcp_sendmsg')
|
||||
f(26,86,3,2,'lock_sock_nested')
|
||||
f(27,86,3,2,'_raw_spin_lock_bh')
|
||||
f(28,86,3,2,'queued_spin_lock_slowpath')
|
||||
f(29,86,3,2,'native_queued_spin_lock_slowpath')
|
||||
f(26,90,81,2,'tcp_sendmsg_locked')
|
||||
f(27,90,3,2,'__sk_flush_backlog')
|
||||
f(28,90,3,2,'__release_sock')
|
||||
f(29,90,3,2,'tcp_v4_do_rcv')
|
||||
f(30,90,3,2,'tcp_rcv_established')
|
||||
f(31,90,3,2,'__tcp_push_pending_frames')
|
||||
f(32,90,3,2,'tcp_write_xmit')
|
||||
f(33,90,3,2,'__tcp_transmit_skb')
|
||||
f(34,90,3,2,'ip_queue_xmit')
|
||||
f(35,90,3,2,'__ip_queue_xmit')
|
||||
f(36,90,3,2,'ip_local_out')
|
||||
f(37,90,3,2,'ip_output')
|
||||
f(38,90,3,2,'ip_finish_output')
|
||||
f(39,90,3,2,'__ip_finish_output')
|
||||
f(40,90,3,2,'ip_finish_output2')
|
||||
f(41,90,3,2,'dev_queue_xmit')
|
||||
f(42,90,3,2,'__dev_queue_xmit')
|
||||
f(43,90,3,2,'sch_direct_xmit')
|
||||
f(44,90,3,2,'dev_hard_start_xmit')
|
||||
f(45,90,3,2,'e1000_xmit_frame?[e1000]')
|
||||
f(27,93,78,2,'tcp_push_one')
|
||||
f(28,93,78,2,'tcp_write_xmit')
|
||||
f(29,93,78,2,'__tcp_transmit_skb')
|
||||
f(30,93,78,2,'ip_queue_xmit')
|
||||
f(31,93,78,2,'__ip_queue_xmit')
|
||||
f(32,93,78,2,'ip_local_out')
|
||||
f(33,93,78,2,'ip_output')
|
||||
f(34,93,78,2,'ip_finish_output')
|
||||
f(35,93,78,2,'__ip_finish_output')
|
||||
f(36,93,78,2,'ip_finish_output2')
|
||||
f(37,93,9,2,'__local_bh_enable_ip')
|
||||
f(38,93,9,2,'do_softirq')
|
||||
f(39,93,9,2,'do_softirq_own_stack')
|
||||
f(40,93,9,2,'__softirqentry_text_start')
|
||||
f(41,93,9,2,'net_rx_action')
|
||||
f(42,93,9,2,'e1000_clean?[e1000]')
|
||||
f(37,102,69,2,'dev_queue_xmit')
|
||||
f(38,102,69,2,'__dev_queue_xmit')
|
||||
f(39,102,69,2,'sch_direct_xmit')
|
||||
f(40,102,69,2,'dev_hard_start_xmit')
|
||||
f(41,102,69,2,'e1000_xmit_frame?[e1000]')
|
||||
f(5,171,3,0,'com/sun/glass/ui/View.notifyMouse')
|
||||
f(6,171,3,0,'com/sun/glass/ui/View.handleMouseEvent')
|
||||
f(7,171,3,0,'com/sun/javafx/tk/quantum/GlassViewEventHandler.handleMouseEvent')
|
||||
f(8,171,3,0,'com/sun/javafx/tk/quantum/QuantumToolkit.runWithoutRenderLock')
|
||||
f(9,171,3,0,'com/sun/javafx/tk/quantum/GlassViewEventHandler$$Lambda$181/241733715.get')
|
||||
f(10,171,3,0,'com/sun/javafx/tk/quantum/GlassViewEventHandler.lambda$handleMouseEvent$353')
|
||||
f(11,171,3,0,'java/security/AccessController.doPrivileged')
|
||||
f(12,171,3,0,'com/sun/javafx/tk/quantum/GlassViewEventHandler$MouseEventNotification.run')
|
||||
f(13,171,3,0,'com/sun/javafx/tk/quantum/GlassViewEventHandler$MouseEventNotification.run')
|
||||
f(14,171,3,0,'javafx/scene/Scene$ScenePeerListener.mouseEvent')
|
||||
f(15,171,3,0,'javafx/scene/Scene.impl_processMouseEvent')
|
||||
f(16,171,3,0,'javafx/scene/Scene$MouseHandler.access$1500')
|
||||
f(17,171,3,0,'javafx/scene/Scene$MouseHandler.process')
|
||||
f(18,172,2,0,'javafx/scene/Scene.access$6700')
|
||||
f(19,172,2,0,'javafx/scene/Scene.pick')
|
||||
f(20,172,2,0,'javafx/scene/Scene$MouseHandler.access$1600')
|
||||
f(21,172,2,0,'javafx/scene/Scene$MouseHandler.pickNode')
|
||||
f(22,172,2,0,'javafx/scene/Node.impl_pickNode')
|
||||
f(23,172,2,0,'javafx/scene/layout/Region.impl_pickNodeLocal')
|
||||
f(5,174,2,0,'com/sun/javafx/tk/quantum/QuantumToolkit$$Lambda$47/605813029.run')
|
||||
f(6,174,2,0,'com/sun/javafx/tk/quantum/QuantumToolkit.lambda$runToolkit$404')
|
||||
f(7,174,2,0,'com/sun/javafx/tk/quantum/QuantumToolkit.postPulse')
|
||||
f(8,174,2,0,'com/sun/glass/ui/Application.invokeLater')
|
||||
f(9,174,2,0,'com/sun/glass/ui/gtk/GtkApplication._invokeLater')
|
||||
f(10,174,2,0,'com/sun/glass/ui/InvokeLaterDispatcher.invokeLater')
|
||||
f(11,174,2,0,'java/util/concurrent/LinkedBlockingDeque.addLast')
|
||||
f(12,174,2,0,'java/util/concurrent/LinkedBlockingDeque.offerLast')
|
||||
f(13,174,2,0,'java/util/concurrent/locks/ReentrantLock.unlock')
|
||||
f(14,174,2,0,'java/util/concurrent/locks/AbstractQueuedSynchronizer.release')
|
||||
f(15,174,2,0,'java/util/concurrent/locks/AbstractQueuedSynchronizer.unparkSuccessor')
|
||||
f(16,174,2,0,'java/util/concurrent/locks/LockSupport.unpark')
|
||||
f(17,174,2,0,'sun/misc/Unsafe.unpark')
|
||||
f(18,174,2,4,'Unsafe_Unpark')
|
||||
f(19,174,2,4,'pthread_cond_signal@@GLIBC_2.3.2')
|
||||
f(20,174,2,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(21,174,2,2,'do_syscall_64')
|
||||
f(22,174,2,2,'__x64_sys_futex')
|
||||
f(23,174,2,2,'do_futex')
|
||||
f(24,174,2,2,'wake_up_q')
|
||||
f(25,174,2,2,'try_to_wake_up')
|
||||
f(26,174,2,2,'_raw_spin_unlock_irqrestore')
|
||||
f(5,176,8,4,'recvmsg')
|
||||
f(6,176,8,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(7,176,8,2,'do_syscall_64')
|
||||
f(8,176,8,2,'__x64_sys_recvmsg')
|
||||
f(9,176,8,2,'__sys_recvmsg')
|
||||
f(10,176,8,2,'___sys_recvmsg')
|
||||
f(11,176,8,2,'sock_recvmsg')
|
||||
f(12,176,8,2,'inet_recvmsg')
|
||||
f(13,176,8,2,'tcp_recvmsg')
|
||||
f(14,176,3,2,'lock_sock_nested')
|
||||
f(15,176,3,2,'_raw_spin_lock_bh')
|
||||
f(16,176,3,2,'queued_spin_lock_slowpath')
|
||||
f(17,176,3,2,'native_queued_spin_lock_slowpath')
|
||||
f(14,180,4,2,'tcp_cleanup_rbuf')
|
||||
f(15,180,4,2,'tcp_send_ack')
|
||||
f(16,180,4,2,'__tcp_send_ack.part.45')
|
||||
f(17,180,4,2,'__tcp_transmit_skb')
|
||||
f(18,180,4,2,'ip_queue_xmit')
|
||||
f(19,180,4,2,'__ip_queue_xmit')
|
||||
f(20,180,4,2,'ip_local_out')
|
||||
f(21,180,4,2,'ip_output')
|
||||
f(22,180,4,2,'ip_finish_output')
|
||||
f(23,180,4,2,'__ip_finish_output')
|
||||
f(24,180,4,2,'ip_finish_output2')
|
||||
f(25,180,4,2,'dev_queue_xmit')
|
||||
f(26,180,4,2,'__dev_queue_xmit')
|
||||
f(27,180,4,2,'sch_direct_xmit')
|
||||
f(28,180,4,2,'dev_hard_start_xmit')
|
||||
f(29,180,4,2,'e1000_xmit_frame?[e1000]')
|
||||
f(2,184,45,0,'com/sun/javafx/tk/quantum/QuantumRenderer$PipelineRunnable.run')
|
||||
f(3,184,45,0,'java/util/concurrent/ThreadPoolExecutor$Worker.run')
|
||||
f(4,184,45,0,'java/util/concurrent/ThreadPoolExecutor.runWorker')
|
||||
f(5,184,45,0,'com/sun/javafx/tk/RenderJob.run')
|
||||
f(6,184,45,0,'java/util/concurrent/FutureTask.runAndReset')
|
||||
f(7,184,45,0,'java/util/concurrent/Executors$RunnableAdapter.call')
|
||||
f(8,184,45,0,'com/sun/javafx/tk/quantum/UploadingPainter.run')
|
||||
f(9,184,2,0,'com/sun/javafx/tk/quantum/SceneState.uploadPixels')
|
||||
f(10,184,2,0,'com/sun/glass/ui/Application.invokeLater')
|
||||
f(11,184,2,0,'com/sun/glass/ui/gtk/GtkApplication._invokeLater')
|
||||
f(12,184,2,0,'com/sun/glass/ui/InvokeLaterDispatcher.invokeLater')
|
||||
f(13,184,2,0,'java/util/concurrent/LinkedBlockingDeque.addLast')
|
||||
f(14,184,2,0,'java/util/concurrent/LinkedBlockingDeque.offerLast')
|
||||
f(15,184,2,0,'java/util/concurrent/locks/ReentrantLock.unlock')
|
||||
f(16,184,2,0,'java/util/concurrent/locks/AbstractQueuedSynchronizer.release')
|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
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|
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||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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||||
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||||
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|
||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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||||
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||||
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||||
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|
||||
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||||
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||||
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||||
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|
||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
f(9,613,15,3,'Compile::Optimize()')
|
||||
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|
||||
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|
||||
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|
||||
f(11,625,2,3,'PhaseIterGVN::optimize()')
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
f(14,629,3,3,'Parse::do_call()')
|
||||
f(15,630,2,3,'PredictedCallGenerator::generate(JVMState*)')
|
||||
f(16,630,2,3,'ParseGenerator::generate(JVMState*)')
|
||||
f(17,630,2,3,'Parse::Parse(JVMState*, ciMethod*, float)')
|
||||
f(18,630,2,3,'Parse::do_all_blocks()')
|
||||
f(19,630,2,3,'Parse::do_one_block()')
|
||||
f(20,630,2,3,'Parse::do_one_bytecode()')
|
||||
f(21,630,2,3,'Parse::do_call()')
|
||||
f(9,632,6,3,'ciEnv::register_method(ciMethod*, int, CodeOffsets*, int, CodeBuffer*, int, OopMapSet*, ExceptionHandlerTable*, ImplicitExceptionTable*, AbstractCompiler*, int, bool, bool, RTMState)')
|
||||
f(10,632,6,3,'nmethod::post_compiled_method_load_event()')
|
||||
f(11,632,6,4,'pthread_cond_signal@@GLIBC_2.3.2')
|
||||
f(12,632,6,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(13,632,6,2,'do_syscall_64')
|
||||
f(14,632,6,2,'__x64_sys_futex')
|
||||
f(15,632,6,2,'do_futex')
|
||||
f(16,632,6,2,'wake_up_q')
|
||||
f(17,632,6,2,'try_to_wake_up')
|
||||
f(18,632,6,2,'_raw_spin_unlock_irqrestore')
|
||||
f(6,638,3,3,'CompileQueue::get()')
|
||||
f(7,638,3,4,'pthread_cond_signal@@GLIBC_2.3.2')
|
||||
f(8,638,3,2,'entry_SYSCALL_64_after_hwframe')
|
||||
f(9,638,3,2,'do_syscall_64')
|
||||
f(10,638,3,2,'__x64_sys_futex')
|
||||
f(11,638,3,2,'do_futex')
|
||||
f(12,638,3,2,'wake_up_q')
|
||||
f(13,638,3,2,'try_to_wake_up')
|
||||
f(14,638,3,2,'_raw_spin_unlock_irqrestore')
|
||||
render();
|
||||
</script></body></html>
|
||||
Binary file not shown.
|
Before Width: | Height: | Size: 170 KiB |
2
pom.xml
2
pom.xml
@@ -3,7 +3,7 @@
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<groupId>tools.profiler</groupId>
|
||||
<artifactId>async-profiler</artifactId>
|
||||
<version>2.0</version>
|
||||
<version>1.8.3</version>
|
||||
<packaging>jar</packaging>
|
||||
|
||||
<name>async-profiler</name>
|
||||
|
||||
71
profiler.sh
71
profiler.sh
@@ -7,6 +7,7 @@ usage() {
|
||||
echo " start start profiling and return immediately"
|
||||
echo " resume resume profiling without resetting collected data"
|
||||
echo " stop stop profiling"
|
||||
echo " jstack get a thread dump"
|
||||
echo " check check if the specified profiling event is available"
|
||||
echo " status print profiling status"
|
||||
echo " list list profiling events supported by the target JVM"
|
||||
@@ -22,7 +23,7 @@ usage() {
|
||||
echo " -s simple class names instead of FQN"
|
||||
echo " -g print method signatures"
|
||||
echo " -a annotate Java method names"
|
||||
echo " -o fmt output format: flat|traces|collapsed|flamegraph|tree|jfr"
|
||||
echo " -o fmt output format: flat|collapsed|html|tree|jfr"
|
||||
echo " -I include output only stack traces containing the specified pattern"
|
||||
echo " -X exclude exclude stack traces with the specified pattern"
|
||||
echo " -v, --version display version string"
|
||||
@@ -31,20 +32,17 @@ usage() {
|
||||
echo " --minwidth pct skip frames smaller than pct%"
|
||||
echo " --reverse generate stack-reversed FlameGraph / Call tree"
|
||||
echo ""
|
||||
echo " --alloc bytes allocation profiling interval in bytes"
|
||||
echo " --lock duration lock profiling threshold in nanoseconds"
|
||||
echo " --total accumulate the total value (time, bytes, etc.)"
|
||||
echo " --all-kernel only include kernel-mode events"
|
||||
echo " --all-user only include user-mode events"
|
||||
echo " --cstack mode how to traverse C stack: fp|lbr|no"
|
||||
echo " --begin function begin profiling when function is executed"
|
||||
echo " --end function end profiling when function is executed"
|
||||
echo " --ttsp time-to-safepoint profiling"
|
||||
echo ""
|
||||
echo "<pid> is a numeric process ID of the target JVM"
|
||||
echo " or 'jps' keyword to find running JVM automatically"
|
||||
echo " or the application's name as it would appear in the jps tool"
|
||||
echo ""
|
||||
echo "Example: $0 -d 30 -f profile.html 3456"
|
||||
echo "Example: $0 -d 30 -f profile.svg 3456"
|
||||
echo " $0 start -i 999000 jps"
|
||||
echo " $0 stop -o flat jps"
|
||||
echo " $0 -d 5 -e alloc MyAppName"
|
||||
@@ -57,9 +55,6 @@ mirror_output() {
|
||||
if [ -f "$FILE" ]; then
|
||||
cat "$FILE"
|
||||
rm "$FILE"
|
||||
elif [ -f "$ROOT_PREFIX$FILE" ]; then
|
||||
cat "$ROOT_PREFIX$FILE"
|
||||
rm "$ROOT_PREFIX$FILE"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
@@ -73,35 +68,24 @@ check_if_terminated() {
|
||||
|
||||
jattach() {
|
||||
set +e
|
||||
"$JATTACH" "$PID" load "$PROFILER" true "$1,log=$LOG" > /dev/null
|
||||
"$JATTACH" "$PID" load "$PROFILER" true "$1" > /dev/null
|
||||
RET=$?
|
||||
set -e
|
||||
|
||||
# Check if jattach failed
|
||||
if [ $RET -ne 0 ]; then
|
||||
if [ $RET -eq 255 ]; then
|
||||
echo "Failed to inject profiler into $PID"
|
||||
if [ "$UNAME_S" = "Darwin" ]; then
|
||||
if [ "$(uname -s)" = "Darwin" ]; then
|
||||
otool -L "$PROFILER"
|
||||
else
|
||||
LD_PRELOAD="$PROFILER" /bin/true
|
||||
ldd "$PROFILER"
|
||||
fi
|
||||
fi
|
||||
|
||||
# Try to access the log file both directly and through /proc/[pid]/root,
|
||||
# in case the target namespace differs
|
||||
if [ -f "$LOG" ]; then
|
||||
cat "$LOG" >&2
|
||||
rm "$LOG"
|
||||
elif [ -f "$ROOT_PREFIX$LOG" ]; then
|
||||
cat "$ROOT_PREFIX$LOG" >&2
|
||||
rm "$ROOT_PREFIX$LOG"
|
||||
fi
|
||||
exit $RET
|
||||
fi
|
||||
|
||||
rm -f "$LOG" "$ROOT_PREFIX$LOG"
|
||||
mirror_output
|
||||
set -e
|
||||
}
|
||||
|
||||
OPTIND=1
|
||||
@@ -109,6 +93,7 @@ SCRIPT_DIR="$(cd "$(dirname "$0")" > /dev/null 2>&1; pwd -P)"
|
||||
JATTACH=$SCRIPT_DIR/build/jattach
|
||||
PROFILER=$SCRIPT_DIR/build/libasyncProfiler.so
|
||||
ACTION="collect"
|
||||
EVENT="cpu"
|
||||
DURATION="60"
|
||||
FILE=""
|
||||
USE_TMP="true"
|
||||
@@ -125,11 +110,16 @@ while [ $# -gt 0 ]; do
|
||||
start|resume|stop|check|status|list|collect)
|
||||
ACTION="$1"
|
||||
;;
|
||||
jstack)
|
||||
ACTION="start"
|
||||
EVENT="jstack"
|
||||
PARAMS="$PARAMS,threads"
|
||||
;;
|
||||
-v|--version)
|
||||
ACTION="version"
|
||||
;;
|
||||
-e)
|
||||
PARAMS="$PARAMS,event=$2"
|
||||
EVENT="$(echo "$2" | sed 's/,/,event=/g')"
|
||||
shift
|
||||
;;
|
||||
-d)
|
||||
@@ -191,12 +181,8 @@ while [ $# -gt 0 ]; do
|
||||
--reverse)
|
||||
FORMAT="$FORMAT,reverse"
|
||||
;;
|
||||
--samples|--total)
|
||||
FORMAT="$FORMAT,${1#--}"
|
||||
;;
|
||||
--alloc|--lock)
|
||||
PARAMS="$PARAMS,${1#--}=$2"
|
||||
shift
|
||||
--all-kernel)
|
||||
PARAMS="$PARAMS,allkernel"
|
||||
;;
|
||||
--all-user)
|
||||
PARAMS="$PARAMS,alluser"
|
||||
@@ -209,9 +195,6 @@ while [ $# -gt 0 ]; do
|
||||
PARAMS="$PARAMS,${1#--}=$2"
|
||||
shift
|
||||
;;
|
||||
--ttsp)
|
||||
PARAMS="$PARAMS,begin=SafepointSynchronize::begin,end=RuntimeService::record_safepoint_synchronized"
|
||||
;;
|
||||
--safe-mode)
|
||||
PARAMS="$PARAMS,safemode=$2"
|
||||
shift
|
||||
@@ -266,18 +249,10 @@ else
|
||||
;;
|
||||
esac
|
||||
fi
|
||||
LOG=/tmp/async-profiler-log.$$.$PID
|
||||
|
||||
UNAME_S=$(uname -s)
|
||||
if [ "$UNAME_S" = "Linux" ]; then
|
||||
ROOT_PREFIX="/proc/$PID/root"
|
||||
else
|
||||
ROOT_PREFIX=""
|
||||
fi
|
||||
|
||||
case $ACTION in
|
||||
start|resume|check)
|
||||
jattach "$ACTION,file=$FILE,$OUTPUT$FORMAT$PARAMS"
|
||||
jattach "$ACTION,event=$EVENT,file=$FILE,$OUTPUT$FORMAT$PARAMS"
|
||||
;;
|
||||
stop)
|
||||
jattach "stop,file=$FILE,$OUTPUT$FORMAT"
|
||||
@@ -289,20 +264,12 @@ case $ACTION in
|
||||
jattach "list,file=$FILE"
|
||||
;;
|
||||
collect)
|
||||
jattach "start,file=$FILE,$OUTPUT$FORMAT$PARAMS"
|
||||
echo Profiling for "$DURATION" seconds >&2
|
||||
set +e
|
||||
trap 'DURATION=0' INT
|
||||
|
||||
jattach "start,event=$EVENT,file=$FILE,$OUTPUT$FORMAT$PARAMS"
|
||||
while [ "$DURATION" -gt 0 ]; do
|
||||
DURATION=$(( DURATION-1 ))
|
||||
check_if_terminated
|
||||
sleep 1
|
||||
done
|
||||
|
||||
set -e
|
||||
trap - INT
|
||||
echo Done >&2
|
||||
jattach "stop,file=$FILE,$OUTPUT$FORMAT"
|
||||
;;
|
||||
version)
|
||||
|
||||
@@ -15,21 +15,22 @@
|
||||
*/
|
||||
|
||||
#include "allocTracer.h"
|
||||
#include "os.h"
|
||||
#include "profiler.h"
|
||||
#include "stackFrame.h"
|
||||
#include "vmStructs.h"
|
||||
|
||||
|
||||
int AllocTracer::_trap_kind;
|
||||
Trap AllocTracer::_in_new_tlab(0);
|
||||
Trap AllocTracer::_outside_tlab(1);
|
||||
Trap AllocTracer::_in_new_tlab;
|
||||
Trap AllocTracer::_outside_tlab;
|
||||
|
||||
u64 AllocTracer::_interval;
|
||||
volatile u64 AllocTracer::_allocated_bytes;
|
||||
|
||||
|
||||
// Called whenever our breakpoint trap is hit
|
||||
void AllocTracer::trapHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
void AllocTracer::signalHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
StackFrame frame(ucontext);
|
||||
int event_type;
|
||||
uintptr_t total_size;
|
||||
@@ -50,7 +51,6 @@ void AllocTracer::trapHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
instance_size = 0;
|
||||
} else {
|
||||
// Not our trap
|
||||
Profiler::_instance.trapHandler(signo, siginfo, ucontext);
|
||||
return;
|
||||
}
|
||||
|
||||
@@ -59,13 +59,14 @@ void AllocTracer::trapHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
frame.ret();
|
||||
|
||||
if (_enabled) {
|
||||
// TODO: _enabled also uses traps
|
||||
recordAllocation(ucontext, event_type, klass, total_size, instance_size);
|
||||
}
|
||||
}
|
||||
|
||||
void AllocTracer::recordAllocation(void* ucontext, int event_type, uintptr_t rklass,
|
||||
uintptr_t total_size, uintptr_t instance_size) {
|
||||
if (_interval > 1) {
|
||||
if (_interval) {
|
||||
// Do not record allocation unless allocated at least _interval bytes
|
||||
while (true) {
|
||||
u64 prev = _allocated_bytes;
|
||||
@@ -117,9 +118,9 @@ Error AllocTracer::check(Arguments& args) {
|
||||
return Error("No AllocTracer symbols found. Are JDK debug symbols installed?");
|
||||
}
|
||||
|
||||
_in_new_tlab.assign(ne);
|
||||
_outside_tlab.assign(oe);
|
||||
_in_new_tlab.pair(_outside_tlab);
|
||||
if (!_in_new_tlab.assign(ne) || !_outside_tlab.assign(oe)) {
|
||||
return Error("Unable to install allocation trap");
|
||||
}
|
||||
|
||||
return Error::OK;
|
||||
}
|
||||
@@ -130,12 +131,13 @@ Error AllocTracer::start(Arguments& args) {
|
||||
return error;
|
||||
}
|
||||
|
||||
_interval = args._alloc;
|
||||
_interval = args._interval;
|
||||
_allocated_bytes = 0;
|
||||
|
||||
if (!_in_new_tlab.install() || !_outside_tlab.install()) {
|
||||
return Error("Cannot install allocation breakpoints");
|
||||
}
|
||||
OS::installSignalHandler(SIGTRAP, signalHandler);
|
||||
|
||||
_in_new_tlab.install();
|
||||
_outside_tlab.install();
|
||||
|
||||
return Error::OK;
|
||||
}
|
||||
|
||||
@@ -32,23 +32,27 @@ class AllocTracer : public Engine {
|
||||
static u64 _interval;
|
||||
static volatile u64 _allocated_bytes;
|
||||
|
||||
static void signalHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
|
||||
static void recordAllocation(void* ucontext, int event_type, uintptr_t rklass,
|
||||
uintptr_t total_size, uintptr_t instance_size);
|
||||
|
||||
public:
|
||||
const char* title() {
|
||||
return "Allocation profile";
|
||||
const char* name() {
|
||||
return "alloc";
|
||||
}
|
||||
|
||||
const char* units() {
|
||||
return "bytes";
|
||||
}
|
||||
|
||||
CStack cstack() {
|
||||
return CSTACK_NO;
|
||||
}
|
||||
|
||||
Error check(Arguments& args);
|
||||
Error start(Arguments& args);
|
||||
void stop();
|
||||
|
||||
static void trapHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
};
|
||||
|
||||
#endif // _ALLOCTRACER_H
|
||||
|
||||
@@ -58,9 +58,6 @@ public class AsyncProfiler implements AsyncProfilerMXBean {
|
||||
*/
|
||||
@Override
|
||||
public void start(String event, long interval) throws IllegalStateException {
|
||||
if (event == null) {
|
||||
throw new NullPointerException();
|
||||
}
|
||||
start0(event, interval, true);
|
||||
}
|
||||
|
||||
@@ -74,9 +71,6 @@ public class AsyncProfiler implements AsyncProfilerMXBean {
|
||||
*/
|
||||
@Override
|
||||
public void resume(String event, long interval) throws IllegalStateException {
|
||||
if (event == null) {
|
||||
throw new NullPointerException();
|
||||
}
|
||||
start0(event, interval, false);
|
||||
}
|
||||
|
||||
@@ -122,10 +116,7 @@ public class AsyncProfiler implements AsyncProfilerMXBean {
|
||||
* @throws IOException If failed to create output file
|
||||
*/
|
||||
@Override
|
||||
public String execute(String command) throws IllegalArgumentException, IllegalStateException, IOException {
|
||||
if (command == null) {
|
||||
throw new NullPointerException();
|
||||
}
|
||||
public String execute(String command) throws IllegalArgumentException, IOException {
|
||||
return execute0(command);
|
||||
}
|
||||
|
||||
@@ -138,22 +129,7 @@ public class AsyncProfiler implements AsyncProfilerMXBean {
|
||||
@Override
|
||||
public String dumpCollapsed(Counter counter) {
|
||||
try {
|
||||
return execute0("collapsed," + counter.name().toLowerCase());
|
||||
} catch (IOException e) {
|
||||
throw new IllegalStateException(e);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Dump collected stack traces
|
||||
*
|
||||
* @param maxTraces Maximum number of stack traces to dump. 0 means no limit
|
||||
* @return Textual representation of the profile
|
||||
*/
|
||||
@Override
|
||||
public String dumpTraces(int maxTraces) {
|
||||
try {
|
||||
return execute0(maxTraces == 0 ? "traces" : "traces=" + maxTraces);
|
||||
return execute0("collapsed,counter=" + counter.name().toLowerCase());
|
||||
} catch (IOException e) {
|
||||
throw new IllegalStateException(e);
|
||||
}
|
||||
@@ -168,7 +144,7 @@ public class AsyncProfiler implements AsyncProfilerMXBean {
|
||||
@Override
|
||||
public String dumpFlat(int maxMethods) {
|
||||
try {
|
||||
return execute0(maxMethods == 0 ? "flat" : "flat=" + maxMethods);
|
||||
return execute0("flat=" + maxMethods);
|
||||
} catch (IOException e) {
|
||||
throw new IllegalStateException(e);
|
||||
}
|
||||
@@ -195,7 +171,7 @@ public class AsyncProfiler implements AsyncProfilerMXBean {
|
||||
}
|
||||
|
||||
private void filterThread(Thread thread, boolean enable) {
|
||||
if (thread == null || thread == Thread.currentThread()) {
|
||||
if (thread == null) {
|
||||
filterThread0(null, enable);
|
||||
} else {
|
||||
// Need to take lock to avoid race condition with a thread state change
|
||||
@@ -210,6 +186,6 @@ public class AsyncProfiler implements AsyncProfilerMXBean {
|
||||
|
||||
private native void start0(String event, long interval, boolean reset) throws IllegalStateException;
|
||||
private native void stop0() throws IllegalStateException;
|
||||
private native String execute0(String command) throws IllegalArgumentException, IllegalStateException, IOException;
|
||||
private native String execute0(String command) throws IllegalArgumentException, IOException;
|
||||
private native void filterThread0(Thread thread, boolean enable);
|
||||
}
|
||||
|
||||
@@ -35,9 +35,8 @@ public interface AsyncProfilerMXBean {
|
||||
long getSamples();
|
||||
String getVersion();
|
||||
|
||||
String execute(String command) throws IllegalArgumentException, IllegalStateException, java.io.IOException;
|
||||
String execute(String command) throws IllegalArgumentException, java.io.IOException;
|
||||
|
||||
String dumpCollapsed(Counter counter);
|
||||
String dumpTraces(int maxTraces);
|
||||
String dumpFlat(int maxMethods);
|
||||
}
|
||||
|
||||
20
src/arch.h
20
src/arch.h
@@ -44,7 +44,7 @@ const int PERF_REG_PC = 8; // PERF_REG_X86_IP
|
||||
|
||||
#define spinPause() asm volatile("pause")
|
||||
#define rmb() asm volatile("lfence" : : : "memory")
|
||||
#define flushCache(addr) asm volatile("mfence; clflush (%0); mfence" : : "r" (addr) : "memory")
|
||||
#define flushCache(addr) asm volatile("mfence; clflush (%0); mfence" : : "r"(addr) : "memory")
|
||||
|
||||
#elif defined(__arm__) || defined(__thumb__)
|
||||
|
||||
@@ -82,22 +82,4 @@ const int PERF_REG_PC = 32; // PERF_REG_ARM64_PC
|
||||
#endif
|
||||
|
||||
|
||||
// Return address signing support.
|
||||
// Apple M1 has 47 bit virtual addresses.
|
||||
#if defined(__aarch64__) && defined(__APPLE__)
|
||||
# define ADDRESS_BITS 47
|
||||
# define WX_MEMORY true
|
||||
#else
|
||||
# define WX_MEMORY false
|
||||
#endif
|
||||
|
||||
#ifdef ADDRESS_BITS
|
||||
static inline const void* stripPointer(const void* p) {
|
||||
return (const void*) ((unsigned long)p & ((1UL << ADDRESS_BITS) - 1));
|
||||
}
|
||||
#else
|
||||
# define stripPointer(p) (p)
|
||||
#endif
|
||||
|
||||
|
||||
#endif // _ARCH_H
|
||||
|
||||
@@ -31,14 +31,18 @@ const Error Error::OK(NULL);
|
||||
const size_t EXTRA_BUF_SIZE = 512;
|
||||
|
||||
// Statically compute hash code of a string containing up to 12 [a-z] letters
|
||||
#define HASH(s) ((s[0] & 31LL) | (s[1] & 31LL) << 5 | (s[2] & 31LL) << 10 | (s[3] & 31LL) << 15 | \
|
||||
(s[4] & 31LL) << 20 | (s[5] & 31LL) << 25 | (s[6] & 31LL) << 30 | (s[7] & 31LL) << 35 | \
|
||||
(s[8] & 31LL) << 40 | (s[9] & 31LL) << 45 | (s[10] & 31LL) << 50 | (s[11] & 31LL) << 55)
|
||||
#define HASH(s) (HASH12(s " "))
|
||||
|
||||
#define HASH12(s) (s[0] & 31LL) | (s[1] & 31LL) << 5 | (s[2] & 31LL) << 10 | (s[3] & 31LL) << 15 | \
|
||||
(s[4] & 31LL) << 20 | (s[5] & 31LL) << 25 | (s[6] & 31LL) << 30 | (s[7] & 31LL) << 35 | \
|
||||
(s[8] & 31LL) << 40 | (s[9] & 31LL) << 45 | (s[10] & 31LL) << 50 | (s[11] & 31LL) << 55
|
||||
|
||||
// Simulate switch statement over string hashes
|
||||
#define SWITCH(arg) long long arg_hash = hash(arg); if (0)
|
||||
|
||||
#define CASE(s) } else if (arg_hash == HASH(s " ")) {
|
||||
#define CASE(s) } else if (arg_hash == HASH(s)) {
|
||||
|
||||
#define CASE2(s1, s2) } else if (arg_hash == HASH(s1) || arg_hash == HASH(s2)) {
|
||||
|
||||
|
||||
// Parses agent arguments.
|
||||
@@ -52,22 +56,17 @@ const size_t EXTRA_BUF_SIZE = 512;
|
||||
// status - print profiling status (inactive / running for X seconds)
|
||||
// list - show the list of available profiling events
|
||||
// version[=full] - display the agent version
|
||||
// event=EVENT - which event to trace (cpu, wall, cache-misses, etc.)
|
||||
// alloc[=BYTES] - profile allocations with BYTES interval
|
||||
// lock[=DURATION] - profile contended locks longer than DURATION ns
|
||||
// collapsed - dump collapsed stacks (the format used by FlameGraph script)
|
||||
// flamegraph - produce Flame Graph in HTML format
|
||||
// tree - produce call tree in HTML format
|
||||
// event=EVENT - which event to trace (cpu, alloc, lock, cache-misses etc.)
|
||||
// collapsed[=C] - dump collapsed stacks (the format used by FlameGraph script)
|
||||
// html[=C] - produce Flame Graph in HTML format
|
||||
// tree[=C] - produce call tree in HTML format
|
||||
// C is counter type: 'samples' or 'total'
|
||||
// jfr - dump events in Java Flight Recorder format
|
||||
// traces[=N] - dump top N call traces
|
||||
// flat[=N] - dump top N methods (aka flat profile)
|
||||
// samples - count the number of samples (default)
|
||||
// total - count the total value (time, bytes, etc.) instead of samples"
|
||||
// interval=N - sampling interval in ns (default: 10'000'000, i.e. 10 ms)
|
||||
// jstackdepth=N - maximum Java stack depth (default: 2048)
|
||||
// safemode=BITS - disable stack recovery techniques (default: 0, i.e. everything enabled)
|
||||
// file=FILENAME - output file name for dumping
|
||||
// log=FILENAME - log warnings and errors to the given dedicated stream
|
||||
// filter=FILTER - thread filter
|
||||
// threads - profile different threads separately
|
||||
// cstack=MODE - how to collect C stack frames in addition to Java stack
|
||||
@@ -101,8 +100,6 @@ Error Arguments::parse(const char* args) {
|
||||
}
|
||||
strcpy(_buf, args);
|
||||
|
||||
const char* msg = NULL;
|
||||
|
||||
for (char* arg = strtok(_buf, ","); arg != NULL; arg = strtok(NULL, ",")) {
|
||||
char* value = strchr(arg, '=');
|
||||
if (value != NULL) *value++ = 0;
|
||||
@@ -131,83 +128,54 @@ Error Arguments::parse(const char* args) {
|
||||
_action = value == NULL ? ACTION_VERSION : ACTION_FULL_VERSION;
|
||||
|
||||
// Output formats
|
||||
CASE("collapsed")
|
||||
CASE2("collapsed", "folded")
|
||||
_output = OUTPUT_COLLAPSED;
|
||||
_counter = value == NULL || strcmp(value, "samples") == 0 ? COUNTER_SAMPLES : COUNTER_TOTAL;
|
||||
|
||||
CASE("flamegraph")
|
||||
CASE2("flamegraph", "html")
|
||||
_output = OUTPUT_FLAMEGRAPH;
|
||||
_counter = value == NULL || strcmp(value, "samples") == 0 ? COUNTER_SAMPLES : COUNTER_TOTAL;
|
||||
|
||||
CASE("tree")
|
||||
_output = OUTPUT_TREE;
|
||||
_counter = value == NULL || strcmp(value, "samples") == 0 ? COUNTER_SAMPLES : COUNTER_TOTAL;
|
||||
|
||||
CASE("jfr")
|
||||
_output = OUTPUT_JFR;
|
||||
_jfr_options = value == NULL ? 0 :
|
||||
strcmp(value, "combine") == 0 ? JFR_COMBINE :
|
||||
(int)strtol(value, NULL, 0);
|
||||
|
||||
CASE("traces")
|
||||
_output = OUTPUT_TEXT;
|
||||
_dump_traces = value == NULL ? INT_MAX : atoi(value);
|
||||
|
||||
CASE("flat")
|
||||
_output = OUTPUT_TEXT;
|
||||
_output = OUTPUT_FLAT;
|
||||
_dump_flat = value == NULL ? INT_MAX : atoi(value);
|
||||
|
||||
CASE("samples")
|
||||
_counter = COUNTER_SAMPLES;
|
||||
|
||||
CASE("total")
|
||||
_counter = COUNTER_TOTAL;
|
||||
|
||||
// Basic options
|
||||
CASE("event")
|
||||
if (value == NULL || value[0] == 0) {
|
||||
msg = "event must not be empty";
|
||||
} else if (strcmp(value, EVENT_ALLOC) == 0) {
|
||||
if (_alloc <= 0) _alloc = 1;
|
||||
} else if (strcmp(value, EVENT_LOCK) == 0) {
|
||||
if (_lock <= 0) _lock = 1;
|
||||
} else if (_event != NULL) {
|
||||
msg = "Duplicate event argument";
|
||||
} else {
|
||||
_event = value;
|
||||
return Error("event must not be empty");
|
||||
}
|
||||
|
||||
CASE("alloc")
|
||||
_alloc = value == NULL ? 1 : parseUnits(value);
|
||||
if (_alloc < 0) {
|
||||
msg = "alloc must be >= 0";
|
||||
}
|
||||
|
||||
CASE("lock")
|
||||
_lock = value == NULL ? 1 : parseUnits(value);
|
||||
if (_lock < 0) {
|
||||
msg = "lock must be >= 0";
|
||||
if (!addEvent(value)) {
|
||||
return Error("multiple incompatible events");
|
||||
}
|
||||
|
||||
CASE("interval")
|
||||
if (value == NULL || (_interval = parseUnits(value)) <= 0) {
|
||||
msg = "Invalid interval";
|
||||
return Error("Invalid interval");
|
||||
}
|
||||
|
||||
CASE("jstackdepth")
|
||||
if (value == NULL || (_jstackdepth = atoi(value)) <= 0) {
|
||||
msg = "jstackdepth must be > 0";
|
||||
return Error("jstackdepth must be > 0");
|
||||
}
|
||||
|
||||
CASE("safemode")
|
||||
_safe_mode = value == NULL ? INT_MAX : (int)strtol(value, NULL, 0);
|
||||
_safe_mode = value == NULL ? INT_MAX : atoi(value);
|
||||
|
||||
CASE("file")
|
||||
if (value == NULL || value[0] == 0) {
|
||||
msg = "file must not be empty";
|
||||
return Error("file must not be empty");
|
||||
}
|
||||
_file = value;
|
||||
|
||||
CASE("log")
|
||||
_log = value == NULL || value[0] == 0 ? NULL : value;
|
||||
|
||||
// Filters
|
||||
CASE("filter")
|
||||
_filter = value == NULL ? "" : value;
|
||||
@@ -259,7 +227,7 @@ Error Arguments::parse(const char* args) {
|
||||
|
||||
// FlameGraph options
|
||||
CASE("title")
|
||||
_title = value;
|
||||
if (value != NULL) _title = value;
|
||||
|
||||
CASE("minwidth")
|
||||
if (value != NULL) _minwidth = atof(value);
|
||||
@@ -269,25 +237,12 @@ Error Arguments::parse(const char* args) {
|
||||
}
|
||||
}
|
||||
|
||||
// Return error only after parsing all arguments, when 'log' is already set
|
||||
if (msg != NULL) {
|
||||
return Error(msg);
|
||||
}
|
||||
|
||||
if (_event == NULL && _alloc == 0 && _lock == 0) {
|
||||
_event = EVENT_CPU;
|
||||
}
|
||||
|
||||
if (_file != NULL && strchr(_file, '%') != NULL) {
|
||||
_file = expandFilePattern(_buf + len + 1, EXTRA_BUF_SIZE - 1, _file);
|
||||
}
|
||||
|
||||
if (_file != NULL && _output == OUTPUT_NONE) {
|
||||
_output = detectOutputFormat(_file);
|
||||
if (_output == OUTPUT_SVG) {
|
||||
return Error("SVG format is obsolete, use .html for FlameGraph");
|
||||
}
|
||||
_dump_traces = 100;
|
||||
_dump_flat = 200;
|
||||
}
|
||||
|
||||
@@ -298,6 +253,21 @@ Error Arguments::parse(const char* args) {
|
||||
return Error::OK;
|
||||
}
|
||||
|
||||
bool Arguments::addEvent(const char* event) {
|
||||
if (strcmp(event, EVENT_ALLOC) == 0) {
|
||||
_events |= EK_ALLOC;
|
||||
} else if (strcmp(event, EVENT_LOCK) == 0) {
|
||||
_events |= EK_LOCK;
|
||||
} else {
|
||||
if (_events & EK_CPU) {
|
||||
return false;
|
||||
}
|
||||
_events |= EK_CPU;
|
||||
_event_desc = event;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// The linked list of string offsets is embedded right into _buf array
|
||||
void Arguments::appendToEmbeddedList(int& list, char* value) {
|
||||
((int*)value)[-1] = list;
|
||||
@@ -354,11 +324,9 @@ Output Arguments::detectOutputFormat(const char* file) {
|
||||
return OUTPUT_JFR;
|
||||
} else if (strcmp(ext, ".collapsed") == 0 || strcmp(ext, ".folded") == 0) {
|
||||
return OUTPUT_COLLAPSED;
|
||||
} else if (strcmp(ext, ".svg") == 0) {
|
||||
return OUTPUT_SVG;
|
||||
}
|
||||
}
|
||||
return OUTPUT_TEXT;
|
||||
return OUTPUT_FLAT;
|
||||
}
|
||||
|
||||
long Arguments::parseUnits(const char* str) {
|
||||
|
||||
@@ -28,6 +28,7 @@ const char* const EVENT_ALLOC = "alloc";
|
||||
const char* const EVENT_LOCK = "lock";
|
||||
const char* const EVENT_WALL = "wall";
|
||||
const char* const EVENT_ITIMER = "itimer";
|
||||
const char* const EVENT_JSTACK = "jstack";
|
||||
|
||||
enum Action {
|
||||
ACTION_NONE,
|
||||
@@ -53,6 +54,12 @@ enum Ring {
|
||||
RING_USER
|
||||
};
|
||||
|
||||
enum EventKind {
|
||||
EK_CPU = 1,
|
||||
EK_ALLOC = 2,
|
||||
EK_LOCK = 4
|
||||
};
|
||||
|
||||
enum Style {
|
||||
STYLE_SIMPLE = 1,
|
||||
STYLE_DOTTED = 2,
|
||||
@@ -69,25 +76,13 @@ enum CStack {
|
||||
|
||||
enum Output {
|
||||
OUTPUT_NONE,
|
||||
OUTPUT_TEXT,
|
||||
OUTPUT_SVG, // obsolete
|
||||
OUTPUT_FLAT,
|
||||
OUTPUT_COLLAPSED,
|
||||
OUTPUT_FLAMEGRAPH,
|
||||
OUTPUT_TREE,
|
||||
OUTPUT_JFR
|
||||
};
|
||||
|
||||
enum JfrOption {
|
||||
NO_SYSTEM_INFO = 0x1,
|
||||
NO_SYSTEM_PROPS = 0x2,
|
||||
NO_CPU_LOAD = 0x4,
|
||||
|
||||
JFR_SYNC = 0x10,
|
||||
JFR_TEMP_FILE = 0x20,
|
||||
|
||||
JFR_COMBINE = NO_SYSTEM_INFO | NO_SYSTEM_PROPS | NO_CPU_LOAD | JFR_SYNC | JFR_TEMP_FILE
|
||||
};
|
||||
|
||||
|
||||
class Error {
|
||||
private:
|
||||
@@ -125,14 +120,12 @@ class Arguments {
|
||||
Action _action;
|
||||
Counter _counter;
|
||||
Ring _ring;
|
||||
const char* _event;
|
||||
int _events;
|
||||
const char* _event_desc;
|
||||
long _interval;
|
||||
long _alloc;
|
||||
long _lock;
|
||||
int _jstackdepth;
|
||||
int _safe_mode;
|
||||
const char* _file;
|
||||
const char* _log;
|
||||
const char* _filter;
|
||||
int _include;
|
||||
int _exclude;
|
||||
@@ -140,8 +133,6 @@ class Arguments {
|
||||
int _style;
|
||||
CStack _cstack;
|
||||
Output _output;
|
||||
int _jfr_options;
|
||||
int _dump_traces;
|
||||
int _dump_flat;
|
||||
const char* _begin;
|
||||
const char* _end;
|
||||
@@ -156,14 +147,12 @@ class Arguments {
|
||||
_action(ACTION_NONE),
|
||||
_counter(COUNTER_SAMPLES),
|
||||
_ring(RING_ANY),
|
||||
_event(NULL),
|
||||
_events(0),
|
||||
_event_desc(NULL),
|
||||
_interval(0),
|
||||
_alloc(0),
|
||||
_lock(0),
|
||||
_jstackdepth(DEFAULT_JSTACKDEPTH),
|
||||
_safe_mode(0),
|
||||
_file(NULL),
|
||||
_log(NULL),
|
||||
_filter(NULL),
|
||||
_include(0),
|
||||
_exclude(0),
|
||||
@@ -171,12 +160,9 @@ class Arguments {
|
||||
_style(0),
|
||||
_cstack(CSTACK_DEFAULT),
|
||||
_output(OUTPUT_NONE),
|
||||
_jfr_options(0),
|
||||
_dump_traces(0),
|
||||
_dump_flat(0),
|
||||
_begin(NULL),
|
||||
_end(NULL),
|
||||
_title(NULL),
|
||||
_title("Flame Graph"),
|
||||
_minwidth(0),
|
||||
_reverse(false) {
|
||||
}
|
||||
@@ -187,13 +173,7 @@ class Arguments {
|
||||
|
||||
Error parse(const char* args);
|
||||
|
||||
bool hasOutputFile() const {
|
||||
return _file != NULL && (_action == ACTION_DUMP ? _output != OUTPUT_JFR : _action >= ACTION_STATUS);
|
||||
}
|
||||
|
||||
bool hasOption(JfrOption option) const {
|
||||
return (_jfr_options & option) != 0;
|
||||
}
|
||||
bool addEvent(const char* event);
|
||||
|
||||
friend class FrameName;
|
||||
friend class Recording;
|
||||
|
||||
@@ -15,13 +15,14 @@
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include "callTraceStorage.h"
|
||||
#include "os.h"
|
||||
|
||||
|
||||
static const u32 INITIAL_CAPACITY = 65536;
|
||||
static const u32 CALL_TRACE_CHUNK = 8 * 1024 * 1024;
|
||||
static const u32 OVERFLOW_TRACE_ID = 0x7fffffff;
|
||||
static const size_t PAGE_ALIGNMENT = sysconf(_SC_PAGESIZE) - 1;
|
||||
|
||||
|
||||
class LongHashTable {
|
||||
@@ -35,7 +36,7 @@ class LongHashTable {
|
||||
|
||||
static size_t getSize(u32 capacity) {
|
||||
size_t size = sizeof(LongHashTable) + (sizeof(u64) + sizeof(CallTraceSample)) * capacity;
|
||||
return (size + OS::page_mask) & ~OS::page_mask;
|
||||
return (size + PAGE_ALIGNMENT) & ~PAGE_ALIGNMENT;
|
||||
}
|
||||
|
||||
public:
|
||||
@@ -86,11 +87,8 @@ class LongHashTable {
|
||||
};
|
||||
|
||||
|
||||
CallTrace CallTraceStorage::_overflow_trace = {1, {BCI_ERROR, (jmethodID)"[storage_overflow]"}};
|
||||
|
||||
CallTraceStorage::CallTraceStorage() : _allocator(CALL_TRACE_CHUNK) {
|
||||
_current_table = LongHashTable::allocate(NULL, INITIAL_CAPACITY);
|
||||
_overflow = 0;
|
||||
}
|
||||
|
||||
CallTraceStorage::~CallTraceStorage() {
|
||||
@@ -105,7 +103,6 @@ void CallTraceStorage::clear() {
|
||||
}
|
||||
_current_table->clear();
|
||||
_allocator.clear();
|
||||
_overflow = 0;
|
||||
}
|
||||
|
||||
void CallTraceStorage::collectTraces(std::map<u32, CallTrace*>& map) {
|
||||
@@ -120,10 +117,6 @@ void CallTraceStorage::collectTraces(std::map<u32, CallTrace*>& map) {
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (_overflow > 0) {
|
||||
map[OVERFLOW_TRACE_ID] = &_overflow_trace;
|
||||
}
|
||||
}
|
||||
|
||||
void CallTraceStorage::collectSamples(std::vector<CallTraceSample*>& samples) {
|
||||
@@ -140,20 +133,6 @@ void CallTraceStorage::collectSamples(std::vector<CallTraceSample*>& samples) {
|
||||
}
|
||||
}
|
||||
|
||||
void CallTraceStorage::collectSamples(std::map<u64, CallTraceSample>& map) {
|
||||
for (LongHashTable* table = _current_table; table != NULL; table = table->prev()) {
|
||||
u64* keys = table->keys();
|
||||
CallTraceSample* values = table->values();
|
||||
u32 capacity = table->capacity();
|
||||
|
||||
for (u32 slot = 0; slot < capacity; slot++) {
|
||||
if (keys[slot] != 0) {
|
||||
map[keys[slot]] += values[slot];
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Adaptation of MurmurHash64A by Austin Appleby
|
||||
u64 CallTraceStorage::calcHash(int num_frames, ASGCT_CallFrame* frames) {
|
||||
const u64 M = 0xc6a4a7935bd1e995ULL;
|
||||
@@ -252,13 +231,13 @@ u32 CallTraceStorage::put(int num_frames, ASGCT_CallFrame* frames, u64 counter)
|
||||
|
||||
if (++step >= capacity) {
|
||||
// Very unlikely case of a table overflow
|
||||
atomicInc(_overflow);
|
||||
return OVERFLOW_TRACE_ID;
|
||||
return 0;
|
||||
}
|
||||
// Improved version of linear probing
|
||||
slot = (slot + step) & (capacity - 1);
|
||||
}
|
||||
|
||||
// TODO: check overhead
|
||||
CallTraceSample& s = table->values()[slot];
|
||||
atomicInc(s.samples);
|
||||
atomicInc(s.counter, counter);
|
||||
|
||||
@@ -35,26 +35,12 @@ struct CallTraceSample {
|
||||
CallTrace* trace;
|
||||
u64 samples;
|
||||
u64 counter;
|
||||
|
||||
CallTraceSample& operator+=(const CallTraceSample& s) {
|
||||
trace = s.trace;
|
||||
samples += s.samples;
|
||||
counter += s.counter;
|
||||
return *this;
|
||||
}
|
||||
|
||||
bool operator<(const CallTraceSample& other) const {
|
||||
return counter > other.counter;
|
||||
}
|
||||
};
|
||||
|
||||
class CallTraceStorage {
|
||||
private:
|
||||
static CallTrace _overflow_trace;
|
||||
|
||||
LinearAllocator _allocator;
|
||||
LongHashTable* _current_table;
|
||||
u64 _overflow;
|
||||
|
||||
u64 calcHash(int num_frames, ASGCT_CallFrame* frames);
|
||||
CallTrace* storeCallTrace(int num_frames, ASGCT_CallFrame* frames);
|
||||
@@ -67,7 +53,6 @@ class CallTraceStorage {
|
||||
void clear();
|
||||
void collectTraces(std::map<u32, CallTrace*>& map);
|
||||
void collectSamples(std::vector<CallTraceSample*>& samples);
|
||||
void collectSamples(std::map<u64, CallTraceSample>& map);
|
||||
|
||||
u32 put(int num_frames, ASGCT_CallFrame* frames, u64 counter);
|
||||
};
|
||||
|
||||
@@ -31,9 +31,7 @@ void CodeCache::expand() {
|
||||
}
|
||||
|
||||
_count = live;
|
||||
if (live * 2 > _capacity) {
|
||||
_capacity = live * 2;
|
||||
}
|
||||
_capacity *= 2;
|
||||
_blobs = new_blobs;
|
||||
delete[] old_blobs;
|
||||
}
|
||||
@@ -50,7 +48,8 @@ void CodeCache::add(const void* start, int length, jmethodID method, bool update
|
||||
_count++;
|
||||
|
||||
if (update_bounds) {
|
||||
updateBounds(start, end);
|
||||
if (start < _min_address) _min_address = start;
|
||||
if (end > _max_address) _max_address = end;
|
||||
}
|
||||
}
|
||||
|
||||
@@ -63,11 +62,6 @@ void CodeCache::remove(const void* start, jmethodID method) {
|
||||
}
|
||||
}
|
||||
|
||||
void CodeCache::updateBounds(const void* start, const void* end) {
|
||||
if (start < _min_address) _min_address = start;
|
||||
if (end > _max_address) _max_address = end;
|
||||
}
|
||||
|
||||
jmethodID CodeCache::find(const void* address) {
|
||||
for (int i = 0; i < _count; i++) {
|
||||
CodeBlob* cb = _blobs + i;
|
||||
|
||||
@@ -71,17 +71,12 @@ class CodeCache {
|
||||
delete[] _blobs;
|
||||
}
|
||||
|
||||
void reset() {
|
||||
_count = 0;
|
||||
}
|
||||
|
||||
bool contains(const void* address) {
|
||||
return address >= _min_address && address < _max_address;
|
||||
}
|
||||
|
||||
void add(const void* start, int length, jmethodID method, bool update_bounds = false);
|
||||
void remove(const void* start, jmethodID method);
|
||||
void updateBounds(const void* start, const void* end);
|
||||
jmethodID find(const void* address);
|
||||
};
|
||||
|
||||
|
||||
@@ -19,15 +19,8 @@ import one.jfr.Dictionary;
|
||||
import one.jfr.JfrReader;
|
||||
import one.jfr.MethodRef;
|
||||
import one.jfr.StackTrace;
|
||||
import one.jfr.event.AllocationSample;
|
||||
import one.jfr.event.ContendedLock;
|
||||
import one.jfr.event.Event;
|
||||
import one.jfr.event.EventAggregator;
|
||||
import one.jfr.event.ExecutionSample;
|
||||
|
||||
import java.nio.charset.StandardCharsets;
|
||||
import java.util.Arrays;
|
||||
import java.util.HashSet;
|
||||
|
||||
/**
|
||||
* Converts .jfr output produced by async-profiler to HTML Flame Graph.
|
||||
@@ -43,97 +36,22 @@ public class jfr2flame {
|
||||
this.jfr = jfr;
|
||||
}
|
||||
|
||||
public void convert(final FlameGraph fg, final boolean threads, final boolean total,
|
||||
final Class<? extends Event> eventClass) {
|
||||
EventAggregator agg = new EventAggregator(threads, total);
|
||||
for (Event event; (event = jfr.readEvent(eventClass)) != null; ) {
|
||||
agg.collect(event);
|
||||
}
|
||||
|
||||
public void convert(final FlameGraph fg) {
|
||||
// Don't use lambda for faster startup
|
||||
agg.forEach(new EventAggregator.Visitor() {
|
||||
jfr.stackTraces.forEach(new Dictionary.Visitor<StackTrace>() {
|
||||
@Override
|
||||
public void visit(Event event, long value) {
|
||||
StackTrace stackTrace = jfr.stackTraces.get(event.stackTraceId);
|
||||
if (stackTrace != null) {
|
||||
long[] methods = stackTrace.methods;
|
||||
byte[] types = stackTrace.types;
|
||||
String classFrame = getClassFrame(event);
|
||||
String[] trace = new String[methods.length + (threads ? 1 : 0) + (classFrame != null ? 1 : 0)];
|
||||
if (threads) {
|
||||
trace[0] = getThreadFrame(event.tid);
|
||||
}
|
||||
int idx = trace.length;
|
||||
if (classFrame != null) {
|
||||
trace[--idx] = classFrame;
|
||||
}
|
||||
for (int i = 0; i < methods.length; i++) {
|
||||
trace[--idx] = getMethodName(methods[i], types[i]);
|
||||
}
|
||||
fg.addSample(trace, value);
|
||||
public void visit(long id, StackTrace stackTrace) {
|
||||
long[] methods = stackTrace.methods;
|
||||
byte[] types = stackTrace.types;
|
||||
String[] trace = new String[methods.length];
|
||||
for (int i = 0; i < methods.length; i++) {
|
||||
trace[trace.length - 1 - i] = getMethodName(methods[i], types[i]);
|
||||
}
|
||||
fg.addSample(trace, stackTrace.samples);
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
private String getThreadFrame(int tid) {
|
||||
String threadName = jfr.threads.get(tid);
|
||||
return threadName == null ? "[tid=" + tid + ']' : '[' + threadName + " tid=" + tid + ']';
|
||||
}
|
||||
|
||||
private String getClassFrame(Event event) {
|
||||
long classId;
|
||||
String suffix;
|
||||
if (event instanceof AllocationSample) {
|
||||
classId = ((AllocationSample) event).classId;
|
||||
suffix = ((AllocationSample) event).tlabSize == 0 ? "_[k]" : "_[i]";
|
||||
} else if (event instanceof ContendedLock) {
|
||||
classId = ((ContendedLock) event).classId;
|
||||
suffix = "_[i]";
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
|
||||
ClassRef cls = jfr.classes.get(classId);
|
||||
byte[] className = jfr.symbols.get(cls.name);
|
||||
|
||||
int arrayDepth = 0;
|
||||
while (className[arrayDepth] == '[') {
|
||||
arrayDepth++;
|
||||
}
|
||||
|
||||
StringBuilder sb = new StringBuilder(toJavaClassName(className, arrayDepth));
|
||||
while (arrayDepth-- > 0) {
|
||||
sb.append("[]");
|
||||
}
|
||||
return sb.append(suffix).toString();
|
||||
}
|
||||
|
||||
private String toJavaClassName(byte[] symbol, int start) {
|
||||
switch (symbol[start]) {
|
||||
case 'B':
|
||||
return "byte";
|
||||
case 'C':
|
||||
return "char";
|
||||
case 'S':
|
||||
return "short";
|
||||
case 'I':
|
||||
return "int";
|
||||
case 'J':
|
||||
return "long";
|
||||
case 'Z':
|
||||
return "boolean";
|
||||
case 'F':
|
||||
return "float";
|
||||
case 'D':
|
||||
return "double";
|
||||
case 'L':
|
||||
return new String(symbol, start + 1, symbol.length - start - 2, StandardCharsets.UTF_8).replace('/', '.');
|
||||
default:
|
||||
return new String(symbol, start, symbol.length - start, StandardCharsets.UTF_8).replace('/', '.');
|
||||
}
|
||||
}
|
||||
|
||||
private String getMethodName(long methodId, int type) {
|
||||
String result = methodNames.get(methodId);
|
||||
if (result != null) {
|
||||
@@ -162,30 +80,11 @@ public class jfr2flame {
|
||||
FlameGraph fg = new FlameGraph(args);
|
||||
if (fg.input == null) {
|
||||
System.out.println("Usage: java " + jfr2flame.class.getName() + " [options] input.jfr [output.html]");
|
||||
System.out.println();
|
||||
System.out.println("options include all supported FlameGraph options, plus the following:");
|
||||
System.out.println(" --alloc Allocation Flame Graph");
|
||||
System.out.println(" --lock Lock contention Flame Graph");
|
||||
System.out.println(" --threads Split profile by threads");
|
||||
System.out.println(" --total Accumulate the total value (time, bytes, etc.)");
|
||||
System.exit(1);
|
||||
}
|
||||
|
||||
HashSet<String> options = new HashSet<>(Arrays.asList(args));
|
||||
boolean threads = options.contains("--threads");
|
||||
boolean total = options.contains("--total");
|
||||
|
||||
Class<? extends Event> eventClass;
|
||||
if (options.contains("--alloc")) {
|
||||
eventClass = AllocationSample.class;
|
||||
} else if (options.contains("--lock")) {
|
||||
eventClass = ContendedLock.class;
|
||||
} else {
|
||||
eventClass = ExecutionSample.class;
|
||||
}
|
||||
|
||||
try (JfrReader jfr = new JfrReader(fg.input)) {
|
||||
new jfr2flame(jfr).convert(fg, threads, total, eventClass);
|
||||
new jfr2flame(jfr).convert(fg);
|
||||
}
|
||||
|
||||
fg.dump();
|
||||
|
||||
@@ -15,12 +15,11 @@
|
||||
*/
|
||||
|
||||
import one.jfr.ClassRef;
|
||||
import one.jfr.Dictionary;
|
||||
import one.jfr.JfrReader;
|
||||
import one.jfr.MethodRef;
|
||||
import one.jfr.Sample;
|
||||
import one.jfr.StackTrace;
|
||||
import one.jfr.event.Event;
|
||||
import one.jfr.event.EventAggregator;
|
||||
import one.jfr.event.ExecutionSample;
|
||||
import one.proto.Proto;
|
||||
|
||||
import java.io.File;
|
||||
@@ -28,7 +27,6 @@ import java.io.FileOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.OutputStream;
|
||||
import java.util.Arrays;
|
||||
import java.util.List;
|
||||
|
||||
/**
|
||||
* Converts .jfr output produced by async-profiler to nflxprofile format
|
||||
@@ -41,18 +39,16 @@ public class jfr2nflx {
|
||||
private static final byte[] NO_STACK = "[no_stack]".getBytes();
|
||||
|
||||
private final JfrReader jfr;
|
||||
private final List<ExecutionSample> samples;
|
||||
|
||||
public jfr2nflx(JfrReader jfr) {
|
||||
this.jfr = jfr;
|
||||
this.samples = jfr.readAllEvents(ExecutionSample.class);
|
||||
}
|
||||
|
||||
public void dump(OutputStream out) throws IOException {
|
||||
long startTime = System.nanoTime();
|
||||
|
||||
int size = samples.size();
|
||||
long durationTicks = size == 0 ? 0 : samples.get(size - 1).time - jfr.startTicks + 1;
|
||||
int samples = jfr.samples.size();
|
||||
long durationTicks = samples == 0 ? 0 : jfr.samples.get(samples - 1).time - jfr.startTicks + 1;
|
||||
|
||||
final Proto profile = new Proto(200000)
|
||||
.field(1, 0.0)
|
||||
@@ -67,23 +63,15 @@ public class jfr2nflx {
|
||||
final Proto nodes = new Proto(10000);
|
||||
final Proto node = new Proto(10000);
|
||||
|
||||
EventAggregator agg = new EventAggregator(false, false);
|
||||
for (ExecutionSample sample : samples) {
|
||||
agg.collect(sample);
|
||||
}
|
||||
|
||||
// Don't use lambda for faster startup
|
||||
agg.forEach(new EventAggregator.Visitor() {
|
||||
jfr.stackTraces.forEach(new Dictionary.Visitor<StackTrace>() {
|
||||
@Override
|
||||
public void visit(Event event, long value) {
|
||||
StackTrace stackTrace = jfr.stackTraces.get(event.stackTraceId);
|
||||
if (stackTrace != null) {
|
||||
profile.field(5, nodes
|
||||
.field(1, event.stackTraceId)
|
||||
.field(2, packNode(node, stackTrace)));
|
||||
nodes.reset();
|
||||
node.reset();
|
||||
}
|
||||
public void visit(long id, StackTrace stackTrace) {
|
||||
profile.field(5, nodes
|
||||
.field(1, (int) id)
|
||||
.field(2, packNode(node, stackTrace)));
|
||||
nodes.reset();
|
||||
node.reset();
|
||||
}
|
||||
});
|
||||
|
||||
@@ -113,7 +101,7 @@ public class jfr2nflx {
|
||||
|
||||
private Proto packSamples() {
|
||||
Proto proto = new Proto(10000);
|
||||
for (ExecutionSample sample : samples) {
|
||||
for (Sample sample : jfr.samples) {
|
||||
proto.writeInt(sample.stackTraceId);
|
||||
}
|
||||
return proto;
|
||||
@@ -123,7 +111,7 @@ public class jfr2nflx {
|
||||
Proto proto = new Proto(10000);
|
||||
double ticksPerSec = jfr.ticksPerSec;
|
||||
long prevTime = jfr.startTicks;
|
||||
for (ExecutionSample sample : samples) {
|
||||
for (Sample sample : jfr.samples) {
|
||||
proto.writeDouble((sample.time - prevTime) / ticksPerSec);
|
||||
prevTime = sample.time;
|
||||
}
|
||||
@@ -132,7 +120,7 @@ public class jfr2nflx {
|
||||
|
||||
private Proto packTids() {
|
||||
Proto proto = new Proto(10000);
|
||||
for (ExecutionSample sample : samples) {
|
||||
for (Sample sample : jfr.samples) {
|
||||
proto.writeInt(sample.tid);
|
||||
}
|
||||
return proto;
|
||||
|
||||
@@ -16,11 +16,6 @@
|
||||
|
||||
package one.jfr;
|
||||
|
||||
import one.jfr.event.AllocationSample;
|
||||
import one.jfr.event.ContendedLock;
|
||||
import one.jfr.event.Event;
|
||||
import one.jfr.event.ExecutionSample;
|
||||
|
||||
import java.io.Closeable;
|
||||
import java.io.IOException;
|
||||
import java.nio.ByteBuffer;
|
||||
@@ -59,13 +54,7 @@ public class JfrReader implements Closeable {
|
||||
public final Dictionary<StackTrace> stackTraces = new Dictionary<>();
|
||||
public final Map<Integer, String> frameTypes = new HashMap<>();
|
||||
public final Map<Integer, String> threadStates = new HashMap<>();
|
||||
|
||||
private final int executionSample;
|
||||
private final int nativeMethodSample;
|
||||
private final int allocationInNewTLAB;
|
||||
private final int allocationOutsideTLAB;
|
||||
private final int monitorEnter;
|
||||
private final int threadPark;
|
||||
public final List<Sample> samples = new ArrayList<>();
|
||||
|
||||
public JfrReader(String fileName) throws IOException {
|
||||
this.ch = FileChannel.open(Paths.get(fileName), StandardOpenOption.READ);
|
||||
@@ -80,8 +69,6 @@ public class JfrReader implements Closeable {
|
||||
throw new IOException("Unsupported JFR version: " + (version >>> 16) + "." + (version & 0xffff));
|
||||
}
|
||||
|
||||
buf.limit((int) buf.getLong(8));
|
||||
|
||||
this.startNanos = buf.getLong(32);
|
||||
this.durationNanos = buf.getLong(40);
|
||||
this.startTicks = buf.getLong(48);
|
||||
@@ -89,15 +76,7 @@ public class JfrReader implements Closeable {
|
||||
|
||||
readMeta();
|
||||
readConstantPool();
|
||||
|
||||
this.executionSample = getTypeId("jdk.ExecutionSample");
|
||||
this.nativeMethodSample = getTypeId("jdk.NativeMethodSample");
|
||||
this.allocationInNewTLAB = getTypeId("jdk.ObjectAllocationInNewTLAB");
|
||||
this.allocationOutsideTLAB = getTypeId("jdk.ObjectAllocationOutsideTLAB");
|
||||
this.monitorEnter = getTypeId("jdk.JavaMonitorEnter");
|
||||
this.threadPark = getTypeId("jdk.ThreadPark");
|
||||
|
||||
buf.position(CHUNK_HEADER_SIZE);
|
||||
readEvents();
|
||||
}
|
||||
|
||||
@Override
|
||||
@@ -105,76 +84,6 @@ public class JfrReader implements Closeable {
|
||||
ch.close();
|
||||
}
|
||||
|
||||
public List<Event> readAllEvents() {
|
||||
return readAllEvents(null);
|
||||
}
|
||||
|
||||
public <E extends Event> List<E> readAllEvents(Class<E> cls) {
|
||||
ArrayList<E> events = new ArrayList<>();
|
||||
for (E event; (event = readEvent(cls)) != null; ) {
|
||||
events.add(event);
|
||||
}
|
||||
Collections.sort(events);
|
||||
return events;
|
||||
}
|
||||
|
||||
public Event readEvent() {
|
||||
return readEvent(null);
|
||||
}
|
||||
|
||||
@SuppressWarnings("unchecked")
|
||||
public <E extends Event> E readEvent(Class<E> cls) {
|
||||
while (buf.hasRemaining()) {
|
||||
int position = buf.position();
|
||||
int size = getVarint();
|
||||
int type = getVarint();
|
||||
|
||||
if (type == executionSample || type == nativeMethodSample) {
|
||||
if (cls == null || cls == ExecutionSample.class) return (E) readExecutionSample();
|
||||
} else if (type == allocationInNewTLAB) {
|
||||
if (cls == null || cls == AllocationSample.class) return (E) readAllocationSample(true);
|
||||
} else if (type == allocationOutsideTLAB) {
|
||||
if (cls == null || cls == AllocationSample.class) return (E) readAllocationSample(false);
|
||||
} else if (type == monitorEnter) {
|
||||
if (cls == null || cls == ContendedLock.class) return (E) readContendedLock(false);
|
||||
} else if (type == threadPark) {
|
||||
if (cls == null || cls == ContendedLock.class) return (E) readContendedLock(true);
|
||||
}
|
||||
|
||||
buf.position(position + size);
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
private ExecutionSample readExecutionSample() {
|
||||
long time = getVarlong();
|
||||
int tid = getVarint();
|
||||
int stackTraceId = getVarint();
|
||||
int threadState = getVarint();
|
||||
return new ExecutionSample(time, tid, stackTraceId, threadState);
|
||||
}
|
||||
|
||||
private AllocationSample readAllocationSample(boolean tlab) {
|
||||
long time = getVarlong();
|
||||
int tid = getVarint();
|
||||
int stackTraceId = getVarint();
|
||||
int classId = getVarint();
|
||||
long allocationSize = getVarlong();
|
||||
long tlabSize = tlab ? getVarlong() : 0;
|
||||
return new AllocationSample(time, tid, stackTraceId, classId, allocationSize, tlabSize);
|
||||
}
|
||||
|
||||
private ContendedLock readContendedLock(boolean hasTimeout) {
|
||||
long time = getVarlong();
|
||||
long duration = getVarlong();
|
||||
int tid = getVarint();
|
||||
int stackTraceId = getVarint();
|
||||
int classId = getVarint();
|
||||
if (hasTimeout) getVarlong();
|
||||
long address = getVarlong();
|
||||
return new ContendedLock(time, tid, stackTraceId, duration, classId);
|
||||
}
|
||||
|
||||
private void readMeta() {
|
||||
buf.position(buf.getInt(META_OFFSET + 4));
|
||||
getVarint();
|
||||
@@ -385,6 +294,38 @@ public class JfrReader implements Closeable {
|
||||
}
|
||||
}
|
||||
|
||||
private void readEvents() {
|
||||
int executionSample = getTypeId("jdk.ExecutionSample");
|
||||
int nativeMethodSample = getTypeId("jdk.NativeMethodSample");
|
||||
|
||||
buf.position(CHUNK_HEADER_SIZE);
|
||||
while (buf.hasRemaining()) {
|
||||
int position = buf.position();
|
||||
int size = getVarint();
|
||||
int type = getVarint();
|
||||
if (type == executionSample || type == nativeMethodSample) {
|
||||
readExecutionSample();
|
||||
} else {
|
||||
buf.position(position + size);
|
||||
}
|
||||
}
|
||||
|
||||
Collections.sort(samples);
|
||||
}
|
||||
|
||||
private void readExecutionSample() {
|
||||
long time = getVarlong();
|
||||
int tid = getVarint();
|
||||
int stackTraceId = getVarint();
|
||||
int threadState = getVarint();
|
||||
samples.add(new Sample(time, tid, stackTraceId, threadState));
|
||||
|
||||
StackTrace stackTrace = stackTraces.get(stackTraceId);
|
||||
if (stackTrace != null) {
|
||||
stackTrace.samples++;
|
||||
}
|
||||
}
|
||||
|
||||
private int getTypeId(String typeName) {
|
||||
JfrClass type = typesByName.get(typeName);
|
||||
return type != null ? type.id : -1;
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
* Copyright 2020 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
@@ -14,34 +14,23 @@
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package one.jfr.event;
|
||||
package one.jfr;
|
||||
|
||||
public abstract class Event implements Comparable<Event> {
|
||||
public class Sample implements Comparable<Sample> {
|
||||
public final long time;
|
||||
public final int tid;
|
||||
public final int stackTraceId;
|
||||
public final int threadState;
|
||||
|
||||
protected Event(long time, int tid, int stackTraceId) {
|
||||
public Sample(long time, int tid, int stackTraceId, int threadState) {
|
||||
this.time = time;
|
||||
this.tid = tid;
|
||||
this.stackTraceId = stackTraceId;
|
||||
this.threadState = threadState;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int compareTo(Event o) {
|
||||
public int compareTo(Sample o) {
|
||||
return Long.compare(time, o.time);
|
||||
}
|
||||
|
||||
@Override
|
||||
public int hashCode() {
|
||||
return stackTraceId;
|
||||
}
|
||||
|
||||
public boolean sameGroup(Event o) {
|
||||
return getClass() == o.getClass();
|
||||
}
|
||||
|
||||
public long value() {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
@@ -19,6 +19,7 @@ package one.jfr;
|
||||
public class StackTrace {
|
||||
public final long[] methods;
|
||||
public final byte[] types;
|
||||
public long samples;
|
||||
|
||||
public StackTrace(long[] methods, byte[] types) {
|
||||
this.methods = methods;
|
||||
|
||||
@@ -1,49 +0,0 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package one.jfr.event;
|
||||
|
||||
public class AllocationSample extends Event {
|
||||
public final int classId;
|
||||
public final long allocationSize;
|
||||
public final long tlabSize;
|
||||
|
||||
public AllocationSample(long time, int tid, int stackTraceId, int classId, long allocationSize, long tlabSize) {
|
||||
super(time, tid, stackTraceId);
|
||||
this.classId = classId;
|
||||
this.allocationSize = allocationSize;
|
||||
this.tlabSize = tlabSize;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int hashCode() {
|
||||
return classId * 127 + stackTraceId + (tlabSize == 0 ? 17 : 0);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean sameGroup(Event o) {
|
||||
if (o instanceof AllocationSample) {
|
||||
AllocationSample a = (AllocationSample) o;
|
||||
return classId == a.classId && (tlabSize == 0) == (a.tlabSize == 0);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
@Override
|
||||
public long value() {
|
||||
return tlabSize != 0 ? tlabSize : allocationSize;
|
||||
}
|
||||
}
|
||||
@@ -1,47 +0,0 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package one.jfr.event;
|
||||
|
||||
public class ContendedLock extends Event {
|
||||
public final long duration;
|
||||
public final int classId;
|
||||
|
||||
public ContendedLock(long time, int tid, int stackTraceId, long duration, int classId) {
|
||||
super(time, tid, stackTraceId);
|
||||
this.duration = duration;
|
||||
this.classId = classId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int hashCode() {
|
||||
return classId * 127 + stackTraceId;
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean sameGroup(Event o) {
|
||||
if (o instanceof ContendedLock) {
|
||||
ContendedLock c = (ContendedLock) o;
|
||||
return classId == c.classId;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
@Override
|
||||
public long value() {
|
||||
return duration;
|
||||
}
|
||||
}
|
||||
@@ -1,103 +0,0 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package one.jfr.event;
|
||||
|
||||
public class EventAggregator {
|
||||
private static final int INITIAL_CAPACITY = 1024;
|
||||
|
||||
private final boolean threads;
|
||||
private final boolean total;
|
||||
private Event[] keys;
|
||||
private long[] values;
|
||||
private int size;
|
||||
|
||||
public EventAggregator(boolean threads, boolean total) {
|
||||
this.threads = threads;
|
||||
this.total = total;
|
||||
this.keys = new Event[INITIAL_CAPACITY];
|
||||
this.values = new long[INITIAL_CAPACITY];
|
||||
}
|
||||
|
||||
public void collect(Event e) {
|
||||
int mask = keys.length - 1;
|
||||
int i = hashCode(e) & mask;
|
||||
while (keys[i] != null) {
|
||||
if (sameGroup(keys[i], e)) {
|
||||
values[i] += total ? e.value() : 1;
|
||||
return;
|
||||
}
|
||||
i = (i + 1) & mask;
|
||||
}
|
||||
|
||||
keys[i] = e;
|
||||
values[i] = total ? e.value() : 1;
|
||||
|
||||
if (++size * 2 > keys.length) {
|
||||
resize(keys.length * 2);
|
||||
}
|
||||
}
|
||||
|
||||
public long getValue(Event e) {
|
||||
int mask = keys.length - 1;
|
||||
int i = hashCode(e) & mask;
|
||||
while (keys[i] != null && !sameGroup(keys[i], e)) {
|
||||
i = (i + 1) & mask;
|
||||
}
|
||||
return values[i];
|
||||
}
|
||||
|
||||
public void forEach(Visitor visitor) {
|
||||
for (int i = 0; i < keys.length; i++) {
|
||||
if (keys[i] != null) {
|
||||
visitor.visit(keys[i], values[i]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private int hashCode(Event e) {
|
||||
return e.hashCode() + (threads ? e.tid * 31 : 0);
|
||||
}
|
||||
|
||||
private boolean sameGroup(Event e1, Event e2) {
|
||||
return e1.stackTraceId == e2.stackTraceId && (!threads || e1.tid == e2.tid) && e1.sameGroup(e2);
|
||||
}
|
||||
|
||||
private void resize(int newCapacity) {
|
||||
Event[] newKeys = new Event[newCapacity];
|
||||
long[] newValues = new long[newCapacity];
|
||||
int mask = newKeys.length - 1;
|
||||
|
||||
for (int i = 0; i < keys.length; i++) {
|
||||
if (keys[i] != null) {
|
||||
for (int j = hashCode(keys[i]) & mask; ; j = (j + 1) & mask) {
|
||||
if (newKeys[j] == null) {
|
||||
newKeys[j] = keys[i];
|
||||
newValues[j] = values[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
keys = newKeys;
|
||||
values = newValues;
|
||||
}
|
||||
|
||||
public interface Visitor {
|
||||
void visit(Event event, long value);
|
||||
}
|
||||
}
|
||||
@@ -1,26 +0,0 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package one.jfr.event;
|
||||
|
||||
public class ExecutionSample extends Event {
|
||||
public final int threadState;
|
||||
|
||||
public ExecutionSample(long time, int tid, int stackTraceId, int threadState) {
|
||||
super(time, tid, stackTraceId);
|
||||
this.threadState = threadState;
|
||||
}
|
||||
}
|
||||
@@ -24,11 +24,8 @@ Error Engine::check(Arguments& args) {
|
||||
return Error::OK;
|
||||
}
|
||||
|
||||
Error Engine::start(Arguments& args) {
|
||||
return Error::OK;
|
||||
}
|
||||
|
||||
void Engine::stop() {
|
||||
CStack Engine::cstack() {
|
||||
return CSTACK_FP;
|
||||
}
|
||||
|
||||
int Engine::getNativeTrace(void* ucontext, int tid, const void** callchain, int max_depth,
|
||||
@@ -69,7 +66,7 @@ int Engine::getNativeTrace(void* ucontext, int tid, const void** callchain, int
|
||||
}
|
||||
|
||||
prev_fp = fp;
|
||||
pc = stripPointer(((const void**)fp)[1]);
|
||||
pc = ((const void**)fp)[1];
|
||||
fp = ((uintptr_t*)fp)[0];
|
||||
}
|
||||
|
||||
|
||||
36
src/engine.h
36
src/engine.h
@@ -26,18 +26,14 @@ class Engine {
|
||||
static volatile bool _enabled;
|
||||
|
||||
public:
|
||||
virtual const char* title() {
|
||||
return "Flame Graph";
|
||||
}
|
||||
|
||||
virtual const char* units() {
|
||||
return "total";
|
||||
}
|
||||
virtual const char* name() = 0;
|
||||
virtual const char* units() = 0;
|
||||
|
||||
virtual Error check(Arguments& args);
|
||||
virtual Error start(Arguments& args);
|
||||
virtual void stop();
|
||||
virtual Error start(Arguments& args) = 0;
|
||||
virtual void stop() = 0;
|
||||
|
||||
virtual CStack cstack();
|
||||
virtual int getNativeTrace(void* ucontext, int tid, const void** callchain, int max_depth,
|
||||
CodeCache* java_methods, CodeCache* runtime_stubs);
|
||||
|
||||
@@ -46,4 +42,26 @@ class Engine {
|
||||
}
|
||||
};
|
||||
|
||||
class NoopEngine : public Engine {
|
||||
public:
|
||||
const char* name() {
|
||||
return "noop";
|
||||
}
|
||||
|
||||
const char* units() {
|
||||
return "ns";
|
||||
}
|
||||
|
||||
Error start(Arguments& args) {
|
||||
return Error::OK;
|
||||
}
|
||||
|
||||
void stop() {
|
||||
}
|
||||
|
||||
CStack cstack() {
|
||||
return CSTACK_NO;
|
||||
}
|
||||
};
|
||||
|
||||
#endif // _ENGINE_H
|
||||
|
||||
@@ -20,9 +20,6 @@
|
||||
#include "flameGraph.h"
|
||||
|
||||
|
||||
// Browsers refuse to draw on canvas larger than 32767 px
|
||||
const int MAX_CANVAS_HEIGHT = 32767;
|
||||
|
||||
static const char FLAMEGRAPH_HEADER[] =
|
||||
"<!DOCTYPE html>\n"
|
||||
"<html lang='en'>\n"
|
||||
@@ -416,9 +413,9 @@ class StringUtils {
|
||||
return len >= suffixlen && s.compare(len - suffixlen, suffixlen, suffix) == 0;
|
||||
}
|
||||
|
||||
static void replace(std::string& s, char c, const char* replacement, size_t rlen) {
|
||||
for (size_t i = 0; (i = s.find(c, i)) != std::string::npos; i += rlen) {
|
||||
s.replace(i, 1, replacement, rlen);
|
||||
static void replace(std::string& s, char c, const char* replacement) {
|
||||
for (size_t i = 0; (i = s.find(c, i)) != std::string::npos; i++) {
|
||||
s.replace(i, 1, replacement);
|
||||
}
|
||||
}
|
||||
};
|
||||
@@ -482,8 +479,7 @@ void FlameGraph::dump(std::ostream& out, bool tree) {
|
||||
out << TREE_FOOTER;
|
||||
} else {
|
||||
char buf[sizeof(FLAMEGRAPH_HEADER) + 256];
|
||||
snprintf(buf, sizeof(buf) - 1, FLAMEGRAPH_HEADER, _title,
|
||||
std::min(depth * 16, MAX_CANVAS_HEIGHT), _reverse ? "true" : "false", depth);
|
||||
snprintf(buf, sizeof(buf) - 1, FLAMEGRAPH_HEADER, _title, depth * 16, _reverse ? "true" : "false", depth);
|
||||
out << buf;
|
||||
|
||||
printFrame(out, "all", _root, 0, 0);
|
||||
@@ -495,7 +491,7 @@ void FlameGraph::dump(std::ostream& out, bool tree) {
|
||||
void FlameGraph::printFrame(std::ostream& out, const std::string& name, const Trie& f, int level, u64 x) {
|
||||
std::string name_copy = name;
|
||||
int type = frameType(name_copy);
|
||||
StringUtils::replace(name_copy, '\'', "\\'", 2);
|
||||
StringUtils::replace(name_copy, '\'', "\\'");
|
||||
|
||||
snprintf(_buf, sizeof(_buf) - 1, "f(%d,%llu,%llu,%d,'%s')\n", level, x, f._total, type, name_copy.c_str());
|
||||
out << _buf;
|
||||
@@ -522,9 +518,9 @@ void FlameGraph::printTreeFrame(std::ostream& out, const Trie& f, int level) {
|
||||
const Trie* trie = subnodes[i]._trie;
|
||||
|
||||
int type = frameType(name);
|
||||
StringUtils::replace(name, '&', "&", 5);
|
||||
StringUtils::replace(name, '<', "<", 4);
|
||||
StringUtils::replace(name, '>', ">", 4);
|
||||
StringUtils::replace(name, '&', "&");
|
||||
StringUtils::replace(name, '<', "<");
|
||||
StringUtils::replace(name, '>', ">");
|
||||
|
||||
if (_reverse) {
|
||||
snprintf(_buf, sizeof(_buf) - 1,
|
||||
|
||||
@@ -18,7 +18,6 @@
|
||||
#include <string>
|
||||
#include <arpa/inet.h>
|
||||
#include <cxxabi.h>
|
||||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
@@ -29,25 +28,20 @@
|
||||
#include "flightRecorder.h"
|
||||
#include "jfrMetadata.h"
|
||||
#include "dictionary.h"
|
||||
#include "log.h"
|
||||
#include "os.h"
|
||||
#include "profiler.h"
|
||||
#include "threadFilter.h"
|
||||
#include "vmStructs.h"
|
||||
|
||||
|
||||
static const unsigned char JFR_COMBINER_CLASS[] = {
|
||||
#include "helper/one/profiler/JfrCombiner.class.h"
|
||||
};
|
||||
|
||||
|
||||
const int BUFFER_SIZE = 1024;
|
||||
const int BUFFER_LIMIT = BUFFER_SIZE - 128;
|
||||
const int RECORDING_BUFFER_SIZE = 65536;
|
||||
const int RECORDING_BUFFER_LIMIT = RECORDING_BUFFER_SIZE - 4096;
|
||||
const int MAX_STRING_LENGTH = 8191;
|
||||
const int MAX_STRING_LENGTH = 16383;
|
||||
|
||||
|
||||
static const char* const SETTING_COUNTER[] = {"samples", "total"};
|
||||
static const char* const SETTING_RING[] = {NULL, "kernel", "user"};
|
||||
static const char* const SETTING_CSTACK[] = {NULL, "no", "fp", "lbr"};
|
||||
|
||||
@@ -129,9 +123,9 @@ class Buffer {
|
||||
_offset = 0;
|
||||
}
|
||||
|
||||
void put(const char* v, u32 len) {
|
||||
void put(const char* v, int len) {
|
||||
memcpy(_data + _offset, v, len);
|
||||
_offset += (int)len;
|
||||
_offset += len;
|
||||
}
|
||||
|
||||
void put8(char v) {
|
||||
@@ -163,27 +157,13 @@ class Buffer {
|
||||
put32(u.i);
|
||||
}
|
||||
|
||||
void putVar32(u32 v) {
|
||||
while (v > 0x7f) {
|
||||
_data[_offset++] = (char)v | 0x80;
|
||||
v >>= 7;
|
||||
void putVarint(u64 v) {
|
||||
char b = v;
|
||||
while ((v >>= 7) != 0) {
|
||||
_data[_offset++] = b | 0x80;
|
||||
b = v;
|
||||
}
|
||||
_data[_offset++] = (char)v;
|
||||
}
|
||||
|
||||
void putVar64(u64 v) {
|
||||
int iter = 0;
|
||||
while (v > 0x1fffff) {
|
||||
_data[_offset++] = (char)v | 0x80; v >>= 7;
|
||||
_data[_offset++] = (char)v | 0x80; v >>= 7;
|
||||
_data[_offset++] = (char)v | 0x80; v >>= 7;
|
||||
if (++iter == 3) return;
|
||||
}
|
||||
while (v > 0x7f) {
|
||||
_data[_offset++] = (char)v | 0x80;
|
||||
v >>= 7;
|
||||
}
|
||||
_data[_offset++] = (char)v;
|
||||
_data[_offset++] = b;
|
||||
}
|
||||
|
||||
void putUtf8(const char* v) {
|
||||
@@ -194,9 +174,9 @@ class Buffer {
|
||||
}
|
||||
}
|
||||
|
||||
void putUtf8(const char* v, u32 len) {
|
||||
void putUtf8(const char* v, int len) {
|
||||
put8(3);
|
||||
putVar32(len);
|
||||
putVarint(len);
|
||||
put(v, len);
|
||||
}
|
||||
|
||||
@@ -226,7 +206,6 @@ class RecordingBuffer : public Buffer {
|
||||
class Recording {
|
||||
private:
|
||||
static SpinLock _cpu_monitor_lock;
|
||||
static int _append_fd;
|
||||
|
||||
static char* _agent_properties;
|
||||
static char* _jvm_args;
|
||||
@@ -235,7 +214,7 @@ class Recording {
|
||||
|
||||
RecordingBuffer _buf[CONCURRENCY_LEVEL];
|
||||
int _fd;
|
||||
off_t _chunk_start;
|
||||
off_t _file_offset;
|
||||
ThreadFilter _thread_set;
|
||||
Dictionary _packages;
|
||||
Dictionary _symbols;
|
||||
@@ -250,19 +229,17 @@ class Recording {
|
||||
Timer* _cpu_monitor;
|
||||
CpuTimes _last_times;
|
||||
|
||||
void startCpuMonitor(bool enabled) {
|
||||
void startCpuMonitor() {
|
||||
_last_times.proc.real = OS::getProcessCpuTime(&_last_times.proc.user, &_last_times.proc.system);
|
||||
_last_times.total.real = OS::getTotalCpuTime(&_last_times.total.user, &_last_times.total.system);
|
||||
|
||||
_cpu_monitor = enabled ? OS::startTimer(1000000000, cpuMonitorCallback, this) : NULL;
|
||||
_cpu_monitor = OS::startTimer(1000000000, cpuMonitorCallback, this);
|
||||
_cpu_monitor_lock.unlock();
|
||||
}
|
||||
|
||||
void stopCpuMonitor() {
|
||||
_cpu_monitor_lock.lock();
|
||||
if (_cpu_monitor != NULL) {
|
||||
OS::stopTimer(_cpu_monitor);
|
||||
}
|
||||
OS::stopTimer(_cpu_monitor);
|
||||
}
|
||||
|
||||
void cpuMonitorCycle() {
|
||||
@@ -288,7 +265,10 @@ class Recording {
|
||||
}
|
||||
|
||||
recordCpuLoad(&_cpu_monitor_buf, proc_user, proc_system, machine_total);
|
||||
flushIfNeeded(&_cpu_monitor_buf, BUFFER_LIMIT);
|
||||
|
||||
if (_cpu_monitor_buf.offset() > BUFFER_LIMIT) {
|
||||
flush(&_cpu_monitor_buf);
|
||||
}
|
||||
|
||||
_last_times = times;
|
||||
}
|
||||
@@ -306,7 +286,7 @@ class Recording {
|
||||
|
||||
public:
|
||||
Recording(int fd, Arguments& args) : _fd(fd), _thread_set(), _packages(), _symbols(), _method_map() {
|
||||
_chunk_start = lseek(_fd, 0, SEEK_END);
|
||||
_file_offset = lseek(_fd, 0, SEEK_END);
|
||||
_start_time = OS::millis();
|
||||
_start_nanos = OS::nanotime();
|
||||
_tid = OS::threadId();
|
||||
@@ -317,16 +297,12 @@ class Recording {
|
||||
writeMetadata(_buf);
|
||||
writeRecordingInfo(_buf);
|
||||
writeSettings(_buf, args);
|
||||
if (!args.hasOption(NO_SYSTEM_INFO)) {
|
||||
writeOsCpuInfo(_buf);
|
||||
writeJvmInfo(_buf);
|
||||
}
|
||||
if (!args.hasOption(NO_SYSTEM_PROPS)) {
|
||||
writeSystemProperties(_buf);
|
||||
}
|
||||
writeOsCpuInfo(_buf);
|
||||
writeJvmInfo(_buf);
|
||||
writeSystemProperties(_buf);
|
||||
flush(_buf);
|
||||
|
||||
startCpuMonitor(!args.hasOption(NO_CPU_LOAD));
|
||||
startCpuMonitor();
|
||||
}
|
||||
|
||||
~Recording() {
|
||||
@@ -344,48 +320,25 @@ class Recording {
|
||||
writeCpool(_buf);
|
||||
flush(_buf);
|
||||
|
||||
off_t chunk_end = lseek(_fd, 0, SEEK_CUR);
|
||||
off_t chunk_size = lseek(_fd, 0, SEEK_CUR);
|
||||
|
||||
// Patch cpool size field
|
||||
_buf->putVar32(0, chunk_end - cpool_offset);
|
||||
// Patch checkpoint size field
|
||||
_buf->putVar32(0, chunk_size - cpool_offset);
|
||||
ssize_t result = pwrite(_fd, _buf->data(), 5, cpool_offset);
|
||||
(void)result;
|
||||
|
||||
// Patch chunk header
|
||||
_buf->put64(chunk_end - _chunk_start);
|
||||
_buf->put64(cpool_offset - _chunk_start);
|
||||
_buf->put64(chunk_size);
|
||||
_buf->put64(cpool_offset);
|
||||
_buf->put64(68);
|
||||
_buf->put64(_start_time * 1000000);
|
||||
_buf->put64(_stop_nanos - _start_nanos);
|
||||
result = pwrite(_fd, _buf->data(), 40, _chunk_start + 8);
|
||||
result = pwrite(_fd, _buf->data(), 40, 8);
|
||||
(void)result;
|
||||
|
||||
if (_append_fd >= 0) {
|
||||
OS::copyFile(_fd, _append_fd, 0, chunk_end);
|
||||
}
|
||||
|
||||
close(_fd);
|
||||
}
|
||||
|
||||
static void JNICALL appendRecording(JNIEnv* env, jclass cls, jstring file_name) {
|
||||
const char* file_name_str = env->GetStringUTFChars(file_name, NULL);
|
||||
if (file_name_str == NULL) {
|
||||
return;
|
||||
}
|
||||
|
||||
_append_fd = open(file_name_str, O_WRONLY);
|
||||
if (_append_fd >= 0) {
|
||||
lseek(_append_fd, 0, SEEK_END);
|
||||
Profiler::_instance.stop();
|
||||
close(_append_fd);
|
||||
_append_fd = -1;
|
||||
} else {
|
||||
Log::warn("Failed to open JFR recording at %s: %s", file_name_str, strerror(errno));
|
||||
}
|
||||
|
||||
env->ReleaseStringUTFChars(file_name, file_name_str);
|
||||
}
|
||||
|
||||
Buffer* buffer(int lock_index) {
|
||||
return &_buf[lock_index];
|
||||
}
|
||||
@@ -539,8 +492,8 @@ class Recording {
|
||||
buf->reset();
|
||||
}
|
||||
|
||||
void flushIfNeeded(Buffer* buf, int limit = RECORDING_BUFFER_LIMIT) {
|
||||
if (buf->offset() >= limit) {
|
||||
void flushIfNeeded(Buffer* buf) {
|
||||
if (buf->offset() >= RECORDING_BUFFER_LIMIT) {
|
||||
flush(buf);
|
||||
}
|
||||
}
|
||||
@@ -561,13 +514,13 @@ class Recording {
|
||||
|
||||
void writeMetadata(Buffer* buf) {
|
||||
int metadata_start = buf->skip(5); // size will be patched later
|
||||
buf->putVar32(T_METADATA);
|
||||
buf->putVar64(_start_nanos);
|
||||
buf->putVar32(0);
|
||||
buf->putVar32(1);
|
||||
buf->putVarint(T_METADATA);
|
||||
buf->putVarint(_start_nanos);
|
||||
buf->putVarint(0);
|
||||
buf->putVarint(1);
|
||||
|
||||
std::vector<std::string>& strings = JfrMetadata::strings();
|
||||
buf->putVar32(strings.size());
|
||||
buf->putVarint(strings.size());
|
||||
for (int i = 0; i < strings.size(); i++) {
|
||||
buf->putUtf8(strings[i].c_str());
|
||||
}
|
||||
@@ -578,15 +531,15 @@ class Recording {
|
||||
}
|
||||
|
||||
void writeElement(Buffer* buf, const Element* e) {
|
||||
buf->putVar32(e->_name);
|
||||
buf->putVarint(e->_name);
|
||||
|
||||
buf->putVar32(e->_attributes.size());
|
||||
buf->putVarint(e->_attributes.size());
|
||||
for (int i = 0; i < e->_attributes.size(); i++) {
|
||||
buf->putVar32(e->_attributes[i]._key);
|
||||
buf->putVar32(e->_attributes[i]._value);
|
||||
buf->putVarint(e->_attributes[i]._key);
|
||||
buf->putVarint(e->_attributes[i]._value);
|
||||
}
|
||||
|
||||
buf->putVar32(e->_children.size());
|
||||
buf->putVarint(e->_children.size());
|
||||
for (int i = 0; i < e->_children.size(); i++) {
|
||||
writeElement(buf, e->_children[i]);
|
||||
}
|
||||
@@ -595,24 +548,25 @@ class Recording {
|
||||
void writeRecordingInfo(Buffer* buf) {
|
||||
int start = buf->skip(1);
|
||||
buf->put8(T_ACTIVE_RECORDING);
|
||||
buf->putVar64(_start_nanos);
|
||||
buf->putVar32(0);
|
||||
buf->putVar32(_tid);
|
||||
buf->putVar32(1);
|
||||
buf->putVarint(_start_nanos);
|
||||
buf->putVarint(0);
|
||||
buf->putVarint(_tid);
|
||||
buf->putVarint(1);
|
||||
buf->putUtf8("async-profiler " PROFILER_VERSION);
|
||||
buf->putUtf8("async-profiler.jfr");
|
||||
buf->putVar64(0x7fffffffffffffffULL);
|
||||
buf->putVar32(0);
|
||||
buf->putVar64(_start_time);
|
||||
buf->putVar64(0x7fffffffffffffffULL);
|
||||
buf->putVarint(0x7fffffffffffffffULL);
|
||||
buf->putVarint(0);
|
||||
buf->putVarint(_start_time);
|
||||
buf->putVarint(0x7fffffffffffffffULL);
|
||||
buf->put8(start, buf->offset() - start);
|
||||
}
|
||||
|
||||
void writeSettings(Buffer* buf, Arguments& args) {
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "version", PROFILER_VERSION);
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "counter", SETTING_COUNTER[args._counter]);
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "ring", SETTING_RING[args._ring]);
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "cstack", SETTING_CSTACK[args._cstack]);
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "event", args._event);
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "event", args._event_desc);
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "filter", args._filter);
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "begin", args._begin);
|
||||
writeStringSetting(buf, T_ACTIVE_RECORDING, "end", args._end);
|
||||
@@ -620,33 +574,21 @@ class Recording {
|
||||
writeListSetting(buf, T_ACTIVE_RECORDING, "exclude", args._buf, args._exclude);
|
||||
writeIntSetting(buf, T_ACTIVE_RECORDING, "jstackdepth", args._jstackdepth);
|
||||
writeIntSetting(buf, T_ACTIVE_RECORDING, "safemode", args._safe_mode);
|
||||
writeIntSetting(buf, T_ACTIVE_RECORDING, "jfropts", args._jfr_options);
|
||||
|
||||
writeBoolSetting(buf, T_EXECUTION_SAMPLE, "enabled", args._event != NULL);
|
||||
if (args._event != NULL) {
|
||||
writeIntSetting(buf, T_EXECUTION_SAMPLE, "interval", args._interval);
|
||||
}
|
||||
|
||||
writeBoolSetting(buf, T_ALLOC_IN_NEW_TLAB, "enabled", args._alloc > 0);
|
||||
writeBoolSetting(buf, T_ALLOC_OUTSIDE_TLAB, "enabled", args._alloc > 0);
|
||||
if (args._alloc > 0) {
|
||||
writeIntSetting(buf, T_ALLOC_IN_NEW_TLAB, "alloc", args._alloc);
|
||||
}
|
||||
|
||||
writeBoolSetting(buf, T_MONITOR_ENTER, "enabled", args._lock > 0);
|
||||
writeBoolSetting(buf, T_THREAD_PARK, "enabled", args._lock > 0);
|
||||
if (args._lock > 0) {
|
||||
writeIntSetting(buf, T_MONITOR_ENTER, "lock", args._lock);
|
||||
}
|
||||
writeBoolSetting(buf, T_EXECUTION_SAMPLE, "enabled", args._events & EK_CPU);
|
||||
writeIntSetting(buf, T_EXECUTION_SAMPLE, "interval", args._interval);
|
||||
writeBoolSetting(buf, T_ALLOC_IN_NEW_TLAB, "enabled", args._events & EK_ALLOC);
|
||||
writeBoolSetting(buf, T_ALLOC_OUTSIDE_TLAB, "enabled", args._events & EK_ALLOC);
|
||||
writeBoolSetting(buf, T_MONITOR_ENTER, "enabled", args._events & EK_LOCK);
|
||||
writeBoolSetting(buf, T_THREAD_PARK, "enabled", args._events & EK_LOCK);
|
||||
}
|
||||
|
||||
void writeStringSetting(Buffer* buf, int category, const char* key, const char* value) {
|
||||
int start = buf->skip(5);
|
||||
buf->put8(T_ACTIVE_SETTING);
|
||||
buf->putVar64(_start_nanos);
|
||||
buf->putVar32(0);
|
||||
buf->putVar32(_tid);
|
||||
buf->putVar32(category);
|
||||
buf->putVarint(_start_nanos);
|
||||
buf->putVarint(0);
|
||||
buf->putVarint(_tid);
|
||||
buf->putVarint(category);
|
||||
buf->putUtf8(key);
|
||||
buf->putUtf8(value);
|
||||
buf->putVar32(start, buf->offset() - start);
|
||||
@@ -682,18 +624,18 @@ class Recording {
|
||||
|
||||
int start = buf->skip(5);
|
||||
buf->put8(T_OS_INFORMATION);
|
||||
buf->putVar64(_start_nanos);
|
||||
buf->putVarint(_start_nanos);
|
||||
buf->putUtf8(str);
|
||||
buf->putVar32(start, buf->offset() - start);
|
||||
|
||||
start = buf->skip(5);
|
||||
buf->put8(T_CPU_INFORMATION);
|
||||
buf->putVar64(_start_nanos);
|
||||
buf->putVarint(_start_nanos);
|
||||
buf->putUtf8(u.machine);
|
||||
buf->putUtf8(OS::getCpuDescription(str, sizeof(str) - 1) ? str : "");
|
||||
buf->putVar32(1);
|
||||
buf->putVar32(_available_processors);
|
||||
buf->putVar32(_available_processors);
|
||||
buf->putVarint(1);
|
||||
buf->putVarint(_available_processors);
|
||||
buf->putVarint(_available_processors);
|
||||
buf->putVar32(start, buf->offset() - start);
|
||||
}
|
||||
|
||||
@@ -709,18 +651,18 @@ class Recording {
|
||||
jvmti->GetSystemProperty("java.vm.name", &jvm_name);
|
||||
jvmti->GetSystemProperty("java.vm.version", &jvm_version);
|
||||
|
||||
flushIfNeeded(buf, RECORDING_BUFFER_LIMIT - 5 * MAX_STRING_LENGTH);
|
||||
int start = buf->skip(5);
|
||||
buf->put8(T_JVM_INFORMATION);
|
||||
buf->putVar64(_start_nanos);
|
||||
buf->putVarint(_start_nanos);
|
||||
buf->putUtf8(jvm_name);
|
||||
buf->putUtf8(jvm_version);
|
||||
buf->putUtf8(_jvm_args);
|
||||
buf->putUtf8(_jvm_flags);
|
||||
buf->putUtf8(_java_command);
|
||||
buf->putVar64(OS::processStartTime());
|
||||
buf->putVar32(OS::processId());
|
||||
buf->putVarint(OS::processStartTime());
|
||||
buf->putVarint(OS::processId());
|
||||
buf->putVar32(start, buf->offset() - start);
|
||||
flushIfNeeded(buf);
|
||||
|
||||
jvmti->Deallocate((unsigned char*)jvm_version);
|
||||
jvmti->Deallocate((unsigned char*)jvm_name);
|
||||
@@ -738,29 +680,30 @@ class Recording {
|
||||
char* key = keys[i];
|
||||
char* value = NULL;
|
||||
if (jvmti->GetSystemProperty(key, &value) == 0) {
|
||||
flushIfNeeded(buf, RECORDING_BUFFER_LIMIT - 2 * MAX_STRING_LENGTH);
|
||||
int start = buf->skip(5);
|
||||
buf->put8(T_INITIAL_SYSTEM_PROPERTY);
|
||||
buf->putVar64(_start_nanos);
|
||||
buf->putVarint(_start_nanos);
|
||||
buf->putUtf8(key);
|
||||
buf->putUtf8(value);
|
||||
buf->putVar32(start, buf->offset() - start);
|
||||
flushIfNeeded(buf);
|
||||
jvmti->Deallocate((unsigned char*)value);
|
||||
}
|
||||
}
|
||||
|
||||
jvmti->Deallocate((unsigned char*)keys);
|
||||
|
||||
}
|
||||
|
||||
void writeCpool(Buffer* buf) {
|
||||
buf->skip(5); // size will be patched later
|
||||
buf->putVar32(T_CPOOL);
|
||||
buf->putVar64(_start_nanos);
|
||||
buf->putVar32(0);
|
||||
buf->putVar32(0);
|
||||
buf->putVar32(1);
|
||||
buf->putVarint(T_CPOOL);
|
||||
buf->putVarint(_start_nanos);
|
||||
buf->putVarint(0);
|
||||
buf->putVarint(0);
|
||||
buf->putVarint(1);
|
||||
|
||||
buf->putVar32(8);
|
||||
buf->putVarint(8);
|
||||
|
||||
writeFrameTypes(buf);
|
||||
writeThreadStates(buf);
|
||||
@@ -773,21 +716,21 @@ class Recording {
|
||||
}
|
||||
|
||||
void writeFrameTypes(Buffer* buf) {
|
||||
buf->putVar32(T_FRAME_TYPE);
|
||||
buf->putVar32(6);
|
||||
buf->putVar32(FRAME_INTERPRETED); buf->putUtf8("Interpreted");
|
||||
buf->putVar32(FRAME_JIT_COMPILED); buf->putUtf8("JIT compiled");
|
||||
buf->putVar32(FRAME_INLINED); buf->putUtf8("Inlined");
|
||||
buf->putVar32(FRAME_NATIVE); buf->putUtf8("Native");
|
||||
buf->putVar32(FRAME_CPP); buf->putUtf8("C++");
|
||||
buf->putVar32(FRAME_KERNEL); buf->putUtf8("Kernel");
|
||||
buf->putVarint(T_FRAME_TYPE);
|
||||
buf->putVarint(6);
|
||||
buf->putVarint(FRAME_INTERPRETED); buf->putUtf8("Interpreted");
|
||||
buf->putVarint(FRAME_JIT_COMPILED); buf->putUtf8("JIT compiled");
|
||||
buf->putVarint(FRAME_INLINED); buf->putUtf8("Inlined");
|
||||
buf->putVarint(FRAME_NATIVE); buf->putUtf8("Native");
|
||||
buf->putVarint(FRAME_CPP); buf->putUtf8("C++");
|
||||
buf->putVarint(FRAME_KERNEL); buf->putUtf8("Kernel");
|
||||
}
|
||||
|
||||
void writeThreadStates(Buffer* buf) {
|
||||
buf->putVar32(T_THREAD_STATE);
|
||||
buf->putVar32(2);
|
||||
buf->putVar32(THREAD_RUNNING); buf->putUtf8("STATE_RUNNABLE");
|
||||
buf->putVar32(THREAD_SLEEPING); buf->putUtf8("STATE_SLEEPING");
|
||||
buf->putVarint(T_THREAD_STATE);
|
||||
buf->putVarint(2);
|
||||
buf->putVarint(THREAD_RUNNING); buf->putUtf8("STATE_RUNNABLE");
|
||||
buf->putVarint(THREAD_SLEEPING); buf->putUtf8("STATE_SLEEPING");
|
||||
}
|
||||
|
||||
void writeThreads(Buffer* buf) {
|
||||
@@ -799,8 +742,8 @@ class Recording {
|
||||
std::map<int, jlong>& thread_ids = Profiler::_instance._thread_ids;
|
||||
char name_buf[32];
|
||||
|
||||
buf->putVar32(T_THREAD);
|
||||
buf->putVar32(threads.size());
|
||||
buf->putVarint(T_THREAD);
|
||||
buf->putVarint(threads.size());
|
||||
for (int i = 0; i < threads.size(); i++) {
|
||||
const char* thread_name;
|
||||
jlong thread_id;
|
||||
@@ -814,15 +757,15 @@ class Recording {
|
||||
thread_id = 0;
|
||||
}
|
||||
|
||||
buf->putVar32(threads[i]);
|
||||
buf->putVarint(threads[i]);
|
||||
buf->putUtf8(thread_name);
|
||||
buf->putVar32(threads[i]);
|
||||
buf->putVarint(threads[i]);
|
||||
if (thread_id == 0) {
|
||||
buf->put8(0);
|
||||
} else {
|
||||
buf->putUtf8(thread_name);
|
||||
}
|
||||
buf->putVar64(thread_id);
|
||||
buf->putVarint(thread_id);
|
||||
flushIfNeeded(buf);
|
||||
}
|
||||
}
|
||||
@@ -831,25 +774,25 @@ class Recording {
|
||||
std::map<u32, CallTrace*> traces;
|
||||
Profiler::_instance._call_trace_storage.collectTraces(traces);
|
||||
|
||||
buf->putVar32(T_STACK_TRACE);
|
||||
buf->putVar32(traces.size());
|
||||
buf->putVarint(T_STACK_TRACE);
|
||||
buf->putVarint(traces.size());
|
||||
for (std::map<u32, CallTrace*>::const_iterator it = traces.begin(); it != traces.end(); ++it) {
|
||||
CallTrace* trace = it->second;
|
||||
buf->putVar32(it->first);
|
||||
buf->putVar32(0); // truncated
|
||||
buf->putVar32(trace->num_frames);
|
||||
buf->putVarint(it->first);
|
||||
buf->putVarint(0); // truncated
|
||||
buf->putVarint(trace->num_frames);
|
||||
for (int i = 0; i < trace->num_frames; i++) {
|
||||
MethodInfo* mi = resolveMethod(trace->frames[i]);
|
||||
buf->putVar32(mi->_key);
|
||||
buf->putVarint(mi->_key);
|
||||
jint bci = trace->frames[i].bci;
|
||||
if (bci >= 0) {
|
||||
buf->putVar32(mi->getLineNumber(bci));
|
||||
buf->putVar32(bci);
|
||||
buf->putVarint(mi->getLineNumber(bci));
|
||||
buf->putVarint(bci);
|
||||
} else {
|
||||
buf->put8(0);
|
||||
buf->put8(0);
|
||||
}
|
||||
buf->putVar32(mi->_type);
|
||||
buf->putVarint(mi->_type);
|
||||
flushIfNeeded(buf);
|
||||
}
|
||||
flushIfNeeded(buf);
|
||||
@@ -859,16 +802,16 @@ class Recording {
|
||||
void writeMethods(Buffer* buf) {
|
||||
jvmtiEnv* jvmti = VM::jvmti();
|
||||
|
||||
buf->putVar32(T_METHOD);
|
||||
buf->putVar32(_method_map.size());
|
||||
buf->putVarint(T_METHOD);
|
||||
buf->putVarint(_method_map.size());
|
||||
for (std::map<jmethodID, MethodInfo>::const_iterator it = _method_map.begin(); it != _method_map.end(); ++it) {
|
||||
const MethodInfo& mi = it->second;
|
||||
buf->putVar32(mi._key);
|
||||
buf->putVar32(mi._class);
|
||||
buf->putVar32(mi._name);
|
||||
buf->putVar32(mi._sig);
|
||||
buf->putVar32(mi._modifiers);
|
||||
buf->putVar32(0); // hidden
|
||||
buf->putVarint(mi._key);
|
||||
buf->putVarint(mi._class);
|
||||
buf->putVarint(mi._name);
|
||||
buf->putVarint(mi._sig);
|
||||
buf->putVarint(mi._modifiers);
|
||||
buf->putVarint(0); // hidden
|
||||
flushIfNeeded(buf);
|
||||
|
||||
if (mi._line_number_table != NULL) {
|
||||
@@ -881,15 +824,15 @@ class Recording {
|
||||
std::map<u32, const char*> classes;
|
||||
Profiler::_instance.classMap()->collect(classes);
|
||||
|
||||
buf->putVar32(T_CLASS);
|
||||
buf->putVar32(classes.size());
|
||||
buf->putVarint(T_CLASS);
|
||||
buf->putVarint(classes.size());
|
||||
for (std::map<u32, const char*>::const_iterator it = classes.begin(); it != classes.end(); ++it) {
|
||||
const char* name = it->second;
|
||||
buf->putVar32(it->first);
|
||||
buf->putVar32(0); // classLoader
|
||||
buf->putVar32(_symbols.lookup(name));
|
||||
buf->putVar32(getPackage(name));
|
||||
buf->putVar32(0); // access flags
|
||||
buf->putVarint(it->first);
|
||||
buf->putVarint(0); // classLoader
|
||||
buf->putVarint(_symbols.lookup(name));
|
||||
buf->putVarint(getPackage(name));
|
||||
buf->putVarint(0); // access flags
|
||||
flushIfNeeded(buf);
|
||||
}
|
||||
}
|
||||
@@ -898,11 +841,11 @@ class Recording {
|
||||
std::map<u32, const char*> packages;
|
||||
_packages.collect(packages);
|
||||
|
||||
buf->putVar32(T_PACKAGE);
|
||||
buf->putVar32(packages.size());
|
||||
buf->putVarint(T_PACKAGE);
|
||||
buf->putVarint(packages.size());
|
||||
for (std::map<u32, const char*>::const_iterator it = packages.begin(); it != packages.end(); ++it) {
|
||||
buf->putVar32(it->first);
|
||||
buf->putVar32(_symbols.lookup(it->second));
|
||||
buf->putVarint(it->first);
|
||||
buf->putVarint(_symbols.lookup(it->second));
|
||||
flushIfNeeded(buf);
|
||||
}
|
||||
}
|
||||
@@ -911,10 +854,10 @@ class Recording {
|
||||
std::map<u32, const char*> symbols;
|
||||
_symbols.collect(symbols);
|
||||
|
||||
buf->putVar32(T_SYMBOL);
|
||||
buf->putVar32(symbols.size());
|
||||
buf->putVarint(T_SYMBOL);
|
||||
buf->putVarint(symbols.size());
|
||||
for (std::map<u32, const char*>::const_iterator it = symbols.begin(); it != symbols.end(); ++it) {
|
||||
buf->putVar32(it->first);
|
||||
buf->putVarint(it->first);
|
||||
buf->putUtf8(it->second);
|
||||
flushIfNeeded(buf);
|
||||
}
|
||||
@@ -923,65 +866,65 @@ class Recording {
|
||||
void recordExecutionSample(Buffer* buf, int tid, u32 call_trace_id, ExecutionEvent* event) {
|
||||
int start = buf->skip(1);
|
||||
buf->put8(T_EXECUTION_SAMPLE);
|
||||
buf->putVar64(OS::nanotime());
|
||||
buf->putVar32(tid);
|
||||
buf->putVar32(call_trace_id);
|
||||
buf->putVar32(event->_thread_state);
|
||||
buf->putVarint(OS::nanotime());
|
||||
buf->putVarint(tid);
|
||||
buf->putVarint(call_trace_id);
|
||||
buf->putVarint(event->_thread_state);
|
||||
buf->put8(start, buf->offset() - start);
|
||||
}
|
||||
|
||||
void recordAllocationInNewTLAB(Buffer* buf, int tid, u32 call_trace_id, AllocEvent* event) {
|
||||
int start = buf->skip(1);
|
||||
buf->put8(T_ALLOC_IN_NEW_TLAB);
|
||||
buf->putVar64(OS::nanotime());
|
||||
buf->putVar32(tid);
|
||||
buf->putVar32(call_trace_id);
|
||||
buf->putVar32(event->_class_id);
|
||||
buf->putVar64(event->_instance_size);
|
||||
buf->putVar64(event->_total_size);
|
||||
buf->putVarint(OS::nanotime());
|
||||
buf->putVarint(tid);
|
||||
buf->putVarint(call_trace_id);
|
||||
buf->putVarint(event->_class_id);
|
||||
buf->putVarint(event->_instance_size);
|
||||
buf->putVarint(event->_total_size);
|
||||
buf->put8(start, buf->offset() - start);
|
||||
}
|
||||
|
||||
void recordAllocationOutsideTLAB(Buffer* buf, int tid, u32 call_trace_id, AllocEvent* event) {
|
||||
int start = buf->skip(1);
|
||||
buf->put8(T_ALLOC_OUTSIDE_TLAB);
|
||||
buf->putVar64(OS::nanotime());
|
||||
buf->putVar32(tid);
|
||||
buf->putVar32(call_trace_id);
|
||||
buf->putVar32(event->_class_id);
|
||||
buf->putVar64(event->_total_size);
|
||||
buf->putVarint(OS::nanotime());
|
||||
buf->putVarint(tid);
|
||||
buf->putVarint(call_trace_id);
|
||||
buf->putVarint(event->_class_id);
|
||||
buf->putVarint(event->_total_size);
|
||||
buf->put8(start, buf->offset() - start);
|
||||
}
|
||||
|
||||
void recordMonitorBlocked(Buffer* buf, int tid, u32 call_trace_id, LockEvent* event) {
|
||||
int start = buf->skip(1);
|
||||
buf->put8(T_MONITOR_ENTER);
|
||||
buf->putVar64(event->_start_time);
|
||||
buf->putVar64(event->_end_time - event->_start_time);
|
||||
buf->putVar32(tid);
|
||||
buf->putVar32(call_trace_id);
|
||||
buf->putVar32(event->_class_id);
|
||||
buf->putVar64(event->_address);
|
||||
buf->putVarint(event->_start_time);
|
||||
buf->putVarint(event->_end_time - event->_start_time);
|
||||
buf->putVarint(tid);
|
||||
buf->putVarint(call_trace_id);
|
||||
buf->putVarint(event->_class_id);
|
||||
buf->putVarint(event->_address);
|
||||
buf->put8(start, buf->offset() - start);
|
||||
}
|
||||
|
||||
void recordThreadPark(Buffer* buf, int tid, u32 call_trace_id, LockEvent* event) {
|
||||
int start = buf->skip(1);
|
||||
buf->put8(T_THREAD_PARK);
|
||||
buf->putVar64(event->_start_time);
|
||||
buf->putVar64(event->_end_time - event->_start_time);
|
||||
buf->putVar32(tid);
|
||||
buf->putVar32(call_trace_id);
|
||||
buf->putVar32(event->_class_id);
|
||||
buf->putVar64(event->_timeout);
|
||||
buf->putVar64(event->_address);
|
||||
buf->putVarint(event->_start_time);
|
||||
buf->putVarint(event->_end_time - event->_start_time);
|
||||
buf->putVarint(tid);
|
||||
buf->putVarint(call_trace_id);
|
||||
buf->putVarint(event->_class_id);
|
||||
buf->putVarint(event->_timeout);
|
||||
buf->putVarint(event->_address);
|
||||
buf->put8(start, buf->offset() - start);
|
||||
}
|
||||
|
||||
void recordCpuLoad(Buffer* buf, float proc_user, float proc_system, float machine_total) {
|
||||
int start = buf->skip(1);
|
||||
buf->put8(T_CPU_LOAD);
|
||||
buf->putVar64(OS::nanotime());
|
||||
buf->putVarint(OS::nanotime());
|
||||
buf->putFloat(proc_user);
|
||||
buf->putFloat(proc_system);
|
||||
buf->putFloat(machine_total);
|
||||
@@ -996,7 +939,6 @@ class Recording {
|
||||
};
|
||||
|
||||
SpinLock Recording::_cpu_monitor_lock(1);
|
||||
int Recording::_append_fd = -1;
|
||||
|
||||
char* Recording::_agent_properties = NULL;
|
||||
char* Recording::_jvm_args = NULL;
|
||||
@@ -1009,17 +951,9 @@ Error FlightRecorder::start(Arguments& args, bool reset) {
|
||||
return Error("Flight Recorder output file is not specified");
|
||||
}
|
||||
|
||||
if (args.hasOption(JFR_SYNC) && !loadJavaHelper()) {
|
||||
return Error("Could not load JFR combiner class");
|
||||
}
|
||||
|
||||
int fd = open(args._file, O_CREAT | O_RDWR | (reset ? O_TRUNC : 0), 0644);
|
||||
int fd = open(args._file, O_CREAT | O_WRONLY | (reset ? O_TRUNC : 0), 0644);
|
||||
if (fd == -1) {
|
||||
return Error("Could not open Flight Recorder output file");
|
||||
}
|
||||
|
||||
if (args.hasOption(JFR_TEMP_FILE)) {
|
||||
unlink(args._file);
|
||||
return Error("Cannot open Flight Recorder output file");
|
||||
}
|
||||
|
||||
_rec = new Recording(fd, args);
|
||||
@@ -1033,29 +967,10 @@ void FlightRecorder::stop() {
|
||||
}
|
||||
}
|
||||
|
||||
bool FlightRecorder::loadJavaHelper() {
|
||||
if (!_java_helper_loaded) {
|
||||
JNIEnv* jni = VM::jni();
|
||||
const JNINativeMethod native_method = {
|
||||
(char*)"appendRecording", (char*)"(Ljava/lang/String;)V",
|
||||
(void*)Recording::appendRecording
|
||||
};
|
||||
|
||||
jclass cls = jni->DefineClass(NULL, NULL, (const jbyte*)JFR_COMBINER_CLASS, sizeof(JFR_COMBINER_CLASS));
|
||||
if (cls == NULL || jni->RegisterNatives(cls, &native_method, 1) != 0 || jni->GetMethodID(cls, "<init>", "()V") == NULL) {
|
||||
jni->ExceptionClear();
|
||||
return false;
|
||||
}
|
||||
|
||||
_java_helper_loaded = true;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// TODO: record events with call_trace_id == 0, and use stack allocated buffer if needed
|
||||
void FlightRecorder::recordEvent(int lock_index, int tid, u32 call_trace_id,
|
||||
int event_type, Event* event, u64 counter) {
|
||||
if (_rec != NULL) {
|
||||
if (_rec != NULL && call_trace_id != 0) {
|
||||
Buffer* buf = _rec->buffer(lock_index);
|
||||
switch (event_type) {
|
||||
case 0:
|
||||
|
||||
@@ -26,12 +26,9 @@ class Recording;
|
||||
class FlightRecorder {
|
||||
private:
|
||||
Recording* _rec;
|
||||
bool _java_helper_loaded;
|
||||
|
||||
bool loadJavaHelper();
|
||||
|
||||
public:
|
||||
FlightRecorder() : _rec(NULL), _java_helper_loaded(false) {
|
||||
FlightRecorder() : _rec(NULL) {
|
||||
}
|
||||
|
||||
Error start(Arguments& args, bool reset);
|
||||
|
||||
@@ -1 +0,0 @@
|
||||
202,254,186,190,0,0,0,50,0,11,10,0,3,0,8,7,0,9,7,0,10,1,0,6,60,105,110,105,116,62,1,0,3,40,41,86,1,0,4,67,111,100,101,1,0,12,114,101,99,111,114,100,83,97,109,112,108,101,12,0,4,0,5,1,0,23,111,110,101,47,112,114,111,102,105,108,101,114,47,73,110,115,116,114,117,109,101,110,116,1,0,16,106,97,118,97,47,108,97,110,103,47,79,98,106,101,99,116,0,33,0,2,0,3,0,0,0,0,0,2,0,2,0,4,0,5,0,1,0,6,0,0,0,17,0,1,0,1,0,0,0,5,42,183,0,1,177,0,0,0,0,1,9,0,7,0,5,0,0,0,0,
|
||||
@@ -1,28 +0,0 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package one.profiler;
|
||||
|
||||
/**
|
||||
* Instrumentation helper for Java method profiling.
|
||||
*/
|
||||
public class Instrument {
|
||||
|
||||
private Instrument() {
|
||||
}
|
||||
|
||||
public static native void recordSample();
|
||||
}
|
||||
@@ -1 +0,0 @@
|
||||
202,254,186,190,0,0,0,50,0,91,10,0,22,0,35,10,0,18,0,36,9,0,37,0,38,10,0,18,0,39,11,0,40,0,41,10,0,19,0,42,9,0,37,0,43,10,0,19,0,44,8,0,45,10,0,18,0,46,8,0,47,10,0,48,0,49,10,0,48,0,50,10,0,48,0,51,11,0,52,0,53,11,0,54,0,55,11,0,54,0,56,7,0,57,7,0,58,10,0,19,0,35,10,0,48,0,59,7,0,60,7,0,61,1,0,6,60,105,110,105,116,62,1,0,3,40,41,86,1,0,4,67,111,100,101,1,0,21,114,101,99,111,114,100,105,110,103,83,116,97,116,101,67,104,97,110,103,101,100,1,0,22,40,76,106,100,107,47,106,102,114,47,82,101,99,111,114,100,105,110,103,59,41,86,1,0,13,83,116,97,99,107,77,97,112,84,97,98,108,101,1,0,20,100,105,115,97,98,108,101,66,117,105,108,116,105,110,69,118,101,110,116,115,1,0,15,97,112,112,101,110,100,82,101,99,111,114,100,105,110,103,1,0,21,40,76,106,97,118,97,47,108,97,110,103,47,83,116,114,105,110,103,59,41,86,1,0,8,60,99,108,105,110,105,116,62,7,0,62,12,0,24,0,25,12,0,63,0,64,7,0,65,12,0,66,0,67,12,0,68,0,69,7,0,70,12,0,71,0,72,12,0,31,0,32,12,0,73,0,67,12,0,30,0,28,1,0,19,106,100,107,46,69,120,101,99,117,116,105,111,110,83,97,109,112,108,101,12,0,74,0,75,1,0,22,106,100,107,46,78,97,116,105,118,101,77,101,116,104,111,100,83,97,109,112,108,101,7,0,76,12,0,77,0,78,12,0,79,0,80,12,0,81,0,82,7,0,83,12,0,84,0,85,7,0,62,12,0,86,0,78,12,0,87,0,88,1,0,17,106,100,107,47,106,102,114,47,82,101,99,111,114,100,105,110,103,1,0,24,111,110,101,47,112,114,111,102,105,108,101,114,47,74,102,114,67,111,109,98,105,110,101,114,12,0,89,0,90,1,0,16,106,97,118,97,47,108,97,110,103,47,79,98,106,101,99,116,1,0,30,106,100,107,47,106,102,114,47,70,108,105,103,104,116,82,101,99,111,114,100,101,114,76,105,115,116,101,110,101,114,1,0,18,106,97,118,97,47,117,116,105,108,47,73,116,101,114,97,116,111,114,1,0,8,103,101,116,83,116,97,116,101,1,0,26,40,41,76,106,100,107,47,106,102,114,47,82,101,99,111,114,100,105,110,103,83,116,97,116,101,59,1,0,22,106,100,107,47,106,102,114,47,82,101,99,111,114,100,105,110,103,83,116,97,116,101,1,0,7,83,84,79,80,80,69,68,1,0,24,76,106,100,107,47,106,102,114,47,82,101,99,111,114,100,105,110,103,83,116,97,116,101,59,1,0,14,103,101,116,68,101,115,116,105,110,97,116,105,111,110,1,0,22,40,41,76,106,97,118,97,47,110,105,111,47,102,105,108,101,47,80,97,116,104,59,1,0,18,106,97,118,97,47,110,105,111,47,102,105,108,101,47,80,97,116,104,1,0,8,116,111,83,116,114,105,110,103,1,0,20,40,41,76,106,97,118,97,47,108,97,110,103,47,83,116,114,105,110,103,59,1,0,6,67,76,79,83,69,68,1,0,7,100,105,115,97,98,108,101,1,0,43,40,76,106,97,118,97,47,108,97,110,103,47,83,116,114,105,110,103,59,41,76,106,100,107,47,106,102,114,47,69,118,101,110,116,83,101,116,116,105,110,103,115,59,1,0,22,106,100,107,47,106,102,114,47,70,108,105,103,104,116,82,101,99,111,114,100,101,114,1,0,13,105,115,73,110,105,116,105,97,108,105,122,101,100,1,0,3,40,41,90,1,0,17,103,101,116,70,108,105,103,104,116,82,101,99,111,114,100,101,114,1,0,26,40,41,76,106,100,107,47,106,102,114,47,70,108,105,103,104,116,82,101,99,111,114,100,101,114,59,1,0,13,103,101,116,82,101,99,111,114,100,105,110,103,115,1,0,18,40,41,76,106,97,118,97,47,117,116,105,108,47,76,105,115,116,59,1,0,14,106,97,118,97,47,117,116,105,108,47,76,105,115,116,1,0,8,105,116,101,114,97,116,111,114,1,0,22,40,41,76,106,97,118,97,47,117,116,105,108,47,73,116,101,114,97,116,111,114,59,1,0,7,104,97,115,78,101,120,116,1,0,4,110,101,120,116,1,0,20,40,41,76,106,97,118,97,47,108,97,110,103,47,79,98,106,101,99,116,59,1,0,11,97,100,100,76,105,115,116,101,110,101,114,1,0,35,40,76,106,100,107,47,106,102,114,47,70,108,105,103,104,116,82,101,99,111,114,100,101,114,76,105,115,116,101,110,101,114,59,41,86,0,32,0,19,0,22,0,1,0,23,0,0,0,5,0,2,0,24,0,25,0,1,0,26,0,0,0,17,0,1,0,1,0,0,0,5,42,183,0,1,177,0,0,0,0,0,1,0,27,0,28,0,1,0,26,0,0,0,69,0,2,0,3,0,0,0,46,43,182,0,2,178,0,3,166,0,24,43,182,0,4,77,44,198,0,12,44,185,0,5,1,0,184,0,6,167,0,17,43,182,0,2,178,0,7,165,0,7,43,184,0,8,177,0,0,0,1,0,29,0,0,0,5,0,3,28,2,13,0,10,0,30,0,28,0,1,0,26,0,0,0,27,0,2,0,1,0,0,0,15,42,18,9,182,0,10,87,42,18,11,182,0,10,87,177,0,0,0,0,1,10,0,31,0,32,0,0,0,8,0,33,0,25,0,1,0,26,0,0,0,84,0,2,0,2,0,0,0,55,184,0,12,153,0,41,184,0,13,182,0,14,185,0,15,1,0,75,42,185,0,16,1,0,153,0,20,42,185,0,17,1,0,192,0,18,76,43,184,0,8,167,255,233,187,0,19,89,183,0,20,184,0,21,177,0,0,0,1,0,29,0,0,0,11,0,2,252,0,18,7,0,34,250,0,25,0,0,
|
||||
@@ -1,62 +0,0 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package one.profiler;
|
||||
|
||||
import jdk.jfr.FlightRecorder;
|
||||
import jdk.jfr.FlightRecorderListener;
|
||||
import jdk.jfr.Recording;
|
||||
import jdk.jfr.RecordingState;
|
||||
|
||||
import java.nio.file.Path;
|
||||
|
||||
/**
|
||||
* Appends async-profiler recording to an existing JFR recording.
|
||||
*/
|
||||
class JfrCombiner implements FlightRecorderListener {
|
||||
|
||||
private JfrCombiner() {
|
||||
}
|
||||
|
||||
@Override
|
||||
public void recordingStateChanged(Recording recording) {
|
||||
if (recording.getState() == RecordingState.STOPPED) {
|
||||
Path path = recording.getDestination();
|
||||
if (path != null) {
|
||||
appendRecording(path.toString());
|
||||
}
|
||||
} else if (recording.getState() != RecordingState.CLOSED) {
|
||||
disableBuiltinEvents(recording);
|
||||
}
|
||||
}
|
||||
|
||||
private static void disableBuiltinEvents(Recording recording) {
|
||||
recording.disable("jdk.ExecutionSample");
|
||||
recording.disable("jdk.NativeMethodSample");
|
||||
}
|
||||
|
||||
private static native void appendRecording(String path);
|
||||
|
||||
static {
|
||||
if (FlightRecorder.isInitialized()) {
|
||||
for (Recording recording : FlightRecorder.getFlightRecorder().getRecordings()) {
|
||||
disableBuiltinEvents(recording);
|
||||
}
|
||||
}
|
||||
|
||||
FlightRecorder.addListener(new JfrCombiner());
|
||||
}
|
||||
}
|
||||
@@ -24,9 +24,28 @@
|
||||
#include "instrument.h"
|
||||
|
||||
|
||||
static const unsigned char INSTRUMENT_CLASS[] = {
|
||||
#include "helper/one/profiler/Instrument.class.h"
|
||||
};
|
||||
// A class with a single native recordSample() method
|
||||
static const char INSTRUMENT_CLASS[] =
|
||||
"\xCA\xFE\xBA\xBE" // magic
|
||||
"\x00\x00\x00\x32" // version: 50
|
||||
"\x00\x07" // constant_pool_count: 7
|
||||
"\x07\x00\x02" // #1 = CONSTANT_Class: #2
|
||||
"\x01\x00\x17one/profiler/Instrument" // #2 = CONSTANT_Utf8: "one/profiler/Instrument"
|
||||
"\x07\x00\x04" // #3 = CONSTANT_Class: #4
|
||||
"\x01\x00\x10java/lang/Object" // #4 = CONSTANT_Utf8: "java/lang/Object"
|
||||
"\x01\x00\x0CrecordSample" // #5 = CONSTANT_Utf8: "recordSample"
|
||||
"\x01\x00\x03()V" // #6 = CONSTANT_Utf8: "()V"
|
||||
"\x00\x21" // access_flags: public super
|
||||
"\x00\x01" // this_class: #1
|
||||
"\x00\x03" // super_class: #3
|
||||
"\x00\x00" // interfaces_count: 0
|
||||
"\x00\x00" // fields_count: 0
|
||||
"\x00\x01" // methods_count: 1
|
||||
"\x01\x09" // access_flags: public static native
|
||||
"\x00\x05" // name_index: #5
|
||||
"\x00\x06" // descriptor_index: #6
|
||||
"\x00\x00" // attributes_count: 0
|
||||
"\x00"; // attributes_count: 0
|
||||
|
||||
|
||||
enum ConstantTag {
|
||||
@@ -490,7 +509,7 @@ Error Instrument::start(Arguments& args) {
|
||||
return Error("interval must be positive");
|
||||
}
|
||||
|
||||
setupTargetClassAndMethod(args._event);
|
||||
setupTargetClassAndMethod(args._event_desc);
|
||||
_interval = args._interval ? args._interval : 1;
|
||||
_calls = 0;
|
||||
_running = true;
|
||||
|
||||
@@ -30,14 +30,18 @@ class Instrument : public Engine {
|
||||
static volatile bool _running;
|
||||
|
||||
public:
|
||||
const char* title() {
|
||||
return "Java method profile";
|
||||
const char* name() {
|
||||
return "instrument";
|
||||
}
|
||||
|
||||
const char* units() {
|
||||
return "calls";
|
||||
}
|
||||
|
||||
CStack cstack() {
|
||||
return CSTACK_NO;
|
||||
}
|
||||
|
||||
Error check(Arguments& args);
|
||||
Error start(Arguments& args);
|
||||
void stop();
|
||||
|
||||
@@ -52,8 +52,8 @@ Error ITimer::start(Arguments& args) {
|
||||
|
||||
OS::installSignalHandler(SIGPROF, signalHandler);
|
||||
|
||||
time_t sec = _interval / 1000000000;
|
||||
suseconds_t usec = (_interval % 1000000000) / 1000;
|
||||
long sec = _interval / 1000000000;
|
||||
long usec = (_interval % 1000000000) / 1000;
|
||||
struct itimerval tv = {{sec, usec}, {sec, usec}};
|
||||
|
||||
if (setitimer(ITIMER_PROF, &tv, NULL) != 0) {
|
||||
|
||||
@@ -28,8 +28,8 @@ class ITimer : public Engine {
|
||||
static void signalHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
|
||||
public:
|
||||
const char* title() {
|
||||
return "CPU profile";
|
||||
const char* name() {
|
||||
return "itimer";
|
||||
}
|
||||
|
||||
const char* units() {
|
||||
|
||||
@@ -268,7 +268,7 @@ static int check_file_owner(const char* path) {
|
||||
static int start_attach_mechanism(int pid, int nspid) {
|
||||
char path[MAX_PATH];
|
||||
snprintf(path, sizeof(path), "/proc/%d/cwd/.attach_pid%d", nspid, nspid);
|
||||
|
||||
|
||||
int fd = creat(path, 0660);
|
||||
if (fd == -1 || (close(fd) == 0 && !check_file_owner(path))) {
|
||||
// Failed to create attach trigger in current directory. Retry in /tmp
|
||||
@@ -279,10 +279,10 @@ static int start_attach_mechanism(int pid, int nspid) {
|
||||
}
|
||||
close(fd);
|
||||
}
|
||||
|
||||
|
||||
// We have to still use the host namespace pid here for the kill() call
|
||||
kill(pid, SIGQUIT);
|
||||
|
||||
|
||||
// Start with 20 ms sleep and increment delay each iteration
|
||||
struct timespec ts = {0, 20000000};
|
||||
int result;
|
||||
@@ -301,7 +301,7 @@ static int connect_socket(int pid) {
|
||||
if (fd == -1) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
struct sockaddr_un addr;
|
||||
addr.sun_family = AF_UNIX;
|
||||
int bytes = snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/.java_pid%d", tmp_path, pid);
|
||||
@@ -334,7 +334,7 @@ static int write_command(int fd, int argc, char** argv) {
|
||||
}
|
||||
|
||||
// Mirror response from remote JVM to stdout
|
||||
static int read_response(int fd, int argc, char** argv) {
|
||||
static int read_response(int fd) {
|
||||
char buf[8192];
|
||||
ssize_t bytes = read(fd, buf, sizeof(buf) - 1);
|
||||
if (bytes <= 0) {
|
||||
@@ -346,26 +346,10 @@ static int read_response(int fd, int argc, char** argv) {
|
||||
buf[bytes] = 0;
|
||||
int result = atoi(buf);
|
||||
|
||||
// Special treatment of 'load' command
|
||||
if (result == 0 && argc > 0 && strcmp(argv[0], "load") == 0) {
|
||||
size_t total = bytes;
|
||||
while (total < sizeof(buf) - 1 && (bytes = read(fd, buf + total, sizeof(buf) - 1 - total)) > 0) {
|
||||
total += (size_t)bytes;
|
||||
}
|
||||
bytes = total;
|
||||
|
||||
// The second line is the result of 'load' command; since JDK 9 it starts from "return code: "
|
||||
buf[bytes] = 0;
|
||||
result = atoi(strncmp(buf + 2, "return code: ", 13) == 0 ? buf + 15 : buf + 2);
|
||||
}
|
||||
|
||||
// Mirror JVM response to stdout
|
||||
printf("JVM response code = ");
|
||||
do {
|
||||
fwrite(buf, 1, bytes, stdout);
|
||||
bytes = read(fd, buf, sizeof(buf));
|
||||
} while (bytes > 0);
|
||||
printf("\n");
|
||||
|
||||
return result;
|
||||
}
|
||||
@@ -373,12 +357,12 @@ static int read_response(int fd, int argc, char** argv) {
|
||||
int main(int argc, char** argv) {
|
||||
if (argc < 3) {
|
||||
printf("jattach " JATTACH_VERSION " built on " __DATE__ "\n"
|
||||
"Copyright 2021 Andrei Pangin\n"
|
||||
"Copyright 2018 Andrei Pangin\n"
|
||||
"\n"
|
||||
"Usage: jattach <pid> <cmd> [args ...]\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
int pid = atoi(argv[1]);
|
||||
if (pid == 0) {
|
||||
perror("Invalid pid provided");
|
||||
@@ -434,7 +418,7 @@ int main(int argc, char** argv) {
|
||||
perror("Could not connect to socket");
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
printf("Connected to remote JVM\n");
|
||||
if (!write_command(fd, argc - 2, argv + 2)) {
|
||||
perror("Error writing to socket");
|
||||
@@ -442,7 +426,11 @@ int main(int argc, char** argv) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
int result = read_response(fd, argc - 2, argv + 2);
|
||||
printf("Response code = ");
|
||||
fflush(stdout);
|
||||
|
||||
int result = read_response(fd);
|
||||
printf("\n");
|
||||
close(fd);
|
||||
|
||||
return result;
|
||||
|
||||
@@ -29,15 +29,8 @@ extern "C" JNIEXPORT void JNICALL
|
||||
Java_one_profiler_AsyncProfiler_start0(JNIEnv* env, jobject unused, jstring event, jlong interval, jboolean reset) {
|
||||
Arguments args;
|
||||
const char* event_str = env->GetStringUTFChars(event, NULL);
|
||||
if (strcmp(event_str, EVENT_ALLOC) == 0) {
|
||||
args._alloc = interval > 0 ? interval : 1;
|
||||
} else if (strcmp(event_str, EVENT_LOCK) == 0) {
|
||||
args._lock = interval > 0 ? interval : 1;
|
||||
} else {
|
||||
args._event = event_str;
|
||||
args._interval = interval;
|
||||
}
|
||||
|
||||
args.addEvent(event_str);
|
||||
args._interval = interval;
|
||||
Error error = Profiler::_instance.start(args, reset);
|
||||
env->ReleaseStringUTFChars(event, event_str);
|
||||
|
||||
@@ -67,27 +60,21 @@ Java_one_profiler_AsyncProfiler_execute0(JNIEnv* env, jobject unused, jstring co
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (!args.hasOutputFile()) {
|
||||
if (args._file == NULL || args._output == OUTPUT_JFR) {
|
||||
std::ostringstream out;
|
||||
error = Profiler::_instance.runInternal(args, out);
|
||||
if (!error) {
|
||||
return env->NewStringUTF(out.str().c_str());
|
||||
}
|
||||
Profiler::_instance.runInternal(args, out);
|
||||
return env->NewStringUTF(out.str().c_str());
|
||||
} else {
|
||||
std::ofstream out(args._file, std::ios::out | std::ios::trunc);
|
||||
if (!out.is_open()) {
|
||||
if (out.is_open()) {
|
||||
Profiler::_instance.runInternal(args, out);
|
||||
out.close();
|
||||
return env->NewStringUTF("OK");
|
||||
} else {
|
||||
JavaAPI::throwNew(env, "java/io/IOException", strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
error = Profiler::_instance.runInternal(args, out);
|
||||
out.close();
|
||||
if (!error) {
|
||||
return env->NewStringUTF("OK");
|
||||
}
|
||||
}
|
||||
|
||||
JavaAPI::throwNew(env, "java/lang/IllegalStateException", error.message());
|
||||
return NULL;
|
||||
}
|
||||
|
||||
extern "C" JNIEXPORT jlong JNICALL
|
||||
|
||||
71
src/jstack.cpp
Normal file
71
src/jstack.cpp
Normal file
@@ -0,0 +1,71 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include <signal.h>
|
||||
#include <time.h>
|
||||
#include "jstack.h"
|
||||
#include "profiler.h"
|
||||
|
||||
|
||||
// Wait at most this number of milliseconds to finish processing of pending signals
|
||||
const int MAX_WAIT_MILLIS = 2000;
|
||||
|
||||
|
||||
void JStack::signalHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
ExecutionEvent event;
|
||||
event._thread_state = Profiler::_instance.getThreadState(ucontext);
|
||||
Profiler::_instance.recordSample(ucontext, 1, 0, &event);
|
||||
}
|
||||
|
||||
Error JStack::start(Arguments& args) {
|
||||
OS::installSignalHandler(SIGVTALRM, signalHandler);
|
||||
|
||||
int self = OS::threadId();
|
||||
u64 required_samples = Profiler::_instance.total_samples();
|
||||
ThreadFilter* thread_filter = Profiler::_instance.threadFilter();
|
||||
bool thread_filter_enabled = thread_filter->enabled();
|
||||
|
||||
ThreadList* thread_list = OS::listThreads();
|
||||
int thread_id;
|
||||
while ((thread_id = thread_list->next()) != -1) {
|
||||
if (thread_id != self && (!thread_filter_enabled || thread_filter->accept(thread_id))) {
|
||||
if (OS::sendSignalToThread(thread_id, SIGVTALRM)) {
|
||||
required_samples++;
|
||||
}
|
||||
}
|
||||
}
|
||||
delete thread_list;
|
||||
|
||||
// Get our own stack trace after all other threads
|
||||
if (!thread_filter_enabled || thread_filter->accept(self)) {
|
||||
ExecutionEvent event;
|
||||
event._thread_state = THREAD_RUNNING;
|
||||
Profiler::_instance.recordSample(NULL, 1, 0, &event);
|
||||
required_samples++;
|
||||
}
|
||||
|
||||
// Wait until all asynchronous stack traces collected
|
||||
for (int i = 0; Profiler::_instance.total_samples() < required_samples && i < MAX_WAIT_MILLIS; i++) {
|
||||
struct timespec timeout = {0, 1000000};
|
||||
nanosleep(&timeout, NULL);
|
||||
}
|
||||
|
||||
return Error::OK;
|
||||
}
|
||||
|
||||
void JStack::stop() {
|
||||
// Nothing to do
|
||||
}
|
||||
@@ -14,26 +14,28 @@
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#ifndef _LOG_H
|
||||
#define _LOG_H
|
||||
#ifndef _JSTACK_H
|
||||
#define _JSTACK_H
|
||||
|
||||
#include <stdarg.h>
|
||||
#include <stdio.h>
|
||||
#include <signal.h>
|
||||
#include "engine.h"
|
||||
|
||||
|
||||
class Log {
|
||||
class JStack : public Engine {
|
||||
private:
|
||||
static FILE* _file;
|
||||
|
||||
static void log(const char* level, const char* msg, va_list args);
|
||||
static void signalHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
|
||||
public:
|
||||
static void open(const char* file_name);
|
||||
static void close();
|
||||
const char* name() {
|
||||
return EVENT_JSTACK;
|
||||
}
|
||||
|
||||
static void info(const char* msg, ...);
|
||||
static void warn(const char* msg, ...);
|
||||
static void error(const char* msg, ...);
|
||||
const char* units() {
|
||||
return "samples";
|
||||
}
|
||||
|
||||
Error start(Arguments& args);
|
||||
void stop();
|
||||
};
|
||||
|
||||
#endif // _LOG_H
|
||||
#endif // _JSTACK_H
|
||||
@@ -21,14 +21,11 @@
|
||||
#include "vmStructs.h"
|
||||
|
||||
|
||||
jlong LockTracer::_threshold;
|
||||
jlong LockTracer::_start_time = 0;
|
||||
jclass LockTracer::_LockSupport = NULL;
|
||||
jmethodID LockTracer::_getBlocker = NULL;
|
||||
|
||||
Error LockTracer::start(Arguments& args) {
|
||||
_threshold = args._lock;
|
||||
|
||||
// Enable Java Monitor events
|
||||
jvmtiEnv* jvmti = VM::jvmti();
|
||||
jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_MONITOR_CONTENDED_ENTER, NULL);
|
||||
@@ -41,7 +38,7 @@ Error LockTracer::start(Arguments& args) {
|
||||
_getBlocker = env->GetStaticMethodID(_LockSupport, "getBlocker", "(Ljava/lang/Thread;)Ljava/lang/Object;");
|
||||
}
|
||||
|
||||
// Intercept Unsafe.park() for tracing contended ReentrantLocks
|
||||
// Intercent Unsafe.park() for tracing contended ReentrantLocks
|
||||
if (VMStructs::_unsafe_park != NULL) {
|
||||
bindUnsafePark(UnsafeParkTrap);
|
||||
}
|
||||
@@ -72,7 +69,7 @@ void JNICALL LockTracer::MonitorContendedEntered(jvmtiEnv* jvmti, JNIEnv* env, j
|
||||
jvmti->GetTag(thread, &enter_time);
|
||||
|
||||
// Time is meaningless if lock attempt has started before profiling
|
||||
if (_enabled && entered_time - enter_time >= _threshold && enter_time >= _start_time) {
|
||||
if (_enabled && enter_time >= _start_time) {
|
||||
char* lock_name = getLockName(jvmti, env, object);
|
||||
recordContendedLock(BCI_LOCK, enter_time, entered_time, lock_name, object, 0);
|
||||
jvmti->Deallocate((unsigned char*)lock_name);
|
||||
@@ -92,13 +89,12 @@ void JNICALL LockTracer::UnsafeParkTrap(JNIEnv* env, jobject instance, jboolean
|
||||
|
||||
if (park_blocker != NULL) {
|
||||
park_end_time = OS::nanotime();
|
||||
if (park_end_time - park_start_time >= _threshold) {
|
||||
char* lock_name = getLockName(jvmti, env, park_blocker);
|
||||
if (lock_name == NULL || isConcurrentLock(lock_name)) {
|
||||
recordContendedLock(BCI_PARK, park_start_time, park_end_time, lock_name, park_blocker, time);
|
||||
}
|
||||
jvmti->Deallocate((unsigned char*)lock_name);
|
||||
|
||||
char* lock_name = getLockName(jvmti, env, park_blocker);
|
||||
if (lock_name == NULL || isConcurrentLock(lock_name)) {
|
||||
recordContendedLock(BCI_PARK, park_start_time, park_end_time, lock_name, park_blocker, time);
|
||||
}
|
||||
jvmti->Deallocate((unsigned char*)lock_name);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@@ -26,7 +26,6 @@ typedef void (JNICALL *UnsafeParkFunc)(JNIEnv*, jobject, jboolean, jlong);
|
||||
|
||||
class LockTracer : public Engine {
|
||||
private:
|
||||
static jlong _threshold;
|
||||
static jlong _start_time;
|
||||
static jclass _LockSupport;
|
||||
static jmethodID _getBlocker;
|
||||
@@ -39,14 +38,18 @@ class LockTracer : public Engine {
|
||||
static void bindUnsafePark(UnsafeParkFunc entry);
|
||||
|
||||
public:
|
||||
const char* title() {
|
||||
return "Lock profile";
|
||||
const char* name() {
|
||||
return "lock";
|
||||
}
|
||||
|
||||
const char* units() {
|
||||
return "ns";
|
||||
}
|
||||
|
||||
CStack cstack() {
|
||||
return CSTACK_NO;
|
||||
}
|
||||
|
||||
Error start(Arguments& args);
|
||||
void stop();
|
||||
|
||||
|
||||
72
src/log.cpp
72
src/log.cpp
@@ -1,72 +0,0 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
#include "log.h"
|
||||
|
||||
|
||||
FILE* Log::_file = stdout;
|
||||
|
||||
|
||||
void Log::open(const char* file_name) {
|
||||
if (_file != stdout && _file != stderr) {
|
||||
fclose(_file);
|
||||
}
|
||||
|
||||
if (file_name == NULL || strcmp(file_name, "stdout") == 0) {
|
||||
_file = stdout;
|
||||
} else if (strcmp(file_name, "stderr") == 0) {
|
||||
_file = stderr;
|
||||
} else if ((_file = fopen(file_name, "w")) == NULL) {
|
||||
_file = stdout;
|
||||
warn("Could not open log file: %s", file_name);
|
||||
}
|
||||
}
|
||||
|
||||
void Log::close() {
|
||||
if (_file != stdout && _file != stderr) {
|
||||
fclose(_file);
|
||||
_file = stdout;
|
||||
}
|
||||
}
|
||||
|
||||
inline void Log::log(const char* level, const char* msg, va_list args) {
|
||||
fputs(level, _file);
|
||||
vfprintf(_file, msg, args);
|
||||
fputs("\n", _file);
|
||||
fflush(_file);
|
||||
}
|
||||
|
||||
void Log::info(const char* msg, ...) {
|
||||
va_list args;
|
||||
va_start(args, msg);
|
||||
log("[INFO] ", msg, args);
|
||||
va_end(args);
|
||||
}
|
||||
|
||||
void Log::warn(const char* msg, ...) {
|
||||
va_list args;
|
||||
va_start(args, msg);
|
||||
log("[WARN] ", msg, args);
|
||||
va_end(args);
|
||||
}
|
||||
|
||||
void Log::error(const char* msg, ...) {
|
||||
va_list args;
|
||||
va_start(args, msg);
|
||||
log("[ERROR] ", msg, args);
|
||||
va_end(args);
|
||||
}
|
||||
29
src/os.h
29
src/os.h
@@ -19,14 +19,9 @@
|
||||
|
||||
#include <signal.h>
|
||||
#include <stddef.h>
|
||||
#include <sys/types.h>
|
||||
#include "arch.h"
|
||||
|
||||
|
||||
typedef void (*SigAction)(int, siginfo_t*, void*);
|
||||
typedef void (*SigHandler)(int);
|
||||
typedef void (*TimerCallback)(void*);
|
||||
|
||||
enum ThreadState {
|
||||
THREAD_INVALID,
|
||||
THREAD_RUNNING,
|
||||
@@ -47,23 +42,13 @@ class ThreadList {
|
||||
};
|
||||
|
||||
|
||||
// W^X memory support
|
||||
class JitWriteProtection {
|
||||
private:
|
||||
u64 _prev;
|
||||
bool _restore;
|
||||
|
||||
public:
|
||||
JitWriteProtection(bool enable);
|
||||
~JitWriteProtection();
|
||||
};
|
||||
|
||||
|
||||
class OS {
|
||||
public:
|
||||
static const size_t page_size;
|
||||
static const size_t page_mask;
|
||||
private:
|
||||
typedef void (*SigAction)(int, siginfo_t*, void*);
|
||||
typedef void (*SigHandler)(int);
|
||||
typedef void (*TimerCallback)(void*);
|
||||
|
||||
public:
|
||||
static u64 nanotime();
|
||||
static u64 millis();
|
||||
static u64 processStartTime();
|
||||
@@ -80,7 +65,7 @@ class OS {
|
||||
|
||||
static bool isJavaLibraryVisible();
|
||||
|
||||
static SigAction installSignalHandler(int signo, SigAction action, SigHandler handler = NULL);
|
||||
static void installSignalHandler(int signo, SigAction action, SigHandler handler = NULL);
|
||||
static bool sendSignalToThread(int thread_id, int signo);
|
||||
|
||||
static void* safeAlloc(size_t size);
|
||||
@@ -92,8 +77,6 @@ class OS {
|
||||
static bool getCpuDescription(char* buf, size_t size);
|
||||
static u64 getProcessCpuTime(u64* utime, u64* stime);
|
||||
static u64 getTotalCpuTime(u64* utime, u64* stime);
|
||||
|
||||
static void copyFile(int src_fd, int dst_fd, off_t offset, size_t size);
|
||||
};
|
||||
|
||||
#endif // _OS_H
|
||||
|
||||
@@ -24,7 +24,6 @@
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <sys/mman.h>
|
||||
#include <sys/sendfile.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/syscall.h>
|
||||
#include <sys/time.h>
|
||||
@@ -108,18 +107,6 @@ class LinuxThreadList : public ThreadList {
|
||||
};
|
||||
|
||||
|
||||
JitWriteProtection::JitWriteProtection(bool enable) {
|
||||
// Not used on Linux
|
||||
}
|
||||
|
||||
JitWriteProtection::~JitWriteProtection() {
|
||||
// Not used on Linux
|
||||
}
|
||||
|
||||
|
||||
const size_t OS::page_size = sysconf(_SC_PAGESIZE);
|
||||
const size_t OS::page_mask = OS::page_size - 1;
|
||||
|
||||
u64 OS::nanotime() {
|
||||
struct timespec tp;
|
||||
clock_gettime(CLOCK_MONOTONIC, &tp);
|
||||
@@ -221,9 +208,8 @@ bool OS::isJavaLibraryVisible() {
|
||||
return false;
|
||||
}
|
||||
|
||||
SigAction OS::installSignalHandler(int signo, SigAction action, SigHandler handler) {
|
||||
void OS::installSignalHandler(int signo, SigAction action, SigHandler handler) {
|
||||
struct sigaction sa;
|
||||
struct sigaction oldsa;
|
||||
sigemptyset(&sa.sa_mask);
|
||||
|
||||
if (handler != NULL) {
|
||||
@@ -234,8 +220,7 @@ SigAction OS::installSignalHandler(int signo, SigAction action, SigHandler handl
|
||||
sa.sa_flags = SA_SIGINFO | SA_RESTART;
|
||||
}
|
||||
|
||||
sigaction(signo, &sa, &oldsa);
|
||||
return oldsa.sa_sigaction;
|
||||
sigaction(signo, &sa, NULL);
|
||||
}
|
||||
|
||||
bool OS::sendSignalToThread(int thread_id, int signo) {
|
||||
@@ -331,15 +316,4 @@ u64 OS::getTotalCpuTime(u64* utime, u64* stime) {
|
||||
return real;
|
||||
}
|
||||
|
||||
void OS::copyFile(int src_fd, int dst_fd, off_t offset, size_t size) {
|
||||
// copy_file_range() is probably better, but not supported on all kernels
|
||||
while (size > 0) {
|
||||
ssize_t bytes = sendfile(dst_fd, src_fd, &offset, size);
|
||||
if (bytes <= 0) {
|
||||
break;
|
||||
}
|
||||
size -= (size_t)bytes;
|
||||
}
|
||||
}
|
||||
|
||||
#endif // __linux__
|
||||
|
||||
@@ -28,7 +28,6 @@
|
||||
#include <sys/sysctl.h>
|
||||
#include <sys/time.h>
|
||||
#include <sys/times.h>
|
||||
#include <unistd.h>
|
||||
#include "os.h"
|
||||
|
||||
|
||||
@@ -82,39 +81,6 @@ class MacThreadList : public ThreadList {
|
||||
};
|
||||
|
||||
|
||||
JitWriteProtection::JitWriteProtection(bool enable) {
|
||||
#ifdef __aarch64__
|
||||
// Mimic pthread_jit_write_protect_np(), but save the previous state
|
||||
u64 val = enable ? *(volatile u64*)0xfffffc118 : *(volatile u64*)0xfffffc110;
|
||||
u64 prev;
|
||||
asm volatile("mrs %0, s3_6_c15_c1_5" : "=r" (prev) : : );
|
||||
if (prev != val) {
|
||||
_prev = prev;
|
||||
_restore = true;
|
||||
asm volatile("msr s3_6_c15_c1_5, %0\n"
|
||||
"isb"
|
||||
: "+r" (val) : : "memory");
|
||||
} else {
|
||||
_restore = false;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
JitWriteProtection::~JitWriteProtection() {
|
||||
#ifdef __aarch64__
|
||||
if (_restore) {
|
||||
u64 prev = _prev;
|
||||
asm volatile("msr s3_6_c15_c1_5, %0\n"
|
||||
"isb"
|
||||
: "+r" (prev) : : "memory");
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
const size_t OS::page_size = sysconf(_SC_PAGESIZE);
|
||||
const size_t OS::page_mask = OS::page_size - 1;
|
||||
|
||||
static mach_timebase_info_data_t timebase = {0, 0};
|
||||
|
||||
u64 OS::nanotime() {
|
||||
@@ -191,9 +157,8 @@ bool OS::isJavaLibraryVisible() {
|
||||
return true;
|
||||
}
|
||||
|
||||
SigAction OS::installSignalHandler(int signo, SigAction action, SigHandler handler) {
|
||||
void OS::installSignalHandler(int signo, SigAction action, SigHandler handler) {
|
||||
struct sigaction sa;
|
||||
struct sigaction oldsa;
|
||||
sigemptyset(&sa.sa_mask);
|
||||
|
||||
if (handler != NULL) {
|
||||
@@ -204,28 +169,16 @@ SigAction OS::installSignalHandler(int signo, SigAction action, SigHandler handl
|
||||
sa.sa_flags = SA_SIGINFO | SA_RESTART;
|
||||
}
|
||||
|
||||
sigaction(signo, &sa, &oldsa);
|
||||
return oldsa.sa_sigaction;
|
||||
sigaction(signo, &sa, NULL);
|
||||
}
|
||||
|
||||
bool OS::sendSignalToThread(int thread_id, int signo) {
|
||||
#ifdef __aarch64__
|
||||
register long x0 asm("x0") = thread_id;
|
||||
register long x1 asm("x1") = signo;
|
||||
register long x16 asm("x16") = 328;
|
||||
asm volatile("svc #0x80"
|
||||
: "+r" (x0)
|
||||
: "r" (x1), "r" (x16)
|
||||
: "memory");
|
||||
return x0 == 0;
|
||||
#else
|
||||
int result;
|
||||
asm volatile("syscall"
|
||||
: "=a" (result)
|
||||
: "a" (0x2000148), "D" (thread_id), "S" (signo)
|
||||
: "rcx", "r11", "memory");
|
||||
return result == 0;
|
||||
#endif
|
||||
int result;
|
||||
asm volatile("syscall"
|
||||
: "=a" (result)
|
||||
: "a" (0x2000148), "D" (thread_id), "S" (signo)
|
||||
: "rcx", "r11", "memory");
|
||||
return result == 0;
|
||||
}
|
||||
|
||||
void* OS::safeAlloc(size_t size) {
|
||||
@@ -256,8 +209,10 @@ Timer* OS::startTimer(u64 interval, TimerCallback callback, void* arg) {
|
||||
|
||||
void OS::stopTimer(Timer* timer) {
|
||||
dispatch_source_t source = (dispatch_source_t)timer;
|
||||
dispatch_source_cancel(source);
|
||||
dispatch_release(source);
|
||||
if (source != NULL) {
|
||||
dispatch_source_cancel(source);
|
||||
dispatch_release(source);
|
||||
}
|
||||
}
|
||||
|
||||
bool OS::getCpuDescription(char* buf, size_t size) {
|
||||
@@ -300,22 +255,4 @@ u64 OS::getTotalCpuTime(u64* utime, u64* stime) {
|
||||
return user + system + idle;
|
||||
}
|
||||
|
||||
void OS::copyFile(int src_fd, int dst_fd, off_t offset, size_t size) {
|
||||
char* buf = (char*)mmap(NULL, size + offset, PROT_READ, MAP_PRIVATE, src_fd, 0);
|
||||
if (buf == NULL) {
|
||||
return;
|
||||
}
|
||||
|
||||
while (size > 0) {
|
||||
ssize_t bytes = write(dst_fd, buf + offset, size < 262144 ? size : 262144);
|
||||
if (bytes <= 0) {
|
||||
break;
|
||||
}
|
||||
offset += (size_t)bytes;
|
||||
size -= (size_t)bytes;
|
||||
}
|
||||
|
||||
munmap(buf, offset);
|
||||
}
|
||||
|
||||
#endif // __APPLE__
|
||||
|
||||
@@ -32,10 +32,17 @@ class PerfEvents : public Engine {
|
||||
static long _interval;
|
||||
static Ring _ring;
|
||||
static CStack _cstack;
|
||||
static bool _print_extended_warning;
|
||||
|
||||
static void signalHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
|
||||
public:
|
||||
const char* name() {
|
||||
return "perf";
|
||||
}
|
||||
|
||||
const char* units();
|
||||
|
||||
Error check(Arguments& args);
|
||||
Error start(Arguments& args);
|
||||
void stop();
|
||||
@@ -43,15 +50,10 @@ class PerfEvents : public Engine {
|
||||
int getNativeTrace(void* ucontext, int tid, const void** callchain, int max_depth,
|
||||
CodeCache* java_methods, CodeCache* runtime_stubs);
|
||||
|
||||
const char* title();
|
||||
const char* units();
|
||||
|
||||
static void resetBuffer(int tid);
|
||||
|
||||
static bool supported();
|
||||
static const char* getEventName(int event_id);
|
||||
|
||||
static int createForThread(int tid);
|
||||
static bool createForThread(int tid);
|
||||
static void destroyForThread(int tid);
|
||||
};
|
||||
|
||||
|
||||
@@ -31,7 +31,6 @@
|
||||
#include <sys/syscall.h>
|
||||
#include <linux/perf_event.h>
|
||||
#include "arch.h"
|
||||
#include "log.h"
|
||||
#include "os.h"
|
||||
#include "perfEvents.h"
|
||||
#include "profiler.h"
|
||||
@@ -60,18 +59,7 @@ enum {
|
||||
};
|
||||
|
||||
|
||||
static int fetchInt(const char* file_name) {
|
||||
int fd = open(file_name, O_RDONLY);
|
||||
if (fd == -1) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
char num[16] = "0";
|
||||
ssize_t r = read(fd, num, sizeof(num) - 1);
|
||||
(void) r;
|
||||
close(fd);
|
||||
return atoi(num);
|
||||
}
|
||||
static const unsigned long PERF_PAGE_SIZE = sysconf(_SC_PAGESIZE);
|
||||
|
||||
// Get perf_event_attr.config numeric value of the given tracepoint name
|
||||
// by reading /sys/kernel/debug/tracing/events/<name>/id file
|
||||
@@ -83,66 +71,16 @@ static int findTracepointId(const char* name) {
|
||||
|
||||
*strchr(buf, ':') = '/'; // make path from event name
|
||||
|
||||
return fetchInt(buf);
|
||||
}
|
||||
|
||||
// Get perf_event_attr.type for the given event source
|
||||
// by reading /sys/bus/event_source/devices/<name>/type
|
||||
static int findDeviceType(const char* name) {
|
||||
char buf[256];
|
||||
if ((size_t)snprintf(buf, sizeof(buf), "/sys/bus/event_source/devices/%s/type", name) >= sizeof(buf)) {
|
||||
int fd = open(buf, O_RDONLY);
|
||||
if (fd == -1) {
|
||||
return 0;
|
||||
}
|
||||
return fetchInt(buf);
|
||||
}
|
||||
|
||||
// Convert pmu/event-name/ to pmu/param1=N,param2=M/
|
||||
static void resolvePmuEventName(const char* device, char* event, size_t size) {
|
||||
char buf[256];
|
||||
if ((size_t)snprintf(buf, sizeof(buf), "/sys/bus/event_source/devices/%s/events/%s", device, event) >= sizeof(buf)) {
|
||||
return;
|
||||
}
|
||||
|
||||
int fd = open(buf, O_RDONLY);
|
||||
if (fd == -1) {
|
||||
return;
|
||||
}
|
||||
|
||||
ssize_t r = read(fd, event, size);
|
||||
if (r > 0 && (r == size || event[r - 1] == '\n')) {
|
||||
event[r - 1] = 0;
|
||||
}
|
||||
char id[16] = "0";
|
||||
ssize_t r = read(fd, id, sizeof(id) - 1);
|
||||
(void) r;
|
||||
close(fd);
|
||||
}
|
||||
|
||||
// Set a PMU parameter (such as umask) to the corresponding config field
|
||||
static bool setPmuConfig(const char* device, const char* param, __u64* config, __u64 val) {
|
||||
char buf[256];
|
||||
if ((size_t)snprintf(buf, sizeof(buf), "/sys/bus/event_source/devices/%s/format/%s", device, param) >= sizeof(buf)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
int fd = open(buf, O_RDONLY);
|
||||
if (fd == -1) {
|
||||
return false;
|
||||
}
|
||||
|
||||
ssize_t r = read(fd, buf, sizeof(buf));
|
||||
close(fd);
|
||||
|
||||
if (r > 0 && r < sizeof(buf)) {
|
||||
if (strncmp(buf, "config:", 7) == 0) {
|
||||
config[0] |= val << atoi(buf + 7);
|
||||
return true;
|
||||
} else if (strncmp(buf, "config1:", 8) == 0) {
|
||||
config[1] |= val << atoi(buf + 8);
|
||||
return true;
|
||||
} else if (strncmp(buf, "config2:", 8) == 0) {
|
||||
config[2] |= val << atoi(buf + 8);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
return atoi(id);
|
||||
}
|
||||
|
||||
|
||||
@@ -156,20 +94,10 @@ struct PerfEventType {
|
||||
long default_interval;
|
||||
__u32 type;
|
||||
__u64 config;
|
||||
__u64 config1;
|
||||
__u64 config2;
|
||||
__u32 bp_type;
|
||||
__u32 bp_len;
|
||||
int counter_arg;
|
||||
|
||||
enum {
|
||||
IDX_PREDEFINED = 12,
|
||||
IDX_RAW,
|
||||
IDX_PMU,
|
||||
IDX_BREAKPOINT,
|
||||
IDX_TRACEPOINT,
|
||||
IDX_KPROBE,
|
||||
IDX_UPROBE,
|
||||
};
|
||||
|
||||
static PerfEventType AVAILABLE_EVENTS[];
|
||||
static FunctionWithCounter KNOWN_FUNCTIONS[];
|
||||
|
||||
@@ -184,22 +112,22 @@ struct PerfEventType {
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Breakpoint format: func[+offset][/len][:rwx][{arg}]
|
||||
static PerfEventType* findByType(__u32 type) {
|
||||
for (PerfEventType* event = AVAILABLE_EVENTS; ; event++) {
|
||||
if (event->type == type) {
|
||||
return event;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Breakpoint format: func[+offset][/len][:rwx]
|
||||
static PerfEventType* getBreakpoint(const char* name, __u32 bp_type, __u32 bp_len) {
|
||||
char buf[256];
|
||||
strncpy(buf, name, sizeof(buf) - 1);
|
||||
buf[sizeof(buf) - 1] = 0;
|
||||
|
||||
// Parse counter arg [{arg}]
|
||||
int counter_arg = 0;
|
||||
char* c = strrchr(buf, '{');
|
||||
if (c != NULL && c[1] >= '1' && c[1] <= '9') {
|
||||
*c++ = 0;
|
||||
counter_arg = atoi(c);
|
||||
}
|
||||
|
||||
// Parse access type [:rwx]
|
||||
c = strrchr(buf, ':');
|
||||
char* c = strrchr(buf, ':');
|
||||
if (c != NULL && c != name && c[-1] != ':') {
|
||||
*c++ = 0;
|
||||
if (strcmp(c, "r") == 0) {
|
||||
@@ -244,114 +172,21 @@ struct PerfEventType {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
PerfEventType* breakpoint = &AVAILABLE_EVENTS[IDX_BREAKPOINT];
|
||||
breakpoint->config = bp_type;
|
||||
breakpoint->config1 = addr + offset;
|
||||
breakpoint->config2 = bp_len;
|
||||
breakpoint->counter_arg = bp_type == HW_BREAKPOINT_X && counter_arg == 0 ? findCounterArg(buf) : counter_arg;
|
||||
PerfEventType* breakpoint = findByType(PERF_TYPE_BREAKPOINT);
|
||||
breakpoint->config = addr + offset;
|
||||
breakpoint->bp_type = bp_type;
|
||||
breakpoint->bp_len = bp_len;
|
||||
breakpoint->counter_arg = bp_type == HW_BREAKPOINT_X ? findCounterArg(buf) : 0;
|
||||
return breakpoint;
|
||||
}
|
||||
|
||||
static PerfEventType* getTracepoint(int tracepoint_id) {
|
||||
PerfEventType* tracepoint = &AVAILABLE_EVENTS[IDX_TRACEPOINT];
|
||||
PerfEventType* tracepoint = findByType(PERF_TYPE_TRACEPOINT);
|
||||
tracepoint->config = tracepoint_id;
|
||||
return tracepoint;
|
||||
}
|
||||
|
||||
static PerfEventType* getProbe(PerfEventType* probe, const char* type, const char* name, __u64 ret) {
|
||||
static char probe_func[256];
|
||||
strncpy(probe_func, name, sizeof(probe_func) - 1);
|
||||
probe_func[sizeof(probe_func) - 1] = 0;
|
||||
|
||||
if (probe->type == 0 && (probe->type = findDeviceType(type)) == 0) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
long long offset = 0;
|
||||
char* c = strrchr(probe_func, '+');
|
||||
if (c != NULL) {
|
||||
*c++ = 0;
|
||||
offset = strtoll(c, NULL, 0);
|
||||
}
|
||||
|
||||
probe->config = ret;
|
||||
probe->config1 = (__u64)(uintptr_t)probe_func;
|
||||
probe->config2 = offset;
|
||||
return probe;
|
||||
}
|
||||
|
||||
static PerfEventType* getRawEvent(__u64 config) {
|
||||
PerfEventType* raw = &AVAILABLE_EVENTS[IDX_RAW];
|
||||
raw->config = config;
|
||||
return raw;
|
||||
}
|
||||
|
||||
static PerfEventType* getPmuEvent(const char* name) {
|
||||
char buf[256];
|
||||
strncpy(buf, name, sizeof(buf) - 1);
|
||||
buf[sizeof(buf) - 1] = 0;
|
||||
|
||||
char* descriptor = strchr(buf, '/');
|
||||
*descriptor++ = 0;
|
||||
descriptor[strlen(descriptor) - 1] = 0;
|
||||
|
||||
PerfEventType* raw = &AVAILABLE_EVENTS[IDX_PMU];
|
||||
if ((raw->type = findDeviceType(buf)) == 0) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// pmu/rNNN/
|
||||
if (descriptor[0] == 'r' && descriptor[1] >= '0') {
|
||||
char* end;
|
||||
raw->config = strtoull(descriptor + 1, &end, 16);
|
||||
if (*end == 0) {
|
||||
return raw;
|
||||
}
|
||||
}
|
||||
|
||||
// Resolve event name to the list of parameters
|
||||
resolvePmuEventName(buf, descriptor, sizeof(buf) - (descriptor - buf));
|
||||
|
||||
raw->config = 0;
|
||||
raw->config1 = 0;
|
||||
raw->config2 = 0;
|
||||
|
||||
// Parse parameters
|
||||
while (descriptor != NULL && descriptor[0]) {
|
||||
char* p = descriptor;
|
||||
if ((descriptor = strchr(p, ',')) != NULL || (descriptor = strchr(p, ':')) != NULL) {
|
||||
*descriptor++ = 0;
|
||||
}
|
||||
|
||||
__u64 val = 1;
|
||||
char* eq = strchr(p, '=');
|
||||
if (eq != NULL) {
|
||||
*eq++ = 0;
|
||||
val = strtoull(eq, NULL, 0);
|
||||
}
|
||||
|
||||
if (strcmp(p, "config") == 0) {
|
||||
raw->config = val;
|
||||
} else if (strcmp(p, "config1") == 0) {
|
||||
raw->config1 = val;
|
||||
} else if (strcmp(p, "config2") == 0) {
|
||||
raw->config2 = val;
|
||||
} else if (!setPmuConfig(buf, p, &raw->config, val)) {
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
return raw;
|
||||
}
|
||||
|
||||
static PerfEventType* forName(const char* name) {
|
||||
// Look through the table of predefined perf events
|
||||
for (int i = 0; i < IDX_PREDEFINED; i++) {
|
||||
if (strcmp(name, AVAILABLE_EVENTS[i].name) == 0) {
|
||||
return &AVAILABLE_EVENTS[i];
|
||||
}
|
||||
}
|
||||
|
||||
// Hardware breakpoint
|
||||
if (strncmp(name, "mem:", 4) == 0) {
|
||||
return getBreakpoint(name + 4, HW_BREAKPOINT_RW, 1);
|
||||
@@ -363,38 +198,16 @@ struct PerfEventType {
|
||||
return tracepoint_id > 0 ? getTracepoint(tracepoint_id) : NULL;
|
||||
}
|
||||
|
||||
// kprobe or uprobe
|
||||
if (strncmp(name, "kprobe:", 7) == 0) {
|
||||
return getProbe(&AVAILABLE_EVENTS[IDX_KPROBE], "kprobe", name + 7, 0);
|
||||
}
|
||||
if (strncmp(name, "uprobe:", 7) == 0) {
|
||||
return getProbe(&AVAILABLE_EVENTS[IDX_UPROBE], "uprobe", name + 7, 0);
|
||||
}
|
||||
if (strncmp(name, "kretprobe:", 10) == 0) {
|
||||
return getProbe(&AVAILABLE_EVENTS[IDX_KPROBE], "kprobe", name + 10, 1);
|
||||
}
|
||||
if (strncmp(name, "uretprobe:", 10) == 0) {
|
||||
return getProbe(&AVAILABLE_EVENTS[IDX_UPROBE], "uprobe", name + 10, 1);
|
||||
}
|
||||
|
||||
// Raw PMU register: rNNN
|
||||
if (name[0] == 'r' && name[1] >= '0') {
|
||||
char* end;
|
||||
__u64 reg = strtoull(name + 1, &end, 16);
|
||||
if (*end == 0) {
|
||||
return getRawEvent(reg);
|
||||
// Look through the table of predefined perf events
|
||||
for (PerfEventType* event = AVAILABLE_EVENTS; event->name != NULL; event++) {
|
||||
if (strcmp(name, event->name) == 0) {
|
||||
return event;
|
||||
}
|
||||
}
|
||||
|
||||
// Raw perf event descriptor: pmu/event-descriptor/
|
||||
const char* s = strchr(name, '/');
|
||||
if (s > name && s[1] != 0 && s[strlen(s) - 1] == '/') {
|
||||
return getPmuEvent(name);
|
||||
}
|
||||
|
||||
// Kernel tracepoints defined in debugfs
|
||||
s = strchr(name, ':');
|
||||
if (s != NULL && s[1] != ':') {
|
||||
const char* c = strchr(name, ':');
|
||||
if (c != NULL && c[1] != ':') {
|
||||
int tracepoint_id = findTracepointId(name);
|
||||
if (tracepoint_id > 0) {
|
||||
return getTracepoint(tracepoint_id);
|
||||
@@ -419,7 +232,7 @@ PerfEventType PerfEventType::AVAILABLE_EVENTS[] = {
|
||||
{"instructions", 1000000, PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS},
|
||||
{"cache-references", 1000000, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES},
|
||||
{"cache-misses", 1000, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES},
|
||||
{"branch-instructions", 1000000, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS},
|
||||
{"branches", 1000000, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS},
|
||||
{"branch-misses", 1000, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES},
|
||||
{"bus-cycles", 1000000, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES},
|
||||
|
||||
@@ -427,20 +240,15 @@ PerfEventType PerfEventType::AVAILABLE_EVENTS[] = {
|
||||
{"LLC-load-misses", 1000, PERF_TYPE_HW_CACHE, LOAD_MISS(PERF_COUNT_HW_CACHE_LL)},
|
||||
{"dTLB-load-misses", 1000, PERF_TYPE_HW_CACHE, LOAD_MISS(PERF_COUNT_HW_CACHE_DTLB)},
|
||||
|
||||
{"rNNN", 1000, PERF_TYPE_RAW, 0}, /* IDX_RAW */
|
||||
{"pmu/event-descriptor/", 1000, PERF_TYPE_RAW, 0}, /* IDX_PMU */
|
||||
{"mem:breakpoint", 1, PERF_TYPE_BREAKPOINT, 0},
|
||||
{"trace:tracepoint", 1, PERF_TYPE_TRACEPOINT, 0},
|
||||
|
||||
{"mem:breakpoint", 1, PERF_TYPE_BREAKPOINT, 0}, /* IDX_BREAKPOINT */
|
||||
{"trace:tracepoint", 1, PERF_TYPE_TRACEPOINT, 0}, /* IDX_TRACEPOINT */
|
||||
|
||||
{"kprobe:func", 1, 0, 0}, /* IDX_KPROBE */
|
||||
{"uprobe:path", 1, 0, 0}, /* IDX_UPROBE */
|
||||
{NULL}
|
||||
};
|
||||
|
||||
FunctionWithCounter PerfEventType::KNOWN_FUNCTIONS[] = {
|
||||
{"malloc", 1},
|
||||
{"mmap", 2},
|
||||
{"munmap", 2},
|
||||
{"read", 3},
|
||||
{"write", 3},
|
||||
{"send", 3},
|
||||
@@ -458,21 +266,21 @@ class RingBuffer {
|
||||
|
||||
public:
|
||||
RingBuffer(struct perf_event_mmap_page* page) {
|
||||
_start = (const char*)page + OS::page_size;
|
||||
_start = (const char*)page + PERF_PAGE_SIZE;
|
||||
}
|
||||
|
||||
struct perf_event_header* seek(u64 offset) {
|
||||
_offset = (unsigned long)offset & OS::page_mask;
|
||||
_offset = (unsigned long)offset & (PERF_PAGE_SIZE - 1);
|
||||
return (struct perf_event_header*)(_start + _offset);
|
||||
}
|
||||
|
||||
u64 next() {
|
||||
_offset = (_offset + sizeof(u64)) & OS::page_mask;
|
||||
_offset = (_offset + sizeof(u64)) & (PERF_PAGE_SIZE - 1);
|
||||
return *(u64*)(_start + _offset);
|
||||
}
|
||||
|
||||
u64 peek(unsigned long words) {
|
||||
unsigned long peek_offset = (_offset + words * sizeof(u64)) & OS::page_mask;
|
||||
unsigned long peek_offset = (_offset + words * sizeof(u64)) & (PERF_PAGE_SIZE - 1);
|
||||
return *(u64*)(_start + peek_offset);
|
||||
}
|
||||
};
|
||||
@@ -493,16 +301,17 @@ PerfEventType* PerfEvents::_event_type = NULL;
|
||||
long PerfEvents::_interval;
|
||||
Ring PerfEvents::_ring;
|
||||
CStack PerfEvents::_cstack;
|
||||
bool PerfEvents::_print_extended_warning;
|
||||
|
||||
int PerfEvents::createForThread(int tid) {
|
||||
bool PerfEvents::createForThread(int tid) {
|
||||
if (tid >= _max_events) {
|
||||
Log::warn("tid[%d] > pid_max[%d]. Restart profiler after changing pid_max", tid, _max_events);
|
||||
return -1;
|
||||
fprintf(stderr, "WARNING: tid[%d] > pid_max[%d]. Restart profiler after changing pid_max\n", tid, _max_events);
|
||||
return false;
|
||||
}
|
||||
|
||||
PerfEventType* event_type = _event_type;
|
||||
if (event_type == NULL) {
|
||||
return -1;
|
||||
return false;
|
||||
}
|
||||
|
||||
struct perf_event_attr attr = {0};
|
||||
@@ -510,12 +319,12 @@ int PerfEvents::createForThread(int tid) {
|
||||
attr.type = event_type->type;
|
||||
|
||||
if (attr.type == PERF_TYPE_BREAKPOINT) {
|
||||
attr.bp_type = event_type->config;
|
||||
attr.bp_addr = event_type->config;
|
||||
attr.bp_type = event_type->bp_type;
|
||||
attr.bp_len = event_type->bp_len;
|
||||
} else {
|
||||
attr.config = event_type->config;
|
||||
}
|
||||
attr.config1 = event_type->config1;
|
||||
attr.config2 = event_type->config2;
|
||||
|
||||
// Hardware events may not always support zero skid
|
||||
if (attr.type == PERF_TYPE_SOFTWARE) {
|
||||
@@ -547,19 +356,24 @@ int PerfEvents::createForThread(int tid) {
|
||||
int fd = syscall(__NR_perf_event_open, &attr, tid, -1, -1, 0);
|
||||
if (fd == -1) {
|
||||
int err = errno;
|
||||
Log::warn("perf_event_open failed: %s", strerror(errno));
|
||||
return err;
|
||||
perror("perf_event_open failed");
|
||||
if (err == EACCES && _print_extended_warning) {
|
||||
fprintf(stderr, "Due to permission restrictions, you cannot collect kernel events.\n"
|
||||
"Try with --all-user option, or 'echo 1 > /proc/sys/kernel/perf_event_paranoid'\n");
|
||||
_print_extended_warning = false;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!__sync_bool_compare_and_swap(&_events[tid]._fd, 0, fd)) {
|
||||
// Lost race. The event is created either from start() or from onThreadStart()
|
||||
close(fd);
|
||||
return -1;
|
||||
return false;
|
||||
}
|
||||
|
||||
void* page = mmap(NULL, 2 * OS::page_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
||||
void* page = mmap(NULL, 2 * PERF_PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
||||
if (page == MAP_FAILED) {
|
||||
Log::warn("perf_event mmap failed: %s", strerror(errno));
|
||||
perror("perf_event mmap failed");
|
||||
page = NULL;
|
||||
}
|
||||
|
||||
@@ -577,7 +391,7 @@ int PerfEvents::createForThread(int tid) {
|
||||
ioctl(fd, PERF_EVENT_IOC_RESET, 0);
|
||||
ioctl(fd, PERF_EVENT_IOC_REFRESH, 1);
|
||||
|
||||
return 0;
|
||||
return true;
|
||||
}
|
||||
|
||||
void PerfEvents::destroyForThread(int tid) {
|
||||
@@ -593,7 +407,7 @@ void PerfEvents::destroyForThread(int tid) {
|
||||
}
|
||||
if (event->_page != NULL) {
|
||||
event->lock();
|
||||
munmap(event->_page, 2 * OS::page_size);
|
||||
munmap(event->_page, 2 * PERF_PAGE_SIZE);
|
||||
event->_page = NULL;
|
||||
event->unlock();
|
||||
}
|
||||
@@ -620,34 +434,27 @@ void PerfEvents::signalHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
|
||||
ExecutionEvent event;
|
||||
Profiler::_instance.recordSample(ucontext, counter, 0, &event);
|
||||
} else {
|
||||
resetBuffer(OS::threadId());
|
||||
}
|
||||
|
||||
ioctl(siginfo->si_fd, PERF_EVENT_IOC_RESET, 0);
|
||||
ioctl(siginfo->si_fd, PERF_EVENT_IOC_REFRESH, 1);
|
||||
}
|
||||
|
||||
const char* PerfEvents::title() {
|
||||
if (_event_type == NULL || _event_type->name == EVENT_CPU) {
|
||||
return "CPU profile";
|
||||
} else if (_event_type->type == PERF_TYPE_SOFTWARE || _event_type->type == PERF_TYPE_HARDWARE || _event_type->type == PERF_TYPE_HW_CACHE) {
|
||||
return _event_type->name;
|
||||
} else {
|
||||
return "Flame Graph";
|
||||
}
|
||||
}
|
||||
|
||||
const char* PerfEvents::units() {
|
||||
return _event_type == NULL || _event_type->name == EVENT_CPU ? "ns" : "total";
|
||||
if (_event_type == NULL || _event_type->name == EVENT_CPU) {
|
||||
return "ns";
|
||||
} else if (_event_type->type == PERF_TYPE_BREAKPOINT || _event_type->type == PERF_TYPE_TRACEPOINT) {
|
||||
return "events";
|
||||
}
|
||||
|
||||
const char* dash = strrchr(_event_type->name, '-');
|
||||
return dash != NULL ? dash + 1 : _event_type->name;
|
||||
}
|
||||
|
||||
Error PerfEvents::check(Arguments& args) {
|
||||
PerfEventType* event_type = PerfEventType::forName(args._event);
|
||||
PerfEventType* event_type = PerfEventType::forName(args._event_desc);
|
||||
if (event_type == NULL) {
|
||||
return Error("Unsupported event type");
|
||||
} else if (event_type->counter_arg > 4) {
|
||||
return Error("Only arguments 1-4 can be counted");
|
||||
}
|
||||
|
||||
struct perf_event_attr attr = {0};
|
||||
@@ -655,12 +462,12 @@ Error PerfEvents::check(Arguments& args) {
|
||||
attr.type = event_type->type;
|
||||
|
||||
if (attr.type == PERF_TYPE_BREAKPOINT) {
|
||||
attr.bp_type = event_type->config;
|
||||
attr.bp_addr = event_type->config;
|
||||
attr.bp_type = event_type->bp_type;
|
||||
attr.bp_len = event_type->bp_len;
|
||||
} else {
|
||||
attr.config = event_type->config;
|
||||
}
|
||||
attr.config1 = event_type->config1;
|
||||
attr.config2 = event_type->config2;
|
||||
|
||||
attr.sample_period = event_type->default_interval;
|
||||
attr.sample_type = PERF_SAMPLE_CALLCHAIN;
|
||||
@@ -694,11 +501,9 @@ Error PerfEvents::check(Arguments& args) {
|
||||
}
|
||||
|
||||
Error PerfEvents::start(Arguments& args) {
|
||||
_event_type = PerfEventType::forName(args._event);
|
||||
_event_type = PerfEventType::forName(args._event_desc);
|
||||
if (_event_type == NULL) {
|
||||
return Error("Unsupported event type");
|
||||
} else if (_event_type->counter_arg > 4) {
|
||||
return Error("Only arguments 1-4 can be counted");
|
||||
}
|
||||
|
||||
if (args._interval < 0) {
|
||||
@@ -708,12 +513,13 @@ Error PerfEvents::start(Arguments& args) {
|
||||
|
||||
_ring = args._ring;
|
||||
if (_ring != RING_USER && !Symbols::haveKernelSymbols()) {
|
||||
Log::warn("Kernel symbols are unavailable due to restrictions. Try");
|
||||
Log::warn(" sysctl kernel.kptr_restrict=0");
|
||||
Log::warn(" sysctl kernel.perf_event_paranoid=1");
|
||||
fprintf(stderr, "WARNING: Kernel symbols are unavailable due to restrictions. Try\n"
|
||||
" echo 0 > /proc/sys/kernel/kptr_restrict\n"
|
||||
" echo 1 > /proc/sys/kernel/perf_event_paranoid\n");
|
||||
_ring = RING_USER;
|
||||
}
|
||||
_cstack = args._cstack;
|
||||
_print_extended_warning = _ring != RING_USER;
|
||||
|
||||
int max_events = OS::getMaxThreadId();
|
||||
if (max_events != _max_events) {
|
||||
@@ -728,23 +534,16 @@ Error PerfEvents::start(Arguments& args) {
|
||||
Profiler::_instance.switchThreadEvents(JVMTI_ENABLE);
|
||||
|
||||
// Create perf_events for all existing threads
|
||||
int err;
|
||||
bool created = false;
|
||||
ThreadList* thread_list = OS::listThreads();
|
||||
for (int tid; (tid = thread_list->next()) != -1; ) {
|
||||
if ((err = createForThread(tid)) == 0) {
|
||||
created = true;
|
||||
}
|
||||
created |= createForThread(tid);
|
||||
}
|
||||
delete thread_list;
|
||||
|
||||
if (!created) {
|
||||
Profiler::_instance.switchThreadEvents(JVMTI_DISABLE);
|
||||
if (err == EACCES || err == EPERM) {
|
||||
return Error("No access to perf events. Try --all-user option or 'sysctl kernel.perf_event_paranoid=1'");
|
||||
} else {
|
||||
return Error("Perf events unavailable");
|
||||
}
|
||||
return Error("Perf events unavailable. See stderr of the target process.");
|
||||
}
|
||||
return Error::OK;
|
||||
}
|
||||
@@ -828,22 +627,6 @@ stack_complete:
|
||||
return depth;
|
||||
}
|
||||
|
||||
void PerfEvents::resetBuffer(int tid) {
|
||||
PerfEvent* event = &_events[tid];
|
||||
if (!event->tryLock()) {
|
||||
return; // the event is being destroyed
|
||||
}
|
||||
|
||||
struct perf_event_mmap_page* page = event->_page;
|
||||
if (page != NULL) {
|
||||
u64 head = page->data_head;
|
||||
rmb();
|
||||
page->data_tail = head;
|
||||
}
|
||||
|
||||
event->unlock();
|
||||
}
|
||||
|
||||
bool PerfEvents::supported() {
|
||||
// The official way of knowing if perf_event_open() support is enabled
|
||||
// is checking for the existence of the file /proc/sys/kernel/perf_event_paranoid
|
||||
|
||||
@@ -24,17 +24,14 @@ PerfEvent* PerfEvents::_events;
|
||||
PerfEventType* PerfEvents::_event_type;
|
||||
long PerfEvents::_interval;
|
||||
Ring PerfEvents::_ring;
|
||||
bool PerfEvents::_print_extended_warning;
|
||||
|
||||
|
||||
void PerfEvents::signalHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
}
|
||||
|
||||
const char* PerfEvents::title() {
|
||||
return Engine::title();
|
||||
}
|
||||
|
||||
const char* PerfEvents::units() {
|
||||
return Engine::units();
|
||||
return "ns";
|
||||
}
|
||||
|
||||
Error PerfEvents::check(Arguments& args) {
|
||||
@@ -53,9 +50,6 @@ int PerfEvents::getNativeTrace(void* ucontext, int tid, const void** callchain,
|
||||
return 0;
|
||||
}
|
||||
|
||||
void PerfEvents::resetBuffer(int tid) {
|
||||
}
|
||||
|
||||
bool PerfEvents::supported() {
|
||||
return false;
|
||||
}
|
||||
@@ -64,8 +58,8 @@ const char* PerfEvents::getEventName(int event_id) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int PerfEvents::createForThread(int tid) {
|
||||
return -1;
|
||||
bool PerfEvents::createForThread(int tid) {
|
||||
return false;
|
||||
}
|
||||
|
||||
void PerfEvents::destroyForThread(int tid) {
|
||||
|
||||
474
src/profiler.cpp
474
src/profiler.cpp
@@ -18,6 +18,7 @@
|
||||
#include <fstream>
|
||||
#include <dlfcn.h>
|
||||
#include <unistd.h>
|
||||
#include <sched.h>
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
@@ -30,10 +31,10 @@
|
||||
#include "wallClock.h"
|
||||
#include "instrument.h"
|
||||
#include "itimer.h"
|
||||
#include "jstack.h"
|
||||
#include "flameGraph.h"
|
||||
#include "flightRecorder.h"
|
||||
#include "frameName.h"
|
||||
#include "log.h"
|
||||
#include "os.h"
|
||||
#include "stackFrame.h"
|
||||
#include "symbols.h"
|
||||
@@ -42,12 +43,13 @@
|
||||
|
||||
Profiler Profiler::_instance;
|
||||
|
||||
static Engine noop_engine;
|
||||
static NoopEngine noop_engine;
|
||||
static PerfEvents perf_events;
|
||||
static AllocTracer alloc_tracer;
|
||||
static LockTracer lock_tracer;
|
||||
static WallClock wall_clock;
|
||||
static ITimer itimer;
|
||||
static JStack jstack;
|
||||
static Instrument instrument;
|
||||
|
||||
|
||||
@@ -60,15 +62,9 @@ enum StackRecovery {
|
||||
SCAN_STACK = 0x8,
|
||||
LAST_JAVA_PC = 0x10,
|
||||
GC_TRACES = 0x20,
|
||||
JAVA_STATE = 0x40,
|
||||
MAX_RECOVERY = 0x7f
|
||||
};
|
||||
|
||||
|
||||
enum EventMask {
|
||||
EM_CPU = 1,
|
||||
EM_ALLOC = 2,
|
||||
EM_LOCK = 4
|
||||
HOTSPOT_ONLY = LAST_JAVA_PC | GC_TRACES,
|
||||
MAX_RECOVERY = MOVE_SP | MOVE_SP2 | POP_FRAME | SCAN_STACK | LAST_JAVA_PC | GC_TRACES
|
||||
};
|
||||
|
||||
|
||||
@@ -76,9 +72,12 @@ struct MethodSample {
|
||||
u64 samples;
|
||||
u64 counter;
|
||||
|
||||
void add(u64 add_samples, u64 add_counter) {
|
||||
samples += add_samples;
|
||||
counter += add_counter;
|
||||
MethodSample() : samples(0), counter(0) {
|
||||
}
|
||||
|
||||
void add(CallTraceSample* s) {
|
||||
samples += s->samples;
|
||||
counter += s->counter;
|
||||
}
|
||||
};
|
||||
|
||||
@@ -101,12 +100,6 @@ void Profiler::removeJavaMethod(const void* address, jmethodID method) {
|
||||
_jit_lock.unlock();
|
||||
}
|
||||
|
||||
void Profiler::resetJavaMethods() {
|
||||
_jit_lock.lock();
|
||||
_java_methods.reset();
|
||||
_jit_lock.unlock();
|
||||
}
|
||||
|
||||
void Profiler::addRuntimeStub(const void* address, int length, const char* name) {
|
||||
_stubs_lock.lock();
|
||||
_runtime_stubs.add(address, length, name, true);
|
||||
@@ -140,15 +133,14 @@ const char* Profiler::asgctError(int code) {
|
||||
case ticks_not_walkable_not_Java:
|
||||
// Not in Java context at all; this is not an error
|
||||
return NULL;
|
||||
case ticks_thread_exit:
|
||||
// The last Java frame has been popped off, only native frames left
|
||||
return NULL;
|
||||
case ticks_GC_active:
|
||||
return "GC_active";
|
||||
case ticks_unknown_Java:
|
||||
return "unknown_Java";
|
||||
case ticks_not_walkable_Java:
|
||||
return "not_walkable_Java";
|
||||
case ticks_thread_exit:
|
||||
return "thread_exit";
|
||||
case ticks_deopt:
|
||||
return "deoptimization";
|
||||
case ticks_safepoint:
|
||||
@@ -233,27 +225,10 @@ const char* Profiler::findNativeMethod(const void* address) {
|
||||
return lib == NULL ? NULL : lib->binarySearch(address);
|
||||
}
|
||||
|
||||
// Make sure the top frame is Java, otherwise AsyncGetCallTrace
|
||||
// will attempt to use frame pointer based stack walking
|
||||
bool Profiler::inJavaCode(void* ucontext) {
|
||||
if (ucontext == NULL) {
|
||||
return true;
|
||||
}
|
||||
|
||||
const void* pc = (const void*)StackFrame(ucontext).pc();
|
||||
if (_runtime_stubs.contains(pc)) {
|
||||
_stubs_lock.lockShared();
|
||||
jmethodID method = _runtime_stubs.find(pc);
|
||||
_stubs_lock.unlockShared();
|
||||
return method == NULL || strcmp((const char*)method, "call_stub") != 0;
|
||||
}
|
||||
return _java_methods.contains(pc);
|
||||
}
|
||||
|
||||
int Profiler::getNativeTrace(Engine* engine, void* ucontext, ASGCT_CallFrame* frames, int tid) {
|
||||
int Profiler::getNativeTrace(void* ucontext, ASGCT_CallFrame* frames, int tid) {
|
||||
const void* native_callchain[MAX_NATIVE_FRAMES];
|
||||
int native_frames = engine->getNativeTrace(ucontext, tid, native_callchain, MAX_NATIVE_FRAMES,
|
||||
&_java_methods, &_runtime_stubs);
|
||||
int native_frames = _engine->getNativeTrace(ucontext, tid, native_callchain, MAX_NATIVE_FRAMES,
|
||||
&_java_methods, &_runtime_stubs);
|
||||
|
||||
int depth = 0;
|
||||
jmethodID prev_method = NULL;
|
||||
@@ -285,25 +260,9 @@ int Profiler::getJavaTraceAsync(void* ucontext, ASGCT_CallFrame* frames, int max
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (_safe_mode & JAVA_STATE) {
|
||||
int state = vm_thread->state();
|
||||
if ((state == 8 || state == 9) && !inJavaCode(ucontext)) {
|
||||
// Thread is in Java state, but does not have a valid Java frame on top of the stack
|
||||
atomicInc(_failures[-ticks_unknown_Java]);
|
||||
frames->bci = BCI_ERROR;
|
||||
frames->method_id = (jmethodID)asgctError(ticks_unknown_Java);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
JitWriteProtection jit(false);
|
||||
ASGCT_CallTrace trace = {jni, 0, frames};
|
||||
VM::_asyncGetCallTrace(&trace, max_depth, ucontext);
|
||||
|
||||
if (trace.num_frames > 0) {
|
||||
return trace.num_frames;
|
||||
}
|
||||
|
||||
if ((trace.num_frames == ticks_unknown_Java || trace.num_frames == ticks_not_walkable_Java) && _safe_mode < MAX_RECOVERY) {
|
||||
// If current Java stack is not walkable (e.g. the top frame is not fully constructed),
|
||||
// try to manually pop the top frame off, hoping that the previous frame is walkable.
|
||||
@@ -390,48 +349,32 @@ int Profiler::getJavaTraceAsync(void* ucontext, ASGCT_CallFrame* frames, int max
|
||||
}
|
||||
}
|
||||
} else if (trace.num_frames == ticks_unknown_not_Java && !(_safe_mode & LAST_JAVA_PC)) {
|
||||
uintptr_t& sp = vm_thread->lastJavaSP();
|
||||
uintptr_t& pc = vm_thread->lastJavaPC();
|
||||
if (sp != 0 && pc == 0) {
|
||||
// We have the last Java frame anchor, but it is not marked as walkable.
|
||||
// Make it walkable here
|
||||
uintptr_t saved_sp = sp;
|
||||
pc = ((uintptr_t*)saved_sp)[-1];
|
||||
|
||||
AddressType addr_type = getAddressType((instruction_t*)pc);
|
||||
if (addr_type != ADDR_UNKNOWN) {
|
||||
// AGCT fails if the last Java frame is a Runtime Stub with an invalid _frame_complete_offset.
|
||||
// In this case we manually replace last Java frame to the previous frame
|
||||
if (addr_type == ADDR_STUB) {
|
||||
RuntimeStub* stub = RuntimeStub::findBlob((instruction_t*)pc);
|
||||
if (stub != NULL && stub->frameSize() > 0 && stub->frameSize() < 256) {
|
||||
sp = saved_sp + stub->frameSize() * sizeof(uintptr_t);
|
||||
pc = ((uintptr_t*)sp)[-1];
|
||||
}
|
||||
}
|
||||
VM::_asyncGetCallTrace(&trace, max_depth, ucontext);
|
||||
}
|
||||
|
||||
sp = saved_sp;
|
||||
pc = 0;
|
||||
}
|
||||
} else if (trace.num_frames == ticks_not_walkable_not_Java && !(_safe_mode & LAST_JAVA_PC)) {
|
||||
uintptr_t& sp = vm_thread->lastJavaSP();
|
||||
uintptr_t& pc = vm_thread->lastJavaPC();
|
||||
if (sp != 0 && pc != 0 && getAddressType((instruction_t*)pc) == ADDR_STUB) {
|
||||
// Similar to the above: last Java frame is set,
|
||||
// but points to a Runtime Stub with an invalid _frame_complete_offset
|
||||
RuntimeStub* stub = RuntimeStub::findBlob((instruction_t*)pc);
|
||||
if (stub != NULL && stub->frameSize() > 0 && stub->frameSize() < 256) {
|
||||
VMThread* thread = VMThread::fromEnv(jni);
|
||||
if (thread != NULL) {
|
||||
uintptr_t& sp = thread->lastJavaSP();
|
||||
uintptr_t& pc = thread->lastJavaPC();
|
||||
if (sp != 0 && pc == 0) {
|
||||
// We have the last Java frame anchor, but it is not marked as walkable.
|
||||
// Make it walkable here
|
||||
uintptr_t saved_sp = sp;
|
||||
uintptr_t saved_pc = pc;
|
||||
pc = ((uintptr_t*)saved_sp)[-1];
|
||||
|
||||
sp = saved_sp + stub->frameSize() * sizeof(uintptr_t);
|
||||
pc = ((uintptr_t*)sp)[-1];
|
||||
VM::_asyncGetCallTrace(&trace, max_depth, ucontext);
|
||||
AddressType addr_type = getAddressType((instruction_t*)pc);
|
||||
if (addr_type != ADDR_UNKNOWN) {
|
||||
// AGCT fails if the last Java frame is a Runtime Stub with an invalid _frame_complete_offset.
|
||||
// In this case we manually replace last Java frame to the previous frame
|
||||
if (addr_type == ADDR_STUB) {
|
||||
RuntimeStub* stub = RuntimeStub::findBlob((instruction_t*)pc);
|
||||
if (stub != NULL && stub->frameSize() > 0 && stub->frameSize() < 256) {
|
||||
sp = saved_sp + stub->frameSize() * sizeof(uintptr_t);
|
||||
pc = ((uintptr_t*)sp)[-1];
|
||||
}
|
||||
}
|
||||
VM::_asyncGetCallTrace(&trace, max_depth, ucontext);
|
||||
}
|
||||
|
||||
sp = saved_sp;
|
||||
pc = saved_pc;
|
||||
pc = 0;
|
||||
}
|
||||
}
|
||||
} else if (trace.num_frames == ticks_GC_active && !(_safe_mode & GC_TRACES)) {
|
||||
@@ -466,7 +409,6 @@ int Profiler::getJavaTraceJvmti(jvmtiFrameInfo* jvmti_frames, ASGCT_CallFrame* f
|
||||
return 0;
|
||||
}
|
||||
|
||||
JitWriteProtection jit(false);
|
||||
VMThread* vm_thread = VMThread::fromEnv(jni);
|
||||
int num_frames;
|
||||
if (VMStructs::_get_stack_trace(NULL, vm_thread, 0, max_depth, jvmti_frames, &num_frames) == 0 && num_frames > 0) {
|
||||
@@ -552,21 +494,48 @@ AddressType Profiler::getAddressType(instruction_t* pc) {
|
||||
return ADDR_UNKNOWN;
|
||||
}
|
||||
|
||||
ThreadState Profiler::getThreadState(void* ucontext) {
|
||||
StackFrame frame(ucontext);
|
||||
uintptr_t pc = frame.pc();
|
||||
|
||||
// Consider a thread sleeping, if it has been interrupted in the middle of syscall execution,
|
||||
// either when PC points to the syscall instruction, or if syscall has just returned with EINTR
|
||||
if (StackFrame::isSyscall((instruction_t*)pc)) {
|
||||
return THREAD_SLEEPING;
|
||||
}
|
||||
|
||||
// Make sure the previous instruction address is readable
|
||||
uintptr_t prev_pc = pc - SYSCALL_SIZE;
|
||||
if ((pc & 0xfff) >= SYSCALL_SIZE || findNativeLibrary((instruction_t*)prev_pc) != NULL) {
|
||||
if (StackFrame::isSyscall((instruction_t*)prev_pc) && frame.checkInterruptedSyscall()) {
|
||||
return THREAD_SLEEPING;
|
||||
}
|
||||
}
|
||||
|
||||
return THREAD_RUNNING;
|
||||
}
|
||||
|
||||
void Profiler::recordSample(void* ucontext, u64 counter, jint event_type, Event* event) {
|
||||
atomicInc(_total_samples);
|
||||
|
||||
int tid = OS::threadId();
|
||||
u32 lock_index = getLockIndex(tid);
|
||||
if (!_locks[lock_index].tryLock() &&
|
||||
!_locks[lock_index = (lock_index + 1) % CONCURRENCY_LEVEL].tryLock() &&
|
||||
!_locks[lock_index = (lock_index + 2) % CONCURRENCY_LEVEL].tryLock())
|
||||
while (!_locks[lock_index].tryLock() &&
|
||||
!_locks[lock_index = (lock_index + 1) % CONCURRENCY_LEVEL].tryLock() &&
|
||||
!_locks[lock_index = (lock_index + 2) % CONCURRENCY_LEVEL].tryLock())
|
||||
{
|
||||
if (_engine == &jstack) {
|
||||
// JStack strictly needs all stack traces, but we cannot lock inside a signal handler
|
||||
sched_yield();
|
||||
continue;
|
||||
}
|
||||
|
||||
// Too many concurrent signals already
|
||||
atomicInc(_failures[-ticks_skipped]);
|
||||
|
||||
if (event_type == 0 && _engine == &perf_events) {
|
||||
if (event_type == 0) {
|
||||
// Need to reset PerfEvents ring buffer, even though we discard the collected trace
|
||||
PerfEvents::resetBuffer(tid);
|
||||
_engine->getNativeTrace(ucontext, tid, NULL, 0, &_java_methods, &_runtime_stubs);
|
||||
}
|
||||
return;
|
||||
}
|
||||
@@ -577,12 +546,8 @@ void Profiler::recordSample(void* ucontext, u64 counter, jint event_type, Event*
|
||||
if (!_jfr.active() && event_type <= BCI_ALLOC && event_type >= BCI_PARK && event->id()) {
|
||||
num_frames = makeEventFrame(frames, event_type, event->id());
|
||||
}
|
||||
|
||||
// Use engine stack walker for execution samples, or basic stack walker for other events
|
||||
if (event_type == 0 && _cstack != CSTACK_NO) {
|
||||
num_frames += getNativeTrace(_engine, ucontext, frames + num_frames, tid);
|
||||
} else if (event_type != 0 && _cstack > CSTACK_NO) {
|
||||
num_frames += getNativeTrace(&noop_engine, ucontext, frames + num_frames, tid);
|
||||
if (_cstack != CSTACK_NO) {
|
||||
num_frames += getNativeTrace(ucontext, frames + num_frames, tid);
|
||||
}
|
||||
|
||||
int first_java_frame = num_frames;
|
||||
@@ -669,13 +634,13 @@ void Profiler::bindNativeLibraryLoad(JNIEnv* env, bool enable) {
|
||||
}
|
||||
|
||||
} else {
|
||||
Log::warn("Failed to intercept NativeLibraries.load()");
|
||||
fprintf(stderr, "WARNING: Failed to intercept NativeLibraries.load()\n");
|
||||
return;
|
||||
}
|
||||
|
||||
strcat(original_jni_name, _load_method.name);
|
||||
if ((_original_NativeLibrary_load = dlsym(VM::_libjava, original_jni_name)) == NULL) {
|
||||
Log::warn("Could not find %s", original_jni_name);
|
||||
fprintf(stderr, "WARNING: Could not find %s\n", original_jni_name);
|
||||
return;
|
||||
}
|
||||
|
||||
@@ -684,7 +649,7 @@ void Profiler::bindNativeLibraryLoad(JNIEnv* env, bool enable) {
|
||||
? "jdk/internal/loader/NativeLibraries"
|
||||
: "java/lang/ClassLoader$NativeLibrary";
|
||||
if ((NativeLibrary = env->FindClass(class_name)) == NULL) {
|
||||
Log::warn("Could not find %s", class_name);
|
||||
fprintf(stderr, "WARNING: Could not find %s\n", class_name);
|
||||
return;
|
||||
}
|
||||
}
|
||||
@@ -720,26 +685,30 @@ void Profiler::switchNativeMethodTraps(bool enable) {
|
||||
}
|
||||
|
||||
Error Profiler::installTraps(const char* begin, const char* end) {
|
||||
const void* begin_addr = NULL;
|
||||
if (begin != NULL && (begin_addr = resolveSymbol(begin)) == NULL) {
|
||||
return Error("Begin address not found");
|
||||
if (begin == NULL) {
|
||||
_begin_trap.assign(NULL);
|
||||
} else {
|
||||
const void* begin_addr = resolveSymbol(begin);
|
||||
if (begin_addr == NULL || !_begin_trap.assign(begin_addr)) {
|
||||
return Error("Begin address not found");
|
||||
}
|
||||
}
|
||||
|
||||
const void* end_addr = NULL;
|
||||
if (end != NULL && (end_addr = resolveSymbol(end)) == NULL) {
|
||||
return Error("End address not found");
|
||||
if (end == NULL) {
|
||||
_end_trap.assign(NULL);
|
||||
} else {
|
||||
const void* end_addr = resolveSymbol(end);
|
||||
if (end_addr == NULL || !_end_trap.assign(end_addr)) {
|
||||
return Error("End address not found");
|
||||
}
|
||||
}
|
||||
|
||||
_begin_trap.assign(begin_addr);
|
||||
_end_trap.assign(end_addr);
|
||||
|
||||
if (_begin_trap.entry() == 0) {
|
||||
_engine->enableEvents(true);
|
||||
} else {
|
||||
_engine->enableEvents(false);
|
||||
if (!_begin_trap.install()) {
|
||||
return Error("Cannot install begin breakpoint");
|
||||
}
|
||||
OS::installSignalHandler(SIGTRAP, trapHandler);
|
||||
_begin_trap.install();
|
||||
}
|
||||
|
||||
return Error::OK;
|
||||
@@ -751,6 +720,10 @@ void Profiler::uninstallTraps() {
|
||||
}
|
||||
|
||||
void Profiler::trapHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
_instance.trapHandlerImpl(ucontext);
|
||||
}
|
||||
|
||||
void Profiler::trapHandlerImpl(void* ucontext) {
|
||||
StackFrame frame(ucontext);
|
||||
|
||||
if (_begin_trap.covers(frame.pc())) {
|
||||
@@ -763,15 +736,6 @@ void Profiler::trapHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
_end_trap.uninstall();
|
||||
_begin_trap.install();
|
||||
frame.pc() = _end_trap.entry();
|
||||
} else if (_orig_trapHandler != NULL) {
|
||||
_orig_trapHandler(signo, siginfo, ucontext);
|
||||
}
|
||||
}
|
||||
|
||||
void Profiler::setupTrapHandler() {
|
||||
_orig_trapHandler = OS::installSignalHandler(SIGTRAP, AllocTracer::trapHandler);
|
||||
if (_orig_trapHandler == (void*)SIG_DFL || _orig_trapHandler == (void*)SIG_IGN) {
|
||||
_orig_trapHandler = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
@@ -782,8 +746,7 @@ void Profiler::setThreadInfo(int tid, const char* name, jlong java_thread_id) {
|
||||
}
|
||||
|
||||
void Profiler::updateThreadName(jvmtiEnv* jvmti, JNIEnv* jni, jthread thread) {
|
||||
if (_update_thread_names && VMThread::hasNativeId()) {
|
||||
JitWriteProtection jit(true); // workaround for JDK-8262896
|
||||
if (_update_thread_names) {
|
||||
VMThread* vm_thread = VMThread::fromJavaThread(jni, thread);
|
||||
jvmtiThreadInfo thread_info;
|
||||
if (vm_thread != NULL && jvmti->GetThreadInfo(thread, &thread_info) == 0) {
|
||||
@@ -795,7 +758,7 @@ void Profiler::updateThreadName(jvmtiEnv* jvmti, JNIEnv* jni, jthread thread) {
|
||||
}
|
||||
|
||||
void Profiler::updateJavaThreadNames() {
|
||||
if (_update_thread_names && VMThread::hasNativeId()) {
|
||||
if (_update_thread_names) {
|
||||
jvmtiEnv* jvmti = VM::jvmti();
|
||||
jint thread_count;
|
||||
jthread* thread_objects;
|
||||
@@ -857,28 +820,23 @@ Engine* Profiler::selectEngine(const char* event_name) {
|
||||
return &noop_engine;
|
||||
} else if (strcmp(event_name, EVENT_CPU) == 0) {
|
||||
return PerfEvents::supported() ? (Engine*)&perf_events : (Engine*)&wall_clock;
|
||||
} else if (strcmp(event_name, EVENT_ALLOC) == 0) {
|
||||
return &alloc_tracer;
|
||||
} else if (strcmp(event_name, EVENT_LOCK) == 0) {
|
||||
return &lock_tracer;
|
||||
} else if (strcmp(event_name, EVENT_WALL) == 0) {
|
||||
return &wall_clock;
|
||||
} else if (strcmp(event_name, EVENT_ITIMER) == 0) {
|
||||
return &itimer;
|
||||
} else if (strchr(event_name, '.') != NULL && strchr(event_name, ':') == NULL) {
|
||||
} else if (strcmp(event_name, EVENT_JSTACK) == 0) {
|
||||
return &jstack;
|
||||
} else if (strchr(event_name, '.') != NULL) {
|
||||
return &instrument;
|
||||
} else {
|
||||
return &perf_events;
|
||||
}
|
||||
}
|
||||
|
||||
Engine* Profiler::activeEngine() {
|
||||
switch (_event_mask) {
|
||||
case EM_ALLOC:
|
||||
return &alloc_tracer;
|
||||
case EM_LOCK:
|
||||
return &lock_tracer;
|
||||
default:
|
||||
return _engine;
|
||||
}
|
||||
}
|
||||
|
||||
Error Profiler::checkJvmCapabilities() {
|
||||
if (VMStructs::libjvm() == NULL) {
|
||||
return Error("Could not find libjvm among loaded libraries. Unsupported JVM?");
|
||||
@@ -889,7 +847,7 @@ Error Profiler::checkJvmCapabilities() {
|
||||
}
|
||||
|
||||
if (VMStructs::_get_stack_trace == NULL) {
|
||||
Log::warn("Install JVM debug symbols to improve profile accuracy");
|
||||
fprintf(stderr, "WARNING: Install JVM debug symbols to improve profile accuracy\n");
|
||||
}
|
||||
|
||||
return Error::OK;
|
||||
@@ -906,12 +864,9 @@ Error Profiler::start(Arguments& args, bool reset) {
|
||||
return error;
|
||||
}
|
||||
|
||||
_event_mask = (args._event != NULL ? EM_CPU : 0) |
|
||||
(args._alloc > 0 ? EM_ALLOC : 0) |
|
||||
(args._lock > 0 ? EM_LOCK : 0);
|
||||
if (_event_mask == 0) {
|
||||
if (args._events == 0) {
|
||||
return Error("No profiling events specified");
|
||||
} else if ((_event_mask & (_event_mask - 1)) && args._output != OUTPUT_JFR) {
|
||||
} else if ((args._events & (args._events - 1)) && args._output != OUTPUT_JFR) {
|
||||
return Error("Only JFR output supports multiple events");
|
||||
}
|
||||
|
||||
@@ -948,18 +903,14 @@ Error Profiler::start(Arguments& args, bool reset) {
|
||||
|
||||
updateSymbols(args._ring != RING_USER);
|
||||
|
||||
_safe_mode = args._safe_mode;
|
||||
if (VM::hotspot_version() < 8) {
|
||||
// Cannot use JVM TI stack walker during GC on non-HotSpot JVMs or with PermGen
|
||||
_safe_mode |= GC_TRACES | LAST_JAVA_PC;
|
||||
}
|
||||
_safe_mode = args._safe_mode | (VM::hotspot_version() ? 0 : HOTSPOT_ONLY);
|
||||
|
||||
_add_thread_frame = args._threads && args._output != OUTPUT_JFR;
|
||||
_update_thread_names = args._threads || args._output == OUTPUT_JFR;
|
||||
_update_thread_names = (args._threads || args._output == OUTPUT_JFR) && VMThread::hasNativeId();
|
||||
_thread_filter.init(args._filter);
|
||||
|
||||
_engine = selectEngine(args._event);
|
||||
_cstack = args._cstack;
|
||||
_engine = selectEngine(args._event_desc);
|
||||
_cstack = args._cstack == CSTACK_DEFAULT ? _engine->cstack() : args._cstack;
|
||||
if (_cstack == CSTACK_LBR && _engine != &perf_events) {
|
||||
return Error("Branch stack is supported only with PMU events");
|
||||
}
|
||||
@@ -979,42 +930,25 @@ Error Profiler::start(Arguments& args, bool reset) {
|
||||
|
||||
error = _engine->start(args);
|
||||
if (error) {
|
||||
goto error1;
|
||||
uninstallTraps();
|
||||
_jfr.stop();
|
||||
return error;
|
||||
}
|
||||
|
||||
if (_event_mask & EM_ALLOC) {
|
||||
error = alloc_tracer.start(args);
|
||||
if (error) {
|
||||
goto error2;
|
||||
}
|
||||
}
|
||||
if (_event_mask & EM_LOCK) {
|
||||
error = lock_tracer.start(args);
|
||||
if (error) {
|
||||
goto error3;
|
||||
}
|
||||
}
|
||||
// TODO: check if engines available
|
||||
_events = args._events;
|
||||
if (_events & EK_ALLOC) alloc_tracer.start(args);
|
||||
if (_events & EK_LOCK) lock_tracer.start(args);
|
||||
|
||||
// Thread events might be already enabled by PerfEvents::start
|
||||
switchThreadEvents(JVMTI_ENABLE);
|
||||
switchNativeMethodTraps(true);
|
||||
if (_engine != &jstack) {
|
||||
// Thread events might be already enabled by PerfEvents::start
|
||||
switchThreadEvents(JVMTI_ENABLE);
|
||||
switchNativeMethodTraps(true);
|
||||
}
|
||||
|
||||
_state = RUNNING;
|
||||
_start_time = time(NULL);
|
||||
return Error::OK;
|
||||
|
||||
error3:
|
||||
if (_event_mask & EM_ALLOC) alloc_tracer.stop();
|
||||
|
||||
error2:
|
||||
_engine->stop();
|
||||
|
||||
error1:
|
||||
uninstallTraps();
|
||||
for (int i = 0; i < CONCURRENCY_LEVEL; i++) _locks[i].lock();
|
||||
_jfr.stop();
|
||||
for (int i = 0; i < CONCURRENCY_LEVEL; i++) _locks[i].unlock();
|
||||
return error;
|
||||
}
|
||||
|
||||
Error Profiler::stop() {
|
||||
@@ -1025,13 +959,16 @@ Error Profiler::stop() {
|
||||
|
||||
uninstallTraps();
|
||||
|
||||
if (_event_mask & EM_LOCK) lock_tracer.stop();
|
||||
if (_event_mask & EM_ALLOC) alloc_tracer.stop();
|
||||
if (_events & EK_LOCK) lock_tracer.stop();
|
||||
if (_events & EK_ALLOC) alloc_tracer.stop();
|
||||
|
||||
_engine->stop();
|
||||
|
||||
switchNativeMethodTraps(false);
|
||||
switchThreadEvents(JVMTI_DISABLE);
|
||||
if (_engine != &jstack) {
|
||||
switchNativeMethodTraps(false);
|
||||
switchThreadEvents(JVMTI_DISABLE);
|
||||
}
|
||||
|
||||
updateJavaThreadNames();
|
||||
updateNativeThreadNames();
|
||||
|
||||
@@ -1055,7 +992,7 @@ Error Profiler::check(Arguments& args) {
|
||||
return error;
|
||||
}
|
||||
|
||||
_engine = selectEngine(args._event);
|
||||
_engine = selectEngine(args._event_desc);
|
||||
return _engine->check(args);
|
||||
}
|
||||
|
||||
@@ -1079,8 +1016,8 @@ void Profiler::dump(std::ostream& out, Arguments& args) {
|
||||
case OUTPUT_TREE:
|
||||
dumpFlameGraph(out, args, true);
|
||||
break;
|
||||
case OUTPUT_TEXT:
|
||||
dumpText(out, args);
|
||||
case OUTPUT_FLAT:
|
||||
dumpFlat(out, args);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
@@ -1117,17 +1054,7 @@ void Profiler::dumpFlameGraph(std::ostream& out, Arguments& args, bool tree) {
|
||||
MutexLocker ml(_state_lock);
|
||||
if (_state != IDLE || _engine == NULL) return;
|
||||
|
||||
char title[64];
|
||||
if (args._title == NULL) {
|
||||
Engine* active_engine = activeEngine();
|
||||
if (args._counter == COUNTER_SAMPLES) {
|
||||
strcpy(title, active_engine->title());
|
||||
} else {
|
||||
sprintf(title, "%s (%s)", active_engine->title(), active_engine->units());
|
||||
}
|
||||
}
|
||||
|
||||
FlameGraph flamegraph(args._title == NULL ? title : args._title, args._counter, args._minwidth, args._reverse);
|
||||
FlameGraph flamegraph(args._title, args._counter, args._minwidth, args._reverse);
|
||||
FrameName fn(args, args._style, _thread_names_lock, _thread_names);
|
||||
|
||||
std::vector<CallTraceSample*> samples;
|
||||
@@ -1165,118 +1092,91 @@ void Profiler::dumpFlameGraph(std::ostream& out, Arguments& args, bool tree) {
|
||||
flamegraph.dump(out, tree);
|
||||
}
|
||||
|
||||
void Profiler::dumpText(std::ostream& out, Arguments& args) {
|
||||
void Profiler::dumpFlat(std::ostream& out, Arguments& args) {
|
||||
MutexLocker ml(_state_lock);
|
||||
if (_state != IDLE || _engine == NULL) return;
|
||||
|
||||
FrameName fn(args, args._style | STYLE_DOTTED, _thread_names_lock, _thread_names);
|
||||
char buf[1024] = {0};
|
||||
|
||||
std::vector<CallTraceSample> samples;
|
||||
std::map<std::string, MethodSample> histogram;
|
||||
u64 total_counter = 0;
|
||||
{
|
||||
std::map<u64, CallTraceSample> map;
|
||||
_call_trace_storage.collectSamples(map);
|
||||
samples.reserve(map.size());
|
||||
|
||||
for (std::map<u64, CallTraceSample>::const_iterator it = map.begin(); it != map.end(); ++it) {
|
||||
total_counter += it->second.counter;
|
||||
CallTrace* trace = it->second.trace;
|
||||
if (trace->num_frames == 0 || excludeTrace(&fn, trace)) continue;
|
||||
samples.push_back(it->second);
|
||||
}
|
||||
std::vector<CallTraceSample*> samples;
|
||||
_call_trace_storage.collectSamples(samples);
|
||||
|
||||
for (std::vector<CallTraceSample*>::const_iterator it = samples.begin(); it != samples.end(); ++it) {
|
||||
total_counter += (*it)->counter;
|
||||
|
||||
CallTrace* trace = (*it)->trace;
|
||||
if (trace->num_frames == 0 || excludeTrace(&fn, trace)) continue;
|
||||
|
||||
const char* frame_name = fn.name(trace->frames[0]);
|
||||
histogram[frame_name].add(*it);
|
||||
}
|
||||
|
||||
// Print summary
|
||||
std::vector<NamedMethodSample> methods(histogram.begin(), histogram.end());
|
||||
std::sort(methods.begin(), methods.end(), sortByCounter);
|
||||
|
||||
snprintf(buf, sizeof(buf) - 1,
|
||||
"--- Execution profile ---\n"
|
||||
"Total samples : %lld\n",
|
||||
_total_samples);
|
||||
out << buf;
|
||||
|
||||
double spercent = 100.0 / _total_samples;
|
||||
double percent = 100.0 / _total_samples;
|
||||
for (int i = 1; i < ASGCT_FAILURE_TYPES; i++) {
|
||||
const char* err_string = asgctError(-i);
|
||||
if (err_string != NULL && _failures[i] > 0) {
|
||||
snprintf(buf, sizeof(buf), "%-20s: %lld (%.2f%%)\n", err_string, _failures[i], _failures[i] * spercent);
|
||||
snprintf(buf, sizeof(buf), "%-20s: %lld (%.2f%%)\n", err_string, _failures[i], _failures[i] * percent);
|
||||
out << buf;
|
||||
}
|
||||
}
|
||||
out << std::endl;
|
||||
|
||||
double cpercent = 100.0 / total_counter;
|
||||
const char* units_str = activeEngine()->units();
|
||||
out << "\n"
|
||||
" counter percent samples top\n"
|
||||
" ---------- ------- ------- ---\n";
|
||||
|
||||
// Print top call stacks
|
||||
if (args._dump_traces > 0) {
|
||||
std::sort(samples.begin(), samples.end());
|
||||
|
||||
int max_count = args._dump_traces;
|
||||
for (std::vector<CallTraceSample>::const_iterator it = samples.begin(); it != samples.end() && --max_count >= 0; ++it) {
|
||||
snprintf(buf, sizeof(buf) - 1, "--- %lld %s (%.2f%%), %lld sample%s\n",
|
||||
it->counter, units_str, it->counter * cpercent,
|
||||
it->samples, it->samples == 1 ? "" : "s");
|
||||
out << buf;
|
||||
|
||||
CallTrace* trace = it->trace;
|
||||
for (int j = 0; j < trace->num_frames; j++) {
|
||||
const char* frame_name = fn.name(trace->frames[j]);
|
||||
snprintf(buf, sizeof(buf) - 1, " [%2d] %s\n", j, frame_name);
|
||||
out << buf;
|
||||
}
|
||||
out << "\n";
|
||||
}
|
||||
}
|
||||
|
||||
// Print top methods
|
||||
if (args._dump_flat > 0) {
|
||||
std::map<std::string, MethodSample> histogram;
|
||||
for (std::vector<CallTraceSample>::const_iterator it = samples.begin(); it != samples.end(); ++it) {
|
||||
const char* frame_name = fn.name(it->trace->frames[0]);
|
||||
histogram[frame_name].add(it->samples, it->counter);
|
||||
}
|
||||
|
||||
std::vector<NamedMethodSample> methods(histogram.begin(), histogram.end());
|
||||
std::sort(methods.begin(), methods.end(), sortByCounter);
|
||||
|
||||
snprintf(buf, sizeof(buf) - 1, "%12s percent samples top\n"
|
||||
" ---------- ------- ------- ---\n", units_str);
|
||||
percent = 100.0 / total_counter;
|
||||
int max_count = args._dump_flat;
|
||||
for (std::vector<NamedMethodSample>::const_iterator it = methods.begin(); it != methods.end() && --max_count >= 0; ++it) {
|
||||
snprintf(buf, sizeof(buf) - 1, "%12lld %6.2f%% %7lld %s\n",
|
||||
it->second.counter, it->second.counter * percent, it->second.samples, it->first.c_str());
|
||||
out << buf;
|
||||
|
||||
int max_count = args._dump_flat;
|
||||
for (std::vector<NamedMethodSample>::const_iterator it = methods.begin(); it != methods.end() && --max_count >= 0; ++it) {
|
||||
snprintf(buf, sizeof(buf) - 1, "%12lld %6.2f%% %7lld %s\n",
|
||||
it->second.counter, it->second.counter * cpercent, it->second.samples, it->first.c_str());
|
||||
out << buf;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Error Profiler::runInternal(Arguments& args, std::ostream& out) {
|
||||
void Profiler::runInternal(Arguments& args, std::ostream& out) {
|
||||
switch (args._action) {
|
||||
case ACTION_START:
|
||||
case ACTION_RESUME: {
|
||||
Error error = start(args, args._action == ACTION_START);
|
||||
if (error) {
|
||||
return error;
|
||||
out << error.message() << std::endl;
|
||||
} else if (_engine == &jstack) {
|
||||
stop();
|
||||
dump(out, args);
|
||||
} else {
|
||||
out << "Profiling started" << std::endl;
|
||||
}
|
||||
out << "Profiling started" << std::endl;
|
||||
break;
|
||||
}
|
||||
case ACTION_STOP: {
|
||||
Error error = stop();
|
||||
if (error) {
|
||||
return error;
|
||||
out << error.message() << std::endl;
|
||||
} else {
|
||||
out << "Profiling stopped after " << uptime() << " seconds. No dump options specified" << std::endl;
|
||||
}
|
||||
out << "Profiling stopped after " << uptime() << " seconds. No dump options specified" << std::endl;
|
||||
break;
|
||||
}
|
||||
case ACTION_CHECK: {
|
||||
Error error = check(args);
|
||||
if (error) {
|
||||
return error;
|
||||
out << error.message() << std::endl;
|
||||
} else {
|
||||
out << "OK" << std::endl;
|
||||
}
|
||||
out << "OK" << std::endl;
|
||||
break;
|
||||
}
|
||||
case ACTION_STATUS: {
|
||||
@@ -1324,20 +1224,19 @@ Error Profiler::runInternal(Arguments& args, std::ostream& out) {
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return Error::OK;
|
||||
}
|
||||
|
||||
Error Profiler::run(Arguments& args) {
|
||||
if (!args.hasOutputFile()) {
|
||||
return runInternal(args, std::cout);
|
||||
void Profiler::run(Arguments& args) {
|
||||
if (args._file == NULL || args._output == OUTPUT_JFR) {
|
||||
runInternal(args, std::cout);
|
||||
} else {
|
||||
std::ofstream out(args._file, std::ios::out | std::ios::trunc);
|
||||
if (!out.is_open()) {
|
||||
return Error("Could not open output file");
|
||||
if (out.is_open()) {
|
||||
runInternal(args, out);
|
||||
out.close();
|
||||
} else {
|
||||
std::cerr << "Could not open " << args._file << std::endl;
|
||||
}
|
||||
Error error = runInternal(args, out);
|
||||
out.close();
|
||||
return error;
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1346,10 +1245,11 @@ void Profiler::shutdown(Arguments& args) {
|
||||
|
||||
// The last chance to dump profile before VM terminates
|
||||
if (_state == RUNNING) {
|
||||
args._action = ACTION_DUMP;
|
||||
Error error = args._output == OUTPUT_NONE ? stop() : run(args);
|
||||
if (error) {
|
||||
Log::error(error.message());
|
||||
if (args._output == OUTPUT_NONE) {
|
||||
stop();
|
||||
} else {
|
||||
args._action = ACTION_DUMP;
|
||||
run(args);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@@ -83,7 +83,7 @@ class Profiler {
|
||||
CallTraceStorage _call_trace_storage;
|
||||
FlightRecorder _jfr;
|
||||
Engine* _engine;
|
||||
int _event_mask;
|
||||
int _events;
|
||||
time_t _start_time;
|
||||
|
||||
u64 _total_samples;
|
||||
@@ -120,9 +120,10 @@ class Profiler {
|
||||
|
||||
void switchNativeMethodTraps(bool enable);
|
||||
|
||||
void (*_orig_trapHandler)(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
Error installTraps(const char* begin, const char* end);
|
||||
void uninstallTraps();
|
||||
static void trapHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
void trapHandlerImpl(void* ucontext);
|
||||
|
||||
void addJavaMethod(const void* address, int length, jmethodID method);
|
||||
void removeJavaMethod(const void* address, jmethodID method);
|
||||
@@ -133,8 +134,7 @@ class Profiler {
|
||||
|
||||
const char* asgctError(int code);
|
||||
u32 getLockIndex(int tid);
|
||||
bool inJavaCode(void* ucontext);
|
||||
int getNativeTrace(Engine* engine, void* ucontext, ASGCT_CallFrame* frames, int tid);
|
||||
int getNativeTrace(void* ucontext, ASGCT_CallFrame* frames, int tid);
|
||||
int getJavaTraceAsync(void* ucontext, ASGCT_CallFrame* frames, int max_depth);
|
||||
int getJavaTraceJvmti(jvmtiFrameInfo* jvmti_frames, ASGCT_CallFrame* frames, int max_depth);
|
||||
int makeEventFrame(ASGCT_CallFrame* frames, jint event_type, uintptr_t id);
|
||||
@@ -147,7 +147,6 @@ class Profiler {
|
||||
bool excludeTrace(FrameName* fn, CallTrace* trace);
|
||||
void mangle(const char* name, char* buf, size_t size);
|
||||
Engine* selectEngine(const char* event_name);
|
||||
Engine* activeEngine();
|
||||
Error checkJvmCapabilities();
|
||||
|
||||
public:
|
||||
@@ -155,8 +154,8 @@ class Profiler {
|
||||
|
||||
Profiler() :
|
||||
_state(IDLE),
|
||||
_begin_trap(2),
|
||||
_end_trap(3),
|
||||
_begin_trap(),
|
||||
_end_trap(),
|
||||
_thread_filter(),
|
||||
_call_trace_storage(),
|
||||
_jfr(),
|
||||
@@ -182,8 +181,8 @@ class Profiler {
|
||||
Dictionary* classMap() { return &_class_map; }
|
||||
ThreadFilter* threadFilter() { return &_thread_filter; }
|
||||
|
||||
Error run(Arguments& args);
|
||||
Error runInternal(Arguments& args, std::ostream& out);
|
||||
void run(Arguments& args);
|
||||
void runInternal(Arguments& args, std::ostream& out);
|
||||
void shutdown(Arguments& args);
|
||||
Error check(Arguments& args);
|
||||
Error start(Arguments& args, bool reset);
|
||||
@@ -192,17 +191,14 @@ class Profiler {
|
||||
void dump(std::ostream& out, Arguments& args);
|
||||
void dumpCollapsed(std::ostream& out, Arguments& args);
|
||||
void dumpFlameGraph(std::ostream& out, Arguments& args, bool tree);
|
||||
void dumpText(std::ostream& out, Arguments& args);
|
||||
void dumpFlat(std::ostream& out, Arguments& args);
|
||||
ThreadState getThreadState(void* ucontext);
|
||||
void recordSample(void* ucontext, u64 counter, jint event_type, Event* event);
|
||||
|
||||
void updateSymbols(bool kernel_symbols);
|
||||
const void* resolveSymbol(const char* name);
|
||||
NativeCodeCache* findNativeLibrary(const void* address);
|
||||
const char* findNativeMethod(const void* address);
|
||||
void resetJavaMethods();
|
||||
|
||||
void trapHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
void setupTrapHandler();
|
||||
|
||||
// CompiledMethodLoad is also needed to enable DebugNonSafepoints info by default
|
||||
static void JNICALL CompiledMethodLoad(jvmtiEnv* jvmti, jmethodID method,
|
||||
|
||||
@@ -71,6 +71,10 @@ class StackFrame {
|
||||
// 0 = do not use stack snooping heuristics.
|
||||
static int callerLookupSlots();
|
||||
|
||||
// Check if PC looks like a valid return address (i.e. the previous instruction is a CALL).
|
||||
// It's safe to return false to skip return address heuristics.
|
||||
static bool isReturnAddress(instruction_t* pc);
|
||||
|
||||
// Check if PC points to a syscall instruction
|
||||
static bool isSyscall(instruction_t* pc);
|
||||
};
|
||||
|
||||
@@ -1,5 +1,6 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
* Copyright 2017 Andrei Pangin
|
||||
* Copyright 2017 BellSoft LLC
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
@@ -12,107 +13,85 @@
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*
|
||||
* Author: Dmitry Samersoff
|
||||
*/
|
||||
|
||||
#ifdef __aarch64__
|
||||
#if defined(__aarch64__)
|
||||
|
||||
#include <errno.h>
|
||||
#include <sys/syscall.h>
|
||||
#include "stackFrame.h"
|
||||
|
||||
|
||||
#ifdef __APPLE__
|
||||
# define REG(l, m) _ucontext->uc_mcontext->__ss.__##m
|
||||
#else
|
||||
# define REG(l, m) _ucontext->uc_mcontext.l
|
||||
#endif
|
||||
|
||||
#define REG_FP 29
|
||||
#define REG_LR 30
|
||||
|
||||
uintptr_t& StackFrame::pc() {
|
||||
return (uintptr_t&)REG(pc, pc);
|
||||
return (uintptr_t&)_ucontext->uc_mcontext.pc;
|
||||
}
|
||||
|
||||
uintptr_t& StackFrame::sp() {
|
||||
return (uintptr_t&)REG(sp, sp);
|
||||
return (uintptr_t&)_ucontext->uc_mcontext.sp;
|
||||
}
|
||||
|
||||
uintptr_t& StackFrame::fp() {
|
||||
return (uintptr_t&)REG(regs[29], fp);
|
||||
return (uintptr_t&)_ucontext->uc_mcontext.regs[REG_FP];
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::retval() {
|
||||
return (uintptr_t)REG(regs[0], x[0]);
|
||||
return (uintptr_t)_ucontext->uc_mcontext.regs[0];
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::arg0() {
|
||||
return (uintptr_t)REG(regs[0], x[0]);
|
||||
return (uintptr_t)_ucontext->uc_mcontext.regs[0];
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::arg1() {
|
||||
return (uintptr_t)REG(regs[1], x[1]);
|
||||
return (uintptr_t)_ucontext->uc_mcontext.regs[1];
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::arg2() {
|
||||
return (uintptr_t)REG(regs[2], x[2]);
|
||||
return (uintptr_t)_ucontext->uc_mcontext.regs[2];
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::arg3() {
|
||||
return (uintptr_t)REG(regs[3], x[3]);
|
||||
return (uintptr_t)_ucontext->uc_mcontext.regs[3];
|
||||
}
|
||||
|
||||
void StackFrame::ret() {
|
||||
pc() = REG(regs[30], lr);
|
||||
_ucontext->uc_mcontext.pc = _ucontext->uc_mcontext.regs[REG_LR];
|
||||
}
|
||||
|
||||
|
||||
bool StackFrame::pop(bool trust_frame_pointer) {
|
||||
if (trust_frame_pointer && withinCurrentStack(fp())) {
|
||||
sp() = fp() + 16;
|
||||
fp() = stackAt(-2);
|
||||
pc() = stackAt(-1);
|
||||
return true;
|
||||
} else if (fp() == sp()) {
|
||||
if (fp() == sp()) {
|
||||
// Expected frame layout:
|
||||
// sp 000000nnnnnnnnnn [stack]
|
||||
// sp+8 000000nnnnnnnnnn [link]
|
||||
fp() = stackAt(0);
|
||||
pc() = stackAt(1);
|
||||
sp() += 16;
|
||||
return true;
|
||||
} else {
|
||||
// Hope LR holds correct value
|
||||
pc() = _ucontext->uc_mcontext.regs[REG_LR];
|
||||
}
|
||||
|
||||
instruction_t insn = *(instruction_t*)pc();
|
||||
if ((insn & 0xffe07fff) == 0xa9007bfd) {
|
||||
// stp x29, x30, [sp, #offset]
|
||||
// SP has been adjusted, but FP not yet stored in a new frame
|
||||
unsigned int offset = (insn >> 12) & 0x1f8;
|
||||
sp() += offset + 16;
|
||||
}
|
||||
ret();
|
||||
return true;
|
||||
}
|
||||
|
||||
bool StackFrame::checkInterruptedSyscall() {
|
||||
#ifdef __APPLE__
|
||||
// We are not interested in syscalls that do not check error code, e.g. semaphore_wait_trap
|
||||
if (*(instruction_t*)pc() == 0xd65f03c0) {
|
||||
return true;
|
||||
}
|
||||
// If carry flag is set, the error code is in low byte of x0
|
||||
if (REG(pstate, cpsr) & (1 << 29)) {
|
||||
return (retval() & 0xff) == EINTR || (retval() & 0xff) == ETIMEDOUT;
|
||||
} else {
|
||||
return retval() == (uintptr_t)-EINTR;
|
||||
}
|
||||
#else
|
||||
return retval() == (uintptr_t)-EINTR;
|
||||
#endif
|
||||
}
|
||||
|
||||
int StackFrame::callerLookupSlots() {
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool StackFrame::isSyscall(instruction_t* pc) {
|
||||
// svc #0 or svc #80
|
||||
return (*pc & 0xffffefff) == 0xd4000001;
|
||||
bool StackFrame::isReturnAddress(instruction_t* pc) {
|
||||
return false;
|
||||
}
|
||||
|
||||
#endif // __aarch64__
|
||||
bool StackFrame::isSyscall(instruction_t* pc) {
|
||||
// svc #0
|
||||
return *pc == 0xd4000001;
|
||||
}
|
||||
|
||||
#endif // defined(__aarch64__)
|
||||
|
||||
@@ -68,6 +68,10 @@ int StackFrame::callerLookupSlots() {
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool StackFrame::isReturnAddress(instruction_t* pc) {
|
||||
return false;
|
||||
}
|
||||
|
||||
bool StackFrame::isSyscall(instruction_t* pc) {
|
||||
// swi #0
|
||||
return *pc == 0xef000000;
|
||||
|
||||
@@ -80,6 +80,17 @@ int StackFrame::callerLookupSlots() {
|
||||
return 7;
|
||||
}
|
||||
|
||||
bool StackFrame::isReturnAddress(instruction_t* pc) {
|
||||
if (pc[-5] == 0xe8) {
|
||||
// call rel32
|
||||
return true;
|
||||
} else if (pc[-2] == 0xff && ((pc[-1] & 0xf0) == 0xd0 || (pc[-1] & 0xf0) == 0x10)) {
|
||||
// call reg or call [reg]
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool StackFrame::isSyscall(instruction_t* pc) {
|
||||
// int 0x80
|
||||
return pc[0] == 0xcd && pc[1] == 0x80;
|
||||
|
||||
@@ -22,42 +22,42 @@
|
||||
|
||||
|
||||
#ifdef __APPLE__
|
||||
# define REG(l, m) _ucontext->uc_mcontext->__ss.__##m
|
||||
# define REG(l, m) _ucontext->uc_mcontext->__ss.m
|
||||
#else
|
||||
# define REG(l, m) _ucontext->uc_mcontext.gregs[REG_##l]
|
||||
# define REG(l, m) _ucontext->uc_mcontext.gregs[l]
|
||||
#endif
|
||||
|
||||
|
||||
uintptr_t& StackFrame::pc() {
|
||||
return (uintptr_t&)REG(RIP, rip);
|
||||
return (uintptr_t&)REG(REG_RIP, __rip);
|
||||
}
|
||||
|
||||
uintptr_t& StackFrame::sp() {
|
||||
return (uintptr_t&)REG(RSP, rsp);
|
||||
return (uintptr_t&)REG(REG_RSP, __rsp);
|
||||
}
|
||||
|
||||
uintptr_t& StackFrame::fp() {
|
||||
return (uintptr_t&)REG(RBP, rbp);
|
||||
return (uintptr_t&)REG(REG_RBP, __rbp);
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::retval() {
|
||||
return (uintptr_t)REG(RAX, rax);
|
||||
return (uintptr_t)REG(REG_RAX, __rax);
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::arg0() {
|
||||
return (uintptr_t)REG(RDI, rdi);
|
||||
return (uintptr_t)REG(REG_RDI, __rdi);
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::arg1() {
|
||||
return (uintptr_t)REG(RSI, rsi);
|
||||
return (uintptr_t)REG(REG_RSI, __rsi);
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::arg2() {
|
||||
return (uintptr_t)REG(RDX, rdx);
|
||||
return (uintptr_t)REG(REG_RDX, __rdx);
|
||||
}
|
||||
|
||||
uintptr_t StackFrame::arg3() {
|
||||
return (uintptr_t)REG(RCX, rcx);
|
||||
return (uintptr_t)REG(REG_RCX, __rcx);
|
||||
}
|
||||
|
||||
void StackFrame::ret() {
|
||||
@@ -113,7 +113,7 @@ bool StackFrame::checkInterruptedSyscall() {
|
||||
}
|
||||
// If CF is set, the error code is in low byte of eax,
|
||||
// some other syscalls (ulock_wait) do not set CF when interrupted
|
||||
if (REG(EFL, rflags) & 1) {
|
||||
if (REG(REG_EFL, __rflags) & 1) {
|
||||
return (retval() & 0xff) == EINTR || (retval() & 0xff) == ETIMEDOUT;
|
||||
} else {
|
||||
return retval() == (uintptr_t)-EINTR;
|
||||
@@ -138,6 +138,17 @@ int StackFrame::callerLookupSlots() {
|
||||
return 7;
|
||||
}
|
||||
|
||||
bool StackFrame::isReturnAddress(instruction_t* pc) {
|
||||
if (pc[-5] == 0xe8) {
|
||||
// call rel32
|
||||
return true;
|
||||
} else if (pc[-2] == 0xff && ((pc[-1] & 0xf0) == 0xd0 || (pc[-1] & 0xf0) == 0x10)) {
|
||||
// call reg or call [reg]
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool StackFrame::isSyscall(instruction_t* pc) {
|
||||
return pc[0] == 0x0f && pc[1] == 0x05;
|
||||
}
|
||||
|
||||
@@ -32,7 +32,6 @@
|
||||
#include <string>
|
||||
#include "symbols.h"
|
||||
#include "arch.h"
|
||||
#include "log.h"
|
||||
|
||||
|
||||
class SymbolDesc {
|
||||
@@ -175,7 +174,12 @@ bool ElfParser::parseFile(NativeCodeCache* cc, const char* base, const char* fil
|
||||
close(fd);
|
||||
|
||||
if (addr == MAP_FAILED) {
|
||||
Log::warn("Could not parse symbols from %s: %s", file_name, strerror(errno));
|
||||
if (strcmp(file_name, "/") == 0) {
|
||||
// https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1843018
|
||||
fprintf(stderr, "Could not parse symbols due to the OS bug\n");
|
||||
} else {
|
||||
fprintf(stderr, "Could not parse symbols from %s: %s\n", file_name, strerror(errno));
|
||||
}
|
||||
} else {
|
||||
ElfParser elf(cc, base, addr, file_name);
|
||||
elf.loadSymbols(use_debug);
|
||||
@@ -303,10 +307,7 @@ void ElfParser::loadSymbolTable(ElfSection* symtab) {
|
||||
for (; symbols < symbols_end; symbols += symtab->sh_entsize) {
|
||||
ElfSymbol* sym = (ElfSymbol*)symbols;
|
||||
if (sym->st_name != 0 && sym->st_value != 0) {
|
||||
// Skip special AArch64 mapping symbols: $x and $d
|
||||
if (sym->st_size != 0 || sym->st_info != 0 || strings[sym->st_name] != '$') {
|
||||
_cc->add(_base + sym->st_value, (int)sym->st_size, strings + sym->st_name);
|
||||
}
|
||||
_cc->add(_base + sym->st_value, (int)sym->st_size, strings + sym->st_name);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
/*
|
||||
* Copyright 2021 Andrei Pangin
|
||||
* Copyright 2017 Andrei Pangin
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
@@ -16,14 +16,18 @@
|
||||
|
||||
#ifdef __APPLE__
|
||||
|
||||
#include <dlfcn.h>
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
#include <unistd.h>
|
||||
#include <sys/mman.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <mach-o/dyld.h>
|
||||
#include <mach-o/loader.h>
|
||||
#include <mach-o/fat.h>
|
||||
#include <mach-o/nlist.h>
|
||||
#include "symbols.h"
|
||||
#include "arch.h"
|
||||
#include "log.h"
|
||||
|
||||
|
||||
class MachOParser {
|
||||
@@ -31,18 +35,18 @@ class MachOParser {
|
||||
NativeCodeCache* _cc;
|
||||
const mach_header* _image_base;
|
||||
|
||||
static const char* add(const void* base, uint64_t offset) {
|
||||
static const char* add(const void* base, uint32_t offset) {
|
||||
return (const char*)base + offset;
|
||||
}
|
||||
|
||||
void loadSymbols(const symtab_command* symtab, const char* text_base, const char* link_base) {
|
||||
const nlist_64* symbol_table = (const nlist_64*)add(link_base, symtab->symoff);
|
||||
const char* str_table = add(link_base, symtab->stroff);
|
||||
void loadSymbols(mach_header_64* header, symtab_command* symtab) {
|
||||
nlist_64* symbol_table = (nlist_64*)add(header, symtab->symoff);
|
||||
const char* str_table = add(header, symtab->stroff);
|
||||
|
||||
for (uint32_t i = 0; i < symtab->nsyms; i++) {
|
||||
nlist_64 sym = symbol_table[i];
|
||||
if ((sym.n_type & 0xee) == 0x0e && sym.n_value != 0) {
|
||||
const char* addr = text_base + sym.n_value;
|
||||
const char* addr = add(_image_base, sym.n_value);
|
||||
const char* name = str_table + sym.n_un.n_strx;
|
||||
if (name[0] == '_') name++;
|
||||
_cc->add(addr, 0, name);
|
||||
@@ -50,46 +54,75 @@ class MachOParser {
|
||||
}
|
||||
}
|
||||
|
||||
void parseMachO(mach_header_64* header) {
|
||||
load_command* lc = (load_command*)(header + 1);
|
||||
|
||||
for (uint32_t i = 0; i < header->ncmds; i++) {
|
||||
if (lc->cmd == LC_SYMTAB) {
|
||||
loadSymbols(header, (symtab_command*)lc);
|
||||
break;
|
||||
}
|
||||
lc = (load_command*)add(lc, lc->cmdsize);
|
||||
}
|
||||
}
|
||||
|
||||
void parseFatObject(fat_header* header) {
|
||||
int narch = header->nfat_arch;
|
||||
fat_arch* arch = (fat_arch*)(header + 1);
|
||||
|
||||
for (uint32_t i = 0; i < narch; i++) {
|
||||
if (arch[i].cputype == _image_base->cputype &&
|
||||
arch[i].cpusubtype == _image_base->cpusubtype) {
|
||||
parseMachO((mach_header_64*)add(header, arch[i].offset));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// The same as parseFatObject, but fields are big-endian
|
||||
void parseFatObjectBE(fat_header* header) {
|
||||
int narch = htonl(header->nfat_arch);
|
||||
fat_arch* arch = (fat_arch*)(header + 1);
|
||||
|
||||
for (uint32_t i = 0; i < narch; i++) {
|
||||
if (htonl(arch[i].cputype) == _image_base->cputype &&
|
||||
htonl(arch[i].cpusubtype) == _image_base->cpusubtype) {
|
||||
parseMachO((mach_header_64*)add(header, htonl(arch[i].offset)));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void parse(mach_header* header) {
|
||||
uint32_t magic = header->magic;
|
||||
if (magic == MH_MAGIC_64) {
|
||||
parseMachO((mach_header_64*)header);
|
||||
} else if (magic == FAT_MAGIC) {
|
||||
parseFatObject((fat_header*)header);
|
||||
} else if (magic == FAT_CIGAM) {
|
||||
parseFatObjectBE((fat_header*)header);
|
||||
}
|
||||
}
|
||||
|
||||
public:
|
||||
MachOParser(NativeCodeCache* cc, const mach_header* image_base) : _cc(cc), _image_base(image_base) {
|
||||
}
|
||||
|
||||
bool parse() {
|
||||
if (_image_base->magic != MH_MAGIC_64) {
|
||||
return false;
|
||||
static void parseFile(NativeCodeCache* cc, const mach_header* image_base, const char* file_name) {
|
||||
int fd = open(file_name, O_RDONLY);
|
||||
if (fd == -1) {
|
||||
return;
|
||||
}
|
||||
|
||||
const mach_header_64* header = (const mach_header_64*)_image_base;
|
||||
const load_command* lc = (const load_command*)(header + 1);
|
||||
size_t length = (size_t)lseek(fd, 0, SEEK_END);
|
||||
void* addr = mmap(NULL, length, PROT_READ, MAP_PRIVATE, fd, 0);
|
||||
close(fd);
|
||||
|
||||
const char* UNDEFINED = (const char*)-1;
|
||||
const char* text_base = UNDEFINED;
|
||||
const char* link_base = UNDEFINED;
|
||||
|
||||
for (uint32_t i = 0; i < header->ncmds; i++) {
|
||||
if (lc->cmd == LC_SEGMENT_64) {
|
||||
const segment_command_64* sc = (const segment_command_64*)lc;
|
||||
if ((sc->initprot & 4) != 0) {
|
||||
if (text_base == UNDEFINED || strcmp(sc->segname, "__TEXT") == 0) {
|
||||
text_base = (const char*)_image_base - sc->vmaddr;
|
||||
_cc->updateBounds(_image_base, add(_image_base, sc->vmsize));
|
||||
}
|
||||
} else if ((sc->initprot & 7) == 1) {
|
||||
if (link_base == UNDEFINED || strcmp(sc->segname, "__LINKEDIT") == 0) {
|
||||
link_base = text_base + sc->vmaddr - sc->fileoff;
|
||||
}
|
||||
}
|
||||
} else if (lc->cmd == LC_SYMTAB) {
|
||||
if (text_base == UNDEFINED || link_base == UNDEFINED) {
|
||||
return false;
|
||||
}
|
||||
loadSymbols((const symtab_command*)lc, text_base, link_base);
|
||||
break;
|
||||
}
|
||||
lc = (const load_command*)add(lc, lc->cmdsize);
|
||||
if (addr == MAP_FAILED) {
|
||||
fprintf(stderr, "Could not parse symbols from %s: %s\n", file_name, strerror(errno));
|
||||
} else {
|
||||
MachOParser parser(cc, image_base);
|
||||
parser.parse((mach_header*)addr);
|
||||
munmap(addr, length);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
@@ -107,24 +140,14 @@ void Symbols::parseLibraries(NativeCodeCache** array, volatile int& count, int s
|
||||
|
||||
for (uint32_t i = 0; i < images && count < size; i++) {
|
||||
const mach_header* image_base = _dyld_get_image_header(i);
|
||||
if (image_base == NULL || !_parsed_libraries.insert(image_base).second) {
|
||||
if (!_parsed_libraries.insert(image_base).second) {
|
||||
continue; // the library was already parsed
|
||||
}
|
||||
|
||||
const char* path = _dyld_get_image_name(i);
|
||||
|
||||
// Protect the library from unloading while parsing symbols
|
||||
void* handle = dlopen(path, RTLD_LAZY | RTLD_NOLOAD);
|
||||
if (handle == NULL) {
|
||||
continue;
|
||||
}
|
||||
|
||||
NativeCodeCache* cc = new NativeCodeCache(path);
|
||||
MachOParser parser(cc, image_base);
|
||||
if (!parser.parse()) {
|
||||
Log::warn("Could not parse symbols from %s", path);
|
||||
}
|
||||
dlclose(handle);
|
||||
MachOParser::parseFile(cc, image_base, path);
|
||||
|
||||
cc->sort();
|
||||
array[count] = cc;
|
||||
|
||||
89
src/trap.cpp
89
src/trap.cpp
@@ -14,75 +14,50 @@
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include <unistd.h>
|
||||
#include <sys/mman.h>
|
||||
#include "trap.h"
|
||||
#include "os.h"
|
||||
#include "stackFrame.h"
|
||||
|
||||
|
||||
uintptr_t Trap::_page_start[TRAP_COUNT] = {0};
|
||||
struct sigaction Trap::_jvm_handler = {NULL};
|
||||
|
||||
|
||||
void Trap::signalHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
// Ignore access violations on our traps
|
||||
uintptr_t pc = StackFrame(ucontext).pc();
|
||||
for (int i = 0; i < TRAP_COUNT; i++) {
|
||||
if (pc - _page_start[i] < OS::page_size) {
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
// Otherwise, delegate to the JVM signal handler
|
||||
_jvm_handler.sa_sigaction(signo, siginfo, ucontext);
|
||||
}
|
||||
|
||||
void Trap::assign(const void* address) {
|
||||
_entry = (uintptr_t)address;
|
||||
if (_entry == 0) {
|
||||
return;
|
||||
bool Trap::assign(const void* address) {
|
||||
uintptr_t entry = (uintptr_t)address;
|
||||
if (entry == 0) {
|
||||
_entry = 0;
|
||||
return true;
|
||||
}
|
||||
|
||||
#if defined(__arm__) || defined(__thumb__)
|
||||
_breakpoint_insn = (_entry & 1) ? BREAKPOINT_THUMB : BREAKPOINT;
|
||||
_entry ^= 1;
|
||||
if (entry & 1) {
|
||||
entry ^= 1;
|
||||
_breakpoint_insn = BREAKPOINT_THUMB;
|
||||
}
|
||||
#endif
|
||||
|
||||
_saved_insn = *(instruction_t*)_entry;
|
||||
_page_start[_id] = _entry & -OS::page_size;
|
||||
|
||||
if (WX_MEMORY && _jvm_handler.sa_sigaction == NULL) {
|
||||
// While we are patching the code in RW mode, another thread may attempt to execute it
|
||||
sigaction(SIGBUS, NULL, &_jvm_handler);
|
||||
struct sigaction sa = _jvm_handler;
|
||||
sa.sa_sigaction = signalHandler;
|
||||
sigaction(SIGBUS, &sa, NULL);
|
||||
}
|
||||
}
|
||||
|
||||
// Two allocation traps are always enabled/disabled together.
|
||||
// If both traps belong to the same page, protect/unprotect it just once.
|
||||
void Trap::pair(Trap& second) {
|
||||
if (_page_start[_id] == _page_start[second._id]) {
|
||||
_protect = false;
|
||||
second._unprotect = false;
|
||||
}
|
||||
}
|
||||
|
||||
// Patch instruction at the entry point
|
||||
bool Trap::patch(instruction_t insn) {
|
||||
if (_unprotect) {
|
||||
int prot = WX_MEMORY ? (PROT_READ | PROT_WRITE) : (PROT_READ | PROT_WRITE | PROT_EXEC);
|
||||
if (mprotect((void*)(_entry & -OS::page_size), OS::page_size, prot) != 0) {
|
||||
if (entry != _entry) {
|
||||
// Make the entry point writable, so we can rewrite instructions
|
||||
long page_size = sysconf(_SC_PAGESIZE);
|
||||
if (mprotect((void*)(entry & -page_size), page_size, PROT_READ | PROT_WRITE | PROT_EXEC) != 0) {
|
||||
return false;
|
||||
}
|
||||
_entry = entry;
|
||||
_saved_insn = *(instruction_t*)entry;
|
||||
}
|
||||
|
||||
*(instruction_t*)_entry = insn;
|
||||
flushCache(_entry);
|
||||
|
||||
if (_protect) {
|
||||
mprotect((void*)(_entry & -OS::page_size), OS::page_size, PROT_READ | PROT_EXEC);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// Insert breakpoint at the very first instruction
|
||||
void Trap::install() {
|
||||
if (_entry) {
|
||||
*(instruction_t*)_entry = _breakpoint_insn;
|
||||
flushCache(_entry);
|
||||
}
|
||||
}
|
||||
|
||||
// Clear breakpoint - restore the original instruction
|
||||
void Trap::uninstall() {
|
||||
if (_entry) {
|
||||
*(instruction_t*)_entry = _saved_insn;
|
||||
flushCache(_entry);
|
||||
}
|
||||
}
|
||||
|
||||
29
src/trap.h
29
src/trap.h
@@ -17,32 +17,18 @@
|
||||
#ifndef _TRAP_H
|
||||
#define _TRAP_H
|
||||
|
||||
#include <signal.h>
|
||||
#include <stdint.h>
|
||||
#include "arch.h"
|
||||
|
||||
|
||||
const int TRAP_COUNT = 4;
|
||||
|
||||
|
||||
class Trap {
|
||||
private:
|
||||
int _id;
|
||||
bool _unprotect;
|
||||
bool _protect;
|
||||
uintptr_t _entry;
|
||||
instruction_t _breakpoint_insn;
|
||||
instruction_t _saved_insn;
|
||||
|
||||
bool patch(instruction_t insn);
|
||||
|
||||
static uintptr_t _page_start[TRAP_COUNT];
|
||||
static struct sigaction _jvm_handler;
|
||||
|
||||
static void signalHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
|
||||
public:
|
||||
Trap(int id) : _id(id), _unprotect(true), _protect(WX_MEMORY), _entry(0), _breakpoint_insn(BREAKPOINT) {
|
||||
Trap() : _entry(0), _breakpoint_insn(BREAKPOINT) {
|
||||
}
|
||||
|
||||
uintptr_t entry() {
|
||||
@@ -54,16 +40,9 @@ class Trap {
|
||||
return pc - _entry <= sizeof(instruction_t);
|
||||
}
|
||||
|
||||
void assign(const void* address);
|
||||
void pair(Trap& second);
|
||||
|
||||
bool install() {
|
||||
return _entry == 0 || patch(_breakpoint_insn);
|
||||
}
|
||||
|
||||
bool uninstall() {
|
||||
return _entry == 0 || patch(_saved_insn);
|
||||
}
|
||||
bool assign(const void* address);
|
||||
void install();
|
||||
void uninstall();
|
||||
};
|
||||
|
||||
#endif // _TRAP_H
|
||||
|
||||
120
src/vmEntry.cpp
120
src/vmEntry.cpp
@@ -14,6 +14,7 @@
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include <fstream>
|
||||
#include <dlfcn.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
@@ -24,14 +25,9 @@
|
||||
#include "profiler.h"
|
||||
#include "instrument.h"
|
||||
#include "lockTracer.h"
|
||||
#include "log.h"
|
||||
#include "vmStructs.h"
|
||||
|
||||
|
||||
// JVM TI agent return codes
|
||||
const int ARGUMENTS_ERROR = 100;
|
||||
const int COMMAND_ERROR = 200;
|
||||
|
||||
static Arguments _agent_args;
|
||||
|
||||
JavaVM* VM::_vm;
|
||||
@@ -43,17 +39,14 @@ AsyncGetCallTrace VM::_asyncGetCallTrace;
|
||||
JVM_GetManagement VM::_getManagement;
|
||||
jvmtiError (JNICALL *VM::_orig_RedefineClasses)(jvmtiEnv*, jint, const jvmtiClassDefinition*);
|
||||
jvmtiError (JNICALL *VM::_orig_RetransformClasses)(jvmtiEnv*, jint, const jclass* classes);
|
||||
jvmtiError (JNICALL *VM::_orig_GenerateEvents)(jvmtiEnv* jvmti, jvmtiEvent event_type);
|
||||
volatile int VM::_in_redefine_classes = 0;
|
||||
|
||||
|
||||
bool VM::init(JavaVM* vm, bool attach) {
|
||||
if (_jvmti != NULL) return true;
|
||||
void VM::init(JavaVM* vm, bool attach) {
|
||||
if (_jvmti != NULL) return;
|
||||
|
||||
_vm = vm;
|
||||
if (_vm->GetEnv((void**)&_jvmti, JVMTI_VERSION_1_0) != 0) {
|
||||
return false;
|
||||
}
|
||||
_vm->GetEnv((void**)&_jvmti, JVMTI_VERSION_1_0);
|
||||
|
||||
char* prop;
|
||||
if (_jvmti->GetSystemProperty("java.vm.name", &prop) == 0) {
|
||||
@@ -74,6 +67,14 @@ bool VM::init(JavaVM* vm, bool attach) {
|
||||
}
|
||||
_jvmti->Deallocate((unsigned char*)prop);
|
||||
}
|
||||
|
||||
if (is_hotspot) {
|
||||
JVMTIFunctions* functions = *(JVMTIFunctions**)_jvmti;
|
||||
_orig_RedefineClasses = functions->RedefineClasses;
|
||||
_orig_RetransformClasses = functions->RetransformClasses;
|
||||
functions->RedefineClasses = RedefineClassesHook;
|
||||
functions->RetransformClasses = RetransformClassesHook;
|
||||
}
|
||||
}
|
||||
|
||||
_libjvm = getLibraryHandle("libjvm.so");
|
||||
@@ -125,15 +126,6 @@ bool VM::init(JavaVM* vm, bool attach) {
|
||||
_jvmti->GenerateEvents(JVMTI_EVENT_DYNAMIC_CODE_GENERATED);
|
||||
_jvmti->GenerateEvents(JVMTI_EVENT_COMPILED_METHOD_LOAD);
|
||||
}
|
||||
|
||||
if (hotspot_version() > 0 && hotspot_version() < 11) {
|
||||
// Avoid GenerateEvents conflict with another agent
|
||||
JVMTIFunctions* functions = *(JVMTIFunctions**)_jvmti;
|
||||
_orig_GenerateEvents = functions->GenerateEvents;
|
||||
functions->GenerateEvents = GenerateEventsHook;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// Run late initialization when JVM is ready
|
||||
@@ -141,20 +133,10 @@ void VM::ready() {
|
||||
Profiler::_instance.updateSymbols(false);
|
||||
NativeCodeCache* libjvm = Profiler::_instance.findNativeLibrary((const void*)_asyncGetCallTrace);
|
||||
if (libjvm != NULL) {
|
||||
JitWriteProtection jit(true); // workaround for JDK-8262896
|
||||
VMStructs::init(libjvm);
|
||||
}
|
||||
|
||||
Profiler::_instance.setupTrapHandler();
|
||||
|
||||
_libjava = getLibraryHandle("libjava.so");
|
||||
|
||||
// Make sure we reload method IDs upon class retransformation
|
||||
JVMTIFunctions* functions = *(JVMTIFunctions**)_jvmti;
|
||||
_orig_RedefineClasses = functions->RedefineClasses;
|
||||
_orig_RetransformClasses = functions->RetransformClasses;
|
||||
functions->RedefineClasses = RedefineClassesHook;
|
||||
functions->RetransformClasses = RetransformClassesHook;
|
||||
}
|
||||
|
||||
void* VM::getLibraryHandle(const char* name) {
|
||||
@@ -163,7 +145,7 @@ void* VM::getLibraryHandle(const char* name) {
|
||||
if (handle != NULL) {
|
||||
return handle;
|
||||
}
|
||||
Log::warn("Failed to load %s: %s", name, dlerror());
|
||||
std::cerr << "Failed to load " << name << ": " << dlerror() << std::endl;
|
||||
}
|
||||
return RTLD_DEFAULT;
|
||||
}
|
||||
@@ -207,10 +189,7 @@ void JNICALL VM::VMInit(jvmtiEnv* jvmti, JNIEnv* jni, jthread thread) {
|
||||
loadAllMethodIDs(jvmti, jni);
|
||||
|
||||
// Delayed start of profiler if agent has been loaded at VM bootstrap
|
||||
Error error = Profiler::_instance.run(_agent_args);
|
||||
if (error) {
|
||||
Log::error(error.message());
|
||||
}
|
||||
Profiler::_instance.run(_agent_args);
|
||||
}
|
||||
|
||||
void JNICALL VM::VMDeath(jvmtiEnv* jvmti, JNIEnv* jni) {
|
||||
@@ -221,13 +200,11 @@ jvmtiError VM::RedefineClassesHook(jvmtiEnv* jvmti, jint class_count, const jvmt
|
||||
atomicInc(_in_redefine_classes);
|
||||
jvmtiError result = _orig_RedefineClasses(jvmti, class_count, class_definitions);
|
||||
|
||||
if (result == 0) {
|
||||
// jmethodIDs are invalidated after RedefineClasses
|
||||
JNIEnv* env = jni();
|
||||
for (int i = 0; i < class_count; i++) {
|
||||
if (class_definitions[i].klass != NULL) {
|
||||
loadMethodIDs(jvmti, env, class_definitions[i].klass);
|
||||
}
|
||||
// jmethodIDs are invalidated after RedefineClasses
|
||||
JNIEnv* env = jni();
|
||||
for (int i = 0; i < class_count; i++) {
|
||||
if (class_definitions[i].klass != NULL) {
|
||||
loadMethodIDs(jvmti, env, class_definitions[i].klass);
|
||||
}
|
||||
}
|
||||
|
||||
@@ -239,13 +216,11 @@ jvmtiError VM::RetransformClassesHook(jvmtiEnv* jvmti, jint class_count, const j
|
||||
atomicInc(_in_redefine_classes);
|
||||
jvmtiError result = _orig_RetransformClasses(jvmti, class_count, classes);
|
||||
|
||||
if (result == 0) {
|
||||
// jmethodIDs are invalidated after RetransformClasses
|
||||
JNIEnv* env = jni();
|
||||
for (int i = 0; i < class_count; i++) {
|
||||
if (classes[i] != NULL) {
|
||||
loadMethodIDs(jvmti, env, classes[i]);
|
||||
}
|
||||
// jmethodIDs are invalidated after RetransformClasses
|
||||
JNIEnv* env = jni();
|
||||
for (int i = 0; i < class_count; i++) {
|
||||
if (classes[i] != NULL) {
|
||||
loadMethodIDs(jvmti, env, classes[i]);
|
||||
}
|
||||
}
|
||||
|
||||
@@ -253,28 +228,15 @@ jvmtiError VM::RetransformClassesHook(jvmtiEnv* jvmti, jint class_count, const j
|
||||
return result;
|
||||
}
|
||||
|
||||
jvmtiError VM::GenerateEventsHook(jvmtiEnv* jvmti, jvmtiEvent event_type) {
|
||||
if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) {
|
||||
// Workaround for JDK-8222072: prepare to receive events designated for another agent
|
||||
Log::warn("async-profiler conflicts with another agent calling GenerateEvents()");
|
||||
Profiler::_instance.resetJavaMethods();
|
||||
}
|
||||
return _orig_GenerateEvents(jvmti, event_type);
|
||||
}
|
||||
|
||||
|
||||
extern "C" JNIEXPORT jint JNICALL
|
||||
Agent_OnLoad(JavaVM* vm, char* options, void* reserved) {
|
||||
Error error = _agent_args.parse(options);
|
||||
Log::open(_agent_args._log);
|
||||
if (error) {
|
||||
Log::error(error.message());
|
||||
return ARGUMENTS_ERROR;
|
||||
}
|
||||
VM::init(vm, false);
|
||||
|
||||
if (!VM::init(vm, false)) {
|
||||
Log::error("JVM does not support Tool Interface");
|
||||
return COMMAND_ERROR;
|
||||
Error error = _agent_args.parse(options);
|
||||
if (error) {
|
||||
std::cerr << error.message() << std::endl;
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
@@ -282,39 +244,27 @@ Agent_OnLoad(JavaVM* vm, char* options, void* reserved) {
|
||||
|
||||
extern "C" JNIEXPORT jint JNICALL
|
||||
Agent_OnAttach(JavaVM* vm, char* options, void* reserved) {
|
||||
VM::init(vm, true);
|
||||
|
||||
Arguments args;
|
||||
Error error = args.parse(options);
|
||||
Log::open(args._log);
|
||||
if (error) {
|
||||
Log::error(error.message());
|
||||
return ARGUMENTS_ERROR;
|
||||
}
|
||||
|
||||
if (!VM::init(vm, true)) {
|
||||
Log::error("JVM does not support Tool Interface");
|
||||
return COMMAND_ERROR;
|
||||
std::cerr << error.message() << std::endl;
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Save the arguments in case of shutdown
|
||||
if (args._action == ACTION_START || args._action == ACTION_RESUME) {
|
||||
_agent_args.save(args);
|
||||
}
|
||||
|
||||
error = Profiler::_instance.run(args);
|
||||
if (error) {
|
||||
Log::error(error.message());
|
||||
return COMMAND_ERROR;
|
||||
}
|
||||
Profiler::_instance.run(args);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
extern "C" JNIEXPORT jint JNICALL
|
||||
JNI_OnLoad(JavaVM* vm, void* reserved) {
|
||||
if (!VM::init(vm, true)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
VM::init(vm, true);
|
||||
JavaAPI::registerNatives(VM::jvmti(), VM::jni());
|
||||
return JNI_VERSION_1_6;
|
||||
}
|
||||
|
||||
@@ -78,9 +78,7 @@ typedef VMManagement* (*JVM_GetManagement)(jint);
|
||||
typedef struct {
|
||||
void* unused1[86];
|
||||
jvmtiError (JNICALL *RedefineClasses)(jvmtiEnv*, jint, const jvmtiClassDefinition*);
|
||||
void* unused2[35];
|
||||
jvmtiError (JNICALL *GenerateEvents)(jvmtiEnv*, jvmtiEvent);
|
||||
void* unused3[28];
|
||||
void* unused2[64];
|
||||
jvmtiError (JNICALL *RetransformClasses)(jvmtiEnv*, jint, const jclass*);
|
||||
} JVMTIFunctions;
|
||||
|
||||
@@ -92,7 +90,6 @@ class VM {
|
||||
static JVM_GetManagement _getManagement;
|
||||
static jvmtiError (JNICALL *_orig_RedefineClasses)(jvmtiEnv*, jint, const jvmtiClassDefinition*);
|
||||
static jvmtiError (JNICALL *_orig_RetransformClasses)(jvmtiEnv*, jint, const jclass* classes);
|
||||
static jvmtiError (JNICALL *_orig_GenerateEvents)(jvmtiEnv* jvmti, jvmtiEvent event_type);
|
||||
static volatile int _in_redefine_classes;
|
||||
static int _hotspot_version;
|
||||
|
||||
@@ -106,7 +103,7 @@ class VM {
|
||||
static void* _libjava;
|
||||
static AsyncGetCallTrace _asyncGetCallTrace;
|
||||
|
||||
static bool init(JavaVM* vm, bool attach);
|
||||
static void init(JavaVM* vm, bool attach);
|
||||
|
||||
static jvmtiEnv* jvmti() {
|
||||
return _jvmti;
|
||||
@@ -142,7 +139,6 @@ class VM {
|
||||
|
||||
static jvmtiError JNICALL RedefineClassesHook(jvmtiEnv* jvmti, jint class_count, const jvmtiClassDefinition* class_definitions);
|
||||
static jvmtiError JNICALL RetransformClassesHook(jvmtiEnv* jvmti, jint class_count, const jclass* classes);
|
||||
static jvmtiError JNICALL GenerateEventsHook(jvmtiEnv* jvmti, jvmtiEvent event_type);
|
||||
};
|
||||
|
||||
#endif // _VMENTRY_H
|
||||
|
||||
@@ -21,7 +21,6 @@
|
||||
#include <sys/types.h>
|
||||
#include "wallClock.h"
|
||||
#include "profiler.h"
|
||||
#include "stackFrame.h"
|
||||
|
||||
|
||||
// Maximum number of threads sampled in one iteration. This limit serves as a throttle
|
||||
@@ -41,30 +40,9 @@ const int WAKEUP_SIGNAL = SIGIO;
|
||||
long WallClock::_interval;
|
||||
bool WallClock::_sample_idle_threads;
|
||||
|
||||
ThreadState WallClock::getThreadState(void* ucontext) {
|
||||
StackFrame frame(ucontext);
|
||||
uintptr_t pc = frame.pc();
|
||||
|
||||
// Consider a thread sleeping, if it has been interrupted in the middle of syscall execution,
|
||||
// either when PC points to the syscall instruction, or if syscall has just returned with EINTR
|
||||
if (StackFrame::isSyscall((instruction_t*)pc)) {
|
||||
return THREAD_SLEEPING;
|
||||
}
|
||||
|
||||
// Make sure the previous instruction address is readable
|
||||
uintptr_t prev_pc = pc - SYSCALL_SIZE;
|
||||
if ((pc & 0xfff) >= SYSCALL_SIZE || Profiler::_instance.findNativeLibrary((instruction_t*)prev_pc) != NULL) {
|
||||
if (StackFrame::isSyscall((instruction_t*)prev_pc) && frame.checkInterruptedSyscall()) {
|
||||
return THREAD_SLEEPING;
|
||||
}
|
||||
}
|
||||
|
||||
return THREAD_RUNNING;
|
||||
}
|
||||
|
||||
void WallClock::signalHandler(int signo, siginfo_t* siginfo, void* ucontext) {
|
||||
ExecutionEvent event;
|
||||
event._thread_state = _sample_idle_threads ? getThreadState(ucontext) : THREAD_RUNNING;
|
||||
event._thread_state = _sample_idle_threads ? Profiler::_instance.getThreadState(ucontext) : THREAD_RUNNING;
|
||||
Profiler::_instance.recordSample(ucontext, _interval, 0, &event);
|
||||
}
|
||||
|
||||
@@ -92,7 +70,7 @@ Error WallClock::start(Arguments& args) {
|
||||
return Error("interval must be positive");
|
||||
}
|
||||
|
||||
_sample_idle_threads = strcmp(args._event, EVENT_WALL) == 0;
|
||||
_sample_idle_threads = strcmp(args._event_desc, EVENT_WALL) == 0;
|
||||
|
||||
// Increase default interval for wall clock mode due to larger number of sampled threads
|
||||
_interval = args._interval ? args._interval : (_sample_idle_threads ? DEFAULT_INTERVAL * 5 : DEFAULT_INTERVAL);
|
||||
|
||||
@@ -21,7 +21,6 @@
|
||||
#include <signal.h>
|
||||
#include <pthread.h>
|
||||
#include "engine.h"
|
||||
#include "os.h"
|
||||
|
||||
|
||||
class WallClock : public Engine {
|
||||
@@ -39,7 +38,6 @@ class WallClock : public Engine {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static ThreadState getThreadState(void* ucontext);
|
||||
static void signalHandler(int signo, siginfo_t* siginfo, void* ucontext);
|
||||
static void wakeupHandler(int signo);
|
||||
|
||||
@@ -47,8 +45,8 @@ class WallClock : public Engine {
|
||||
static void sleep(long interval);
|
||||
|
||||
public:
|
||||
const char* title() {
|
||||
return _sample_idle_threads ? "Wall clock profile" : "CPU profile";
|
||||
const char* name() {
|
||||
return _sample_idle_threads ? EVENT_WALL : EVENT_CPU;
|
||||
}
|
||||
|
||||
const char* units() {
|
||||
|
||||
Reference in New Issue
Block a user