You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
1.5 KiB
36 lines
1.5 KiB
4 months ago
|
# jitload
|
||
|
|
|
||
|
|
Jitload is an art-specific agent allowing one to count the number of classes
|
||
|
|
loaded on the jit-thread or verify that none were.
|
||
|
|
|
||
|
|
# Usage
|
||
|
|
### Build
|
||
|
|
> `m libjitload` # or 'm libjitloadd' with debugging checks enabled
|
||
|
|
|
||
|
|
The libraries will be built for 32-bit, 64-bit, host and target. Below examples assume you want to use the 64-bit version.
|
||
|
|
### Command Line
|
||
|
|
|
||
|
|
> `art -Xplugin:$ANDROID_HOST_OUT/lib64/libopenjdkjvmti.so -agentpath:$ANDROID_HOST_OUT/lib64/libjitload.so -cp tmp/java/helloworld.dex -Xint helloworld`
|
||
|
|
|
||
|
|
* `-Xplugin` and `-agentpath` need to be used, otherwise libtitrace agent will fail during init.
|
||
|
|
* If using `libartd.so`, make sure to use the debug version of jvmti and agent.
|
||
|
|
* Pass the '=fatal' option to the agent to cause it to abort if any classes are
|
||
|
|
loaded on a jit thread. Otherwise a warning will be printed.
|
||
|
|
|
||
|
|
> `art -d -Xplugin:$ANDROID_HOST_OUT/lib64/libopenjdkjvmtid.so -agentpath:$ANDROID_HOST_OUT/lib64/libjitloadd.so=fatal -cp tmp/java/helloworld.dex -Xint helloworld`
|
||
|
|
|
||
|
|
* To use with run-test or testrunner.py use the --with-agent argument.
|
||
|
|
|
||
|
|
> `./test/run-test --host --with-agent libtitraced.so=fatal 001-HelloWorld`
|
||
|
|
|
||
|
|
|
||
|
|
### Printing the Results
|
||
|
|
All statistics gathered during the trace are printed automatically when the
|
||
|
|
program normally exits. In the case of Android applications, they are always
|
||
|
|
killed, so we need to manually print the results.
|
||
|
|
|
||
|
|
> `kill -SIGQUIT $(pid com.example.android.displayingbitmaps)`
|
||
|
|
|
||
|
|
Will initiate a dump of the counts (to logcat).
|
||
|
|
|