For standalone applications the instructions above for Linux should
work. To trace applications started from within the Android VM process
-(app_process aka zygote) you'll have to wrap this process and enable
+(`app_process` aka zygote) you'll have to wrap this process and enable
tracing dynamically for the application to be traced.
- Wrapping the android main VM process:
- In the Android root /init.rc add the LD_PRELOAD setting to zygote's
+ In the Android root /init.rc add the `LD_PRELOAD` setting to zygote's
environment in the 'service zygote' section:
- """
- service zygote ...
- setenv LD_PRELOAD /data/egltrace.so
- ...
- """
+ service zygote ...
+ setenv LD_PRELOAD /data/egltrace.so
+ ...
Note that ICS will overwrite the /init.rc during each boot with the
version in the recovery image. So you'll have to change the file in
your ICS source tree, rebuild and reflash the device.
Rebuilding/reflashing only the recovery image should be sufficient.
-
- Copy egltrace.so to /data
On the host:
- $ adb push /path/to/apitrace/build/wrappers/egltrace.so /data
+ adb push /path/to/apitrace/build/wrappers/egltrace.so /data
- Adjust file permissions to store the trace file:
By default egltrace.so will store the trace in
- /data/app_process.trace. For this to work for applications running
- with a uid other than 0, you have to allow writes to the /data
+ `/data/app_process.trace`. For this to work for applications running
+ with a uid other than 0, you have to allow writes to the `/data`
directory on the device:
- # chmod 0777 /data
-
+ chmod 0777 /data
- Enable tracing for a specific process name:
To trace for example the Settings application:
- # setprop debug.apitrace.procname com.android.settings
- In general this name will match what 'ps' reports.
+ setprop debug.apitrace.procname com.android.settings
+ In general this name will match what `ps` reports.
- Start the application:
of pre-starting the apps, you might have to kill the application
first:
- # kill <pid of app>
+ kill <pid of app>
Launch the application for example from the application menu.