Engineering Report <dv> - Week 30, 2015

Highlights

嘗試把 Andoird 內建的 browser 跑在 Valgrind 上，但是目前會因為 Watchdog 的關係把系統的程式都砍掉，造成現在跑下去後沒多久系統就會重開 (目前還沒解決)

start_valgrind (shell script) :

#!/system/bin/sh

PACKAGE="com.android.browser"

VGPARAMS='--error-limit=no --trace-children=yes --tool=memcheck --leak-check=full --show-reachable=yes'

export TMPDIR=/data/data/$PACKAGE

echo "valgrind args: $*"
exec /data/local/Inst/bin/valgrind $VGPARAMS $*

(run script) :

PACKAGE="com.android.browser"
ACTIVITY=".BrowserActivity"

adb push start_valgrind /data/local/Inst/bin/
adb shell chmod 777 /data/local/Inst/bin/start_valgrind

adb root
adb shell am set-debug-app -w --persistent $PACKAGE
adb shell setprop wrap.$PACKAGE "logwrapper /data/local/Inst/bin/start_valgrind"

echo "wrap.$PACKAGE: $(adb shell getprop wrap.$PACKAGE)"

adb shell am start -S -D -a android.intent.action.MAIN -n $PACKAGE/$ACTIVITY

adb logcat -c
adb logcat

adb shell am clear-debug-app

exit 0

log

W/linker  ( 2537): Unsupported flags DT_FLAGS_1=0x421
I/start_valgrind( 2534): WARNING: linker: Unsupported flags DT_FLAGS_1=0x421
W/linker  ( 2537): Unsupported flags DT_FLAGS_1=0x421
I/start_valgrind( 2534): WARNING: linker: Unsupported flags DT_FLAGS_1=0x421
D/AndroidRuntime( 2537): >>>>>> START com.android.internal.os.RuntimeInit uid 10016 <<<<<<
D/AndroidRuntime( 2537): CheckJNI is ON
I/Process ( 1583): Sending signal. PID: 1583 SIG: 3
I/art     ( 1583): Thread[2,tid=1589,WaitingInMainSignalCatcherLoop,Thread*=0xb4827800,peer=0x12c020a0,"Signal Catcher"]: reacting to signal 3
...
W/Watchdog( 1583): *** WATCHDOG KILLING SYSTEM PROCESS: Blocked in handler on foreground thread (android.fg), Blocked in handler on ActivityManager (ActivityManager)
...
W/Watchdog( 1583): *** GOODBYE!
I/Process ( 1583): Sending signal. PID: 1583 SIG: 9
I/ServiceManager(   52): service 'telecom' died
I/ServiceManager(   52): service 'meminfo' died
I/ServiceManager(   52): service 'sensorservice' died
I/ServiceManager(   52): service 'batterystats' died
I/ServiceManager(   52): service 'appops' died
I/ServiceManager(   52): service 'power' died
...

[2011] Valgrind on Android — Current Status
Valgrind 的 Massif log 可以用 massif-visualizer，會用 GUI 顯示使用量的圖表

Plans

解決 Android 上用 Valgrind 跑 application 會被 Watchdog kill 掉的問題
補點 Android 相關知識 …

Issues

Android 上用 Valgrind 跑 application 有問題