Add support for running low level profiler on Android.

tools/android-ll-prof.sh

+#!/bin/bash
+

[Michael Starzinger, 2012/09/06 14:23:16]

Copyright header is missing.

[ulan, 2012/09/06 14:31:27]

Done.

+# Runs d8 with the given arguments on the device under 'perf' and
+# processes the profiler trace and v8 logs using ll_prof.py.
+# 
+# Usage:
+# > ./tools/android-ll-prof.sh (debug|release) "args to d8" "args to ll_prof.py"
+#
+# The script assumes that the current directory is the v8 root directory.
+# It creates deploy directory ./deploy/data/local/tmp/v8, copies there the d8
+# binary either from out/android_arm.release or out/android_arm.debug, and
+# then sync the deploy directory with /data/local/tmp/v8 on the device.
+# You can put JS files in the deploy directory before running the script.
+# Note: $ANDROID_NDK_ROOT must be set.
+
+MODE=$1
+RUN_ARGS=$2
+LL_PROF_ARGS=$3
+
+BASE=`pwd`

[Michael Starzinger, 2012/09/06 14:23:16]

You could use the following to compute the base path and not rely on the current
directory being the v8 checkout.

tools_path=`cd $(dirname "$0");pwd`

[ulan, 2012/09/06 14:31:27]

Done.

+DEPLOY=$BASE/deploy

[Michael Starzinger, 2012/09/06 14:23:16]

Put quotes around the value of DEPLOY.

[ulan, 2012/09/06 14:31:27]

Done.

+
+set +e
+mkdir -p "$DEPLOY/data/local/tmp/v8"
+
+cp "$BASE/out/android_arm.$MODE/d8" "$DEPLOY/data/local/tmp/v8/d8"
+
+adb -p "$DEPLOY" sync data
+
+adb shell "cd /data/local/tmp/v8;\
+           perf record -R -e cycles -c 10000 -f -i \
+           ./d8 --ll_prof --gc-fake-mmap=/data/local/tmp/__v8_gc__ $RUN_ARGS"
+
+adb pull /data/local/tmp/v8/v8.log .
+adb pull /data/local/tmp/v8/v8.log.ll .
+adb pull /data/perf.data .
+
+ARCH=arm-linux-androideabi-4.4.3
+TOOLCHAIN=${ANDROID_NDK_ROOT}/toolchains/$ARCH/prebuilt/linux-x86/bin

[Michael Starzinger, 2012/09/06 14:23:16]

Put quotes around the value of TOOLCHAIN.

[ulan, 2012/09/06 14:31:27]

Done.

+
+$BASE/tools/ll_prof.py --host-root="$BASE/deploy" \
+                       --gc-fake-mmap=/data/local/tmp/__v8_gc__ \
+                       --objdump="$TOOLCHAIN/arm-linux-androideabi-objdump" \
+                       $LL_PROF_ARGS