Can't Run a Java Android Program with Valgrind

Can't run a Java Android program with Valgrind

You have to create a script, lets call it start_valgrind.sh

#!/system/bin/sh

PACKAGE="com.example.hellojni"

# Callgrind tool
#VGPARAMS='-v --error-limit=no --trace-children=yes --log-file=/sdcard/valgrind.log.%p --tool=callgrind --callgrind-out-file=/sdcard/callgrind.out.%p'

# Memcheck tool
VGPARAMS='-v --error-limit=no --trace-children=yes --log-file=/sdcard/valgrind.log.%p --tool=memcheck --leak-check=full --show-reachable=yes'

export TMPDIR=/data/data/$PACKAGE

exec /data/local/Inst/bin/valgrind $VGPARAMS $* 

that should be copied to the device.

Once you have the above script in the start_valgrind.sh file somewhere on your local filesystem you can just use the below script (lets call it bootstrap_valgrind.sh) to do the all the work (copies the start_valgrind.sh script to the phone, runs it, starts your app through Valgrind).

#!/usr/bin/env bash

PACKAGE="com.example.hellojni"

adb push start_valgrind.sh /data/local/
adb shell chmod 777 /data/local/start_valgrind.sh 

adb root
adb shell setprop wrap.$PACKAGE "logwrapper /data/local/start_valgrind.sh"

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

adb shell am force-stop $PACKAGE
adb shell am start -a android.intent.action.MAIN -n $PACKAGE/.HelloJni

adb logcat -c
adb logcat

exit 0 

WARNING: Make sure the property name set with setprop i.e. (wrap.com.yourcompany.yourapp) has a length of less than 31 characters.

Otherwise, you'll get the error "could not set property" because you CANNOT set a property name with a length greater than 31, which is the number maximum allowed characters in the property name.

Also the property value should be <= 91 characters: https://stackoverflow.com/a/5068818/313113

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For how to build Valgrind for Android (ARM) see my script from here: https://stackoverflow.com/a/19255251/313113

How to start an android app with valgrind

You can try to clear the logcat first

prompt# adb logcat -c
prompt# adb logcat

You should be able to see the logs coming in once you triggered your application.

am start -a android.intent.action.MAIN -n com.example.hellojni/.HelloJni

I had problems with my shell script and i used this instead.

adb shell setprop wrap.com.example.hellojni "logwrapper /data/local/Inst/bin/valgrind"

You should be able to pass in the parameter right after valgrind

How do I run valgrind with an Android app?

You get the error "could not set property" because you CANNOT set a property name with a length greater than 31, which is the number maximum allowed characters in the property name: https://stackoverflow.com/a/5068818/313113

Try to reduce the package name length to less than or equal 31 characters when you set the property with adb shell setprop.

And use a bash script to simply things.

For further details see my answer here: https://stackoverflow.com/a/19235439/313113

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