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Commit 29d78052 authored by Xin Qi's avatar Xin Qi Committed by Steve Kondik
Browse files

Add the capability to set GC paramter system wide or per app level 

Set system wide default value for xhdpi-1024 device.

Change-Id: I2eeaeebdea8e023d1eab15aad9dd53cb3ecec3a1
parent 78200dfd

core/java/android/app/ActivityThread.java

+32 −0
Original line number Diff line number Diff line
@@ -115,6 +115,9 @@ import java.util.regex.Pattern; 
import libcore.io.IoUtils;



import dalvik.system.CloseGuard;

import dalvik.system.VMRuntime;

import android.os.SystemProperties;

import java.lang.*;



final class SuperNotCalledException extends AndroidRuntimeException {

    public SuperNotCalledException(String msg) {
@@ -4075,6 +4078,35 @@ public final class ActivityThread { 


        // send up app name; do this *before* waiting for debugger

        Process.setArgV0(data.processName);



        String str  = SystemProperties.get("dalvik.vm.heaputilization", "" );

        if( !str.equals("") ){

            float heapUtil = Float.valueOf(str.trim()).floatValue();

            VMRuntime.getRuntime().setTargetHeapUtilization(heapUtil);

            Log.d(TAG, "setTargetHeapUtilization:" + str );

        }

        int heapIdealFree  = SystemProperties.getInt("dalvik.vm.heapidealfree", 0 );

        if( heapIdealFree > 0 ){

            VMRuntime.getRuntime().setTargetHeapIdealFree(heapIdealFree);

            Log.d(TAG, "setTargetHeapIdealFree:" + heapIdealFree );

        }

        int heapConcurrentStart  = SystemProperties.getInt("dalvik.vm.heapconcurrentstart", 0 );

        if( heapConcurrentStart > 0 ){

            VMRuntime.getRuntime().setTargetHeapConcurrentStart(heapConcurrentStart);

            Log.d(TAG, "setTargetHeapConcurrentStart:" + heapConcurrentStart );

        }



        ////

        ////If want to set application specific GC paramters, can use

        ////the following check

        ////

        //if( data.processName.equals("com.android.gallery3d")) {

        //    VMRuntime.getRuntime().setTargetHeapUtilization(0.25f);

        //    VMRuntime.getRuntime().setTargetHeapIdealFree(12*1024*1024);

        //    VMRuntime.getRuntime().setTargetHeapConcurrentStart(4*1024*1024);

        //}





        android.ddm.DdmHandleAppName.setAppName(data.processName);



        if (data.persistent) {