/*
|
|
* Copyright (C) 2016 The Android Open Source Project
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*/
|
|
import java.lang.reflect.Method;
|
import java.util.Map;
|
|
import dalvik.system.VMDebug;
|
|
public class Main implements Runnable {
|
static final int numberOfThreads = 4;
|
static final int totalOperations = 1000;
|
static final int maxStackDepth = 128;
|
static Method enableAllocTrackingMethod;
|
static Object holder;
|
static volatile boolean trackingThreadDone = false;
|
int threadIndex;
|
|
Main(int index) {
|
threadIndex = index;
|
}
|
|
public static void main(String[] args) throws Exception {
|
Class<?> klass = Class.forName("org.apache.harmony.dalvik.ddmc.DdmVmInternal");
|
if (klass == null) {
|
throw new AssertionError("Couldn't find DdmVmInternal class");
|
}
|
enableAllocTrackingMethod = klass.getDeclaredMethod("enableRecentAllocations",
|
Boolean.TYPE);
|
if (enableAllocTrackingMethod == null) {
|
throw new AssertionError("Couldn't find enableRecentAllocations method");
|
}
|
|
final Thread[] threads = new Thread[numberOfThreads];
|
for (int t = 0; t < threads.length; t++) {
|
threads[t] = new Thread(new Main(t));
|
threads[t].start();
|
}
|
for (Thread t : threads) {
|
t.join();
|
}
|
System.out.println("Finishing");
|
}
|
|
public void run() {
|
if (threadIndex == 0) {
|
for (int i = 0; i < totalOperations; ++i) {
|
try {
|
VMDebug.setAllocTrackerStackDepth(i % (maxStackDepth + 1));
|
enableAllocTrackingMethod.invoke(null, true);
|
holder = new Object();
|
enableAllocTrackingMethod.invoke(null, false);
|
} catch (Exception e) {
|
System.out.println(e);
|
return;
|
}
|
}
|
trackingThreadDone = true;
|
} else {
|
while (!trackingThreadDone) {
|
holder = new Object();
|
}
|
}
|
}
|
}
|
