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