blob: fff8e5860686fa001f3e40262d7dba93cfd8a388 [file] [log] [blame]
/*
* Copyright (C) 2017 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.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
public class Main {
static final int numberOfThreads = 5;
static final int totalOperations = 10000;
final static Object lockObject = new Object();
static SimpleInterface inf;
static volatile boolean finish = false;
public static void main(String[] args) throws Exception {
inf = (SimpleInterface)Proxy.newProxyInstance(SimpleInterface.class.getClassLoader(),
new Class[] { SimpleInterface.class }, new EmptyInvocationHandler());
Thread garbageThread = new Thread(new GarbageRunner());
garbageThread.start();
final Thread[] threads = new Thread[numberOfThreads];
for (int t = 0; t < threads.length; t++) {
threads[t] = new Thread((t % 2 == 0) ? new ProxyRunner() : new SyncRunner());
}
for (Thread t : threads) {
t.start();
}
// Now wait.
for (Thread t : threads) {
t.join();
}
finish = true;
garbageThread.join();
}
private static interface SimpleInterface {
// Add some primitives to force some allocation when calling.
public void foo(int i1, int i2, int i3, int i4, int i5, int i6);
}
private static class EmptyInvocationHandler implements InvocationHandler {
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
return null;
}
}
private static class ProxyRunner implements Runnable {
public void run() {
int count = totalOperations;
while (count > 0) {
synchronized (lockObject) {
try {
inf.foo(10000 - count, 11000 - count, 12000 - count, 13000 - count,
14000 - count, 15000 - count);
} catch (OutOfMemoryError e) {
// Ignore errors. This is the test for b/69121347 - see an exception
// instead of native abort.
}
}
count--;
}
}
}
private static class SyncRunner implements Runnable {
public void run() {
int count = totalOperations;
while (count > 0) {
synchronized (lockObject) {
// "Wait" a small amount of time.
long start = System.nanoTime();
long delta = 10 * 1000; // 10 us.
long elapsed;
do {
elapsed = System.nanoTime();
} while (elapsed - start < delta);
}
count--;
}
}
}
private static class GarbageRunner implements Runnable {
public void run() {
while (!finish) {
// Some random allocations adding up to almost 2M.
for (int i = 0; i < 188; i++) {
try {
byte b[] = new byte[i * 100 + 10];
} catch (OutOfMemoryError e) {
// Ignore. This is just to improve chances that an OOME is thrown during
// proxy invocation.
}
}
try {
Thread.sleep(10);
} catch (Exception e) {
}
}
}
}
}