blob: 5c26f36fe889205fd1fe41aed9bbc0704d2113fe [file] [log] [blame]
/*
* Copyright (C) 2015 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.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.CancellationException;
import java.util.concurrent.TimeoutException;
public class Main {
// Workaround for b/18051191.
class InnerClass {}
private static class HashCodeQuery implements Callable<Integer> {
public HashCodeQuery(Object obj) {
m_obj = obj;
}
public Integer call() {
Integer result;
try {
Class<?> c = Class.forName("Test");
Method m = c.getMethod("synchronizedHashCode", Object.class);
result = (Integer) m.invoke(null, m_obj);
} catch (Exception e) {
System.out.println("Hash code query exception");
e.printStackTrace(System.out);
result = -1;
}
return result;
}
private Object m_obj;
private int m_index;
}
public static void main(String args[]) throws Exception {
Object obj = new Object();
int numThreads = 10;
ExecutorService pool = Executors.newFixedThreadPool(numThreads);
List<HashCodeQuery> queries = new ArrayList<HashCodeQuery>(numThreads);
for (int i = 0; i < numThreads; ++i) {
queries.add(new HashCodeQuery(obj));
}
try {
List<Future<Integer>> results = pool.invokeAll(queries);
int hash = obj.hashCode();
for (int i = 0; i < numThreads; ++i) {
int result = results.get(i).get();
if (hash != result) {
throw new Error("Query #" + i + " wrong. Expected " + hash + ", got " + result);
}
}
pool.shutdown();
} catch (CancellationException ex) {
System.out.println("Job timeout");
System.exit(1);
}
}
}