org.apache.hive.testutils.junit.runners.ConcurrentTestRunner Maven / Gradle / Ivy
/*
* Copyright (c) 2009-2012, toby weston & tempus-fugit committers
*
* 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.
*/
/*
*
*/
package org.apache.hive.testutils.junit.runners;
import static java.util.concurrent.Executors.newFixedThreadPool;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.hive.testutils.junit.runners.model.ConcurrentScheduler;
import org.junit.runners.BlockJUnit4ClassRunner;
import org.junit.runners.model.InitializationError;
/**
* Originally taken from com.google.code.tempusfugit.concurrency.ConcurrentTestRunner
*/
public class ConcurrentTestRunner extends BlockJUnit4ClassRunner {
private int numThreads = 1;
public ConcurrentTestRunner(Class> type) throws InitializationError {
super(type);
String numThreadsProp = System.getProperty("test.concurrency.num.threads");
if (numThreadsProp != null) {
numThreads = Integer.valueOf(numThreadsProp);
}
setScheduler(new ConcurrentScheduler(newFixedThreadPool(numThreads, new ConcurrentTestRunnerThreadFactory())));
System.err.println(">>> ConcurrenTestRunner initialize with " + numThreads + " threads");
System.err.flush();
}
private static class ConcurrentTestRunnerThreadFactory implements ThreadFactory {
private final AtomicLong count = new AtomicLong();
public Thread newThread(Runnable runnable) {
String threadName = ConcurrentTestRunner.class.getSimpleName() + "-Thread-" + count.getAndIncrement();
System.err.println(">>> ConcurrentTestRunner.newThread " + threadName);
System.err.flush();
return new Thread(runnable, threadName);
}
}
}
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