| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.activemq.thread; |
| |
| import java.util.concurrent.BrokenBarrierException; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.CyclicBarrier; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import junit.framework.TestCase; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class TaskRunnerTest extends TestCase { |
| private static final Logger LOG = LoggerFactory.getLogger(TaskRunnerTest.class); |
| |
| public void testWakeupPooled() throws InterruptedException, BrokenBarrierException { |
| System.setProperty("org.apache.activemq.UseDedicatedTaskRunner", "false"); |
| doTestWakeup(); |
| } |
| |
| public void testWakeupDedicated() throws InterruptedException, BrokenBarrierException { |
| System.setProperty("org.apache.activemq.UseDedicatedTaskRunner", "true"); |
| doTestWakeup(); |
| } |
| |
| /** |
| * Simulate multiple threads queuing work for the TaskRunner. The Task |
| * Runner dequeues the work. |
| * |
| * @throws InterruptedException |
| * @throws BrokenBarrierException |
| */ |
| public void doTestWakeup() throws InterruptedException, BrokenBarrierException { |
| |
| final int enqueueCount = 100000; |
| final AtomicInteger iterations = new AtomicInteger(0); |
| final AtomicInteger counter = new AtomicInteger(0); |
| final AtomicInteger queue = new AtomicInteger(0); |
| final CountDownLatch doneCountDownLatch = new CountDownLatch(1); |
| |
| TaskRunnerFactory factory = new TaskRunnerFactory(); |
| final TaskRunner runner = factory.createTaskRunner(new Task() { |
| public boolean iterate() { |
| if (queue.get() == 0) { |
| return false; |
| } else { |
| while (queue.get() > 0) { |
| queue.decrementAndGet(); |
| counter.incrementAndGet(); |
| } |
| iterations.incrementAndGet(); |
| if (counter.get() == enqueueCount) { |
| doneCountDownLatch.countDown(); |
| } |
| return true; |
| } |
| } |
| }, "Thread Name"); |
| |
| long start = System.currentTimeMillis(); |
| final int workerCount = 5; |
| final CyclicBarrier barrier = new CyclicBarrier(workerCount + 1); |
| for (int i = 0; i < workerCount; i++) { |
| new Thread() { |
| public void run() { |
| try { |
| barrier.await(); |
| for (int i = 0; i < enqueueCount / workerCount; i++) { |
| queue.incrementAndGet(); |
| runner.wakeup(); |
| yield(); |
| } |
| } catch (BrokenBarrierException e) { |
| } catch (InterruptedException e) { |
| } |
| } |
| }.start(); |
| } |
| barrier.await(); |
| |
| boolean b = doneCountDownLatch.await(30, TimeUnit.SECONDS); |
| long end = System.currentTimeMillis(); |
| LOG.info("Iterations: " + iterations.get()); |
| LOG.info("counter: " + counter.get()); |
| LOG.info("Dequeues/s: " + (1000.0 * enqueueCount / (end - start))); |
| LOG.info("duration: " + ((end - start) / 1000.0)); |
| assertTrue(b); |
| |
| runner.shutdown(); |
| } |
| |
| public static void main(String[] args) { |
| junit.textui.TestRunner.run(TaskRunnerTest.class); |
| } |
| |
| } |