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ActiveMQ example source code file (TaskRunnerTest.java)
The ActiveMQ TaskRunnerTest.java source code/** * 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); } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ TaskRunnerTest.java source code file: |
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