| /* |
| * 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.servicecomb.core.executor; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.RejectedExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.function.IntSupplier; |
| |
| import org.junit.Test; |
| import org.junit.jupiter.api.Assertions; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class TestThreadPoolExecutorEx { |
| private static final Logger LOGGER = LoggerFactory.getLogger(TestThreadPoolExecutorEx.class); |
| |
| static class TestTask implements Runnable { |
| CountDownLatch notify = new CountDownLatch(1); |
| |
| Future<?> future; |
| |
| public void quit() throws ExecutionException, InterruptedException { |
| notify.countDown(); |
| future.get(); |
| } |
| |
| @Override |
| public void run() { |
| try { |
| notify.await(); |
| } catch (InterruptedException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| } |
| |
| ThreadPoolExecutorEx executorEx = new ThreadPoolExecutorEx(2, 4, 2, TimeUnit.SECONDS, |
| new LinkedBlockingQueueEx(2), Executors.defaultThreadFactory()); |
| |
| public TestTask submitTask() { |
| TestTask task = new TestTask(); |
| task.future = executorEx.submit(task); |
| return task; |
| } |
| |
| @Test |
| public void schedule() throws ExecutionException, InterruptedException { |
| // init |
| Assertions.assertEquals(0, executorEx.getPoolSize()); |
| Assertions.assertEquals(0, executorEx.getRejectedCount()); |
| Assertions.assertEquals(0, executorEx.getNotFinished()); |
| Assertions.assertEquals(0, executorEx.getQueue().size()); |
| |
| // use core threads |
| TestTask t1 = submitTask(); |
| Assertions.assertEquals(1, executorEx.getPoolSize()); |
| Assertions.assertEquals(0, executorEx.getRejectedCount()); |
| Assertions.assertEquals(1, executorEx.getNotFinished()); |
| Assertions.assertEquals(0, executorEx.getQueue().size()); |
| |
| TestTask t2 = submitTask(); |
| Assertions.assertEquals(2, executorEx.getPoolSize()); |
| Assertions.assertEquals(0, executorEx.getRejectedCount()); |
| Assertions.assertEquals(2, executorEx.getNotFinished()); |
| Assertions.assertEquals(0, executorEx.getQueue().size()); |
| |
| // extend threads |
| TestTask t3 = submitTask(); |
| Assertions.assertEquals(3, executorEx.getPoolSize()); |
| Assertions.assertEquals(0, executorEx.getRejectedCount()); |
| Assertions.assertEquals(3, executorEx.getNotFinished()); |
| Assertions.assertEquals(0, executorEx.getQueue().size()); |
| |
| TestTask t4 = submitTask(); |
| Assertions.assertEquals(4, executorEx.getPoolSize()); |
| Assertions.assertEquals(0, executorEx.getRejectedCount()); |
| Assertions.assertEquals(4, executorEx.getNotFinished()); |
| Assertions.assertEquals(0, executorEx.getQueue().size()); |
| |
| // queue the tasks |
| TestTask t5 = submitTask(); |
| Assertions.assertEquals(4, executorEx.getPoolSize()); |
| Assertions.assertEquals(0, executorEx.getRejectedCount()); |
| Assertions.assertEquals(5, executorEx.getNotFinished()); |
| Assertions.assertEquals(1, executorEx.getQueue().size()); |
| |
| TestTask t6 = submitTask(); |
| Assertions.assertEquals(4, executorEx.getPoolSize()); |
| Assertions.assertEquals(0, executorEx.getRejectedCount()); |
| Assertions.assertEquals(6, executorEx.getNotFinished()); |
| Assertions.assertEquals(2, executorEx.getQueue().size()); |
| |
| // reject the task |
| try { |
| submitTask(); |
| } catch (RejectedExecutionException e) { |
| |
| } |
| Assertions.assertEquals(4, executorEx.getPoolSize()); |
| Assertions.assertEquals(1, executorEx.getRejectedCount()); |
| Assertions.assertEquals(6, executorEx.getNotFinished()); |
| Assertions.assertEquals(2, executorEx.getQueue().size()); |
| |
| // t1/t2/t3 finish |
| t1.quit(); |
| t2.quit(); |
| t3.quit(); |
| Assertions.assertEquals(4, executorEx.getPoolSize()); |
| Assertions.assertEquals(1, executorEx.getRejectedCount()); |
| waitForResult(3, executorEx::getNotFinished); |
| waitForResult(0, executorEx.getQueue()::size); |
| |
| // reuse thread |
| t3 = submitTask(); |
| Assertions.assertEquals(4, executorEx.getPoolSize()); |
| Assertions.assertEquals(1, executorEx.getRejectedCount()); |
| waitForResult(4, executorEx::getNotFinished); |
| waitForResult(0, executorEx.getQueue()::size); |
| |
| t3.quit(); |
| t4.quit(); |
| t5.quit(); |
| t6.quit(); |
| waitForResult(2, executorEx::getPoolSize); |
| executorEx.shutdown(); |
| } |
| |
| private void waitForResult(int expect, IntSupplier supplier) { |
| long max = 30000; |
| long waited = 0; |
| |
| for (; ; ) { |
| if (waited > max) { |
| throw new IllegalStateException("timed out waiting."); |
| } |
| int actual = supplier.getAsInt(); |
| if (expect == actual) { |
| return; |
| } |
| |
| LOGGER.info("waiting for thread result, expect:{}, actual: {}.", expect, actual); |
| try { |
| TimeUnit.MILLISECONDS.sleep(200); |
| waited += 200; |
| } catch (InterruptedException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| } |
| } |