| /* |
| * 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.sling.commons.threads.impl; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.ArrayBlockingQueue; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.RejectedExecutionHandler; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.sling.commons.threads.impl.ThreadLocalChangeListener.Mode; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.ArgumentMatchers; |
| import org.mockito.Mock; |
| import org.mockito.Mockito; |
| import org.mockito.junit.MockitoJUnitRunner; |
| |
| @RunWith(MockitoJUnitRunner.class) |
| public class ThreadPoolExecutorCleaningThreadLocalsTest { |
| |
| public ThreadPoolExecutorCleaningThreadLocals pool; |
| |
| @Mock |
| public ThreadLocalChangeListener listener; |
| |
| |
| @Before |
| public void setUp() { |
| final BlockingQueue<Runnable> queue = new ArrayBlockingQueue<Runnable>(20); |
| final RejectedExecutionHandler rejectionHandler = new ThreadPoolExecutor.AbortPolicy(); |
| pool = new ThreadPoolExecutorCleaningThreadLocals( |
| 1, 1, 100, TimeUnit.MILLISECONDS, |
| queue, Executors.defaultThreadFactory(), rejectionHandler, listener); |
| Mockito.when(listener.isEnabled()).thenReturn(true); |
| } |
| |
| @Test(timeout = 10000) |
| public void threadLocalCleanupWorksWithResize() throws Exception { |
| |
| // configure thread local counts to make sure that |
| // 1. the ThreadLocalMap is initialized with the default size |
| // 2. the ThreadLocalMap size is expanded |
| int[] tlcount = new int[] { 16, 32 }; |
| for (int count : tlcount) { |
| Future<?> result = pool.submit(new RunnableImplementation(count)); |
| result.get(); |
| } |
| } |
| |
| @Test(timeout = 10000) |
| public void testThreadLocalBeingCleanedUp() throws InterruptedException, ExecutionException { |
| assertTaskDoesNotSeeOldThreadLocals("test"); |
| assertTaskDoesNotSeeOldThreadLocals("test2"); |
| // verify mock interactions (at least the additions from the first task should be visible to the listener now) |
| Mockito.verify(listener).changed(ArgumentMatchers.eq(Mode.ADDED), ArgumentMatchers.any(Thread.class), ArgumentMatchers.eq(ThreadLocalTask.threadLocalVariable), ArgumentMatchers.eq("test")); |
| // no thread locals should have been removed |
| Mockito.verify(listener, Mockito.times(0)).changed(ArgumentMatchers.eq(Mode.REMOVED), ArgumentMatchers.any(Thread.class), ArgumentMatchers.eq(ThreadLocalTask.threadLocalVariable), ArgumentMatchers.anyString()); |
| } |
| |
| private void assertTaskDoesNotSeeOldThreadLocals(String value) throws InterruptedException, ExecutionException { |
| ThreadLocalTask task = new ThreadLocalTask(value); |
| pool.submit(task).get(); |
| Assert.assertNull(task.getOldValue()); |
| } |
| |
| private static class RunnableImplementation implements Runnable { |
| private final int threadLocalCount; |
| private final List<ThreadLocal<String>> threadLocals = new ArrayList<>(); |
| |
| |
| public RunnableImplementation(int threadLocalCount) { |
| this.threadLocalCount = threadLocalCount; |
| } |
| |
| @Override |
| public void run() { |
| for ( int i = 0 ; i < threadLocalCount; i++) { |
| ThreadLocal<String> tl = new ThreadLocal<>(); |
| tl.set("val"); |
| |
| threadLocals.add(tl); |
| } |
| |
| for ( ThreadLocal<String> tl : threadLocals ) { |
| String val = tl.get(); |
| val.toString(); |
| } |
| } |
| } |
| |
| private static class ThreadLocalTask implements Runnable { |
| static final ThreadLocal<String> threadLocalVariable = new ThreadLocal<String>(); |
| |
| private final String newValue; |
| private volatile String oldValue; |
| |
| public ThreadLocalTask(String newValue) { |
| this.newValue = newValue; |
| } |
| |
| @Override |
| public void run() { |
| oldValue = threadLocalVariable.get(); |
| // set thread local to a new value |
| threadLocalVariable.set(newValue); |
| } |
| |
| public String getOldValue() { |
| return oldValue; |
| } |
| } |
| } |
| |