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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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|
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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import static java.util.concurrent.TimeUnit.SECONDS; |
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|
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.List; |
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import java.util.concurrent.ArrayBlockingQueue; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.CancellationException; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.FutureTask; |
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import java.util.concurrent.LinkedBlockingQueue; |
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import java.util.concurrent.RejectedExecutionException; |
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import java.util.concurrent.RejectedExecutionHandler; |
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import java.util.concurrent.SynchronousQueue; |
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import java.util.concurrent.ThreadFactory; |
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import java.util.concurrent.ThreadLocalRandom; |
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import java.util.concurrent.ThreadPoolExecutor; |
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import java.util.concurrent.ThreadPoolExecutor.AbortPolicy; |
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import java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy; |
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import java.util.concurrent.ThreadPoolExecutor.DiscardPolicy; |
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import java.util.concurrent.ThreadPoolExecutor.DiscardOldestPolicy; |
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import java.util.concurrent.atomic.AtomicInteger; |
38 |
import java.util.concurrent.atomic.AtomicReference; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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public class ThreadPoolExecutorTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(ThreadPoolExecutorTest.class); |
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} |
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|
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static class ExtendedTPE extends ThreadPoolExecutor { |
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final CountDownLatch beforeCalled = new CountDownLatch(1); |
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final CountDownLatch afterCalled = new CountDownLatch(1); |
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final CountDownLatch terminatedCalled = new CountDownLatch(1); |
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|
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public ExtendedTPE() { |
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super(1, 1, LONG_DELAY_MS, MILLISECONDS, new SynchronousQueue<Runnable>()); |
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} |
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protected void beforeExecute(Thread t, Runnable r) { |
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beforeCalled.countDown(); |
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} |
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protected void afterExecute(Runnable r, Throwable t) { |
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afterCalled.countDown(); |
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} |
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protected void terminated() { |
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terminatedCalled.countDown(); |
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} |
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|
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public boolean beforeCalled() { |
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return beforeCalled.getCount() == 0; |
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} |
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public boolean afterCalled() { |
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return afterCalled.getCount() == 0; |
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} |
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public boolean terminatedCalled() { |
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return terminatedCalled.getCount() == 0; |
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} |
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} |
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|
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static class FailingThreadFactory implements ThreadFactory { |
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int calls = 0; |
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public Thread newThread(Runnable r) { |
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if (++calls > 1) return null; |
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return new Thread(r); |
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} |
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} |
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|
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/** |
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* execute successfully executes a runnable |
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*/ |
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public void testExecute() throws InterruptedException { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 1, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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final CountDownLatch done = new CountDownLatch(1); |
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final Runnable task = new CheckedRunnable() { |
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public void realRun() { done.countDown(); }}; |
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p.execute(task); |
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await(done); |
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} |
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} |
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|
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/** |
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* getActiveCount increases but doesn't overestimate, when a |
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* thread becomes active |
108 |
*/ |
109 |
public void testGetActiveCount() throws InterruptedException { |
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final CountDownLatch done = new CountDownLatch(1); |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(2, 2, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p, done)) { |
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final CountDownLatch threadStarted = new CountDownLatch(1); |
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assertEquals(0, p.getActiveCount()); |
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p.execute(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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threadStarted.countDown(); |
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assertEquals(1, p.getActiveCount()); |
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await(done); |
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}}); |
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await(threadStarted); |
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assertEquals(1, p.getActiveCount()); |
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} |
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} |
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|
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/** |
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* prestartCoreThread starts a thread if under corePoolSize, else doesn't |
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*/ |
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public void testPrestartCoreThread() { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(2, 6, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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assertEquals(0, p.getPoolSize()); |
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assertTrue(p.prestartCoreThread()); |
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assertEquals(1, p.getPoolSize()); |
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assertTrue(p.prestartCoreThread()); |
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assertEquals(2, p.getPoolSize()); |
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assertFalse(p.prestartCoreThread()); |
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assertEquals(2, p.getPoolSize()); |
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p.setCorePoolSize(4); |
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assertTrue(p.prestartCoreThread()); |
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assertEquals(3, p.getPoolSize()); |
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assertTrue(p.prestartCoreThread()); |
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assertEquals(4, p.getPoolSize()); |
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assertFalse(p.prestartCoreThread()); |
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assertEquals(4, p.getPoolSize()); |
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} |
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} |
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|
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/** |
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* prestartAllCoreThreads starts all corePoolSize threads |
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*/ |
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public void testPrestartAllCoreThreads() { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(2, 6, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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assertEquals(0, p.getPoolSize()); |
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p.prestartAllCoreThreads(); |
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assertEquals(2, p.getPoolSize()); |
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p.prestartAllCoreThreads(); |
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assertEquals(2, p.getPoolSize()); |
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p.setCorePoolSize(4); |
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p.prestartAllCoreThreads(); |
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assertEquals(4, p.getPoolSize()); |
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p.prestartAllCoreThreads(); |
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assertEquals(4, p.getPoolSize()); |
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} |
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} |
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|
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/** |
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* getCompletedTaskCount increases, but doesn't overestimate, |
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* when tasks complete |
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*/ |
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public void testGetCompletedTaskCount() throws InterruptedException { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(2, 2, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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final CountDownLatch threadStarted = new CountDownLatch(1); |
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final CountDownLatch threadProceed = new CountDownLatch(1); |
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final CountDownLatch threadDone = new CountDownLatch(1); |
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assertEquals(0, p.getCompletedTaskCount()); |
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p.execute(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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threadStarted.countDown(); |
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assertEquals(0, p.getCompletedTaskCount()); |
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await(threadProceed); |
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threadDone.countDown(); |
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}}); |
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await(threadStarted); |
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assertEquals(0, p.getCompletedTaskCount()); |
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threadProceed.countDown(); |
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await(threadDone); |
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long startTime = System.nanoTime(); |
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while (p.getCompletedTaskCount() != 1) { |
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if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
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fail("timed out"); |
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Thread.yield(); |
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} |
208 |
} |
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} |
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|
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/** |
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* getCorePoolSize returns size given in constructor if not otherwise set |
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*/ |
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public void testGetCorePoolSize() { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 1, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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assertEquals(1, p.getCorePoolSize()); |
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} |
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} |
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|
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/** |
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* getKeepAliveTime returns value given in constructor if not otherwise set |
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*/ |
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public void testGetKeepAliveTime() { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(2, 2, |
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1000, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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assertEquals(1, p.getKeepAliveTime(SECONDS)); |
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} |
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} |
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|
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/** |
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* getThreadFactory returns factory in constructor if not set |
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*/ |
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public void testGetThreadFactory() { |
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ThreadFactory threadFactory = new SimpleThreadFactory(); |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 2, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10), |
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threadFactory, |
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new NoOpREHandler()); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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assertSame(threadFactory, p.getThreadFactory()); |
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} |
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} |
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|
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/** |
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* setThreadFactory sets the thread factory returned by getThreadFactory |
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*/ |
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public void testSetThreadFactory() { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 2, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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ThreadFactory threadFactory = new SimpleThreadFactory(); |
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p.setThreadFactory(threadFactory); |
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assertSame(threadFactory, p.getThreadFactory()); |
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} |
266 |
} |
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|
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/** |
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* setThreadFactory(null) throws NPE |
270 |
*/ |
271 |
public void testSetThreadFactoryNull() { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 2, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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try { |
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p.setThreadFactory(null); |
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shouldThrow(); |
280 |
} catch (NullPointerException success) {} |
281 |
} |
282 |
} |
283 |
|
284 |
/** |
285 |
* The default rejected execution handler is AbortPolicy. |
286 |
*/ |
287 |
public void testDefaultRejectedExecutionHandler() { |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 2, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10)); |
292 |
try (PoolCleaner cleaner = cleaner(p)) { |
293 |
assertTrue(p.getRejectedExecutionHandler() instanceof AbortPolicy); |
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} |
295 |
} |
296 |
|
297 |
/** |
298 |
* getRejectedExecutionHandler returns handler in constructor if not set |
299 |
*/ |
300 |
public void testGetRejectedExecutionHandler() { |
301 |
final RejectedExecutionHandler handler = new NoOpREHandler(); |
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final ThreadPoolExecutor p = |
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new ThreadPoolExecutor(1, 2, |
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LONG_DELAY_MS, MILLISECONDS, |
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new ArrayBlockingQueue<Runnable>(10), |
306 |
handler); |
307 |
try (PoolCleaner cleaner = cleaner(p)) { |
308 |
assertSame(handler, p.getRejectedExecutionHandler()); |
309 |
} |
310 |
} |
311 |
|
312 |
/** |
313 |
* setRejectedExecutionHandler sets the handler returned by |
314 |
* getRejectedExecutionHandler |
315 |
*/ |
316 |
public void testSetRejectedExecutionHandler() { |
317 |
final ThreadPoolExecutor p = |
318 |
new ThreadPoolExecutor(1, 2, |
319 |
LONG_DELAY_MS, MILLISECONDS, |
320 |
new ArrayBlockingQueue<Runnable>(10)); |
321 |
try (PoolCleaner cleaner = cleaner(p)) { |
322 |
RejectedExecutionHandler handler = new NoOpREHandler(); |
323 |
p.setRejectedExecutionHandler(handler); |
324 |
assertSame(handler, p.getRejectedExecutionHandler()); |
325 |
} |
326 |
} |
327 |
|
328 |
/** |
329 |
* setRejectedExecutionHandler(null) throws NPE |
330 |
*/ |
331 |
public void testSetRejectedExecutionHandlerNull() { |
332 |
final ThreadPoolExecutor p = |
333 |
new ThreadPoolExecutor(1, 2, |
334 |
LONG_DELAY_MS, MILLISECONDS, |
335 |
new ArrayBlockingQueue<Runnable>(10)); |
336 |
try (PoolCleaner cleaner = cleaner(p)) { |
337 |
try { |
338 |
p.setRejectedExecutionHandler(null); |
339 |
shouldThrow(); |
340 |
} catch (NullPointerException success) {} |
341 |
} |
342 |
} |
343 |
|
344 |
/** |
345 |
* getLargestPoolSize increases, but doesn't overestimate, when |
346 |
* multiple threads active |
347 |
*/ |
348 |
public void testGetLargestPoolSize() throws InterruptedException { |
349 |
final int THREADS = 3; |
350 |
final CountDownLatch done = new CountDownLatch(1); |
351 |
final ThreadPoolExecutor p = |
352 |
new ThreadPoolExecutor(THREADS, THREADS, |
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LONG_DELAY_MS, MILLISECONDS, |
354 |
new ArrayBlockingQueue<Runnable>(10)); |
355 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
356 |
assertEquals(0, p.getLargestPoolSize()); |
357 |
final CountDownLatch threadsStarted = new CountDownLatch(THREADS); |
358 |
for (int i = 0; i < THREADS; i++) |
359 |
p.execute(new CheckedRunnable() { |
360 |
public void realRun() throws InterruptedException { |
361 |
threadsStarted.countDown(); |
362 |
await(done); |
363 |
assertEquals(THREADS, p.getLargestPoolSize()); |
364 |
}}); |
365 |
await(threadsStarted); |
366 |
assertEquals(THREADS, p.getLargestPoolSize()); |
367 |
} |
368 |
assertEquals(THREADS, p.getLargestPoolSize()); |
369 |
} |
370 |
|
371 |
/** |
372 |
* getMaximumPoolSize returns value given in constructor if not |
373 |
* otherwise set |
374 |
*/ |
375 |
public void testGetMaximumPoolSize() { |
376 |
final ThreadPoolExecutor p = |
377 |
new ThreadPoolExecutor(2, 3, |
378 |
LONG_DELAY_MS, MILLISECONDS, |
379 |
new ArrayBlockingQueue<Runnable>(10)); |
380 |
try (PoolCleaner cleaner = cleaner(p)) { |
381 |
assertEquals(3, p.getMaximumPoolSize()); |
382 |
p.setMaximumPoolSize(5); |
383 |
assertEquals(5, p.getMaximumPoolSize()); |
384 |
p.setMaximumPoolSize(4); |
385 |
assertEquals(4, p.getMaximumPoolSize()); |
386 |
} |
387 |
} |
388 |
|
389 |
/** |
390 |
* getPoolSize increases, but doesn't overestimate, when threads |
391 |
* become active |
392 |
*/ |
393 |
public void testGetPoolSize() throws InterruptedException { |
394 |
final CountDownLatch done = new CountDownLatch(1); |
395 |
final ThreadPoolExecutor p = |
396 |
new ThreadPoolExecutor(1, 1, |
397 |
LONG_DELAY_MS, MILLISECONDS, |
398 |
new ArrayBlockingQueue<Runnable>(10)); |
399 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
400 |
assertEquals(0, p.getPoolSize()); |
401 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
402 |
p.execute(new CheckedRunnable() { |
403 |
public void realRun() throws InterruptedException { |
404 |
threadStarted.countDown(); |
405 |
assertEquals(1, p.getPoolSize()); |
406 |
await(done); |
407 |
}}); |
408 |
await(threadStarted); |
409 |
assertEquals(1, p.getPoolSize()); |
410 |
} |
411 |
} |
412 |
|
413 |
/** |
414 |
* getTaskCount increases, but doesn't overestimate, when tasks submitted |
415 |
*/ |
416 |
public void testGetTaskCount() throws InterruptedException { |
417 |
final int TASKS = 3; |
418 |
final CountDownLatch done = new CountDownLatch(1); |
419 |
final ThreadPoolExecutor p = |
420 |
new ThreadPoolExecutor(1, 1, |
421 |
LONG_DELAY_MS, MILLISECONDS, |
422 |
new ArrayBlockingQueue<Runnable>(10)); |
423 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
424 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
425 |
assertEquals(0, p.getTaskCount()); |
426 |
assertEquals(0, p.getCompletedTaskCount()); |
427 |
p.execute(new CheckedRunnable() { |
428 |
public void realRun() throws InterruptedException { |
429 |
threadStarted.countDown(); |
430 |
await(done); |
431 |
}}); |
432 |
await(threadStarted); |
433 |
assertEquals(1, p.getTaskCount()); |
434 |
assertEquals(0, p.getCompletedTaskCount()); |
435 |
for (int i = 0; i < TASKS; i++) { |
436 |
assertEquals(1 + i, p.getTaskCount()); |
437 |
p.execute(new CheckedRunnable() { |
438 |
public void realRun() throws InterruptedException { |
439 |
threadStarted.countDown(); |
440 |
assertEquals(1 + TASKS, p.getTaskCount()); |
441 |
await(done); |
442 |
}}); |
443 |
} |
444 |
assertEquals(1 + TASKS, p.getTaskCount()); |
445 |
assertEquals(0, p.getCompletedTaskCount()); |
446 |
} |
447 |
assertEquals(1 + TASKS, p.getTaskCount()); |
448 |
assertEquals(1 + TASKS, p.getCompletedTaskCount()); |
449 |
} |
450 |
|
451 |
/** |
452 |
* isShutdown is false before shutdown, true after |
453 |
*/ |
454 |
public void testIsShutdown() { |
455 |
final ThreadPoolExecutor p = |
456 |
new ThreadPoolExecutor(1, 1, |
457 |
LONG_DELAY_MS, MILLISECONDS, |
458 |
new ArrayBlockingQueue<Runnable>(10)); |
459 |
try (PoolCleaner cleaner = cleaner(p)) { |
460 |
assertFalse(p.isShutdown()); |
461 |
try { p.shutdown(); } catch (SecurityException ok) { return; } |
462 |
assertTrue(p.isShutdown()); |
463 |
} |
464 |
} |
465 |
|
466 |
/** |
467 |
* awaitTermination on a non-shutdown pool times out |
468 |
*/ |
469 |
public void testAwaitTermination_timesOut() throws InterruptedException { |
470 |
final ThreadPoolExecutor p = |
471 |
new ThreadPoolExecutor(1, 1, |
472 |
LONG_DELAY_MS, MILLISECONDS, |
473 |
new ArrayBlockingQueue<Runnable>(10)); |
474 |
try (PoolCleaner cleaner = cleaner(p)) { |
475 |
assertFalse(p.isTerminated()); |
476 |
assertFalse(p.awaitTermination(Long.MIN_VALUE, NANOSECONDS)); |
477 |
assertFalse(p.awaitTermination(Long.MIN_VALUE, MILLISECONDS)); |
478 |
assertFalse(p.awaitTermination(-1L, NANOSECONDS)); |
479 |
assertFalse(p.awaitTermination(-1L, MILLISECONDS)); |
480 |
assertFalse(p.awaitTermination(randomExpiredTimeout(), |
481 |
randomTimeUnit())); |
482 |
long timeoutNanos = 999999L; |
483 |
long startTime = System.nanoTime(); |
484 |
assertFalse(p.awaitTermination(timeoutNanos, NANOSECONDS)); |
485 |
assertTrue(System.nanoTime() - startTime >= timeoutNanos); |
486 |
assertFalse(p.isTerminated()); |
487 |
startTime = System.nanoTime(); |
488 |
long timeoutMillis = timeoutMillis(); |
489 |
assertFalse(p.awaitTermination(timeoutMillis, MILLISECONDS)); |
490 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
491 |
assertFalse(p.isTerminated()); |
492 |
try { p.shutdown(); } catch (SecurityException ok) { return; } |
493 |
assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
494 |
assertTrue(p.isTerminated()); |
495 |
} |
496 |
} |
497 |
|
498 |
/** |
499 |
* isTerminated is false before termination, true after |
500 |
*/ |
501 |
public void testIsTerminated() throws InterruptedException { |
502 |
final ThreadPoolExecutor p = |
503 |
new ThreadPoolExecutor(1, 1, |
504 |
LONG_DELAY_MS, MILLISECONDS, |
505 |
new ArrayBlockingQueue<Runnable>(10)); |
506 |
try (PoolCleaner cleaner = cleaner(p)) { |
507 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
508 |
final CountDownLatch done = new CountDownLatch(1); |
509 |
assertFalse(p.isTerminating()); |
510 |
p.execute(new CheckedRunnable() { |
511 |
public void realRun() throws InterruptedException { |
512 |
assertFalse(p.isTerminating()); |
513 |
threadStarted.countDown(); |
514 |
await(done); |
515 |
}}); |
516 |
await(threadStarted); |
517 |
assertFalse(p.isTerminating()); |
518 |
done.countDown(); |
519 |
try { p.shutdown(); } catch (SecurityException ok) { return; } |
520 |
assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
521 |
assertTrue(p.isTerminated()); |
522 |
assertFalse(p.isTerminating()); |
523 |
} |
524 |
} |
525 |
|
526 |
/** |
527 |
* isTerminating is not true when running or when terminated |
528 |
*/ |
529 |
public void testIsTerminating() throws InterruptedException { |
530 |
final ThreadPoolExecutor p = |
531 |
new ThreadPoolExecutor(1, 1, |
532 |
LONG_DELAY_MS, MILLISECONDS, |
533 |
new ArrayBlockingQueue<Runnable>(10)); |
534 |
try (PoolCleaner cleaner = cleaner(p)) { |
535 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
536 |
final CountDownLatch done = new CountDownLatch(1); |
537 |
assertFalse(p.isTerminating()); |
538 |
p.execute(new CheckedRunnable() { |
539 |
public void realRun() throws InterruptedException { |
540 |
assertFalse(p.isTerminating()); |
541 |
threadStarted.countDown(); |
542 |
await(done); |
543 |
}}); |
544 |
await(threadStarted); |
545 |
assertFalse(p.isTerminating()); |
546 |
done.countDown(); |
547 |
try { p.shutdown(); } catch (SecurityException ok) { return; } |
548 |
assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
549 |
assertTrue(p.isTerminated()); |
550 |
assertFalse(p.isTerminating()); |
551 |
} |
552 |
} |
553 |
|
554 |
/** |
555 |
* getQueue returns the work queue, which contains queued tasks |
556 |
*/ |
557 |
public void testGetQueue() throws InterruptedException { |
558 |
final CountDownLatch done = new CountDownLatch(1); |
559 |
final BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10); |
560 |
final ThreadPoolExecutor p = |
561 |
new ThreadPoolExecutor(1, 1, |
562 |
LONG_DELAY_MS, MILLISECONDS, |
563 |
q); |
564 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
565 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
566 |
FutureTask[] tasks = new FutureTask[5]; |
567 |
for (int i = 0; i < tasks.length; i++) { |
568 |
Callable task = new CheckedCallable<Boolean>() { |
569 |
public Boolean realCall() throws InterruptedException { |
570 |
threadStarted.countDown(); |
571 |
assertSame(q, p.getQueue()); |
572 |
await(done); |
573 |
return Boolean.TRUE; |
574 |
}}; |
575 |
tasks[i] = new FutureTask(task); |
576 |
p.execute(tasks[i]); |
577 |
} |
578 |
await(threadStarted); |
579 |
assertSame(q, p.getQueue()); |
580 |
assertFalse(q.contains(tasks[0])); |
581 |
assertTrue(q.contains(tasks[tasks.length - 1])); |
582 |
assertEquals(tasks.length - 1, q.size()); |
583 |
} |
584 |
} |
585 |
|
586 |
/** |
587 |
* remove(task) removes queued task, and fails to remove active task |
588 |
*/ |
589 |
public void testRemove() throws InterruptedException { |
590 |
final CountDownLatch done = new CountDownLatch(1); |
591 |
BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10); |
592 |
final ThreadPoolExecutor p = |
593 |
new ThreadPoolExecutor(1, 1, |
594 |
LONG_DELAY_MS, MILLISECONDS, |
595 |
q); |
596 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
597 |
Runnable[] tasks = new Runnable[6]; |
598 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
599 |
for (int i = 0; i < tasks.length; i++) { |
600 |
tasks[i] = new CheckedRunnable() { |
601 |
public void realRun() throws InterruptedException { |
602 |
threadStarted.countDown(); |
603 |
await(done); |
604 |
}}; |
605 |
p.execute(tasks[i]); |
606 |
} |
607 |
await(threadStarted); |
608 |
assertFalse(p.remove(tasks[0])); |
609 |
assertTrue(q.contains(tasks[4])); |
610 |
assertTrue(q.contains(tasks[3])); |
611 |
assertTrue(p.remove(tasks[4])); |
612 |
assertFalse(p.remove(tasks[4])); |
613 |
assertFalse(q.contains(tasks[4])); |
614 |
assertTrue(q.contains(tasks[3])); |
615 |
assertTrue(p.remove(tasks[3])); |
616 |
assertFalse(q.contains(tasks[3])); |
617 |
} |
618 |
} |
619 |
|
620 |
/** |
621 |
* purge removes cancelled tasks from the queue |
622 |
*/ |
623 |
public void testPurge() throws InterruptedException { |
624 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
625 |
final CountDownLatch done = new CountDownLatch(1); |
626 |
final BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10); |
627 |
final ThreadPoolExecutor p = |
628 |
new ThreadPoolExecutor(1, 1, |
629 |
LONG_DELAY_MS, MILLISECONDS, |
630 |
q); |
631 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
632 |
FutureTask[] tasks = new FutureTask[5]; |
633 |
for (int i = 0; i < tasks.length; i++) { |
634 |
Callable task = new CheckedCallable<Boolean>() { |
635 |
public Boolean realCall() throws InterruptedException { |
636 |
threadStarted.countDown(); |
637 |
await(done); |
638 |
return Boolean.TRUE; |
639 |
}}; |
640 |
tasks[i] = new FutureTask(task); |
641 |
p.execute(tasks[i]); |
642 |
} |
643 |
await(threadStarted); |
644 |
assertEquals(tasks.length, p.getTaskCount()); |
645 |
assertEquals(tasks.length - 1, q.size()); |
646 |
assertEquals(1L, p.getActiveCount()); |
647 |
assertEquals(0L, p.getCompletedTaskCount()); |
648 |
tasks[4].cancel(true); |
649 |
tasks[3].cancel(false); |
650 |
p.purge(); |
651 |
assertEquals(tasks.length - 3, q.size()); |
652 |
assertEquals(tasks.length - 2, p.getTaskCount()); |
653 |
p.purge(); // Nothing to do |
654 |
assertEquals(tasks.length - 3, q.size()); |
655 |
assertEquals(tasks.length - 2, p.getTaskCount()); |
656 |
} |
657 |
} |
658 |
|
659 |
/** |
660 |
* shutdownNow returns a list containing tasks that were not run, |
661 |
* and those tasks are drained from the queue |
662 |
*/ |
663 |
public void testShutdownNow() throws InterruptedException { |
664 |
final int poolSize = 2; |
665 |
final int count = 5; |
666 |
final AtomicInteger ran = new AtomicInteger(0); |
667 |
final ThreadPoolExecutor p = |
668 |
new ThreadPoolExecutor(poolSize, poolSize, |
669 |
LONG_DELAY_MS, MILLISECONDS, |
670 |
new ArrayBlockingQueue<Runnable>(10)); |
671 |
final CountDownLatch threadsStarted = new CountDownLatch(poolSize); |
672 |
Runnable waiter = new CheckedRunnable() { public void realRun() { |
673 |
threadsStarted.countDown(); |
674 |
try { |
675 |
MILLISECONDS.sleep(LONGER_DELAY_MS); |
676 |
} catch (InterruptedException success) {} |
677 |
ran.getAndIncrement(); |
678 |
}}; |
679 |
for (int i = 0; i < count; i++) |
680 |
p.execute(waiter); |
681 |
await(threadsStarted); |
682 |
assertEquals(poolSize, p.getActiveCount()); |
683 |
assertEquals(0, p.getCompletedTaskCount()); |
684 |
final List<Runnable> queuedTasks; |
685 |
try { |
686 |
queuedTasks = p.shutdownNow(); |
687 |
} catch (SecurityException ok) { |
688 |
return; // Allowed in case test doesn't have privs |
689 |
} |
690 |
assertTrue(p.isShutdown()); |
691 |
assertTrue(p.getQueue().isEmpty()); |
692 |
assertEquals(count - poolSize, queuedTasks.size()); |
693 |
assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
694 |
assertTrue(p.isTerminated()); |
695 |
assertEquals(poolSize, ran.get()); |
696 |
assertEquals(poolSize, p.getCompletedTaskCount()); |
697 |
} |
698 |
|
699 |
// Exception Tests |
700 |
|
701 |
/** |
702 |
* Constructor throws if corePoolSize argument is less than zero |
703 |
*/ |
704 |
public void testConstructor1() { |
705 |
try { |
706 |
new ThreadPoolExecutor(-1, 1, 1L, SECONDS, |
707 |
new ArrayBlockingQueue<Runnable>(10)); |
708 |
shouldThrow(); |
709 |
} catch (IllegalArgumentException success) {} |
710 |
} |
711 |
|
712 |
/** |
713 |
* Constructor throws if maximumPoolSize is less than zero |
714 |
*/ |
715 |
public void testConstructor2() { |
716 |
try { |
717 |
new ThreadPoolExecutor(1, -1, 1L, SECONDS, |
718 |
new ArrayBlockingQueue<Runnable>(10)); |
719 |
shouldThrow(); |
720 |
} catch (IllegalArgumentException success) {} |
721 |
} |
722 |
|
723 |
/** |
724 |
* Constructor throws if maximumPoolSize is equal to zero |
725 |
*/ |
726 |
public void testConstructor3() { |
727 |
try { |
728 |
new ThreadPoolExecutor(1, 0, 1L, SECONDS, |
729 |
new ArrayBlockingQueue<Runnable>(10)); |
730 |
shouldThrow(); |
731 |
} catch (IllegalArgumentException success) {} |
732 |
} |
733 |
|
734 |
/** |
735 |
* Constructor throws if keepAliveTime is less than zero |
736 |
*/ |
737 |
public void testConstructor4() { |
738 |
try { |
739 |
new ThreadPoolExecutor(1, 2, -1L, SECONDS, |
740 |
new ArrayBlockingQueue<Runnable>(10)); |
741 |
shouldThrow(); |
742 |
} catch (IllegalArgumentException success) {} |
743 |
} |
744 |
|
745 |
/** |
746 |
* Constructor throws if corePoolSize is greater than the maximumPoolSize |
747 |
*/ |
748 |
public void testConstructor5() { |
749 |
try { |
750 |
new ThreadPoolExecutor(2, 1, 1L, SECONDS, |
751 |
new ArrayBlockingQueue<Runnable>(10)); |
752 |
shouldThrow(); |
753 |
} catch (IllegalArgumentException success) {} |
754 |
} |
755 |
|
756 |
/** |
757 |
* Constructor throws if workQueue is set to null |
758 |
*/ |
759 |
public void testConstructorNullPointerException() { |
760 |
try { |
761 |
new ThreadPoolExecutor(1, 2, 1L, SECONDS, |
762 |
(BlockingQueue) null); |
763 |
shouldThrow(); |
764 |
} catch (NullPointerException success) {} |
765 |
} |
766 |
|
767 |
/** |
768 |
* Constructor throws if corePoolSize argument is less than zero |
769 |
*/ |
770 |
public void testConstructor6() { |
771 |
try { |
772 |
new ThreadPoolExecutor(-1, 1, 1L, SECONDS, |
773 |
new ArrayBlockingQueue<Runnable>(10), |
774 |
new SimpleThreadFactory()); |
775 |
shouldThrow(); |
776 |
} catch (IllegalArgumentException success) {} |
777 |
} |
778 |
|
779 |
/** |
780 |
* Constructor throws if maximumPoolSize is less than zero |
781 |
*/ |
782 |
public void testConstructor7() { |
783 |
try { |
784 |
new ThreadPoolExecutor(1, -1, 1L, SECONDS, |
785 |
new ArrayBlockingQueue<Runnable>(10), |
786 |
new SimpleThreadFactory()); |
787 |
shouldThrow(); |
788 |
} catch (IllegalArgumentException success) {} |
789 |
} |
790 |
|
791 |
/** |
792 |
* Constructor throws if maximumPoolSize is equal to zero |
793 |
*/ |
794 |
public void testConstructor8() { |
795 |
try { |
796 |
new ThreadPoolExecutor(1, 0, 1L, SECONDS, |
797 |
new ArrayBlockingQueue<Runnable>(10), |
798 |
new SimpleThreadFactory()); |
799 |
shouldThrow(); |
800 |
} catch (IllegalArgumentException success) {} |
801 |
} |
802 |
|
803 |
/** |
804 |
* Constructor throws if keepAliveTime is less than zero |
805 |
*/ |
806 |
public void testConstructor9() { |
807 |
try { |
808 |
new ThreadPoolExecutor(1, 2, -1L, SECONDS, |
809 |
new ArrayBlockingQueue<Runnable>(10), |
810 |
new SimpleThreadFactory()); |
811 |
shouldThrow(); |
812 |
} catch (IllegalArgumentException success) {} |
813 |
} |
814 |
|
815 |
/** |
816 |
* Constructor throws if corePoolSize is greater than the maximumPoolSize |
817 |
*/ |
818 |
public void testConstructor10() { |
819 |
try { |
820 |
new ThreadPoolExecutor(2, 1, 1L, SECONDS, |
821 |
new ArrayBlockingQueue<Runnable>(10), |
822 |
new SimpleThreadFactory()); |
823 |
shouldThrow(); |
824 |
} catch (IllegalArgumentException success) {} |
825 |
} |
826 |
|
827 |
/** |
828 |
* Constructor throws if workQueue is set to null |
829 |
*/ |
830 |
public void testConstructorNullPointerException2() { |
831 |
try { |
832 |
new ThreadPoolExecutor(1, 2, 1L, SECONDS, |
833 |
(BlockingQueue) null, |
834 |
new SimpleThreadFactory()); |
835 |
shouldThrow(); |
836 |
} catch (NullPointerException success) {} |
837 |
} |
838 |
|
839 |
/** |
840 |
* Constructor throws if threadFactory is set to null |
841 |
*/ |
842 |
public void testConstructorNullPointerException3() { |
843 |
try { |
844 |
new ThreadPoolExecutor(1, 2, 1L, SECONDS, |
845 |
new ArrayBlockingQueue<Runnable>(10), |
846 |
(ThreadFactory) null); |
847 |
shouldThrow(); |
848 |
} catch (NullPointerException success) {} |
849 |
} |
850 |
|
851 |
/** |
852 |
* Constructor throws if corePoolSize argument is less than zero |
853 |
*/ |
854 |
public void testConstructor11() { |
855 |
try { |
856 |
new ThreadPoolExecutor(-1, 1, 1L, SECONDS, |
857 |
new ArrayBlockingQueue<Runnable>(10), |
858 |
new NoOpREHandler()); |
859 |
shouldThrow(); |
860 |
} catch (IllegalArgumentException success) {} |
861 |
} |
862 |
|
863 |
/** |
864 |
* Constructor throws if maximumPoolSize is less than zero |
865 |
*/ |
866 |
public void testConstructor12() { |
867 |
try { |
868 |
new ThreadPoolExecutor(1, -1, 1L, SECONDS, |
869 |
new ArrayBlockingQueue<Runnable>(10), |
870 |
new NoOpREHandler()); |
871 |
shouldThrow(); |
872 |
} catch (IllegalArgumentException success) {} |
873 |
} |
874 |
|
875 |
/** |
876 |
* Constructor throws if maximumPoolSize is equal to zero |
877 |
*/ |
878 |
public void testConstructor13() { |
879 |
try { |
880 |
new ThreadPoolExecutor(1, 0, 1L, SECONDS, |
881 |
new ArrayBlockingQueue<Runnable>(10), |
882 |
new NoOpREHandler()); |
883 |
shouldThrow(); |
884 |
} catch (IllegalArgumentException success) {} |
885 |
} |
886 |
|
887 |
/** |
888 |
* Constructor throws if keepAliveTime is less than zero |
889 |
*/ |
890 |
public void testConstructor14() { |
891 |
try { |
892 |
new ThreadPoolExecutor(1, 2, -1L, SECONDS, |
893 |
new ArrayBlockingQueue<Runnable>(10), |
894 |
new NoOpREHandler()); |
895 |
shouldThrow(); |
896 |
} catch (IllegalArgumentException success) {} |
897 |
} |
898 |
|
899 |
/** |
900 |
* Constructor throws if corePoolSize is greater than the maximumPoolSize |
901 |
*/ |
902 |
public void testConstructor15() { |
903 |
try { |
904 |
new ThreadPoolExecutor(2, 1, 1L, SECONDS, |
905 |
new ArrayBlockingQueue<Runnable>(10), |
906 |
new NoOpREHandler()); |
907 |
shouldThrow(); |
908 |
} catch (IllegalArgumentException success) {} |
909 |
} |
910 |
|
911 |
/** |
912 |
* Constructor throws if workQueue is set to null |
913 |
*/ |
914 |
public void testConstructorNullPointerException4() { |
915 |
try { |
916 |
new ThreadPoolExecutor(1, 2, 1L, SECONDS, |
917 |
(BlockingQueue) null, |
918 |
new NoOpREHandler()); |
919 |
shouldThrow(); |
920 |
} catch (NullPointerException success) {} |
921 |
} |
922 |
|
923 |
/** |
924 |
* Constructor throws if handler is set to null |
925 |
*/ |
926 |
public void testConstructorNullPointerException5() { |
927 |
try { |
928 |
new ThreadPoolExecutor(1, 2, 1L, SECONDS, |
929 |
new ArrayBlockingQueue<Runnable>(10), |
930 |
(RejectedExecutionHandler) null); |
931 |
shouldThrow(); |
932 |
} catch (NullPointerException success) {} |
933 |
} |
934 |
|
935 |
/** |
936 |
* Constructor throws if corePoolSize argument is less than zero |
937 |
*/ |
938 |
public void testConstructor16() { |
939 |
try { |
940 |
new ThreadPoolExecutor(-1, 1, 1L, SECONDS, |
941 |
new ArrayBlockingQueue<Runnable>(10), |
942 |
new SimpleThreadFactory(), |
943 |
new NoOpREHandler()); |
944 |
shouldThrow(); |
945 |
} catch (IllegalArgumentException success) {} |
946 |
} |
947 |
|
948 |
/** |
949 |
* Constructor throws if maximumPoolSize is less than zero |
950 |
*/ |
951 |
public void testConstructor17() { |
952 |
try { |
953 |
new ThreadPoolExecutor(1, -1, 1L, SECONDS, |
954 |
new ArrayBlockingQueue<Runnable>(10), |
955 |
new SimpleThreadFactory(), |
956 |
new NoOpREHandler()); |
957 |
shouldThrow(); |
958 |
} catch (IllegalArgumentException success) {} |
959 |
} |
960 |
|
961 |
/** |
962 |
* Constructor throws if maximumPoolSize is equal to zero |
963 |
*/ |
964 |
public void testConstructor18() { |
965 |
try { |
966 |
new ThreadPoolExecutor(1, 0, 1L, SECONDS, |
967 |
new ArrayBlockingQueue<Runnable>(10), |
968 |
new SimpleThreadFactory(), |
969 |
new NoOpREHandler()); |
970 |
shouldThrow(); |
971 |
} catch (IllegalArgumentException success) {} |
972 |
} |
973 |
|
974 |
/** |
975 |
* Constructor throws if keepAliveTime is less than zero |
976 |
*/ |
977 |
public void testConstructor19() { |
978 |
try { |
979 |
new ThreadPoolExecutor(1, 2, -1L, SECONDS, |
980 |
new ArrayBlockingQueue<Runnable>(10), |
981 |
new SimpleThreadFactory(), |
982 |
new NoOpREHandler()); |
983 |
shouldThrow(); |
984 |
} catch (IllegalArgumentException success) {} |
985 |
} |
986 |
|
987 |
/** |
988 |
* Constructor throws if corePoolSize is greater than the maximumPoolSize |
989 |
*/ |
990 |
public void testConstructor20() { |
991 |
try { |
992 |
new ThreadPoolExecutor(2, 1, 1L, SECONDS, |
993 |
new ArrayBlockingQueue<Runnable>(10), |
994 |
new SimpleThreadFactory(), |
995 |
new NoOpREHandler()); |
996 |
shouldThrow(); |
997 |
} catch (IllegalArgumentException success) {} |
998 |
} |
999 |
|
1000 |
/** |
1001 |
* Constructor throws if workQueue is null |
1002 |
*/ |
1003 |
public void testConstructorNullPointerException6() { |
1004 |
try { |
1005 |
new ThreadPoolExecutor(1, 2, 1L, SECONDS, |
1006 |
(BlockingQueue) null, |
1007 |
new SimpleThreadFactory(), |
1008 |
new NoOpREHandler()); |
1009 |
shouldThrow(); |
1010 |
} catch (NullPointerException success) {} |
1011 |
} |
1012 |
|
1013 |
/** |
1014 |
* Constructor throws if handler is null |
1015 |
*/ |
1016 |
public void testConstructorNullPointerException7() { |
1017 |
try { |
1018 |
new ThreadPoolExecutor(1, 2, 1L, SECONDS, |
1019 |
new ArrayBlockingQueue<Runnable>(10), |
1020 |
new SimpleThreadFactory(), |
1021 |
(RejectedExecutionHandler) null); |
1022 |
shouldThrow(); |
1023 |
} catch (NullPointerException success) {} |
1024 |
} |
1025 |
|
1026 |
/** |
1027 |
* Constructor throws if ThreadFactory is null |
1028 |
*/ |
1029 |
public void testConstructorNullPointerException8() { |
1030 |
try { |
1031 |
new ThreadPoolExecutor(1, 2, 1L, SECONDS, |
1032 |
new ArrayBlockingQueue<Runnable>(10), |
1033 |
(ThreadFactory) null, |
1034 |
new NoOpREHandler()); |
1035 |
shouldThrow(); |
1036 |
} catch (NullPointerException success) {} |
1037 |
} |
1038 |
|
1039 |
/** |
1040 |
* get of submitted callable throws InterruptedException if interrupted |
1041 |
*/ |
1042 |
public void testInterruptedSubmit() throws InterruptedException { |
1043 |
final CountDownLatch done = new CountDownLatch(1); |
1044 |
final ThreadPoolExecutor p = |
1045 |
new ThreadPoolExecutor(1, 1, |
1046 |
60, SECONDS, |
1047 |
new ArrayBlockingQueue<Runnable>(10)); |
1048 |
|
1049 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
1050 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
1051 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
1052 |
public void realRun() throws Exception { |
1053 |
Callable task = new CheckedCallable<Boolean>() { |
1054 |
public Boolean realCall() throws InterruptedException { |
1055 |
threadStarted.countDown(); |
1056 |
await(done); |
1057 |
return Boolean.TRUE; |
1058 |
}}; |
1059 |
p.submit(task).get(); |
1060 |
}}); |
1061 |
|
1062 |
await(threadStarted); // ensure quiescence |
1063 |
t.interrupt(); |
1064 |
awaitTermination(t); |
1065 |
} |
1066 |
} |
1067 |
|
1068 |
/** |
1069 |
* Submitted tasks are rejected when saturated or shutdown |
1070 |
*/ |
1071 |
public void testSubmittedTasksRejectedWhenSaturatedOrShutdown() throws InterruptedException { |
1072 |
final ThreadPoolExecutor p = new ThreadPoolExecutor( |
1073 |
1, 1, 1, SECONDS, new ArrayBlockingQueue<Runnable>(1)); |
1074 |
final int saturatedSize = saturatedSize(p); |
1075 |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
1076 |
final CountDownLatch threadsStarted = new CountDownLatch(p.getMaximumPoolSize()); |
1077 |
final CountDownLatch done = new CountDownLatch(1); |
1078 |
final Runnable r = () -> { |
1079 |
threadsStarted.countDown(); |
1080 |
for (;;) { |
1081 |
try { |
1082 |
done.await(); |
1083 |
return; |
1084 |
} catch (InterruptedException shutdownNowDeliberatelyIgnored) {} |
1085 |
}}; |
1086 |
final Callable<Boolean> c = () -> { |
1087 |
threadsStarted.countDown(); |
1088 |
for (;;) { |
1089 |
try { |
1090 |
done.await(); |
1091 |
return Boolean.TRUE; |
1092 |
} catch (InterruptedException shutdownNowDeliberatelyIgnored) {} |
1093 |
}}; |
1094 |
final boolean shutdownNow = rnd.nextBoolean(); |
1095 |
|
1096 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
1097 |
// saturate |
1098 |
for (int i = saturatedSize; i--> 0; ) { |
1099 |
switch (rnd.nextInt(4)) { |
1100 |
case 0: p.execute(r); break; |
1101 |
case 1: assertFalse(p.submit(r).isDone()); break; |
1102 |
case 2: assertFalse(p.submit(r, Boolean.TRUE).isDone()); break; |
1103 |
case 3: assertFalse(p.submit(c).isDone()); break; |
1104 |
} |
1105 |
} |
1106 |
|
1107 |
await(threadsStarted); |
1108 |
assertTaskSubmissionsAreRejected(p); |
1109 |
|
1110 |
if (shutdownNow) |
1111 |
p.shutdownNow(); |
1112 |
else |
1113 |
p.shutdown(); |
1114 |
// Pool is shutdown, but not yet terminated |
1115 |
assertTaskSubmissionsAreRejected(p); |
1116 |
assertFalse(p.isTerminated()); |
1117 |
|
1118 |
done.countDown(); // release blocking tasks |
1119 |
assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
1120 |
|
1121 |
assertTaskSubmissionsAreRejected(p); |
1122 |
} |
1123 |
assertEquals(saturatedSize(p) |
1124 |
- (shutdownNow ? p.getQueue().remainingCapacity() : 0), |
1125 |
p.getCompletedTaskCount()); |
1126 |
} |
1127 |
|
1128 |
/** |
1129 |
* executor using DiscardOldestPolicy drops oldest task if saturated. |
1130 |
*/ |
1131 |
public void testSaturatedExecute_DiscardOldestPolicy() { |
1132 |
final CountDownLatch done = new CountDownLatch(1); |
1133 |
LatchAwaiter r1 = awaiter(done); |
1134 |
LatchAwaiter r2 = awaiter(done); |
1135 |
LatchAwaiter r3 = awaiter(done); |
1136 |
final ThreadPoolExecutor p = |
1137 |
new ThreadPoolExecutor(1, 1, |
1138 |
LONG_DELAY_MS, MILLISECONDS, |
1139 |
new ArrayBlockingQueue<Runnable>(1), |
1140 |
new DiscardOldestPolicy()); |
1141 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
1142 |
assertEquals(LatchAwaiter.NEW, r1.state); |
1143 |
assertEquals(LatchAwaiter.NEW, r2.state); |
1144 |
assertEquals(LatchAwaiter.NEW, r3.state); |
1145 |
p.execute(r1); |
1146 |
p.execute(r2); |
1147 |
assertTrue(p.getQueue().contains(r2)); |
1148 |
p.execute(r3); |
1149 |
assertFalse(p.getQueue().contains(r2)); |
1150 |
assertTrue(p.getQueue().contains(r3)); |
1151 |
} |
1152 |
assertEquals(LatchAwaiter.DONE, r1.state); |
1153 |
assertEquals(LatchAwaiter.NEW, r2.state); |
1154 |
assertEquals(LatchAwaiter.DONE, r3.state); |
1155 |
} |
1156 |
|
1157 |
/** |
1158 |
* execute using DiscardOldestPolicy drops task on shutdown |
1159 |
*/ |
1160 |
public void testDiscardOldestOnShutdown() { |
1161 |
final ThreadPoolExecutor p = |
1162 |
new ThreadPoolExecutor(1, 1, |
1163 |
LONG_DELAY_MS, MILLISECONDS, |
1164 |
new ArrayBlockingQueue<Runnable>(1), |
1165 |
new DiscardOldestPolicy()); |
1166 |
|
1167 |
try { p.shutdown(); } catch (SecurityException ok) { return; } |
1168 |
try (PoolCleaner cleaner = cleaner(p)) { |
1169 |
TrackedNoOpRunnable r = new TrackedNoOpRunnable(); |
1170 |
p.execute(r); |
1171 |
assertFalse(r.done); |
1172 |
} |
1173 |
} |
1174 |
|
1175 |
/** |
1176 |
* Submitting null tasks throws NullPointerException |
1177 |
*/ |
1178 |
public void testNullTaskSubmission() { |
1179 |
final ThreadPoolExecutor p = |
1180 |
new ThreadPoolExecutor(1, 2, |
1181 |
1L, SECONDS, |
1182 |
new ArrayBlockingQueue<Runnable>(10)); |
1183 |
try (PoolCleaner cleaner = cleaner(p)) { |
1184 |
assertNullTaskSubmissionThrowsNullPointerException(p); |
1185 |
} |
1186 |
} |
1187 |
|
1188 |
/** |
1189 |
* setCorePoolSize of negative value throws IllegalArgumentException |
1190 |
*/ |
1191 |
public void testCorePoolSizeIllegalArgumentException() { |
1192 |
final ThreadPoolExecutor p = |
1193 |
new ThreadPoolExecutor(1, 2, |
1194 |
LONG_DELAY_MS, MILLISECONDS, |
1195 |
new ArrayBlockingQueue<Runnable>(10)); |
1196 |
try (PoolCleaner cleaner = cleaner(p)) { |
1197 |
try { |
1198 |
p.setCorePoolSize(-1); |
1199 |
shouldThrow(); |
1200 |
} catch (IllegalArgumentException success) {} |
1201 |
} |
1202 |
} |
1203 |
|
1204 |
/** |
1205 |
* setMaximumPoolSize(int) throws IllegalArgumentException if |
1206 |
* given a value less the core pool size |
1207 |
*/ |
1208 |
public void testMaximumPoolSizeIllegalArgumentException() { |
1209 |
final ThreadPoolExecutor p = |
1210 |
new ThreadPoolExecutor(2, 3, |
1211 |
LONG_DELAY_MS, MILLISECONDS, |
1212 |
new ArrayBlockingQueue<Runnable>(10)); |
1213 |
try (PoolCleaner cleaner = cleaner(p)) { |
1214 |
try { |
1215 |
p.setMaximumPoolSize(1); |
1216 |
shouldThrow(); |
1217 |
} catch (IllegalArgumentException success) {} |
1218 |
} |
1219 |
} |
1220 |
|
1221 |
/** |
1222 |
* setMaximumPoolSize throws IllegalArgumentException |
1223 |
* if given a negative value |
1224 |
*/ |
1225 |
public void testMaximumPoolSizeIllegalArgumentException2() { |
1226 |
final ThreadPoolExecutor p = |
1227 |
new ThreadPoolExecutor(2, 3, |
1228 |
LONG_DELAY_MS, MILLISECONDS, |
1229 |
new ArrayBlockingQueue<Runnable>(10)); |
1230 |
try (PoolCleaner cleaner = cleaner(p)) { |
1231 |
try { |
1232 |
p.setMaximumPoolSize(-1); |
1233 |
shouldThrow(); |
1234 |
} catch (IllegalArgumentException success) {} |
1235 |
} |
1236 |
} |
1237 |
|
1238 |
/** |
1239 |
* Configuration changes that allow core pool size greater than |
1240 |
* max pool size result in IllegalArgumentException. |
1241 |
*/ |
1242 |
public void testPoolSizeInvariants() { |
1243 |
final ThreadPoolExecutor p = |
1244 |
new ThreadPoolExecutor(1, 1, |
1245 |
LONG_DELAY_MS, MILLISECONDS, |
1246 |
new ArrayBlockingQueue<Runnable>(10)); |
1247 |
try (PoolCleaner cleaner = cleaner(p)) { |
1248 |
for (int s = 1; s < 5; s++) { |
1249 |
p.setMaximumPoolSize(s); |
1250 |
p.setCorePoolSize(s); |
1251 |
try { |
1252 |
p.setMaximumPoolSize(s - 1); |
1253 |
shouldThrow(); |
1254 |
} catch (IllegalArgumentException success) {} |
1255 |
assertEquals(s, p.getCorePoolSize()); |
1256 |
assertEquals(s, p.getMaximumPoolSize()); |
1257 |
try { |
1258 |
p.setCorePoolSize(s + 1); |
1259 |
shouldThrow(); |
1260 |
} catch (IllegalArgumentException success) {} |
1261 |
assertEquals(s, p.getCorePoolSize()); |
1262 |
assertEquals(s, p.getMaximumPoolSize()); |
1263 |
} |
1264 |
} |
1265 |
} |
1266 |
|
1267 |
/** |
1268 |
* setKeepAliveTime throws IllegalArgumentException |
1269 |
* when given a negative value |
1270 |
*/ |
1271 |
public void testKeepAliveTimeIllegalArgumentException() { |
1272 |
final ThreadPoolExecutor p = |
1273 |
new ThreadPoolExecutor(2, 3, |
1274 |
LONG_DELAY_MS, MILLISECONDS, |
1275 |
new ArrayBlockingQueue<Runnable>(10)); |
1276 |
try (PoolCleaner cleaner = cleaner(p)) { |
1277 |
try { |
1278 |
p.setKeepAliveTime(-1, MILLISECONDS); |
1279 |
shouldThrow(); |
1280 |
} catch (IllegalArgumentException success) {} |
1281 |
} |
1282 |
} |
1283 |
|
1284 |
/** |
1285 |
* terminated() is called on termination |
1286 |
*/ |
1287 |
public void testTerminated() { |
1288 |
ExtendedTPE p = new ExtendedTPE(); |
1289 |
try (PoolCleaner cleaner = cleaner(p)) { |
1290 |
try { p.shutdown(); } catch (SecurityException ok) { return; } |
1291 |
assertTrue(p.terminatedCalled()); |
1292 |
assertTrue(p.isShutdown()); |
1293 |
} |
1294 |
} |
1295 |
|
1296 |
/** |
1297 |
* beforeExecute and afterExecute are called when executing task |
1298 |
*/ |
1299 |
public void testBeforeAfter() throws InterruptedException { |
1300 |
ExtendedTPE p = new ExtendedTPE(); |
1301 |
try (PoolCleaner cleaner = cleaner(p)) { |
1302 |
final CountDownLatch done = new CountDownLatch(1); |
1303 |
p.execute(new CheckedRunnable() { |
1304 |
public void realRun() { |
1305 |
done.countDown(); |
1306 |
}}); |
1307 |
await(p.afterCalled); |
1308 |
assertEquals(0, done.getCount()); |
1309 |
assertTrue(p.afterCalled()); |
1310 |
assertTrue(p.beforeCalled()); |
1311 |
} |
1312 |
} |
1313 |
|
1314 |
/** |
1315 |
* completed submit of callable returns result |
1316 |
*/ |
1317 |
public void testSubmitCallable() throws Exception { |
1318 |
final ExecutorService e = |
1319 |
new ThreadPoolExecutor(2, 2, |
1320 |
LONG_DELAY_MS, MILLISECONDS, |
1321 |
new ArrayBlockingQueue<Runnable>(10)); |
1322 |
try (PoolCleaner cleaner = cleaner(e)) { |
1323 |
Future<String> future = e.submit(new StringTask()); |
1324 |
String result = future.get(); |
1325 |
assertSame(TEST_STRING, result); |
1326 |
} |
1327 |
} |
1328 |
|
1329 |
/** |
1330 |
* completed submit of runnable returns successfully |
1331 |
*/ |
1332 |
public void testSubmitRunnable() throws Exception { |
1333 |
final ExecutorService e = |
1334 |
new ThreadPoolExecutor(2, 2, |
1335 |
LONG_DELAY_MS, MILLISECONDS, |
1336 |
new ArrayBlockingQueue<Runnable>(10)); |
1337 |
try (PoolCleaner cleaner = cleaner(e)) { |
1338 |
Future<?> future = e.submit(new NoOpRunnable()); |
1339 |
future.get(); |
1340 |
assertTrue(future.isDone()); |
1341 |
} |
1342 |
} |
1343 |
|
1344 |
/** |
1345 |
* completed submit of (runnable, result) returns result |
1346 |
*/ |
1347 |
public void testSubmitRunnable2() throws Exception { |
1348 |
final ExecutorService e = |
1349 |
new ThreadPoolExecutor(2, 2, |
1350 |
LONG_DELAY_MS, MILLISECONDS, |
1351 |
new ArrayBlockingQueue<Runnable>(10)); |
1352 |
try (PoolCleaner cleaner = cleaner(e)) { |
1353 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
1354 |
String result = future.get(); |
1355 |
assertSame(TEST_STRING, result); |
1356 |
} |
1357 |
} |
1358 |
|
1359 |
/** |
1360 |
* invokeAny(null) throws NPE |
1361 |
*/ |
1362 |
public void testInvokeAny1() throws Exception { |
1363 |
final ExecutorService e = |
1364 |
new ThreadPoolExecutor(2, 2, |
1365 |
LONG_DELAY_MS, MILLISECONDS, |
1366 |
new ArrayBlockingQueue<Runnable>(10)); |
1367 |
try (PoolCleaner cleaner = cleaner(e)) { |
1368 |
try { |
1369 |
e.invokeAny(null); |
1370 |
shouldThrow(); |
1371 |
} catch (NullPointerException success) {} |
1372 |
} |
1373 |
} |
1374 |
|
1375 |
/** |
1376 |
* invokeAny(empty collection) throws IllegalArgumentException |
1377 |
*/ |
1378 |
public void testInvokeAny2() throws Exception { |
1379 |
final ExecutorService e = |
1380 |
new ThreadPoolExecutor(2, 2, |
1381 |
LONG_DELAY_MS, MILLISECONDS, |
1382 |
new ArrayBlockingQueue<Runnable>(10)); |
1383 |
try (PoolCleaner cleaner = cleaner(e)) { |
1384 |
try { |
1385 |
e.invokeAny(new ArrayList<Callable<String>>()); |
1386 |
shouldThrow(); |
1387 |
} catch (IllegalArgumentException success) {} |
1388 |
} |
1389 |
} |
1390 |
|
1391 |
/** |
1392 |
* invokeAny(c) throws NPE if c has null elements |
1393 |
*/ |
1394 |
public void testInvokeAny3() throws Exception { |
1395 |
final CountDownLatch latch = new CountDownLatch(1); |
1396 |
final ExecutorService e = |
1397 |
new ThreadPoolExecutor(2, 2, |
1398 |
LONG_DELAY_MS, MILLISECONDS, |
1399 |
new ArrayBlockingQueue<Runnable>(10)); |
1400 |
try (PoolCleaner cleaner = cleaner(e)) { |
1401 |
List<Callable<String>> l = new ArrayList<>(); |
1402 |
l.add(latchAwaitingStringTask(latch)); |
1403 |
l.add(null); |
1404 |
try { |
1405 |
e.invokeAny(l); |
1406 |
shouldThrow(); |
1407 |
} catch (NullPointerException success) {} |
1408 |
latch.countDown(); |
1409 |
} |
1410 |
} |
1411 |
|
1412 |
/** |
1413 |
* invokeAny(c) throws ExecutionException if no task completes |
1414 |
*/ |
1415 |
public void testInvokeAny4() throws Exception { |
1416 |
final ExecutorService e = |
1417 |
new ThreadPoolExecutor(2, 2, |
1418 |
LONG_DELAY_MS, MILLISECONDS, |
1419 |
new ArrayBlockingQueue<Runnable>(10)); |
1420 |
try (PoolCleaner cleaner = cleaner(e)) { |
1421 |
List<Callable<String>> l = new ArrayList<>(); |
1422 |
l.add(new NPETask()); |
1423 |
try { |
1424 |
e.invokeAny(l); |
1425 |
shouldThrow(); |
1426 |
} catch (ExecutionException success) { |
1427 |
assertTrue(success.getCause() instanceof NullPointerException); |
1428 |
} |
1429 |
} |
1430 |
} |
1431 |
|
1432 |
/** |
1433 |
* invokeAny(c) returns result of some task |
1434 |
*/ |
1435 |
public void testInvokeAny5() throws Exception { |
1436 |
final ExecutorService e = |
1437 |
new ThreadPoolExecutor(2, 2, |
1438 |
LONG_DELAY_MS, MILLISECONDS, |
1439 |
new ArrayBlockingQueue<Runnable>(10)); |
1440 |
try (PoolCleaner cleaner = cleaner(e)) { |
1441 |
List<Callable<String>> l = new ArrayList<>(); |
1442 |
l.add(new StringTask()); |
1443 |
l.add(new StringTask()); |
1444 |
String result = e.invokeAny(l); |
1445 |
assertSame(TEST_STRING, result); |
1446 |
} |
1447 |
} |
1448 |
|
1449 |
/** |
1450 |
* invokeAll(null) throws NPE |
1451 |
*/ |
1452 |
public void testInvokeAll1() throws Exception { |
1453 |
final ExecutorService e = |
1454 |
new ThreadPoolExecutor(2, 2, |
1455 |
LONG_DELAY_MS, MILLISECONDS, |
1456 |
new ArrayBlockingQueue<Runnable>(10)); |
1457 |
try (PoolCleaner cleaner = cleaner(e)) { |
1458 |
try { |
1459 |
e.invokeAll(null); |
1460 |
shouldThrow(); |
1461 |
} catch (NullPointerException success) {} |
1462 |
} |
1463 |
} |
1464 |
|
1465 |
/** |
1466 |
* invokeAll(empty collection) returns empty list |
1467 |
*/ |
1468 |
public void testInvokeAll2() throws InterruptedException { |
1469 |
final ExecutorService e = |
1470 |
new ThreadPoolExecutor(2, 2, |
1471 |
LONG_DELAY_MS, MILLISECONDS, |
1472 |
new ArrayBlockingQueue<Runnable>(10)); |
1473 |
final Collection<Callable<String>> emptyCollection |
1474 |
= Collections.emptyList(); |
1475 |
try (PoolCleaner cleaner = cleaner(e)) { |
1476 |
List<Future<String>> r = e.invokeAll(emptyCollection); |
1477 |
assertTrue(r.isEmpty()); |
1478 |
} |
1479 |
} |
1480 |
|
1481 |
/** |
1482 |
* invokeAll(c) throws NPE if c has null elements |
1483 |
*/ |
1484 |
public void testInvokeAll3() throws Exception { |
1485 |
final ExecutorService e = |
1486 |
new ThreadPoolExecutor(2, 2, |
1487 |
LONG_DELAY_MS, MILLISECONDS, |
1488 |
new ArrayBlockingQueue<Runnable>(10)); |
1489 |
try (PoolCleaner cleaner = cleaner(e)) { |
1490 |
List<Callable<String>> l = new ArrayList<>(); |
1491 |
l.add(new StringTask()); |
1492 |
l.add(null); |
1493 |
try { |
1494 |
e.invokeAll(l); |
1495 |
shouldThrow(); |
1496 |
} catch (NullPointerException success) {} |
1497 |
} |
1498 |
} |
1499 |
|
1500 |
/** |
1501 |
* get of element of invokeAll(c) throws exception on failed task |
1502 |
*/ |
1503 |
public void testInvokeAll4() throws Exception { |
1504 |
final ExecutorService e = |
1505 |
new ThreadPoolExecutor(2, 2, |
1506 |
LONG_DELAY_MS, MILLISECONDS, |
1507 |
new ArrayBlockingQueue<Runnable>(10)); |
1508 |
try (PoolCleaner cleaner = cleaner(e)) { |
1509 |
List<Callable<String>> l = new ArrayList<>(); |
1510 |
l.add(new NPETask()); |
1511 |
List<Future<String>> futures = e.invokeAll(l); |
1512 |
assertEquals(1, futures.size()); |
1513 |
try { |
1514 |
futures.get(0).get(); |
1515 |
shouldThrow(); |
1516 |
} catch (ExecutionException success) { |
1517 |
assertTrue(success.getCause() instanceof NullPointerException); |
1518 |
} |
1519 |
} |
1520 |
} |
1521 |
|
1522 |
/** |
1523 |
* invokeAll(c) returns results of all completed tasks |
1524 |
*/ |
1525 |
public void testInvokeAll5() throws Exception { |
1526 |
final ExecutorService e = |
1527 |
new ThreadPoolExecutor(2, 2, |
1528 |
LONG_DELAY_MS, MILLISECONDS, |
1529 |
new ArrayBlockingQueue<Runnable>(10)); |
1530 |
try (PoolCleaner cleaner = cleaner(e)) { |
1531 |
List<Callable<String>> l = new ArrayList<>(); |
1532 |
l.add(new StringTask()); |
1533 |
l.add(new StringTask()); |
1534 |
List<Future<String>> futures = e.invokeAll(l); |
1535 |
assertEquals(2, futures.size()); |
1536 |
for (Future<String> future : futures) |
1537 |
assertSame(TEST_STRING, future.get()); |
1538 |
} |
1539 |
} |
1540 |
|
1541 |
/** |
1542 |
* timed invokeAny(null) throws NPE |
1543 |
*/ |
1544 |
public void testTimedInvokeAny1() throws Exception { |
1545 |
final ExecutorService e = |
1546 |
new ThreadPoolExecutor(2, 2, |
1547 |
LONG_DELAY_MS, MILLISECONDS, |
1548 |
new ArrayBlockingQueue<Runnable>(10)); |
1549 |
try (PoolCleaner cleaner = cleaner(e)) { |
1550 |
try { |
1551 |
e.invokeAny(null, randomTimeout(), randomTimeUnit()); |
1552 |
shouldThrow(); |
1553 |
} catch (NullPointerException success) {} |
1554 |
} |
1555 |
} |
1556 |
|
1557 |
/** |
1558 |
* timed invokeAny(,,null) throws NPE |
1559 |
*/ |
1560 |
public void testTimedInvokeAnyNullTimeUnit() throws Exception { |
1561 |
final ExecutorService e = |
1562 |
new ThreadPoolExecutor(2, 2, |
1563 |
LONG_DELAY_MS, MILLISECONDS, |
1564 |
new ArrayBlockingQueue<Runnable>(10)); |
1565 |
try (PoolCleaner cleaner = cleaner(e)) { |
1566 |
List<Callable<String>> l = new ArrayList<>(); |
1567 |
l.add(new StringTask()); |
1568 |
try { |
1569 |
e.invokeAny(l, randomTimeout(), null); |
1570 |
shouldThrow(); |
1571 |
} catch (NullPointerException success) {} |
1572 |
} |
1573 |
} |
1574 |
|
1575 |
/** |
1576 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
1577 |
*/ |
1578 |
public void testTimedInvokeAny2() throws Exception { |
1579 |
final ExecutorService e = |
1580 |
new ThreadPoolExecutor(2, 2, |
1581 |
LONG_DELAY_MS, MILLISECONDS, |
1582 |
new ArrayBlockingQueue<Runnable>(10)); |
1583 |
try (PoolCleaner cleaner = cleaner(e)) { |
1584 |
try { |
1585 |
e.invokeAny(new ArrayList<Callable<String>>(), |
1586 |
randomTimeout(), randomTimeUnit()); |
1587 |
shouldThrow(); |
1588 |
} catch (IllegalArgumentException success) {} |
1589 |
} |
1590 |
} |
1591 |
|
1592 |
/** |
1593 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
1594 |
*/ |
1595 |
public void testTimedInvokeAny3() throws Exception { |
1596 |
final CountDownLatch latch = new CountDownLatch(1); |
1597 |
final ExecutorService e = |
1598 |
new ThreadPoolExecutor(2, 2, |
1599 |
LONG_DELAY_MS, MILLISECONDS, |
1600 |
new ArrayBlockingQueue<Runnable>(10)); |
1601 |
try (PoolCleaner cleaner = cleaner(e)) { |
1602 |
List<Callable<String>> l = new ArrayList<>(); |
1603 |
l.add(latchAwaitingStringTask(latch)); |
1604 |
l.add(null); |
1605 |
try { |
1606 |
e.invokeAny(l, randomTimeout(), randomTimeUnit()); |
1607 |
shouldThrow(); |
1608 |
} catch (NullPointerException success) {} |
1609 |
latch.countDown(); |
1610 |
} |
1611 |
} |
1612 |
|
1613 |
/** |
1614 |
* timed invokeAny(c) throws ExecutionException if no task completes |
1615 |
*/ |
1616 |
public void testTimedInvokeAny4() throws Exception { |
1617 |
final ExecutorService e = |
1618 |
new ThreadPoolExecutor(2, 2, |
1619 |
LONG_DELAY_MS, MILLISECONDS, |
1620 |
new ArrayBlockingQueue<Runnable>(10)); |
1621 |
try (PoolCleaner cleaner = cleaner(e)) { |
1622 |
long startTime = System.nanoTime(); |
1623 |
List<Callable<String>> l = new ArrayList<>(); |
1624 |
l.add(new NPETask()); |
1625 |
try { |
1626 |
e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
1627 |
shouldThrow(); |
1628 |
} catch (ExecutionException success) { |
1629 |
assertTrue(success.getCause() instanceof NullPointerException); |
1630 |
} |
1631 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
1632 |
} |
1633 |
} |
1634 |
|
1635 |
/** |
1636 |
* timed invokeAny(c) returns result of some task |
1637 |
*/ |
1638 |
public void testTimedInvokeAny5() throws Exception { |
1639 |
final ExecutorService e = |
1640 |
new ThreadPoolExecutor(2, 2, |
1641 |
LONG_DELAY_MS, MILLISECONDS, |
1642 |
new ArrayBlockingQueue<Runnable>(10)); |
1643 |
try (PoolCleaner cleaner = cleaner(e)) { |
1644 |
long startTime = System.nanoTime(); |
1645 |
List<Callable<String>> l = new ArrayList<>(); |
1646 |
l.add(new StringTask()); |
1647 |
l.add(new StringTask()); |
1648 |
String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
1649 |
assertSame(TEST_STRING, result); |
1650 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
1651 |
} |
1652 |
} |
1653 |
|
1654 |
/** |
1655 |
* timed invokeAll(null) throws NPE |
1656 |
*/ |
1657 |
public void testTimedInvokeAll1() throws Exception { |
1658 |
final ExecutorService e = |
1659 |
new ThreadPoolExecutor(2, 2, |
1660 |
LONG_DELAY_MS, MILLISECONDS, |
1661 |
new ArrayBlockingQueue<Runnable>(10)); |
1662 |
try (PoolCleaner cleaner = cleaner(e)) { |
1663 |
try { |
1664 |
e.invokeAll(null, randomTimeout(), randomTimeUnit()); |
1665 |
shouldThrow(); |
1666 |
} catch (NullPointerException success) {} |
1667 |
} |
1668 |
} |
1669 |
|
1670 |
/** |
1671 |
* timed invokeAll(,,null) throws NPE |
1672 |
*/ |
1673 |
public void testTimedInvokeAllNullTimeUnit() throws Exception { |
1674 |
final ExecutorService e = |
1675 |
new ThreadPoolExecutor(2, 2, |
1676 |
LONG_DELAY_MS, MILLISECONDS, |
1677 |
new ArrayBlockingQueue<Runnable>(10)); |
1678 |
try (PoolCleaner cleaner = cleaner(e)) { |
1679 |
List<Callable<String>> l = new ArrayList<>(); |
1680 |
l.add(new StringTask()); |
1681 |
try { |
1682 |
e.invokeAll(l, randomTimeout(), null); |
1683 |
shouldThrow(); |
1684 |
} catch (NullPointerException success) {} |
1685 |
} |
1686 |
} |
1687 |
|
1688 |
/** |
1689 |
* timed invokeAll(empty collection) returns empty list |
1690 |
*/ |
1691 |
public void testTimedInvokeAll2() throws InterruptedException { |
1692 |
final ExecutorService e = |
1693 |
new ThreadPoolExecutor(2, 2, |
1694 |
LONG_DELAY_MS, MILLISECONDS, |
1695 |
new ArrayBlockingQueue<Runnable>(10)); |
1696 |
final Collection<Callable<String>> emptyCollection |
1697 |
= Collections.emptyList(); |
1698 |
try (PoolCleaner cleaner = cleaner(e)) { |
1699 |
List<Future<String>> r = |
1700 |
e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit()); |
1701 |
assertTrue(r.isEmpty()); |
1702 |
} |
1703 |
} |
1704 |
|
1705 |
/** |
1706 |
* timed invokeAll(c) throws NPE if c has null elements |
1707 |
*/ |
1708 |
public void testTimedInvokeAll3() throws Exception { |
1709 |
final ExecutorService e = |
1710 |
new ThreadPoolExecutor(2, 2, |
1711 |
LONG_DELAY_MS, MILLISECONDS, |
1712 |
new ArrayBlockingQueue<Runnable>(10)); |
1713 |
try (PoolCleaner cleaner = cleaner(e)) { |
1714 |
List<Callable<String>> l = new ArrayList<>(); |
1715 |
l.add(new StringTask()); |
1716 |
l.add(null); |
1717 |
try { |
1718 |
e.invokeAll(l, randomTimeout(), randomTimeUnit()); |
1719 |
shouldThrow(); |
1720 |
} catch (NullPointerException success) {} |
1721 |
} |
1722 |
} |
1723 |
|
1724 |
/** |
1725 |
* get of element of invokeAll(c) throws exception on failed task |
1726 |
*/ |
1727 |
public void testTimedInvokeAll4() throws Exception { |
1728 |
final ExecutorService e = |
1729 |
new ThreadPoolExecutor(2, 2, |
1730 |
LONG_DELAY_MS, MILLISECONDS, |
1731 |
new ArrayBlockingQueue<Runnable>(10)); |
1732 |
try (PoolCleaner cleaner = cleaner(e)) { |
1733 |
List<Callable<String>> l = new ArrayList<>(); |
1734 |
l.add(new NPETask()); |
1735 |
List<Future<String>> futures = |
1736 |
e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
1737 |
assertEquals(1, futures.size()); |
1738 |
try { |
1739 |
futures.get(0).get(); |
1740 |
shouldThrow(); |
1741 |
} catch (ExecutionException success) { |
1742 |
assertTrue(success.getCause() instanceof NullPointerException); |
1743 |
} |
1744 |
} |
1745 |
} |
1746 |
|
1747 |
/** |
1748 |
* timed invokeAll(c) returns results of all completed tasks |
1749 |
*/ |
1750 |
public void testTimedInvokeAll5() throws Exception { |
1751 |
final ExecutorService e = |
1752 |
new ThreadPoolExecutor(2, 2, |
1753 |
LONG_DELAY_MS, MILLISECONDS, |
1754 |
new ArrayBlockingQueue<Runnable>(10)); |
1755 |
try (PoolCleaner cleaner = cleaner(e)) { |
1756 |
List<Callable<String>> l = new ArrayList<>(); |
1757 |
l.add(new StringTask()); |
1758 |
l.add(new StringTask()); |
1759 |
List<Future<String>> futures = |
1760 |
e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
1761 |
assertEquals(2, futures.size()); |
1762 |
for (Future<String> future : futures) |
1763 |
assertSame(TEST_STRING, future.get()); |
1764 |
} |
1765 |
} |
1766 |
|
1767 |
/** |
1768 |
* timed invokeAll(c) cancels tasks not completed by timeout |
1769 |
*/ |
1770 |
public void testTimedInvokeAll6() throws Exception { |
1771 |
for (long timeout = timeoutMillis();;) { |
1772 |
final CountDownLatch done = new CountDownLatch(1); |
1773 |
final Callable<String> waiter = new CheckedCallable<String>() { |
1774 |
public String realCall() { |
1775 |
try { done.await(LONG_DELAY_MS, MILLISECONDS); } |
1776 |
catch (InterruptedException ok) {} |
1777 |
return "1"; }}; |
1778 |
final ExecutorService p = |
1779 |
new ThreadPoolExecutor(2, 2, |
1780 |
LONG_DELAY_MS, MILLISECONDS, |
1781 |
new ArrayBlockingQueue<Runnable>(10)); |
1782 |
try (PoolCleaner cleaner = cleaner(p, done)) { |
1783 |
List<Callable<String>> tasks = new ArrayList<>(); |
1784 |
tasks.add(new StringTask("0")); |
1785 |
tasks.add(waiter); |
1786 |
tasks.add(new StringTask("2")); |
1787 |
long startTime = System.nanoTime(); |
1788 |
List<Future<String>> futures = |
1789 |
p.invokeAll(tasks, timeout, MILLISECONDS); |
1790 |
assertEquals(tasks.size(), futures.size()); |
1791 |
assertTrue(millisElapsedSince(startTime) >= timeout); |
1792 |
for (Future future : futures) |
1793 |
assertTrue(future.isDone()); |
1794 |
assertTrue(futures.get(1).isCancelled()); |
1795 |
try { |
1796 |
assertEquals("0", futures.get(0).get()); |
1797 |
assertEquals("2", futures.get(2).get()); |
1798 |
break; |
1799 |
} catch (CancellationException retryWithLongerTimeout) { |
1800 |
timeout *= 2; |
1801 |
if (timeout >= LONG_DELAY_MS / 2) |
1802 |
fail("expected exactly one task to be cancelled"); |
1803 |
} |
1804 |
} |
1805 |
} |
1806 |
} |
1807 |
|
1808 |
/** |
1809 |
* Execution continues if there is at least one thread even if |
1810 |
* thread factory fails to create more |
1811 |
*/ |
1812 |
public void testFailingThreadFactory() throws InterruptedException { |
1813 |
final ExecutorService e = |
1814 |
new ThreadPoolExecutor(100, 100, |
1815 |
LONG_DELAY_MS, MILLISECONDS, |
1816 |
new LinkedBlockingQueue<Runnable>(), |
1817 |
new FailingThreadFactory()); |
1818 |
try (PoolCleaner cleaner = cleaner(e)) { |
1819 |
final int TASKS = 100; |
1820 |
final CountDownLatch done = new CountDownLatch(TASKS); |
1821 |
for (int k = 0; k < TASKS; ++k) |
1822 |
e.execute(new CheckedRunnable() { |
1823 |
public void realRun() { |
1824 |
done.countDown(); |
1825 |
}}); |
1826 |
await(done); |
1827 |
} |
1828 |
} |
1829 |
|
1830 |
/** |
1831 |
* allowsCoreThreadTimeOut is by default false. |
1832 |
*/ |
1833 |
public void testAllowsCoreThreadTimeOut() { |
1834 |
final ThreadPoolExecutor p = |
1835 |
new ThreadPoolExecutor(2, 2, |
1836 |
1000, MILLISECONDS, |
1837 |
new ArrayBlockingQueue<Runnable>(10)); |
1838 |
try (PoolCleaner cleaner = cleaner(p)) { |
1839 |
assertFalse(p.allowsCoreThreadTimeOut()); |
1840 |
} |
1841 |
} |
1842 |
|
1843 |
/** |
1844 |
* allowCoreThreadTimeOut(true) causes idle threads to time out |
1845 |
*/ |
1846 |
public void testAllowCoreThreadTimeOut_true() throws Exception { |
1847 |
long keepAliveTime = timeoutMillis(); |
1848 |
final ThreadPoolExecutor p = |
1849 |
new ThreadPoolExecutor(2, 10, |
1850 |
keepAliveTime, MILLISECONDS, |
1851 |
new ArrayBlockingQueue<Runnable>(10)); |
1852 |
try (PoolCleaner cleaner = cleaner(p)) { |
1853 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
1854 |
p.allowCoreThreadTimeOut(true); |
1855 |
p.execute(new CheckedRunnable() { |
1856 |
public void realRun() { |
1857 |
threadStarted.countDown(); |
1858 |
assertEquals(1, p.getPoolSize()); |
1859 |
}}); |
1860 |
await(threadStarted); |
1861 |
delay(keepAliveTime); |
1862 |
long startTime = System.nanoTime(); |
1863 |
while (p.getPoolSize() > 0 |
1864 |
&& millisElapsedSince(startTime) < LONG_DELAY_MS) |
1865 |
Thread.yield(); |
1866 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
1867 |
assertEquals(0, p.getPoolSize()); |
1868 |
} |
1869 |
} |
1870 |
|
1871 |
/** |
1872 |
* allowCoreThreadTimeOut(false) causes idle threads not to time out |
1873 |
*/ |
1874 |
public void testAllowCoreThreadTimeOut_false() throws Exception { |
1875 |
long keepAliveTime = timeoutMillis(); |
1876 |
final ThreadPoolExecutor p = |
1877 |
new ThreadPoolExecutor(2, 10, |
1878 |
keepAliveTime, MILLISECONDS, |
1879 |
new ArrayBlockingQueue<Runnable>(10)); |
1880 |
try (PoolCleaner cleaner = cleaner(p)) { |
1881 |
final CountDownLatch threadStarted = new CountDownLatch(1); |
1882 |
p.allowCoreThreadTimeOut(false); |
1883 |
p.execute(new CheckedRunnable() { |
1884 |
public void realRun() throws InterruptedException { |
1885 |
threadStarted.countDown(); |
1886 |
assertTrue(p.getPoolSize() >= 1); |
1887 |
}}); |
1888 |
delay(2 * keepAliveTime); |
1889 |
assertTrue(p.getPoolSize() >= 1); |
1890 |
} |
1891 |
} |
1892 |
|
1893 |
/** |
1894 |
* execute allows the same task to be submitted multiple times, even |
1895 |
* if rejected |
1896 |
*/ |
1897 |
public void testRejectedRecycledTask() throws InterruptedException { |
1898 |
final int nTasks = 1000; |
1899 |
final CountDownLatch done = new CountDownLatch(nTasks); |
1900 |
final Runnable recycledTask = new Runnable() { |
1901 |
public void run() { |
1902 |
done.countDown(); |
1903 |
}}; |
1904 |
final ThreadPoolExecutor p = |
1905 |
new ThreadPoolExecutor(1, 30, |
1906 |
60, SECONDS, |
1907 |
new ArrayBlockingQueue(30)); |
1908 |
try (PoolCleaner cleaner = cleaner(p)) { |
1909 |
for (int i = 0; i < nTasks; ++i) { |
1910 |
for (;;) { |
1911 |
try { |
1912 |
p.execute(recycledTask); |
1913 |
break; |
1914 |
} |
1915 |
catch (RejectedExecutionException ignore) {} |
1916 |
} |
1917 |
} |
1918 |
// enough time to run all tasks |
1919 |
await(done, nTasks * SHORT_DELAY_MS); |
1920 |
} |
1921 |
} |
1922 |
|
1923 |
/** |
1924 |
* get(cancelled task) throws CancellationException |
1925 |
*/ |
1926 |
public void testGet_cancelled() throws Exception { |
1927 |
final CountDownLatch done = new CountDownLatch(1); |
1928 |
final ExecutorService e = |
1929 |
new ThreadPoolExecutor(1, 1, |
1930 |
LONG_DELAY_MS, MILLISECONDS, |
1931 |
new LinkedBlockingQueue<Runnable>()); |
1932 |
try (PoolCleaner cleaner = cleaner(e, done)) { |
1933 |
final CountDownLatch blockerStarted = new CountDownLatch(1); |
1934 |
final List<Future<?>> futures = new ArrayList<>(); |
1935 |
for (int i = 0; i < 2; i++) { |
1936 |
Runnable r = new CheckedRunnable() { public void realRun() |
1937 |
throws Throwable { |
1938 |
blockerStarted.countDown(); |
1939 |
assertTrue(done.await(2 * LONG_DELAY_MS, MILLISECONDS)); |
1940 |
}}; |
1941 |
futures.add(e.submit(r)); |
1942 |
} |
1943 |
await(blockerStarted); |
1944 |
for (Future<?> future : futures) future.cancel(false); |
1945 |
for (Future<?> future : futures) { |
1946 |
try { |
1947 |
future.get(); |
1948 |
shouldThrow(); |
1949 |
} catch (CancellationException success) {} |
1950 |
try { |
1951 |
future.get(LONG_DELAY_MS, MILLISECONDS); |
1952 |
shouldThrow(); |
1953 |
} catch (CancellationException success) {} |
1954 |
assertTrue(future.isCancelled()); |
1955 |
assertTrue(future.isDone()); |
1956 |
} |
1957 |
} |
1958 |
} |
1959 |
|
1960 |
/** Directly test simple ThreadPoolExecutor RejectedExecutionHandlers. */ |
1961 |
public void testStandardRejectedExecutionHandlers() { |
1962 |
final ThreadPoolExecutor p = |
1963 |
new ThreadPoolExecutor(1, 1, 1, SECONDS, |
1964 |
new ArrayBlockingQueue<Runnable>(1)); |
1965 |
final AtomicReference<Thread> thread = new AtomicReference<>(); |
1966 |
final Runnable r = new Runnable() { public void run() { |
1967 |
thread.set(Thread.currentThread()); }}; |
1968 |
|
1969 |
try { |
1970 |
new AbortPolicy().rejectedExecution(r, p); |
1971 |
shouldThrow(); |
1972 |
} catch (RejectedExecutionException success) {} |
1973 |
assertNull(thread.get()); |
1974 |
|
1975 |
new DiscardPolicy().rejectedExecution(r, p); |
1976 |
assertNull(thread.get()); |
1977 |
|
1978 |
new CallerRunsPolicy().rejectedExecution(r, p); |
1979 |
assertSame(Thread.currentThread(), thread.get()); |
1980 |
|
1981 |
// check that pool was not perturbed by handlers |
1982 |
assertTrue(p.getRejectedExecutionHandler() instanceof AbortPolicy); |
1983 |
assertEquals(0, p.getTaskCount()); |
1984 |
assertTrue(p.getQueue().isEmpty()); |
1985 |
} |
1986 |
|
1987 |
public void testThreadFactoryReturnsTerminatedThread_shouldThrow() { |
1988 |
if (!testImplementationDetails) |
1989 |
return; |
1990 |
|
1991 |
ThreadFactory returnsTerminatedThread = runnableIgnored -> { |
1992 |
Thread thread = new Thread(() -> {}); |
1993 |
thread.start(); |
1994 |
try { thread.join(); } |
1995 |
catch (InterruptedException ex) { throw new Error(ex); } |
1996 |
return thread; |
1997 |
}; |
1998 |
ThreadPoolExecutor p = |
1999 |
new ThreadPoolExecutor(1, 1, 1, SECONDS, |
2000 |
new ArrayBlockingQueue<Runnable>(1), |
2001 |
returnsTerminatedThread); |
2002 |
try (PoolCleaner cleaner = cleaner(p)) { |
2003 |
assertThrows(IllegalThreadStateException.class, |
2004 |
() -> p.execute(() -> {})); |
2005 |
} |
2006 |
} |
2007 |
|
2008 |
public void testThreadFactoryReturnsStartedThread_shouldThrow() { |
2009 |
if (!testImplementationDetails) |
2010 |
return; |
2011 |
|
2012 |
CountDownLatch latch = new CountDownLatch(1); |
2013 |
Runnable awaitLatch = () -> { |
2014 |
try { latch.await(); } |
2015 |
catch (InterruptedException ex) { throw new Error(ex); }}; |
2016 |
ThreadFactory returnsStartedThread = runnable -> { |
2017 |
Thread thread = new Thread(awaitLatch); |
2018 |
thread.start(); |
2019 |
return thread; |
2020 |
}; |
2021 |
ThreadPoolExecutor p = |
2022 |
new ThreadPoolExecutor(1, 1, 1, SECONDS, |
2023 |
new ArrayBlockingQueue<Runnable>(1), |
2024 |
returnsStartedThread); |
2025 |
try (PoolCleaner cleaner = cleaner(p)) { |
2026 |
assertThrows(IllegalThreadStateException.class, |
2027 |
() -> p.execute(() -> {})); |
2028 |
latch.countDown(); |
2029 |
} |
2030 |
} |
2031 |
|
2032 |
} |