| /* |
| * Written by Doug Lea with assistance from members of JCP JSR-166 |
| * Expert Group and released to the public domain, as explained at |
| * http://creativecommons.org/publicdomain/zero/1.0/ |
| * Other contributors include Andrew Wright, Jeffrey Hayes, |
| * Pat Fisher, Mike Judd. |
| */ |
| |
| package jsr166; |
| |
| import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| import static java.util.concurrent.TimeUnit.SECONDS; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.ArrayBlockingQueue; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.FutureTask; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.RejectedExecutionException; |
| import java.util.concurrent.RejectedExecutionHandler; |
| import java.util.concurrent.RunnableFuture; |
| import java.util.concurrent.SynchronousQueue; |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.TimeoutException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.locks.Condition; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| import junit.framework.Test; |
| import junit.framework.TestSuite; |
| |
| public class ThreadPoolExecutorSubclassTest extends JSR166TestCase { |
| // android-note: Removed because the CTS runner does a bad job of |
| // retrying tests that have suite() declarations. |
| // |
| // public static void main(String[] args) { |
| // main(suite(), args); |
| // } |
| // public static Test suite() { |
| // return new TestSuite(ThreadPoolExecutorSubclassTest.class); |
| // } |
| |
| static class CustomTask<V> implements RunnableFuture<V> { |
| final Callable<V> callable; |
| final ReentrantLock lock = new ReentrantLock(); |
| final Condition cond = lock.newCondition(); |
| boolean done; |
| boolean cancelled; |
| V result; |
| Thread thread; |
| Exception exception; |
| CustomTask(Callable<V> c) { |
| if (c == null) throw new NullPointerException(); |
| callable = c; |
| } |
| CustomTask(final Runnable r, final V res) { |
| if (r == null) throw new NullPointerException(); |
| callable = new Callable<V>() { |
| public V call() throws Exception { r.run(); return res; }}; |
| } |
| public boolean isDone() { |
| lock.lock(); try { return done; } finally { lock.unlock() ; } |
| } |
| public boolean isCancelled() { |
| lock.lock(); try { return cancelled; } finally { lock.unlock() ; } |
| } |
| public boolean cancel(boolean mayInterrupt) { |
| lock.lock(); |
| try { |
| if (!done) { |
| cancelled = true; |
| done = true; |
| if (mayInterrupt && thread != null) |
| thread.interrupt(); |
| return true; |
| } |
| return false; |
| } |
| finally { lock.unlock() ; } |
| } |
| public void run() { |
| lock.lock(); |
| try { |
| if (done) |
| return; |
| thread = Thread.currentThread(); |
| } |
| finally { lock.unlock() ; } |
| V v = null; |
| Exception e = null; |
| try { |
| v = callable.call(); |
| } |
| catch (Exception ex) { |
| e = ex; |
| } |
| lock.lock(); |
| try { |
| if (!done) { |
| result = v; |
| exception = e; |
| done = true; |
| thread = null; |
| cond.signalAll(); |
| } |
| } |
| finally { lock.unlock(); } |
| } |
| public V get() throws InterruptedException, ExecutionException { |
| lock.lock(); |
| try { |
| while (!done) |
| cond.await(); |
| if (cancelled) |
| throw new CancellationException(); |
| if (exception != null) |
| throw new ExecutionException(exception); |
| return result; |
| } |
| finally { lock.unlock(); } |
| } |
| public V get(long timeout, TimeUnit unit) |
| throws InterruptedException, ExecutionException, TimeoutException { |
| long nanos = unit.toNanos(timeout); |
| lock.lock(); |
| try { |
| while (!done) { |
| if (nanos <= 0L) |
| throw new TimeoutException(); |
| nanos = cond.awaitNanos(nanos); |
| } |
| if (cancelled) |
| throw new CancellationException(); |
| if (exception != null) |
| throw new ExecutionException(exception); |
| return result; |
| } |
| finally { lock.unlock(); } |
| } |
| } |
| |
| static class CustomTPE extends ThreadPoolExecutor { |
| protected <V> RunnableFuture<V> newTaskFor(Callable<V> c) { |
| return new CustomTask<V>(c); |
| } |
| protected <V> RunnableFuture<V> newTaskFor(Runnable r, V v) { |
| return new CustomTask<V>(r, v); |
| } |
| |
| CustomTPE(int corePoolSize, |
| int maximumPoolSize, |
| long keepAliveTime, |
| TimeUnit unit, |
| BlockingQueue<Runnable> workQueue) { |
| super(corePoolSize, maximumPoolSize, keepAliveTime, unit, |
| workQueue); |
| } |
| CustomTPE(int corePoolSize, |
| int maximumPoolSize, |
| long keepAliveTime, |
| TimeUnit unit, |
| BlockingQueue<Runnable> workQueue, |
| ThreadFactory threadFactory) { |
| super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, |
| threadFactory); |
| } |
| |
| CustomTPE(int corePoolSize, |
| int maximumPoolSize, |
| long keepAliveTime, |
| TimeUnit unit, |
| BlockingQueue<Runnable> workQueue, |
| RejectedExecutionHandler handler) { |
| super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, |
| handler); |
| } |
| CustomTPE(int corePoolSize, |
| int maximumPoolSize, |
| long keepAliveTime, |
| TimeUnit unit, |
| BlockingQueue<Runnable> workQueue, |
| ThreadFactory threadFactory, |
| RejectedExecutionHandler handler) { |
| super(corePoolSize, maximumPoolSize, keepAliveTime, unit, |
| workQueue, threadFactory, handler); |
| } |
| |
| final CountDownLatch beforeCalled = new CountDownLatch(1); |
| final CountDownLatch afterCalled = new CountDownLatch(1); |
| final CountDownLatch terminatedCalled = new CountDownLatch(1); |
| |
| public CustomTPE() { |
| super(1, 1, LONG_DELAY_MS, MILLISECONDS, new SynchronousQueue<Runnable>()); |
| } |
| protected void beforeExecute(Thread t, Runnable r) { |
| beforeCalled.countDown(); |
| } |
| protected void afterExecute(Runnable r, Throwable t) { |
| afterCalled.countDown(); |
| } |
| protected void terminated() { |
| terminatedCalled.countDown(); |
| } |
| |
| public boolean beforeCalled() { |
| return beforeCalled.getCount() == 0; |
| } |
| public boolean afterCalled() { |
| return afterCalled.getCount() == 0; |
| } |
| public boolean terminatedCalled() { |
| return terminatedCalled.getCount() == 0; |
| } |
| } |
| |
| static class FailingThreadFactory implements ThreadFactory { |
| int calls = 0; |
| public Thread newThread(Runnable r) { |
| if (++calls > 1) return null; |
| return new Thread(r); |
| } |
| } |
| |
| /** |
| * execute successfully executes a runnable |
| */ |
| public void testExecute() throws InterruptedException { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| 2 * LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final CountDownLatch done = new CountDownLatch(1); |
| final Runnable task = new CheckedRunnable() { |
| public void realRun() { done.countDown(); }}; |
| p.execute(task); |
| assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS)); |
| } |
| } |
| |
| /** |
| * getActiveCount increases but doesn't overestimate, when a |
| * thread becomes active |
| */ |
| public void testGetActiveCount() throws InterruptedException { |
| final CountDownLatch done = new CountDownLatch(1); |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| assertEquals(0, p.getActiveCount()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| assertEquals(1, p.getActiveCount()); |
| await(done); |
| }}); |
| await(threadStarted); |
| assertEquals(1, p.getActiveCount()); |
| } |
| } |
| |
| /** |
| * prestartCoreThread starts a thread if under corePoolSize, else doesn't |
| */ |
| public void testPrestartCoreThread() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 6, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertEquals(0, p.getPoolSize()); |
| assertTrue(p.prestartCoreThread()); |
| assertEquals(1, p.getPoolSize()); |
| assertTrue(p.prestartCoreThread()); |
| assertEquals(2, p.getPoolSize()); |
| assertFalse(p.prestartCoreThread()); |
| assertEquals(2, p.getPoolSize()); |
| p.setCorePoolSize(4); |
| assertTrue(p.prestartCoreThread()); |
| assertEquals(3, p.getPoolSize()); |
| assertTrue(p.prestartCoreThread()); |
| assertEquals(4, p.getPoolSize()); |
| assertFalse(p.prestartCoreThread()); |
| assertEquals(4, p.getPoolSize()); |
| } |
| } |
| |
| /** |
| * prestartAllCoreThreads starts all corePoolSize threads |
| */ |
| public void testPrestartAllCoreThreads() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 6, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertEquals(0, p.getPoolSize()); |
| p.prestartAllCoreThreads(); |
| assertEquals(2, p.getPoolSize()); |
| p.prestartAllCoreThreads(); |
| assertEquals(2, p.getPoolSize()); |
| p.setCorePoolSize(4); |
| p.prestartAllCoreThreads(); |
| assertEquals(4, p.getPoolSize()); |
| p.prestartAllCoreThreads(); |
| assertEquals(4, p.getPoolSize()); |
| } |
| } |
| |
| /** |
| * getCompletedTaskCount increases, but doesn't overestimate, |
| * when tasks complete |
| */ |
| public void testGetCompletedTaskCount() throws InterruptedException { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch threadProceed = new CountDownLatch(1); |
| final CountDownLatch threadDone = new CountDownLatch(1); |
| assertEquals(0, p.getCompletedTaskCount()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| assertEquals(0, p.getCompletedTaskCount()); |
| threadProceed.await(); |
| threadDone.countDown(); |
| }}); |
| await(threadStarted); |
| assertEquals(0, p.getCompletedTaskCount()); |
| threadProceed.countDown(); |
| threadDone.await(); |
| long startTime = System.nanoTime(); |
| while (p.getCompletedTaskCount() != 1) { |
| if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
| fail("timed out"); |
| Thread.yield(); |
| } |
| } |
| } |
| |
| /** |
| * getCorePoolSize returns size given in constructor if not otherwise set |
| */ |
| public void testGetCorePoolSize() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertEquals(1, p.getCorePoolSize()); |
| } |
| } |
| |
| /** |
| * getKeepAliveTime returns value given in constructor if not otherwise set |
| */ |
| public void testGetKeepAliveTime() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 2, |
| 1000, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertEquals(1, p.getKeepAliveTime(SECONDS)); |
| } |
| } |
| |
| /** |
| * getThreadFactory returns factory in constructor if not set |
| */ |
| public void testGetThreadFactory() { |
| final ThreadFactory threadFactory = new SimpleThreadFactory(); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| threadFactory, |
| new NoOpREHandler()); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertSame(threadFactory, p.getThreadFactory()); |
| } |
| } |
| |
| /** |
| * setThreadFactory sets the thread factory returned by getThreadFactory |
| */ |
| public void testSetThreadFactory() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| ThreadFactory threadFactory = new SimpleThreadFactory(); |
| p.setThreadFactory(threadFactory); |
| assertSame(threadFactory, p.getThreadFactory()); |
| } |
| } |
| |
| /** |
| * setThreadFactory(null) throws NPE |
| */ |
| public void testSetThreadFactoryNull() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.setThreadFactory(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * getRejectedExecutionHandler returns handler in constructor if not set |
| */ |
| public void testGetRejectedExecutionHandler() { |
| final RejectedExecutionHandler handler = new NoOpREHandler(); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| handler); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertSame(handler, p.getRejectedExecutionHandler()); |
| } |
| } |
| |
| /** |
| * setRejectedExecutionHandler sets the handler returned by |
| * getRejectedExecutionHandler |
| */ |
| public void testSetRejectedExecutionHandler() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| RejectedExecutionHandler handler = new NoOpREHandler(); |
| p.setRejectedExecutionHandler(handler); |
| assertSame(handler, p.getRejectedExecutionHandler()); |
| } |
| } |
| |
| /** |
| * setRejectedExecutionHandler(null) throws NPE |
| */ |
| public void testSetRejectedExecutionHandlerNull() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.setRejectedExecutionHandler(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * getLargestPoolSize increases, but doesn't overestimate, when |
| * multiple threads active |
| */ |
| public void testGetLargestPoolSize() throws InterruptedException { |
| final int THREADS = 3; |
| final CountDownLatch done = new CountDownLatch(1); |
| final ThreadPoolExecutor p = |
| new CustomTPE(THREADS, THREADS, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| assertEquals(0, p.getLargestPoolSize()); |
| final CountDownLatch threadsStarted = new CountDownLatch(THREADS); |
| for (int i = 0; i < THREADS; i++) |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadsStarted.countDown(); |
| await(done); |
| assertEquals(THREADS, p.getLargestPoolSize()); |
| }}); |
| await(threadsStarted); |
| assertEquals(THREADS, p.getLargestPoolSize()); |
| } |
| assertEquals(THREADS, p.getLargestPoolSize()); |
| } |
| |
| /** |
| * getMaximumPoolSize returns value given in constructor if not |
| * otherwise set |
| */ |
| public void testGetMaximumPoolSize() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 3, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertEquals(3, p.getMaximumPoolSize()); |
| p.setMaximumPoolSize(5); |
| assertEquals(5, p.getMaximumPoolSize()); |
| p.setMaximumPoolSize(4); |
| assertEquals(4, p.getMaximumPoolSize()); |
| } |
| } |
| |
| /** |
| * getPoolSize increases, but doesn't overestimate, when threads |
| * become active |
| */ |
| public void testGetPoolSize() throws InterruptedException { |
| final CountDownLatch done = new CountDownLatch(1); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| assertEquals(0, p.getPoolSize()); |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| assertEquals(1, p.getPoolSize()); |
| await(done); |
| }}); |
| await(threadStarted); |
| assertEquals(1, p.getPoolSize()); |
| } |
| } |
| |
| /** |
| * getTaskCount increases, but doesn't overestimate, when tasks submitted |
| */ |
| public void testGetTaskCount() throws InterruptedException { |
| final int TASKS = 3; |
| final CountDownLatch done = new CountDownLatch(1); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| assertEquals(0, p.getTaskCount()); |
| assertEquals(0, p.getCompletedTaskCount()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| await(done); |
| }}); |
| await(threadStarted); |
| assertEquals(1, p.getTaskCount()); |
| assertEquals(0, p.getCompletedTaskCount()); |
| for (int i = 0; i < TASKS; i++) { |
| assertEquals(1 + i, p.getTaskCount()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| assertEquals(1 + TASKS, p.getTaskCount()); |
| await(done); |
| }}); |
| } |
| assertEquals(1 + TASKS, p.getTaskCount()); |
| assertEquals(0, p.getCompletedTaskCount()); |
| } |
| assertEquals(1 + TASKS, p.getTaskCount()); |
| assertEquals(1 + TASKS, p.getCompletedTaskCount()); |
| } |
| |
| /** |
| * isShutdown is false before shutdown, true after |
| */ |
| public void testIsShutdown() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertFalse(p.isShutdown()); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| assertTrue(p.isShutdown()); |
| } |
| } |
| |
| /** |
| * isTerminated is false before termination, true after |
| */ |
| public void testIsTerminated() throws InterruptedException { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| assertFalse(p.isTerminating()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| assertFalse(p.isTerminating()); |
| threadStarted.countDown(); |
| await(done); |
| }}); |
| await(threadStarted); |
| assertFalse(p.isTerminating()); |
| done.countDown(); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isTerminated()); |
| assertFalse(p.isTerminating()); |
| } |
| } |
| |
| /** |
| * isTerminating is not true when running or when terminated |
| */ |
| public void testIsTerminating() throws InterruptedException { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| assertFalse(p.isTerminating()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| assertFalse(p.isTerminating()); |
| threadStarted.countDown(); |
| await(done); |
| }}); |
| await(threadStarted); |
| assertFalse(p.isTerminating()); |
| done.countDown(); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isTerminated()); |
| assertFalse(p.isTerminating()); |
| } |
| } |
| |
| /** |
| * getQueue returns the work queue, which contains queued tasks |
| */ |
| public void testGetQueue() throws InterruptedException { |
| final CountDownLatch done = new CountDownLatch(1); |
| final BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| q); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| FutureTask[] tasks = new FutureTask[5]; |
| for (int i = 0; i < tasks.length; i++) { |
| Callable task = new CheckedCallable<Boolean>() { |
| public Boolean realCall() throws InterruptedException { |
| threadStarted.countDown(); |
| assertSame(q, p.getQueue()); |
| await(done); |
| return Boolean.TRUE; |
| }}; |
| tasks[i] = new FutureTask(task); |
| p.execute(tasks[i]); |
| } |
| await(threadStarted); |
| assertSame(q, p.getQueue()); |
| assertFalse(q.contains(tasks[0])); |
| assertTrue(q.contains(tasks[tasks.length - 1])); |
| assertEquals(tasks.length - 1, q.size()); |
| } |
| } |
| |
| /** |
| * remove(task) removes queued task, and fails to remove active task |
| */ |
| public void testRemove() throws InterruptedException { |
| final CountDownLatch done = new CountDownLatch(1); |
| BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| q); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| Runnable[] tasks = new Runnable[6]; |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| for (int i = 0; i < tasks.length; i++) { |
| tasks[i] = new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| await(done); |
| }}; |
| p.execute(tasks[i]); |
| } |
| await(threadStarted); |
| assertFalse(p.remove(tasks[0])); |
| assertTrue(q.contains(tasks[4])); |
| assertTrue(q.contains(tasks[3])); |
| assertTrue(p.remove(tasks[4])); |
| assertFalse(p.remove(tasks[4])); |
| assertFalse(q.contains(tasks[4])); |
| assertTrue(q.contains(tasks[3])); |
| assertTrue(p.remove(tasks[3])); |
| assertFalse(q.contains(tasks[3])); |
| } |
| } |
| |
| /** |
| * purge removes cancelled tasks from the queue |
| */ |
| public void testPurge() throws InterruptedException { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| final BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| q); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| FutureTask[] tasks = new FutureTask[5]; |
| for (int i = 0; i < tasks.length; i++) { |
| Callable task = new CheckedCallable<Boolean>() { |
| public Boolean realCall() throws InterruptedException { |
| threadStarted.countDown(); |
| await(done); |
| return Boolean.TRUE; |
| }}; |
| tasks[i] = new FutureTask(task); |
| p.execute(tasks[i]); |
| } |
| await(threadStarted); |
| assertEquals(tasks.length, p.getTaskCount()); |
| assertEquals(tasks.length - 1, q.size()); |
| assertEquals(1L, p.getActiveCount()); |
| assertEquals(0L, p.getCompletedTaskCount()); |
| tasks[4].cancel(true); |
| tasks[3].cancel(false); |
| p.purge(); |
| assertEquals(tasks.length - 3, q.size()); |
| assertEquals(tasks.length - 2, p.getTaskCount()); |
| p.purge(); // Nothing to do |
| assertEquals(tasks.length - 3, q.size()); |
| assertEquals(tasks.length - 2, p.getTaskCount()); |
| } |
| } |
| |
| /** |
| * shutdownNow returns a list containing tasks that were not run, |
| * and those tasks are drained from the queue |
| */ |
| public void testShutdownNow() throws InterruptedException { |
| final int poolSize = 2; |
| final int count = 5; |
| final AtomicInteger ran = new AtomicInteger(0); |
| final ThreadPoolExecutor p = |
| new CustomTPE(poolSize, poolSize, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| final CountDownLatch threadsStarted = new CountDownLatch(poolSize); |
| Runnable waiter = new CheckedRunnable() { public void realRun() { |
| threadsStarted.countDown(); |
| try { |
| MILLISECONDS.sleep(2 * LONG_DELAY_MS); |
| } catch (InterruptedException success) {} |
| ran.getAndIncrement(); |
| }}; |
| for (int i = 0; i < count; i++) |
| p.execute(waiter); |
| await(threadsStarted); |
| assertEquals(poolSize, p.getActiveCount()); |
| assertEquals(0, p.getCompletedTaskCount()); |
| final List<Runnable> queuedTasks; |
| try { |
| queuedTasks = p.shutdownNow(); |
| } catch (SecurityException ok) { |
| return; // Allowed in case test doesn't have privs |
| } |
| assertTrue(p.isShutdown()); |
| assertTrue(p.getQueue().isEmpty()); |
| assertEquals(count - poolSize, queuedTasks.size()); |
| assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isTerminated()); |
| assertEquals(poolSize, ran.get()); |
| assertEquals(poolSize, p.getCompletedTaskCount()); |
| } |
| |
| // Exception Tests |
| |
| /** |
| * Constructor throws if corePoolSize argument is less than zero |
| */ |
| public void testConstructor1() { |
| try { |
| new CustomTPE(-1, 1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if maximumPoolSize is less than zero |
| */ |
| public void testConstructor2() { |
| try { |
| new CustomTPE(1, -1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if maximumPoolSize is equal to zero |
| */ |
| public void testConstructor3() { |
| try { |
| new CustomTPE(1, 0, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if keepAliveTime is less than zero |
| */ |
| public void testConstructor4() { |
| try { |
| new CustomTPE(1, 2, -1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if corePoolSize is greater than the maximumPoolSize |
| */ |
| public void testConstructor5() { |
| try { |
| new CustomTPE(2, 1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if workQueue is set to null |
| */ |
| public void testConstructorNullPointerException() { |
| try { |
| new CustomTPE(1, 2, 1L, SECONDS, null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Constructor throws if corePoolSize argument is less than zero |
| */ |
| public void testConstructor6() { |
| try { |
| new CustomTPE(-1, 1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if maximumPoolSize is less than zero |
| */ |
| public void testConstructor7() { |
| try { |
| new CustomTPE(1,-1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if maximumPoolSize is equal to zero |
| */ |
| public void testConstructor8() { |
| try { |
| new CustomTPE(1, 0, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if keepAliveTime is less than zero |
| */ |
| public void testConstructor9() { |
| try { |
| new CustomTPE(1, 2, -1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if corePoolSize is greater than the maximumPoolSize |
| */ |
| public void testConstructor10() { |
| try { |
| new CustomTPE(2, 1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if workQueue is set to null |
| */ |
| public void testConstructorNullPointerException2() { |
| try { |
| new CustomTPE(1, 2, 1L, SECONDS, null, new SimpleThreadFactory()); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Constructor throws if threadFactory is set to null |
| */ |
| public void testConstructorNullPointerException3() { |
| try { |
| new CustomTPE(1, 2, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| (ThreadFactory) null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Constructor throws if corePoolSize argument is less than zero |
| */ |
| public void testConstructor11() { |
| try { |
| new CustomTPE(-1, 1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if maximumPoolSize is less than zero |
| */ |
| public void testConstructor12() { |
| try { |
| new CustomTPE(1, -1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if maximumPoolSize is equal to zero |
| */ |
| public void testConstructor13() { |
| try { |
| new CustomTPE(1, 0, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if keepAliveTime is less than zero |
| */ |
| public void testConstructor14() { |
| try { |
| new CustomTPE(1, 2, -1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if corePoolSize is greater than the maximumPoolSize |
| */ |
| public void testConstructor15() { |
| try { |
| new CustomTPE(2, 1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if workQueue is set to null |
| */ |
| public void testConstructorNullPointerException4() { |
| try { |
| new CustomTPE(1, 2, 1L, SECONDS, |
| null, |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Constructor throws if handler is set to null |
| */ |
| public void testConstructorNullPointerException5() { |
| try { |
| new CustomTPE(1, 2, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| (RejectedExecutionHandler) null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Constructor throws if corePoolSize argument is less than zero |
| */ |
| public void testConstructor16() { |
| try { |
| new CustomTPE(-1, 1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory(), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if maximumPoolSize is less than zero |
| */ |
| public void testConstructor17() { |
| try { |
| new CustomTPE(1, -1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory(), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if maximumPoolSize is equal to zero |
| */ |
| public void testConstructor18() { |
| try { |
| new CustomTPE(1, 0, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory(), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if keepAliveTime is less than zero |
| */ |
| public void testConstructor19() { |
| try { |
| new CustomTPE(1, 2, -1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory(), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if corePoolSize is greater than the maximumPoolSize |
| */ |
| public void testConstructor20() { |
| try { |
| new CustomTPE(2, 1, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory(), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| |
| /** |
| * Constructor throws if workQueue is null |
| */ |
| public void testConstructorNullPointerException6() { |
| try { |
| new CustomTPE(1, 2, 1L, SECONDS, |
| null, |
| new SimpleThreadFactory(), |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Constructor throws if handler is null |
| */ |
| public void testConstructorNullPointerException7() { |
| try { |
| new CustomTPE(1, 2, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| new SimpleThreadFactory(), |
| (RejectedExecutionHandler) null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Constructor throws if ThreadFactory is null |
| */ |
| public void testConstructorNullPointerException8() { |
| try { |
| new CustomTPE(1, 2, 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10), |
| (ThreadFactory) null, |
| new NoOpREHandler()); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * execute throws RejectedExecutionException if saturated. |
| */ |
| public void testSaturatedExecute() { |
| final CountDownLatch done = new CountDownLatch(1); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(1)); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| Runnable task = new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| await(done); |
| }}; |
| for (int i = 0; i < 2; ++i) |
| p.execute(task); |
| for (int i = 0; i < 2; ++i) { |
| try { |
| p.execute(task); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) {} |
| assertTrue(p.getTaskCount() <= 2); |
| } |
| } |
| } |
| |
| /** |
| * executor using CallerRunsPolicy runs task if saturated. |
| */ |
| public void testSaturatedExecute2() { |
| final CountDownLatch done = new CountDownLatch(1); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(1), |
| new CustomTPE.CallerRunsPolicy()); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| Runnable blocker = new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| await(done); |
| }}; |
| p.execute(blocker); |
| TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5]; |
| for (int i = 0; i < tasks.length; i++) |
| tasks[i] = new TrackedNoOpRunnable(); |
| for (int i = 0; i < tasks.length; i++) |
| p.execute(tasks[i]); |
| for (int i = 1; i < tasks.length; i++) |
| assertTrue(tasks[i].done); |
| assertFalse(tasks[0].done); // waiting in queue |
| } |
| } |
| |
| /** |
| * executor using DiscardPolicy drops task if saturated. |
| */ |
| public void testSaturatedExecute3() { |
| final TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5]; |
| for (int i = 0; i < tasks.length; ++i) |
| tasks[i] = new TrackedNoOpRunnable(); |
| final CountDownLatch done = new CountDownLatch(1); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(1), |
| new CustomTPE.DiscardPolicy()); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| p.execute(awaiter(done)); |
| |
| for (TrackedNoOpRunnable task : tasks) |
| p.execute(task); |
| for (int i = 1; i < tasks.length; i++) |
| assertFalse(tasks[i].done); |
| } |
| for (int i = 1; i < tasks.length; i++) |
| assertFalse(tasks[i].done); |
| assertTrue(tasks[0].done); // was waiting in queue |
| } |
| |
| /** |
| * executor using DiscardOldestPolicy drops oldest task if saturated. |
| */ |
| public void testSaturatedExecute4() { |
| final CountDownLatch done = new CountDownLatch(1); |
| LatchAwaiter r1 = awaiter(done); |
| LatchAwaiter r2 = awaiter(done); |
| LatchAwaiter r3 = awaiter(done); |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(1), |
| new CustomTPE.DiscardOldestPolicy()); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| assertEquals(LatchAwaiter.NEW, r1.state); |
| assertEquals(LatchAwaiter.NEW, r2.state); |
| assertEquals(LatchAwaiter.NEW, r3.state); |
| p.execute(r1); |
| p.execute(r2); |
| assertTrue(p.getQueue().contains(r2)); |
| p.execute(r3); |
| assertFalse(p.getQueue().contains(r2)); |
| assertTrue(p.getQueue().contains(r3)); |
| } |
| assertEquals(LatchAwaiter.DONE, r1.state); |
| assertEquals(LatchAwaiter.NEW, r2.state); |
| assertEquals(LatchAwaiter.DONE, r3.state); |
| } |
| |
| /** |
| * execute throws RejectedExecutionException if shutdown |
| */ |
| public void testRejectedExecutionExceptionOnShutdown() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(1)); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.execute(new NoOpRunnable()); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) {} |
| } |
| } |
| |
| /** |
| * execute using CallerRunsPolicy drops task on shutdown |
| */ |
| public void testCallerRunsOnShutdown() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(1), |
| new CustomTPE.CallerRunsPolicy()); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| try (PoolCleaner cleaner = cleaner(p)) { |
| TrackedNoOpRunnable r = new TrackedNoOpRunnable(); |
| p.execute(r); |
| assertFalse(r.done); |
| } |
| } |
| |
| /** |
| * execute using DiscardPolicy drops task on shutdown |
| */ |
| public void testDiscardOnShutdown() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(1), |
| new CustomTPE.DiscardPolicy()); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| try (PoolCleaner cleaner = cleaner(p)) { |
| TrackedNoOpRunnable r = new TrackedNoOpRunnable(); |
| p.execute(r); |
| assertFalse(r.done); |
| } |
| } |
| |
| /** |
| * execute using DiscardOldestPolicy drops task on shutdown |
| */ |
| public void testDiscardOldestOnShutdown() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(1), |
| new CustomTPE.DiscardOldestPolicy()); |
| |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| try (PoolCleaner cleaner = cleaner(p)) { |
| TrackedNoOpRunnable r = new TrackedNoOpRunnable(); |
| p.execute(r); |
| assertFalse(r.done); |
| } |
| } |
| |
| /** |
| * execute(null) throws NPE |
| */ |
| public void testExecuteNull() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 2, |
| 1L, SECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.execute(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * setCorePoolSize of negative value throws IllegalArgumentException |
| */ |
| public void testCorePoolSizeIllegalArgumentException() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(1, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.setCorePoolSize(-1); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| } |
| |
| /** |
| * setMaximumPoolSize(int) throws IllegalArgumentException |
| * if given a value less the core pool size |
| */ |
| public void testMaximumPoolSizeIllegalArgumentException() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 3, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.setMaximumPoolSize(1); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| } |
| |
| /** |
| * setMaximumPoolSize throws IllegalArgumentException |
| * if given a negative value |
| */ |
| public void testMaximumPoolSizeIllegalArgumentException2() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 3, |
| LONG_DELAY_MS, |
| MILLISECONDS,new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.setMaximumPoolSize(-1); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| } |
| |
| /** |
| * setKeepAliveTime throws IllegalArgumentException |
| * when given a negative value |
| */ |
| public void testKeepAliveTimeIllegalArgumentException() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 3, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.setKeepAliveTime(-1, MILLISECONDS); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| } |
| |
| /** |
| * terminated() is called on termination |
| */ |
| public void testTerminated() { |
| CustomTPE p = new CustomTPE(); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| assertTrue(p.terminatedCalled()); |
| assertTrue(p.isShutdown()); |
| } |
| } |
| |
| /** |
| * beforeExecute and afterExecute are called when executing task |
| */ |
| public void testBeforeAfter() throws InterruptedException { |
| CustomTPE p = new CustomTPE(); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final CountDownLatch done = new CountDownLatch(1); |
| p.execute(new CheckedRunnable() { |
| public void realRun() { |
| done.countDown(); |
| }}); |
| await(p.afterCalled); |
| assertEquals(0, done.getCount()); |
| assertTrue(p.afterCalled()); |
| assertTrue(p.beforeCalled()); |
| } |
| } |
| |
| /** |
| * completed submit of callable returns result |
| */ |
| public void testSubmitCallable() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| Future<String> future = e.submit(new StringTask()); |
| String result = future.get(); |
| assertSame(TEST_STRING, result); |
| } |
| } |
| |
| /** |
| * completed submit of runnable returns successfully |
| */ |
| public void testSubmitRunnable() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| Future<?> future = e.submit(new NoOpRunnable()); |
| future.get(); |
| assertTrue(future.isDone()); |
| } |
| } |
| |
| /** |
| * completed submit of (runnable, result) returns result |
| */ |
| public void testSubmitRunnable2() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
| String result = future.get(); |
| assertSame(TEST_STRING, result); |
| } |
| } |
| |
| /** |
| * invokeAny(null) throws NPE |
| */ |
| public void testInvokeAny1() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| try { |
| e.invokeAny(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * invokeAny(empty collection) throws IAE |
| */ |
| public void testInvokeAny2() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| try { |
| e.invokeAny(new ArrayList<Callable<String>>()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| } |
| |
| /** |
| * invokeAny(c) throws NPE if c has null elements |
| */ |
| public void testInvokeAny3() throws Exception { |
| CountDownLatch latch = new CountDownLatch(1); |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(latchAwaitingStringTask(latch)); |
| l.add(null); |
| try { |
| e.invokeAny(l); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| latch.countDown(); |
| } |
| } |
| |
| /** |
| * invokeAny(c) throws ExecutionException if no task completes |
| */ |
| public void testInvokeAny4() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new NPETask()); |
| try { |
| e.invokeAny(l); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| assertTrue(success.getCause() instanceof NullPointerException); |
| } |
| } |
| } |
| |
| /** |
| * invokeAny(c) returns result of some task |
| */ |
| public void testInvokeAny5() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(new StringTask()); |
| String result = e.invokeAny(l); |
| assertSame(TEST_STRING, result); |
| } |
| } |
| |
| /** |
| * invokeAll(null) throws NPE |
| */ |
| public void testInvokeAll1() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| try { |
| e.invokeAll(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * invokeAll(empty collection) returns empty collection |
| */ |
| public void testInvokeAll2() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>()); |
| assertTrue(r.isEmpty()); |
| } |
| } |
| |
| /** |
| * invokeAll(c) throws NPE if c has null elements |
| */ |
| public void testInvokeAll3() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(null); |
| try { |
| e.invokeAll(l); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * get of element of invokeAll(c) throws exception on failed task |
| */ |
| public void testInvokeAll4() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new NPETask()); |
| List<Future<String>> futures = e.invokeAll(l); |
| assertEquals(1, futures.size()); |
| try { |
| futures.get(0).get(); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| assertTrue(success.getCause() instanceof NullPointerException); |
| } |
| } |
| } |
| |
| /** |
| * invokeAll(c) returns results of all completed tasks |
| */ |
| public void testInvokeAll5() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(new StringTask()); |
| List<Future<String>> futures = e.invokeAll(l); |
| assertEquals(2, futures.size()); |
| for (Future<String> future : futures) |
| assertSame(TEST_STRING, future.get()); |
| } |
| } |
| |
| /** |
| * timed invokeAny(null) throws NPE |
| */ |
| public void testTimedInvokeAny1() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| try { |
| e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * timed invokeAny(,,null) throws NPE |
| */ |
| public void testTimedInvokeAnyNullTimeUnit() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| try { |
| e.invokeAny(l, MEDIUM_DELAY_MS, null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * timed invokeAny(empty collection) throws IAE |
| */ |
| public void testTimedInvokeAny2() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| try { |
| e.invokeAny(new ArrayList<Callable<String>>(), |
| MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) {} |
| } |
| } |
| |
| /** |
| * timed invokeAny(c) throws NPE if c has null elements |
| */ |
| public void testTimedInvokeAny3() throws Exception { |
| CountDownLatch latch = new CountDownLatch(1); |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(latchAwaitingStringTask(latch)); |
| l.add(null); |
| try { |
| e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| latch.countDown(); |
| } |
| } |
| |
| /** |
| * timed invokeAny(c) throws ExecutionException if no task completes |
| */ |
| public void testTimedInvokeAny4() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| long startTime = System.nanoTime(); |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new NPETask()); |
| try { |
| e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| assertTrue(success.getCause() instanceof NullPointerException); |
| } |
| assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
| } |
| } |
| |
| /** |
| * timed invokeAny(c) returns result of some task |
| */ |
| public void testTimedInvokeAny5() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| long startTime = System.nanoTime(); |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(new StringTask()); |
| String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
| assertSame(TEST_STRING, result); |
| assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
| } |
| } |
| |
| /** |
| * timed invokeAll(null) throws NPE |
| */ |
| public void testTimedInvokeAll1() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| try { |
| e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * timed invokeAll(,,null) throws NPE |
| */ |
| public void testTimedInvokeAllNullTimeUnit() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| try { |
| e.invokeAll(l, MEDIUM_DELAY_MS, null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * timed invokeAll(empty collection) returns empty collection |
| */ |
| public void testTimedInvokeAll2() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), |
| MEDIUM_DELAY_MS, MILLISECONDS); |
| assertTrue(r.isEmpty()); |
| } |
| } |
| |
| /** |
| * timed invokeAll(c) throws NPE if c has null elements |
| */ |
| public void testTimedInvokeAll3() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(null); |
| try { |
| e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * get of element of invokeAll(c) throws exception on failed task |
| */ |
| public void testTimedInvokeAll4() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new NPETask()); |
| List<Future<String>> futures = |
| e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
| assertEquals(1, futures.size()); |
| try { |
| futures.get(0).get(); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| assertTrue(success.getCause() instanceof NullPointerException); |
| } |
| } |
| } |
| |
| /** |
| * timed invokeAll(c) returns results of all completed tasks |
| */ |
| public void testTimedInvokeAll5() throws Exception { |
| final ExecutorService e = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(new StringTask()); |
| List<Future<String>> futures = |
| e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
| assertEquals(2, futures.size()); |
| for (Future<String> future : futures) |
| assertSame(TEST_STRING, future.get()); |
| } |
| } |
| |
| /** |
| * timed invokeAll(c) cancels tasks not completed by timeout |
| */ |
| public void testTimedInvokeAll6() throws Exception { |
| for (long timeout = timeoutMillis();;) { |
| final CountDownLatch done = new CountDownLatch(1); |
| final Callable<String> waiter = new CheckedCallable<String>() { |
| public String realCall() { |
| try { done.await(LONG_DELAY_MS, MILLISECONDS); } |
| catch (InterruptedException ok) {} |
| return "1"; }}; |
| final ExecutorService p = |
| new CustomTPE(2, 2, |
| LONG_DELAY_MS, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| List<Callable<String>> tasks = new ArrayList<>(); |
| tasks.add(new StringTask("0")); |
| tasks.add(waiter); |
| tasks.add(new StringTask("2")); |
| long startTime = System.nanoTime(); |
| List<Future<String>> futures = |
| p.invokeAll(tasks, timeout, MILLISECONDS); |
| assertEquals(tasks.size(), futures.size()); |
| assertTrue(millisElapsedSince(startTime) >= timeout); |
| for (Future future : futures) |
| assertTrue(future.isDone()); |
| assertTrue(futures.get(1).isCancelled()); |
| try { |
| assertEquals("0", futures.get(0).get()); |
| assertEquals("2", futures.get(2).get()); |
| break; |
| } catch (CancellationException retryWithLongerTimeout) { |
| timeout *= 2; |
| if (timeout >= LONG_DELAY_MS / 2) |
| fail("expected exactly one task to be cancelled"); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Execution continues if there is at least one thread even if |
| * thread factory fails to create more |
| */ |
| public void testFailingThreadFactory() throws InterruptedException { |
| final ExecutorService e = |
| new CustomTPE(100, 100, |
| LONG_DELAY_MS, MILLISECONDS, |
| new LinkedBlockingQueue<Runnable>(), |
| new FailingThreadFactory()); |
| try (PoolCleaner cleaner = cleaner(e)) { |
| final int TASKS = 100; |
| final CountDownLatch done = new CountDownLatch(TASKS); |
| for (int k = 0; k < TASKS; ++k) |
| e.execute(new CheckedRunnable() { |
| public void realRun() { |
| done.countDown(); |
| }}); |
| assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS)); |
| } |
| } |
| |
| /** |
| * allowsCoreThreadTimeOut is by default false. |
| */ |
| public void testAllowsCoreThreadTimeOut() { |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 2, |
| 1000, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertFalse(p.allowsCoreThreadTimeOut()); |
| } |
| } |
| |
| /** |
| * allowCoreThreadTimeOut(true) causes idle threads to time out |
| */ |
| public void testAllowCoreThreadTimeOut_true() throws Exception { |
| long keepAliveTime = timeoutMillis(); |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 10, |
| keepAliveTime, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| p.allowCoreThreadTimeOut(true); |
| p.execute(new CheckedRunnable() { |
| public void realRun() { |
| threadStarted.countDown(); |
| assertEquals(1, p.getPoolSize()); |
| }}); |
| await(threadStarted); |
| delay(keepAliveTime); |
| long startTime = System.nanoTime(); |
| while (p.getPoolSize() > 0 |
| && millisElapsedSince(startTime) < LONG_DELAY_MS) |
| Thread.yield(); |
| assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
| assertEquals(0, p.getPoolSize()); |
| } |
| } |
| |
| /** |
| * allowCoreThreadTimeOut(false) causes idle threads not to time out |
| */ |
| public void testAllowCoreThreadTimeOut_false() throws Exception { |
| long keepAliveTime = timeoutMillis(); |
| final ThreadPoolExecutor p = |
| new CustomTPE(2, 10, |
| keepAliveTime, MILLISECONDS, |
| new ArrayBlockingQueue<Runnable>(10)); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| p.allowCoreThreadTimeOut(false); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| assertTrue(p.getPoolSize() >= 1); |
| }}); |
| delay(2 * keepAliveTime); |
| assertTrue(p.getPoolSize() >= 1); |
| } |
| } |
| |
| /** |
| * get(cancelled task) throws CancellationException |
| * (in part, a test of CustomTPE itself) |
| */ |
| public void testGet_cancelled() throws Exception { |
| final CountDownLatch done = new CountDownLatch(1); |
| final ExecutorService e = |
| new CustomTPE(1, 1, |
| LONG_DELAY_MS, MILLISECONDS, |
| new LinkedBlockingQueue<Runnable>()); |
| try (PoolCleaner cleaner = cleaner(e, done)) { |
| final CountDownLatch blockerStarted = new CountDownLatch(1); |
| final List<Future<?>> futures = new ArrayList<>(); |
| for (int i = 0; i < 2; i++) { |
| Runnable r = new CheckedRunnable() { public void realRun() |
| throws Throwable { |
| blockerStarted.countDown(); |
| assertTrue(done.await(2 * LONG_DELAY_MS, MILLISECONDS)); |
| }}; |
| futures.add(e.submit(r)); |
| } |
| await(blockerStarted); |
| for (Future<?> future : futures) future.cancel(false); |
| for (Future<?> future : futures) { |
| try { |
| future.get(); |
| shouldThrow(); |
| } catch (CancellationException success) {} |
| try { |
| future.get(LONG_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (CancellationException success) {} |
| assertTrue(future.isCancelled()); |
| assertTrue(future.isDone()); |
| } |
| } |
| } |
| |
| } |
