| /* |
| * 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.NANOSECONDS; |
| import static java.util.concurrent.TimeUnit.SECONDS; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| 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.RejectedExecutionException; |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.concurrent.ScheduledThreadPoolExecutor; |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.ThreadPoolExecutor; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| import junit.framework.Test; |
| import junit.framework.TestSuite; |
| |
| public class ScheduledExecutorTest 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(ScheduledExecutorTest.class); |
| // } |
| |
| /** |
| * execute successfully executes a runnable |
| */ |
| public void testExecute() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| 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)); |
| } |
| } |
| |
| /** |
| * delayed schedule of callable successfully executes after delay |
| */ |
| public void testSchedule1() throws Exception { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final long startTime = System.nanoTime(); |
| final CountDownLatch done = new CountDownLatch(1); |
| Callable task = new CheckedCallable<Boolean>() { |
| public Boolean realCall() { |
| done.countDown(); |
| assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| return Boolean.TRUE; |
| }}; |
| Future f = p.schedule(task, timeoutMillis(), MILLISECONDS); |
| assertSame(Boolean.TRUE, f.get()); |
| assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| assertTrue(done.await(0L, MILLISECONDS)); |
| } |
| } |
| |
| /** |
| * delayed schedule of runnable successfully executes after delay |
| */ |
| public void testSchedule3() throws Exception { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final long startTime = System.nanoTime(); |
| final CountDownLatch done = new CountDownLatch(1); |
| Runnable task = new CheckedRunnable() { |
| public void realRun() { |
| done.countDown(); |
| assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| }}; |
| Future f = p.schedule(task, timeoutMillis(), MILLISECONDS); |
| await(done); |
| assertNull(f.get(LONG_DELAY_MS, MILLISECONDS)); |
| assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| } |
| } |
| |
| /** |
| * scheduleAtFixedRate executes runnable after given initial delay |
| */ |
| public void testSchedule4() throws Exception { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final long startTime = System.nanoTime(); |
| final CountDownLatch done = new CountDownLatch(1); |
| Runnable task = new CheckedRunnable() { |
| public void realRun() { |
| done.countDown(); |
| assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| }}; |
| ScheduledFuture f = |
| p.scheduleAtFixedRate(task, timeoutMillis(), |
| LONG_DELAY_MS, MILLISECONDS); |
| await(done); |
| assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| f.cancel(true); |
| } |
| } |
| |
| /** |
| * scheduleWithFixedDelay executes runnable after given initial delay |
| */ |
| public void testSchedule5() throws Exception { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final long startTime = System.nanoTime(); |
| final CountDownLatch done = new CountDownLatch(1); |
| Runnable task = new CheckedRunnable() { |
| public void realRun() { |
| done.countDown(); |
| assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| }}; |
| ScheduledFuture f = |
| p.scheduleWithFixedDelay(task, timeoutMillis(), |
| LONG_DELAY_MS, MILLISECONDS); |
| await(done); |
| assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
| f.cancel(true); |
| } |
| } |
| |
| static class RunnableCounter implements Runnable { |
| AtomicInteger count = new AtomicInteger(0); |
| public void run() { count.getAndIncrement(); } |
| } |
| |
| /** |
| * scheduleAtFixedRate executes series of tasks at given rate. |
| * Eventually, it must hold that: |
| * cycles - 1 <= elapsedMillis/delay < cycles |
| */ |
| public void testFixedRateSequence() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) { |
| final long startTime = System.nanoTime(); |
| final int cycles = 8; |
| final CountDownLatch done = new CountDownLatch(cycles); |
| final Runnable task = new CheckedRunnable() { |
| public void realRun() { done.countDown(); }}; |
| final ScheduledFuture periodicTask = |
| p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS); |
| final int totalDelayMillis = (cycles - 1) * delay; |
| await(done, totalDelayMillis + LONG_DELAY_MS); |
| periodicTask.cancel(true); |
| final long elapsedMillis = millisElapsedSince(startTime); |
| assertTrue(elapsedMillis >= totalDelayMillis); |
| if (elapsedMillis <= cycles * delay) |
| return; |
| // else retry with longer delay |
| } |
| fail("unexpected execution rate"); |
| } |
| } |
| |
| /** |
| * scheduleWithFixedDelay executes series of tasks with given period. |
| * Eventually, it must hold that each task starts at least delay and at |
| * most 2 * delay after the termination of the previous task. |
| */ |
| public void testFixedDelaySequence() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) { |
| final long startTime = System.nanoTime(); |
| final AtomicLong previous = new AtomicLong(startTime); |
| final AtomicBoolean tryLongerDelay = new AtomicBoolean(false); |
| final int cycles = 8; |
| final CountDownLatch done = new CountDownLatch(cycles); |
| final int d = delay; |
| final Runnable task = new CheckedRunnable() { |
| public void realRun() { |
| long now = System.nanoTime(); |
| long elapsedMillis |
| = NANOSECONDS.toMillis(now - previous.get()); |
| if (done.getCount() == cycles) { // first execution |
| if (elapsedMillis >= d) |
| tryLongerDelay.set(true); |
| } else { |
| assertTrue(elapsedMillis >= d); |
| if (elapsedMillis >= 2 * d) |
| tryLongerDelay.set(true); |
| } |
| previous.set(now); |
| done.countDown(); |
| }}; |
| final ScheduledFuture periodicTask = |
| p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS); |
| final int totalDelayMillis = (cycles - 1) * delay; |
| await(done, totalDelayMillis + cycles * LONG_DELAY_MS); |
| periodicTask.cancel(true); |
| final long elapsedMillis = millisElapsedSince(startTime); |
| assertTrue(elapsedMillis >= totalDelayMillis); |
| if (!tryLongerDelay.get()) |
| return; |
| // else retry with longer delay |
| } |
| fail("unexpected execution rate"); |
| } |
| } |
| |
| /** |
| * execute(null) throws NPE |
| */ |
| public void testExecuteNull() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.execute(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * schedule(null) throws NPE |
| */ |
| public void testScheduleNull() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| TrackedCallable callable = null; |
| Future f = p.schedule(callable, SHORT_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * execute throws RejectedExecutionException if shutdown |
| */ |
| public void testSchedule1_RejectedExecutionException() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.shutdown(); |
| p.schedule(new NoOpRunnable(), |
| MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) {} |
| } |
| } |
| |
| /** |
| * schedule throws RejectedExecutionException if shutdown |
| */ |
| public void testSchedule2_RejectedExecutionException() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.shutdown(); |
| p.schedule(new NoOpCallable(), |
| MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) {} |
| } |
| } |
| |
| /** |
| * schedule callable throws RejectedExecutionException if shutdown |
| */ |
| public void testSchedule3_RejectedExecutionException() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.shutdown(); |
| p.schedule(new NoOpCallable(), |
| MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) {} |
| } |
| } |
| |
| /** |
| * scheduleAtFixedRate throws RejectedExecutionException if shutdown |
| */ |
| public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.shutdown(); |
| p.scheduleAtFixedRate(new NoOpRunnable(), |
| MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) {} |
| } |
| } |
| |
| /** |
| * scheduleWithFixedDelay throws RejectedExecutionException if shutdown |
| */ |
| public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.shutdown(); |
| p.scheduleWithFixedDelay(new NoOpRunnable(), |
| MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) {} |
| } |
| } |
| |
| /** |
| * getActiveCount increases but doesn't overestimate, when a |
| * thread becomes active |
| */ |
| public void testGetActiveCount() throws InterruptedException { |
| final CountDownLatch done = new CountDownLatch(1); |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2); |
| 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()); |
| } |
| } |
| |
| /** |
| * getCompletedTaskCount increases, but doesn't overestimate, |
| * when tasks complete |
| */ |
| public void testGetCompletedTaskCount() throws InterruptedException { |
| final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2); |
| 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() throws InterruptedException { |
| ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertEquals(1, p.getCorePoolSize()); |
| } |
| } |
| |
| /** |
| * getLargestPoolSize increases, but doesn't overestimate, when |
| * multiple threads active |
| */ |
| public void testGetLargestPoolSize() throws InterruptedException { |
| final int THREADS = 3; |
| final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS); |
| final CountDownLatch threadsStarted = new CountDownLatch(THREADS); |
| final CountDownLatch done = new CountDownLatch(1); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| assertEquals(0, p.getLargestPoolSize()); |
| 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()); |
| } |
| |
| /** |
| * getPoolSize increases, but doesn't overestimate, when threads |
| * become active |
| */ |
| public void testGetPoolSize() throws InterruptedException { |
| final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| assertEquals(0, p.getPoolSize()); |
| 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 ScheduledThreadPoolExecutor(1); |
| 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()); |
| } |
| |
| /** |
| * getThreadFactory returns factory in constructor if not set |
| */ |
| public void testGetThreadFactory() throws InterruptedException { |
| final ThreadFactory threadFactory = new SimpleThreadFactory(); |
| final ScheduledThreadPoolExecutor p = |
| new ScheduledThreadPoolExecutor(1, threadFactory); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertSame(threadFactory, p.getThreadFactory()); |
| } |
| } |
| |
| /** |
| * setThreadFactory sets the thread factory returned by getThreadFactory |
| */ |
| public void testSetThreadFactory() throws InterruptedException { |
| ThreadFactory threadFactory = new SimpleThreadFactory(); |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| p.setThreadFactory(threadFactory); |
| assertSame(threadFactory, p.getThreadFactory()); |
| } |
| } |
| |
| /** |
| * setThreadFactory(null) throws NPE |
| */ |
| public void testSetThreadFactoryNull() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| try { |
| p.setThreadFactory(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| } |
| |
| /** |
| * isShutdown is false before shutdown, true after |
| */ |
| public void testIsShutdown() { |
| |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try { |
| assertFalse(p.isShutdown()); |
| } |
| finally { |
| 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 ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| assertFalse(p.isTerminated()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| assertFalse(p.isTerminated()); |
| 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()); |
| } |
| } |
| |
| /** |
| * isTerminating is not true when running or when terminated |
| */ |
| public void testIsTerminating() throws InterruptedException { |
| final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| 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 ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| ScheduledFuture[] tasks = new ScheduledFuture[5]; |
| for (int i = 0; i < tasks.length; i++) { |
| Runnable r = new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| await(done); |
| }}; |
| tasks[i] = p.schedule(r, 1, MILLISECONDS); |
| } |
| await(threadStarted); |
| BlockingQueue<Runnable> q = p.getQueue(); |
| assertTrue(q.contains(tasks[tasks.length - 1])); |
| assertFalse(q.contains(tasks[0])); |
| } |
| } |
| |
| /** |
| * remove(task) removes queued task, and fails to remove active task |
| */ |
| public void testRemove() throws InterruptedException { |
| final CountDownLatch done = new CountDownLatch(1); |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p, done)) { |
| ScheduledFuture[] tasks = new ScheduledFuture[5]; |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| for (int i = 0; i < tasks.length; i++) { |
| Runnable r = new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| await(done); |
| }}; |
| tasks[i] = p.schedule(r, 1, MILLISECONDS); |
| } |
| await(threadStarted); |
| BlockingQueue<Runnable> q = p.getQueue(); |
| assertFalse(p.remove((Runnable)tasks[0])); |
| assertTrue(q.contains((Runnable)tasks[4])); |
| assertTrue(q.contains((Runnable)tasks[3])); |
| assertTrue(p.remove((Runnable)tasks[4])); |
| assertFalse(p.remove((Runnable)tasks[4])); |
| assertFalse(q.contains((Runnable)tasks[4])); |
| assertTrue(q.contains((Runnable)tasks[3])); |
| assertTrue(p.remove((Runnable)tasks[3])); |
| assertFalse(q.contains((Runnable)tasks[3])); |
| } |
| } |
| |
| /** |
| * purge eventually removes cancelled tasks from the queue |
| */ |
| public void testPurge() throws InterruptedException { |
| final ScheduledFuture[] tasks = new ScheduledFuture[5]; |
| final Runnable releaser = new Runnable() { public void run() { |
| for (ScheduledFuture task : tasks) |
| if (task != null) task.cancel(true); }}; |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p, releaser)) { |
| for (int i = 0; i < tasks.length; i++) |
| tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(), |
| LONG_DELAY_MS, MILLISECONDS); |
| int max = tasks.length; |
| if (tasks[4].cancel(true)) --max; |
| if (tasks[3].cancel(true)) --max; |
| // There must eventually be an interference-free point at |
| // which purge will not fail. (At worst, when queue is empty.) |
| long startTime = System.nanoTime(); |
| do { |
| p.purge(); |
| long count = p.getTaskCount(); |
| if (count == max) |
| return; |
| } while (millisElapsedSince(startTime) < LONG_DELAY_MS); |
| fail("Purge failed to remove cancelled tasks"); |
| } |
| } |
| |
| /** |
| * 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 ScheduledThreadPoolExecutor p = |
| new ScheduledThreadPoolExecutor(poolSize); |
| 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()); |
| } |
| |
| /** |
| * shutdownNow returns a list containing tasks that were not run, |
| * and those tasks are drained from the queue |
| */ |
| public void testShutdownNow_delayedTasks() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| List<ScheduledFuture> tasks = new ArrayList<>(); |
| for (int i = 0; i < 3; i++) { |
| Runnable r = new NoOpRunnable(); |
| tasks.add(p.schedule(r, 9, SECONDS)); |
| tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS)); |
| tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS)); |
| } |
| if (testImplementationDetails) |
| assertEquals(new HashSet(tasks), new HashSet(p.getQueue())); |
| 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()); |
| if (testImplementationDetails) |
| assertEquals(new HashSet(tasks), new HashSet(queuedTasks)); |
| assertEquals(tasks.size(), queuedTasks.size()); |
| for (ScheduledFuture task : tasks) { |
| assertFalse(task.isDone()); |
| assertFalse(task.isCancelled()); |
| } |
| assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isTerminated()); |
| } |
| |
| /** |
| * By default, periodic tasks are cancelled at shutdown. |
| * By default, delayed tasks keep running after shutdown. |
| * Check that changing the default values work: |
| * - setExecuteExistingDelayedTasksAfterShutdownPolicy |
| * - setContinueExistingPeriodicTasksAfterShutdownPolicy |
| */ |
| public void testShutdown_cancellation() throws Exception { |
| Boolean[] allBooleans = { null, Boolean.FALSE, Boolean.TRUE }; |
| for (Boolean policy : allBooleans) |
| { |
| final int poolSize = 2; |
| final ScheduledThreadPoolExecutor p |
| = new ScheduledThreadPoolExecutor(poolSize); |
| final boolean effectiveDelayedPolicy = (policy != Boolean.FALSE); |
| final boolean effectivePeriodicPolicy = (policy == Boolean.TRUE); |
| final boolean effectiveRemovePolicy = (policy == Boolean.TRUE); |
| if (policy != null) { |
| p.setExecuteExistingDelayedTasksAfterShutdownPolicy(policy); |
| p.setContinueExistingPeriodicTasksAfterShutdownPolicy(policy); |
| p.setRemoveOnCancelPolicy(policy); |
| } |
| assertEquals(effectiveDelayedPolicy, |
| p.getExecuteExistingDelayedTasksAfterShutdownPolicy()); |
| assertEquals(effectivePeriodicPolicy, |
| p.getContinueExistingPeriodicTasksAfterShutdownPolicy()); |
| assertEquals(effectiveRemovePolicy, |
| p.getRemoveOnCancelPolicy()); |
| // Strategy: Wedge the pool with poolSize "blocker" threads |
| final AtomicInteger ran = new AtomicInteger(0); |
| final CountDownLatch poolBlocked = new CountDownLatch(poolSize); |
| final CountDownLatch unblock = new CountDownLatch(1); |
| final CountDownLatch periodicLatch1 = new CountDownLatch(2); |
| final CountDownLatch periodicLatch2 = new CountDownLatch(2); |
| Runnable task = new CheckedRunnable() { public void realRun() |
| throws InterruptedException { |
| poolBlocked.countDown(); |
| assertTrue(unblock.await(LONG_DELAY_MS, MILLISECONDS)); |
| ran.getAndIncrement(); |
| }}; |
| List<Future<?>> blockers = new ArrayList<>(); |
| List<Future<?>> periodics = new ArrayList<>(); |
| List<Future<?>> delayeds = new ArrayList<>(); |
| for (int i = 0; i < poolSize; i++) |
| blockers.add(p.submit(task)); |
| assertTrue(poolBlocked.await(LONG_DELAY_MS, MILLISECONDS)); |
| |
| periodics.add(p.scheduleAtFixedRate(countDowner(periodicLatch1), |
| 1, 1, MILLISECONDS)); |
| periodics.add(p.scheduleWithFixedDelay(countDowner(periodicLatch2), |
| 1, 1, MILLISECONDS)); |
| delayeds.add(p.schedule(task, 1, MILLISECONDS)); |
| |
| assertTrue(p.getQueue().containsAll(periodics)); |
| assertTrue(p.getQueue().containsAll(delayeds)); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| assertTrue(p.isShutdown()); |
| assertFalse(p.isTerminated()); |
| for (Future<?> periodic : periodics) { |
| assertTrue(effectivePeriodicPolicy ^ periodic.isCancelled()); |
| assertTrue(effectivePeriodicPolicy ^ periodic.isDone()); |
| } |
| for (Future<?> delayed : delayeds) { |
| assertTrue(effectiveDelayedPolicy ^ delayed.isCancelled()); |
| assertTrue(effectiveDelayedPolicy ^ delayed.isDone()); |
| } |
| if (testImplementationDetails) { |
| assertEquals(effectivePeriodicPolicy, |
| p.getQueue().containsAll(periodics)); |
| assertEquals(effectiveDelayedPolicy, |
| p.getQueue().containsAll(delayeds)); |
| } |
| // Release all pool threads |
| unblock.countDown(); |
| |
| for (Future<?> delayed : delayeds) { |
| if (effectiveDelayedPolicy) { |
| assertNull(delayed.get()); |
| } |
| } |
| if (effectivePeriodicPolicy) { |
| assertTrue(periodicLatch1.await(LONG_DELAY_MS, MILLISECONDS)); |
| assertTrue(periodicLatch2.await(LONG_DELAY_MS, MILLISECONDS)); |
| for (Future<?> periodic : periodics) { |
| assertTrue(periodic.cancel(false)); |
| assertTrue(periodic.isCancelled()); |
| assertTrue(periodic.isDone()); |
| } |
| } |
| assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isTerminated()); |
| assertEquals(2 + (effectiveDelayedPolicy ? 1 : 0), ran.get()); |
| }} |
| |
| /** |
| * completed submit of callable returns result |
| */ |
| public void testSubmitCallable() throws Exception { |
| final ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 invokeAll(c) throws exception on failed task |
| */ |
| public void testInvokeAll4() throws Exception { |
| final ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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 ScheduledThreadPoolExecutor(2); |
| 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"); |
| } |
| } |
| } |
| } |
| |
| /** |
| * A fixed delay task with overflowing period should not prevent a |
| * one-shot task from executing. |
| * https://bugs.openjdk.java.net/browse/JDK-8051859 |
| */ |
| public void testScheduleWithFixedDelay_overflow() throws Exception { |
| final CountDownLatch delayedDone = new CountDownLatch(1); |
| final CountDownLatch immediateDone = new CountDownLatch(1); |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final Runnable immediate = new Runnable() { public void run() { |
| immediateDone.countDown(); |
| }}; |
| final Runnable delayed = new Runnable() { public void run() { |
| delayedDone.countDown(); |
| p.submit(immediate); |
| }}; |
| p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS); |
| await(delayedDone); |
| await(immediateDone); |
| } |
| } |
| |
| } |