| /* |
| * 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 java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.Callable; |
| 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.AtomicInteger; |
| |
| 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(...); |
| // } |
| |
| /** |
| * execute successfully executes a runnable |
| */ |
| public void testExecute() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| final Runnable task = new CheckedRunnable() { |
| public void realRun() { |
| done.countDown(); |
| }}; |
| try { |
| p.execute(task); |
| assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS)); |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * delayed schedule of callable successfully executes after delay |
| */ |
| public void testSchedule1() throws Exception { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final long startTime = System.nanoTime(); |
| final CountDownLatch done = new CountDownLatch(1); |
| try { |
| 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)); |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * delayed schedule of runnable successfully executes after delay |
| */ |
| public void testSchedule3() throws Exception { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final long startTime = System.nanoTime(); |
| final CountDownLatch done = new CountDownLatch(1); |
| try { |
| 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()); |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * scheduleAtFixedRate executes runnable after given initial delay |
| */ |
| public void testSchedule4() throws Exception { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final long startTime = System.nanoTime(); |
| final CountDownLatch done = new CountDownLatch(1); |
| try { |
| 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); |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * scheduleWithFixedDelay executes runnable after given initial delay |
| */ |
| public void testSchedule5() throws Exception { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final long startTime = System.nanoTime(); |
| final CountDownLatch done = new CountDownLatch(1); |
| try { |
| 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); |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| static class RunnableCounter implements Runnable { |
| AtomicInteger count = new AtomicInteger(0); |
| public void run() { count.getAndIncrement(); } |
| } |
| |
| /** |
| * scheduleAtFixedRate executes series of tasks at given rate |
| */ |
| public void testFixedRateSequence() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try { |
| for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) { |
| long startTime = System.nanoTime(); |
| int cycles = 10; |
| final CountDownLatch done = new CountDownLatch(cycles); |
| Runnable task = new CheckedRunnable() { |
| public void realRun() { done.countDown(); }}; |
| ScheduledFuture h = |
| p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS); |
| done.await(); |
| h.cancel(true); |
| double normalizedTime = |
| (double) millisElapsedSince(startTime) / delay; |
| if (normalizedTime >= cycles - 1 && |
| normalizedTime <= cycles) |
| return; |
| } |
| throw new AssertionError("unexpected execution rate"); |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * scheduleWithFixedDelay executes series of tasks with given period |
| */ |
| public void testFixedDelaySequence() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try { |
| for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) { |
| long startTime = System.nanoTime(); |
| int cycles = 10; |
| final CountDownLatch done = new CountDownLatch(cycles); |
| Runnable task = new CheckedRunnable() { |
| public void realRun() { done.countDown(); }}; |
| ScheduledFuture h = |
| p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS); |
| done.await(); |
| h.cancel(true); |
| double normalizedTime = |
| (double) millisElapsedSince(startTime) / delay; |
| if (normalizedTime >= cycles - 1 && |
| normalizedTime <= cycles) |
| return; |
| } |
| throw new AssertionError("unexpected execution rate"); |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * execute(null) throws NPE |
| */ |
| public void testExecuteNull() throws InterruptedException { |
| ScheduledThreadPoolExecutor se = null; |
| try { |
| se = new ScheduledThreadPoolExecutor(1); |
| se.execute(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| |
| joinPool(se); |
| } |
| |
| /** |
| * schedule(null) throws NPE |
| */ |
| public void testScheduleNull() throws InterruptedException { |
| ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1); |
| try { |
| TrackedCallable callable = null; |
| Future f = se.schedule(callable, SHORT_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| joinPool(se); |
| } |
| |
| /** |
| * execute throws RejectedExecutionException if shutdown |
| */ |
| public void testSchedule1_RejectedExecutionException() throws InterruptedException { |
| ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1); |
| try { |
| se.shutdown(); |
| se.schedule(new NoOpRunnable(), |
| MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) { |
| } |
| |
| joinPool(se); |
| } |
| |
| /** |
| * schedule throws RejectedExecutionException if shutdown |
| */ |
| public void testSchedule2_RejectedExecutionException() throws InterruptedException { |
| ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1); |
| try { |
| se.shutdown(); |
| se.schedule(new NoOpCallable(), |
| MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) { |
| } |
| joinPool(se); |
| } |
| |
| /** |
| * schedule callable throws RejectedExecutionException if shutdown |
| */ |
| public void testSchedule3_RejectedExecutionException() throws InterruptedException { |
| ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1); |
| try { |
| se.shutdown(); |
| se.schedule(new NoOpCallable(), |
| MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) { |
| } |
| joinPool(se); |
| } |
| |
| /** |
| * scheduleAtFixedRate throws RejectedExecutionException if shutdown |
| */ |
| public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException { |
| ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1); |
| try { |
| se.shutdown(); |
| se.scheduleAtFixedRate(new NoOpRunnable(), |
| MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) { |
| } |
| joinPool(se); |
| } |
| |
| /** |
| * scheduleWithFixedDelay throws RejectedExecutionException if shutdown |
| */ |
| public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException { |
| ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1); |
| try { |
| se.shutdown(); |
| se.scheduleWithFixedDelay(new NoOpRunnable(), |
| MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (RejectedExecutionException success) { |
| } catch (SecurityException ok) { |
| } |
| joinPool(se); |
| } |
| |
| /** |
| * getActiveCount increases but doesn't overestimate, when a |
| * thread becomes active |
| */ |
| public void testGetActiveCount() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2); |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| try { |
| assertEquals(0, p.getActiveCount()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| assertEquals(1, p.getActiveCount()); |
| done.await(); |
| }}); |
| assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
| assertEquals(1, p.getActiveCount()); |
| } finally { |
| done.countDown(); |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * getCompletedTaskCount increases, but doesn't overestimate, |
| * when tasks complete |
| */ |
| public void testGetCompletedTaskCount() throws InterruptedException { |
| final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2); |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch threadProceed = new CountDownLatch(1); |
| final CountDownLatch threadDone = new CountDownLatch(1); |
| try { |
| 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(); |
| } |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * getCorePoolSize returns size given in constructor if not otherwise set |
| */ |
| public void testGetCorePoolSize() throws InterruptedException { |
| ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| assertEquals(1, p.getCorePoolSize()); |
| joinPool(p); |
| } |
| |
| /** |
| * 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 { |
| assertEquals(0, p.getLargestPoolSize()); |
| for (int i = 0; i < THREADS; i++) |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadsStarted.countDown(); |
| done.await(); |
| assertEquals(THREADS, p.getLargestPoolSize()); |
| }}); |
| assertTrue(threadsStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
| assertEquals(THREADS, p.getLargestPoolSize()); |
| } finally { |
| done.countDown(); |
| joinPool(p); |
| 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 { |
| assertEquals(0, p.getPoolSize()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| assertEquals(1, p.getPoolSize()); |
| done.await(); |
| }}); |
| assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
| assertEquals(1, p.getPoolSize()); |
| } finally { |
| done.countDown(); |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * getTaskCount increases, but doesn't overestimate, when tasks |
| * submitted |
| */ |
| public void testGetTaskCount() throws InterruptedException { |
| final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| final int TASKS = 5; |
| try { |
| assertEquals(0, p.getTaskCount()); |
| for (int i = 0; i < TASKS; i++) |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| done.await(); |
| }}); |
| assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
| assertEquals(TASKS, p.getTaskCount()); |
| } finally { |
| done.countDown(); |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * getThreadFactory returns factory in constructor if not set |
| */ |
| public void testGetThreadFactory() throws InterruptedException { |
| ThreadFactory tf = new SimpleThreadFactory(); |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1, tf); |
| assertSame(tf, p.getThreadFactory()); |
| joinPool(p); |
| } |
| |
| /** |
| * setThreadFactory sets the thread factory returned by getThreadFactory |
| */ |
| public void testSetThreadFactory() throws InterruptedException { |
| ThreadFactory tf = new SimpleThreadFactory(); |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| p.setThreadFactory(tf); |
| assertSame(tf, p.getThreadFactory()); |
| joinPool(p); |
| } |
| |
| /** |
| * setThreadFactory(null) throws NPE |
| */ |
| public void testSetThreadFactoryNull() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| try { |
| p.setThreadFactory(null); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * isShutdown is false before shutdown, true after |
| */ |
| public void testIsShutdown() { |
| |
| 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); |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| assertFalse(p.isTerminated()); |
| try { |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| assertFalse(p.isTerminated()); |
| threadStarted.countDown(); |
| done.await(); |
| }}); |
| assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
| assertFalse(p.isTerminating()); |
| done.countDown(); |
| } finally { |
| 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 { |
| assertFalse(p.isTerminating()); |
| p.execute(new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| assertFalse(p.isTerminating()); |
| threadStarted.countDown(); |
| done.await(); |
| }}); |
| assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
| assertFalse(p.isTerminating()); |
| done.countDown(); |
| } finally { |
| 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 { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| try { |
| ScheduledFuture[] tasks = new ScheduledFuture[5]; |
| for (int i = 0; i < tasks.length; i++) { |
| Runnable r = new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| done.await(); |
| }}; |
| tasks[i] = p.schedule(r, 1, MILLISECONDS); |
| } |
| assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
| BlockingQueue<Runnable> q = p.getQueue(); |
| assertTrue(q.contains(tasks[tasks.length - 1])); |
| assertFalse(q.contains(tasks[0])); |
| } finally { |
| done.countDown(); |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * remove(task) removes queued task, and fails to remove active task |
| */ |
| public void testRemove() throws InterruptedException { |
| final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| ScheduledFuture[] tasks = new ScheduledFuture[5]; |
| final CountDownLatch threadStarted = new CountDownLatch(1); |
| final CountDownLatch done = new CountDownLatch(1); |
| try { |
| for (int i = 0; i < tasks.length; i++) { |
| Runnable r = new CheckedRunnable() { |
| public void realRun() throws InterruptedException { |
| threadStarted.countDown(); |
| done.await(); |
| }}; |
| tasks[i] = p.schedule(r, 1, MILLISECONDS); |
| } |
| assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
| 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])); |
| } finally { |
| done.countDown(); |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * purge eventually removes cancelled tasks from the queue |
| */ |
| public void testPurge() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| ScheduledFuture[] tasks = new ScheduledFuture[5]; |
| for (int i = 0; i < tasks.length; i++) |
| tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(), |
| LONG_DELAY_MS, MILLISECONDS); |
| try { |
| 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) < MEDIUM_DELAY_MS); |
| fail("Purge failed to remove cancelled tasks"); |
| } finally { |
| for (ScheduledFuture task : tasks) |
| task.cancel(true); |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * shutdownNow returns a list containing tasks that were not run |
| */ |
| public void testShutdownNow() { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| for (int i = 0; i < 5; i++) |
| p.schedule(new SmallPossiblyInterruptedRunnable(), |
| LONG_DELAY_MS, MILLISECONDS); |
| try { |
| List<Runnable> l = p.shutdownNow(); |
| assertTrue(p.isShutdown()); |
| assertEquals(5, l.size()); |
| } catch (SecurityException ok) { |
| // Allowed in case test doesn't have privs |
| } finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * In default setting, shutdown cancels periodic but not delayed |
| * tasks at shutdown |
| */ |
| public void testShutdown1() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy()); |
| assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy()); |
| |
| ScheduledFuture[] tasks = new ScheduledFuture[5]; |
| for (int i = 0; i < tasks.length; i++) |
| tasks[i] = p.schedule(new NoOpRunnable(), |
| SHORT_DELAY_MS, MILLISECONDS); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| BlockingQueue<Runnable> q = p.getQueue(); |
| for (ScheduledFuture task : tasks) { |
| assertFalse(task.isDone()); |
| assertFalse(task.isCancelled()); |
| assertTrue(q.contains(task)); |
| } |
| assertTrue(p.isShutdown()); |
| assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isTerminated()); |
| for (ScheduledFuture task : tasks) { |
| assertTrue(task.isDone()); |
| assertFalse(task.isCancelled()); |
| } |
| } |
| |
| /** |
| * If setExecuteExistingDelayedTasksAfterShutdownPolicy is false, |
| * delayed tasks are cancelled at shutdown |
| */ |
| public void testShutdown2() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| p.setExecuteExistingDelayedTasksAfterShutdownPolicy(false); |
| assertFalse(p.getExecuteExistingDelayedTasksAfterShutdownPolicy()); |
| assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy()); |
| ScheduledFuture[] tasks = new ScheduledFuture[5]; |
| for (int i = 0; i < tasks.length; i++) |
| tasks[i] = p.schedule(new NoOpRunnable(), |
| SHORT_DELAY_MS, MILLISECONDS); |
| BlockingQueue q = p.getQueue(); |
| assertEquals(tasks.length, q.size()); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| assertTrue(p.isShutdown()); |
| assertTrue(q.isEmpty()); |
| assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isTerminated()); |
| for (ScheduledFuture task : tasks) { |
| assertTrue(task.isDone()); |
| assertTrue(task.isCancelled()); |
| } |
| } |
| |
| /** |
| * If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false, |
| * periodic tasks are cancelled at shutdown |
| */ |
| public void testShutdown3() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy()); |
| assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy()); |
| p.setContinueExistingPeriodicTasksAfterShutdownPolicy(false); |
| assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy()); |
| assertFalse(p.getContinueExistingPeriodicTasksAfterShutdownPolicy()); |
| long initialDelay = LONG_DELAY_MS; |
| ScheduledFuture task = |
| p.scheduleAtFixedRate(new NoOpRunnable(), initialDelay, |
| 5, MILLISECONDS); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| assertTrue(p.isShutdown()); |
| assertTrue(p.getQueue().isEmpty()); |
| assertTrue(task.isDone()); |
| assertTrue(task.isCancelled()); |
| joinPool(p); |
| } |
| |
| /** |
| * if setContinueExistingPeriodicTasksAfterShutdownPolicy is true, |
| * periodic tasks are not cancelled at shutdown |
| */ |
| public void testShutdown4() throws InterruptedException { |
| ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1); |
| final CountDownLatch counter = new CountDownLatch(2); |
| try { |
| p.setContinueExistingPeriodicTasksAfterShutdownPolicy(true); |
| assertTrue(p.getExecuteExistingDelayedTasksAfterShutdownPolicy()); |
| assertTrue(p.getContinueExistingPeriodicTasksAfterShutdownPolicy()); |
| final Runnable r = new CheckedRunnable() { |
| public void realRun() { |
| counter.countDown(); |
| }}; |
| ScheduledFuture task = |
| p.scheduleAtFixedRate(r, 1, 1, MILLISECONDS); |
| assertFalse(task.isDone()); |
| assertFalse(task.isCancelled()); |
| try { p.shutdown(); } catch (SecurityException ok) { return; } |
| assertFalse(task.isCancelled()); |
| assertFalse(p.isTerminated()); |
| assertTrue(p.isShutdown()); |
| assertTrue(counter.await(SMALL_DELAY_MS, MILLISECONDS)); |
| assertFalse(task.isCancelled()); |
| assertTrue(task.cancel(false)); |
| assertTrue(task.isDone()); |
| assertTrue(task.isCancelled()); |
| assertTrue(p.awaitTermination(SMALL_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isTerminated()); |
| } |
| finally { |
| joinPool(p); |
| } |
| } |
| |
| /** |
| * completed submit of callable returns result |
| */ |
| public void testSubmitCallable() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| Future<String> future = e.submit(new StringTask()); |
| String result = future.get(); |
| assertSame(TEST_STRING, result); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * completed submit of runnable returns successfully |
| */ |
| public void testSubmitRunnable() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| Future<?> future = e.submit(new NoOpRunnable()); |
| future.get(); |
| assertTrue(future.isDone()); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * completed submit of (runnable, result) returns result |
| */ |
| public void testSubmitRunnable2() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
| String result = future.get(); |
| assertSame(TEST_STRING, result); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAny(null) throws NPE |
| */ |
| public void testInvokeAny1() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| e.invokeAny(null); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAny(empty collection) throws IAE |
| */ |
| public void testInvokeAny2() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| e.invokeAny(new ArrayList<Callable<String>>()); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAny(c) throws NPE if c has null elements |
| */ |
| public void testInvokeAny3() throws Exception { |
| CountDownLatch latch = new CountDownLatch(1); |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(latchAwaitingStringTask(latch)); |
| l.add(null); |
| try { |
| e.invokeAny(l); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| latch.countDown(); |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAny(c) throws ExecutionException if no task completes |
| */ |
| public void testInvokeAny4() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| 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); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAny(c) returns result of some task |
| */ |
| public void testInvokeAny5() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| 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); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAll(null) throws NPE |
| */ |
| public void testInvokeAll1() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| e.invokeAll(null); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAll(empty collection) returns empty collection |
| */ |
| public void testInvokeAll2() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>()); |
| assertTrue(r.isEmpty()); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAll(c) throws NPE if c has null elements |
| */ |
| public void testInvokeAll3() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(null); |
| try { |
| e.invokeAll(l); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * get of invokeAll(c) throws exception on failed task |
| */ |
| public void testInvokeAll4() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| 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); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * invokeAll(c) returns results of all completed tasks |
| */ |
| public void testInvokeAll5() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| 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()); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAny(null) throws NPE |
| */ |
| public void testTimedInvokeAny1() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAny(,,null) throws NPE |
| */ |
| public void testTimedInvokeAnyNullTimeUnit() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| try { |
| e.invokeAny(l, MEDIUM_DELAY_MS, null); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAny(empty collection) throws IAE |
| */ |
| public void testTimedInvokeAny2() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (IllegalArgumentException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAny(c) throws NPE if c has null elements |
| */ |
| public void testTimedInvokeAny3() throws Exception { |
| CountDownLatch latch = new CountDownLatch(1); |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| 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) { |
| } finally { |
| latch.countDown(); |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAny(c) throws ExecutionException if no task completes |
| */ |
| public void testTimedInvokeAny4() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new NPETask()); |
| try { |
| e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| assertTrue(success.getCause() instanceof NullPointerException); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAny(c) returns result of some task |
| */ |
| public void testTimedInvokeAny5() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(new StringTask()); |
| String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
| assertSame(TEST_STRING, result); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAll(null) throws NPE |
| */ |
| public void testTimedInvokeAll1() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAll(,,null) throws NPE |
| */ |
| public void testTimedInvokeAllNullTimeUnit() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| try { |
| e.invokeAll(l, MEDIUM_DELAY_MS, null); |
| shouldThrow(); |
| } catch (NullPointerException success) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAll(empty collection) returns empty collection |
| */ |
| public void testTimedInvokeAll2() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS); |
| assertTrue(r.isEmpty()); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAll(c) throws NPE if c has null elements |
| */ |
| public void testTimedInvokeAll3() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| 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) { |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * get of element of invokeAll(c) throws exception on failed task |
| */ |
| public void testTimedInvokeAll4() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new NPETask()); |
| List<Future<String>> futures = |
| e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
| assertEquals(1, futures.size()); |
| try { |
| futures.get(0).get(); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| assertTrue(success.getCause() instanceof NullPointerException); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAll(c) returns results of all completed tasks |
| */ |
| public void testTimedInvokeAll5() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(new StringTask()); |
| List<Future<String>> futures = |
| e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
| assertEquals(2, futures.size()); |
| for (Future<String> future : futures) |
| assertSame(TEST_STRING, future.get()); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| /** |
| * timed invokeAll(c) cancels tasks not completed by timeout |
| */ |
| public void testTimedInvokeAll6() throws Exception { |
| ExecutorService e = new ScheduledThreadPoolExecutor(2); |
| try { |
| List<Callable<String>> l = new ArrayList<Callable<String>>(); |
| l.add(new StringTask()); |
| l.add(Executors.callable(new MediumPossiblyInterruptedRunnable(), TEST_STRING)); |
| l.add(new StringTask()); |
| List<Future<String>> futures = |
| e.invokeAll(l, SHORT_DELAY_MS, MILLISECONDS); |
| assertEquals(l.size(), futures.size()); |
| for (Future future : futures) |
| assertTrue(future.isDone()); |
| assertFalse(futures.get(0).isCancelled()); |
| assertTrue(futures.get(1).isCancelled()); |
| } finally { |
| joinPool(e); |
| } |
| } |
| |
| } |
