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Diffstat (limited to 'jsr166-tests/src/test/java/jsr166/ThreadPoolExecutorTest.java')
| -rw-r--r-- | jsr166-tests/src/test/java/jsr166/ThreadPoolExecutorTest.java | 2010 |
1 files changed, 2010 insertions, 0 deletions
diff --git a/jsr166-tests/src/test/java/jsr166/ThreadPoolExecutorTest.java b/jsr166-tests/src/test/java/jsr166/ThreadPoolExecutorTest.java new file mode 100644 index 0000000..55f769b --- /dev/null +++ b/jsr166-tests/src/test/java/jsr166/ThreadPoolExecutorTest.java @@ -0,0 +1,2010 @@ +/* + * 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 junit.framework.*; +import java.util.concurrent.*; +import static java.util.concurrent.TimeUnit.MILLISECONDS; +import static java.util.concurrent.TimeUnit.NANOSECONDS; +import java.util.*; + +public class ThreadPoolExecutorTest extends JSR166TestCase { + + static class ExtendedTPE extends ThreadPoolExecutor { + final CountDownLatch beforeCalled = new CountDownLatch(1); + final CountDownLatch afterCalled = new CountDownLatch(1); + final CountDownLatch terminatedCalled = new CountDownLatch(1); + + public ExtendedTPE() { + 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 ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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); + } + } + + /** + * getActiveCount increases but doesn't overestimate, when a + * thread becomes active + */ + public void testGetActiveCount() throws InterruptedException { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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); + } + } + + /** + * prestartCoreThread starts a thread if under corePoolSize, else doesn't + */ + public void testPrestartCoreThread() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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()); + joinPool(p); + } + + /** + * prestartAllCoreThreads starts all corePoolSize threads + */ + public void testPrestartAllCoreThreads() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + assertEquals(0, p.getPoolSize()); + p.prestartAllCoreThreads(); + assertEquals(2, p.getPoolSize()); + p.prestartAllCoreThreads(); + assertEquals(2, p.getPoolSize()); + joinPool(p); + } + + /** + * getCompletedTaskCount increases, but doesn't overestimate, + * when tasks complete + */ + public void testGetCompletedTaskCount() throws InterruptedException { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + assertEquals(1, p.getCorePoolSize()); + joinPool(p); + } + + /** + * getKeepAliveTime returns value given in constructor if not otherwise set + */ + public void testGetKeepAliveTime() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 2, + 1000, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + assertEquals(1, p.getKeepAliveTime(TimeUnit.SECONDS)); + joinPool(p); + } + + /** + * getThreadFactory returns factory in constructor if not set + */ + public void testGetThreadFactory() { + ThreadFactory tf = new SimpleThreadFactory(); + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + tf, + new NoOpREHandler()); + assertSame(tf, p.getThreadFactory()); + joinPool(p); + } + + /** + * setThreadFactory sets the thread factory returned by getThreadFactory + */ + public void testSetThreadFactory() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + ThreadFactory tf = new SimpleThreadFactory(); + p.setThreadFactory(tf); + assertSame(tf, p.getThreadFactory()); + joinPool(p); + } + + /** + * setThreadFactory(null) throws NPE + */ + public void testSetThreadFactoryNull() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + p.setThreadFactory(null); + shouldThrow(); + } catch (NullPointerException success) { + } finally { + joinPool(p); + } + } + + /** + * getRejectedExecutionHandler returns handler in constructor if not set + */ + public void testGetRejectedExecutionHandler() { + final RejectedExecutionHandler h = new NoOpREHandler(); + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + h); + assertSame(h, p.getRejectedExecutionHandler()); + joinPool(p); + } + + /** + * setRejectedExecutionHandler sets the handler returned by + * getRejectedExecutionHandler + */ + public void testSetRejectedExecutionHandler() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + RejectedExecutionHandler h = new NoOpREHandler(); + p.setRejectedExecutionHandler(h); + assertSame(h, p.getRejectedExecutionHandler()); + joinPool(p); + } + + /** + * setRejectedExecutionHandler(null) throws NPE + */ + public void testSetRejectedExecutionHandlerNull() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + p.setRejectedExecutionHandler(null); + shouldThrow(); + } catch (NullPointerException success) { + } finally { + 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 ThreadPoolExecutor(THREADS, THREADS, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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()); + } + } + + /** + * getMaximumPoolSize returns value given in constructor if not + * otherwise set + */ + public void testGetMaximumPoolSize() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 3, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + assertEquals(3, p.getMaximumPoolSize()); + joinPool(p); + } + + /** + * getPoolSize increases, but doesn't overestimate, when threads + * become active + */ + public void testGetPoolSize() throws InterruptedException { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + final CountDownLatch threadStarted = new CountDownLatch(1); + final CountDownLatch done = new CountDownLatch(1); + try { + assertEquals(0, p.getTaskCount()); + p.execute(new CheckedRunnable() { + public void realRun() throws InterruptedException { + threadStarted.countDown(); + assertEquals(1, p.getTaskCount()); + done.await(); + }}); + assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); + assertEquals(1, p.getTaskCount()); + } finally { + done.countDown(); + joinPool(p); + } + } + + /** + * isShutdown is false before shutdown, true after + */ + public void testIsShutdown() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + assertFalse(p.isShutdown()); + try { p.shutdown(); } catch (SecurityException ok) { return; } + assertTrue(p.isShutdown()); + joinPool(p); + } + + /** + * awaitTermination on a non-shutdown pool times out + */ + public void testAwaitTermination_timesOut() throws InterruptedException { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + assertFalse(p.isTerminated()); + assertFalse(p.awaitTermination(Long.MIN_VALUE, NANOSECONDS)); + assertFalse(p.awaitTermination(Long.MIN_VALUE, MILLISECONDS)); + assertFalse(p.awaitTermination(-1L, NANOSECONDS)); + assertFalse(p.awaitTermination(-1L, MILLISECONDS)); + assertFalse(p.awaitTermination(0L, NANOSECONDS)); + assertFalse(p.awaitTermination(0L, MILLISECONDS)); + long timeoutNanos = 999999L; + long startTime = System.nanoTime(); + assertFalse(p.awaitTermination(timeoutNanos, NANOSECONDS)); + assertTrue(System.nanoTime() - startTime >= timeoutNanos); + assertFalse(p.isTerminated()); + startTime = System.nanoTime(); + long timeoutMillis = timeoutMillis(); + assertFalse(p.awaitTermination(timeoutMillis, MILLISECONDS)); + assertTrue(millisElapsedSince(startTime) >= timeoutMillis); + assertFalse(p.isTerminated()); + p.shutdown(); + assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); + assertTrue(p.isTerminated()); + } + + /** + * isTerminated is false before termination, true after + */ + public void testIsTerminated() throws InterruptedException { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 { + final BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10); + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + q); + final CountDownLatch threadStarted = new CountDownLatch(1); + final CountDownLatch done = new CountDownLatch(1); + try { + 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()); + done.await(); + return Boolean.TRUE; + }}; + tasks[i] = new FutureTask(task); + p.execute(tasks[i]); + } + assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); + assertSame(q, p.getQueue()); + assertFalse(q.contains(tasks[0])); + assertTrue(q.contains(tasks[tasks.length - 1])); + assertEquals(tasks.length - 1, q.size()); + } finally { + done.countDown(); + joinPool(p); + } + } + + /** + * remove(task) removes queued task, and fails to remove active task + */ + public void testRemove() throws InterruptedException { + BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10); + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + q); + Runnable[] tasks = new Runnable[5]; + final CountDownLatch threadStarted = new CountDownLatch(1); + final CountDownLatch done = new CountDownLatch(1); + try { + for (int i = 0; i < tasks.length; i++) { + tasks[i] = new CheckedRunnable() { + public void realRun() throws InterruptedException { + threadStarted.countDown(); + done.await(); + }}; + p.execute(tasks[i]); + } + assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); + 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])); + } finally { + done.countDown(); + joinPool(p); + } + } + + /** + * 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 ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + q); + FutureTask[] tasks = new FutureTask[5]; + try { + for (int i = 0; i < tasks.length; i++) { + Callable task = new CheckedCallable<Boolean>() { + public Boolean realCall() throws InterruptedException { + threadStarted.countDown(); + done.await(); + return Boolean.TRUE; + }}; + tasks[i] = new FutureTask(task); + p.execute(tasks[i]); + } + assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); + 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()); + } finally { + done.countDown(); + joinPool(p); + } + } + + /** + * shutdownNow returns a list containing tasks that were not run + */ + public void testShutdownNow() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + List l; + try { + for (int i = 0; i < 5; i++) + p.execute(new MediumPossiblyInterruptedRunnable()); + } + finally { + try { + l = p.shutdownNow(); + } catch (SecurityException ok) { return; } + } + assertTrue(p.isShutdown()); + assertTrue(l.size() <= 4); + } + + // Exception Tests + + /** + * Constructor throws if corePoolSize argument is less than zero + */ + public void testConstructor1() { + try { + new ThreadPoolExecutor(-1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if maximumPoolSize is less than zero + */ + public void testConstructor2() { + try { + new ThreadPoolExecutor(1, -1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if maximumPoolSize is equal to zero + */ + public void testConstructor3() { + try { + new ThreadPoolExecutor(1, 0, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if keepAliveTime is less than zero + */ + public void testConstructor4() { + try { + new ThreadPoolExecutor(1, 2, + -1L, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if corePoolSize is greater than the maximumPoolSize + */ + public void testConstructor5() { + try { + new ThreadPoolExecutor(2, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if workQueue is set to null + */ + public void testConstructorNullPointerException() { + try { + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + (BlockingQueue) null); + shouldThrow(); + } catch (NullPointerException success) {} + } + + /** + * Constructor throws if corePoolSize argument is less than zero + */ + public void testConstructor6() { + try { + new ThreadPoolExecutor(-1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new SimpleThreadFactory()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if maximumPoolSize is less than zero + */ + public void testConstructor7() { + try { + new ThreadPoolExecutor(1, -1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new SimpleThreadFactory()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if maximumPoolSize is equal to zero + */ + public void testConstructor8() { + try { + new ThreadPoolExecutor(1, 0, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new SimpleThreadFactory()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if keepAliveTime is less than zero + */ + public void testConstructor9() { + try { + new ThreadPoolExecutor(1, 2, + -1L, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new SimpleThreadFactory()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if corePoolSize is greater than the maximumPoolSize + */ + public void testConstructor10() { + try { + new ThreadPoolExecutor(2, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new SimpleThreadFactory()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if workQueue is set to null + */ + public void testConstructorNullPointerException2() { + try { + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + (BlockingQueue) null, + new SimpleThreadFactory()); + shouldThrow(); + } catch (NullPointerException success) {} + } + + /** + * Constructor throws if threadFactory is set to null + */ + public void testConstructorNullPointerException3() { + try { + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + (ThreadFactory) null); + shouldThrow(); + } catch (NullPointerException success) {} + } + + /** + * Constructor throws if corePoolSize argument is less than zero + */ + public void testConstructor11() { + try { + new ThreadPoolExecutor(-1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new NoOpREHandler()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if maximumPoolSize is less than zero + */ + public void testConstructor12() { + try { + new ThreadPoolExecutor(1, -1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new NoOpREHandler()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if maximumPoolSize is equal to zero + */ + public void testConstructor13() { + try { + new ThreadPoolExecutor(1, 0, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new NoOpREHandler()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if keepAliveTime is less than zero + */ + public void testConstructor14() { + try { + new ThreadPoolExecutor(1, 2, + -1L, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new NoOpREHandler()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if corePoolSize is greater than the maximumPoolSize + */ + public void testConstructor15() { + try { + new ThreadPoolExecutor(2, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new NoOpREHandler()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if workQueue is set to null + */ + public void testConstructorNullPointerException4() { + try { + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + (BlockingQueue) null, + new NoOpREHandler()); + shouldThrow(); + } catch (NullPointerException success) {} + } + + /** + * Constructor throws if handler is set to null + */ + public void testConstructorNullPointerException5() { + try { + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + (RejectedExecutionHandler) null); + shouldThrow(); + } catch (NullPointerException success) {} + } + + /** + * Constructor throws if corePoolSize argument is less than zero + */ + public void testConstructor16() { + try { + new ThreadPoolExecutor(-1, 1, + LONG_DELAY_MS, MILLISECONDS, + 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 ThreadPoolExecutor(1, -1, + LONG_DELAY_MS, MILLISECONDS, + 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 ThreadPoolExecutor(1, 0, + LONG_DELAY_MS, MILLISECONDS, + 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 ThreadPoolExecutor(1, 2, + -1L, MILLISECONDS, + 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 ThreadPoolExecutor(2, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new SimpleThreadFactory(), + new NoOpREHandler()); + shouldThrow(); + } catch (IllegalArgumentException success) {} + } + + /** + * Constructor throws if workQueue is null + */ + public void testConstructorNullPointerException6() { + try { + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + (BlockingQueue) null, + new SimpleThreadFactory(), + new NoOpREHandler()); + shouldThrow(); + } catch (NullPointerException success) {} + } + + /** + * Constructor throws if handler is null + */ + public void testConstructorNullPointerException7() { + try { + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + new SimpleThreadFactory(), + (RejectedExecutionHandler) null); + shouldThrow(); + } catch (NullPointerException success) {} + } + + /** + * Constructor throws if ThreadFactory is null + */ + public void testConstructorNullPointerException8() { + try { + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10), + (ThreadFactory) null, + new NoOpREHandler()); + shouldThrow(); + } catch (NullPointerException success) {} + } + + /** + * get of submitted callable throws InterruptedException if interrupted + */ + public void testInterruptedSubmit() throws InterruptedException { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + 60, TimeUnit.SECONDS, + new ArrayBlockingQueue<Runnable>(10)); + + final CountDownLatch threadStarted = new CountDownLatch(1); + final CountDownLatch done = new CountDownLatch(1); + try { + Thread t = newStartedThread(new CheckedInterruptedRunnable() { + public void realRun() throws Exception { + Callable task = new CheckedCallable<Boolean>() { + public Boolean realCall() throws InterruptedException { + threadStarted.countDown(); + done.await(); + return Boolean.TRUE; + }}; + p.submit(task).get(); + }}); + + assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); + t.interrupt(); + awaitTermination(t, MEDIUM_DELAY_MS); + } finally { + done.countDown(); + joinPool(p); + } + } + + /** + * execute throws RejectedExecutionException if saturated. + */ + public void testSaturatedExecute() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1)); + final CountDownLatch done = new CountDownLatch(1); + try { + Runnable task = new CheckedRunnable() { + public void realRun() throws InterruptedException { + done.await(); + }}; + 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); + } + } finally { + done.countDown(); + joinPool(p); + } + } + + /** + * submit(runnable) throws RejectedExecutionException if saturated. + */ + public void testSaturatedSubmitRunnable() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1)); + final CountDownLatch done = new CountDownLatch(1); + try { + Runnable task = new CheckedRunnable() { + public void realRun() throws InterruptedException { + done.await(); + }}; + for (int i = 0; i < 2; ++i) + p.submit(task); + for (int i = 0; i < 2; ++i) { + try { + p.execute(task); + shouldThrow(); + } catch (RejectedExecutionException success) {} + assertTrue(p.getTaskCount() <= 2); + } + } finally { + done.countDown(); + joinPool(p); + } + } + + /** + * submit(callable) throws RejectedExecutionException if saturated. + */ + public void testSaturatedSubmitCallable() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1)); + final CountDownLatch done = new CountDownLatch(1); + try { + Runnable task = new CheckedRunnable() { + public void realRun() throws InterruptedException { + done.await(); + }}; + for (int i = 0; i < 2; ++i) + p.submit(Executors.callable(task)); + for (int i = 0; i < 2; ++i) { + try { + p.execute(task); + shouldThrow(); + } catch (RejectedExecutionException success) {} + assertTrue(p.getTaskCount() <= 2); + } + } finally { + done.countDown(); + joinPool(p); + } + } + + /** + * executor using CallerRunsPolicy runs task if saturated. + */ + public void testSaturatedExecute2() { + RejectedExecutionHandler h = new ThreadPoolExecutor.CallerRunsPolicy(); + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, + MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1), + h); + try { + TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5]; + for (int i = 0; i < tasks.length; ++i) + tasks[i] = new TrackedNoOpRunnable(); + TrackedLongRunnable mr = new TrackedLongRunnable(); + p.execute(mr); + for (int i = 0; i < tasks.length; ++i) + p.execute(tasks[i]); + for (int i = 1; i < tasks.length; ++i) + assertTrue(tasks[i].done); + try { p.shutdownNow(); } catch (SecurityException ok) { return; } + } finally { + joinPool(p); + } + } + + /** + * executor using DiscardPolicy drops task if saturated. + */ + public void testSaturatedExecute3() { + RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardPolicy(); + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1), + h); + try { + TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5]; + for (int i = 0; i < tasks.length; ++i) + tasks[i] = new TrackedNoOpRunnable(); + p.execute(new TrackedLongRunnable()); + for (TrackedNoOpRunnable task : tasks) + p.execute(task); + for (TrackedNoOpRunnable task : tasks) + assertFalse(task.done); + try { p.shutdownNow(); } catch (SecurityException ok) { return; } + } finally { + joinPool(p); + } + } + + /** + * executor using DiscardOldestPolicy drops oldest task if saturated. + */ + public void testSaturatedExecute4() { + RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardOldestPolicy(); + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1), + h); + try { + p.execute(new TrackedLongRunnable()); + TrackedLongRunnable r2 = new TrackedLongRunnable(); + p.execute(r2); + assertTrue(p.getQueue().contains(r2)); + TrackedNoOpRunnable r3 = new TrackedNoOpRunnable(); + p.execute(r3); + assertFalse(p.getQueue().contains(r2)); + assertTrue(p.getQueue().contains(r3)); + try { p.shutdownNow(); } catch (SecurityException ok) { return; } + } finally { + joinPool(p); + } + } + + /** + * execute throws RejectedExecutionException if shutdown + */ + public void testRejectedExecutionExceptionOnShutdown() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1)); + try { p.shutdown(); } catch (SecurityException ok) { return; } + try { + p.execute(new NoOpRunnable()); + shouldThrow(); + } catch (RejectedExecutionException success) {} + + joinPool(p); + } + + /** + * execute using CallerRunsPolicy drops task on shutdown + */ + public void testCallerRunsOnShutdown() { + RejectedExecutionHandler h = new ThreadPoolExecutor.CallerRunsPolicy(); + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1), h); + + try { p.shutdown(); } catch (SecurityException ok) { return; } + try { + TrackedNoOpRunnable r = new TrackedNoOpRunnable(); + p.execute(r); + assertFalse(r.done); + } finally { + joinPool(p); + } + } + + /** + * execute using DiscardPolicy drops task on shutdown + */ + public void testDiscardOnShutdown() { + RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardPolicy(); + ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1), + h); + + try { p.shutdown(); } catch (SecurityException ok) { return; } + try { + TrackedNoOpRunnable r = new TrackedNoOpRunnable(); + p.execute(r); + assertFalse(r.done); + } finally { + joinPool(p); + } + } + + /** + * execute using DiscardOldestPolicy drops task on shutdown + */ + public void testDiscardOldestOnShutdown() { + RejectedExecutionHandler h = new ThreadPoolExecutor.DiscardOldestPolicy(); + ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 1, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(1), + h); + + try { p.shutdown(); } catch (SecurityException ok) { return; } + try { + TrackedNoOpRunnable r = new TrackedNoOpRunnable(); + p.execute(r); + assertFalse(r.done); + } finally { + joinPool(p); + } + } + + /** + * execute(null) throws NPE + */ + public void testExecuteNull() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + p.execute(null); + shouldThrow(); + } catch (NullPointerException success) {} + + joinPool(p); + } + + /** + * setCorePoolSize of negative value throws IllegalArgumentException + */ + public void testCorePoolSizeIllegalArgumentException() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + p.setCorePoolSize(-1); + shouldThrow(); + } catch (IllegalArgumentException success) { + } finally { + try { p.shutdown(); } catch (SecurityException ok) { return; } + } + joinPool(p); + } + + /** + * setMaximumPoolSize(int) throws IllegalArgumentException if + * given a value less the core pool size + */ + public void testMaximumPoolSizeIllegalArgumentException() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 3, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + p.setMaximumPoolSize(1); + shouldThrow(); + } catch (IllegalArgumentException success) { + } finally { + try { p.shutdown(); } catch (SecurityException ok) { return; } + } + joinPool(p); + } + + /** + * setMaximumPoolSize throws IllegalArgumentException + * if given a negative value + */ + public void testMaximumPoolSizeIllegalArgumentException2() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 3, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + p.setMaximumPoolSize(-1); + shouldThrow(); + } catch (IllegalArgumentException success) { + } finally { + try { p.shutdown(); } catch (SecurityException ok) { return; } + } + joinPool(p); + } + + /** + * setKeepAliveTime throws IllegalArgumentException + * when given a negative value + */ + public void testKeepAliveTimeIllegalArgumentException() { + ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 3, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + p.setKeepAliveTime(-1,MILLISECONDS); + shouldThrow(); + } catch (IllegalArgumentException success) { + } finally { + try { p.shutdown(); } catch (SecurityException ok) { return; } + } + joinPool(p); + } + + /** + * terminated() is called on termination + */ + public void testTerminated() { + ExtendedTPE p = new ExtendedTPE(); + try { p.shutdown(); } catch (SecurityException ok) { return; } + assertTrue(p.terminatedCalled()); + joinPool(p); + } + + /** + * beforeExecute and afterExecute are called when executing task + */ + public void testBeforeAfter() throws InterruptedException { + ExtendedTPE p = new ExtendedTPE(); + try { + final CountDownLatch done = new CountDownLatch(1); + final CheckedRunnable task = new CheckedRunnable() { + public void realRun() { + done.countDown(); + }}; + p.execute(task); + await(p.afterCalled); + assertEquals(0, done.getCount()); + assertTrue(p.afterCalled()); + assertTrue(p.beforeCalled()); + try { p.shutdown(); } catch (SecurityException ok) { return; } + } finally { + joinPool(p); + } + } + + /** + * completed submit of callable returns result + */ + public void testSubmitCallable() throws Exception { + ExecutorService e = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + e.invokeAny(null); + shouldThrow(); + } catch (NullPointerException success) { + } finally { + joinPool(e); + } + } + + /** + * invokeAny(empty collection) throws IAE + */ + public void testInvokeAny2() throws Exception { + ExecutorService e = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 { + final CountDownLatch latch = new CountDownLatch(1); + final ExecutorService e = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + e.invokeAll(null); + shouldThrow(); + } catch (NullPointerException success) { + } finally { + joinPool(e); + } + } + + /** + * invokeAll(empty collection) returns empty collection + */ + public void testInvokeAll2() throws InterruptedException { + ExecutorService e = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 element of invokeAll(c) throws exception on failed task + */ + public void testInvokeAll4() throws Exception { + ExecutorService e = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + try { + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 { + final CountDownLatch latch = new CountDownLatch(1); + final ExecutorService e = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 InterruptedException { + ExecutorService e = + new ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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 ThreadPoolExecutor(2, 2, + LONG_DELAY_MS, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + 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); + } + } + + /** + * 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 ThreadPoolExecutor(100, 100, + LONG_DELAY_MS, MILLISECONDS, + new LinkedBlockingQueue<Runnable>(), + new FailingThreadFactory()); + try { + 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)); + } finally { + joinPool(e); + } + } + + /** + * allowsCoreThreadTimeOut is by default false. + */ + public void testAllowsCoreThreadTimeOut() { + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 2, + 1000, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + assertFalse(p.allowsCoreThreadTimeOut()); + joinPool(p); + } + + /** + * allowCoreThreadTimeOut(true) causes idle threads to time out + */ + public void testAllowCoreThreadTimeOut_true() throws Exception { + long coreThreadTimeOut = SHORT_DELAY_MS; + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 10, + coreThreadTimeOut, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + final CountDownLatch threadStarted = new CountDownLatch(1); + try { + p.allowCoreThreadTimeOut(true); + p.execute(new CheckedRunnable() { + public void realRun() { + threadStarted.countDown(); + assertEquals(1, p.getPoolSize()); + }}); + await(threadStarted); + delay(coreThreadTimeOut); + 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()); + } finally { + joinPool(p); + } + } + + /** + * allowCoreThreadTimeOut(false) causes idle threads not to time out + */ + public void testAllowCoreThreadTimeOut_false() throws Exception { + long coreThreadTimeOut = SHORT_DELAY_MS; + final ThreadPoolExecutor p = + new ThreadPoolExecutor(2, 10, + coreThreadTimeOut, MILLISECONDS, + new ArrayBlockingQueue<Runnable>(10)); + final CountDownLatch threadStarted = new CountDownLatch(1); + try { + p.allowCoreThreadTimeOut(false); + p.execute(new CheckedRunnable() { + public void realRun() throws InterruptedException { + threadStarted.countDown(); + assertTrue(p.getPoolSize() >= 1); + }}); + delay(2 * coreThreadTimeOut); + assertTrue(p.getPoolSize() >= 1); + } finally { + joinPool(p); + } + } + + /** + * execute allows the same task to be submitted multiple times, even + * if rejected + */ + public void testRejectedRecycledTask() throws InterruptedException { + final int nTasks = 1000; + final CountDownLatch done = new CountDownLatch(nTasks); + final Runnable recycledTask = new Runnable() { + public void run() { + done.countDown(); + }}; + final ThreadPoolExecutor p = + new ThreadPoolExecutor(1, 30, 60, TimeUnit.SECONDS, + new ArrayBlockingQueue(30)); + try { + for (int i = 0; i < nTasks; ++i) { + for (;;) { + try { + p.execute(recycledTask); + break; + } + catch (RejectedExecutionException ignore) {} + } + } + // enough time to run all tasks + assertTrue(done.await(nTasks * SHORT_DELAY_MS, MILLISECONDS)); + } finally { + joinPool(p); + } + } + +} |