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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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|
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import java.security.PrivilegedAction; |
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import java.security.PrivilegedExceptionAction; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.List; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.ForkJoinPool; |
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import java.util.concurrent.ForkJoinTask; |
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import java.util.concurrent.ForkJoinWorkerThread; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.RecursiveTask; |
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import java.util.concurrent.RejectedExecutionException; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.locks.ReentrantLock; |
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|
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import junit.framework.AssertionFailedError; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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public class ForkJoinPoolTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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main(suite(), args); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(ForkJoinPoolTest.class); |
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} |
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|
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/* |
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* Testing coverage notes: |
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* |
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* 1. shutdown and related methods are tested via super.joinPool. |
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* |
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* 2. newTaskFor and adapters are tested in submit/invoke tests |
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* |
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* 3. We cannot portably test monitoring methods such as |
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* getStealCount() since they rely ultimately on random task |
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* stealing that may cause tasks not to be stolen/propagated |
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* across threads, especially on uniprocessors. |
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* |
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* 4. There are no independently testable ForkJoinWorkerThread |
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* methods, but they are covered here and in task tests. |
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*/ |
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|
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// Some classes to test extension and factory methods |
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|
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static class MyHandler implements Thread.UncaughtExceptionHandler { |
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volatile int catches = 0; |
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public void uncaughtException(Thread t, Throwable e) { |
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++catches; |
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} |
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} |
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|
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// to test handlers |
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static class FailingFJWSubclass extends ForkJoinWorkerThread { |
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public FailingFJWSubclass(ForkJoinPool p) { super(p) ; } |
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protected void onStart() { super.onStart(); throw new Error(); } |
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} |
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|
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static class FailingThreadFactory |
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implements ForkJoinPool.ForkJoinWorkerThreadFactory { |
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volatile int calls = 0; |
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public ForkJoinWorkerThread newThread(ForkJoinPool p) { |
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if (++calls > 1) return null; |
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return new FailingFJWSubclass(p); |
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} |
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} |
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|
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static class SubFJP extends ForkJoinPool { // to expose protected |
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SubFJP() { super(1); } |
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public int drainTasksTo(Collection<? super ForkJoinTask<?>> c) { |
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return super.drainTasksTo(c); |
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} |
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public ForkJoinTask<?> pollSubmission() { |
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return super.pollSubmission(); |
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} |
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} |
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|
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static class ManagedLocker implements ForkJoinPool.ManagedBlocker { |
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final ReentrantLock lock; |
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boolean hasLock = false; |
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ManagedLocker(ReentrantLock lock) { this.lock = lock; } |
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public boolean block() { |
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if (!hasLock) |
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lock.lock(); |
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return true; |
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} |
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public boolean isReleasable() { |
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return hasLock || (hasLock = lock.tryLock()); |
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} |
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} |
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|
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// A simple recursive task for testing |
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static final class FibTask extends RecursiveTask<Integer> { |
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final int number; |
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FibTask(int n) { number = n; } |
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protected Integer compute() { |
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int n = number; |
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if (n <= 1) |
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return n; |
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FibTask f1 = new FibTask(n - 1); |
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f1.fork(); |
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return (new FibTask(n - 2)).compute() + f1.join(); |
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} |
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} |
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|
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// A failing task for testing |
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static final class FailingTask extends ForkJoinTask<Void> { |
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public final Void getRawResult() { return null; } |
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protected final void setRawResult(Void mustBeNull) { } |
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protected final boolean exec() { throw new Error(); } |
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FailingTask() {} |
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} |
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|
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// Fib needlessly using locking to test ManagedBlockers |
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static final class LockingFibTask extends RecursiveTask<Integer> { |
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final int number; |
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final ManagedLocker locker; |
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final ReentrantLock lock; |
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LockingFibTask(int n, ManagedLocker locker, ReentrantLock lock) { |
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number = n; |
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this.locker = locker; |
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this.lock = lock; |
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} |
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protected Integer compute() { |
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int n; |
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LockingFibTask f1 = null; |
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LockingFibTask f2 = null; |
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locker.block(); |
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n = number; |
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if (n > 1) { |
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f1 = new LockingFibTask(n - 1, locker, lock); |
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f2 = new LockingFibTask(n - 2, locker, lock); |
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} |
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lock.unlock(); |
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if (n <= 1) |
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return n; |
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else { |
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f1.fork(); |
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return f2.compute() + f1.join(); |
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} |
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} |
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} |
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|
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/** |
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* Successfully constructed pool reports default factory, |
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* parallelism and async mode policies, no active threads or |
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* tasks, and quiescent running state. |
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*/ |
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public void testDefaultInitialState() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getStealCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* Constructor throws if size argument is less than zero |
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*/ |
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public void testConstructor1() { |
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try { |
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new ForkJoinPool(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* Constructor throws if factory argument is null |
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*/ |
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public void testConstructor2() { |
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try { |
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new ForkJoinPool(1, null, null, false); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* getParallelism returns size set in constructor |
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*/ |
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public void testGetParallelism() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertEquals(1, p.getParallelism()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* getPoolSize returns number of started workers. |
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*/ |
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public void testGetPoolSize() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertEquals(0, p.getActiveThreadCount()); |
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Future<String> future = p.submit(new StringTask()); |
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assertEquals(1, p.getPoolSize()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* awaitTermination on a non-shutdown pool times out |
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*/ |
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public void testAwaitTermination_timesOut() throws InterruptedException { |
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ForkJoinPool p = new ForkJoinPool(1); |
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assertFalse(p.isTerminated()); |
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assertFalse(p.awaitTermination(Long.MIN_VALUE, NANOSECONDS)); |
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assertFalse(p.awaitTermination(Long.MIN_VALUE, MILLISECONDS)); |
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assertFalse(p.awaitTermination(-1L, NANOSECONDS)); |
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assertFalse(p.awaitTermination(-1L, MILLISECONDS)); |
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assertFalse(p.awaitTermination(0L, NANOSECONDS)); |
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assertFalse(p.awaitTermination(0L, MILLISECONDS)); |
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long timeoutNanos = 999999L; |
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long startTime = System.nanoTime(); |
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assertFalse(p.awaitTermination(timeoutNanos, NANOSECONDS)); |
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assertTrue(System.nanoTime() - startTime >= timeoutNanos); |
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assertFalse(p.isTerminated()); |
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startTime = System.nanoTime(); |
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long timeoutMillis = timeoutMillis(); |
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assertFalse(p.awaitTermination(timeoutMillis, MILLISECONDS)); |
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
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assertFalse(p.isTerminated()); |
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p.shutdown(); |
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assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
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assertTrue(p.isTerminated()); |
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} |
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|
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/** |
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* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
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* |
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* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
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* performs its defined action |
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*/ |
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public void testSetUncaughtExceptionHandler() throws InterruptedException { |
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final CountDownLatch uehInvoked = new CountDownLatch(1); |
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final Thread.UncaughtExceptionHandler eh = |
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new Thread.UncaughtExceptionHandler() { |
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public void uncaughtException(Thread t, Throwable e) { |
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uehInvoked.countDown(); |
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}}; |
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ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(), |
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eh, false); |
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try { |
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assertSame(eh, p.getUncaughtExceptionHandler()); |
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try { |
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p.execute(new FibTask(8)); |
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assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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} catch (RejectedExecutionException ok) { |
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} |
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} finally { |
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p.shutdownNow(); // failure might have prevented processing task |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* After invoking a single task, isQuiescent eventually becomes |
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* true, at which time queues are empty, threads are not active, |
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* the task has completed successfully, and construction |
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* parameters continue to hold |
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*/ |
289 |
public void testIsQuiescent() throws Exception { |
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ForkJoinPool p = new ForkJoinPool(2); |
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try { |
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assertTrue(p.isQuiescent()); |
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long startTime = System.nanoTime(); |
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FibTask f = new FibTask(20); |
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p.invoke(f); |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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while (! p.isQuiescent()) { |
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if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
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throw new AssertionFailedError("timed out"); |
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assertFalse(p.getAsyncMode()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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Thread.yield(); |
306 |
} |
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|
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
315 |
assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
317 |
assertTrue(f.isDone()); |
318 |
assertEquals(6765, (int) f.get()); |
319 |
} finally { |
320 |
joinPool(p); |
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} |
322 |
} |
323 |
|
324 |
/** |
325 |
* Completed submit(ForkJoinTask) returns result |
326 |
*/ |
327 |
public void testSubmitForkJoinTask() throws Throwable { |
328 |
ForkJoinPool p = new ForkJoinPool(1); |
329 |
try { |
330 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
331 |
assertEquals(21, (int) f.get()); |
332 |
} finally { |
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joinPool(p); |
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} |
335 |
} |
336 |
|
337 |
/** |
338 |
* A task submitted after shutdown is rejected |
339 |
*/ |
340 |
public void testSubmitAfterShutdown() { |
341 |
ForkJoinPool p = new ForkJoinPool(1); |
342 |
try { |
343 |
p.shutdown(); |
344 |
assertTrue(p.isShutdown()); |
345 |
try { |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
347 |
shouldThrow(); |
348 |
} catch (RejectedExecutionException success) {} |
349 |
} finally { |
350 |
joinPool(p); |
351 |
} |
352 |
} |
353 |
|
354 |
/** |
355 |
* Pool maintains parallelism when using ManagedBlocker |
356 |
*/ |
357 |
public void testBlockingForkJoinTask() throws Throwable { |
358 |
ForkJoinPool p = new ForkJoinPool(4); |
359 |
try { |
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ReentrantLock lock = new ReentrantLock(); |
361 |
ManagedLocker locker = new ManagedLocker(lock); |
362 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
363 |
p.execute(f); |
364 |
assertEquals(6765, (int) f.get()); |
365 |
} finally { |
366 |
p.shutdownNow(); // don't wait out shutdown |
367 |
} |
368 |
} |
369 |
|
370 |
/** |
371 |
* pollSubmission returns unexecuted submitted task, if present |
372 |
*/ |
373 |
public void testPollSubmission() { |
374 |
final CountDownLatch done = new CountDownLatch(1); |
375 |
SubFJP p = new SubFJP(); |
376 |
try { |
377 |
ForkJoinTask a = p.submit(awaiter(done)); |
378 |
ForkJoinTask b = p.submit(awaiter(done)); |
379 |
ForkJoinTask c = p.submit(awaiter(done)); |
380 |
ForkJoinTask r = p.pollSubmission(); |
381 |
assertTrue(r == a || r == b || r == c); |
382 |
assertFalse(r.isDone()); |
383 |
} finally { |
384 |
done.countDown(); |
385 |
joinPool(p); |
386 |
} |
387 |
} |
388 |
|
389 |
/** |
390 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
391 |
*/ |
392 |
public void testDrainTasksTo() { |
393 |
final CountDownLatch done = new CountDownLatch(1); |
394 |
SubFJP p = new SubFJP(); |
395 |
try { |
396 |
ForkJoinTask a = p.submit(awaiter(done)); |
397 |
ForkJoinTask b = p.submit(awaiter(done)); |
398 |
ForkJoinTask c = p.submit(awaiter(done)); |
399 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
400 |
p.drainTasksTo(al); |
401 |
assertTrue(al.size() > 0); |
402 |
for (ForkJoinTask r : al) { |
403 |
assertTrue(r == a || r == b || r == c); |
404 |
assertFalse(r.isDone()); |
405 |
} |
406 |
} finally { |
407 |
done.countDown(); |
408 |
joinPool(p); |
409 |
} |
410 |
} |
411 |
|
412 |
// FJ Versions of AbstractExecutorService tests |
413 |
|
414 |
/** |
415 |
* execute(runnable) runs it to completion |
416 |
*/ |
417 |
public void testExecuteRunnable() throws Throwable { |
418 |
ExecutorService e = new ForkJoinPool(1); |
419 |
try { |
420 |
final AtomicBoolean done = new AtomicBoolean(false); |
421 |
Future<?> future = e.submit(new CheckedRunnable() { |
422 |
public void realRun() { |
423 |
done.set(true); |
424 |
}}); |
425 |
assertNull(future.get()); |
426 |
assertNull(future.get(0, MILLISECONDS)); |
427 |
assertTrue(done.get()); |
428 |
assertTrue(future.isDone()); |
429 |
assertFalse(future.isCancelled()); |
430 |
} finally { |
431 |
joinPool(e); |
432 |
} |
433 |
} |
434 |
|
435 |
/** |
436 |
* Completed submit(callable) returns result |
437 |
*/ |
438 |
public void testSubmitCallable() throws Throwable { |
439 |
ExecutorService e = new ForkJoinPool(1); |
440 |
try { |
441 |
Future<String> future = e.submit(new StringTask()); |
442 |
assertSame(TEST_STRING, future.get()); |
443 |
assertTrue(future.isDone()); |
444 |
assertFalse(future.isCancelled()); |
445 |
} finally { |
446 |
joinPool(e); |
447 |
} |
448 |
} |
449 |
|
450 |
/** |
451 |
* Completed submit(runnable) returns successfully |
452 |
*/ |
453 |
public void testSubmitRunnable() throws Throwable { |
454 |
ExecutorService e = new ForkJoinPool(1); |
455 |
try { |
456 |
Future<?> future = e.submit(new NoOpRunnable()); |
457 |
assertNull(future.get()); |
458 |
assertTrue(future.isDone()); |
459 |
assertFalse(future.isCancelled()); |
460 |
} finally { |
461 |
joinPool(e); |
462 |
} |
463 |
} |
464 |
|
465 |
/** |
466 |
* Completed submit(runnable, result) returns result |
467 |
*/ |
468 |
public void testSubmitRunnable2() throws Throwable { |
469 |
ExecutorService e = new ForkJoinPool(1); |
470 |
try { |
471 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
472 |
assertSame(TEST_STRING, future.get()); |
473 |
assertTrue(future.isDone()); |
474 |
assertFalse(future.isCancelled()); |
475 |
} finally { |
476 |
joinPool(e); |
477 |
} |
478 |
} |
479 |
|
480 |
/** |
481 |
* A submitted privileged action runs to completion |
482 |
*/ |
483 |
public void testSubmitPrivilegedAction() throws Exception { |
484 |
final Callable callable = Executors.callable(new PrivilegedAction() { |
485 |
public Object run() { return TEST_STRING; }}); |
486 |
Runnable r = new CheckedRunnable() { |
487 |
public void realRun() throws Exception { |
488 |
ExecutorService e = new ForkJoinPool(1); |
489 |
try { |
490 |
Future future = e.submit(callable); |
491 |
assertSame(TEST_STRING, future.get()); |
492 |
} finally { |
493 |
joinPool(e); |
494 |
} |
495 |
}}; |
496 |
|
497 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
498 |
} |
499 |
|
500 |
/** |
501 |
* A submitted privileged exception action runs to completion |
502 |
*/ |
503 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
504 |
final Callable callable = |
505 |
Executors.callable(new PrivilegedExceptionAction() { |
506 |
public Object run() { return TEST_STRING; }}); |
507 |
Runnable r = new CheckedRunnable() { |
508 |
public void realRun() throws Exception { |
509 |
ExecutorService e = new ForkJoinPool(1); |
510 |
try { |
511 |
Future future = e.submit(callable); |
512 |
assertSame(TEST_STRING, future.get()); |
513 |
} finally { |
514 |
joinPool(e); |
515 |
} |
516 |
}}; |
517 |
|
518 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
519 |
} |
520 |
|
521 |
/** |
522 |
* A submitted failed privileged exception action reports exception |
523 |
*/ |
524 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
525 |
final Callable callable = |
526 |
Executors.callable(new PrivilegedExceptionAction() { |
527 |
public Object run() { throw new IndexOutOfBoundsException(); }}); |
528 |
Runnable r = new CheckedRunnable() { |
529 |
public void realRun() throws Exception { |
530 |
ExecutorService e = new ForkJoinPool(1); |
531 |
try { |
532 |
Future future = e.submit(callable); |
533 |
try { |
534 |
future.get(); |
535 |
shouldThrow(); |
536 |
} catch (ExecutionException success) { |
537 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
538 |
} |
539 |
} finally { |
540 |
joinPool(e); |
541 |
} |
542 |
}}; |
543 |
|
544 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
545 |
} |
546 |
|
547 |
/** |
548 |
* execute(null runnable) throws NullPointerException |
549 |
*/ |
550 |
public void testExecuteNullRunnable() { |
551 |
ExecutorService e = new ForkJoinPool(1); |
552 |
try { |
553 |
Future<?> future = e.submit((Runnable) null); |
554 |
shouldThrow(); |
555 |
} catch (NullPointerException success) { |
556 |
} finally { |
557 |
joinPool(e); |
558 |
} |
559 |
} |
560 |
|
561 |
/** |
562 |
* submit(null callable) throws NullPointerException |
563 |
*/ |
564 |
public void testSubmitNullCallable() { |
565 |
ExecutorService e = new ForkJoinPool(1); |
566 |
try { |
567 |
Future<String> future = e.submit((Callable) null); |
568 |
shouldThrow(); |
569 |
} catch (NullPointerException success) { |
570 |
} finally { |
571 |
joinPool(e); |
572 |
} |
573 |
} |
574 |
|
575 |
/** |
576 |
* submit(callable).get() throws InterruptedException if interrupted |
577 |
*/ |
578 |
public void testInterruptedSubmit() throws InterruptedException { |
579 |
final CountDownLatch submitted = new CountDownLatch(1); |
580 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
581 |
final ExecutorService p = new ForkJoinPool(1); |
582 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
583 |
public Void realCall() throws InterruptedException { |
584 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
585 |
return null; |
586 |
}}; |
587 |
try { |
588 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
589 |
public void realRun() throws Exception { |
590 |
Future<Void> future = p.submit(awaiter); |
591 |
submitted.countDown(); |
592 |
future.get(); |
593 |
}}); |
594 |
t.start(); |
595 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
596 |
t.interrupt(); |
597 |
t.join(); |
598 |
} finally { |
599 |
quittingTime.countDown(); |
600 |
joinPool(p); |
601 |
} |
602 |
} |
603 |
|
604 |
/** |
605 |
* get of submit(callable) throws ExecutionException if callable |
606 |
* throws exception |
607 |
*/ |
608 |
public void testSubmitEE() throws Throwable { |
609 |
ForkJoinPool p = new ForkJoinPool(1); |
610 |
try { |
611 |
p.submit(new Callable() { |
612 |
public Object call() { throw new ArithmeticException(); }}) |
613 |
.get(); |
614 |
shouldThrow(); |
615 |
} catch (ExecutionException success) { |
616 |
assertTrue(success.getCause() instanceof ArithmeticException); |
617 |
} finally { |
618 |
joinPool(p); |
619 |
} |
620 |
} |
621 |
|
622 |
/** |
623 |
* invokeAny(null) throws NullPointerException |
624 |
*/ |
625 |
public void testInvokeAny1() throws Throwable { |
626 |
ExecutorService e = new ForkJoinPool(1); |
627 |
try { |
628 |
e.invokeAny(null); |
629 |
shouldThrow(); |
630 |
} catch (NullPointerException success) { |
631 |
} finally { |
632 |
joinPool(e); |
633 |
} |
634 |
} |
635 |
|
636 |
/** |
637 |
* invokeAny(empty collection) throws IllegalArgumentException |
638 |
*/ |
639 |
public void testInvokeAny2() throws Throwable { |
640 |
ExecutorService e = new ForkJoinPool(1); |
641 |
try { |
642 |
e.invokeAny(new ArrayList<Callable<String>>()); |
643 |
shouldThrow(); |
644 |
} catch (IllegalArgumentException success) { |
645 |
} finally { |
646 |
joinPool(e); |
647 |
} |
648 |
} |
649 |
|
650 |
/** |
651 |
* invokeAny(c) throws NullPointerException if c has a single null element |
652 |
*/ |
653 |
public void testInvokeAny3() throws Throwable { |
654 |
ExecutorService e = new ForkJoinPool(1); |
655 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
656 |
l.add(null); |
657 |
try { |
658 |
e.invokeAny(l); |
659 |
shouldThrow(); |
660 |
} catch (NullPointerException success) { |
661 |
} finally { |
662 |
joinPool(e); |
663 |
} |
664 |
} |
665 |
|
666 |
/** |
667 |
* invokeAny(c) throws NullPointerException if c has null elements |
668 |
*/ |
669 |
public void testInvokeAny4() throws Throwable { |
670 |
CountDownLatch latch = new CountDownLatch(1); |
671 |
ExecutorService e = new ForkJoinPool(1); |
672 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
673 |
l.add(latchAwaitingStringTask(latch)); |
674 |
l.add(null); |
675 |
try { |
676 |
e.invokeAny(l); |
677 |
shouldThrow(); |
678 |
} catch (NullPointerException success) { |
679 |
} finally { |
680 |
latch.countDown(); |
681 |
joinPool(e); |
682 |
} |
683 |
} |
684 |
|
685 |
/** |
686 |
* invokeAny(c) throws ExecutionException if no task in c completes |
687 |
*/ |
688 |
public void testInvokeAny5() throws Throwable { |
689 |
ExecutorService e = new ForkJoinPool(1); |
690 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
691 |
l.add(new NPETask()); |
692 |
try { |
693 |
e.invokeAny(l); |
694 |
shouldThrow(); |
695 |
} catch (ExecutionException success) { |
696 |
assertTrue(success.getCause() instanceof NullPointerException); |
697 |
} finally { |
698 |
joinPool(e); |
699 |
} |
700 |
} |
701 |
|
702 |
/** |
703 |
* invokeAny(c) returns result of some task in c if at least one completes |
704 |
*/ |
705 |
public void testInvokeAny6() throws Throwable { |
706 |
ExecutorService e = new ForkJoinPool(1); |
707 |
try { |
708 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
709 |
l.add(new StringTask()); |
710 |
l.add(new StringTask()); |
711 |
String result = e.invokeAny(l); |
712 |
assertSame(TEST_STRING, result); |
713 |
} finally { |
714 |
joinPool(e); |
715 |
} |
716 |
} |
717 |
|
718 |
/** |
719 |
* invokeAll(null) throws NullPointerException |
720 |
*/ |
721 |
public void testInvokeAll1() throws Throwable { |
722 |
ExecutorService e = new ForkJoinPool(1); |
723 |
try { |
724 |
e.invokeAll(null); |
725 |
shouldThrow(); |
726 |
} catch (NullPointerException success) { |
727 |
} finally { |
728 |
joinPool(e); |
729 |
} |
730 |
} |
731 |
|
732 |
/** |
733 |
* invokeAll(empty collection) returns empty collection |
734 |
*/ |
735 |
public void testInvokeAll2() throws InterruptedException { |
736 |
ExecutorService e = new ForkJoinPool(1); |
737 |
try { |
738 |
List<Future<String>> r |
739 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
740 |
assertTrue(r.isEmpty()); |
741 |
} finally { |
742 |
joinPool(e); |
743 |
} |
744 |
} |
745 |
|
746 |
/** |
747 |
* invokeAll(c) throws NullPointerException if c has null elements |
748 |
*/ |
749 |
public void testInvokeAll3() throws InterruptedException { |
750 |
ExecutorService e = new ForkJoinPool(1); |
751 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
752 |
l.add(new StringTask()); |
753 |
l.add(null); |
754 |
try { |
755 |
e.invokeAll(l); |
756 |
shouldThrow(); |
757 |
} catch (NullPointerException success) { |
758 |
} finally { |
759 |
joinPool(e); |
760 |
} |
761 |
} |
762 |
|
763 |
/** |
764 |
* get of returned element of invokeAll(c) throws |
765 |
* ExecutionException on failed task |
766 |
*/ |
767 |
public void testInvokeAll4() throws Throwable { |
768 |
ExecutorService e = new ForkJoinPool(1); |
769 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
770 |
l.add(new NPETask()); |
771 |
List<Future<String>> futures = e.invokeAll(l); |
772 |
assertEquals(1, futures.size()); |
773 |
try { |
774 |
futures.get(0).get(); |
775 |
shouldThrow(); |
776 |
} catch (ExecutionException success) { |
777 |
assertTrue(success.getCause() instanceof NullPointerException); |
778 |
} finally { |
779 |
joinPool(e); |
780 |
} |
781 |
} |
782 |
|
783 |
/** |
784 |
* invokeAll(c) returns results of all completed tasks in c |
785 |
*/ |
786 |
public void testInvokeAll5() throws Throwable { |
787 |
ExecutorService e = new ForkJoinPool(1); |
788 |
try { |
789 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
790 |
l.add(new StringTask()); |
791 |
l.add(new StringTask()); |
792 |
List<Future<String>> futures = e.invokeAll(l); |
793 |
assertEquals(2, futures.size()); |
794 |
for (Future<String> future : futures) |
795 |
assertSame(TEST_STRING, future.get()); |
796 |
} finally { |
797 |
joinPool(e); |
798 |
} |
799 |
} |
800 |
|
801 |
/** |
802 |
* timed invokeAny(null) throws NullPointerException |
803 |
*/ |
804 |
public void testTimedInvokeAny1() throws Throwable { |
805 |
ExecutorService e = new ForkJoinPool(1); |
806 |
try { |
807 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
808 |
shouldThrow(); |
809 |
} catch (NullPointerException success) { |
810 |
} finally { |
811 |
joinPool(e); |
812 |
} |
813 |
} |
814 |
|
815 |
/** |
816 |
* timed invokeAny(null time unit) throws NullPointerException |
817 |
*/ |
818 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
819 |
ExecutorService e = new ForkJoinPool(1); |
820 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
821 |
l.add(new StringTask()); |
822 |
try { |
823 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
824 |
shouldThrow(); |
825 |
} catch (NullPointerException success) { |
826 |
} finally { |
827 |
joinPool(e); |
828 |
} |
829 |
} |
830 |
|
831 |
/** |
832 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
833 |
*/ |
834 |
public void testTimedInvokeAny2() throws Throwable { |
835 |
ExecutorService e = new ForkJoinPool(1); |
836 |
try { |
837 |
e.invokeAny(new ArrayList<Callable<String>>(), |
838 |
MEDIUM_DELAY_MS, MILLISECONDS); |
839 |
shouldThrow(); |
840 |
} catch (IllegalArgumentException success) { |
841 |
} finally { |
842 |
joinPool(e); |
843 |
} |
844 |
} |
845 |
|
846 |
/** |
847 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
848 |
*/ |
849 |
public void testTimedInvokeAny3() throws Throwable { |
850 |
CountDownLatch latch = new CountDownLatch(1); |
851 |
ExecutorService e = new ForkJoinPool(1); |
852 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
853 |
l.add(latchAwaitingStringTask(latch)); |
854 |
l.add(null); |
855 |
try { |
856 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
857 |
shouldThrow(); |
858 |
} catch (NullPointerException success) { |
859 |
} finally { |
860 |
latch.countDown(); |
861 |
joinPool(e); |
862 |
} |
863 |
} |
864 |
|
865 |
/** |
866 |
* timed invokeAny(c) throws ExecutionException if no task completes |
867 |
*/ |
868 |
public void testTimedInvokeAny4() throws Throwable { |
869 |
ExecutorService e = new ForkJoinPool(1); |
870 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
871 |
l.add(new NPETask()); |
872 |
try { |
873 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
874 |
shouldThrow(); |
875 |
} catch (ExecutionException success) { |
876 |
assertTrue(success.getCause() instanceof NullPointerException); |
877 |
} finally { |
878 |
joinPool(e); |
879 |
} |
880 |
} |
881 |
|
882 |
/** |
883 |
* timed invokeAny(c) returns result of some task in c |
884 |
*/ |
885 |
public void testTimedInvokeAny5() throws Throwable { |
886 |
ExecutorService e = new ForkJoinPool(1); |
887 |
try { |
888 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
889 |
l.add(new StringTask()); |
890 |
l.add(new StringTask()); |
891 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
892 |
assertSame(TEST_STRING, result); |
893 |
} finally { |
894 |
joinPool(e); |
895 |
} |
896 |
} |
897 |
|
898 |
/** |
899 |
* timed invokeAll(null) throws NullPointerException |
900 |
*/ |
901 |
public void testTimedInvokeAll1() throws Throwable { |
902 |
ExecutorService e = new ForkJoinPool(1); |
903 |
try { |
904 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
905 |
shouldThrow(); |
906 |
} catch (NullPointerException success) { |
907 |
} finally { |
908 |
joinPool(e); |
909 |
} |
910 |
} |
911 |
|
912 |
/** |
913 |
* timed invokeAll(null time unit) throws NullPointerException |
914 |
*/ |
915 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
916 |
ExecutorService e = new ForkJoinPool(1); |
917 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
918 |
l.add(new StringTask()); |
919 |
try { |
920 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
921 |
shouldThrow(); |
922 |
} catch (NullPointerException success) { |
923 |
} finally { |
924 |
joinPool(e); |
925 |
} |
926 |
} |
927 |
|
928 |
/** |
929 |
* timed invokeAll(empty collection) returns empty collection |
930 |
*/ |
931 |
public void testTimedInvokeAll2() throws InterruptedException { |
932 |
ExecutorService e = new ForkJoinPool(1); |
933 |
try { |
934 |
List<Future<String>> r |
935 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
936 |
MEDIUM_DELAY_MS, MILLISECONDS); |
937 |
assertTrue(r.isEmpty()); |
938 |
} finally { |
939 |
joinPool(e); |
940 |
} |
941 |
} |
942 |
|
943 |
/** |
944 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
945 |
*/ |
946 |
public void testTimedInvokeAll3() throws InterruptedException { |
947 |
ExecutorService e = new ForkJoinPool(1); |
948 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
949 |
l.add(new StringTask()); |
950 |
l.add(null); |
951 |
try { |
952 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
953 |
shouldThrow(); |
954 |
} catch (NullPointerException success) { |
955 |
} finally { |
956 |
joinPool(e); |
957 |
} |
958 |
} |
959 |
|
960 |
/** |
961 |
* get of returned element of invokeAll(c) throws exception on failed task |
962 |
*/ |
963 |
public void testTimedInvokeAll4() throws Throwable { |
964 |
ExecutorService e = new ForkJoinPool(1); |
965 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
966 |
l.add(new NPETask()); |
967 |
List<Future<String>> futures |
968 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
969 |
assertEquals(1, futures.size()); |
970 |
try { |
971 |
futures.get(0).get(); |
972 |
shouldThrow(); |
973 |
} catch (ExecutionException success) { |
974 |
assertTrue(success.getCause() instanceof NullPointerException); |
975 |
} finally { |
976 |
joinPool(e); |
977 |
} |
978 |
} |
979 |
|
980 |
/** |
981 |
* timed invokeAll(c) returns results of all completed tasks in c |
982 |
*/ |
983 |
public void testTimedInvokeAll5() throws Throwable { |
984 |
try (PoolCloser<ForkJoinPool> poolCloser |
985 |
= new PoolCloser(new ForkJoinPool(1))) { |
986 |
ForkJoinPool e = poolCloser.pool; |
987 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
988 |
l.add(new StringTask()); |
989 |
l.add(new StringTask()); |
990 |
List<Future<String>> futures |
991 |
= e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
992 |
assertEquals(2, futures.size()); |
993 |
for (Future<String> future : futures) |
994 |
assertSame(TEST_STRING, future.get()); |
995 |
} |
996 |
} |
997 |
|
998 |
} |