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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 (PoolCleaner cleaner = cleaner(p)) { |
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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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} |
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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 (PoolCleaner cleaner = cleaner(p)) { |
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assertEquals(1, p.getParallelism()); |
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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 (PoolCleaner cleaner = cleaner(p)) { |
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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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} |
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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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try (PoolCleaner cleaner = cleaner(p)) { |
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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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/** |
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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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*/ |
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public void testIsQuiescent() throws Exception { |
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ForkJoinPool p = new ForkJoinPool(2); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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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(); |
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} |
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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()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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assertTrue(f.isDone()); |
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assertEquals(6765, (int) f.get()); |
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} |
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} |
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|
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/** |
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* Completed submit(ForkJoinTask) returns result |
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*/ |
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public void testSubmitForkJoinTask() throws Throwable { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
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assertEquals(21, (int) f.get()); |
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} |
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} |
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|
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/** |
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* A task submitted after shutdown is rejected |
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*/ |
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public void testSubmitAfterShutdown() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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p.shutdown(); |
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assertTrue(p.isShutdown()); |
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try { |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
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shouldThrow(); |
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} catch (RejectedExecutionException success) {} |
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} |
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} |
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|
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/** |
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* Pool maintains parallelism when using ManagedBlocker |
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*/ |
347 |
public void testBlockingForkJoinTask() throws Throwable { |
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ForkJoinPool p = new ForkJoinPool(4); |
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try { |
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ReentrantLock lock = new ReentrantLock(); |
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ManagedLocker locker = new ManagedLocker(lock); |
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ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
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p.execute(f); |
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assertEquals(6765, (int) f.get()); |
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} finally { |
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p.shutdownNow(); // don't wait out shutdown |
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} |
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} |
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|
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/** |
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* pollSubmission returns unexecuted submitted task, if present |
362 |
*/ |
363 |
public void testPollSubmission() { |
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final CountDownLatch done = new CountDownLatch(1); |
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SubFJP p = new SubFJP(); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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ForkJoinTask a = p.submit(awaiter(done)); |
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ForkJoinTask b = p.submit(awaiter(done)); |
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ForkJoinTask c = p.submit(awaiter(done)); |
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ForkJoinTask r = p.pollSubmission(); |
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assertTrue(r == a || r == b || r == c); |
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assertFalse(r.isDone()); |
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done.countDown(); |
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} |
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} |
376 |
|
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/** |
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* drainTasksTo transfers unexecuted submitted tasks, if present |
379 |
*/ |
380 |
public void testDrainTasksTo() { |
381 |
final CountDownLatch done = new CountDownLatch(1); |
382 |
SubFJP p = new SubFJP(); |
383 |
try (PoolCleaner cleaner = cleaner(p)) { |
384 |
ForkJoinTask a = p.submit(awaiter(done)); |
385 |
ForkJoinTask b = p.submit(awaiter(done)); |
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ForkJoinTask c = p.submit(awaiter(done)); |
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ArrayList<ForkJoinTask> al = new ArrayList(); |
388 |
p.drainTasksTo(al); |
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assertTrue(al.size() > 0); |
390 |
for (ForkJoinTask r : al) { |
391 |
assertTrue(r == a || r == b || r == c); |
392 |
assertFalse(r.isDone()); |
393 |
} |
394 |
done.countDown(); |
395 |
} |
396 |
} |
397 |
|
398 |
// FJ Versions of AbstractExecutorService tests |
399 |
|
400 |
/** |
401 |
* execute(runnable) runs it to completion |
402 |
*/ |
403 |
public void testExecuteRunnable() throws Throwable { |
404 |
ExecutorService e = new ForkJoinPool(1); |
405 |
try (PoolCleaner cleaner = cleaner(e)) { |
406 |
final AtomicBoolean done = new AtomicBoolean(false); |
407 |
Future<?> future = e.submit(new CheckedRunnable() { |
408 |
public void realRun() { |
409 |
done.set(true); |
410 |
}}); |
411 |
assertNull(future.get()); |
412 |
assertNull(future.get(0, MILLISECONDS)); |
413 |
assertTrue(done.get()); |
414 |
assertTrue(future.isDone()); |
415 |
assertFalse(future.isCancelled()); |
416 |
} |
417 |
} |
418 |
|
419 |
/** |
420 |
* Completed submit(callable) returns result |
421 |
*/ |
422 |
public void testSubmitCallable() throws Throwable { |
423 |
ExecutorService e = new ForkJoinPool(1); |
424 |
try (PoolCleaner cleaner = cleaner(e)) { |
425 |
Future<String> future = e.submit(new StringTask()); |
426 |
assertSame(TEST_STRING, future.get()); |
427 |
assertTrue(future.isDone()); |
428 |
assertFalse(future.isCancelled()); |
429 |
} |
430 |
} |
431 |
|
432 |
/** |
433 |
* Completed submit(runnable) returns successfully |
434 |
*/ |
435 |
public void testSubmitRunnable() throws Throwable { |
436 |
ExecutorService e = new ForkJoinPool(1); |
437 |
try (PoolCleaner cleaner = cleaner(e)) { |
438 |
Future<?> future = e.submit(new NoOpRunnable()); |
439 |
assertNull(future.get()); |
440 |
assertTrue(future.isDone()); |
441 |
assertFalse(future.isCancelled()); |
442 |
} |
443 |
} |
444 |
|
445 |
/** |
446 |
* Completed submit(runnable, result) returns result |
447 |
*/ |
448 |
public void testSubmitRunnable2() throws Throwable { |
449 |
ExecutorService e = new ForkJoinPool(1); |
450 |
try (PoolCleaner cleaner = cleaner(e)) { |
451 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
452 |
assertSame(TEST_STRING, future.get()); |
453 |
assertTrue(future.isDone()); |
454 |
assertFalse(future.isCancelled()); |
455 |
} |
456 |
} |
457 |
|
458 |
/** |
459 |
* A submitted privileged action runs to completion |
460 |
*/ |
461 |
public void testSubmitPrivilegedAction() throws Exception { |
462 |
final Callable callable = Executors.callable(new PrivilegedAction() { |
463 |
public Object run() { return TEST_STRING; }}); |
464 |
Runnable r = new CheckedRunnable() { |
465 |
public void realRun() throws Exception { |
466 |
ExecutorService e = new ForkJoinPool(1); |
467 |
try (PoolCleaner cleaner = cleaner(e)) { |
468 |
Future future = e.submit(callable); |
469 |
assertSame(TEST_STRING, future.get()); |
470 |
} |
471 |
}}; |
472 |
|
473 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
474 |
} |
475 |
|
476 |
/** |
477 |
* A submitted privileged exception action runs to completion |
478 |
*/ |
479 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
480 |
final Callable callable = |
481 |
Executors.callable(new PrivilegedExceptionAction() { |
482 |
public Object run() { return TEST_STRING; }}); |
483 |
Runnable r = new CheckedRunnable() { |
484 |
public void realRun() throws Exception { |
485 |
ExecutorService e = new ForkJoinPool(1); |
486 |
try (PoolCleaner cleaner = cleaner(e)) { |
487 |
Future future = e.submit(callable); |
488 |
assertSame(TEST_STRING, future.get()); |
489 |
} |
490 |
}}; |
491 |
|
492 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
493 |
} |
494 |
|
495 |
/** |
496 |
* A submitted failed privileged exception action reports exception |
497 |
*/ |
498 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
499 |
final Callable callable = |
500 |
Executors.callable(new PrivilegedExceptionAction() { |
501 |
public Object run() { throw new IndexOutOfBoundsException(); }}); |
502 |
Runnable r = new CheckedRunnable() { |
503 |
public void realRun() throws Exception { |
504 |
ExecutorService e = new ForkJoinPool(1); |
505 |
try (PoolCleaner cleaner = cleaner(e)) { |
506 |
Future future = e.submit(callable); |
507 |
try { |
508 |
future.get(); |
509 |
shouldThrow(); |
510 |
} catch (ExecutionException success) { |
511 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
512 |
} |
513 |
} |
514 |
}}; |
515 |
|
516 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
517 |
} |
518 |
|
519 |
/** |
520 |
* execute(null runnable) throws NullPointerException |
521 |
*/ |
522 |
public void testExecuteNullRunnable() { |
523 |
ExecutorService e = new ForkJoinPool(1); |
524 |
try (PoolCleaner cleaner = cleaner(e)) { |
525 |
try { |
526 |
Future<?> future = e.submit((Runnable) null); |
527 |
shouldThrow(); |
528 |
} catch (NullPointerException success) {} |
529 |
} |
530 |
} |
531 |
|
532 |
/** |
533 |
* submit(null callable) throws NullPointerException |
534 |
*/ |
535 |
public void testSubmitNullCallable() { |
536 |
ExecutorService e = new ForkJoinPool(1); |
537 |
try (PoolCleaner cleaner = cleaner(e)) { |
538 |
try { |
539 |
Future<String> future = e.submit((Callable) null); |
540 |
shouldThrow(); |
541 |
} catch (NullPointerException success) {} |
542 |
} |
543 |
} |
544 |
|
545 |
/** |
546 |
* submit(callable).get() throws InterruptedException if interrupted |
547 |
*/ |
548 |
public void testInterruptedSubmit() throws InterruptedException { |
549 |
final CountDownLatch submitted = new CountDownLatch(1); |
550 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
551 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
552 |
public Void realCall() throws InterruptedException { |
553 |
assertTrue(quittingTime.await(2*LONG_DELAY_MS, MILLISECONDS)); |
554 |
return null; |
555 |
}}; |
556 |
final ExecutorService p = new ForkJoinPool(1); |
557 |
try (PoolCleaner cleaner = cleaner(p, quittingTime)) { |
558 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
559 |
public void realRun() throws Exception { |
560 |
Future<Void> future = p.submit(awaiter); |
561 |
submitted.countDown(); |
562 |
future.get(); |
563 |
}}); |
564 |
t.start(); |
565 |
await(submitted); |
566 |
t.interrupt(); |
567 |
awaitTermination(t); |
568 |
} |
569 |
} |
570 |
|
571 |
/** |
572 |
* get of submit(callable) throws ExecutionException if callable |
573 |
* throws exception |
574 |
*/ |
575 |
public void testSubmitEE() throws Throwable { |
576 |
ForkJoinPool p = new ForkJoinPool(1); |
577 |
try (PoolCleaner cleaner = cleaner(p)) { |
578 |
try { |
579 |
p.submit(new Callable() { |
580 |
public Object call() { throw new ArithmeticException(); }}) |
581 |
.get(); |
582 |
shouldThrow(); |
583 |
} catch (ExecutionException success) { |
584 |
assertTrue(success.getCause() instanceof ArithmeticException); |
585 |
} |
586 |
} |
587 |
} |
588 |
|
589 |
/** |
590 |
* invokeAny(null) throws NullPointerException |
591 |
*/ |
592 |
public void testInvokeAny1() throws Throwable { |
593 |
ExecutorService e = new ForkJoinPool(1); |
594 |
try (PoolCleaner cleaner = cleaner(e)) { |
595 |
try { |
596 |
e.invokeAny(null); |
597 |
shouldThrow(); |
598 |
} catch (NullPointerException success) {} |
599 |
} |
600 |
} |
601 |
|
602 |
/** |
603 |
* invokeAny(empty collection) throws IllegalArgumentException |
604 |
*/ |
605 |
public void testInvokeAny2() throws Throwable { |
606 |
ExecutorService e = new ForkJoinPool(1); |
607 |
try (PoolCleaner cleaner = cleaner(e)) { |
608 |
try { |
609 |
e.invokeAny(new ArrayList<Callable<String>>()); |
610 |
shouldThrow(); |
611 |
} catch (IllegalArgumentException success) {} |
612 |
} |
613 |
} |
614 |
|
615 |
/** |
616 |
* invokeAny(c) throws NullPointerException if c has a single null element |
617 |
*/ |
618 |
public void testInvokeAny3() throws Throwable { |
619 |
ExecutorService e = new ForkJoinPool(1); |
620 |
try (PoolCleaner cleaner = cleaner(e)) { |
621 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
622 |
l.add(null); |
623 |
try { |
624 |
e.invokeAny(l); |
625 |
shouldThrow(); |
626 |
} catch (NullPointerException success) {} |
627 |
} |
628 |
} |
629 |
|
630 |
/** |
631 |
* invokeAny(c) throws NullPointerException if c has null elements |
632 |
*/ |
633 |
public void testInvokeAny4() throws Throwable { |
634 |
CountDownLatch latch = new CountDownLatch(1); |
635 |
ExecutorService e = new ForkJoinPool(1); |
636 |
try (PoolCleaner cleaner = cleaner(e)) { |
637 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
638 |
l.add(latchAwaitingStringTask(latch)); |
639 |
l.add(null); |
640 |
try { |
641 |
e.invokeAny(l); |
642 |
shouldThrow(); |
643 |
} catch (NullPointerException success) {} |
644 |
latch.countDown(); |
645 |
} |
646 |
} |
647 |
|
648 |
/** |
649 |
* invokeAny(c) throws ExecutionException if no task in c completes |
650 |
*/ |
651 |
public void testInvokeAny5() throws Throwable { |
652 |
ExecutorService e = new ForkJoinPool(1); |
653 |
try (PoolCleaner cleaner = cleaner(e)) { |
654 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
655 |
l.add(new NPETask()); |
656 |
try { |
657 |
e.invokeAny(l); |
658 |
shouldThrow(); |
659 |
} catch (ExecutionException success) { |
660 |
assertTrue(success.getCause() instanceof NullPointerException); |
661 |
} |
662 |
} |
663 |
} |
664 |
|
665 |
/** |
666 |
* invokeAny(c) returns result of some task in c if at least one completes |
667 |
*/ |
668 |
public void testInvokeAny6() throws Throwable { |
669 |
ExecutorService e = new ForkJoinPool(1); |
670 |
try (PoolCleaner cleaner = cleaner(e)) { |
671 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
672 |
l.add(new StringTask()); |
673 |
l.add(new StringTask()); |
674 |
String result = e.invokeAny(l); |
675 |
assertSame(TEST_STRING, result); |
676 |
} |
677 |
} |
678 |
|
679 |
/** |
680 |
* invokeAll(null) throws NullPointerException |
681 |
*/ |
682 |
public void testInvokeAll1() throws Throwable { |
683 |
ExecutorService e = new ForkJoinPool(1); |
684 |
try (PoolCleaner cleaner = cleaner(e)) { |
685 |
try { |
686 |
e.invokeAll(null); |
687 |
shouldThrow(); |
688 |
} catch (NullPointerException success) {} |
689 |
} |
690 |
} |
691 |
|
692 |
/** |
693 |
* invokeAll(empty collection) returns empty collection |
694 |
*/ |
695 |
public void testInvokeAll2() throws InterruptedException { |
696 |
ExecutorService e = new ForkJoinPool(1); |
697 |
try (PoolCleaner cleaner = cleaner(e)) { |
698 |
List<Future<String>> r |
699 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
700 |
assertTrue(r.isEmpty()); |
701 |
} |
702 |
} |
703 |
|
704 |
/** |
705 |
* invokeAll(c) throws NullPointerException if c has null elements |
706 |
*/ |
707 |
public void testInvokeAll3() throws InterruptedException { |
708 |
ExecutorService e = new ForkJoinPool(1); |
709 |
try (PoolCleaner cleaner = cleaner(e)) { |
710 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
711 |
l.add(new StringTask()); |
712 |
l.add(null); |
713 |
try { |
714 |
e.invokeAll(l); |
715 |
shouldThrow(); |
716 |
} catch (NullPointerException success) {} |
717 |
} |
718 |
} |
719 |
|
720 |
/** |
721 |
* get of returned element of invokeAll(c) throws |
722 |
* ExecutionException on failed task |
723 |
*/ |
724 |
public void testInvokeAll4() throws Throwable { |
725 |
ExecutorService e = new ForkJoinPool(1); |
726 |
try (PoolCleaner cleaner = cleaner(e)) { |
727 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
728 |
l.add(new NPETask()); |
729 |
List<Future<String>> futures = e.invokeAll(l); |
730 |
assertEquals(1, futures.size()); |
731 |
try { |
732 |
futures.get(0).get(); |
733 |
shouldThrow(); |
734 |
} catch (ExecutionException success) { |
735 |
assertTrue(success.getCause() instanceof NullPointerException); |
736 |
} |
737 |
} |
738 |
} |
739 |
|
740 |
/** |
741 |
* invokeAll(c) returns results of all completed tasks in c |
742 |
*/ |
743 |
public void testInvokeAll5() throws Throwable { |
744 |
ExecutorService e = new ForkJoinPool(1); |
745 |
try (PoolCleaner cleaner = cleaner(e)) { |
746 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
747 |
l.add(new StringTask()); |
748 |
l.add(new StringTask()); |
749 |
List<Future<String>> futures = e.invokeAll(l); |
750 |
assertEquals(2, futures.size()); |
751 |
for (Future<String> future : futures) |
752 |
assertSame(TEST_STRING, future.get()); |
753 |
} |
754 |
} |
755 |
|
756 |
/** |
757 |
* timed invokeAny(null) throws NullPointerException |
758 |
*/ |
759 |
public void testTimedInvokeAny1() throws Throwable { |
760 |
ExecutorService e = new ForkJoinPool(1); |
761 |
try (PoolCleaner cleaner = cleaner(e)) { |
762 |
try { |
763 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
764 |
shouldThrow(); |
765 |
} catch (NullPointerException success) {} |
766 |
} |
767 |
} |
768 |
|
769 |
/** |
770 |
* timed invokeAny(null time unit) throws NullPointerException |
771 |
*/ |
772 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
773 |
ExecutorService e = new ForkJoinPool(1); |
774 |
try (PoolCleaner cleaner = cleaner(e)) { |
775 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
776 |
l.add(new StringTask()); |
777 |
try { |
778 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
779 |
shouldThrow(); |
780 |
} catch (NullPointerException success) {} |
781 |
} |
782 |
} |
783 |
|
784 |
/** |
785 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
786 |
*/ |
787 |
public void testTimedInvokeAny2() throws Throwable { |
788 |
ExecutorService e = new ForkJoinPool(1); |
789 |
try (PoolCleaner cleaner = cleaner(e)) { |
790 |
try { |
791 |
e.invokeAny(new ArrayList<Callable<String>>(), |
792 |
MEDIUM_DELAY_MS, MILLISECONDS); |
793 |
shouldThrow(); |
794 |
} catch (IllegalArgumentException success) {} |
795 |
} |
796 |
} |
797 |
|
798 |
/** |
799 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
800 |
*/ |
801 |
public void testTimedInvokeAny3() throws Throwable { |
802 |
CountDownLatch latch = new CountDownLatch(1); |
803 |
ExecutorService e = new ForkJoinPool(1); |
804 |
try (PoolCleaner cleaner = cleaner(e)) { |
805 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
806 |
l.add(latchAwaitingStringTask(latch)); |
807 |
l.add(null); |
808 |
try { |
809 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
810 |
shouldThrow(); |
811 |
} catch (NullPointerException success) {} |
812 |
latch.countDown(); |
813 |
} |
814 |
} |
815 |
|
816 |
/** |
817 |
* timed invokeAny(c) throws ExecutionException if no task completes |
818 |
*/ |
819 |
public void testTimedInvokeAny4() throws Throwable { |
820 |
ExecutorService e = new ForkJoinPool(1); |
821 |
try (PoolCleaner cleaner = cleaner(e)) { |
822 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
823 |
l.add(new NPETask()); |
824 |
try { |
825 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
826 |
shouldThrow(); |
827 |
} catch (ExecutionException success) { |
828 |
assertTrue(success.getCause() instanceof NullPointerException); |
829 |
} |
830 |
} |
831 |
} |
832 |
|
833 |
/** |
834 |
* timed invokeAny(c) returns result of some task in c |
835 |
*/ |
836 |
public void testTimedInvokeAny5() throws Throwable { |
837 |
ExecutorService e = new ForkJoinPool(1); |
838 |
try (PoolCleaner cleaner = cleaner(e)) { |
839 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
840 |
l.add(new StringTask()); |
841 |
l.add(new StringTask()); |
842 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
843 |
assertSame(TEST_STRING, result); |
844 |
} |
845 |
} |
846 |
|
847 |
/** |
848 |
* timed invokeAll(null) throws NullPointerException |
849 |
*/ |
850 |
public void testTimedInvokeAll1() throws Throwable { |
851 |
ExecutorService e = new ForkJoinPool(1); |
852 |
try (PoolCleaner cleaner = cleaner(e)) { |
853 |
try { |
854 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
855 |
shouldThrow(); |
856 |
} catch (NullPointerException success) {} |
857 |
} |
858 |
} |
859 |
|
860 |
/** |
861 |
* timed invokeAll(null time unit) throws NullPointerException |
862 |
*/ |
863 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
864 |
ExecutorService e = new ForkJoinPool(1); |
865 |
try (PoolCleaner cleaner = cleaner(e)) { |
866 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
867 |
l.add(new StringTask()); |
868 |
try { |
869 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
870 |
shouldThrow(); |
871 |
} catch (NullPointerException success) {} |
872 |
} |
873 |
} |
874 |
|
875 |
/** |
876 |
* timed invokeAll(empty collection) returns empty collection |
877 |
*/ |
878 |
public void testTimedInvokeAll2() throws InterruptedException { |
879 |
ExecutorService e = new ForkJoinPool(1); |
880 |
try (PoolCleaner cleaner = cleaner(e)) { |
881 |
List<Future<String>> r |
882 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
883 |
MEDIUM_DELAY_MS, MILLISECONDS); |
884 |
assertTrue(r.isEmpty()); |
885 |
} |
886 |
} |
887 |
|
888 |
/** |
889 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
890 |
*/ |
891 |
public void testTimedInvokeAll3() throws InterruptedException { |
892 |
ExecutorService e = new ForkJoinPool(1); |
893 |
try (PoolCleaner cleaner = cleaner(e)) { |
894 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
895 |
l.add(new StringTask()); |
896 |
l.add(null); |
897 |
try { |
898 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
899 |
shouldThrow(); |
900 |
} catch (NullPointerException success) {} |
901 |
} |
902 |
} |
903 |
|
904 |
/** |
905 |
* get of returned element of invokeAll(c) throws exception on failed task |
906 |
*/ |
907 |
public void testTimedInvokeAll4() throws Throwable { |
908 |
ExecutorService e = new ForkJoinPool(1); |
909 |
try (PoolCleaner cleaner = cleaner(e)) { |
910 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
911 |
l.add(new NPETask()); |
912 |
List<Future<String>> futures |
913 |
= e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
914 |
assertEquals(1, futures.size()); |
915 |
try { |
916 |
futures.get(0).get(); |
917 |
shouldThrow(); |
918 |
} catch (ExecutionException success) { |
919 |
assertTrue(success.getCause() instanceof NullPointerException); |
920 |
} |
921 |
} |
922 |
} |
923 |
|
924 |
/** |
925 |
* timed invokeAll(c) returns results of all completed tasks in c |
926 |
*/ |
927 |
public void testTimedInvokeAll5() throws Throwable { |
928 |
ForkJoinPool e = new ForkJoinPool(1); |
929 |
try (PoolCleaner cleaner = cleaner(e)) { |
930 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
931 |
l.add(new StringTask()); |
932 |
l.add(new StringTask()); |
933 |
List<Future<String>> futures |
934 |
= e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
935 |
assertEquals(2, futures.size()); |
936 |
for (Future<String> future : futures) |
937 |
assertSame(TEST_STRING, future.get()); |
938 |
} |
939 |
} |
940 |
|
941 |
} |