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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/licenses/publicdomain |
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*/ |
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|
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.util.concurrent.locks.*; |
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import java.security.*; |
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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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junit.textui.TestRunner.run (suite()); |
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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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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() { 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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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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public 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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public 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 = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getFactory() == |
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ForkJoinPool.defaultForkJoinWorkerThreadFactory); |
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assertTrue(p.isQuiescent()); |
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assertTrue(p.getMaintainsParallelism()); |
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assertFalse(p.getAsyncMode()); |
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assertTrue(p.getActiveThreadCount() == 0); |
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assertTrue(p.getStealCount() == 0); |
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assertTrue(p.getQueuedTaskCount() == 0); |
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assertTrue(p.getQueuedSubmissionCount() == 0); |
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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); |
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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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/** |
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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 = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getParallelism() == 1); |
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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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* setParallelism changes reported parallelism level. |
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*/ |
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public void testSetParallelism() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getParallelism() == 1); |
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p.setParallelism(2); |
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assertTrue(p.getParallelism() == 2); |
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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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* setParallelism with argument <= 0 throws exception |
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*/ |
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public void testSetParallelism2() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getParallelism() == 1); |
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p.setParallelism(-2); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) { |
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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 = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getPoolSize() == 0); |
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Future<String> future = p.submit(new StringTask()); |
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assertTrue(p.getPoolSize() == 1); |
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|
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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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* setMaximumPoolSize changes size reported by getMaximumPoolSize. |
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*/ |
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public void testSetMaximumPoolSize() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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p.setMaximumPoolSize(2); |
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assertTrue(p.getMaximumPoolSize() == 2); |
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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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* setMaximumPoolSize with argument <= 0 throws exception |
263 |
*/ |
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public void testSetMaximumPoolSize2() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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p.setMaximumPoolSize(-2); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) { |
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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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* setMaintainsParallelism changes policy reported by |
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* getMaintainsParallelism. |
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*/ |
280 |
public void testSetMaintainsParallelism() { |
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ForkJoinPool p = null; |
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try { |
283 |
p = new ForkJoinPool(1); |
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p.setMaintainsParallelism(false); |
285 |
assertFalse(p.getMaintainsParallelism()); |
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} finally { |
287 |
joinPool(p); |
288 |
} |
289 |
} |
290 |
|
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/** |
292 |
* setAsyncMode changes policy reported by |
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* getAsyncMode. |
294 |
*/ |
295 |
public void testSetAsyncMode() { |
296 |
ForkJoinPool p = null; |
297 |
try { |
298 |
p = new ForkJoinPool(1); |
299 |
p.setAsyncMode(true); |
300 |
assertTrue(p.getAsyncMode()); |
301 |
} finally { |
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joinPool(p); |
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} |
304 |
} |
305 |
|
306 |
/** |
307 |
* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
308 |
* |
309 |
* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
310 |
* performs its defined action |
311 |
*/ |
312 |
public void testSetUncaughtExceptionHandler() throws InterruptedException { |
313 |
ForkJoinPool p = null; |
314 |
try { |
315 |
p = new ForkJoinPool(1, new FailingThreadFactory()); |
316 |
MyHandler eh = new MyHandler(); |
317 |
p.setUncaughtExceptionHandler(eh); |
318 |
assertEquals(eh, p.getUncaughtExceptionHandler()); |
319 |
p.execute(new FailingTask()); |
320 |
Thread.sleep(MEDIUM_DELAY_MS); |
321 |
assertTrue(eh.catches > 0); |
322 |
} finally { |
323 |
joinPool(p); |
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} |
325 |
} |
326 |
|
327 |
/** |
328 |
* setUncaughtExceptionHandler of null removes handler |
329 |
*/ |
330 |
public void testSetUncaughtExceptionHandler2() { |
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ForkJoinPool p = null; |
332 |
try { |
333 |
p = new ForkJoinPool(1); |
334 |
p.setUncaughtExceptionHandler(null); |
335 |
assertNull(p.getUncaughtExceptionHandler()); |
336 |
} finally { |
337 |
joinPool(p); |
338 |
} |
339 |
} |
340 |
|
341 |
|
342 |
/** |
343 |
* After invoking a single task, isQuiescent is true, |
344 |
* queues are empty, threads are not active, and |
345 |
* construction parameters continue to hold |
346 |
*/ |
347 |
public void testisQuiescent() throws InterruptedException { |
348 |
ForkJoinPool p = null; |
349 |
try { |
350 |
p = new ForkJoinPool(2); |
351 |
p.invoke(new FibTask(20)); |
352 |
assertTrue(p.getFactory() == |
353 |
ForkJoinPool.defaultForkJoinWorkerThreadFactory); |
354 |
Thread.sleep(MEDIUM_DELAY_MS); |
355 |
assertTrue(p.isQuiescent()); |
356 |
assertTrue(p.getMaintainsParallelism()); |
357 |
assertFalse(p.getAsyncMode()); |
358 |
assertTrue(p.getActiveThreadCount() == 0); |
359 |
assertTrue(p.getQueuedTaskCount() == 0); |
360 |
assertTrue(p.getQueuedSubmissionCount() == 0); |
361 |
assertFalse(p.hasQueuedSubmissions()); |
362 |
assertFalse(p.isShutdown()); |
363 |
assertFalse(p.isTerminating()); |
364 |
assertFalse(p.isTerminated()); |
365 |
} finally { |
366 |
joinPool(p); |
367 |
} |
368 |
} |
369 |
|
370 |
/** |
371 |
* Completed submit(ForkJoinTask) returns result |
372 |
*/ |
373 |
public void testSubmitForkJoinTask() throws Throwable { |
374 |
ForkJoinPool p = null; |
375 |
try { |
376 |
p = new ForkJoinPool(1); |
377 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
378 |
int r = f.get(); |
379 |
assertTrue(r == 21); |
380 |
} finally { |
381 |
joinPool(p); |
382 |
} |
383 |
} |
384 |
|
385 |
/** |
386 |
* A task submitted after shutdown is rejected |
387 |
*/ |
388 |
public void testSubmitAfterShutdown() { |
389 |
ForkJoinPool p = null; |
390 |
try { |
391 |
p = new ForkJoinPool(1); |
392 |
p.shutdown(); |
393 |
assertTrue(p.isShutdown()); |
394 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
395 |
shouldThrow(); |
396 |
} catch (RejectedExecutionException success) { |
397 |
} finally { |
398 |
joinPool(p); |
399 |
} |
400 |
} |
401 |
|
402 |
/** |
403 |
* Pool maintains parallelism when using ManagedBlocker |
404 |
*/ |
405 |
public void testBlockingForkJoinTask() throws Throwable { |
406 |
ForkJoinPool p = null; |
407 |
try { |
408 |
p = new ForkJoinPool(4); |
409 |
ReentrantLock lock = new ReentrantLock(); |
410 |
ManagedLocker locker = new ManagedLocker(lock); |
411 |
ForkJoinTask<Integer> f = new LockingFibTask(30, locker, lock); |
412 |
p.execute(f); |
413 |
assertTrue(p.getPoolSize() >= 4); |
414 |
int r = f.get(); |
415 |
assertTrue(r == 832040); |
416 |
} finally { |
417 |
p.shutdownNow(); // don't wait out shutdown |
418 |
} |
419 |
} |
420 |
|
421 |
/** |
422 |
* pollSubmission returns unexecuted submitted task, if present |
423 |
*/ |
424 |
public void testPollSubmission() { |
425 |
SubFJP p = null; |
426 |
try { |
427 |
p = new SubFJP(); |
428 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
429 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
430 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
431 |
ForkJoinTask r = p.pollSubmission(); |
432 |
assertTrue(r == a || r == b || r == c); |
433 |
assertFalse(r.isDone()); |
434 |
} finally { |
435 |
joinPool(p); |
436 |
} |
437 |
} |
438 |
|
439 |
/** |
440 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
441 |
*/ |
442 |
public void testDrainTasksTo() { |
443 |
SubFJP p = null; |
444 |
try { |
445 |
p = new SubFJP(); |
446 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
447 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
448 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
449 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
450 |
p.drainTasksTo(al); |
451 |
assertTrue(al.size() > 0); |
452 |
for (ForkJoinTask r : al) { |
453 |
assertTrue(r == a || r == b || r == c); |
454 |
assertFalse(r.isDone()); |
455 |
} |
456 |
} finally { |
457 |
joinPool(p); |
458 |
} |
459 |
} |
460 |
|
461 |
|
462 |
// FJ Versions of AbstractExecutorService tests |
463 |
|
464 |
/** |
465 |
* execute(runnable) runs it to completion |
466 |
*/ |
467 |
public void testExecuteRunnable() throws Throwable { |
468 |
ExecutorService e = new ForkJoinPool(1); |
469 |
TrackedShortRunnable task = new TrackedShortRunnable(); |
470 |
assertFalse(task.done); |
471 |
Future<?> future = e.submit(task); |
472 |
future.get(); |
473 |
assertTrue(task.done); |
474 |
} |
475 |
|
476 |
|
477 |
/** |
478 |
* Completed submit(callable) returns result |
479 |
*/ |
480 |
public void testSubmitCallable() throws Throwable { |
481 |
ExecutorService e = new ForkJoinPool(1); |
482 |
Future<String> future = e.submit(new StringTask()); |
483 |
String result = future.get(); |
484 |
assertSame(TEST_STRING, result); |
485 |
} |
486 |
|
487 |
/** |
488 |
* Completed submit(runnable) returns successfully |
489 |
*/ |
490 |
public void testSubmitRunnable() throws Throwable { |
491 |
ExecutorService e = new ForkJoinPool(1); |
492 |
Future<?> future = e.submit(new NoOpRunnable()); |
493 |
future.get(); |
494 |
assertTrue(future.isDone()); |
495 |
} |
496 |
|
497 |
/** |
498 |
* Completed submit(runnable, result) returns result |
499 |
*/ |
500 |
public void testSubmitRunnable2() throws Throwable { |
501 |
ExecutorService e = new ForkJoinPool(1); |
502 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
503 |
String result = future.get(); |
504 |
assertSame(TEST_STRING, result); |
505 |
} |
506 |
|
507 |
|
508 |
/** |
509 |
* A submitted privileged action to completion |
510 |
*/ |
511 |
public void testSubmitPrivilegedAction() throws Throwable { |
512 |
Policy savedPolicy = null; |
513 |
try { |
514 |
savedPolicy = Policy.getPolicy(); |
515 |
AdjustablePolicy policy = new AdjustablePolicy(); |
516 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
517 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
518 |
Policy.setPolicy(policy); |
519 |
} catch (AccessControlException ok) { |
520 |
return; |
521 |
} |
522 |
try { |
523 |
ExecutorService e = new ForkJoinPool(1); |
524 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
525 |
public Object run() { |
526 |
return TEST_STRING; |
527 |
}})); |
528 |
|
529 |
Object result = future.get(); |
530 |
assertSame(TEST_STRING, result); |
531 |
} |
532 |
finally { |
533 |
Policy.setPolicy(savedPolicy); |
534 |
} |
535 |
} |
536 |
|
537 |
/** |
538 |
* A submitted a privileged exception action runs to completion |
539 |
*/ |
540 |
public void testSubmitPrivilegedExceptionAction() throws Throwable { |
541 |
Policy savedPolicy = null; |
542 |
try { |
543 |
savedPolicy = Policy.getPolicy(); |
544 |
AdjustablePolicy policy = new AdjustablePolicy(); |
545 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
546 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
547 |
Policy.setPolicy(policy); |
548 |
} catch (AccessControlException ok) { |
549 |
return; |
550 |
} |
551 |
|
552 |
try { |
553 |
ExecutorService e = new ForkJoinPool(1); |
554 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
555 |
public Object run() { |
556 |
return TEST_STRING; |
557 |
}})); |
558 |
|
559 |
Object result = future.get(); |
560 |
assertSame(TEST_STRING, result); |
561 |
} |
562 |
finally { |
563 |
Policy.setPolicy(savedPolicy); |
564 |
} |
565 |
} |
566 |
|
567 |
/** |
568 |
* A submitted failed privileged exception action reports exception |
569 |
*/ |
570 |
public void testSubmitFailedPrivilegedExceptionAction() throws Throwable { |
571 |
Policy savedPolicy = null; |
572 |
try { |
573 |
savedPolicy = Policy.getPolicy(); |
574 |
AdjustablePolicy policy = new AdjustablePolicy(); |
575 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
576 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
577 |
Policy.setPolicy(policy); |
578 |
} catch (AccessControlException ok) { |
579 |
return; |
580 |
} |
581 |
|
582 |
|
583 |
try { |
584 |
ExecutorService e = new ForkJoinPool(1); |
585 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
586 |
public Object run() throws Exception { |
587 |
throw new IndexOutOfBoundsException(); |
588 |
}})); |
589 |
|
590 |
Object result = future.get(); |
591 |
shouldThrow(); |
592 |
} catch (ExecutionException success) { |
593 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
594 |
} finally { |
595 |
Policy.setPolicy(savedPolicy); |
596 |
} |
597 |
} |
598 |
|
599 |
/** |
600 |
* execute(null runnable) throws NullPointerException |
601 |
*/ |
602 |
public void testExecuteNullRunnable() { |
603 |
try { |
604 |
ExecutorService e = new ForkJoinPool(1); |
605 |
TrackedShortRunnable task = null; |
606 |
Future<?> future = e.submit(task); |
607 |
shouldThrow(); |
608 |
} catch (NullPointerException success) {} |
609 |
} |
610 |
|
611 |
|
612 |
/** |
613 |
* submit(null callable) throws NullPointerException |
614 |
*/ |
615 |
public void testSubmitNullCallable() { |
616 |
try { |
617 |
ExecutorService e = new ForkJoinPool(1); |
618 |
StringTask t = null; |
619 |
Future<String> future = e.submit(t); |
620 |
shouldThrow(); |
621 |
} catch (NullPointerException success) {} |
622 |
} |
623 |
|
624 |
|
625 |
/** |
626 |
* Blocking on submit(callable) throws InterruptedException if |
627 |
* caller interrupted. |
628 |
*/ |
629 |
public void testInterruptedSubmit() throws InterruptedException { |
630 |
final ForkJoinPool p = new ForkJoinPool(1); |
631 |
|
632 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
633 |
public void realRun() throws Throwable { |
634 |
p.submit(new CheckedCallable<Object>() { |
635 |
public Object realCall() throws Throwable { |
636 |
try { |
637 |
Thread.sleep(MEDIUM_DELAY_MS); |
638 |
} catch (InterruptedException ok) { |
639 |
} |
640 |
return null; |
641 |
}}).get(); |
642 |
}}); |
643 |
|
644 |
t.start(); |
645 |
Thread.sleep(SHORT_DELAY_MS); |
646 |
t.interrupt(); |
647 |
t.join(); |
648 |
p.shutdownNow(); |
649 |
joinPool(p); |
650 |
} |
651 |
|
652 |
/** |
653 |
* get of submit(callable) throws ExecutionException if callable |
654 |
* throws exception |
655 |
*/ |
656 |
public void testSubmitEE() throws Throwable { |
657 |
ForkJoinPool p = new ForkJoinPool(1); |
658 |
try { |
659 |
p.submit(new Callable() { |
660 |
public Object call() { |
661 |
int i = 5/0; |
662 |
return Boolean.TRUE; |
663 |
}}).get(); |
664 |
shouldThrow(); |
665 |
} catch (ExecutionException success) { |
666 |
assertTrue(success.getCause() instanceof ArithmeticException); |
667 |
} |
668 |
|
669 |
joinPool(p); |
670 |
} |
671 |
|
672 |
/** |
673 |
* invokeAny(null) throws NullPointerException |
674 |
*/ |
675 |
public void testInvokeAny1() throws Throwable { |
676 |
ExecutorService e = new ForkJoinPool(1); |
677 |
try { |
678 |
e.invokeAny(null); |
679 |
shouldThrow(); |
680 |
} catch (NullPointerException success) { |
681 |
} finally { |
682 |
joinPool(e); |
683 |
} |
684 |
} |
685 |
|
686 |
/** |
687 |
* invokeAny(empty collection) throws IllegalArgumentException |
688 |
*/ |
689 |
public void testInvokeAny2() throws Throwable { |
690 |
ExecutorService e = new ForkJoinPool(1); |
691 |
try { |
692 |
e.invokeAny(new ArrayList<Callable<String>>()); |
693 |
shouldThrow(); |
694 |
} catch (IllegalArgumentException success) { |
695 |
} finally { |
696 |
joinPool(e); |
697 |
} |
698 |
} |
699 |
|
700 |
/** |
701 |
* invokeAny(c) throws NullPointerException if c has a single null element |
702 |
*/ |
703 |
public void testInvokeAny3() throws Throwable { |
704 |
ExecutorService e = new ForkJoinPool(1); |
705 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
706 |
l.add(null); |
707 |
try { |
708 |
e.invokeAny(l); |
709 |
shouldThrow(); |
710 |
} catch (NullPointerException success) { |
711 |
} finally { |
712 |
joinPool(e); |
713 |
} |
714 |
} |
715 |
|
716 |
/** |
717 |
* invokeAny(c) throws NullPointerException if c has null elements |
718 |
*/ |
719 |
public void testInvokeAny4() throws Throwable { |
720 |
CountDownLatch latch = new CountDownLatch(1); |
721 |
ExecutorService e = new ForkJoinPool(1); |
722 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
723 |
l.add(latchAwaitingStringTask(latch)); |
724 |
l.add(null); |
725 |
try { |
726 |
e.invokeAny(l); |
727 |
shouldThrow(); |
728 |
} catch (NullPointerException success) { |
729 |
} finally { |
730 |
latch.countDown(); |
731 |
joinPool(e); |
732 |
} |
733 |
} |
734 |
|
735 |
/** |
736 |
* invokeAny(c) throws ExecutionException if no task in c completes |
737 |
*/ |
738 |
public void testInvokeAny5() throws Throwable { |
739 |
ExecutorService e = new ForkJoinPool(1); |
740 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
741 |
l.add(new NPETask()); |
742 |
try { |
743 |
e.invokeAny(l); |
744 |
shouldThrow(); |
745 |
} catch (ExecutionException success) { |
746 |
assertTrue(success.getCause() instanceof NullPointerException); |
747 |
} finally { |
748 |
joinPool(e); |
749 |
} |
750 |
} |
751 |
|
752 |
/** |
753 |
* invokeAny(c) returns result of some task in c if at least one completes |
754 |
*/ |
755 |
public void testInvokeAny6() throws Throwable { |
756 |
ExecutorService e = new ForkJoinPool(1); |
757 |
try { |
758 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
759 |
l.add(new StringTask()); |
760 |
l.add(new StringTask()); |
761 |
String result = e.invokeAny(l); |
762 |
assertSame(TEST_STRING, result); |
763 |
} finally { |
764 |
joinPool(e); |
765 |
} |
766 |
} |
767 |
|
768 |
/** |
769 |
* invokeAll(null) throws NullPointerException |
770 |
*/ |
771 |
public void testInvokeAll1() throws Throwable { |
772 |
ExecutorService e = new ForkJoinPool(1); |
773 |
try { |
774 |
e.invokeAll(null); |
775 |
shouldThrow(); |
776 |
} catch (NullPointerException success) { |
777 |
} finally { |
778 |
joinPool(e); |
779 |
} |
780 |
} |
781 |
|
782 |
/** |
783 |
* invokeAll(empty collection) returns empty collection |
784 |
*/ |
785 |
public void testInvokeAll2() throws InterruptedException { |
786 |
ExecutorService e = new ForkJoinPool(1); |
787 |
try { |
788 |
List<Future<String>> r |
789 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
790 |
assertTrue(r.isEmpty()); |
791 |
} finally { |
792 |
joinPool(e); |
793 |
} |
794 |
} |
795 |
|
796 |
/** |
797 |
* invokeAll(c) throws NullPointerException if c has null elements |
798 |
*/ |
799 |
public void testInvokeAll3() throws InterruptedException { |
800 |
ExecutorService e = new ForkJoinPool(1); |
801 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
802 |
l.add(new StringTask()); |
803 |
l.add(null); |
804 |
try { |
805 |
e.invokeAll(l); |
806 |
shouldThrow(); |
807 |
} catch (NullPointerException success) { |
808 |
} finally { |
809 |
joinPool(e); |
810 |
} |
811 |
} |
812 |
|
813 |
/** |
814 |
* get of returned element of invokeAll(c) throws |
815 |
* ExecutionException on failed task |
816 |
*/ |
817 |
public void testInvokeAll4() throws Throwable { |
818 |
ExecutorService e = new ForkJoinPool(1); |
819 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
820 |
l.add(new NPETask()); |
821 |
List<Future<String>> futures = e.invokeAll(l); |
822 |
assertEquals(1, futures.size()); |
823 |
try { |
824 |
futures.get(0).get(); |
825 |
shouldThrow(); |
826 |
} catch (ExecutionException success) { |
827 |
assertTrue(success.getCause() instanceof NullPointerException); |
828 |
} finally { |
829 |
joinPool(e); |
830 |
} |
831 |
} |
832 |
|
833 |
/** |
834 |
* invokeAll(c) returns results of all completed tasks in c |
835 |
*/ |
836 |
public void testInvokeAll5() throws Throwable { |
837 |
ExecutorService e = new ForkJoinPool(1); |
838 |
try { |
839 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
840 |
l.add(new StringTask()); |
841 |
l.add(new StringTask()); |
842 |
List<Future<String>> futures = e.invokeAll(l); |
843 |
assertEquals(2, futures.size()); |
844 |
for (Future<String> future : futures) |
845 |
assertSame(TEST_STRING, future.get()); |
846 |
} finally { |
847 |
joinPool(e); |
848 |
} |
849 |
} |
850 |
|
851 |
|
852 |
/** |
853 |
* timed invokeAny(null) throws NullPointerException |
854 |
*/ |
855 |
public void testTimedInvokeAny1() throws Throwable { |
856 |
ExecutorService e = new ForkJoinPool(1); |
857 |
try { |
858 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
859 |
shouldThrow(); |
860 |
} catch (NullPointerException success) { |
861 |
} finally { |
862 |
joinPool(e); |
863 |
} |
864 |
} |
865 |
|
866 |
/** |
867 |
* timed invokeAny(null time unit) throws NullPointerException |
868 |
*/ |
869 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
870 |
ExecutorService e = new ForkJoinPool(1); |
871 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
872 |
l.add(new StringTask()); |
873 |
try { |
874 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
875 |
shouldThrow(); |
876 |
} catch (NullPointerException success) { |
877 |
} finally { |
878 |
joinPool(e); |
879 |
} |
880 |
} |
881 |
|
882 |
/** |
883 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
884 |
*/ |
885 |
public void testTimedInvokeAny2() throws Throwable { |
886 |
ExecutorService e = new ForkJoinPool(1); |
887 |
try { |
888 |
e.invokeAny(new ArrayList<Callable<String>>(), |
889 |
MEDIUM_DELAY_MS, MILLISECONDS); |
890 |
shouldThrow(); |
891 |
} catch (IllegalArgumentException success) { |
892 |
} finally { |
893 |
joinPool(e); |
894 |
} |
895 |
} |
896 |
|
897 |
/** |
898 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
899 |
*/ |
900 |
public void testTimedInvokeAny3() throws Throwable { |
901 |
CountDownLatch latch = new CountDownLatch(1); |
902 |
ExecutorService e = new ForkJoinPool(1); |
903 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
904 |
l.add(latchAwaitingStringTask(latch)); |
905 |
l.add(null); |
906 |
try { |
907 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
908 |
shouldThrow(); |
909 |
} catch (NullPointerException success) { |
910 |
} finally { |
911 |
latch.countDown(); |
912 |
joinPool(e); |
913 |
} |
914 |
} |
915 |
|
916 |
/** |
917 |
* timed invokeAny(c) throws ExecutionException if no task completes |
918 |
*/ |
919 |
public void testTimedInvokeAny4() throws Throwable { |
920 |
ExecutorService e = new ForkJoinPool(1); |
921 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
922 |
l.add(new NPETask()); |
923 |
try { |
924 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
925 |
shouldThrow(); |
926 |
} catch (ExecutionException success) { |
927 |
assertTrue(success.getCause() instanceof NullPointerException); |
928 |
} finally { |
929 |
joinPool(e); |
930 |
} |
931 |
} |
932 |
|
933 |
/** |
934 |
* timed invokeAny(c) returns result of some task in c |
935 |
*/ |
936 |
public void testTimedInvokeAny5() throws Throwable { |
937 |
ExecutorService e = new ForkJoinPool(1); |
938 |
try { |
939 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
940 |
l.add(new StringTask()); |
941 |
l.add(new StringTask()); |
942 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
943 |
assertSame(TEST_STRING, result); |
944 |
} finally { |
945 |
joinPool(e); |
946 |
} |
947 |
} |
948 |
|
949 |
/** |
950 |
* timed invokeAll(null) throws NullPointerException |
951 |
*/ |
952 |
public void testTimedInvokeAll1() throws Throwable { |
953 |
ExecutorService e = new ForkJoinPool(1); |
954 |
try { |
955 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
956 |
shouldThrow(); |
957 |
} catch (NullPointerException success) { |
958 |
} finally { |
959 |
joinPool(e); |
960 |
} |
961 |
} |
962 |
|
963 |
/** |
964 |
* timed invokeAll(null time unit) throws NullPointerException |
965 |
*/ |
966 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
967 |
ExecutorService e = new ForkJoinPool(1); |
968 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
969 |
l.add(new StringTask()); |
970 |
try { |
971 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
972 |
shouldThrow(); |
973 |
} catch (NullPointerException success) { |
974 |
} finally { |
975 |
joinPool(e); |
976 |
} |
977 |
} |
978 |
|
979 |
/** |
980 |
* timed invokeAll(empty collection) returns empty collection |
981 |
*/ |
982 |
public void testTimedInvokeAll2() throws InterruptedException { |
983 |
ExecutorService e = new ForkJoinPool(1); |
984 |
try { |
985 |
List<Future<String>> r |
986 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
987 |
MEDIUM_DELAY_MS, MILLISECONDS); |
988 |
assertTrue(r.isEmpty()); |
989 |
} finally { |
990 |
joinPool(e); |
991 |
} |
992 |
} |
993 |
|
994 |
/** |
995 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
996 |
*/ |
997 |
public void testTimedInvokeAll3() throws InterruptedException { |
998 |
ExecutorService e = new ForkJoinPool(1); |
999 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
1000 |
l.add(new StringTask()); |
1001 |
l.add(null); |
1002 |
try { |
1003 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
1004 |
shouldThrow(); |
1005 |
} catch (NullPointerException success) { |
1006 |
} finally { |
1007 |
joinPool(e); |
1008 |
} |
1009 |
} |
1010 |
|
1011 |
/** |
1012 |
* get of returned element of invokeAll(c) throws exception on failed task |
1013 |
*/ |
1014 |
public void testTimedInvokeAll4() throws Throwable { |
1015 |
ExecutorService e = new ForkJoinPool(1); |
1016 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
1017 |
l.add(new NPETask()); |
1018 |
List<Future<String>> futures |
1019 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
1020 |
assertEquals(1, futures.size()); |
1021 |
try { |
1022 |
futures.get(0).get(); |
1023 |
shouldThrow(); |
1024 |
} catch (ExecutionException success) { |
1025 |
assertTrue(success.getCause() instanceof NullPointerException); |
1026 |
} finally { |
1027 |
joinPool(e); |
1028 |
} |
1029 |
} |
1030 |
|
1031 |
/** |
1032 |
* timed invokeAll(c) returns results of all completed tasks in c |
1033 |
*/ |
1034 |
public void testTimedInvokeAll5() throws Throwable { |
1035 |
ExecutorService e = new ForkJoinPool(1); |
1036 |
try { |
1037 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
1038 |
l.add(new StringTask()); |
1039 |
l.add(new StringTask()); |
1040 |
List<Future<String>> futures |
1041 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
1042 |
assertEquals(2, futures.size()); |
1043 |
for (Future<String> future : futures) |
1044 |
assertSame(TEST_STRING, future.get()); |
1045 |
} finally { |
1046 |
joinPool(e); |
1047 |
} |
1048 |
} |
1049 |
|
1050 |
} |