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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.Executor; |
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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.AbstractExecutorService; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.CancellationException; |
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import java.util.concurrent.RejectedExecutionException; |
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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.RecursiveAction; |
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import java.util.concurrent.RecursiveTask; |
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import java.util.concurrent.TimeUnit; |
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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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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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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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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, 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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/** |
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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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* 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.getActiveThreadCount() == 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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* 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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ForkJoinPool p = null; |
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try { |
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MyHandler eh = new MyHandler(); |
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p = new ForkJoinPool(1, new FailingThreadFactory(), eh, false); |
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assert(eh == p.getUncaughtExceptionHandler()); |
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p.execute(new FailingTask()); |
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Thread.sleep(MEDIUM_DELAY_MS); |
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assertTrue(eh.catches > 0); |
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} finally { |
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p.shutdownNow(); |
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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 is true, |
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* queues are empty, threads are not active, and |
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* construction parameters continue to hold |
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*/ |
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public void testisQuiescent() throws InterruptedException { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(2); |
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p.invoke(new FibTask(20)); |
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assertTrue(p.getFactory() == |
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ForkJoinPool.defaultForkJoinWorkerThreadFactory); |
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Thread.sleep(MEDIUM_DELAY_MS); |
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertTrue(p.getActiveThreadCount() == 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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* Completed submit(ForkJoinTask) returns result |
279 |
*/ |
280 |
public void testSubmitForkJoinTask() throws Throwable { |
281 |
ForkJoinPool p = null; |
282 |
try { |
283 |
p = new ForkJoinPool(1); |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
285 |
int r = f.get(); |
286 |
assertTrue(r == 21); |
287 |
} finally { |
288 |
joinPool(p); |
289 |
} |
290 |
} |
291 |
|
292 |
/** |
293 |
* A task submitted after shutdown is rejected |
294 |
*/ |
295 |
public void testSubmitAfterShutdown() { |
296 |
ForkJoinPool p = null; |
297 |
try { |
298 |
p = new ForkJoinPool(1); |
299 |
p.shutdown(); |
300 |
assertTrue(p.isShutdown()); |
301 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
302 |
shouldThrow(); |
303 |
} catch (RejectedExecutionException success) { |
304 |
} finally { |
305 |
joinPool(p); |
306 |
} |
307 |
} |
308 |
|
309 |
/** |
310 |
* Pool maintains parallelism when using ManagedBlocker |
311 |
*/ |
312 |
public void testBlockingForkJoinTask() throws Throwable { |
313 |
ForkJoinPool p = null; |
314 |
try { |
315 |
p = new ForkJoinPool(4); |
316 |
ReentrantLock lock = new ReentrantLock(); |
317 |
ManagedLocker locker = new ManagedLocker(lock); |
318 |
ForkJoinTask<Integer> f = new LockingFibTask(30, locker, lock); |
319 |
p.execute(f); |
320 |
int r = f.get(); |
321 |
assertTrue(r == 832040); |
322 |
} finally { |
323 |
p.shutdownNow(); // don't wait out shutdown |
324 |
} |
325 |
} |
326 |
|
327 |
/** |
328 |
* pollSubmission returns unexecuted submitted task, if present |
329 |
*/ |
330 |
public void testPollSubmission() { |
331 |
SubFJP p = null; |
332 |
try { |
333 |
p = new SubFJP(); |
334 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
335 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
336 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
337 |
ForkJoinTask r = p.pollSubmission(); |
338 |
assertTrue(r == a || r == b || r == c); |
339 |
assertFalse(r.isDone()); |
340 |
} finally { |
341 |
joinPool(p); |
342 |
} |
343 |
} |
344 |
|
345 |
/** |
346 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
347 |
*/ |
348 |
public void testDrainTasksTo() { |
349 |
SubFJP p = null; |
350 |
try { |
351 |
p = new SubFJP(); |
352 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
353 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
354 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
355 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
356 |
p.drainTasksTo(al); |
357 |
assertTrue(al.size() > 0); |
358 |
for (ForkJoinTask r : al) { |
359 |
assertTrue(r == a || r == b || r == c); |
360 |
assertFalse(r.isDone()); |
361 |
} |
362 |
} finally { |
363 |
joinPool(p); |
364 |
} |
365 |
} |
366 |
|
367 |
|
368 |
// FJ Versions of AbstractExecutorService tests |
369 |
|
370 |
/** |
371 |
* execute(runnable) runs it to completion |
372 |
*/ |
373 |
public void testExecuteRunnable() throws Throwable { |
374 |
ExecutorService e = new ForkJoinPool(1); |
375 |
TrackedShortRunnable task = new TrackedShortRunnable(); |
376 |
assertFalse(task.done); |
377 |
Future<?> future = e.submit(task); |
378 |
future.get(); |
379 |
assertTrue(task.done); |
380 |
} |
381 |
|
382 |
|
383 |
/** |
384 |
* Completed submit(callable) returns result |
385 |
*/ |
386 |
public void testSubmitCallable() throws Throwable { |
387 |
ExecutorService e = new ForkJoinPool(1); |
388 |
Future<String> future = e.submit(new StringTask()); |
389 |
String result = future.get(); |
390 |
assertSame(TEST_STRING, result); |
391 |
} |
392 |
|
393 |
/** |
394 |
* Completed submit(runnable) returns successfully |
395 |
*/ |
396 |
public void testSubmitRunnable() throws Throwable { |
397 |
ExecutorService e = new ForkJoinPool(1); |
398 |
Future<?> future = e.submit(new NoOpRunnable()); |
399 |
future.get(); |
400 |
assertTrue(future.isDone()); |
401 |
} |
402 |
|
403 |
/** |
404 |
* Completed submit(runnable, result) returns result |
405 |
*/ |
406 |
public void testSubmitRunnable2() throws Throwable { |
407 |
ExecutorService e = new ForkJoinPool(1); |
408 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
409 |
String result = future.get(); |
410 |
assertSame(TEST_STRING, result); |
411 |
} |
412 |
|
413 |
|
414 |
/** |
415 |
* A submitted privileged action to completion |
416 |
*/ |
417 |
public void testSubmitPrivilegedAction() throws Throwable { |
418 |
Policy savedPolicy = null; |
419 |
try { |
420 |
savedPolicy = Policy.getPolicy(); |
421 |
AdjustablePolicy policy = new AdjustablePolicy(); |
422 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
423 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
424 |
Policy.setPolicy(policy); |
425 |
} catch (AccessControlException ok) { |
426 |
return; |
427 |
} |
428 |
try { |
429 |
ExecutorService e = new ForkJoinPool(1); |
430 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
431 |
public Object run() { |
432 |
return TEST_STRING; |
433 |
}})); |
434 |
|
435 |
Object result = future.get(); |
436 |
assertSame(TEST_STRING, result); |
437 |
} |
438 |
finally { |
439 |
Policy.setPolicy(savedPolicy); |
440 |
} |
441 |
} |
442 |
|
443 |
/** |
444 |
* A submitted a privileged exception action runs to completion |
445 |
*/ |
446 |
public void testSubmitPrivilegedExceptionAction() throws Throwable { |
447 |
Policy savedPolicy = null; |
448 |
try { |
449 |
savedPolicy = Policy.getPolicy(); |
450 |
AdjustablePolicy policy = new AdjustablePolicy(); |
451 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
452 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
453 |
Policy.setPolicy(policy); |
454 |
} catch (AccessControlException ok) { |
455 |
return; |
456 |
} |
457 |
|
458 |
try { |
459 |
ExecutorService e = new ForkJoinPool(1); |
460 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
461 |
public Object run() { |
462 |
return TEST_STRING; |
463 |
}})); |
464 |
|
465 |
Object result = future.get(); |
466 |
assertSame(TEST_STRING, result); |
467 |
} |
468 |
finally { |
469 |
Policy.setPolicy(savedPolicy); |
470 |
} |
471 |
} |
472 |
|
473 |
/** |
474 |
* A submitted failed privileged exception action reports exception |
475 |
*/ |
476 |
public void testSubmitFailedPrivilegedExceptionAction() throws Throwable { |
477 |
Policy savedPolicy = null; |
478 |
try { |
479 |
savedPolicy = Policy.getPolicy(); |
480 |
AdjustablePolicy policy = new AdjustablePolicy(); |
481 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
482 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
483 |
Policy.setPolicy(policy); |
484 |
} catch (AccessControlException ok) { |
485 |
return; |
486 |
} |
487 |
|
488 |
|
489 |
try { |
490 |
ExecutorService e = new ForkJoinPool(1); |
491 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
492 |
public Object run() throws Exception { |
493 |
throw new IndexOutOfBoundsException(); |
494 |
}})); |
495 |
|
496 |
Object result = future.get(); |
497 |
shouldThrow(); |
498 |
} catch (ExecutionException success) { |
499 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
500 |
} finally { |
501 |
Policy.setPolicy(savedPolicy); |
502 |
} |
503 |
} |
504 |
|
505 |
/** |
506 |
* execute(null runnable) throws NullPointerException |
507 |
*/ |
508 |
public void testExecuteNullRunnable() { |
509 |
try { |
510 |
ExecutorService e = new ForkJoinPool(1); |
511 |
TrackedShortRunnable task = null; |
512 |
Future<?> future = e.submit(task); |
513 |
shouldThrow(); |
514 |
} catch (NullPointerException success) {} |
515 |
} |
516 |
|
517 |
|
518 |
/** |
519 |
* submit(null callable) throws NullPointerException |
520 |
*/ |
521 |
public void testSubmitNullCallable() { |
522 |
try { |
523 |
ExecutorService e = new ForkJoinPool(1); |
524 |
StringTask t = null; |
525 |
Future<String> future = e.submit(t); |
526 |
shouldThrow(); |
527 |
} catch (NullPointerException success) {} |
528 |
} |
529 |
|
530 |
|
531 |
/** |
532 |
* Blocking on submit(callable) throws InterruptedException if |
533 |
* caller interrupted. |
534 |
*/ |
535 |
public void testInterruptedSubmit() throws InterruptedException { |
536 |
final ForkJoinPool p = new ForkJoinPool(1); |
537 |
|
538 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
539 |
public void realRun() throws Throwable { |
540 |
p.submit(new CheckedCallable<Object>() { |
541 |
public Object realCall() throws Throwable { |
542 |
try { |
543 |
Thread.sleep(MEDIUM_DELAY_MS); |
544 |
} catch (InterruptedException ok) { |
545 |
} |
546 |
return null; |
547 |
}}).get(); |
548 |
}}); |
549 |
|
550 |
t.start(); |
551 |
Thread.sleep(SHORT_DELAY_MS); |
552 |
t.interrupt(); |
553 |
t.join(); |
554 |
p.shutdownNow(); |
555 |
joinPool(p); |
556 |
} |
557 |
|
558 |
/** |
559 |
* get of submit(callable) throws ExecutionException if callable |
560 |
* throws exception |
561 |
*/ |
562 |
public void testSubmitEE() throws Throwable { |
563 |
ForkJoinPool p = new ForkJoinPool(1); |
564 |
try { |
565 |
p.submit(new Callable() { |
566 |
public Object call() { |
567 |
int i = 5/0; |
568 |
return Boolean.TRUE; |
569 |
}}).get(); |
570 |
shouldThrow(); |
571 |
} catch (ExecutionException success) { |
572 |
assertTrue(success.getCause() instanceof ArithmeticException); |
573 |
} |
574 |
|
575 |
joinPool(p); |
576 |
} |
577 |
|
578 |
/** |
579 |
* invokeAny(null) throws NullPointerException |
580 |
*/ |
581 |
public void testInvokeAny1() throws Throwable { |
582 |
ExecutorService e = new ForkJoinPool(1); |
583 |
try { |
584 |
e.invokeAny(null); |
585 |
shouldThrow(); |
586 |
} catch (NullPointerException success) { |
587 |
} finally { |
588 |
joinPool(e); |
589 |
} |
590 |
} |
591 |
|
592 |
/** |
593 |
* invokeAny(empty collection) throws IllegalArgumentException |
594 |
*/ |
595 |
public void testInvokeAny2() throws Throwable { |
596 |
ExecutorService e = new ForkJoinPool(1); |
597 |
try { |
598 |
e.invokeAny(new ArrayList<Callable<String>>()); |
599 |
shouldThrow(); |
600 |
} catch (IllegalArgumentException success) { |
601 |
} finally { |
602 |
joinPool(e); |
603 |
} |
604 |
} |
605 |
|
606 |
/** |
607 |
* invokeAny(c) throws NullPointerException if c has a single null element |
608 |
*/ |
609 |
public void testInvokeAny3() throws Throwable { |
610 |
ExecutorService e = new ForkJoinPool(1); |
611 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
612 |
l.add(null); |
613 |
try { |
614 |
e.invokeAny(l); |
615 |
shouldThrow(); |
616 |
} catch (NullPointerException success) { |
617 |
} finally { |
618 |
joinPool(e); |
619 |
} |
620 |
} |
621 |
|
622 |
/** |
623 |
* invokeAny(c) throws NullPointerException if c has null elements |
624 |
*/ |
625 |
public void testInvokeAny4() throws Throwable { |
626 |
CountDownLatch latch = new CountDownLatch(1); |
627 |
ExecutorService e = new ForkJoinPool(1); |
628 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
629 |
l.add(latchAwaitingStringTask(latch)); |
630 |
l.add(null); |
631 |
try { |
632 |
e.invokeAny(l); |
633 |
shouldThrow(); |
634 |
} catch (NullPointerException success) { |
635 |
} finally { |
636 |
latch.countDown(); |
637 |
joinPool(e); |
638 |
} |
639 |
} |
640 |
|
641 |
/** |
642 |
* invokeAny(c) throws ExecutionException if no task in c completes |
643 |
*/ |
644 |
public void testInvokeAny5() throws Throwable { |
645 |
ExecutorService e = new ForkJoinPool(1); |
646 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
647 |
l.add(new NPETask()); |
648 |
try { |
649 |
e.invokeAny(l); |
650 |
shouldThrow(); |
651 |
} catch (ExecutionException success) { |
652 |
assertTrue(success.getCause() instanceof NullPointerException); |
653 |
} finally { |
654 |
joinPool(e); |
655 |
} |
656 |
} |
657 |
|
658 |
/** |
659 |
* invokeAny(c) returns result of some task in c if at least one completes |
660 |
*/ |
661 |
public void testInvokeAny6() throws Throwable { |
662 |
ExecutorService e = new ForkJoinPool(1); |
663 |
try { |
664 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
665 |
l.add(new StringTask()); |
666 |
l.add(new StringTask()); |
667 |
String result = e.invokeAny(l); |
668 |
assertSame(TEST_STRING, result); |
669 |
} finally { |
670 |
joinPool(e); |
671 |
} |
672 |
} |
673 |
|
674 |
/** |
675 |
* invokeAll(null) throws NullPointerException |
676 |
*/ |
677 |
public void testInvokeAll1() throws Throwable { |
678 |
ExecutorService e = new ForkJoinPool(1); |
679 |
try { |
680 |
e.invokeAll(null); |
681 |
shouldThrow(); |
682 |
} catch (NullPointerException success) { |
683 |
} finally { |
684 |
joinPool(e); |
685 |
} |
686 |
} |
687 |
|
688 |
/** |
689 |
* invokeAll(empty collection) returns empty collection |
690 |
*/ |
691 |
public void testInvokeAll2() throws InterruptedException { |
692 |
ExecutorService e = new ForkJoinPool(1); |
693 |
try { |
694 |
List<Future<String>> r |
695 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
696 |
assertTrue(r.isEmpty()); |
697 |
} finally { |
698 |
joinPool(e); |
699 |
} |
700 |
} |
701 |
|
702 |
/** |
703 |
* invokeAll(c) throws NullPointerException if c has null elements |
704 |
*/ |
705 |
public void testInvokeAll3() throws InterruptedException { |
706 |
ExecutorService e = new ForkJoinPool(1); |
707 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
708 |
l.add(new StringTask()); |
709 |
l.add(null); |
710 |
try { |
711 |
e.invokeAll(l); |
712 |
shouldThrow(); |
713 |
} catch (NullPointerException success) { |
714 |
} finally { |
715 |
joinPool(e); |
716 |
} |
717 |
} |
718 |
|
719 |
/** |
720 |
* get of returned element of invokeAll(c) throws |
721 |
* ExecutionException on failed task |
722 |
*/ |
723 |
public void testInvokeAll4() throws Throwable { |
724 |
ExecutorService e = new ForkJoinPool(1); |
725 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
726 |
l.add(new NPETask()); |
727 |
List<Future<String>> futures = e.invokeAll(l); |
728 |
assertEquals(1, futures.size()); |
729 |
try { |
730 |
futures.get(0).get(); |
731 |
shouldThrow(); |
732 |
} catch (ExecutionException success) { |
733 |
assertTrue(success.getCause() instanceof NullPointerException); |
734 |
} finally { |
735 |
joinPool(e); |
736 |
} |
737 |
} |
738 |
|
739 |
/** |
740 |
* invokeAll(c) returns results of all completed tasks in c |
741 |
*/ |
742 |
public void testInvokeAll5() throws Throwable { |
743 |
ExecutorService e = new ForkJoinPool(1); |
744 |
try { |
745 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
746 |
l.add(new StringTask()); |
747 |
l.add(new StringTask()); |
748 |
List<Future<String>> futures = e.invokeAll(l); |
749 |
assertEquals(2, futures.size()); |
750 |
for (Future<String> future : futures) |
751 |
assertSame(TEST_STRING, future.get()); |
752 |
} finally { |
753 |
joinPool(e); |
754 |
} |
755 |
} |
756 |
|
757 |
|
758 |
/** |
759 |
* timed invokeAny(null) throws NullPointerException |
760 |
*/ |
761 |
public void testTimedInvokeAny1() throws Throwable { |
762 |
ExecutorService e = new ForkJoinPool(1); |
763 |
try { |
764 |
e.invokeAny(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
765 |
shouldThrow(); |
766 |
} catch (NullPointerException success) { |
767 |
} finally { |
768 |
joinPool(e); |
769 |
} |
770 |
} |
771 |
|
772 |
/** |
773 |
* timed invokeAny(null time unit) throws NullPointerException |
774 |
*/ |
775 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
776 |
ExecutorService e = new ForkJoinPool(1); |
777 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
778 |
l.add(new StringTask()); |
779 |
try { |
780 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
781 |
shouldThrow(); |
782 |
} catch (NullPointerException success) { |
783 |
} finally { |
784 |
joinPool(e); |
785 |
} |
786 |
} |
787 |
|
788 |
/** |
789 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
790 |
*/ |
791 |
public void testTimedInvokeAny2() throws Throwable { |
792 |
ExecutorService e = new ForkJoinPool(1); |
793 |
try { |
794 |
e.invokeAny(new ArrayList<Callable<String>>(), |
795 |
MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
796 |
shouldThrow(); |
797 |
} catch (IllegalArgumentException success) { |
798 |
} finally { |
799 |
joinPool(e); |
800 |
} |
801 |
} |
802 |
|
803 |
/** |
804 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
805 |
*/ |
806 |
public void testTimedInvokeAny3() throws Throwable { |
807 |
CountDownLatch latch = new CountDownLatch(1); |
808 |
ExecutorService e = new ForkJoinPool(1); |
809 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
810 |
l.add(latchAwaitingStringTask(latch)); |
811 |
l.add(null); |
812 |
try { |
813 |
e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
814 |
shouldThrow(); |
815 |
} catch (NullPointerException success) { |
816 |
} finally { |
817 |
latch.countDown(); |
818 |
joinPool(e); |
819 |
} |
820 |
} |
821 |
|
822 |
/** |
823 |
* timed invokeAny(c) throws ExecutionException if no task completes |
824 |
*/ |
825 |
public void testTimedInvokeAny4() throws Throwable { |
826 |
ExecutorService e = new ForkJoinPool(1); |
827 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
828 |
l.add(new NPETask()); |
829 |
try { |
830 |
e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
831 |
shouldThrow(); |
832 |
} catch (ExecutionException success) { |
833 |
assertTrue(success.getCause() instanceof NullPointerException); |
834 |
} finally { |
835 |
joinPool(e); |
836 |
} |
837 |
} |
838 |
|
839 |
/** |
840 |
* timed invokeAny(c) returns result of some task in c |
841 |
*/ |
842 |
public void testTimedInvokeAny5() throws Throwable { |
843 |
ExecutorService e = new ForkJoinPool(1); |
844 |
try { |
845 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
846 |
l.add(new StringTask()); |
847 |
l.add(new StringTask()); |
848 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
849 |
assertSame(TEST_STRING, result); |
850 |
} finally { |
851 |
joinPool(e); |
852 |
} |
853 |
} |
854 |
|
855 |
/** |
856 |
* timed invokeAll(null) throws NullPointerException |
857 |
*/ |
858 |
public void testTimedInvokeAll1() throws Throwable { |
859 |
ExecutorService e = new ForkJoinPool(1); |
860 |
try { |
861 |
e.invokeAll(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
862 |
shouldThrow(); |
863 |
} catch (NullPointerException success) { |
864 |
} finally { |
865 |
joinPool(e); |
866 |
} |
867 |
} |
868 |
|
869 |
/** |
870 |
* timed invokeAll(null time unit) throws NullPointerException |
871 |
*/ |
872 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
873 |
ExecutorService e = new ForkJoinPool(1); |
874 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
875 |
l.add(new StringTask()); |
876 |
try { |
877 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
878 |
shouldThrow(); |
879 |
} catch (NullPointerException success) { |
880 |
} finally { |
881 |
joinPool(e); |
882 |
} |
883 |
} |
884 |
|
885 |
/** |
886 |
* timed invokeAll(empty collection) returns empty collection |
887 |
*/ |
888 |
public void testTimedInvokeAll2() throws InterruptedException { |
889 |
ExecutorService e = new ForkJoinPool(1); |
890 |
try { |
891 |
List<Future<String>> r |
892 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
893 |
MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
894 |
assertTrue(r.isEmpty()); |
895 |
} finally { |
896 |
joinPool(e); |
897 |
} |
898 |
} |
899 |
|
900 |
/** |
901 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
902 |
*/ |
903 |
public void testTimedInvokeAll3() throws InterruptedException { |
904 |
ExecutorService e = new ForkJoinPool(1); |
905 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
906 |
l.add(new StringTask()); |
907 |
l.add(null); |
908 |
try { |
909 |
e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
910 |
shouldThrow(); |
911 |
} catch (NullPointerException success) { |
912 |
} finally { |
913 |
joinPool(e); |
914 |
} |
915 |
} |
916 |
|
917 |
/** |
918 |
* get of returned element of invokeAll(c) throws exception on failed task |
919 |
*/ |
920 |
public void testTimedInvokeAll4() throws Throwable { |
921 |
ExecutorService e = new ForkJoinPool(1); |
922 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
923 |
l.add(new NPETask()); |
924 |
List<Future<String>> futures |
925 |
= e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
926 |
assertEquals(1, futures.size()); |
927 |
try { |
928 |
futures.get(0).get(); |
929 |
shouldThrow(); |
930 |
} catch (ExecutionException success) { |
931 |
assertTrue(success.getCause() instanceof NullPointerException); |
932 |
} finally { |
933 |
joinPool(e); |
934 |
} |
935 |
} |
936 |
|
937 |
/** |
938 |
* timed invokeAll(c) returns results of all completed tasks in c |
939 |
*/ |
940 |
public void testTimedInvokeAll5() throws Throwable { |
941 |
ExecutorService e = new ForkJoinPool(1); |
942 |
try { |
943 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
944 |
l.add(new StringTask()); |
945 |
l.add(new StringTask()); |
946 |
List<Future<String>> futures |
947 |
= e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
948 |
assertEquals(2, futures.size()); |
949 |
for (Future<String> future : futures) |
950 |
assertSame(TEST_STRING, future.get()); |
951 |
} finally { |
952 |
joinPool(e); |
953 |
} |
954 |
} |
955 |
|
956 |
} |