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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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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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|
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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 = new ForkJoinPool(1); |
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try { |
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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 = new ForkJoinPool(1); |
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try { |
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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 = new ForkJoinPool(1); |
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try { |
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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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} 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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MyHandler eh = new MyHandler(); |
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ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(), eh, false); |
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try { |
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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 = new ForkJoinPool(2); |
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try { |
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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 |
273 |
*/ |
274 |
public void testSubmitForkJoinTask() throws Throwable { |
275 |
ForkJoinPool p = new ForkJoinPool(1); |
276 |
try { |
277 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
278 |
int r = f.get(); |
279 |
assertTrue(r == 21); |
280 |
} finally { |
281 |
joinPool(p); |
282 |
} |
283 |
} |
284 |
|
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/** |
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* A task submitted after shutdown is rejected |
287 |
*/ |
288 |
public void testSubmitAfterShutdown() { |
289 |
ForkJoinPool p = new ForkJoinPool(1); |
290 |
try { |
291 |
p.shutdown(); |
292 |
assertTrue(p.isShutdown()); |
293 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
294 |
shouldThrow(); |
295 |
} catch (RejectedExecutionException success) { |
296 |
} finally { |
297 |
joinPool(p); |
298 |
} |
299 |
} |
300 |
|
301 |
/** |
302 |
* Pool maintains parallelism when using ManagedBlocker |
303 |
*/ |
304 |
public void testBlockingForkJoinTask() throws Throwable { |
305 |
ForkJoinPool p = new ForkJoinPool(4); |
306 |
try { |
307 |
ReentrantLock lock = new ReentrantLock(); |
308 |
ManagedLocker locker = new ManagedLocker(lock); |
309 |
ForkJoinTask<Integer> f = new LockingFibTask(30, locker, lock); |
310 |
p.execute(f); |
311 |
int r = f.get(); |
312 |
assertTrue(r == 832040); |
313 |
} finally { |
314 |
p.shutdownNow(); // don't wait out shutdown |
315 |
} |
316 |
} |
317 |
|
318 |
/** |
319 |
* pollSubmission returns unexecuted submitted task, if present |
320 |
*/ |
321 |
public void testPollSubmission() { |
322 |
SubFJP p = new SubFJP(); |
323 |
try { |
324 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
325 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
326 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
327 |
ForkJoinTask r = p.pollSubmission(); |
328 |
assertTrue(r == a || r == b || r == c); |
329 |
assertFalse(r.isDone()); |
330 |
} finally { |
331 |
joinPool(p); |
332 |
} |
333 |
} |
334 |
|
335 |
/** |
336 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
337 |
*/ |
338 |
public void testDrainTasksTo() { |
339 |
SubFJP p = new SubFJP(); |
340 |
try { |
341 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
342 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
343 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
344 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
345 |
p.drainTasksTo(al); |
346 |
assertTrue(al.size() > 0); |
347 |
for (ForkJoinTask r : al) { |
348 |
assertTrue(r == a || r == b || r == c); |
349 |
assertFalse(r.isDone()); |
350 |
} |
351 |
} finally { |
352 |
joinPool(p); |
353 |
} |
354 |
} |
355 |
|
356 |
|
357 |
// FJ Versions of AbstractExecutorService tests |
358 |
|
359 |
/** |
360 |
* execute(runnable) runs it to completion |
361 |
*/ |
362 |
public void testExecuteRunnable() throws Throwable { |
363 |
ExecutorService e = new ForkJoinPool(1); |
364 |
try { |
365 |
TrackedShortRunnable task = new TrackedShortRunnable(); |
366 |
assertFalse(task.done); |
367 |
Future<?> future = e.submit(task); |
368 |
future.get(); |
369 |
assertTrue(task.done); |
370 |
} finally { |
371 |
joinPool(e); |
372 |
} |
373 |
} |
374 |
|
375 |
|
376 |
/** |
377 |
* Completed submit(callable) returns result |
378 |
*/ |
379 |
public void testSubmitCallable() throws Throwable { |
380 |
ExecutorService e = new ForkJoinPool(1); |
381 |
try { |
382 |
Future<String> future = e.submit(new StringTask()); |
383 |
String result = future.get(); |
384 |
assertSame(TEST_STRING, result); |
385 |
} finally { |
386 |
joinPool(e); |
387 |
} |
388 |
} |
389 |
|
390 |
/** |
391 |
* Completed submit(runnable) returns successfully |
392 |
*/ |
393 |
public void testSubmitRunnable() throws Throwable { |
394 |
ExecutorService e = new ForkJoinPool(1); |
395 |
try { |
396 |
Future<?> future = e.submit(new NoOpRunnable()); |
397 |
future.get(); |
398 |
assertTrue(future.isDone()); |
399 |
} finally { |
400 |
joinPool(e); |
401 |
} |
402 |
} |
403 |
|
404 |
/** |
405 |
* Completed submit(runnable, result) returns result |
406 |
*/ |
407 |
public void testSubmitRunnable2() throws Throwable { |
408 |
ExecutorService e = new ForkJoinPool(1); |
409 |
try { |
410 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
411 |
String result = future.get(); |
412 |
assertSame(TEST_STRING, result); |
413 |
} finally { |
414 |
joinPool(e); |
415 |
} |
416 |
} |
417 |
|
418 |
|
419 |
/** |
420 |
* A submitted privileged action to completion |
421 |
*/ |
422 |
public void testSubmitPrivilegedAction() throws Throwable { |
423 |
Policy savedPolicy = null; |
424 |
try { |
425 |
savedPolicy = Policy.getPolicy(); |
426 |
AdjustablePolicy policy = new AdjustablePolicy(); |
427 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
428 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
429 |
Policy.setPolicy(policy); |
430 |
} catch (AccessControlException ok) { |
431 |
return; |
432 |
} |
433 |
|
434 |
try { |
435 |
ExecutorService e = new ForkJoinPool(1); |
436 |
try { |
437 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
438 |
public Object run() { |
439 |
return TEST_STRING; |
440 |
}})); |
441 |
|
442 |
Object result = future.get(); |
443 |
assertSame(TEST_STRING, result); |
444 |
} finally { |
445 |
joinPool(e); |
446 |
} |
447 |
} finally { |
448 |
Policy.setPolicy(savedPolicy); |
449 |
} |
450 |
} |
451 |
|
452 |
/** |
453 |
* A submitted a privileged exception action runs to completion |
454 |
*/ |
455 |
public void testSubmitPrivilegedExceptionAction() throws Throwable { |
456 |
Policy savedPolicy = null; |
457 |
try { |
458 |
savedPolicy = Policy.getPolicy(); |
459 |
AdjustablePolicy policy = new AdjustablePolicy(); |
460 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
461 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
462 |
Policy.setPolicy(policy); |
463 |
} catch (AccessControlException ok) { |
464 |
return; |
465 |
} |
466 |
|
467 |
try { |
468 |
ExecutorService e = new ForkJoinPool(1); |
469 |
try { |
470 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
471 |
public Object run() { |
472 |
return TEST_STRING; |
473 |
}})); |
474 |
|
475 |
Object result = future.get(); |
476 |
assertSame(TEST_STRING, result); |
477 |
} finally { |
478 |
joinPool(e); |
479 |
} |
480 |
} finally { |
481 |
Policy.setPolicy(savedPolicy); |
482 |
} |
483 |
} |
484 |
|
485 |
/** |
486 |
* A submitted failed privileged exception action reports exception |
487 |
*/ |
488 |
public void testSubmitFailedPrivilegedExceptionAction() throws Throwable { |
489 |
Policy savedPolicy = null; |
490 |
try { |
491 |
savedPolicy = Policy.getPolicy(); |
492 |
AdjustablePolicy policy = new AdjustablePolicy(); |
493 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
494 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
495 |
Policy.setPolicy(policy); |
496 |
} catch (AccessControlException ok) { |
497 |
return; |
498 |
} |
499 |
|
500 |
try { |
501 |
ExecutorService e = new ForkJoinPool(1); |
502 |
try { |
503 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
504 |
public Object run() throws Exception { |
505 |
throw new IndexOutOfBoundsException(); |
506 |
}})); |
507 |
|
508 |
Object result = future.get(); |
509 |
shouldThrow(); |
510 |
} catch (ExecutionException success) { |
511 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
512 |
} finally { |
513 |
joinPool(e); |
514 |
} |
515 |
} finally { |
516 |
Policy.setPolicy(savedPolicy); |
517 |
} |
518 |
} |
519 |
|
520 |
/** |
521 |
* execute(null runnable) throws NullPointerException |
522 |
*/ |
523 |
public void testExecuteNullRunnable() { |
524 |
ExecutorService e = new ForkJoinPool(1); |
525 |
try { |
526 |
TrackedShortRunnable task = null; |
527 |
Future<?> future = e.submit(task); |
528 |
shouldThrow(); |
529 |
} catch (NullPointerException success) { |
530 |
} finally { |
531 |
joinPool(e); |
532 |
} |
533 |
} |
534 |
|
535 |
|
536 |
/** |
537 |
* submit(null callable) throws NullPointerException |
538 |
*/ |
539 |
public void testSubmitNullCallable() { |
540 |
ExecutorService e = new ForkJoinPool(1); |
541 |
try { |
542 |
StringTask t = null; |
543 |
Future<String> future = e.submit(t); |
544 |
shouldThrow(); |
545 |
} catch (NullPointerException success) { |
546 |
} finally { |
547 |
joinPool(e); |
548 |
} |
549 |
} |
550 |
|
551 |
|
552 |
/** |
553 |
* Blocking on submit(callable) throws InterruptedException if |
554 |
* caller interrupted. |
555 |
*/ |
556 |
public void testInterruptedSubmit() throws InterruptedException { |
557 |
final ForkJoinPool p = new ForkJoinPool(1); |
558 |
|
559 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
560 |
public void realRun() throws Throwable { |
561 |
p.submit(new CheckedCallable<Object>() { |
562 |
public Object realCall() throws Throwable { |
563 |
try { |
564 |
Thread.sleep(MEDIUM_DELAY_MS); |
565 |
} catch (InterruptedException ok) { |
566 |
} |
567 |
return null; |
568 |
}}).get(); |
569 |
}}); |
570 |
|
571 |
t.start(); |
572 |
Thread.sleep(SHORT_DELAY_MS); |
573 |
t.interrupt(); |
574 |
t.join(); |
575 |
p.shutdownNow(); |
576 |
joinPool(p); |
577 |
} |
578 |
|
579 |
/** |
580 |
* get of submit(callable) throws ExecutionException if callable |
581 |
* throws exception |
582 |
*/ |
583 |
public void testSubmitEE() throws Throwable { |
584 |
ForkJoinPool p = new ForkJoinPool(1); |
585 |
try { |
586 |
p.submit(new Callable() { |
587 |
public Object call() { |
588 |
int i = 5/0; |
589 |
return Boolean.TRUE; |
590 |
}}).get(); |
591 |
shouldThrow(); |
592 |
} catch (ExecutionException success) { |
593 |
assertTrue(success.getCause() instanceof ArithmeticException); |
594 |
} finally { |
595 |
joinPool(p); |
596 |
} |
597 |
} |
598 |
|
599 |
/** |
600 |
* invokeAny(null) throws NullPointerException |
601 |
*/ |
602 |
public void testInvokeAny1() throws Throwable { |
603 |
ExecutorService e = new ForkJoinPool(1); |
604 |
try { |
605 |
e.invokeAny(null); |
606 |
shouldThrow(); |
607 |
} catch (NullPointerException success) { |
608 |
} finally { |
609 |
joinPool(e); |
610 |
} |
611 |
} |
612 |
|
613 |
/** |
614 |
* invokeAny(empty collection) throws IllegalArgumentException |
615 |
*/ |
616 |
public void testInvokeAny2() throws Throwable { |
617 |
ExecutorService e = new ForkJoinPool(1); |
618 |
try { |
619 |
e.invokeAny(new ArrayList<Callable<String>>()); |
620 |
shouldThrow(); |
621 |
} catch (IllegalArgumentException success) { |
622 |
} finally { |
623 |
joinPool(e); |
624 |
} |
625 |
} |
626 |
|
627 |
/** |
628 |
* invokeAny(c) throws NullPointerException if c has a single null element |
629 |
*/ |
630 |
public void testInvokeAny3() throws Throwable { |
631 |
ExecutorService e = new ForkJoinPool(1); |
632 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
633 |
l.add(null); |
634 |
try { |
635 |
e.invokeAny(l); |
636 |
shouldThrow(); |
637 |
} catch (NullPointerException success) { |
638 |
} finally { |
639 |
joinPool(e); |
640 |
} |
641 |
} |
642 |
|
643 |
/** |
644 |
* invokeAny(c) throws NullPointerException if c has null elements |
645 |
*/ |
646 |
public void testInvokeAny4() throws Throwable { |
647 |
CountDownLatch latch = new CountDownLatch(1); |
648 |
ExecutorService e = new ForkJoinPool(1); |
649 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
650 |
l.add(latchAwaitingStringTask(latch)); |
651 |
l.add(null); |
652 |
try { |
653 |
e.invokeAny(l); |
654 |
shouldThrow(); |
655 |
} catch (NullPointerException success) { |
656 |
} finally { |
657 |
latch.countDown(); |
658 |
joinPool(e); |
659 |
} |
660 |
} |
661 |
|
662 |
/** |
663 |
* invokeAny(c) throws ExecutionException if no task in c completes |
664 |
*/ |
665 |
public void testInvokeAny5() throws Throwable { |
666 |
ExecutorService e = new ForkJoinPool(1); |
667 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
668 |
l.add(new NPETask()); |
669 |
try { |
670 |
e.invokeAny(l); |
671 |
shouldThrow(); |
672 |
} catch (ExecutionException success) { |
673 |
assertTrue(success.getCause() instanceof NullPointerException); |
674 |
} finally { |
675 |
joinPool(e); |
676 |
} |
677 |
} |
678 |
|
679 |
/** |
680 |
* invokeAny(c) returns result of some task in c if at least one completes |
681 |
*/ |
682 |
public void testInvokeAny6() throws Throwable { |
683 |
ExecutorService e = new ForkJoinPool(1); |
684 |
try { |
685 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
686 |
l.add(new StringTask()); |
687 |
l.add(new StringTask()); |
688 |
String result = e.invokeAny(l); |
689 |
assertSame(TEST_STRING, result); |
690 |
} finally { |
691 |
joinPool(e); |
692 |
} |
693 |
} |
694 |
|
695 |
/** |
696 |
* invokeAll(null) throws NullPointerException |
697 |
*/ |
698 |
public void testInvokeAll1() throws Throwable { |
699 |
ExecutorService e = new ForkJoinPool(1); |
700 |
try { |
701 |
e.invokeAll(null); |
702 |
shouldThrow(); |
703 |
} catch (NullPointerException success) { |
704 |
} finally { |
705 |
joinPool(e); |
706 |
} |
707 |
} |
708 |
|
709 |
/** |
710 |
* invokeAll(empty collection) returns empty collection |
711 |
*/ |
712 |
public void testInvokeAll2() throws InterruptedException { |
713 |
ExecutorService e = new ForkJoinPool(1); |
714 |
try { |
715 |
List<Future<String>> r |
716 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
717 |
assertTrue(r.isEmpty()); |
718 |
} finally { |
719 |
joinPool(e); |
720 |
} |
721 |
} |
722 |
|
723 |
/** |
724 |
* invokeAll(c) throws NullPointerException if c has null elements |
725 |
*/ |
726 |
public void testInvokeAll3() throws InterruptedException { |
727 |
ExecutorService e = new ForkJoinPool(1); |
728 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
729 |
l.add(new StringTask()); |
730 |
l.add(null); |
731 |
try { |
732 |
e.invokeAll(l); |
733 |
shouldThrow(); |
734 |
} catch (NullPointerException success) { |
735 |
} finally { |
736 |
joinPool(e); |
737 |
} |
738 |
} |
739 |
|
740 |
/** |
741 |
* get of returned element of invokeAll(c) throws |
742 |
* ExecutionException on failed task |
743 |
*/ |
744 |
public void testInvokeAll4() throws Throwable { |
745 |
ExecutorService e = new ForkJoinPool(1); |
746 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
747 |
l.add(new NPETask()); |
748 |
List<Future<String>> futures = e.invokeAll(l); |
749 |
assertEquals(1, futures.size()); |
750 |
try { |
751 |
futures.get(0).get(); |
752 |
shouldThrow(); |
753 |
} catch (ExecutionException success) { |
754 |
assertTrue(success.getCause() instanceof NullPointerException); |
755 |
} finally { |
756 |
joinPool(e); |
757 |
} |
758 |
} |
759 |
|
760 |
/** |
761 |
* invokeAll(c) returns results of all completed tasks in c |
762 |
*/ |
763 |
public void testInvokeAll5() throws Throwable { |
764 |
ExecutorService e = new ForkJoinPool(1); |
765 |
try { |
766 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
767 |
l.add(new StringTask()); |
768 |
l.add(new StringTask()); |
769 |
List<Future<String>> futures = e.invokeAll(l); |
770 |
assertEquals(2, futures.size()); |
771 |
for (Future<String> future : futures) |
772 |
assertSame(TEST_STRING, future.get()); |
773 |
} finally { |
774 |
joinPool(e); |
775 |
} |
776 |
} |
777 |
|
778 |
|
779 |
/** |
780 |
* timed invokeAny(null) throws NullPointerException |
781 |
*/ |
782 |
public void testTimedInvokeAny1() throws Throwable { |
783 |
ExecutorService e = new ForkJoinPool(1); |
784 |
try { |
785 |
e.invokeAny(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
786 |
shouldThrow(); |
787 |
} catch (NullPointerException success) { |
788 |
} finally { |
789 |
joinPool(e); |
790 |
} |
791 |
} |
792 |
|
793 |
/** |
794 |
* timed invokeAny(null time unit) throws NullPointerException |
795 |
*/ |
796 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
797 |
ExecutorService e = new ForkJoinPool(1); |
798 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
799 |
l.add(new StringTask()); |
800 |
try { |
801 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
802 |
shouldThrow(); |
803 |
} catch (NullPointerException success) { |
804 |
} finally { |
805 |
joinPool(e); |
806 |
} |
807 |
} |
808 |
|
809 |
/** |
810 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
811 |
*/ |
812 |
public void testTimedInvokeAny2() throws Throwable { |
813 |
ExecutorService e = new ForkJoinPool(1); |
814 |
try { |
815 |
e.invokeAny(new ArrayList<Callable<String>>(), |
816 |
MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
817 |
shouldThrow(); |
818 |
} catch (IllegalArgumentException success) { |
819 |
} finally { |
820 |
joinPool(e); |
821 |
} |
822 |
} |
823 |
|
824 |
/** |
825 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
826 |
*/ |
827 |
public void testTimedInvokeAny3() throws Throwable { |
828 |
CountDownLatch latch = new CountDownLatch(1); |
829 |
ExecutorService e = new ForkJoinPool(1); |
830 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
831 |
l.add(latchAwaitingStringTask(latch)); |
832 |
l.add(null); |
833 |
try { |
834 |
e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
835 |
shouldThrow(); |
836 |
} catch (NullPointerException success) { |
837 |
} finally { |
838 |
latch.countDown(); |
839 |
joinPool(e); |
840 |
} |
841 |
} |
842 |
|
843 |
/** |
844 |
* timed invokeAny(c) throws ExecutionException if no task completes |
845 |
*/ |
846 |
public void testTimedInvokeAny4() throws Throwable { |
847 |
ExecutorService e = new ForkJoinPool(1); |
848 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
849 |
l.add(new NPETask()); |
850 |
try { |
851 |
e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
852 |
shouldThrow(); |
853 |
} catch (ExecutionException success) { |
854 |
assertTrue(success.getCause() instanceof NullPointerException); |
855 |
} finally { |
856 |
joinPool(e); |
857 |
} |
858 |
} |
859 |
|
860 |
/** |
861 |
* timed invokeAny(c) returns result of some task in c |
862 |
*/ |
863 |
public void testTimedInvokeAny5() throws Throwable { |
864 |
ExecutorService e = new ForkJoinPool(1); |
865 |
try { |
866 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
867 |
l.add(new StringTask()); |
868 |
l.add(new StringTask()); |
869 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
870 |
assertSame(TEST_STRING, result); |
871 |
} finally { |
872 |
joinPool(e); |
873 |
} |
874 |
} |
875 |
|
876 |
/** |
877 |
* timed invokeAll(null) throws NullPointerException |
878 |
*/ |
879 |
public void testTimedInvokeAll1() throws Throwable { |
880 |
ExecutorService e = new ForkJoinPool(1); |
881 |
try { |
882 |
e.invokeAll(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
883 |
shouldThrow(); |
884 |
} catch (NullPointerException success) { |
885 |
} finally { |
886 |
joinPool(e); |
887 |
} |
888 |
} |
889 |
|
890 |
/** |
891 |
* timed invokeAll(null time unit) throws NullPointerException |
892 |
*/ |
893 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
894 |
ExecutorService e = new ForkJoinPool(1); |
895 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
896 |
l.add(new StringTask()); |
897 |
try { |
898 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
899 |
shouldThrow(); |
900 |
} catch (NullPointerException success) { |
901 |
} finally { |
902 |
joinPool(e); |
903 |
} |
904 |
} |
905 |
|
906 |
/** |
907 |
* timed invokeAll(empty collection) returns empty collection |
908 |
*/ |
909 |
public void testTimedInvokeAll2() throws InterruptedException { |
910 |
ExecutorService e = new ForkJoinPool(1); |
911 |
try { |
912 |
List<Future<String>> r |
913 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
914 |
MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
915 |
assertTrue(r.isEmpty()); |
916 |
} finally { |
917 |
joinPool(e); |
918 |
} |
919 |
} |
920 |
|
921 |
/** |
922 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
923 |
*/ |
924 |
public void testTimedInvokeAll3() throws InterruptedException { |
925 |
ExecutorService e = new ForkJoinPool(1); |
926 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
927 |
l.add(new StringTask()); |
928 |
l.add(null); |
929 |
try { |
930 |
e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
931 |
shouldThrow(); |
932 |
} catch (NullPointerException success) { |
933 |
} finally { |
934 |
joinPool(e); |
935 |
} |
936 |
} |
937 |
|
938 |
/** |
939 |
* get of returned element of invokeAll(c) throws exception on failed task |
940 |
*/ |
941 |
public void testTimedInvokeAll4() throws Throwable { |
942 |
ExecutorService e = new ForkJoinPool(1); |
943 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
944 |
l.add(new NPETask()); |
945 |
List<Future<String>> futures |
946 |
= e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
947 |
assertEquals(1, futures.size()); |
948 |
try { |
949 |
futures.get(0).get(); |
950 |
shouldThrow(); |
951 |
} catch (ExecutionException success) { |
952 |
assertTrue(success.getCause() instanceof NullPointerException); |
953 |
} finally { |
954 |
joinPool(e); |
955 |
} |
956 |
} |
957 |
|
958 |
/** |
959 |
* timed invokeAll(c) returns results of all completed tasks in c |
960 |
*/ |
961 |
public void testTimedInvokeAll5() throws Throwable { |
962 |
ExecutorService e = new ForkJoinPool(1); |
963 |
try { |
964 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
965 |
l.add(new StringTask()); |
966 |
l.add(new StringTask()); |
967 |
List<Future<String>> futures |
968 |
= e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
969 |
assertEquals(2, futures.size()); |
970 |
for (Future<String> future : futures) |
971 |
assertSame(TEST_STRING, future.get()); |
972 |
} finally { |
973 |
joinPool(e); |
974 |
} |
975 |
} |
976 |
|
977 |
} |