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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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import junit.framework.*; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.List; |
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import java.util.concurrent.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.RecursiveTask; |
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import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.locks.ReentrantLock; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.security.AccessControlException; |
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import java.security.Policy; |
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import java.security.PrivilegedAction; |
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import java.security.PrivilegedExceptionAction; |
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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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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getStealCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* Constructor throws if size argument is less than zero |
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*/ |
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public void testConstructor1() { |
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try { |
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new ForkJoinPool(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* Constructor throws if factory argument is null |
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*/ |
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public void testConstructor2() { |
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try { |
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new ForkJoinPool(1, null, null, false); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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|
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/** |
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* getParallelism returns size set in constructor |
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*/ |
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public void testGetParallelism() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertEquals(1, p.getParallelism()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* getPoolSize returns number of started workers. |
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*/ |
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public void testGetPoolSize() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertEquals(0, p.getActiveThreadCount()); |
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Future<String> future = p.submit(new StringTask()); |
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assertEquals(1, p.getPoolSize()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
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* |
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* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
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* performs its defined action |
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*/ |
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public void testSetUncaughtExceptionHandler() throws InterruptedException { |
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final CountDownLatch uehInvoked = new CountDownLatch(1); |
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final Thread.UncaughtExceptionHandler eh = |
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new Thread.UncaughtExceptionHandler() { |
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public void uncaughtException(Thread t, Throwable e) { |
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uehInvoked.countDown(); |
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}}; |
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ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(), |
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eh, false); |
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try { |
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assertSame(eh, p.getUncaughtExceptionHandler()); |
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p.execute(new FibTask(8)); |
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assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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} finally { |
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p.shutdownNow(); // failure might have prevented processing task |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* After invoking a single task, isQuiescent 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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assertTrue(p.isQuiescent()); |
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p.invoke(new FibTask(20)); |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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delay(SMALL_DELAY_MS); |
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
275 |
} finally { |
276 |
joinPool(p); |
277 |
} |
278 |
} |
279 |
|
280 |
/** |
281 |
* Completed submit(ForkJoinTask) returns result |
282 |
*/ |
283 |
public void testSubmitForkJoinTask() throws Throwable { |
284 |
ForkJoinPool p = new ForkJoinPool(1); |
285 |
try { |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
287 |
assertEquals(21, (int) f.get()); |
288 |
} finally { |
289 |
joinPool(p); |
290 |
} |
291 |
} |
292 |
|
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/** |
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* A task submitted after shutdown is rejected |
295 |
*/ |
296 |
public void testSubmitAfterShutdown() { |
297 |
ForkJoinPool p = new ForkJoinPool(1); |
298 |
try { |
299 |
p.shutdown(); |
300 |
assertTrue(p.isShutdown()); |
301 |
try { |
302 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
303 |
shouldThrow(); |
304 |
} catch (RejectedExecutionException success) {} |
305 |
} finally { |
306 |
joinPool(p); |
307 |
} |
308 |
} |
309 |
|
310 |
/** |
311 |
* Pool maintains parallelism when using ManagedBlocker |
312 |
*/ |
313 |
public void testBlockingForkJoinTask() throws Throwable { |
314 |
ForkJoinPool p = new ForkJoinPool(4); |
315 |
try { |
316 |
ReentrantLock lock = new ReentrantLock(); |
317 |
ManagedLocker locker = new ManagedLocker(lock); |
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ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
319 |
p.execute(f); |
320 |
assertEquals(6765, (int) f.get()); |
321 |
} finally { |
322 |
p.shutdownNow(); // don't wait out shutdown |
323 |
} |
324 |
} |
325 |
|
326 |
/** |
327 |
* pollSubmission returns unexecuted submitted task, if present |
328 |
*/ |
329 |
public void testPollSubmission() { |
330 |
final CountDownLatch done = new CountDownLatch(1); |
331 |
SubFJP p = new SubFJP(); |
332 |
try { |
333 |
ForkJoinTask a = p.submit(awaiter(done)); |
334 |
ForkJoinTask b = p.submit(awaiter(done)); |
335 |
ForkJoinTask c = p.submit(awaiter(done)); |
336 |
ForkJoinTask r = p.pollSubmission(); |
337 |
assertTrue(r == a || r == b || r == c); |
338 |
assertFalse(r.isDone()); |
339 |
} finally { |
340 |
done.countDown(); |
341 |
joinPool(p); |
342 |
} |
343 |
} |
344 |
|
345 |
/** |
346 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
347 |
*/ |
348 |
public void testDrainTasksTo() { |
349 |
final CountDownLatch done = new CountDownLatch(1); |
350 |
SubFJP p = new SubFJP(); |
351 |
try { |
352 |
ForkJoinTask a = p.submit(awaiter(done)); |
353 |
ForkJoinTask b = p.submit(awaiter(done)); |
354 |
ForkJoinTask c = p.submit(awaiter(done)); |
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 |
done.countDown(); |
364 |
joinPool(p); |
365 |
} |
366 |
} |
367 |
|
368 |
|
369 |
// FJ Versions of AbstractExecutorService tests |
370 |
|
371 |
/** |
372 |
* execute(runnable) runs it to completion |
373 |
*/ |
374 |
public void testExecuteRunnable() throws Throwable { |
375 |
ExecutorService e = new ForkJoinPool(1); |
376 |
try { |
377 |
TrackedRunnable task = trackedRunnable(SHORT_DELAY_MS); |
378 |
assertFalse(task.isDone()); |
379 |
Future<?> future = e.submit(task); |
380 |
assertNull(future.get()); |
381 |
assertNull(future.get(MEDIUM_DELAY_MS, MILLISECONDS)); |
382 |
assertTrue(task.isDone()); |
383 |
assertTrue(future.isDone()); |
384 |
assertFalse(future.isCancelled()); |
385 |
} finally { |
386 |
joinPool(e); |
387 |
} |
388 |
} |
389 |
|
390 |
|
391 |
/** |
392 |
* Completed submit(callable) returns result |
393 |
*/ |
394 |
public void testSubmitCallable() throws Throwable { |
395 |
ExecutorService e = new ForkJoinPool(1); |
396 |
try { |
397 |
Future<String> future = e.submit(new StringTask()); |
398 |
assertSame(TEST_STRING, future.get()); |
399 |
assertTrue(future.isDone()); |
400 |
assertFalse(future.isCancelled()); |
401 |
} finally { |
402 |
joinPool(e); |
403 |
} |
404 |
} |
405 |
|
406 |
/** |
407 |
* Completed submit(runnable) returns successfully |
408 |
*/ |
409 |
public void testSubmitRunnable() throws Throwable { |
410 |
ExecutorService e = new ForkJoinPool(1); |
411 |
try { |
412 |
Future<?> future = e.submit(new NoOpRunnable()); |
413 |
assertNull(future.get()); |
414 |
assertTrue(future.isDone()); |
415 |
assertFalse(future.isCancelled()); |
416 |
} finally { |
417 |
joinPool(e); |
418 |
} |
419 |
} |
420 |
|
421 |
/** |
422 |
* Completed submit(runnable, result) returns result |
423 |
*/ |
424 |
public void testSubmitRunnable2() throws Throwable { |
425 |
ExecutorService e = new ForkJoinPool(1); |
426 |
try { |
427 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
428 |
assertSame(TEST_STRING, future.get()); |
429 |
assertTrue(future.isDone()); |
430 |
assertFalse(future.isCancelled()); |
431 |
} finally { |
432 |
joinPool(e); |
433 |
} |
434 |
} |
435 |
|
436 |
/** |
437 |
* A submitted privileged action runs to completion |
438 |
*/ |
439 |
public void testSubmitPrivilegedAction() throws Exception { |
440 |
Runnable r = new CheckedRunnable() { |
441 |
public void realRun() throws Exception { |
442 |
ExecutorService e = new ForkJoinPool(1); |
443 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
444 |
public Object run() { |
445 |
return TEST_STRING; |
446 |
}})); |
447 |
|
448 |
assertSame(TEST_STRING, future.get()); |
449 |
}}; |
450 |
|
451 |
runWithPermissions(r, |
452 |
new RuntimePermission("modifyThread")); |
453 |
} |
454 |
|
455 |
/** |
456 |
* A submitted privileged exception action runs to completion |
457 |
*/ |
458 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
459 |
Runnable r = new CheckedRunnable() { |
460 |
public void realRun() throws Exception { |
461 |
ExecutorService e = new ForkJoinPool(1); |
462 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
463 |
public Object run() { |
464 |
return TEST_STRING; |
465 |
}})); |
466 |
|
467 |
assertSame(TEST_STRING, future.get()); |
468 |
}}; |
469 |
|
470 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
471 |
} |
472 |
|
473 |
/** |
474 |
* A submitted failed privileged exception action reports exception |
475 |
*/ |
476 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
477 |
Runnable r = new CheckedRunnable() { |
478 |
public void realRun() throws Exception { |
479 |
ExecutorService e = new ForkJoinPool(1); |
480 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
481 |
public Object run() throws Exception { |
482 |
throw new IndexOutOfBoundsException(); |
483 |
}})); |
484 |
|
485 |
try { |
486 |
future.get(); |
487 |
shouldThrow(); |
488 |
} catch (ExecutionException success) { |
489 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
490 |
}}}; |
491 |
|
492 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
493 |
} |
494 |
|
495 |
/** |
496 |
* execute(null runnable) throws NullPointerException |
497 |
*/ |
498 |
public void testExecuteNullRunnable() { |
499 |
ExecutorService e = new ForkJoinPool(1); |
500 |
try { |
501 |
Future<?> future = e.submit((Runnable) null); |
502 |
shouldThrow(); |
503 |
} catch (NullPointerException success) { |
504 |
} finally { |
505 |
joinPool(e); |
506 |
} |
507 |
} |
508 |
|
509 |
|
510 |
/** |
511 |
* submit(null callable) throws NullPointerException |
512 |
*/ |
513 |
public void testSubmitNullCallable() { |
514 |
ExecutorService e = new ForkJoinPool(1); |
515 |
try { |
516 |
Future<String> future = e.submit((Callable) null); |
517 |
shouldThrow(); |
518 |
} catch (NullPointerException success) { |
519 |
} finally { |
520 |
joinPool(e); |
521 |
} |
522 |
} |
523 |
|
524 |
|
525 |
/** |
526 |
* submit(callable).get() throws InterruptedException if interrupted |
527 |
*/ |
528 |
public void testInterruptedSubmit() throws InterruptedException { |
529 |
final CountDownLatch submitted = new CountDownLatch(1); |
530 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
531 |
final ExecutorService p = new ForkJoinPool(1); |
532 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
533 |
public Void realCall() throws InterruptedException { |
534 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
535 |
return null; |
536 |
}}; |
537 |
try { |
538 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
539 |
public void realRun() throws Exception { |
540 |
Future<Void> future = p.submit(awaiter); |
541 |
submitted.countDown(); |
542 |
future.get(); |
543 |
}}); |
544 |
t.start(); |
545 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
546 |
t.interrupt(); |
547 |
t.join(); |
548 |
} finally { |
549 |
quittingTime.countDown(); |
550 |
joinPool(p); |
551 |
} |
552 |
} |
553 |
|
554 |
/** |
555 |
* get of submit(callable) throws ExecutionException if callable |
556 |
* throws exception |
557 |
*/ |
558 |
public void testSubmitEE() throws Throwable { |
559 |
ForkJoinPool p = new ForkJoinPool(1); |
560 |
try { |
561 |
p.submit(new Callable() { |
562 |
public Object call() { |
563 |
int i = 5/0; |
564 |
return Boolean.TRUE; |
565 |
}}).get(); |
566 |
shouldThrow(); |
567 |
} catch (ExecutionException success) { |
568 |
assertTrue(success.getCause() instanceof ArithmeticException); |
569 |
} finally { |
570 |
joinPool(p); |
571 |
} |
572 |
} |
573 |
|
574 |
/** |
575 |
* invokeAny(null) throws NullPointerException |
576 |
*/ |
577 |
public void testInvokeAny1() throws Throwable { |
578 |
ExecutorService e = new ForkJoinPool(1); |
579 |
try { |
580 |
e.invokeAny(null); |
581 |
shouldThrow(); |
582 |
} catch (NullPointerException success) { |
583 |
} finally { |
584 |
joinPool(e); |
585 |
} |
586 |
} |
587 |
|
588 |
/** |
589 |
* invokeAny(empty collection) throws IllegalArgumentException |
590 |
*/ |
591 |
public void testInvokeAny2() throws Throwable { |
592 |
ExecutorService e = new ForkJoinPool(1); |
593 |
try { |
594 |
e.invokeAny(new ArrayList<Callable<String>>()); |
595 |
shouldThrow(); |
596 |
} catch (IllegalArgumentException success) { |
597 |
} finally { |
598 |
joinPool(e); |
599 |
} |
600 |
} |
601 |
|
602 |
/** |
603 |
* invokeAny(c) throws NullPointerException if c has a single null element |
604 |
*/ |
605 |
public void testInvokeAny3() throws Throwable { |
606 |
ExecutorService e = new ForkJoinPool(1); |
607 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
608 |
l.add(null); |
609 |
try { |
610 |
e.invokeAny(l); |
611 |
shouldThrow(); |
612 |
} catch (NullPointerException success) { |
613 |
} finally { |
614 |
joinPool(e); |
615 |
} |
616 |
} |
617 |
|
618 |
/** |
619 |
* invokeAny(c) throws NullPointerException if c has null elements |
620 |
*/ |
621 |
public void testInvokeAny4() throws Throwable { |
622 |
CountDownLatch latch = new CountDownLatch(1); |
623 |
ExecutorService e = new ForkJoinPool(1); |
624 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
625 |
l.add(latchAwaitingStringTask(latch)); |
626 |
l.add(null); |
627 |
try { |
628 |
e.invokeAny(l); |
629 |
shouldThrow(); |
630 |
} catch (NullPointerException success) { |
631 |
} finally { |
632 |
latch.countDown(); |
633 |
joinPool(e); |
634 |
} |
635 |
} |
636 |
|
637 |
/** |
638 |
* invokeAny(c) throws ExecutionException if no task in c completes |
639 |
*/ |
640 |
public void testInvokeAny5() throws Throwable { |
641 |
ExecutorService e = new ForkJoinPool(1); |
642 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
643 |
l.add(new NPETask()); |
644 |
try { |
645 |
e.invokeAny(l); |
646 |
shouldThrow(); |
647 |
} catch (ExecutionException success) { |
648 |
assertTrue(success.getCause() instanceof NullPointerException); |
649 |
} finally { |
650 |
joinPool(e); |
651 |
} |
652 |
} |
653 |
|
654 |
/** |
655 |
* invokeAny(c) returns result of some task in c if at least one completes |
656 |
*/ |
657 |
public void testInvokeAny6() throws Throwable { |
658 |
ExecutorService e = new ForkJoinPool(1); |
659 |
try { |
660 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
661 |
l.add(new StringTask()); |
662 |
l.add(new StringTask()); |
663 |
String result = e.invokeAny(l); |
664 |
assertSame(TEST_STRING, result); |
665 |
} finally { |
666 |
joinPool(e); |
667 |
} |
668 |
} |
669 |
|
670 |
/** |
671 |
* invokeAll(null) throws NullPointerException |
672 |
*/ |
673 |
public void testInvokeAll1() throws Throwable { |
674 |
ExecutorService e = new ForkJoinPool(1); |
675 |
try { |
676 |
e.invokeAll(null); |
677 |
shouldThrow(); |
678 |
} catch (NullPointerException success) { |
679 |
} finally { |
680 |
joinPool(e); |
681 |
} |
682 |
} |
683 |
|
684 |
/** |
685 |
* invokeAll(empty collection) returns empty collection |
686 |
*/ |
687 |
public void testInvokeAll2() throws InterruptedException { |
688 |
ExecutorService e = new ForkJoinPool(1); |
689 |
try { |
690 |
List<Future<String>> r |
691 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
692 |
assertTrue(r.isEmpty()); |
693 |
} finally { |
694 |
joinPool(e); |
695 |
} |
696 |
} |
697 |
|
698 |
/** |
699 |
* invokeAll(c) throws NullPointerException if c has null elements |
700 |
*/ |
701 |
public void testInvokeAll3() throws InterruptedException { |
702 |
ExecutorService e = new ForkJoinPool(1); |
703 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
704 |
l.add(new StringTask()); |
705 |
l.add(null); |
706 |
try { |
707 |
e.invokeAll(l); |
708 |
shouldThrow(); |
709 |
} catch (NullPointerException success) { |
710 |
} finally { |
711 |
joinPool(e); |
712 |
} |
713 |
} |
714 |
|
715 |
/** |
716 |
* get of returned element of invokeAll(c) throws |
717 |
* ExecutionException on failed task |
718 |
*/ |
719 |
public void testInvokeAll4() throws Throwable { |
720 |
ExecutorService e = new ForkJoinPool(1); |
721 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
722 |
l.add(new NPETask()); |
723 |
List<Future<String>> futures = e.invokeAll(l); |
724 |
assertEquals(1, futures.size()); |
725 |
try { |
726 |
futures.get(0).get(); |
727 |
shouldThrow(); |
728 |
} catch (ExecutionException success) { |
729 |
assertTrue(success.getCause() instanceof NullPointerException); |
730 |
} finally { |
731 |
joinPool(e); |
732 |
} |
733 |
} |
734 |
|
735 |
/** |
736 |
* invokeAll(c) returns results of all completed tasks in c |
737 |
*/ |
738 |
public void testInvokeAll5() throws Throwable { |
739 |
ExecutorService e = new ForkJoinPool(1); |
740 |
try { |
741 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
742 |
l.add(new StringTask()); |
743 |
l.add(new StringTask()); |
744 |
List<Future<String>> futures = e.invokeAll(l); |
745 |
assertEquals(2, futures.size()); |
746 |
for (Future<String> future : futures) |
747 |
assertSame(TEST_STRING, future.get()); |
748 |
} finally { |
749 |
joinPool(e); |
750 |
} |
751 |
} |
752 |
|
753 |
|
754 |
/** |
755 |
* timed invokeAny(null) throws NullPointerException |
756 |
*/ |
757 |
public void testTimedInvokeAny1() throws Throwable { |
758 |
ExecutorService e = new ForkJoinPool(1); |
759 |
try { |
760 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
761 |
shouldThrow(); |
762 |
} catch (NullPointerException success) { |
763 |
} finally { |
764 |
joinPool(e); |
765 |
} |
766 |
} |
767 |
|
768 |
/** |
769 |
* timed invokeAny(null time unit) throws NullPointerException |
770 |
*/ |
771 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
772 |
ExecutorService e = new ForkJoinPool(1); |
773 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
774 |
l.add(new StringTask()); |
775 |
try { |
776 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
777 |
shouldThrow(); |
778 |
} catch (NullPointerException success) { |
779 |
} finally { |
780 |
joinPool(e); |
781 |
} |
782 |
} |
783 |
|
784 |
/** |
785 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
786 |
*/ |
787 |
public void testTimedInvokeAny2() throws Throwable { |
788 |
ExecutorService e = new ForkJoinPool(1); |
789 |
try { |
790 |
e.invokeAny(new ArrayList<Callable<String>>(), |
791 |
MEDIUM_DELAY_MS, MILLISECONDS); |
792 |
shouldThrow(); |
793 |
} catch (IllegalArgumentException success) { |
794 |
} finally { |
795 |
joinPool(e); |
796 |
} |
797 |
} |
798 |
|
799 |
/** |
800 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
801 |
*/ |
802 |
public void testTimedInvokeAny3() throws Throwable { |
803 |
CountDownLatch latch = new CountDownLatch(1); |
804 |
ExecutorService e = new ForkJoinPool(1); |
805 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
806 |
l.add(latchAwaitingStringTask(latch)); |
807 |
l.add(null); |
808 |
try { |
809 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
810 |
shouldThrow(); |
811 |
} catch (NullPointerException success) { |
812 |
} finally { |
813 |
latch.countDown(); |
814 |
joinPool(e); |
815 |
} |
816 |
} |
817 |
|
818 |
/** |
819 |
* timed invokeAny(c) throws ExecutionException if no task completes |
820 |
*/ |
821 |
public void testTimedInvokeAny4() throws Throwable { |
822 |
ExecutorService e = new ForkJoinPool(1); |
823 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
824 |
l.add(new NPETask()); |
825 |
try { |
826 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
827 |
shouldThrow(); |
828 |
} catch (ExecutionException success) { |
829 |
assertTrue(success.getCause() instanceof NullPointerException); |
830 |
} finally { |
831 |
joinPool(e); |
832 |
} |
833 |
} |
834 |
|
835 |
/** |
836 |
* timed invokeAny(c) returns result of some task in c |
837 |
*/ |
838 |
public void testTimedInvokeAny5() throws Throwable { |
839 |
ExecutorService e = new ForkJoinPool(1); |
840 |
try { |
841 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
842 |
l.add(new StringTask()); |
843 |
l.add(new StringTask()); |
844 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
845 |
assertSame(TEST_STRING, result); |
846 |
} finally { |
847 |
joinPool(e); |
848 |
} |
849 |
} |
850 |
|
851 |
/** |
852 |
* timed invokeAll(null) throws NullPointerException |
853 |
*/ |
854 |
public void testTimedInvokeAll1() throws Throwable { |
855 |
ExecutorService e = new ForkJoinPool(1); |
856 |
try { |
857 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
858 |
shouldThrow(); |
859 |
} catch (NullPointerException success) { |
860 |
} finally { |
861 |
joinPool(e); |
862 |
} |
863 |
} |
864 |
|
865 |
/** |
866 |
* timed invokeAll(null time unit) throws NullPointerException |
867 |
*/ |
868 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
869 |
ExecutorService e = new ForkJoinPool(1); |
870 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
871 |
l.add(new StringTask()); |
872 |
try { |
873 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
874 |
shouldThrow(); |
875 |
} catch (NullPointerException success) { |
876 |
} finally { |
877 |
joinPool(e); |
878 |
} |
879 |
} |
880 |
|
881 |
/** |
882 |
* timed invokeAll(empty collection) returns empty collection |
883 |
*/ |
884 |
public void testTimedInvokeAll2() throws InterruptedException { |
885 |
ExecutorService e = new ForkJoinPool(1); |
886 |
try { |
887 |
List<Future<String>> r |
888 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
889 |
MEDIUM_DELAY_MS, MILLISECONDS); |
890 |
assertTrue(r.isEmpty()); |
891 |
} finally { |
892 |
joinPool(e); |
893 |
} |
894 |
} |
895 |
|
896 |
/** |
897 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
898 |
*/ |
899 |
public void testTimedInvokeAll3() throws InterruptedException { |
900 |
ExecutorService e = new ForkJoinPool(1); |
901 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
902 |
l.add(new StringTask()); |
903 |
l.add(null); |
904 |
try { |
905 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
906 |
shouldThrow(); |
907 |
} catch (NullPointerException success) { |
908 |
} finally { |
909 |
joinPool(e); |
910 |
} |
911 |
} |
912 |
|
913 |
/** |
914 |
* get of returned element of invokeAll(c) throws exception on failed task |
915 |
*/ |
916 |
public void testTimedInvokeAll4() throws Throwable { |
917 |
ExecutorService e = new ForkJoinPool(1); |
918 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
919 |
l.add(new NPETask()); |
920 |
List<Future<String>> futures |
921 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
922 |
assertEquals(1, futures.size()); |
923 |
try { |
924 |
futures.get(0).get(); |
925 |
shouldThrow(); |
926 |
} catch (ExecutionException success) { |
927 |
assertTrue(success.getCause() instanceof NullPointerException); |
928 |
} finally { |
929 |
joinPool(e); |
930 |
} |
931 |
} |
932 |
|
933 |
/** |
934 |
* timed invokeAll(c) returns results of all completed tasks in c |
935 |
*/ |
936 |
public void testTimedInvokeAll5() 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 |
List<Future<String>> futures |
943 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
944 |
assertEquals(2, futures.size()); |
945 |
for (Future<String> future : futures) |
946 |
assertSame(TEST_STRING, future.get()); |
947 |
} finally { |
948 |
joinPool(e); |
949 |
} |
950 |
} |
951 |
|
952 |
} |