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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 eventually becomes |
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* true, at which time queues are empty, threads are not active, |
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* the task has completed successfully, and construction |
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* parameters continue to hold |
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*/ |
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public void testisQuiescent() throws Exception { |
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ForkJoinPool p = new ForkJoinPool(2); |
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try { |
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assertTrue(p.isQuiescent()); |
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long startTime = System.nanoTime(); |
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FibTask f = new FibTask(20); |
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p.invoke(f); |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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while (! p.isQuiescent()) { |
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if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
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throw new AssertionFailedError("timed out"); |
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assertFalse(p.getAsyncMode()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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Thread.yield(); |
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} |
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|
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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assertTrue(f.isDone()); |
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assertEquals(6765, (int) f.get()); |
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} 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 |
296 |
*/ |
297 |
public void testSubmitForkJoinTask() throws Throwable { |
298 |
ForkJoinPool p = new ForkJoinPool(1); |
299 |
try { |
300 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
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assertEquals(21, (int) f.get()); |
302 |
} 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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* A task submitted after shutdown is rejected |
309 |
*/ |
310 |
public void testSubmitAfterShutdown() { |
311 |
ForkJoinPool p = new ForkJoinPool(1); |
312 |
try { |
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p.shutdown(); |
314 |
assertTrue(p.isShutdown()); |
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try { |
316 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
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shouldThrow(); |
318 |
} catch (RejectedExecutionException success) {} |
319 |
} finally { |
320 |
joinPool(p); |
321 |
} |
322 |
} |
323 |
|
324 |
/** |
325 |
* Pool maintains parallelism when using ManagedBlocker |
326 |
*/ |
327 |
public void testBlockingForkJoinTask() throws Throwable { |
328 |
ForkJoinPool p = new ForkJoinPool(4); |
329 |
try { |
330 |
ReentrantLock lock = new ReentrantLock(); |
331 |
ManagedLocker locker = new ManagedLocker(lock); |
332 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
333 |
p.execute(f); |
334 |
assertEquals(6765, (int) f.get()); |
335 |
} finally { |
336 |
p.shutdownNow(); // don't wait out shutdown |
337 |
} |
338 |
} |
339 |
|
340 |
/** |
341 |
* pollSubmission returns unexecuted submitted task, if present |
342 |
*/ |
343 |
public void testPollSubmission() { |
344 |
final CountDownLatch done = new CountDownLatch(1); |
345 |
SubFJP p = new SubFJP(); |
346 |
try { |
347 |
ForkJoinTask a = p.submit(awaiter(done)); |
348 |
ForkJoinTask b = p.submit(awaiter(done)); |
349 |
ForkJoinTask c = p.submit(awaiter(done)); |
350 |
ForkJoinTask r = p.pollSubmission(); |
351 |
assertTrue(r == a || r == b || r == c); |
352 |
assertFalse(r.isDone()); |
353 |
} finally { |
354 |
done.countDown(); |
355 |
joinPool(p); |
356 |
} |
357 |
} |
358 |
|
359 |
/** |
360 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
361 |
*/ |
362 |
public void testDrainTasksTo() { |
363 |
final CountDownLatch done = new CountDownLatch(1); |
364 |
SubFJP p = new SubFJP(); |
365 |
try { |
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ForkJoinTask a = p.submit(awaiter(done)); |
367 |
ForkJoinTask b = p.submit(awaiter(done)); |
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ForkJoinTask c = p.submit(awaiter(done)); |
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ArrayList<ForkJoinTask> al = new ArrayList(); |
370 |
p.drainTasksTo(al); |
371 |
assertTrue(al.size() > 0); |
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for (ForkJoinTask r : al) { |
373 |
assertTrue(r == a || r == b || r == c); |
374 |
assertFalse(r.isDone()); |
375 |
} |
376 |
} finally { |
377 |
done.countDown(); |
378 |
joinPool(p); |
379 |
} |
380 |
} |
381 |
|
382 |
|
383 |
// FJ Versions of AbstractExecutorService tests |
384 |
|
385 |
/** |
386 |
* execute(runnable) runs it to completion |
387 |
*/ |
388 |
public void testExecuteRunnable() throws Throwable { |
389 |
ExecutorService e = new ForkJoinPool(1); |
390 |
try { |
391 |
TrackedRunnable task = trackedRunnable(SHORT_DELAY_MS); |
392 |
assertFalse(task.isDone()); |
393 |
Future<?> future = e.submit(task); |
394 |
assertNull(future.get()); |
395 |
assertNull(future.get(MEDIUM_DELAY_MS, MILLISECONDS)); |
396 |
assertTrue(task.isDone()); |
397 |
assertTrue(future.isDone()); |
398 |
assertFalse(future.isCancelled()); |
399 |
} finally { |
400 |
joinPool(e); |
401 |
} |
402 |
} |
403 |
|
404 |
|
405 |
/** |
406 |
* Completed submit(callable) returns result |
407 |
*/ |
408 |
public void testSubmitCallable() throws Throwable { |
409 |
ExecutorService e = new ForkJoinPool(1); |
410 |
try { |
411 |
Future<String> future = e.submit(new StringTask()); |
412 |
assertSame(TEST_STRING, future.get()); |
413 |
assertTrue(future.isDone()); |
414 |
assertFalse(future.isCancelled()); |
415 |
} finally { |
416 |
joinPool(e); |
417 |
} |
418 |
} |
419 |
|
420 |
/** |
421 |
* Completed submit(runnable) returns successfully |
422 |
*/ |
423 |
public void testSubmitRunnable() throws Throwable { |
424 |
ExecutorService e = new ForkJoinPool(1); |
425 |
try { |
426 |
Future<?> future = e.submit(new NoOpRunnable()); |
427 |
assertNull(future.get()); |
428 |
assertTrue(future.isDone()); |
429 |
assertFalse(future.isCancelled()); |
430 |
} finally { |
431 |
joinPool(e); |
432 |
} |
433 |
} |
434 |
|
435 |
/** |
436 |
* Completed submit(runnable, result) returns result |
437 |
*/ |
438 |
public void testSubmitRunnable2() throws Throwable { |
439 |
ExecutorService e = new ForkJoinPool(1); |
440 |
try { |
441 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
442 |
assertSame(TEST_STRING, future.get()); |
443 |
assertTrue(future.isDone()); |
444 |
assertFalse(future.isCancelled()); |
445 |
} finally { |
446 |
joinPool(e); |
447 |
} |
448 |
} |
449 |
|
450 |
/** |
451 |
* A submitted privileged action runs to completion |
452 |
*/ |
453 |
public void testSubmitPrivilegedAction() throws Exception { |
454 |
Runnable r = new CheckedRunnable() { |
455 |
public void realRun() throws Exception { |
456 |
ExecutorService e = new ForkJoinPool(1); |
457 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
458 |
public Object run() { |
459 |
return TEST_STRING; |
460 |
}})); |
461 |
|
462 |
assertSame(TEST_STRING, future.get()); |
463 |
}}; |
464 |
|
465 |
runWithPermissions(r, |
466 |
new RuntimePermission("modifyThread")); |
467 |
} |
468 |
|
469 |
/** |
470 |
* A submitted privileged exception action runs to completion |
471 |
*/ |
472 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
473 |
Runnable r = new CheckedRunnable() { |
474 |
public void realRun() throws Exception { |
475 |
ExecutorService e = new ForkJoinPool(1); |
476 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
477 |
public Object run() { |
478 |
return TEST_STRING; |
479 |
}})); |
480 |
|
481 |
assertSame(TEST_STRING, future.get()); |
482 |
}}; |
483 |
|
484 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
485 |
} |
486 |
|
487 |
/** |
488 |
* A submitted failed privileged exception action reports exception |
489 |
*/ |
490 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
491 |
Runnable r = new CheckedRunnable() { |
492 |
public void realRun() throws Exception { |
493 |
ExecutorService e = new ForkJoinPool(1); |
494 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
495 |
public Object run() throws Exception { |
496 |
throw new IndexOutOfBoundsException(); |
497 |
}})); |
498 |
|
499 |
try { |
500 |
future.get(); |
501 |
shouldThrow(); |
502 |
} catch (ExecutionException success) { |
503 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
504 |
}}}; |
505 |
|
506 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
507 |
} |
508 |
|
509 |
/** |
510 |
* execute(null runnable) throws NullPointerException |
511 |
*/ |
512 |
public void testExecuteNullRunnable() { |
513 |
ExecutorService e = new ForkJoinPool(1); |
514 |
try { |
515 |
Future<?> future = e.submit((Runnable) null); |
516 |
shouldThrow(); |
517 |
} catch (NullPointerException success) { |
518 |
} finally { |
519 |
joinPool(e); |
520 |
} |
521 |
} |
522 |
|
523 |
|
524 |
/** |
525 |
* submit(null callable) throws NullPointerException |
526 |
*/ |
527 |
public void testSubmitNullCallable() { |
528 |
ExecutorService e = new ForkJoinPool(1); |
529 |
try { |
530 |
Future<String> future = e.submit((Callable) null); |
531 |
shouldThrow(); |
532 |
} catch (NullPointerException success) { |
533 |
} finally { |
534 |
joinPool(e); |
535 |
} |
536 |
} |
537 |
|
538 |
|
539 |
/** |
540 |
* submit(callable).get() throws InterruptedException if interrupted |
541 |
*/ |
542 |
public void testInterruptedSubmit() throws InterruptedException { |
543 |
final CountDownLatch submitted = new CountDownLatch(1); |
544 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
545 |
final ExecutorService p = new ForkJoinPool(1); |
546 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
547 |
public Void realCall() throws InterruptedException { |
548 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
549 |
return null; |
550 |
}}; |
551 |
try { |
552 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
553 |
public void realRun() throws Exception { |
554 |
Future<Void> future = p.submit(awaiter); |
555 |
submitted.countDown(); |
556 |
future.get(); |
557 |
}}); |
558 |
t.start(); |
559 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
560 |
t.interrupt(); |
561 |
t.join(); |
562 |
} finally { |
563 |
quittingTime.countDown(); |
564 |
joinPool(p); |
565 |
} |
566 |
} |
567 |
|
568 |
/** |
569 |
* get of submit(callable) throws ExecutionException if callable |
570 |
* throws exception |
571 |
*/ |
572 |
public void testSubmitEE() throws Throwable { |
573 |
ForkJoinPool p = new ForkJoinPool(1); |
574 |
try { |
575 |
p.submit(new Callable() { |
576 |
public Object call() { |
577 |
int i = 5/0; |
578 |
return Boolean.TRUE; |
579 |
}}).get(); |
580 |
shouldThrow(); |
581 |
} catch (ExecutionException success) { |
582 |
assertTrue(success.getCause() instanceof ArithmeticException); |
583 |
} finally { |
584 |
joinPool(p); |
585 |
} |
586 |
} |
587 |
|
588 |
/** |
589 |
* invokeAny(null) throws NullPointerException |
590 |
*/ |
591 |
public void testInvokeAny1() throws Throwable { |
592 |
ExecutorService e = new ForkJoinPool(1); |
593 |
try { |
594 |
e.invokeAny(null); |
595 |
shouldThrow(); |
596 |
} catch (NullPointerException success) { |
597 |
} finally { |
598 |
joinPool(e); |
599 |
} |
600 |
} |
601 |
|
602 |
/** |
603 |
* invokeAny(empty collection) throws IllegalArgumentException |
604 |
*/ |
605 |
public void testInvokeAny2() throws Throwable { |
606 |
ExecutorService e = new ForkJoinPool(1); |
607 |
try { |
608 |
e.invokeAny(new ArrayList<Callable<String>>()); |
609 |
shouldThrow(); |
610 |
} catch (IllegalArgumentException success) { |
611 |
} finally { |
612 |
joinPool(e); |
613 |
} |
614 |
} |
615 |
|
616 |
/** |
617 |
* invokeAny(c) throws NullPointerException if c has a single null element |
618 |
*/ |
619 |
public void testInvokeAny3() throws Throwable { |
620 |
ExecutorService e = new ForkJoinPool(1); |
621 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
622 |
l.add(null); |
623 |
try { |
624 |
e.invokeAny(l); |
625 |
shouldThrow(); |
626 |
} catch (NullPointerException success) { |
627 |
} finally { |
628 |
joinPool(e); |
629 |
} |
630 |
} |
631 |
|
632 |
/** |
633 |
* invokeAny(c) throws NullPointerException if c has null elements |
634 |
*/ |
635 |
public void testInvokeAny4() throws Throwable { |
636 |
CountDownLatch latch = new CountDownLatch(1); |
637 |
ExecutorService e = new ForkJoinPool(1); |
638 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
639 |
l.add(latchAwaitingStringTask(latch)); |
640 |
l.add(null); |
641 |
try { |
642 |
e.invokeAny(l); |
643 |
shouldThrow(); |
644 |
} catch (NullPointerException success) { |
645 |
} finally { |
646 |
latch.countDown(); |
647 |
joinPool(e); |
648 |
} |
649 |
} |
650 |
|
651 |
/** |
652 |
* invokeAny(c) throws ExecutionException if no task in c completes |
653 |
*/ |
654 |
public void testInvokeAny5() throws Throwable { |
655 |
ExecutorService e = new ForkJoinPool(1); |
656 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
657 |
l.add(new NPETask()); |
658 |
try { |
659 |
e.invokeAny(l); |
660 |
shouldThrow(); |
661 |
} catch (ExecutionException success) { |
662 |
assertTrue(success.getCause() instanceof NullPointerException); |
663 |
} finally { |
664 |
joinPool(e); |
665 |
} |
666 |
} |
667 |
|
668 |
/** |
669 |
* invokeAny(c) returns result of some task in c if at least one completes |
670 |
*/ |
671 |
public void testInvokeAny6() throws Throwable { |
672 |
ExecutorService e = new ForkJoinPool(1); |
673 |
try { |
674 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
675 |
l.add(new StringTask()); |
676 |
l.add(new StringTask()); |
677 |
String result = e.invokeAny(l); |
678 |
assertSame(TEST_STRING, result); |
679 |
} finally { |
680 |
joinPool(e); |
681 |
} |
682 |
} |
683 |
|
684 |
/** |
685 |
* invokeAll(null) throws NullPointerException |
686 |
*/ |
687 |
public void testInvokeAll1() throws Throwable { |
688 |
ExecutorService e = new ForkJoinPool(1); |
689 |
try { |
690 |
e.invokeAll(null); |
691 |
shouldThrow(); |
692 |
} catch (NullPointerException success) { |
693 |
} finally { |
694 |
joinPool(e); |
695 |
} |
696 |
} |
697 |
|
698 |
/** |
699 |
* invokeAll(empty collection) returns empty collection |
700 |
*/ |
701 |
public void testInvokeAll2() throws InterruptedException { |
702 |
ExecutorService e = new ForkJoinPool(1); |
703 |
try { |
704 |
List<Future<String>> r |
705 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
706 |
assertTrue(r.isEmpty()); |
707 |
} finally { |
708 |
joinPool(e); |
709 |
} |
710 |
} |
711 |
|
712 |
/** |
713 |
* invokeAll(c) throws NullPointerException if c has null elements |
714 |
*/ |
715 |
public void testInvokeAll3() throws InterruptedException { |
716 |
ExecutorService e = new ForkJoinPool(1); |
717 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
718 |
l.add(new StringTask()); |
719 |
l.add(null); |
720 |
try { |
721 |
e.invokeAll(l); |
722 |
shouldThrow(); |
723 |
} catch (NullPointerException success) { |
724 |
} finally { |
725 |
joinPool(e); |
726 |
} |
727 |
} |
728 |
|
729 |
/** |
730 |
* get of returned element of invokeAll(c) throws |
731 |
* ExecutionException on failed task |
732 |
*/ |
733 |
public void testInvokeAll4() throws Throwable { |
734 |
ExecutorService e = new ForkJoinPool(1); |
735 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
736 |
l.add(new NPETask()); |
737 |
List<Future<String>> futures = e.invokeAll(l); |
738 |
assertEquals(1, futures.size()); |
739 |
try { |
740 |
futures.get(0).get(); |
741 |
shouldThrow(); |
742 |
} catch (ExecutionException success) { |
743 |
assertTrue(success.getCause() instanceof NullPointerException); |
744 |
} finally { |
745 |
joinPool(e); |
746 |
} |
747 |
} |
748 |
|
749 |
/** |
750 |
* invokeAll(c) returns results of all completed tasks in c |
751 |
*/ |
752 |
public void testInvokeAll5() throws Throwable { |
753 |
ExecutorService e = new ForkJoinPool(1); |
754 |
try { |
755 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
756 |
l.add(new StringTask()); |
757 |
l.add(new StringTask()); |
758 |
List<Future<String>> futures = e.invokeAll(l); |
759 |
assertEquals(2, futures.size()); |
760 |
for (Future<String> future : futures) |
761 |
assertSame(TEST_STRING, future.get()); |
762 |
} finally { |
763 |
joinPool(e); |
764 |
} |
765 |
} |
766 |
|
767 |
|
768 |
/** |
769 |
* timed invokeAny(null) throws NullPointerException |
770 |
*/ |
771 |
public void testTimedInvokeAny1() throws Throwable { |
772 |
ExecutorService e = new ForkJoinPool(1); |
773 |
try { |
774 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
775 |
shouldThrow(); |
776 |
} catch (NullPointerException success) { |
777 |
} finally { |
778 |
joinPool(e); |
779 |
} |
780 |
} |
781 |
|
782 |
/** |
783 |
* timed invokeAny(null time unit) throws NullPointerException |
784 |
*/ |
785 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
786 |
ExecutorService e = new ForkJoinPool(1); |
787 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
788 |
l.add(new StringTask()); |
789 |
try { |
790 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
791 |
shouldThrow(); |
792 |
} catch (NullPointerException success) { |
793 |
} finally { |
794 |
joinPool(e); |
795 |
} |
796 |
} |
797 |
|
798 |
/** |
799 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
800 |
*/ |
801 |
public void testTimedInvokeAny2() throws Throwable { |
802 |
ExecutorService e = new ForkJoinPool(1); |
803 |
try { |
804 |
e.invokeAny(new ArrayList<Callable<String>>(), |
805 |
MEDIUM_DELAY_MS, MILLISECONDS); |
806 |
shouldThrow(); |
807 |
} catch (IllegalArgumentException success) { |
808 |
} finally { |
809 |
joinPool(e); |
810 |
} |
811 |
} |
812 |
|
813 |
/** |
814 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
815 |
*/ |
816 |
public void testTimedInvokeAny3() throws Throwable { |
817 |
CountDownLatch latch = new CountDownLatch(1); |
818 |
ExecutorService e = new ForkJoinPool(1); |
819 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
820 |
l.add(latchAwaitingStringTask(latch)); |
821 |
l.add(null); |
822 |
try { |
823 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
824 |
shouldThrow(); |
825 |
} catch (NullPointerException success) { |
826 |
} finally { |
827 |
latch.countDown(); |
828 |
joinPool(e); |
829 |
} |
830 |
} |
831 |
|
832 |
/** |
833 |
* timed invokeAny(c) throws ExecutionException if no task completes |
834 |
*/ |
835 |
public void testTimedInvokeAny4() throws Throwable { |
836 |
ExecutorService e = new ForkJoinPool(1); |
837 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
838 |
l.add(new NPETask()); |
839 |
try { |
840 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
841 |
shouldThrow(); |
842 |
} catch (ExecutionException success) { |
843 |
assertTrue(success.getCause() instanceof NullPointerException); |
844 |
} finally { |
845 |
joinPool(e); |
846 |
} |
847 |
} |
848 |
|
849 |
/** |
850 |
* timed invokeAny(c) returns result of some task in c |
851 |
*/ |
852 |
public void testTimedInvokeAny5() throws Throwable { |
853 |
ExecutorService e = new ForkJoinPool(1); |
854 |
try { |
855 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
856 |
l.add(new StringTask()); |
857 |
l.add(new StringTask()); |
858 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
859 |
assertSame(TEST_STRING, result); |
860 |
} finally { |
861 |
joinPool(e); |
862 |
} |
863 |
} |
864 |
|
865 |
/** |
866 |
* timed invokeAll(null) throws NullPointerException |
867 |
*/ |
868 |
public void testTimedInvokeAll1() throws Throwable { |
869 |
ExecutorService e = new ForkJoinPool(1); |
870 |
try { |
871 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
872 |
shouldThrow(); |
873 |
} catch (NullPointerException success) { |
874 |
} finally { |
875 |
joinPool(e); |
876 |
} |
877 |
} |
878 |
|
879 |
/** |
880 |
* timed invokeAll(null time unit) throws NullPointerException |
881 |
*/ |
882 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
883 |
ExecutorService e = new ForkJoinPool(1); |
884 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
885 |
l.add(new StringTask()); |
886 |
try { |
887 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
888 |
shouldThrow(); |
889 |
} catch (NullPointerException success) { |
890 |
} finally { |
891 |
joinPool(e); |
892 |
} |
893 |
} |
894 |
|
895 |
/** |
896 |
* timed invokeAll(empty collection) returns empty collection |
897 |
*/ |
898 |
public void testTimedInvokeAll2() throws InterruptedException { |
899 |
ExecutorService e = new ForkJoinPool(1); |
900 |
try { |
901 |
List<Future<String>> r |
902 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
903 |
MEDIUM_DELAY_MS, MILLISECONDS); |
904 |
assertTrue(r.isEmpty()); |
905 |
} finally { |
906 |
joinPool(e); |
907 |
} |
908 |
} |
909 |
|
910 |
/** |
911 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
912 |
*/ |
913 |
public void testTimedInvokeAll3() throws InterruptedException { |
914 |
ExecutorService e = new ForkJoinPool(1); |
915 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
916 |
l.add(new StringTask()); |
917 |
l.add(null); |
918 |
try { |
919 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
920 |
shouldThrow(); |
921 |
} catch (NullPointerException success) { |
922 |
} finally { |
923 |
joinPool(e); |
924 |
} |
925 |
} |
926 |
|
927 |
/** |
928 |
* get of returned element of invokeAll(c) throws exception on failed task |
929 |
*/ |
930 |
public void testTimedInvokeAll4() throws Throwable { |
931 |
ExecutorService e = new ForkJoinPool(1); |
932 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
933 |
l.add(new NPETask()); |
934 |
List<Future<String>> futures |
935 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
936 |
assertEquals(1, futures.size()); |
937 |
try { |
938 |
futures.get(0).get(); |
939 |
shouldThrow(); |
940 |
} catch (ExecutionException success) { |
941 |
assertTrue(success.getCause() instanceof NullPointerException); |
942 |
} finally { |
943 |
joinPool(e); |
944 |
} |
945 |
} |
946 |
|
947 |
/** |
948 |
* timed invokeAll(c) returns results of all completed tasks in c |
949 |
*/ |
950 |
public void testTimedInvokeAll5() throws Throwable { |
951 |
ExecutorService e = new ForkJoinPool(1); |
952 |
try { |
953 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
954 |
l.add(new StringTask()); |
955 |
l.add(new StringTask()); |
956 |
List<Future<String>> futures |
957 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
958 |
assertEquals(2, futures.size()); |
959 |
for (Future<String> future : futures) |
960 |
assertSame(TEST_STRING, future.get()); |
961 |
} finally { |
962 |
joinPool(e); |
963 |
} |
964 |
} |
965 |
|
966 |
} |