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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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*/ |
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|
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.util.concurrent.locks.*; |
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import java.security.*; |
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|
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public class ForkJoinPoolTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(ForkJoinPoolTest.class); |
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} |
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|
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/** |
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* Testing coverage notes: |
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* |
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* 1. shutdown and related methods are tested via super.joinPool. |
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* |
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* 2. newTaskFor and adapters are tested in submit/invoke tests |
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* |
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* 3. We cannot portably test monitoring methods such as |
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* getStealCount() since they rely ultimately on random task |
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* stealing that may cause tasks not to be stolen/propagated |
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* across threads, especially on uniprocessors. |
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* |
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* 4. There are no independently testable ForkJoinWorkerThread |
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* methods, but they are covered here and in task tests. |
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*/ |
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|
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// Some classes to test extension and factory methods |
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|
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static class MyHandler implements Thread.UncaughtExceptionHandler { |
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int catches = 0; |
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public void uncaughtException(Thread t, Throwable e) { |
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++catches; |
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} |
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} |
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|
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// to test handlers |
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static class FailingFJWSubclass extends ForkJoinWorkerThread { |
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public FailingFJWSubclass(ForkJoinPool p) { super(p) ; } |
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protected void onStart() { throw new Error(); } |
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} |
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|
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static class FailingThreadFactory |
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implements ForkJoinPool.ForkJoinWorkerThreadFactory { |
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int calls = 0; |
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public ForkJoinWorkerThread newThread(ForkJoinPool p) { |
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if (++calls > 1) return null; |
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return new FailingFJWSubclass(p); |
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} |
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} |
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|
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static class SubFJP extends ForkJoinPool { // to expose protected |
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SubFJP() { super(1); } |
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public int drainTasksTo(Collection<? super ForkJoinTask<?>> c) { |
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return super.drainTasksTo(c); |
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} |
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public ForkJoinTask<?> pollSubmission() { |
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return super.pollSubmission(); |
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} |
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} |
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|
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static class ManagedLocker implements ForkJoinPool.ManagedBlocker { |
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final ReentrantLock lock; |
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boolean hasLock = false; |
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ManagedLocker(ReentrantLock lock) { this.lock = lock; } |
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public boolean block() { |
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if (!hasLock) |
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lock.lock(); |
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return true; |
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} |
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public boolean isReleasable() { |
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return hasLock || (hasLock = lock.tryLock()); |
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} |
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} |
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|
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// A simple recursive task for testing |
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static final class FibTask extends RecursiveTask<Integer> { |
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final int number; |
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FibTask(int n) { number = n; } |
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public Integer compute() { |
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int n = number; |
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if (n <= 1) |
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return n; |
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FibTask f1 = new FibTask(n - 1); |
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f1.fork(); |
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return (new FibTask(n - 2)).compute() + f1.join(); |
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} |
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} |
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|
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// A failing task for testing |
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static final class FailingTask extends ForkJoinTask<Void> { |
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public final Void getRawResult() { return null; } |
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protected final void setRawResult(Void mustBeNull) { } |
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protected final boolean exec() { throw new Error(); } |
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FailingTask() {} |
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} |
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|
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// Fib needlessly using locking to test ManagedBlockers |
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static final class LockingFibTask extends RecursiveTask<Integer> { |
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final int number; |
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final ManagedLocker locker; |
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final ReentrantLock lock; |
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LockingFibTask(int n, ManagedLocker locker, ReentrantLock lock) { |
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number = n; |
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this.locker = locker; |
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this.lock = lock; |
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} |
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public Integer compute() { |
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int n; |
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LockingFibTask f1 = null; |
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LockingFibTask f2 = null; |
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locker.block(); |
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n = number; |
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if (n > 1) { |
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f1 = new LockingFibTask(n - 1, locker, lock); |
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f2 = new LockingFibTask(n - 2, locker, lock); |
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} |
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lock.unlock(); |
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if (n <= 1) |
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return n; |
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else { |
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f1.fork(); |
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return f2.compute() + f1.join(); |
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} |
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} |
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} |
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|
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/** |
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* Successfully constructed pool reports default factory, |
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* parallelism and async mode policies, no active threads or |
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* tasks, and quiescent running state. |
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*/ |
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public void testDefaultInitialState() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getFactory() == |
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ForkJoinPool.defaultForkJoinWorkerThreadFactory); |
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assertTrue(p.isQuiescent()); |
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assertTrue(p.getMaintainsParallelism()); |
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assertFalse(p.getAsyncMode()); |
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assertTrue(p.getActiveThreadCount() == 0); |
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assertTrue(p.getStealCount() == 0); |
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assertTrue(p.getQueuedTaskCount() == 0); |
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assertTrue(p.getQueuedSubmissionCount() == 0); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* Constructor throws if size argument is less than zero |
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*/ |
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public void testConstructor1() { |
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try { |
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new ForkJoinPool(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* Constructor throws if factory argument is null |
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*/ |
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public void testConstructor2() { |
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try { |
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new ForkJoinPool(1, null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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|
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/** |
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* getParallelism returns size set in constructor |
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*/ |
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public void testGetParallelism() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getParallelism() == 1); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* setParallelism changes reported parallelism level. |
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*/ |
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public void testSetParallelism() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getParallelism() == 1); |
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p.setParallelism(2); |
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assertTrue(p.getParallelism() == 2); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* setParallelism with argument <= 0 throws exception |
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*/ |
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public void testSetParallelism2() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getParallelism() == 1); |
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p.setParallelism(-2); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) { |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* getPoolSize returns number of started workers. |
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*/ |
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public void testGetPoolSize() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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assertTrue(p.getActiveThreadCount() == 0); |
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Future<String> future = p.submit(new StringTask()); |
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assertTrue(p.getPoolSize() == 1); |
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|
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* setMaximumPoolSize changes size reported by getMaximumPoolSize. |
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*/ |
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public void testSetMaximumPoolSize() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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p.setMaximumPoolSize(2); |
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assertTrue(p.getMaximumPoolSize() == 2); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* setMaximumPoolSize with argument <= 0 throws exception |
263 |
*/ |
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public void testSetMaximumPoolSize2() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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p.setMaximumPoolSize(-2); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) { |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* setMaintainsParallelism changes policy reported by |
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* getMaintainsParallelism. |
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*/ |
280 |
public void testSetMaintainsParallelism() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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p.setMaintainsParallelism(false); |
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assertFalse(p.getMaintainsParallelism()); |
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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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* setAsyncMode changes policy reported by |
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* getAsyncMode. |
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*/ |
295 |
public void testSetAsyncMode() { |
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ForkJoinPool p = null; |
297 |
try { |
298 |
p = new ForkJoinPool(1); |
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p.setAsyncMode(true); |
300 |
assertTrue(p.getAsyncMode()); |
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} finally { |
302 |
joinPool(p); |
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} |
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} |
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|
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/** |
307 |
* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
308 |
* |
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* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
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* performs its defined action |
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*/ |
312 |
public void testSetUncaughtExceptionHandler() throws InterruptedException { |
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ForkJoinPool p = null; |
314 |
try { |
315 |
p = new ForkJoinPool(1, new FailingThreadFactory()); |
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MyHandler eh = new MyHandler(); |
317 |
p.setUncaughtExceptionHandler(eh); |
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assertEquals(eh, p.getUncaughtExceptionHandler()); |
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p.execute(new FailingTask()); |
320 |
Thread.sleep(MEDIUM_DELAY_MS); |
321 |
assertTrue(eh.catches > 0); |
322 |
} finally { |
323 |
p.shutdownNow(); |
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joinPool(p); |
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} |
326 |
} |
327 |
|
328 |
/** |
329 |
* setUncaughtExceptionHandler of null removes handler |
330 |
*/ |
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public void testSetUncaughtExceptionHandler2() { |
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ForkJoinPool p = null; |
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try { |
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p = new ForkJoinPool(1); |
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p.setUncaughtExceptionHandler(null); |
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assertNull(p.getUncaughtExceptionHandler()); |
337 |
} finally { |
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joinPool(p); |
339 |
} |
340 |
} |
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|
342 |
|
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/** |
344 |
* After invoking a single task, isQuiescent is true, |
345 |
* queues are empty, threads are not active, and |
346 |
* construction parameters continue to hold |
347 |
*/ |
348 |
public void testisQuiescent() throws InterruptedException { |
349 |
ForkJoinPool p = null; |
350 |
try { |
351 |
p = new ForkJoinPool(2); |
352 |
p.invoke(new FibTask(20)); |
353 |
assertTrue(p.getFactory() == |
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ForkJoinPool.defaultForkJoinWorkerThreadFactory); |
355 |
Thread.sleep(MEDIUM_DELAY_MS); |
356 |
assertTrue(p.isQuiescent()); |
357 |
assertTrue(p.getMaintainsParallelism()); |
358 |
assertFalse(p.getAsyncMode()); |
359 |
assertTrue(p.getActiveThreadCount() == 0); |
360 |
assertTrue(p.getQueuedTaskCount() == 0); |
361 |
assertTrue(p.getQueuedSubmissionCount() == 0); |
362 |
assertFalse(p.hasQueuedSubmissions()); |
363 |
assertFalse(p.isShutdown()); |
364 |
assertFalse(p.isTerminating()); |
365 |
assertFalse(p.isTerminated()); |
366 |
} finally { |
367 |
joinPool(p); |
368 |
} |
369 |
} |
370 |
|
371 |
/** |
372 |
* Completed submit(ForkJoinTask) returns result |
373 |
*/ |
374 |
public void testSubmitForkJoinTask() throws Throwable { |
375 |
ForkJoinPool p = null; |
376 |
try { |
377 |
p = new ForkJoinPool(1); |
378 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
379 |
int r = f.get(); |
380 |
assertTrue(r == 21); |
381 |
} finally { |
382 |
joinPool(p); |
383 |
} |
384 |
} |
385 |
|
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/** |
387 |
* A task submitted after shutdown is rejected |
388 |
*/ |
389 |
public void testSubmitAfterShutdown() { |
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ForkJoinPool p = null; |
391 |
try { |
392 |
p = new ForkJoinPool(1); |
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p.shutdown(); |
394 |
assertTrue(p.isShutdown()); |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
396 |
shouldThrow(); |
397 |
} catch (RejectedExecutionException success) { |
398 |
} finally { |
399 |
joinPool(p); |
400 |
} |
401 |
} |
402 |
|
403 |
/** |
404 |
* Pool maintains parallelism when using ManagedBlocker |
405 |
*/ |
406 |
public void testBlockingForkJoinTask() throws Throwable { |
407 |
ForkJoinPool p = null; |
408 |
try { |
409 |
p = new ForkJoinPool(4); |
410 |
ReentrantLock lock = new ReentrantLock(); |
411 |
ManagedLocker locker = new ManagedLocker(lock); |
412 |
ForkJoinTask<Integer> f = new LockingFibTask(30, locker, lock); |
413 |
p.execute(f); |
414 |
assertTrue(p.getPoolSize() >= 4); |
415 |
int r = f.get(); |
416 |
assertTrue(r == 832040); |
417 |
} finally { |
418 |
p.shutdownNow(); // don't wait out shutdown |
419 |
} |
420 |
} |
421 |
|
422 |
/** |
423 |
* pollSubmission returns unexecuted submitted task, if present |
424 |
*/ |
425 |
public void testPollSubmission() { |
426 |
SubFJP p = null; |
427 |
try { |
428 |
p = new SubFJP(); |
429 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
430 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
431 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
432 |
ForkJoinTask r = p.pollSubmission(); |
433 |
assertTrue(r == a || r == b || r == c); |
434 |
assertFalse(r.isDone()); |
435 |
} finally { |
436 |
joinPool(p); |
437 |
} |
438 |
} |
439 |
|
440 |
/** |
441 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
442 |
*/ |
443 |
public void testDrainTasksTo() { |
444 |
SubFJP p = null; |
445 |
try { |
446 |
p = new SubFJP(); |
447 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
448 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
449 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
450 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
451 |
p.drainTasksTo(al); |
452 |
assertTrue(al.size() > 0); |
453 |
for (ForkJoinTask r : al) { |
454 |
assertTrue(r == a || r == b || r == c); |
455 |
assertFalse(r.isDone()); |
456 |
} |
457 |
} finally { |
458 |
joinPool(p); |
459 |
} |
460 |
} |
461 |
|
462 |
|
463 |
// FJ Versions of AbstractExecutorService tests |
464 |
|
465 |
/** |
466 |
* execute(runnable) runs it to completion |
467 |
*/ |
468 |
public void testExecuteRunnable() throws Throwable { |
469 |
ExecutorService e = new ForkJoinPool(1); |
470 |
TrackedShortRunnable task = new TrackedShortRunnable(); |
471 |
assertFalse(task.done); |
472 |
Future<?> future = e.submit(task); |
473 |
future.get(); |
474 |
assertTrue(task.done); |
475 |
} |
476 |
|
477 |
|
478 |
/** |
479 |
* Completed submit(callable) returns result |
480 |
*/ |
481 |
public void testSubmitCallable() throws Throwable { |
482 |
ExecutorService e = new ForkJoinPool(1); |
483 |
Future<String> future = e.submit(new StringTask()); |
484 |
String result = future.get(); |
485 |
assertSame(TEST_STRING, result); |
486 |
} |
487 |
|
488 |
/** |
489 |
* Completed submit(runnable) returns successfully |
490 |
*/ |
491 |
public void testSubmitRunnable() throws Throwable { |
492 |
ExecutorService e = new ForkJoinPool(1); |
493 |
Future<?> future = e.submit(new NoOpRunnable()); |
494 |
future.get(); |
495 |
assertTrue(future.isDone()); |
496 |
} |
497 |
|
498 |
/** |
499 |
* Completed submit(runnable, result) returns result |
500 |
*/ |
501 |
public void testSubmitRunnable2() throws Throwable { |
502 |
ExecutorService e = new ForkJoinPool(1); |
503 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
504 |
String result = future.get(); |
505 |
assertSame(TEST_STRING, result); |
506 |
} |
507 |
|
508 |
/** |
509 |
* A submitted privileged action runs to completion |
510 |
*/ |
511 |
public void testSubmitPrivilegedAction() throws Throwable { |
512 |
Runnable r = new CheckedRunnable() { |
513 |
public void realRun() throws Exception { |
514 |
ExecutorService e = new ForkJoinPool(1); |
515 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
516 |
public Object run() { |
517 |
return TEST_STRING; |
518 |
}})); |
519 |
|
520 |
Object result = future.get(); |
521 |
assertSame(TEST_STRING, result); |
522 |
}}; |
523 |
|
524 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
525 |
} |
526 |
|
527 |
/** |
528 |
* A submitted privileged exception action runs to completion |
529 |
*/ |
530 |
public void testSubmitPrivilegedExceptionAction() throws Throwable { |
531 |
Runnable r = new CheckedRunnable() { |
532 |
public void realRun() throws Exception { |
533 |
ExecutorService e = new ForkJoinPool(1); |
534 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
535 |
public Object run() { |
536 |
return TEST_STRING; |
537 |
}})); |
538 |
|
539 |
Object result = future.get(); |
540 |
assertSame(TEST_STRING, result); |
541 |
}}; |
542 |
|
543 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
544 |
} |
545 |
|
546 |
/** |
547 |
* A submitted failed privileged exception action reports exception |
548 |
*/ |
549 |
public void testSubmitFailedPrivilegedExceptionAction() throws Throwable { |
550 |
Runnable r = new CheckedRunnable() { |
551 |
public void realRun() throws Exception { |
552 |
ExecutorService e = new ForkJoinPool(1); |
553 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
554 |
public Object run() throws Exception { |
555 |
throw new IndexOutOfBoundsException(); |
556 |
}})); |
557 |
|
558 |
try { |
559 |
Object result = future.get(); |
560 |
shouldThrow(); |
561 |
} catch (ExecutionException success) { |
562 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
563 |
}}}; |
564 |
|
565 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
566 |
} |
567 |
|
568 |
/** |
569 |
* execute(null runnable) throws NullPointerException |
570 |
*/ |
571 |
public void testExecuteNullRunnable() { |
572 |
try { |
573 |
ExecutorService e = new ForkJoinPool(1); |
574 |
TrackedShortRunnable task = null; |
575 |
Future<?> future = e.submit(task); |
576 |
shouldThrow(); |
577 |
} catch (NullPointerException success) {} |
578 |
} |
579 |
|
580 |
|
581 |
/** |
582 |
* submit(null callable) throws NullPointerException |
583 |
*/ |
584 |
public void testSubmitNullCallable() { |
585 |
try { |
586 |
ExecutorService e = new ForkJoinPool(1); |
587 |
StringTask t = null; |
588 |
Future<String> future = e.submit(t); |
589 |
shouldThrow(); |
590 |
} catch (NullPointerException success) {} |
591 |
} |
592 |
|
593 |
|
594 |
/** |
595 |
* Blocking on submit(callable) throws InterruptedException if |
596 |
* caller interrupted. |
597 |
*/ |
598 |
public void testInterruptedSubmit() throws InterruptedException { |
599 |
final ForkJoinPool p = new ForkJoinPool(1); |
600 |
|
601 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
602 |
public void realRun() throws Throwable { |
603 |
p.submit(new CheckedCallable<Object>() { |
604 |
public Object realCall() throws Throwable { |
605 |
try { |
606 |
Thread.sleep(MEDIUM_DELAY_MS); |
607 |
} catch (InterruptedException ok) { |
608 |
} |
609 |
return null; |
610 |
}}).get(); |
611 |
}}); |
612 |
|
613 |
t.start(); |
614 |
Thread.sleep(SHORT_DELAY_MS); |
615 |
t.interrupt(); |
616 |
t.join(); |
617 |
p.shutdownNow(); |
618 |
joinPool(p); |
619 |
} |
620 |
|
621 |
/** |
622 |
* get of submit(callable) throws ExecutionException if callable |
623 |
* throws exception |
624 |
*/ |
625 |
public void testSubmitEE() throws Throwable { |
626 |
ForkJoinPool p = new ForkJoinPool(1); |
627 |
try { |
628 |
p.submit(new Callable() { |
629 |
public Object call() { |
630 |
int i = 5/0; |
631 |
return Boolean.TRUE; |
632 |
}}).get(); |
633 |
shouldThrow(); |
634 |
} catch (ExecutionException success) { |
635 |
assertTrue(success.getCause() instanceof ArithmeticException); |
636 |
} |
637 |
|
638 |
joinPool(p); |
639 |
} |
640 |
|
641 |
/** |
642 |
* invokeAny(null) throws NullPointerException |
643 |
*/ |
644 |
public void testInvokeAny1() throws Throwable { |
645 |
ExecutorService e = new ForkJoinPool(1); |
646 |
try { |
647 |
e.invokeAny(null); |
648 |
shouldThrow(); |
649 |
} catch (NullPointerException success) { |
650 |
} finally { |
651 |
joinPool(e); |
652 |
} |
653 |
} |
654 |
|
655 |
/** |
656 |
* invokeAny(empty collection) throws IllegalArgumentException |
657 |
*/ |
658 |
public void testInvokeAny2() throws Throwable { |
659 |
ExecutorService e = new ForkJoinPool(1); |
660 |
try { |
661 |
e.invokeAny(new ArrayList<Callable<String>>()); |
662 |
shouldThrow(); |
663 |
} catch (IllegalArgumentException success) { |
664 |
} finally { |
665 |
joinPool(e); |
666 |
} |
667 |
} |
668 |
|
669 |
/** |
670 |
* invokeAny(c) throws NullPointerException if c has a single null element |
671 |
*/ |
672 |
public void testInvokeAny3() throws Throwable { |
673 |
ExecutorService e = new ForkJoinPool(1); |
674 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
675 |
l.add(null); |
676 |
try { |
677 |
e.invokeAny(l); |
678 |
shouldThrow(); |
679 |
} catch (NullPointerException success) { |
680 |
} finally { |
681 |
joinPool(e); |
682 |
} |
683 |
} |
684 |
|
685 |
/** |
686 |
* invokeAny(c) throws NullPointerException if c has null elements |
687 |
*/ |
688 |
public void testInvokeAny4() throws Throwable { |
689 |
CountDownLatch latch = new CountDownLatch(1); |
690 |
ExecutorService e = new ForkJoinPool(1); |
691 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
692 |
l.add(latchAwaitingStringTask(latch)); |
693 |
l.add(null); |
694 |
try { |
695 |
e.invokeAny(l); |
696 |
shouldThrow(); |
697 |
} catch (NullPointerException success) { |
698 |
} finally { |
699 |
latch.countDown(); |
700 |
joinPool(e); |
701 |
} |
702 |
} |
703 |
|
704 |
/** |
705 |
* invokeAny(c) throws ExecutionException if no task in c completes |
706 |
*/ |
707 |
public void testInvokeAny5() throws Throwable { |
708 |
ExecutorService e = new ForkJoinPool(1); |
709 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
710 |
l.add(new NPETask()); |
711 |
try { |
712 |
e.invokeAny(l); |
713 |
shouldThrow(); |
714 |
} catch (ExecutionException success) { |
715 |
assertTrue(success.getCause() instanceof NullPointerException); |
716 |
} finally { |
717 |
joinPool(e); |
718 |
} |
719 |
} |
720 |
|
721 |
/** |
722 |
* invokeAny(c) returns result of some task in c if at least one completes |
723 |
*/ |
724 |
public void testInvokeAny6() throws Throwable { |
725 |
ExecutorService e = new ForkJoinPool(1); |
726 |
try { |
727 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
728 |
l.add(new StringTask()); |
729 |
l.add(new StringTask()); |
730 |
String result = e.invokeAny(l); |
731 |
assertSame(TEST_STRING, result); |
732 |
} finally { |
733 |
joinPool(e); |
734 |
} |
735 |
} |
736 |
|
737 |
/** |
738 |
* invokeAll(null) throws NullPointerException |
739 |
*/ |
740 |
public void testInvokeAll1() throws Throwable { |
741 |
ExecutorService e = new ForkJoinPool(1); |
742 |
try { |
743 |
e.invokeAll(null); |
744 |
shouldThrow(); |
745 |
} catch (NullPointerException success) { |
746 |
} finally { |
747 |
joinPool(e); |
748 |
} |
749 |
} |
750 |
|
751 |
/** |
752 |
* invokeAll(empty collection) returns empty collection |
753 |
*/ |
754 |
public void testInvokeAll2() throws InterruptedException { |
755 |
ExecutorService e = new ForkJoinPool(1); |
756 |
try { |
757 |
List<Future<String>> r |
758 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
759 |
assertTrue(r.isEmpty()); |
760 |
} finally { |
761 |
joinPool(e); |
762 |
} |
763 |
} |
764 |
|
765 |
/** |
766 |
* invokeAll(c) throws NullPointerException if c has null elements |
767 |
*/ |
768 |
public void testInvokeAll3() throws InterruptedException { |
769 |
ExecutorService e = new ForkJoinPool(1); |
770 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
771 |
l.add(new StringTask()); |
772 |
l.add(null); |
773 |
try { |
774 |
e.invokeAll(l); |
775 |
shouldThrow(); |
776 |
} catch (NullPointerException success) { |
777 |
} finally { |
778 |
joinPool(e); |
779 |
} |
780 |
} |
781 |
|
782 |
/** |
783 |
* get of returned element of invokeAll(c) throws |
784 |
* ExecutionException on failed task |
785 |
*/ |
786 |
public void testInvokeAll4() throws Throwable { |
787 |
ExecutorService e = new ForkJoinPool(1); |
788 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
789 |
l.add(new NPETask()); |
790 |
List<Future<String>> futures = e.invokeAll(l); |
791 |
assertEquals(1, futures.size()); |
792 |
try { |
793 |
futures.get(0).get(); |
794 |
shouldThrow(); |
795 |
} catch (ExecutionException success) { |
796 |
assertTrue(success.getCause() instanceof NullPointerException); |
797 |
} finally { |
798 |
joinPool(e); |
799 |
} |
800 |
} |
801 |
|
802 |
/** |
803 |
* invokeAll(c) returns results of all completed tasks in c |
804 |
*/ |
805 |
public void testInvokeAll5() throws Throwable { |
806 |
ExecutorService e = new ForkJoinPool(1); |
807 |
try { |
808 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
809 |
l.add(new StringTask()); |
810 |
l.add(new StringTask()); |
811 |
List<Future<String>> futures = e.invokeAll(l); |
812 |
assertEquals(2, futures.size()); |
813 |
for (Future<String> future : futures) |
814 |
assertSame(TEST_STRING, future.get()); |
815 |
} finally { |
816 |
joinPool(e); |
817 |
} |
818 |
} |
819 |
|
820 |
|
821 |
/** |
822 |
* timed invokeAny(null) throws NullPointerException |
823 |
*/ |
824 |
public void testTimedInvokeAny1() throws Throwable { |
825 |
ExecutorService e = new ForkJoinPool(1); |
826 |
try { |
827 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
828 |
shouldThrow(); |
829 |
} catch (NullPointerException success) { |
830 |
} finally { |
831 |
joinPool(e); |
832 |
} |
833 |
} |
834 |
|
835 |
/** |
836 |
* timed invokeAny(null time unit) throws NullPointerException |
837 |
*/ |
838 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
839 |
ExecutorService e = new ForkJoinPool(1); |
840 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
841 |
l.add(new StringTask()); |
842 |
try { |
843 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
844 |
shouldThrow(); |
845 |
} catch (NullPointerException success) { |
846 |
} finally { |
847 |
joinPool(e); |
848 |
} |
849 |
} |
850 |
|
851 |
/** |
852 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
853 |
*/ |
854 |
public void testTimedInvokeAny2() throws Throwable { |
855 |
ExecutorService e = new ForkJoinPool(1); |
856 |
try { |
857 |
e.invokeAny(new ArrayList<Callable<String>>(), |
858 |
MEDIUM_DELAY_MS, MILLISECONDS); |
859 |
shouldThrow(); |
860 |
} catch (IllegalArgumentException success) { |
861 |
} finally { |
862 |
joinPool(e); |
863 |
} |
864 |
} |
865 |
|
866 |
/** |
867 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
868 |
*/ |
869 |
public void testTimedInvokeAny3() throws Throwable { |
870 |
CountDownLatch latch = new CountDownLatch(1); |
871 |
ExecutorService e = new ForkJoinPool(1); |
872 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
873 |
l.add(latchAwaitingStringTask(latch)); |
874 |
l.add(null); |
875 |
try { |
876 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
877 |
shouldThrow(); |
878 |
} catch (NullPointerException success) { |
879 |
} finally { |
880 |
latch.countDown(); |
881 |
joinPool(e); |
882 |
} |
883 |
} |
884 |
|
885 |
/** |
886 |
* timed invokeAny(c) throws ExecutionException if no task completes |
887 |
*/ |
888 |
public void testTimedInvokeAny4() throws Throwable { |
889 |
ExecutorService e = new ForkJoinPool(1); |
890 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
891 |
l.add(new NPETask()); |
892 |
try { |
893 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
894 |
shouldThrow(); |
895 |
} catch (ExecutionException success) { |
896 |
assertTrue(success.getCause() instanceof NullPointerException); |
897 |
} finally { |
898 |
joinPool(e); |
899 |
} |
900 |
} |
901 |
|
902 |
/** |
903 |
* timed invokeAny(c) returns result of some task in c |
904 |
*/ |
905 |
public void testTimedInvokeAny5() throws Throwable { |
906 |
ExecutorService e = new ForkJoinPool(1); |
907 |
try { |
908 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
909 |
l.add(new StringTask()); |
910 |
l.add(new StringTask()); |
911 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
912 |
assertSame(TEST_STRING, result); |
913 |
} finally { |
914 |
joinPool(e); |
915 |
} |
916 |
} |
917 |
|
918 |
/** |
919 |
* timed invokeAll(null) throws NullPointerException |
920 |
*/ |
921 |
public void testTimedInvokeAll1() throws Throwable { |
922 |
ExecutorService e = new ForkJoinPool(1); |
923 |
try { |
924 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
925 |
shouldThrow(); |
926 |
} catch (NullPointerException success) { |
927 |
} finally { |
928 |
joinPool(e); |
929 |
} |
930 |
} |
931 |
|
932 |
/** |
933 |
* timed invokeAll(null time unit) throws NullPointerException |
934 |
*/ |
935 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
936 |
ExecutorService e = new ForkJoinPool(1); |
937 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
938 |
l.add(new StringTask()); |
939 |
try { |
940 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
941 |
shouldThrow(); |
942 |
} catch (NullPointerException success) { |
943 |
} finally { |
944 |
joinPool(e); |
945 |
} |
946 |
} |
947 |
|
948 |
/** |
949 |
* timed invokeAll(empty collection) returns empty collection |
950 |
*/ |
951 |
public void testTimedInvokeAll2() throws InterruptedException { |
952 |
ExecutorService e = new ForkJoinPool(1); |
953 |
try { |
954 |
List<Future<String>> r |
955 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
956 |
MEDIUM_DELAY_MS, MILLISECONDS); |
957 |
assertTrue(r.isEmpty()); |
958 |
} finally { |
959 |
joinPool(e); |
960 |
} |
961 |
} |
962 |
|
963 |
/** |
964 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
965 |
*/ |
966 |
public void testTimedInvokeAll3() throws InterruptedException { |
967 |
ExecutorService e = new ForkJoinPool(1); |
968 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
969 |
l.add(new StringTask()); |
970 |
l.add(null); |
971 |
try { |
972 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
973 |
shouldThrow(); |
974 |
} catch (NullPointerException success) { |
975 |
} finally { |
976 |
joinPool(e); |
977 |
} |
978 |
} |
979 |
|
980 |
/** |
981 |
* get of returned element of invokeAll(c) throws exception on failed task |
982 |
*/ |
983 |
public void testTimedInvokeAll4() throws Throwable { |
984 |
ExecutorService e = new ForkJoinPool(1); |
985 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
986 |
l.add(new NPETask()); |
987 |
List<Future<String>> futures |
988 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
989 |
assertEquals(1, futures.size()); |
990 |
try { |
991 |
futures.get(0).get(); |
992 |
shouldThrow(); |
993 |
} catch (ExecutionException success) { |
994 |
assertTrue(success.getCause() instanceof NullPointerException); |
995 |
} finally { |
996 |
joinPool(e); |
997 |
} |
998 |
} |
999 |
|
1000 |
/** |
1001 |
* timed invokeAll(c) returns results of all completed tasks in c |
1002 |
*/ |
1003 |
public void testTimedInvokeAll5() throws Throwable { |
1004 |
ExecutorService e = new ForkJoinPool(1); |
1005 |
try { |
1006 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
1007 |
l.add(new StringTask()); |
1008 |
l.add(new StringTask()); |
1009 |
List<Future<String>> futures |
1010 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
1011 |
assertEquals(2, futures.size()); |
1012 |
for (Future<String> future : futures) |
1013 |
assertSame(TEST_STRING, future.get()); |
1014 |
} finally { |
1015 |
joinPool(e); |
1016 |
} |
1017 |
} |
1018 |
|
1019 |
} |