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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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*/ |
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|
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import junit.framework.*; |
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import java.util.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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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.getStealCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* Constructor throws if size argument is less than zero |
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*/ |
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public void testConstructor1() { |
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try { |
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new ForkJoinPool(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* Constructor throws if factory argument is null |
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*/ |
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public void testConstructor2() { |
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try { |
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new ForkJoinPool(1, null, null, false); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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|
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/** |
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* getParallelism returns size set in constructor |
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*/ |
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public void testGetParallelism() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertEquals(1, p.getParallelism()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* getPoolSize returns number of started workers. |
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*/ |
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public void testGetPoolSize() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertEquals(0, p.getActiveThreadCount()); |
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Future<String> future = p.submit(new StringTask()); |
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assertEquals(1, p.getPoolSize()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
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* |
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* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
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* performs its defined action |
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*/ |
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public void testSetUncaughtExceptionHandler() throws InterruptedException { |
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final CountDownLatch uehInvoked = new CountDownLatch(1); |
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final Thread.UncaughtExceptionHandler eh = |
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new Thread.UncaughtExceptionHandler() { |
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public void uncaughtException(Thread t, Throwable e) { |
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uehInvoked.countDown(); |
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}}; |
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ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(), |
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eh, false); |
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try { |
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assertSame(eh, p.getUncaughtExceptionHandler()); |
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p.execute(new FibTask(8)); |
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assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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} finally { |
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p.shutdownNow(); // failure might have prevented processing task |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* After invoking a single task, isQuiescent is true, |
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* queues are empty, threads are not active, and |
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* construction parameters continue to hold |
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*/ |
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public void testisQuiescent() throws InterruptedException { |
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ForkJoinPool p = new ForkJoinPool(2); |
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try { |
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assertTrue(p.isQuiescent()); |
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p.invoke(new FibTask(20)); |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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Thread.sleep(SMALL_DELAY_MS); |
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
276 |
} finally { |
277 |
joinPool(p); |
278 |
} |
279 |
} |
280 |
|
281 |
/** |
282 |
* Completed submit(ForkJoinTask) returns result |
283 |
*/ |
284 |
public void testSubmitForkJoinTask() throws Throwable { |
285 |
ForkJoinPool p = new ForkJoinPool(1); |
286 |
try { |
287 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
288 |
assertEquals(21, (int) f.get()); |
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} finally { |
290 |
joinPool(p); |
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} |
292 |
} |
293 |
|
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/** |
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* A task submitted after shutdown is rejected |
296 |
*/ |
297 |
public void testSubmitAfterShutdown() { |
298 |
ForkJoinPool p = new ForkJoinPool(1); |
299 |
try { |
300 |
p.shutdown(); |
301 |
assertTrue(p.isShutdown()); |
302 |
try { |
303 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
304 |
shouldThrow(); |
305 |
} catch (RejectedExecutionException success) {} |
306 |
} finally { |
307 |
joinPool(p); |
308 |
} |
309 |
} |
310 |
|
311 |
/** |
312 |
* Pool maintains parallelism when using ManagedBlocker |
313 |
*/ |
314 |
public void testBlockingForkJoinTask() throws Throwable { |
315 |
ForkJoinPool p = new ForkJoinPool(4); |
316 |
try { |
317 |
ReentrantLock lock = new ReentrantLock(); |
318 |
ManagedLocker locker = new ManagedLocker(lock); |
319 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
320 |
p.execute(f); |
321 |
assertEquals(6765, (int) f.get()); |
322 |
} finally { |
323 |
p.shutdownNow(); // don't wait out shutdown |
324 |
} |
325 |
} |
326 |
|
327 |
/** |
328 |
* pollSubmission returns unexecuted submitted task, if present |
329 |
*/ |
330 |
public void testPollSubmission() { |
331 |
final CountDownLatch done = new CountDownLatch(1); |
332 |
SubFJP p = new SubFJP(); |
333 |
try { |
334 |
ForkJoinTask a = p.submit(awaiter(done)); |
335 |
ForkJoinTask b = p.submit(awaiter(done)); |
336 |
ForkJoinTask c = p.submit(awaiter(done)); |
337 |
ForkJoinTask r = p.pollSubmission(); |
338 |
assertTrue(r == a || r == b || r == c); |
339 |
assertFalse(r.isDone()); |
340 |
} finally { |
341 |
done.countDown(); |
342 |
joinPool(p); |
343 |
} |
344 |
} |
345 |
|
346 |
/** |
347 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
348 |
*/ |
349 |
public void testDrainTasksTo() { |
350 |
final CountDownLatch done = new CountDownLatch(1); |
351 |
SubFJP p = new SubFJP(); |
352 |
try { |
353 |
ForkJoinTask a = p.submit(awaiter(done)); |
354 |
ForkJoinTask b = p.submit(awaiter(done)); |
355 |
ForkJoinTask c = p.submit(awaiter(done)); |
356 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
357 |
p.drainTasksTo(al); |
358 |
assertTrue(al.size() > 0); |
359 |
for (ForkJoinTask r : al) { |
360 |
assertTrue(r == a || r == b || r == c); |
361 |
assertFalse(r.isDone()); |
362 |
} |
363 |
} finally { |
364 |
done.countDown(); |
365 |
joinPool(p); |
366 |
} |
367 |
} |
368 |
|
369 |
|
370 |
// FJ Versions of AbstractExecutorService tests |
371 |
|
372 |
/** |
373 |
* execute(runnable) runs it to completion |
374 |
*/ |
375 |
public void testExecuteRunnable() throws Throwable { |
376 |
ExecutorService e = new ForkJoinPool(1); |
377 |
try { |
378 |
TrackedRunnable task = trackedRunnable(SHORT_DELAY_MS); |
379 |
assertFalse(task.isDone()); |
380 |
Future<?> future = e.submit(task); |
381 |
assertNull(future.get()); |
382 |
assertNull(future.get(MEDIUM_DELAY_MS, MILLISECONDS)); |
383 |
assertTrue(task.isDone()); |
384 |
assertTrue(future.isDone()); |
385 |
assertFalse(future.isCancelled()); |
386 |
} finally { |
387 |
joinPool(e); |
388 |
} |
389 |
} |
390 |
|
391 |
|
392 |
/** |
393 |
* Completed submit(callable) returns result |
394 |
*/ |
395 |
public void testSubmitCallable() throws Throwable { |
396 |
ExecutorService e = new ForkJoinPool(1); |
397 |
try { |
398 |
Future<String> future = e.submit(new StringTask()); |
399 |
assertSame(TEST_STRING, future.get()); |
400 |
assertTrue(future.isDone()); |
401 |
assertFalse(future.isCancelled()); |
402 |
} finally { |
403 |
joinPool(e); |
404 |
} |
405 |
} |
406 |
|
407 |
/** |
408 |
* Completed submit(runnable) returns successfully |
409 |
*/ |
410 |
public void testSubmitRunnable() throws Throwable { |
411 |
ExecutorService e = new ForkJoinPool(1); |
412 |
try { |
413 |
Future<?> future = e.submit(new NoOpRunnable()); |
414 |
assertNull(future.get()); |
415 |
assertTrue(future.isDone()); |
416 |
assertFalse(future.isCancelled()); |
417 |
} finally { |
418 |
joinPool(e); |
419 |
} |
420 |
} |
421 |
|
422 |
/** |
423 |
* Completed submit(runnable, result) returns result |
424 |
*/ |
425 |
public void testSubmitRunnable2() throws Throwable { |
426 |
ExecutorService e = new ForkJoinPool(1); |
427 |
try { |
428 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
429 |
assertSame(TEST_STRING, future.get()); |
430 |
assertTrue(future.isDone()); |
431 |
assertFalse(future.isCancelled()); |
432 |
} finally { |
433 |
joinPool(e); |
434 |
} |
435 |
} |
436 |
|
437 |
/** |
438 |
* A submitted privileged action runs to completion |
439 |
*/ |
440 |
public void testSubmitPrivilegedAction() throws Exception { |
441 |
Runnable r = new CheckedRunnable() { |
442 |
public void realRun() throws Exception { |
443 |
ExecutorService e = new ForkJoinPool(1); |
444 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
445 |
public Object run() { |
446 |
return TEST_STRING; |
447 |
}})); |
448 |
|
449 |
assertSame(TEST_STRING, future.get()); |
450 |
}}; |
451 |
|
452 |
runWithPermissions(r, |
453 |
new RuntimePermission("modifyThread")); |
454 |
} |
455 |
|
456 |
/** |
457 |
* A submitted privileged exception action runs to completion |
458 |
*/ |
459 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
460 |
Runnable r = new CheckedRunnable() { |
461 |
public void realRun() throws Exception { |
462 |
ExecutorService e = new ForkJoinPool(1); |
463 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
464 |
public Object run() { |
465 |
return TEST_STRING; |
466 |
}})); |
467 |
|
468 |
assertSame(TEST_STRING, future.get()); |
469 |
}}; |
470 |
|
471 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
472 |
} |
473 |
|
474 |
/** |
475 |
* A submitted failed privileged exception action reports exception |
476 |
*/ |
477 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
478 |
Runnable r = new CheckedRunnable() { |
479 |
public void realRun() throws Exception { |
480 |
ExecutorService e = new ForkJoinPool(1); |
481 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
482 |
public Object run() throws Exception { |
483 |
throw new IndexOutOfBoundsException(); |
484 |
}})); |
485 |
|
486 |
try { |
487 |
future.get(); |
488 |
shouldThrow(); |
489 |
} catch (ExecutionException success) { |
490 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
491 |
}}}; |
492 |
|
493 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
494 |
} |
495 |
|
496 |
/** |
497 |
* execute(null runnable) throws NullPointerException |
498 |
*/ |
499 |
public void testExecuteNullRunnable() { |
500 |
ExecutorService e = new ForkJoinPool(1); |
501 |
try { |
502 |
Future<?> future = e.submit((Runnable) null); |
503 |
shouldThrow(); |
504 |
} catch (NullPointerException success) { |
505 |
} finally { |
506 |
joinPool(e); |
507 |
} |
508 |
} |
509 |
|
510 |
|
511 |
/** |
512 |
* submit(null callable) throws NullPointerException |
513 |
*/ |
514 |
public void testSubmitNullCallable() { |
515 |
ExecutorService e = new ForkJoinPool(1); |
516 |
try { |
517 |
Future<String> future = e.submit((Callable) null); |
518 |
shouldThrow(); |
519 |
} catch (NullPointerException success) { |
520 |
} finally { |
521 |
joinPool(e); |
522 |
} |
523 |
} |
524 |
|
525 |
|
526 |
/** |
527 |
* submit(callable).get() throws InterruptedException if interrupted |
528 |
*/ |
529 |
public void testInterruptedSubmit() throws InterruptedException { |
530 |
final CountDownLatch submitted = new CountDownLatch(1); |
531 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
532 |
final ExecutorService p = new ForkJoinPool(1); |
533 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
534 |
public Void realCall() throws InterruptedException { |
535 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
536 |
return null; |
537 |
}}; |
538 |
try { |
539 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
540 |
public void realRun() throws Exception { |
541 |
Future<Void> future = p.submit(awaiter); |
542 |
submitted.countDown(); |
543 |
future.get(); |
544 |
}}); |
545 |
t.start(); |
546 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
547 |
t.interrupt(); |
548 |
t.join(); |
549 |
} finally { |
550 |
quittingTime.countDown(); |
551 |
joinPool(p); |
552 |
} |
553 |
} |
554 |
|
555 |
/** |
556 |
* get of submit(callable) throws ExecutionException if callable |
557 |
* throws exception |
558 |
*/ |
559 |
public void testSubmitEE() throws Throwable { |
560 |
ForkJoinPool p = new ForkJoinPool(1); |
561 |
try { |
562 |
p.submit(new Callable() { |
563 |
public Object call() { |
564 |
int i = 5/0; |
565 |
return Boolean.TRUE; |
566 |
}}).get(); |
567 |
shouldThrow(); |
568 |
} catch (ExecutionException success) { |
569 |
assertTrue(success.getCause() instanceof ArithmeticException); |
570 |
} finally { |
571 |
joinPool(p); |
572 |
} |
573 |
} |
574 |
|
575 |
/** |
576 |
* invokeAny(null) throws NullPointerException |
577 |
*/ |
578 |
public void testInvokeAny1() throws Throwable { |
579 |
ExecutorService e = new ForkJoinPool(1); |
580 |
try { |
581 |
e.invokeAny(null); |
582 |
shouldThrow(); |
583 |
} catch (NullPointerException success) { |
584 |
} finally { |
585 |
joinPool(e); |
586 |
} |
587 |
} |
588 |
|
589 |
/** |
590 |
* invokeAny(empty collection) throws IllegalArgumentException |
591 |
*/ |
592 |
public void testInvokeAny2() throws Throwable { |
593 |
ExecutorService e = new ForkJoinPool(1); |
594 |
try { |
595 |
e.invokeAny(new ArrayList<Callable<String>>()); |
596 |
shouldThrow(); |
597 |
} catch (IllegalArgumentException success) { |
598 |
} finally { |
599 |
joinPool(e); |
600 |
} |
601 |
} |
602 |
|
603 |
/** |
604 |
* invokeAny(c) throws NullPointerException if c has a single null element |
605 |
*/ |
606 |
public void testInvokeAny3() throws Throwable { |
607 |
ExecutorService e = new ForkJoinPool(1); |
608 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
609 |
l.add(null); |
610 |
try { |
611 |
e.invokeAny(l); |
612 |
shouldThrow(); |
613 |
} catch (NullPointerException success) { |
614 |
} finally { |
615 |
joinPool(e); |
616 |
} |
617 |
} |
618 |
|
619 |
/** |
620 |
* invokeAny(c) throws NullPointerException if c has null elements |
621 |
*/ |
622 |
public void testInvokeAny4() throws Throwable { |
623 |
CountDownLatch latch = new CountDownLatch(1); |
624 |
ExecutorService e = new ForkJoinPool(1); |
625 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
626 |
l.add(latchAwaitingStringTask(latch)); |
627 |
l.add(null); |
628 |
try { |
629 |
e.invokeAny(l); |
630 |
shouldThrow(); |
631 |
} catch (NullPointerException success) { |
632 |
} finally { |
633 |
latch.countDown(); |
634 |
joinPool(e); |
635 |
} |
636 |
} |
637 |
|
638 |
/** |
639 |
* invokeAny(c) throws ExecutionException if no task in c completes |
640 |
*/ |
641 |
public void testInvokeAny5() throws Throwable { |
642 |
ExecutorService e = new ForkJoinPool(1); |
643 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
644 |
l.add(new NPETask()); |
645 |
try { |
646 |
e.invokeAny(l); |
647 |
shouldThrow(); |
648 |
} catch (ExecutionException success) { |
649 |
assertTrue(success.getCause() instanceof NullPointerException); |
650 |
} finally { |
651 |
joinPool(e); |
652 |
} |
653 |
} |
654 |
|
655 |
/** |
656 |
* invokeAny(c) returns result of some task in c if at least one completes |
657 |
*/ |
658 |
public void testInvokeAny6() throws Throwable { |
659 |
ExecutorService e = new ForkJoinPool(1); |
660 |
try { |
661 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
662 |
l.add(new StringTask()); |
663 |
l.add(new StringTask()); |
664 |
String result = e.invokeAny(l); |
665 |
assertSame(TEST_STRING, result); |
666 |
} finally { |
667 |
joinPool(e); |
668 |
} |
669 |
} |
670 |
|
671 |
/** |
672 |
* invokeAll(null) throws NullPointerException |
673 |
*/ |
674 |
public void testInvokeAll1() throws Throwable { |
675 |
ExecutorService e = new ForkJoinPool(1); |
676 |
try { |
677 |
e.invokeAll(null); |
678 |
shouldThrow(); |
679 |
} catch (NullPointerException success) { |
680 |
} finally { |
681 |
joinPool(e); |
682 |
} |
683 |
} |
684 |
|
685 |
/** |
686 |
* invokeAll(empty collection) returns empty collection |
687 |
*/ |
688 |
public void testInvokeAll2() throws InterruptedException { |
689 |
ExecutorService e = new ForkJoinPool(1); |
690 |
try { |
691 |
List<Future<String>> r |
692 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
693 |
assertTrue(r.isEmpty()); |
694 |
} finally { |
695 |
joinPool(e); |
696 |
} |
697 |
} |
698 |
|
699 |
/** |
700 |
* invokeAll(c) throws NullPointerException if c has null elements |
701 |
*/ |
702 |
public void testInvokeAll3() throws InterruptedException { |
703 |
ExecutorService e = new ForkJoinPool(1); |
704 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
705 |
l.add(new StringTask()); |
706 |
l.add(null); |
707 |
try { |
708 |
e.invokeAll(l); |
709 |
shouldThrow(); |
710 |
} catch (NullPointerException success) { |
711 |
} finally { |
712 |
joinPool(e); |
713 |
} |
714 |
} |
715 |
|
716 |
/** |
717 |
* get of returned element of invokeAll(c) throws |
718 |
* ExecutionException on failed task |
719 |
*/ |
720 |
public void testInvokeAll4() throws Throwable { |
721 |
ExecutorService e = new ForkJoinPool(1); |
722 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
723 |
l.add(new NPETask()); |
724 |
List<Future<String>> futures = e.invokeAll(l); |
725 |
assertEquals(1, futures.size()); |
726 |
try { |
727 |
futures.get(0).get(); |
728 |
shouldThrow(); |
729 |
} catch (ExecutionException success) { |
730 |
assertTrue(success.getCause() instanceof NullPointerException); |
731 |
} finally { |
732 |
joinPool(e); |
733 |
} |
734 |
} |
735 |
|
736 |
/** |
737 |
* invokeAll(c) returns results of all completed tasks in c |
738 |
*/ |
739 |
public void testInvokeAll5() throws Throwable { |
740 |
ExecutorService e = new ForkJoinPool(1); |
741 |
try { |
742 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
743 |
l.add(new StringTask()); |
744 |
l.add(new StringTask()); |
745 |
List<Future<String>> futures = e.invokeAll(l); |
746 |
assertEquals(2, futures.size()); |
747 |
for (Future<String> future : futures) |
748 |
assertSame(TEST_STRING, future.get()); |
749 |
} finally { |
750 |
joinPool(e); |
751 |
} |
752 |
} |
753 |
|
754 |
|
755 |
/** |
756 |
* timed invokeAny(null) throws NullPointerException |
757 |
*/ |
758 |
public void testTimedInvokeAny1() throws Throwable { |
759 |
ExecutorService e = new ForkJoinPool(1); |
760 |
try { |
761 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
762 |
shouldThrow(); |
763 |
} catch (NullPointerException success) { |
764 |
} finally { |
765 |
joinPool(e); |
766 |
} |
767 |
} |
768 |
|
769 |
/** |
770 |
* timed invokeAny(null time unit) throws NullPointerException |
771 |
*/ |
772 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
773 |
ExecutorService e = new ForkJoinPool(1); |
774 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
775 |
l.add(new StringTask()); |
776 |
try { |
777 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
778 |
shouldThrow(); |
779 |
} catch (NullPointerException success) { |
780 |
} finally { |
781 |
joinPool(e); |
782 |
} |
783 |
} |
784 |
|
785 |
/** |
786 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
787 |
*/ |
788 |
public void testTimedInvokeAny2() throws Throwable { |
789 |
ExecutorService e = new ForkJoinPool(1); |
790 |
try { |
791 |
e.invokeAny(new ArrayList<Callable<String>>(), |
792 |
MEDIUM_DELAY_MS, MILLISECONDS); |
793 |
shouldThrow(); |
794 |
} catch (IllegalArgumentException success) { |
795 |
} finally { |
796 |
joinPool(e); |
797 |
} |
798 |
} |
799 |
|
800 |
/** |
801 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
802 |
*/ |
803 |
public void testTimedInvokeAny3() throws Throwable { |
804 |
CountDownLatch latch = new CountDownLatch(1); |
805 |
ExecutorService e = new ForkJoinPool(1); |
806 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
807 |
l.add(latchAwaitingStringTask(latch)); |
808 |
l.add(null); |
809 |
try { |
810 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
811 |
shouldThrow(); |
812 |
} catch (NullPointerException success) { |
813 |
} finally { |
814 |
latch.countDown(); |
815 |
joinPool(e); |
816 |
} |
817 |
} |
818 |
|
819 |
/** |
820 |
* timed invokeAny(c) throws ExecutionException if no task completes |
821 |
*/ |
822 |
public void testTimedInvokeAny4() throws Throwable { |
823 |
ExecutorService e = new ForkJoinPool(1); |
824 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
825 |
l.add(new NPETask()); |
826 |
try { |
827 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
828 |
shouldThrow(); |
829 |
} catch (ExecutionException success) { |
830 |
assertTrue(success.getCause() instanceof NullPointerException); |
831 |
} finally { |
832 |
joinPool(e); |
833 |
} |
834 |
} |
835 |
|
836 |
/** |
837 |
* timed invokeAny(c) returns result of some task in c |
838 |
*/ |
839 |
public void testTimedInvokeAny5() throws Throwable { |
840 |
ExecutorService e = new ForkJoinPool(1); |
841 |
try { |
842 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
843 |
l.add(new StringTask()); |
844 |
l.add(new StringTask()); |
845 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
846 |
assertSame(TEST_STRING, result); |
847 |
} finally { |
848 |
joinPool(e); |
849 |
} |
850 |
} |
851 |
|
852 |
/** |
853 |
* timed invokeAll(null) throws NullPointerException |
854 |
*/ |
855 |
public void testTimedInvokeAll1() throws Throwable { |
856 |
ExecutorService e = new ForkJoinPool(1); |
857 |
try { |
858 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
859 |
shouldThrow(); |
860 |
} catch (NullPointerException success) { |
861 |
} finally { |
862 |
joinPool(e); |
863 |
} |
864 |
} |
865 |
|
866 |
/** |
867 |
* timed invokeAll(null time unit) throws NullPointerException |
868 |
*/ |
869 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
870 |
ExecutorService e = new ForkJoinPool(1); |
871 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
872 |
l.add(new StringTask()); |
873 |
try { |
874 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
875 |
shouldThrow(); |
876 |
} catch (NullPointerException success) { |
877 |
} finally { |
878 |
joinPool(e); |
879 |
} |
880 |
} |
881 |
|
882 |
/** |
883 |
* timed invokeAll(empty collection) returns empty collection |
884 |
*/ |
885 |
public void testTimedInvokeAll2() throws InterruptedException { |
886 |
ExecutorService e = new ForkJoinPool(1); |
887 |
try { |
888 |
List<Future<String>> r |
889 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
890 |
MEDIUM_DELAY_MS, MILLISECONDS); |
891 |
assertTrue(r.isEmpty()); |
892 |
} finally { |
893 |
joinPool(e); |
894 |
} |
895 |
} |
896 |
|
897 |
/** |
898 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
899 |
*/ |
900 |
public void testTimedInvokeAll3() throws InterruptedException { |
901 |
ExecutorService e = new ForkJoinPool(1); |
902 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
903 |
l.add(new StringTask()); |
904 |
l.add(null); |
905 |
try { |
906 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
907 |
shouldThrow(); |
908 |
} catch (NullPointerException success) { |
909 |
} finally { |
910 |
joinPool(e); |
911 |
} |
912 |
} |
913 |
|
914 |
/** |
915 |
* get of returned element of invokeAll(c) throws exception on failed task |
916 |
*/ |
917 |
public void testTimedInvokeAll4() throws Throwable { |
918 |
ExecutorService e = new ForkJoinPool(1); |
919 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
920 |
l.add(new NPETask()); |
921 |
List<Future<String>> futures |
922 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
923 |
assertEquals(1, futures.size()); |
924 |
try { |
925 |
futures.get(0).get(); |
926 |
shouldThrow(); |
927 |
} catch (ExecutionException success) { |
928 |
assertTrue(success.getCause() instanceof NullPointerException); |
929 |
} finally { |
930 |
joinPool(e); |
931 |
} |
932 |
} |
933 |
|
934 |
/** |
935 |
* timed invokeAll(c) returns results of all completed tasks in c |
936 |
*/ |
937 |
public void testTimedInvokeAll5() throws Throwable { |
938 |
ExecutorService e = new ForkJoinPool(1); |
939 |
try { |
940 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
941 |
l.add(new StringTask()); |
942 |
l.add(new StringTask()); |
943 |
List<Future<String>> futures |
944 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
945 |
assertEquals(2, futures.size()); |
946 |
for (Future<String> future : futures) |
947 |
assertSame(TEST_STRING, future.get()); |
948 |
} finally { |
949 |
joinPool(e); |
950 |
} |
951 |
} |
952 |
|
953 |
} |