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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 static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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|
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import java.security.PrivilegedAction; |
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import java.security.PrivilegedExceptionAction; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.List; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.ExecutionException; |
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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.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.Future; |
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import java.util.concurrent.RecursiveTask; |
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import java.util.concurrent.RejectedExecutionException; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import java.util.concurrent.locks.ReentrantLock; |
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|
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import junit.framework.AssertionFailedError; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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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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main(suite(), args); |
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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 MyError extends Error {} |
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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 MyError(); } |
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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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final AtomicInteger calls = new AtomicInteger(0); |
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public ForkJoinWorkerThread newThread(ForkJoinPool p) { |
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if (calls.incrementAndGet() > 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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protected 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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protected 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 (PoolCleaner cleaner = cleaner(p)) { |
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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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} |
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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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* 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 (PoolCleaner cleaner = cleaner(p)) { |
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assertEquals(1, p.getParallelism()); |
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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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final CountDownLatch taskStarted = new CountDownLatch(1); |
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final CountDownLatch done = new CountDownLatch(1); |
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final ForkJoinPool p = new ForkJoinPool(1); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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assertEquals(0, p.getActiveThreadCount()); |
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final Runnable task = new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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taskStarted.countDown(); |
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assertEquals(1, p.getPoolSize()); |
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assertEquals(1, p.getActiveThreadCount()); |
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await(done); |
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}}; |
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Future<?> future = p.submit(task); |
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await(taskStarted); |
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assertEquals(1, p.getPoolSize()); |
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assertEquals(1, p.getActiveThreadCount()); |
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done.countDown(); |
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} |
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assertEquals(0, p.getPoolSize()); |
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assertEquals(0, p.getActiveThreadCount()); |
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} |
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|
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/** |
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* awaitTermination on a non-shutdown pool times out |
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*/ |
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public void testAwaitTermination_timesOut() throws InterruptedException { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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assertFalse(p.isTerminated()); |
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assertFalse(p.awaitTermination(Long.MIN_VALUE, NANOSECONDS)); |
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assertFalse(p.awaitTermination(Long.MIN_VALUE, MILLISECONDS)); |
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assertFalse(p.awaitTermination(-1L, NANOSECONDS)); |
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assertFalse(p.awaitTermination(-1L, MILLISECONDS)); |
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assertFalse(p.awaitTermination(randomExpiredTimeout(), |
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randomTimeUnit())); |
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long timeoutNanos = 999999L; |
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long startTime = System.nanoTime(); |
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assertFalse(p.awaitTermination(timeoutNanos, NANOSECONDS)); |
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assertTrue(System.nanoTime() - startTime >= timeoutNanos); |
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assertFalse(p.isTerminated()); |
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startTime = System.nanoTime(); |
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long timeoutMillis = timeoutMillis(); |
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assertFalse(p.awaitTermination(timeoutMillis, MILLISECONDS)); |
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
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assertFalse(p.isTerminated()); |
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p.shutdown(); |
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assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS)); |
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assertTrue(p.isTerminated()); |
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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 ueh = |
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new Thread.UncaughtExceptionHandler() { |
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public void uncaughtException(Thread t, Throwable e) { |
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threadAssertTrue(e instanceof MyError); |
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threadAssertTrue(t instanceof FailingFJWSubclass); |
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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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ueh, false); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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assertSame(ueh, p.getUncaughtExceptionHandler()); |
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try { |
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p.execute(new FibTask(8)); |
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await(uehInvoked); |
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} finally { |
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p.shutdownNow(); // failure might have prevented processing task |
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} |
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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 (PoolCleaner cleaner = cleaner(p)) { |
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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.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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while (p.getActiveThreadCount() != 0 |
321 |
&& millisElapsedSince(startTime) < LONG_DELAY_MS) |
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Thread.yield(); |
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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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assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
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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 |
334 |
*/ |
335 |
public void testSubmitForkJoinTask() throws Throwable { |
336 |
ForkJoinPool p = new ForkJoinPool(1); |
337 |
try (PoolCleaner cleaner = cleaner(p)) { |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
339 |
assertEquals(21, (int) f.get()); |
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} |
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} |
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|
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/** |
344 |
* A task submitted after shutdown is rejected |
345 |
*/ |
346 |
public void testSubmitAfterShutdown() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try (PoolCleaner cleaner = cleaner(p)) { |
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p.shutdown(); |
350 |
assertTrue(p.isShutdown()); |
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try { |
352 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
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shouldThrow(); |
354 |
} catch (RejectedExecutionException success) {} |
355 |
} |
356 |
} |
357 |
|
358 |
/** |
359 |
* Pool maintains parallelism when using ManagedBlocker |
360 |
*/ |
361 |
public void testBlockingForkJoinTask() throws Throwable { |
362 |
ForkJoinPool p = new ForkJoinPool(4); |
363 |
try { |
364 |
ReentrantLock lock = new ReentrantLock(); |
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ManagedLocker locker = new ManagedLocker(lock); |
366 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
367 |
p.execute(f); |
368 |
assertEquals(6765, (int) f.get()); |
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} finally { |
370 |
p.shutdownNow(); // don't wait out shutdown |
371 |
} |
372 |
} |
373 |
|
374 |
/** |
375 |
* pollSubmission returns unexecuted submitted task, if present |
376 |
*/ |
377 |
public void testPollSubmission() { |
378 |
final CountDownLatch done = new CountDownLatch(1); |
379 |
SubFJP p = new SubFJP(); |
380 |
try (PoolCleaner cleaner = cleaner(p)) { |
381 |
ForkJoinTask a = p.submit(awaiter(done)); |
382 |
ForkJoinTask b = p.submit(awaiter(done)); |
383 |
ForkJoinTask c = p.submit(awaiter(done)); |
384 |
ForkJoinTask r = p.pollSubmission(); |
385 |
assertTrue(r == a || r == b || r == c); |
386 |
assertFalse(r.isDone()); |
387 |
done.countDown(); |
388 |
} |
389 |
} |
390 |
|
391 |
/** |
392 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
393 |
*/ |
394 |
public void testDrainTasksTo() { |
395 |
final CountDownLatch done = new CountDownLatch(1); |
396 |
SubFJP p = new SubFJP(); |
397 |
try (PoolCleaner cleaner = cleaner(p)) { |
398 |
ForkJoinTask a = p.submit(awaiter(done)); |
399 |
ForkJoinTask b = p.submit(awaiter(done)); |
400 |
ForkJoinTask c = p.submit(awaiter(done)); |
401 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
402 |
p.drainTasksTo(al); |
403 |
assertTrue(al.size() > 0); |
404 |
for (ForkJoinTask r : al) { |
405 |
assertTrue(r == a || r == b || r == c); |
406 |
assertFalse(r.isDone()); |
407 |
} |
408 |
done.countDown(); |
409 |
} |
410 |
} |
411 |
|
412 |
// FJ Versions of AbstractExecutorService tests |
413 |
|
414 |
/** |
415 |
* execute(runnable) runs it to completion |
416 |
*/ |
417 |
public void testExecuteRunnable() throws Throwable { |
418 |
ExecutorService e = new ForkJoinPool(1); |
419 |
try (PoolCleaner cleaner = cleaner(e)) { |
420 |
final AtomicBoolean done = new AtomicBoolean(false); |
421 |
Future<?> future = e.submit(new CheckedRunnable() { |
422 |
public void realRun() { |
423 |
done.set(true); |
424 |
}}); |
425 |
assertNull(future.get()); |
426 |
assertNull(future.get(randomExpiredTimeout(), randomTimeUnit())); |
427 |
assertTrue(done.get()); |
428 |
assertTrue(future.isDone()); |
429 |
assertFalse(future.isCancelled()); |
430 |
} |
431 |
} |
432 |
|
433 |
/** |
434 |
* Completed submit(callable) returns result |
435 |
*/ |
436 |
public void testSubmitCallable() throws Throwable { |
437 |
ExecutorService e = new ForkJoinPool(1); |
438 |
try (PoolCleaner cleaner = cleaner(e)) { |
439 |
Future<String> future = e.submit(new StringTask()); |
440 |
assertSame(TEST_STRING, future.get()); |
441 |
assertTrue(future.isDone()); |
442 |
assertFalse(future.isCancelled()); |
443 |
} |
444 |
} |
445 |
|
446 |
/** |
447 |
* Completed submit(runnable) returns successfully |
448 |
*/ |
449 |
public void testSubmitRunnable() throws Throwable { |
450 |
ExecutorService e = new ForkJoinPool(1); |
451 |
try (PoolCleaner cleaner = cleaner(e)) { |
452 |
Future<?> future = e.submit(new NoOpRunnable()); |
453 |
assertNull(future.get()); |
454 |
assertTrue(future.isDone()); |
455 |
assertFalse(future.isCancelled()); |
456 |
} |
457 |
} |
458 |
|
459 |
/** |
460 |
* Completed submit(runnable, result) returns result |
461 |
*/ |
462 |
public void testSubmitRunnable2() throws Throwable { |
463 |
ExecutorService e = new ForkJoinPool(1); |
464 |
try (PoolCleaner cleaner = cleaner(e)) { |
465 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
466 |
assertSame(TEST_STRING, future.get()); |
467 |
assertTrue(future.isDone()); |
468 |
assertFalse(future.isCancelled()); |
469 |
} |
470 |
} |
471 |
|
472 |
/** |
473 |
* A submitted privileged action runs to completion |
474 |
*/ |
475 |
public void testSubmitPrivilegedAction() throws Exception { |
476 |
final Callable callable = Executors.callable(new PrivilegedAction() { |
477 |
public Object run() { return TEST_STRING; }}); |
478 |
Runnable r = new CheckedRunnable() { |
479 |
public void realRun() throws Exception { |
480 |
ExecutorService e = new ForkJoinPool(1); |
481 |
try (PoolCleaner cleaner = cleaner(e)) { |
482 |
Future future = e.submit(callable); |
483 |
assertSame(TEST_STRING, future.get()); |
484 |
} |
485 |
}}; |
486 |
|
487 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
488 |
} |
489 |
|
490 |
/** |
491 |
* A submitted privileged exception action runs to completion |
492 |
*/ |
493 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
494 |
final Callable callable = |
495 |
Executors.callable(new PrivilegedExceptionAction() { |
496 |
public Object run() { return TEST_STRING; }}); |
497 |
Runnable r = new CheckedRunnable() { |
498 |
public void realRun() throws Exception { |
499 |
ExecutorService e = new ForkJoinPool(1); |
500 |
try (PoolCleaner cleaner = cleaner(e)) { |
501 |
Future future = e.submit(callable); |
502 |
assertSame(TEST_STRING, future.get()); |
503 |
} |
504 |
}}; |
505 |
|
506 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
507 |
} |
508 |
|
509 |
/** |
510 |
* A submitted failed privileged exception action reports exception |
511 |
*/ |
512 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
513 |
final Callable callable = |
514 |
Executors.callable(new PrivilegedExceptionAction() { |
515 |
public Object run() { throw new IndexOutOfBoundsException(); }}); |
516 |
Runnable r = new CheckedRunnable() { |
517 |
public void realRun() throws Exception { |
518 |
ExecutorService e = new ForkJoinPool(1); |
519 |
try (PoolCleaner cleaner = cleaner(e)) { |
520 |
Future future = e.submit(callable); |
521 |
try { |
522 |
future.get(); |
523 |
shouldThrow(); |
524 |
} catch (ExecutionException success) { |
525 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
526 |
} |
527 |
} |
528 |
}}; |
529 |
|
530 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
531 |
} |
532 |
|
533 |
/** |
534 |
* execute(null runnable) throws NullPointerException |
535 |
*/ |
536 |
public void testExecuteNullRunnable() { |
537 |
ExecutorService e = new ForkJoinPool(1); |
538 |
try (PoolCleaner cleaner = cleaner(e)) { |
539 |
try { |
540 |
Future<?> future = e.submit((Runnable) null); |
541 |
shouldThrow(); |
542 |
} catch (NullPointerException success) {} |
543 |
} |
544 |
} |
545 |
|
546 |
/** |
547 |
* submit(null callable) throws NullPointerException |
548 |
*/ |
549 |
public void testSubmitNullCallable() { |
550 |
ExecutorService e = new ForkJoinPool(1); |
551 |
try (PoolCleaner cleaner = cleaner(e)) { |
552 |
try { |
553 |
Future<String> future = e.submit((Callable) null); |
554 |
shouldThrow(); |
555 |
} catch (NullPointerException success) {} |
556 |
} |
557 |
} |
558 |
|
559 |
/** |
560 |
* submit(callable).get() throws InterruptedException if interrupted |
561 |
*/ |
562 |
public void testInterruptedSubmit() throws InterruptedException { |
563 |
final CountDownLatch submitted = new CountDownLatch(1); |
564 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
565 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
566 |
public Void realCall() throws InterruptedException { |
567 |
assertTrue(quittingTime.await(2*LONG_DELAY_MS, MILLISECONDS)); |
568 |
return null; |
569 |
}}; |
570 |
final ExecutorService p = new ForkJoinPool(1); |
571 |
try (PoolCleaner cleaner = cleaner(p, quittingTime)) { |
572 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
573 |
public void realRun() throws Exception { |
574 |
Future<Void> future = p.submit(awaiter); |
575 |
submitted.countDown(); |
576 |
future.get(); |
577 |
}}); |
578 |
t.start(); |
579 |
await(submitted); |
580 |
t.interrupt(); |
581 |
awaitTermination(t); |
582 |
} |
583 |
} |
584 |
|
585 |
/** |
586 |
* get of submit(callable) throws ExecutionException if callable |
587 |
* throws exception |
588 |
*/ |
589 |
public void testSubmitEE() throws Throwable { |
590 |
ForkJoinPool p = new ForkJoinPool(1); |
591 |
try (PoolCleaner cleaner = cleaner(p)) { |
592 |
try { |
593 |
p.submit(new Callable() { |
594 |
public Object call() { throw new ArithmeticException(); }}) |
595 |
.get(); |
596 |
shouldThrow(); |
597 |
} catch (ExecutionException success) { |
598 |
assertTrue(success.getCause() instanceof ArithmeticException); |
599 |
} |
600 |
} |
601 |
} |
602 |
|
603 |
/** |
604 |
* invokeAny(null) throws NullPointerException |
605 |
*/ |
606 |
public void testInvokeAny1() throws Throwable { |
607 |
ExecutorService e = new ForkJoinPool(1); |
608 |
try (PoolCleaner cleaner = cleaner(e)) { |
609 |
try { |
610 |
e.invokeAny(null); |
611 |
shouldThrow(); |
612 |
} catch (NullPointerException success) {} |
613 |
} |
614 |
} |
615 |
|
616 |
/** |
617 |
* invokeAny(empty collection) throws IllegalArgumentException |
618 |
*/ |
619 |
public void testInvokeAny2() throws Throwable { |
620 |
ExecutorService e = new ForkJoinPool(1); |
621 |
try (PoolCleaner cleaner = cleaner(e)) { |
622 |
try { |
623 |
e.invokeAny(new ArrayList<Callable<String>>()); |
624 |
shouldThrow(); |
625 |
} catch (IllegalArgumentException success) {} |
626 |
} |
627 |
} |
628 |
|
629 |
/** |
630 |
* invokeAny(c) throws NullPointerException if c has a single null element |
631 |
*/ |
632 |
public void testInvokeAny3() throws Throwable { |
633 |
ExecutorService e = new ForkJoinPool(1); |
634 |
try (PoolCleaner cleaner = cleaner(e)) { |
635 |
List<Callable<String>> l = new ArrayList<>(); |
636 |
l.add(null); |
637 |
try { |
638 |
e.invokeAny(l); |
639 |
shouldThrow(); |
640 |
} catch (NullPointerException success) {} |
641 |
} |
642 |
} |
643 |
|
644 |
/** |
645 |
* invokeAny(c) throws NullPointerException if c has null elements |
646 |
*/ |
647 |
public void testInvokeAny4() throws Throwable { |
648 |
CountDownLatch latch = new CountDownLatch(1); |
649 |
ExecutorService e = new ForkJoinPool(1); |
650 |
try (PoolCleaner cleaner = cleaner(e)) { |
651 |
List<Callable<String>> l = new ArrayList<>(); |
652 |
l.add(latchAwaitingStringTask(latch)); |
653 |
l.add(null); |
654 |
try { |
655 |
e.invokeAny(l); |
656 |
shouldThrow(); |
657 |
} catch (NullPointerException success) {} |
658 |
latch.countDown(); |
659 |
} |
660 |
} |
661 |
|
662 |
/** |
663 |
* invokeAny(c) throws ExecutionException if no task in c completes |
664 |
*/ |
665 |
public void testInvokeAny5() throws Throwable { |
666 |
ExecutorService e = new ForkJoinPool(1); |
667 |
try (PoolCleaner cleaner = cleaner(e)) { |
668 |
List<Callable<String>> l = new ArrayList<>(); |
669 |
l.add(new NPETask()); |
670 |
try { |
671 |
e.invokeAny(l); |
672 |
shouldThrow(); |
673 |
} catch (ExecutionException success) { |
674 |
assertTrue(success.getCause() instanceof NullPointerException); |
675 |
} |
676 |
} |
677 |
} |
678 |
|
679 |
/** |
680 |
* invokeAny(c) returns result of some task in c if at least one completes |
681 |
*/ |
682 |
public void testInvokeAny6() throws Throwable { |
683 |
ExecutorService e = new ForkJoinPool(1); |
684 |
try (PoolCleaner cleaner = cleaner(e)) { |
685 |
List<Callable<String>> l = new ArrayList<>(); |
686 |
l.add(new StringTask()); |
687 |
l.add(new StringTask()); |
688 |
String result = e.invokeAny(l); |
689 |
assertSame(TEST_STRING, result); |
690 |
} |
691 |
} |
692 |
|
693 |
/** |
694 |
* invokeAll(null) throws NullPointerException |
695 |
*/ |
696 |
public void testInvokeAll1() throws Throwable { |
697 |
ExecutorService e = new ForkJoinPool(1); |
698 |
try (PoolCleaner cleaner = cleaner(e)) { |
699 |
try { |
700 |
e.invokeAll(null); |
701 |
shouldThrow(); |
702 |
} catch (NullPointerException success) {} |
703 |
} |
704 |
} |
705 |
|
706 |
/** |
707 |
* invokeAll(empty collection) returns empty list |
708 |
*/ |
709 |
public void testInvokeAll2() throws InterruptedException { |
710 |
ExecutorService e = new ForkJoinPool(1); |
711 |
final Collection<Callable<String>> emptyCollection |
712 |
= Collections.emptyList(); |
713 |
try (PoolCleaner cleaner = cleaner(e)) { |
714 |
List<Future<String>> r = e.invokeAll(emptyCollection); |
715 |
assertTrue(r.isEmpty()); |
716 |
} |
717 |
} |
718 |
|
719 |
/** |
720 |
* invokeAll(c) throws NullPointerException if c has null elements |
721 |
*/ |
722 |
public void testInvokeAll3() throws InterruptedException { |
723 |
ExecutorService e = new ForkJoinPool(1); |
724 |
try (PoolCleaner cleaner = cleaner(e)) { |
725 |
List<Callable<String>> l = new ArrayList<>(); |
726 |
l.add(new StringTask()); |
727 |
l.add(null); |
728 |
try { |
729 |
e.invokeAll(l); |
730 |
shouldThrow(); |
731 |
} catch (NullPointerException success) {} |
732 |
} |
733 |
} |
734 |
|
735 |
/** |
736 |
* get of returned element of invokeAll(c) throws |
737 |
* ExecutionException on failed task |
738 |
*/ |
739 |
public void testInvokeAll4() throws Throwable { |
740 |
ExecutorService e = new ForkJoinPool(1); |
741 |
try (PoolCleaner cleaner = cleaner(e)) { |
742 |
List<Callable<String>> l = new ArrayList<>(); |
743 |
l.add(new NPETask()); |
744 |
List<Future<String>> futures = e.invokeAll(l); |
745 |
assertEquals(1, futures.size()); |
746 |
try { |
747 |
futures.get(0).get(); |
748 |
shouldThrow(); |
749 |
} catch (ExecutionException success) { |
750 |
assertTrue(success.getCause() instanceof NullPointerException); |
751 |
} |
752 |
} |
753 |
} |
754 |
|
755 |
/** |
756 |
* invokeAll(c) returns results of all completed tasks in c |
757 |
*/ |
758 |
public void testInvokeAll5() throws Throwable { |
759 |
ExecutorService e = new ForkJoinPool(1); |
760 |
try (PoolCleaner cleaner = cleaner(e)) { |
761 |
List<Callable<String>> l = new ArrayList<>(); |
762 |
l.add(new StringTask()); |
763 |
l.add(new StringTask()); |
764 |
List<Future<String>> futures = e.invokeAll(l); |
765 |
assertEquals(2, futures.size()); |
766 |
for (Future<String> future : futures) |
767 |
assertSame(TEST_STRING, future.get()); |
768 |
} |
769 |
} |
770 |
|
771 |
/** |
772 |
* timed invokeAny(null) throws NullPointerException |
773 |
*/ |
774 |
public void testTimedInvokeAny1() throws Throwable { |
775 |
ExecutorService e = new ForkJoinPool(1); |
776 |
try (PoolCleaner cleaner = cleaner(e)) { |
777 |
try { |
778 |
e.invokeAny(null, randomTimeout(), randomTimeUnit()); |
779 |
shouldThrow(); |
780 |
} catch (NullPointerException success) {} |
781 |
} |
782 |
} |
783 |
|
784 |
/** |
785 |
* timed invokeAny(null time unit) throws NullPointerException |
786 |
*/ |
787 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
788 |
ExecutorService e = new ForkJoinPool(1); |
789 |
try (PoolCleaner cleaner = cleaner(e)) { |
790 |
List<Callable<String>> l = new ArrayList<>(); |
791 |
l.add(new StringTask()); |
792 |
try { |
793 |
e.invokeAny(l, randomTimeout(), null); |
794 |
shouldThrow(); |
795 |
} catch (NullPointerException success) {} |
796 |
} |
797 |
} |
798 |
|
799 |
/** |
800 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
801 |
*/ |
802 |
public void testTimedInvokeAny2() throws Throwable { |
803 |
ExecutorService e = new ForkJoinPool(1); |
804 |
try (PoolCleaner cleaner = cleaner(e)) { |
805 |
try { |
806 |
e.invokeAny(new ArrayList<Callable<String>>(), |
807 |
randomTimeout(), randomTimeUnit()); |
808 |
shouldThrow(); |
809 |
} catch (IllegalArgumentException success) {} |
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 |
try (PoolCleaner cleaner = cleaner(e)) { |
820 |
List<Callable<String>> l = new ArrayList<>(); |
821 |
l.add(latchAwaitingStringTask(latch)); |
822 |
l.add(null); |
823 |
try { |
824 |
e.invokeAny(l, randomTimeout(), randomTimeUnit()); |
825 |
shouldThrow(); |
826 |
} catch (NullPointerException success) {} |
827 |
latch.countDown(); |
828 |
} |
829 |
} |
830 |
|
831 |
/** |
832 |
* timed invokeAny(c) throws ExecutionException if no task completes |
833 |
*/ |
834 |
public void testTimedInvokeAny4() throws Throwable { |
835 |
ExecutorService e = new ForkJoinPool(1); |
836 |
try (PoolCleaner cleaner = cleaner(e)) { |
837 |
long startTime = System.nanoTime(); |
838 |
List<Callable<String>> l = new ArrayList<>(); |
839 |
l.add(new NPETask()); |
840 |
try { |
841 |
e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
842 |
shouldThrow(); |
843 |
} catch (ExecutionException success) { |
844 |
assertTrue(success.getCause() instanceof NullPointerException); |
845 |
} |
846 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
847 |
} |
848 |
} |
849 |
|
850 |
/** |
851 |
* timed invokeAny(c) returns result of some task in c |
852 |
*/ |
853 |
public void testTimedInvokeAny5() throws Throwable { |
854 |
ExecutorService e = new ForkJoinPool(1); |
855 |
try (PoolCleaner cleaner = cleaner(e)) { |
856 |
long startTime = System.nanoTime(); |
857 |
List<Callable<String>> l = new ArrayList<>(); |
858 |
l.add(new StringTask()); |
859 |
l.add(new StringTask()); |
860 |
String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS); |
861 |
assertSame(TEST_STRING, result); |
862 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
863 |
} |
864 |
} |
865 |
|
866 |
/** |
867 |
* timed invokeAll(null) throws NullPointerException |
868 |
*/ |
869 |
public void testTimedInvokeAll1() throws Throwable { |
870 |
ExecutorService e = new ForkJoinPool(1); |
871 |
try (PoolCleaner cleaner = cleaner(e)) { |
872 |
try { |
873 |
e.invokeAll(null, randomTimeout(), randomTimeUnit()); |
874 |
shouldThrow(); |
875 |
} catch (NullPointerException success) {} |
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 |
try (PoolCleaner cleaner = cleaner(e)) { |
885 |
List<Callable<String>> l = new ArrayList<>(); |
886 |
l.add(new StringTask()); |
887 |
try { |
888 |
e.invokeAll(l, randomTimeout(), null); |
889 |
shouldThrow(); |
890 |
} catch (NullPointerException success) {} |
891 |
} |
892 |
} |
893 |
|
894 |
/** |
895 |
* timed invokeAll(empty collection) returns empty list |
896 |
*/ |
897 |
public void testTimedInvokeAll2() throws InterruptedException { |
898 |
ExecutorService e = new ForkJoinPool(1); |
899 |
final Collection<Callable<String>> emptyCollection |
900 |
= Collections.emptyList(); |
901 |
try (PoolCleaner cleaner = cleaner(e)) { |
902 |
List<Future<String>> r |
903 |
= e.invokeAll(emptyCollection, |
904 |
randomTimeout(), randomTimeUnit()); |
905 |
assertTrue(r.isEmpty()); |
906 |
} |
907 |
} |
908 |
|
909 |
/** |
910 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
911 |
*/ |
912 |
public void testTimedInvokeAll3() throws InterruptedException { |
913 |
ExecutorService e = new ForkJoinPool(1); |
914 |
try (PoolCleaner cleaner = cleaner(e)) { |
915 |
List<Callable<String>> l = new ArrayList<>(); |
916 |
l.add(new StringTask()); |
917 |
l.add(null); |
918 |
try { |
919 |
e.invokeAll(l, randomTimeout(), randomTimeUnit()); |
920 |
shouldThrow(); |
921 |
} catch (NullPointerException success) {} |
922 |
} |
923 |
} |
924 |
|
925 |
/** |
926 |
* get of returned element of invokeAll(c) throws exception on failed task |
927 |
*/ |
928 |
public void testTimedInvokeAll4() throws Throwable { |
929 |
ExecutorService e = new ForkJoinPool(1); |
930 |
try (PoolCleaner cleaner = cleaner(e)) { |
931 |
List<Callable<String>> l = new ArrayList<>(); |
932 |
l.add(new NPETask()); |
933 |
List<Future<String>> futures |
934 |
= e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
935 |
assertEquals(1, futures.size()); |
936 |
try { |
937 |
futures.get(0).get(); |
938 |
shouldThrow(); |
939 |
} catch (ExecutionException success) { |
940 |
assertTrue(success.getCause() instanceof NullPointerException); |
941 |
} |
942 |
} |
943 |
} |
944 |
|
945 |
/** |
946 |
* timed invokeAll(c) returns results of all completed tasks in c |
947 |
*/ |
948 |
public void testTimedInvokeAll5() throws Throwable { |
949 |
ForkJoinPool e = new ForkJoinPool(1); |
950 |
try (PoolCleaner cleaner = cleaner(e)) { |
951 |
List<Callable<String>> l = new ArrayList<>(); |
952 |
l.add(new StringTask()); |
953 |
l.add(new StringTask()); |
954 |
List<Future<String>> futures |
955 |
= e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS); |
956 |
assertEquals(2, futures.size()); |
957 |
for (Future<String> future : futures) |
958 |
assertSame(TEST_STRING, future.get()); |
959 |
} |
960 |
} |
961 |
|
962 |
} |