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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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import junit.framework.*; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.List; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.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.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.atomic.AtomicBoolean; |
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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 static java.util.concurrent.TimeUnit.NANOSECONDS; |
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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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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 { |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getStealCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* Constructor throws if size argument is less than zero |
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*/ |
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public void testConstructor1() { |
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try { |
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new ForkJoinPool(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* Constructor throws if factory argument is null |
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*/ |
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public void testConstructor2() { |
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try { |
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new ForkJoinPool(1, null, null, false); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* 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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* 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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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(0L, NANOSECONDS)); |
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assertFalse(p.awaitTermination(0L, MILLISECONDS)); |
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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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* 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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try { |
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p.execute(new FibTask(8)); |
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assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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} catch (RejectedExecutionException ok) { |
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} |
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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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/** |
280 |
* 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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*/ |
285 |
public void testIsQuiescent() throws Exception { |
286 |
ForkJoinPool p = new ForkJoinPool(2); |
287 |
try { |
288 |
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()) { |
295 |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
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throw new AssertionFailedError("timed out"); |
297 |
assertFalse(p.getAsyncMode()); |
298 |
assertFalse(p.isShutdown()); |
299 |
assertFalse(p.isTerminating()); |
300 |
assertFalse(p.isTerminated()); |
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Thread.yield(); |
302 |
} |
303 |
|
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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()); |
310 |
assertFalse(p.isShutdown()); |
311 |
assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
313 |
assertTrue(f.isDone()); |
314 |
assertEquals(6765, (int) f.get()); |
315 |
} finally { |
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joinPool(p); |
317 |
} |
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} |
319 |
|
320 |
/** |
321 |
* Completed submit(ForkJoinTask) returns result |
322 |
*/ |
323 |
public void testSubmitForkJoinTask() throws Throwable { |
324 |
ForkJoinPool p = new ForkJoinPool(1); |
325 |
try { |
326 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
327 |
assertEquals(21, (int) f.get()); |
328 |
} finally { |
329 |
joinPool(p); |
330 |
} |
331 |
} |
332 |
|
333 |
/** |
334 |
* A task submitted after shutdown is rejected |
335 |
*/ |
336 |
public void testSubmitAfterShutdown() { |
337 |
ForkJoinPool p = new ForkJoinPool(1); |
338 |
try { |
339 |
p.shutdown(); |
340 |
assertTrue(p.isShutdown()); |
341 |
try { |
342 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
343 |
shouldThrow(); |
344 |
} catch (RejectedExecutionException success) {} |
345 |
} finally { |
346 |
joinPool(p); |
347 |
} |
348 |
} |
349 |
|
350 |
/** |
351 |
* Pool maintains parallelism when using ManagedBlocker |
352 |
*/ |
353 |
public void testBlockingForkJoinTask() throws Throwable { |
354 |
ForkJoinPool p = new ForkJoinPool(4); |
355 |
try { |
356 |
ReentrantLock lock = new ReentrantLock(); |
357 |
ManagedLocker locker = new ManagedLocker(lock); |
358 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
359 |
p.execute(f); |
360 |
assertEquals(6765, (int) f.get()); |
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} finally { |
362 |
p.shutdownNow(); // don't wait out shutdown |
363 |
} |
364 |
} |
365 |
|
366 |
/** |
367 |
* pollSubmission returns unexecuted submitted task, if present |
368 |
*/ |
369 |
public void testPollSubmission() { |
370 |
final CountDownLatch done = new CountDownLatch(1); |
371 |
SubFJP p = new SubFJP(); |
372 |
try { |
373 |
ForkJoinTask a = p.submit(awaiter(done)); |
374 |
ForkJoinTask b = p.submit(awaiter(done)); |
375 |
ForkJoinTask c = p.submit(awaiter(done)); |
376 |
ForkJoinTask r = p.pollSubmission(); |
377 |
assertTrue(r == a || r == b || r == c); |
378 |
assertFalse(r.isDone()); |
379 |
} finally { |
380 |
done.countDown(); |
381 |
joinPool(p); |
382 |
} |
383 |
} |
384 |
|
385 |
/** |
386 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
387 |
*/ |
388 |
public void testDrainTasksTo() { |
389 |
final CountDownLatch done = new CountDownLatch(1); |
390 |
SubFJP p = new SubFJP(); |
391 |
try { |
392 |
ForkJoinTask a = p.submit(awaiter(done)); |
393 |
ForkJoinTask b = p.submit(awaiter(done)); |
394 |
ForkJoinTask c = p.submit(awaiter(done)); |
395 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
396 |
p.drainTasksTo(al); |
397 |
assertTrue(al.size() > 0); |
398 |
for (ForkJoinTask r : al) { |
399 |
assertTrue(r == a || r == b || r == c); |
400 |
assertFalse(r.isDone()); |
401 |
} |
402 |
} finally { |
403 |
done.countDown(); |
404 |
joinPool(p); |
405 |
} |
406 |
} |
407 |
|
408 |
// FJ Versions of AbstractExecutorService tests |
409 |
|
410 |
/** |
411 |
* execute(runnable) runs it to completion |
412 |
*/ |
413 |
public void testExecuteRunnable() throws Throwable { |
414 |
ExecutorService e = new ForkJoinPool(1); |
415 |
try { |
416 |
final AtomicBoolean done = new AtomicBoolean(false); |
417 |
Future<?> future = e.submit(new CheckedRunnable() { |
418 |
public void realRun() { |
419 |
done.set(true); |
420 |
}}); |
421 |
assertNull(future.get()); |
422 |
assertNull(future.get(0, MILLISECONDS)); |
423 |
assertTrue(done.get()); |
424 |
assertTrue(future.isDone()); |
425 |
assertFalse(future.isCancelled()); |
426 |
} finally { |
427 |
joinPool(e); |
428 |
} |
429 |
} |
430 |
|
431 |
/** |
432 |
* Completed submit(callable) returns result |
433 |
*/ |
434 |
public void testSubmitCallable() throws Throwable { |
435 |
ExecutorService e = new ForkJoinPool(1); |
436 |
try { |
437 |
Future<String> future = e.submit(new StringTask()); |
438 |
assertSame(TEST_STRING, future.get()); |
439 |
assertTrue(future.isDone()); |
440 |
assertFalse(future.isCancelled()); |
441 |
} finally { |
442 |
joinPool(e); |
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 { |
452 |
Future<?> future = e.submit(new NoOpRunnable()); |
453 |
assertNull(future.get()); |
454 |
assertTrue(future.isDone()); |
455 |
assertFalse(future.isCancelled()); |
456 |
} finally { |
457 |
joinPool(e); |
458 |
} |
459 |
} |
460 |
|
461 |
/** |
462 |
* Completed submit(runnable, result) returns result |
463 |
*/ |
464 |
public void testSubmitRunnable2() throws Throwable { |
465 |
ExecutorService e = new ForkJoinPool(1); |
466 |
try { |
467 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
468 |
assertSame(TEST_STRING, future.get()); |
469 |
assertTrue(future.isDone()); |
470 |
assertFalse(future.isCancelled()); |
471 |
} finally { |
472 |
joinPool(e); |
473 |
} |
474 |
} |
475 |
|
476 |
/** |
477 |
* A submitted privileged action runs to completion |
478 |
*/ |
479 |
public void testSubmitPrivilegedAction() throws Exception { |
480 |
final Callable callable = Executors.callable(new PrivilegedAction() { |
481 |
public Object run() { return TEST_STRING; }}); |
482 |
Runnable r = new CheckedRunnable() { |
483 |
public void realRun() throws Exception { |
484 |
ExecutorService e = new ForkJoinPool(1); |
485 |
try { |
486 |
Future future = e.submit(callable); |
487 |
assertSame(TEST_STRING, future.get()); |
488 |
} finally { |
489 |
joinPool(e); |
490 |
} |
491 |
}}; |
492 |
|
493 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
494 |
} |
495 |
|
496 |
/** |
497 |
* A submitted privileged exception action runs to completion |
498 |
*/ |
499 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
500 |
final Callable callable = |
501 |
Executors.callable(new PrivilegedExceptionAction() { |
502 |
public Object run() { return TEST_STRING; }}); |
503 |
Runnable r = new CheckedRunnable() { |
504 |
public void realRun() throws Exception { |
505 |
ExecutorService e = new ForkJoinPool(1); |
506 |
try { |
507 |
Future future = e.submit(callable); |
508 |
assertSame(TEST_STRING, future.get()); |
509 |
} finally { |
510 |
joinPool(e); |
511 |
} |
512 |
}}; |
513 |
|
514 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
515 |
} |
516 |
|
517 |
/** |
518 |
* A submitted failed privileged exception action reports exception |
519 |
*/ |
520 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
521 |
final Callable callable = |
522 |
Executors.callable(new PrivilegedExceptionAction() { |
523 |
public Object run() { throw new IndexOutOfBoundsException(); }}); |
524 |
Runnable r = new CheckedRunnable() { |
525 |
public void realRun() throws Exception { |
526 |
ExecutorService e = new ForkJoinPool(1); |
527 |
try { |
528 |
Future future = e.submit(callable); |
529 |
try { |
530 |
future.get(); |
531 |
shouldThrow(); |
532 |
} catch (ExecutionException success) { |
533 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
534 |
} |
535 |
} finally { |
536 |
joinPool(e); |
537 |
} |
538 |
}}; |
539 |
|
540 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
541 |
} |
542 |
|
543 |
/** |
544 |
* execute(null runnable) throws NullPointerException |
545 |
*/ |
546 |
public void testExecuteNullRunnable() { |
547 |
ExecutorService e = new ForkJoinPool(1); |
548 |
try { |
549 |
Future<?> future = e.submit((Runnable) null); |
550 |
shouldThrow(); |
551 |
} catch (NullPointerException success) { |
552 |
} finally { |
553 |
joinPool(e); |
554 |
} |
555 |
} |
556 |
|
557 |
/** |
558 |
* submit(null callable) throws NullPointerException |
559 |
*/ |
560 |
public void testSubmitNullCallable() { |
561 |
ExecutorService e = new ForkJoinPool(1); |
562 |
try { |
563 |
Future<String> future = e.submit((Callable) null); |
564 |
shouldThrow(); |
565 |
} catch (NullPointerException success) { |
566 |
} finally { |
567 |
joinPool(e); |
568 |
} |
569 |
} |
570 |
|
571 |
/** |
572 |
* submit(callable).get() throws InterruptedException if interrupted |
573 |
*/ |
574 |
public void testInterruptedSubmit() throws InterruptedException { |
575 |
final CountDownLatch submitted = new CountDownLatch(1); |
576 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
577 |
final ExecutorService p = new ForkJoinPool(1); |
578 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
579 |
public Void realCall() throws InterruptedException { |
580 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
581 |
return null; |
582 |
}}; |
583 |
try { |
584 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
585 |
public void realRun() throws Exception { |
586 |
Future<Void> future = p.submit(awaiter); |
587 |
submitted.countDown(); |
588 |
future.get(); |
589 |
}}); |
590 |
t.start(); |
591 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
592 |
t.interrupt(); |
593 |
t.join(); |
594 |
} finally { |
595 |
quittingTime.countDown(); |
596 |
joinPool(p); |
597 |
} |
598 |
} |
599 |
|
600 |
/** |
601 |
* get of submit(callable) throws ExecutionException if callable |
602 |
* throws exception |
603 |
*/ |
604 |
public void testSubmitEE() throws Throwable { |
605 |
ForkJoinPool p = new ForkJoinPool(1); |
606 |
try { |
607 |
p.submit(new Callable() { |
608 |
public Object call() { throw new ArithmeticException(); }}) |
609 |
.get(); |
610 |
shouldThrow(); |
611 |
} catch (ExecutionException success) { |
612 |
assertTrue(success.getCause() instanceof ArithmeticException); |
613 |
} finally { |
614 |
joinPool(p); |
615 |
} |
616 |
} |
617 |
|
618 |
/** |
619 |
* invokeAny(null) throws NullPointerException |
620 |
*/ |
621 |
public void testInvokeAny1() throws Throwable { |
622 |
ExecutorService e = new ForkJoinPool(1); |
623 |
try { |
624 |
e.invokeAny(null); |
625 |
shouldThrow(); |
626 |
} catch (NullPointerException success) { |
627 |
} finally { |
628 |
joinPool(e); |
629 |
} |
630 |
} |
631 |
|
632 |
/** |
633 |
* invokeAny(empty collection) throws IllegalArgumentException |
634 |
*/ |
635 |
public void testInvokeAny2() throws Throwable { |
636 |
ExecutorService e = new ForkJoinPool(1); |
637 |
try { |
638 |
e.invokeAny(new ArrayList<Callable<String>>()); |
639 |
shouldThrow(); |
640 |
} catch (IllegalArgumentException success) { |
641 |
} finally { |
642 |
joinPool(e); |
643 |
} |
644 |
} |
645 |
|
646 |
/** |
647 |
* invokeAny(c) throws NullPointerException if c has a single null element |
648 |
*/ |
649 |
public void testInvokeAny3() throws Throwable { |
650 |
ExecutorService e = new ForkJoinPool(1); |
651 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
652 |
l.add(null); |
653 |
try { |
654 |
e.invokeAny(l); |
655 |
shouldThrow(); |
656 |
} catch (NullPointerException success) { |
657 |
} finally { |
658 |
joinPool(e); |
659 |
} |
660 |
} |
661 |
|
662 |
/** |
663 |
* invokeAny(c) throws NullPointerException if c has null elements |
664 |
*/ |
665 |
public void testInvokeAny4() throws Throwable { |
666 |
CountDownLatch latch = new CountDownLatch(1); |
667 |
ExecutorService e = new ForkJoinPool(1); |
668 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
669 |
l.add(latchAwaitingStringTask(latch)); |
670 |
l.add(null); |
671 |
try { |
672 |
e.invokeAny(l); |
673 |
shouldThrow(); |
674 |
} catch (NullPointerException success) { |
675 |
} finally { |
676 |
latch.countDown(); |
677 |
joinPool(e); |
678 |
} |
679 |
} |
680 |
|
681 |
/** |
682 |
* invokeAny(c) throws ExecutionException if no task in c completes |
683 |
*/ |
684 |
public void testInvokeAny5() throws Throwable { |
685 |
ExecutorService e = new ForkJoinPool(1); |
686 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
687 |
l.add(new NPETask()); |
688 |
try { |
689 |
e.invokeAny(l); |
690 |
shouldThrow(); |
691 |
} catch (ExecutionException success) { |
692 |
assertTrue(success.getCause() instanceof NullPointerException); |
693 |
} finally { |
694 |
joinPool(e); |
695 |
} |
696 |
} |
697 |
|
698 |
/** |
699 |
* invokeAny(c) returns result of some task in c if at least one completes |
700 |
*/ |
701 |
public void testInvokeAny6() throws Throwable { |
702 |
ExecutorService e = new ForkJoinPool(1); |
703 |
try { |
704 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
705 |
l.add(new StringTask()); |
706 |
l.add(new StringTask()); |
707 |
String result = e.invokeAny(l); |
708 |
assertSame(TEST_STRING, result); |
709 |
} finally { |
710 |
joinPool(e); |
711 |
} |
712 |
} |
713 |
|
714 |
/** |
715 |
* invokeAll(null) throws NullPointerException |
716 |
*/ |
717 |
public void testInvokeAll1() throws Throwable { |
718 |
ExecutorService e = new ForkJoinPool(1); |
719 |
try { |
720 |
e.invokeAll(null); |
721 |
shouldThrow(); |
722 |
} catch (NullPointerException success) { |
723 |
} finally { |
724 |
joinPool(e); |
725 |
} |
726 |
} |
727 |
|
728 |
/** |
729 |
* invokeAll(empty collection) returns empty collection |
730 |
*/ |
731 |
public void testInvokeAll2() throws InterruptedException { |
732 |
ExecutorService e = new ForkJoinPool(1); |
733 |
try { |
734 |
List<Future<String>> r |
735 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
736 |
assertTrue(r.isEmpty()); |
737 |
} finally { |
738 |
joinPool(e); |
739 |
} |
740 |
} |
741 |
|
742 |
/** |
743 |
* invokeAll(c) throws NullPointerException if c has null elements |
744 |
*/ |
745 |
public void testInvokeAll3() throws InterruptedException { |
746 |
ExecutorService e = new ForkJoinPool(1); |
747 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
748 |
l.add(new StringTask()); |
749 |
l.add(null); |
750 |
try { |
751 |
e.invokeAll(l); |
752 |
shouldThrow(); |
753 |
} catch (NullPointerException success) { |
754 |
} finally { |
755 |
joinPool(e); |
756 |
} |
757 |
} |
758 |
|
759 |
/** |
760 |
* get of returned element of invokeAll(c) throws |
761 |
* ExecutionException on failed task |
762 |
*/ |
763 |
public void testInvokeAll4() throws Throwable { |
764 |
ExecutorService e = new ForkJoinPool(1); |
765 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
766 |
l.add(new NPETask()); |
767 |
List<Future<String>> futures = e.invokeAll(l); |
768 |
assertEquals(1, futures.size()); |
769 |
try { |
770 |
futures.get(0).get(); |
771 |
shouldThrow(); |
772 |
} catch (ExecutionException success) { |
773 |
assertTrue(success.getCause() instanceof NullPointerException); |
774 |
} finally { |
775 |
joinPool(e); |
776 |
} |
777 |
} |
778 |
|
779 |
/** |
780 |
* invokeAll(c) returns results of all completed tasks in c |
781 |
*/ |
782 |
public void testInvokeAll5() throws Throwable { |
783 |
ExecutorService e = new ForkJoinPool(1); |
784 |
try { |
785 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
786 |
l.add(new StringTask()); |
787 |
l.add(new StringTask()); |
788 |
List<Future<String>> futures = e.invokeAll(l); |
789 |
assertEquals(2, futures.size()); |
790 |
for (Future<String> future : futures) |
791 |
assertSame(TEST_STRING, future.get()); |
792 |
} finally { |
793 |
joinPool(e); |
794 |
} |
795 |
} |
796 |
|
797 |
/** |
798 |
* timed invokeAny(null) throws NullPointerException |
799 |
*/ |
800 |
public void testTimedInvokeAny1() throws Throwable { |
801 |
ExecutorService e = new ForkJoinPool(1); |
802 |
try { |
803 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
804 |
shouldThrow(); |
805 |
} catch (NullPointerException success) { |
806 |
} finally { |
807 |
joinPool(e); |
808 |
} |
809 |
} |
810 |
|
811 |
/** |
812 |
* timed invokeAny(null time unit) throws NullPointerException |
813 |
*/ |
814 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
815 |
ExecutorService e = new ForkJoinPool(1); |
816 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
817 |
l.add(new StringTask()); |
818 |
try { |
819 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
820 |
shouldThrow(); |
821 |
} catch (NullPointerException success) { |
822 |
} finally { |
823 |
joinPool(e); |
824 |
} |
825 |
} |
826 |
|
827 |
/** |
828 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
829 |
*/ |
830 |
public void testTimedInvokeAny2() throws Throwable { |
831 |
ExecutorService e = new ForkJoinPool(1); |
832 |
try { |
833 |
e.invokeAny(new ArrayList<Callable<String>>(), |
834 |
MEDIUM_DELAY_MS, MILLISECONDS); |
835 |
shouldThrow(); |
836 |
} catch (IllegalArgumentException success) { |
837 |
} finally { |
838 |
joinPool(e); |
839 |
} |
840 |
} |
841 |
|
842 |
/** |
843 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
844 |
*/ |
845 |
public void testTimedInvokeAny3() throws Throwable { |
846 |
CountDownLatch latch = new CountDownLatch(1); |
847 |
ExecutorService e = new ForkJoinPool(1); |
848 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
849 |
l.add(latchAwaitingStringTask(latch)); |
850 |
l.add(null); |
851 |
try { |
852 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
853 |
shouldThrow(); |
854 |
} catch (NullPointerException success) { |
855 |
} finally { |
856 |
latch.countDown(); |
857 |
joinPool(e); |
858 |
} |
859 |
} |
860 |
|
861 |
/** |
862 |
* timed invokeAny(c) throws ExecutionException if no task completes |
863 |
*/ |
864 |
public void testTimedInvokeAny4() throws Throwable { |
865 |
ExecutorService e = new ForkJoinPool(1); |
866 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
867 |
l.add(new NPETask()); |
868 |
try { |
869 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
870 |
shouldThrow(); |
871 |
} catch (ExecutionException success) { |
872 |
assertTrue(success.getCause() instanceof NullPointerException); |
873 |
} finally { |
874 |
joinPool(e); |
875 |
} |
876 |
} |
877 |
|
878 |
/** |
879 |
* timed invokeAny(c) returns result of some task in c |
880 |
*/ |
881 |
public void testTimedInvokeAny5() throws Throwable { |
882 |
ExecutorService e = new ForkJoinPool(1); |
883 |
try { |
884 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
885 |
l.add(new StringTask()); |
886 |
l.add(new StringTask()); |
887 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
888 |
assertSame(TEST_STRING, result); |
889 |
} finally { |
890 |
joinPool(e); |
891 |
} |
892 |
} |
893 |
|
894 |
/** |
895 |
* timed invokeAll(null) throws NullPointerException |
896 |
*/ |
897 |
public void testTimedInvokeAll1() throws Throwable { |
898 |
ExecutorService e = new ForkJoinPool(1); |
899 |
try { |
900 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
901 |
shouldThrow(); |
902 |
} catch (NullPointerException success) { |
903 |
} finally { |
904 |
joinPool(e); |
905 |
} |
906 |
} |
907 |
|
908 |
/** |
909 |
* timed invokeAll(null time unit) throws NullPointerException |
910 |
*/ |
911 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
912 |
ExecutorService e = new ForkJoinPool(1); |
913 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
914 |
l.add(new StringTask()); |
915 |
try { |
916 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
917 |
shouldThrow(); |
918 |
} catch (NullPointerException success) { |
919 |
} finally { |
920 |
joinPool(e); |
921 |
} |
922 |
} |
923 |
|
924 |
/** |
925 |
* timed invokeAll(empty collection) returns empty collection |
926 |
*/ |
927 |
public void testTimedInvokeAll2() throws InterruptedException { |
928 |
ExecutorService e = new ForkJoinPool(1); |
929 |
try { |
930 |
List<Future<String>> r |
931 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
932 |
MEDIUM_DELAY_MS, MILLISECONDS); |
933 |
assertTrue(r.isEmpty()); |
934 |
} finally { |
935 |
joinPool(e); |
936 |
} |
937 |
} |
938 |
|
939 |
/** |
940 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
941 |
*/ |
942 |
public void testTimedInvokeAll3() throws InterruptedException { |
943 |
ExecutorService e = new ForkJoinPool(1); |
944 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
945 |
l.add(new StringTask()); |
946 |
l.add(null); |
947 |
try { |
948 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
949 |
shouldThrow(); |
950 |
} catch (NullPointerException success) { |
951 |
} finally { |
952 |
joinPool(e); |
953 |
} |
954 |
} |
955 |
|
956 |
/** |
957 |
* get of returned element of invokeAll(c) throws exception on failed task |
958 |
*/ |
959 |
public void testTimedInvokeAll4() throws Throwable { |
960 |
ExecutorService e = new ForkJoinPool(1); |
961 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
962 |
l.add(new NPETask()); |
963 |
List<Future<String>> futures |
964 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
965 |
assertEquals(1, futures.size()); |
966 |
try { |
967 |
futures.get(0).get(); |
968 |
shouldThrow(); |
969 |
} catch (ExecutionException success) { |
970 |
assertTrue(success.getCause() instanceof NullPointerException); |
971 |
} finally { |
972 |
joinPool(e); |
973 |
} |
974 |
} |
975 |
|
976 |
/** |
977 |
* timed invokeAll(c) returns results of all completed tasks in c |
978 |
*/ |
979 |
public void testTimedInvokeAll5() throws Throwable { |
980 |
ExecutorService e = new ForkJoinPool(1); |
981 |
try { |
982 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
983 |
l.add(new StringTask()); |
984 |
l.add(new StringTask()); |
985 |
List<Future<String>> futures |
986 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
987 |
assertEquals(2, futures.size()); |
988 |
for (Future<String> future : futures) |
989 |
assertSame(TEST_STRING, future.get()); |
990 |
} finally { |
991 |
joinPool(e); |
992 |
} |
993 |
} |
994 |
|
995 |
} |