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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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import junit.framework.*; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.List; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.AbstractExecutorService; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.CancellationException; |
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import java.util.concurrent.RejectedExecutionException; |
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import java.util.concurrent.ForkJoinPool; |
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import java.util.concurrent.ForkJoinTask; |
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import java.util.concurrent.ForkJoinWorkerThread; |
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import java.util.concurrent.RecursiveTask; |
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import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.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.AccessControlException; |
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import java.security.Policy; |
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import java.security.PrivilegedAction; |
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import java.security.PrivilegedExceptionAction; |
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|
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public class ForkJoinPoolTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(ForkJoinPoolTest.class); |
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} |
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|
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/* |
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* Testing coverage notes: |
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* |
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* 1. shutdown and related methods are tested via super.joinPool. |
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* |
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* 2. newTaskFor and adapters are tested in submit/invoke tests |
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* |
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* 3. We cannot portably test monitoring methods such as |
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* getStealCount() since they rely ultimately on random task |
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* stealing that may cause tasks not to be stolen/propagated |
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* across threads, especially on uniprocessors. |
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* |
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* 4. There are no independently testable ForkJoinWorkerThread |
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* methods, but they are covered here and in task tests. |
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*/ |
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|
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// Some classes to test extension and factory methods |
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|
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static class MyHandler implements Thread.UncaughtExceptionHandler { |
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volatile int catches = 0; |
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public void uncaughtException(Thread t, Throwable e) { |
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++catches; |
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} |
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} |
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|
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// to test handlers |
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static class FailingFJWSubclass extends ForkJoinWorkerThread { |
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public FailingFJWSubclass(ForkJoinPool p) { super(p) ; } |
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protected void onStart() { super.onStart(); throw new Error(); } |
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} |
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|
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static class FailingThreadFactory |
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implements ForkJoinPool.ForkJoinWorkerThreadFactory { |
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volatile int calls = 0; |
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public ForkJoinWorkerThread newThread(ForkJoinPool p) { |
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if (++calls > 1) return null; |
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return new FailingFJWSubclass(p); |
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} |
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} |
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|
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static class SubFJP extends ForkJoinPool { // to expose protected |
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SubFJP() { super(1); } |
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public int drainTasksTo(Collection<? super ForkJoinTask<?>> c) { |
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return super.drainTasksTo(c); |
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} |
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public ForkJoinTask<?> pollSubmission() { |
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return super.pollSubmission(); |
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} |
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} |
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|
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static class ManagedLocker implements ForkJoinPool.ManagedBlocker { |
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final ReentrantLock lock; |
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boolean hasLock = false; |
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ManagedLocker(ReentrantLock lock) { this.lock = lock; } |
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public boolean block() { |
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if (!hasLock) |
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lock.lock(); |
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return true; |
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} |
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public boolean isReleasable() { |
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return hasLock || (hasLock = lock.tryLock()); |
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} |
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} |
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|
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// A simple recursive task for testing |
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static final class FibTask extends RecursiveTask<Integer> { |
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final int number; |
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FibTask(int n) { number = n; } |
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public Integer compute() { |
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int n = number; |
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if (n <= 1) |
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return n; |
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FibTask f1 = new FibTask(n - 1); |
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f1.fork(); |
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return (new FibTask(n - 2)).compute() + f1.join(); |
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} |
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} |
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|
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// A failing task for testing |
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static final class FailingTask extends ForkJoinTask<Void> { |
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public final Void getRawResult() { return null; } |
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protected final void setRawResult(Void mustBeNull) { } |
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protected final boolean exec() { throw new Error(); } |
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FailingTask() {} |
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} |
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|
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// Fib needlessly using locking to test ManagedBlockers |
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static final class LockingFibTask extends RecursiveTask<Integer> { |
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final int number; |
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final ManagedLocker locker; |
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final ReentrantLock lock; |
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LockingFibTask(int n, ManagedLocker locker, ReentrantLock lock) { |
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number = n; |
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this.locker = locker; |
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this.lock = lock; |
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} |
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public Integer compute() { |
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int n; |
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LockingFibTask f1 = null; |
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LockingFibTask f2 = null; |
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locker.block(); |
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n = number; |
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if (n > 1) { |
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f1 = new LockingFibTask(n - 1, locker, lock); |
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f2 = new LockingFibTask(n - 2, locker, lock); |
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} |
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lock.unlock(); |
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if (n <= 1) |
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return n; |
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else { |
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f1.fork(); |
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return f2.compute() + f1.join(); |
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} |
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} |
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} |
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|
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/** |
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* Successfully constructed pool reports default factory, |
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* parallelism and async mode policies, no active threads or |
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* tasks, and quiescent running state. |
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*/ |
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public void testDefaultInitialState() { |
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ForkJoinPool p = new ForkJoinPool(1); |
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try { |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getStealCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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} finally { |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* Constructor throws if size argument is less than zero |
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*/ |
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public void testConstructor1() { |
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try { |
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new ForkJoinPool(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* Constructor throws if factory argument is null |
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*/ |
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public void testConstructor2() { |
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try { |
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new ForkJoinPool(1, null, null, false); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* 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(); |
268 |
}}; |
269 |
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()); |
273 |
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 { |
279 |
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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/** |
285 |
* After invoking a single task, isQuiescent eventually becomes |
286 |
* true, at which time queues are empty, threads are not active, |
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* the task has completed successfully, and construction |
288 |
* parameters continue to hold |
289 |
*/ |
290 |
public void testIsQuiescent() throws Exception { |
291 |
ForkJoinPool p = new ForkJoinPool(2); |
292 |
try { |
293 |
assertTrue(p.isQuiescent()); |
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long startTime = System.nanoTime(); |
295 |
FibTask f = new FibTask(20); |
296 |
p.invoke(f); |
297 |
assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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while (! p.isQuiescent()) { |
300 |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
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throw new AssertionFailedError("timed out"); |
302 |
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(); |
307 |
} |
308 |
|
309 |
assertTrue(p.isQuiescent()); |
310 |
assertFalse(p.getAsyncMode()); |
311 |
assertEquals(0, p.getActiveThreadCount()); |
312 |
assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
314 |
assertFalse(p.hasQueuedSubmissions()); |
315 |
assertFalse(p.isShutdown()); |
316 |
assertFalse(p.isTerminating()); |
317 |
assertFalse(p.isTerminated()); |
318 |
assertTrue(f.isDone()); |
319 |
assertEquals(6765, (int) f.get()); |
320 |
} finally { |
321 |
joinPool(p); |
322 |
} |
323 |
} |
324 |
|
325 |
/** |
326 |
* Completed submit(ForkJoinTask) returns result |
327 |
*/ |
328 |
public void testSubmitForkJoinTask() throws Throwable { |
329 |
ForkJoinPool p = new ForkJoinPool(1); |
330 |
try { |
331 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
332 |
assertEquals(21, (int) f.get()); |
333 |
} finally { |
334 |
joinPool(p); |
335 |
} |
336 |
} |
337 |
|
338 |
/** |
339 |
* A task submitted after shutdown is rejected |
340 |
*/ |
341 |
public void testSubmitAfterShutdown() { |
342 |
ForkJoinPool p = new ForkJoinPool(1); |
343 |
try { |
344 |
p.shutdown(); |
345 |
assertTrue(p.isShutdown()); |
346 |
try { |
347 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
348 |
shouldThrow(); |
349 |
} catch (RejectedExecutionException success) {} |
350 |
} finally { |
351 |
joinPool(p); |
352 |
} |
353 |
} |
354 |
|
355 |
/** |
356 |
* Pool maintains parallelism when using ManagedBlocker |
357 |
*/ |
358 |
public void testBlockingForkJoinTask() throws Throwable { |
359 |
ForkJoinPool p = new ForkJoinPool(4); |
360 |
try { |
361 |
ReentrantLock lock = new ReentrantLock(); |
362 |
ManagedLocker locker = new ManagedLocker(lock); |
363 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
364 |
p.execute(f); |
365 |
assertEquals(6765, (int) f.get()); |
366 |
} finally { |
367 |
p.shutdownNow(); // don't wait out shutdown |
368 |
} |
369 |
} |
370 |
|
371 |
/** |
372 |
* pollSubmission returns unexecuted submitted task, if present |
373 |
*/ |
374 |
public void testPollSubmission() { |
375 |
final CountDownLatch done = new CountDownLatch(1); |
376 |
SubFJP p = new SubFJP(); |
377 |
try { |
378 |
ForkJoinTask a = p.submit(awaiter(done)); |
379 |
ForkJoinTask b = p.submit(awaiter(done)); |
380 |
ForkJoinTask c = p.submit(awaiter(done)); |
381 |
ForkJoinTask r = p.pollSubmission(); |
382 |
assertTrue(r == a || r == b || r == c); |
383 |
assertFalse(r.isDone()); |
384 |
} finally { |
385 |
done.countDown(); |
386 |
joinPool(p); |
387 |
} |
388 |
} |
389 |
|
390 |
/** |
391 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
392 |
*/ |
393 |
public void testDrainTasksTo() { |
394 |
final CountDownLatch done = new CountDownLatch(1); |
395 |
SubFJP p = new SubFJP(); |
396 |
try { |
397 |
ForkJoinTask a = p.submit(awaiter(done)); |
398 |
ForkJoinTask b = p.submit(awaiter(done)); |
399 |
ForkJoinTask c = p.submit(awaiter(done)); |
400 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
401 |
p.drainTasksTo(al); |
402 |
assertTrue(al.size() > 0); |
403 |
for (ForkJoinTask r : al) { |
404 |
assertTrue(r == a || r == b || r == c); |
405 |
assertFalse(r.isDone()); |
406 |
} |
407 |
} finally { |
408 |
done.countDown(); |
409 |
joinPool(p); |
410 |
} |
411 |
} |
412 |
|
413 |
// FJ Versions of AbstractExecutorService tests |
414 |
|
415 |
/** |
416 |
* execute(runnable) runs it to completion |
417 |
*/ |
418 |
public void testExecuteRunnable() throws Throwable { |
419 |
ExecutorService e = new ForkJoinPool(1); |
420 |
try { |
421 |
final AtomicBoolean done = new AtomicBoolean(false); |
422 |
CheckedRunnable task = new CheckedRunnable() { |
423 |
public void realRun() { |
424 |
done.set(true); |
425 |
}}; |
426 |
Future<?> future = e.submit(task); |
427 |
assertNull(future.get()); |
428 |
assertNull(future.get(0, MILLISECONDS)); |
429 |
assertTrue(done.get()); |
430 |
assertTrue(future.isDone()); |
431 |
assertFalse(future.isCancelled()); |
432 |
} finally { |
433 |
joinPool(e); |
434 |
} |
435 |
} |
436 |
|
437 |
/** |
438 |
* Completed submit(callable) returns result |
439 |
*/ |
440 |
public void testSubmitCallable() throws Throwable { |
441 |
ExecutorService e = new ForkJoinPool(1); |
442 |
try { |
443 |
Future<String> future = e.submit(new StringTask()); |
444 |
assertSame(TEST_STRING, future.get()); |
445 |
assertTrue(future.isDone()); |
446 |
assertFalse(future.isCancelled()); |
447 |
} finally { |
448 |
joinPool(e); |
449 |
} |
450 |
} |
451 |
|
452 |
/** |
453 |
* Completed submit(runnable) returns successfully |
454 |
*/ |
455 |
public void testSubmitRunnable() throws Throwable { |
456 |
ExecutorService e = new ForkJoinPool(1); |
457 |
try { |
458 |
Future<?> future = e.submit(new NoOpRunnable()); |
459 |
assertNull(future.get()); |
460 |
assertTrue(future.isDone()); |
461 |
assertFalse(future.isCancelled()); |
462 |
} finally { |
463 |
joinPool(e); |
464 |
} |
465 |
} |
466 |
|
467 |
/** |
468 |
* Completed submit(runnable, result) returns result |
469 |
*/ |
470 |
public void testSubmitRunnable2() throws Throwable { |
471 |
ExecutorService e = new ForkJoinPool(1); |
472 |
try { |
473 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
474 |
assertSame(TEST_STRING, future.get()); |
475 |
assertTrue(future.isDone()); |
476 |
assertFalse(future.isCancelled()); |
477 |
} finally { |
478 |
joinPool(e); |
479 |
} |
480 |
} |
481 |
|
482 |
/** |
483 |
* A submitted privileged action runs to completion |
484 |
*/ |
485 |
public void testSubmitPrivilegedAction() throws Exception { |
486 |
final Callable callable = Executors.callable(new PrivilegedAction() { |
487 |
public Object run() { return TEST_STRING; }}); |
488 |
Runnable r = new CheckedRunnable() { |
489 |
public void realRun() throws Exception { |
490 |
ExecutorService e = new ForkJoinPool(1); |
491 |
try { |
492 |
Future future = e.submit(callable); |
493 |
assertSame(TEST_STRING, future.get()); |
494 |
} finally { |
495 |
joinPool(e); |
496 |
} |
497 |
}}; |
498 |
|
499 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
500 |
} |
501 |
|
502 |
/** |
503 |
* A submitted privileged exception action runs to completion |
504 |
*/ |
505 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
506 |
final Callable callable = |
507 |
Executors.callable(new PrivilegedExceptionAction() { |
508 |
public Object run() { return TEST_STRING; }}); |
509 |
Runnable r = new CheckedRunnable() { |
510 |
public void realRun() throws Exception { |
511 |
ExecutorService e = new ForkJoinPool(1); |
512 |
try { |
513 |
Future future = e.submit(callable); |
514 |
assertSame(TEST_STRING, future.get()); |
515 |
} finally { |
516 |
joinPool(e); |
517 |
} |
518 |
}}; |
519 |
|
520 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
521 |
} |
522 |
|
523 |
/** |
524 |
* A submitted failed privileged exception action reports exception |
525 |
*/ |
526 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
527 |
final Callable callable = |
528 |
Executors.callable(new PrivilegedExceptionAction() { |
529 |
public Object run() { throw new IndexOutOfBoundsException(); }}); |
530 |
Runnable r = new CheckedRunnable() { |
531 |
public void realRun() throws Exception { |
532 |
ExecutorService e = new ForkJoinPool(1); |
533 |
try { |
534 |
Future future = e.submit(callable); |
535 |
try { |
536 |
future.get(); |
537 |
shouldThrow(); |
538 |
} catch (ExecutionException success) { |
539 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
540 |
} |
541 |
} finally { |
542 |
joinPool(e); |
543 |
} |
544 |
}}; |
545 |
|
546 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
547 |
} |
548 |
|
549 |
/** |
550 |
* execute(null runnable) throws NullPointerException |
551 |
*/ |
552 |
public void testExecuteNullRunnable() { |
553 |
ExecutorService e = new ForkJoinPool(1); |
554 |
try { |
555 |
Future<?> future = e.submit((Runnable) null); |
556 |
shouldThrow(); |
557 |
} catch (NullPointerException success) { |
558 |
} finally { |
559 |
joinPool(e); |
560 |
} |
561 |
} |
562 |
|
563 |
/** |
564 |
* submit(null callable) throws NullPointerException |
565 |
*/ |
566 |
public void testSubmitNullCallable() { |
567 |
ExecutorService e = new ForkJoinPool(1); |
568 |
try { |
569 |
Future<String> future = e.submit((Callable) null); |
570 |
shouldThrow(); |
571 |
} catch (NullPointerException success) { |
572 |
} finally { |
573 |
joinPool(e); |
574 |
} |
575 |
} |
576 |
|
577 |
/** |
578 |
* submit(callable).get() throws InterruptedException if interrupted |
579 |
*/ |
580 |
public void testInterruptedSubmit() throws InterruptedException { |
581 |
final CountDownLatch submitted = new CountDownLatch(1); |
582 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
583 |
final ExecutorService p = new ForkJoinPool(1); |
584 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
585 |
public Void realCall() throws InterruptedException { |
586 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
587 |
return null; |
588 |
}}; |
589 |
try { |
590 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
591 |
public void realRun() throws Exception { |
592 |
Future<Void> future = p.submit(awaiter); |
593 |
submitted.countDown(); |
594 |
future.get(); |
595 |
}}); |
596 |
t.start(); |
597 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
598 |
t.interrupt(); |
599 |
t.join(); |
600 |
} finally { |
601 |
quittingTime.countDown(); |
602 |
joinPool(p); |
603 |
} |
604 |
} |
605 |
|
606 |
/** |
607 |
* get of submit(callable) throws ExecutionException if callable |
608 |
* throws exception |
609 |
*/ |
610 |
public void testSubmitEE() throws Throwable { |
611 |
ForkJoinPool p = new ForkJoinPool(1); |
612 |
try { |
613 |
p.submit(new Callable() { |
614 |
public Object call() { throw new ArithmeticException(); }}) |
615 |
.get(); |
616 |
shouldThrow(); |
617 |
} catch (ExecutionException success) { |
618 |
assertTrue(success.getCause() instanceof ArithmeticException); |
619 |
} finally { |
620 |
joinPool(p); |
621 |
} |
622 |
} |
623 |
|
624 |
/** |
625 |
* invokeAny(null) throws NullPointerException |
626 |
*/ |
627 |
public void testInvokeAny1() throws Throwable { |
628 |
ExecutorService e = new ForkJoinPool(1); |
629 |
try { |
630 |
e.invokeAny(null); |
631 |
shouldThrow(); |
632 |
} catch (NullPointerException success) { |
633 |
} finally { |
634 |
joinPool(e); |
635 |
} |
636 |
} |
637 |
|
638 |
/** |
639 |
* invokeAny(empty collection) throws IllegalArgumentException |
640 |
*/ |
641 |
public void testInvokeAny2() throws Throwable { |
642 |
ExecutorService e = new ForkJoinPool(1); |
643 |
try { |
644 |
e.invokeAny(new ArrayList<Callable<String>>()); |
645 |
shouldThrow(); |
646 |
} catch (IllegalArgumentException success) { |
647 |
} finally { |
648 |
joinPool(e); |
649 |
} |
650 |
} |
651 |
|
652 |
/** |
653 |
* invokeAny(c) throws NullPointerException if c has a single null element |
654 |
*/ |
655 |
public void testInvokeAny3() throws Throwable { |
656 |
ExecutorService e = new ForkJoinPool(1); |
657 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
658 |
l.add(null); |
659 |
try { |
660 |
e.invokeAny(l); |
661 |
shouldThrow(); |
662 |
} catch (NullPointerException success) { |
663 |
} finally { |
664 |
joinPool(e); |
665 |
} |
666 |
} |
667 |
|
668 |
/** |
669 |
* invokeAny(c) throws NullPointerException if c has null elements |
670 |
*/ |
671 |
public void testInvokeAny4() throws Throwable { |
672 |
CountDownLatch latch = new CountDownLatch(1); |
673 |
ExecutorService e = new ForkJoinPool(1); |
674 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
675 |
l.add(latchAwaitingStringTask(latch)); |
676 |
l.add(null); |
677 |
try { |
678 |
e.invokeAny(l); |
679 |
shouldThrow(); |
680 |
} catch (NullPointerException success) { |
681 |
} finally { |
682 |
latch.countDown(); |
683 |
joinPool(e); |
684 |
} |
685 |
} |
686 |
|
687 |
/** |
688 |
* invokeAny(c) throws ExecutionException if no task in c completes |
689 |
*/ |
690 |
public void testInvokeAny5() throws Throwable { |
691 |
ExecutorService e = new ForkJoinPool(1); |
692 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
693 |
l.add(new NPETask()); |
694 |
try { |
695 |
e.invokeAny(l); |
696 |
shouldThrow(); |
697 |
} catch (ExecutionException success) { |
698 |
assertTrue(success.getCause() instanceof NullPointerException); |
699 |
} finally { |
700 |
joinPool(e); |
701 |
} |
702 |
} |
703 |
|
704 |
/** |
705 |
* invokeAny(c) returns result of some task in c if at least one completes |
706 |
*/ |
707 |
public void testInvokeAny6() throws Throwable { |
708 |
ExecutorService e = new ForkJoinPool(1); |
709 |
try { |
710 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
711 |
l.add(new StringTask()); |
712 |
l.add(new StringTask()); |
713 |
String result = e.invokeAny(l); |
714 |
assertSame(TEST_STRING, result); |
715 |
} finally { |
716 |
joinPool(e); |
717 |
} |
718 |
} |
719 |
|
720 |
/** |
721 |
* invokeAll(null) throws NullPointerException |
722 |
*/ |
723 |
public void testInvokeAll1() throws Throwable { |
724 |
ExecutorService e = new ForkJoinPool(1); |
725 |
try { |
726 |
e.invokeAll(null); |
727 |
shouldThrow(); |
728 |
} catch (NullPointerException success) { |
729 |
} finally { |
730 |
joinPool(e); |
731 |
} |
732 |
} |
733 |
|
734 |
/** |
735 |
* invokeAll(empty collection) returns empty collection |
736 |
*/ |
737 |
public void testInvokeAll2() throws InterruptedException { |
738 |
ExecutorService e = new ForkJoinPool(1); |
739 |
try { |
740 |
List<Future<String>> r |
741 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
742 |
assertTrue(r.isEmpty()); |
743 |
} finally { |
744 |
joinPool(e); |
745 |
} |
746 |
} |
747 |
|
748 |
/** |
749 |
* invokeAll(c) throws NullPointerException if c has null elements |
750 |
*/ |
751 |
public void testInvokeAll3() throws InterruptedException { |
752 |
ExecutorService e = new ForkJoinPool(1); |
753 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
754 |
l.add(new StringTask()); |
755 |
l.add(null); |
756 |
try { |
757 |
e.invokeAll(l); |
758 |
shouldThrow(); |
759 |
} catch (NullPointerException success) { |
760 |
} finally { |
761 |
joinPool(e); |
762 |
} |
763 |
} |
764 |
|
765 |
/** |
766 |
* get of returned element of invokeAll(c) throws |
767 |
* ExecutionException on failed task |
768 |
*/ |
769 |
public void testInvokeAll4() throws Throwable { |
770 |
ExecutorService e = new ForkJoinPool(1); |
771 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
772 |
l.add(new NPETask()); |
773 |
List<Future<String>> futures = e.invokeAll(l); |
774 |
assertEquals(1, futures.size()); |
775 |
try { |
776 |
futures.get(0).get(); |
777 |
shouldThrow(); |
778 |
} catch (ExecutionException success) { |
779 |
assertTrue(success.getCause() instanceof NullPointerException); |
780 |
} finally { |
781 |
joinPool(e); |
782 |
} |
783 |
} |
784 |
|
785 |
/** |
786 |
* invokeAll(c) returns results of all completed tasks in c |
787 |
*/ |
788 |
public void testInvokeAll5() throws Throwable { |
789 |
ExecutorService e = new ForkJoinPool(1); |
790 |
try { |
791 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
792 |
l.add(new StringTask()); |
793 |
l.add(new StringTask()); |
794 |
List<Future<String>> futures = e.invokeAll(l); |
795 |
assertEquals(2, futures.size()); |
796 |
for (Future<String> future : futures) |
797 |
assertSame(TEST_STRING, future.get()); |
798 |
} finally { |
799 |
joinPool(e); |
800 |
} |
801 |
} |
802 |
|
803 |
/** |
804 |
* timed invokeAny(null) throws NullPointerException |
805 |
*/ |
806 |
public void testTimedInvokeAny1() throws Throwable { |
807 |
ExecutorService e = new ForkJoinPool(1); |
808 |
try { |
809 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
810 |
shouldThrow(); |
811 |
} catch (NullPointerException success) { |
812 |
} finally { |
813 |
joinPool(e); |
814 |
} |
815 |
} |
816 |
|
817 |
/** |
818 |
* timed invokeAny(null time unit) throws NullPointerException |
819 |
*/ |
820 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
821 |
ExecutorService e = new ForkJoinPool(1); |
822 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
823 |
l.add(new StringTask()); |
824 |
try { |
825 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
826 |
shouldThrow(); |
827 |
} catch (NullPointerException success) { |
828 |
} finally { |
829 |
joinPool(e); |
830 |
} |
831 |
} |
832 |
|
833 |
/** |
834 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
835 |
*/ |
836 |
public void testTimedInvokeAny2() throws Throwable { |
837 |
ExecutorService e = new ForkJoinPool(1); |
838 |
try { |
839 |
e.invokeAny(new ArrayList<Callable<String>>(), |
840 |
MEDIUM_DELAY_MS, MILLISECONDS); |
841 |
shouldThrow(); |
842 |
} catch (IllegalArgumentException success) { |
843 |
} finally { |
844 |
joinPool(e); |
845 |
} |
846 |
} |
847 |
|
848 |
/** |
849 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
850 |
*/ |
851 |
public void testTimedInvokeAny3() throws Throwable { |
852 |
CountDownLatch latch = new CountDownLatch(1); |
853 |
ExecutorService e = new ForkJoinPool(1); |
854 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
855 |
l.add(latchAwaitingStringTask(latch)); |
856 |
l.add(null); |
857 |
try { |
858 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
859 |
shouldThrow(); |
860 |
} catch (NullPointerException success) { |
861 |
} finally { |
862 |
latch.countDown(); |
863 |
joinPool(e); |
864 |
} |
865 |
} |
866 |
|
867 |
/** |
868 |
* timed invokeAny(c) throws ExecutionException if no task completes |
869 |
*/ |
870 |
public void testTimedInvokeAny4() throws Throwable { |
871 |
ExecutorService e = new ForkJoinPool(1); |
872 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
873 |
l.add(new NPETask()); |
874 |
try { |
875 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
876 |
shouldThrow(); |
877 |
} catch (ExecutionException success) { |
878 |
assertTrue(success.getCause() instanceof NullPointerException); |
879 |
} finally { |
880 |
joinPool(e); |
881 |
} |
882 |
} |
883 |
|
884 |
/** |
885 |
* timed invokeAny(c) returns result of some task in c |
886 |
*/ |
887 |
public void testTimedInvokeAny5() throws Throwable { |
888 |
ExecutorService e = new ForkJoinPool(1); |
889 |
try { |
890 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
891 |
l.add(new StringTask()); |
892 |
l.add(new StringTask()); |
893 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
894 |
assertSame(TEST_STRING, result); |
895 |
} finally { |
896 |
joinPool(e); |
897 |
} |
898 |
} |
899 |
|
900 |
/** |
901 |
* timed invokeAll(null) throws NullPointerException |
902 |
*/ |
903 |
public void testTimedInvokeAll1() throws Throwable { |
904 |
ExecutorService e = new ForkJoinPool(1); |
905 |
try { |
906 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
907 |
shouldThrow(); |
908 |
} catch (NullPointerException success) { |
909 |
} finally { |
910 |
joinPool(e); |
911 |
} |
912 |
} |
913 |
|
914 |
/** |
915 |
* timed invokeAll(null time unit) throws NullPointerException |
916 |
*/ |
917 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
918 |
ExecutorService e = new ForkJoinPool(1); |
919 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
920 |
l.add(new StringTask()); |
921 |
try { |
922 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
923 |
shouldThrow(); |
924 |
} catch (NullPointerException success) { |
925 |
} finally { |
926 |
joinPool(e); |
927 |
} |
928 |
} |
929 |
|
930 |
/** |
931 |
* timed invokeAll(empty collection) returns empty collection |
932 |
*/ |
933 |
public void testTimedInvokeAll2() throws InterruptedException { |
934 |
ExecutorService e = new ForkJoinPool(1); |
935 |
try { |
936 |
List<Future<String>> r |
937 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
938 |
MEDIUM_DELAY_MS, MILLISECONDS); |
939 |
assertTrue(r.isEmpty()); |
940 |
} finally { |
941 |
joinPool(e); |
942 |
} |
943 |
} |
944 |
|
945 |
/** |
946 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
947 |
*/ |
948 |
public void testTimedInvokeAll3() throws InterruptedException { |
949 |
ExecutorService e = new ForkJoinPool(1); |
950 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
951 |
l.add(new StringTask()); |
952 |
l.add(null); |
953 |
try { |
954 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
955 |
shouldThrow(); |
956 |
} catch (NullPointerException success) { |
957 |
} finally { |
958 |
joinPool(e); |
959 |
} |
960 |
} |
961 |
|
962 |
/** |
963 |
* get of returned element of invokeAll(c) throws exception on failed task |
964 |
*/ |
965 |
public void testTimedInvokeAll4() throws Throwable { |
966 |
ExecutorService e = new ForkJoinPool(1); |
967 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
968 |
l.add(new NPETask()); |
969 |
List<Future<String>> futures |
970 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
971 |
assertEquals(1, futures.size()); |
972 |
try { |
973 |
futures.get(0).get(); |
974 |
shouldThrow(); |
975 |
} catch (ExecutionException success) { |
976 |
assertTrue(success.getCause() instanceof NullPointerException); |
977 |
} finally { |
978 |
joinPool(e); |
979 |
} |
980 |
} |
981 |
|
982 |
/** |
983 |
* timed invokeAll(c) returns results of all completed tasks in c |
984 |
*/ |
985 |
public void testTimedInvokeAll5() throws Throwable { |
986 |
ExecutorService e = new ForkJoinPool(1); |
987 |
try { |
988 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
989 |
l.add(new StringTask()); |
990 |
l.add(new StringTask()); |
991 |
List<Future<String>> futures |
992 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
993 |
assertEquals(2, futures.size()); |
994 |
for (Future<String> future : futures) |
995 |
assertSame(TEST_STRING, future.get()); |
996 |
} finally { |
997 |
joinPool(e); |
998 |
} |
999 |
} |
1000 |
|
1001 |
} |