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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 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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* setUncaughtExceptionHandler changes handler for uncaught exceptions. |
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* |
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* Additionally tests: Overriding ForkJoinWorkerThread.onStart |
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* performs its defined action |
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*/ |
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public void testSetUncaughtExceptionHandler() throws InterruptedException { |
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final CountDownLatch uehInvoked = new CountDownLatch(1); |
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final Thread.UncaughtExceptionHandler eh = |
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new Thread.UncaughtExceptionHandler() { |
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public void uncaughtException(Thread t, Throwable e) { |
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uehInvoked.countDown(); |
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}}; |
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ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(), |
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eh, false); |
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try { |
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assertSame(eh, p.getUncaughtExceptionHandler()); |
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p.execute(new FibTask(8)); |
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assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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} finally { |
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p.shutdownNow(); // failure might have prevented processing task |
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joinPool(p); |
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} |
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} |
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|
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/** |
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* After invoking a single task, isQuiescent eventually becomes |
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* true, at which time queues are empty, threads are not active, |
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* the task has completed successfully, and construction |
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* parameters continue to hold |
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*/ |
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public void testisQuiescent() throws Exception { |
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ForkJoinPool p = new ForkJoinPool(2); |
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try { |
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assertTrue(p.isQuiescent()); |
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long startTime = System.nanoTime(); |
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FibTask f = new FibTask(20); |
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p.invoke(f); |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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while (! p.isQuiescent()) { |
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if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
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throw new AssertionFailedError("timed out"); |
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assertFalse(p.getAsyncMode()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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Thread.yield(); |
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} |
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|
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
286 |
assertFalse(p.isTerminated()); |
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assertTrue(f.isDone()); |
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assertEquals(6765, (int) f.get()); |
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} finally { |
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joinPool(p); |
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} |
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} |
293 |
|
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/** |
295 |
* Completed submit(ForkJoinTask) returns result |
296 |
*/ |
297 |
public void testSubmitForkJoinTask() throws Throwable { |
298 |
ForkJoinPool p = new ForkJoinPool(1); |
299 |
try { |
300 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
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assertEquals(21, (int) f.get()); |
302 |
} finally { |
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joinPool(p); |
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} |
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} |
306 |
|
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/** |
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* A task submitted after shutdown is rejected |
309 |
*/ |
310 |
public void testSubmitAfterShutdown() { |
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ForkJoinPool p = new ForkJoinPool(1); |
312 |
try { |
313 |
p.shutdown(); |
314 |
assertTrue(p.isShutdown()); |
315 |
try { |
316 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
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shouldThrow(); |
318 |
} catch (RejectedExecutionException success) {} |
319 |
} finally { |
320 |
joinPool(p); |
321 |
} |
322 |
} |
323 |
|
324 |
/** |
325 |
* Pool maintains parallelism when using ManagedBlocker |
326 |
*/ |
327 |
public void testBlockingForkJoinTask() throws Throwable { |
328 |
ForkJoinPool p = new ForkJoinPool(4); |
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try { |
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ReentrantLock lock = new ReentrantLock(); |
331 |
ManagedLocker locker = new ManagedLocker(lock); |
332 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
333 |
p.execute(f); |
334 |
assertEquals(6765, (int) f.get()); |
335 |
} finally { |
336 |
p.shutdownNow(); // don't wait out shutdown |
337 |
} |
338 |
} |
339 |
|
340 |
/** |
341 |
* pollSubmission returns unexecuted submitted task, if present |
342 |
*/ |
343 |
public void testPollSubmission() { |
344 |
final CountDownLatch done = new CountDownLatch(1); |
345 |
SubFJP p = new SubFJP(); |
346 |
try { |
347 |
ForkJoinTask a = p.submit(awaiter(done)); |
348 |
ForkJoinTask b = p.submit(awaiter(done)); |
349 |
ForkJoinTask c = p.submit(awaiter(done)); |
350 |
ForkJoinTask r = p.pollSubmission(); |
351 |
assertTrue(r == a || r == b || r == c); |
352 |
assertFalse(r.isDone()); |
353 |
} finally { |
354 |
done.countDown(); |
355 |
joinPool(p); |
356 |
} |
357 |
} |
358 |
|
359 |
/** |
360 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
361 |
*/ |
362 |
public void testDrainTasksTo() { |
363 |
final CountDownLatch done = new CountDownLatch(1); |
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SubFJP p = new SubFJP(); |
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try { |
366 |
ForkJoinTask a = p.submit(awaiter(done)); |
367 |
ForkJoinTask b = p.submit(awaiter(done)); |
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ForkJoinTask c = p.submit(awaiter(done)); |
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ArrayList<ForkJoinTask> al = new ArrayList(); |
370 |
p.drainTasksTo(al); |
371 |
assertTrue(al.size() > 0); |
372 |
for (ForkJoinTask r : al) { |
373 |
assertTrue(r == a || r == b || r == c); |
374 |
assertFalse(r.isDone()); |
375 |
} |
376 |
} finally { |
377 |
done.countDown(); |
378 |
joinPool(p); |
379 |
} |
380 |
} |
381 |
|
382 |
// FJ Versions of AbstractExecutorService tests |
383 |
|
384 |
/** |
385 |
* execute(runnable) runs it to completion |
386 |
*/ |
387 |
public void testExecuteRunnable() throws Throwable { |
388 |
ExecutorService e = new ForkJoinPool(1); |
389 |
try { |
390 |
final AtomicBoolean done = new AtomicBoolean(false); |
391 |
CheckedRunnable task = new CheckedRunnable() { |
392 |
public void realRun() { |
393 |
done.set(true); |
394 |
}}; |
395 |
Future<?> future = e.submit(task); |
396 |
assertNull(future.get()); |
397 |
assertNull(future.get(0, MILLISECONDS)); |
398 |
assertTrue(done.get()); |
399 |
assertTrue(future.isDone()); |
400 |
assertFalse(future.isCancelled()); |
401 |
} finally { |
402 |
joinPool(e); |
403 |
} |
404 |
} |
405 |
|
406 |
/** |
407 |
* Completed submit(callable) returns result |
408 |
*/ |
409 |
public void testSubmitCallable() throws Throwable { |
410 |
ExecutorService e = new ForkJoinPool(1); |
411 |
try { |
412 |
Future<String> future = e.submit(new StringTask()); |
413 |
assertSame(TEST_STRING, future.get()); |
414 |
assertTrue(future.isDone()); |
415 |
assertFalse(future.isCancelled()); |
416 |
} finally { |
417 |
joinPool(e); |
418 |
} |
419 |
} |
420 |
|
421 |
/** |
422 |
* Completed submit(runnable) returns successfully |
423 |
*/ |
424 |
public void testSubmitRunnable() throws Throwable { |
425 |
ExecutorService e = new ForkJoinPool(1); |
426 |
try { |
427 |
Future<?> future = e.submit(new NoOpRunnable()); |
428 |
assertNull(future.get()); |
429 |
assertTrue(future.isDone()); |
430 |
assertFalse(future.isCancelled()); |
431 |
} finally { |
432 |
joinPool(e); |
433 |
} |
434 |
} |
435 |
|
436 |
/** |
437 |
* Completed submit(runnable, result) returns result |
438 |
*/ |
439 |
public void testSubmitRunnable2() throws Throwable { |
440 |
ExecutorService e = new ForkJoinPool(1); |
441 |
try { |
442 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
443 |
assertSame(TEST_STRING, future.get()); |
444 |
assertTrue(future.isDone()); |
445 |
assertFalse(future.isCancelled()); |
446 |
} finally { |
447 |
joinPool(e); |
448 |
} |
449 |
} |
450 |
|
451 |
/** |
452 |
* A submitted privileged action runs to completion |
453 |
*/ |
454 |
public void testSubmitPrivilegedAction() throws Exception { |
455 |
Runnable r = new CheckedRunnable() { |
456 |
public void realRun() throws Exception { |
457 |
ExecutorService e = new ForkJoinPool(1); |
458 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
459 |
public Object run() { |
460 |
return TEST_STRING; |
461 |
}})); |
462 |
|
463 |
assertSame(TEST_STRING, future.get()); |
464 |
}}; |
465 |
|
466 |
runWithPermissions(r, |
467 |
new RuntimePermission("modifyThread")); |
468 |
} |
469 |
|
470 |
/** |
471 |
* A submitted privileged exception action runs to completion |
472 |
*/ |
473 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
474 |
Runnable r = new CheckedRunnable() { |
475 |
public void realRun() throws Exception { |
476 |
ExecutorService e = new ForkJoinPool(1); |
477 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
478 |
public Object run() { |
479 |
return TEST_STRING; |
480 |
}})); |
481 |
|
482 |
assertSame(TEST_STRING, future.get()); |
483 |
}}; |
484 |
|
485 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
486 |
} |
487 |
|
488 |
/** |
489 |
* A submitted failed privileged exception action reports exception |
490 |
*/ |
491 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
492 |
Runnable r = new CheckedRunnable() { |
493 |
public void realRun() throws Exception { |
494 |
ExecutorService e = new ForkJoinPool(1); |
495 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
496 |
public Object run() throws Exception { |
497 |
throw new IndexOutOfBoundsException(); |
498 |
}})); |
499 |
|
500 |
try { |
501 |
future.get(); |
502 |
shouldThrow(); |
503 |
} catch (ExecutionException success) { |
504 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
505 |
}}}; |
506 |
|
507 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
508 |
} |
509 |
|
510 |
/** |
511 |
* execute(null runnable) throws NullPointerException |
512 |
*/ |
513 |
public void testExecuteNullRunnable() { |
514 |
ExecutorService e = new ForkJoinPool(1); |
515 |
try { |
516 |
Future<?> future = e.submit((Runnable) null); |
517 |
shouldThrow(); |
518 |
} catch (NullPointerException success) { |
519 |
} finally { |
520 |
joinPool(e); |
521 |
} |
522 |
} |
523 |
|
524 |
/** |
525 |
* submit(null callable) throws NullPointerException |
526 |
*/ |
527 |
public void testSubmitNullCallable() { |
528 |
ExecutorService e = new ForkJoinPool(1); |
529 |
try { |
530 |
Future<String> future = e.submit((Callable) null); |
531 |
shouldThrow(); |
532 |
} catch (NullPointerException success) { |
533 |
} finally { |
534 |
joinPool(e); |
535 |
} |
536 |
} |
537 |
|
538 |
/** |
539 |
* submit(callable).get() throws InterruptedException if interrupted |
540 |
*/ |
541 |
public void testInterruptedSubmit() throws InterruptedException { |
542 |
final CountDownLatch submitted = new CountDownLatch(1); |
543 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
544 |
final ExecutorService p = new ForkJoinPool(1); |
545 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
546 |
public Void realCall() throws InterruptedException { |
547 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
548 |
return null; |
549 |
}}; |
550 |
try { |
551 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
552 |
public void realRun() throws Exception { |
553 |
Future<Void> future = p.submit(awaiter); |
554 |
submitted.countDown(); |
555 |
future.get(); |
556 |
}}); |
557 |
t.start(); |
558 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
559 |
t.interrupt(); |
560 |
t.join(); |
561 |
} finally { |
562 |
quittingTime.countDown(); |
563 |
joinPool(p); |
564 |
} |
565 |
} |
566 |
|
567 |
/** |
568 |
* get of submit(callable) throws ExecutionException if callable |
569 |
* throws exception |
570 |
*/ |
571 |
public void testSubmitEE() throws Throwable { |
572 |
ForkJoinPool p = new ForkJoinPool(1); |
573 |
try { |
574 |
p.submit(new Callable() { |
575 |
public Object call() { |
576 |
int i = 5/0; |
577 |
return Boolean.TRUE; |
578 |
}}).get(); |
579 |
shouldThrow(); |
580 |
} catch (ExecutionException success) { |
581 |
assertTrue(success.getCause() instanceof ArithmeticException); |
582 |
} finally { |
583 |
joinPool(p); |
584 |
} |
585 |
} |
586 |
|
587 |
/** |
588 |
* invokeAny(null) throws NullPointerException |
589 |
*/ |
590 |
public void testInvokeAny1() throws Throwable { |
591 |
ExecutorService e = new ForkJoinPool(1); |
592 |
try { |
593 |
e.invokeAny(null); |
594 |
shouldThrow(); |
595 |
} catch (NullPointerException success) { |
596 |
} finally { |
597 |
joinPool(e); |
598 |
} |
599 |
} |
600 |
|
601 |
/** |
602 |
* invokeAny(empty collection) throws IllegalArgumentException |
603 |
*/ |
604 |
public void testInvokeAny2() throws Throwable { |
605 |
ExecutorService e = new ForkJoinPool(1); |
606 |
try { |
607 |
e.invokeAny(new ArrayList<Callable<String>>()); |
608 |
shouldThrow(); |
609 |
} catch (IllegalArgumentException success) { |
610 |
} finally { |
611 |
joinPool(e); |
612 |
} |
613 |
} |
614 |
|
615 |
/** |
616 |
* invokeAny(c) throws NullPointerException if c has a single null element |
617 |
*/ |
618 |
public void testInvokeAny3() throws Throwable { |
619 |
ExecutorService e = new ForkJoinPool(1); |
620 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
621 |
l.add(null); |
622 |
try { |
623 |
e.invokeAny(l); |
624 |
shouldThrow(); |
625 |
} catch (NullPointerException success) { |
626 |
} finally { |
627 |
joinPool(e); |
628 |
} |
629 |
} |
630 |
|
631 |
/** |
632 |
* invokeAny(c) throws NullPointerException if c has null elements |
633 |
*/ |
634 |
public void testInvokeAny4() throws Throwable { |
635 |
CountDownLatch latch = new CountDownLatch(1); |
636 |
ExecutorService e = new ForkJoinPool(1); |
637 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
638 |
l.add(latchAwaitingStringTask(latch)); |
639 |
l.add(null); |
640 |
try { |
641 |
e.invokeAny(l); |
642 |
shouldThrow(); |
643 |
} catch (NullPointerException success) { |
644 |
} finally { |
645 |
latch.countDown(); |
646 |
joinPool(e); |
647 |
} |
648 |
} |
649 |
|
650 |
/** |
651 |
* invokeAny(c) throws ExecutionException if no task in c completes |
652 |
*/ |
653 |
public void testInvokeAny5() throws Throwable { |
654 |
ExecutorService e = new ForkJoinPool(1); |
655 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
656 |
l.add(new NPETask()); |
657 |
try { |
658 |
e.invokeAny(l); |
659 |
shouldThrow(); |
660 |
} catch (ExecutionException success) { |
661 |
assertTrue(success.getCause() instanceof NullPointerException); |
662 |
} finally { |
663 |
joinPool(e); |
664 |
} |
665 |
} |
666 |
|
667 |
/** |
668 |
* invokeAny(c) returns result of some task in c if at least one completes |
669 |
*/ |
670 |
public void testInvokeAny6() throws Throwable { |
671 |
ExecutorService e = new ForkJoinPool(1); |
672 |
try { |
673 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
674 |
l.add(new StringTask()); |
675 |
l.add(new StringTask()); |
676 |
String result = e.invokeAny(l); |
677 |
assertSame(TEST_STRING, result); |
678 |
} finally { |
679 |
joinPool(e); |
680 |
} |
681 |
} |
682 |
|
683 |
/** |
684 |
* invokeAll(null) throws NullPointerException |
685 |
*/ |
686 |
public void testInvokeAll1() throws Throwable { |
687 |
ExecutorService e = new ForkJoinPool(1); |
688 |
try { |
689 |
e.invokeAll(null); |
690 |
shouldThrow(); |
691 |
} catch (NullPointerException success) { |
692 |
} finally { |
693 |
joinPool(e); |
694 |
} |
695 |
} |
696 |
|
697 |
/** |
698 |
* invokeAll(empty collection) returns empty collection |
699 |
*/ |
700 |
public void testInvokeAll2() throws InterruptedException { |
701 |
ExecutorService e = new ForkJoinPool(1); |
702 |
try { |
703 |
List<Future<String>> r |
704 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
705 |
assertTrue(r.isEmpty()); |
706 |
} finally { |
707 |
joinPool(e); |
708 |
} |
709 |
} |
710 |
|
711 |
/** |
712 |
* invokeAll(c) throws NullPointerException if c has null elements |
713 |
*/ |
714 |
public void testInvokeAll3() throws InterruptedException { |
715 |
ExecutorService e = new ForkJoinPool(1); |
716 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
717 |
l.add(new StringTask()); |
718 |
l.add(null); |
719 |
try { |
720 |
e.invokeAll(l); |
721 |
shouldThrow(); |
722 |
} catch (NullPointerException success) { |
723 |
} finally { |
724 |
joinPool(e); |
725 |
} |
726 |
} |
727 |
|
728 |
/** |
729 |
* get of returned element of invokeAll(c) throws |
730 |
* ExecutionException on failed task |
731 |
*/ |
732 |
public void testInvokeAll4() throws Throwable { |
733 |
ExecutorService e = new ForkJoinPool(1); |
734 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
735 |
l.add(new NPETask()); |
736 |
List<Future<String>> futures = e.invokeAll(l); |
737 |
assertEquals(1, futures.size()); |
738 |
try { |
739 |
futures.get(0).get(); |
740 |
shouldThrow(); |
741 |
} catch (ExecutionException success) { |
742 |
assertTrue(success.getCause() instanceof NullPointerException); |
743 |
} finally { |
744 |
joinPool(e); |
745 |
} |
746 |
} |
747 |
|
748 |
/** |
749 |
* invokeAll(c) returns results of all completed tasks in c |
750 |
*/ |
751 |
public void testInvokeAll5() throws Throwable { |
752 |
ExecutorService e = new ForkJoinPool(1); |
753 |
try { |
754 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
755 |
l.add(new StringTask()); |
756 |
l.add(new StringTask()); |
757 |
List<Future<String>> futures = e.invokeAll(l); |
758 |
assertEquals(2, futures.size()); |
759 |
for (Future<String> future : futures) |
760 |
assertSame(TEST_STRING, future.get()); |
761 |
} finally { |
762 |
joinPool(e); |
763 |
} |
764 |
} |
765 |
|
766 |
/** |
767 |
* timed invokeAny(null) throws NullPointerException |
768 |
*/ |
769 |
public void testTimedInvokeAny1() throws Throwable { |
770 |
ExecutorService e = new ForkJoinPool(1); |
771 |
try { |
772 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
773 |
shouldThrow(); |
774 |
} catch (NullPointerException success) { |
775 |
} finally { |
776 |
joinPool(e); |
777 |
} |
778 |
} |
779 |
|
780 |
/** |
781 |
* timed invokeAny(null time unit) throws NullPointerException |
782 |
*/ |
783 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
784 |
ExecutorService e = new ForkJoinPool(1); |
785 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
786 |
l.add(new StringTask()); |
787 |
try { |
788 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
789 |
shouldThrow(); |
790 |
} catch (NullPointerException success) { |
791 |
} finally { |
792 |
joinPool(e); |
793 |
} |
794 |
} |
795 |
|
796 |
/** |
797 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
798 |
*/ |
799 |
public void testTimedInvokeAny2() throws Throwable { |
800 |
ExecutorService e = new ForkJoinPool(1); |
801 |
try { |
802 |
e.invokeAny(new ArrayList<Callable<String>>(), |
803 |
MEDIUM_DELAY_MS, MILLISECONDS); |
804 |
shouldThrow(); |
805 |
} catch (IllegalArgumentException success) { |
806 |
} finally { |
807 |
joinPool(e); |
808 |
} |
809 |
} |
810 |
|
811 |
/** |
812 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
813 |
*/ |
814 |
public void testTimedInvokeAny3() throws Throwable { |
815 |
CountDownLatch latch = new CountDownLatch(1); |
816 |
ExecutorService e = new ForkJoinPool(1); |
817 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
818 |
l.add(latchAwaitingStringTask(latch)); |
819 |
l.add(null); |
820 |
try { |
821 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
822 |
shouldThrow(); |
823 |
} catch (NullPointerException success) { |
824 |
} finally { |
825 |
latch.countDown(); |
826 |
joinPool(e); |
827 |
} |
828 |
} |
829 |
|
830 |
/** |
831 |
* timed invokeAny(c) throws ExecutionException if no task completes |
832 |
*/ |
833 |
public void testTimedInvokeAny4() throws Throwable { |
834 |
ExecutorService e = new ForkJoinPool(1); |
835 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
836 |
l.add(new NPETask()); |
837 |
try { |
838 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
839 |
shouldThrow(); |
840 |
} catch (ExecutionException success) { |
841 |
assertTrue(success.getCause() instanceof NullPointerException); |
842 |
} finally { |
843 |
joinPool(e); |
844 |
} |
845 |
} |
846 |
|
847 |
/** |
848 |
* timed invokeAny(c) returns result of some task in c |
849 |
*/ |
850 |
public void testTimedInvokeAny5() throws Throwable { |
851 |
ExecutorService e = new ForkJoinPool(1); |
852 |
try { |
853 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
854 |
l.add(new StringTask()); |
855 |
l.add(new StringTask()); |
856 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
857 |
assertSame(TEST_STRING, result); |
858 |
} finally { |
859 |
joinPool(e); |
860 |
} |
861 |
} |
862 |
|
863 |
/** |
864 |
* timed invokeAll(null) throws NullPointerException |
865 |
*/ |
866 |
public void testTimedInvokeAll1() throws Throwable { |
867 |
ExecutorService e = new ForkJoinPool(1); |
868 |
try { |
869 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
870 |
shouldThrow(); |
871 |
} catch (NullPointerException success) { |
872 |
} finally { |
873 |
joinPool(e); |
874 |
} |
875 |
} |
876 |
|
877 |
/** |
878 |
* timed invokeAll(null time unit) throws NullPointerException |
879 |
*/ |
880 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
881 |
ExecutorService e = new ForkJoinPool(1); |
882 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
883 |
l.add(new StringTask()); |
884 |
try { |
885 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
886 |
shouldThrow(); |
887 |
} catch (NullPointerException success) { |
888 |
} finally { |
889 |
joinPool(e); |
890 |
} |
891 |
} |
892 |
|
893 |
/** |
894 |
* timed invokeAll(empty collection) returns empty collection |
895 |
*/ |
896 |
public void testTimedInvokeAll2() throws InterruptedException { |
897 |
ExecutorService e = new ForkJoinPool(1); |
898 |
try { |
899 |
List<Future<String>> r |
900 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
901 |
MEDIUM_DELAY_MS, MILLISECONDS); |
902 |
assertTrue(r.isEmpty()); |
903 |
} finally { |
904 |
joinPool(e); |
905 |
} |
906 |
} |
907 |
|
908 |
/** |
909 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
910 |
*/ |
911 |
public void testTimedInvokeAll3() throws InterruptedException { |
912 |
ExecutorService e = new ForkJoinPool(1); |
913 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
914 |
l.add(new StringTask()); |
915 |
l.add(null); |
916 |
try { |
917 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
918 |
shouldThrow(); |
919 |
} catch (NullPointerException success) { |
920 |
} finally { |
921 |
joinPool(e); |
922 |
} |
923 |
} |
924 |
|
925 |
/** |
926 |
* get of returned element of invokeAll(c) throws exception on failed task |
927 |
*/ |
928 |
public void testTimedInvokeAll4() throws Throwable { |
929 |
ExecutorService e = new ForkJoinPool(1); |
930 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
931 |
l.add(new NPETask()); |
932 |
List<Future<String>> futures |
933 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
934 |
assertEquals(1, futures.size()); |
935 |
try { |
936 |
futures.get(0).get(); |
937 |
shouldThrow(); |
938 |
} catch (ExecutionException success) { |
939 |
assertTrue(success.getCause() instanceof NullPointerException); |
940 |
} finally { |
941 |
joinPool(e); |
942 |
} |
943 |
} |
944 |
|
945 |
/** |
946 |
* timed invokeAll(c) returns results of all completed tasks in c |
947 |
*/ |
948 |
public void testTimedInvokeAll5() throws Throwable { |
949 |
ExecutorService e = new ForkJoinPool(1); |
950 |
try { |
951 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
952 |
l.add(new StringTask()); |
953 |
l.add(new StringTask()); |
954 |
List<Future<String>> futures |
955 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
956 |
assertEquals(2, futures.size()); |
957 |
for (Future<String> future : futures) |
958 |
assertSame(TEST_STRING, future.get()); |
959 |
} finally { |
960 |
joinPool(e); |
961 |
} |
962 |
} |
963 |
|
964 |
} |