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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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try { |
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p.execute(new FibTask(8)); |
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assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
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} catch (RejectedExecutionException ok) { |
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} |
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} finally { |
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p.shutdownNow(); // failure might have prevented processing task |
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joinPool(p); |
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} |
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} |
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|
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/** |
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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(); |
279 |
} |
280 |
|
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertEquals(0, p.getActiveThreadCount()); |
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assertEquals(0, p.getQueuedTaskCount()); |
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assertEquals(0, p.getQueuedSubmissionCount()); |
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assertFalse(p.hasQueuedSubmissions()); |
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assertFalse(p.isShutdown()); |
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assertFalse(p.isTerminating()); |
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assertFalse(p.isTerminated()); |
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assertTrue(f.isDone()); |
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assertEquals(6765, (int) f.get()); |
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} finally { |
293 |
joinPool(p); |
294 |
} |
295 |
} |
296 |
|
297 |
/** |
298 |
* Completed submit(ForkJoinTask) returns result |
299 |
*/ |
300 |
public void testSubmitForkJoinTask() throws Throwable { |
301 |
ForkJoinPool p = new ForkJoinPool(1); |
302 |
try { |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
304 |
assertEquals(21, (int) f.get()); |
305 |
} finally { |
306 |
joinPool(p); |
307 |
} |
308 |
} |
309 |
|
310 |
/** |
311 |
* A task submitted after shutdown is rejected |
312 |
*/ |
313 |
public void testSubmitAfterShutdown() { |
314 |
ForkJoinPool p = new ForkJoinPool(1); |
315 |
try { |
316 |
p.shutdown(); |
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assertTrue(p.isShutdown()); |
318 |
try { |
319 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
320 |
shouldThrow(); |
321 |
} catch (RejectedExecutionException success) {} |
322 |
} finally { |
323 |
joinPool(p); |
324 |
} |
325 |
} |
326 |
|
327 |
/** |
328 |
* Pool maintains parallelism when using ManagedBlocker |
329 |
*/ |
330 |
public void testBlockingForkJoinTask() throws Throwable { |
331 |
ForkJoinPool p = new ForkJoinPool(4); |
332 |
try { |
333 |
ReentrantLock lock = new ReentrantLock(); |
334 |
ManagedLocker locker = new ManagedLocker(lock); |
335 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
336 |
p.execute(f); |
337 |
assertEquals(6765, (int) f.get()); |
338 |
} finally { |
339 |
p.shutdownNow(); // don't wait out shutdown |
340 |
} |
341 |
} |
342 |
|
343 |
/** |
344 |
* pollSubmission returns unexecuted submitted task, if present |
345 |
*/ |
346 |
public void testPollSubmission() { |
347 |
final CountDownLatch done = new CountDownLatch(1); |
348 |
SubFJP p = new SubFJP(); |
349 |
try { |
350 |
ForkJoinTask a = p.submit(awaiter(done)); |
351 |
ForkJoinTask b = p.submit(awaiter(done)); |
352 |
ForkJoinTask c = p.submit(awaiter(done)); |
353 |
ForkJoinTask r = p.pollSubmission(); |
354 |
assertTrue(r == a || r == b || r == c); |
355 |
assertFalse(r.isDone()); |
356 |
} finally { |
357 |
done.countDown(); |
358 |
joinPool(p); |
359 |
} |
360 |
} |
361 |
|
362 |
/** |
363 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
364 |
*/ |
365 |
public void testDrainTasksTo() { |
366 |
final CountDownLatch done = new CountDownLatch(1); |
367 |
SubFJP p = new SubFJP(); |
368 |
try { |
369 |
ForkJoinTask a = p.submit(awaiter(done)); |
370 |
ForkJoinTask b = p.submit(awaiter(done)); |
371 |
ForkJoinTask c = p.submit(awaiter(done)); |
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ArrayList<ForkJoinTask> al = new ArrayList(); |
373 |
p.drainTasksTo(al); |
374 |
assertTrue(al.size() > 0); |
375 |
for (ForkJoinTask r : al) { |
376 |
assertTrue(r == a || r == b || r == c); |
377 |
assertFalse(r.isDone()); |
378 |
} |
379 |
} finally { |
380 |
done.countDown(); |
381 |
joinPool(p); |
382 |
} |
383 |
} |
384 |
|
385 |
// FJ Versions of AbstractExecutorService tests |
386 |
|
387 |
/** |
388 |
* execute(runnable) runs it to completion |
389 |
*/ |
390 |
public void testExecuteRunnable() throws Throwable { |
391 |
ExecutorService e = new ForkJoinPool(1); |
392 |
try { |
393 |
final AtomicBoolean done = new AtomicBoolean(false); |
394 |
CheckedRunnable task = new CheckedRunnable() { |
395 |
public void realRun() { |
396 |
done.set(true); |
397 |
}}; |
398 |
Future<?> future = e.submit(task); |
399 |
assertNull(future.get()); |
400 |
assertNull(future.get(0, MILLISECONDS)); |
401 |
assertTrue(done.get()); |
402 |
assertTrue(future.isDone()); |
403 |
assertFalse(future.isCancelled()); |
404 |
} finally { |
405 |
joinPool(e); |
406 |
} |
407 |
} |
408 |
|
409 |
/** |
410 |
* Completed submit(callable) returns result |
411 |
*/ |
412 |
public void testSubmitCallable() throws Throwable { |
413 |
ExecutorService e = new ForkJoinPool(1); |
414 |
try { |
415 |
Future<String> future = e.submit(new StringTask()); |
416 |
assertSame(TEST_STRING, future.get()); |
417 |
assertTrue(future.isDone()); |
418 |
assertFalse(future.isCancelled()); |
419 |
} finally { |
420 |
joinPool(e); |
421 |
} |
422 |
} |
423 |
|
424 |
/** |
425 |
* Completed submit(runnable) returns successfully |
426 |
*/ |
427 |
public void testSubmitRunnable() throws Throwable { |
428 |
ExecutorService e = new ForkJoinPool(1); |
429 |
try { |
430 |
Future<?> future = e.submit(new NoOpRunnable()); |
431 |
assertNull(future.get()); |
432 |
assertTrue(future.isDone()); |
433 |
assertFalse(future.isCancelled()); |
434 |
} finally { |
435 |
joinPool(e); |
436 |
} |
437 |
} |
438 |
|
439 |
/** |
440 |
* Completed submit(runnable, result) returns result |
441 |
*/ |
442 |
public void testSubmitRunnable2() throws Throwable { |
443 |
ExecutorService e = new ForkJoinPool(1); |
444 |
try { |
445 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
446 |
assertSame(TEST_STRING, future.get()); |
447 |
assertTrue(future.isDone()); |
448 |
assertFalse(future.isCancelled()); |
449 |
} finally { |
450 |
joinPool(e); |
451 |
} |
452 |
} |
453 |
|
454 |
/** |
455 |
* A submitted privileged action runs to completion |
456 |
*/ |
457 |
public void testSubmitPrivilegedAction() throws Exception { |
458 |
final Callable callable = Executors.callable(new PrivilegedAction() { |
459 |
public Object run() { return TEST_STRING; }}); |
460 |
Runnable r = new CheckedRunnable() { |
461 |
public void realRun() throws Exception { |
462 |
ExecutorService e = new ForkJoinPool(1); |
463 |
try { |
464 |
Future future = e.submit(callable); |
465 |
assertSame(TEST_STRING, future.get()); |
466 |
} finally { |
467 |
joinPool(e); |
468 |
} |
469 |
}}; |
470 |
|
471 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
472 |
} |
473 |
|
474 |
/** |
475 |
* A submitted privileged exception action runs to completion |
476 |
*/ |
477 |
public void testSubmitPrivilegedExceptionAction() throws Exception { |
478 |
final Callable callable = |
479 |
Executors.callable(new PrivilegedExceptionAction() { |
480 |
public Object run() { return TEST_STRING; }}); |
481 |
Runnable r = new CheckedRunnable() { |
482 |
public void realRun() throws Exception { |
483 |
ExecutorService e = new ForkJoinPool(1); |
484 |
try { |
485 |
Future future = e.submit(callable); |
486 |
assertSame(TEST_STRING, future.get()); |
487 |
} finally { |
488 |
joinPool(e); |
489 |
} |
490 |
}}; |
491 |
|
492 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
493 |
} |
494 |
|
495 |
/** |
496 |
* A submitted failed privileged exception action reports exception |
497 |
*/ |
498 |
public void testSubmitFailedPrivilegedExceptionAction() throws Exception { |
499 |
final Callable callable = |
500 |
Executors.callable(new PrivilegedExceptionAction() { |
501 |
public Object run() { throw new IndexOutOfBoundsException(); }}); |
502 |
Runnable r = new CheckedRunnable() { |
503 |
public void realRun() throws Exception { |
504 |
ExecutorService e = new ForkJoinPool(1); |
505 |
try { |
506 |
Future future = e.submit(callable); |
507 |
try { |
508 |
future.get(); |
509 |
shouldThrow(); |
510 |
} catch (ExecutionException success) { |
511 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
512 |
} |
513 |
} finally { |
514 |
joinPool(e); |
515 |
} |
516 |
}}; |
517 |
|
518 |
runWithPermissions(r, new RuntimePermission("modifyThread")); |
519 |
} |
520 |
|
521 |
/** |
522 |
* execute(null runnable) throws NullPointerException |
523 |
*/ |
524 |
public void testExecuteNullRunnable() { |
525 |
ExecutorService e = new ForkJoinPool(1); |
526 |
try { |
527 |
Future<?> future = e.submit((Runnable) null); |
528 |
shouldThrow(); |
529 |
} catch (NullPointerException success) { |
530 |
} finally { |
531 |
joinPool(e); |
532 |
} |
533 |
} |
534 |
|
535 |
/** |
536 |
* submit(null callable) throws NullPointerException |
537 |
*/ |
538 |
public void testSubmitNullCallable() { |
539 |
ExecutorService e = new ForkJoinPool(1); |
540 |
try { |
541 |
Future<String> future = e.submit((Callable) null); |
542 |
shouldThrow(); |
543 |
} catch (NullPointerException success) { |
544 |
} finally { |
545 |
joinPool(e); |
546 |
} |
547 |
} |
548 |
|
549 |
/** |
550 |
* submit(callable).get() throws InterruptedException if interrupted |
551 |
*/ |
552 |
public void testInterruptedSubmit() throws InterruptedException { |
553 |
final CountDownLatch submitted = new CountDownLatch(1); |
554 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
555 |
final ExecutorService p = new ForkJoinPool(1); |
556 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
557 |
public Void realCall() throws InterruptedException { |
558 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
559 |
return null; |
560 |
}}; |
561 |
try { |
562 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
563 |
public void realRun() throws Exception { |
564 |
Future<Void> future = p.submit(awaiter); |
565 |
submitted.countDown(); |
566 |
future.get(); |
567 |
}}); |
568 |
t.start(); |
569 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
570 |
t.interrupt(); |
571 |
t.join(); |
572 |
} finally { |
573 |
quittingTime.countDown(); |
574 |
joinPool(p); |
575 |
} |
576 |
} |
577 |
|
578 |
/** |
579 |
* get of submit(callable) throws ExecutionException if callable |
580 |
* throws exception |
581 |
*/ |
582 |
public void testSubmitEE() throws Throwable { |
583 |
ForkJoinPool p = new ForkJoinPool(1); |
584 |
try { |
585 |
p.submit(new Callable() { |
586 |
public Object call() { throw new ArithmeticException(); }}) |
587 |
.get(); |
588 |
shouldThrow(); |
589 |
} catch (ExecutionException success) { |
590 |
assertTrue(success.getCause() instanceof ArithmeticException); |
591 |
} finally { |
592 |
joinPool(p); |
593 |
} |
594 |
} |
595 |
|
596 |
/** |
597 |
* invokeAny(null) throws NullPointerException |
598 |
*/ |
599 |
public void testInvokeAny1() throws Throwable { |
600 |
ExecutorService e = new ForkJoinPool(1); |
601 |
try { |
602 |
e.invokeAny(null); |
603 |
shouldThrow(); |
604 |
} catch (NullPointerException success) { |
605 |
} finally { |
606 |
joinPool(e); |
607 |
} |
608 |
} |
609 |
|
610 |
/** |
611 |
* invokeAny(empty collection) throws IllegalArgumentException |
612 |
*/ |
613 |
public void testInvokeAny2() throws Throwable { |
614 |
ExecutorService e = new ForkJoinPool(1); |
615 |
try { |
616 |
e.invokeAny(new ArrayList<Callable<String>>()); |
617 |
shouldThrow(); |
618 |
} catch (IllegalArgumentException success) { |
619 |
} finally { |
620 |
joinPool(e); |
621 |
} |
622 |
} |
623 |
|
624 |
/** |
625 |
* invokeAny(c) throws NullPointerException if c has a single null element |
626 |
*/ |
627 |
public void testInvokeAny3() throws Throwable { |
628 |
ExecutorService e = new ForkJoinPool(1); |
629 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
630 |
l.add(null); |
631 |
try { |
632 |
e.invokeAny(l); |
633 |
shouldThrow(); |
634 |
} catch (NullPointerException success) { |
635 |
} finally { |
636 |
joinPool(e); |
637 |
} |
638 |
} |
639 |
|
640 |
/** |
641 |
* invokeAny(c) throws NullPointerException if c has null elements |
642 |
*/ |
643 |
public void testInvokeAny4() throws Throwable { |
644 |
CountDownLatch latch = new CountDownLatch(1); |
645 |
ExecutorService e = new ForkJoinPool(1); |
646 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
647 |
l.add(latchAwaitingStringTask(latch)); |
648 |
l.add(null); |
649 |
try { |
650 |
e.invokeAny(l); |
651 |
shouldThrow(); |
652 |
} catch (NullPointerException success) { |
653 |
} finally { |
654 |
latch.countDown(); |
655 |
joinPool(e); |
656 |
} |
657 |
} |
658 |
|
659 |
/** |
660 |
* invokeAny(c) throws ExecutionException if no task in c completes |
661 |
*/ |
662 |
public void testInvokeAny5() throws Throwable { |
663 |
ExecutorService e = new ForkJoinPool(1); |
664 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
665 |
l.add(new NPETask()); |
666 |
try { |
667 |
e.invokeAny(l); |
668 |
shouldThrow(); |
669 |
} catch (ExecutionException success) { |
670 |
assertTrue(success.getCause() instanceof NullPointerException); |
671 |
} finally { |
672 |
joinPool(e); |
673 |
} |
674 |
} |
675 |
|
676 |
/** |
677 |
* invokeAny(c) returns result of some task in c if at least one completes |
678 |
*/ |
679 |
public void testInvokeAny6() throws Throwable { |
680 |
ExecutorService e = new ForkJoinPool(1); |
681 |
try { |
682 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
683 |
l.add(new StringTask()); |
684 |
l.add(new StringTask()); |
685 |
String result = e.invokeAny(l); |
686 |
assertSame(TEST_STRING, result); |
687 |
} finally { |
688 |
joinPool(e); |
689 |
} |
690 |
} |
691 |
|
692 |
/** |
693 |
* invokeAll(null) throws NullPointerException |
694 |
*/ |
695 |
public void testInvokeAll1() throws Throwable { |
696 |
ExecutorService e = new ForkJoinPool(1); |
697 |
try { |
698 |
e.invokeAll(null); |
699 |
shouldThrow(); |
700 |
} catch (NullPointerException success) { |
701 |
} finally { |
702 |
joinPool(e); |
703 |
} |
704 |
} |
705 |
|
706 |
/** |
707 |
* invokeAll(empty collection) returns empty collection |
708 |
*/ |
709 |
public void testInvokeAll2() throws InterruptedException { |
710 |
ExecutorService e = new ForkJoinPool(1); |
711 |
try { |
712 |
List<Future<String>> r |
713 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
714 |
assertTrue(r.isEmpty()); |
715 |
} finally { |
716 |
joinPool(e); |
717 |
} |
718 |
} |
719 |
|
720 |
/** |
721 |
* invokeAll(c) throws NullPointerException if c has null elements |
722 |
*/ |
723 |
public void testInvokeAll3() throws InterruptedException { |
724 |
ExecutorService e = new ForkJoinPool(1); |
725 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
726 |
l.add(new StringTask()); |
727 |
l.add(null); |
728 |
try { |
729 |
e.invokeAll(l); |
730 |
shouldThrow(); |
731 |
} catch (NullPointerException success) { |
732 |
} finally { |
733 |
joinPool(e); |
734 |
} |
735 |
} |
736 |
|
737 |
/** |
738 |
* get of returned element of invokeAll(c) throws |
739 |
* ExecutionException on failed task |
740 |
*/ |
741 |
public void testInvokeAll4() throws Throwable { |
742 |
ExecutorService e = new ForkJoinPool(1); |
743 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
744 |
l.add(new NPETask()); |
745 |
List<Future<String>> futures = e.invokeAll(l); |
746 |
assertEquals(1, futures.size()); |
747 |
try { |
748 |
futures.get(0).get(); |
749 |
shouldThrow(); |
750 |
} catch (ExecutionException success) { |
751 |
assertTrue(success.getCause() instanceof NullPointerException); |
752 |
} finally { |
753 |
joinPool(e); |
754 |
} |
755 |
} |
756 |
|
757 |
/** |
758 |
* invokeAll(c) returns results of all completed tasks in c |
759 |
*/ |
760 |
public void testInvokeAll5() throws Throwable { |
761 |
ExecutorService e = new ForkJoinPool(1); |
762 |
try { |
763 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
764 |
l.add(new StringTask()); |
765 |
l.add(new StringTask()); |
766 |
List<Future<String>> futures = e.invokeAll(l); |
767 |
assertEquals(2, futures.size()); |
768 |
for (Future<String> future : futures) |
769 |
assertSame(TEST_STRING, future.get()); |
770 |
} finally { |
771 |
joinPool(e); |
772 |
} |
773 |
} |
774 |
|
775 |
/** |
776 |
* timed invokeAny(null) throws NullPointerException |
777 |
*/ |
778 |
public void testTimedInvokeAny1() throws Throwable { |
779 |
ExecutorService e = new ForkJoinPool(1); |
780 |
try { |
781 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
782 |
shouldThrow(); |
783 |
} catch (NullPointerException success) { |
784 |
} finally { |
785 |
joinPool(e); |
786 |
} |
787 |
} |
788 |
|
789 |
/** |
790 |
* timed invokeAny(null time unit) throws NullPointerException |
791 |
*/ |
792 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
793 |
ExecutorService e = new ForkJoinPool(1); |
794 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
795 |
l.add(new StringTask()); |
796 |
try { |
797 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
798 |
shouldThrow(); |
799 |
} catch (NullPointerException success) { |
800 |
} finally { |
801 |
joinPool(e); |
802 |
} |
803 |
} |
804 |
|
805 |
/** |
806 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
807 |
*/ |
808 |
public void testTimedInvokeAny2() throws Throwable { |
809 |
ExecutorService e = new ForkJoinPool(1); |
810 |
try { |
811 |
e.invokeAny(new ArrayList<Callable<String>>(), |
812 |
MEDIUM_DELAY_MS, MILLISECONDS); |
813 |
shouldThrow(); |
814 |
} catch (IllegalArgumentException success) { |
815 |
} finally { |
816 |
joinPool(e); |
817 |
} |
818 |
} |
819 |
|
820 |
/** |
821 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
822 |
*/ |
823 |
public void testTimedInvokeAny3() throws Throwable { |
824 |
CountDownLatch latch = new CountDownLatch(1); |
825 |
ExecutorService e = new ForkJoinPool(1); |
826 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
827 |
l.add(latchAwaitingStringTask(latch)); |
828 |
l.add(null); |
829 |
try { |
830 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
831 |
shouldThrow(); |
832 |
} catch (NullPointerException success) { |
833 |
} finally { |
834 |
latch.countDown(); |
835 |
joinPool(e); |
836 |
} |
837 |
} |
838 |
|
839 |
/** |
840 |
* timed invokeAny(c) throws ExecutionException if no task completes |
841 |
*/ |
842 |
public void testTimedInvokeAny4() throws Throwable { |
843 |
ExecutorService e = new ForkJoinPool(1); |
844 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
845 |
l.add(new NPETask()); |
846 |
try { |
847 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
848 |
shouldThrow(); |
849 |
} catch (ExecutionException success) { |
850 |
assertTrue(success.getCause() instanceof NullPointerException); |
851 |
} finally { |
852 |
joinPool(e); |
853 |
} |
854 |
} |
855 |
|
856 |
/** |
857 |
* timed invokeAny(c) returns result of some task in c |
858 |
*/ |
859 |
public void testTimedInvokeAny5() throws Throwable { |
860 |
ExecutorService e = new ForkJoinPool(1); |
861 |
try { |
862 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
863 |
l.add(new StringTask()); |
864 |
l.add(new StringTask()); |
865 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
866 |
assertSame(TEST_STRING, result); |
867 |
} finally { |
868 |
joinPool(e); |
869 |
} |
870 |
} |
871 |
|
872 |
/** |
873 |
* timed invokeAll(null) throws NullPointerException |
874 |
*/ |
875 |
public void testTimedInvokeAll1() throws Throwable { |
876 |
ExecutorService e = new ForkJoinPool(1); |
877 |
try { |
878 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
879 |
shouldThrow(); |
880 |
} catch (NullPointerException success) { |
881 |
} finally { |
882 |
joinPool(e); |
883 |
} |
884 |
} |
885 |
|
886 |
/** |
887 |
* timed invokeAll(null time unit) throws NullPointerException |
888 |
*/ |
889 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
890 |
ExecutorService e = new ForkJoinPool(1); |
891 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
892 |
l.add(new StringTask()); |
893 |
try { |
894 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
895 |
shouldThrow(); |
896 |
} catch (NullPointerException success) { |
897 |
} finally { |
898 |
joinPool(e); |
899 |
} |
900 |
} |
901 |
|
902 |
/** |
903 |
* timed invokeAll(empty collection) returns empty collection |
904 |
*/ |
905 |
public void testTimedInvokeAll2() throws InterruptedException { |
906 |
ExecutorService e = new ForkJoinPool(1); |
907 |
try { |
908 |
List<Future<String>> r |
909 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
910 |
MEDIUM_DELAY_MS, MILLISECONDS); |
911 |
assertTrue(r.isEmpty()); |
912 |
} finally { |
913 |
joinPool(e); |
914 |
} |
915 |
} |
916 |
|
917 |
/** |
918 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
919 |
*/ |
920 |
public void testTimedInvokeAll3() throws InterruptedException { |
921 |
ExecutorService e = new ForkJoinPool(1); |
922 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
923 |
l.add(new StringTask()); |
924 |
l.add(null); |
925 |
try { |
926 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
927 |
shouldThrow(); |
928 |
} catch (NullPointerException success) { |
929 |
} finally { |
930 |
joinPool(e); |
931 |
} |
932 |
} |
933 |
|
934 |
/** |
935 |
* get of returned element of invokeAll(c) throws exception on failed task |
936 |
*/ |
937 |
public void testTimedInvokeAll4() throws Throwable { |
938 |
ExecutorService e = new ForkJoinPool(1); |
939 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
940 |
l.add(new NPETask()); |
941 |
List<Future<String>> futures |
942 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
943 |
assertEquals(1, futures.size()); |
944 |
try { |
945 |
futures.get(0).get(); |
946 |
shouldThrow(); |
947 |
} catch (ExecutionException success) { |
948 |
assertTrue(success.getCause() instanceof NullPointerException); |
949 |
} finally { |
950 |
joinPool(e); |
951 |
} |
952 |
} |
953 |
|
954 |
/** |
955 |
* timed invokeAll(c) returns results of all completed tasks in c |
956 |
*/ |
957 |
public void testTimedInvokeAll5() throws Throwable { |
958 |
ExecutorService e = new ForkJoinPool(1); |
959 |
try { |
960 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
961 |
l.add(new StringTask()); |
962 |
l.add(new StringTask()); |
963 |
List<Future<String>> futures |
964 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
965 |
assertEquals(2, futures.size()); |
966 |
for (Future<String> future : futures) |
967 |
assertSame(TEST_STRING, future.get()); |
968 |
} finally { |
969 |
joinPool(e); |
970 |
} |
971 |
} |
972 |
|
973 |
} |