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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/licenses/publicdomain |
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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.locks.ReentrantLock; |
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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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assertTrue(p.getFactory() == |
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ForkJoinPool.defaultForkJoinWorkerThreadFactory); |
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertTrue(p.getActiveThreadCount() == 0); |
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assertTrue(p.getStealCount() == 0); |
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assertTrue(p.getQueuedTaskCount() == 0); |
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assertTrue(p.getQueuedSubmissionCount() == 0); |
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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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/** |
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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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assertTrue(p.getParallelism() == 1); |
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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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assertTrue(p.getActiveThreadCount() == 0); |
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Future<String> future = p.submit(new StringTask()); |
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assertTrue(p.getPoolSize() == 1); |
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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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MyHandler eh = new MyHandler(); |
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ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(), eh, false); |
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try { |
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assert(eh == p.getUncaughtExceptionHandler()); |
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p.execute(new FailingTask()); |
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Thread.sleep(MEDIUM_DELAY_MS); |
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assertTrue(eh.catches > 0); |
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} finally { |
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p.shutdownNow(); |
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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 is true, |
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* queues are empty, threads are not active, and |
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* construction parameters continue to hold |
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*/ |
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public void testisQuiescent() throws InterruptedException { |
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ForkJoinPool p = new ForkJoinPool(2); |
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try { |
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p.invoke(new FibTask(20)); |
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assertTrue(p.getFactory() == |
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ForkJoinPool.defaultForkJoinWorkerThreadFactory); |
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Thread.sleep(MEDIUM_DELAY_MS); |
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assertTrue(p.isQuiescent()); |
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assertFalse(p.getAsyncMode()); |
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assertTrue(p.getActiveThreadCount() == 0); |
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assertTrue(p.getQueuedTaskCount() == 0); |
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assertTrue(p.getQueuedSubmissionCount() == 0); |
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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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} |
273 |
|
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/** |
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* Completed submit(ForkJoinTask) returns result |
276 |
*/ |
277 |
public void testSubmitForkJoinTask() throws Throwable { |
278 |
ForkJoinPool p = new ForkJoinPool(1); |
279 |
try { |
280 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
281 |
int r = f.get(); |
282 |
assertTrue(r == 21); |
283 |
} finally { |
284 |
joinPool(p); |
285 |
} |
286 |
} |
287 |
|
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/** |
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* A task submitted after shutdown is rejected |
290 |
*/ |
291 |
public void testSubmitAfterShutdown() { |
292 |
ForkJoinPool p = new ForkJoinPool(1); |
293 |
try { |
294 |
p.shutdown(); |
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assertTrue(p.isShutdown()); |
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ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
297 |
shouldThrow(); |
298 |
} catch (RejectedExecutionException success) { |
299 |
} finally { |
300 |
joinPool(p); |
301 |
} |
302 |
} |
303 |
|
304 |
/** |
305 |
* Pool maintains parallelism when using ManagedBlocker |
306 |
*/ |
307 |
public void testBlockingForkJoinTask() throws Throwable { |
308 |
ForkJoinPool p = new ForkJoinPool(4); |
309 |
try { |
310 |
ReentrantLock lock = new ReentrantLock(); |
311 |
ManagedLocker locker = new ManagedLocker(lock); |
312 |
ForkJoinTask<Integer> f = new LockingFibTask(30, locker, lock); |
313 |
p.execute(f); |
314 |
int r = f.get(); |
315 |
assertTrue(r == 832040); |
316 |
} finally { |
317 |
p.shutdownNow(); // don't wait out shutdown |
318 |
} |
319 |
} |
320 |
|
321 |
/** |
322 |
* pollSubmission returns unexecuted submitted task, if present |
323 |
*/ |
324 |
public void testPollSubmission() { |
325 |
SubFJP p = new SubFJP(); |
326 |
try { |
327 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
328 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
329 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
330 |
ForkJoinTask r = p.pollSubmission(); |
331 |
assertTrue(r == a || r == b || r == c); |
332 |
assertFalse(r.isDone()); |
333 |
} finally { |
334 |
joinPool(p); |
335 |
} |
336 |
} |
337 |
|
338 |
/** |
339 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
340 |
*/ |
341 |
public void testDrainTasksTo() { |
342 |
SubFJP p = new SubFJP(); |
343 |
try { |
344 |
ForkJoinTask a = p.submit(new MediumRunnable()); |
345 |
ForkJoinTask b = p.submit(new MediumRunnable()); |
346 |
ForkJoinTask c = p.submit(new MediumRunnable()); |
347 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
348 |
p.drainTasksTo(al); |
349 |
assertTrue(al.size() > 0); |
350 |
for (ForkJoinTask r : al) { |
351 |
assertTrue(r == a || r == b || r == c); |
352 |
assertFalse(r.isDone()); |
353 |
} |
354 |
} finally { |
355 |
joinPool(p); |
356 |
} |
357 |
} |
358 |
|
359 |
|
360 |
// FJ Versions of AbstractExecutorService tests |
361 |
|
362 |
/** |
363 |
* execute(runnable) runs it to completion |
364 |
*/ |
365 |
public void testExecuteRunnable() throws Throwable { |
366 |
ExecutorService e = new ForkJoinPool(1); |
367 |
try { |
368 |
TrackedShortRunnable task = new TrackedShortRunnable(); |
369 |
assertFalse(task.done); |
370 |
Future<?> future = e.submit(task); |
371 |
future.get(); |
372 |
assertTrue(task.done); |
373 |
} finally { |
374 |
joinPool(e); |
375 |
} |
376 |
} |
377 |
|
378 |
|
379 |
/** |
380 |
* Completed submit(callable) returns result |
381 |
*/ |
382 |
public void testSubmitCallable() throws Throwable { |
383 |
ExecutorService e = new ForkJoinPool(1); |
384 |
try { |
385 |
Future<String> future = e.submit(new StringTask()); |
386 |
String result = future.get(); |
387 |
assertSame(TEST_STRING, result); |
388 |
} finally { |
389 |
joinPool(e); |
390 |
} |
391 |
} |
392 |
|
393 |
/** |
394 |
* Completed submit(runnable) returns successfully |
395 |
*/ |
396 |
public void testSubmitRunnable() throws Throwable { |
397 |
ExecutorService e = new ForkJoinPool(1); |
398 |
try { |
399 |
Future<?> future = e.submit(new NoOpRunnable()); |
400 |
future.get(); |
401 |
assertTrue(future.isDone()); |
402 |
} finally { |
403 |
joinPool(e); |
404 |
} |
405 |
} |
406 |
|
407 |
/** |
408 |
* Completed submit(runnable, result) returns result |
409 |
*/ |
410 |
public void testSubmitRunnable2() throws Throwable { |
411 |
ExecutorService e = new ForkJoinPool(1); |
412 |
try { |
413 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
414 |
String result = future.get(); |
415 |
assertSame(TEST_STRING, result); |
416 |
} finally { |
417 |
joinPool(e); |
418 |
} |
419 |
} |
420 |
|
421 |
|
422 |
/** |
423 |
* A submitted privileged action to completion |
424 |
*/ |
425 |
public void testSubmitPrivilegedAction() throws Throwable { |
426 |
Policy savedPolicy = null; |
427 |
try { |
428 |
savedPolicy = Policy.getPolicy(); |
429 |
AdjustablePolicy policy = new AdjustablePolicy(); |
430 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
431 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
432 |
Policy.setPolicy(policy); |
433 |
} catch (AccessControlException ok) { |
434 |
return; |
435 |
} |
436 |
|
437 |
try { |
438 |
ExecutorService e = new ForkJoinPool(1); |
439 |
try { |
440 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
441 |
public Object run() { |
442 |
return TEST_STRING; |
443 |
}})); |
444 |
|
445 |
Object result = future.get(); |
446 |
assertSame(TEST_STRING, result); |
447 |
} finally { |
448 |
joinPool(e); |
449 |
} |
450 |
} finally { |
451 |
Policy.setPolicy(savedPolicy); |
452 |
} |
453 |
} |
454 |
|
455 |
/** |
456 |
* A submitted a privileged exception action runs to completion |
457 |
*/ |
458 |
public void testSubmitPrivilegedExceptionAction() throws Throwable { |
459 |
Policy savedPolicy = null; |
460 |
try { |
461 |
savedPolicy = Policy.getPolicy(); |
462 |
AdjustablePolicy policy = new AdjustablePolicy(); |
463 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
464 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
465 |
Policy.setPolicy(policy); |
466 |
} catch (AccessControlException ok) { |
467 |
return; |
468 |
} |
469 |
|
470 |
try { |
471 |
ExecutorService e = new ForkJoinPool(1); |
472 |
try { |
473 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
474 |
public Object run() { |
475 |
return TEST_STRING; |
476 |
}})); |
477 |
|
478 |
Object result = future.get(); |
479 |
assertSame(TEST_STRING, result); |
480 |
} finally { |
481 |
joinPool(e); |
482 |
} |
483 |
} finally { |
484 |
Policy.setPolicy(savedPolicy); |
485 |
} |
486 |
} |
487 |
|
488 |
/** |
489 |
* A submitted failed privileged exception action reports exception |
490 |
*/ |
491 |
public void testSubmitFailedPrivilegedExceptionAction() throws Throwable { |
492 |
Policy savedPolicy = null; |
493 |
try { |
494 |
savedPolicy = Policy.getPolicy(); |
495 |
AdjustablePolicy policy = new AdjustablePolicy(); |
496 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
497 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
498 |
Policy.setPolicy(policy); |
499 |
} catch (AccessControlException ok) { |
500 |
return; |
501 |
} |
502 |
|
503 |
try { |
504 |
ExecutorService e = new ForkJoinPool(1); |
505 |
try { |
506 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
507 |
public Object run() throws Exception { |
508 |
throw new IndexOutOfBoundsException(); |
509 |
}})); |
510 |
|
511 |
Object result = future.get(); |
512 |
shouldThrow(); |
513 |
} catch (ExecutionException success) { |
514 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
515 |
} finally { |
516 |
joinPool(e); |
517 |
} |
518 |
} finally { |
519 |
Policy.setPolicy(savedPolicy); |
520 |
} |
521 |
} |
522 |
|
523 |
/** |
524 |
* execute(null runnable) throws NullPointerException |
525 |
*/ |
526 |
public void testExecuteNullRunnable() { |
527 |
ExecutorService e = new ForkJoinPool(1); |
528 |
try { |
529 |
TrackedShortRunnable task = null; |
530 |
Future<?> future = e.submit(task); |
531 |
shouldThrow(); |
532 |
} catch (NullPointerException success) { |
533 |
} finally { |
534 |
joinPool(e); |
535 |
} |
536 |
} |
537 |
|
538 |
|
539 |
/** |
540 |
* submit(null callable) throws NullPointerException |
541 |
*/ |
542 |
public void testSubmitNullCallable() { |
543 |
ExecutorService e = new ForkJoinPool(1); |
544 |
try { |
545 |
StringTask t = null; |
546 |
Future<String> future = e.submit(t); |
547 |
shouldThrow(); |
548 |
} catch (NullPointerException success) { |
549 |
} finally { |
550 |
joinPool(e); |
551 |
} |
552 |
} |
553 |
|
554 |
|
555 |
/** |
556 |
* Blocking on submit(callable) throws InterruptedException if |
557 |
* caller interrupted. |
558 |
*/ |
559 |
public void testInterruptedSubmit() throws InterruptedException { |
560 |
final ForkJoinPool p = new ForkJoinPool(1); |
561 |
|
562 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
563 |
public void realRun() throws Throwable { |
564 |
p.submit(new CheckedCallable<Object>() { |
565 |
public Object realCall() throws Throwable { |
566 |
try { |
567 |
Thread.sleep(MEDIUM_DELAY_MS); |
568 |
} catch (InterruptedException ok) { |
569 |
} |
570 |
return null; |
571 |
}}).get(); |
572 |
}}); |
573 |
|
574 |
t.start(); |
575 |
Thread.sleep(SHORT_DELAY_MS); |
576 |
t.interrupt(); |
577 |
t.join(); |
578 |
p.shutdownNow(); |
579 |
joinPool(p); |
580 |
} |
581 |
|
582 |
/** |
583 |
* get of submit(callable) throws ExecutionException if callable |
584 |
* throws exception |
585 |
*/ |
586 |
public void testSubmitEE() throws Throwable { |
587 |
ForkJoinPool p = new ForkJoinPool(1); |
588 |
try { |
589 |
p.submit(new Callable() { |
590 |
public Object call() { |
591 |
int i = 5/0; |
592 |
return Boolean.TRUE; |
593 |
}}).get(); |
594 |
shouldThrow(); |
595 |
} catch (ExecutionException success) { |
596 |
assertTrue(success.getCause() instanceof ArithmeticException); |
597 |
} finally { |
598 |
joinPool(p); |
599 |
} |
600 |
} |
601 |
|
602 |
/** |
603 |
* invokeAny(null) throws NullPointerException |
604 |
*/ |
605 |
public void testInvokeAny1() throws Throwable { |
606 |
ExecutorService e = new ForkJoinPool(1); |
607 |
try { |
608 |
e.invokeAny(null); |
609 |
shouldThrow(); |
610 |
} catch (NullPointerException success) { |
611 |
} finally { |
612 |
joinPool(e); |
613 |
} |
614 |
} |
615 |
|
616 |
/** |
617 |
* invokeAny(empty collection) throws IllegalArgumentException |
618 |
*/ |
619 |
public void testInvokeAny2() throws Throwable { |
620 |
ExecutorService e = new ForkJoinPool(1); |
621 |
try { |
622 |
e.invokeAny(new ArrayList<Callable<String>>()); |
623 |
shouldThrow(); |
624 |
} catch (IllegalArgumentException success) { |
625 |
} finally { |
626 |
joinPool(e); |
627 |
} |
628 |
} |
629 |
|
630 |
/** |
631 |
* invokeAny(c) throws NullPointerException if c has a single null element |
632 |
*/ |
633 |
public void testInvokeAny3() throws Throwable { |
634 |
ExecutorService e = new ForkJoinPool(1); |
635 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
636 |
l.add(null); |
637 |
try { |
638 |
e.invokeAny(l); |
639 |
shouldThrow(); |
640 |
} catch (NullPointerException success) { |
641 |
} finally { |
642 |
joinPool(e); |
643 |
} |
644 |
} |
645 |
|
646 |
/** |
647 |
* invokeAny(c) throws NullPointerException if c has null elements |
648 |
*/ |
649 |
public void testInvokeAny4() throws Throwable { |
650 |
CountDownLatch latch = new CountDownLatch(1); |
651 |
ExecutorService e = new ForkJoinPool(1); |
652 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
653 |
l.add(latchAwaitingStringTask(latch)); |
654 |
l.add(null); |
655 |
try { |
656 |
e.invokeAny(l); |
657 |
shouldThrow(); |
658 |
} catch (NullPointerException success) { |
659 |
} finally { |
660 |
latch.countDown(); |
661 |
joinPool(e); |
662 |
} |
663 |
} |
664 |
|
665 |
/** |
666 |
* invokeAny(c) throws ExecutionException if no task in c completes |
667 |
*/ |
668 |
public void testInvokeAny5() throws Throwable { |
669 |
ExecutorService e = new ForkJoinPool(1); |
670 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
671 |
l.add(new NPETask()); |
672 |
try { |
673 |
e.invokeAny(l); |
674 |
shouldThrow(); |
675 |
} catch (ExecutionException success) { |
676 |
assertTrue(success.getCause() instanceof NullPointerException); |
677 |
} finally { |
678 |
joinPool(e); |
679 |
} |
680 |
} |
681 |
|
682 |
/** |
683 |
* invokeAny(c) returns result of some task in c if at least one completes |
684 |
*/ |
685 |
public void testInvokeAny6() throws Throwable { |
686 |
ExecutorService e = new ForkJoinPool(1); |
687 |
try { |
688 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
689 |
l.add(new StringTask()); |
690 |
l.add(new StringTask()); |
691 |
String result = e.invokeAny(l); |
692 |
assertSame(TEST_STRING, result); |
693 |
} finally { |
694 |
joinPool(e); |
695 |
} |
696 |
} |
697 |
|
698 |
/** |
699 |
* invokeAll(null) throws NullPointerException |
700 |
*/ |
701 |
public void testInvokeAll1() throws Throwable { |
702 |
ExecutorService e = new ForkJoinPool(1); |
703 |
try { |
704 |
e.invokeAll(null); |
705 |
shouldThrow(); |
706 |
} catch (NullPointerException success) { |
707 |
} finally { |
708 |
joinPool(e); |
709 |
} |
710 |
} |
711 |
|
712 |
/** |
713 |
* invokeAll(empty collection) returns empty collection |
714 |
*/ |
715 |
public void testInvokeAll2() throws InterruptedException { |
716 |
ExecutorService e = new ForkJoinPool(1); |
717 |
try { |
718 |
List<Future<String>> r |
719 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
720 |
assertTrue(r.isEmpty()); |
721 |
} finally { |
722 |
joinPool(e); |
723 |
} |
724 |
} |
725 |
|
726 |
/** |
727 |
* invokeAll(c) throws NullPointerException if c has null elements |
728 |
*/ |
729 |
public void testInvokeAll3() throws InterruptedException { |
730 |
ExecutorService e = new ForkJoinPool(1); |
731 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
732 |
l.add(new StringTask()); |
733 |
l.add(null); |
734 |
try { |
735 |
e.invokeAll(l); |
736 |
shouldThrow(); |
737 |
} catch (NullPointerException success) { |
738 |
} finally { |
739 |
joinPool(e); |
740 |
} |
741 |
} |
742 |
|
743 |
/** |
744 |
* get of returned element of invokeAll(c) throws |
745 |
* ExecutionException on failed task |
746 |
*/ |
747 |
public void testInvokeAll4() throws Throwable { |
748 |
ExecutorService e = new ForkJoinPool(1); |
749 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
750 |
l.add(new NPETask()); |
751 |
List<Future<String>> futures = e.invokeAll(l); |
752 |
assertEquals(1, futures.size()); |
753 |
try { |
754 |
futures.get(0).get(); |
755 |
shouldThrow(); |
756 |
} catch (ExecutionException success) { |
757 |
assertTrue(success.getCause() instanceof NullPointerException); |
758 |
} finally { |
759 |
joinPool(e); |
760 |
} |
761 |
} |
762 |
|
763 |
/** |
764 |
* invokeAll(c) returns results of all completed tasks in c |
765 |
*/ |
766 |
public void testInvokeAll5() throws Throwable { |
767 |
ExecutorService e = new ForkJoinPool(1); |
768 |
try { |
769 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
770 |
l.add(new StringTask()); |
771 |
l.add(new StringTask()); |
772 |
List<Future<String>> futures = e.invokeAll(l); |
773 |
assertEquals(2, futures.size()); |
774 |
for (Future<String> future : futures) |
775 |
assertSame(TEST_STRING, future.get()); |
776 |
} finally { |
777 |
joinPool(e); |
778 |
} |
779 |
} |
780 |
|
781 |
|
782 |
/** |
783 |
* timed invokeAny(null) throws NullPointerException |
784 |
*/ |
785 |
public void testTimedInvokeAny1() throws Throwable { |
786 |
ExecutorService e = new ForkJoinPool(1); |
787 |
try { |
788 |
e.invokeAny(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
789 |
shouldThrow(); |
790 |
} catch (NullPointerException success) { |
791 |
} finally { |
792 |
joinPool(e); |
793 |
} |
794 |
} |
795 |
|
796 |
/** |
797 |
* timed invokeAny(null time unit) throws NullPointerException |
798 |
*/ |
799 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
800 |
ExecutorService e = new ForkJoinPool(1); |
801 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
802 |
l.add(new StringTask()); |
803 |
try { |
804 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
805 |
shouldThrow(); |
806 |
} catch (NullPointerException success) { |
807 |
} finally { |
808 |
joinPool(e); |
809 |
} |
810 |
} |
811 |
|
812 |
/** |
813 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
814 |
*/ |
815 |
public void testTimedInvokeAny2() throws Throwable { |
816 |
ExecutorService e = new ForkJoinPool(1); |
817 |
try { |
818 |
e.invokeAny(new ArrayList<Callable<String>>(), |
819 |
MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
820 |
shouldThrow(); |
821 |
} catch (IllegalArgumentException success) { |
822 |
} finally { |
823 |
joinPool(e); |
824 |
} |
825 |
} |
826 |
|
827 |
/** |
828 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
829 |
*/ |
830 |
public void testTimedInvokeAny3() throws Throwable { |
831 |
CountDownLatch latch = new CountDownLatch(1); |
832 |
ExecutorService e = new ForkJoinPool(1); |
833 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
834 |
l.add(latchAwaitingStringTask(latch)); |
835 |
l.add(null); |
836 |
try { |
837 |
e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
838 |
shouldThrow(); |
839 |
} catch (NullPointerException success) { |
840 |
} finally { |
841 |
latch.countDown(); |
842 |
joinPool(e); |
843 |
} |
844 |
} |
845 |
|
846 |
/** |
847 |
* timed invokeAny(c) throws ExecutionException if no task completes |
848 |
*/ |
849 |
public void testTimedInvokeAny4() throws Throwable { |
850 |
ExecutorService e = new ForkJoinPool(1); |
851 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
852 |
l.add(new NPETask()); |
853 |
try { |
854 |
e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
855 |
shouldThrow(); |
856 |
} catch (ExecutionException success) { |
857 |
assertTrue(success.getCause() instanceof NullPointerException); |
858 |
} finally { |
859 |
joinPool(e); |
860 |
} |
861 |
} |
862 |
|
863 |
/** |
864 |
* timed invokeAny(c) returns result of some task in c |
865 |
*/ |
866 |
public void testTimedInvokeAny5() throws Throwable { |
867 |
ExecutorService e = new ForkJoinPool(1); |
868 |
try { |
869 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
870 |
l.add(new StringTask()); |
871 |
l.add(new StringTask()); |
872 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
873 |
assertSame(TEST_STRING, result); |
874 |
} finally { |
875 |
joinPool(e); |
876 |
} |
877 |
} |
878 |
|
879 |
/** |
880 |
* timed invokeAll(null) throws NullPointerException |
881 |
*/ |
882 |
public void testTimedInvokeAll1() throws Throwable { |
883 |
ExecutorService e = new ForkJoinPool(1); |
884 |
try { |
885 |
e.invokeAll(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
886 |
shouldThrow(); |
887 |
} catch (NullPointerException success) { |
888 |
} finally { |
889 |
joinPool(e); |
890 |
} |
891 |
} |
892 |
|
893 |
/** |
894 |
* timed invokeAll(null time unit) throws NullPointerException |
895 |
*/ |
896 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
897 |
ExecutorService e = new ForkJoinPool(1); |
898 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
899 |
l.add(new StringTask()); |
900 |
try { |
901 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
902 |
shouldThrow(); |
903 |
} catch (NullPointerException success) { |
904 |
} finally { |
905 |
joinPool(e); |
906 |
} |
907 |
} |
908 |
|
909 |
/** |
910 |
* timed invokeAll(empty collection) returns empty collection |
911 |
*/ |
912 |
public void testTimedInvokeAll2() throws InterruptedException { |
913 |
ExecutorService e = new ForkJoinPool(1); |
914 |
try { |
915 |
List<Future<String>> r |
916 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
917 |
MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
918 |
assertTrue(r.isEmpty()); |
919 |
} finally { |
920 |
joinPool(e); |
921 |
} |
922 |
} |
923 |
|
924 |
/** |
925 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
926 |
*/ |
927 |
public void testTimedInvokeAll3() throws InterruptedException { |
928 |
ExecutorService e = new ForkJoinPool(1); |
929 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
930 |
l.add(new StringTask()); |
931 |
l.add(null); |
932 |
try { |
933 |
e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
934 |
shouldThrow(); |
935 |
} catch (NullPointerException success) { |
936 |
} finally { |
937 |
joinPool(e); |
938 |
} |
939 |
} |
940 |
|
941 |
/** |
942 |
* get of returned element of invokeAll(c) throws exception on failed task |
943 |
*/ |
944 |
public void testTimedInvokeAll4() throws Throwable { |
945 |
ExecutorService e = new ForkJoinPool(1); |
946 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
947 |
l.add(new NPETask()); |
948 |
List<Future<String>> futures |
949 |
= e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
950 |
assertEquals(1, futures.size()); |
951 |
try { |
952 |
futures.get(0).get(); |
953 |
shouldThrow(); |
954 |
} catch (ExecutionException success) { |
955 |
assertTrue(success.getCause() instanceof NullPointerException); |
956 |
} finally { |
957 |
joinPool(e); |
958 |
} |
959 |
} |
960 |
|
961 |
/** |
962 |
* timed invokeAll(c) returns results of all completed tasks in c |
963 |
*/ |
964 |
public void testTimedInvokeAll5() throws Throwable { |
965 |
ExecutorService e = new ForkJoinPool(1); |
966 |
try { |
967 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
968 |
l.add(new StringTask()); |
969 |
l.add(new StringTask()); |
970 |
List<Future<String>> futures |
971 |
= e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
972 |
assertEquals(2, futures.size()); |
973 |
for (Future<String> future : futures) |
974 |
assertSame(TEST_STRING, future.get()); |
975 |
} finally { |
976 |
joinPool(e); |
977 |
} |
978 |
} |
979 |
|
980 |
} |