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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 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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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.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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/** |
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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 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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*/ |
259 |
public void testisQuiescent() throws InterruptedException { |
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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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p.invoke(new FibTask(20)); |
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assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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p.getFactory()); |
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Thread.sleep(SMALL_DELAY_MS); |
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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()); |
276 |
} finally { |
277 |
joinPool(p); |
278 |
} |
279 |
} |
280 |
|
281 |
/** |
282 |
* Completed submit(ForkJoinTask) returns result |
283 |
*/ |
284 |
public void testSubmitForkJoinTask() throws Throwable { |
285 |
ForkJoinPool p = new ForkJoinPool(1); |
286 |
try { |
287 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
288 |
assertEquals(21, (int) f.get()); |
289 |
} finally { |
290 |
joinPool(p); |
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} |
292 |
} |
293 |
|
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/** |
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* A task submitted after shutdown is rejected |
296 |
*/ |
297 |
public void testSubmitAfterShutdown() { |
298 |
ForkJoinPool p = new ForkJoinPool(1); |
299 |
try { |
300 |
p.shutdown(); |
301 |
assertTrue(p.isShutdown()); |
302 |
try { |
303 |
ForkJoinTask<Integer> f = p.submit(new FibTask(8)); |
304 |
shouldThrow(); |
305 |
} catch (RejectedExecutionException success) {} |
306 |
} finally { |
307 |
joinPool(p); |
308 |
} |
309 |
} |
310 |
|
311 |
/** |
312 |
* Pool maintains parallelism when using ManagedBlocker |
313 |
*/ |
314 |
public void testBlockingForkJoinTask() throws Throwable { |
315 |
ForkJoinPool p = new ForkJoinPool(4); |
316 |
try { |
317 |
ReentrantLock lock = new ReentrantLock(); |
318 |
ManagedLocker locker = new ManagedLocker(lock); |
319 |
ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock); |
320 |
p.execute(f); |
321 |
assertEquals(6765, (int) f.get()); |
322 |
} finally { |
323 |
p.shutdownNow(); // don't wait out shutdown |
324 |
} |
325 |
} |
326 |
|
327 |
/** |
328 |
* pollSubmission returns unexecuted submitted task, if present |
329 |
*/ |
330 |
public void testPollSubmission() { |
331 |
SubFJP p = new SubFJP(); |
332 |
try { |
333 |
ForkJoinTask a = p.submit(new ShortRunnable()); |
334 |
ForkJoinTask b = p.submit(new ShortRunnable()); |
335 |
ForkJoinTask c = p.submit(new ShortRunnable()); |
336 |
ForkJoinTask r = p.pollSubmission(); |
337 |
assertTrue(r == a || r == b || r == c); |
338 |
assertFalse(r.isDone()); |
339 |
} finally { |
340 |
joinPool(p); |
341 |
} |
342 |
} |
343 |
|
344 |
/** |
345 |
* drainTasksTo transfers unexecuted submitted tasks, if present |
346 |
*/ |
347 |
public void testDrainTasksTo() { |
348 |
SubFJP p = new SubFJP(); |
349 |
try { |
350 |
ForkJoinTask a = p.submit(new ShortRunnable()); |
351 |
ForkJoinTask b = p.submit(new ShortRunnable()); |
352 |
ForkJoinTask c = p.submit(new ShortRunnable()); |
353 |
ArrayList<ForkJoinTask> al = new ArrayList(); |
354 |
p.drainTasksTo(al); |
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assertTrue(al.size() > 0); |
356 |
for (ForkJoinTask r : al) { |
357 |
assertTrue(r == a || r == b || r == c); |
358 |
assertFalse(r.isDone()); |
359 |
} |
360 |
} finally { |
361 |
joinPool(p); |
362 |
} |
363 |
} |
364 |
|
365 |
|
366 |
// FJ Versions of AbstractExecutorService tests |
367 |
|
368 |
/** |
369 |
* execute(runnable) runs it to completion |
370 |
*/ |
371 |
public void testExecuteRunnable() throws Throwable { |
372 |
ExecutorService e = new ForkJoinPool(1); |
373 |
try { |
374 |
TrackedRunnable task = trackedRunnable(SHORT_DELAY_MS); |
375 |
assertFalse(task.isDone()); |
376 |
Future<?> future = e.submit(task); |
377 |
assertNull(future.get()); |
378 |
assertTrue(task.isDone()); |
379 |
assertFalse(future.isCancelled()); |
380 |
} finally { |
381 |
joinPool(e); |
382 |
} |
383 |
} |
384 |
|
385 |
|
386 |
/** |
387 |
* Completed submit(callable) returns result |
388 |
*/ |
389 |
public void testSubmitCallable() throws Throwable { |
390 |
ExecutorService e = new ForkJoinPool(1); |
391 |
try { |
392 |
Future<String> future = e.submit(new StringTask()); |
393 |
assertSame(TEST_STRING, future.get()); |
394 |
assertTrue(future.isDone()); |
395 |
assertFalse(future.isCancelled()); |
396 |
} finally { |
397 |
joinPool(e); |
398 |
} |
399 |
} |
400 |
|
401 |
/** |
402 |
* Completed submit(runnable) returns successfully |
403 |
*/ |
404 |
public void testSubmitRunnable() throws Throwable { |
405 |
ExecutorService e = new ForkJoinPool(1); |
406 |
try { |
407 |
Future<?> future = e.submit(new NoOpRunnable()); |
408 |
assertNull(future.get()); |
409 |
assertTrue(future.isDone()); |
410 |
assertFalse(future.isCancelled()); |
411 |
} finally { |
412 |
joinPool(e); |
413 |
} |
414 |
} |
415 |
|
416 |
/** |
417 |
* Completed submit(runnable, result) returns result |
418 |
*/ |
419 |
public void testSubmitRunnable2() throws Throwable { |
420 |
ExecutorService e = new ForkJoinPool(1); |
421 |
try { |
422 |
Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING); |
423 |
assertSame(TEST_STRING, future.get()); |
424 |
assertTrue(future.isDone()); |
425 |
assertFalse(future.isCancelled()); |
426 |
} finally { |
427 |
joinPool(e); |
428 |
} |
429 |
} |
430 |
|
431 |
|
432 |
/** |
433 |
* A submitted privileged action runs to completion |
434 |
*/ |
435 |
public void testSubmitPrivilegedAction() throws Throwable { |
436 |
Policy savedPolicy = null; |
437 |
try { |
438 |
savedPolicy = Policy.getPolicy(); |
439 |
AdjustablePolicy policy = new AdjustablePolicy(); |
440 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
441 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
442 |
Policy.setPolicy(policy); |
443 |
} catch (AccessControlException ok) { |
444 |
return; |
445 |
} |
446 |
|
447 |
try { |
448 |
ExecutorService e = new ForkJoinPool(1); |
449 |
try { |
450 |
Future future = e.submit(Executors.callable(new PrivilegedAction() { |
451 |
public Object run() { |
452 |
return TEST_STRING; |
453 |
}})); |
454 |
|
455 |
Object result = future.get(); |
456 |
assertSame(TEST_STRING, result); |
457 |
} finally { |
458 |
joinPool(e); |
459 |
} |
460 |
} finally { |
461 |
Policy.setPolicy(savedPolicy); |
462 |
} |
463 |
} |
464 |
|
465 |
/** |
466 |
* A submitted privileged exception action runs to completion |
467 |
*/ |
468 |
public void testSubmitPrivilegedExceptionAction() throws Throwable { |
469 |
Policy savedPolicy = null; |
470 |
try { |
471 |
savedPolicy = Policy.getPolicy(); |
472 |
AdjustablePolicy policy = new AdjustablePolicy(); |
473 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
474 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
475 |
Policy.setPolicy(policy); |
476 |
} catch (AccessControlException ok) { |
477 |
return; |
478 |
} |
479 |
|
480 |
try { |
481 |
ExecutorService e = new ForkJoinPool(1); |
482 |
try { |
483 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
484 |
public Object run() { |
485 |
return TEST_STRING; |
486 |
}})); |
487 |
|
488 |
Object result = future.get(); |
489 |
assertSame(TEST_STRING, result); |
490 |
} finally { |
491 |
joinPool(e); |
492 |
} |
493 |
} finally { |
494 |
Policy.setPolicy(savedPolicy); |
495 |
} |
496 |
} |
497 |
|
498 |
/** |
499 |
* A submitted failed privileged exception action reports exception |
500 |
*/ |
501 |
public void testSubmitFailedPrivilegedExceptionAction() throws Throwable { |
502 |
Policy savedPolicy = null; |
503 |
try { |
504 |
savedPolicy = Policy.getPolicy(); |
505 |
AdjustablePolicy policy = new AdjustablePolicy(); |
506 |
policy.addPermission(new RuntimePermission("getContextClassLoader")); |
507 |
policy.addPermission(new RuntimePermission("setContextClassLoader")); |
508 |
Policy.setPolicy(policy); |
509 |
} catch (AccessControlException ok) { |
510 |
return; |
511 |
} |
512 |
|
513 |
try { |
514 |
ExecutorService e = new ForkJoinPool(1); |
515 |
try { |
516 |
Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() { |
517 |
public Object run() throws Exception { |
518 |
throw new IndexOutOfBoundsException(); |
519 |
}})); |
520 |
|
521 |
Object result = future.get(); |
522 |
shouldThrow(); |
523 |
} catch (ExecutionException success) { |
524 |
assertTrue(success.getCause() instanceof IndexOutOfBoundsException); |
525 |
} finally { |
526 |
joinPool(e); |
527 |
} |
528 |
} finally { |
529 |
Policy.setPolicy(savedPolicy); |
530 |
} |
531 |
} |
532 |
|
533 |
/** |
534 |
* execute(null runnable) throws NullPointerException |
535 |
*/ |
536 |
public void testExecuteNullRunnable() { |
537 |
ExecutorService e = new ForkJoinPool(1); |
538 |
try { |
539 |
Future<?> future = e.submit((Runnable) null); |
540 |
shouldThrow(); |
541 |
} catch (NullPointerException success) { |
542 |
} finally { |
543 |
joinPool(e); |
544 |
} |
545 |
} |
546 |
|
547 |
|
548 |
/** |
549 |
* submit(null callable) throws NullPointerException |
550 |
*/ |
551 |
public void testSubmitNullCallable() { |
552 |
ExecutorService e = new ForkJoinPool(1); |
553 |
try { |
554 |
Future<String> future = e.submit((Callable) null); |
555 |
shouldThrow(); |
556 |
} catch (NullPointerException success) { |
557 |
} finally { |
558 |
joinPool(e); |
559 |
} |
560 |
} |
561 |
|
562 |
|
563 |
/** |
564 |
* submit(callable).get() throws InterruptedException if interrupted |
565 |
*/ |
566 |
public void testInterruptedSubmit() throws InterruptedException { |
567 |
final CountDownLatch submitted = new CountDownLatch(1); |
568 |
final CountDownLatch quittingTime = new CountDownLatch(1); |
569 |
final ExecutorService p = new ForkJoinPool(1); |
570 |
final Callable<Void> awaiter = new CheckedCallable<Void>() { |
571 |
public Void realCall() throws InterruptedException { |
572 |
assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
573 |
return null; |
574 |
}}; |
575 |
try { |
576 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
577 |
public void realRun() throws Exception { |
578 |
Future<Void> future = p.submit(awaiter); |
579 |
submitted.countDown(); |
580 |
future.get(); |
581 |
}}); |
582 |
t.start(); |
583 |
assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
584 |
t.interrupt(); |
585 |
t.join(); |
586 |
} finally { |
587 |
quittingTime.countDown(); |
588 |
joinPool(p); |
589 |
} |
590 |
} |
591 |
|
592 |
/** |
593 |
* get of submit(callable) throws ExecutionException if callable |
594 |
* throws exception |
595 |
*/ |
596 |
public void testSubmitEE() throws Throwable { |
597 |
ForkJoinPool p = new ForkJoinPool(1); |
598 |
try { |
599 |
p.submit(new Callable() { |
600 |
public Object call() { |
601 |
int i = 5/0; |
602 |
return Boolean.TRUE; |
603 |
}}).get(); |
604 |
shouldThrow(); |
605 |
} catch (ExecutionException success) { |
606 |
assertTrue(success.getCause() instanceof ArithmeticException); |
607 |
} finally { |
608 |
joinPool(p); |
609 |
} |
610 |
} |
611 |
|
612 |
/** |
613 |
* invokeAny(null) throws NullPointerException |
614 |
*/ |
615 |
public void testInvokeAny1() throws Throwable { |
616 |
ExecutorService e = new ForkJoinPool(1); |
617 |
try { |
618 |
e.invokeAny(null); |
619 |
shouldThrow(); |
620 |
} catch (NullPointerException success) { |
621 |
} finally { |
622 |
joinPool(e); |
623 |
} |
624 |
} |
625 |
|
626 |
/** |
627 |
* invokeAny(empty collection) throws IllegalArgumentException |
628 |
*/ |
629 |
public void testInvokeAny2() throws Throwable { |
630 |
ExecutorService e = new ForkJoinPool(1); |
631 |
try { |
632 |
e.invokeAny(new ArrayList<Callable<String>>()); |
633 |
shouldThrow(); |
634 |
} catch (IllegalArgumentException success) { |
635 |
} finally { |
636 |
joinPool(e); |
637 |
} |
638 |
} |
639 |
|
640 |
/** |
641 |
* invokeAny(c) throws NullPointerException if c has a single null element |
642 |
*/ |
643 |
public void testInvokeAny3() throws Throwable { |
644 |
ExecutorService e = new ForkJoinPool(1); |
645 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
646 |
l.add(null); |
647 |
try { |
648 |
e.invokeAny(l); |
649 |
shouldThrow(); |
650 |
} catch (NullPointerException success) { |
651 |
} finally { |
652 |
joinPool(e); |
653 |
} |
654 |
} |
655 |
|
656 |
/** |
657 |
* invokeAny(c) throws NullPointerException if c has null elements |
658 |
*/ |
659 |
public void testInvokeAny4() throws Throwable { |
660 |
CountDownLatch latch = new CountDownLatch(1); |
661 |
ExecutorService e = new ForkJoinPool(1); |
662 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
663 |
l.add(latchAwaitingStringTask(latch)); |
664 |
l.add(null); |
665 |
try { |
666 |
e.invokeAny(l); |
667 |
shouldThrow(); |
668 |
} catch (NullPointerException success) { |
669 |
} finally { |
670 |
latch.countDown(); |
671 |
joinPool(e); |
672 |
} |
673 |
} |
674 |
|
675 |
/** |
676 |
* invokeAny(c) throws ExecutionException if no task in c completes |
677 |
*/ |
678 |
public void testInvokeAny5() throws Throwable { |
679 |
ExecutorService e = new ForkJoinPool(1); |
680 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
681 |
l.add(new NPETask()); |
682 |
try { |
683 |
e.invokeAny(l); |
684 |
shouldThrow(); |
685 |
} catch (ExecutionException success) { |
686 |
assertTrue(success.getCause() instanceof NullPointerException); |
687 |
} finally { |
688 |
joinPool(e); |
689 |
} |
690 |
} |
691 |
|
692 |
/** |
693 |
* invokeAny(c) returns result of some task in c if at least one completes |
694 |
*/ |
695 |
public void testInvokeAny6() throws Throwable { |
696 |
ExecutorService e = new ForkJoinPool(1); |
697 |
try { |
698 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
699 |
l.add(new StringTask()); |
700 |
l.add(new StringTask()); |
701 |
String result = e.invokeAny(l); |
702 |
assertSame(TEST_STRING, result); |
703 |
} finally { |
704 |
joinPool(e); |
705 |
} |
706 |
} |
707 |
|
708 |
/** |
709 |
* invokeAll(null) throws NullPointerException |
710 |
*/ |
711 |
public void testInvokeAll1() throws Throwable { |
712 |
ExecutorService e = new ForkJoinPool(1); |
713 |
try { |
714 |
e.invokeAll(null); |
715 |
shouldThrow(); |
716 |
} catch (NullPointerException success) { |
717 |
} finally { |
718 |
joinPool(e); |
719 |
} |
720 |
} |
721 |
|
722 |
/** |
723 |
* invokeAll(empty collection) returns empty collection |
724 |
*/ |
725 |
public void testInvokeAll2() throws InterruptedException { |
726 |
ExecutorService e = new ForkJoinPool(1); |
727 |
try { |
728 |
List<Future<String>> r |
729 |
= e.invokeAll(new ArrayList<Callable<String>>()); |
730 |
assertTrue(r.isEmpty()); |
731 |
} finally { |
732 |
joinPool(e); |
733 |
} |
734 |
} |
735 |
|
736 |
/** |
737 |
* invokeAll(c) throws NullPointerException if c has null elements |
738 |
*/ |
739 |
public void testInvokeAll3() throws InterruptedException { |
740 |
ExecutorService e = new ForkJoinPool(1); |
741 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
742 |
l.add(new StringTask()); |
743 |
l.add(null); |
744 |
try { |
745 |
e.invokeAll(l); |
746 |
shouldThrow(); |
747 |
} catch (NullPointerException success) { |
748 |
} finally { |
749 |
joinPool(e); |
750 |
} |
751 |
} |
752 |
|
753 |
/** |
754 |
* get of returned element of invokeAll(c) throws |
755 |
* ExecutionException on failed task |
756 |
*/ |
757 |
public void testInvokeAll4() throws Throwable { |
758 |
ExecutorService e = new ForkJoinPool(1); |
759 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
760 |
l.add(new NPETask()); |
761 |
List<Future<String>> futures = e.invokeAll(l); |
762 |
assertEquals(1, futures.size()); |
763 |
try { |
764 |
futures.get(0).get(); |
765 |
shouldThrow(); |
766 |
} catch (ExecutionException success) { |
767 |
assertTrue(success.getCause() instanceof NullPointerException); |
768 |
} finally { |
769 |
joinPool(e); |
770 |
} |
771 |
} |
772 |
|
773 |
/** |
774 |
* invokeAll(c) returns results of all completed tasks in c |
775 |
*/ |
776 |
public void testInvokeAll5() throws Throwable { |
777 |
ExecutorService e = new ForkJoinPool(1); |
778 |
try { |
779 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
780 |
l.add(new StringTask()); |
781 |
l.add(new StringTask()); |
782 |
List<Future<String>> futures = e.invokeAll(l); |
783 |
assertEquals(2, futures.size()); |
784 |
for (Future<String> future : futures) |
785 |
assertSame(TEST_STRING, future.get()); |
786 |
} finally { |
787 |
joinPool(e); |
788 |
} |
789 |
} |
790 |
|
791 |
|
792 |
/** |
793 |
* timed invokeAny(null) throws NullPointerException |
794 |
*/ |
795 |
public void testTimedInvokeAny1() throws Throwable { |
796 |
ExecutorService e = new ForkJoinPool(1); |
797 |
try { |
798 |
e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS); |
799 |
shouldThrow(); |
800 |
} catch (NullPointerException success) { |
801 |
} finally { |
802 |
joinPool(e); |
803 |
} |
804 |
} |
805 |
|
806 |
/** |
807 |
* timed invokeAny(null time unit) throws NullPointerException |
808 |
*/ |
809 |
public void testTimedInvokeAnyNullTimeUnit() throws Throwable { |
810 |
ExecutorService e = new ForkJoinPool(1); |
811 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
812 |
l.add(new StringTask()); |
813 |
try { |
814 |
e.invokeAny(l, MEDIUM_DELAY_MS, null); |
815 |
shouldThrow(); |
816 |
} catch (NullPointerException success) { |
817 |
} finally { |
818 |
joinPool(e); |
819 |
} |
820 |
} |
821 |
|
822 |
/** |
823 |
* timed invokeAny(empty collection) throws IllegalArgumentException |
824 |
*/ |
825 |
public void testTimedInvokeAny2() throws Throwable { |
826 |
ExecutorService e = new ForkJoinPool(1); |
827 |
try { |
828 |
e.invokeAny(new ArrayList<Callable<String>>(), |
829 |
MEDIUM_DELAY_MS, MILLISECONDS); |
830 |
shouldThrow(); |
831 |
} catch (IllegalArgumentException success) { |
832 |
} finally { |
833 |
joinPool(e); |
834 |
} |
835 |
} |
836 |
|
837 |
/** |
838 |
* timed invokeAny(c) throws NullPointerException if c has null elements |
839 |
*/ |
840 |
public void testTimedInvokeAny3() throws Throwable { |
841 |
CountDownLatch latch = new CountDownLatch(1); |
842 |
ExecutorService e = new ForkJoinPool(1); |
843 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
844 |
l.add(latchAwaitingStringTask(latch)); |
845 |
l.add(null); |
846 |
try { |
847 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
848 |
shouldThrow(); |
849 |
} catch (NullPointerException success) { |
850 |
} finally { |
851 |
latch.countDown(); |
852 |
joinPool(e); |
853 |
} |
854 |
} |
855 |
|
856 |
/** |
857 |
* timed invokeAny(c) throws ExecutionException if no task completes |
858 |
*/ |
859 |
public void testTimedInvokeAny4() throws Throwable { |
860 |
ExecutorService e = new ForkJoinPool(1); |
861 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
862 |
l.add(new NPETask()); |
863 |
try { |
864 |
e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
865 |
shouldThrow(); |
866 |
} catch (ExecutionException success) { |
867 |
assertTrue(success.getCause() instanceof NullPointerException); |
868 |
} finally { |
869 |
joinPool(e); |
870 |
} |
871 |
} |
872 |
|
873 |
/** |
874 |
* timed invokeAny(c) returns result of some task in c |
875 |
*/ |
876 |
public void testTimedInvokeAny5() throws Throwable { |
877 |
ExecutorService e = new ForkJoinPool(1); |
878 |
try { |
879 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
880 |
l.add(new StringTask()); |
881 |
l.add(new StringTask()); |
882 |
String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS); |
883 |
assertSame(TEST_STRING, result); |
884 |
} finally { |
885 |
joinPool(e); |
886 |
} |
887 |
} |
888 |
|
889 |
/** |
890 |
* timed invokeAll(null) throws NullPointerException |
891 |
*/ |
892 |
public void testTimedInvokeAll1() throws Throwable { |
893 |
ExecutorService e = new ForkJoinPool(1); |
894 |
try { |
895 |
e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS); |
896 |
shouldThrow(); |
897 |
} catch (NullPointerException success) { |
898 |
} finally { |
899 |
joinPool(e); |
900 |
} |
901 |
} |
902 |
|
903 |
/** |
904 |
* timed invokeAll(null time unit) throws NullPointerException |
905 |
*/ |
906 |
public void testTimedInvokeAllNullTimeUnit() throws Throwable { |
907 |
ExecutorService e = new ForkJoinPool(1); |
908 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
909 |
l.add(new StringTask()); |
910 |
try { |
911 |
e.invokeAll(l, MEDIUM_DELAY_MS, null); |
912 |
shouldThrow(); |
913 |
} catch (NullPointerException success) { |
914 |
} finally { |
915 |
joinPool(e); |
916 |
} |
917 |
} |
918 |
|
919 |
/** |
920 |
* timed invokeAll(empty collection) returns empty collection |
921 |
*/ |
922 |
public void testTimedInvokeAll2() throws InterruptedException { |
923 |
ExecutorService e = new ForkJoinPool(1); |
924 |
try { |
925 |
List<Future<String>> r |
926 |
= e.invokeAll(new ArrayList<Callable<String>>(), |
927 |
MEDIUM_DELAY_MS, MILLISECONDS); |
928 |
assertTrue(r.isEmpty()); |
929 |
} finally { |
930 |
joinPool(e); |
931 |
} |
932 |
} |
933 |
|
934 |
/** |
935 |
* timed invokeAll(c) throws NullPointerException if c has null elements |
936 |
*/ |
937 |
public void testTimedInvokeAll3() throws InterruptedException { |
938 |
ExecutorService e = new ForkJoinPool(1); |
939 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
940 |
l.add(new StringTask()); |
941 |
l.add(null); |
942 |
try { |
943 |
e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
944 |
shouldThrow(); |
945 |
} catch (NullPointerException success) { |
946 |
} finally { |
947 |
joinPool(e); |
948 |
} |
949 |
} |
950 |
|
951 |
/** |
952 |
* get of returned element of invokeAll(c) throws exception on failed task |
953 |
*/ |
954 |
public void testTimedInvokeAll4() throws Throwable { |
955 |
ExecutorService e = new ForkJoinPool(1); |
956 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
957 |
l.add(new NPETask()); |
958 |
List<Future<String>> futures |
959 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
960 |
assertEquals(1, futures.size()); |
961 |
try { |
962 |
futures.get(0).get(); |
963 |
shouldThrow(); |
964 |
} catch (ExecutionException success) { |
965 |
assertTrue(success.getCause() instanceof NullPointerException); |
966 |
} finally { |
967 |
joinPool(e); |
968 |
} |
969 |
} |
970 |
|
971 |
/** |
972 |
* timed invokeAll(c) returns results of all completed tasks in c |
973 |
*/ |
974 |
public void testTimedInvokeAll5() throws Throwable { |
975 |
ExecutorService e = new ForkJoinPool(1); |
976 |
try { |
977 |
List<Callable<String>> l = new ArrayList<Callable<String>>(); |
978 |
l.add(new StringTask()); |
979 |
l.add(new StringTask()); |
980 |
List<Future<String>> futures |
981 |
= e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS); |
982 |
assertEquals(2, futures.size()); |
983 |
for (Future<String> future : futures) |
984 |
assertSame(TEST_STRING, future.get()); |
985 |
} finally { |
986 |
joinPool(e); |
987 |
} |
988 |
} |
989 |
|
990 |
} |