| /* |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * This file is available under and governed by the GNU General Public |
| * License version 2 only, as published by the Free Software Foundation. |
| * However, the following notice accompanied the original version of this |
| * file: |
| * |
| * Written by Doug Lea with assistance from members of JCP JSR-166 |
| * Expert Group and released to the public domain, as explained at |
| * http://creativecommons.org/publicdomain/zero/1.0/ |
| */ |
| |
| import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| |
| import java.util.HashSet; |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.CountedCompleter; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ForkJoinPool; |
| import java.util.concurrent.ForkJoinTask; |
| import java.util.concurrent.RecursiveAction; |
| import java.util.concurrent.TimeoutException; |
| |
| import junit.framework.Test; |
| import junit.framework.TestSuite; |
| |
| public class ForkJoinPool8Test extends JSR166TestCase { |
| public static void main(String[] args) { |
| main(suite(), args); |
| } |
| |
| public static Test suite() { |
| return new TestSuite(ForkJoinPool8Test.class); |
| } |
| |
| /** |
| * Common pool exists and has expected parallelism. |
| */ |
| public void testCommonPoolParallelism() { |
| assertEquals(ForkJoinPool.getCommonPoolParallelism(), |
| ForkJoinPool.commonPool().getParallelism()); |
| } |
| |
| /** |
| * Common pool cannot be shut down |
| */ |
| public void testCommonPoolShutDown() { |
| assertFalse(ForkJoinPool.commonPool().isShutdown()); |
| assertFalse(ForkJoinPool.commonPool().isTerminating()); |
| assertFalse(ForkJoinPool.commonPool().isTerminated()); |
| ForkJoinPool.commonPool().shutdown(); |
| assertFalse(ForkJoinPool.commonPool().isShutdown()); |
| assertFalse(ForkJoinPool.commonPool().isTerminating()); |
| assertFalse(ForkJoinPool.commonPool().isTerminated()); |
| ForkJoinPool.commonPool().shutdownNow(); |
| assertFalse(ForkJoinPool.commonPool().isShutdown()); |
| assertFalse(ForkJoinPool.commonPool().isTerminating()); |
| assertFalse(ForkJoinPool.commonPool().isTerminated()); |
| } |
| |
| /* |
| * All of the following test methods are adaptations of those for |
| * RecursiveAction and CountedCompleter, but with all actions |
| * executed in the common pool, generally implicitly via |
| * checkInvoke. |
| */ |
| |
| private void checkInvoke(ForkJoinTask a) { |
| checkNotDone(a); |
| assertNull(a.invoke()); |
| checkCompletedNormally(a); |
| } |
| |
| void checkNotDone(ForkJoinTask a) { |
| assertFalse(a.isDone()); |
| assertFalse(a.isCompletedNormally()); |
| assertFalse(a.isCompletedAbnormally()); |
| assertFalse(a.isCancelled()); |
| assertNull(a.getException()); |
| assertNull(a.getRawResult()); |
| |
| if (! ForkJoinTask.inForkJoinPool()) { |
| Thread.currentThread().interrupt(); |
| try { |
| a.get(); |
| shouldThrow(); |
| } catch (InterruptedException success) { |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| |
| Thread.currentThread().interrupt(); |
| try { |
| a.get(randomTimeout(), randomTimeUnit()); |
| shouldThrow(); |
| } catch (InterruptedException success) { |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| } |
| |
| try { |
| a.get(randomExpiredTimeout(), randomTimeUnit()); |
| shouldThrow(); |
| } catch (TimeoutException success) { |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| } |
| |
| void checkCompletedNormally(ForkJoinTask a) { |
| assertTrue(a.isDone()); |
| assertFalse(a.isCancelled()); |
| assertTrue(a.isCompletedNormally()); |
| assertFalse(a.isCompletedAbnormally()); |
| assertNull(a.getException()); |
| assertNull(a.getRawResult()); |
| assertNull(a.join()); |
| assertFalse(a.cancel(false)); |
| assertFalse(a.cancel(true)); |
| try { |
| assertNull(a.get()); |
| assertNull(a.get(randomTimeout(), randomTimeUnit())); |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| } |
| |
| void checkCancelled(ForkJoinTask a) { |
| assertTrue(a.isDone()); |
| assertTrue(a.isCancelled()); |
| assertFalse(a.isCompletedNormally()); |
| assertTrue(a.isCompletedAbnormally()); |
| assertTrue(a.getException() instanceof CancellationException); |
| assertNull(a.getRawResult()); |
| |
| try { |
| a.join(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| |
| try { |
| a.get(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| |
| try { |
| a.get(randomTimeout(), randomTimeUnit()); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| } |
| |
| void checkCompletedAbnormally(ForkJoinTask a, Throwable t) { |
| assertTrue(a.isDone()); |
| assertFalse(a.isCancelled()); |
| assertFalse(a.isCompletedNormally()); |
| assertTrue(a.isCompletedAbnormally()); |
| assertSame(t.getClass(), a.getException().getClass()); |
| assertNull(a.getRawResult()); |
| assertFalse(a.cancel(false)); |
| assertFalse(a.cancel(true)); |
| |
| try { |
| a.join(); |
| shouldThrow(); |
| } catch (Throwable expected) { |
| assertSame(expected.getClass(), t.getClass()); |
| } |
| |
| try { |
| a.get(); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| assertSame(t.getClass(), success.getCause().getClass()); |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| |
| try { |
| a.get(randomTimeout(), randomTimeUnit()); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| assertSame(t.getClass(), success.getCause().getClass()); |
| } catch (Throwable fail) { threadUnexpectedException(fail); } |
| } |
| |
| public static final class FJException extends RuntimeException { |
| public FJException() { super(); } |
| public FJException(Throwable cause) { super(cause); } |
| } |
| |
| /** A simple recursive action for testing. */ |
| final class FibAction extends CheckedRecursiveAction { |
| final int number; |
| int result; |
| FibAction(int n) { number = n; } |
| protected void realCompute() { |
| int n = number; |
| if (n <= 1) |
| result = n; |
| else { |
| FibAction f1 = new FibAction(n - 1); |
| FibAction f2 = new FibAction(n - 2); |
| invokeAll(f1, f2); |
| result = f1.result + f2.result; |
| } |
| } |
| } |
| |
| /** A recursive action failing in base case. */ |
| static final class FailingFibAction extends RecursiveAction { |
| final int number; |
| int result; |
| FailingFibAction(int n) { number = n; } |
| public void compute() { |
| int n = number; |
| if (n <= 1) |
| throw new FJException(); |
| else { |
| FailingFibAction f1 = new FailingFibAction(n - 1); |
| FailingFibAction f2 = new FailingFibAction(n - 2); |
| invokeAll(f1, f2); |
| result = f1.result + f2.result; |
| } |
| } |
| } |
| |
| /** |
| * invoke returns when task completes normally. |
| * isCompletedAbnormally and isCancelled return false for normally |
| * completed tasks. getRawResult of a RecursiveAction returns null; |
| */ |
| public void testInvoke() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| assertNull(f.invoke()); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyInvoke task returns when task completes normally. |
| * isCompletedAbnormally and isCancelled return false for normally |
| * completed tasks |
| */ |
| public void testQuietlyInvoke() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| f.quietlyInvoke(); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * join of a forked task returns when task completes |
| */ |
| public void testForkJoin() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| assertSame(f, f.fork()); |
| assertNull(f.join()); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * join/quietlyJoin of a forked task succeeds in the presence of interrupts |
| */ |
| public void testJoinIgnoresInterrupts() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| final Thread currentThread = Thread.currentThread(); |
| |
| // test join() |
| assertSame(f, f.fork()); |
| currentThread.interrupt(); |
| assertNull(f.join()); |
| Thread.interrupted(); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| |
| f = new FibAction(8); |
| f.cancel(true); |
| assertSame(f, f.fork()); |
| currentThread.interrupt(); |
| try { |
| f.join(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| Thread.interrupted(); |
| checkCancelled(f); |
| } |
| |
| f = new FibAction(8); |
| f.completeExceptionally(new FJException()); |
| assertSame(f, f.fork()); |
| currentThread.interrupt(); |
| try { |
| f.join(); |
| shouldThrow(); |
| } catch (FJException success) { |
| Thread.interrupted(); |
| checkCompletedAbnormally(f, success); |
| } |
| |
| // test quietlyJoin() |
| f = new FibAction(8); |
| assertSame(f, f.fork()); |
| currentThread.interrupt(); |
| f.quietlyJoin(); |
| Thread.interrupted(); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| |
| f = new FibAction(8); |
| f.cancel(true); |
| assertSame(f, f.fork()); |
| currentThread.interrupt(); |
| f.quietlyJoin(); |
| Thread.interrupted(); |
| checkCancelled(f); |
| |
| f = new FibAction(8); |
| f.completeExceptionally(new FJException()); |
| assertSame(f, f.fork()); |
| currentThread.interrupt(); |
| f.quietlyJoin(); |
| Thread.interrupted(); |
| checkCompletedAbnormally(f, f.getException()); |
| }}; |
| checkInvoke(a); |
| a.reinitialize(); |
| checkInvoke(a); |
| } |
| |
| /** |
| * get of a forked task returns when task completes |
| */ |
| public void testForkGet() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FibAction f = new FibAction(8); |
| assertSame(f, f.fork()); |
| assertNull(f.get()); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * timed get of a forked task returns when task completes |
| */ |
| public void testForkTimedGet() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FibAction f = new FibAction(8); |
| assertSame(f, f.fork()); |
| assertNull(f.get(LONG_DELAY_MS, MILLISECONDS)); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * timed get with null time unit throws NPE |
| */ |
| public void testForkTimedGetNPE() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FibAction f = new FibAction(8); |
| assertSame(f, f.fork()); |
| try { |
| f.get(randomTimeout(), null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyJoin of a forked task returns when task completes |
| */ |
| public void testForkQuietlyJoin() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| assertSame(f, f.fork()); |
| f.quietlyJoin(); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invoke task throws exception when task completes abnormally |
| */ |
| public void testAbnormalInvoke() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingFibAction f = new FailingFibAction(8); |
| try { |
| f.invoke(); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyInvoke task returns when task completes abnormally |
| */ |
| public void testAbnormalQuietlyInvoke() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingFibAction f = new FailingFibAction(8); |
| f.quietlyInvoke(); |
| assertTrue(f.getException() instanceof FJException); |
| checkCompletedAbnormally(f, f.getException()); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * join of a forked task throws exception when task completes abnormally |
| */ |
| public void testAbnormalForkJoin() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingFibAction f = new FailingFibAction(8); |
| assertSame(f, f.fork()); |
| try { |
| f.join(); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * get of a forked task throws exception when task completes abnormally |
| */ |
| public void testAbnormalForkGet() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FailingFibAction f = new FailingFibAction(8); |
| assertSame(f, f.fork()); |
| try { |
| f.get(); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| Throwable cause = success.getCause(); |
| assertTrue(cause instanceof FJException); |
| checkCompletedAbnormally(f, cause); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * timed get of a forked task throws exception when task completes abnormally |
| */ |
| public void testAbnormalForkTimedGet() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FailingFibAction f = new FailingFibAction(8); |
| assertSame(f, f.fork()); |
| try { |
| f.get(LONG_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| Throwable cause = success.getCause(); |
| assertTrue(cause instanceof FJException); |
| checkCompletedAbnormally(f, cause); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyJoin of a forked task returns when task completes abnormally |
| */ |
| public void testAbnormalForkQuietlyJoin() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingFibAction f = new FailingFibAction(8); |
| assertSame(f, f.fork()); |
| f.quietlyJoin(); |
| assertTrue(f.getException() instanceof FJException); |
| checkCompletedAbnormally(f, f.getException()); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invoke task throws exception when task cancelled |
| */ |
| public void testCancelledInvoke() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| assertTrue(f.cancel(true)); |
| try { |
| f.invoke(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| checkCancelled(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * join of a forked task throws exception when task cancelled |
| */ |
| public void testCancelledForkJoin() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| assertTrue(f.cancel(true)); |
| assertSame(f, f.fork()); |
| try { |
| f.join(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| checkCancelled(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * get of a forked task throws exception when task cancelled |
| */ |
| public void testCancelledForkGet() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FibAction f = new FibAction(8); |
| assertTrue(f.cancel(true)); |
| assertSame(f, f.fork()); |
| try { |
| f.get(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| checkCancelled(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * timed get of a forked task throws exception when task cancelled |
| */ |
| public void testCancelledForkTimedGet() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FibAction f = new FibAction(8); |
| assertTrue(f.cancel(true)); |
| assertSame(f, f.fork()); |
| try { |
| f.get(LONG_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| checkCancelled(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyJoin of a forked task returns when task cancelled |
| */ |
| public void testCancelledForkQuietlyJoin() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| assertTrue(f.cancel(true)); |
| assertSame(f, f.fork()); |
| f.quietlyJoin(); |
| checkCancelled(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * inForkJoinPool of non-FJ task returns false |
| */ |
| public void testInForkJoinPool2() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| assertFalse(inForkJoinPool()); |
| }}; |
| assertNull(a.invoke()); |
| } |
| |
| /** |
| * A reinitialized normally completed task may be re-invoked |
| */ |
| public void testReinitialize() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| checkNotDone(f); |
| |
| for (int i = 0; i < 3; i++) { |
| assertNull(f.invoke()); |
| assertEquals(21, f.result); |
| checkCompletedNormally(f); |
| f.reinitialize(); |
| checkNotDone(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * A reinitialized abnormally completed task may be re-invoked |
| */ |
| public void testReinitializeAbnormal() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingFibAction f = new FailingFibAction(8); |
| checkNotDone(f); |
| |
| for (int i = 0; i < 3; i++) { |
| try { |
| f.invoke(); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| f.reinitialize(); |
| checkNotDone(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invoke task throws exception after invoking completeExceptionally |
| */ |
| public void testCompleteExceptionally() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| f.completeExceptionally(new FJException()); |
| try { |
| f.invoke(); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invoke task suppresses execution invoking complete |
| */ |
| public void testComplete() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| f.complete(null); |
| assertNull(f.invoke()); |
| assertEquals(0, f.result); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(t1, t2) invokes all task arguments |
| */ |
| public void testInvokeAll2() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| FibAction g = new FibAction(9); |
| invokeAll(f, g); |
| checkCompletedNormally(f); |
| assertEquals(21, f.result); |
| checkCompletedNormally(g); |
| assertEquals(34, g.result); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with 1 argument invokes task |
| */ |
| public void testInvokeAll1() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| invokeAll(f); |
| checkCompletedNormally(f); |
| assertEquals(21, f.result); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with > 2 argument invokes tasks |
| */ |
| public void testInvokeAll3() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| FibAction g = new FibAction(9); |
| FibAction h = new FibAction(7); |
| invokeAll(f, g, h); |
| assertTrue(f.isDone()); |
| assertTrue(g.isDone()); |
| assertTrue(h.isDone()); |
| checkCompletedNormally(f); |
| assertEquals(21, f.result); |
| checkCompletedNormally(g); |
| assertEquals(34, g.result); |
| checkCompletedNormally(g); |
| assertEquals(13, h.result); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(collection) invokes all tasks in the collection |
| */ |
| public void testInvokeAllCollection() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| FibAction g = new FibAction(9); |
| FibAction h = new FibAction(7); |
| HashSet set = new HashSet(); |
| set.add(f); |
| set.add(g); |
| set.add(h); |
| invokeAll(set); |
| assertTrue(f.isDone()); |
| assertTrue(g.isDone()); |
| assertTrue(h.isDone()); |
| checkCompletedNormally(f); |
| assertEquals(21, f.result); |
| checkCompletedNormally(g); |
| assertEquals(34, g.result); |
| checkCompletedNormally(g); |
| assertEquals(13, h.result); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with any null task throws NPE |
| */ |
| public void testInvokeAllNPE() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| FibAction g = new FibAction(9); |
| FibAction h = null; |
| try { |
| invokeAll(f, g, h); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(t1, t2) throw exception if any task does |
| */ |
| public void testAbnormalInvokeAll2() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| FailingFibAction g = new FailingFibAction(9); |
| try { |
| invokeAll(f, g); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(g, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with 1 argument throws exception if task does |
| */ |
| public void testAbnormalInvokeAll1() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingFibAction g = new FailingFibAction(9); |
| try { |
| invokeAll(g); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(g, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with > 2 argument throws exception if any task does |
| */ |
| public void testAbnormalInvokeAll3() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| FailingFibAction g = new FailingFibAction(9); |
| FibAction h = new FibAction(7); |
| try { |
| invokeAll(f, g, h); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(g, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(collection) throws exception if any task does |
| */ |
| public void testAbnormalInvokeAllCollection() { |
| RecursiveAction a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingFibAction f = new FailingFibAction(8); |
| FibAction g = new FibAction(9); |
| FibAction h = new FibAction(7); |
| HashSet set = new HashSet(); |
| set.add(f); |
| set.add(g); |
| set.add(h); |
| try { |
| invokeAll(set); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| // CountedCompleter versions |
| |
| abstract static class CCF extends CountedCompleter { |
| int number; |
| int rnumber; |
| |
| public CCF(CountedCompleter parent, int n) { |
| super(parent, 1); |
| this.number = n; |
| } |
| |
| public final void compute() { |
| CountedCompleter p; |
| CCF f = this; |
| int n = number; |
| while (n >= 2) { |
| new RCCF(f, n - 2).fork(); |
| f = new LCCF(f, --n); |
| } |
| f.number = n; |
| f.onCompletion(f); |
| if ((p = f.getCompleter()) != null) |
| p.tryComplete(); |
| else |
| f.quietlyComplete(); |
| } |
| } |
| |
| static final class LCCF extends CCF { |
| public LCCF(CountedCompleter parent, int n) { |
| super(parent, n); |
| } |
| public final void onCompletion(CountedCompleter caller) { |
| CCF p = (CCF)getCompleter(); |
| int n = number + rnumber; |
| if (p != null) |
| p.number = n; |
| else |
| number = n; |
| } |
| } |
| static final class RCCF extends CCF { |
| public RCCF(CountedCompleter parent, int n) { |
| super(parent, n); |
| } |
| public final void onCompletion(CountedCompleter caller) { |
| CCF p = (CCF)getCompleter(); |
| int n = number + rnumber; |
| if (p != null) |
| p.rnumber = n; |
| else |
| number = n; |
| } |
| } |
| |
| /** Version of CCF with forced failure in left completions. */ |
| abstract static class FailingCCF extends CountedCompleter { |
| int number; |
| int rnumber; |
| |
| public FailingCCF(CountedCompleter parent, int n) { |
| super(parent, 1); |
| this.number = n; |
| } |
| |
| public final void compute() { |
| CountedCompleter p; |
| FailingCCF f = this; |
| int n = number; |
| while (n >= 2) { |
| new RFCCF(f, n - 2).fork(); |
| f = new LFCCF(f, --n); |
| } |
| f.number = n; |
| f.onCompletion(f); |
| if ((p = f.getCompleter()) != null) |
| p.tryComplete(); |
| else |
| f.quietlyComplete(); |
| } |
| } |
| |
| static final class LFCCF extends FailingCCF { |
| public LFCCF(CountedCompleter parent, int n) { |
| super(parent, n); |
| } |
| public final void onCompletion(CountedCompleter caller) { |
| FailingCCF p = (FailingCCF)getCompleter(); |
| int n = number + rnumber; |
| if (p != null) |
| p.number = n; |
| else |
| number = n; |
| } |
| } |
| static final class RFCCF extends FailingCCF { |
| public RFCCF(CountedCompleter parent, int n) { |
| super(parent, n); |
| } |
| public final void onCompletion(CountedCompleter caller) { |
| completeExceptionally(new FJException()); |
| } |
| } |
| |
| /** |
| * invoke returns when task completes normally. |
| * isCompletedAbnormally and isCancelled return false for normally |
| * completed tasks; getRawResult returns null. |
| */ |
| public void testInvokeCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| assertNull(f.invoke()); |
| assertEquals(21, f.number); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyInvoke task returns when task completes normally. |
| * isCompletedAbnormally and isCancelled return false for normally |
| * completed tasks |
| */ |
| public void testQuietlyInvokeCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| f.quietlyInvoke(); |
| assertEquals(21, f.number); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * join of a forked task returns when task completes |
| */ |
| public void testForkJoinCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| assertSame(f, f.fork()); |
| assertNull(f.join()); |
| assertEquals(21, f.number); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * get of a forked task returns when task completes |
| */ |
| public void testForkGetCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| CCF f = new LCCF(null, 8); |
| assertSame(f, f.fork()); |
| assertNull(f.get()); |
| assertEquals(21, f.number); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * timed get of a forked task returns when task completes |
| */ |
| public void testForkTimedGetCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| CCF f = new LCCF(null, 8); |
| assertSame(f, f.fork()); |
| assertNull(f.get(LONG_DELAY_MS, MILLISECONDS)); |
| assertEquals(21, f.number); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * timed get with null time unit throws NPE |
| */ |
| public void testForkTimedGetNPECC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| CCF f = new LCCF(null, 8); |
| assertSame(f, f.fork()); |
| try { |
| f.get(randomTimeout(), null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyJoin of a forked task returns when task completes |
| */ |
| public void testForkQuietlyJoinCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| assertSame(f, f.fork()); |
| f.quietlyJoin(); |
| assertEquals(21, f.number); |
| checkCompletedNormally(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invoke task throws exception when task completes abnormally |
| */ |
| public void testAbnormalInvokeCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingCCF f = new LFCCF(null, 8); |
| try { |
| f.invoke(); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyInvoke task returns when task completes abnormally |
| */ |
| public void testAbnormalQuietlyInvokeCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingCCF f = new LFCCF(null, 8); |
| f.quietlyInvoke(); |
| assertTrue(f.getException() instanceof FJException); |
| checkCompletedAbnormally(f, f.getException()); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * join of a forked task throws exception when task completes abnormally |
| */ |
| public void testAbnormalForkJoinCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingCCF f = new LFCCF(null, 8); |
| assertSame(f, f.fork()); |
| try { |
| f.join(); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * get of a forked task throws exception when task completes abnormally |
| */ |
| public void testAbnormalForkGetCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FailingCCF f = new LFCCF(null, 8); |
| assertSame(f, f.fork()); |
| try { |
| f.get(); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| Throwable cause = success.getCause(); |
| assertTrue(cause instanceof FJException); |
| checkCompletedAbnormally(f, cause); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * timed get of a forked task throws exception when task completes abnormally |
| */ |
| public void testAbnormalForkTimedGetCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| FailingCCF f = new LFCCF(null, 8); |
| assertSame(f, f.fork()); |
| try { |
| f.get(LONG_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (ExecutionException success) { |
| Throwable cause = success.getCause(); |
| assertTrue(cause instanceof FJException); |
| checkCompletedAbnormally(f, cause); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyJoin of a forked task returns when task completes abnormally |
| */ |
| public void testAbnormalForkQuietlyJoinCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingCCF f = new LFCCF(null, 8); |
| assertSame(f, f.fork()); |
| f.quietlyJoin(); |
| assertTrue(f.getException() instanceof FJException); |
| checkCompletedAbnormally(f, f.getException()); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invoke task throws exception when task cancelled |
| */ |
| public void testCancelledInvokeCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| assertTrue(f.cancel(true)); |
| try { |
| f.invoke(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| checkCancelled(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * join of a forked task throws exception when task cancelled |
| */ |
| public void testCancelledForkJoinCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| assertTrue(f.cancel(true)); |
| assertSame(f, f.fork()); |
| try { |
| f.join(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| checkCancelled(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * get of a forked task throws exception when task cancelled |
| */ |
| public void testCancelledForkGetCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| CCF f = new LCCF(null, 8); |
| assertTrue(f.cancel(true)); |
| assertSame(f, f.fork()); |
| try { |
| f.get(); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| checkCancelled(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * timed get of a forked task throws exception when task cancelled |
| */ |
| public void testCancelledForkTimedGetCC() throws Exception { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() throws Exception { |
| CCF f = new LCCF(null, 8); |
| assertTrue(f.cancel(true)); |
| assertSame(f, f.fork()); |
| try { |
| f.get(LONG_DELAY_MS, MILLISECONDS); |
| shouldThrow(); |
| } catch (CancellationException success) { |
| checkCancelled(f); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * quietlyJoin of a forked task returns when task cancelled |
| */ |
| public void testCancelledForkQuietlyJoinCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| assertTrue(f.cancel(true)); |
| assertSame(f, f.fork()); |
| f.quietlyJoin(); |
| checkCancelled(f); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * getPool of non-FJ task returns null |
| */ |
| public void testGetPool2CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| assertNull(getPool()); |
| }}; |
| assertNull(a.invoke()); |
| } |
| |
| /** |
| * inForkJoinPool of non-FJ task returns false |
| */ |
| public void testInForkJoinPool2CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| assertFalse(inForkJoinPool()); |
| }}; |
| assertNull(a.invoke()); |
| } |
| |
| /** |
| * setRawResult(null) succeeds |
| */ |
| public void testSetRawResultCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| setRawResult(null); |
| assertNull(getRawResult()); |
| }}; |
| assertNull(a.invoke()); |
| } |
| |
| /** |
| * invoke task throws exception after invoking completeExceptionally |
| */ |
| public void testCompleteExceptionally2CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| f.completeExceptionally(new FJException()); |
| try { |
| f.invoke(); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(t1, t2) invokes all task arguments |
| */ |
| public void testInvokeAll2CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| CCF g = new LCCF(null, 9); |
| invokeAll(f, g); |
| assertEquals(21, f.number); |
| assertEquals(34, g.number); |
| checkCompletedNormally(f); |
| checkCompletedNormally(g); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with 1 argument invokes task |
| */ |
| public void testInvokeAll1CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| invokeAll(f); |
| checkCompletedNormally(f); |
| assertEquals(21, f.number); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with > 2 argument invokes tasks |
| */ |
| public void testInvokeAll3CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| CCF g = new LCCF(null, 9); |
| CCF h = new LCCF(null, 7); |
| invokeAll(f, g, h); |
| assertEquals(21, f.number); |
| assertEquals(34, g.number); |
| assertEquals(13, h.number); |
| checkCompletedNormally(f); |
| checkCompletedNormally(g); |
| checkCompletedNormally(h); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(collection) invokes all tasks in the collection |
| */ |
| public void testInvokeAllCollectionCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| CCF g = new LCCF(null, 9); |
| CCF h = new LCCF(null, 7); |
| HashSet set = new HashSet(); |
| set.add(f); |
| set.add(g); |
| set.add(h); |
| invokeAll(set); |
| assertEquals(21, f.number); |
| assertEquals(34, g.number); |
| assertEquals(13, h.number); |
| checkCompletedNormally(f); |
| checkCompletedNormally(g); |
| checkCompletedNormally(h); |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with any null task throws NPE |
| */ |
| public void testInvokeAllNPECC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| CCF g = new LCCF(null, 9); |
| CCF h = null; |
| try { |
| invokeAll(f, g, h); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(t1, t2) throw exception if any task does |
| */ |
| public void testAbnormalInvokeAll2CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| FailingCCF g = new LFCCF(null, 9); |
| try { |
| invokeAll(f, g); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(g, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with 1 argument throws exception if task does |
| */ |
| public void testAbnormalInvokeAll1CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingCCF g = new LFCCF(null, 9); |
| try { |
| invokeAll(g); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(g, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(tasks) with > 2 argument throws exception if any task does |
| */ |
| public void testAbnormalInvokeAll3CC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| CCF f = new LCCF(null, 8); |
| FailingCCF g = new LFCCF(null, 9); |
| CCF h = new LCCF(null, 7); |
| try { |
| invokeAll(f, g, h); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(g, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * invokeAll(collection) throws exception if any task does |
| */ |
| public void testAbnormalInvokeAllCollectionCC() { |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FailingCCF f = new LFCCF(null, 8); |
| CCF g = new LCCF(null, 9); |
| CCF h = new LCCF(null, 7); |
| HashSet set = new HashSet(); |
| set.add(f); |
| set.add(g); |
| set.add(h); |
| try { |
| invokeAll(set); |
| shouldThrow(); |
| } catch (FJException success) { |
| checkCompletedAbnormally(f, success); |
| } |
| }}; |
| checkInvoke(a); |
| } |
| |
| /** |
| * awaitQuiescence by a worker is equivalent in effect to |
| * ForkJoinTask.helpQuiesce() |
| */ |
| public void testAwaitQuiescence1() throws Exception { |
| final ForkJoinPool p = new ForkJoinPool(); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| final long startTime = System.nanoTime(); |
| assertTrue(p.isQuiescent()); |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| assertSame(f, f.fork()); |
| assertSame(p, ForkJoinTask.getPool()); |
| boolean quiescent = p.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS); |
| assertTrue(quiescent); |
| assertFalse(p.isQuiescent()); |
| while (!f.isDone()) { |
| assertFalse(p.getAsyncMode()); |
| assertFalse(p.isShutdown()); |
| assertFalse(p.isTerminating()); |
| assertFalse(p.isTerminated()); |
| Thread.yield(); |
| } |
| assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
| assertFalse(p.isQuiescent()); |
| assertEquals(0, ForkJoinTask.getQueuedTaskCount()); |
| assertEquals(21, f.result); |
| }}; |
| p.execute(a); |
| while (!a.isDone() || !p.isQuiescent()) { |
| assertFalse(p.getAsyncMode()); |
| assertFalse(p.isShutdown()); |
| assertFalse(p.isTerminating()); |
| assertFalse(p.isTerminated()); |
| Thread.yield(); |
| } |
| assertEquals(0, p.getQueuedTaskCount()); |
| assertFalse(p.getAsyncMode()); |
| assertEquals(0, p.getQueuedSubmissionCount()); |
| assertFalse(p.hasQueuedSubmissions()); |
| while (p.getActiveThreadCount() != 0 |
| && millisElapsedSince(startTime) < LONG_DELAY_MS) |
| Thread.yield(); |
| assertFalse(p.isShutdown()); |
| assertFalse(p.isTerminating()); |
| assertFalse(p.isTerminated()); |
| assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
| } |
| } |
| |
| /** |
| * awaitQuiescence returns when pool isQuiescent() or the indicated |
| * timeout elapsed |
| */ |
| public void testAwaitQuiescence2() throws Exception { |
| /** |
| * """It is possible to disable or limit the use of threads in the |
| * common pool by setting the parallelism property to zero. However |
| * doing so may cause unjoined tasks to never be executed.""" |
| */ |
| if ("0".equals(System.getProperty( |
| "java.util.concurrent.ForkJoinPool.common.parallelism"))) |
| return; |
| final ForkJoinPool p = new ForkJoinPool(); |
| try (PoolCleaner cleaner = cleaner(p)) { |
| assertTrue(p.isQuiescent()); |
| final long startTime = System.nanoTime(); |
| ForkJoinTask a = new CheckedRecursiveAction() { |
| protected void realCompute() { |
| FibAction f = new FibAction(8); |
| assertSame(f, f.fork()); |
| while (!f.isDone() |
| && millisElapsedSince(startTime) < LONG_DELAY_MS) { |
| assertFalse(p.getAsyncMode()); |
| assertFalse(p.isShutdown()); |
| assertFalse(p.isTerminating()); |
| assertFalse(p.isTerminated()); |
| Thread.yield(); |
| } |
| assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
| assertEquals(0, ForkJoinTask.getQueuedTaskCount()); |
| assertEquals(21, f.result); |
| }}; |
| p.execute(a); |
| assertTrue(p.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS)); |
| assertTrue(p.isQuiescent()); |
| assertTrue(a.isDone()); |
| assertEquals(0, p.getQueuedTaskCount()); |
| assertFalse(p.getAsyncMode()); |
| assertEquals(0, p.getQueuedSubmissionCount()); |
| assertFalse(p.hasQueuedSubmissions()); |
| while (p.getActiveThreadCount() != 0 |
| && millisElapsedSince(startTime) < LONG_DELAY_MS) |
| Thread.yield(); |
| assertFalse(p.isShutdown()); |
| assertFalse(p.isTerminating()); |
| assertFalse(p.isTerminated()); |
| assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
| } |
| } |
| |
| } |