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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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import junit.framework.*; |
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import java.util.concurrent.CancellationException; |
9 |
import java.util.concurrent.ExecutionException; |
10 |
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.TimeoutException; |
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import static java.util.concurrent.TimeUnit.SECONDS; |
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import java.util.HashSet; |
18 |
|
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public class RecursiveTaskTest extends JSR166TestCase { |
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|
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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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public static Test suite() { |
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return new TestSuite(RecursiveTaskTest.class); |
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} |
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|
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private static ForkJoinPool mainPool() { |
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return new ForkJoinPool(); |
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} |
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|
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private static ForkJoinPool singletonPool() { |
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return new ForkJoinPool(1); |
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} |
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|
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private static ForkJoinPool asyncSingletonPool() { |
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return new ForkJoinPool(1, |
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ForkJoinPool.defaultForkJoinWorkerThreadFactory, |
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null, true); |
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} |
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|
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private <T> T testInvokeOnPool(ForkJoinPool pool, RecursiveTask<T> a) { |
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try { |
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checkNotDone(a); |
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|
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T result = pool.invoke(a); |
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|
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checkCompletedNormally(a, result); |
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return result; |
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} finally { |
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joinPool(pool); |
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} |
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} |
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|
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void checkNotDone(RecursiveTask a) { |
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assertFalse(a.isDone()); |
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assertFalse(a.isCompletedNormally()); |
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assertFalse(a.isCompletedAbnormally()); |
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assertFalse(a.isCancelled()); |
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assertNull(a.getException()); |
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assertNull(a.getRawResult()); |
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|
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if (! ForkJoinTask.inForkJoinPool()) { |
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Thread.currentThread().interrupt(); |
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try { |
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a.get(); |
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shouldThrow(); |
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} catch (InterruptedException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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|
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Thread.currentThread().interrupt(); |
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try { |
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a.get(5L, SECONDS); |
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shouldThrow(); |
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} catch (InterruptedException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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} |
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|
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try { |
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a.get(0L, SECONDS); |
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shouldThrow(); |
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} catch (TimeoutException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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} |
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|
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<T> void checkCompletedNormally(RecursiveTask<T> a, T expected) { |
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assertTrue(a.isDone()); |
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assertFalse(a.isCancelled()); |
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assertTrue(a.isCompletedNormally()); |
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assertFalse(a.isCompletedAbnormally()); |
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assertNull(a.getException()); |
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assertSame(expected, a.getRawResult()); |
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assertSame(expected, a.join()); |
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assertFalse(a.cancel(false)); |
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assertFalse(a.cancel(true)); |
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try { |
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assertSame(expected, a.get()); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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try { |
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assertSame(expected, a.get(5L, SECONDS)); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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} |
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|
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/** |
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* Waits for the task to complete, and checks that when it does, |
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* it will have an Integer result equals to the given int. |
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*/ |
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void checkCompletesNormally(RecursiveTask<Integer> a, int expected) { |
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Integer r = a.join(); |
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assertEquals(expected, (int) r); |
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checkCompletedNormally(a, r); |
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} |
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|
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/** |
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* Like checkCompletesNormally, but verifies that the task has |
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* already completed. |
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*/ |
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void checkCompletedNormally(RecursiveTask<Integer> a, int expected) { |
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Integer r = a.getRawResult(); |
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assertEquals(expected, (int) r); |
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checkCompletedNormally(a, r); |
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} |
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|
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void checkCancelled(RecursiveTask a) { |
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assertTrue(a.isDone()); |
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assertTrue(a.isCancelled()); |
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assertFalse(a.isCompletedNormally()); |
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assertTrue(a.isCompletedAbnormally()); |
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assertTrue(a.getException() instanceof CancellationException); |
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assertNull(a.getRawResult()); |
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|
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try { |
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a.join(); |
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shouldThrow(); |
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} catch (CancellationException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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|
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try { |
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a.get(); |
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shouldThrow(); |
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} catch (CancellationException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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|
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try { |
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a.get(5L, SECONDS); |
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shouldThrow(); |
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} catch (CancellationException success) { |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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} |
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|
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void checkCompletedAbnormally(RecursiveTask a, Throwable t) { |
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assertTrue(a.isDone()); |
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assertFalse(a.isCancelled()); |
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assertFalse(a.isCompletedNormally()); |
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assertTrue(a.isCompletedAbnormally()); |
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assertSame(t.getClass(), a.getException().getClass()); |
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assertNull(a.getRawResult()); |
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assertFalse(a.cancel(false)); |
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assertFalse(a.cancel(true)); |
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|
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try { |
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a.join(); |
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shouldThrow(); |
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} catch (Throwable expected) { |
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assertSame(t.getClass(), expected.getClass()); |
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} |
167 |
|
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try { |
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a.get(); |
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shouldThrow(); |
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} catch (ExecutionException success) { |
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assertSame(t.getClass(), success.getCause().getClass()); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
174 |
|
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try { |
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a.get(5L, SECONDS); |
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shouldThrow(); |
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} catch (ExecutionException success) { |
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assertSame(t.getClass(), success.getCause().getClass()); |
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} catch (Throwable fail) { threadUnexpectedException(fail); } |
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} |
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|
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public static final class FJException extends RuntimeException { |
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public FJException() { super(); } |
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} |
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|
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// An invalid return value for Fib |
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static final Integer NoResult = Integer.valueOf(-17); |
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|
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// A simple recursive task for testing |
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final class FibTask extends CheckedRecursiveTask<Integer> { |
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final int number; |
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FibTask(int n) { number = n; } |
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public Integer realCompute() { |
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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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public void publicSetRawResult(Integer result) { |
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setRawResult(result); |
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} |
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} |
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|
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// A recursive action failing in base case |
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final class FailingFibTask extends RecursiveTask<Integer> { |
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final int number; |
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int result; |
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FailingFibTask(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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throw new FJException(); |
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FailingFibTask f1 = new FailingFibTask(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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/** |
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* invoke returns value when task completes normally. |
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* isCompletedAbnormally and isCancelled return false for normally |
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* completed tasks. getRawResult of a completed non-null task |
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* returns value; |
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*/ |
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public void testInvoke() { |
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RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
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public Integer realCompute() { |
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FibTask f = new FibTask(8); |
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Integer r = f.invoke(); |
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assertEquals(21, (int) r); |
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checkCompletedNormally(f, r); |
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return r; |
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}}; |
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assertEquals(21, (int) testInvokeOnPool(mainPool(), a)); |
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} |
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|
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/** |
242 |
* quietlyInvoke task returns when task completes normally. |
243 |
* isCompletedAbnormally and isCancelled return false for normally |
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* completed tasks |
245 |
*/ |
246 |
public void testQuietlyInvoke() { |
247 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
248 |
public Integer realCompute() { |
249 |
FibTask f = new FibTask(8); |
250 |
f.quietlyInvoke(); |
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checkCompletedNormally(f, 21); |
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return NoResult; |
253 |
}}; |
254 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
255 |
} |
256 |
|
257 |
/** |
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* join of a forked task returns when task completes |
259 |
*/ |
260 |
public void testForkJoin() { |
261 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
262 |
public Integer realCompute() { |
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FibTask f = new FibTask(8); |
264 |
assertSame(f, f.fork()); |
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Integer r = f.join(); |
266 |
assertEquals(21, (int) r); |
267 |
checkCompletedNormally(f, r); |
268 |
return r; |
269 |
}}; |
270 |
assertEquals(21, (int) testInvokeOnPool(mainPool(), a)); |
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} |
272 |
|
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/** |
274 |
* get of a forked task returns when task completes |
275 |
*/ |
276 |
public void testForkGet() { |
277 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
278 |
public Integer realCompute() throws Exception { |
279 |
FibTask f = new FibTask(8); |
280 |
assertSame(f, f.fork()); |
281 |
Integer r = f.get(); |
282 |
assertEquals(21, (int) r); |
283 |
checkCompletedNormally(f, r); |
284 |
return r; |
285 |
}}; |
286 |
assertEquals(21, (int) testInvokeOnPool(mainPool(), a)); |
287 |
} |
288 |
|
289 |
/** |
290 |
* timed get of a forked task returns when task completes |
291 |
*/ |
292 |
public void testForkTimedGet() { |
293 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
294 |
public Integer realCompute() throws Exception { |
295 |
FibTask f = new FibTask(8); |
296 |
assertSame(f, f.fork()); |
297 |
Integer r = f.get(5L, SECONDS); |
298 |
assertEquals(21, (int) r); |
299 |
checkCompletedNormally(f, r); |
300 |
return r; |
301 |
}}; |
302 |
assertEquals(21, (int) testInvokeOnPool(mainPool(), a)); |
303 |
} |
304 |
|
305 |
/** |
306 |
* quietlyJoin of a forked task returns when task completes |
307 |
*/ |
308 |
public void testForkQuietlyJoin() { |
309 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
310 |
public Integer realCompute() { |
311 |
FibTask f = new FibTask(8); |
312 |
assertSame(f, f.fork()); |
313 |
f.quietlyJoin(); |
314 |
Integer r = f.getRawResult(); |
315 |
assertEquals(21, (int) r); |
316 |
checkCompletedNormally(f, r); |
317 |
return r; |
318 |
}}; |
319 |
assertEquals(21, (int) testInvokeOnPool(mainPool(), a)); |
320 |
} |
321 |
|
322 |
/** |
323 |
* helpQuiesce returns when tasks are complete. |
324 |
* getQueuedTaskCount returns 0 when quiescent |
325 |
*/ |
326 |
public void testForkHelpQuiesce() { |
327 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
328 |
public Integer realCompute() { |
329 |
FibTask f = new FibTask(8); |
330 |
assertSame(f, f.fork()); |
331 |
helpQuiesce(); |
332 |
assertEquals(0, getQueuedTaskCount()); |
333 |
checkCompletedNormally(f, 21); |
334 |
return NoResult; |
335 |
}}; |
336 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
337 |
} |
338 |
|
339 |
/** |
340 |
* invoke task throws exception when task completes abnormally |
341 |
*/ |
342 |
public void testAbnormalInvoke() { |
343 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
344 |
public Integer realCompute() { |
345 |
FailingFibTask f = new FailingFibTask(8); |
346 |
try { |
347 |
f.invoke(); |
348 |
shouldThrow(); |
349 |
} catch (FJException success) { |
350 |
checkCompletedAbnormally(f, success); |
351 |
} |
352 |
return NoResult; |
353 |
}}; |
354 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
355 |
} |
356 |
|
357 |
/** |
358 |
* quietlyInvoke task returns when task completes abnormally |
359 |
*/ |
360 |
public void testAbnormalQuietlyInvoke() { |
361 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
362 |
public Integer realCompute() { |
363 |
FailingFibTask f = new FailingFibTask(8); |
364 |
f.quietlyInvoke(); |
365 |
assertTrue(f.getException() instanceof FJException); |
366 |
checkCompletedAbnormally(f, f.getException()); |
367 |
return NoResult; |
368 |
}}; |
369 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
370 |
} |
371 |
|
372 |
/** |
373 |
* join of a forked task throws exception when task completes abnormally |
374 |
*/ |
375 |
public void testAbnormalForkJoin() { |
376 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
377 |
public Integer realCompute() { |
378 |
FailingFibTask f = new FailingFibTask(8); |
379 |
assertSame(f, f.fork()); |
380 |
try { |
381 |
Integer r = f.join(); |
382 |
shouldThrow(); |
383 |
} catch (FJException success) { |
384 |
checkCompletedAbnormally(f, success); |
385 |
} |
386 |
return NoResult; |
387 |
}}; |
388 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
389 |
} |
390 |
|
391 |
/** |
392 |
* get of a forked task throws exception when task completes abnormally |
393 |
*/ |
394 |
public void testAbnormalForkGet() { |
395 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
396 |
public Integer realCompute() throws Exception { |
397 |
FailingFibTask f = new FailingFibTask(8); |
398 |
assertSame(f, f.fork()); |
399 |
try { |
400 |
Integer r = f.get(); |
401 |
shouldThrow(); |
402 |
} catch (ExecutionException success) { |
403 |
Throwable cause = success.getCause(); |
404 |
assertTrue(cause instanceof FJException); |
405 |
checkCompletedAbnormally(f, cause); |
406 |
} |
407 |
return NoResult; |
408 |
}}; |
409 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
410 |
} |
411 |
|
412 |
/** |
413 |
* timed get of a forked task throws exception when task completes abnormally |
414 |
*/ |
415 |
public void testAbnormalForkTimedGet() { |
416 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
417 |
public Integer realCompute() throws Exception { |
418 |
FailingFibTask f = new FailingFibTask(8); |
419 |
assertSame(f, f.fork()); |
420 |
try { |
421 |
Integer r = f.get(5L, SECONDS); |
422 |
shouldThrow(); |
423 |
} catch (ExecutionException success) { |
424 |
Throwable cause = success.getCause(); |
425 |
assertTrue(cause instanceof FJException); |
426 |
checkCompletedAbnormally(f, cause); |
427 |
} |
428 |
return NoResult; |
429 |
}}; |
430 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
431 |
} |
432 |
|
433 |
/** |
434 |
* quietlyJoin of a forked task returns when task completes abnormally |
435 |
*/ |
436 |
public void testAbnormalForkQuietlyJoin() { |
437 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
438 |
public Integer realCompute() { |
439 |
FailingFibTask f = new FailingFibTask(8); |
440 |
assertSame(f, f.fork()); |
441 |
f.quietlyJoin(); |
442 |
assertTrue(f.getException() instanceof FJException); |
443 |
checkCompletedAbnormally(f, f.getException()); |
444 |
return NoResult; |
445 |
}}; |
446 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
447 |
} |
448 |
|
449 |
/** |
450 |
* invoke task throws exception when task cancelled |
451 |
*/ |
452 |
public void testCancelledInvoke() { |
453 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
454 |
public Integer realCompute() { |
455 |
FibTask f = new FibTask(8); |
456 |
assertTrue(f.cancel(true)); |
457 |
try { |
458 |
Integer r = f.invoke(); |
459 |
shouldThrow(); |
460 |
} catch (CancellationException success) { |
461 |
checkCancelled(f); |
462 |
} |
463 |
return NoResult; |
464 |
}}; |
465 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
466 |
} |
467 |
|
468 |
/** |
469 |
* join of a forked task throws exception when task cancelled |
470 |
*/ |
471 |
public void testCancelledForkJoin() { |
472 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
473 |
public Integer realCompute() { |
474 |
FibTask f = new FibTask(8); |
475 |
assertTrue(f.cancel(true)); |
476 |
assertSame(f, f.fork()); |
477 |
try { |
478 |
Integer r = f.join(); |
479 |
shouldThrow(); |
480 |
} catch (CancellationException success) { |
481 |
checkCancelled(f); |
482 |
} |
483 |
return NoResult; |
484 |
}}; |
485 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
486 |
} |
487 |
|
488 |
/** |
489 |
* get of a forked task throws exception when task cancelled |
490 |
*/ |
491 |
public void testCancelledForkGet() { |
492 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
493 |
public Integer realCompute() throws Exception { |
494 |
FibTask f = new FibTask(8); |
495 |
assertTrue(f.cancel(true)); |
496 |
assertSame(f, f.fork()); |
497 |
try { |
498 |
Integer r = f.get(); |
499 |
shouldThrow(); |
500 |
} catch (CancellationException success) { |
501 |
checkCancelled(f); |
502 |
} |
503 |
return NoResult; |
504 |
}}; |
505 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
506 |
} |
507 |
|
508 |
/** |
509 |
* timed get of a forked task throws exception when task cancelled |
510 |
*/ |
511 |
public void testCancelledForkTimedGet() { |
512 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
513 |
public Integer realCompute() throws Exception { |
514 |
FibTask f = new FibTask(8); |
515 |
assertTrue(f.cancel(true)); |
516 |
assertSame(f, f.fork()); |
517 |
try { |
518 |
Integer r = f.get(5L, SECONDS); |
519 |
shouldThrow(); |
520 |
} catch (CancellationException success) { |
521 |
checkCancelled(f); |
522 |
} |
523 |
return NoResult; |
524 |
}}; |
525 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
526 |
} |
527 |
|
528 |
/** |
529 |
* quietlyJoin of a forked task returns when task cancelled |
530 |
*/ |
531 |
public void testCancelledForkQuietlyJoin() { |
532 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
533 |
public Integer realCompute() { |
534 |
FibTask f = new FibTask(8); |
535 |
assertTrue(f.cancel(true)); |
536 |
assertSame(f, f.fork()); |
537 |
f.quietlyJoin(); |
538 |
checkCancelled(f); |
539 |
return NoResult; |
540 |
}}; |
541 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
542 |
} |
543 |
|
544 |
/** |
545 |
* getPool of executing task returns its pool |
546 |
*/ |
547 |
public void testGetPool() { |
548 |
final ForkJoinPool mainPool = mainPool(); |
549 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
550 |
public Integer realCompute() { |
551 |
assertSame(mainPool, getPool()); |
552 |
return NoResult; |
553 |
}}; |
554 |
assertSame(NoResult, testInvokeOnPool(mainPool, a)); |
555 |
} |
556 |
|
557 |
/** |
558 |
* getPool of non-FJ task returns null |
559 |
*/ |
560 |
public void testGetPool2() { |
561 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
562 |
public Integer realCompute() { |
563 |
assertNull(getPool()); |
564 |
return NoResult; |
565 |
}}; |
566 |
assertSame(NoResult, a.invoke()); |
567 |
} |
568 |
|
569 |
/** |
570 |
* inForkJoinPool of executing task returns true |
571 |
*/ |
572 |
public void testInForkJoinPool() { |
573 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
574 |
public Integer realCompute() { |
575 |
assertTrue(inForkJoinPool()); |
576 |
return NoResult; |
577 |
}}; |
578 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
579 |
} |
580 |
|
581 |
/** |
582 |
* inForkJoinPool of non-FJ task returns false |
583 |
*/ |
584 |
public void testInForkJoinPool2() { |
585 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
586 |
public Integer realCompute() { |
587 |
assertFalse(inForkJoinPool()); |
588 |
return NoResult; |
589 |
}}; |
590 |
assertSame(NoResult, a.invoke()); |
591 |
} |
592 |
|
593 |
/** |
594 |
* The value set by setRawResult is returned by getRawResult |
595 |
*/ |
596 |
public void testSetRawResult() { |
597 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
598 |
public Integer realCompute() { |
599 |
setRawResult(NoResult); |
600 |
assertSame(NoResult, getRawResult()); |
601 |
return NoResult; |
602 |
} |
603 |
}; |
604 |
assertSame(NoResult, a.invoke()); |
605 |
} |
606 |
|
607 |
/** |
608 |
* A reinitialized normally completed task may be re-invoked |
609 |
*/ |
610 |
public void testReinitialize() { |
611 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
612 |
public Integer realCompute() { |
613 |
FibTask f = new FibTask(8); |
614 |
checkNotDone(f); |
615 |
|
616 |
for (int i = 0; i < 3; i++) { |
617 |
Integer r = f.invoke(); |
618 |
assertEquals(21, (int) r); |
619 |
checkCompletedNormally(f, r); |
620 |
f.reinitialize(); |
621 |
f.publicSetRawResult(null); |
622 |
checkNotDone(f); |
623 |
} |
624 |
return NoResult; |
625 |
}}; |
626 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
627 |
} |
628 |
|
629 |
/** |
630 |
* A reinitialized abnormally completed task may be re-invoked |
631 |
*/ |
632 |
public void testReinitializeAbnormal() { |
633 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
634 |
public Integer realCompute() { |
635 |
FailingFibTask f = new FailingFibTask(8); |
636 |
checkNotDone(f); |
637 |
|
638 |
for (int i = 0; i < 3; i++) { |
639 |
try { |
640 |
f.invoke(); |
641 |
shouldThrow(); |
642 |
} catch (FJException success) { |
643 |
checkCompletedAbnormally(f, success); |
644 |
} |
645 |
f.reinitialize(); |
646 |
checkNotDone(f); |
647 |
} |
648 |
return NoResult; |
649 |
}}; |
650 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
651 |
} |
652 |
|
653 |
/** |
654 |
* invoke task throws exception after invoking completeExceptionally |
655 |
*/ |
656 |
public void testCompleteExceptionally() { |
657 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
658 |
public Integer realCompute() { |
659 |
FibTask f = new FibTask(8); |
660 |
f.completeExceptionally(new FJException()); |
661 |
try { |
662 |
Integer r = f.invoke(); |
663 |
shouldThrow(); |
664 |
} catch (FJException success) { |
665 |
checkCompletedAbnormally(f, success); |
666 |
} |
667 |
return NoResult; |
668 |
}}; |
669 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
670 |
} |
671 |
|
672 |
/** |
673 |
* invoke task suppresses execution invoking complete |
674 |
*/ |
675 |
public void testComplete() { |
676 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
677 |
public Integer realCompute() { |
678 |
FibTask f = new FibTask(8); |
679 |
f.complete(NoResult); |
680 |
Integer r = f.invoke(); |
681 |
assertSame(NoResult, r); |
682 |
checkCompletedNormally(f, NoResult); |
683 |
return r; |
684 |
}}; |
685 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
686 |
} |
687 |
|
688 |
/** |
689 |
* invokeAll(t1, t2) invokes all task arguments |
690 |
*/ |
691 |
public void testInvokeAll2() { |
692 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
693 |
public Integer realCompute() { |
694 |
FibTask f = new FibTask(8); |
695 |
FibTask g = new FibTask(9); |
696 |
invokeAll(f, g); |
697 |
checkCompletedNormally(f, 21); |
698 |
checkCompletedNormally(g, 34); |
699 |
return NoResult; |
700 |
}}; |
701 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
702 |
} |
703 |
|
704 |
/** |
705 |
* invokeAll(tasks) with 1 argument invokes task |
706 |
*/ |
707 |
public void testInvokeAll1() { |
708 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
709 |
public Integer realCompute() { |
710 |
FibTask f = new FibTask(8); |
711 |
invokeAll(f); |
712 |
checkCompletedNormally(f, 21); |
713 |
return NoResult; |
714 |
}}; |
715 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
716 |
} |
717 |
|
718 |
/** |
719 |
* invokeAll(tasks) with > 2 argument invokes tasks |
720 |
*/ |
721 |
public void testInvokeAll3() { |
722 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
723 |
public Integer realCompute() { |
724 |
FibTask f = new FibTask(8); |
725 |
FibTask g = new FibTask(9); |
726 |
FibTask h = new FibTask(7); |
727 |
invokeAll(f, g, h); |
728 |
assertTrue(f.isDone()); |
729 |
assertTrue(g.isDone()); |
730 |
assertTrue(h.isDone()); |
731 |
checkCompletedNormally(f, 21); |
732 |
checkCompletedNormally(g, 34); |
733 |
checkCompletedNormally(h, 13); |
734 |
return NoResult; |
735 |
}}; |
736 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
737 |
} |
738 |
|
739 |
/** |
740 |
* invokeAll(collection) invokes all tasks in the collection |
741 |
*/ |
742 |
public void testInvokeAllCollection() { |
743 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
744 |
public Integer realCompute() { |
745 |
FibTask f = new FibTask(8); |
746 |
FibTask g = new FibTask(9); |
747 |
FibTask h = new FibTask(7); |
748 |
HashSet set = new HashSet(); |
749 |
set.add(f); |
750 |
set.add(g); |
751 |
set.add(h); |
752 |
invokeAll(set); |
753 |
assertTrue(f.isDone()); |
754 |
assertTrue(g.isDone()); |
755 |
assertTrue(h.isDone()); |
756 |
checkCompletedNormally(f, 21); |
757 |
checkCompletedNormally(g, 34); |
758 |
checkCompletedNormally(h, 13); |
759 |
return NoResult; |
760 |
}}; |
761 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
762 |
} |
763 |
|
764 |
/** |
765 |
* invokeAll(tasks) with any null task throws NPE |
766 |
*/ |
767 |
public void testInvokeAllNPE() { |
768 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
769 |
public Integer realCompute() { |
770 |
FibTask f = new FibTask(8); |
771 |
FibTask g = new FibTask(9); |
772 |
FibTask h = null; |
773 |
try { |
774 |
invokeAll(f, g, h); |
775 |
shouldThrow(); |
776 |
} catch (NullPointerException success) {} |
777 |
return NoResult; |
778 |
}}; |
779 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
780 |
} |
781 |
|
782 |
/** |
783 |
* invokeAll(t1, t2) throw exception if any task does |
784 |
*/ |
785 |
public void testAbnormalInvokeAll2() { |
786 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
787 |
public Integer realCompute() { |
788 |
FibTask f = new FibTask(8); |
789 |
FailingFibTask g = new FailingFibTask(9); |
790 |
try { |
791 |
invokeAll(f, g); |
792 |
shouldThrow(); |
793 |
} catch (FJException success) { |
794 |
checkCompletedAbnormally(g, success); |
795 |
} |
796 |
return NoResult; |
797 |
}}; |
798 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
799 |
} |
800 |
|
801 |
/** |
802 |
* invokeAll(tasks) with 1 argument throws exception if task does |
803 |
*/ |
804 |
public void testAbnormalInvokeAll1() { |
805 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
806 |
public Integer realCompute() { |
807 |
FailingFibTask g = new FailingFibTask(9); |
808 |
try { |
809 |
invokeAll(g); |
810 |
shouldThrow(); |
811 |
} catch (FJException success) { |
812 |
checkCompletedAbnormally(g, success); |
813 |
} |
814 |
return NoResult; |
815 |
}}; |
816 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
817 |
} |
818 |
|
819 |
/** |
820 |
* invokeAll(tasks) with > 2 argument throws exception if any task does |
821 |
*/ |
822 |
public void testAbnormalInvokeAll3() { |
823 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
824 |
public Integer realCompute() { |
825 |
FibTask f = new FibTask(8); |
826 |
FailingFibTask g = new FailingFibTask(9); |
827 |
FibTask h = new FibTask(7); |
828 |
try { |
829 |
invokeAll(f, g, h); |
830 |
shouldThrow(); |
831 |
} catch (FJException success) { |
832 |
checkCompletedAbnormally(g, success); |
833 |
} |
834 |
return NoResult; |
835 |
}}; |
836 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
837 |
} |
838 |
|
839 |
/** |
840 |
* invokeAll(collection) throws exception if any task does |
841 |
*/ |
842 |
public void testAbnormalInvokeAllCollection() { |
843 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
844 |
public Integer realCompute() { |
845 |
FailingFibTask f = new FailingFibTask(8); |
846 |
FibTask g = new FibTask(9); |
847 |
FibTask h = new FibTask(7); |
848 |
HashSet set = new HashSet(); |
849 |
set.add(f); |
850 |
set.add(g); |
851 |
set.add(h); |
852 |
try { |
853 |
invokeAll(set); |
854 |
shouldThrow(); |
855 |
} catch (FJException success) { |
856 |
checkCompletedAbnormally(f, success); |
857 |
} |
858 |
return NoResult; |
859 |
}}; |
860 |
assertSame(NoResult, testInvokeOnPool(mainPool(), a)); |
861 |
} |
862 |
|
863 |
/** |
864 |
* tryUnfork returns true for most recent unexecuted task, |
865 |
* and suppresses execution |
866 |
*/ |
867 |
public void testTryUnfork() { |
868 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
869 |
public Integer realCompute() { |
870 |
FibTask g = new FibTask(9); |
871 |
assertSame(g, g.fork()); |
872 |
FibTask f = new FibTask(8); |
873 |
assertSame(f, f.fork()); |
874 |
assertTrue(f.tryUnfork()); |
875 |
helpQuiesce(); |
876 |
checkNotDone(f); |
877 |
checkCompletedNormally(g, 34); |
878 |
return NoResult; |
879 |
}}; |
880 |
assertSame(NoResult, testInvokeOnPool(singletonPool(), a)); |
881 |
} |
882 |
|
883 |
/** |
884 |
* getSurplusQueuedTaskCount returns > 0 when |
885 |
* there are more tasks than threads |
886 |
*/ |
887 |
public void testGetSurplusQueuedTaskCount() { |
888 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
889 |
public Integer realCompute() { |
890 |
FibTask h = new FibTask(7); |
891 |
assertSame(h, h.fork()); |
892 |
FibTask g = new FibTask(9); |
893 |
assertSame(g, g.fork()); |
894 |
FibTask f = new FibTask(8); |
895 |
assertSame(f, f.fork()); |
896 |
assertTrue(getSurplusQueuedTaskCount() > 0); |
897 |
helpQuiesce(); |
898 |
assertEquals(0, getSurplusQueuedTaskCount()); |
899 |
checkCompletedNormally(f, 21); |
900 |
checkCompletedNormally(g, 34); |
901 |
checkCompletedNormally(h, 13); |
902 |
return NoResult; |
903 |
}}; |
904 |
assertSame(NoResult, testInvokeOnPool(singletonPool(), a)); |
905 |
} |
906 |
|
907 |
/** |
908 |
* peekNextLocalTask returns most recent unexecuted task. |
909 |
*/ |
910 |
public void testPeekNextLocalTask() { |
911 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
912 |
public Integer realCompute() { |
913 |
FibTask g = new FibTask(9); |
914 |
assertSame(g, g.fork()); |
915 |
FibTask f = new FibTask(8); |
916 |
assertSame(f, f.fork()); |
917 |
assertSame(f, peekNextLocalTask()); |
918 |
checkCompletesNormally(f, 21); |
919 |
helpQuiesce(); |
920 |
checkCompletedNormally(g, 34); |
921 |
return NoResult; |
922 |
}}; |
923 |
assertSame(NoResult, testInvokeOnPool(singletonPool(), a)); |
924 |
} |
925 |
|
926 |
/** |
927 |
* pollNextLocalTask returns most recent unexecuted task |
928 |
* without executing it |
929 |
*/ |
930 |
public void testPollNextLocalTask() { |
931 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
932 |
public Integer realCompute() { |
933 |
FibTask g = new FibTask(9); |
934 |
assertSame(g, g.fork()); |
935 |
FibTask f = new FibTask(8); |
936 |
assertSame(f, f.fork()); |
937 |
assertSame(f, pollNextLocalTask()); |
938 |
helpQuiesce(); |
939 |
checkNotDone(f); |
940 |
checkCompletedNormally(g, 34); |
941 |
return NoResult; |
942 |
}}; |
943 |
assertSame(NoResult, testInvokeOnPool(singletonPool(), a)); |
944 |
} |
945 |
|
946 |
/** |
947 |
* pollTask returns an unexecuted task without executing it |
948 |
*/ |
949 |
public void testPollTask() { |
950 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
951 |
public Integer realCompute() { |
952 |
FibTask g = new FibTask(9); |
953 |
assertSame(g, g.fork()); |
954 |
FibTask f = new FibTask(8); |
955 |
assertSame(f, f.fork()); |
956 |
assertSame(f, pollTask()); |
957 |
helpQuiesce(); |
958 |
checkNotDone(f); |
959 |
checkCompletedNormally(g, 34); |
960 |
return NoResult; |
961 |
}}; |
962 |
assertSame(NoResult, testInvokeOnPool(singletonPool(), a)); |
963 |
} |
964 |
|
965 |
/** |
966 |
* peekNextLocalTask returns least recent unexecuted task in async mode |
967 |
*/ |
968 |
public void testPeekNextLocalTaskAsync() { |
969 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
970 |
public Integer realCompute() { |
971 |
FibTask g = new FibTask(9); |
972 |
assertSame(g, g.fork()); |
973 |
FibTask f = new FibTask(8); |
974 |
assertSame(f, f.fork()); |
975 |
assertSame(g, peekNextLocalTask()); |
976 |
assertEquals(21, (int) f.join()); |
977 |
helpQuiesce(); |
978 |
checkCompletedNormally(f, 21); |
979 |
checkCompletedNormally(g, 34); |
980 |
return NoResult; |
981 |
}}; |
982 |
assertSame(NoResult, testInvokeOnPool(asyncSingletonPool(), a)); |
983 |
} |
984 |
|
985 |
/** |
986 |
* pollNextLocalTask returns least recent unexecuted task without |
987 |
* executing it, in async mode |
988 |
*/ |
989 |
public void testPollNextLocalTaskAsync() { |
990 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
991 |
public Integer realCompute() { |
992 |
FibTask g = new FibTask(9); |
993 |
assertSame(g, g.fork()); |
994 |
FibTask f = new FibTask(8); |
995 |
assertSame(f, f.fork()); |
996 |
assertSame(g, pollNextLocalTask()); |
997 |
helpQuiesce(); |
998 |
checkCompletedNormally(f, 21); |
999 |
checkNotDone(g); |
1000 |
return NoResult; |
1001 |
}}; |
1002 |
assertSame(NoResult, testInvokeOnPool(asyncSingletonPool(), a)); |
1003 |
} |
1004 |
|
1005 |
/** |
1006 |
* pollTask returns an unexecuted task without executing it, in |
1007 |
* async mode |
1008 |
*/ |
1009 |
public void testPollTaskAsync() { |
1010 |
RecursiveTask<Integer> a = new CheckedRecursiveTask<Integer>() { |
1011 |
public Integer realCompute() { |
1012 |
FibTask g = new FibTask(9); |
1013 |
assertSame(g, g.fork()); |
1014 |
FibTask f = new FibTask(8); |
1015 |
assertSame(f, f.fork()); |
1016 |
assertSame(g, pollTask()); |
1017 |
helpQuiesce(); |
1018 |
checkCompletedNormally(f, 21); |
1019 |
checkNotDone(g); |
1020 |
return NoResult; |
1021 |
}}; |
1022 |
assertSame(NoResult, testInvokeOnPool(asyncSingletonPool(), a)); |
1023 |
} |
1024 |
|
1025 |
} |