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root/jsr166/jsr166/src/test/tck/SubmissionPublisherTest.java

Comparing jsr166/src/test/tck/SubmissionPublisherTest.java (file contents):
Revision 1.23 by dl, Sun Nov 26 21:37:56 2017 UTC vs.
Revision 1.25 by jsr166, Mon Dec 11 00:16:40 2017 UTC

#	Line 6 | Line 6
6		*/
7
8		import java.util.concurrent.CompletableFuture;
9	+	import java.util.concurrent.CountDownLatch;
10		import java.util.concurrent.Executor;
11		import java.util.concurrent.Executors;
12		import java.util.concurrent.Flow;
#	Line 978 | Line 979 | public class SubmissionPublisherTest ext
979		assertTrue(count.get() < n);
980		}
981
982	+	/**
983	+	* Tests scenario for
984	+	* JDK-8187947: A race condition in SubmissionPublisher
985	+	* cvs update -D '2017-11-25' src/main/java/util/concurrent/SubmissionPublisher.java && ant -Djsr166.expensiveTests=true -Djsr166.tckTestClass=SubmissionPublisherTest -Djsr166.methodFilter=testMissedSignal tck; cvs update -A src/main/java/util/concurrent/SubmissionPublisher.java
986	+	*/
987	+	public void testMissedSignal_8187947() throws Exception {
988	+	if (!atLeastJava9()) return; // backport to jdk8 too hard
989	+	final int N = expensiveTests ? (1 << 20) : (1 << 10);
990	+	final CountDownLatch finished = new CountDownLatch(1);
991	+	final SubmissionPublisher<Boolean> pub = new SubmissionPublisher<>();
992	+	class Sub implements Subscriber<Boolean> {
993	+	int received;
994	+	public void onSubscribe(Subscription s) {
995	+	s.request(N);
996	+	}
997	+	public void onNext(Boolean item) {
998	+	if (++received == N)
999	+	finished.countDown();
1000	+	else
1001	+	CompletableFuture.runAsync(() -> pub.submit(Boolean.TRUE));
1002	+	}
1003	+	public void onError(Throwable t) { throw new AssertionError(t); }
1004	+	public void onComplete() {}
1005	+	}
1006	+	pub.subscribe(new Sub());
1007	+	CompletableFuture.runAsync(() -> pub.submit(Boolean.TRUE));
1008	+	await(finished);
1009	+	}
1010		}

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