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; |
403 |
|
* Cancelling a subscription eventually causes no more onNexts to be issued |
404 |
|
*/ |
405 |
|
public void testCancel() { |
406 |
< |
SubmissionPublisher<Integer> p = basicPublisher(); |
406 |
> |
SubmissionPublisher<Integer> p = |
407 |
> |
new SubmissionPublisher<Integer>(basicExecutor, 4); // must be < 20 |
408 |
|
TestSubscriber s1 = new TestSubscriber(); |
409 |
|
TestSubscriber s2 = new TestSubscriber(); |
410 |
|
p.subscribe(s1); |
641 |
|
p.subscribe(s1); |
642 |
|
p.subscribe(s2); |
643 |
|
for (int i = 1; i <= 20; ++i) { |
642 |
– |
assertTrue(p.estimateMinimumDemand() <= 1); |
644 |
|
assertTrue(p.submit(i) >= 0); |
645 |
|
} |
646 |
|
p.close(); |
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 |
|
} |