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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.SynchronousQueue; |
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import java.util.concurrent.ThreadLocalRandom; |
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import junit.framework.Test; |
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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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main(suite(), args); |
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} |
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public static Test suite() { |
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} |
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/** |
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* addAll throws ISE if no active taker |
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* addAll throws IllegalStateException if no active taker |
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*/ |
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public void testAddAll_ISE() { testAddAll_ISE(false); } |
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public void testAddAll_ISE_fair() { testAddAll_ISE(true); } |
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}}); |
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await(pleaseInterrupt); |
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assertThreadStaysAlive(t); |
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assertThreadBlocks(t, Thread.State.WAITING); |
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t.interrupt(); |
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awaitTermination(t); |
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assertEquals(0, q.remainingCapacity()); |
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pleaseTake.countDown(); |
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q.put(one); |
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Thread.currentThread().interrupt(); |
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try { |
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q.put(99); |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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|
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pleaseInterrupt.countDown(); |
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try { |
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q.put(99); |
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catch (InterruptedException e) { threadUnexpectedException(e); } |
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await(pleaseInterrupt); |
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assertThreadStaysAlive(t); |
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assertThreadBlocks(t, Thread.State.WAITING); |
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t.interrupt(); |
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awaitTermination(t); |
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assertEquals(0, q.remainingCapacity()); |
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/** |
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* timed offer times out if elements not taken |
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*/ |
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public void testTimedOffer() { testTimedOffer(false); } |
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public void testTimedOffer_fair() { testTimedOffer(true); } |
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public void testTimedOffer(boolean fair) { |
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public void testTimedOffer() { |
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final boolean fair = ThreadLocalRandom.current().nextBoolean(); |
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final SynchronousQueue q = new SynchronousQueue(fair); |
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final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
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Thread t = newStartedThread(new CheckedRunnable() { |
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long startTime = System.nanoTime(); |
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assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
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Thread.currentThread().interrupt(); |
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try { |
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q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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|
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pleaseInterrupt.countDown(); |
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try { |
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q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
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shouldThrow(); |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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}}); |
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await(pleaseInterrupt); |
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assertThreadStaysAlive(t); |
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assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
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t.interrupt(); |
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awaitTermination(t); |
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} |
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/** |
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* timed poll with nonzero timeout times out if no active putter |
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*/ |
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public void testTimedPoll() { testTimedPoll(false); } |
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public void testTimedPoll_fair() { testTimedPoll(true); } |
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public void testTimedPoll(boolean fair) { |
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public void testTimedPoll() { |
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final boolean fair = ThreadLocalRandom.current().nextBoolean(); |
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final SynchronousQueue q = new SynchronousQueue(fair); |
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long startTime = System.nanoTime(); |
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final long startTime = System.nanoTime(); |
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try { assertNull(q.poll(timeoutMillis(), MILLISECONDS)); } |
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catch (InterruptedException e) { threadUnexpectedException(e); } |
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
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* timed poll before a delayed offer times out, returning null; |
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* after offer succeeds; on interruption throws |
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*/ |
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public void testTimedPollWithOffer() { testTimedPollWithOffer(false); } |
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public void testTimedPollWithOffer_fair() { testTimedPollWithOffer(true); } |
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public void testTimedPollWithOffer(boolean fair) { |
260 |
> |
public void testTimedPollWithOffer() { |
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final boolean fair = ThreadLocalRandom.current().nextBoolean(); |
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final SynchronousQueue q = new SynchronousQueue(fair); |
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final CountDownLatch pleaseOffer = new CountDownLatch(1); |
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final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
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pleaseOffer.countDown(); |
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startTime = System.nanoTime(); |
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assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
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assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS); |
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Thread.currentThread().interrupt(); |
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try { |
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shouldThrow(); |
286 |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
288 |
+ |
|
289 |
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assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
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}}); |
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await(pleaseOffer); |
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long startTime = System.nanoTime(); |
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try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); } |
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catch (InterruptedException e) { threadUnexpectedException(e); } |
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< |
assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS); |
296 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
297 |
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await(pleaseInterrupt); |
299 |
< |
assertThreadStaysAlive(t); |
299 |
> |
assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
300 |
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t.interrupt(); |
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awaitTermination(t); |
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} |
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public void testToArray2() { testToArray2(false); } |
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public void testToArray2_fair() { testToArray2(true); } |
417 |
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public void testToArray2(boolean fair) { |
418 |
< |
final SynchronousQueue<Integer> q |
404 |
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= new SynchronousQueue<Integer>(fair); |
418 |
> |
final SynchronousQueue<Integer> q = new SynchronousQueue<>(fair); |
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Integer[] a; |
420 |
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a = new Integer[0]; |
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} |
453 |
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/** |
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< |
* iterator remove throws ISE |
455 |
> |
* iterator remove throws IllegalStateException |
456 |
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*/ |
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public void testIteratorRemove() { testIteratorRemove(false); } |
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public void testIteratorRemove_fair() { testIteratorRemove(true); } |
483 |
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public void testOfferInExecutor_fair() { testOfferInExecutor(true); } |
484 |
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public void testOfferInExecutor(boolean fair) { |
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final SynchronousQueue q = new SynchronousQueue(fair); |
472 |
– |
ExecutorService executor = Executors.newFixedThreadPool(2); |
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final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
487 |
+ |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
488 |
+ |
try (PoolCleaner cleaner = cleaner(executor)) { |
489 |
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|
490 |
< |
executor.execute(new CheckedRunnable() { |
491 |
< |
public void realRun() throws InterruptedException { |
492 |
< |
assertFalse(q.offer(one)); |
493 |
< |
threadsStarted.await(); |
494 |
< |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
495 |
< |
assertEquals(0, q.remainingCapacity()); |
496 |
< |
}}); |
497 |
< |
|
498 |
< |
executor.execute(new CheckedRunnable() { |
499 |
< |
public void realRun() throws InterruptedException { |
500 |
< |
threadsStarted.await(); |
501 |
< |
assertSame(one, q.take()); |
502 |
< |
}}); |
503 |
< |
|
489 |
< |
joinPool(executor); |
490 |
> |
executor.execute(new CheckedRunnable() { |
491 |
> |
public void realRun() throws InterruptedException { |
492 |
> |
assertFalse(q.offer(one)); |
493 |
> |
threadsStarted.await(); |
494 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
495 |
> |
assertEquals(0, q.remainingCapacity()); |
496 |
> |
}}); |
497 |
> |
|
498 |
> |
executor.execute(new CheckedRunnable() { |
499 |
> |
public void realRun() throws InterruptedException { |
500 |
> |
threadsStarted.await(); |
501 |
> |
assertSame(one, q.take()); |
502 |
> |
}}); |
503 |
> |
} |
504 |
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} |
505 |
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|
506 |
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/** |
511 |
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public void testPollInExecutor(boolean fair) { |
512 |
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final SynchronousQueue q = new SynchronousQueue(fair); |
513 |
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final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
514 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
515 |
< |
executor.execute(new CheckedRunnable() { |
516 |
< |
public void realRun() throws InterruptedException { |
517 |
< |
assertNull(q.poll()); |
518 |
< |
threadsStarted.await(); |
519 |
< |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
520 |
< |
assertTrue(q.isEmpty()); |
521 |
< |
}}); |
522 |
< |
|
523 |
< |
executor.execute(new CheckedRunnable() { |
524 |
< |
public void realRun() throws InterruptedException { |
525 |
< |
threadsStarted.await(); |
526 |
< |
q.put(one); |
527 |
< |
}}); |
528 |
< |
|
529 |
< |
joinPool(executor); |
514 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
515 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
516 |
> |
executor.execute(new CheckedRunnable() { |
517 |
> |
public void realRun() throws InterruptedException { |
518 |
> |
assertNull(q.poll()); |
519 |
> |
threadsStarted.await(); |
520 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
521 |
> |
assertTrue(q.isEmpty()); |
522 |
> |
}}); |
523 |
> |
|
524 |
> |
executor.execute(new CheckedRunnable() { |
525 |
> |
public void realRun() throws InterruptedException { |
526 |
> |
threadsStarted.await(); |
527 |
> |
q.put(one); |
528 |
> |
}}); |
529 |
> |
} |
530 |
|
} |
531 |
|
|
532 |
|
/** |
533 |
< |
* a deserialized serialized queue is usable |
533 |
> |
* a deserialized/reserialized queue is usable |
534 |
|
*/ |
535 |
|
public void testSerialization() { |
536 |
|
final SynchronousQueue x = new SynchronousQueue(); |
583 |
|
fail("timed out"); |
584 |
|
Thread.yield(); |
585 |
|
} |
586 |
< |
assertTrue(l.size() == 1); |
586 |
> |
assertEquals(1, l.size()); |
587 |
|
assertSame(one, l.get(0)); |
588 |
|
awaitTermination(t); |
589 |
|
} |
604 |
|
}}); |
605 |
|
|
606 |
|
ArrayList l = new ArrayList(); |
607 |
< |
delay(SHORT_DELAY_MS); |
608 |
< |
q.drainTo(l, 1); |
607 |
> |
int drained; |
608 |
> |
while ((drained = q.drainTo(l, 1)) == 0) Thread.yield(); |
609 |
> |
assertEquals(1, drained); |
610 |
|
assertEquals(1, l.size()); |
611 |
< |
q.drainTo(l, 1); |
611 |
> |
while ((drained = q.drainTo(l, 1)) == 0) Thread.yield(); |
612 |
> |
assertEquals(1, drained); |
613 |
|
assertEquals(2, l.size()); |
614 |
|
assertTrue(l.contains(one)); |
615 |
|
assertTrue(l.contains(two)); |