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* Pat Fisher, Mike Judd. |
7 |
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*/ |
8 |
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|
9 |
< |
import junit.framework.*; |
10 |
< |
import java.util.Arrays; |
9 |
> |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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> |
|
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.Queue; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.CountDownLatch; |
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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 static java.util.concurrent.TimeUnit.MILLISECONDS; |
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|
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import junit.framework.Test; |
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|
24 |
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public class SynchronousQueueTest extends JSR166TestCase { |
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|
36 |
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} |
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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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|
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public static Test suite() { |
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} |
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|
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/** |
99 |
< |
* 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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|
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await(pleaseInterrupt); |
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< |
assertThreadStaysAlive(t); |
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if (randomBoolean()) 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()); |
158 |
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pleaseTake.countDown(); |
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q.put(one); |
160 |
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|
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Thread.currentThread().interrupt(); |
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try { |
163 |
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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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|
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await(pleaseInterrupt); |
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< |
assertThreadStaysAlive(t); |
182 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
183 |
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t.interrupt(); |
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awaitTermination(t); |
185 |
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assertEquals(0, q.remainingCapacity()); |
188 |
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/** |
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* timed offer times out if elements not taken |
190 |
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*/ |
191 |
< |
public void testTimedOffer() { testTimedOffer(false); } |
192 |
< |
public void testTimedOffer_fair() { testTimedOffer(true); } |
185 |
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public void testTimedOffer(boolean fair) { |
191 |
> |
public void testTimedOffer() { |
192 |
> |
final boolean fair = randomBoolean(); |
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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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public void realRun() throws InterruptedException { |
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long startTime = System.nanoTime(); |
198 |
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|
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assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
200 |
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
201 |
+ |
|
202 |
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Thread.currentThread().interrupt(); |
203 |
+ |
try { |
204 |
+ |
q.offer(new Object(), randomTimeout(), randomTimeUnit()); |
205 |
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shouldThrow(); |
206 |
+ |
} catch (InterruptedException success) {} |
207 |
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assertFalse(Thread.interrupted()); |
208 |
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|
209 |
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pleaseInterrupt.countDown(); |
210 |
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try { |
211 |
< |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
211 |
> |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
212 |
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shouldThrow(); |
213 |
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} catch (InterruptedException success) {} |
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assertFalse(Thread.interrupted()); |
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|
216 |
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assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
217 |
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}}); |
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|
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await(pleaseInterrupt); |
220 |
< |
assertThreadStaysAlive(t); |
220 |
> |
if (randomBoolean()) 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); } |
250 |
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public void testTimedPoll_fair() { testTimedPoll(true); } |
232 |
< |
public void testTimedPoll(boolean fair) { |
249 |
> |
public void testTimedPoll() { |
250 |
> |
final boolean fair = randomBoolean(); |
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final SynchronousQueue q = new SynchronousQueue(fair); |
252 |
< |
long startTime = System.nanoTime(); |
252 |
> |
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; |
260 |
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* after offer succeeds; on interruption throws |
261 |
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*/ |
262 |
< |
public void testTimedPollWithOffer() { testTimedPollWithOffer(false); } |
263 |
< |
public void testTimedPollWithOffer_fair() { testTimedPollWithOffer(true); } |
246 |
< |
public void testTimedPollWithOffer(boolean fair) { |
262 |
> |
public void testTimedPollWithOffer() { |
263 |
> |
final boolean fair = randomBoolean(); |
264 |
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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(); |
275 |
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assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
259 |
– |
assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS); |
276 |
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|
277 |
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Thread.currentThread().interrupt(); |
278 |
|
try { |
279 |
< |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
279 |
> |
q.poll(randomTimeout(), randomTimeUnit()); |
280 |
|
shouldThrow(); |
281 |
|
} catch (InterruptedException success) {} |
282 |
|
assertFalse(Thread.interrupted()); |
287 |
|
shouldThrow(); |
288 |
|
} catch (InterruptedException success) {} |
289 |
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assertFalse(Thread.interrupted()); |
290 |
+ |
|
291 |
+ |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
292 |
|
}}); |
293 |
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|
294 |
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await(pleaseOffer); |
295 |
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long startTime = System.nanoTime(); |
296 |
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try { assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); } |
297 |
|
catch (InterruptedException e) { threadUnexpectedException(e); } |
298 |
< |
assertTrue(millisElapsedSince(startTime) < MEDIUM_DELAY_MS); |
298 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
299 |
|
|
300 |
|
await(pleaseInterrupt); |
301 |
< |
assertThreadStaysAlive(t); |
301 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
302 |
|
t.interrupt(); |
303 |
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awaitTermination(t); |
304 |
|
} |
417 |
|
public void testToArray2() { testToArray2(false); } |
418 |
|
public void testToArray2_fair() { testToArray2(true); } |
419 |
|
public void testToArray2(boolean fair) { |
420 |
< |
final SynchronousQueue<Integer> q |
403 |
< |
= new SynchronousQueue<Integer>(fair); |
420 |
> |
final SynchronousQueue<Integer> q = new SynchronousQueue<>(fair); |
421 |
|
Integer[] a; |
422 |
|
|
423 |
|
a = new Integer[0]; |
439 |
|
public void testToArray_null(boolean fair) { |
440 |
|
final SynchronousQueue q = new SynchronousQueue(fair); |
441 |
|
try { |
442 |
< |
Object o[] = q.toArray(null); |
442 |
> |
Object[] o = q.toArray((Object[])null); |
443 |
|
shouldThrow(); |
444 |
|
} catch (NullPointerException success) {} |
445 |
|
} |
450 |
|
public void testIterator() { testIterator(false); } |
451 |
|
public void testIterator_fair() { testIterator(true); } |
452 |
|
public void testIterator(boolean fair) { |
453 |
< |
final SynchronousQueue q = new SynchronousQueue(fair); |
437 |
< |
Iterator it = q.iterator(); |
438 |
< |
assertFalse(it.hasNext()); |
439 |
< |
try { |
440 |
< |
Object x = it.next(); |
441 |
< |
shouldThrow(); |
442 |
< |
} catch (NoSuchElementException success) {} |
453 |
> |
assertIteratorExhausted(new SynchronousQueue(fair).iterator()); |
454 |
|
} |
455 |
|
|
456 |
|
/** |
457 |
< |
* iterator remove throws ISE |
457 |
> |
* iterator remove throws IllegalStateException |
458 |
|
*/ |
459 |
|
public void testIteratorRemove() { testIteratorRemove(false); } |
460 |
|
public void testIteratorRemove_fair() { testIteratorRemove(true); } |
485 |
|
public void testOfferInExecutor_fair() { testOfferInExecutor(true); } |
486 |
|
public void testOfferInExecutor(boolean fair) { |
487 |
|
final SynchronousQueue q = new SynchronousQueue(fair); |
477 |
– |
ExecutorService executor = Executors.newFixedThreadPool(2); |
488 |
|
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
489 |
+ |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
490 |
+ |
try (PoolCleaner cleaner = cleaner(executor)) { |
491 |
|
|
492 |
< |
executor.execute(new CheckedRunnable() { |
493 |
< |
public void realRun() throws InterruptedException { |
494 |
< |
assertFalse(q.offer(one)); |
495 |
< |
threadsStarted.await(); |
496 |
< |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
497 |
< |
assertEquals(0, q.remainingCapacity()); |
498 |
< |
}}); |
499 |
< |
|
500 |
< |
executor.execute(new CheckedRunnable() { |
501 |
< |
public void realRun() throws InterruptedException { |
502 |
< |
threadsStarted.await(); |
503 |
< |
assertSame(one, q.take()); |
504 |
< |
}}); |
505 |
< |
|
494 |
< |
joinPool(executor); |
492 |
> |
executor.execute(new CheckedRunnable() { |
493 |
> |
public void realRun() throws InterruptedException { |
494 |
> |
assertFalse(q.offer(one)); |
495 |
> |
threadsStarted.await(); |
496 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
497 |
> |
assertEquals(0, q.remainingCapacity()); |
498 |
> |
}}); |
499 |
> |
|
500 |
> |
executor.execute(new CheckedRunnable() { |
501 |
> |
public void realRun() throws InterruptedException { |
502 |
> |
threadsStarted.await(); |
503 |
> |
assertSame(one, q.take()); |
504 |
> |
}}); |
505 |
> |
} |
506 |
|
} |
507 |
|
|
508 |
|
/** |
513 |
|
public void testPollInExecutor(boolean fair) { |
514 |
|
final SynchronousQueue q = new SynchronousQueue(fair); |
515 |
|
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
516 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
517 |
< |
executor.execute(new CheckedRunnable() { |
518 |
< |
public void realRun() throws InterruptedException { |
519 |
< |
assertNull(q.poll()); |
520 |
< |
threadsStarted.await(); |
521 |
< |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
522 |
< |
assertTrue(q.isEmpty()); |
523 |
< |
}}); |
524 |
< |
|
525 |
< |
executor.execute(new CheckedRunnable() { |
526 |
< |
public void realRun() throws InterruptedException { |
527 |
< |
threadsStarted.await(); |
528 |
< |
q.put(one); |
529 |
< |
}}); |
530 |
< |
|
531 |
< |
joinPool(executor); |
516 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
517 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
518 |
> |
executor.execute(new CheckedRunnable() { |
519 |
> |
public void realRun() throws InterruptedException { |
520 |
> |
assertNull(q.poll()); |
521 |
> |
threadsStarted.await(); |
522 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
523 |
> |
assertTrue(q.isEmpty()); |
524 |
> |
}}); |
525 |
> |
|
526 |
> |
executor.execute(new CheckedRunnable() { |
527 |
> |
public void realRun() throws InterruptedException { |
528 |
> |
threadsStarted.await(); |
529 |
> |
q.put(one); |
530 |
> |
}}); |
531 |
> |
} |
532 |
|
} |
533 |
|
|
534 |
|
/** |
535 |
< |
* a deserialized serialized queue is usable |
535 |
> |
* a deserialized/reserialized queue is usable |
536 |
|
*/ |
537 |
|
public void testSerialization() { |
538 |
|
final SynchronousQueue x = new SynchronousQueue(); |
585 |
|
fail("timed out"); |
586 |
|
Thread.yield(); |
587 |
|
} |
588 |
< |
assertTrue(l.size() == 1); |
588 |
> |
assertEquals(1, l.size()); |
589 |
|
assertSame(one, l.get(0)); |
590 |
|
awaitTermination(t); |
591 |
|
} |
606 |
|
}}); |
607 |
|
|
608 |
|
ArrayList l = new ArrayList(); |
609 |
< |
delay(SHORT_DELAY_MS); |
610 |
< |
q.drainTo(l, 1); |
609 |
> |
int drained; |
610 |
> |
while ((drained = q.drainTo(l, 1)) == 0) Thread.yield(); |
611 |
> |
assertEquals(1, drained); |
612 |
|
assertEquals(1, l.size()); |
613 |
< |
q.drainTo(l, 1); |
613 |
> |
while ((drained = q.drainTo(l, 1)) == 0) Thread.yield(); |
614 |
> |
assertEquals(1, drained); |
615 |
|
assertEquals(2, l.size()); |
616 |
|
assertTrue(l.contains(one)); |
617 |
|
assertTrue(l.contains(two)); |
619 |
|
awaitTermination(t2); |
620 |
|
} |
621 |
|
|
622 |
+ |
/** |
623 |
+ |
* remove(null), contains(null) always return false |
624 |
+ |
*/ |
625 |
+ |
public void testNeverContainsNull() { |
626 |
+ |
Collection<?> q = new SynchronousQueue(); |
627 |
+ |
assertFalse(q.contains(null)); |
628 |
+ |
assertFalse(q.remove(null)); |
629 |
+ |
} |
630 |
+ |
|
631 |
|
} |