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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.41 by jsr166, Wed Aug 25 00:07:03 2010 UTC vs.
Revision 1.51 by jsr166, Mon May 2 00:14:09 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
#	Line 59 | Line 59 | public class ReentrantReadWriteLockTest
59		}
60
61		/**
62	+	* Releases lock, checking that it had a hold count of 1.
63	+	*/
64	+	void releaseLock(ReentrantReadWriteLock.WriteLock lock) {
65	+	assertTrue(lock.isHeldByCurrentThread());
66	+	lock.unlock();
67	+	assertFalse(lock.isHeldByCurrentThread());
68	+	}
69	+
70	+	/**
71		* Constructor sets given fairness, and is in unlocked state
72		*/
73		public void testConstructor() {
#	Line 190 | Line 199 | public class ReentrantReadWriteLockTest
199		*/
200		public void testWriteLockInterruptibly_Interrupted() throws Exception {
201		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
202	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
202	>	lock.writeLock().lock();
203	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
204		public void realRun() throws InterruptedException {
205		lock.writeLock().lockInterruptibly();
196	–	lock.writeLock().unlock();
197	–	lock.writeLock().lockInterruptibly();
198	–	lock.writeLock().unlock();
206		}});
207
201	–	lock.writeLock().lock();
202	–	t.start();
208		Thread.sleep(SHORT_DELAY_MS);
209		t.interrupt();
205	–	Thread.sleep(SHORT_DELAY_MS);
206	–	lock.writeLock().unlock();
210		t.join();
211	+	releaseLock(lock.writeLock());
212		}
213
214		/**
#	Line 213 | Line 217 | public class ReentrantReadWriteLockTest
217		public void testWriteTryLock_Interrupted() throws InterruptedException {
218		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
219		lock.writeLock().lock();
220	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
220	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
221		public void realRun() throws InterruptedException {
222		lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS);
223		}});
224
221	–	t.start();
225		Thread.sleep(SHORT_DELAY_MS);
226		t.interrupt();
224	–	lock.writeLock().unlock();
227		t.join();
228	+	releaseLock(lock.writeLock());
229		}
230
231		/**
#	Line 231 | Line 234 | public class ReentrantReadWriteLockTest
234		public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
235		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
236		lock.writeLock().lock();
237	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
237	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
238		public void realRun() throws InterruptedException {
239		lock.readLock().lockInterruptibly();
240		}});
241
239	–	t.start();
242		Thread.sleep(SHORT_DELAY_MS);
243		t.interrupt();
242	–	Thread.sleep(SHORT_DELAY_MS);
243	–	lock.writeLock().unlock();
244		t.join();
245	+	releaseLock(lock.writeLock());
246		}
247
248		/**
#	Line 250 | Line 251 | public class ReentrantReadWriteLockTest
251		public void testReadTryLock_Interrupted() throws InterruptedException {
252		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
253		lock.writeLock().lock();
254	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
254	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
255		public void realRun() throws InterruptedException {
256		lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
257		}});
258
258	–	t.start();
259		Thread.sleep(SHORT_DELAY_MS);
260		t.interrupt();
261		t.join();
262	+	releaseLock(lock.writeLock());
263		}
264
265
#	Line 268 | Line 269 | public class ReentrantReadWriteLockTest
269		public void testWriteTryLockWhenLocked() throws InterruptedException {
270		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
271		lock.writeLock().lock();
272	<	Thread t = new Thread(new CheckedRunnable() {
272	>	Thread t = newStartedThread(new CheckedRunnable() {
273		public void realRun() {
274	<	threadAssertFalse(lock.writeLock().tryLock());
274	>	assertFalse(lock.writeLock().tryLock());
275		}});
276
276	–	t.start();
277		t.join();
278		lock.writeLock().unlock();
279		}
#	Line 284 | Line 284 | public class ReentrantReadWriteLockTest
284		public void testReadTryLockWhenLocked() throws InterruptedException {
285		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
286		lock.writeLock().lock();
287	<	Thread t = new Thread(new CheckedRunnable() {
287	>	Thread t = newStartedThread(new CheckedRunnable() {
288		public void realRun() {
289	<	threadAssertFalse(lock.readLock().tryLock());
289	>	assertFalse(lock.readLock().tryLock());
290		}});
291
292	–	t.start();
292		t.join();
293		lock.writeLock().unlock();
294		}
#	Line 300 | Line 299 | public class ReentrantReadWriteLockTest
299		public void testMultipleReadLocks() throws InterruptedException {
300		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
301		lock.readLock().lock();
302	<	Thread t = new Thread(new CheckedRunnable() {
302	>	Thread t = newStartedThread(new CheckedRunnable() {
303		public void realRun() {
304	<	threadAssertTrue(lock.readLock().tryLock());
304	>	assertTrue(lock.readLock().tryLock());
305		lock.readLock().unlock();
306		}});
307
309	–	t.start();
308		t.join();
309		lock.readLock().unlock();
310		}
#	Line 317 | Line 315 | public class ReentrantReadWriteLockTest
315		public void testWriteAfterMultipleReadLocks() throws InterruptedException {
316		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
317		lock.readLock().lock();
318	<	Thread t1 = new Thread(new CheckedRunnable() {
318	>	Thread t1 = newStartedThread(new CheckedRunnable() {
319		public void realRun() {
320		lock.readLock().lock();
321		lock.readLock().unlock();
322		}});
323	<	Thread t2 = new Thread(new CheckedRunnable() {
323	>	Thread t2 = newStartedThread(new CheckedRunnable() {
324		public void realRun() {
325		lock.writeLock().lock();
326		lock.writeLock().unlock();
327		}});
328
331	–	t1.start();
332	–	t2.start();
329		Thread.sleep(SHORT_DELAY_MS);
330		lock.readLock().unlock();
331		t1.join(MEDIUM_DELAY_MS);
#	Line 344 | Line 340 | public class ReentrantReadWriteLockTest
340		public void testReadAfterWriteLock() throws InterruptedException {
341		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
342		lock.writeLock().lock();
343	<	Thread t1 = new Thread(new CheckedRunnable() {
343	>	Thread t1 = newStartedThread(new CheckedRunnable() {
344		public void realRun() {
345		lock.readLock().lock();
346		lock.readLock().unlock();
347		}});
348	<	Thread t2 = new Thread(new CheckedRunnable() {
348	>	Thread t2 = newStartedThread(new CheckedRunnable() {
349		public void realRun() {
350		lock.readLock().lock();
351		lock.readLock().unlock();
352		}});
353
358	–	t1.start();
359	–	t2.start();
354		Thread.sleep(SHORT_DELAY_MS);
355		lock.writeLock().unlock();
356		t1.join(MEDIUM_DELAY_MS);
#	Line 383 | Line 377 | public class ReentrantReadWriteLockTest
377		public void testReadHoldingWriteLock2() throws InterruptedException {
378		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
379		lock.writeLock().lock();
380	<	Thread t1 = new Thread(new CheckedRunnable() {
380	>	Thread t1 = newStartedThread(new CheckedRunnable() {
381		public void realRun() {
382		lock.readLock().lock();
383		lock.readLock().unlock();
384		}});
385	<	Thread t2 = new Thread(new CheckedRunnable() {
385	>	Thread t2 = newStartedThread(new CheckedRunnable() {
386		public void realRun() {
387		lock.readLock().lock();
388		lock.readLock().unlock();
389		}});
390
397	–	t1.start();
398	–	t2.start();
391		lock.readLock().lock();
392		lock.readLock().unlock();
393		Thread.sleep(SHORT_DELAY_MS);
#	Line 409 | Line 401 | public class ReentrantReadWriteLockTest
401		}
402
403		/**
404	<	*  Read lock succeeds if write locked by current thread even if
404	>	* Read lock succeeds if write locked by current thread even if
405		* other threads are waiting for writelock
406		*/
407		public void testReadHoldingWriteLock3() throws InterruptedException {
408		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
409		lock.writeLock().lock();
410	<	Thread t1 = new Thread(new CheckedRunnable() {
410	>	Thread t1 = newStartedThread(new CheckedRunnable() {
411		public void realRun() {
412		lock.writeLock().lock();
413		lock.writeLock().unlock();
414		}});
415	<	Thread t2 = new Thread(new CheckedRunnable() {
415	>	Thread t2 = newStartedThread(new CheckedRunnable() {
416		public void realRun() {
417		lock.writeLock().lock();
418		lock.writeLock().unlock();
419		}});
420
429	–	t1.start();
430	–	t2.start();
421		lock.readLock().lock();
422		lock.readLock().unlock();
423		Thread.sleep(SHORT_DELAY_MS);
#	Line 442 | Line 432 | public class ReentrantReadWriteLockTest
432
433
434		/**
435	<	*  Write lock succeeds if write locked by current thread even if
435	>	* Write lock succeeds if write locked by current thread even if
436		* other threads are waiting for writelock
437		*/
438		public void testWriteHoldingWriteLock4() throws InterruptedException {
439		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
440		lock.writeLock().lock();
441	<	Thread t1 = new Thread(new CheckedRunnable() {
441	>	Thread t1 = newStartedThread(new CheckedRunnable() {
442		public void realRun() {
443		lock.writeLock().lock();
444		lock.writeLock().unlock();
445		}});
446	<	Thread t2 = new Thread(new CheckedRunnable() {
446	>	Thread t2 = newStartedThread(new CheckedRunnable() {
447		public void realRun() {
448		lock.writeLock().lock();
449		lock.writeLock().unlock();
450		}});
451
462	–	t1.start();
463	–	t2.start();
452		lock.writeLock().lock();
453		lock.writeLock().unlock();
454		Thread.sleep(SHORT_DELAY_MS);
#	Line 492 | Line 480 | public class ReentrantReadWriteLockTest
480		public void testReadHoldingWriteLockFair2() throws InterruptedException {
481		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
482		lock.writeLock().lock();
483	<	Thread t1 = new Thread(new CheckedRunnable() {
483	>	Thread t1 = newStartedThread(new CheckedRunnable() {
484		public void realRun() {
485		lock.readLock().lock();
486		lock.readLock().unlock();
487		}});
488	<	Thread t2 = new Thread(new CheckedRunnable() {
488	>	Thread t2 = newStartedThread(new CheckedRunnable() {
489		public void realRun() {
490		lock.readLock().lock();
491		lock.readLock().unlock();
492		}});
493
506	–	t1.start();
507	–	t2.start();
494		lock.readLock().lock();
495		lock.readLock().unlock();
496		Thread.sleep(SHORT_DELAY_MS);
#	Line 525 | Line 511 | public class ReentrantReadWriteLockTest
511		public void testReadHoldingWriteLockFair3() throws InterruptedException {
512		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
513		lock.writeLock().lock();
514	<	Thread t1 = new Thread(new CheckedRunnable() {
514	>	Thread t1 = newStartedThread(new CheckedRunnable() {
515		public void realRun() {
516		lock.writeLock().lock();
517		lock.writeLock().unlock();
518		}});
519	<	Thread t2 = new Thread(new CheckedRunnable() {
519	>	Thread t2 = newStartedThread(new CheckedRunnable() {
520		public void realRun() {
521		lock.writeLock().lock();
522		lock.writeLock().unlock();
523		}});
524
539	–	t1.start();
540	–	t2.start();
525		lock.readLock().lock();
526		lock.readLock().unlock();
527		Thread.sleep(SHORT_DELAY_MS);
#	Line 558 | Line 542 | public class ReentrantReadWriteLockTest
542		public void testWriteHoldingWriteLockFair4() throws InterruptedException {
543		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
544		lock.writeLock().lock();
545	<	Thread t1 = new Thread(new CheckedRunnable() {
545	>	Thread t1 = newStartedThread(new CheckedRunnable() {
546		public void realRun() {
547		lock.writeLock().lock();
548		lock.writeLock().unlock();
549		}});
550	<	Thread t2 = new Thread(new CheckedRunnable() {
550	>	Thread t2 = newStartedThread(new CheckedRunnable() {
551		public void realRun() {
552		lock.writeLock().lock();
553		lock.writeLock().unlock();
554		}});
555
572	–	t1.start();
573	–	t2.start();
556		Thread.sleep(SHORT_DELAY_MS);
557		assertTrue(lock.isWriteLockedByCurrentThread());
558	<	assertTrue(lock.getWriteHoldCount() == 1);
558	>	assertEquals(1, lock.getWriteHoldCount());
559		lock.writeLock().lock();
560	<	assertTrue(lock.getWriteHoldCount() == 2);
560	>	assertEquals(2, lock.getWriteHoldCount());
561		lock.writeLock().unlock();
562		lock.writeLock().lock();
563		lock.writeLock().unlock();
#	Line 593 | Line 575 | public class ReentrantReadWriteLockTest
575		public void testTryLockWhenReadLocked() throws InterruptedException {
576		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
577		lock.readLock().lock();
578	<	Thread t = new Thread(new CheckedRunnable() {
578	>	Thread t = newStartedThread(new CheckedRunnable() {
579		public void realRun() {
580	<	threadAssertTrue(lock.readLock().tryLock());
580	>	assertTrue(lock.readLock().tryLock());
581		lock.readLock().unlock();
582		}});
583
602	–	t.start();
584		t.join();
585		lock.readLock().unlock();
586		}
587
607	–
608	–
588		/**
589		* write tryLock fails when readlocked
590		*/
591		public void testWriteTryLockWhenReadLocked() throws InterruptedException {
592		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
593		lock.readLock().lock();
594	<	Thread t = new Thread(new CheckedRunnable() {
594	>	Thread t = newStartedThread(new CheckedRunnable() {
595		public void realRun() {
596	<	threadAssertFalse(lock.writeLock().tryLock());
596	>	assertFalse(lock.writeLock().tryLock());
597		}});
598
620	–	t.start();
599		t.join();
600		lock.readLock().unlock();
601		}
#	Line 629 | Line 607 | public class ReentrantReadWriteLockTest
607		public void testTryLockWhenReadLockedFair() throws InterruptedException {
608		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
609		lock.readLock().lock();
610	<	Thread t = new Thread(new CheckedRunnable() {
610	>	Thread t = newStartedThread(new CheckedRunnable() {
611		public void realRun() {
612	<	threadAssertTrue(lock.readLock().tryLock());
612	>	assertTrue(lock.readLock().tryLock());
613		lock.readLock().unlock();
614		}});
615
638	–	t.start();
616		t.join();
617		lock.readLock().unlock();
618		}
#	Line 648 | Line 625 | public class ReentrantReadWriteLockTest
625		public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
626		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
627		lock.readLock().lock();
628	<	Thread t = new Thread(new CheckedRunnable() {
628	>	Thread t = newStartedThread(new CheckedRunnable() {
629		public void realRun() {
630	<	threadAssertFalse(lock.writeLock().tryLock());
630	>	assertFalse(lock.writeLock().tryLock());
631		}});
632
656	–	t.start();
633		t.join();
634		lock.readLock().unlock();
635		}
#	Line 666 | Line 642 | public class ReentrantReadWriteLockTest
642		public void testWriteTryLock_Timeout() throws InterruptedException {
643		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
644		lock.writeLock().lock();
645	<	Thread t = new Thread(new CheckedRunnable() {
645	>	Thread t = newStartedThread(new CheckedRunnable() {
646		public void realRun() throws InterruptedException {
647	<	threadAssertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
647	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
648		}});
649
674	–	t.start();
650		t.join();
651		assertTrue(lock.writeLock().isHeldByCurrentThread());
652		lock.writeLock().unlock();
#	Line 683 | Line 658 | public class ReentrantReadWriteLockTest
658		public void testReadTryLock_Timeout() throws InterruptedException {
659		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
660		lock.writeLock().lock();
661	<	Thread t = new Thread(new CheckedRunnable() {
661	>	Thread t = newStartedThread(new CheckedRunnable() {
662		public void realRun() throws InterruptedException {
663	<	threadAssertFalse(lock.readLock().tryLock(1, MILLISECONDS));
663	>	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
664		}});
665
691	–	t.start();
666		t.join();
667		assertTrue(lock.writeLock().isHeldByCurrentThread());
668		lock.writeLock().unlock();
#	Line 701 | Line 675 | public class ReentrantReadWriteLockTest
675		public void testWriteLockInterruptibly() throws InterruptedException {
676		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
677		lock.writeLock().lockInterruptibly();
678	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
678	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
679		public void realRun() throws InterruptedException {
680		lock.writeLock().lockInterruptibly();
681		}});
682
709	–	t.start();
683		Thread.sleep(SHORT_DELAY_MS);
684		t.interrupt();
712	–	Thread.sleep(SHORT_DELAY_MS);
685		t.join();
686	<	lock.writeLock().unlock();
686	>	releaseLock(lock.writeLock());
687		}
688
689		/**
690	<	*  read lockInterruptibly succeeds if lock free else is interruptible
690	>	* read lockInterruptibly succeeds if lock free else is interruptible
691		*/
692		public void testReadLockInterruptibly() throws InterruptedException {
693		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
694		lock.writeLock().lockInterruptibly();
695	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
695	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
696		public void realRun() throws InterruptedException {
697		lock.readLock().lockInterruptibly();
698		}});
699
728	–	t.start();
700		Thread.sleep(SHORT_DELAY_MS);
701		t.interrupt();
702		t.join();
703	<	lock.writeLock().unlock();
703	>	releaseLock(lock.writeLock());
704		}
705
706		/**
#	Line 771 | Line 742 | public class ReentrantReadWriteLockTest
742
743
744		/**
745	<	*  timed await without a signal times out
745	>	* timed await without a signal times out
746		*/
747		public void testAwait_Timeout() throws InterruptedException {
748		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
#	Line 799 | Line 770 | public class ReentrantReadWriteLockTest
770		public void testAwait() throws InterruptedException {
771		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
772		final Condition c = lock.writeLock().newCondition();
773	<	Thread t = new Thread(new CheckedRunnable() {
773	>	Thread t = newStartedThread(new CheckedRunnable() {
774		public void realRun() throws InterruptedException {
775		lock.writeLock().lock();
776		c.await();
777		lock.writeLock().unlock();
778		}});
779
809	–	t.start();
780		Thread.sleep(SHORT_DELAY_MS);
781		lock.writeLock().lock();
782		c.signal();
#	Line 876 | Line 846 | public class ReentrantReadWriteLockTest
846		public void testAwait_Interrupt() throws InterruptedException {
847		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
848		final Condition c = lock.writeLock().newCondition();
849	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
849	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
850		public void realRun() throws InterruptedException {
851		lock.writeLock().lock();
852		c.await();
853		lock.writeLock().unlock();
854		}});
855
886	–	t.start();
856		Thread.sleep(SHORT_DELAY_MS);
857		t.interrupt();
858		t.join(SHORT_DELAY_MS);
#	Line 896 | Line 865 | public class ReentrantReadWriteLockTest
865		public void testAwaitNanos_Interrupt() throws InterruptedException {
866		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
867		final Condition c = lock.writeLock().newCondition();
868	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
868	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
869		public void realRun() throws InterruptedException {
870		lock.writeLock().lock();
871		c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
872		lock.writeLock().unlock();
873		}});
874
906	–	t.start();
875		Thread.sleep(SHORT_DELAY_MS);
876		t.interrupt();
877		t.join(SHORT_DELAY_MS);
#	Line 916 | Line 884 | public class ReentrantReadWriteLockTest
884		public void testAwaitUntil_Interrupt() throws InterruptedException {
885		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
886		final Condition c = lock.writeLock().newCondition();
887	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
887	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
888		public void realRun() throws InterruptedException {
889		lock.writeLock().lock();
890		java.util.Date d = new java.util.Date();
#	Line 924 | Line 892 | public class ReentrantReadWriteLockTest
892		lock.writeLock().unlock();
893		}});
894
927	–	t.start();
895		Thread.sleep(SHORT_DELAY_MS);
896		t.interrupt();
897		t.join(SHORT_DELAY_MS);
#	Line 937 | Line 904 | public class ReentrantReadWriteLockTest
904		public void testSignalAll() throws InterruptedException {
905		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
906		final Condition c = lock.writeLock().newCondition();
907	<	Thread t1 = new Thread(new CheckedRunnable() {
907	>	Thread t1 = newStartedThread(new CheckedRunnable() {
908		public void realRun() throws InterruptedException {
909		lock.writeLock().lock();
910		c.await();
911		lock.writeLock().unlock();
912		}});
913
914	<	Thread t2 = new Thread(new CheckedRunnable() {
914	>	Thread t2 = newStartedThread(new CheckedRunnable() {
915		public void realRun() throws InterruptedException {
916		lock.writeLock().lock();
917		c.await();
918		lock.writeLock().unlock();
919		}});
920
954	–	t1.start();
955	–	t2.start();
921		Thread.sleep(SHORT_DELAY_MS);
922		lock.writeLock().lock();
923		c.signalAll();
#	Line 1221 | Line 1186 | public class ReentrantReadWriteLockTest
1186		public void testHasWaiters() throws InterruptedException {
1187		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1188		final Condition c = lock.writeLock().newCondition();
1189	<	Thread t = new Thread(new CheckedRunnable() {
1189	>	Thread t = newStartedThread(new CheckedRunnable() {
1190		public void realRun() throws InterruptedException {
1191		lock.writeLock().lock();
1192	<	threadAssertFalse(lock.hasWaiters(c));
1193	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1192	>	assertFalse(lock.hasWaiters(c));
1193	>	assertEquals(0, lock.getWaitQueueLength(c));
1194		c.await();
1195		lock.writeLock().unlock();
1196		}});
1197
1233	–	t.start();
1198		Thread.sleep(SHORT_DELAY_MS);
1199		lock.writeLock().lock();
1200		assertTrue(lock.hasWaiters(c));
#	Line 1252 | Line 1216 | public class ReentrantReadWriteLockTest
1216		public void testGetWaitQueueLength() throws InterruptedException {
1217		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1218		final Condition c = lock.writeLock().newCondition();
1219	<	Thread t = new Thread(new CheckedRunnable() {
1219	>	Thread t = newStartedThread(new CheckedRunnable() {
1220		public void realRun() throws InterruptedException {
1221		lock.writeLock().lock();
1222	<	threadAssertFalse(lock.hasWaiters(c));
1223	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1222	>	assertFalse(lock.hasWaiters(c));
1223	>	assertEquals(0, lock.getWaitQueueLength(c));
1224		c.await();
1225		lock.writeLock().unlock();
1226		}});
1227
1264	–	t.start();
1228		Thread.sleep(SHORT_DELAY_MS);
1229		lock.writeLock().lock();
1230		assertTrue(lock.hasWaiters(c));
#	Line 1287 | Line 1250 | public class ReentrantReadWriteLockTest
1250		Thread t1 = new Thread(new CheckedRunnable() {
1251		public void realRun() throws InterruptedException {
1252		lock.writeLock().lock();
1253	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1253	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1254		c.await();
1255		lock.writeLock().unlock();
1256		}});
#	Line 1295 | Line 1258 | public class ReentrantReadWriteLockTest
1258		Thread t2 = new Thread(new CheckedRunnable() {
1259		public void realRun() throws InterruptedException {
1260		lock.writeLock().lock();
1261	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1261	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1262		c.await();
1263		lock.writeLock().unlock();
1264		}});

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