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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:55 2003 UTC vs.
Revision 1.13 by dl, Sun Dec 28 21:56:18 2003 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import java.util.*;
13	+	import java.io.*;
14
15	<	public class ReentrantLockTest extends TestCase {
13	<	static int HOLD_COUNT_TEST_LIMIT = 20;
14	<
15	>	public class ReentrantLockTest extends JSR166TestCase {
16		public static void main(String[] args) {
17		junit.textui.TestRunner.run (suite());
18		}
18	–
19		public static Test suite() {
20		return new TestSuite(ReentrantLockTest.class);
21		}
22
23	<	private static long SHORT_DELAY_MS = 100;
24	<	private static long MEDIUM_DELAY_MS = 1000;
25	<	private static long LONG_DELAY_MS = 10000;
26	<
27	<	/*
28	<	* Unlocks an unlocked lock, throws Illegal Monitor State
29	<	*
23	>	/**
24	>	* A runnable calling lockInterruptibly
25		*/
26	<
27	<	public void testIllegalMonitorStateException(){
26	>	class InterruptibleLockRunnable implements Runnable {
27	>	final ReentrantLock lock;
28	>	InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
29	>	public void run() {
30	>	try {
31	>	lock.lockInterruptibly();
32	>	} catch(InterruptedException success){}
33	>	}
34	>	}
35	>
36	>
37	>	/**
38	>	* A runnable calling lockInterruptibly that expects to be
39	>	* interrupted
40	>	*/
41	>	class InterruptedLockRunnable implements Runnable {
42	>	final ReentrantLock lock;
43	>	InterruptedLockRunnable(ReentrantLock l) { lock = l; }
44	>	public void run() {
45	>	try {
46	>	lock.lockInterruptibly();
47	>	threadShouldThrow();
48	>	} catch(InterruptedException success){}
49	>	}
50	>	}
51	>
52	>	/**
53	>	* Subclass to expose protected methods
54	>	*/
55	>	static class PublicReentrantLock extends ReentrantLock {
56	>	PublicReentrantLock() { super(); }
57	>	public Collection<Thread> getQueuedThreads() {
58	>	return super.getQueuedThreads();
59	>	}
60	>	public Collection<Thread> getWaitingThreads(Condition c) {
61	>	return super.getWaitingThreads(c);
62	>	}
63	>
64	>
65	>	}
66	>
67	>	/**
68	>	* Constructor sets given fairness
69	>	*/
70	>	public void testConstructor() {
71		ReentrantLock rl = new ReentrantLock();
72	<	try{
73	<	rl.unlock();
74	<	fail("Should of thown Illegal Monitor State Exception");
72	>	assertFalse(rl.isFair());
73	>	ReentrantLock r2 = new ReentrantLock(true);
74	>	assertTrue(r2.isFair());
75	>	}
76
77	<	}catch(IllegalMonitorStateException sucess){}
77	>	/**
78	>	* locking an unlocked lock succeeds
79	>	*/
80	>	public void testLock() {
81	>	ReentrantLock rl = new ReentrantLock();
82	>	rl.lock();
83	>	assertTrue(rl.isLocked());
84	>	rl.unlock();
85	>	}
86	>
87	>	/**
88	>	* locking an unlocked fair lock succeeds
89	>	*/
90	>	public void testFairLock() {
91	>	ReentrantLock rl = new ReentrantLock(true);
92	>	rl.lock();
93	>	assertTrue(rl.isLocked());
94	>	rl.unlock();
95	>	}
96
97	+	/**
98	+	* Unlocking an unlocked lock throws IllegalMonitorStateException
99	+	*/
100	+	public void testUnlock_IllegalMonitorStateException() {
101	+	ReentrantLock rl = new ReentrantLock();
102	+	try {
103	+	rl.unlock();
104	+	shouldThrow();
105
106	+	} catch(IllegalMonitorStateException success){}
107		}
108	<
109	<	/*
110	<	* makes a lock, locks it, tries to aquire the lock in another thread
111	<	* interrupts that thread and waits for an interrupted Exception to
112	<	* be thrown.
108	>
109	>	/**
110	>	* trylock on an unlocked lock succeeds
111	>	*/
112	>	public void testTryLock() {
113	>	ReentrantLock rl = new ReentrantLock();
114	>	assertTrue(rl.tryLock());
115	>	assertTrue(rl.isLocked());
116	>	rl.unlock();
117	>	}
118	>
119	>
120	>	/**
121	>	* hasQueuedThreads reports whether there are waiting threads
122	>	*/
123	>	public void testhasQueuedThreads() {
124	>	final ReentrantLock lock = new ReentrantLock();
125	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
126	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
127	>	try {
128	>	assertFalse(lock.hasQueuedThreads());
129	>	lock.lock();
130	>	t1.start();
131	>	Thread.sleep(SHORT_DELAY_MS);
132	>	assertTrue(lock.hasQueuedThreads());
133	>	t2.start();
134	>	Thread.sleep(SHORT_DELAY_MS);
135	>	assertTrue(lock.hasQueuedThreads());
136	>	t1.interrupt();
137	>	Thread.sleep(SHORT_DELAY_MS);
138	>	assertTrue(lock.hasQueuedThreads());
139	>	lock.unlock();
140	>	Thread.sleep(SHORT_DELAY_MS);
141	>	assertFalse(lock.hasQueuedThreads());
142	>	t1.join();
143	>	t2.join();
144	>	} catch(Exception e){
145	>	unexpectedException();
146	>	}
147	>	}
148	>
149	>	/**
150	>	* getQueueLength reports number of waiting threads
151		*/
152	+	public void testGetQueueLength() {
153	+	final ReentrantLock lock = new ReentrantLock();
154	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
155	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
156	+	try {
157	+	assertEquals(0, lock.getQueueLength());
158	+	lock.lock();
159	+	t1.start();
160	+	Thread.sleep(SHORT_DELAY_MS);
161	+	assertEquals(1, lock.getQueueLength());
162	+	t2.start();
163	+	Thread.sleep(SHORT_DELAY_MS);
164	+	assertEquals(2, lock.getQueueLength());
165	+	t1.interrupt();
166	+	Thread.sleep(SHORT_DELAY_MS);
167	+	assertEquals(1, lock.getQueueLength());
168	+	lock.unlock();
169	+	Thread.sleep(SHORT_DELAY_MS);
170	+	assertEquals(0, lock.getQueueLength());
171	+	t1.join();
172	+	t2.join();
173	+	} catch(Exception e){
174	+	unexpectedException();
175	+	}
176	+	}
177
178	<	public void testInterruptedException(){
178	>	/**
179	>	* getQueuedThreads includes waiting threads
180	>	*/
181	>	public void testGetQueuedThreads() {
182	>	final PublicReentrantLock lock = new PublicReentrantLock();
183	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
184	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
185	>	try {
186	>	assertTrue(lock.getQueuedThreads().isEmpty());
187	>	lock.lock();
188	>	assertTrue(lock.getQueuedThreads().isEmpty());
189	>	t1.start();
190	>	Thread.sleep(SHORT_DELAY_MS);
191	>	assertTrue(lock.getQueuedThreads().contains(t1));
192	>	t2.start();
193	>	Thread.sleep(SHORT_DELAY_MS);
194	>	assertTrue(lock.getQueuedThreads().contains(t1));
195	>	assertTrue(lock.getQueuedThreads().contains(t2));
196	>	t1.interrupt();
197	>	Thread.sleep(SHORT_DELAY_MS);
198	>	assertFalse(lock.getQueuedThreads().contains(t1));
199	>	assertTrue(lock.getQueuedThreads().contains(t2));
200	>	lock.unlock();
201	>	Thread.sleep(SHORT_DELAY_MS);
202	>	assertTrue(lock.getQueuedThreads().isEmpty());
203	>	t1.join();
204	>	t2.join();
205	>	} catch(Exception e){
206	>	unexpectedException();
207	>	}
208	>	}
209	>
210	>
211	>	/**
212	>	* timed trylock is interruptible.
213	>	*/
214	>	public void testInterruptedException2() {
215		final ReentrantLock lock = new ReentrantLock();
216		lock.lock();
217		Thread t = new Thread(new Runnable() {
218	<	public void run(){
219	<	try{
220	<	lock.lockInterruptibly();
221	<	fail("should throw");
222	<	}catch(InterruptedException sucess){}
218	>	public void run() {
219	>	try {
220	>	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
221	>	threadShouldThrow();
222	>	} catch(InterruptedException success){}
223		}
224		});
225	<	t.start();
226	<	t.interrupt();
227	<	lock.unlock();
228	<	}
225	>	try {
226	>	t.start();
227	>	t.interrupt();
228	>	} catch(Exception e){
229	>	unexpectedException();
230	>	}
231	>	}
232
65	–	/*
66	–	* tests for interrupted exception on a timed wait
67	–	*
68	–	*/
69	–
233
234	<	public void testInterruptedException2(){
234	>	/**
235	>	* Trylock on a locked lock fails
236	>	*/
237	>	public void testTryLockWhenLocked() {
238		final ReentrantLock lock = new ReentrantLock();
239		lock.lock();
240		Thread t = new Thread(new Runnable() {
241	<	public void run(){
242	<	try{
77	<	lock.tryLock(1000,TimeUnit.MILLISECONDS);
78	<	fail("should throw");
79	<	}catch(InterruptedException sucess){}
241	>	public void run() {
242	>	threadAssertFalse(lock.tryLock());
243		}
244		});
245	<	t.start();
246	<	t.interrupt();
247	<	}
245	>	try {
246	>	t.start();
247	>	t.join();
248	>	lock.unlock();
249	>	} catch(Exception e){
250	>	unexpectedException();
251	>	}
252	>	}
253
254	+	/**
255	+	* Timed trylock on a locked lock times out
256	+	*/
257	+	public void testTryLock_Timeout() {
258	+	final ReentrantLock lock = new ReentrantLock();
259	+	lock.lock();
260	+	Thread t = new Thread(new Runnable() {
261	+	public void run() {
262	+	try {
263	+	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
264	+	} catch (Exception ex) {
265	+	threadUnexpectedException();
266	+	}
267	+	}
268	+	});
269	+	try {
270	+	t.start();
271	+	t.join();
272	+	lock.unlock();
273	+	} catch(Exception e){
274	+	unexpectedException();
275	+	}
276	+	}
277
278	+	/**
279	+	* getHoldCount returns number of recursive holds
280	+	*/
281		public void testGetHoldCount() {
282		ReentrantLock lock = new ReentrantLock();
283	<	for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) {
283	>	for(int i = 1; i <= SIZE; i++) {
284		lock.lock();
285		assertEquals(i,lock.getHoldCount());
286		}
287	<	for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) {
287	>	for(int i = SIZE; i > 0; i--) {
288		lock.unlock();
289		assertEquals(i-1,lock.getHoldCount());
290		}
291		}
292
293
294	<
295	<
294	>	/**
295	>	* isLocked is true when locked and false when not
296	>	*/
297		public void testIsLocked() {
298		final ReentrantLock lock = new ReentrantLock();
299		lock.lock();
#	Line 109 | Line 304 | public class ReentrantLockTest extends T
304		public void run() {
305		lock.lock();
306		try {
307	<	Thread.sleep(SHORT_DELAY_MS * 2);
307	>	Thread.sleep(SMALL_DELAY_MS);
308		}
309	<	catch(Exception e) {}
309	>	catch(Exception e) {
310	>	threadUnexpectedException();
311	>	}
312		lock.unlock();
313		}
314		});
315	<	try{
315	>	try {
316		t.start();
317		Thread.sleep(SHORT_DELAY_MS);
318		assertTrue(lock.isLocked());
319		t.join();
320		assertFalse(lock.isLocked());
321		} catch(Exception e){
322	<	fail("unexpected exception");
322	>	unexpectedException();
323	>	}
324	>	}
325	>
326	>
327	>	/**
328	>	* lockInterruptibly is interruptible.
329	>	*/
330	>	public void testLockInterruptibly1() {
331	>	final ReentrantLock lock = new ReentrantLock();
332	>	lock.lock();
333	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
334	>	try {
335	>	t.start();
336	>	t.interrupt();
337	>	lock.unlock();
338	>	t.join();
339	>	} catch(Exception e){
340	>	unexpectedException();
341	>	}
342	>	}
343	>
344	>	/**
345	>	* lockInterruptibly succeeds when unlocked, else is interruptible
346	>	*/
347	>	public void testLockInterruptibly2() {
348	>	final ReentrantLock lock = new ReentrantLock();
349	>	try {
350	>	lock.lockInterruptibly();
351	>	} catch(Exception e) {
352	>	unexpectedException();
353	>	}
354	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
355	>	try {
356	>	t.start();
357	>	t.interrupt();
358	>	assertTrue(lock.isLocked());
359	>	assertTrue(lock.isHeldByCurrentThread());
360	>	t.join();
361	>	} catch(Exception e){
362	>	unexpectedException();
363	>	}
364	>	}
365	>
366	>	/**
367	>	* Calling await without holding lock throws IllegalMonitorStateException
368	>	*/
369	>	public void testAwait_IllegalMonitor() {
370	>	final ReentrantLock lock = new ReentrantLock();
371	>	final Condition c = lock.newCondition();
372	>	try {
373	>	c.await();
374	>	shouldThrow();
375	>	}
376	>	catch (IllegalMonitorStateException success) {
377		}
378	+	catch (Exception ex) {
379	+	unexpectedException();
380	+	}
381	+	}
382
383	+	/**
384	+	* Calling signal without holding lock throws IllegalMonitorStateException
385	+	*/
386	+	public void testSignal_IllegalMonitor() {
387	+	final ReentrantLock lock = new ReentrantLock();
388	+	final Condition c = lock.newCondition();
389	+	try {
390	+	c.signal();
391	+	shouldThrow();
392	+	}
393	+	catch (IllegalMonitorStateException success) {
394	+	}
395	+	catch (Exception ex) {
396	+	unexpectedException();
397	+	}
398		}
399
400	<	/*
401	<	* current thread locks interruptibly the thread
132	<	* another thread tries to aquire the lock and blocks
133	<	* on the call. interrupt the attempted aquireLock
134	<	* assert that the first lock() call actually locked the lock
135	<	* assert that the current thread is the one holding the lock
400	>	/**
401	>	* awaitNanos without a signal times out
402		*/
403	+	public void testAwaitNanos_Timeout() {
404	+	final ReentrantLock lock = new ReentrantLock();
405	+	final Condition c = lock.newCondition();
406	+	try {
407	+	lock.lock();
408	+	long t = c.awaitNanos(100);
409	+	assertTrue(t <= 0);
410	+	lock.unlock();
411	+	}
412	+	catch (Exception ex) {
413	+	unexpectedException();
414	+	}
415	+	}
416
417	<	public void testLockedInterruptibly() {
417	>	/**
418	>	*  timed await without a signal times out
419	>	*/
420	>	public void testAwait_Timeout() {
421	>	final ReentrantLock lock = new ReentrantLock();
422	>	final Condition c = lock.newCondition();
423	>	try {
424	>	lock.lock();
425	>	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
426	>	lock.unlock();
427	>	}
428	>	catch (Exception ex) {
429	>	unexpectedException();
430	>	}
431	>	}
432	>
433	>	/**
434	>	* awaitUntil without a signal times out
435	>	*/
436	>	public void testAwaitUntil_Timeout() {
437		final ReentrantLock lock = new ReentrantLock();
438	<	try {lock.lockInterruptibly();} catch(Exception e) {}
438	>	final Condition c = lock.newCondition();
439	>	try {
440	>	lock.lock();
441	>	java.util.Date d = new java.util.Date();
442	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
443	>	lock.unlock();
444	>	}
445	>	catch (Exception ex) {
446	>	unexpectedException();
447	>	}
448	>	}
449	>
450	>	/**
451	>	* await returns when signalled
452	>	*/
453	>	public void testAwait() {
454	>	final ReentrantLock lock = new ReentrantLock();
455	>	final Condition c = lock.newCondition();
456		Thread t = new Thread(new Runnable() {
457		public void run() {
458		try {
459	<	lock.lockInterruptibly();
460	<	fail("Failed to generate an Interrupted Exception");
459	>	lock.lock();
460	>	c.await();
461	>	lock.unlock();
462		}
463	<	catch(InterruptedException e) {}
463	>	catch(InterruptedException e) {
464	>	threadUnexpectedException();
465	>	}
466		}
467		});
468	<	t.start();
469	<	t.interrupt();
470	<	assertTrue(lock.isLocked());
471	<	assertTrue(lock.isHeldByCurrentThread());
468	>
469	>	try {
470	>	t.start();
471	>	Thread.sleep(SHORT_DELAY_MS);
472	>	lock.lock();
473	>	c.signal();
474	>	lock.unlock();
475	>	t.join(SHORT_DELAY_MS);
476	>	assertFalse(t.isAlive());
477	>	}
478	>	catch (Exception ex) {
479	>	unexpectedException();
480	>	}
481	>	}
482	>
483	>	/**
484	>	* hasWaiters throws IAE if not owned
485	>	*/
486	>	public void testHasWaitersIAE() {
487	>	final ReentrantLock lock = new ReentrantLock();
488	>	final Condition c = (lock.newCondition());
489	>	final ReentrantLock lock2 = new ReentrantLock();
490	>	try {
491	>	lock2.hasWaiters(c);
492	>	shouldThrow();
493	>	} catch (IllegalArgumentException success) {
494	>	} catch (Exception ex) {
495	>	unexpectedException();
496	>	}
497	>	}
498	>
499	>	/**
500	>	* hasWaiters throws IMSE if not locked
501	>	*/
502	>	public void testHasWaitersIMSE() {
503	>	final ReentrantLock lock = new ReentrantLock();
504	>	final Condition c = (lock.newCondition());
505	>	try {
506	>	lock.hasWaiters(c);
507	>	shouldThrow();
508	>	} catch (IllegalMonitorStateException success) {
509	>	} catch (Exception ex) {
510	>	unexpectedException();
511	>	}
512	>	}
513	>
514	>
515	>	/**
516	>	* getWaitQueueLength throws IAE if not owned
517	>	*/
518	>	public void testGetWaitQueueLengthIAE() {
519	>	final ReentrantLock lock = new ReentrantLock();
520	>	final Condition c = (lock.newCondition());
521	>	final ReentrantLock lock2 = new ReentrantLock();
522	>	try {
523	>	lock2.getWaitQueueLength(c);
524	>	shouldThrow();
525	>	} catch (IllegalArgumentException success) {
526	>	} catch (Exception ex) {
527	>	unexpectedException();
528	>	}
529	>	}
530	>
531	>	/**
532	>	* getWaitQueueLength throws IMSE if not locked
533	>	*/
534	>	public void testGetWaitQueueLengthIMSE() {
535	>	final ReentrantLock lock = new ReentrantLock();
536	>	final Condition c = (lock.newCondition());
537	>	try {
538	>	lock.getWaitQueueLength(c);
539	>	shouldThrow();
540	>	} catch (IllegalMonitorStateException success) {
541	>	} catch (Exception ex) {
542	>	unexpectedException();
543	>	}
544	>	}
545	>
546	>
547	>	/**
548	>	* getWaitingThreads throws IAE if not owned
549	>	*/
550	>	public void testGetWaitingThreadsIAE() {
551	>	final PublicReentrantLock lock = new PublicReentrantLock();
552	>	final Condition c = (lock.newCondition());
553	>	final PublicReentrantLock lock2 = new PublicReentrantLock();
554	>	try {
555	>	lock2.getWaitingThreads(c);
556	>	shouldThrow();
557	>	} catch (IllegalArgumentException success) {
558	>	} catch (Exception ex) {
559	>	unexpectedException();
560	>	}
561	>	}
562	>
563	>	/**
564	>	* getWaitingThreads throws IMSE if not locked
565	>	*/
566	>	public void testGetWaitingThreadsIMSE() {
567	>	final PublicReentrantLock lock = new PublicReentrantLock();
568	>	final Condition c = (lock.newCondition());
569	>	try {
570	>	lock.getWaitingThreads(c);
571	>	shouldThrow();
572	>	} catch (IllegalMonitorStateException success) {
573	>	} catch (Exception ex) {
574	>	unexpectedException();
575	>	}
576	>	}
577	>
578	>
579	>
580	>	/**
581	>	* hasWaiters returns true when a thread is waiting, else false
582	>	*/
583	>	public void testHasWaiters() {
584	>	final ReentrantLock lock = new ReentrantLock();
585	>	final Condition c = lock.newCondition();
586	>	Thread t = new Thread(new Runnable() {
587	>	public void run() {
588	>	try {
589	>	lock.lock();
590	>	threadAssertFalse(lock.hasWaiters(c));
591	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
592	>	c.await();
593	>	lock.unlock();
594	>	}
595	>	catch(InterruptedException e) {
596	>	threadUnexpectedException();
597	>	}
598	>	}
599	>	});
600	>
601	>	try {
602	>	t.start();
603	>	Thread.sleep(SHORT_DELAY_MS);
604	>	lock.lock();
605	>	assertTrue(lock.hasWaiters(c));
606	>	assertEquals(1, lock.getWaitQueueLength(c));
607	>	c.signal();
608	>	lock.unlock();
609	>	Thread.sleep(SHORT_DELAY_MS);
610	>	lock.lock();
611	>	assertFalse(lock.hasWaiters(c));
612	>	assertEquals(0, lock.getWaitQueueLength(c));
613	>	lock.unlock();
614	>	t.join(SHORT_DELAY_MS);
615	>	assertFalse(t.isAlive());
616	>	}
617	>	catch (Exception ex) {
618	>	unexpectedException();
619	>	}
620	>	}
621	>
622	>	/**
623	>	* getWaitQueueLength returns number of waiting threads
624	>	*/
625	>	public void testGetWaitQueueLength() {
626	>	final ReentrantLock lock = new ReentrantLock();
627	>	final Condition c = lock.newCondition();
628	>	Thread t1 = new Thread(new Runnable() {
629	>	public void run() {
630	>	try {
631	>	lock.lock();
632	>	threadAssertFalse(lock.hasWaiters(c));
633	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
634	>	c.await();
635	>	lock.unlock();
636	>	}
637	>	catch(InterruptedException e) {
638	>	threadUnexpectedException();
639	>	}
640	>	}
641	>	});
642	>
643	>	Thread t2 = new Thread(new Runnable() {
644	>	public void run() {
645	>	try {
646	>	lock.lock();
647	>	threadAssertTrue(lock.hasWaiters(c));
648	>	threadAssertEquals(1, lock.getWaitQueueLength(c));
649	>	c.await();
650	>	lock.unlock();
651	>	}
652	>	catch(InterruptedException e) {
653	>	threadUnexpectedException();
654	>	}
655	>	}
656	>	});
657	>
658	>	try {
659	>	t1.start();
660	>	Thread.sleep(SHORT_DELAY_MS);
661	>	t2.start();
662	>	Thread.sleep(SHORT_DELAY_MS);
663	>	lock.lock();
664	>	assertTrue(lock.hasWaiters(c));
665	>	assertEquals(2, lock.getWaitQueueLength(c));
666	>	c.signalAll();
667	>	lock.unlock();
668	>	Thread.sleep(SHORT_DELAY_MS);
669	>	lock.lock();
670	>	assertFalse(lock.hasWaiters(c));
671	>	assertEquals(0, lock.getWaitQueueLength(c));
672	>	lock.unlock();
673	>	t1.join(SHORT_DELAY_MS);
674	>	t2.join(SHORT_DELAY_MS);
675	>	assertFalse(t1.isAlive());
676	>	assertFalse(t2.isAlive());
677	>	}
678	>	catch (Exception ex) {
679	>	unexpectedException();
680	>	}
681	>	}
682	>
683	>	/**
684	>	* getWaitingThreads returns only and all waiting threads
685	>	*/
686	>	public void testGetWaitingThreads() {
687	>	final PublicReentrantLock lock = new PublicReentrantLock();
688	>	final Condition c = lock.newCondition();
689	>	Thread t1 = new Thread(new Runnable() {
690	>	public void run() {
691	>	try {
692	>	lock.lock();
693	>	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
694	>	c.await();
695	>	lock.unlock();
696	>	}
697	>	catch(InterruptedException e) {
698	>	threadUnexpectedException();
699	>	}
700	>	}
701	>	});
702	>
703	>	Thread t2 = new Thread(new Runnable() {
704	>	public void run() {
705	>	try {
706	>	lock.lock();
707	>	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
708	>	c.await();
709	>	lock.unlock();
710	>	}
711	>	catch(InterruptedException e) {
712	>	threadUnexpectedException();
713	>	}
714	>	}
715	>	});
716	>
717	>	try {
718	>	lock.lock();
719	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
720	>	lock.unlock();
721	>	t1.start();
722	>	Thread.sleep(SHORT_DELAY_MS);
723	>	t2.start();
724	>	Thread.sleep(SHORT_DELAY_MS);
725	>	lock.lock();
726	>	assertTrue(lock.hasWaiters(c));
727	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
728	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
729	>	c.signalAll();
730	>	lock.unlock();
731	>	Thread.sleep(SHORT_DELAY_MS);
732	>	lock.lock();
733	>	assertFalse(lock.hasWaiters(c));
734	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
735	>	lock.unlock();
736	>	t1.join(SHORT_DELAY_MS);
737	>	t2.join(SHORT_DELAY_MS);
738	>	assertFalse(t1.isAlive());
739	>	assertFalse(t2.isAlive());
740	>	}
741	>	catch (Exception ex) {
742	>	unexpectedException();
743	>	}
744	>	}
745	>
746	>
747	>
748	>	/**
749	>	* awaitUninterruptibly doesn't abort on interrupt
750	>	*/
751	>	public void testAwaitUninterruptibly() {
752	>	final ReentrantLock lock = new ReentrantLock();
753	>	final Condition c = lock.newCondition();
754	>	Thread t = new Thread(new Runnable() {
755	>	public void run() {
756	>	lock.lock();
757	>	c.awaitUninterruptibly();
758	>	lock.unlock();
759	>	}
760	>	});
761	>
762	>	try {
763	>	t.start();
764	>	Thread.sleep(SHORT_DELAY_MS);
765	>	t.interrupt();
766	>	lock.lock();
767	>	c.signal();
768	>	lock.unlock();
769	>	assert(t.isInterrupted());
770	>	t.join(SHORT_DELAY_MS);
771	>	assertFalse(t.isAlive());
772	>	}
773	>	catch (Exception ex) {
774	>	unexpectedException();
775	>	}
776	>	}
777	>
778	>	/**
779	>	* await is interruptible
780	>	*/
781	>	public void testAwait_Interrupt() {
782	>	final ReentrantLock lock = new ReentrantLock();
783	>	final Condition c = lock.newCondition();
784	>	Thread t = new Thread(new Runnable() {
785	>	public void run() {
786	>	try {
787	>	lock.lock();
788	>	c.await();
789	>	lock.unlock();
790	>	threadShouldThrow();
791	>	}
792	>	catch(InterruptedException success) {
793	>	}
794	>	}
795	>	});
796	>
797	>	try {
798	>	t.start();
799	>	Thread.sleep(SHORT_DELAY_MS);
800	>	t.interrupt();
801	>	t.join(SHORT_DELAY_MS);
802	>	assertFalse(t.isAlive());
803	>	}
804	>	catch (Exception ex) {
805	>	unexpectedException();
806	>	}
807	>	}
808	>
809	>	/**
810	>	* awaitNanos is interruptible
811	>	*/
812	>	public void testAwaitNanos_Interrupt() {
813	>	final ReentrantLock lock = new ReentrantLock();
814	>	final Condition c = lock.newCondition();
815	>	Thread t = new Thread(new Runnable() {
816	>	public void run() {
817	>	try {
818	>	lock.lock();
819	>	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
820	>	lock.unlock();
821	>	threadShouldThrow();
822	>	}
823	>	catch(InterruptedException success) {
824	>	}
825	>	}
826	>	});
827	>
828	>	try {
829	>	t.start();
830	>	Thread.sleep(SHORT_DELAY_MS);
831	>	t.interrupt();
832	>	t.join(SHORT_DELAY_MS);
833	>	assertFalse(t.isAlive());
834	>	}
835	>	catch (Exception ex) {
836	>	unexpectedException();
837	>	}
838	>	}
839	>
840	>	/**
841	>	* awaitUntil is interruptible
842	>	*/
843	>	public void testAwaitUntil_Interrupt() {
844	>	final ReentrantLock lock = new ReentrantLock();
845	>	final Condition c = lock.newCondition();
846	>	Thread t = new Thread(new Runnable() {
847	>	public void run() {
848	>	try {
849	>	lock.lock();
850	>	java.util.Date d = new java.util.Date();
851	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
852	>	lock.unlock();
853	>	threadShouldThrow();
854	>	}
855	>	catch(InterruptedException success) {
856	>	}
857	>	}
858	>	});
859	>
860	>	try {
861	>	t.start();
862	>	Thread.sleep(SHORT_DELAY_MS);
863	>	t.interrupt();
864	>	t.join(SHORT_DELAY_MS);
865	>	assertFalse(t.isAlive());
866	>	}
867	>	catch (Exception ex) {
868	>	unexpectedException();
869	>	}
870	>	}
871	>
872	>	/**
873	>	* signalAll wakes up all threads
874	>	*/
875	>	public void testSignalAll() {
876	>	final ReentrantLock lock = new ReentrantLock();
877	>	final Condition c = lock.newCondition();
878	>	Thread t1 = new Thread(new Runnable() {
879	>	public void run() {
880	>	try {
881	>	lock.lock();
882	>	c.await();
883	>	lock.unlock();
884	>	}
885	>	catch(InterruptedException e) {
886	>	threadUnexpectedException();
887	>	}
888	>	}
889	>	});
890	>
891	>	Thread t2 = new Thread(new Runnable() {
892	>	public void run() {
893	>	try {
894	>	lock.lock();
895	>	c.await();
896	>	lock.unlock();
897	>	}
898	>	catch(InterruptedException e) {
899	>	threadUnexpectedException();
900	>	}
901	>	}
902	>	});
903	>
904	>	try {
905	>	t1.start();
906	>	t2.start();
907	>	Thread.sleep(SHORT_DELAY_MS);
908	>	lock.lock();
909	>	c.signalAll();
910	>	lock.unlock();
911	>	t1.join(SHORT_DELAY_MS);
912	>	t2.join(SHORT_DELAY_MS);
913	>	assertFalse(t1.isAlive());
914	>	assertFalse(t2.isAlive());
915	>	}
916	>	catch (Exception ex) {
917	>	unexpectedException();
918	>	}
919	>	}
920	>
921	>	/**
922	>	* A serialized lock deserializes as unlocked
923	>	*/
924	>	public void testSerialization() {
925	>	ReentrantLock l = new ReentrantLock();
926	>	l.lock();
927	>	l.unlock();
928	>
929	>	try {
930	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
931	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
932	>	out.writeObject(l);
933	>	out.close();
934	>
935	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
936	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
937	>	ReentrantLock r = (ReentrantLock) in.readObject();
938	>	r.lock();
939	>	r.unlock();
940	>	} catch(Exception e){
941	>	e.printStackTrace();
942	>	unexpectedException();
943	>	}
944		}
155	–
945
946		}

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