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Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.21 by jsr166, Tue Oct 19 00:43:49 2010 UTC vs.
Revision 1.39 by jsr166, Sun May 14 02:20:48 2017 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		*/
8
9	–
10	–	import junit.framework.*;
11	–	import java.util.*;
12	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.util.concurrent.locks.*;
11	<	import java.io.*;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.HashSet;
15	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer;
16	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject;
17	>
18	>	import junit.framework.AssertionFailedError;
19	>	import junit.framework.Test;
20	>	import junit.framework.TestSuite;
21
22		public class AbstractQueuedLongSynchronizerTest extends JSR166TestCase {
23		public static void main(String[] args) {
24	<	junit.textui.TestRunner.run(suite());
24	>	main(suite(), args);
25		}
26		public static Test suite() {
27		return new TestSuite(AbstractQueuedLongSynchronizerTest.class);
28		}
29
30		/**
31	<	* A simple mutex class, adapted from the
32	<	* AbstractQueuedLongSynchronizer javadoc.  Exclusive acquire tests
28	<	* exercise this as a sample user extension.  Other
29	<	* methods/features of AbstractQueuedLongSynchronizerTest are tested
30	<	* via other test classes, including those for ReentrantLock,
31	<	* ReentrantReadWriteLock, and Semaphore
31	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
32	>	* acquire tests exercise this as a sample user extension.
33		*/
34		static class Mutex extends AbstractQueuedLongSynchronizer {
35	<	// Use value > 32 bits for locked state
36	<	static final long LOCKED = 1 << 48;
35	>	/** An eccentric value > 32 bits for locked synchronizer state. */
36	>	static final long LOCKED = (1L << 63) | (1L << 15);
37	>
38	>	static final long UNLOCKED = 0;
39	>
40		public boolean isHeldExclusively() {
41	<	return getState() == LOCKED;
41	>	long state = getState();
42	>	assertTrue(state == UNLOCKED || state == LOCKED);
43	>	return state == LOCKED;
44		}
45
46		public boolean tryAcquire(long acquires) {
47	<	return compareAndSetState(0, LOCKED);
47	>	assertEquals(LOCKED, acquires);
48	>	return compareAndSetState(UNLOCKED, LOCKED);
49		}
50
51		public boolean tryRelease(long releases) {
52	<	if (getState() == 0) throw new IllegalMonitorStateException();
53	<	setState(0);
52	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
53	>	setState(UNLOCKED);
54		return true;
55		}
56
57	<	public AbstractQueuedLongSynchronizer.ConditionObject newCondition() {
58	<	return new AbstractQueuedLongSynchronizer.ConditionObject();
57	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
58	>	return tryAcquireNanos(LOCKED, nanos);
59		}
60
61	<	}
61	>	public boolean tryAcquire() {
62	>	return tryAcquire(LOCKED);
63	>	}
64	>
65	>	public boolean tryRelease() {
66	>	return tryRelease(LOCKED);
67	>	}
68	>
69	>	public void acquire() {
70	>	acquire(LOCKED);
71	>	}
72	>
73	>	public void acquireInterruptibly() throws InterruptedException {
74	>	acquireInterruptibly(LOCKED);
75	>	}
76	>
77	>	public void release() {
78	>	release(LOCKED);
79	>	}
80
81	+	public ConditionObject newCondition() {
82	+	return new ConditionObject();
83	+	}
84	+	}
85
86		/**
87		* A simple latch class, to test shared mode.
#	Line 65 | Line 94 | public class AbstractQueuedLongSynchroni
94		}
95
96		public boolean tryReleaseShared(long ignore) {
97	<	setState(1 << 62);
97	>	setState(1L << 62);
98		return true;
99		}
100		}
#	Line 76 | Line 105 | public class AbstractQueuedLongSynchroni
105		*/
106		class InterruptibleSyncRunnable extends CheckedRunnable {
107		final Mutex sync;
108	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
108	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
109		public void realRun() throws InterruptedException {
110	<	sync.acquireInterruptibly(1);
110	>	sync.acquireInterruptibly();
111		}
112		}
113
85	–
114		/**
115		* A runnable calling acquireInterruptibly that expects to be
116		* interrupted.
117		*/
118		class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
119		final Mutex sync;
120	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
120	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
121		public void realRun() throws InterruptedException {
122	<	sync.acquireInterruptibly(1);
122	>	sync.acquireInterruptibly();
123	>	}
124	>	}
125	>
126	>	/** A constant to clarify calls to checking methods below. */
127	>	static final Thread[] NO_THREADS = new Thread[0];
128	>
129	>	/**
130	>	* Spin-waits until sync.isQueued(t) becomes true.
131	>	*/
132	>	void waitForQueuedThread(AbstractQueuedLongSynchronizer sync,
133	>	Thread t) {
134	>	long startTime = System.nanoTime();
135	>	while (!sync.isQueued(t)) {
136	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
137	>	throw new AssertionFailedError("timed out");
138	>	Thread.yield();
139	>	}
140	>	assertTrue(t.isAlive());
141	>	}
142	>
143	>	/**
144	>	* Checks that sync has exactly the given queued threads.
145	>	*/
146	>	void assertHasQueuedThreads(AbstractQueuedLongSynchronizer sync,
147	>	Thread... expected) {
148	>	Collection<Thread> actual = sync.getQueuedThreads();
149	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
150	>	assertEquals(expected.length, sync.getQueueLength());
151	>	assertEquals(expected.length, actual.size());
152	>	assertEquals(expected.length == 0, actual.isEmpty());
153	>	assertEquals(new HashSet<Thread>(actual),
154	>	new HashSet<Thread>(Arrays.asList(expected)));
155	>	}
156	>
157	>	/**
158	>	* Checks that sync has exactly the given (exclusive) queued threads.
159	>	*/
160	>	void assertHasExclusiveQueuedThreads(AbstractQueuedLongSynchronizer sync,
161	>	Thread... expected) {
162	>	assertHasQueuedThreads(sync, expected);
163	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
164	>	new HashSet<Thread>(sync.getQueuedThreads()));
165	>	assertEquals(0, sync.getSharedQueuedThreads().size());
166	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
167	>	}
168	>
169	>	/**
170	>	* Checks that sync has exactly the given (shared) queued threads.
171	>	*/
172	>	void assertHasSharedQueuedThreads(AbstractQueuedLongSynchronizer sync,
173	>	Thread... expected) {
174	>	assertHasQueuedThreads(sync, expected);
175	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
176	>	new HashSet<Thread>(sync.getQueuedThreads()));
177	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
178	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
179	>	}
180	>
181	>	/**
182	>	* Checks that condition c has exactly the given waiter threads,
183	>	* after acquiring mutex.
184	>	*/
185	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
186	>	Thread... threads) {
187	>	sync.acquire();
188	>	assertHasWaitersLocked(sync, c, threads);
189	>	sync.release();
190	>	}
191	>
192	>	/**
193	>	* Checks that condition c has exactly the given waiter threads.
194	>	*/
195	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
196	>	Thread... threads) {
197	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
198	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
199	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
200	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
201	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
202	>	new HashSet<Thread>(Arrays.asList(threads)));
203	>	}
204	>
205	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
206	>
207	>	/**
208	>	* Awaits condition using the specified AwaitMethod.
209	>	*/
210	>	void await(ConditionObject c, AwaitMethod awaitMethod)
211	>	throws InterruptedException {
212	>	long timeoutMillis = 2 * LONG_DELAY_MS;
213	>	switch (awaitMethod) {
214	>	case await:
215	>	c.await();
216	>	break;
217	>	case awaitTimed:
218	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
219	>	break;
220	>	case awaitNanos:
221	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
222	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
223	>	assertTrue(nanosRemaining > 0);
224	>	break;
225	>	case awaitUntil:
226	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
227	>	break;
228	>	default:
229	>	throw new AssertionError();
230		}
231		}
232
233		/**
234	+	* Checks that awaiting the given condition times out (using the
235	+	* default timeout duration).
236	+	*/
237	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
238	+	final long timeoutMillis = timeoutMillis();
239	+	final long startTime;
240	+	try {
241	+	switch (awaitMethod) {
242	+	case awaitTimed:
243	+	startTime = System.nanoTime();
244	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
245	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
246	+	break;
247	+	case awaitNanos:
248	+	startTime = System.nanoTime();
249	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
250	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
251	+	assertTrue(nanosRemaining <= 0);
252	+	assertTrue(nanosRemaining > -MILLISECONDS.toNanos(LONG_DELAY_MS));
253	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
254	+	break;
255	+	case awaitUntil:
256	+	// We shouldn't assume that nanoTime and currentTimeMillis
257	+	// use the same time source, so don't use nanoTime here.
258	+	java.util.Date delayedDate = delayedDate(timeoutMillis);
259	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
260	+	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
261	+	break;
262	+	default:
263	+	throw new UnsupportedOperationException();
264	+	}
265	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
266	+	}
267	+
268	+	/**
269		* isHeldExclusively is false upon construction
270		*/
271		public void testIsHeldExclusively() {
272	<	Mutex rl = new Mutex();
273	<	assertFalse(rl.isHeldExclusively());
272	>	Mutex sync = new Mutex();
273	>	assertFalse(sync.isHeldExclusively());
274		}
275
276		/**
277		* acquiring released sync succeeds
278		*/
279		public void testAcquire() {
280	<	Mutex rl = new Mutex();
281	<	rl.acquire(1);
282	<	assertTrue(rl.isHeldExclusively());
283	<	rl.release(1);
284	<	assertFalse(rl.isHeldExclusively());
280	>	Mutex sync = new Mutex();
281	>	sync.acquire();
282	>	assertTrue(sync.isHeldExclusively());
283	>	sync.release();
284	>	assertFalse(sync.isHeldExclusively());
285		}
286
287		/**
288	<	* tryAcquire on an released sync succeeds
288	>	* tryAcquire on a released sync succeeds
289		*/
290		public void testTryAcquire() {
291	<	Mutex rl = new Mutex();
292	<	assertTrue(rl.tryAcquire(1));
293	<	assertTrue(rl.isHeldExclusively());
294	<	rl.release(1);
291	>	Mutex sync = new Mutex();
292	>	assertTrue(sync.tryAcquire());
293	>	assertTrue(sync.isHeldExclusively());
294	>	sync.release();
295	>	assertFalse(sync.isHeldExclusively());
296		}
297
298		/**
299		* hasQueuedThreads reports whether there are waiting threads
300		*/
301	<	public void testhasQueuedThreads() throws InterruptedException {
301	>	public void testHasQueuedThreads() {
302		final Mutex sync = new Mutex();
132	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
133	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
303		assertFalse(sync.hasQueuedThreads());
304	<	sync.acquire(1);
305	<	t1.start();
306	<	Thread.sleep(SHORT_DELAY_MS);
304	>	sync.acquire();
305	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
306	>	waitForQueuedThread(sync, t1);
307		assertTrue(sync.hasQueuedThreads());
308	<	t2.start();
309	<	Thread.sleep(SHORT_DELAY_MS);
308	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
309	>	waitForQueuedThread(sync, t2);
310		assertTrue(sync.hasQueuedThreads());
311		t1.interrupt();
312	<	Thread.sleep(SHORT_DELAY_MS);
312	>	awaitTermination(t1);
313		assertTrue(sync.hasQueuedThreads());
314	<	sync.release(1);
315	<	Thread.sleep(SHORT_DELAY_MS);
314	>	sync.release();
315	>	awaitTermination(t2);
316		assertFalse(sync.hasQueuedThreads());
148	–	t1.join();
149	–	t2.join();
317		}
318
319		/**
320	<	* isQueued(null) throws NPE
320	>	* isQueued(null) throws NullPointerException
321		*/
322		public void testIsQueuedNPE() {
323		final Mutex sync = new Mutex();
#	Line 161 | Line 328 | public class AbstractQueuedLongSynchroni
328		}
329
330		/**
331	<	* isQueued reports whether a thread is queued.
331	>	* isQueued reports whether a thread is queued
332		*/
333	<	public void testIsQueued() throws InterruptedException {
333	>	public void testIsQueued() {
334		final Mutex sync = new Mutex();
335		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
336		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
337		assertFalse(sync.isQueued(t1));
338		assertFalse(sync.isQueued(t2));
339	<	sync.acquire(1);
339	>	sync.acquire();
340		t1.start();
341	<	Thread.sleep(SHORT_DELAY_MS);
341	>	waitForQueuedThread(sync, t1);
342		assertTrue(sync.isQueued(t1));
343	+	assertFalse(sync.isQueued(t2));
344		t2.start();
345	<	Thread.sleep(SHORT_DELAY_MS);
345	>	waitForQueuedThread(sync, t2);
346		assertTrue(sync.isQueued(t1));
347		assertTrue(sync.isQueued(t2));
348		t1.interrupt();
349	<	Thread.sleep(SHORT_DELAY_MS);
349	>	awaitTermination(t1);
350		assertFalse(sync.isQueued(t1));
351		assertTrue(sync.isQueued(t2));
352	<	sync.release(1);
353	<	Thread.sleep(SHORT_DELAY_MS);
352	>	sync.release();
353	>	awaitTermination(t2);
354		assertFalse(sync.isQueued(t1));
187	–	Thread.sleep(SHORT_DELAY_MS);
355		assertFalse(sync.isQueued(t2));
189	–	t1.join();
190	–	t2.join();
356		}
357
358		/**
359		* getFirstQueuedThread returns first waiting thread or null if none
360		*/
361	<	public void testGetFirstQueuedThread() throws InterruptedException {
361	>	public void testGetFirstQueuedThread() {
362		final Mutex sync = new Mutex();
198	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
199	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
363		assertNull(sync.getFirstQueuedThread());
364	<	sync.acquire(1);
365	<	t1.start();
366	<	Thread.sleep(SHORT_DELAY_MS);
364	>	sync.acquire();
365	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
366	>	waitForQueuedThread(sync, t1);
367		assertEquals(t1, sync.getFirstQueuedThread());
368	<	t2.start();
369	<	Thread.sleep(SHORT_DELAY_MS);
368	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
369	>	waitForQueuedThread(sync, t2);
370		assertEquals(t1, sync.getFirstQueuedThread());
371		t1.interrupt();
372	<	Thread.sleep(SHORT_DELAY_MS);
210	<	Thread.sleep(SHORT_DELAY_MS);
372	>	awaitTermination(t1);
373		assertEquals(t2, sync.getFirstQueuedThread());
374	<	sync.release(1);
375	<	Thread.sleep(SHORT_DELAY_MS);
374	>	sync.release();
375	>	awaitTermination(t2);
376		assertNull(sync.getFirstQueuedThread());
215	–	t1.join();
216	–	t2.join();
377		}
378
219	–
379		/**
380		* hasContended reports false if no thread has ever blocked, else true
381		*/
382	<	public void testHasContended() throws InterruptedException {
382	>	public void testHasContended() {
383		final Mutex sync = new Mutex();
225	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
226	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
384		assertFalse(sync.hasContended());
385	<	sync.acquire(1);
386	<	t1.start();
387	<	Thread.sleep(SHORT_DELAY_MS);
385	>	sync.acquire();
386	>	assertFalse(sync.hasContended());
387	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
388	>	waitForQueuedThread(sync, t1);
389		assertTrue(sync.hasContended());
390	<	t2.start();
391	<	Thread.sleep(SHORT_DELAY_MS);
390	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
391	>	waitForQueuedThread(sync, t2);
392		assertTrue(sync.hasContended());
393		t1.interrupt();
394	<	Thread.sleep(SHORT_DELAY_MS);
394	>	awaitTermination(t1);
395		assertTrue(sync.hasContended());
396	<	sync.release(1);
397	<	Thread.sleep(SHORT_DELAY_MS);
396	>	sync.release();
397	>	awaitTermination(t2);
398		assertTrue(sync.hasContended());
241	–	t1.join();
242	–	t2.join();
399		}
400
401		/**
402	<	* getQueuedThreads includes waiting threads
402	>	* getQueuedThreads returns all waiting threads
403		*/
404	<	public void testGetQueuedThreads() throws InterruptedException {
404	>	public void testGetQueuedThreads() {
405		final Mutex sync = new Mutex();
406		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
407		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
408	<	assertTrue(sync.getQueuedThreads().isEmpty());
409	<	sync.acquire(1);
410	<	assertTrue(sync.getQueuedThreads().isEmpty());
408	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
409	>	sync.acquire();
410	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
411		t1.start();
412	<	Thread.sleep(SHORT_DELAY_MS);
412	>	waitForQueuedThread(sync, t1);
413	>	assertHasExclusiveQueuedThreads(sync, t1);
414		assertTrue(sync.getQueuedThreads().contains(t1));
415	+	assertFalse(sync.getQueuedThreads().contains(t2));
416		t2.start();
417	<	Thread.sleep(SHORT_DELAY_MS);
417	>	waitForQueuedThread(sync, t2);
418	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
419		assertTrue(sync.getQueuedThreads().contains(t1));
420		assertTrue(sync.getQueuedThreads().contains(t2));
421		t1.interrupt();
422	<	Thread.sleep(SHORT_DELAY_MS);
423	<	assertFalse(sync.getQueuedThreads().contains(t1));
424	<	assertTrue(sync.getQueuedThreads().contains(t2));
425	<	sync.release(1);
426	<	Thread.sleep(SHORT_DELAY_MS);
268	<	assertTrue(sync.getQueuedThreads().isEmpty());
269	<	t1.join();
270	<	t2.join();
422	>	awaitTermination(t1);
423	>	assertHasExclusiveQueuedThreads(sync, t2);
424	>	sync.release();
425	>	awaitTermination(t2);
426	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
427		}
428
429		/**
430	<	* getExclusiveQueuedThreads includes waiting threads
430	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
431		*/
432	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
432	>	public void testGetExclusiveQueuedThreads() {
433		final Mutex sync = new Mutex();
434		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
435		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
436	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
437	<	sync.acquire(1);
438	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
436	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
437	>	sync.acquire();
438	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
439		t1.start();
440	<	Thread.sleep(SHORT_DELAY_MS);
440	>	waitForQueuedThread(sync, t1);
441	>	assertHasExclusiveQueuedThreads(sync, t1);
442		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
443	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
444		t2.start();
445	<	Thread.sleep(SHORT_DELAY_MS);
445	>	waitForQueuedThread(sync, t2);
446	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
447		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
448		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
449		t1.interrupt();
450	<	Thread.sleep(SHORT_DELAY_MS);
451	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
452	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
453	<	sync.release(1);
454	<	Thread.sleep(SHORT_DELAY_MS);
296	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
297	<	t1.join();
298	<	t2.join();
450	>	awaitTermination(t1);
451	>	assertHasExclusiveQueuedThreads(sync, t2);
452	>	sync.release();
453	>	awaitTermination(t2);
454	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
455		}
456
457		/**
458		* getSharedQueuedThreads does not include exclusively waiting threads
459		*/
460	<	public void testGetSharedQueuedThreads() throws InterruptedException {
460	>	public void testGetSharedQueuedThreads_Exclusive() {
461		final Mutex sync = new Mutex();
306	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
307	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
462		assertTrue(sync.getSharedQueuedThreads().isEmpty());
463	<	sync.acquire(1);
463	>	sync.acquire();
464		assertTrue(sync.getSharedQueuedThreads().isEmpty());
465	<	t1.start();
466	<	Thread.sleep(SHORT_DELAY_MS);
465	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
466	>	waitForQueuedThread(sync, t1);
467		assertTrue(sync.getSharedQueuedThreads().isEmpty());
468	<	t2.start();
469	<	Thread.sleep(SHORT_DELAY_MS);
468	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
469	>	waitForQueuedThread(sync, t2);
470		assertTrue(sync.getSharedQueuedThreads().isEmpty());
471		t1.interrupt();
472	<	Thread.sleep(SHORT_DELAY_MS);
472	>	awaitTermination(t1);
473		assertTrue(sync.getSharedQueuedThreads().isEmpty());
474	<	sync.release(1);
475	<	Thread.sleep(SHORT_DELAY_MS);
474	>	sync.release();
475	>	awaitTermination(t2);
476		assertTrue(sync.getSharedQueuedThreads().isEmpty());
323	–	t1.join();
324	–	t2.join();
477		}
478
479		/**
480	<	* tryAcquireNanos is interruptible.
480	>	* getSharedQueuedThreads returns all shared waiting threads
481	>	*/
482	>	public void testGetSharedQueuedThreads_Shared() {
483	>	final BooleanLatch l = new BooleanLatch();
484	>	assertHasSharedQueuedThreads(l, NO_THREADS);
485	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
486	>	public void realRun() throws InterruptedException {
487	>	l.acquireSharedInterruptibly(0);
488	>	}});
489	>	waitForQueuedThread(l, t1);
490	>	assertHasSharedQueuedThreads(l, t1);
491	>	Thread t2 = newStartedThread(new CheckedRunnable() {
492	>	public void realRun() throws InterruptedException {
493	>	l.acquireSharedInterruptibly(0);
494	>	}});
495	>	waitForQueuedThread(l, t2);
496	>	assertHasSharedQueuedThreads(l, t1, t2);
497	>	t1.interrupt();
498	>	awaitTermination(t1);
499	>	assertHasSharedQueuedThreads(l, t2);
500	>	assertTrue(l.releaseShared(0));
501	>	awaitTermination(t2);
502	>	assertHasSharedQueuedThreads(l, NO_THREADS);
503	>	}
504	>
505	>	/**
506	>	* tryAcquireNanos is interruptible
507		*/
508	<	public void testInterruptedException2() throws InterruptedException {
508	>	public void testTryAcquireNanos_Interruptible() {
509		final Mutex sync = new Mutex();
510	<	sync.acquire(1);
511	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
510	>	sync.acquire();
511	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
512		public void realRun() throws InterruptedException {
513	<	sync.tryAcquireNanos(1, MILLISECONDS.toNanos(MEDIUM_DELAY_MS));
513	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
514		}});
515
516	<	t.start();
339	<	Thread.sleep(SHORT_DELAY_MS);
516	>	waitForQueuedThread(sync, t);
517		t.interrupt();
518	<	t.join();
518	>	awaitTermination(t);
519		}
520
344	–
521		/**
522	<	* TryAcquire on exclusively held sync fails
522	>	* tryAcquire on exclusively held sync fails
523		*/
524	<	public void testTryAcquireWhenSynced() throws InterruptedException {
524	>	public void testTryAcquireWhenSynced() {
525		final Mutex sync = new Mutex();
526	<	sync.acquire(1);
527	<	Thread t = new Thread(new CheckedRunnable() {
526	>	sync.acquire();
527	>	Thread t = newStartedThread(new CheckedRunnable() {
528		public void realRun() {
529	<	assertFalse(sync.tryAcquire(1));
529	>	assertFalse(sync.tryAcquire());
530		}});
531
532	<	t.start();
533	<	t.join();
358	<	sync.release(1);
532	>	awaitTermination(t);
533	>	sync.release();
534		}
535
536		/**
537		* tryAcquireNanos on an exclusively held sync times out
538		*/
539	<	public void testAcquireNanos_Timeout() throws InterruptedException {
539	>	public void testAcquireNanos_Timeout() {
540		final Mutex sync = new Mutex();
541	<	sync.acquire(1);
542	<	Thread t = new Thread(new CheckedRunnable() {
541	>	sync.acquire();
542	>	Thread t = newStartedThread(new CheckedRunnable() {
543		public void realRun() throws InterruptedException {
544	<	long nanos = MILLISECONDS.toNanos(SHORT_DELAY_MS);
545	<	assertFalse(sync.tryAcquireNanos(1, nanos));
544	>	long startTime = System.nanoTime();
545	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
546	>	assertFalse(sync.tryAcquireNanos(nanos));
547	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
548		}});
549
550	<	t.start();
551	<	t.join();
375	<	sync.release(1);
550	>	awaitTermination(t);
551	>	sync.release();
552		}
553
378	–
554		/**
555		* getState is true when acquired and false when not
556		*/
557	<	public void testGetState() throws InterruptedException {
557	>	public void testGetState() {
558		final Mutex sync = new Mutex();
559	<	sync.acquire(1);
559	>	sync.acquire();
560		assertTrue(sync.isHeldExclusively());
561	<	sync.release(1);
561	>	sync.release();
562		assertFalse(sync.isHeldExclusively());
563	<	Thread t = new Thread(new CheckedRunnable() {
563	>
564	>	final BooleanLatch acquired = new BooleanLatch();
565	>	final BooleanLatch done = new BooleanLatch();
566	>	Thread t = newStartedThread(new CheckedRunnable() {
567		public void realRun() throws InterruptedException {
568	<	sync.acquire(1);
569	<	Thread.sleep(SMALL_DELAY_MS);
570	<	sync.release(1);
568	>	sync.acquire();
569	>	assertTrue(acquired.releaseShared(0));
570	>	done.acquireShared(0);
571	>	sync.release();
572		}});
573
574	<	t.start();
396	<	Thread.sleep(SHORT_DELAY_MS);
574	>	acquired.acquireShared(0);
575		assertTrue(sync.isHeldExclusively());
576	<	t.join();
576	>	assertTrue(done.releaseShared(0));
577	>	awaitTermination(t);
578		assertFalse(sync.isHeldExclusively());
579		}
580
402	–
403	–	/**
404	–	* acquireInterruptibly is interruptible.
405	–	*/
406	–	public void testAcquireInterruptibly1() throws InterruptedException {
407	–	final Mutex sync = new Mutex();
408	–	sync.acquire(1);
409	–	Thread t = new Thread(new InterruptedSyncRunnable(sync));
410	–	t.start();
411	–	Thread.sleep(SHORT_DELAY_MS);
412	–	t.interrupt();
413	–	Thread.sleep(SHORT_DELAY_MS);
414	–	sync.release(1);
415	–	t.join();
416	–	}
417	–
581		/**
582		* acquireInterruptibly succeeds when released, else is interruptible
583		*/
584	<	public void testAcquireInterruptibly2() throws InterruptedException {
584	>	public void testAcquireInterruptibly() throws InterruptedException {
585		final Mutex sync = new Mutex();
586	<	sync.acquireInterruptibly(1);
587	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
588	<	t.start();
589	<	Thread.sleep(SHORT_DELAY_MS);
586	>	final BooleanLatch threadStarted = new BooleanLatch();
587	>	sync.acquireInterruptibly();
588	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
589	>	public void realRun() throws InterruptedException {
590	>	assertTrue(threadStarted.releaseShared(0));
591	>	sync.acquireInterruptibly();
592	>	}});
593	>
594	>	threadStarted.acquireShared(0);
595	>	waitForQueuedThread(sync, t);
596		t.interrupt();
597	+	awaitTermination(t);
598		assertTrue(sync.isHeldExclusively());
429	–	t.join();
599		}
600
601		/**
#	Line 434 | Line 603 | public class AbstractQueuedLongSynchroni
603		*/
604		public void testOwns() {
605		final Mutex sync = new Mutex();
606	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
606	>	final ConditionObject c = sync.newCondition();
607		final Mutex sync2 = new Mutex();
608		assertTrue(sync.owns(c));
609		assertFalse(sync2.owns(c));
#	Line 443 | Line 612 | public class AbstractQueuedLongSynchroni
612		/**
613		* Calling await without holding sync throws IllegalMonitorStateException
614		*/
615	<	public void testAwait_IllegalMonitor() throws InterruptedException {
615	>	public void testAwait_IMSE() {
616		final Mutex sync = new Mutex();
617	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
618	<	try {
619	<	c.await();
620	<	shouldThrow();
621	<	} catch (IllegalMonitorStateException success) {}
617	>	final ConditionObject c = sync.newCondition();
618	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
619	>	long startTime = System.nanoTime();
620	>	try {
621	>	await(c, awaitMethod);
622	>	shouldThrow();
623	>	} catch (IllegalMonitorStateException success) {
624	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
625	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
626	>	}
627		}
628
629		/**
630		* Calling signal without holding sync throws IllegalMonitorStateException
631		*/
632	<	public void testSignal_IllegalMonitor() throws InterruptedException {
632	>	public void testSignal_IMSE() {
633		final Mutex sync = new Mutex();
634	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
634	>	final ConditionObject c = sync.newCondition();
635		try {
636		c.signal();
637		shouldThrow();
638		} catch (IllegalMonitorStateException success) {}
639	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
640		}
641
642		/**
643	<	* awaitNanos without a signal times out
469	<	*/
470	<	public void testAwaitNanos_Timeout() throws InterruptedException {
471	<	final Mutex sync = new Mutex();
472	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
473	<	sync.acquire(1);
474	<	long t = c.awaitNanos(100);
475	<	assertTrue(t <= 0);
476	<	sync.release(1);
477	<	}
478	<
479	<	/**
480	<	* Timed await without a signal times out
643	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
644		*/
645	<	public void testAwait_Timeout() throws InterruptedException {
645	>	public void testSignalAll_IMSE() {
646		final Mutex sync = new Mutex();
647	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
648	<	sync.acquire(1);
649	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
650	<	sync.release(1);
647	>	final ConditionObject c = sync.newCondition();
648	>	try {
649	>	c.signalAll();
650	>	shouldThrow();
651	>	} catch (IllegalMonitorStateException success) {}
652		}
653
654		/**
655	<	* awaitUntil without a signal times out
655	>	* await/awaitNanos/awaitUntil without a signal times out
656		*/
657	<	public void testAwaitUntil_Timeout() throws InterruptedException {
657	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
658	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
659	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
660	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
661		final Mutex sync = new Mutex();
662	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
663	<	sync.acquire(1);
664	<	java.util.Date d = new java.util.Date();
665	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
499	<	sync.release(1);
662	>	final ConditionObject c = sync.newCondition();
663	>	sync.acquire();
664	>	assertAwaitTimesOut(c, awaitMethod);
665	>	sync.release();
666		}
667
668		/**
669	<	* await returns when signalled
669	>	* await/awaitNanos/awaitUntil returns when signalled
670		*/
671	<	public void testAwait() throws InterruptedException {
671	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
672	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
673	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
674	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
675	>	public void testSignal(final AwaitMethod awaitMethod) {
676		final Mutex sync = new Mutex();
677	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
678	<	Thread t = new Thread(new CheckedRunnable() {
677	>	final ConditionObject c = sync.newCondition();
678	>	final BooleanLatch acquired = new BooleanLatch();
679	>	Thread t = newStartedThread(new CheckedRunnable() {
680		public void realRun() throws InterruptedException {
681	<	sync.acquire(1);
682	<	c.await();
683	<	sync.release(1);
681	>	sync.acquire();
682	>	assertTrue(acquired.releaseShared(0));
683	>	await(c, awaitMethod);
684	>	sync.release();
685		}});
686
687	<	t.start();
688	<	Thread.sleep(SHORT_DELAY_MS);
689	<	sync.acquire(1);
687	>	acquired.acquireShared(0);
688	>	sync.acquire();
689	>	assertHasWaitersLocked(sync, c, t);
690	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
691		c.signal();
692	<	sync.release(1);
693	<	t.join(SHORT_DELAY_MS);
694	<	assertFalse(t.isAlive());
692	>	assertHasWaitersLocked(sync, c, NO_THREADS);
693	>	assertHasExclusiveQueuedThreads(sync, t);
694	>	sync.release();
695	>	awaitTermination(t);
696		}
697
524	–
525	–
698		/**
699	<	* hasWaiters throws NPE if null
699	>	* hasWaiters(null) throws NullPointerException
700		*/
701		public void testHasWaitersNPE() {
702		final Mutex sync = new Mutex();
#	Line 535 | Line 707 | public class AbstractQueuedLongSynchroni
707		}
708
709		/**
710	<	* getWaitQueueLength throws NPE if null
710	>	* getWaitQueueLength(null) throws NullPointerException
711		*/
712		public void testGetWaitQueueLengthNPE() {
713		final Mutex sync = new Mutex();
#	Line 545 | Line 717 | public class AbstractQueuedLongSynchroni
717		} catch (NullPointerException success) {}
718		}
719
548	–
720		/**
721		* getWaitingThreads throws NPE if null
722		*/
#	Line 557 | Line 728 | public class AbstractQueuedLongSynchroni
728		} catch (NullPointerException success) {}
729		}
730
560	–
731		/**
732	<	* hasWaiters throws IAE if not owned
732	>	* hasWaiters throws IllegalArgumentException if not owned
733		*/
734		public void testHasWaitersIAE() {
735		final Mutex sync = new Mutex();
736	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
736	>	final ConditionObject c = sync.newCondition();
737		final Mutex sync2 = new Mutex();
738		try {
739		sync2.hasWaiters(c);
740		shouldThrow();
741		} catch (IllegalArgumentException success) {}
742	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
743		}
744
745		/**
746	<	* hasWaiters throws IMSE if not synced
746	>	* hasWaiters throws IllegalMonitorStateException if not synced
747		*/
748		public void testHasWaitersIMSE() {
749		final Mutex sync = new Mutex();
750	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
750	>	final ConditionObject c = sync.newCondition();
751		try {
752		sync.hasWaiters(c);
753		shouldThrow();
754		} catch (IllegalMonitorStateException success) {}
755	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
756		}
757
586	–
758		/**
759	<	* getWaitQueueLength throws IAE if not owned
759	>	* getWaitQueueLength throws IllegalArgumentException if not owned
760		*/
761		public void testGetWaitQueueLengthIAE() {
762		final Mutex sync = new Mutex();
763	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
763	>	final ConditionObject c = sync.newCondition();
764		final Mutex sync2 = new Mutex();
765		try {
766		sync2.getWaitQueueLength(c);
767		shouldThrow();
768		} catch (IllegalArgumentException success) {}
769	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
770		}
771
772		/**
773	<	* getWaitQueueLength throws IMSE if not synced
773	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
774		*/
775		public void testGetWaitQueueLengthIMSE() {
776		final Mutex sync = new Mutex();
777	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
777	>	final ConditionObject c = sync.newCondition();
778		try {
779		sync.getWaitQueueLength(c);
780		shouldThrow();
781		} catch (IllegalMonitorStateException success) {}
782	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
783		}
784
612	–
785		/**
786	<	* getWaitingThreads throws IAE if not owned
786	>	* getWaitingThreads throws IllegalArgumentException if not owned
787		*/
788		public void testGetWaitingThreadsIAE() {
789		final Mutex sync = new Mutex();
790	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
790	>	final ConditionObject c = sync.newCondition();
791		final Mutex sync2 = new Mutex();
792		try {
793		sync2.getWaitingThreads(c);
794		shouldThrow();
795		} catch (IllegalArgumentException success) {}
796	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
797		}
798
799		/**
800	<	* getWaitingThreads throws IMSE if not synced
800	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
801		*/
802		public void testGetWaitingThreadsIMSE() {
803		final Mutex sync = new Mutex();
804	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
804	>	final ConditionObject c = sync.newCondition();
805		try {
806		sync.getWaitingThreads(c);
807		shouldThrow();
808		} catch (IllegalMonitorStateException success) {}
809	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
810		}
811
638	–
639	–
812		/**
813		* hasWaiters returns true when a thread is waiting, else false
814		*/
815	<	public void testHasWaiters() throws InterruptedException {
815	>	public void testHasWaiters() {
816		final Mutex sync = new Mutex();
817	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
818	<	Thread t = new Thread(new CheckedRunnable() {
817	>	final ConditionObject c = sync.newCondition();
818	>	final BooleanLatch acquired = new BooleanLatch();
819	>	Thread t = newStartedThread(new CheckedRunnable() {
820		public void realRun() throws InterruptedException {
821	<	sync.acquire(1);
821	>	sync.acquire();
822	>	assertHasWaitersLocked(sync, c, NO_THREADS);
823		assertFalse(sync.hasWaiters(c));
824	<	assertEquals(0, sync.getWaitQueueLength(c));
824	>	assertTrue(acquired.releaseShared(0));
825		c.await();
826	<	sync.release(1);
826	>	sync.release();
827		}});
828
829	<	t.start();
830	<	Thread.sleep(SHORT_DELAY_MS);
831	<	sync.acquire(1);
829	>	acquired.acquireShared(0);
830	>	sync.acquire();
831	>	assertHasWaitersLocked(sync, c, t);
832	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
833		assertTrue(sync.hasWaiters(c));
659	–	assertEquals(1, sync.getWaitQueueLength(c));
834		c.signal();
835	<	sync.release(1);
836	<	Thread.sleep(SHORT_DELAY_MS);
663	<	sync.acquire(1);
835	>	assertHasWaitersLocked(sync, c, NO_THREADS);
836	>	assertHasExclusiveQueuedThreads(sync, t);
837		assertFalse(sync.hasWaiters(c));
838	<	assertEquals(0, sync.getWaitQueueLength(c));
839	<	sync.release(1);
840	<	t.join(SHORT_DELAY_MS);
841	<	assertFalse(t.isAlive());
838	>	sync.release();
839	>
840	>	awaitTermination(t);
841	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
842		}
843
844		/**
845		* getWaitQueueLength returns number of waiting threads
846		*/
847	<	public void testGetWaitQueueLength() throws InterruptedException {
847	>	public void testGetWaitQueueLength() {
848		final Mutex sync = new Mutex();
849	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
850	<	Thread t1 = new Thread(new CheckedRunnable() {
849	>	final ConditionObject c = sync.newCondition();
850	>	final BooleanLatch acquired1 = new BooleanLatch();
851	>	final BooleanLatch acquired2 = new BooleanLatch();
852	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
853		public void realRun() throws InterruptedException {
854	<	sync.acquire(1);
855	<	assertFalse(sync.hasWaiters(c));
854	>	sync.acquire();
855	>	assertHasWaitersLocked(sync, c, NO_THREADS);
856		assertEquals(0, sync.getWaitQueueLength(c));
857	+	assertTrue(acquired1.releaseShared(0));
858		c.await();
859	<	sync.release(1);
859	>	sync.release();
860		}});
861	+	acquired1.acquireShared(0);
862	+	sync.acquire();
863	+	assertHasWaitersLocked(sync, c, t1);
864	+	assertEquals(1, sync.getWaitQueueLength(c));
865	+	sync.release();
866
867	<	Thread t2 = new Thread(new CheckedRunnable() {
867	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
868		public void realRun() throws InterruptedException {
869	<	sync.acquire(1);
870	<	assertTrue(sync.hasWaiters(c));
869	>	sync.acquire();
870	>	assertHasWaitersLocked(sync, c, t1);
871		assertEquals(1, sync.getWaitQueueLength(c));
872	+	assertTrue(acquired2.releaseShared(0));
873		c.await();
874	<	sync.release(1);
874	>	sync.release();
875		}});
876	<
877	<	t1.start();
878	<	Thread.sleep(SHORT_DELAY_MS);
879	<	t2.start();
698	<	Thread.sleep(SHORT_DELAY_MS);
699	<	sync.acquire(1);
700	<	assertTrue(sync.hasWaiters(c));
876	>	acquired2.acquireShared(0);
877	>	sync.acquire();
878	>	assertHasWaitersLocked(sync, c, t1, t2);
879	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
880		assertEquals(2, sync.getWaitQueueLength(c));
881		c.signalAll();
882	<	sync.release(1);
883	<	Thread.sleep(SHORT_DELAY_MS);
705	<	sync.acquire(1);
706	<	assertFalse(sync.hasWaiters(c));
882	>	assertHasWaitersLocked(sync, c, NO_THREADS);
883	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
884		assertEquals(0, sync.getWaitQueueLength(c));
885	<	sync.release(1);
886	<	t1.join(SHORT_DELAY_MS);
887	<	t2.join(SHORT_DELAY_MS);
888	<	assertFalse(t1.isAlive());
889	<	assertFalse(t2.isAlive());
885	>	sync.release();
886	>
887	>	awaitTermination(t1);
888	>	awaitTermination(t2);
889	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
890		}
891
892		/**
893		* getWaitingThreads returns only and all waiting threads
894		*/
895	<	public void testGetWaitingThreads() throws InterruptedException {
895	>	public void testGetWaitingThreads() {
896		final Mutex sync = new Mutex();
897	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
898	<	Thread t1 = new Thread(new CheckedRunnable() {
897	>	final ConditionObject c = sync.newCondition();
898	>	final BooleanLatch acquired1 = new BooleanLatch();
899	>	final BooleanLatch acquired2 = new BooleanLatch();
900	>	final Thread t1 = new Thread(new CheckedRunnable() {
901		public void realRun() throws InterruptedException {
902	<	sync.acquire(1);
902	>	sync.acquire();
903	>	assertHasWaitersLocked(sync, c, NO_THREADS);
904		assertTrue(sync.getWaitingThreads(c).isEmpty());
905	+	assertTrue(acquired1.releaseShared(0));
906		c.await();
907	<	sync.release(1);
907	>	sync.release();
908		}});
909
910	<	Thread t2 = new Thread(new CheckedRunnable() {
910	>	final Thread t2 = new Thread(new CheckedRunnable() {
911		public void realRun() throws InterruptedException {
912	<	sync.acquire(1);
912	>	sync.acquire();
913	>	assertHasWaitersLocked(sync, c, t1);
914	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
915		assertFalse(sync.getWaitingThreads(c).isEmpty());
916	+	assertEquals(1, sync.getWaitingThreads(c).size());
917	+	assertTrue(acquired2.releaseShared(0));
918		c.await();
919	<	sync.release(1);
919	>	sync.release();
920		}});
921
922	<	sync.acquire(1);
923	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
924	<	sync.release(1);
925	<	t1.start();
926	<	Thread.sleep(SHORT_DELAY_MS);
927	<	t2.start();
928	<	Thread.sleep(SHORT_DELAY_MS);
744	<	sync.acquire(1);
745	<	assertTrue(sync.hasWaiters(c));
746	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
747	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
748	<	c.signalAll();
749	<	sync.release(1);
750	<	Thread.sleep(SHORT_DELAY_MS);
751	<	sync.acquire(1);
752	<	assertFalse(sync.hasWaiters(c));
753	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
754	<	sync.release(1);
755	<	t1.join(SHORT_DELAY_MS);
756	<	t2.join(SHORT_DELAY_MS);
757	<	assertFalse(t1.isAlive());
758	<	assertFalse(t2.isAlive());
759	<	}
760	<
761	<
762	<
763	<	/**
764	<	* awaitUninterruptibly doesn't abort on interrupt
765	<	*/
766	<	public void testAwaitUninterruptibly() throws InterruptedException {
767	<	final Mutex sync = new Mutex();
768	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
769	<	Thread t = new Thread(new CheckedRunnable() {
770	<	public void realRun() {
771	<	sync.acquire(1);
772	<	c.awaitUninterruptibly();
773	<	sync.release(1);
774	<	}});
922	>	sync.acquire();
923	>	assertHasWaitersLocked(sync, c, NO_THREADS);
924	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
925	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
926	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
927	>	assertEquals(0, sync.getWaitingThreads(c).size());
928	>	sync.release();
929
930	<	t.start();
931	<	Thread.sleep(SHORT_DELAY_MS);
932	<	t.interrupt();
933	<	sync.acquire(1);
934	<	c.signal();
935	<	sync.release(1);
936	<	t.join(SHORT_DELAY_MS);
937	<	assertFalse(t.isAlive());
938	<	}
930	>	t1.start();
931	>	acquired1.acquireShared(0);
932	>	sync.acquire();
933	>	assertHasWaitersLocked(sync, c, t1);
934	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
935	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
936	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
937	>	assertEquals(1, sync.getWaitingThreads(c).size());
938	>	sync.release();
939
940	<	/**
941	<	* await is interruptible
942	<	*/
943	<	public void testAwait_Interrupt() throws InterruptedException {
944	<	final Mutex sync = new Mutex();
945	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
946	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
947	<	public void realRun() throws InterruptedException {
948	<	sync.acquire(1);
949	<	c.await();
950	<	}});
940	>	t2.start();
941	>	acquired2.acquireShared(0);
942	>	sync.acquire();
943	>	assertHasWaitersLocked(sync, c, t1, t2);
944	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
945	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
946	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
947	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
948	>	assertEquals(2, sync.getWaitingThreads(c).size());
949	>	c.signalAll();
950	>	assertHasWaitersLocked(sync, c, NO_THREADS);
951	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
952	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
953	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
954	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
955	>	assertEquals(0, sync.getWaitingThreads(c).size());
956	>	sync.release();
957
958	<	t.start();
959	<	Thread.sleep(SHORT_DELAY_MS);
960	<	t.interrupt();
801	<	t.join(SHORT_DELAY_MS);
802	<	assertFalse(t.isAlive());
958	>	awaitTermination(t1);
959	>	awaitTermination(t2);
960	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
961		}
962
963		/**
964	<	* awaitNanos is interruptible
964	>	* awaitUninterruptibly is uninterruptible
965		*/
966	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
966	>	public void testAwaitUninterruptibly() {
967		final Mutex sync = new Mutex();
968	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
969	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
970	<	public void realRun() throws InterruptedException {
971	<	sync.acquire(1);
972	<	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
968	>	final ConditionObject condition = sync.newCondition();
969	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
970	>	Thread t = newStartedThread(new CheckedRunnable() {
971	>	public void realRun() {
972	>	sync.acquire();
973	>	assertTrue(pleaseInterrupt.releaseShared(0));
974	>	condition.awaitUninterruptibly();
975	>	assertTrue(Thread.interrupted());
976	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
977	>	sync.release();
978		}});
979
980	<	t.start();
981	<	Thread.sleep(SHORT_DELAY_MS);
980	>	pleaseInterrupt.acquireShared(0);
981	>	sync.acquire();
982	>	assertHasWaitersLocked(sync, condition, t);
983	>	sync.release();
984		t.interrupt();
985	<	t.join(SHORT_DELAY_MS);
986	<	assertFalse(t.isAlive());
985	>	assertHasWaitersUnlocked(sync, condition, t);
986	>	assertThreadBlocks(t, Thread.State.WAITING);
987	>	sync.acquire();
988	>	assertHasWaitersLocked(sync, condition, t);
989	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
990	>	condition.signal();
991	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
992	>	assertHasExclusiveQueuedThreads(sync, t);
993	>	sync.release();
994	>	awaitTermination(t);
995		}
996
997		/**
998	<	* awaitUntil is interruptible
999	<	*/
1000	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
1001	<	final Mutex sync = new Mutex();
1002	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1003	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
998	>	* await/awaitNanos/awaitUntil is interruptible
999	>	*/
1000	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
1001	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
1002	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
1003	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
1004	>	public void testInterruptible(final AwaitMethod awaitMethod) {
1005	>	final Mutex sync = new Mutex();
1006	>	final ConditionObject c = sync.newCondition();
1007	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1008	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1009		public void realRun() throws InterruptedException {
1010	<	sync.acquire(1);
1011	<	java.util.Date d = new java.util.Date();
1012	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1010	>	sync.acquire();
1011	>	assertTrue(pleaseInterrupt.releaseShared(0));
1012	>	await(c, awaitMethod);
1013		}});
1014
1015	<	t.start();
838	<	Thread.sleep(SHORT_DELAY_MS);
1015	>	pleaseInterrupt.acquireShared(0);
1016		t.interrupt();
1017	<	t.join(SHORT_DELAY_MS);
841	<	assertFalse(t.isAlive());
1017	>	awaitTermination(t);
1018		}
1019
1020		/**
1021		* signalAll wakes up all threads
1022		*/
1023	<	public void testSignalAll() throws InterruptedException {
1024	<	final Mutex sync = new Mutex();
1025	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1026	<	Thread t1 = new Thread(new CheckedRunnable() {
1023	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1024	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1025	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1026	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1027	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1028	>	final Mutex sync = new Mutex();
1029	>	final ConditionObject c = sync.newCondition();
1030	>	final BooleanLatch acquired1 = new BooleanLatch();
1031	>	final BooleanLatch acquired2 = new BooleanLatch();
1032	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1033		public void realRun() throws InterruptedException {
1034	<	sync.acquire(1);
1035	<	c.await();
1036	<	sync.release(1);
1034	>	sync.acquire();
1035	>	acquired1.releaseShared(0);
1036	>	await(c, awaitMethod);
1037	>	sync.release();
1038		}});
1039
1040	<	Thread t2 = new Thread(new CheckedRunnable() {
1040	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1041		public void realRun() throws InterruptedException {
1042	<	sync.acquire(1);
1043	<	c.await();
1044	<	sync.release(1);
1042	>	sync.acquire();
1043	>	acquired2.releaseShared(0);
1044	>	await(c, awaitMethod);
1045	>	sync.release();
1046		}});
1047
1048	<	t1.start();
1049	<	t2.start();
1050	<	Thread.sleep(SHORT_DELAY_MS);
1051	<	sync.acquire(1);
1048	>	acquired1.acquireShared(0);
1049	>	acquired2.acquireShared(0);
1050	>	sync.acquire();
1051	>	assertHasWaitersLocked(sync, c, t1, t2);
1052	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1053		c.signalAll();
1054	<	sync.release(1);
1055	<	t1.join(SHORT_DELAY_MS);
1056	<	t2.join(SHORT_DELAY_MS);
1057	<	assertFalse(t1.isAlive());
1058	<	assertFalse(t2.isAlive());
1054	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1055	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1056	>	sync.release();
1057	>	awaitTermination(t1);
1058	>	awaitTermination(t2);
1059		}
1060
876	–
1061		/**
1062		* toString indicates current state
1063		*/
1064		public void testToString() {
1065		Mutex sync = new Mutex();
1066	<	String us = sync.toString();
1067	<	assertTrue(us.indexOf("State = 0") >= 0);
1068	<	sync.acquire(1);
885	<	String ls = sync.toString();
886	<	assertTrue(ls.indexOf("State = " + Mutex.LOCKED) >= 0);
1066	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1067	>	sync.acquire();
1068	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1069		}
1070
1071		/**
1072	<	* A serialized AQS deserializes with current state
1073	<	*/
1074	<	public void testSerialization() throws Exception {
1075	<	Mutex l = new Mutex();
1076	<	l.acquire(1);
1077	<	assertTrue(l.isHeldExclusively());
1078	<
1079	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1080	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
899	<	out.writeObject(l);
900	<	out.close();
901	<
902	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
903	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
904	<	Mutex r = (Mutex) in.readObject();
905	<	assertTrue(r.isHeldExclusively());
906	<	}
1072	>	* A serialized AQS deserializes with current state, but no queued threads
1073	>	*/
1074	>	public void testSerialization() {
1075	>	Mutex sync = new Mutex();
1076	>	assertFalse(serialClone(sync).isHeldExclusively());
1077	>	sync.acquire();
1078	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1079	>	waitForQueuedThread(sync, t);
1080	>	assertTrue(sync.isHeldExclusively());
1081
1082	+	Mutex clone = serialClone(sync);
1083	+	assertTrue(clone.isHeldExclusively());
1084	+	assertHasExclusiveQueuedThreads(sync, t);
1085	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1086	+	t.interrupt();
1087	+	awaitTermination(t);
1088	+	sync.release();
1089	+	assertFalse(sync.isHeldExclusively());
1090	+	assertTrue(clone.isHeldExclusively());
1091	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1092	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1093	+	}
1094
1095		/**
1096		* tryReleaseShared setting state changes getState
#	Line 912 | Line 1098 | public class AbstractQueuedLongSynchroni
1098		public void testGetStateWithReleaseShared() {
1099		final BooleanLatch l = new BooleanLatch();
1100		assertFalse(l.isSignalled());
1101	<	l.releaseShared(0);
1101	>	assertTrue(l.releaseShared(0));
1102		assertTrue(l.isSignalled());
1103		}
1104
#	Line 922 | Line 1108 | public class AbstractQueuedLongSynchroni
1108		public void testReleaseShared() {
1109		final BooleanLatch l = new BooleanLatch();
1110		assertFalse(l.isSignalled());
1111	<	l.releaseShared(0);
1111	>	assertTrue(l.releaseShared(0));
1112		assertTrue(l.isSignalled());
1113	<	l.releaseShared(0);
1113	>	assertTrue(l.releaseShared(0));
1114		assertTrue(l.isSignalled());
1115		}
1116
1117		/**
1118		* acquireSharedInterruptibly returns after release, but not before
1119		*/
1120	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1120	>	public void testAcquireSharedInterruptibly() {
1121		final BooleanLatch l = new BooleanLatch();
1122
1123	<	Thread t = new Thread(new CheckedRunnable() {
1123	>	Thread t = newStartedThread(new CheckedRunnable() {
1124		public void realRun() throws InterruptedException {
1125		assertFalse(l.isSignalled());
1126		l.acquireSharedInterruptibly(0);
1127		assertTrue(l.isSignalled());
1128	+	l.acquireSharedInterruptibly(0);
1129	+	assertTrue(l.isSignalled());
1130		}});
1131
1132	<	t.start();
1132	>	waitForQueuedThread(l, t);
1133		assertFalse(l.isSignalled());
1134	<	Thread.sleep(SHORT_DELAY_MS);
1135	<	l.releaseShared(0);
1134	>	assertThreadBlocks(t, Thread.State.WAITING);
1135	>	assertHasSharedQueuedThreads(l, t);
1136	>	assertTrue(l.releaseShared(0));
1137		assertTrue(l.isSignalled());
1138	<	t.join();
1138	>	awaitTermination(t);
1139		}
1140
952	–
1141		/**
1142	<	* acquireSharedTimed returns after release
1142	>	* tryAcquireSharedNanos returns after release, but not before
1143		*/
1144	<	public void testAcquireSharedTimed() throws InterruptedException {
1144	>	public void testTryAcquireSharedNanos() {
1145		final BooleanLatch l = new BooleanLatch();
1146
1147	<	Thread t = new Thread(new CheckedRunnable() {
1147	>	Thread t = newStartedThread(new CheckedRunnable() {
1148		public void realRun() throws InterruptedException {
1149		assertFalse(l.isSignalled());
1150	<	long nanos = MILLISECONDS.toNanos(MEDIUM_DELAY_MS);
1150	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1151	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1152	>	assertTrue(l.isSignalled());
1153		assertTrue(l.tryAcquireSharedNanos(0, nanos));
1154		assertTrue(l.isSignalled());
1155		}});
1156
1157	<	t.start();
1157	>	waitForQueuedThread(l, t);
1158		assertFalse(l.isSignalled());
1159	<	Thread.sleep(SHORT_DELAY_MS);
1160	<	l.releaseShared(0);
1159	>	assertThreadStaysAlive(t);
1160	>	assertTrue(l.releaseShared(0));
1161		assertTrue(l.isSignalled());
1162	<	t.join();
1162	>	awaitTermination(t);
1163		}
1164
1165		/**
1166	<	* acquireSharedInterruptibly throws IE if interrupted before released
1166	>	* acquireSharedInterruptibly is interruptible
1167		*/
1168	<	public void testAcquireSharedInterruptibly_InterruptedException()
979	<	throws InterruptedException {
1168	>	public void testAcquireSharedInterruptibly_Interruptible() {
1169		final BooleanLatch l = new BooleanLatch();
1170	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1170	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1171		public void realRun() throws InterruptedException {
1172		assertFalse(l.isSignalled());
1173		l.acquireSharedInterruptibly(0);
1174		}});
1175
1176	<	t.start();
1176	>	waitForQueuedThread(l, t);
1177		assertFalse(l.isSignalled());
1178		t.interrupt();
1179	<	t.join();
1179	>	awaitTermination(t);
1180	>	assertFalse(l.isSignalled());
1181		}
1182
1183		/**
1184	<	* acquireSharedTimed throws IE if interrupted before released
1184	>	* tryAcquireSharedNanos is interruptible
1185		*/
1186	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1186	>	public void testTryAcquireSharedNanos_Interruptible() {
1187		final BooleanLatch l = new BooleanLatch();
1188	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1188	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1189		public void realRun() throws InterruptedException {
1190		assertFalse(l.isSignalled());
1191	<	long nanos = MILLISECONDS.toNanos(SMALL_DELAY_MS);
1191	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1192		l.tryAcquireSharedNanos(0, nanos);
1193		}});
1194
1195	<	t.start();
1006	<	Thread.sleep(SHORT_DELAY_MS);
1195	>	waitForQueuedThread(l, t);
1196		assertFalse(l.isSignalled());
1197		t.interrupt();
1198	<	t.join();
1198	>	awaitTermination(t);
1199	>	assertFalse(l.isSignalled());
1200		}
1201
1202		/**
1203	<	* acquireSharedTimed times out if not released before timeout
1203	>	* tryAcquireSharedNanos times out if not released before timeout
1204		*/
1205	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1205	>	public void testTryAcquireSharedNanos_Timeout() {
1206		final BooleanLatch l = new BooleanLatch();
1207	<	Thread t = new Thread(new CheckedRunnable() {
1207	>	final BooleanLatch observedQueued = new BooleanLatch();
1208	>	Thread t = newStartedThread(new CheckedRunnable() {
1209		public void realRun() throws InterruptedException {
1210		assertFalse(l.isSignalled());
1211	<	long nanos = MILLISECONDS.toNanos(SMALL_DELAY_MS);
1212	<	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1211	>	for (long millis = timeoutMillis();
1212	>	!observedQueued.isSignalled();
1213	>	millis *= 2) {
1214	>	long nanos = MILLISECONDS.toNanos(millis);
1215	>	long startTime = System.nanoTime();
1216	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1217	>	assertTrue(millisElapsedSince(startTime) >= millis);
1218	>	}
1219	>	assertFalse(l.isSignalled());
1220		}});
1221
1222	<	t.start();
1223	<	Thread.sleep(SHORT_DELAY_MS);
1222	>	waitForQueuedThread(l, t);
1223	>	observedQueued.releaseShared(0);
1224		assertFalse(l.isSignalled());
1225	<	t.join();
1225	>	awaitTermination(t);
1226	>	assertFalse(l.isSignalled());
1227	>	}
1228	>
1229	>	/**
1230	>	* awaitNanos/timed await with 0 wait times out immediately
1231	>	*/
1232	>	public void testAwait_Zero() throws InterruptedException {
1233	>	final Mutex sync = new Mutex();
1234	>	final ConditionObject c = sync.newCondition();
1235	>	sync.acquire();
1236	>	assertTrue(c.awaitNanos(0L) <= 0);
1237	>	assertFalse(c.await(0L, NANOSECONDS));
1238	>	sync.release();
1239	>	}
1240	>
1241	>	/**
1242	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1243	>	*/
1244	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1245	>	final Mutex sync = new Mutex();
1246	>	final ConditionObject c = sync.newCondition();
1247	>	sync.acquire();
1248	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1249	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1250	>	sync.release();
1251		}
1252
1253		}

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