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

Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.14 by jsr166, Mon Nov 30 08:31:09 2009 UTC vs.
Revision 1.28 by jsr166, Tue Dec 2 07:23:13 2014 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	–
9		import junit.framework.*;
10		import java.util.*;
12	–	import java.util.concurrent.*;
11		import static java.util.concurrent.TimeUnit.MILLISECONDS;
12	<	import java.util.concurrent.locks.*;
13	<	import java.io.*;
12	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
13	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer;
14	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject;
15
16		public class AbstractQueuedLongSynchronizerTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20		public static Test suite() {
21		return new TestSuite(AbstractQueuedLongSynchronizerTest.class);
22		}
23
24		/**
25	<	* A simple mutex class, adapted from the
26	<	* 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
25	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
26	>	* acquire tests exercise this as a sample user extension.
27		*/
28		static class Mutex extends AbstractQueuedLongSynchronizer {
29	<	// Use value > 32 bits for locked state
30	<	static final long LOCKED = 1 << 48;
29	>	/** An eccentric value > 32 bits for locked synchronizer state. */
30	>	static final long LOCKED = (1L << 63) | (1L << 15);
31	>
32	>	static final long UNLOCKED = 0;
33	>
34		public boolean isHeldExclusively() {
35	<	return getState() == LOCKED;
35	>	long state = getState();
36	>	assertTrue(state == UNLOCKED || state == LOCKED);
37	>	return state == LOCKED;
38		}
39
40		public boolean tryAcquire(long acquires) {
41	<	return compareAndSetState(0, LOCKED);
41	>	assertEquals(LOCKED, acquires);
42	>	return compareAndSetState(UNLOCKED, LOCKED);
43		}
44
45		public boolean tryRelease(long releases) {
46	<	if (getState() == 0) throw new IllegalMonitorStateException();
47	<	setState(0);
46	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
47	>	setState(UNLOCKED);
48		return true;
49		}
50
51	<	public AbstractQueuedLongSynchronizer.ConditionObject newCondition() { return new AbstractQueuedLongSynchronizer.ConditionObject(); }
51	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
52	>	return tryAcquireNanos(LOCKED, nanos);
53	>	}
54
55	<	}
55	>	public boolean tryAcquire() {
56	>	return tryAcquire(LOCKED);
57	>	}
58	>
59	>	public boolean tryRelease() {
60	>	return tryRelease(LOCKED);
61	>	}
62	>
63	>	public void acquire() {
64	>	acquire(LOCKED);
65	>	}
66	>
67	>	public void acquireInterruptibly() throws InterruptedException {
68	>	acquireInterruptibly(LOCKED);
69	>	}
70	>
71	>	public void release() {
72	>	release(LOCKED);
73	>	}
74
75	+	public ConditionObject newCondition() {
76	+	return new ConditionObject();
77	+	}
78	+	}
79
80		/**
81		* A simple latch class, to test shared mode.
#	Line 59 | Line 84 | public class AbstractQueuedLongSynchroni
84		public boolean isSignalled() { return getState() != 0; }
85
86		public long tryAcquireShared(long ignore) {
87	<	return isSignalled()? 1 : -1;
87	>	return isSignalled() ? 1 : -1;
88		}
89
90		public boolean tryReleaseShared(long ignore) {
#	Line 74 | Line 99 | public class AbstractQueuedLongSynchroni
99		*/
100		class InterruptibleSyncRunnable extends CheckedRunnable {
101		final Mutex sync;
102	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
102	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
103		public void realRun() throws InterruptedException {
104	<	sync.acquireInterruptibly(1);
104	>	sync.acquireInterruptibly();
105		}
106		}
107
83	–
108		/**
109		* A runnable calling acquireInterruptibly that expects to be
110		* interrupted.
111		*/
112		class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
113		final Mutex sync;
114	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
114	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
115		public void realRun() throws InterruptedException {
116	<	sync.acquireInterruptibly(1);
116	>	sync.acquireInterruptibly();
117		}
118		}
119
120	+	/** A constant to clarify calls to checking methods below. */
121	+	static final Thread[] NO_THREADS = new Thread[0];
122	+
123	+	/**
124	+	* Spin-waits until sync.isQueued(t) becomes true.
125	+	*/
126	+	void waitForQueuedThread(AbstractQueuedLongSynchronizer sync,
127	+	Thread t) {
128	+	long startTime = System.nanoTime();
129	+	while (!sync.isQueued(t)) {
130	+	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
131	+	throw new AssertionFailedError("timed out");
132	+	Thread.yield();
133	+	}
134	+	assertTrue(t.isAlive());
135	+	}
136	+
137	+	/**
138	+	* Checks that sync has exactly the given queued threads.
139	+	*/
140	+	void assertHasQueuedThreads(AbstractQueuedLongSynchronizer sync,
141	+	Thread... expected) {
142	+	Collection<Thread> actual = sync.getQueuedThreads();
143	+	assertEquals(expected.length > 0, sync.hasQueuedThreads());
144	+	assertEquals(expected.length, sync.getQueueLength());
145	+	assertEquals(expected.length, actual.size());
146	+	assertEquals(expected.length == 0, actual.isEmpty());
147	+	assertEquals(new HashSet<Thread>(actual),
148	+	new HashSet<Thread>(Arrays.asList(expected)));
149	+	}
150	+
151	+	/**
152	+	* Checks that sync has exactly the given (exclusive) queued threads.
153	+	*/
154	+	void assertHasExclusiveQueuedThreads(AbstractQueuedLongSynchronizer sync,
155	+	Thread... expected) {
156	+	assertHasQueuedThreads(sync, expected);
157	+	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
158	+	new HashSet<Thread>(sync.getQueuedThreads()));
159	+	assertEquals(0, sync.getSharedQueuedThreads().size());
160	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
161	+	}
162	+
163	+	/**
164	+	* Checks that sync has exactly the given (shared) queued threads.
165	+	*/
166	+	void assertHasSharedQueuedThreads(AbstractQueuedLongSynchronizer sync,
167	+	Thread... expected) {
168	+	assertHasQueuedThreads(sync, expected);
169	+	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
170	+	new HashSet<Thread>(sync.getQueuedThreads()));
171	+	assertEquals(0, sync.getExclusiveQueuedThreads().size());
172	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
173	+	}
174	+
175	+	/**
176	+	* Checks that condition c has exactly the given waiter threads,
177	+	* after acquiring mutex.
178	+	*/
179	+	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
180	+	Thread... threads) {
181	+	sync.acquire();
182	+	assertHasWaitersLocked(sync, c, threads);
183	+	sync.release();
184	+	}
185	+
186	+	/**
187	+	* Checks that condition c has exactly the given waiter threads.
188	+	*/
189	+	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
190	+	Thread... threads) {
191	+	assertEquals(threads.length > 0, sync.hasWaiters(c));
192	+	assertEquals(threads.length, sync.getWaitQueueLength(c));
193	+	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
194	+	assertEquals(threads.length, sync.getWaitingThreads(c).size());
195	+	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
196	+	new HashSet<Thread>(Arrays.asList(threads)));
197	+	}
198	+
199	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil };
200	+
201	+	/**
202	+	* Awaits condition using the specified AwaitMethod.
203	+	*/
204	+	void await(ConditionObject c, AwaitMethod awaitMethod)
205	+	throws InterruptedException {
206	+	long timeoutMillis = 2 * LONG_DELAY_MS;
207	+	switch (awaitMethod) {
208	+	case await:
209	+	c.await();
210	+	break;
211	+	case awaitTimed:
212	+	assertTrue(c.await(timeoutMillis, MILLISECONDS));
213	+	break;
214	+	case awaitNanos:
215	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
216	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
217	+	assertTrue(nanosRemaining > 0);
218	+	break;
219	+	case awaitUntil:
220	+	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
221	+	break;
222	+	}
223	+	}
224	+
225	+	/**
226	+	* Checks that awaiting the given condition times out (using the
227	+	* default timeout duration).
228	+	*/
229	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
230	+	long timeoutMillis = timeoutMillis();
231	+	long startTime = System.nanoTime();
232	+	try {
233	+	switch (awaitMethod) {
234	+	case awaitTimed:
235	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
236	+	break;
237	+	case awaitNanos:
238	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
239	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
240	+	assertTrue(nanosRemaining <= 0);
241	+	break;
242	+	case awaitUntil:
243	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
244	+	break;
245	+	default:
246	+	throw new UnsupportedOperationException();
247	+	}
248	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
249	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
250	+	}
251	+
252		/**
253		* isHeldExclusively is false upon construction
254		*/
255		public void testIsHeldExclusively() {
256	<	Mutex rl = new Mutex();
257	<	assertFalse(rl.isHeldExclusively());
256	>	Mutex sync = new Mutex();
257	>	assertFalse(sync.isHeldExclusively());
258		}
259
260		/**
261		* acquiring released sync succeeds
262		*/
263		public void testAcquire() {
264	<	Mutex rl = new Mutex();
265	<	rl.acquire(1);
266	<	assertTrue(rl.isHeldExclusively());
267	<	rl.release(1);
268	<	assertFalse(rl.isHeldExclusively());
264	>	Mutex sync = new Mutex();
265	>	sync.acquire();
266	>	assertTrue(sync.isHeldExclusively());
267	>	sync.release();
268	>	assertFalse(sync.isHeldExclusively());
269		}
270
271		/**
272	<	* tryAcquire on an released sync succeeds
272	>	* tryAcquire on a released sync succeeds
273		*/
274		public void testTryAcquire() {
275	<	Mutex rl = new Mutex();
276	<	assertTrue(rl.tryAcquire(1));
277	<	assertTrue(rl.isHeldExclusively());
278	<	rl.release(1);
275	>	Mutex sync = new Mutex();
276	>	assertTrue(sync.tryAcquire());
277	>	assertTrue(sync.isHeldExclusively());
278	>	sync.release();
279	>	assertFalse(sync.isHeldExclusively());
280		}
281
282		/**
283		* hasQueuedThreads reports whether there are waiting threads
284		*/
285	<	public void testhasQueuedThreads() throws InterruptedException {
285	>	public void testHasQueuedThreads() {
286		final Mutex sync = new Mutex();
130	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
287		assertFalse(sync.hasQueuedThreads());
288	<	sync.acquire(1);
289	<	t1.start();
290	<	Thread.sleep(SHORT_DELAY_MS);
288	>	sync.acquire();
289	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
290	>	waitForQueuedThread(sync, t1);
291		assertTrue(sync.hasQueuedThreads());
292	<	t2.start();
293	<	Thread.sleep(SHORT_DELAY_MS);
292	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
293	>	waitForQueuedThread(sync, t2);
294		assertTrue(sync.hasQueuedThreads());
295		t1.interrupt();
296	<	Thread.sleep(SHORT_DELAY_MS);
296	>	awaitTermination(t1);
297		assertTrue(sync.hasQueuedThreads());
298	<	sync.release(1);
299	<	Thread.sleep(SHORT_DELAY_MS);
298	>	sync.release();
299	>	awaitTermination(t2);
300		assertFalse(sync.hasQueuedThreads());
146	–	t1.join();
147	–	t2.join();
301		}
302
303		/**
304	<	* isQueued(null) throws NPE
304	>	* isQueued(null) throws NullPointerException
305		*/
306		public void testIsQueuedNPE() {
307		final Mutex sync = new Mutex();
#	Line 159 | Line 312 | public class AbstractQueuedLongSynchroni
312		}
313
314		/**
315	<	* isQueued reports whether a thread is queued.
315	>	* isQueued reports whether a thread is queued
316		*/
317	<	public void testIsQueued() throws InterruptedException {
317	>	public void testIsQueued() {
318		final Mutex sync = new Mutex();
319		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
320		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
321		assertFalse(sync.isQueued(t1));
322		assertFalse(sync.isQueued(t2));
323	<	sync.acquire(1);
323	>	sync.acquire();
324		t1.start();
325	<	Thread.sleep(SHORT_DELAY_MS);
325	>	waitForQueuedThread(sync, t1);
326		assertTrue(sync.isQueued(t1));
327	+	assertFalse(sync.isQueued(t2));
328		t2.start();
329	<	Thread.sleep(SHORT_DELAY_MS);
329	>	waitForQueuedThread(sync, t2);
330		assertTrue(sync.isQueued(t1));
331		assertTrue(sync.isQueued(t2));
332		t1.interrupt();
333	<	Thread.sleep(SHORT_DELAY_MS);
333	>	awaitTermination(t1);
334		assertFalse(sync.isQueued(t1));
335		assertTrue(sync.isQueued(t2));
336	<	sync.release(1);
337	<	Thread.sleep(SHORT_DELAY_MS);
336	>	sync.release();
337	>	awaitTermination(t2);
338		assertFalse(sync.isQueued(t1));
185	–	Thread.sleep(SHORT_DELAY_MS);
339		assertFalse(sync.isQueued(t2));
187	–	t1.join();
188	–	t2.join();
340		}
341
342		/**
343		* getFirstQueuedThread returns first waiting thread or null if none
344		*/
345	<	public void testGetFirstQueuedThread() throws InterruptedException {
345	>	public void testGetFirstQueuedThread() {
346		final Mutex sync = new Mutex();
196	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
347		assertNull(sync.getFirstQueuedThread());
348	<	sync.acquire(1);
349	<	t1.start();
350	<	Thread.sleep(SHORT_DELAY_MS);
348	>	sync.acquire();
349	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
350	>	waitForQueuedThread(sync, t1);
351		assertEquals(t1, sync.getFirstQueuedThread());
352	<	t2.start();
353	<	Thread.sleep(SHORT_DELAY_MS);
352	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
353	>	waitForQueuedThread(sync, t2);
354		assertEquals(t1, sync.getFirstQueuedThread());
355		t1.interrupt();
356	<	Thread.sleep(SHORT_DELAY_MS);
208	<	Thread.sleep(SHORT_DELAY_MS);
356	>	awaitTermination(t1);
357		assertEquals(t2, sync.getFirstQueuedThread());
358	<	sync.release(1);
359	<	Thread.sleep(SHORT_DELAY_MS);
358	>	sync.release();
359	>	awaitTermination(t2);
360		assertNull(sync.getFirstQueuedThread());
213	–	t1.join();
214	–	t2.join();
361		}
362
217	–
363		/**
364		* hasContended reports false if no thread has ever blocked, else true
365		*/
366	<	public void testHasContended() throws InterruptedException {
366	>	public void testHasContended() {
367		final Mutex sync = new Mutex();
223	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
368		assertFalse(sync.hasContended());
369	<	sync.acquire(1);
370	<	t1.start();
371	<	Thread.sleep(SHORT_DELAY_MS);
369	>	sync.acquire();
370	>	assertFalse(sync.hasContended());
371	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
372	>	waitForQueuedThread(sync, t1);
373		assertTrue(sync.hasContended());
374	<	t2.start();
375	<	Thread.sleep(SHORT_DELAY_MS);
374	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
375	>	waitForQueuedThread(sync, t2);
376		assertTrue(sync.hasContended());
377		t1.interrupt();
378	<	Thread.sleep(SHORT_DELAY_MS);
378	>	awaitTermination(t1);
379		assertTrue(sync.hasContended());
380	<	sync.release(1);
381	<	Thread.sleep(SHORT_DELAY_MS);
380	>	sync.release();
381	>	awaitTermination(t2);
382		assertTrue(sync.hasContended());
239	–	t1.join();
240	–	t2.join();
383		}
384
385		/**
386	<	* getQueuedThreads includes waiting threads
386	>	* getQueuedThreads returns all waiting threads
387		*/
388	<	public void testGetQueuedThreads() throws InterruptedException {
388	>	public void testGetQueuedThreads() {
389		final Mutex sync = new Mutex();
390		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
391		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
392	<	assertTrue(sync.getQueuedThreads().isEmpty());
393	<	sync.acquire(1);
394	<	assertTrue(sync.getQueuedThreads().isEmpty());
392	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
393	>	sync.acquire();
394	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
395		t1.start();
396	<	Thread.sleep(SHORT_DELAY_MS);
396	>	waitForQueuedThread(sync, t1);
397	>	assertHasExclusiveQueuedThreads(sync, t1);
398		assertTrue(sync.getQueuedThreads().contains(t1));
399	+	assertFalse(sync.getQueuedThreads().contains(t2));
400		t2.start();
401	<	Thread.sleep(SHORT_DELAY_MS);
401	>	waitForQueuedThread(sync, t2);
402	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
403		assertTrue(sync.getQueuedThreads().contains(t1));
404		assertTrue(sync.getQueuedThreads().contains(t2));
405		t1.interrupt();
406	<	Thread.sleep(SHORT_DELAY_MS);
407	<	assertFalse(sync.getQueuedThreads().contains(t1));
408	<	assertTrue(sync.getQueuedThreads().contains(t2));
409	<	sync.release(1);
410	<	Thread.sleep(SHORT_DELAY_MS);
266	<	assertTrue(sync.getQueuedThreads().isEmpty());
267	<	t1.join();
268	<	t2.join();
406	>	awaitTermination(t1);
407	>	assertHasExclusiveQueuedThreads(sync, t2);
408	>	sync.release();
409	>	awaitTermination(t2);
410	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
411		}
412
413		/**
414	<	* getExclusiveQueuedThreads includes waiting threads
414	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
415		*/
416	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
416	>	public void testGetExclusiveQueuedThreads() {
417		final Mutex sync = new Mutex();
418		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
419		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
420	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
421	<	sync.acquire(1);
422	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
420	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
421	>	sync.acquire();
422	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
423		t1.start();
424	<	Thread.sleep(SHORT_DELAY_MS);
424	>	waitForQueuedThread(sync, t1);
425	>	assertHasExclusiveQueuedThreads(sync, t1);
426		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
427	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
428		t2.start();
429	<	Thread.sleep(SHORT_DELAY_MS);
429	>	waitForQueuedThread(sync, t2);
430	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
431		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
432		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
433		t1.interrupt();
434	<	Thread.sleep(SHORT_DELAY_MS);
435	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
436	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
437	<	sync.release(1);
438	<	Thread.sleep(SHORT_DELAY_MS);
294	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	<	t1.join();
296	<	t2.join();
434	>	awaitTermination(t1);
435	>	assertHasExclusiveQueuedThreads(sync, t2);
436	>	sync.release();
437	>	awaitTermination(t2);
438	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
439		}
440
441		/**
442		* getSharedQueuedThreads does not include exclusively waiting threads
443		*/
444	<	public void testGetSharedQueuedThreads() throws InterruptedException {
444	>	public void testGetSharedQueuedThreads_Exclusive() {
445		final Mutex sync = new Mutex();
304	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
446		assertTrue(sync.getSharedQueuedThreads().isEmpty());
447	<	sync.acquire(1);
447	>	sync.acquire();
448		assertTrue(sync.getSharedQueuedThreads().isEmpty());
449	<	t1.start();
450	<	Thread.sleep(SHORT_DELAY_MS);
449	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
450	>	waitForQueuedThread(sync, t1);
451		assertTrue(sync.getSharedQueuedThreads().isEmpty());
452	<	t2.start();
453	<	Thread.sleep(SHORT_DELAY_MS);
452	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
453	>	waitForQueuedThread(sync, t2);
454		assertTrue(sync.getSharedQueuedThreads().isEmpty());
455		t1.interrupt();
456	<	Thread.sleep(SHORT_DELAY_MS);
456	>	awaitTermination(t1);
457		assertTrue(sync.getSharedQueuedThreads().isEmpty());
458	<	sync.release(1);
459	<	Thread.sleep(SHORT_DELAY_MS);
458	>	sync.release();
459	>	awaitTermination(t2);
460		assertTrue(sync.getSharedQueuedThreads().isEmpty());
321	–	t1.join();
322	–	t2.join();
461		}
462
463		/**
464	<	* tryAcquireNanos is interruptible.
464	>	* getSharedQueuedThreads returns all shared waiting threads
465	>	*/
466	>	public void testGetSharedQueuedThreads_Shared() {
467	>	final BooleanLatch l = new BooleanLatch();
468	>	assertHasSharedQueuedThreads(l, NO_THREADS);
469	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
470	>	public void realRun() throws InterruptedException {
471	>	l.acquireSharedInterruptibly(0);
472	>	}});
473	>	waitForQueuedThread(l, t1);
474	>	assertHasSharedQueuedThreads(l, t1);
475	>	Thread t2 = newStartedThread(new CheckedRunnable() {
476	>	public void realRun() throws InterruptedException {
477	>	l.acquireSharedInterruptibly(0);
478	>	}});
479	>	waitForQueuedThread(l, t2);
480	>	assertHasSharedQueuedThreads(l, t1, t2);
481	>	t1.interrupt();
482	>	awaitTermination(t1);
483	>	assertHasSharedQueuedThreads(l, t2);
484	>	assertTrue(l.releaseShared(0));
485	>	awaitTermination(t2);
486	>	assertHasSharedQueuedThreads(l, NO_THREADS);
487	>	}
488	>
489	>	/**
490	>	* tryAcquireNanos is interruptible
491		*/
492	<	public void testInterruptedException2() throws InterruptedException {
492	>	public void testTryAcquireNanos_Interruptible() {
493		final Mutex sync = new Mutex();
494	<	sync.acquire(1);
495	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
494	>	sync.acquire();
495	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
496		public void realRun() throws InterruptedException {
497	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000L * 1000L);
497	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
498		}});
499
500	<	t.start();
337	<	Thread.sleep(SHORT_DELAY_MS);
500	>	waitForQueuedThread(sync, t);
501		t.interrupt();
502	<	t.join();
502	>	awaitTermination(t);
503		}
504
342	–
505		/**
506	<	* TryAcquire on exclusively held sync fails
506	>	* tryAcquire on exclusively held sync fails
507		*/
508	<	public void testTryAcquireWhenSynced() throws InterruptedException {
508	>	public void testTryAcquireWhenSynced() {
509		final Mutex sync = new Mutex();
510	<	sync.acquire(1);
511	<	Thread t = new Thread(new CheckedRunnable() {
510	>	sync.acquire();
511	>	Thread t = newStartedThread(new CheckedRunnable() {
512		public void realRun() {
513	<	threadAssertFalse(sync.tryAcquire(1));
513	>	assertFalse(sync.tryAcquire());
514		}});
515
516	<	t.start();
517	<	t.join();
356	<	sync.release(1);
516	>	awaitTermination(t);
517	>	sync.release();
518		}
519
520		/**
521		* tryAcquireNanos on an exclusively held sync times out
522		*/
523	<	public void testAcquireNanos_Timeout() throws InterruptedException {
523	>	public void testAcquireNanos_Timeout() {
524		final Mutex sync = new Mutex();
525	<	sync.acquire(1);
526	<	Thread t = new Thread(new CheckedRunnable() {
525	>	sync.acquire();
526	>	Thread t = newStartedThread(new CheckedRunnable() {
527		public void realRun() throws InterruptedException {
528	<	threadAssertFalse(sync.tryAcquireNanos(1, SHORT_DELAY_MS * 1000L * 1000L));
528	>	long startTime = System.nanoTime();
529	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
530	>	assertFalse(sync.tryAcquireNanos(nanos));
531	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
532		}});
533
534	<	t.start();
535	<	t.join();
372	<	sync.release(1);
534	>	awaitTermination(t);
535	>	sync.release();
536		}
537
375	–
538		/**
539		* getState is true when acquired and false when not
540		*/
541	<	public void testGetState() throws InterruptedException {
541	>	public void testGetState() {
542		final Mutex sync = new Mutex();
543	<	sync.acquire(1);
543	>	sync.acquire();
544		assertTrue(sync.isHeldExclusively());
545	<	sync.release(1);
545	>	sync.release();
546		assertFalse(sync.isHeldExclusively());
547	<	Thread t = new Thread(new CheckedRunnable() {
547	>
548	>	final BooleanLatch acquired = new BooleanLatch();
549	>	final BooleanLatch done = new BooleanLatch();
550	>	Thread t = newStartedThread(new CheckedRunnable() {
551		public void realRun() throws InterruptedException {
552	<	sync.acquire(1);
553	<	Thread.sleep(SMALL_DELAY_MS);
554	<	sync.release(1);
552	>	sync.acquire();
553	>	assertTrue(acquired.releaseShared(0));
554	>	done.acquireShared(0);
555	>	sync.release();
556		}});
557
558	<	t.start();
393	<	Thread.sleep(SHORT_DELAY_MS);
558	>	acquired.acquireShared(0);
559		assertTrue(sync.isHeldExclusively());
560	<	t.join();
560	>	assertTrue(done.releaseShared(0));
561	>	awaitTermination(t);
562		assertFalse(sync.isHeldExclusively());
563		}
564
399	–
400	–	/**
401	–	* acquireInterruptibly is interruptible.
402	–	*/
403	–	public void testAcquireInterruptibly1() throws InterruptedException {
404	–	final Mutex sync = new Mutex();
405	–	sync.acquire(1);
406	–	Thread t = new Thread(new InterruptedSyncRunnable(sync));
407	–	t.start();
408	–	Thread.sleep(SHORT_DELAY_MS);
409	–	t.interrupt();
410	–	Thread.sleep(SHORT_DELAY_MS);
411	–	sync.release(1);
412	–	t.join();
413	–	}
414	–
565		/**
566		* acquireInterruptibly succeeds when released, else is interruptible
567		*/
568	<	public void testAcquireInterruptibly2() throws InterruptedException {
568	>	public void testAcquireInterruptibly() throws InterruptedException {
569		final Mutex sync = new Mutex();
570	<	sync.acquireInterruptibly(1);
571	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
572	<	t.start();
573	<	Thread.sleep(SHORT_DELAY_MS);
570	>	final BooleanLatch threadStarted = new BooleanLatch();
571	>	sync.acquireInterruptibly();
572	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
573	>	public void realRun() throws InterruptedException {
574	>	assertTrue(threadStarted.releaseShared(0));
575	>	sync.acquireInterruptibly();
576	>	}});
577	>
578	>	threadStarted.acquireShared(0);
579	>	waitForQueuedThread(sync, t);
580		t.interrupt();
581	+	awaitTermination(t);
582		assertTrue(sync.isHeldExclusively());
426	–	t.join();
583		}
584
585		/**
#	Line 431 | Line 587 | public class AbstractQueuedLongSynchroni
587		*/
588		public void testOwns() {
589		final Mutex sync = new Mutex();
590	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
590	>	final ConditionObject c = sync.newCondition();
591		final Mutex sync2 = new Mutex();
592		assertTrue(sync.owns(c));
593		assertFalse(sync2.owns(c));
#	Line 440 | Line 596 | public class AbstractQueuedLongSynchroni
596		/**
597		* Calling await without holding sync throws IllegalMonitorStateException
598		*/
599	<	public void testAwait_IllegalMonitor() throws InterruptedException {
599	>	public void testAwait_IMSE() {
600		final Mutex sync = new Mutex();
601	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
602	<	try {
603	<	c.await();
604	<	shouldThrow();
605	<	} catch (IllegalMonitorStateException success) {}
601	>	final ConditionObject c = sync.newCondition();
602	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
603	>	long startTime = System.nanoTime();
604	>	try {
605	>	await(c, awaitMethod);
606	>	shouldThrow();
607	>	} catch (IllegalMonitorStateException success) {
608	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
609	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
610	>	}
611		}
612
613		/**
614		* Calling signal without holding sync throws IllegalMonitorStateException
615		*/
616	<	public void testSignal_IllegalMonitor() throws InterruptedException {
616	>	public void testSignal_IMSE() {
617		final Mutex sync = new Mutex();
618	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
618	>	final ConditionObject c = sync.newCondition();
619		try {
620		c.signal();
621		shouldThrow();
622		} catch (IllegalMonitorStateException success) {}
623	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
624		}
625
626		/**
627	<	* awaitNanos without a signal times out
466	<	*/
467	<	public void testAwaitNanos_Timeout() throws InterruptedException {
468	<	final Mutex sync = new Mutex();
469	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
470	<	sync.acquire(1);
471	<	long t = c.awaitNanos(100);
472	<	assertTrue(t <= 0);
473	<	sync.release(1);
474	<	}
475	<
476	<	/**
477	<	*  Timed await without a signal times out
627	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
628		*/
629	<	public void testAwait_Timeout() throws InterruptedException {
629	>	public void testSignalAll_IMSE() {
630		final Mutex sync = new Mutex();
631	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
632	<	sync.acquire(1);
633	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
634	<	sync.release(1);
631	>	final ConditionObject c = sync.newCondition();
632	>	try {
633	>	c.signalAll();
634	>	shouldThrow();
635	>	} catch (IllegalMonitorStateException success) {}
636		}
637
638		/**
639	<	* awaitUntil without a signal times out
639	>	* await/awaitNanos/awaitUntil without a signal times out
640		*/
641	<	public void testAwaitUntil_Timeout() throws InterruptedException {
641	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
642	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
643	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
644	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
645		final Mutex sync = new Mutex();
646	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
647	<	sync.acquire(1);
648	<	java.util.Date d = new java.util.Date();
649	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
496	<	sync.release(1);
646	>	final ConditionObject c = sync.newCondition();
647	>	sync.acquire();
648	>	assertAwaitTimesOut(c, awaitMethod);
649	>	sync.release();
650		}
651
652		/**
653	<	* await returns when signalled
653	>	* await/awaitNanos/awaitUntil returns when signalled
654		*/
655	<	public void testAwait() throws InterruptedException {
655	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
656	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
657	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
658	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
659	>	public void testSignal(final AwaitMethod awaitMethod) {
660		final Mutex sync = new Mutex();
661	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
662	<	Thread t = new Thread(new CheckedRunnable() {
661	>	final ConditionObject c = sync.newCondition();
662	>	final BooleanLatch acquired = new BooleanLatch();
663	>	Thread t = newStartedThread(new CheckedRunnable() {
664		public void realRun() throws InterruptedException {
665	<	sync.acquire(1);
666	<	c.await();
667	<	sync.release(1);
665	>	sync.acquire();
666	>	assertTrue(acquired.releaseShared(0));
667	>	await(c, awaitMethod);
668	>	sync.release();
669		}});
670
671	<	t.start();
672	<	Thread.sleep(SHORT_DELAY_MS);
673	<	sync.acquire(1);
671	>	acquired.acquireShared(0);
672	>	sync.acquire();
673	>	assertHasWaitersLocked(sync, c, t);
674	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
675		c.signal();
676	<	sync.release(1);
677	<	t.join(SHORT_DELAY_MS);
678	<	assertFalse(t.isAlive());
676	>	assertHasWaitersLocked(sync, c, NO_THREADS);
677	>	assertHasExclusiveQueuedThreads(sync, t);
678	>	sync.release();
679	>	awaitTermination(t);
680		}
681
521	–
522	–
682		/**
683	<	* hasWaiters throws NPE if null
683	>	* hasWaiters(null) throws NullPointerException
684		*/
685		public void testHasWaitersNPE() {
686		final Mutex sync = new Mutex();
#	Line 532 | Line 691 | public class AbstractQueuedLongSynchroni
691		}
692
693		/**
694	<	* getWaitQueueLength throws NPE if null
694	>	* getWaitQueueLength(null) throws NullPointerException
695		*/
696		public void testGetWaitQueueLengthNPE() {
697		final Mutex sync = new Mutex();
#	Line 542 | Line 701 | public class AbstractQueuedLongSynchroni
701		} catch (NullPointerException success) {}
702		}
703
545	–
704		/**
705		* getWaitingThreads throws NPE if null
706		*/
#	Line 554 | Line 712 | public class AbstractQueuedLongSynchroni
712		} catch (NullPointerException success) {}
713		}
714
557	–
715		/**
716	<	* hasWaiters throws IAE if not owned
716	>	* hasWaiters throws IllegalArgumentException if not owned
717		*/
718		public void testHasWaitersIAE() {
719		final Mutex sync = new Mutex();
720	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
720	>	final ConditionObject c = sync.newCondition();
721		final Mutex sync2 = new Mutex();
722		try {
723		sync2.hasWaiters(c);
724		shouldThrow();
725		} catch (IllegalArgumentException success) {}
726	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
727		}
728
729		/**
730	<	* hasWaiters throws IMSE if not synced
730	>	* hasWaiters throws IllegalMonitorStateException if not synced
731		*/
732		public void testHasWaitersIMSE() {
733		final Mutex sync = new Mutex();
734	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
734	>	final ConditionObject c = sync.newCondition();
735		try {
736		sync.hasWaiters(c);
737		shouldThrow();
738		} catch (IllegalMonitorStateException success) {}
739	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
740		}
741
583	–
742		/**
743	<	* getWaitQueueLength throws IAE if not owned
743	>	* getWaitQueueLength throws IllegalArgumentException if not owned
744		*/
745		public void testGetWaitQueueLengthIAE() {
746		final Mutex sync = new Mutex();
747	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
747	>	final ConditionObject c = sync.newCondition();
748		final Mutex sync2 = new Mutex();
749		try {
750		sync2.getWaitQueueLength(c);
751		shouldThrow();
752		} catch (IllegalArgumentException success) {}
753	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
754		}
755
756		/**
757	<	* getWaitQueueLength throws IMSE if not synced
757	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
758		*/
759		public void testGetWaitQueueLengthIMSE() {
760		final Mutex sync = new Mutex();
761	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
761	>	final ConditionObject c = sync.newCondition();
762		try {
763		sync.getWaitQueueLength(c);
764		shouldThrow();
765		} catch (IllegalMonitorStateException success) {}
766	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
767		}
768
609	–
769		/**
770	<	* getWaitingThreads throws IAE if not owned
770	>	* getWaitingThreads throws IllegalArgumentException if not owned
771		*/
772		public void testGetWaitingThreadsIAE() {
773		final Mutex sync = new Mutex();
774	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
774	>	final ConditionObject c = sync.newCondition();
775		final Mutex sync2 = new Mutex();
776		try {
777		sync2.getWaitingThreads(c);
778		shouldThrow();
779		} catch (IllegalArgumentException success) {}
780	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
781		}
782
783		/**
784	<	* getWaitingThreads throws IMSE if not synced
784	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
785		*/
786		public void testGetWaitingThreadsIMSE() {
787		final Mutex sync = new Mutex();
788	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
788	>	final ConditionObject c = sync.newCondition();
789		try {
790		sync.getWaitingThreads(c);
791		shouldThrow();
792		} catch (IllegalMonitorStateException success) {}
793	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
794		}
795
635	–
636	–
796		/**
797		* hasWaiters returns true when a thread is waiting, else false
798		*/
799	<	public void testHasWaiters() throws InterruptedException {
799	>	public void testHasWaiters() {
800		final Mutex sync = new Mutex();
801	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
802	<	Thread t = new Thread(new CheckedRunnable() {
801	>	final ConditionObject c = sync.newCondition();
802	>	final BooleanLatch acquired = new BooleanLatch();
803	>	Thread t = newStartedThread(new CheckedRunnable() {
804		public void realRun() throws InterruptedException {
805	<	sync.acquire(1);
806	<	threadAssertFalse(sync.hasWaiters(c));
807	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
805	>	sync.acquire();
806	>	assertHasWaitersLocked(sync, c, NO_THREADS);
807	>	assertFalse(sync.hasWaiters(c));
808	>	assertTrue(acquired.releaseShared(0));
809		c.await();
810	<	sync.release(1);
810	>	sync.release();
811		}});
812
813	<	t.start();
814	<	Thread.sleep(SHORT_DELAY_MS);
815	<	sync.acquire(1);
813	>	acquired.acquireShared(0);
814	>	sync.acquire();
815	>	assertHasWaitersLocked(sync, c, t);
816	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
817		assertTrue(sync.hasWaiters(c));
656	–	assertEquals(1, sync.getWaitQueueLength(c));
818		c.signal();
819	<	sync.release(1);
820	<	Thread.sleep(SHORT_DELAY_MS);
660	<	sync.acquire(1);
819	>	assertHasWaitersLocked(sync, c, NO_THREADS);
820	>	assertHasExclusiveQueuedThreads(sync, t);
821		assertFalse(sync.hasWaiters(c));
822	<	assertEquals(0, sync.getWaitQueueLength(c));
823	<	sync.release(1);
824	<	t.join(SHORT_DELAY_MS);
825	<	assertFalse(t.isAlive());
822	>	sync.release();
823	>
824	>	awaitTermination(t);
825	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
826		}
827
828		/**
829		* getWaitQueueLength returns number of waiting threads
830		*/
831	<	public void testGetWaitQueueLength() throws InterruptedException {
831	>	public void testGetWaitQueueLength() {
832		final Mutex sync = new Mutex();
833	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
834	<	Thread t1 = new Thread(new CheckedRunnable() {
833	>	final ConditionObject c = sync.newCondition();
834	>	final BooleanLatch acquired1 = new BooleanLatch();
835	>	final BooleanLatch acquired2 = new BooleanLatch();
836	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
837		public void realRun() throws InterruptedException {
838	<	sync.acquire(1);
839	<	threadAssertFalse(sync.hasWaiters(c));
840	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
838	>	sync.acquire();
839	>	assertHasWaitersLocked(sync, c, NO_THREADS);
840	>	assertEquals(0, sync.getWaitQueueLength(c));
841	>	assertTrue(acquired1.releaseShared(0));
842		c.await();
843	<	sync.release(1);
843	>	sync.release();
844		}});
845	+	acquired1.acquireShared(0);
846	+	sync.acquire();
847	+	assertHasWaitersLocked(sync, c, t1);
848	+	assertEquals(1, sync.getWaitQueueLength(c));
849	+	sync.release();
850
851	<	Thread t2 = new Thread(new CheckedRunnable() {
851	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
852		public void realRun() throws InterruptedException {
853	<	sync.acquire(1);
854	<	threadAssertTrue(sync.hasWaiters(c));
855	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
853	>	sync.acquire();
854	>	assertHasWaitersLocked(sync, c, t1);
855	>	assertEquals(1, sync.getWaitQueueLength(c));
856	>	assertTrue(acquired2.releaseShared(0));
857		c.await();
858	<	sync.release(1);
858	>	sync.release();
859		}});
860	<
861	<	t1.start();
862	<	Thread.sleep(SHORT_DELAY_MS);
863	<	t2.start();
695	<	Thread.sleep(SHORT_DELAY_MS);
696	<	sync.acquire(1);
697	<	assertTrue(sync.hasWaiters(c));
860	>	acquired2.acquireShared(0);
861	>	sync.acquire();
862	>	assertHasWaitersLocked(sync, c, t1, t2);
863	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
864		assertEquals(2, sync.getWaitQueueLength(c));
865		c.signalAll();
866	<	sync.release(1);
867	<	Thread.sleep(SHORT_DELAY_MS);
702	<	sync.acquire(1);
703	<	assertFalse(sync.hasWaiters(c));
866	>	assertHasWaitersLocked(sync, c, NO_THREADS);
867	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
868		assertEquals(0, sync.getWaitQueueLength(c));
869	<	sync.release(1);
870	<	t1.join(SHORT_DELAY_MS);
871	<	t2.join(SHORT_DELAY_MS);
872	<	assertFalse(t1.isAlive());
873	<	assertFalse(t2.isAlive());
869	>	sync.release();
870	>
871	>	awaitTermination(t1);
872	>	awaitTermination(t2);
873	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
874		}
875
876		/**
877		* getWaitingThreads returns only and all waiting threads
878		*/
879	<	public void testGetWaitingThreads() throws InterruptedException {
879	>	public void testGetWaitingThreads() {
880		final Mutex sync = new Mutex();
881	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
882	<	Thread t1 = new Thread(new CheckedRunnable() {
881	>	final ConditionObject c = sync.newCondition();
882	>	final BooleanLatch acquired1 = new BooleanLatch();
883	>	final BooleanLatch acquired2 = new BooleanLatch();
884	>	final Thread t1 = new Thread(new CheckedRunnable() {
885		public void realRun() throws InterruptedException {
886	<	sync.acquire(1);
887	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
886	>	sync.acquire();
887	>	assertHasWaitersLocked(sync, c, NO_THREADS);
888	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
889	>	assertTrue(acquired1.releaseShared(0));
890		c.await();
891	<	sync.release(1);
891	>	sync.release();
892		}});
893
894	<	Thread t2 = new Thread(new CheckedRunnable() {
894	>	final Thread t2 = new Thread(new CheckedRunnable() {
895		public void realRun() throws InterruptedException {
896	<	sync.acquire(1);
897	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
896	>	sync.acquire();
897	>	assertHasWaitersLocked(sync, c, t1);
898	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
899	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
900	>	assertEquals(1, sync.getWaitingThreads(c).size());
901	>	assertTrue(acquired2.releaseShared(0));
902		c.await();
903	<	sync.release(1);
903	>	sync.release();
904		}});
905
906	<	sync.acquire(1);
907	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
908	<	sync.release(1);
909	<	t1.start();
910	<	Thread.sleep(SHORT_DELAY_MS);
911	<	t2.start();
912	<	Thread.sleep(SHORT_DELAY_MS);
913	<	sync.acquire(1);
914	<	assertTrue(sync.hasWaiters(c));
915	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
916	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
917	<	c.signalAll();
918	<	sync.release(1);
919	<	Thread.sleep(SHORT_DELAY_MS);
920	<	sync.acquire(1);
921	<	assertFalse(sync.hasWaiters(c));
922	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
751	<	sync.release(1);
752	<	t1.join(SHORT_DELAY_MS);
753	<	t2.join(SHORT_DELAY_MS);
754	<	assertFalse(t1.isAlive());
755	<	assertFalse(t2.isAlive());
756	<	}
906	>	sync.acquire();
907	>	assertHasWaitersLocked(sync, c, NO_THREADS);
908	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
909	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
910	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
911	>	assertEquals(0, sync.getWaitingThreads(c).size());
912	>	sync.release();
913	>
914	>	t1.start();
915	>	acquired1.acquireShared(0);
916	>	sync.acquire();
917	>	assertHasWaitersLocked(sync, c, t1);
918	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
919	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
920	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
921	>	assertEquals(1, sync.getWaitingThreads(c).size());
922	>	sync.release();
923
924	+	t2.start();
925	+	acquired2.acquireShared(0);
926	+	sync.acquire();
927	+	assertHasWaitersLocked(sync, c, t1, t2);
928	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
929	+	assertTrue(sync.getWaitingThreads(c).contains(t1));
930	+	assertTrue(sync.getWaitingThreads(c).contains(t2));
931	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
932	+	assertEquals(2, sync.getWaitingThreads(c).size());
933	+	c.signalAll();
934	+	assertHasWaitersLocked(sync, c, NO_THREADS);
935	+	assertHasExclusiveQueuedThreads(sync, t1, t2);
936	+	assertFalse(sync.getWaitingThreads(c).contains(t1));
937	+	assertFalse(sync.getWaitingThreads(c).contains(t2));
938	+	assertTrue(sync.getWaitingThreads(c).isEmpty());
939	+	assertEquals(0, sync.getWaitingThreads(c).size());
940	+	sync.release();
941
942	+	awaitTermination(t1);
943	+	awaitTermination(t2);
944	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
945	+	}
946
947		/**
948	<	* awaitUninterruptibly doesn't abort on interrupt
948	>	* awaitUninterruptibly is uninterruptible
949		*/
950	<	public void testAwaitUninterruptibly() throws InterruptedException {
950	>	public void testAwaitUninterruptibly() {
951		final Mutex sync = new Mutex();
952	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
953	<	Thread t = new Thread(new CheckedRunnable() {
952	>	final ConditionObject c = sync.newCondition();
953	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
954	>	Thread t = newStartedThread(new CheckedRunnable() {
955		public void realRun() {
956	<	sync.acquire(1);
956	>	sync.acquire();
957	>	assertTrue(pleaseInterrupt.releaseShared(0));
958		c.awaitUninterruptibly();
959	<	sync.release(1);
959	>	assertTrue(Thread.interrupted());
960	>	assertHasWaitersLocked(sync, c, NO_THREADS);
961	>	sync.release();
962		}});
963
964	<	t.start();
965	<	Thread.sleep(SHORT_DELAY_MS);
964	>	pleaseInterrupt.acquireShared(0);
965	>	sync.acquire();
966	>	assertHasWaitersLocked(sync, c, t);
967	>	sync.release();
968		t.interrupt();
969	<	sync.acquire(1);
969	>	assertHasWaitersUnlocked(sync, c, t);
970	>	assertThreadStaysAlive(t);
971	>	sync.acquire();
972	>	assertHasWaitersLocked(sync, c, t);
973	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
974		c.signal();
975	<	sync.release(1);
976	<	t.join(SHORT_DELAY_MS);
977	<	assertFalse(t.isAlive());
978	<	}
782	<
783	<	/**
784	<	* await is interruptible
785	<	*/
786	<	public void testAwait_Interrupt() throws InterruptedException {
787	<	final Mutex sync = new Mutex();
788	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
789	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
790	<	public void realRun() throws InterruptedException {
791	<	sync.acquire(1);
792	<	c.await();
793	<	}});
794	<
795	<	t.start();
796	<	Thread.sleep(SHORT_DELAY_MS);
797	<	t.interrupt();
798	<	t.join(SHORT_DELAY_MS);
799	<	assertFalse(t.isAlive());
975	>	assertHasWaitersLocked(sync, c, NO_THREADS);
976	>	assertHasExclusiveQueuedThreads(sync, t);
977	>	sync.release();
978	>	awaitTermination(t);
979		}
980
981		/**
982	<	* awaitNanos is interruptible
982	>	* await/awaitNanos/awaitUntil is interruptible
983		*/
984	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
984	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
985	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
986	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
987	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
988	>	public void testInterruptible(final AwaitMethod awaitMethod) {
989		final Mutex sync = new Mutex();
990	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
991	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
990	>	final ConditionObject c = sync.newCondition();
991	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
992	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
993		public void realRun() throws InterruptedException {
994	<	sync.acquire(1);
995	<	c.awaitNanos(LONG_DELAY_MS * 1000L * 1000L);
994	>	sync.acquire();
995	>	assertTrue(pleaseInterrupt.releaseShared(0));
996	>	await(c, awaitMethod);
997		}});
998
999	<	t.start();
815	<	Thread.sleep(SHORT_DELAY_MS);
999	>	pleaseInterrupt.acquireShared(0);
1000		t.interrupt();
1001	<	t.join(SHORT_DELAY_MS);
818	<	assertFalse(t.isAlive());
819	<	}
820	<
821	<	/**
822	<	* awaitUntil is interruptible
823	<	*/
824	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
825	<	final Mutex sync = new Mutex();
826	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
827	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
828	<	public void realRun() throws InterruptedException {
829	<	sync.acquire(1);
830	<	java.util.Date d = new java.util.Date();
831	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
832	<	}});
833	<
834	<	t.start();
835	<	Thread.sleep(SHORT_DELAY_MS);
836	<	t.interrupt();
837	<	t.join(SHORT_DELAY_MS);
838	<	assertFalse(t.isAlive());
1001	>	awaitTermination(t);
1002		}
1003
1004		/**
1005		* signalAll wakes up all threads
1006		*/
1007	<	public void testSignalAll() throws InterruptedException {
1008	<	final Mutex sync = new Mutex();
1009	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1010	<	Thread t1 = new Thread(new CheckedRunnable() {
1007	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1008	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1009	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1010	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1011	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1012	>	final Mutex sync = new Mutex();
1013	>	final ConditionObject c = sync.newCondition();
1014	>	final BooleanLatch acquired1 = new BooleanLatch();
1015	>	final BooleanLatch acquired2 = new BooleanLatch();
1016	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1017		public void realRun() throws InterruptedException {
1018	<	sync.acquire(1);
1019	<	c.await();
1020	<	sync.release(1);
1018	>	sync.acquire();
1019	>	acquired1.releaseShared(0);
1020	>	await(c, awaitMethod);
1021	>	sync.release();
1022		}});
1023
1024	<	Thread t2 = new Thread(new CheckedRunnable() {
1024	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1025		public void realRun() throws InterruptedException {
1026	<	sync.acquire(1);
1027	<	c.await();
1028	<	sync.release(1);
1026	>	sync.acquire();
1027	>	acquired2.releaseShared(0);
1028	>	await(c, awaitMethod);
1029	>	sync.release();
1030		}});
1031
1032	<	t1.start();
1033	<	t2.start();
1034	<	Thread.sleep(SHORT_DELAY_MS);
1035	<	sync.acquire(1);
1032	>	acquired1.acquireShared(0);
1033	>	acquired2.acquireShared(0);
1034	>	sync.acquire();
1035	>	assertHasWaitersLocked(sync, c, t1, t2);
1036	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1037		c.signalAll();
1038	<	sync.release(1);
1039	<	t1.join(SHORT_DELAY_MS);
1040	<	t2.join(SHORT_DELAY_MS);
1041	<	assertFalse(t1.isAlive());
1042	<	assertFalse(t2.isAlive());
1038	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1039	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1040	>	sync.release();
1041	>	awaitTermination(t1);
1042	>	awaitTermination(t2);
1043		}
1044
873	–
1045		/**
1046		* toString indicates current state
1047		*/
1048		public void testToString() {
1049		Mutex sync = new Mutex();
1050	<	String us = sync.toString();
1051	<	assertTrue(us.indexOf("State = 0") >= 0);
1052	<	sync.acquire(1);
882	<	String ls = sync.toString();
883	<	assertTrue(ls.indexOf("State = " + Mutex.LOCKED) >= 0);
1050	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1051	>	sync.acquire();
1052	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1053		}
1054
1055		/**
1056	<	* A serialized AQS deserializes with current state
1057	<	*/
1058	<	public void testSerialization() throws Exception {
1059	<	Mutex l = new Mutex();
1060	<	l.acquire(1);
1061	<	assertTrue(l.isHeldExclusively());
1062	<
1063	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1064	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
896	<	out.writeObject(l);
897	<	out.close();
898	<
899	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
900	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
901	<	Mutex r = (Mutex) in.readObject();
902	<	assertTrue(r.isHeldExclusively());
903	<	}
1056	>	* A serialized AQS deserializes with current state, but no queued threads
1057	>	*/
1058	>	public void testSerialization() {
1059	>	Mutex sync = new Mutex();
1060	>	assertFalse(serialClone(sync).isHeldExclusively());
1061	>	sync.acquire();
1062	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1063	>	waitForQueuedThread(sync, t);
1064	>	assertTrue(sync.isHeldExclusively());
1065
1066	+	Mutex clone = serialClone(sync);
1067	+	assertTrue(clone.isHeldExclusively());
1068	+	assertHasExclusiveQueuedThreads(sync, t);
1069	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1070	+	t.interrupt();
1071	+	awaitTermination(t);
1072	+	sync.release();
1073	+	assertFalse(sync.isHeldExclusively());
1074	+	assertTrue(clone.isHeldExclusively());
1075	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1076	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1077	+	}
1078
1079		/**
1080		* tryReleaseShared setting state changes getState
#	Line 909 | Line 1082 | public class AbstractQueuedLongSynchroni
1082		public void testGetStateWithReleaseShared() {
1083		final BooleanLatch l = new BooleanLatch();
1084		assertFalse(l.isSignalled());
1085	<	l.releaseShared(0);
1085	>	assertTrue(l.releaseShared(0));
1086		assertTrue(l.isSignalled());
1087		}
1088
#	Line 919 | Line 1092 | public class AbstractQueuedLongSynchroni
1092		public void testReleaseShared() {
1093		final BooleanLatch l = new BooleanLatch();
1094		assertFalse(l.isSignalled());
1095	<	l.releaseShared(0);
1095	>	assertTrue(l.releaseShared(0));
1096		assertTrue(l.isSignalled());
1097	<	l.releaseShared(0);
1097	>	assertTrue(l.releaseShared(0));
1098		assertTrue(l.isSignalled());
1099		}
1100
1101		/**
1102		* acquireSharedInterruptibly returns after release, but not before
1103		*/
1104	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1104	>	public void testAcquireSharedInterruptibly() {
1105		final BooleanLatch l = new BooleanLatch();
1106
1107	<	Thread t = new Thread(new CheckedRunnable() {
1107	>	Thread t = newStartedThread(new CheckedRunnable() {
1108		public void realRun() throws InterruptedException {
1109	<	threadAssertFalse(l.isSignalled());
1109	>	assertFalse(l.isSignalled());
1110		l.acquireSharedInterruptibly(0);
1111	<	threadAssertTrue(l.isSignalled());
1111	>	assertTrue(l.isSignalled());
1112	>	l.acquireSharedInterruptibly(0);
1113	>	assertTrue(l.isSignalled());
1114		}});
1115
1116	<	t.start();
1116	>	waitForQueuedThread(l, t);
1117		assertFalse(l.isSignalled());
1118	<	Thread.sleep(SHORT_DELAY_MS);
1119	<	l.releaseShared(0);
1118	>	assertThreadStaysAlive(t);
1119	>	assertHasSharedQueuedThreads(l, t);
1120	>	assertTrue(l.releaseShared(0));
1121		assertTrue(l.isSignalled());
1122	<	t.join();
1122	>	awaitTermination(t);
1123		}
1124
949	–
1125		/**
1126	<	* acquireSharedTimed returns after release
1126	>	* tryAcquireSharedNanos returns after release, but not before
1127		*/
1128	<	public void testAsquireSharedTimed() throws InterruptedException {
1128	>	public void testTryAcquireSharedNanos() {
1129		final BooleanLatch l = new BooleanLatch();
1130
1131	<	Thread t = new Thread(new CheckedRunnable() {
1131	>	Thread t = newStartedThread(new CheckedRunnable() {
1132		public void realRun() throws InterruptedException {
1133	<	threadAssertFalse(l.isSignalled());
1134	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS * 1000L * 1000L));
1135	<	threadAssertTrue(l.isSignalled());
1133	>	assertFalse(l.isSignalled());
1134	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1135	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1136	>	assertTrue(l.isSignalled());
1137	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1138	>	assertTrue(l.isSignalled());
1139		}});
1140
1141	<	t.start();
1141	>	waitForQueuedThread(l, t);
1142		assertFalse(l.isSignalled());
1143	<	Thread.sleep(SHORT_DELAY_MS);
1144	<	l.releaseShared(0);
1143	>	assertThreadStaysAlive(t);
1144	>	assertTrue(l.releaseShared(0));
1145		assertTrue(l.isSignalled());
1146	<	t.join();
1146	>	awaitTermination(t);
1147		}
1148
1149		/**
1150	<	* acquireSharedInterruptibly throws IE if interrupted before released
1150	>	* acquireSharedInterruptibly is interruptible
1151		*/
1152	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1152	>	public void testAcquireSharedInterruptibly_Interruptible() {
1153		final BooleanLatch l = new BooleanLatch();
1154	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1154	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1155		public void realRun() throws InterruptedException {
1156	<	threadAssertFalse(l.isSignalled());
1156	>	assertFalse(l.isSignalled());
1157		l.acquireSharedInterruptibly(0);
1158		}});
1159
1160	<	t.start();
1160	>	waitForQueuedThread(l, t);
1161		assertFalse(l.isSignalled());
1162		t.interrupt();
1163	<	t.join();
1163	>	awaitTermination(t);
1164	>	assertFalse(l.isSignalled());
1165		}
1166
1167		/**
1168	<	* acquireSharedTimed throws IE if interrupted before released
1168	>	* tryAcquireSharedNanos is interruptible
1169		*/
1170	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1170	>	public void testTryAcquireSharedNanos_Interruptible() {
1171		final BooleanLatch l = new BooleanLatch();
1172	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1172	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1173		public void realRun() throws InterruptedException {
1174	<	threadAssertFalse(l.isSignalled());
1175	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS * 1000L * 1000L);
1174	>	assertFalse(l.isSignalled());
1175	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1176	>	l.tryAcquireSharedNanos(0, nanos);
1177		}});
1178
1179	<	t.start();
1000	<	Thread.sleep(SHORT_DELAY_MS);
1179	>	waitForQueuedThread(l, t);
1180		assertFalse(l.isSignalled());
1181		t.interrupt();
1182	<	t.join();
1182	>	awaitTermination(t);
1183	>	assertFalse(l.isSignalled());
1184		}
1185
1186		/**
1187	<	* acquireSharedTimed times out if not released before timeout
1187	>	* tryAcquireSharedNanos times out if not released before timeout
1188		*/
1189	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1189	>	public void testTryAcquireSharedNanos_Timeout() {
1190		final BooleanLatch l = new BooleanLatch();
1191	<	Thread t = new Thread(new CheckedRunnable() {
1191	>	final BooleanLatch observedQueued = new BooleanLatch();
1192	>	final long timeoutMillis = timeoutMillis();
1193	>	Thread t = newStartedThread(new CheckedRunnable() {
1194		public void realRun() throws InterruptedException {
1195	<	threadAssertFalse(l.isSignalled());
1196	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS * 1000L * 1000L));
1195	>	assertFalse(l.isSignalled());
1196	>	for (long millis = timeoutMillis();
1197	>	!observedQueued.isSignalled();
1198	>	millis *= 2) {
1199	>	long nanos = MILLISECONDS.toNanos(millis);
1200	>	long startTime = System.nanoTime();
1201	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1202	>	assertTrue(millisElapsedSince(startTime) >= millis);
1203	>	}
1204	>	assertFalse(l.isSignalled());
1205		}});
1206
1207	<	t.start();
1208	<	Thread.sleep(SHORT_DELAY_MS);
1207	>	waitForQueuedThread(l, t);
1208	>	observedQueued.releaseShared(0);
1209	>	assertFalse(l.isSignalled());
1210	>	awaitTermination(t);
1211		assertFalse(l.isSignalled());
1212	<	t.join();
1212	>	}
1213	>
1214	>	/**
1215	>	* awaitNanos/timed await with 0 wait times out immediately
1216	>	*/
1217	>	public void testAwait_Zero() throws InterruptedException {
1218	>	final Mutex sync = new Mutex();
1219	>	final ConditionObject c = sync.newCondition();
1220	>	sync.acquire();
1221	>	assertTrue(c.awaitNanos(0L) <= 0);
1222	>	assertFalse(c.await(0L, NANOSECONDS));
1223	>	sync.release();
1224	>	}
1225	>
1226	>	/**
1227	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1228	>	*/
1229	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1230	>	final Mutex sync = new Mutex();
1231	>	final ConditionObject c = sync.newCondition();
1232	>	sync.acquire();
1233	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1234	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1235	>	sync.release();
1236		}
1237
1238		}

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