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

Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.12 by jsr166, Sat Nov 21 02:33:20 2009 UTC vs.
Revision 1.30 by jsr166, Wed Dec 31 19:23:56 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	–
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	>	junit.textui.TestRunner.run(suite());
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() { 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 59 | Line 90 | public class AbstractQueuedLongSynchroni
90		public boolean isSignalled() { return getState() != 0; }
91
92		public long tryAcquireShared(long ignore) {
93	<	return isSignalled()? 1 : -1;
93	>	return isSignalled() ? 1 : -1;
94		}
95
96		public boolean tryReleaseShared(long ignore) {
#	Line 74 | 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
83	–
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	+	}
229	+	}
230	+
231	+	/**
232	+	* Checks that awaiting the given condition times out (using the
233	+	* default timeout duration).
234	+	*/
235	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
236	+	long timeoutMillis = timeoutMillis();
237	+	long startTime = System.nanoTime();
238	+	try {
239	+	switch (awaitMethod) {
240	+	case awaitTimed:
241	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
242	+	break;
243	+	case awaitNanos:
244	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
245	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
246	+	assertTrue(nanosRemaining <= 0);
247	+	break;
248	+	case awaitUntil:
249	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
250	+	break;
251	+	default:
252	+	throw new UnsupportedOperationException();
253	+	}
254	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
255	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
256	+	}
257	+
258		/**
259		* isHeldExclusively is false upon construction
260		*/
261		public void testIsHeldExclusively() {
262	<	Mutex rl = new Mutex();
263	<	assertFalse(rl.isHeldExclusively());
262	>	Mutex sync = new Mutex();
263	>	assertFalse(sync.isHeldExclusively());
264		}
265
266		/**
267		* acquiring released sync succeeds
268		*/
269		public void testAcquire() {
270	<	Mutex rl = new Mutex();
271	<	rl.acquire(1);
272	<	assertTrue(rl.isHeldExclusively());
273	<	rl.release(1);
274	<	assertFalse(rl.isHeldExclusively());
270	>	Mutex sync = new Mutex();
271	>	sync.acquire();
272	>	assertTrue(sync.isHeldExclusively());
273	>	sync.release();
274	>	assertFalse(sync.isHeldExclusively());
275		}
276
277		/**
278	<	* tryAcquire on an released sync succeeds
278	>	* tryAcquire on a released sync succeeds
279		*/
280		public void testTryAcquire() {
281	<	Mutex rl = new Mutex();
282	<	assertTrue(rl.tryAcquire(1));
283	<	assertTrue(rl.isHeldExclusively());
284	<	rl.release(1);
281	>	Mutex sync = new Mutex();
282	>	assertTrue(sync.tryAcquire());
283	>	assertTrue(sync.isHeldExclusively());
284	>	sync.release();
285	>	assertFalse(sync.isHeldExclusively());
286		}
287
288		/**
289		* hasQueuedThreads reports whether there are waiting threads
290		*/
291	<	public void testhasQueuedThreads() throws InterruptedException {
291	>	public void testHasQueuedThreads() {
292		final Mutex sync = new Mutex();
130	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
293		assertFalse(sync.hasQueuedThreads());
294	<	sync.acquire(1);
295	<	t1.start();
296	<	Thread.sleep(SHORT_DELAY_MS);
294	>	sync.acquire();
295	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
296	>	waitForQueuedThread(sync, t1);
297		assertTrue(sync.hasQueuedThreads());
298	<	t2.start();
299	<	Thread.sleep(SHORT_DELAY_MS);
298	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
299	>	waitForQueuedThread(sync, t2);
300		assertTrue(sync.hasQueuedThreads());
301		t1.interrupt();
302	<	Thread.sleep(SHORT_DELAY_MS);
302	>	awaitTermination(t1);
303		assertTrue(sync.hasQueuedThreads());
304	<	sync.release(1);
305	<	Thread.sleep(SHORT_DELAY_MS);
304	>	sync.release();
305	>	awaitTermination(t2);
306		assertFalse(sync.hasQueuedThreads());
146	–	t1.join();
147	–	t2.join();
307		}
308
309		/**
310	<	* isQueued(null) throws NPE
310	>	* isQueued(null) throws NullPointerException
311		*/
312		public void testIsQueuedNPE() {
313		final Mutex sync = new Mutex();
#	Line 159 | Line 318 | public class AbstractQueuedLongSynchroni
318		}
319
320		/**
321	<	* isQueued reports whether a thread is queued.
321	>	* isQueued reports whether a thread is queued
322		*/
323	<	public void testIsQueued() throws InterruptedException {
323	>	public void testIsQueued() {
324		final Mutex sync = new Mutex();
325		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
326		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
327		assertFalse(sync.isQueued(t1));
328		assertFalse(sync.isQueued(t2));
329	<	sync.acquire(1);
329	>	sync.acquire();
330		t1.start();
331	<	Thread.sleep(SHORT_DELAY_MS);
331	>	waitForQueuedThread(sync, t1);
332		assertTrue(sync.isQueued(t1));
333	+	assertFalse(sync.isQueued(t2));
334		t2.start();
335	<	Thread.sleep(SHORT_DELAY_MS);
335	>	waitForQueuedThread(sync, t2);
336		assertTrue(sync.isQueued(t1));
337		assertTrue(sync.isQueued(t2));
338		t1.interrupt();
339	<	Thread.sleep(SHORT_DELAY_MS);
339	>	awaitTermination(t1);
340		assertFalse(sync.isQueued(t1));
341		assertTrue(sync.isQueued(t2));
342	<	sync.release(1);
343	<	Thread.sleep(SHORT_DELAY_MS);
342	>	sync.release();
343	>	awaitTermination(t2);
344		assertFalse(sync.isQueued(t1));
185	–	Thread.sleep(SHORT_DELAY_MS);
345		assertFalse(sync.isQueued(t2));
187	–	t1.join();
188	–	t2.join();
346		}
347
348		/**
349		* getFirstQueuedThread returns first waiting thread or null if none
350		*/
351	<	public void testGetFirstQueuedThread() throws InterruptedException {
351	>	public void testGetFirstQueuedThread() {
352		final Mutex sync = new Mutex();
196	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
353		assertNull(sync.getFirstQueuedThread());
354	<	sync.acquire(1);
355	<	t1.start();
356	<	Thread.sleep(SHORT_DELAY_MS);
354	>	sync.acquire();
355	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
356	>	waitForQueuedThread(sync, t1);
357		assertEquals(t1, sync.getFirstQueuedThread());
358	<	t2.start();
359	<	Thread.sleep(SHORT_DELAY_MS);
358	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
359	>	waitForQueuedThread(sync, t2);
360		assertEquals(t1, sync.getFirstQueuedThread());
361		t1.interrupt();
362	<	Thread.sleep(SHORT_DELAY_MS);
208	<	Thread.sleep(SHORT_DELAY_MS);
362	>	awaitTermination(t1);
363		assertEquals(t2, sync.getFirstQueuedThread());
364	<	sync.release(1);
365	<	Thread.sleep(SHORT_DELAY_MS);
364	>	sync.release();
365	>	awaitTermination(t2);
366		assertNull(sync.getFirstQueuedThread());
213	–	t1.join();
214	–	t2.join();
367		}
368
217	–
369		/**
370		* hasContended reports false if no thread has ever blocked, else true
371		*/
372	<	public void testHasContended() throws InterruptedException {
372	>	public void testHasContended() {
373		final Mutex sync = new Mutex();
223	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
374		assertFalse(sync.hasContended());
375	<	sync.acquire(1);
376	<	t1.start();
377	<	Thread.sleep(SHORT_DELAY_MS);
375	>	sync.acquire();
376	>	assertFalse(sync.hasContended());
377	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
378	>	waitForQueuedThread(sync, t1);
379		assertTrue(sync.hasContended());
380	<	t2.start();
381	<	Thread.sleep(SHORT_DELAY_MS);
380	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
381	>	waitForQueuedThread(sync, t2);
382		assertTrue(sync.hasContended());
383		t1.interrupt();
384	<	Thread.sleep(SHORT_DELAY_MS);
384	>	awaitTermination(t1);
385		assertTrue(sync.hasContended());
386	<	sync.release(1);
387	<	Thread.sleep(SHORT_DELAY_MS);
386	>	sync.release();
387	>	awaitTermination(t2);
388		assertTrue(sync.hasContended());
239	–	t1.join();
240	–	t2.join();
389		}
390
391		/**
392	<	* getQueuedThreads includes waiting threads
392	>	* getQueuedThreads returns all waiting threads
393		*/
394	<	public void testGetQueuedThreads() throws InterruptedException {
394	>	public void testGetQueuedThreads() {
395		final Mutex sync = new Mutex();
396		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
397		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
398	<	assertTrue(sync.getQueuedThreads().isEmpty());
399	<	sync.acquire(1);
400	<	assertTrue(sync.getQueuedThreads().isEmpty());
398	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
399	>	sync.acquire();
400	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
401		t1.start();
402	<	Thread.sleep(SHORT_DELAY_MS);
402	>	waitForQueuedThread(sync, t1);
403	>	assertHasExclusiveQueuedThreads(sync, t1);
404		assertTrue(sync.getQueuedThreads().contains(t1));
405	+	assertFalse(sync.getQueuedThreads().contains(t2));
406		t2.start();
407	<	Thread.sleep(SHORT_DELAY_MS);
407	>	waitForQueuedThread(sync, t2);
408	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
409		assertTrue(sync.getQueuedThreads().contains(t1));
410		assertTrue(sync.getQueuedThreads().contains(t2));
411		t1.interrupt();
412	<	Thread.sleep(SHORT_DELAY_MS);
413	<	assertFalse(sync.getQueuedThreads().contains(t1));
414	<	assertTrue(sync.getQueuedThreads().contains(t2));
415	<	sync.release(1);
416	<	Thread.sleep(SHORT_DELAY_MS);
266	<	assertTrue(sync.getQueuedThreads().isEmpty());
267	<	t1.join();
268	<	t2.join();
412	>	awaitTermination(t1);
413	>	assertHasExclusiveQueuedThreads(sync, t2);
414	>	sync.release();
415	>	awaitTermination(t2);
416	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
417		}
418
419		/**
420	<	* getExclusiveQueuedThreads includes waiting threads
420	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
421		*/
422	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
422	>	public void testGetExclusiveQueuedThreads() {
423		final Mutex sync = new Mutex();
424		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
425		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
426	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
427	<	sync.acquire(1);
428	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
426	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
427	>	sync.acquire();
428	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
429		t1.start();
430	<	Thread.sleep(SHORT_DELAY_MS);
430	>	waitForQueuedThread(sync, t1);
431	>	assertHasExclusiveQueuedThreads(sync, t1);
432		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
433	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
434		t2.start();
435	<	Thread.sleep(SHORT_DELAY_MS);
435	>	waitForQueuedThread(sync, t2);
436	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
437		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
438		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
439		t1.interrupt();
440	<	Thread.sleep(SHORT_DELAY_MS);
441	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
442	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
443	<	sync.release(1);
444	<	Thread.sleep(SHORT_DELAY_MS);
294	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	<	t1.join();
296	<	t2.join();
440	>	awaitTermination(t1);
441	>	assertHasExclusiveQueuedThreads(sync, t2);
442	>	sync.release();
443	>	awaitTermination(t2);
444	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
445		}
446
447		/**
448		* getSharedQueuedThreads does not include exclusively waiting threads
449		*/
450	<	public void testGetSharedQueuedThreads() throws InterruptedException {
450	>	public void testGetSharedQueuedThreads_Exclusive() {
451		final Mutex sync = new Mutex();
304	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
452		assertTrue(sync.getSharedQueuedThreads().isEmpty());
453	<	sync.acquire(1);
453	>	sync.acquire();
454		assertTrue(sync.getSharedQueuedThreads().isEmpty());
455	<	t1.start();
456	<	Thread.sleep(SHORT_DELAY_MS);
455	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
456	>	waitForQueuedThread(sync, t1);
457		assertTrue(sync.getSharedQueuedThreads().isEmpty());
458	<	t2.start();
459	<	Thread.sleep(SHORT_DELAY_MS);
458	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
459	>	waitForQueuedThread(sync, t2);
460		assertTrue(sync.getSharedQueuedThreads().isEmpty());
461		t1.interrupt();
462	<	Thread.sleep(SHORT_DELAY_MS);
462	>	awaitTermination(t1);
463		assertTrue(sync.getSharedQueuedThreads().isEmpty());
464	<	sync.release(1);
465	<	Thread.sleep(SHORT_DELAY_MS);
464	>	sync.release();
465	>	awaitTermination(t2);
466		assertTrue(sync.getSharedQueuedThreads().isEmpty());
321	–	t1.join();
322	–	t2.join();
467		}
468
469		/**
470	<	* tryAcquireNanos is interruptible.
470	>	* getSharedQueuedThreads returns all shared waiting threads
471	>	*/
472	>	public void testGetSharedQueuedThreads_Shared() {
473	>	final BooleanLatch l = new BooleanLatch();
474	>	assertHasSharedQueuedThreads(l, NO_THREADS);
475	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
476	>	public void realRun() throws InterruptedException {
477	>	l.acquireSharedInterruptibly(0);
478	>	}});
479	>	waitForQueuedThread(l, t1);
480	>	assertHasSharedQueuedThreads(l, t1);
481	>	Thread t2 = newStartedThread(new CheckedRunnable() {
482	>	public void realRun() throws InterruptedException {
483	>	l.acquireSharedInterruptibly(0);
484	>	}});
485	>	waitForQueuedThread(l, t2);
486	>	assertHasSharedQueuedThreads(l, t1, t2);
487	>	t1.interrupt();
488	>	awaitTermination(t1);
489	>	assertHasSharedQueuedThreads(l, t2);
490	>	assertTrue(l.releaseShared(0));
491	>	awaitTermination(t2);
492	>	assertHasSharedQueuedThreads(l, NO_THREADS);
493	>	}
494	>
495	>	/**
496	>	* tryAcquireNanos is interruptible
497		*/
498	<	public void testInterruptedException2() throws InterruptedException {
498	>	public void testTryAcquireNanos_Interruptible() {
499		final Mutex sync = new Mutex();
500	<	sync.acquire(1);
501	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
500	>	sync.acquire();
501	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
502		public void realRun() throws InterruptedException {
503	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
503	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
504		}});
505
506	<	t.start();
506	>	waitForQueuedThread(sync, t);
507		t.interrupt();
508	<	t.join();
508	>	awaitTermination(t);
509		}
510
341	–
511		/**
512	<	* TryAcquire on exclusively held sync fails
512	>	* tryAcquire on exclusively held sync fails
513		*/
514	<	public void testTryAcquireWhenSynced() throws InterruptedException {
514	>	public void testTryAcquireWhenSynced() {
515		final Mutex sync = new Mutex();
516	<	sync.acquire(1);
517	<	Thread t = new Thread(new CheckedRunnable() {
516	>	sync.acquire();
517	>	Thread t = newStartedThread(new CheckedRunnable() {
518		public void realRun() {
519	<	threadAssertFalse(sync.tryAcquire(1));
519	>	assertFalse(sync.tryAcquire());
520		}});
521
522	<	t.start();
523	<	t.join();
355	<	sync.release(1);
522	>	awaitTermination(t);
523	>	sync.release();
524		}
525
526		/**
527		* tryAcquireNanos on an exclusively held sync times out
528		*/
529	<	public void testAcquireNanos_Timeout() throws InterruptedException {
529	>	public void testAcquireNanos_Timeout() {
530		final Mutex sync = new Mutex();
531	<	sync.acquire(1);
532	<	Thread t = new Thread(new CheckedRunnable() {
531	>	sync.acquire();
532	>	Thread t = newStartedThread(new CheckedRunnable() {
533		public void realRun() throws InterruptedException {
534	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
534	>	long startTime = System.nanoTime();
535	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
536	>	assertFalse(sync.tryAcquireNanos(nanos));
537	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
538		}});
539
540	<	t.start();
541	<	t.join();
371	<	sync.release(1);
540	>	awaitTermination(t);
541	>	sync.release();
542		}
543
374	–
544		/**
545		* getState is true when acquired and false when not
546		*/
547	<	public void testGetState() throws InterruptedException {
547	>	public void testGetState() {
548		final Mutex sync = new Mutex();
549	<	sync.acquire(1);
549	>	sync.acquire();
550		assertTrue(sync.isHeldExclusively());
551	<	sync.release(1);
551	>	sync.release();
552		assertFalse(sync.isHeldExclusively());
553	<	Thread t = new Thread(new CheckedRunnable() {
553	>
554	>	final BooleanLatch acquired = new BooleanLatch();
555	>	final BooleanLatch done = new BooleanLatch();
556	>	Thread t = newStartedThread(new CheckedRunnable() {
557		public void realRun() throws InterruptedException {
558	<	sync.acquire(1);
559	<	Thread.sleep(SMALL_DELAY_MS);
560	<	sync.release(1);
558	>	sync.acquire();
559	>	assertTrue(acquired.releaseShared(0));
560	>	done.acquireShared(0);
561	>	sync.release();
562		}});
563
564	<	t.start();
392	<	Thread.sleep(SHORT_DELAY_MS);
564	>	acquired.acquireShared(0);
565		assertTrue(sync.isHeldExclusively());
566	<	t.join();
566	>	assertTrue(done.releaseShared(0));
567	>	awaitTermination(t);
568		assertFalse(sync.isHeldExclusively());
569		}
570
398	–
399	–	/**
400	–	* acquireInterruptibly is interruptible.
401	–	*/
402	–	public void testAcquireInterruptibly1() throws InterruptedException {
403	–	final Mutex sync = new Mutex();
404	–	sync.acquire(1);
405	–	Thread t = new Thread(new InterruptedSyncRunnable(sync));
406	–	t.start();
407	–	Thread.sleep(SHORT_DELAY_MS);
408	–	t.interrupt();
409	–	Thread.sleep(SHORT_DELAY_MS);
410	–	sync.release(1);
411	–	t.join();
412	–	}
413	–
571		/**
572		* acquireInterruptibly succeeds when released, else is interruptible
573		*/
574	<	public void testAcquireInterruptibly2() throws InterruptedException {
574	>	public void testAcquireInterruptibly() throws InterruptedException {
575		final Mutex sync = new Mutex();
576	<	sync.acquireInterruptibly(1);
577	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
578	<	t.start();
576	>	final BooleanLatch threadStarted = new BooleanLatch();
577	>	sync.acquireInterruptibly();
578	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
579	>	public void realRun() throws InterruptedException {
580	>	assertTrue(threadStarted.releaseShared(0));
581	>	sync.acquireInterruptibly();
582	>	}});
583	>
584	>	threadStarted.acquireShared(0);
585	>	waitForQueuedThread(sync, t);
586		t.interrupt();
587	+	awaitTermination(t);
588		assertTrue(sync.isHeldExclusively());
424	–	t.join();
589		}
590
591		/**
#	Line 429 | Line 593 | public class AbstractQueuedLongSynchroni
593		*/
594		public void testOwns() {
595		final Mutex sync = new Mutex();
596	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
596	>	final ConditionObject c = sync.newCondition();
597		final Mutex sync2 = new Mutex();
598		assertTrue(sync.owns(c));
599		assertFalse(sync2.owns(c));
#	Line 438 | Line 602 | public class AbstractQueuedLongSynchroni
602		/**
603		* Calling await without holding sync throws IllegalMonitorStateException
604		*/
605	<	public void testAwait_IllegalMonitor() throws InterruptedException {
605	>	public void testAwait_IMSE() {
606		final Mutex sync = new Mutex();
607	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
608	<	try {
609	<	c.await();
610	<	shouldThrow();
611	<	} catch (IllegalMonitorStateException success) {}
607	>	final ConditionObject c = sync.newCondition();
608	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
609	>	long startTime = System.nanoTime();
610	>	try {
611	>	await(c, awaitMethod);
612	>	shouldThrow();
613	>	} catch (IllegalMonitorStateException success) {
614	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
615	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
616	>	}
617		}
618
619		/**
620		* Calling signal without holding sync throws IllegalMonitorStateException
621		*/
622	<	public void testSignal_IllegalMonitor() throws InterruptedException {
622	>	public void testSignal_IMSE() {
623		final Mutex sync = new Mutex();
624	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
624	>	final ConditionObject c = sync.newCondition();
625		try {
626		c.signal();
627		shouldThrow();
628		} catch (IllegalMonitorStateException success) {}
629	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
630		}
631
632		/**
633	<	* awaitNanos without a signal times out
633	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
634		*/
635	<	public void testAwaitNanos_Timeout() throws InterruptedException {
635	>	public void testSignalAll_IMSE() {
636		final Mutex sync = new Mutex();
637	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
638	<	sync.acquire(1);
639	<	long t = c.awaitNanos(100);
640	<	assertTrue(t <= 0);
641	<	sync.release(1);
472	<	}
473	<
474	<	/**
475	<	*  Timed await without a signal times out
476	<	*/
477	<	public void testAwait_Timeout() throws InterruptedException {
478	<	final Mutex sync = new Mutex();
479	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
480	<	sync.acquire(1);
481	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
482	<	sync.release(1);
637	>	final ConditionObject c = sync.newCondition();
638	>	try {
639	>	c.signalAll();
640	>	shouldThrow();
641	>	} catch (IllegalMonitorStateException success) {}
642		}
643
644		/**
645	<	* awaitUntil without a signal times out
645	>	* await/awaitNanos/awaitUntil without a signal times out
646		*/
647	<	public void testAwaitUntil_Timeout() throws InterruptedException {
647	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
648	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
649	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
650	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
651		final Mutex sync = new Mutex();
652	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
653	<	sync.acquire(1);
654	<	java.util.Date d = new java.util.Date();
655	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
494	<	sync.release(1);
652	>	final ConditionObject c = sync.newCondition();
653	>	sync.acquire();
654	>	assertAwaitTimesOut(c, awaitMethod);
655	>	sync.release();
656		}
657
658		/**
659	<	* await returns when signalled
659	>	* await/awaitNanos/awaitUntil returns when signalled
660		*/
661	<	public void testAwait() throws InterruptedException {
661	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
662	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
663	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
664	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
665	>	public void testSignal(final AwaitMethod awaitMethod) {
666		final Mutex sync = new Mutex();
667	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
668	<	Thread t = new Thread(new CheckedRunnable() {
667	>	final ConditionObject c = sync.newCondition();
668	>	final BooleanLatch acquired = new BooleanLatch();
669	>	Thread t = newStartedThread(new CheckedRunnable() {
670		public void realRun() throws InterruptedException {
671	<	sync.acquire(1);
672	<	c.await();
673	<	sync.release(1);
671	>	sync.acquire();
672	>	assertTrue(acquired.releaseShared(0));
673	>	await(c, awaitMethod);
674	>	sync.release();
675		}});
676
677	<	t.start();
678	<	Thread.sleep(SHORT_DELAY_MS);
679	<	sync.acquire(1);
677	>	acquired.acquireShared(0);
678	>	sync.acquire();
679	>	assertHasWaitersLocked(sync, c, t);
680	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
681		c.signal();
682	<	sync.release(1);
683	<	t.join(SHORT_DELAY_MS);
684	<	assertFalse(t.isAlive());
682	>	assertHasWaitersLocked(sync, c, NO_THREADS);
683	>	assertHasExclusiveQueuedThreads(sync, t);
684	>	sync.release();
685	>	awaitTermination(t);
686		}
687
519	–
520	–
688		/**
689	<	* hasWaiters throws NPE if null
689	>	* hasWaiters(null) throws NullPointerException
690		*/
691		public void testHasWaitersNPE() {
692		final Mutex sync = new Mutex();
#	Line 530 | Line 697 | public class AbstractQueuedLongSynchroni
697		}
698
699		/**
700	<	* getWaitQueueLength throws NPE if null
700	>	* getWaitQueueLength(null) throws NullPointerException
701		*/
702		public void testGetWaitQueueLengthNPE() {
703		final Mutex sync = new Mutex();
#	Line 540 | Line 707 | public class AbstractQueuedLongSynchroni
707		} catch (NullPointerException success) {}
708		}
709
543	–
710		/**
711		* getWaitingThreads throws NPE if null
712		*/
#	Line 552 | Line 718 | public class AbstractQueuedLongSynchroni
718		} catch (NullPointerException success) {}
719		}
720
555	–
721		/**
722	<	* hasWaiters throws IAE if not owned
722	>	* hasWaiters throws IllegalArgumentException if not owned
723		*/
724		public void testHasWaitersIAE() {
725		final Mutex sync = new Mutex();
726	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
726	>	final ConditionObject c = sync.newCondition();
727		final Mutex sync2 = new Mutex();
728		try {
729		sync2.hasWaiters(c);
730		shouldThrow();
731		} catch (IllegalArgumentException success) {}
732	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
733		}
734
735		/**
736	<	* hasWaiters throws IMSE if not synced
736	>	* hasWaiters throws IllegalMonitorStateException if not synced
737		*/
738		public void testHasWaitersIMSE() {
739		final Mutex sync = new Mutex();
740	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
740	>	final ConditionObject c = sync.newCondition();
741		try {
742		sync.hasWaiters(c);
743		shouldThrow();
744		} catch (IllegalMonitorStateException success) {}
745	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
746		}
747
581	–
748		/**
749	<	* getWaitQueueLength throws IAE if not owned
749	>	* getWaitQueueLength throws IllegalArgumentException if not owned
750		*/
751		public void testGetWaitQueueLengthIAE() {
752		final Mutex sync = new Mutex();
753	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
753	>	final ConditionObject c = sync.newCondition();
754		final Mutex sync2 = new Mutex();
755		try {
756		sync2.getWaitQueueLength(c);
757		shouldThrow();
758		} catch (IllegalArgumentException success) {}
759	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
760		}
761
762		/**
763	<	* getWaitQueueLength throws IMSE if not synced
763	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
764		*/
765		public void testGetWaitQueueLengthIMSE() {
766		final Mutex sync = new Mutex();
767	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
767	>	final ConditionObject c = sync.newCondition();
768		try {
769		sync.getWaitQueueLength(c);
770		shouldThrow();
771		} catch (IllegalMonitorStateException success) {}
772	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
773		}
774
607	–
775		/**
776	<	* getWaitingThreads throws IAE if not owned
776	>	* getWaitingThreads throws IllegalArgumentException if not owned
777		*/
778		public void testGetWaitingThreadsIAE() {
779		final Mutex sync = new Mutex();
780	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
780	>	final ConditionObject c = sync.newCondition();
781		final Mutex sync2 = new Mutex();
782		try {
783		sync2.getWaitingThreads(c);
784		shouldThrow();
785		} catch (IllegalArgumentException success) {}
786	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
787		}
788
789		/**
790	<	* getWaitingThreads throws IMSE if not synced
790	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
791		*/
792		public void testGetWaitingThreadsIMSE() {
793		final Mutex sync = new Mutex();
794	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
794	>	final ConditionObject c = sync.newCondition();
795		try {
796		sync.getWaitingThreads(c);
797		shouldThrow();
798		} catch (IllegalMonitorStateException success) {}
799	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
800		}
801
633	–
634	–
802		/**
803		* hasWaiters returns true when a thread is waiting, else false
804		*/
805	<	public void testHasWaiters() throws InterruptedException {
805	>	public void testHasWaiters() {
806		final Mutex sync = new Mutex();
807	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
808	<	Thread t = new Thread(new CheckedRunnable() {
807	>	final ConditionObject c = sync.newCondition();
808	>	final BooleanLatch acquired = new BooleanLatch();
809	>	Thread t = newStartedThread(new CheckedRunnable() {
810		public void realRun() throws InterruptedException {
811	<	sync.acquire(1);
812	<	threadAssertFalse(sync.hasWaiters(c));
813	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
811	>	sync.acquire();
812	>	assertHasWaitersLocked(sync, c, NO_THREADS);
813	>	assertFalse(sync.hasWaiters(c));
814	>	assertTrue(acquired.releaseShared(0));
815		c.await();
816	<	sync.release(1);
816	>	sync.release();
817		}});
818
819	<	t.start();
820	<	Thread.sleep(SHORT_DELAY_MS);
821	<	sync.acquire(1);
819	>	acquired.acquireShared(0);
820	>	sync.acquire();
821	>	assertHasWaitersLocked(sync, c, t);
822	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
823		assertTrue(sync.hasWaiters(c));
654	–	assertEquals(1, sync.getWaitQueueLength(c));
824		c.signal();
825	<	sync.release(1);
826	<	Thread.sleep(SHORT_DELAY_MS);
658	<	sync.acquire(1);
825	>	assertHasWaitersLocked(sync, c, NO_THREADS);
826	>	assertHasExclusiveQueuedThreads(sync, t);
827		assertFalse(sync.hasWaiters(c));
828	<	assertEquals(0, sync.getWaitQueueLength(c));
829	<	sync.release(1);
830	<	t.join(SHORT_DELAY_MS);
831	<	assertFalse(t.isAlive());
828	>	sync.release();
829	>
830	>	awaitTermination(t);
831	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
832		}
833
834		/**
835		* getWaitQueueLength returns number of waiting threads
836		*/
837	<	public void testGetWaitQueueLength() throws InterruptedException {
837	>	public void testGetWaitQueueLength() {
838		final Mutex sync = new Mutex();
839	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
840	<	Thread t1 = new Thread(new CheckedRunnable() {
839	>	final ConditionObject c = sync.newCondition();
840	>	final BooleanLatch acquired1 = new BooleanLatch();
841	>	final BooleanLatch acquired2 = new BooleanLatch();
842	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
843		public void realRun() throws InterruptedException {
844	<	sync.acquire(1);
845	<	threadAssertFalse(sync.hasWaiters(c));
846	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
844	>	sync.acquire();
845	>	assertHasWaitersLocked(sync, c, NO_THREADS);
846	>	assertEquals(0, sync.getWaitQueueLength(c));
847	>	assertTrue(acquired1.releaseShared(0));
848		c.await();
849	<	sync.release(1);
849	>	sync.release();
850		}});
851	+	acquired1.acquireShared(0);
852	+	sync.acquire();
853	+	assertHasWaitersLocked(sync, c, t1);
854	+	assertEquals(1, sync.getWaitQueueLength(c));
855	+	sync.release();
856
857	<	Thread t2 = new Thread(new CheckedRunnable() {
857	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
858		public void realRun() throws InterruptedException {
859	<	sync.acquire(1);
860	<	threadAssertTrue(sync.hasWaiters(c));
861	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
859	>	sync.acquire();
860	>	assertHasWaitersLocked(sync, c, t1);
861	>	assertEquals(1, sync.getWaitQueueLength(c));
862	>	assertTrue(acquired2.releaseShared(0));
863		c.await();
864	<	sync.release(1);
864	>	sync.release();
865		}});
866	<
867	<	t1.start();
868	<	Thread.sleep(SHORT_DELAY_MS);
869	<	t2.start();
693	<	Thread.sleep(SHORT_DELAY_MS);
694	<	sync.acquire(1);
695	<	assertTrue(sync.hasWaiters(c));
866	>	acquired2.acquireShared(0);
867	>	sync.acquire();
868	>	assertHasWaitersLocked(sync, c, t1, t2);
869	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
870		assertEquals(2, sync.getWaitQueueLength(c));
871		c.signalAll();
872	<	sync.release(1);
873	<	Thread.sleep(SHORT_DELAY_MS);
700	<	sync.acquire(1);
701	<	assertFalse(sync.hasWaiters(c));
872	>	assertHasWaitersLocked(sync, c, NO_THREADS);
873	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
874		assertEquals(0, sync.getWaitQueueLength(c));
875	<	sync.release(1);
876	<	t1.join(SHORT_DELAY_MS);
877	<	t2.join(SHORT_DELAY_MS);
878	<	assertFalse(t1.isAlive());
879	<	assertFalse(t2.isAlive());
875	>	sync.release();
876	>
877	>	awaitTermination(t1);
878	>	awaitTermination(t2);
879	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
880		}
881
882		/**
883		* getWaitingThreads returns only and all waiting threads
884		*/
885	<	public void testGetWaitingThreads() throws InterruptedException {
885	>	public void testGetWaitingThreads() {
886		final Mutex sync = new Mutex();
887	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
888	<	Thread t1 = new Thread(new CheckedRunnable() {
887	>	final ConditionObject c = sync.newCondition();
888	>	final BooleanLatch acquired1 = new BooleanLatch();
889	>	final BooleanLatch acquired2 = new BooleanLatch();
890	>	final Thread t1 = new Thread(new CheckedRunnable() {
891		public void realRun() throws InterruptedException {
892	<	sync.acquire(1);
893	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
892	>	sync.acquire();
893	>	assertHasWaitersLocked(sync, c, NO_THREADS);
894	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
895	>	assertTrue(acquired1.releaseShared(0));
896		c.await();
897	<	sync.release(1);
897	>	sync.release();
898		}});
899
900	<	Thread t2 = new Thread(new CheckedRunnable() {
900	>	final Thread t2 = new Thread(new CheckedRunnable() {
901		public void realRun() throws InterruptedException {
902	<	sync.acquire(1);
903	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
902	>	sync.acquire();
903	>	assertHasWaitersLocked(sync, c, t1);
904	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
905	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
906	>	assertEquals(1, sync.getWaitingThreads(c).size());
907	>	assertTrue(acquired2.releaseShared(0));
908		c.await();
909	<	sync.release(1);
909	>	sync.release();
910		}});
911
912	<	sync.acquire(1);
913	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
914	<	sync.release(1);
915	<	t1.start();
916	<	Thread.sleep(SHORT_DELAY_MS);
917	<	t2.start();
918	<	Thread.sleep(SHORT_DELAY_MS);
739	<	sync.acquire(1);
740	<	assertTrue(sync.hasWaiters(c));
741	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
742	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
743	<	c.signalAll();
744	<	sync.release(1);
745	<	Thread.sleep(SHORT_DELAY_MS);
746	<	sync.acquire(1);
747	<	assertFalse(sync.hasWaiters(c));
748	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
749	<	sync.release(1);
750	<	t1.join(SHORT_DELAY_MS);
751	<	t2.join(SHORT_DELAY_MS);
752	<	assertFalse(t1.isAlive());
753	<	assertFalse(t2.isAlive());
754	<	}
912	>	sync.acquire();
913	>	assertHasWaitersLocked(sync, c, NO_THREADS);
914	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
915	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
916	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
917	>	assertEquals(0, sync.getWaitingThreads(c).size());
918	>	sync.release();
919
920	+	t1.start();
921	+	acquired1.acquireShared(0);
922	+	sync.acquire();
923	+	assertHasWaitersLocked(sync, c, t1);
924	+	assertTrue(sync.getWaitingThreads(c).contains(t1));
925	+	assertFalse(sync.getWaitingThreads(c).contains(t2));
926	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
927	+	assertEquals(1, sync.getWaitingThreads(c).size());
928	+	sync.release();
929
930	+	t2.start();
931	+	acquired2.acquireShared(0);
932	+	sync.acquire();
933	+	assertHasWaitersLocked(sync, c, t1, t2);
934	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
935	+	assertTrue(sync.getWaitingThreads(c).contains(t1));
936	+	assertTrue(sync.getWaitingThreads(c).contains(t2));
937	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
938	+	assertEquals(2, sync.getWaitingThreads(c).size());
939	+	c.signalAll();
940	+	assertHasWaitersLocked(sync, c, NO_THREADS);
941	+	assertHasExclusiveQueuedThreads(sync, t1, t2);
942	+	assertFalse(sync.getWaitingThreads(c).contains(t1));
943	+	assertFalse(sync.getWaitingThreads(c).contains(t2));
944	+	assertTrue(sync.getWaitingThreads(c).isEmpty());
945	+	assertEquals(0, sync.getWaitingThreads(c).size());
946	+	sync.release();
947	+
948	+	awaitTermination(t1);
949	+	awaitTermination(t2);
950	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
951	+	}
952
953		/**
954	<	* awaitUninterruptibly doesn't abort on interrupt
954	>	* awaitUninterruptibly is uninterruptible
955		*/
956	<	public void testAwaitUninterruptibly() throws InterruptedException {
956	>	public void testAwaitUninterruptibly() {
957		final Mutex sync = new Mutex();
958	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
959	<	Thread t = new Thread(new CheckedRunnable() {
958	>	final ConditionObject c = sync.newCondition();
959	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
960	>	Thread t = newStartedThread(new CheckedRunnable() {
961		public void realRun() {
962	<	sync.acquire(1);
962	>	sync.acquire();
963	>	assertTrue(pleaseInterrupt.releaseShared(0));
964		c.awaitUninterruptibly();
965	<	sync.release(1);
965	>	assertTrue(Thread.interrupted());
966	>	assertHasWaitersLocked(sync, c, NO_THREADS);
967	>	sync.release();
968		}});
969
970	<	t.start();
971	<	Thread.sleep(SHORT_DELAY_MS);
970	>	pleaseInterrupt.acquireShared(0);
971	>	sync.acquire();
972	>	assertHasWaitersLocked(sync, c, t);
973	>	sync.release();
974		t.interrupt();
975	<	sync.acquire(1);
975	>	assertHasWaitersUnlocked(sync, c, t);
976	>	assertThreadStaysAlive(t);
977	>	sync.acquire();
978	>	assertHasWaitersLocked(sync, c, t);
979	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
980		c.signal();
981	<	sync.release(1);
982	<	t.join(SHORT_DELAY_MS);
983	<	assertFalse(t.isAlive());
984	<	}
780	<
781	<	/**
782	<	* await is interruptible
783	<	*/
784	<	public void testAwait_Interrupt() throws InterruptedException {
785	<	final Mutex sync = new Mutex();
786	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
787	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
788	<	public void realRun() throws InterruptedException {
789	<	sync.acquire(1);
790	<	c.await();
791	<	sync.release(1);
792	<	}});
793	<
794	<	t.start();
795	<	Thread.sleep(SHORT_DELAY_MS);
796	<	t.interrupt();
797	<	t.join(SHORT_DELAY_MS);
798	<	assertFalse(t.isAlive());
981	>	assertHasWaitersLocked(sync, c, NO_THREADS);
982	>	assertHasExclusiveQueuedThreads(sync, t);
983	>	sync.release();
984	>	awaitTermination(t);
985		}
986
987		/**
988	<	* awaitNanos is interruptible
988	>	* await/awaitNanos/awaitUntil is interruptible
989		*/
990	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
990	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
991	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
992	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
993	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
994	>	public void testInterruptible(final AwaitMethod awaitMethod) {
995		final Mutex sync = new Mutex();
996	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
997	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
996	>	final ConditionObject c = sync.newCondition();
997	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
998	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
999		public void realRun() throws InterruptedException {
1000	<	sync.acquire(1);
1001	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
1002	<	sync.release(1);
1000	>	sync.acquire();
1001	>	assertTrue(pleaseInterrupt.releaseShared(0));
1002	>	await(c, awaitMethod);
1003		}});
1004
1005	<	t.start();
815	<	Thread.sleep(SHORT_DELAY_MS);
1005	>	pleaseInterrupt.acquireShared(0);
1006		t.interrupt();
1007	<	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	<	sync.release(1);
833	<	}});
834	<
835	<	t.start();
836	<	Thread.sleep(SHORT_DELAY_MS);
837	<	t.interrupt();
838	<	t.join(SHORT_DELAY_MS);
839	<	assertFalse(t.isAlive());
1007	>	awaitTermination(t);
1008		}
1009
1010		/**
1011		* signalAll wakes up all threads
1012		*/
1013	<	public void testSignalAll() throws InterruptedException {
1014	<	final Mutex sync = new Mutex();
1015	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1016	<	Thread t1 = new Thread(new CheckedRunnable() {
1013	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1014	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1015	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1016	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1017	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1018	>	final Mutex sync = new Mutex();
1019	>	final ConditionObject c = sync.newCondition();
1020	>	final BooleanLatch acquired1 = new BooleanLatch();
1021	>	final BooleanLatch acquired2 = new BooleanLatch();
1022	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1023		public void realRun() throws InterruptedException {
1024	<	sync.acquire(1);
1025	<	c.await();
1026	<	sync.release(1);
1024	>	sync.acquire();
1025	>	acquired1.releaseShared(0);
1026	>	await(c, awaitMethod);
1027	>	sync.release();
1028		}});
1029
1030	<	Thread t2 = new Thread(new CheckedRunnable() {
1030	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1031		public void realRun() throws InterruptedException {
1032	<	sync.acquire(1);
1033	<	c.await();
1034	<	sync.release(1);
1032	>	sync.acquire();
1033	>	acquired2.releaseShared(0);
1034	>	await(c, awaitMethod);
1035	>	sync.release();
1036		}});
1037
1038	<	t1.start();
1039	<	t2.start();
1040	<	Thread.sleep(SHORT_DELAY_MS);
1041	<	sync.acquire(1);
1038	>	acquired1.acquireShared(0);
1039	>	acquired2.acquireShared(0);
1040	>	sync.acquire();
1041	>	assertHasWaitersLocked(sync, c, t1, t2);
1042	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1043		c.signalAll();
1044	<	sync.release(1);
1045	<	t1.join(SHORT_DELAY_MS);
1046	<	t2.join(SHORT_DELAY_MS);
1047	<	assertFalse(t1.isAlive());
1048	<	assertFalse(t2.isAlive());
1044	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1045	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1046	>	sync.release();
1047	>	awaitTermination(t1);
1048	>	awaitTermination(t2);
1049		}
1050
874	–
1051		/**
1052		* toString indicates current state
1053		*/
1054		public void testToString() {
1055		Mutex sync = new Mutex();
1056	<	String us = sync.toString();
1057	<	assertTrue(us.indexOf("State = 0") >= 0);
1058	<	sync.acquire(1);
883	<	String ls = sync.toString();
884	<	assertTrue(ls.indexOf("State = " + Mutex.LOCKED) >= 0);
1056	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1057	>	sync.acquire();
1058	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1059		}
1060
1061		/**
1062	<	* A serialized AQS deserializes with current state
1063	<	*/
1064	<	public void testSerialization() throws Exception {
1065	<	Mutex l = new Mutex();
1066	<	l.acquire(1);
1067	<	assertTrue(l.isHeldExclusively());
1068	<
1069	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1070	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
897	<	out.writeObject(l);
898	<	out.close();
899	<
900	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
901	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
902	<	Mutex r = (Mutex) in.readObject();
903	<	assertTrue(r.isHeldExclusively());
904	<	}
1062	>	* A serialized AQS deserializes with current state, but no queued threads
1063	>	*/
1064	>	public void testSerialization() {
1065	>	Mutex sync = new Mutex();
1066	>	assertFalse(serialClone(sync).isHeldExclusively());
1067	>	sync.acquire();
1068	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1069	>	waitForQueuedThread(sync, t);
1070	>	assertTrue(sync.isHeldExclusively());
1071
1072	+	Mutex clone = serialClone(sync);
1073	+	assertTrue(clone.isHeldExclusively());
1074	+	assertHasExclusiveQueuedThreads(sync, t);
1075	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1076	+	t.interrupt();
1077	+	awaitTermination(t);
1078	+	sync.release();
1079	+	assertFalse(sync.isHeldExclusively());
1080	+	assertTrue(clone.isHeldExclusively());
1081	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1082	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1083	+	}
1084
1085		/**
1086		* tryReleaseShared setting state changes getState
#	Line 910 | Line 1088 | public class AbstractQueuedLongSynchroni
1088		public void testGetStateWithReleaseShared() {
1089		final BooleanLatch l = new BooleanLatch();
1090		assertFalse(l.isSignalled());
1091	<	l.releaseShared(0);
1091	>	assertTrue(l.releaseShared(0));
1092		assertTrue(l.isSignalled());
1093		}
1094
#	Line 920 | Line 1098 | public class AbstractQueuedLongSynchroni
1098		public void testReleaseShared() {
1099		final BooleanLatch l = new BooleanLatch();
1100		assertFalse(l.isSignalled());
1101	<	l.releaseShared(0);
1101	>	assertTrue(l.releaseShared(0));
1102		assertTrue(l.isSignalled());
1103	<	l.releaseShared(0);
1103	>	assertTrue(l.releaseShared(0));
1104		assertTrue(l.isSignalled());
1105		}
1106
1107		/**
1108		* acquireSharedInterruptibly returns after release, but not before
1109		*/
1110	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1110	>	public void testAcquireSharedInterruptibly() {
1111		final BooleanLatch l = new BooleanLatch();
1112
1113	<	Thread t = new Thread(new CheckedRunnable() {
1113	>	Thread t = newStartedThread(new CheckedRunnable() {
1114		public void realRun() throws InterruptedException {
1115	<	threadAssertFalse(l.isSignalled());
1115	>	assertFalse(l.isSignalled());
1116		l.acquireSharedInterruptibly(0);
1117	<	threadAssertTrue(l.isSignalled());
1117	>	assertTrue(l.isSignalled());
1118	>	l.acquireSharedInterruptibly(0);
1119	>	assertTrue(l.isSignalled());
1120		}});
1121
1122	<	t.start();
1122	>	waitForQueuedThread(l, t);
1123		assertFalse(l.isSignalled());
1124	<	Thread.sleep(SHORT_DELAY_MS);
1125	<	l.releaseShared(0);
1124	>	assertThreadStaysAlive(t);
1125	>	assertHasSharedQueuedThreads(l, t);
1126	>	assertTrue(l.releaseShared(0));
1127		assertTrue(l.isSignalled());
1128	<	t.join();
1128	>	awaitTermination(t);
1129		}
1130
950	–
1131		/**
1132	<	* acquireSharedTimed returns after release
1132	>	* tryAcquireSharedNanos returns after release, but not before
1133		*/
1134	<	public void testAsquireSharedTimed() throws InterruptedException {
1134	>	public void testTryAcquireSharedNanos() {
1135		final BooleanLatch l = new BooleanLatch();
1136
1137	<	Thread t = new Thread(new CheckedRunnable() {
1137	>	Thread t = newStartedThread(new CheckedRunnable() {
1138		public void realRun() throws InterruptedException {
1139	<	threadAssertFalse(l.isSignalled());
1140	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1141	<	threadAssertTrue(l.isSignalled());
1139	>	assertFalse(l.isSignalled());
1140	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1141	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1142	>	assertTrue(l.isSignalled());
1143	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1144	>	assertTrue(l.isSignalled());
1145		}});
1146
1147	<	t.start();
1147	>	waitForQueuedThread(l, t);
1148		assertFalse(l.isSignalled());
1149	<	Thread.sleep(SHORT_DELAY_MS);
1150	<	l.releaseShared(0);
1149	>	assertThreadStaysAlive(t);
1150	>	assertTrue(l.releaseShared(0));
1151		assertTrue(l.isSignalled());
1152	<	t.join();
1152	>	awaitTermination(t);
1153		}
1154
1155		/**
1156	<	* acquireSharedInterruptibly throws IE if interrupted before released
1156	>	* acquireSharedInterruptibly is interruptible
1157		*/
1158	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1158	>	public void testAcquireSharedInterruptibly_Interruptible() {
1159		final BooleanLatch l = new BooleanLatch();
1160	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1160	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1161		public void realRun() throws InterruptedException {
1162	<	threadAssertFalse(l.isSignalled());
1162	>	assertFalse(l.isSignalled());
1163		l.acquireSharedInterruptibly(0);
1164		}});
1165
1166	<	t.start();
1166	>	waitForQueuedThread(l, t);
1167		assertFalse(l.isSignalled());
1168		t.interrupt();
1169	<	t.join();
1169	>	awaitTermination(t);
1170	>	assertFalse(l.isSignalled());
1171		}
1172
1173		/**
1174	<	* acquireSharedTimed throws IE if interrupted before released
1174	>	* tryAcquireSharedNanos is interruptible
1175		*/
1176	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1176	>	public void testTryAcquireSharedNanos_Interruptible() {
1177		final BooleanLatch l = new BooleanLatch();
1178	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1178	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1179		public void realRun() throws InterruptedException {
1180	<	threadAssertFalse(l.isSignalled());
1181	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1180	>	assertFalse(l.isSignalled());
1181	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1182	>	l.tryAcquireSharedNanos(0, nanos);
1183		}});
1184
1185	<	t.start();
1001	<	Thread.sleep(SHORT_DELAY_MS);
1185	>	waitForQueuedThread(l, t);
1186		assertFalse(l.isSignalled());
1187		t.interrupt();
1188	<	t.join();
1188	>	awaitTermination(t);
1189	>	assertFalse(l.isSignalled());
1190		}
1191
1192		/**
1193	<	* acquireSharedTimed times out if not released before timeout
1193	>	* tryAcquireSharedNanos times out if not released before timeout
1194		*/
1195	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1195	>	public void testTryAcquireSharedNanos_Timeout() {
1196		final BooleanLatch l = new BooleanLatch();
1197	<	Thread t = new Thread(new CheckedRunnable() {
1197	>	final BooleanLatch observedQueued = new BooleanLatch();
1198	>	final long timeoutMillis = timeoutMillis();
1199	>	Thread t = newStartedThread(new CheckedRunnable() {
1200		public void realRun() throws InterruptedException {
1201	<	threadAssertFalse(l.isSignalled());
1202	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1201	>	assertFalse(l.isSignalled());
1202	>	for (long millis = timeoutMillis();
1203	>	!observedQueued.isSignalled();
1204	>	millis *= 2) {
1205	>	long nanos = MILLISECONDS.toNanos(millis);
1206	>	long startTime = System.nanoTime();
1207	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1208	>	assertTrue(millisElapsedSince(startTime) >= millis);
1209	>	}
1210	>	assertFalse(l.isSignalled());
1211		}});
1212
1213	<	t.start();
1214	<	Thread.sleep(SHORT_DELAY_MS);
1213	>	waitForQueuedThread(l, t);
1214	>	observedQueued.releaseShared(0);
1215	>	assertFalse(l.isSignalled());
1216	>	awaitTermination(t);
1217		assertFalse(l.isSignalled());
1218	<	t.join();
1218	>	}
1219	>
1220	>	/**
1221	>	* awaitNanos/timed await with 0 wait times out immediately
1222	>	*/
1223	>	public void testAwait_Zero() throws InterruptedException {
1224	>	final Mutex sync = new Mutex();
1225	>	final ConditionObject c = sync.newCondition();
1226	>	sync.acquire();
1227	>	assertTrue(c.awaitNanos(0L) <= 0);
1228	>	assertFalse(c.await(0L, NANOSECONDS));
1229	>	sync.release();
1230	>	}
1231	>
1232	>	/**
1233	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1234	>	*/
1235	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1236	>	final Mutex sync = new Mutex();
1237	>	final ConditionObject c = sync.newCondition();
1238	>	sync.acquire();
1239	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1240	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1241	>	sync.release();
1242		}
1243
1244		}

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