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Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.14 by jsr166, Mon Nov 30 08:31:09 2009 UTC vs.
Revision 1.32 by jsr166, Sun Feb 22 04:34:44 2015 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	+	default:
229	+	throw new AssertionError();
230	+	}
231	+	}
232	+
233	+	/**
234	+	* Checks that awaiting the given condition times out (using the
235	+	* default timeout duration).
236	+	*/
237	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
238	+	long timeoutMillis = timeoutMillis();
239	+	long startTime = System.nanoTime();
240	+	try {
241	+	switch (awaitMethod) {
242	+	case awaitTimed:
243	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
244	+	break;
245	+	case awaitNanos:
246	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
247	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
248	+	assertTrue(nanosRemaining <= 0);
249	+	break;
250	+	case awaitUntil:
251	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
252	+	break;
253	+	default:
254	+	throw new UnsupportedOperationException();
255	+	}
256	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
257	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
258	+	}
259	+
260		/**
261		* isHeldExclusively is false upon construction
262		*/
263		public void testIsHeldExclusively() {
264	<	Mutex rl = new Mutex();
265	<	assertFalse(rl.isHeldExclusively());
264	>	Mutex sync = new Mutex();
265	>	assertFalse(sync.isHeldExclusively());
266		}
267
268		/**
269		* acquiring released sync succeeds
270		*/
271		public void testAcquire() {
272	<	Mutex rl = new Mutex();
273	<	rl.acquire(1);
274	<	assertTrue(rl.isHeldExclusively());
275	<	rl.release(1);
276	<	assertFalse(rl.isHeldExclusively());
272	>	Mutex sync = new Mutex();
273	>	sync.acquire();
274	>	assertTrue(sync.isHeldExclusively());
275	>	sync.release();
276	>	assertFalse(sync.isHeldExclusively());
277		}
278
279		/**
280	<	* tryAcquire on an released sync succeeds
280	>	* tryAcquire on a released sync succeeds
281		*/
282		public void testTryAcquire() {
283	<	Mutex rl = new Mutex();
284	<	assertTrue(rl.tryAcquire(1));
285	<	assertTrue(rl.isHeldExclusively());
286	<	rl.release(1);
283	>	Mutex sync = new Mutex();
284	>	assertTrue(sync.tryAcquire());
285	>	assertTrue(sync.isHeldExclusively());
286	>	sync.release();
287	>	assertFalse(sync.isHeldExclusively());
288		}
289
290		/**
291		* hasQueuedThreads reports whether there are waiting threads
292		*/
293	<	public void testhasQueuedThreads() throws InterruptedException {
293	>	public void testHasQueuedThreads() {
294		final Mutex sync = new Mutex();
130	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
295		assertFalse(sync.hasQueuedThreads());
296	<	sync.acquire(1);
297	<	t1.start();
298	<	Thread.sleep(SHORT_DELAY_MS);
296	>	sync.acquire();
297	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
298	>	waitForQueuedThread(sync, t1);
299		assertTrue(sync.hasQueuedThreads());
300	<	t2.start();
301	<	Thread.sleep(SHORT_DELAY_MS);
300	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
301	>	waitForQueuedThread(sync, t2);
302		assertTrue(sync.hasQueuedThreads());
303		t1.interrupt();
304	<	Thread.sleep(SHORT_DELAY_MS);
304	>	awaitTermination(t1);
305		assertTrue(sync.hasQueuedThreads());
306	<	sync.release(1);
307	<	Thread.sleep(SHORT_DELAY_MS);
306	>	sync.release();
307	>	awaitTermination(t2);
308		assertFalse(sync.hasQueuedThreads());
146	–	t1.join();
147	–	t2.join();
309		}
310
311		/**
312	<	* isQueued(null) throws NPE
312	>	* isQueued(null) throws NullPointerException
313		*/
314		public void testIsQueuedNPE() {
315		final Mutex sync = new Mutex();
#	Line 159 | Line 320 | public class AbstractQueuedLongSynchroni
320		}
321
322		/**
323	<	* isQueued reports whether a thread is queued.
323	>	* isQueued reports whether a thread is queued
324		*/
325	<	public void testIsQueued() throws InterruptedException {
325	>	public void testIsQueued() {
326		final Mutex sync = new Mutex();
327		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
328		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
329		assertFalse(sync.isQueued(t1));
330		assertFalse(sync.isQueued(t2));
331	<	sync.acquire(1);
331	>	sync.acquire();
332		t1.start();
333	<	Thread.sleep(SHORT_DELAY_MS);
333	>	waitForQueuedThread(sync, t1);
334		assertTrue(sync.isQueued(t1));
335	+	assertFalse(sync.isQueued(t2));
336		t2.start();
337	<	Thread.sleep(SHORT_DELAY_MS);
337	>	waitForQueuedThread(sync, t2);
338		assertTrue(sync.isQueued(t1));
339		assertTrue(sync.isQueued(t2));
340		t1.interrupt();
341	<	Thread.sleep(SHORT_DELAY_MS);
341	>	awaitTermination(t1);
342		assertFalse(sync.isQueued(t1));
343		assertTrue(sync.isQueued(t2));
344	<	sync.release(1);
345	<	Thread.sleep(SHORT_DELAY_MS);
344	>	sync.release();
345	>	awaitTermination(t2);
346		assertFalse(sync.isQueued(t1));
185	–	Thread.sleep(SHORT_DELAY_MS);
347		assertFalse(sync.isQueued(t2));
187	–	t1.join();
188	–	t2.join();
348		}
349
350		/**
351		* getFirstQueuedThread returns first waiting thread or null if none
352		*/
353	<	public void testGetFirstQueuedThread() throws InterruptedException {
353	>	public void testGetFirstQueuedThread() {
354		final Mutex sync = new Mutex();
196	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
355		assertNull(sync.getFirstQueuedThread());
356	<	sync.acquire(1);
357	<	t1.start();
358	<	Thread.sleep(SHORT_DELAY_MS);
356	>	sync.acquire();
357	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
358	>	waitForQueuedThread(sync, t1);
359		assertEquals(t1, sync.getFirstQueuedThread());
360	<	t2.start();
361	<	Thread.sleep(SHORT_DELAY_MS);
360	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
361	>	waitForQueuedThread(sync, t2);
362		assertEquals(t1, sync.getFirstQueuedThread());
363		t1.interrupt();
364	<	Thread.sleep(SHORT_DELAY_MS);
208	<	Thread.sleep(SHORT_DELAY_MS);
364	>	awaitTermination(t1);
365		assertEquals(t2, sync.getFirstQueuedThread());
366	<	sync.release(1);
367	<	Thread.sleep(SHORT_DELAY_MS);
366	>	sync.release();
367	>	awaitTermination(t2);
368		assertNull(sync.getFirstQueuedThread());
213	–	t1.join();
214	–	t2.join();
369		}
370
217	–
371		/**
372		* hasContended reports false if no thread has ever blocked, else true
373		*/
374	<	public void testHasContended() throws InterruptedException {
374	>	public void testHasContended() {
375		final Mutex sync = new Mutex();
223	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
376		assertFalse(sync.hasContended());
377	<	sync.acquire(1);
378	<	t1.start();
379	<	Thread.sleep(SHORT_DELAY_MS);
377	>	sync.acquire();
378	>	assertFalse(sync.hasContended());
379	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
380	>	waitForQueuedThread(sync, t1);
381		assertTrue(sync.hasContended());
382	<	t2.start();
383	<	Thread.sleep(SHORT_DELAY_MS);
382	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
383	>	waitForQueuedThread(sync, t2);
384		assertTrue(sync.hasContended());
385		t1.interrupt();
386	<	Thread.sleep(SHORT_DELAY_MS);
386	>	awaitTermination(t1);
387		assertTrue(sync.hasContended());
388	<	sync.release(1);
389	<	Thread.sleep(SHORT_DELAY_MS);
388	>	sync.release();
389	>	awaitTermination(t2);
390		assertTrue(sync.hasContended());
239	–	t1.join();
240	–	t2.join();
391		}
392
393		/**
394	<	* getQueuedThreads includes waiting threads
394	>	* getQueuedThreads returns all waiting threads
395		*/
396	<	public void testGetQueuedThreads() throws InterruptedException {
396	>	public void testGetQueuedThreads() {
397		final Mutex sync = new Mutex();
398		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
399		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
400	<	assertTrue(sync.getQueuedThreads().isEmpty());
401	<	sync.acquire(1);
402	<	assertTrue(sync.getQueuedThreads().isEmpty());
400	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
401	>	sync.acquire();
402	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
403		t1.start();
404	<	Thread.sleep(SHORT_DELAY_MS);
404	>	waitForQueuedThread(sync, t1);
405	>	assertHasExclusiveQueuedThreads(sync, t1);
406		assertTrue(sync.getQueuedThreads().contains(t1));
407	+	assertFalse(sync.getQueuedThreads().contains(t2));
408		t2.start();
409	<	Thread.sleep(SHORT_DELAY_MS);
409	>	waitForQueuedThread(sync, t2);
410	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
411		assertTrue(sync.getQueuedThreads().contains(t1));
412		assertTrue(sync.getQueuedThreads().contains(t2));
413		t1.interrupt();
414	<	Thread.sleep(SHORT_DELAY_MS);
415	<	assertFalse(sync.getQueuedThreads().contains(t1));
416	<	assertTrue(sync.getQueuedThreads().contains(t2));
417	<	sync.release(1);
418	<	Thread.sleep(SHORT_DELAY_MS);
266	<	assertTrue(sync.getQueuedThreads().isEmpty());
267	<	t1.join();
268	<	t2.join();
414	>	awaitTermination(t1);
415	>	assertHasExclusiveQueuedThreads(sync, t2);
416	>	sync.release();
417	>	awaitTermination(t2);
418	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
419		}
420
421		/**
422	<	* getExclusiveQueuedThreads includes waiting threads
422	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
423		*/
424	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
424	>	public void testGetExclusiveQueuedThreads() {
425		final Mutex sync = new Mutex();
426		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
427		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
428	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
429	<	sync.acquire(1);
430	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
428	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
429	>	sync.acquire();
430	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
431		t1.start();
432	<	Thread.sleep(SHORT_DELAY_MS);
432	>	waitForQueuedThread(sync, t1);
433	>	assertHasExclusiveQueuedThreads(sync, t1);
434		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
435	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
436		t2.start();
437	<	Thread.sleep(SHORT_DELAY_MS);
437	>	waitForQueuedThread(sync, t2);
438	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
439		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
440		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
441		t1.interrupt();
442	<	Thread.sleep(SHORT_DELAY_MS);
443	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
444	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
445	<	sync.release(1);
446	<	Thread.sleep(SHORT_DELAY_MS);
294	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	<	t1.join();
296	<	t2.join();
442	>	awaitTermination(t1);
443	>	assertHasExclusiveQueuedThreads(sync, t2);
444	>	sync.release();
445	>	awaitTermination(t2);
446	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
447		}
448
449		/**
450		* getSharedQueuedThreads does not include exclusively waiting threads
451		*/
452	<	public void testGetSharedQueuedThreads() throws InterruptedException {
452	>	public void testGetSharedQueuedThreads_Exclusive() {
453		final Mutex sync = new Mutex();
304	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
454		assertTrue(sync.getSharedQueuedThreads().isEmpty());
455	<	sync.acquire(1);
455	>	sync.acquire();
456		assertTrue(sync.getSharedQueuedThreads().isEmpty());
457	<	t1.start();
458	<	Thread.sleep(SHORT_DELAY_MS);
457	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
458	>	waitForQueuedThread(sync, t1);
459		assertTrue(sync.getSharedQueuedThreads().isEmpty());
460	<	t2.start();
461	<	Thread.sleep(SHORT_DELAY_MS);
460	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
461	>	waitForQueuedThread(sync, t2);
462		assertTrue(sync.getSharedQueuedThreads().isEmpty());
463		t1.interrupt();
464	<	Thread.sleep(SHORT_DELAY_MS);
464	>	awaitTermination(t1);
465		assertTrue(sync.getSharedQueuedThreads().isEmpty());
466	<	sync.release(1);
467	<	Thread.sleep(SHORT_DELAY_MS);
466	>	sync.release();
467	>	awaitTermination(t2);
468		assertTrue(sync.getSharedQueuedThreads().isEmpty());
321	–	t1.join();
322	–	t2.join();
469		}
470
471		/**
472	<	* tryAcquireNanos is interruptible.
472	>	* getSharedQueuedThreads returns all shared waiting threads
473	>	*/
474	>	public void testGetSharedQueuedThreads_Shared() {
475	>	final BooleanLatch l = new BooleanLatch();
476	>	assertHasSharedQueuedThreads(l, NO_THREADS);
477	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
478	>	public void realRun() throws InterruptedException {
479	>	l.acquireSharedInterruptibly(0);
480	>	}});
481	>	waitForQueuedThread(l, t1);
482	>	assertHasSharedQueuedThreads(l, t1);
483	>	Thread t2 = newStartedThread(new CheckedRunnable() {
484	>	public void realRun() throws InterruptedException {
485	>	l.acquireSharedInterruptibly(0);
486	>	}});
487	>	waitForQueuedThread(l, t2);
488	>	assertHasSharedQueuedThreads(l, t1, t2);
489	>	t1.interrupt();
490	>	awaitTermination(t1);
491	>	assertHasSharedQueuedThreads(l, t2);
492	>	assertTrue(l.releaseShared(0));
493	>	awaitTermination(t2);
494	>	assertHasSharedQueuedThreads(l, NO_THREADS);
495	>	}
496	>
497	>	/**
498	>	* tryAcquireNanos is interruptible
499		*/
500	<	public void testInterruptedException2() throws InterruptedException {
500	>	public void testTryAcquireNanos_Interruptible() {
501		final Mutex sync = new Mutex();
502	<	sync.acquire(1);
503	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
502	>	sync.acquire();
503	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
504		public void realRun() throws InterruptedException {
505	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000L * 1000L);
505	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
506		}});
507
508	<	t.start();
337	<	Thread.sleep(SHORT_DELAY_MS);
508	>	waitForQueuedThread(sync, t);
509		t.interrupt();
510	<	t.join();
510	>	awaitTermination(t);
511		}
512
342	–
513		/**
514	<	* TryAcquire on exclusively held sync fails
514	>	* tryAcquire on exclusively held sync fails
515		*/
516	<	public void testTryAcquireWhenSynced() throws InterruptedException {
516	>	public void testTryAcquireWhenSynced() {
517		final Mutex sync = new Mutex();
518	<	sync.acquire(1);
519	<	Thread t = new Thread(new CheckedRunnable() {
518	>	sync.acquire();
519	>	Thread t = newStartedThread(new CheckedRunnable() {
520		public void realRun() {
521	<	threadAssertFalse(sync.tryAcquire(1));
521	>	assertFalse(sync.tryAcquire());
522		}});
523
524	<	t.start();
525	<	t.join();
356	<	sync.release(1);
524	>	awaitTermination(t);
525	>	sync.release();
526		}
527
528		/**
529		* tryAcquireNanos on an exclusively held sync times out
530		*/
531	<	public void testAcquireNanos_Timeout() throws InterruptedException {
531	>	public void testAcquireNanos_Timeout() {
532		final Mutex sync = new Mutex();
533	<	sync.acquire(1);
534	<	Thread t = new Thread(new CheckedRunnable() {
533	>	sync.acquire();
534	>	Thread t = newStartedThread(new CheckedRunnable() {
535		public void realRun() throws InterruptedException {
536	<	threadAssertFalse(sync.tryAcquireNanos(1, SHORT_DELAY_MS * 1000L * 1000L));
536	>	long startTime = System.nanoTime();
537	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
538	>	assertFalse(sync.tryAcquireNanos(nanos));
539	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
540		}});
541
542	<	t.start();
543	<	t.join();
372	<	sync.release(1);
542	>	awaitTermination(t);
543	>	sync.release();
544		}
545
375	–
546		/**
547		* getState is true when acquired and false when not
548		*/
549	<	public void testGetState() throws InterruptedException {
549	>	public void testGetState() {
550		final Mutex sync = new Mutex();
551	<	sync.acquire(1);
551	>	sync.acquire();
552		assertTrue(sync.isHeldExclusively());
553	<	sync.release(1);
553	>	sync.release();
554		assertFalse(sync.isHeldExclusively());
555	<	Thread t = new Thread(new CheckedRunnable() {
555	>
556	>	final BooleanLatch acquired = new BooleanLatch();
557	>	final BooleanLatch done = new BooleanLatch();
558	>	Thread t = newStartedThread(new CheckedRunnable() {
559		public void realRun() throws InterruptedException {
560	<	sync.acquire(1);
561	<	Thread.sleep(SMALL_DELAY_MS);
562	<	sync.release(1);
560	>	sync.acquire();
561	>	assertTrue(acquired.releaseShared(0));
562	>	done.acquireShared(0);
563	>	sync.release();
564		}});
565
566	<	t.start();
393	<	Thread.sleep(SHORT_DELAY_MS);
566	>	acquired.acquireShared(0);
567		assertTrue(sync.isHeldExclusively());
568	<	t.join();
568	>	assertTrue(done.releaseShared(0));
569	>	awaitTermination(t);
570		assertFalse(sync.isHeldExclusively());
571		}
572
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	–
573		/**
574		* acquireInterruptibly succeeds when released, else is interruptible
575		*/
576	<	public void testAcquireInterruptibly2() throws InterruptedException {
576	>	public void testAcquireInterruptibly() throws InterruptedException {
577		final Mutex sync = new Mutex();
578	<	sync.acquireInterruptibly(1);
579	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
580	<	t.start();
581	<	Thread.sleep(SHORT_DELAY_MS);
578	>	final BooleanLatch threadStarted = new BooleanLatch();
579	>	sync.acquireInterruptibly();
580	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
581	>	public void realRun() throws InterruptedException {
582	>	assertTrue(threadStarted.releaseShared(0));
583	>	sync.acquireInterruptibly();
584	>	}});
585	>
586	>	threadStarted.acquireShared(0);
587	>	waitForQueuedThread(sync, t);
588		t.interrupt();
589	+	awaitTermination(t);
590		assertTrue(sync.isHeldExclusively());
426	–	t.join();
591		}
592
593		/**
#	Line 431 | Line 595 | public class AbstractQueuedLongSynchroni
595		*/
596		public void testOwns() {
597		final Mutex sync = new Mutex();
598	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
598	>	final ConditionObject c = sync.newCondition();
599		final Mutex sync2 = new Mutex();
600		assertTrue(sync.owns(c));
601		assertFalse(sync2.owns(c));
#	Line 440 | Line 604 | public class AbstractQueuedLongSynchroni
604		/**
605		* Calling await without holding sync throws IllegalMonitorStateException
606		*/
607	<	public void testAwait_IllegalMonitor() throws InterruptedException {
607	>	public void testAwait_IMSE() {
608		final Mutex sync = new Mutex();
609	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
610	<	try {
611	<	c.await();
612	<	shouldThrow();
613	<	} catch (IllegalMonitorStateException success) {}
609	>	final ConditionObject c = sync.newCondition();
610	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
611	>	long startTime = System.nanoTime();
612	>	try {
613	>	await(c, awaitMethod);
614	>	shouldThrow();
615	>	} catch (IllegalMonitorStateException success) {
616	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
617	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
618	>	}
619		}
620
621		/**
622		* Calling signal without holding sync throws IllegalMonitorStateException
623		*/
624	<	public void testSignal_IllegalMonitor() throws InterruptedException {
624	>	public void testSignal_IMSE() {
625		final Mutex sync = new Mutex();
626	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
626	>	final ConditionObject c = sync.newCondition();
627		try {
628		c.signal();
629		shouldThrow();
630		} catch (IllegalMonitorStateException success) {}
631	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
632		}
633
634		/**
635	<	* awaitNanos without a signal times out
635	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
636		*/
637	<	public void testAwaitNanos_Timeout() throws InterruptedException {
637	>	public void testSignalAll_IMSE() {
638		final Mutex sync = new Mutex();
639	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
640	<	sync.acquire(1);
641	<	long t = c.awaitNanos(100);
642	<	assertTrue(t <= 0);
643	<	sync.release(1);
474	<	}
475	<
476	<	/**
477	<	*  Timed await without a signal times out
478	<	*/
479	<	public void testAwait_Timeout() throws InterruptedException {
480	<	final Mutex sync = new Mutex();
481	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
482	<	sync.acquire(1);
483	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
484	<	sync.release(1);
639	>	final ConditionObject c = sync.newCondition();
640	>	try {
641	>	c.signalAll();
642	>	shouldThrow();
643	>	} catch (IllegalMonitorStateException success) {}
644		}
645
646		/**
647	<	* awaitUntil without a signal times out
647	>	* await/awaitNanos/awaitUntil without a signal times out
648		*/
649	<	public void testAwaitUntil_Timeout() throws InterruptedException {
649	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
650	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
651	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
652	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
653		final Mutex sync = new Mutex();
654	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
655	<	sync.acquire(1);
656	<	java.util.Date d = new java.util.Date();
657	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
496	<	sync.release(1);
654	>	final ConditionObject c = sync.newCondition();
655	>	sync.acquire();
656	>	assertAwaitTimesOut(c, awaitMethod);
657	>	sync.release();
658		}
659
660		/**
661	<	* await returns when signalled
661	>	* await/awaitNanos/awaitUntil returns when signalled
662		*/
663	<	public void testAwait() throws InterruptedException {
663	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
664	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
665	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
666	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
667	>	public void testSignal(final AwaitMethod awaitMethod) {
668		final Mutex sync = new Mutex();
669	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
670	<	Thread t = new Thread(new CheckedRunnable() {
669	>	final ConditionObject c = sync.newCondition();
670	>	final BooleanLatch acquired = new BooleanLatch();
671	>	Thread t = newStartedThread(new CheckedRunnable() {
672		public void realRun() throws InterruptedException {
673	<	sync.acquire(1);
674	<	c.await();
675	<	sync.release(1);
673	>	sync.acquire();
674	>	assertTrue(acquired.releaseShared(0));
675	>	await(c, awaitMethod);
676	>	sync.release();
677		}});
678
679	<	t.start();
680	<	Thread.sleep(SHORT_DELAY_MS);
681	<	sync.acquire(1);
679	>	acquired.acquireShared(0);
680	>	sync.acquire();
681	>	assertHasWaitersLocked(sync, c, t);
682	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
683		c.signal();
684	<	sync.release(1);
685	<	t.join(SHORT_DELAY_MS);
686	<	assertFalse(t.isAlive());
684	>	assertHasWaitersLocked(sync, c, NO_THREADS);
685	>	assertHasExclusiveQueuedThreads(sync, t);
686	>	sync.release();
687	>	awaitTermination(t);
688		}
689
521	–
522	–
690		/**
691	<	* hasWaiters throws NPE if null
691	>	* hasWaiters(null) throws NullPointerException
692		*/
693		public void testHasWaitersNPE() {
694		final Mutex sync = new Mutex();
#	Line 532 | Line 699 | public class AbstractQueuedLongSynchroni
699		}
700
701		/**
702	<	* getWaitQueueLength throws NPE if null
702	>	* getWaitQueueLength(null) throws NullPointerException
703		*/
704		public void testGetWaitQueueLengthNPE() {
705		final Mutex sync = new Mutex();
#	Line 542 | Line 709 | public class AbstractQueuedLongSynchroni
709		} catch (NullPointerException success) {}
710		}
711
545	–
712		/**
713		* getWaitingThreads throws NPE if null
714		*/
#	Line 554 | Line 720 | public class AbstractQueuedLongSynchroni
720		} catch (NullPointerException success) {}
721		}
722
557	–
723		/**
724	<	* hasWaiters throws IAE if not owned
724	>	* hasWaiters throws IllegalArgumentException if not owned
725		*/
726		public void testHasWaitersIAE() {
727		final Mutex sync = new Mutex();
728	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
728	>	final ConditionObject c = sync.newCondition();
729		final Mutex sync2 = new Mutex();
730		try {
731		sync2.hasWaiters(c);
732		shouldThrow();
733		} catch (IllegalArgumentException success) {}
734	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
735		}
736
737		/**
738	<	* hasWaiters throws IMSE if not synced
738	>	* hasWaiters throws IllegalMonitorStateException if not synced
739		*/
740		public void testHasWaitersIMSE() {
741		final Mutex sync = new Mutex();
742	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
742	>	final ConditionObject c = sync.newCondition();
743		try {
744		sync.hasWaiters(c);
745		shouldThrow();
746		} catch (IllegalMonitorStateException success) {}
747	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
748		}
749
583	–
750		/**
751	<	* getWaitQueueLength throws IAE if not owned
751	>	* getWaitQueueLength throws IllegalArgumentException if not owned
752		*/
753		public void testGetWaitQueueLengthIAE() {
754		final Mutex sync = new Mutex();
755	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
755	>	final ConditionObject c = sync.newCondition();
756		final Mutex sync2 = new Mutex();
757		try {
758		sync2.getWaitQueueLength(c);
759		shouldThrow();
760		} catch (IllegalArgumentException success) {}
761	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
762		}
763
764		/**
765	<	* getWaitQueueLength throws IMSE if not synced
765	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
766		*/
767		public void testGetWaitQueueLengthIMSE() {
768		final Mutex sync = new Mutex();
769	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
769	>	final ConditionObject c = sync.newCondition();
770		try {
771		sync.getWaitQueueLength(c);
772		shouldThrow();
773		} catch (IllegalMonitorStateException success) {}
774	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
775		}
776
609	–
777		/**
778	<	* getWaitingThreads throws IAE if not owned
778	>	* getWaitingThreads throws IllegalArgumentException if not owned
779		*/
780		public void testGetWaitingThreadsIAE() {
781		final Mutex sync = new Mutex();
782	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
782	>	final ConditionObject c = sync.newCondition();
783		final Mutex sync2 = new Mutex();
784		try {
785		sync2.getWaitingThreads(c);
786		shouldThrow();
787		} catch (IllegalArgumentException success) {}
788	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
789		}
790
791		/**
792	<	* getWaitingThreads throws IMSE if not synced
792	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
793		*/
794		public void testGetWaitingThreadsIMSE() {
795		final Mutex sync = new Mutex();
796	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
796	>	final ConditionObject c = sync.newCondition();
797		try {
798		sync.getWaitingThreads(c);
799		shouldThrow();
800		} catch (IllegalMonitorStateException success) {}
801	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
802		}
803
635	–
636	–
804		/**
805		* hasWaiters returns true when a thread is waiting, else false
806		*/
807	<	public void testHasWaiters() throws InterruptedException {
807	>	public void testHasWaiters() {
808		final Mutex sync = new Mutex();
809	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
810	<	Thread t = new Thread(new CheckedRunnable() {
809	>	final ConditionObject c = sync.newCondition();
810	>	final BooleanLatch acquired = new BooleanLatch();
811	>	Thread t = newStartedThread(new CheckedRunnable() {
812		public void realRun() throws InterruptedException {
813	<	sync.acquire(1);
814	<	threadAssertFalse(sync.hasWaiters(c));
815	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
813	>	sync.acquire();
814	>	assertHasWaitersLocked(sync, c, NO_THREADS);
815	>	assertFalse(sync.hasWaiters(c));
816	>	assertTrue(acquired.releaseShared(0));
817		c.await();
818	<	sync.release(1);
818	>	sync.release();
819		}});
820
821	<	t.start();
822	<	Thread.sleep(SHORT_DELAY_MS);
823	<	sync.acquire(1);
821	>	acquired.acquireShared(0);
822	>	sync.acquire();
823	>	assertHasWaitersLocked(sync, c, t);
824	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
825		assertTrue(sync.hasWaiters(c));
656	–	assertEquals(1, sync.getWaitQueueLength(c));
826		c.signal();
827	<	sync.release(1);
828	<	Thread.sleep(SHORT_DELAY_MS);
660	<	sync.acquire(1);
827	>	assertHasWaitersLocked(sync, c, NO_THREADS);
828	>	assertHasExclusiveQueuedThreads(sync, t);
829		assertFalse(sync.hasWaiters(c));
830	<	assertEquals(0, sync.getWaitQueueLength(c));
831	<	sync.release(1);
832	<	t.join(SHORT_DELAY_MS);
833	<	assertFalse(t.isAlive());
830	>	sync.release();
831	>
832	>	awaitTermination(t);
833	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
834		}
835
836		/**
837		* getWaitQueueLength returns number of waiting threads
838		*/
839	<	public void testGetWaitQueueLength() throws InterruptedException {
839	>	public void testGetWaitQueueLength() {
840		final Mutex sync = new Mutex();
841	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
842	<	Thread t1 = new Thread(new CheckedRunnable() {
841	>	final ConditionObject c = sync.newCondition();
842	>	final BooleanLatch acquired1 = new BooleanLatch();
843	>	final BooleanLatch acquired2 = new BooleanLatch();
844	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
845		public void realRun() throws InterruptedException {
846	<	sync.acquire(1);
847	<	threadAssertFalse(sync.hasWaiters(c));
848	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
846	>	sync.acquire();
847	>	assertHasWaitersLocked(sync, c, NO_THREADS);
848	>	assertEquals(0, sync.getWaitQueueLength(c));
849	>	assertTrue(acquired1.releaseShared(0));
850		c.await();
851	<	sync.release(1);
851	>	sync.release();
852		}});
853	+	acquired1.acquireShared(0);
854	+	sync.acquire();
855	+	assertHasWaitersLocked(sync, c, t1);
856	+	assertEquals(1, sync.getWaitQueueLength(c));
857	+	sync.release();
858
859	<	Thread t2 = new Thread(new CheckedRunnable() {
859	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
860		public void realRun() throws InterruptedException {
861	<	sync.acquire(1);
862	<	threadAssertTrue(sync.hasWaiters(c));
863	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
861	>	sync.acquire();
862	>	assertHasWaitersLocked(sync, c, t1);
863	>	assertEquals(1, sync.getWaitQueueLength(c));
864	>	assertTrue(acquired2.releaseShared(0));
865		c.await();
866	<	sync.release(1);
866	>	sync.release();
867		}});
868	<
869	<	t1.start();
870	<	Thread.sleep(SHORT_DELAY_MS);
871	<	t2.start();
695	<	Thread.sleep(SHORT_DELAY_MS);
696	<	sync.acquire(1);
697	<	assertTrue(sync.hasWaiters(c));
868	>	acquired2.acquireShared(0);
869	>	sync.acquire();
870	>	assertHasWaitersLocked(sync, c, t1, t2);
871	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
872		assertEquals(2, sync.getWaitQueueLength(c));
873		c.signalAll();
874	<	sync.release(1);
875	<	Thread.sleep(SHORT_DELAY_MS);
702	<	sync.acquire(1);
703	<	assertFalse(sync.hasWaiters(c));
874	>	assertHasWaitersLocked(sync, c, NO_THREADS);
875	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
876		assertEquals(0, sync.getWaitQueueLength(c));
877	<	sync.release(1);
878	<	t1.join(SHORT_DELAY_MS);
879	<	t2.join(SHORT_DELAY_MS);
880	<	assertFalse(t1.isAlive());
881	<	assertFalse(t2.isAlive());
877	>	sync.release();
878	>
879	>	awaitTermination(t1);
880	>	awaitTermination(t2);
881	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
882		}
883
884		/**
885		* getWaitingThreads returns only and all waiting threads
886		*/
887	<	public void testGetWaitingThreads() throws InterruptedException {
887	>	public void testGetWaitingThreads() {
888		final Mutex sync = new Mutex();
889	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
890	<	Thread t1 = new Thread(new CheckedRunnable() {
889	>	final ConditionObject c = sync.newCondition();
890	>	final BooleanLatch acquired1 = new BooleanLatch();
891	>	final BooleanLatch acquired2 = new BooleanLatch();
892	>	final Thread t1 = new Thread(new CheckedRunnable() {
893		public void realRun() throws InterruptedException {
894	<	sync.acquire(1);
895	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
894	>	sync.acquire();
895	>	assertHasWaitersLocked(sync, c, NO_THREADS);
896	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
897	>	assertTrue(acquired1.releaseShared(0));
898		c.await();
899	<	sync.release(1);
899	>	sync.release();
900		}});
901
902	<	Thread t2 = new Thread(new CheckedRunnable() {
902	>	final Thread t2 = new Thread(new CheckedRunnable() {
903		public void realRun() throws InterruptedException {
904	<	sync.acquire(1);
905	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
904	>	sync.acquire();
905	>	assertHasWaitersLocked(sync, c, t1);
906	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
907	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
908	>	assertEquals(1, sync.getWaitingThreads(c).size());
909	>	assertTrue(acquired2.releaseShared(0));
910		c.await();
911	<	sync.release(1);
911	>	sync.release();
912		}});
913
914	<	sync.acquire(1);
915	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
916	<	sync.release(1);
917	<	t1.start();
918	<	Thread.sleep(SHORT_DELAY_MS);
919	<	t2.start();
920	<	Thread.sleep(SHORT_DELAY_MS);
741	<	sync.acquire(1);
742	<	assertTrue(sync.hasWaiters(c));
743	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
744	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
745	<	c.signalAll();
746	<	sync.release(1);
747	<	Thread.sleep(SHORT_DELAY_MS);
748	<	sync.acquire(1);
749	<	assertFalse(sync.hasWaiters(c));
750	<	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	<	}
914	>	sync.acquire();
915	>	assertHasWaitersLocked(sync, c, NO_THREADS);
916	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
917	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
918	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
919	>	assertEquals(0, sync.getWaitingThreads(c).size());
920	>	sync.release();
921
922	+	t1.start();
923	+	acquired1.acquireShared(0);
924	+	sync.acquire();
925	+	assertHasWaitersLocked(sync, c, t1);
926	+	assertTrue(sync.getWaitingThreads(c).contains(t1));
927	+	assertFalse(sync.getWaitingThreads(c).contains(t2));
928	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
929	+	assertEquals(1, sync.getWaitingThreads(c).size());
930	+	sync.release();
931
932	+	t2.start();
933	+	acquired2.acquireShared(0);
934	+	sync.acquire();
935	+	assertHasWaitersLocked(sync, c, t1, t2);
936	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
937	+	assertTrue(sync.getWaitingThreads(c).contains(t1));
938	+	assertTrue(sync.getWaitingThreads(c).contains(t2));
939	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
940	+	assertEquals(2, sync.getWaitingThreads(c).size());
941	+	c.signalAll();
942	+	assertHasWaitersLocked(sync, c, NO_THREADS);
943	+	assertHasExclusiveQueuedThreads(sync, t1, t2);
944	+	assertFalse(sync.getWaitingThreads(c).contains(t1));
945	+	assertFalse(sync.getWaitingThreads(c).contains(t2));
946	+	assertTrue(sync.getWaitingThreads(c).isEmpty());
947	+	assertEquals(0, sync.getWaitingThreads(c).size());
948	+	sync.release();
949	+
950	+	awaitTermination(t1);
951	+	awaitTermination(t2);
952	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
953	+	}
954
955		/**
956	<	* awaitUninterruptibly doesn't abort on interrupt
956	>	* awaitUninterruptibly is uninterruptible
957		*/
958	<	public void testAwaitUninterruptibly() throws InterruptedException {
958	>	public void testAwaitUninterruptibly() {
959		final Mutex sync = new Mutex();
960	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
961	<	Thread t = new Thread(new CheckedRunnable() {
960	>	final ConditionObject c = sync.newCondition();
961	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
962	>	Thread t = newStartedThread(new CheckedRunnable() {
963		public void realRun() {
964	<	sync.acquire(1);
964	>	sync.acquire();
965	>	assertTrue(pleaseInterrupt.releaseShared(0));
966		c.awaitUninterruptibly();
967	<	sync.release(1);
967	>	assertTrue(Thread.interrupted());
968	>	assertHasWaitersLocked(sync, c, NO_THREADS);
969	>	sync.release();
970		}});
971
972	<	t.start();
973	<	Thread.sleep(SHORT_DELAY_MS);
972	>	pleaseInterrupt.acquireShared(0);
973	>	sync.acquire();
974	>	assertHasWaitersLocked(sync, c, t);
975	>	sync.release();
976		t.interrupt();
977	<	sync.acquire(1);
977	>	assertHasWaitersUnlocked(sync, c, t);
978	>	assertThreadStaysAlive(t);
979	>	sync.acquire();
980	>	assertHasWaitersLocked(sync, c, t);
981	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
982		c.signal();
983	<	sync.release(1);
984	<	t.join(SHORT_DELAY_MS);
985	<	assertFalse(t.isAlive());
986	<	}
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());
983	>	assertHasWaitersLocked(sync, c, NO_THREADS);
984	>	assertHasExclusiveQueuedThreads(sync, t);
985	>	sync.release();
986	>	awaitTermination(t);
987		}
988
989		/**
990	<	* awaitNanos is interruptible
990	>	* await/awaitNanos/awaitUntil is interruptible
991		*/
992	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
992	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
993	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
994	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
995	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
996	>	public void testInterruptible(final AwaitMethod awaitMethod) {
997		final Mutex sync = new Mutex();
998	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
999	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
998	>	final ConditionObject c = sync.newCondition();
999	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1000	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1001		public void realRun() throws InterruptedException {
1002	<	sync.acquire(1);
1003	<	c.awaitNanos(LONG_DELAY_MS * 1000L * 1000L);
1002	>	sync.acquire();
1003	>	assertTrue(pleaseInterrupt.releaseShared(0));
1004	>	await(c, awaitMethod);
1005		}});
1006
1007	<	t.start();
815	<	Thread.sleep(SHORT_DELAY_MS);
1007	>	pleaseInterrupt.acquireShared(0);
1008		t.interrupt();
1009	<	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());
1009	>	awaitTermination(t);
1010		}
1011
1012		/**
1013		* signalAll wakes up all threads
1014		*/
1015	<	public void testSignalAll() throws InterruptedException {
1016	<	final Mutex sync = new Mutex();
1017	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1018	<	Thread t1 = new Thread(new CheckedRunnable() {
1015	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1016	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1017	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1018	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1019	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1020	>	final Mutex sync = new Mutex();
1021	>	final ConditionObject c = sync.newCondition();
1022	>	final BooleanLatch acquired1 = new BooleanLatch();
1023	>	final BooleanLatch acquired2 = new BooleanLatch();
1024	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1025		public void realRun() throws InterruptedException {
1026	<	sync.acquire(1);
1027	<	c.await();
1028	<	sync.release(1);
1026	>	sync.acquire();
1027	>	acquired1.releaseShared(0);
1028	>	await(c, awaitMethod);
1029	>	sync.release();
1030		}});
1031
1032	<	Thread t2 = new Thread(new CheckedRunnable() {
1032	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1033		public void realRun() throws InterruptedException {
1034	<	sync.acquire(1);
1035	<	c.await();
1036	<	sync.release(1);
1034	>	sync.acquire();
1035	>	acquired2.releaseShared(0);
1036	>	await(c, awaitMethod);
1037	>	sync.release();
1038		}});
1039
1040	<	t1.start();
1041	<	t2.start();
1042	<	Thread.sleep(SHORT_DELAY_MS);
1043	<	sync.acquire(1);
1040	>	acquired1.acquireShared(0);
1041	>	acquired2.acquireShared(0);
1042	>	sync.acquire();
1043	>	assertHasWaitersLocked(sync, c, t1, t2);
1044	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1045		c.signalAll();
1046	<	sync.release(1);
1047	<	t1.join(SHORT_DELAY_MS);
1048	<	t2.join(SHORT_DELAY_MS);
1049	<	assertFalse(t1.isAlive());
1050	<	assertFalse(t2.isAlive());
1046	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1047	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1048	>	sync.release();
1049	>	awaitTermination(t1);
1050	>	awaitTermination(t2);
1051		}
1052
873	–
1053		/**
1054		* toString indicates current state
1055		*/
1056		public void testToString() {
1057		Mutex sync = new Mutex();
1058	<	String us = sync.toString();
1059	<	assertTrue(us.indexOf("State = 0") >= 0);
1060	<	sync.acquire(1);
882	<	String ls = sync.toString();
883	<	assertTrue(ls.indexOf("State = " + Mutex.LOCKED) >= 0);
1058	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1059	>	sync.acquire();
1060	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1061		}
1062
1063		/**
1064	<	* A serialized AQS deserializes with current state
1065	<	*/
1066	<	public void testSerialization() throws Exception {
1067	<	Mutex l = new Mutex();
1068	<	l.acquire(1);
1069	<	assertTrue(l.isHeldExclusively());
1070	<
1071	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1072	<	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	<	}
1064	>	* A serialized AQS deserializes with current state, but no queued threads
1065	>	*/
1066	>	public void testSerialization() {
1067	>	Mutex sync = new Mutex();
1068	>	assertFalse(serialClone(sync).isHeldExclusively());
1069	>	sync.acquire();
1070	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1071	>	waitForQueuedThread(sync, t);
1072	>	assertTrue(sync.isHeldExclusively());
1073
1074	+	Mutex clone = serialClone(sync);
1075	+	assertTrue(clone.isHeldExclusively());
1076	+	assertHasExclusiveQueuedThreads(sync, t);
1077	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1078	+	t.interrupt();
1079	+	awaitTermination(t);
1080	+	sync.release();
1081	+	assertFalse(sync.isHeldExclusively());
1082	+	assertTrue(clone.isHeldExclusively());
1083	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1084	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1085	+	}
1086
1087		/**
1088		* tryReleaseShared setting state changes getState
#	Line 909 | Line 1090 | public class AbstractQueuedLongSynchroni
1090		public void testGetStateWithReleaseShared() {
1091		final BooleanLatch l = new BooleanLatch();
1092		assertFalse(l.isSignalled());
1093	<	l.releaseShared(0);
1093	>	assertTrue(l.releaseShared(0));
1094		assertTrue(l.isSignalled());
1095		}
1096
#	Line 919 | Line 1100 | public class AbstractQueuedLongSynchroni
1100		public void testReleaseShared() {
1101		final BooleanLatch l = new BooleanLatch();
1102		assertFalse(l.isSignalled());
1103	<	l.releaseShared(0);
1103	>	assertTrue(l.releaseShared(0));
1104		assertTrue(l.isSignalled());
1105	<	l.releaseShared(0);
1105	>	assertTrue(l.releaseShared(0));
1106		assertTrue(l.isSignalled());
1107		}
1108
1109		/**
1110		* acquireSharedInterruptibly returns after release, but not before
1111		*/
1112	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1112	>	public void testAcquireSharedInterruptibly() {
1113		final BooleanLatch l = new BooleanLatch();
1114
1115	<	Thread t = new Thread(new CheckedRunnable() {
1115	>	Thread t = newStartedThread(new CheckedRunnable() {
1116		public void realRun() throws InterruptedException {
1117	<	threadAssertFalse(l.isSignalled());
1117	>	assertFalse(l.isSignalled());
1118		l.acquireSharedInterruptibly(0);
1119	<	threadAssertTrue(l.isSignalled());
1119	>	assertTrue(l.isSignalled());
1120	>	l.acquireSharedInterruptibly(0);
1121	>	assertTrue(l.isSignalled());
1122		}});
1123
1124	<	t.start();
1124	>	waitForQueuedThread(l, t);
1125		assertFalse(l.isSignalled());
1126	<	Thread.sleep(SHORT_DELAY_MS);
1127	<	l.releaseShared(0);
1126	>	assertThreadStaysAlive(t);
1127	>	assertHasSharedQueuedThreads(l, t);
1128	>	assertTrue(l.releaseShared(0));
1129		assertTrue(l.isSignalled());
1130	<	t.join();
1130	>	awaitTermination(t);
1131		}
1132
949	–
1133		/**
1134	<	* acquireSharedTimed returns after release
1134	>	* tryAcquireSharedNanos returns after release, but not before
1135		*/
1136	<	public void testAsquireSharedTimed() throws InterruptedException {
1136	>	public void testTryAcquireSharedNanos() {
1137		final BooleanLatch l = new BooleanLatch();
1138
1139	<	Thread t = new Thread(new CheckedRunnable() {
1139	>	Thread t = newStartedThread(new CheckedRunnable() {
1140		public void realRun() throws InterruptedException {
1141	<	threadAssertFalse(l.isSignalled());
1142	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS * 1000L * 1000L));
1143	<	threadAssertTrue(l.isSignalled());
1141	>	assertFalse(l.isSignalled());
1142	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1143	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1144	>	assertTrue(l.isSignalled());
1145	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1146	>	assertTrue(l.isSignalled());
1147		}});
1148
1149	<	t.start();
1149	>	waitForQueuedThread(l, t);
1150		assertFalse(l.isSignalled());
1151	<	Thread.sleep(SHORT_DELAY_MS);
1152	<	l.releaseShared(0);
1151	>	assertThreadStaysAlive(t);
1152	>	assertTrue(l.releaseShared(0));
1153		assertTrue(l.isSignalled());
1154	<	t.join();
1154	>	awaitTermination(t);
1155		}
1156
1157		/**
1158	<	* acquireSharedInterruptibly throws IE if interrupted before released
1158	>	* acquireSharedInterruptibly is interruptible
1159		*/
1160	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1160	>	public void testAcquireSharedInterruptibly_Interruptible() {
1161		final BooleanLatch l = new BooleanLatch();
1162	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1162	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1163		public void realRun() throws InterruptedException {
1164	<	threadAssertFalse(l.isSignalled());
1164	>	assertFalse(l.isSignalled());
1165		l.acquireSharedInterruptibly(0);
1166		}});
1167
1168	<	t.start();
1168	>	waitForQueuedThread(l, t);
1169		assertFalse(l.isSignalled());
1170		t.interrupt();
1171	<	t.join();
1171	>	awaitTermination(t);
1172	>	assertFalse(l.isSignalled());
1173		}
1174
1175		/**
1176	<	* acquireSharedTimed throws IE if interrupted before released
1176	>	* tryAcquireSharedNanos is interruptible
1177		*/
1178	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1178	>	public void testTryAcquireSharedNanos_Interruptible() {
1179		final BooleanLatch l = new BooleanLatch();
1180	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1180	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1181		public void realRun() throws InterruptedException {
1182	<	threadAssertFalse(l.isSignalled());
1183	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS * 1000L * 1000L);
1182	>	assertFalse(l.isSignalled());
1183	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1184	>	l.tryAcquireSharedNanos(0, nanos);
1185		}});
1186
1187	<	t.start();
1000	<	Thread.sleep(SHORT_DELAY_MS);
1187	>	waitForQueuedThread(l, t);
1188		assertFalse(l.isSignalled());
1189		t.interrupt();
1190	<	t.join();
1190	>	awaitTermination(t);
1191	>	assertFalse(l.isSignalled());
1192		}
1193
1194		/**
1195	<	* acquireSharedTimed times out if not released before timeout
1195	>	* tryAcquireSharedNanos times out if not released before timeout
1196		*/
1197	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1197	>	public void testTryAcquireSharedNanos_Timeout() {
1198		final BooleanLatch l = new BooleanLatch();
1199	<	Thread t = new Thread(new CheckedRunnable() {
1199	>	final BooleanLatch observedQueued = new BooleanLatch();
1200	>	Thread t = newStartedThread(new CheckedRunnable() {
1201		public void realRun() throws InterruptedException {
1202	<	threadAssertFalse(l.isSignalled());
1203	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS * 1000L * 1000L));
1202	>	assertFalse(l.isSignalled());
1203	>	for (long millis = timeoutMillis();
1204	>	!observedQueued.isSignalled();
1205	>	millis *= 2) {
1206	>	long nanos = MILLISECONDS.toNanos(millis);
1207	>	long startTime = System.nanoTime();
1208	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1209	>	assertTrue(millisElapsedSince(startTime) >= millis);
1210	>	}
1211	>	assertFalse(l.isSignalled());
1212		}});
1213
1214	<	t.start();
1215	<	Thread.sleep(SHORT_DELAY_MS);
1214	>	waitForQueuedThread(l, t);
1215	>	observedQueued.releaseShared(0);
1216	>	assertFalse(l.isSignalled());
1217	>	awaitTermination(t);
1218		assertFalse(l.isSignalled());
1219	<	t.join();
1219	>	}
1220	>
1221	>	/**
1222	>	* awaitNanos/timed await with 0 wait times out immediately
1223	>	*/
1224	>	public void testAwait_Zero() throws InterruptedException {
1225	>	final Mutex sync = new Mutex();
1226	>	final ConditionObject c = sync.newCondition();
1227	>	sync.acquire();
1228	>	assertTrue(c.awaitNanos(0L) <= 0);
1229	>	assertFalse(c.await(0L, NANOSECONDS));
1230	>	sync.release();
1231	>	}
1232	>
1233	>	/**
1234	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1235	>	*/
1236	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1237	>	final Mutex sync = new Mutex();
1238	>	final ConditionObject c = sync.newCondition();
1239	>	sync.acquire();
1240	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1241	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1242	>	sync.release();
1243		}
1244
1245		}

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