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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.30 by jsr166, Sat Nov 21 02:33:20 2009 UTC vs.
Revision 1.57 by jsr166, Mon Jul 17 21:01:30 2017 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–
10	–	import junit.framework.*;
11	–	import java.util.*;
12	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.util.concurrent.locks.*;
11	<	import java.io.*;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.HashSet;
15	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer;
16	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer.ConditionObject;
17	>
18	>	import junit.framework.AssertionFailedError;
19	>	import junit.framework.Test;
20	>	import junit.framework.TestSuite;
21
22	+	@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom
23		public class AbstractQueuedSynchronizerTest extends JSR166TestCase {
24		public static void main(String[] args) {
25	<	junit.textui.TestRunner.run (suite());
25	>	main(suite(), args);
26		}
27		public static Test suite() {
28		return new TestSuite(AbstractQueuedSynchronizerTest.class);
29		}
30
31		/**
32	<	* A simple mutex class, adapted from the
33	<	* AbstractQueuedSynchronizer javadoc.  Exclusive acquire tests
34	<	* exercise this as a sample user extension.  Other
35	<	* methods/features of AbstractQueuedSynchronizerTest are tested
36	<	* via other test classes, including those for ReentrantLock,
31	<	* ReentrantReadWriteLock, and Semaphore
32	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
33	>	* acquire tests exercise this as a sample user extension.  Other
34	>	* methods/features of AbstractQueuedSynchronizer are tested via
35	>	* other test classes, including those for ReentrantLock,
36	>	* ReentrantReadWriteLock, and Semaphore.
37		*/
38		static class Mutex extends AbstractQueuedSynchronizer {
39	<	public boolean isHeldExclusively() { return getState() == 1; }
39	>	/** An eccentric value for locked synchronizer state. */
40	>	static final int LOCKED = (1 << 31) | (1 << 15);
41
42	<	public boolean tryAcquire(int acquires) {
43	<	assertTrue(acquires == 1);
44	<	return compareAndSetState(0, 1);
42	>	static final int UNLOCKED = 0;
43	>
44	>	@Override public boolean isHeldExclusively() {
45	>	int state = getState();
46	>	assertTrue(state == UNLOCKED || state == LOCKED);
47	>	return state == LOCKED;
48		}
49
50	<	public boolean tryRelease(int releases) {
51	<	if (getState() == 0) throw new IllegalMonitorStateException();
52	<	setState(0);
50	>	@Override public boolean tryAcquire(int acquires) {
51	>	assertEquals(LOCKED, acquires);
52	>	return compareAndSetState(UNLOCKED, LOCKED);
53	>	}
54	>
55	>	@Override public boolean tryRelease(int releases) {
56	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
57	>	assertEquals(LOCKED, releases);
58	>	setState(UNLOCKED);
59		return true;
60		}
61
62	<	public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); }
62	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
63	>	return tryAcquireNanos(LOCKED, nanos);
64	>	}
65
66	<	}
66	>	public boolean tryAcquire() {
67	>	return tryAcquire(LOCKED);
68	>	}
69	>
70	>	public boolean tryRelease() {
71	>	return tryRelease(LOCKED);
72	>	}
73	>
74	>	public void acquire() {
75	>	acquire(LOCKED);
76	>	}
77	>
78	>	public void acquireInterruptibly() throws InterruptedException {
79	>	acquireInterruptibly(LOCKED);
80	>	}
81
82	+	public void release() {
83	+	release(LOCKED);
84	+	}
85	+
86	+	public ConditionObject newCondition() {
87	+	return new ConditionObject();
88	+	}
89	+	}
90
91		/**
92		* A simple latch class, to test shared mode.
#	Line 56 | Line 95 | public class AbstractQueuedSynchronizerT
95		public boolean isSignalled() { return getState() != 0; }
96
97		public int tryAcquireShared(int ignore) {
98	<	return isSignalled()? 1 : -1;
98	>	return isSignalled() ? 1 : -1;
99		}
100
101		public boolean tryReleaseShared(int ignore) {
#	Line 71 | Line 110 | public class AbstractQueuedSynchronizerT
110		*/
111		class InterruptibleSyncRunnable extends CheckedRunnable {
112		final Mutex sync;
113	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
113	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
114		public void realRun() throws InterruptedException {
115	<	sync.acquireInterruptibly(1);
115	>	sync.acquireInterruptibly();
116		}
117		}
118
80	–
119		/**
120		* A runnable calling acquireInterruptibly that expects to be
121		* interrupted.
122		*/
123		class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
124		final Mutex sync;
125	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
125	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
126		public void realRun() throws InterruptedException {
127	<	sync.acquireInterruptibly(1);
127	>	sync.acquireInterruptibly();
128	>	}
129	>	}
130	>
131	>	/** A constant to clarify calls to checking methods below. */
132	>	static final Thread[] NO_THREADS = new Thread[0];
133	>
134	>	/**
135	>	* Spin-waits until sync.isQueued(t) becomes true.
136	>	*/
137	>	void waitForQueuedThread(AbstractQueuedSynchronizer sync, Thread t) {
138	>	long startTime = System.nanoTime();
139	>	while (!sync.isQueued(t)) {
140	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
141	>	throw new AssertionFailedError("timed out");
142	>	Thread.yield();
143	>	}
144	>	assertTrue(t.isAlive());
145	>	}
146	>
147	>	/**
148	>	* Checks that sync has exactly the given queued threads.
149	>	*/
150	>	void assertHasQueuedThreads(AbstractQueuedSynchronizer sync,
151	>	Thread... expected) {
152	>	Collection<Thread> actual = sync.getQueuedThreads();
153	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
154	>	assertEquals(expected.length, sync.getQueueLength());
155	>	assertEquals(expected.length, actual.size());
156	>	assertEquals(expected.length == 0, actual.isEmpty());
157	>	assertEquals(new HashSet<Thread>(actual),
158	>	new HashSet<Thread>(Arrays.asList(expected)));
159	>	}
160	>
161	>	/**
162	>	* Checks that sync has exactly the given (exclusive) queued threads.
163	>	*/
164	>	void assertHasExclusiveQueuedThreads(AbstractQueuedSynchronizer sync,
165	>	Thread... expected) {
166	>	assertHasQueuedThreads(sync, expected);
167	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
168	>	new HashSet<Thread>(sync.getQueuedThreads()));
169	>	assertEquals(0, sync.getSharedQueuedThreads().size());
170	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
171	>	}
172	>
173	>	/**
174	>	* Checks that sync has exactly the given (shared) queued threads.
175	>	*/
176	>	void assertHasSharedQueuedThreads(AbstractQueuedSynchronizer sync,
177	>	Thread... expected) {
178	>	assertHasQueuedThreads(sync, expected);
179	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
180	>	new HashSet<Thread>(sync.getQueuedThreads()));
181	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
182	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
183	>	}
184	>
185	>	/**
186	>	* Checks that condition c has exactly the given waiter threads,
187	>	* after acquiring mutex.
188	>	*/
189	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
190	>	Thread... threads) {
191	>	sync.acquire();
192	>	assertHasWaitersLocked(sync, c, threads);
193	>	sync.release();
194	>	}
195	>
196	>	/**
197	>	* Checks that condition c has exactly the given waiter threads.
198	>	*/
199	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
200	>	Thread... threads) {
201	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
202	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
203	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
204	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
205	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
206	>	new HashSet<Thread>(Arrays.asList(threads)));
207	>	}
208	>
209	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
210	>
211	>	/**
212	>	* Awaits condition using the specified AwaitMethod.
213	>	*/
214	>	void await(ConditionObject c, AwaitMethod awaitMethod)
215	>	throws InterruptedException {
216	>	long timeoutMillis = 2 * LONG_DELAY_MS;
217	>	switch (awaitMethod) {
218	>	case await:
219	>	c.await();
220	>	break;
221	>	case awaitTimed:
222	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
223	>	break;
224	>	case awaitNanos:
225	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
226	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
227	>	assertTrue(nanosRemaining > 0);
228	>	break;
229	>	case awaitUntil:
230	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
231	>	break;
232	>	default:
233	>	throw new AssertionError();
234		}
235		}
236
237		/**
238	+	* Checks that awaiting the given condition times out (using the
239	+	* default timeout duration).
240	+	*/
241	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
242	+	final long timeoutMillis = timeoutMillis();
243	+	final long startTime;
244	+	try {
245	+	switch (awaitMethod) {
246	+	case awaitTimed:
247	+	startTime = System.nanoTime();
248	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
249	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
250	+	break;
251	+	case awaitNanos:
252	+	startTime = System.nanoTime();
253	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
254	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
255	+	assertTrue(nanosRemaining <= 0);
256	+	assertTrue(nanosRemaining > -MILLISECONDS.toNanos(LONG_DELAY_MS));
257	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
258	+	break;
259	+	case awaitUntil:
260	+	// We shouldn't assume that nanoTime and currentTimeMillis
261	+	// use the same time source, so don't use nanoTime here.
262	+	java.util.Date delayedDate = delayedDate(timeoutMillis);
263	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
264	+	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
265	+	break;
266	+	default:
267	+	throw new UnsupportedOperationException();
268	+	}
269	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
270	+	}
271	+
272	+	/**
273		* isHeldExclusively is false upon construction
274		*/
275		public void testIsHeldExclusively() {
276	<	Mutex rl = new Mutex();
277	<	assertFalse(rl.isHeldExclusively());
276	>	Mutex sync = new Mutex();
277	>	assertFalse(sync.isHeldExclusively());
278		}
279
280		/**
281		* acquiring released sync succeeds
282		*/
283		public void testAcquire() {
284	<	Mutex rl = new Mutex();
285	<	rl.acquire(1);
286	<	assertTrue(rl.isHeldExclusively());
287	<	rl.release(1);
288	<	assertFalse(rl.isHeldExclusively());
284	>	Mutex sync = new Mutex();
285	>	sync.acquire();
286	>	assertTrue(sync.isHeldExclusively());
287	>	sync.release();
288	>	assertFalse(sync.isHeldExclusively());
289		}
290
291		/**
292	<	* tryAcquire on an released sync succeeds
292	>	* tryAcquire on a released sync succeeds
293		*/
294		public void testTryAcquire() {
295	<	Mutex rl = new Mutex();
296	<	assertTrue(rl.tryAcquire(1));
297	<	assertTrue(rl.isHeldExclusively());
298	<	rl.release(1);
295	>	Mutex sync = new Mutex();
296	>	assertTrue(sync.tryAcquire());
297	>	assertTrue(sync.isHeldExclusively());
298	>	sync.release();
299	>	assertFalse(sync.isHeldExclusively());
300		}
301
302		/**
303		* hasQueuedThreads reports whether there are waiting threads
304		*/
305	<	public void testhasQueuedThreads() throws InterruptedException {
305	>	public void testHasQueuedThreads() {
306		final Mutex sync = new Mutex();
127	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
128	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
307		assertFalse(sync.hasQueuedThreads());
308	<	sync.acquire(1);
309	<	t1.start();
310	<	Thread.sleep(SHORT_DELAY_MS);
308	>	sync.acquire();
309	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
310	>	waitForQueuedThread(sync, t1);
311		assertTrue(sync.hasQueuedThreads());
312	<	t2.start();
313	<	Thread.sleep(SHORT_DELAY_MS);
312	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
313	>	waitForQueuedThread(sync, t2);
314		assertTrue(sync.hasQueuedThreads());
315		t1.interrupt();
316	<	Thread.sleep(SHORT_DELAY_MS);
316	>	awaitTermination(t1);
317		assertTrue(sync.hasQueuedThreads());
318	<	sync.release(1);
319	<	Thread.sleep(SHORT_DELAY_MS);
318	>	sync.release();
319	>	awaitTermination(t2);
320		assertFalse(sync.hasQueuedThreads());
143	–	t1.join();
144	–	t2.join();
321		}
322
323		/**
324	<	* isQueued(null) throws NPE
324	>	* isQueued(null) throws NullPointerException
325		*/
326		public void testIsQueuedNPE() {
327		final Mutex sync = new Mutex();
#	Line 156 | Line 332 | public class AbstractQueuedSynchronizerT
332		}
333
334		/**
335	<	* isQueued reports whether a thread is queued.
335	>	* isQueued reports whether a thread is queued
336		*/
337	<	public void testIsQueued() throws InterruptedException {
337	>	public void testIsQueued() {
338		final Mutex sync = new Mutex();
339		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
340		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
341		assertFalse(sync.isQueued(t1));
342		assertFalse(sync.isQueued(t2));
343	<	sync.acquire(1);
343	>	sync.acquire();
344		t1.start();
345	<	Thread.sleep(SHORT_DELAY_MS);
345	>	waitForQueuedThread(sync, t1);
346		assertTrue(sync.isQueued(t1));
347	+	assertFalse(sync.isQueued(t2));
348		t2.start();
349	<	Thread.sleep(SHORT_DELAY_MS);
349	>	waitForQueuedThread(sync, t2);
350		assertTrue(sync.isQueued(t1));
351		assertTrue(sync.isQueued(t2));
352		t1.interrupt();
353	<	Thread.sleep(SHORT_DELAY_MS);
353	>	awaitTermination(t1);
354		assertFalse(sync.isQueued(t1));
355		assertTrue(sync.isQueued(t2));
356	<	sync.release(1);
357	<	Thread.sleep(SHORT_DELAY_MS);
356	>	sync.release();
357	>	awaitTermination(t2);
358		assertFalse(sync.isQueued(t1));
182	–	Thread.sleep(SHORT_DELAY_MS);
359		assertFalse(sync.isQueued(t2));
184	–	t1.join();
185	–	t2.join();
360		}
361
362		/**
363		* getFirstQueuedThread returns first waiting thread or null if none
364		*/
365	<	public void testGetFirstQueuedThread() throws InterruptedException {
365	>	public void testGetFirstQueuedThread() {
366		final Mutex sync = new Mutex();
193	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
194	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
367		assertNull(sync.getFirstQueuedThread());
368	<	sync.acquire(1);
369	<	t1.start();
370	<	Thread.sleep(SHORT_DELAY_MS);
368	>	sync.acquire();
369	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
370	>	waitForQueuedThread(sync, t1);
371		assertEquals(t1, sync.getFirstQueuedThread());
372	<	t2.start();
373	<	Thread.sleep(SHORT_DELAY_MS);
372	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
373	>	waitForQueuedThread(sync, t2);
374		assertEquals(t1, sync.getFirstQueuedThread());
375		t1.interrupt();
376	<	Thread.sleep(SHORT_DELAY_MS);
205	<	Thread.sleep(SHORT_DELAY_MS);
376	>	awaitTermination(t1);
377		assertEquals(t2, sync.getFirstQueuedThread());
378	<	sync.release(1);
379	<	Thread.sleep(SHORT_DELAY_MS);
378	>	sync.release();
379	>	awaitTermination(t2);
380		assertNull(sync.getFirstQueuedThread());
210	–	t1.join();
211	–	t2.join();
381		}
382
214	–
383		/**
384		* hasContended reports false if no thread has ever blocked, else true
385		*/
386	<	public void testHasContended() throws InterruptedException {
386	>	public void testHasContended() {
387		final Mutex sync = new Mutex();
220	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
221	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
388		assertFalse(sync.hasContended());
389	<	sync.acquire(1);
390	<	t1.start();
391	<	Thread.sleep(SHORT_DELAY_MS);
389	>	sync.acquire();
390	>	assertFalse(sync.hasContended());
391	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
392	>	waitForQueuedThread(sync, t1);
393		assertTrue(sync.hasContended());
394	<	t2.start();
395	<	Thread.sleep(SHORT_DELAY_MS);
394	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
395	>	waitForQueuedThread(sync, t2);
396		assertTrue(sync.hasContended());
397		t1.interrupt();
398	<	Thread.sleep(SHORT_DELAY_MS);
398	>	awaitTermination(t1);
399		assertTrue(sync.hasContended());
400	<	sync.release(1);
401	<	Thread.sleep(SHORT_DELAY_MS);
400	>	sync.release();
401	>	awaitTermination(t2);
402		assertTrue(sync.hasContended());
236	–	t1.join();
237	–	t2.join();
403		}
404
405		/**
406	<	* getQueuedThreads includes waiting threads
406	>	* getQueuedThreads returns all waiting threads
407		*/
408	<	public void testGetQueuedThreads() throws InterruptedException {
408	>	public void testGetQueuedThreads() {
409		final Mutex sync = new Mutex();
410		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
411		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
412	<	assertTrue(sync.getQueuedThreads().isEmpty());
413	<	sync.acquire(1);
414	<	assertTrue(sync.getQueuedThreads().isEmpty());
412	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
413	>	sync.acquire();
414	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
415		t1.start();
416	<	Thread.sleep(SHORT_DELAY_MS);
416	>	waitForQueuedThread(sync, t1);
417	>	assertHasExclusiveQueuedThreads(sync, t1);
418		assertTrue(sync.getQueuedThreads().contains(t1));
419	+	assertFalse(sync.getQueuedThreads().contains(t2));
420		t2.start();
421	<	Thread.sleep(SHORT_DELAY_MS);
421	>	waitForQueuedThread(sync, t2);
422	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
423		assertTrue(sync.getQueuedThreads().contains(t1));
424		assertTrue(sync.getQueuedThreads().contains(t2));
425		t1.interrupt();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	assertFalse(sync.getQueuedThreads().contains(t1));
428	<	assertTrue(sync.getQueuedThreads().contains(t2));
429	<	sync.release(1);
430	<	Thread.sleep(SHORT_DELAY_MS);
263	<	assertTrue(sync.getQueuedThreads().isEmpty());
264	<	t1.join();
265	<	t2.join();
426	>	awaitTermination(t1);
427	>	assertHasExclusiveQueuedThreads(sync, t2);
428	>	sync.release();
429	>	awaitTermination(t2);
430	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
431		}
432
433		/**
434	<	* getExclusiveQueuedThreads includes waiting threads
434	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
435		*/
436	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
436	>	public void testGetExclusiveQueuedThreads() {
437		final Mutex sync = new Mutex();
438		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
439		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
440	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
441	<	sync.acquire(1);
442	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
440	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
441	>	sync.acquire();
442	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
443		t1.start();
444	<	Thread.sleep(SHORT_DELAY_MS);
444	>	waitForQueuedThread(sync, t1);
445	>	assertHasExclusiveQueuedThreads(sync, t1);
446		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
447	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
448		t2.start();
449	<	Thread.sleep(SHORT_DELAY_MS);
449	>	waitForQueuedThread(sync, t2);
450	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
451		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
452		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
453		t1.interrupt();
454	<	Thread.sleep(SHORT_DELAY_MS);
455	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
456	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
457	<	sync.release(1);
458	<	Thread.sleep(SHORT_DELAY_MS);
291	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
292	<	t1.join();
293	<	t2.join();
454	>	awaitTermination(t1);
455	>	assertHasExclusiveQueuedThreads(sync, t2);
456	>	sync.release();
457	>	awaitTermination(t2);
458	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
459		}
460
461		/**
462		* getSharedQueuedThreads does not include exclusively waiting threads
463		*/
464	<	public void testGetSharedQueuedThreads() throws InterruptedException {
464	>	public void testGetSharedQueuedThreads_Exclusive() {
465		final Mutex sync = new Mutex();
301	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
302	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
466		assertTrue(sync.getSharedQueuedThreads().isEmpty());
467	<	sync.acquire(1);
467	>	sync.acquire();
468		assertTrue(sync.getSharedQueuedThreads().isEmpty());
469	<	t1.start();
470	<	Thread.sleep(SHORT_DELAY_MS);
469	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
470	>	waitForQueuedThread(sync, t1);
471		assertTrue(sync.getSharedQueuedThreads().isEmpty());
472	<	t2.start();
473	<	Thread.sleep(SHORT_DELAY_MS);
472	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
473	>	waitForQueuedThread(sync, t2);
474		assertTrue(sync.getSharedQueuedThreads().isEmpty());
475		t1.interrupt();
476	<	Thread.sleep(SHORT_DELAY_MS);
476	>	awaitTermination(t1);
477		assertTrue(sync.getSharedQueuedThreads().isEmpty());
478	<	sync.release(1);
479	<	Thread.sleep(SHORT_DELAY_MS);
478	>	sync.release();
479	>	awaitTermination(t2);
480		assertTrue(sync.getSharedQueuedThreads().isEmpty());
318	–	t1.join();
319	–	t2.join();
481		}
482
483		/**
484	<	* tryAcquireNanos is interruptible.
484	>	* getSharedQueuedThreads returns all shared waiting threads
485		*/
486	<	public void testInterruptedException2() throws InterruptedException {
486	>	public void testGetSharedQueuedThreads_Shared() {
487	>	final BooleanLatch l = new BooleanLatch();
488	>	assertHasSharedQueuedThreads(l, NO_THREADS);
489	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
490	>	public void realRun() throws InterruptedException {
491	>	l.acquireSharedInterruptibly(0);
492	>	}});
493	>	waitForQueuedThread(l, t1);
494	>	assertHasSharedQueuedThreads(l, t1);
495	>	Thread t2 = newStartedThread(new CheckedRunnable() {
496	>	public void realRun() throws InterruptedException {
497	>	l.acquireSharedInterruptibly(0);
498	>	}});
499	>	waitForQueuedThread(l, t2);
500	>	assertHasSharedQueuedThreads(l, t1, t2);
501	>	t1.interrupt();
502	>	awaitTermination(t1);
503	>	assertHasSharedQueuedThreads(l, t2);
504	>	assertTrue(l.releaseShared(0));
505	>	awaitTermination(t2);
506	>	assertHasSharedQueuedThreads(l, NO_THREADS);
507	>	}
508	>
509	>	/**
510	>	* tryAcquireNanos is interruptible
511	>	*/
512	>	public void testTryAcquireNanos_Interruptible() {
513		final Mutex sync = new Mutex();
514	<	sync.acquire(1);
515	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
514	>	sync.acquire();
515	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
516		public void realRun() throws InterruptedException {
517	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
517	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
518		}});
519
520	<	t.start();
520	>	waitForQueuedThread(sync, t);
521		t.interrupt();
522	<	t.join();
522	>	awaitTermination(t);
523		}
524
338	–
525		/**
526	<	* TryAcquire on exclusively held sync fails
526	>	* tryAcquire on exclusively held sync fails
527		*/
528	<	public void testTryAcquireWhenSynced() throws InterruptedException {
528	>	public void testTryAcquireWhenSynced() {
529		final Mutex sync = new Mutex();
530	<	sync.acquire(1);
531	<	Thread t = new Thread(new CheckedRunnable() {
530	>	sync.acquire();
531	>	Thread t = newStartedThread(new CheckedRunnable() {
532		public void realRun() {
533	<	threadAssertFalse(sync.tryAcquire(1));
533	>	assertFalse(sync.tryAcquire());
534		}});
535
536	<	t.start();
537	<	t.join();
352	<	sync.release(1);
536	>	awaitTermination(t);
537	>	sync.release();
538		}
539
540		/**
541		* tryAcquireNanos on an exclusively held sync times out
542		*/
543	<	public void testAcquireNanos_Timeout() throws InterruptedException {
543	>	public void testAcquireNanos_Timeout() {
544		final Mutex sync = new Mutex();
545	<	sync.acquire(1);
546	<	Thread t = new Thread(new CheckedRunnable() {
545	>	sync.acquire();
546	>	Thread t = newStartedThread(new CheckedRunnable() {
547		public void realRun() throws InterruptedException {
548	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
548	>	long startTime = System.nanoTime();
549	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
550	>	assertFalse(sync.tryAcquireNanos(nanos));
551	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
552		}});
553
554	<	t.start();
555	<	t.join();
368	<	sync.release(1);
554	>	awaitTermination(t);
555	>	sync.release();
556		}
557
371	–
558		/**
559		* getState is true when acquired and false when not
560		*/
561	<	public void testGetState() throws InterruptedException {
561	>	public void testGetState() {
562		final Mutex sync = new Mutex();
563	<	sync.acquire(1);
563	>	sync.acquire();
564		assertTrue(sync.isHeldExclusively());
565	<	sync.release(1);
565	>	sync.release();
566		assertFalse(sync.isHeldExclusively());
567	<	Thread t = new Thread(new CheckedRunnable() {
567	>
568	>	final BooleanLatch acquired = new BooleanLatch();
569	>	final BooleanLatch done = new BooleanLatch();
570	>	Thread t = newStartedThread(new CheckedRunnable() {
571		public void realRun() throws InterruptedException {
572	<	sync.acquire(1);
573	<	Thread.sleep(SMALL_DELAY_MS);
574	<	sync.release(1);
572	>	sync.acquire();
573	>	assertTrue(acquired.releaseShared(0));
574	>	done.acquireShared(0);
575	>	sync.release();
576		}});
577
578	<	t.start();
389	<	Thread.sleep(SHORT_DELAY_MS);
578	>	acquired.acquireShared(0);
579		assertTrue(sync.isHeldExclusively());
580	<	t.join();
580	>	assertTrue(done.releaseShared(0));
581	>	awaitTermination(t);
582		assertFalse(sync.isHeldExclusively());
583		}
584
395	–
396	–	/**
397	–	* acquireInterruptibly is interruptible.
398	–	*/
399	–	public void testAcquireInterruptibly1() throws InterruptedException {
400	–	final Mutex sync = new Mutex();
401	–	sync.acquire(1);
402	–	Thread t = new Thread(new InterruptedSyncRunnable(sync));
403	–
404	–	t.start();
405	–	Thread.sleep(SHORT_DELAY_MS);
406	–	t.interrupt();
407	–	Thread.sleep(SHORT_DELAY_MS);
408	–	sync.release(1);
409	–	t.join();
410	–	}
411	–
585		/**
586		* acquireInterruptibly succeeds when released, else is interruptible
587		*/
588	<	public void testAcquireInterruptibly2() throws InterruptedException {
588	>	public void testAcquireInterruptibly() throws InterruptedException {
589		final Mutex sync = new Mutex();
590	<	sync.acquireInterruptibly(1);
591	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
592	<	t.start();
590	>	final BooleanLatch threadStarted = new BooleanLatch();
591	>	sync.acquireInterruptibly();
592	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
593	>	public void realRun() throws InterruptedException {
594	>	assertTrue(threadStarted.releaseShared(0));
595	>	sync.acquireInterruptibly();
596	>	}});
597	>
598	>	threadStarted.acquireShared(0);
599	>	waitForQueuedThread(sync, t);
600		t.interrupt();
601	+	awaitTermination(t);
602		assertTrue(sync.isHeldExclusively());
422	–	t.join();
603		}
604
605		/**
#	Line 427 | Line 607 | public class AbstractQueuedSynchronizerT
607		*/
608		public void testOwns() {
609		final Mutex sync = new Mutex();
610	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
610	>	final ConditionObject c = sync.newCondition();
611		final Mutex sync2 = new Mutex();
612		assertTrue(sync.owns(c));
613		assertFalse(sync2.owns(c));
#	Line 436 | Line 616 | public class AbstractQueuedSynchronizerT
616		/**
617		* Calling await without holding sync throws IllegalMonitorStateException
618		*/
619	<	public void testAwait_IllegalMonitor() throws InterruptedException {
619	>	public void testAwait_IMSE() {
620		final Mutex sync = new Mutex();
621	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
622	<	try {
623	<	c.await();
624	<	shouldThrow();
625	<	} catch (IllegalMonitorStateException success) {}
621	>	final ConditionObject c = sync.newCondition();
622	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
623	>	long startTime = System.nanoTime();
624	>	try {
625	>	await(c, awaitMethod);
626	>	shouldThrow();
627	>	} catch (IllegalMonitorStateException success) {
628	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
629	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
630	>	}
631		}
632
633		/**
634		* Calling signal without holding sync throws IllegalMonitorStateException
635		*/
636	<	public void testSignal_IllegalMonitor() {
636	>	public void testSignal_IMSE() {
637		final Mutex sync = new Mutex();
638	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
638	>	final ConditionObject c = sync.newCondition();
639		try {
640		c.signal();
641		shouldThrow();
642		} catch (IllegalMonitorStateException success) {}
643	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
644		}
645
646		/**
647	<	* awaitNanos without a signal times out
647	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
648		*/
649	<	public void testAwaitNanos_Timeout() throws InterruptedException {
649	>	public void testSignalAll_IMSE() {
650		final Mutex sync = new Mutex();
651	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
652	<	sync.acquire(1);
653	<	long t = c.awaitNanos(100);
654	<	assertTrue(t <= 0);
655	<	sync.release(1);
470	<	}
471	<
472	<	/**
473	<	*  Timed await without a signal times out
474	<	*/
475	<	public void testAwait_Timeout() throws InterruptedException {
476	<	final Mutex sync = new Mutex();
477	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
478	<	sync.acquire(1);
479	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
480	<	sync.release(1);
651	>	final ConditionObject c = sync.newCondition();
652	>	try {
653	>	c.signalAll();
654	>	shouldThrow();
655	>	} catch (IllegalMonitorStateException success) {}
656		}
657
658		/**
659	<	* awaitUntil without a signal times out
659	>	* await/awaitNanos/awaitUntil without a signal times out
660		*/
661	<	public void testAwaitUntil_Timeout() throws InterruptedException {
661	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
662	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
663	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
664	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
665		final Mutex sync = new Mutex();
666	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
667	<	sync.acquire(1);
668	<	java.util.Date d = new java.util.Date();
669	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
492	<	sync.release(1);
666	>	final ConditionObject c = sync.newCondition();
667	>	sync.acquire();
668	>	assertAwaitTimesOut(c, awaitMethod);
669	>	sync.release();
670		}
671
672		/**
673	<	* await returns when signalled
673	>	* await/awaitNanos/awaitUntil returns when signalled
674		*/
675	<	public void testAwait() throws InterruptedException {
675	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
676	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
677	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
678	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
679	>	public void testSignal(final AwaitMethod awaitMethod) {
680		final Mutex sync = new Mutex();
681	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
682	<	Thread t = new Thread(new CheckedRunnable() {
681	>	final ConditionObject c = sync.newCondition();
682	>	final BooleanLatch acquired = new BooleanLatch();
683	>	Thread t = newStartedThread(new CheckedRunnable() {
684		public void realRun() throws InterruptedException {
685	<	sync.acquire(1);
686	<	c.await();
687	<	sync.release(1);
685	>	sync.acquire();
686	>	assertTrue(acquired.releaseShared(0));
687	>	await(c, awaitMethod);
688	>	sync.release();
689		}});
690
691	<	t.start();
692	<	Thread.sleep(SHORT_DELAY_MS);
693	<	sync.acquire(1);
691	>	acquired.acquireShared(0);
692	>	sync.acquire();
693	>	assertHasWaitersLocked(sync, c, t);
694	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
695		c.signal();
696	<	sync.release(1);
697	<	t.join(SHORT_DELAY_MS);
698	<	assertFalse(t.isAlive());
696	>	assertHasWaitersLocked(sync, c, NO_THREADS);
697	>	assertHasExclusiveQueuedThreads(sync, t);
698	>	sync.release();
699	>	awaitTermination(t);
700		}
701
517	–
518	–
702		/**
703	<	* hasWaiters throws NPE if null
703	>	* hasWaiters(null) throws NullPointerException
704		*/
705		public void testHasWaitersNPE() {
706		final Mutex sync = new Mutex();
#	Line 528 | Line 711 | public class AbstractQueuedSynchronizerT
711		}
712
713		/**
714	<	* getWaitQueueLength throws NPE if null
714	>	* getWaitQueueLength(null) throws NullPointerException
715		*/
716		public void testGetWaitQueueLengthNPE() {
717		final Mutex sync = new Mutex();
#	Line 538 | Line 721 | public class AbstractQueuedSynchronizerT
721		} catch (NullPointerException success) {}
722		}
723
541	–
724		/**
725	<	* getWaitingThreads throws NPE if null
725	>	* getWaitingThreads(null) throws NullPointerException
726		*/
727		public void testGetWaitingThreadsNPE() {
728		final Mutex sync = new Mutex();
#	Line 550 | Line 732 | public class AbstractQueuedSynchronizerT
732		} catch (NullPointerException success) {}
733		}
734
553	–
735		/**
736	<	* hasWaiters throws IAE if not owned
736	>	* hasWaiters throws IllegalArgumentException if not owned
737		*/
738		public void testHasWaitersIAE() {
739		final Mutex sync = new Mutex();
740	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
740	>	final ConditionObject c = sync.newCondition();
741		final Mutex sync2 = new Mutex();
742		try {
743		sync2.hasWaiters(c);
744		shouldThrow();
745		} catch (IllegalArgumentException success) {}
746	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
747		}
748
749		/**
750	<	* hasWaiters throws IMSE if not synced
750	>	* hasWaiters throws IllegalMonitorStateException if not synced
751		*/
752		public void testHasWaitersIMSE() {
753		final Mutex sync = new Mutex();
754	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
754	>	final ConditionObject c = sync.newCondition();
755		try {
756		sync.hasWaiters(c);
757		shouldThrow();
758		} catch (IllegalMonitorStateException success) {}
759	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
760		}
761
579	–
762		/**
763	<	* getWaitQueueLength throws IAE if not owned
763	>	* getWaitQueueLength throws IllegalArgumentException if not owned
764		*/
765		public void testGetWaitQueueLengthIAE() {
766		final Mutex sync = new Mutex();
767	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
767	>	final ConditionObject c = sync.newCondition();
768		final Mutex sync2 = new Mutex();
769		try {
770		sync2.getWaitQueueLength(c);
771		shouldThrow();
772		} catch (IllegalArgumentException success) {}
773	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
774		}
775
776		/**
777	<	* getWaitQueueLength throws IMSE if not synced
777	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
778		*/
779		public void testGetWaitQueueLengthIMSE() {
780		final Mutex sync = new Mutex();
781	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
781	>	final ConditionObject c = sync.newCondition();
782		try {
783		sync.getWaitQueueLength(c);
784		shouldThrow();
785		} catch (IllegalMonitorStateException success) {}
786	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
787		}
788
605	–
789		/**
790	<	* getWaitingThreads throws IAE if not owned
790	>	* getWaitingThreads throws IllegalArgumentException if not owned
791		*/
792		public void testGetWaitingThreadsIAE() {
793		final Mutex sync = new Mutex();
794	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
794	>	final ConditionObject c = sync.newCondition();
795		final Mutex sync2 = new Mutex();
796		try {
797		sync2.getWaitingThreads(c);
798		shouldThrow();
799		} catch (IllegalArgumentException success) {}
800	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
801		}
802
803		/**
804	<	* getWaitingThreads throws IMSE if not synced
804	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
805		*/
806		public void testGetWaitingThreadsIMSE() {
807		final Mutex sync = new Mutex();
808	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
808	>	final ConditionObject c = sync.newCondition();
809		try {
810		sync.getWaitingThreads(c);
811		shouldThrow();
812		} catch (IllegalMonitorStateException success) {}
813	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
814		}
815
631	–
632	–
816		/**
817		* hasWaiters returns true when a thread is waiting, else false
818		*/
819	<	public void testHasWaiters() throws InterruptedException {
819	>	public void testHasWaiters() {
820		final Mutex sync = new Mutex();
821	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
822	<	Thread t = new Thread(new CheckedRunnable() {
821	>	final ConditionObject c = sync.newCondition();
822	>	final BooleanLatch acquired = new BooleanLatch();
823	>	Thread t = newStartedThread(new CheckedRunnable() {
824		public void realRun() throws InterruptedException {
825	<	sync.acquire(1);
826	<	threadAssertFalse(sync.hasWaiters(c));
827	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
825	>	sync.acquire();
826	>	assertHasWaitersLocked(sync, c, NO_THREADS);
827	>	assertFalse(sync.hasWaiters(c));
828	>	assertTrue(acquired.releaseShared(0));
829		c.await();
830	<	sync.release(1);
830	>	sync.release();
831		}});
832
833	<	t.start();
834	<	Thread.sleep(SHORT_DELAY_MS);
835	<	sync.acquire(1);
833	>	acquired.acquireShared(0);
834	>	sync.acquire();
835	>	assertHasWaitersLocked(sync, c, t);
836	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
837		assertTrue(sync.hasWaiters(c));
652	–	assertEquals(1, sync.getWaitQueueLength(c));
838		c.signal();
839	<	sync.release(1);
840	<	Thread.sleep(SHORT_DELAY_MS);
656	<	sync.acquire(1);
839	>	assertHasWaitersLocked(sync, c, NO_THREADS);
840	>	assertHasExclusiveQueuedThreads(sync, t);
841		assertFalse(sync.hasWaiters(c));
842	<	assertEquals(0, sync.getWaitQueueLength(c));
843	<	sync.release(1);
844	<	t.join(SHORT_DELAY_MS);
845	<	assertFalse(t.isAlive());
842	>	sync.release();
843	>
844	>	awaitTermination(t);
845	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
846		}
847
848		/**
849		* getWaitQueueLength returns number of waiting threads
850		*/
851	<	public void testGetWaitQueueLength() throws InterruptedException {
851	>	public void testGetWaitQueueLength() {
852		final Mutex sync = new Mutex();
853	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
854	<	Thread t1 = new Thread(new CheckedRunnable() {
853	>	final ConditionObject c = sync.newCondition();
854	>	final BooleanLatch acquired1 = new BooleanLatch();
855	>	final BooleanLatch acquired2 = new BooleanLatch();
856	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
857		public void realRun() throws InterruptedException {
858	<	sync.acquire(1);
859	<	threadAssertFalse(sync.hasWaiters(c));
860	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
858	>	sync.acquire();
859	>	assertHasWaitersLocked(sync, c, NO_THREADS);
860	>	assertEquals(0, sync.getWaitQueueLength(c));
861	>	assertTrue(acquired1.releaseShared(0));
862		c.await();
863	<	sync.release(1);
863	>	sync.release();
864		}});
865	+	acquired1.acquireShared(0);
866	+	sync.acquire();
867	+	assertHasWaitersLocked(sync, c, t1);
868	+	assertEquals(1, sync.getWaitQueueLength(c));
869	+	sync.release();
870
871	<	Thread t2 = new Thread(new CheckedRunnable() {
871	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
872		public void realRun() throws InterruptedException {
873	<	sync.acquire(1);
874	<	threadAssertTrue(sync.hasWaiters(c));
875	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
873	>	sync.acquire();
874	>	assertHasWaitersLocked(sync, c, t1);
875	>	assertEquals(1, sync.getWaitQueueLength(c));
876	>	assertTrue(acquired2.releaseShared(0));
877		c.await();
878	<	sync.release(1);
878	>	sync.release();
879		}});
880	<
881	<	t1.start();
882	<	Thread.sleep(SHORT_DELAY_MS);
883	<	t2.start();
691	<	Thread.sleep(SHORT_DELAY_MS);
692	<	sync.acquire(1);
693	<	assertTrue(sync.hasWaiters(c));
880	>	acquired2.acquireShared(0);
881	>	sync.acquire();
882	>	assertHasWaitersLocked(sync, c, t1, t2);
883	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
884		assertEquals(2, sync.getWaitQueueLength(c));
885		c.signalAll();
886	<	sync.release(1);
887	<	Thread.sleep(SHORT_DELAY_MS);
698	<	sync.acquire(1);
699	<	assertFalse(sync.hasWaiters(c));
886	>	assertHasWaitersLocked(sync, c, NO_THREADS);
887	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
888		assertEquals(0, sync.getWaitQueueLength(c));
889	<	sync.release(1);
890	<	t1.join(SHORT_DELAY_MS);
891	<	t2.join(SHORT_DELAY_MS);
892	<	assertFalse(t1.isAlive());
893	<	assertFalse(t2.isAlive());
889	>	sync.release();
890	>
891	>	awaitTermination(t1);
892	>	awaitTermination(t2);
893	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
894		}
895
896		/**
897		* getWaitingThreads returns only and all waiting threads
898		*/
899	<	public void testGetWaitingThreads() throws InterruptedException {
899	>	public void testGetWaitingThreads() {
900		final Mutex sync = new Mutex();
901	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
902	<	Thread t1 = new Thread(new CheckedRunnable() {
901	>	final ConditionObject c = sync.newCondition();
902	>	final BooleanLatch acquired1 = new BooleanLatch();
903	>	final BooleanLatch acquired2 = new BooleanLatch();
904	>	final Thread t1 = new Thread(new CheckedRunnable() {
905		public void realRun() throws InterruptedException {
906	<	sync.acquire(1);
907	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
906	>	sync.acquire();
907	>	assertHasWaitersLocked(sync, c, NO_THREADS);
908	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
909	>	assertTrue(acquired1.releaseShared(0));
910		c.await();
911	<	sync.release(1);
911	>	sync.release();
912		}});
913
914	<	Thread t2 = new Thread(new CheckedRunnable() {
914	>	final Thread t2 = new Thread(new CheckedRunnable() {
915		public void realRun() throws InterruptedException {
916	<	sync.acquire(1);
917	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
916	>	sync.acquire();
917	>	assertHasWaitersLocked(sync, c, t1);
918	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
919	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
920	>	assertEquals(1, sync.getWaitingThreads(c).size());
921	>	assertTrue(acquired2.releaseShared(0));
922		c.await();
923	<	sync.release(1);
923	>	sync.release();
924		}});
925
926	<	sync.acquire(1);
926	>	sync.acquire();
927	>	assertHasWaitersLocked(sync, c, NO_THREADS);
928	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
929	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
930		assertTrue(sync.getWaitingThreads(c).isEmpty());
931	<	sync.release(1);
931	>	assertEquals(0, sync.getWaitingThreads(c).size());
932	>	sync.release();
933	>
934		t1.start();
935	<	Thread.sleep(SHORT_DELAY_MS);
935	>	acquired1.acquireShared(0);
936	>	sync.acquire();
937	>	assertHasWaitersLocked(sync, c, t1);
938	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
939	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
940	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
941	>	assertEquals(1, sync.getWaitingThreads(c).size());
942	>	sync.release();
943	>
944		t2.start();
945	<	Thread.sleep(SHORT_DELAY_MS);
946	<	sync.acquire(1);
947	<	assertTrue(sync.hasWaiters(c));
945	>	acquired2.acquireShared(0);
946	>	sync.acquire();
947	>	assertHasWaitersLocked(sync, c, t1, t2);
948	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
949		assertTrue(sync.getWaitingThreads(c).contains(t1));
950		assertTrue(sync.getWaitingThreads(c).contains(t2));
951	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
952	+	assertEquals(2, sync.getWaitingThreads(c).size());
953		c.signalAll();
954	<	sync.release(1);
955	<	Thread.sleep(SHORT_DELAY_MS);
956	<	sync.acquire(1);
957	<	assertFalse(sync.hasWaiters(c));
954	>	assertHasWaitersLocked(sync, c, NO_THREADS);
955	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
956	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
957	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
958		assertTrue(sync.getWaitingThreads(c).isEmpty());
959	<	sync.release(1);
960	<	t1.join(SHORT_DELAY_MS);
749	<	t2.join(SHORT_DELAY_MS);
750	<	assertFalse(t1.isAlive());
751	<	assertFalse(t2.isAlive());
752	<	}
753	<
959	>	assertEquals(0, sync.getWaitingThreads(c).size());
960	>	sync.release();
961
962	<
963	<	/**
964	<	* awaitUninterruptibly doesn't abort on interrupt
758	<	*/
759	<	public void testAwaitUninterruptibly() throws InterruptedException {
760	<	final Mutex sync = new Mutex();
761	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
762	<	Thread t = new Thread(new CheckedRunnable() {
763	<	public void realRun() {
764	<	sync.acquire(1);
765	<	c.awaitUninterruptibly();
766	<	sync.release(1);
767	<	}});
768	<
769	<	t.start();
770	<	Thread.sleep(SHORT_DELAY_MS);
771	<	t.interrupt();
772	<	sync.acquire(1);
773	<	c.signal();
774	<	sync.release(1);
775	<	t.join(SHORT_DELAY_MS);
776	<	assertFalse(t.isAlive());
777	<	}
778	<
779	<	/**
780	<	* await is interruptible
781	<	*/
782	<	public void testAwait_Interrupt() throws InterruptedException {
783	<	final Mutex sync = new Mutex();
784	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
785	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
786	<	public void realRun() throws InterruptedException {
787	<	sync.acquire(1);
788	<	c.await();
789	<	sync.release(1);
790	<	}});
791	<
792	<	t.start();
793	<	Thread.sleep(SHORT_DELAY_MS);
794	<	t.interrupt();
795	<	t.join(SHORT_DELAY_MS);
796	<	assertFalse(t.isAlive());
962	>	awaitTermination(t1);
963	>	awaitTermination(t2);
964	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
965		}
966
967		/**
968	<	* awaitNanos is interruptible
968	>	* awaitUninterruptibly is uninterruptible
969		*/
970	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
970	>	public void testAwaitUninterruptibly() {
971		final Mutex sync = new Mutex();
972	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
973	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
974	<	public void realRun() throws InterruptedException {
975	<	sync.acquire(1);
976	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
977	<	sync.release(1);
972	>	final ConditionObject condition = sync.newCondition();
973	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
974	>	Thread t = newStartedThread(new CheckedRunnable() {
975	>	public void realRun() {
976	>	sync.acquire();
977	>	assertTrue(pleaseInterrupt.releaseShared(0));
978	>	condition.awaitUninterruptibly();
979	>	assertTrue(Thread.interrupted());
980	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
981	>	sync.release();
982		}});
983
984	<	t.start();
985	<	Thread.sleep(SHORT_DELAY_MS);
984	>	pleaseInterrupt.acquireShared(0);
985	>	sync.acquire();
986	>	assertHasWaitersLocked(sync, condition, t);
987	>	sync.release();
988		t.interrupt();
989	<	t.join(SHORT_DELAY_MS);
990	<	assertFalse(t.isAlive());
989	>	assertHasWaitersUnlocked(sync, condition, t);
990	>	assertThreadBlocks(t, Thread.State.WAITING);
991	>	sync.acquire();
992	>	assertHasWaitersLocked(sync, condition, t);
993	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
994	>	condition.signal();
995	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
996	>	assertHasExclusiveQueuedThreads(sync, t);
997	>	sync.release();
998	>	awaitTermination(t);
999		}
1000
1001		/**
1002	<	* awaitUntil is interruptible
1003	<	*/
1004	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
1005	<	final Mutex sync = new Mutex();
1006	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1007	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1002	>	* await/awaitNanos/awaitUntil is interruptible
1003	>	*/
1004	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
1005	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
1006	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
1007	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
1008	>	public void testInterruptible(final AwaitMethod awaitMethod) {
1009	>	final Mutex sync = new Mutex();
1010	>	final ConditionObject c = sync.newCondition();
1011	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1012	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1013		public void realRun() throws InterruptedException {
1014	<	sync.acquire(1);
1015	<	java.util.Date d = new java.util.Date();
1016	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
830	<	sync.release(1);
1014	>	sync.acquire();
1015	>	assertTrue(pleaseInterrupt.releaseShared(0));
1016	>	await(c, awaitMethod);
1017		}});
1018
1019	<	t.start();
834	<	Thread.sleep(SHORT_DELAY_MS);
1019	>	pleaseInterrupt.acquireShared(0);
1020		t.interrupt();
1021	<	t.join(SHORT_DELAY_MS);
837	<	assertFalse(t.isAlive());
1021	>	awaitTermination(t);
1022		}
1023
1024		/**
1025		* signalAll wakes up all threads
1026		*/
1027	<	public void testSignalAll() throws InterruptedException {
1028	<	final Mutex sync = new Mutex();
1029	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1030	<	Thread t1 = new Thread(new CheckedRunnable() {
1027	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1028	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1029	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1030	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1031	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1032	>	final Mutex sync = new Mutex();
1033	>	final ConditionObject c = sync.newCondition();
1034	>	final BooleanLatch acquired1 = new BooleanLatch();
1035	>	final BooleanLatch acquired2 = new BooleanLatch();
1036	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1037		public void realRun() throws InterruptedException {
1038	<	sync.acquire(1);
1039	<	c.await();
1040	<	sync.release(1);
1038	>	sync.acquire();
1039	>	acquired1.releaseShared(0);
1040	>	await(c, awaitMethod);
1041	>	sync.release();
1042		}});
1043
1044	<	Thread t2 = new Thread(new CheckedRunnable() {
1044	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1045		public void realRun() throws InterruptedException {
1046	<	sync.acquire(1);
1047	<	c.await();
1048	<	sync.release(1);
1046	>	sync.acquire();
1047	>	acquired2.releaseShared(0);
1048	>	await(c, awaitMethod);
1049	>	sync.release();
1050		}});
1051
1052	<	t1.start();
1053	<	t2.start();
1054	<	Thread.sleep(SHORT_DELAY_MS);
1055	<	sync.acquire(1);
1052	>	acquired1.acquireShared(0);
1053	>	acquired2.acquireShared(0);
1054	>	sync.acquire();
1055	>	assertHasWaitersLocked(sync, c, t1, t2);
1056	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1057		c.signalAll();
1058	<	sync.release(1);
1059	<	t1.join(SHORT_DELAY_MS);
1060	<	t2.join(SHORT_DELAY_MS);
1061	<	assertFalse(t1.isAlive());
1062	<	assertFalse(t2.isAlive());
1058	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1059	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1060	>	sync.release();
1061	>	awaitTermination(t1);
1062	>	awaitTermination(t2);
1063		}
1064
872	–
1065		/**
1066		* toString indicates current state
1067		*/
1068		public void testToString() {
1069		Mutex sync = new Mutex();
1070	<	String us = sync.toString();
1071	<	assertTrue(us.indexOf("State = 0") >= 0);
1072	<	sync.acquire(1);
881	<	String ls = sync.toString();
882	<	assertTrue(ls.indexOf("State = 1") >= 0);
1070	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1071	>	sync.acquire();
1072	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1073		}
1074
1075		/**
1076	<	* A serialized AQS deserializes with current state
1077	<	*/
1078	<	public void testSerialization() throws Exception {
1079	<	Mutex l = new Mutex();
1080	<	l.acquire(1);
1081	<	assertTrue(l.isHeldExclusively());
1082	<
1083	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1084	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
895	<	out.writeObject(l);
896	<	out.close();
897	<
898	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
899	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
900	<	Mutex r = (Mutex) in.readObject();
901	<	assertTrue(r.isHeldExclusively());
902	<	}
1076	>	* A serialized AQS deserializes with current state, but no queued threads
1077	>	*/
1078	>	public void testSerialization() {
1079	>	Mutex sync = new Mutex();
1080	>	assertFalse(serialClone(sync).isHeldExclusively());
1081	>	sync.acquire();
1082	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1083	>	waitForQueuedThread(sync, t);
1084	>	assertTrue(sync.isHeldExclusively());
1085
1086	+	Mutex clone = serialClone(sync);
1087	+	assertTrue(clone.isHeldExclusively());
1088	+	assertHasExclusiveQueuedThreads(sync, t);
1089	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1090	+	t.interrupt();
1091	+	awaitTermination(t);
1092	+	sync.release();
1093	+	assertFalse(sync.isHeldExclusively());
1094	+	assertTrue(clone.isHeldExclusively());
1095	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1096	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1097	+	}
1098
1099		/**
1100		* tryReleaseShared setting state changes getState
#	Line 908 | Line 1102 | public class AbstractQueuedSynchronizerT
1102		public void testGetStateWithReleaseShared() {
1103		final BooleanLatch l = new BooleanLatch();
1104		assertFalse(l.isSignalled());
1105	<	l.releaseShared(0);
1105	>	assertTrue(l.releaseShared(0));
1106		assertTrue(l.isSignalled());
1107		}
1108
#	Line 918 | Line 1112 | public class AbstractQueuedSynchronizerT
1112		public void testReleaseShared() {
1113		final BooleanLatch l = new BooleanLatch();
1114		assertFalse(l.isSignalled());
1115	<	l.releaseShared(0);
1115	>	assertTrue(l.releaseShared(0));
1116		assertTrue(l.isSignalled());
1117	<	l.releaseShared(0);
1117	>	assertTrue(l.releaseShared(0));
1118		assertTrue(l.isSignalled());
1119		}
1120
1121		/**
1122		* acquireSharedInterruptibly returns after release, but not before
1123		*/
1124	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1124	>	public void testAcquireSharedInterruptibly() {
1125		final BooleanLatch l = new BooleanLatch();
1126
1127	<	Thread t = new Thread(new CheckedRunnable() {
1127	>	Thread t = newStartedThread(new CheckedRunnable() {
1128		public void realRun() throws InterruptedException {
1129	<	threadAssertFalse(l.isSignalled());
1129	>	assertFalse(l.isSignalled());
1130		l.acquireSharedInterruptibly(0);
1131	<	threadAssertTrue(l.isSignalled());
1131	>	assertTrue(l.isSignalled());
1132	>	l.acquireSharedInterruptibly(0);
1133	>	assertTrue(l.isSignalled());
1134		}});
1135
1136	<	t.start();
1136	>	waitForQueuedThread(l, t);
1137		assertFalse(l.isSignalled());
1138	<	Thread.sleep(SHORT_DELAY_MS);
1139	<	l.releaseShared(0);
1138	>	assertThreadBlocks(t, Thread.State.WAITING);
1139	>	assertHasSharedQueuedThreads(l, t);
1140	>	assertTrue(l.releaseShared(0));
1141		assertTrue(l.isSignalled());
1142	<	t.join();
1142	>	awaitTermination(t);
1143		}
1144
948	–
1145		/**
1146	<	* acquireSharedTimed returns after release
1146	>	* tryAcquireSharedNanos returns after release, but not before
1147		*/
1148	<	public void testAsquireSharedTimed() throws InterruptedException {
1148	>	public void testTryAcquireSharedNanos() {
1149		final BooleanLatch l = new BooleanLatch();
1150
1151	<	Thread t = new Thread(new CheckedRunnable() {
1151	>	Thread t = newStartedThread(new CheckedRunnable() {
1152		public void realRun() throws InterruptedException {
1153	<	threadAssertFalse(l.isSignalled());
1154	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1155	<	threadAssertTrue(l.isSignalled());
1153	>	assertFalse(l.isSignalled());
1154	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1155	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1156	>	assertTrue(l.isSignalled());
1157	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1158	>	assertTrue(l.isSignalled());
1159		}});
1160
1161	<	t.start();
1161	>	waitForQueuedThread(l, t);
1162		assertFalse(l.isSignalled());
1163	<	Thread.sleep(SHORT_DELAY_MS);
1164	<	l.releaseShared(0);
1163	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1164	>	assertTrue(l.releaseShared(0));
1165		assertTrue(l.isSignalled());
1166	<	t.join();
1166	>	awaitTermination(t);
1167		}
1168
1169		/**
1170	<	* acquireSharedInterruptibly throws IE if interrupted before released
1170	>	* acquireSharedInterruptibly is interruptible
1171		*/
1172	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1172	>	public void testAcquireSharedInterruptibly_Interruptible() {
1173		final BooleanLatch l = new BooleanLatch();
1174	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1174	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1175		public void realRun() throws InterruptedException {
1176	<	threadAssertFalse(l.isSignalled());
1176	>	assertFalse(l.isSignalled());
1177		l.acquireSharedInterruptibly(0);
1178		}});
1179
1180	<	t.start();
1180	>	waitForQueuedThread(l, t);
1181		assertFalse(l.isSignalled());
1182		t.interrupt();
1183	<	t.join();
1183	>	awaitTermination(t);
1184	>	assertFalse(l.isSignalled());
1185		}
1186
1187		/**
1188	<	* acquireSharedTimed throws IE if interrupted before released
1188	>	* tryAcquireSharedNanos is interruptible
1189		*/
1190	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1190	>	public void testTryAcquireSharedNanos_Interruptible() {
1191		final BooleanLatch l = new BooleanLatch();
1192	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1192	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1193		public void realRun() throws InterruptedException {
1194	<	threadAssertFalse(l.isSignalled());
1195	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1194	>	assertFalse(l.isSignalled());
1195	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1196	>	l.tryAcquireSharedNanos(0, nanos);
1197		}});
1198
1199	<	t.start();
999	<	Thread.sleep(SHORT_DELAY_MS);
1199	>	waitForQueuedThread(l, t);
1200		assertFalse(l.isSignalled());
1201		t.interrupt();
1202	<	t.join();
1202	>	awaitTermination(t);
1203	>	assertFalse(l.isSignalled());
1204		}
1205
1206		/**
1207	<	* acquireSharedTimed times out if not released before timeout
1207	>	* tryAcquireSharedNanos times out if not released before timeout
1208		*/
1209	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1209	>	public void testTryAcquireSharedNanos_Timeout() {
1210		final BooleanLatch l = new BooleanLatch();
1211	<	Thread t = new Thread(new CheckedRunnable() {
1211	>	final BooleanLatch observedQueued = new BooleanLatch();
1212	>	Thread t = newStartedThread(new CheckedRunnable() {
1213		public void realRun() throws InterruptedException {
1214	<	threadAssertFalse(l.isSignalled());
1215	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1214	>	assertFalse(l.isSignalled());
1215	>	for (long millis = timeoutMillis();
1216	>	!observedQueued.isSignalled();
1217	>	millis *= 2) {
1218	>	long nanos = MILLISECONDS.toNanos(millis);
1219	>	long startTime = System.nanoTime();
1220	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1221	>	assertTrue(millisElapsedSince(startTime) >= millis);
1222	>	}
1223	>	assertFalse(l.isSignalled());
1224		}});
1225
1226	<	t.start();
1227	<	Thread.sleep(SHORT_DELAY_MS);
1226	>	waitForQueuedThread(l, t);
1227	>	observedQueued.releaseShared(0);
1228	>	assertFalse(l.isSignalled());
1229	>	awaitTermination(t);
1230		assertFalse(l.isSignalled());
1231	<	t.join();
1231	>	}
1232	>
1233	>	/**
1234	>	* awaitNanos/timed await with 0 wait times out immediately
1235	>	*/
1236	>	public void testAwait_Zero() throws InterruptedException {
1237	>	final Mutex sync = new Mutex();
1238	>	final ConditionObject c = sync.newCondition();
1239	>	sync.acquire();
1240	>	assertTrue(c.awaitNanos(0L) <= 0);
1241	>	assertFalse(c.await(0L, NANOSECONDS));
1242	>	sync.release();
1243	>	}
1244	>
1245	>	/**
1246	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1247	>	*/
1248	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1249	>	final Mutex sync = new Mutex();
1250	>	final ConditionObject c = sync.newCondition();
1251	>	sync.acquire();
1252	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1253	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1254	>	sync.release();
1255		}
1256
1257		}

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