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Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.13 by jsr166, Sat Nov 21 17:54:04 2009 UTC vs.
Revision 1.41 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.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	+	@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom
23		public class AbstractQueuedLongSynchronizerTest 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(AbstractQueuedLongSynchronizerTest.class);
29		}
30
31		/**
32	<	* A simple mutex class, adapted from the
33	<	* 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
32	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
33	>	* acquire tests exercise this as a sample user extension.
34		*/
35		static class Mutex extends AbstractQueuedLongSynchronizer {
36	<	// Use value > 32 bits for locked state
37	<	static final long LOCKED = 1 << 48;
36	>	/** An eccentric value > 32 bits for locked synchronizer state. */
37	>	static final long LOCKED = (1L << 63) | (1L << 15);
38	>
39	>	static final long UNLOCKED = 0;
40	>
41		public boolean isHeldExclusively() {
42	<	return getState() == LOCKED;
42	>	long state = getState();
43	>	assertTrue(state == UNLOCKED || state == LOCKED);
44	>	return state == LOCKED;
45		}
46
47		public boolean tryAcquire(long acquires) {
48	<	return compareAndSetState(0, LOCKED);
48	>	assertEquals(LOCKED, acquires);
49	>	return compareAndSetState(UNLOCKED, LOCKED);
50		}
51
52		public boolean tryRelease(long releases) {
53	<	if (getState() == 0) throw new IllegalMonitorStateException();
54	<	setState(0);
53	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
54	>	setState(UNLOCKED);
55		return true;
56		}
57
58	<	public AbstractQueuedLongSynchronizer.ConditionObject newCondition() { return new AbstractQueuedLongSynchronizer.ConditionObject(); }
58	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
59	>	return tryAcquireNanos(LOCKED, nanos);
60	>	}
61
62	<	}
62	>	public boolean tryAcquire() {
63	>	return tryAcquire(LOCKED);
64	>	}
65	>
66	>	public boolean tryRelease() {
67	>	return tryRelease(LOCKED);
68	>	}
69	>
70	>	public void acquire() {
71	>	acquire(LOCKED);
72	>	}
73	>
74	>	public void acquireInterruptibly() throws InterruptedException {
75	>	acquireInterruptibly(LOCKED);
76	>	}
77
78	+	public void release() {
79	+	release(LOCKED);
80	+	}
81	+
82	+	public ConditionObject newCondition() {
83	+	return new ConditionObject();
84	+	}
85	+	}
86
87		/**
88		* A simple latch class, to test shared mode.
#	Line 59 | Line 91 | public class AbstractQueuedLongSynchroni
91		public boolean isSignalled() { return getState() != 0; }
92
93		public long tryAcquireShared(long ignore) {
94	<	return isSignalled()? 1 : -1;
94	>	return isSignalled() ? 1 : -1;
95		}
96
97		public boolean tryReleaseShared(long ignore) {
98	<	setState(1 << 62);
98	>	setState(1L << 62);
99		return true;
100		}
101		}
#	Line 74 | Line 106 | public class AbstractQueuedLongSynchroni
106		*/
107		class InterruptibleSyncRunnable extends CheckedRunnable {
108		final Mutex sync;
109	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
109	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
110		public void realRun() throws InterruptedException {
111	<	sync.acquireInterruptibly(1);
111	>	sync.acquireInterruptibly();
112		}
113		}
114
83	–
115		/**
116		* A runnable calling acquireInterruptibly that expects to be
117		* interrupted.
118		*/
119		class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
120		final Mutex sync;
121	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
121	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
122		public void realRun() throws InterruptedException {
123	<	sync.acquireInterruptibly(1);
123	>	sync.acquireInterruptibly();
124	>	}
125	>	}
126	>
127	>	/** A constant to clarify calls to checking methods below. */
128	>	static final Thread[] NO_THREADS = new Thread[0];
129	>
130	>	/**
131	>	* Spin-waits until sync.isQueued(t) becomes true.
132	>	*/
133	>	void waitForQueuedThread(AbstractQueuedLongSynchronizer sync,
134	>	Thread t) {
135	>	long startTime = System.nanoTime();
136	>	while (!sync.isQueued(t)) {
137	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
138	>	throw new AssertionFailedError("timed out");
139	>	Thread.yield();
140	>	}
141	>	assertTrue(t.isAlive());
142	>	}
143	>
144	>	/**
145	>	* Checks that sync has exactly the given queued threads.
146	>	*/
147	>	void assertHasQueuedThreads(AbstractQueuedLongSynchronizer sync,
148	>	Thread... expected) {
149	>	Collection<Thread> actual = sync.getQueuedThreads();
150	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
151	>	assertEquals(expected.length, sync.getQueueLength());
152	>	assertEquals(expected.length, actual.size());
153	>	assertEquals(expected.length == 0, actual.isEmpty());
154	>	assertEquals(new HashSet<Thread>(actual),
155	>	new HashSet<Thread>(Arrays.asList(expected)));
156	>	}
157	>
158	>	/**
159	>	* Checks that sync has exactly the given (exclusive) queued threads.
160	>	*/
161	>	void assertHasExclusiveQueuedThreads(AbstractQueuedLongSynchronizer sync,
162	>	Thread... expected) {
163	>	assertHasQueuedThreads(sync, expected);
164	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
165	>	new HashSet<Thread>(sync.getQueuedThreads()));
166	>	assertEquals(0, sync.getSharedQueuedThreads().size());
167	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
168	>	}
169	>
170	>	/**
171	>	* Checks that sync has exactly the given (shared) queued threads.
172	>	*/
173	>	void assertHasSharedQueuedThreads(AbstractQueuedLongSynchronizer sync,
174	>	Thread... expected) {
175	>	assertHasQueuedThreads(sync, expected);
176	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
177	>	new HashSet<Thread>(sync.getQueuedThreads()));
178	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
179	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
180	>	}
181	>
182	>	/**
183	>	* Checks that condition c has exactly the given waiter threads,
184	>	* after acquiring mutex.
185	>	*/
186	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
187	>	Thread... threads) {
188	>	sync.acquire();
189	>	assertHasWaitersLocked(sync, c, threads);
190	>	sync.release();
191	>	}
192	>
193	>	/**
194	>	* Checks that condition c has exactly the given waiter threads.
195	>	*/
196	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
197	>	Thread... threads) {
198	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
199	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
200	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
201	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
202	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
203	>	new HashSet<Thread>(Arrays.asList(threads)));
204	>	}
205	>
206	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
207	>
208	>	/**
209	>	* Awaits condition using the specified AwaitMethod.
210	>	*/
211	>	void await(ConditionObject c, AwaitMethod awaitMethod)
212	>	throws InterruptedException {
213	>	long timeoutMillis = 2 * LONG_DELAY_MS;
214	>	switch (awaitMethod) {
215	>	case await:
216	>	c.await();
217	>	break;
218	>	case awaitTimed:
219	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
220	>	break;
221	>	case awaitNanos:
222	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
223	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
224	>	assertTrue(nanosRemaining > 0);
225	>	break;
226	>	case awaitUntil:
227	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
228	>	break;
229	>	default:
230	>	throw new AssertionError();
231		}
232		}
233
234		/**
235	+	* Checks that awaiting the given condition times out (using the
236	+	* default timeout duration).
237	+	*/
238	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
239	+	final long timeoutMillis = timeoutMillis();
240	+	final long startTime;
241	+	try {
242	+	switch (awaitMethod) {
243	+	case awaitTimed:
244	+	startTime = System.nanoTime();
245	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
246	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
247	+	break;
248	+	case awaitNanos:
249	+	startTime = System.nanoTime();
250	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
251	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
252	+	assertTrue(nanosRemaining <= 0);
253	+	assertTrue(nanosRemaining > -MILLISECONDS.toNanos(LONG_DELAY_MS));
254	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
255	+	break;
256	+	case awaitUntil:
257	+	// We shouldn't assume that nanoTime and currentTimeMillis
258	+	// use the same time source, so don't use nanoTime here.
259	+	java.util.Date delayedDate = delayedDate(timeoutMillis);
260	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
261	+	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
262	+	break;
263	+	default:
264	+	throw new UnsupportedOperationException();
265	+	}
266	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
267	+	}
268	+
269	+	/**
270		* isHeldExclusively is false upon construction
271		*/
272		public void testIsHeldExclusively() {
273	<	Mutex rl = new Mutex();
274	<	assertFalse(rl.isHeldExclusively());
273	>	Mutex sync = new Mutex();
274	>	assertFalse(sync.isHeldExclusively());
275		}
276
277		/**
278		* acquiring released sync succeeds
279		*/
280		public void testAcquire() {
281	<	Mutex rl = new Mutex();
282	<	rl.acquire(1);
283	<	assertTrue(rl.isHeldExclusively());
284	<	rl.release(1);
285	<	assertFalse(rl.isHeldExclusively());
281	>	Mutex sync = new Mutex();
282	>	sync.acquire();
283	>	assertTrue(sync.isHeldExclusively());
284	>	sync.release();
285	>	assertFalse(sync.isHeldExclusively());
286		}
287
288		/**
289	<	* tryAcquire on an released sync succeeds
289	>	* tryAcquire on a released sync succeeds
290		*/
291		public void testTryAcquire() {
292	<	Mutex rl = new Mutex();
293	<	assertTrue(rl.tryAcquire(1));
294	<	assertTrue(rl.isHeldExclusively());
295	<	rl.release(1);
292	>	Mutex sync = new Mutex();
293	>	assertTrue(sync.tryAcquire());
294	>	assertTrue(sync.isHeldExclusively());
295	>	sync.release();
296	>	assertFalse(sync.isHeldExclusively());
297		}
298
299		/**
300		* hasQueuedThreads reports whether there are waiting threads
301		*/
302	<	public void testhasQueuedThreads() throws InterruptedException {
302	>	public void testHasQueuedThreads() {
303		final Mutex sync = new Mutex();
130	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
304		assertFalse(sync.hasQueuedThreads());
305	<	sync.acquire(1);
306	<	t1.start();
307	<	Thread.sleep(SHORT_DELAY_MS);
305	>	sync.acquire();
306	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
307	>	waitForQueuedThread(sync, t1);
308		assertTrue(sync.hasQueuedThreads());
309	<	t2.start();
310	<	Thread.sleep(SHORT_DELAY_MS);
309	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
310	>	waitForQueuedThread(sync, t2);
311		assertTrue(sync.hasQueuedThreads());
312		t1.interrupt();
313	<	Thread.sleep(SHORT_DELAY_MS);
313	>	awaitTermination(t1);
314		assertTrue(sync.hasQueuedThreads());
315	<	sync.release(1);
316	<	Thread.sleep(SHORT_DELAY_MS);
315	>	sync.release();
316	>	awaitTermination(t2);
317		assertFalse(sync.hasQueuedThreads());
146	–	t1.join();
147	–	t2.join();
318		}
319
320		/**
321	<	* isQueued(null) throws NPE
321	>	* isQueued(null) throws NullPointerException
322		*/
323		public void testIsQueuedNPE() {
324		final Mutex sync = new Mutex();
#	Line 159 | Line 329 | public class AbstractQueuedLongSynchroni
329		}
330
331		/**
332	<	* isQueued reports whether a thread is queued.
332	>	* isQueued reports whether a thread is queued
333		*/
334	<	public void testIsQueued() throws InterruptedException {
334	>	public void testIsQueued() {
335		final Mutex sync = new Mutex();
336		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
337		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
338		assertFalse(sync.isQueued(t1));
339		assertFalse(sync.isQueued(t2));
340	<	sync.acquire(1);
340	>	sync.acquire();
341		t1.start();
342	<	Thread.sleep(SHORT_DELAY_MS);
342	>	waitForQueuedThread(sync, t1);
343		assertTrue(sync.isQueued(t1));
344	+	assertFalse(sync.isQueued(t2));
345		t2.start();
346	<	Thread.sleep(SHORT_DELAY_MS);
346	>	waitForQueuedThread(sync, t2);
347		assertTrue(sync.isQueued(t1));
348		assertTrue(sync.isQueued(t2));
349		t1.interrupt();
350	<	Thread.sleep(SHORT_DELAY_MS);
350	>	awaitTermination(t1);
351		assertFalse(sync.isQueued(t1));
352		assertTrue(sync.isQueued(t2));
353	<	sync.release(1);
354	<	Thread.sleep(SHORT_DELAY_MS);
353	>	sync.release();
354	>	awaitTermination(t2);
355		assertFalse(sync.isQueued(t1));
185	–	Thread.sleep(SHORT_DELAY_MS);
356		assertFalse(sync.isQueued(t2));
187	–	t1.join();
188	–	t2.join();
357		}
358
359		/**
360		* getFirstQueuedThread returns first waiting thread or null if none
361		*/
362	<	public void testGetFirstQueuedThread() throws InterruptedException {
362	>	public void testGetFirstQueuedThread() {
363		final Mutex sync = new Mutex();
196	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
364		assertNull(sync.getFirstQueuedThread());
365	<	sync.acquire(1);
366	<	t1.start();
367	<	Thread.sleep(SHORT_DELAY_MS);
365	>	sync.acquire();
366	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
367	>	waitForQueuedThread(sync, t1);
368		assertEquals(t1, sync.getFirstQueuedThread());
369	<	t2.start();
370	<	Thread.sleep(SHORT_DELAY_MS);
369	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
370	>	waitForQueuedThread(sync, t2);
371		assertEquals(t1, sync.getFirstQueuedThread());
372		t1.interrupt();
373	<	Thread.sleep(SHORT_DELAY_MS);
208	<	Thread.sleep(SHORT_DELAY_MS);
373	>	awaitTermination(t1);
374		assertEquals(t2, sync.getFirstQueuedThread());
375	<	sync.release(1);
376	<	Thread.sleep(SHORT_DELAY_MS);
375	>	sync.release();
376	>	awaitTermination(t2);
377		assertNull(sync.getFirstQueuedThread());
213	–	t1.join();
214	–	t2.join();
378		}
379
217	–
380		/**
381		* hasContended reports false if no thread has ever blocked, else true
382		*/
383	<	public void testHasContended() throws InterruptedException {
383	>	public void testHasContended() {
384		final Mutex sync = new Mutex();
223	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
385		assertFalse(sync.hasContended());
386	<	sync.acquire(1);
387	<	t1.start();
388	<	Thread.sleep(SHORT_DELAY_MS);
386	>	sync.acquire();
387	>	assertFalse(sync.hasContended());
388	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
389	>	waitForQueuedThread(sync, t1);
390		assertTrue(sync.hasContended());
391	<	t2.start();
392	<	Thread.sleep(SHORT_DELAY_MS);
391	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
392	>	waitForQueuedThread(sync, t2);
393		assertTrue(sync.hasContended());
394		t1.interrupt();
395	<	Thread.sleep(SHORT_DELAY_MS);
395	>	awaitTermination(t1);
396		assertTrue(sync.hasContended());
397	<	sync.release(1);
398	<	Thread.sleep(SHORT_DELAY_MS);
397	>	sync.release();
398	>	awaitTermination(t2);
399		assertTrue(sync.hasContended());
239	–	t1.join();
240	–	t2.join();
400		}
401
402		/**
403	<	* getQueuedThreads includes waiting threads
403	>	* getQueuedThreads returns all waiting threads
404		*/
405	<	public void testGetQueuedThreads() throws InterruptedException {
405	>	public void testGetQueuedThreads() {
406		final Mutex sync = new Mutex();
407		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
408		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
409	<	assertTrue(sync.getQueuedThreads().isEmpty());
410	<	sync.acquire(1);
411	<	assertTrue(sync.getQueuedThreads().isEmpty());
409	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
410	>	sync.acquire();
411	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
412		t1.start();
413	<	Thread.sleep(SHORT_DELAY_MS);
413	>	waitForQueuedThread(sync, t1);
414	>	assertHasExclusiveQueuedThreads(sync, t1);
415		assertTrue(sync.getQueuedThreads().contains(t1));
416	+	assertFalse(sync.getQueuedThreads().contains(t2));
417		t2.start();
418	<	Thread.sleep(SHORT_DELAY_MS);
418	>	waitForQueuedThread(sync, t2);
419	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
420		assertTrue(sync.getQueuedThreads().contains(t1));
421		assertTrue(sync.getQueuedThreads().contains(t2));
422		t1.interrupt();
423	<	Thread.sleep(SHORT_DELAY_MS);
424	<	assertFalse(sync.getQueuedThreads().contains(t1));
425	<	assertTrue(sync.getQueuedThreads().contains(t2));
426	<	sync.release(1);
427	<	Thread.sleep(SHORT_DELAY_MS);
266	<	assertTrue(sync.getQueuedThreads().isEmpty());
267	<	t1.join();
268	<	t2.join();
423	>	awaitTermination(t1);
424	>	assertHasExclusiveQueuedThreads(sync, t2);
425	>	sync.release();
426	>	awaitTermination(t2);
427	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
428		}
429
430		/**
431	<	* getExclusiveQueuedThreads includes waiting threads
431	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
432		*/
433	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
433	>	public void testGetExclusiveQueuedThreads() {
434		final Mutex sync = new Mutex();
435		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
436		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
437	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
438	<	sync.acquire(1);
439	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
437	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
438	>	sync.acquire();
439	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
440		t1.start();
441	<	Thread.sleep(SHORT_DELAY_MS);
441	>	waitForQueuedThread(sync, t1);
442	>	assertHasExclusiveQueuedThreads(sync, t1);
443		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
444	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
445		t2.start();
446	<	Thread.sleep(SHORT_DELAY_MS);
446	>	waitForQueuedThread(sync, t2);
447	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
448		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
449		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
450		t1.interrupt();
451	<	Thread.sleep(SHORT_DELAY_MS);
452	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
453	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
454	<	sync.release(1);
455	<	Thread.sleep(SHORT_DELAY_MS);
294	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	<	t1.join();
296	<	t2.join();
451	>	awaitTermination(t1);
452	>	assertHasExclusiveQueuedThreads(sync, t2);
453	>	sync.release();
454	>	awaitTermination(t2);
455	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
456		}
457
458		/**
459		* getSharedQueuedThreads does not include exclusively waiting threads
460		*/
461	<	public void testGetSharedQueuedThreads() throws InterruptedException {
461	>	public void testGetSharedQueuedThreads_Exclusive() {
462		final Mutex sync = new Mutex();
304	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
463		assertTrue(sync.getSharedQueuedThreads().isEmpty());
464	<	sync.acquire(1);
464	>	sync.acquire();
465		assertTrue(sync.getSharedQueuedThreads().isEmpty());
466	<	t1.start();
467	<	Thread.sleep(SHORT_DELAY_MS);
466	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
467	>	waitForQueuedThread(sync, t1);
468		assertTrue(sync.getSharedQueuedThreads().isEmpty());
469	<	t2.start();
470	<	Thread.sleep(SHORT_DELAY_MS);
469	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
470	>	waitForQueuedThread(sync, t2);
471		assertTrue(sync.getSharedQueuedThreads().isEmpty());
472		t1.interrupt();
473	<	Thread.sleep(SHORT_DELAY_MS);
473	>	awaitTermination(t1);
474		assertTrue(sync.getSharedQueuedThreads().isEmpty());
475	<	sync.release(1);
476	<	Thread.sleep(SHORT_DELAY_MS);
475	>	sync.release();
476	>	awaitTermination(t2);
477		assertTrue(sync.getSharedQueuedThreads().isEmpty());
321	–	t1.join();
322	–	t2.join();
478		}
479
480		/**
481	<	* tryAcquireNanos is interruptible.
481	>	* getSharedQueuedThreads returns all shared waiting threads
482	>	*/
483	>	public void testGetSharedQueuedThreads_Shared() {
484	>	final BooleanLatch l = new BooleanLatch();
485	>	assertHasSharedQueuedThreads(l, NO_THREADS);
486	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
487	>	public void realRun() throws InterruptedException {
488	>	l.acquireSharedInterruptibly(0);
489	>	}});
490	>	waitForQueuedThread(l, t1);
491	>	assertHasSharedQueuedThreads(l, t1);
492	>	Thread t2 = newStartedThread(new CheckedRunnable() {
493	>	public void realRun() throws InterruptedException {
494	>	l.acquireSharedInterruptibly(0);
495	>	}});
496	>	waitForQueuedThread(l, t2);
497	>	assertHasSharedQueuedThreads(l, t1, t2);
498	>	t1.interrupt();
499	>	awaitTermination(t1);
500	>	assertHasSharedQueuedThreads(l, t2);
501	>	assertTrue(l.releaseShared(0));
502	>	awaitTermination(t2);
503	>	assertHasSharedQueuedThreads(l, NO_THREADS);
504	>	}
505	>
506	>	/**
507	>	* tryAcquireNanos is interruptible
508		*/
509	<	public void testInterruptedException2() throws InterruptedException {
509	>	public void testTryAcquireNanos_Interruptible() {
510		final Mutex sync = new Mutex();
511	<	sync.acquire(1);
512	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
511	>	sync.acquire();
512	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
513		public void realRun() throws InterruptedException {
514	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
514	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
515		}});
516
517	<	t.start();
517	>	waitForQueuedThread(sync, t);
518		t.interrupt();
519	<	t.join();
519	>	awaitTermination(t);
520		}
521
341	–
522		/**
523	<	* TryAcquire on exclusively held sync fails
523	>	* tryAcquire on exclusively held sync fails
524		*/
525	<	public void testTryAcquireWhenSynced() throws InterruptedException {
525	>	public void testTryAcquireWhenSynced() {
526		final Mutex sync = new Mutex();
527	<	sync.acquire(1);
528	<	Thread t = new Thread(new CheckedRunnable() {
527	>	sync.acquire();
528	>	Thread t = newStartedThread(new CheckedRunnable() {
529		public void realRun() {
530	<	threadAssertFalse(sync.tryAcquire(1));
530	>	assertFalse(sync.tryAcquire());
531		}});
532
533	<	t.start();
534	<	t.join();
355	<	sync.release(1);
533	>	awaitTermination(t);
534	>	sync.release();
535		}
536
537		/**
538		* tryAcquireNanos on an exclusively held sync times out
539		*/
540	<	public void testAcquireNanos_Timeout() throws InterruptedException {
540	>	public void testAcquireNanos_Timeout() {
541		final Mutex sync = new Mutex();
542	<	sync.acquire(1);
543	<	Thread t = new Thread(new CheckedRunnable() {
542	>	sync.acquire();
543	>	Thread t = newStartedThread(new CheckedRunnable() {
544		public void realRun() throws InterruptedException {
545	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
545	>	long startTime = System.nanoTime();
546	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
547	>	assertFalse(sync.tryAcquireNanos(nanos));
548	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
549		}});
550
551	<	t.start();
552	<	t.join();
371	<	sync.release(1);
551	>	awaitTermination(t);
552	>	sync.release();
553		}
554
374	–
555		/**
556		* getState is true when acquired and false when not
557		*/
558	<	public void testGetState() throws InterruptedException {
558	>	public void testGetState() {
559		final Mutex sync = new Mutex();
560	<	sync.acquire(1);
560	>	sync.acquire();
561		assertTrue(sync.isHeldExclusively());
562	<	sync.release(1);
562	>	sync.release();
563		assertFalse(sync.isHeldExclusively());
564	<	Thread t = new Thread(new CheckedRunnable() {
564	>
565	>	final BooleanLatch acquired = new BooleanLatch();
566	>	final BooleanLatch done = new BooleanLatch();
567	>	Thread t = newStartedThread(new CheckedRunnable() {
568		public void realRun() throws InterruptedException {
569	<	sync.acquire(1);
570	<	Thread.sleep(SMALL_DELAY_MS);
571	<	sync.release(1);
569	>	sync.acquire();
570	>	assertTrue(acquired.releaseShared(0));
571	>	done.acquireShared(0);
572	>	sync.release();
573		}});
574
575	<	t.start();
392	<	Thread.sleep(SHORT_DELAY_MS);
575	>	acquired.acquireShared(0);
576		assertTrue(sync.isHeldExclusively());
577	<	t.join();
577	>	assertTrue(done.releaseShared(0));
578	>	awaitTermination(t);
579		assertFalse(sync.isHeldExclusively());
580		}
581
398	–
399	–	/**
400	–	* acquireInterruptibly is interruptible.
401	–	*/
402	–	public void testAcquireInterruptibly1() throws InterruptedException {
403	–	final Mutex sync = new Mutex();
404	–	sync.acquire(1);
405	–	Thread t = new Thread(new InterruptedSyncRunnable(sync));
406	–	t.start();
407	–	Thread.sleep(SHORT_DELAY_MS);
408	–	t.interrupt();
409	–	Thread.sleep(SHORT_DELAY_MS);
410	–	sync.release(1);
411	–	t.join();
412	–	}
413	–
582		/**
583		* acquireInterruptibly succeeds when released, else is interruptible
584		*/
585	<	public void testAcquireInterruptibly2() throws InterruptedException {
585	>	public void testAcquireInterruptibly() throws InterruptedException {
586		final Mutex sync = new Mutex();
587	<	sync.acquireInterruptibly(1);
588	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
589	<	t.start();
587	>	final BooleanLatch threadStarted = new BooleanLatch();
588	>	sync.acquireInterruptibly();
589	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
590	>	public void realRun() throws InterruptedException {
591	>	assertTrue(threadStarted.releaseShared(0));
592	>	sync.acquireInterruptibly();
593	>	}});
594	>
595	>	threadStarted.acquireShared(0);
596	>	waitForQueuedThread(sync, t);
597		t.interrupt();
598	+	awaitTermination(t);
599		assertTrue(sync.isHeldExclusively());
424	–	t.join();
600		}
601
602		/**
#	Line 429 | Line 604 | public class AbstractQueuedLongSynchroni
604		*/
605		public void testOwns() {
606		final Mutex sync = new Mutex();
607	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
607	>	final ConditionObject c = sync.newCondition();
608		final Mutex sync2 = new Mutex();
609		assertTrue(sync.owns(c));
610		assertFalse(sync2.owns(c));
#	Line 438 | Line 613 | public class AbstractQueuedLongSynchroni
613		/**
614		* Calling await without holding sync throws IllegalMonitorStateException
615		*/
616	<	public void testAwait_IllegalMonitor() throws InterruptedException {
616	>	public void testAwait_IMSE() {
617		final Mutex sync = new Mutex();
618	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
619	<	try {
620	<	c.await();
621	<	shouldThrow();
622	<	} catch (IllegalMonitorStateException success) {}
618	>	final ConditionObject c = sync.newCondition();
619	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
620	>	long startTime = System.nanoTime();
621	>	try {
622	>	await(c, awaitMethod);
623	>	shouldThrow();
624	>	} catch (IllegalMonitorStateException success) {
625	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
626	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
627	>	}
628		}
629
630		/**
631		* Calling signal without holding sync throws IllegalMonitorStateException
632		*/
633	<	public void testSignal_IllegalMonitor() throws InterruptedException {
633	>	public void testSignal_IMSE() {
634		final Mutex sync = new Mutex();
635	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
635	>	final ConditionObject c = sync.newCondition();
636		try {
637		c.signal();
638		shouldThrow();
639		} catch (IllegalMonitorStateException success) {}
640	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
641		}
642
643		/**
644	<	* awaitNanos without a signal times out
644	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
645		*/
646	<	public void testAwaitNanos_Timeout() throws InterruptedException {
646	>	public void testSignalAll_IMSE() {
647		final Mutex sync = new Mutex();
648	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
649	<	sync.acquire(1);
650	<	long t = c.awaitNanos(100);
651	<	assertTrue(t <= 0);
652	<	sync.release(1);
472	<	}
473	<
474	<	/**
475	<	*  Timed await without a signal times out
476	<	*/
477	<	public void testAwait_Timeout() throws InterruptedException {
478	<	final Mutex sync = new Mutex();
479	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
480	<	sync.acquire(1);
481	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
482	<	sync.release(1);
648	>	final ConditionObject c = sync.newCondition();
649	>	try {
650	>	c.signalAll();
651	>	shouldThrow();
652	>	} catch (IllegalMonitorStateException success) {}
653		}
654
655		/**
656	<	* awaitUntil without a signal times out
656	>	* await/awaitNanos/awaitUntil without a signal times out
657		*/
658	<	public void testAwaitUntil_Timeout() throws InterruptedException {
658	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
659	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
660	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
661	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
662		final Mutex sync = new Mutex();
663	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
664	<	sync.acquire(1);
665	<	java.util.Date d = new java.util.Date();
666	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
494	<	sync.release(1);
663	>	final ConditionObject c = sync.newCondition();
664	>	sync.acquire();
665	>	assertAwaitTimesOut(c, awaitMethod);
666	>	sync.release();
667		}
668
669		/**
670	<	* await returns when signalled
670	>	* await/awaitNanos/awaitUntil returns when signalled
671		*/
672	<	public void testAwait() throws InterruptedException {
672	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
673	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
674	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
675	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
676	>	public void testSignal(final AwaitMethod awaitMethod) {
677		final Mutex sync = new Mutex();
678	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
679	<	Thread t = new Thread(new CheckedRunnable() {
678	>	final ConditionObject c = sync.newCondition();
679	>	final BooleanLatch acquired = new BooleanLatch();
680	>	Thread t = newStartedThread(new CheckedRunnable() {
681		public void realRun() throws InterruptedException {
682	<	sync.acquire(1);
683	<	c.await();
684	<	sync.release(1);
682	>	sync.acquire();
683	>	assertTrue(acquired.releaseShared(0));
684	>	await(c, awaitMethod);
685	>	sync.release();
686		}});
687
688	<	t.start();
689	<	Thread.sleep(SHORT_DELAY_MS);
690	<	sync.acquire(1);
688	>	acquired.acquireShared(0);
689	>	sync.acquire();
690	>	assertHasWaitersLocked(sync, c, t);
691	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
692		c.signal();
693	<	sync.release(1);
694	<	t.join(SHORT_DELAY_MS);
695	<	assertFalse(t.isAlive());
693	>	assertHasWaitersLocked(sync, c, NO_THREADS);
694	>	assertHasExclusiveQueuedThreads(sync, t);
695	>	sync.release();
696	>	awaitTermination(t);
697		}
698
519	–
520	–
699		/**
700	<	* hasWaiters throws NPE if null
700	>	* hasWaiters(null) throws NullPointerException
701		*/
702		public void testHasWaitersNPE() {
703		final Mutex sync = new Mutex();
#	Line 530 | Line 708 | public class AbstractQueuedLongSynchroni
708		}
709
710		/**
711	<	* getWaitQueueLength throws NPE if null
711	>	* getWaitQueueLength(null) throws NullPointerException
712		*/
713		public void testGetWaitQueueLengthNPE() {
714		final Mutex sync = new Mutex();
#	Line 540 | Line 718 | public class AbstractQueuedLongSynchroni
718		} catch (NullPointerException success) {}
719		}
720
543	–
721		/**
722		* getWaitingThreads throws NPE if null
723		*/
#	Line 552 | Line 729 | public class AbstractQueuedLongSynchroni
729		} catch (NullPointerException success) {}
730		}
731
555	–
732		/**
733	<	* hasWaiters throws IAE if not owned
733	>	* hasWaiters throws IllegalArgumentException if not owned
734		*/
735		public void testHasWaitersIAE() {
736		final Mutex sync = new Mutex();
737	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
737	>	final ConditionObject c = sync.newCondition();
738		final Mutex sync2 = new Mutex();
739		try {
740		sync2.hasWaiters(c);
741		shouldThrow();
742		} catch (IllegalArgumentException success) {}
743	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
744		}
745
746		/**
747	<	* hasWaiters throws IMSE if not synced
747	>	* hasWaiters throws IllegalMonitorStateException if not synced
748		*/
749		public void testHasWaitersIMSE() {
750		final Mutex sync = new Mutex();
751	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
751	>	final ConditionObject c = sync.newCondition();
752		try {
753		sync.hasWaiters(c);
754		shouldThrow();
755		} catch (IllegalMonitorStateException success) {}
756	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
757		}
758
581	–
759		/**
760	<	* getWaitQueueLength throws IAE if not owned
760	>	* getWaitQueueLength throws IllegalArgumentException if not owned
761		*/
762		public void testGetWaitQueueLengthIAE() {
763		final Mutex sync = new Mutex();
764	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
764	>	final ConditionObject c = sync.newCondition();
765		final Mutex sync2 = new Mutex();
766		try {
767		sync2.getWaitQueueLength(c);
768		shouldThrow();
769		} catch (IllegalArgumentException success) {}
770	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
771		}
772
773		/**
774	<	* getWaitQueueLength throws IMSE if not synced
774	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
775		*/
776		public void testGetWaitQueueLengthIMSE() {
777		final Mutex sync = new Mutex();
778	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
778	>	final ConditionObject c = sync.newCondition();
779		try {
780		sync.getWaitQueueLength(c);
781		shouldThrow();
782		} catch (IllegalMonitorStateException success) {}
783	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
784		}
785
607	–
786		/**
787	<	* getWaitingThreads throws IAE if not owned
787	>	* getWaitingThreads throws IllegalArgumentException if not owned
788		*/
789		public void testGetWaitingThreadsIAE() {
790		final Mutex sync = new Mutex();
791	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
791	>	final ConditionObject c = sync.newCondition();
792		final Mutex sync2 = new Mutex();
793		try {
794		sync2.getWaitingThreads(c);
795		shouldThrow();
796		} catch (IllegalArgumentException success) {}
797	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
798		}
799
800		/**
801	<	* getWaitingThreads throws IMSE if not synced
801	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
802		*/
803		public void testGetWaitingThreadsIMSE() {
804		final Mutex sync = new Mutex();
805	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
805	>	final ConditionObject c = sync.newCondition();
806		try {
807		sync.getWaitingThreads(c);
808		shouldThrow();
809		} catch (IllegalMonitorStateException success) {}
810	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
811		}
812
633	–
634	–
813		/**
814		* hasWaiters returns true when a thread is waiting, else false
815		*/
816	<	public void testHasWaiters() throws InterruptedException {
816	>	public void testHasWaiters() {
817		final Mutex sync = new Mutex();
818	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
819	<	Thread t = new Thread(new CheckedRunnable() {
818	>	final ConditionObject c = sync.newCondition();
819	>	final BooleanLatch acquired = new BooleanLatch();
820	>	Thread t = newStartedThread(new CheckedRunnable() {
821		public void realRun() throws InterruptedException {
822	<	sync.acquire(1);
823	<	threadAssertFalse(sync.hasWaiters(c));
824	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
822	>	sync.acquire();
823	>	assertHasWaitersLocked(sync, c, NO_THREADS);
824	>	assertFalse(sync.hasWaiters(c));
825	>	assertTrue(acquired.releaseShared(0));
826		c.await();
827	<	sync.release(1);
827	>	sync.release();
828		}});
829
830	<	t.start();
831	<	Thread.sleep(SHORT_DELAY_MS);
832	<	sync.acquire(1);
830	>	acquired.acquireShared(0);
831	>	sync.acquire();
832	>	assertHasWaitersLocked(sync, c, t);
833	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
834		assertTrue(sync.hasWaiters(c));
654	–	assertEquals(1, sync.getWaitQueueLength(c));
835		c.signal();
836	<	sync.release(1);
837	<	Thread.sleep(SHORT_DELAY_MS);
658	<	sync.acquire(1);
836	>	assertHasWaitersLocked(sync, c, NO_THREADS);
837	>	assertHasExclusiveQueuedThreads(sync, t);
838		assertFalse(sync.hasWaiters(c));
839	<	assertEquals(0, sync.getWaitQueueLength(c));
840	<	sync.release(1);
841	<	t.join(SHORT_DELAY_MS);
842	<	assertFalse(t.isAlive());
839	>	sync.release();
840	>
841	>	awaitTermination(t);
842	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
843		}
844
845		/**
846		* getWaitQueueLength returns number of waiting threads
847		*/
848	<	public void testGetWaitQueueLength() throws InterruptedException {
848	>	public void testGetWaitQueueLength() {
849		final Mutex sync = new Mutex();
850	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
851	<	Thread t1 = new Thread(new CheckedRunnable() {
850	>	final ConditionObject c = sync.newCondition();
851	>	final BooleanLatch acquired1 = new BooleanLatch();
852	>	final BooleanLatch acquired2 = new BooleanLatch();
853	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
854		public void realRun() throws InterruptedException {
855	<	sync.acquire(1);
856	<	threadAssertFalse(sync.hasWaiters(c));
857	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
855	>	sync.acquire();
856	>	assertHasWaitersLocked(sync, c, NO_THREADS);
857	>	assertEquals(0, sync.getWaitQueueLength(c));
858	>	assertTrue(acquired1.releaseShared(0));
859		c.await();
860	<	sync.release(1);
860	>	sync.release();
861		}});
862	+	acquired1.acquireShared(0);
863	+	sync.acquire();
864	+	assertHasWaitersLocked(sync, c, t1);
865	+	assertEquals(1, sync.getWaitQueueLength(c));
866	+	sync.release();
867
868	<	Thread t2 = new Thread(new CheckedRunnable() {
868	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
869		public void realRun() throws InterruptedException {
870	<	sync.acquire(1);
871	<	threadAssertTrue(sync.hasWaiters(c));
872	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
870	>	sync.acquire();
871	>	assertHasWaitersLocked(sync, c, t1);
872	>	assertEquals(1, sync.getWaitQueueLength(c));
873	>	assertTrue(acquired2.releaseShared(0));
874		c.await();
875	<	sync.release(1);
875	>	sync.release();
876		}});
877	<
878	<	t1.start();
879	<	Thread.sleep(SHORT_DELAY_MS);
880	<	t2.start();
693	<	Thread.sleep(SHORT_DELAY_MS);
694	<	sync.acquire(1);
695	<	assertTrue(sync.hasWaiters(c));
877	>	acquired2.acquireShared(0);
878	>	sync.acquire();
879	>	assertHasWaitersLocked(sync, c, t1, t2);
880	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
881		assertEquals(2, sync.getWaitQueueLength(c));
882		c.signalAll();
883	<	sync.release(1);
884	<	Thread.sleep(SHORT_DELAY_MS);
700	<	sync.acquire(1);
701	<	assertFalse(sync.hasWaiters(c));
883	>	assertHasWaitersLocked(sync, c, NO_THREADS);
884	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
885		assertEquals(0, sync.getWaitQueueLength(c));
886	<	sync.release(1);
887	<	t1.join(SHORT_DELAY_MS);
888	<	t2.join(SHORT_DELAY_MS);
889	<	assertFalse(t1.isAlive());
890	<	assertFalse(t2.isAlive());
886	>	sync.release();
887	>
888	>	awaitTermination(t1);
889	>	awaitTermination(t2);
890	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
891		}
892
893		/**
894		* getWaitingThreads returns only and all waiting threads
895		*/
896	<	public void testGetWaitingThreads() throws InterruptedException {
896	>	public void testGetWaitingThreads() {
897		final Mutex sync = new Mutex();
898	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
899	<	Thread t1 = new Thread(new CheckedRunnable() {
898	>	final ConditionObject c = sync.newCondition();
899	>	final BooleanLatch acquired1 = new BooleanLatch();
900	>	final BooleanLatch acquired2 = new BooleanLatch();
901	>	final Thread t1 = new Thread(new CheckedRunnable() {
902		public void realRun() throws InterruptedException {
903	<	sync.acquire(1);
904	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
903	>	sync.acquire();
904	>	assertHasWaitersLocked(sync, c, NO_THREADS);
905	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
906	>	assertTrue(acquired1.releaseShared(0));
907		c.await();
908	<	sync.release(1);
908	>	sync.release();
909		}});
910
911	<	Thread t2 = new Thread(new CheckedRunnable() {
911	>	final Thread t2 = new Thread(new CheckedRunnable() {
912		public void realRun() throws InterruptedException {
913	<	sync.acquire(1);
914	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
913	>	sync.acquire();
914	>	assertHasWaitersLocked(sync, c, t1);
915	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
916	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
917	>	assertEquals(1, sync.getWaitingThreads(c).size());
918	>	assertTrue(acquired2.releaseShared(0));
919		c.await();
920	<	sync.release(1);
920	>	sync.release();
921		}});
922
923	<	sync.acquire(1);
924	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
925	<	sync.release(1);
926	<	t1.start();
927	<	Thread.sleep(SHORT_DELAY_MS);
928	<	t2.start();
929	<	Thread.sleep(SHORT_DELAY_MS);
739	<	sync.acquire(1);
740	<	assertTrue(sync.hasWaiters(c));
741	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
742	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
743	<	c.signalAll();
744	<	sync.release(1);
745	<	Thread.sleep(SHORT_DELAY_MS);
746	<	sync.acquire(1);
747	<	assertFalse(sync.hasWaiters(c));
748	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
749	<	sync.release(1);
750	<	t1.join(SHORT_DELAY_MS);
751	<	t2.join(SHORT_DELAY_MS);
752	<	assertFalse(t1.isAlive());
753	<	assertFalse(t2.isAlive());
754	<	}
755	<
756	<
923	>	sync.acquire();
924	>	assertHasWaitersLocked(sync, c, NO_THREADS);
925	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
926	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
927	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
928	>	assertEquals(0, sync.getWaitingThreads(c).size());
929	>	sync.release();
930
931	<	/**
932	<	* awaitUninterruptibly doesn't abort on interrupt
933	<	*/
934	<	public void testAwaitUninterruptibly() throws InterruptedException {
935	<	final Mutex sync = new Mutex();
936	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
937	<	Thread t = new Thread(new CheckedRunnable() {
938	<	public void realRun() {
939	<	sync.acquire(1);
767	<	c.awaitUninterruptibly();
768	<	sync.release(1);
769	<	}});
770	<
771	<	t.start();
772	<	Thread.sleep(SHORT_DELAY_MS);
773	<	t.interrupt();
774	<	sync.acquire(1);
775	<	c.signal();
776	<	sync.release(1);
777	<	t.join(SHORT_DELAY_MS);
778	<	assertFalse(t.isAlive());
779	<	}
931	>	t1.start();
932	>	acquired1.acquireShared(0);
933	>	sync.acquire();
934	>	assertHasWaitersLocked(sync, c, t1);
935	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
936	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
937	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
938	>	assertEquals(1, sync.getWaitingThreads(c).size());
939	>	sync.release();
940
941	<	/**
942	<	* await is interruptible
943	<	*/
944	<	public void testAwait_Interrupt() throws InterruptedException {
945	<	final Mutex sync = new Mutex();
946	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
947	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
948	<	public void realRun() throws InterruptedException {
949	<	sync.acquire(1);
950	<	c.await();
951	<	}});
941	>	t2.start();
942	>	acquired2.acquireShared(0);
943	>	sync.acquire();
944	>	assertHasWaitersLocked(sync, c, t1, t2);
945	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
946	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
947	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
948	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
949	>	assertEquals(2, sync.getWaitingThreads(c).size());
950	>	c.signalAll();
951	>	assertHasWaitersLocked(sync, c, NO_THREADS);
952	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
953	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
954	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
955	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
956	>	assertEquals(0, sync.getWaitingThreads(c).size());
957	>	sync.release();
958
959	<	t.start();
960	<	Thread.sleep(SHORT_DELAY_MS);
961	<	t.interrupt();
796	<	t.join(SHORT_DELAY_MS);
797	<	assertFalse(t.isAlive());
959	>	awaitTermination(t1);
960	>	awaitTermination(t2);
961	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
962		}
963
964		/**
965	<	* awaitNanos is interruptible
965	>	* awaitUninterruptibly is uninterruptible
966		*/
967	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
967	>	public void testAwaitUninterruptibly() {
968		final Mutex sync = new Mutex();
969	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
970	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
971	<	public void realRun() throws InterruptedException {
972	<	sync.acquire(1);
973	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
969	>	final ConditionObject condition = sync.newCondition();
970	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
971	>	Thread t = newStartedThread(new CheckedRunnable() {
972	>	public void realRun() {
973	>	sync.acquire();
974	>	assertTrue(pleaseInterrupt.releaseShared(0));
975	>	condition.awaitUninterruptibly();
976	>	assertTrue(Thread.interrupted());
977	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
978	>	sync.release();
979		}});
980
981	<	t.start();
982	<	Thread.sleep(SHORT_DELAY_MS);
981	>	pleaseInterrupt.acquireShared(0);
982	>	sync.acquire();
983	>	assertHasWaitersLocked(sync, condition, t);
984	>	sync.release();
985		t.interrupt();
986	<	t.join(SHORT_DELAY_MS);
987	<	assertFalse(t.isAlive());
986	>	assertHasWaitersUnlocked(sync, condition, t);
987	>	assertThreadBlocks(t, Thread.State.WAITING);
988	>	sync.acquire();
989	>	assertHasWaitersLocked(sync, condition, t);
990	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
991	>	condition.signal();
992	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
993	>	assertHasExclusiveQueuedThreads(sync, t);
994	>	sync.release();
995	>	awaitTermination(t);
996		}
997
998		/**
999	<	* awaitUntil is interruptible
1000	<	*/
1001	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
1002	<	final Mutex sync = new Mutex();
1003	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1004	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
999	>	* await/awaitNanos/awaitUntil is interruptible
1000	>	*/
1001	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
1002	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
1003	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
1004	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
1005	>	public void testInterruptible(final AwaitMethod awaitMethod) {
1006	>	final Mutex sync = new Mutex();
1007	>	final ConditionObject c = sync.newCondition();
1008	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1009	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1010		public void realRun() throws InterruptedException {
1011	<	sync.acquire(1);
1012	<	java.util.Date d = new java.util.Date();
1013	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1011	>	sync.acquire();
1012	>	assertTrue(pleaseInterrupt.releaseShared(0));
1013	>	await(c, awaitMethod);
1014		}});
1015
1016	<	t.start();
833	<	Thread.sleep(SHORT_DELAY_MS);
1016	>	pleaseInterrupt.acquireShared(0);
1017		t.interrupt();
1018	<	t.join(SHORT_DELAY_MS);
836	<	assertFalse(t.isAlive());
1018	>	awaitTermination(t);
1019		}
1020
1021		/**
1022		* signalAll wakes up all threads
1023		*/
1024	<	public void testSignalAll() throws InterruptedException {
1025	<	final Mutex sync = new Mutex();
1026	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1027	<	Thread t1 = new Thread(new CheckedRunnable() {
1024	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1025	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1026	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1027	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1028	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1029	>	final Mutex sync = new Mutex();
1030	>	final ConditionObject c = sync.newCondition();
1031	>	final BooleanLatch acquired1 = new BooleanLatch();
1032	>	final BooleanLatch acquired2 = new BooleanLatch();
1033	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1034		public void realRun() throws InterruptedException {
1035	<	sync.acquire(1);
1036	<	c.await();
1037	<	sync.release(1);
1035	>	sync.acquire();
1036	>	acquired1.releaseShared(0);
1037	>	await(c, awaitMethod);
1038	>	sync.release();
1039		}});
1040
1041	<	Thread t2 = new Thread(new CheckedRunnable() {
1041	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1042		public void realRun() throws InterruptedException {
1043	<	sync.acquire(1);
1044	<	c.await();
1045	<	sync.release(1);
1043	>	sync.acquire();
1044	>	acquired2.releaseShared(0);
1045	>	await(c, awaitMethod);
1046	>	sync.release();
1047		}});
1048
1049	<	t1.start();
1050	<	t2.start();
1051	<	Thread.sleep(SHORT_DELAY_MS);
1052	<	sync.acquire(1);
1049	>	acquired1.acquireShared(0);
1050	>	acquired2.acquireShared(0);
1051	>	sync.acquire();
1052	>	assertHasWaitersLocked(sync, c, t1, t2);
1053	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1054		c.signalAll();
1055	<	sync.release(1);
1056	<	t1.join(SHORT_DELAY_MS);
1057	<	t2.join(SHORT_DELAY_MS);
1058	<	assertFalse(t1.isAlive());
1059	<	assertFalse(t2.isAlive());
1055	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1056	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1057	>	sync.release();
1058	>	awaitTermination(t1);
1059	>	awaitTermination(t2);
1060		}
1061
871	–
1062		/**
1063		* toString indicates current state
1064		*/
1065		public void testToString() {
1066		Mutex sync = new Mutex();
1067	<	String us = sync.toString();
1068	<	assertTrue(us.indexOf("State = 0") >= 0);
1069	<	sync.acquire(1);
880	<	String ls = sync.toString();
881	<	assertTrue(ls.indexOf("State = " + Mutex.LOCKED) >= 0);
1067	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1068	>	sync.acquire();
1069	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1070		}
1071
1072		/**
1073	<	* A serialized AQS deserializes with current state
1074	<	*/
1075	<	public void testSerialization() throws Exception {
1076	<	Mutex l = new Mutex();
1077	<	l.acquire(1);
1078	<	assertTrue(l.isHeldExclusively());
1079	<
1080	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1081	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
894	<	out.writeObject(l);
895	<	out.close();
896	<
897	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
898	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
899	<	Mutex r = (Mutex) in.readObject();
900	<	assertTrue(r.isHeldExclusively());
901	<	}
1073	>	* A serialized AQS deserializes with current state, but no queued threads
1074	>	*/
1075	>	public void testSerialization() {
1076	>	Mutex sync = new Mutex();
1077	>	assertFalse(serialClone(sync).isHeldExclusively());
1078	>	sync.acquire();
1079	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1080	>	waitForQueuedThread(sync, t);
1081	>	assertTrue(sync.isHeldExclusively());
1082
1083	+	Mutex clone = serialClone(sync);
1084	+	assertTrue(clone.isHeldExclusively());
1085	+	assertHasExclusiveQueuedThreads(sync, t);
1086	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1087	+	t.interrupt();
1088	+	awaitTermination(t);
1089	+	sync.release();
1090	+	assertFalse(sync.isHeldExclusively());
1091	+	assertTrue(clone.isHeldExclusively());
1092	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1093	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1094	+	}
1095
1096		/**
1097		* tryReleaseShared setting state changes getState
#	Line 907 | Line 1099 | public class AbstractQueuedLongSynchroni
1099		public void testGetStateWithReleaseShared() {
1100		final BooleanLatch l = new BooleanLatch();
1101		assertFalse(l.isSignalled());
1102	<	l.releaseShared(0);
1102	>	assertTrue(l.releaseShared(0));
1103		assertTrue(l.isSignalled());
1104		}
1105
#	Line 917 | Line 1109 | public class AbstractQueuedLongSynchroni
1109		public void testReleaseShared() {
1110		final BooleanLatch l = new BooleanLatch();
1111		assertFalse(l.isSignalled());
1112	<	l.releaseShared(0);
1112	>	assertTrue(l.releaseShared(0));
1113		assertTrue(l.isSignalled());
1114	<	l.releaseShared(0);
1114	>	assertTrue(l.releaseShared(0));
1115		assertTrue(l.isSignalled());
1116		}
1117
1118		/**
1119		* acquireSharedInterruptibly returns after release, but not before
1120		*/
1121	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1121	>	public void testAcquireSharedInterruptibly() {
1122		final BooleanLatch l = new BooleanLatch();
1123
1124	<	Thread t = new Thread(new CheckedRunnable() {
1124	>	Thread t = newStartedThread(new CheckedRunnable() {
1125		public void realRun() throws InterruptedException {
1126	<	threadAssertFalse(l.isSignalled());
1126	>	assertFalse(l.isSignalled());
1127		l.acquireSharedInterruptibly(0);
1128	<	threadAssertTrue(l.isSignalled());
1128	>	assertTrue(l.isSignalled());
1129	>	l.acquireSharedInterruptibly(0);
1130	>	assertTrue(l.isSignalled());
1131		}});
1132
1133	<	t.start();
1133	>	waitForQueuedThread(l, t);
1134		assertFalse(l.isSignalled());
1135	<	Thread.sleep(SHORT_DELAY_MS);
1136	<	l.releaseShared(0);
1135	>	assertThreadBlocks(t, Thread.State.WAITING);
1136	>	assertHasSharedQueuedThreads(l, t);
1137	>	assertTrue(l.releaseShared(0));
1138		assertTrue(l.isSignalled());
1139	<	t.join();
1139	>	awaitTermination(t);
1140		}
1141
947	–
1142		/**
1143	<	* acquireSharedTimed returns after release
1143	>	* tryAcquireSharedNanos returns after release, but not before
1144		*/
1145	<	public void testAsquireSharedTimed() throws InterruptedException {
1145	>	public void testTryAcquireSharedNanos() {
1146		final BooleanLatch l = new BooleanLatch();
1147
1148	<	Thread t = new Thread(new CheckedRunnable() {
1148	>	Thread t = newStartedThread(new CheckedRunnable() {
1149		public void realRun() throws InterruptedException {
1150	<	threadAssertFalse(l.isSignalled());
1151	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1152	<	threadAssertTrue(l.isSignalled());
1150	>	assertFalse(l.isSignalled());
1151	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1152	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1153	>	assertTrue(l.isSignalled());
1154	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1155	>	assertTrue(l.isSignalled());
1156		}});
1157
1158	<	t.start();
1158	>	waitForQueuedThread(l, t);
1159		assertFalse(l.isSignalled());
1160	<	Thread.sleep(SHORT_DELAY_MS);
1161	<	l.releaseShared(0);
1160	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1161	>	assertTrue(l.releaseShared(0));
1162		assertTrue(l.isSignalled());
1163	<	t.join();
1163	>	awaitTermination(t);
1164		}
1165
1166		/**
1167	<	* acquireSharedInterruptibly throws IE if interrupted before released
1167	>	* acquireSharedInterruptibly is interruptible
1168		*/
1169	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1169	>	public void testAcquireSharedInterruptibly_Interruptible() {
1170		final BooleanLatch l = new BooleanLatch();
1171	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1171	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1172		public void realRun() throws InterruptedException {
1173	<	threadAssertFalse(l.isSignalled());
1173	>	assertFalse(l.isSignalled());
1174		l.acquireSharedInterruptibly(0);
1175		}});
1176
1177	<	t.start();
1177	>	waitForQueuedThread(l, t);
1178		assertFalse(l.isSignalled());
1179		t.interrupt();
1180	<	t.join();
1180	>	awaitTermination(t);
1181	>	assertFalse(l.isSignalled());
1182		}
1183
1184		/**
1185	<	* acquireSharedTimed throws IE if interrupted before released
1185	>	* tryAcquireSharedNanos is interruptible
1186		*/
1187	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1187	>	public void testTryAcquireSharedNanos_Interruptible() {
1188		final BooleanLatch l = new BooleanLatch();
1189	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1189	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1190		public void realRun() throws InterruptedException {
1191	<	threadAssertFalse(l.isSignalled());
1192	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1191	>	assertFalse(l.isSignalled());
1192	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1193	>	l.tryAcquireSharedNanos(0, nanos);
1194		}});
1195
1196	<	t.start();
998	<	Thread.sleep(SHORT_DELAY_MS);
1196	>	waitForQueuedThread(l, t);
1197		assertFalse(l.isSignalled());
1198		t.interrupt();
1199	<	t.join();
1199	>	awaitTermination(t);
1200	>	assertFalse(l.isSignalled());
1201		}
1202
1203		/**
1204	<	* acquireSharedTimed times out if not released before timeout
1204	>	* tryAcquireSharedNanos times out if not released before timeout
1205		*/
1206	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1206	>	public void testTryAcquireSharedNanos_Timeout() {
1207		final BooleanLatch l = new BooleanLatch();
1208	<	Thread t = new Thread(new CheckedRunnable() {
1208	>	final BooleanLatch observedQueued = new BooleanLatch();
1209	>	Thread t = newStartedThread(new CheckedRunnable() {
1210		public void realRun() throws InterruptedException {
1211	<	threadAssertFalse(l.isSignalled());
1212	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1211	>	assertFalse(l.isSignalled());
1212	>	for (long millis = timeoutMillis();
1213	>	!observedQueued.isSignalled();
1214	>	millis *= 2) {
1215	>	long nanos = MILLISECONDS.toNanos(millis);
1216	>	long startTime = System.nanoTime();
1217	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1218	>	assertTrue(millisElapsedSince(startTime) >= millis);
1219	>	}
1220	>	assertFalse(l.isSignalled());
1221		}});
1222
1223	<	t.start();
1224	<	Thread.sleep(SHORT_DELAY_MS);
1223	>	waitForQueuedThread(l, t);
1224	>	observedQueued.releaseShared(0);
1225	>	assertFalse(l.isSignalled());
1226	>	awaitTermination(t);
1227		assertFalse(l.isSignalled());
1228	<	t.join();
1228	>	}
1229	>
1230	>	/**
1231	>	* awaitNanos/timed await with 0 wait times out immediately
1232	>	*/
1233	>	public void testAwait_Zero() throws InterruptedException {
1234	>	final Mutex sync = new Mutex();
1235	>	final ConditionObject c = sync.newCondition();
1236	>	sync.acquire();
1237	>	assertTrue(c.awaitNanos(0L) <= 0);
1238	>	assertFalse(c.await(0L, NANOSECONDS));
1239	>	sync.release();
1240	>	}
1241	>
1242	>	/**
1243	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1244	>	*/
1245	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1246	>	final Mutex sync = new Mutex();
1247	>	final ConditionObject c = sync.newCondition();
1248	>	sync.acquire();
1249	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1250	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1251	>	sync.release();
1252		}
1253
1254		}

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