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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.27 by jsr166, Wed Nov 18 08:26:24 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	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11
12	<	import junit.framework.*;
13	<	import java.util.*;
14	<	import java.util.concurrent.*;
15	<	import java.util.concurrent.locks.*;
16	<	import java.io.*;
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,
30	<	* 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	>	@Override public boolean tryAcquire(int acquires) {
51	>	assertEquals(LOCKED, acquires);
52	>	return compareAndSetState(UNLOCKED, LOCKED);
53		}
54
55	<	public boolean tryRelease(int releases) {
56	<	if (getState() == 0) throw new IllegalMonitorStateException();
57	<	setState(0);
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 55 | 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 65 | Line 105 | public class AbstractQueuedSynchronizerT
105		}
106
107		/**
108	<	* A runnable calling acquireInterruptibly
108	>	* A runnable calling acquireInterruptibly that does not expect to
109	>	* be interrupted.
110		*/
111	<	class InterruptibleSyncRunnable implements Runnable {
111	>	class InterruptibleSyncRunnable extends CheckedRunnable {
112		final Mutex sync;
113	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
114	<	public void run() {
115	<	try {
75	<	sync.acquireInterruptibly(1);
76	<	} catch (InterruptedException success) {}
113	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
114	>	public void realRun() throws InterruptedException {
115	>	sync.acquireInterruptibly();
116		}
117		}
118
80	–
119		/**
120		* A runnable calling acquireInterruptibly that expects to be
121	<	* interrupted
121	>	* interrupted.
122		*/
123	<	class InterruptedSyncRunnable implements Runnable {
123	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
124		final Mutex sync;
125	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
126	<	public void run() {
127	<	try {
90	<	sync.acquireInterruptibly(1);
91	<	threadShouldThrow();
92	<	} catch (InterruptedException success) {}
125	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
126	>	public void realRun() throws InterruptedException {
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 {
306	<	final Mutex sync = new Mutex();
130	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
305	>	public void testHasQueuedThreads() {
306	>	final Mutex sync = new Mutex();
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());
146	–	t1.join();
147	–	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();
327	>	final Mutex sync = new Mutex();
328		try {
329		sync.isQueued(null);
330		shouldThrow();
#	Line 159 | 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 {
338	<	final Mutex sync = new Mutex();
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));
185	–	Thread.sleep(SHORT_DELAY_MS);
359		assertFalse(sync.isQueued(t2));
187	–	t1.join();
188	–	t2.join();
360		}
361
362		/**
363		* getFirstQueuedThread returns first waiting thread or null if none
364		*/
365	<	public void testGetFirstQueuedThread() throws InterruptedException {
366	<	final Mutex sync = new Mutex();
196	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
365	>	public void testGetFirstQueuedThread() {
366	>	final Mutex sync = new Mutex();
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);
208	<	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());
213	–	t1.join();
214	–	t2.join();
381		}
382
217	–
383		/**
384		* hasContended reports false if no thread has ever blocked, else true
385		*/
386	<	public void testHasContended() throws InterruptedException {
387	<	final Mutex sync = new Mutex();
223	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
386	>	public void testHasContended() {
387	>	final Mutex sync = new Mutex();
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());
239	–	t1.join();
240	–	t2.join();
403		}
404
405		/**
406	<	* getQueuedThreads includes waiting threads
406	>	* getQueuedThreads returns all waiting threads
407		*/
408	<	public void testGetQueuedThreads() throws InterruptedException {
409	<	final Mutex sync = new Mutex();
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);
266	<	assertTrue(sync.getQueuedThreads().isEmpty());
267	<	t1.join();
268	<	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 {
437	<	final Mutex sync = new Mutex();
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);
294	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	<	t1.join();
296	<	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 {
465	<	final Mutex sync = new Mutex();
304	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
464	>	public void testGetSharedQueuedThreads_Exclusive() {
465	>	final Mutex sync = new Mutex();
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());
321	–	t1.join();
322	–	t2.join();
481		}
482
483		/**
484	<	* tryAcquireNanos is interruptible.
484	>	* getSharedQueuedThreads returns all shared waiting threads
485	>	*/
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 testInterruptedException2() throws InterruptedException {
513	<	final Mutex sync = new Mutex();
514	<	sync.acquire(1);
515	<	Thread t = new Thread(new Runnable() {
516	<	public void run() {
517	<	try {
518	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
335	<	threadShouldThrow();
336	<	} catch (InterruptedException success) {}
337	<	}
338	<	});
512	>	public void testTryAcquireNanos_Interruptible() {
513	>	final Mutex sync = new Mutex();
514	>	sync.acquire();
515	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
516	>	public void realRun() throws InterruptedException {
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
345	–
525		/**
526	<	* TryAcquire on exclusively held sync fails
526	>	* tryAcquire on exclusively held sync fails
527		*/
528	<	public void testTryAcquireWhenSynced() throws InterruptedException {
529	<	final Mutex sync = new Mutex();
530	<	sync.acquire(1);
531	<	Thread t = new Thread(new Runnable() {
532	<	public void run() {
533	<	threadAssertFalse(sync.tryAcquire(1));
534	<	}
356	<	});
528	>	public void testTryAcquireWhenSynced() {
529	>	final Mutex sync = new Mutex();
530	>	sync.acquire();
531	>	Thread t = newStartedThread(new CheckedRunnable() {
532	>	public void realRun() {
533	>	assertFalse(sync.tryAcquire());
534	>	}});
535
536	<	t.start();
537	<	t.join();
360	<	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 {
544	<	final Mutex sync = new Mutex();
545	<	sync.acquire(1);
546	<	Thread t = new Thread(new Runnable() {
547	<	public void run() {
548	<	try {
549	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
550	<	} catch (Exception ex) {
551	<	threadUnexpectedException();
552	<	}
376	<	}
377	<	});
378	<
379	<	t.start();
380	<	t.join();
381	<	sync.release(1);
382	<	}
543	>	public void testAcquireNanos_Timeout() {
544	>	final Mutex sync = new Mutex();
545	>	sync.acquire();
546	>	Thread t = newStartedThread(new CheckedRunnable() {
547	>	public void realRun() throws InterruptedException {
548	>	long startTime = System.nanoTime();
549	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
550	>	assertFalse(sync.tryAcquireNanos(nanos));
551	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
552	>	}});
553
554	+	awaitTermination(t);
555	+	sync.release();
556	+	}
557
558		/**
559		* getState is true when acquired and false when not
560		*/
561	<	public void testGetState() throws InterruptedException {
562	<	final Mutex sync = new Mutex();
563	<	sync.acquire(1);
391	<	assertTrue(sync.isHeldExclusively());
392	<	sync.release(1);
393	<	assertFalse(sync.isHeldExclusively());
394	<	Thread t = new Thread(new Runnable() {
395	<	public void run() {
396	<	sync.acquire(1);
397	<	try {
398	<	Thread.sleep(SMALL_DELAY_MS);
399	<	}
400	<	catch (Exception e) {
401	<	threadUnexpectedException();
402	<	}
403	<	sync.release(1);
404	<	}
405	<	});
406	<
407	<	t.start();
408	<	Thread.sleep(SHORT_DELAY_MS);
561	>	public void testGetState() {
562	>	final Mutex sync = new Mutex();
563	>	sync.acquire();
564		assertTrue(sync.isHeldExclusively());
565	<	t.join();
565	>	sync.release();
566		assertFalse(sync.isHeldExclusively());
412	–	}
413	–
567
568	<	/**
569	<	* acquireInterruptibly is interruptible.
570	<	*/
571	<	public void testAcquireInterruptibly1() throws InterruptedException {
572	<	final Mutex sync = new Mutex();
573	<	sync.acquire(1);
574	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
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();
573	>	assertTrue(acquired.releaseShared(0));
574	>	done.acquireShared(0);
575	>	sync.release();
576	>	}});
577
578	<	t.start();
579	<	Thread.sleep(SHORT_DELAY_MS);
580	<	t.interrupt();
581	<	Thread.sleep(SHORT_DELAY_MS);
582	<	sync.release(1);
428	<	t.join();
578	>	acquired.acquireShared(0);
579	>	assertTrue(sync.isHeldExclusively());
580	>	assertTrue(done.releaseShared(0));
581	>	awaitTermination(t);
582	>	assertFalse(sync.isHeldExclusively());
583		}
584
585		/**
586		* acquireInterruptibly succeeds when released, else is interruptible
587		*/
588	<	public void testAcquireInterruptibly2() throws InterruptedException {
589	<	final Mutex sync = new Mutex();
590	<	sync.acquireInterruptibly(1);
591	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
592	<	t.start();
588	>	public void testAcquireInterruptibly() throws InterruptedException {
589	>	final Mutex sync = new Mutex();
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());
441	–	t.join();
603		}
604
605		/**
606		* owns is true for a condition created by sync else false
607		*/
608		public void testOwns() {
609	<	final Mutex sync = new Mutex();
610	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
609	>	final Mutex sync = new Mutex();
610	>	final ConditionObject c = sync.newCondition();
611		final Mutex sync2 = new Mutex();
612		assertTrue(sync.owns(c));
613		assertFalse(sync2.owns(c));
#	Line 455 | Line 616 | public class AbstractQueuedSynchronizerT
616		/**
617		* Calling await without holding sync throws IllegalMonitorStateException
618		*/
619	<	public void testAwait_IllegalMonitor() throws InterruptedException {
620	<	final Mutex sync = new Mutex();
621	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
622	<	try {
623	<	c.await();
624	<	shouldThrow();
619	>	public void testAwait_IMSE() {
620	>	final Mutex sync = new Mutex();
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		}
465	–	catch (IllegalMonitorStateException success) {}
631		}
632
633		/**
634		* Calling signal without holding sync throws IllegalMonitorStateException
635		*/
636	<	public void testSignal_IllegalMonitor() {
637	<	final Mutex sync = new Mutex();
638	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
636	>	public void testSignal_IMSE() {
637	>	final Mutex sync = new Mutex();
638	>	final ConditionObject c = sync.newCondition();
639		try {
640		c.signal();
641		shouldThrow();
642	<	}
643	<	catch (IllegalMonitorStateException success) {}
479	<	}
480	<
481	<	/**
482	<	* awaitNanos without a signal times out
483	<	*/
484	<	public void testAwaitNanos_Timeout() throws InterruptedException {
485	<	final Mutex sync = new Mutex();
486	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
487	<	sync.acquire(1);
488	<	long t = c.awaitNanos(100);
489	<	assertTrue(t <= 0);
490	<	sync.release(1);
642	>	} catch (IllegalMonitorStateException success) {}
643	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
644		}
645
646		/**
647	<	*  Timed await without a signal times out
647	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
648		*/
649	<	public void testAwait_Timeout() throws InterruptedException {
650	<	final Mutex sync = new Mutex();
651	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
652	<	sync.acquire(1);
653	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
654	<	sync.release(1);
649	>	public void testSignalAll_IMSE() {
650	>	final Mutex sync = new Mutex();
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 {
662	<	final Mutex sync = new Mutex();
663	<	final AbstractQueuedSynchronizer.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)));
667	<	sync.release(1);
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 ConditionObject c = sync.newCondition();
667	>	sync.acquire();
668	>	assertAwaitTimesOut(c, awaitMethod);
669	>	sync.release();
670		}
671
672		/**
673	<	* await returns when signalled
674	<	*/
675	<	public void testAwait() throws InterruptedException {
676	<	final Mutex sync = new Mutex();
677	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
678	<	Thread t = new Thread(new Runnable() {
679	<	public void run() {
680	<	try {
681	<	sync.acquire(1);
682	<	c.await();
683	<	sync.release(1);
684	<	}
685	<	catch (InterruptedException e) {
686	<	threadUnexpectedException();
687	<	}
688	<	}
689	<	});
690	<
691	<	t.start();
692	<	Thread.sleep(SHORT_DELAY_MS);
693	<	sync.acquire(1);
673	>	* await/awaitNanos/awaitUntil returns when signalled
674	>	*/
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 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();
686	>	assertTrue(acquired.releaseShared(0));
687	>	await(c, awaitMethod);
688	>	sync.release();
689	>	}});
690	>
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
544	–
545	–
702		/**
703	<	* hasWaiters throws NPE if null
703	>	* hasWaiters(null) throws NullPointerException
704		*/
705		public void testHasWaitersNPE() {
706	<	final Mutex sync = new Mutex();
706	>	final Mutex sync = new Mutex();
707		try {
708		sync.hasWaiters(null);
709		shouldThrow();
#	Line 555 | 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();
717	>	final Mutex sync = new Mutex();
718		try {
719		sync.getWaitQueueLength(null);
720		shouldThrow();
721		} catch (NullPointerException success) {}
722		}
723
568	–
724		/**
725	<	* getWaitingThreads throws NPE if null
725	>	* getWaitingThreads(null) throws NullPointerException
726		*/
727		public void testGetWaitingThreadsNPE() {
728	<	final Mutex sync = new Mutex();
728	>	final Mutex sync = new Mutex();
729		try {
730		sync.getWaitingThreads(null);
731		shouldThrow();
732		} catch (NullPointerException success) {}
733		}
734
580	–
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();
741	<	final Mutex sync2 = new Mutex();
739	>	final Mutex sync = new Mutex();
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();
753	>	final Mutex sync = new Mutex();
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
606	–
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();
768	<	final Mutex sync2 = new Mutex();
766	>	final Mutex sync = new Mutex();
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();
780	>	final Mutex sync = new Mutex();
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
632	–
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();
795	<	final Mutex sync2 = new Mutex();
793	>	final Mutex sync = new Mutex();
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();
807	>	final Mutex sync = new Mutex();
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
658	–
659	–
816		/**
817		* hasWaiters returns true when a thread is waiting, else false
818		*/
819	<	public void testHasWaiters() throws InterruptedException {
820	<	final Mutex sync = new Mutex();
821	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
822	<	Thread t = new Thread(new Runnable() {
823	<	public void run() {
824	<	try {
825	<	sync.acquire(1);
826	<	threadAssertFalse(sync.hasWaiters(c));
827	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
828	<	c.await();
829	<	sync.release(1);
830	<	}
831	<	catch (InterruptedException e) {
832	<	threadUnexpectedException();
833	<	}
834	<	}
835	<	});
836	<
681	<	t.start();
682	<	Thread.sleep(SHORT_DELAY_MS);
683	<	sync.acquire(1);
819	>	public void testHasWaiters() {
820	>	final Mutex sync = new Mutex();
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();
826	>	assertHasWaitersLocked(sync, c, NO_THREADS);
827	>	assertFalse(sync.hasWaiters(c));
828	>	assertTrue(acquired.releaseShared(0));
829	>	c.await();
830	>	sync.release();
831	>	}});
832	>
833	>	acquired.acquireShared(0);
834	>	sync.acquire();
835	>	assertHasWaitersLocked(sync, c, t);
836	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
837		assertTrue(sync.hasWaiters(c));
685	–	assertEquals(1, sync.getWaitQueueLength(c));
838		c.signal();
839	<	sync.release(1);
840	<	Thread.sleep(SHORT_DELAY_MS);
689	<	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 {
852	<	final Mutex sync = new Mutex();
853	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
854	<	Thread t1 = new Thread(new Runnable() {
855	<	public void run() {
856	<	try {
857	<	sync.acquire(1);
858	<	threadAssertFalse(sync.hasWaiters(c));
859	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
860	<	c.await();
861	<	sync.release(1);
862	<	}
863	<	catch (InterruptedException e) {
864	<	threadUnexpectedException();
865	<	}
866	<	}
867	<	});
868	<
869	<	Thread t2 = new Thread(new Runnable() {
719	<	public void run() {
720	<	try {
721	<	sync.acquire(1);
722	<	threadAssertTrue(sync.hasWaiters(c));
723	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
724	<	c.await();
725	<	sync.release(1);
726	<	}
727	<	catch (InterruptedException e) {
728	<	threadUnexpectedException();
729	<	}
730	<	}
731	<	});
851	>	public void testGetWaitQueueLength() {
852	>	final Mutex sync = new Mutex();
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();
859	>	assertHasWaitersLocked(sync, c, NO_THREADS);
860	>	assertEquals(0, sync.getWaitQueueLength(c));
861	>	assertTrue(acquired1.releaseShared(0));
862	>	c.await();
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	<	t1.start();
872	<	Thread.sleep(SHORT_DELAY_MS);
873	<	t2.start();
874	<	Thread.sleep(SHORT_DELAY_MS);
875	<	sync.acquire(1);
876	<	assertTrue(sync.hasWaiters(c));
871	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
872	>	public void realRun() throws InterruptedException {
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();
879	>	}});
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);
743	<	sync.acquire(1);
744	<	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 {
900	<	final Mutex sync = new Mutex();
901	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
902	<	Thread t1 = new Thread(new Runnable() {
903	<	public void run() {
904	<	try {
905	<	sync.acquire(1);
906	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
907	<	c.await();
908	<	sync.release(1);
909	<	}
910	<	catch (InterruptedException e) {
911	<	threadUnexpectedException();
912	<	}
913	<	}
914	<	});
915	<
916	<	Thread t2 = new Thread(new Runnable() {
917	<	public void run() {
918	<	try {
919	<	sync.acquire(1);
920	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
921	<	c.await();
922	<	sync.release(1);
923	<	}
924	<	catch (InterruptedException e) {
925	<	threadUnexpectedException();
926	<	}
927	<	}
928	<	});
929	<
787	<	sync.acquire(1);
899	>	public void testGetWaitingThreads() {
900	>	final Mutex sync = new Mutex();
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();
907	>	assertHasWaitersLocked(sync, c, NO_THREADS);
908	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
909	>	assertTrue(acquired1.releaseShared(0));
910	>	c.await();
911	>	sync.release();
912	>	}});
913	>
914	>	final Thread t2 = new Thread(new CheckedRunnable() {
915	>	public void realRun() throws InterruptedException {
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();
924	>	}});
925	>
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);
806	<	t2.join(SHORT_DELAY_MS);
807	<	assertFalse(t1.isAlive());
808	<	assertFalse(t2.isAlive());
809	<	}
810	<
959	>	assertEquals(0, sync.getWaitingThreads(c).size());
960	>	sync.release();
961
962	<
963	<	/**
964	<	* awaitUninterruptibly doesn't abort on interrupt
815	<	*/
816	<	public void testAwaitUninterruptibly() throws InterruptedException {
817	<	final Mutex sync = new Mutex();
818	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
819	<	Thread t = new Thread(new Runnable() {
820	<	public void run() {
821	<	sync.acquire(1);
822	<	c.awaitUninterruptibly();
823	<	sync.release(1);
824	<	}
825	<	});
826	<
827	<	t.start();
828	<	Thread.sleep(SHORT_DELAY_MS);
829	<	t.interrupt();
830	<	sync.acquire(1);
831	<	c.signal();
832	<	sync.release(1);
833	<	t.join(SHORT_DELAY_MS);
834	<	assertFalse(t.isAlive());
962	>	awaitTermination(t1);
963	>	awaitTermination(t2);
964	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
965		}
966
967		/**
968	<	* await is interruptible
969	<	*/
970	<	public void testAwait_Interrupt() throws InterruptedException {
971	<	final Mutex sync = new Mutex();
972	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
973	<	Thread t = new Thread(new Runnable() {
974	<	public void run() {
975	<	try {
976	<	sync.acquire(1);
977	<	c.await();
978	<	sync.release(1);
979	<	threadShouldThrow();
980	<	}
981	<	catch (InterruptedException success) {
982	<	}
983	<	}
984	<	});
985	<
986	<	t.start();
987	<	Thread.sleep(SHORT_DELAY_MS);
968	>	* awaitUninterruptibly is uninterruptible
969	>	*/
970	>	public void testAwaitUninterruptibly() {
971	>	final Mutex sync = new Mutex();
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	>	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	<	* awaitNanos is interruptible
1003	<	*/
1004	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
1005	<	final Mutex sync = new Mutex();
1006	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1007	<	Thread t = new Thread(new Runnable() {
1008	<	public void run() {
1009	<	try {
1010	<	sync.acquire(1);
1011	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
1012	<	sync.release(1);
1013	<	threadShouldThrow();
1014	<	}
1015	<	catch (InterruptedException success) {
1016	<	}
1017	<	}
880	<	});
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();
1015	>	assertTrue(pleaseInterrupt.releaseShared(0));
1016	>	await(c, awaitMethod);
1017	>	}});
1018
1019	<	t.start();
883	<	Thread.sleep(SHORT_DELAY_MS);
1019	>	pleaseInterrupt.acquireShared(0);
1020		t.interrupt();
1021	<	t.join(SHORT_DELAY_MS);
886	<	assertFalse(t.isAlive());
887	<	}
888	<
889	<	/**
890	<	* awaitUntil is interruptible
891	<	*/
892	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
893	<	final Mutex sync = new Mutex();
894	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
895	<	Thread t = new Thread(new Runnable() {
896	<	public void run() {
897	<	try {
898	<	sync.acquire(1);
899	<	java.util.Date d = new java.util.Date();
900	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
901	<	sync.release(1);
902	<	threadShouldThrow();
903	<	}
904	<	catch (InterruptedException success) {
905	<	}
906	<	}
907	<	});
908	<
909	<	t.start();
910	<	Thread.sleep(SHORT_DELAY_MS);
911	<	t.interrupt();
912	<	t.join(SHORT_DELAY_MS);
913	<	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 Runnable() {
1031	<	public void run() {
1032	<	try {
1033	<	sync.acquire(1);
1034	<	c.await();
1035	<	sync.release(1);
1036	<	}
1037	<	catch (InterruptedException e) {
1038	<	threadUnexpectedException();
1039	<	}
1040	<	}
1041	<	});
1042	<
1043	<	Thread t2 = new Thread(new Runnable() {
1044	<	public void run() {
1045	<	try {
1046	<	sync.acquire(1);
1047	<	c.await();
1048	<	sync.release(1);
1049	<	}
1050	<	catch (InterruptedException e) {
1051	<	threadUnexpectedException();
1052	<	}
1053	<	}
1054	<	});
1055	<
1056	<	t1.start();
949	<	t2.start();
950	<	Thread.sleep(SHORT_DELAY_MS);
951	<	sync.acquire(1);
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();
1039	>	acquired1.releaseShared(0);
1040	>	await(c, awaitMethod);
1041	>	sync.release();
1042	>	}});
1043	>
1044	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1045	>	public void realRun() throws InterruptedException {
1046	>	sync.acquire();
1047	>	acquired2.releaseShared(0);
1048	>	await(c, awaitMethod);
1049	>	sync.release();
1050	>	}});
1051	>
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
960	–
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);
969	<	String ls = sync.toString();
970	<	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));
983	<	out.writeObject(l);
984	<	out.close();
985	<
986	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
987	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
988	<	Mutex r = (Mutex) in.readObject();
989	<	assertTrue(r.isHeldExclusively());
990	<	}
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
1101		*/
1102		public void testGetStateWithReleaseShared() {
1103	<	final BooleanLatch l = new BooleanLatch();
1104	<	assertFalse(l.isSignalled());
1105	<	l.releaseShared(0);
1106	<	assertTrue(l.isSignalled());
1103	>	final BooleanLatch l = new BooleanLatch();
1104	>	assertFalse(l.isSignalled());
1105	>	assertTrue(l.releaseShared(0));
1106	>	assertTrue(l.isSignalled());
1107		}
1108
1109		/**
1110		* releaseShared has no effect when already signalled
1111		*/
1112		public void testReleaseShared() {
1113	<	final BooleanLatch l = new BooleanLatch();
1114	<	assertFalse(l.isSignalled());
1115	<	l.releaseShared(0);
1116	<	assertTrue(l.isSignalled());
1117	<	l.releaseShared(0);
1118	<	assertTrue(l.isSignalled());
1113	>	final BooleanLatch l = new BooleanLatch();
1114	>	assertFalse(l.isSignalled());
1115	>	assertTrue(l.releaseShared(0));
1116	>	assertTrue(l.isSignalled());
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 {
1125	<	final BooleanLatch l = new BooleanLatch();
1124	>	public void testAcquireSharedInterruptibly() {
1125	>	final BooleanLatch l = new BooleanLatch();
1126
1127	<	Thread t = new Thread(new Runnable() {
1128	<	public void run() {
1129	<	try {
1130	<	threadAssertFalse(l.isSignalled());
1131	<	l.acquireSharedInterruptibly(0);
1132	<	threadAssertTrue(l.isSignalled());
1133	<	} catch (InterruptedException e) {
1134	<	threadUnexpectedException();
1029	<	}
1030	<	}
1031	<	});
1127	>	Thread t = newStartedThread(new CheckedRunnable() {
1128	>	public void realRun() throws InterruptedException {
1129	>	assertFalse(l.isSignalled());
1130	>	l.acquireSharedInterruptibly(0);
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
1041	–
1145		/**
1146	<	* acquireSharedTimed returns after release
1146	>	* tryAcquireSharedNanos returns after release, but not before
1147		*/
1148	<	public void testAsquireSharedTimed() throws InterruptedException {
1149	<	final BooleanLatch l = new BooleanLatch();
1047	<
1048	<	Thread t = new Thread(new Runnable() {
1049	<	public void run() {
1050	<	try {
1051	<	threadAssertFalse(l.isSignalled());
1052	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1053	<	threadAssertTrue(l.isSignalled());
1148	>	public void testTryAcquireSharedNanos() {
1149	>	final BooleanLatch l = new BooleanLatch();
1150
1151	<	} catch (InterruptedException e) {
1152	<	threadUnexpectedException();
1153	<	}
1154	<	}
1155	<	});
1151	>	Thread t = newStartedThread(new CheckedRunnable() {
1152	>	public void realRun() throws InterruptedException {
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 Runnable() {
1175	<	public void run() {
1176	<	try {
1177	<	threadAssertFalse(l.isSignalled());
1178	<	l.acquireSharedInterruptibly(0);
1179	<	threadShouldThrow();
1180	<	} catch (InterruptedException success) {}
1081	<	}
1082	<	});
1083	<	t.start();
1174	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1175	>	public void realRun() throws InterruptedException {
1176	>	assertFalse(l.isSignalled());
1177	>	l.acquireSharedInterruptibly(0);
1178	>	}});
1179	>
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 Runnable() {
1193	<	public void run() {
1194	<	try {
1195	<	threadAssertFalse(l.isSignalled());
1196	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1197	<	threadShouldThrow();
1198	<	} catch (InterruptedException success) {}
1199	<	}
1102	<	});
1103	<	t.start();
1104	<	Thread.sleep(SHORT_DELAY_MS);
1192	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1193	>	public void realRun() throws InterruptedException {
1194	>	assertFalse(l.isSignalled());
1195	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1196	>	l.tryAcquireSharedNanos(0, nanos);
1197	>	}});
1198	>
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 Runnable() {
1212	<	public void run() {
1213	<	try {
1214	<	threadAssertFalse(l.isSignalled());
1215	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1216	<	} catch (InterruptedException ie) {
1217	<	threadUnexpectedException();
1218	<	}
1211	>	final BooleanLatch observedQueued = new BooleanLatch();
1212	>	Thread t = newStartedThread(new CheckedRunnable() {
1213	>	public void realRun() throws InterruptedException {
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	<	});
1224	<	t.start();
1225	<	Thread.sleep(SHORT_DELAY_MS);
1223	>	assertFalse(l.isSignalled());
1224	>	}});
1225	>
1226	>	waitForQueuedThread(l, t);
1227	>	observedQueued.releaseShared(0);
1228	>	assertFalse(l.isSignalled());
1229	>	awaitTermination(t);
1230		assertFalse(l.isSignalled());
1128	–	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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