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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 1.46 by jsr166, Wed Dec 31 05:04:04 2014 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–
9		import junit.framework.*;
10		import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.util.concurrent.locks.*;
13	<	import java.io.*;
11	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
12	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
13	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer;
14	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer.ConditionObject;
15
16		public class AbstractQueuedSynchronizerTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20		public static Test suite() {
21		return new TestSuite(AbstractQueuedSynchronizerTest.class);
22		}
23
24		/**
25	<	* A simple mutex class, adapted from the
26	<	* AbstractQueuedSynchronizer javadoc.  Exclusive acquire tests
27	<	* exercise this as a sample user extension.  Other
28	<	* methods/features of AbstractQueuedSynchronizerTest are tested
29	<	* via other test classes, including those for ReentrantLock,
30	<	* ReentrantReadWriteLock, and Semaphore
25	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
26	>	* acquire tests exercise this as a sample user extension.  Other
27	>	* methods/features of AbstractQueuedSynchronizer are tested via
28	>	* other test classes, including those for ReentrantLock,
29	>	* ReentrantReadWriteLock, and Semaphore.
30		*/
31		static class Mutex extends AbstractQueuedSynchronizer {
32	<	public boolean isHeldExclusively() { return getState() == 1; }
32	>	/** An eccentric value for locked synchronizer state. */
33	>	static final int LOCKED = (1 << 31) | (1 << 15);
34	>
35	>	static final int UNLOCKED = 0;
36	>
37	>	@Override public boolean isHeldExclusively() {
38	>	int state = getState();
39	>	assertTrue(state == UNLOCKED || state == LOCKED);
40	>	return state == LOCKED;
41	>	}
42
43	<	public boolean tryAcquire(int acquires) {
44	<	assertTrue(acquires == 1);
45	<	return compareAndSetState(0, 1);
43	>	@Override public boolean tryAcquire(int acquires) {
44	>	assertEquals(LOCKED, acquires);
45	>	return compareAndSetState(UNLOCKED, LOCKED);
46		}
47
48	<	public boolean tryRelease(int releases) {
49	<	if (getState() == 0) throw new IllegalMonitorStateException();
50	<	setState(0);
48	>	@Override public boolean tryRelease(int releases) {
49	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
50	>	assertEquals(LOCKED, releases);
51	>	setState(UNLOCKED);
52		return true;
53		}
54
55	<	public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); }
55	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
56	>	return tryAcquireNanos(LOCKED, nanos);
57	>	}
58
59	<	}
59	>	public boolean tryAcquire() {
60	>	return tryAcquire(LOCKED);
61	>	}
62	>
63	>	public boolean tryRelease() {
64	>	return tryRelease(LOCKED);
65	>	}
66	>
67	>	public void acquire() {
68	>	acquire(LOCKED);
69	>	}
70	>
71	>	public void acquireInterruptibly() throws InterruptedException {
72	>	acquireInterruptibly(LOCKED);
73	>	}
74
75	+	public void release() {
76	+	release(LOCKED);
77	+	}
78	+
79	+	public ConditionObject newCondition() {
80	+	return new ConditionObject();
81	+	}
82	+	}
83
84		/**
85		* A simple latch class, to test shared mode.
#	Line 55 | Line 88 | public class AbstractQueuedSynchronizerT
88		public boolean isSignalled() { return getState() != 0; }
89
90		public int tryAcquireShared(int ignore) {
91	<	return isSignalled()? 1 : -1;
91	>	return isSignalled() ? 1 : -1;
92		}
93
94		public boolean tryReleaseShared(int ignore) {
#	Line 65 | Line 98 | public class AbstractQueuedSynchronizerT
98		}
99
100		/**
101	<	* A runnable calling acquireInterruptibly
101	>	* A runnable calling acquireInterruptibly that does not expect to
102	>	* be interrupted.
103		*/
104	<	class InterruptibleSyncRunnable implements Runnable {
104	>	class InterruptibleSyncRunnable extends CheckedRunnable {
105		final Mutex sync;
106	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
107	<	public void run() {
108	<	try {
75	<	sync.acquireInterruptibly(1);
76	<	} catch (InterruptedException success) {}
106	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
107	>	public void realRun() throws InterruptedException {
108	>	sync.acquireInterruptibly();
109		}
110		}
111
80	–
112		/**
113		* A runnable calling acquireInterruptibly that expects to be
114	<	* interrupted
114	>	* interrupted.
115		*/
116	<	class InterruptedSyncRunnable implements Runnable {
116	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
117		final Mutex sync;
118	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
119	<	public void run() {
120	<	try {
121	<	sync.acquireInterruptibly(1);
122	<	threadShouldThrow();
123	<	} catch (InterruptedException success) {}
118	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
119	>	public void realRun() throws InterruptedException {
120	>	sync.acquireInterruptibly();
121	>	}
122	>	}
123	>
124	>	/** A constant to clarify calls to checking methods below. */
125	>	static final Thread[] NO_THREADS = new Thread[0];
126	>
127	>	/**
128	>	* Spin-waits until sync.isQueued(t) becomes true.
129	>	*/
130	>	void waitForQueuedThread(AbstractQueuedSynchronizer sync, Thread t) {
131	>	long startTime = System.nanoTime();
132	>	while (!sync.isQueued(t)) {
133	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
134	>	throw new AssertionFailedError("timed out");
135	>	Thread.yield();
136	>	}
137	>	assertTrue(t.isAlive());
138	>	}
139	>
140	>	/**
141	>	* Checks that sync has exactly the given queued threads.
142	>	*/
143	>	void assertHasQueuedThreads(AbstractQueuedSynchronizer sync,
144	>	Thread... expected) {
145	>	Collection<Thread> actual = sync.getQueuedThreads();
146	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
147	>	assertEquals(expected.length, sync.getQueueLength());
148	>	assertEquals(expected.length, actual.size());
149	>	assertEquals(expected.length == 0, actual.isEmpty());
150	>	assertEquals(new HashSet<Thread>(actual),
151	>	new HashSet<Thread>(Arrays.asList(expected)));
152	>	}
153	>
154	>	/**
155	>	* Checks that sync has exactly the given (exclusive) queued threads.
156	>	*/
157	>	void assertHasExclusiveQueuedThreads(AbstractQueuedSynchronizer sync,
158	>	Thread... expected) {
159	>	assertHasQueuedThreads(sync, expected);
160	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
161	>	new HashSet<Thread>(sync.getQueuedThreads()));
162	>	assertEquals(0, sync.getSharedQueuedThreads().size());
163	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
164	>	}
165	>
166	>	/**
167	>	* Checks that sync has exactly the given (shared) queued threads.
168	>	*/
169	>	void assertHasSharedQueuedThreads(AbstractQueuedSynchronizer sync,
170	>	Thread... expected) {
171	>	assertHasQueuedThreads(sync, expected);
172	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
173	>	new HashSet<Thread>(sync.getQueuedThreads()));
174	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
175	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
176	>	}
177	>
178	>	/**
179	>	* Checks that condition c has exactly the given waiter threads,
180	>	* after acquiring mutex.
181	>	*/
182	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
183	>	Thread... threads) {
184	>	sync.acquire();
185	>	assertHasWaitersLocked(sync, c, threads);
186	>	sync.release();
187	>	}
188	>
189	>	/**
190	>	* Checks that condition c has exactly the given waiter threads.
191	>	*/
192	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
193	>	Thread... threads) {
194	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
195	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
196	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
197	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
198	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
199	>	new HashSet<Thread>(Arrays.asList(threads)));
200	>	}
201	>
202	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
203	>
204	>	/**
205	>	* Awaits condition using the specified AwaitMethod.
206	>	*/
207	>	void await(ConditionObject c, AwaitMethod awaitMethod)
208	>	throws InterruptedException {
209	>	long timeoutMillis = 2 * LONG_DELAY_MS;
210	>	switch (awaitMethod) {
211	>	case await:
212	>	c.await();
213	>	break;
214	>	case awaitTimed:
215	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
216	>	break;
217	>	case awaitNanos:
218	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
219	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
220	>	assertTrue(nanosRemaining > 0);
221	>	break;
222	>	case awaitUntil:
223	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
224	>	break;
225		}
226		}
227
228		/**
229	+	* Checks that awaiting the given condition times out (using the
230	+	* default timeout duration).
231	+	*/
232	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
233	+	long timeoutMillis = timeoutMillis();
234	+	long startTime = System.nanoTime();
235	+	try {
236	+	switch (awaitMethod) {
237	+	case awaitTimed:
238	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
239	+	break;
240	+	case awaitNanos:
241	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
242	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
243	+	assertTrue(nanosRemaining <= 0);
244	+	break;
245	+	case awaitUntil:
246	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
247	+	break;
248	+	default:
249	+	throw new UnsupportedOperationException();
250	+	}
251	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
252	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
253	+	}
254	+
255	+	/**
256		* isHeldExclusively is false upon construction
257		*/
258		public void testIsHeldExclusively() {
259	<	Mutex rl = new Mutex();
260	<	assertFalse(rl.isHeldExclusively());
259	>	Mutex sync = new Mutex();
260	>	assertFalse(sync.isHeldExclusively());
261		}
262
263		/**
264		* acquiring released sync succeeds
265		*/
266		public void testAcquire() {
267	<	Mutex rl = new Mutex();
268	<	rl.acquire(1);
269	<	assertTrue(rl.isHeldExclusively());
270	<	rl.release(1);
271	<	assertFalse(rl.isHeldExclusively());
267	>	Mutex sync = new Mutex();
268	>	sync.acquire();
269	>	assertTrue(sync.isHeldExclusively());
270	>	sync.release();
271	>	assertFalse(sync.isHeldExclusively());
272		}
273
274		/**
275	<	* tryAcquire on an released sync succeeds
275	>	* tryAcquire on a released sync succeeds
276		*/
277		public void testTryAcquire() {
278	<	Mutex rl = new Mutex();
279	<	assertTrue(rl.tryAcquire(1));
280	<	assertTrue(rl.isHeldExclusively());
281	<	rl.release(1);
278	>	Mutex sync = new Mutex();
279	>	assertTrue(sync.tryAcquire());
280	>	assertTrue(sync.isHeldExclusively());
281	>	sync.release();
282	>	assertFalse(sync.isHeldExclusively());
283		}
284
285		/**
286		* hasQueuedThreads reports whether there are waiting threads
287		*/
288	<	public void testhasQueuedThreads() throws InterruptedException {
289	<	final Mutex sync = new Mutex();
130	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
288	>	public void testHasQueuedThreads() {
289	>	final Mutex sync = new Mutex();
290		assertFalse(sync.hasQueuedThreads());
291	<	sync.acquire(1);
292	<	t1.start();
293	<	Thread.sleep(SHORT_DELAY_MS);
291	>	sync.acquire();
292	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
293	>	waitForQueuedThread(sync, t1);
294		assertTrue(sync.hasQueuedThreads());
295	<	t2.start();
296	<	Thread.sleep(SHORT_DELAY_MS);
295	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
296	>	waitForQueuedThread(sync, t2);
297		assertTrue(sync.hasQueuedThreads());
298		t1.interrupt();
299	<	Thread.sleep(SHORT_DELAY_MS);
299	>	awaitTermination(t1);
300		assertTrue(sync.hasQueuedThreads());
301	<	sync.release(1);
302	<	Thread.sleep(SHORT_DELAY_MS);
301	>	sync.release();
302	>	awaitTermination(t2);
303		assertFalse(sync.hasQueuedThreads());
146	–	t1.join();
147	–	t2.join();
304		}
305
306		/**
307	<	* isQueued(null) throws NPE
307	>	* isQueued(null) throws NullPointerException
308		*/
309		public void testIsQueuedNPE() {
310	<	final Mutex sync = new Mutex();
310	>	final Mutex sync = new Mutex();
311		try {
312		sync.isQueued(null);
313		shouldThrow();
#	Line 159 | Line 315 | public class AbstractQueuedSynchronizerT
315		}
316
317		/**
318	<	* isQueued reports whether a thread is queued.
318	>	* isQueued reports whether a thread is queued
319		*/
320	<	public void testIsQueued() throws InterruptedException {
321	<	final Mutex sync = new Mutex();
320	>	public void testIsQueued() {
321	>	final Mutex sync = new Mutex();
322		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
323		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
324		assertFalse(sync.isQueued(t1));
325		assertFalse(sync.isQueued(t2));
326	<	sync.acquire(1);
326	>	sync.acquire();
327		t1.start();
328	<	Thread.sleep(SHORT_DELAY_MS);
328	>	waitForQueuedThread(sync, t1);
329		assertTrue(sync.isQueued(t1));
330	+	assertFalse(sync.isQueued(t2));
331		t2.start();
332	<	Thread.sleep(SHORT_DELAY_MS);
332	>	waitForQueuedThread(sync, t2);
333		assertTrue(sync.isQueued(t1));
334		assertTrue(sync.isQueued(t2));
335		t1.interrupt();
336	<	Thread.sleep(SHORT_DELAY_MS);
336	>	awaitTermination(t1);
337		assertFalse(sync.isQueued(t1));
338		assertTrue(sync.isQueued(t2));
339	<	sync.release(1);
340	<	Thread.sleep(SHORT_DELAY_MS);
339	>	sync.release();
340	>	awaitTermination(t2);
341		assertFalse(sync.isQueued(t1));
185	–	Thread.sleep(SHORT_DELAY_MS);
342		assertFalse(sync.isQueued(t2));
187	–	t1.join();
188	–	t2.join();
343		}
344
345		/**
346		* getFirstQueuedThread returns first waiting thread or null if none
347		*/
348	<	public void testGetFirstQueuedThread() throws InterruptedException {
349	<	final Mutex sync = new Mutex();
196	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
348	>	public void testGetFirstQueuedThread() {
349	>	final Mutex sync = new Mutex();
350		assertNull(sync.getFirstQueuedThread());
351	<	sync.acquire(1);
352	<	t1.start();
353	<	Thread.sleep(SHORT_DELAY_MS);
351	>	sync.acquire();
352	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
353	>	waitForQueuedThread(sync, t1);
354		assertEquals(t1, sync.getFirstQueuedThread());
355	<	t2.start();
356	<	Thread.sleep(SHORT_DELAY_MS);
355	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
356	>	waitForQueuedThread(sync, t2);
357		assertEquals(t1, sync.getFirstQueuedThread());
358		t1.interrupt();
359	<	Thread.sleep(SHORT_DELAY_MS);
208	<	Thread.sleep(SHORT_DELAY_MS);
359	>	awaitTermination(t1);
360		assertEquals(t2, sync.getFirstQueuedThread());
361	<	sync.release(1);
362	<	Thread.sleep(SHORT_DELAY_MS);
361	>	sync.release();
362	>	awaitTermination(t2);
363		assertNull(sync.getFirstQueuedThread());
213	–	t1.join();
214	–	t2.join();
364		}
365
217	–
366		/**
367		* hasContended reports false if no thread has ever blocked, else true
368		*/
369	<	public void testHasContended() throws InterruptedException {
370	<	final Mutex sync = new Mutex();
223	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
369	>	public void testHasContended() {
370	>	final Mutex sync = new Mutex();
371		assertFalse(sync.hasContended());
372	<	sync.acquire(1);
373	<	t1.start();
374	<	Thread.sleep(SHORT_DELAY_MS);
372	>	sync.acquire();
373	>	assertFalse(sync.hasContended());
374	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
375	>	waitForQueuedThread(sync, t1);
376		assertTrue(sync.hasContended());
377	<	t2.start();
378	<	Thread.sleep(SHORT_DELAY_MS);
377	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
378	>	waitForQueuedThread(sync, t2);
379		assertTrue(sync.hasContended());
380		t1.interrupt();
381	<	Thread.sleep(SHORT_DELAY_MS);
381	>	awaitTermination(t1);
382		assertTrue(sync.hasContended());
383	<	sync.release(1);
384	<	Thread.sleep(SHORT_DELAY_MS);
383	>	sync.release();
384	>	awaitTermination(t2);
385		assertTrue(sync.hasContended());
239	–	t1.join();
240	–	t2.join();
386		}
387
388		/**
389	<	* getQueuedThreads includes waiting threads
389	>	* getQueuedThreads returns all waiting threads
390		*/
391	<	public void testGetQueuedThreads() throws InterruptedException {
392	<	final Mutex sync = new Mutex();
391	>	public void testGetQueuedThreads() {
392	>	final Mutex sync = new Mutex();
393		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
394		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
395	<	assertTrue(sync.getQueuedThreads().isEmpty());
396	<	sync.acquire(1);
397	<	assertTrue(sync.getQueuedThreads().isEmpty());
395	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
396	>	sync.acquire();
397	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
398		t1.start();
399	<	Thread.sleep(SHORT_DELAY_MS);
399	>	waitForQueuedThread(sync, t1);
400	>	assertHasExclusiveQueuedThreads(sync, t1);
401		assertTrue(sync.getQueuedThreads().contains(t1));
402	+	assertFalse(sync.getQueuedThreads().contains(t2));
403		t2.start();
404	<	Thread.sleep(SHORT_DELAY_MS);
404	>	waitForQueuedThread(sync, t2);
405	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
406		assertTrue(sync.getQueuedThreads().contains(t1));
407		assertTrue(sync.getQueuedThreads().contains(t2));
408		t1.interrupt();
409	<	Thread.sleep(SHORT_DELAY_MS);
410	<	assertFalse(sync.getQueuedThreads().contains(t1));
411	<	assertTrue(sync.getQueuedThreads().contains(t2));
412	<	sync.release(1);
413	<	Thread.sleep(SHORT_DELAY_MS);
266	<	assertTrue(sync.getQueuedThreads().isEmpty());
267	<	t1.join();
268	<	t2.join();
409	>	awaitTermination(t1);
410	>	assertHasExclusiveQueuedThreads(sync, t2);
411	>	sync.release();
412	>	awaitTermination(t2);
413	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
414		}
415
416		/**
417	<	* getExclusiveQueuedThreads includes waiting threads
417	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
418		*/
419	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
420	<	final Mutex sync = new Mutex();
419	>	public void testGetExclusiveQueuedThreads() {
420	>	final Mutex sync = new Mutex();
421		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
422		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
423	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
424	<	sync.acquire(1);
425	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
423	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
424	>	sync.acquire();
425	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
426		t1.start();
427	<	Thread.sleep(SHORT_DELAY_MS);
427	>	waitForQueuedThread(sync, t1);
428	>	assertHasExclusiveQueuedThreads(sync, t1);
429		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
430	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
431		t2.start();
432	<	Thread.sleep(SHORT_DELAY_MS);
432	>	waitForQueuedThread(sync, t2);
433	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
434		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
435		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
436		t1.interrupt();
437	<	Thread.sleep(SHORT_DELAY_MS);
438	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
439	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
440	<	sync.release(1);
441	<	Thread.sleep(SHORT_DELAY_MS);
294	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	<	t1.join();
296	<	t2.join();
437	>	awaitTermination(t1);
438	>	assertHasExclusiveQueuedThreads(sync, t2);
439	>	sync.release();
440	>	awaitTermination(t2);
441	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
442		}
443
444		/**
445		* getSharedQueuedThreads does not include exclusively waiting threads
446		*/
447	<	public void testGetSharedQueuedThreads() throws InterruptedException {
448	<	final Mutex sync = new Mutex();
304	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
447	>	public void testGetSharedQueuedThreads_Exclusive() {
448	>	final Mutex sync = new Mutex();
449		assertTrue(sync.getSharedQueuedThreads().isEmpty());
450	<	sync.acquire(1);
450	>	sync.acquire();
451		assertTrue(sync.getSharedQueuedThreads().isEmpty());
452	<	t1.start();
453	<	Thread.sleep(SHORT_DELAY_MS);
452	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
453	>	waitForQueuedThread(sync, t1);
454		assertTrue(sync.getSharedQueuedThreads().isEmpty());
455	<	t2.start();
456	<	Thread.sleep(SHORT_DELAY_MS);
455	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
456	>	waitForQueuedThread(sync, t2);
457		assertTrue(sync.getSharedQueuedThreads().isEmpty());
458		t1.interrupt();
459	<	Thread.sleep(SHORT_DELAY_MS);
459	>	awaitTermination(t1);
460		assertTrue(sync.getSharedQueuedThreads().isEmpty());
461	<	sync.release(1);
462	<	Thread.sleep(SHORT_DELAY_MS);
461	>	sync.release();
462	>	awaitTermination(t2);
463		assertTrue(sync.getSharedQueuedThreads().isEmpty());
321	–	t1.join();
322	–	t2.join();
464		}
465
466		/**
467	<	* tryAcquireNanos is interruptible.
467	>	* getSharedQueuedThreads returns all shared waiting threads
468	>	*/
469	>	public void testGetSharedQueuedThreads_Shared() {
470	>	final BooleanLatch l = new BooleanLatch();
471	>	assertHasSharedQueuedThreads(l, NO_THREADS);
472	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
473	>	public void realRun() throws InterruptedException {
474	>	l.acquireSharedInterruptibly(0);
475	>	}});
476	>	waitForQueuedThread(l, t1);
477	>	assertHasSharedQueuedThreads(l, t1);
478	>	Thread t2 = newStartedThread(new CheckedRunnable() {
479	>	public void realRun() throws InterruptedException {
480	>	l.acquireSharedInterruptibly(0);
481	>	}});
482	>	waitForQueuedThread(l, t2);
483	>	assertHasSharedQueuedThreads(l, t1, t2);
484	>	t1.interrupt();
485	>	awaitTermination(t1);
486	>	assertHasSharedQueuedThreads(l, t2);
487	>	assertTrue(l.releaseShared(0));
488	>	awaitTermination(t2);
489	>	assertHasSharedQueuedThreads(l, NO_THREADS);
490	>	}
491	>
492	>	/**
493	>	* tryAcquireNanos is interruptible
494		*/
495	<	public void testInterruptedException2() throws InterruptedException {
496	<	final Mutex sync = new Mutex();
497	<	sync.acquire(1);
498	<	Thread t = new Thread(new Runnable() {
499	<	public void run() {
500	<	try {
501	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
335	<	threadShouldThrow();
336	<	} catch (InterruptedException success) {}
337	<	}
338	<	});
495	>	public void testTryAcquireNanos_Interruptible() {
496	>	final Mutex sync = new Mutex();
497	>	sync.acquire();
498	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
499	>	public void realRun() throws InterruptedException {
500	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
501	>	}});
502
503	<	t.start();
503	>	waitForQueuedThread(sync, t);
504		t.interrupt();
505	<	t.join();
505	>	awaitTermination(t);
506		}
507
345	–
508		/**
509	<	* TryAcquire on exclusively held sync fails
509	>	* tryAcquire on exclusively held sync fails
510		*/
511	<	public void testTryAcquireWhenSynced() throws InterruptedException {
512	<	final Mutex sync = new Mutex();
513	<	sync.acquire(1);
514	<	Thread t = new Thread(new Runnable() {
515	<	public void run() {
516	<	threadAssertFalse(sync.tryAcquire(1));
517	<	}
356	<	});
511	>	public void testTryAcquireWhenSynced() {
512	>	final Mutex sync = new Mutex();
513	>	sync.acquire();
514	>	Thread t = newStartedThread(new CheckedRunnable() {
515	>	public void realRun() {
516	>	assertFalse(sync.tryAcquire());
517	>	}});
518
519	<	t.start();
520	<	t.join();
360	<	sync.release(1);
519	>	awaitTermination(t);
520	>	sync.release();
521		}
522
523		/**
524		* tryAcquireNanos on an exclusively held sync times out
525		*/
526	<	public void testAcquireNanos_Timeout() throws InterruptedException {
527	<	final Mutex sync = new Mutex();
528	<	sync.acquire(1);
529	<	Thread t = new Thread(new Runnable() {
530	<	public void run() {
531	<	try {
532	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
533	<	} catch (Exception ex) {
534	<	threadUnexpectedException();
535	<	}
376	<	}
377	<	});
378	<
379	<	t.start();
380	<	t.join();
381	<	sync.release(1);
382	<	}
526	>	public void testAcquireNanos_Timeout() {
527	>	final Mutex sync = new Mutex();
528	>	sync.acquire();
529	>	Thread t = newStartedThread(new CheckedRunnable() {
530	>	public void realRun() throws InterruptedException {
531	>	long startTime = System.nanoTime();
532	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
533	>	assertFalse(sync.tryAcquireNanos(nanos));
534	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
535	>	}});
536
537	+	awaitTermination(t);
538	+	sync.release();
539	+	}
540
541		/**
542		* getState is true when acquired and false when not
543		*/
544	<	public void testGetState() throws InterruptedException {
545	<	final Mutex sync = new Mutex();
546	<	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);
544	>	public void testGetState() {
545	>	final Mutex sync = new Mutex();
546	>	sync.acquire();
547		assertTrue(sync.isHeldExclusively());
548	<	t.join();
548	>	sync.release();
549		assertFalse(sync.isHeldExclusively());
412	–	}
413	–
550
551	<	/**
552	<	* acquireInterruptibly is interruptible.
553	<	*/
554	<	public void testAcquireInterruptibly1() throws InterruptedException {
555	<	final Mutex sync = new Mutex();
556	<	sync.acquire(1);
557	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
551	>	final BooleanLatch acquired = new BooleanLatch();
552	>	final BooleanLatch done = new BooleanLatch();
553	>	Thread t = newStartedThread(new CheckedRunnable() {
554	>	public void realRun() throws InterruptedException {
555	>	sync.acquire();
556	>	assertTrue(acquired.releaseShared(0));
557	>	done.acquireShared(0);
558	>	sync.release();
559	>	}});
560
561	<	t.start();
562	<	Thread.sleep(SHORT_DELAY_MS);
563	<	t.interrupt();
564	<	Thread.sleep(SHORT_DELAY_MS);
565	<	sync.release(1);
428	<	t.join();
561	>	acquired.acquireShared(0);
562	>	assertTrue(sync.isHeldExclusively());
563	>	assertTrue(done.releaseShared(0));
564	>	awaitTermination(t);
565	>	assertFalse(sync.isHeldExclusively());
566		}
567
568		/**
569		* acquireInterruptibly succeeds when released, else is interruptible
570		*/
571	<	public void testAcquireInterruptibly2() throws InterruptedException {
572	<	final Mutex sync = new Mutex();
573	<	sync.acquireInterruptibly(1);
574	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
575	<	t.start();
571	>	public void testAcquireInterruptibly() throws InterruptedException {
572	>	final Mutex sync = new Mutex();
573	>	final BooleanLatch threadStarted = new BooleanLatch();
574	>	sync.acquireInterruptibly();
575	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
576	>	public void realRun() throws InterruptedException {
577	>	assertTrue(threadStarted.releaseShared(0));
578	>	sync.acquireInterruptibly();
579	>	}});
580	>
581	>	threadStarted.acquireShared(0);
582	>	waitForQueuedThread(sync, t);
583		t.interrupt();
584	+	awaitTermination(t);
585		assertTrue(sync.isHeldExclusively());
441	–	t.join();
586		}
587
588		/**
589		* owns is true for a condition created by sync else false
590		*/
591		public void testOwns() {
592	<	final Mutex sync = new Mutex();
593	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
592	>	final Mutex sync = new Mutex();
593	>	final ConditionObject c = sync.newCondition();
594		final Mutex sync2 = new Mutex();
595		assertTrue(sync.owns(c));
596		assertFalse(sync2.owns(c));
#	Line 455 | Line 599 | public class AbstractQueuedSynchronizerT
599		/**
600		* Calling await without holding sync throws IllegalMonitorStateException
601		*/
602	<	public void testAwait_IllegalMonitor() throws InterruptedException {
603	<	final Mutex sync = new Mutex();
604	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
605	<	try {
606	<	c.await();
607	<	shouldThrow();
602	>	public void testAwait_IMSE() {
603	>	final Mutex sync = new Mutex();
604	>	final ConditionObject c = sync.newCondition();
605	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
606	>	long startTime = System.nanoTime();
607	>	try {
608	>	await(c, awaitMethod);
609	>	shouldThrow();
610	>	} catch (IllegalMonitorStateException success) {
611	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
612	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
613		}
465	–	catch (IllegalMonitorStateException success) {}
614		}
615
616		/**
617		* Calling signal without holding sync throws IllegalMonitorStateException
618		*/
619	<	public void testSignal_IllegalMonitor() {
620	<	final Mutex sync = new Mutex();
621	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
619	>	public void testSignal_IMSE() {
620	>	final Mutex sync = new Mutex();
621	>	final ConditionObject c = sync.newCondition();
622		try {
623		c.signal();
624		shouldThrow();
625	<	}
626	<	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);
625	>	} catch (IllegalMonitorStateException success) {}
626	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
627		}
628
629		/**
630	<	*  Timed await without a signal times out
630	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
631		*/
632	<	public void testAwait_Timeout() throws InterruptedException {
633	<	final Mutex sync = new Mutex();
634	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
635	<	sync.acquire(1);
636	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
637	<	sync.release(1);
632	>	public void testSignalAll_IMSE() {
633	>	final Mutex sync = new Mutex();
634	>	final ConditionObject c = sync.newCondition();
635	>	try {
636	>	c.signalAll();
637	>	shouldThrow();
638	>	} catch (IllegalMonitorStateException success) {}
639		}
640
641		/**
642	<	* awaitUntil without a signal times out
642	>	* await/awaitNanos/awaitUntil without a signal times out
643		*/
644	<	public void testAwaitUntil_Timeout() throws InterruptedException {
645	<	final Mutex sync = new Mutex();
646	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
647	<	sync.acquire(1);
648	<	java.util.Date d = new java.util.Date();
649	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
650	<	sync.release(1);
644	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
645	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
646	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
647	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
648	>	final Mutex sync = new Mutex();
649	>	final ConditionObject c = sync.newCondition();
650	>	sync.acquire();
651	>	assertAwaitTimesOut(c, awaitMethod);
652	>	sync.release();
653		}
654
655		/**
656	<	* await returns when signalled
657	<	*/
658	<	public void testAwait() throws InterruptedException {
659	<	final Mutex sync = new Mutex();
660	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
661	<	Thread t = new Thread(new Runnable() {
662	<	public void run() {
663	<	try {
664	<	sync.acquire(1);
665	<	c.await();
666	<	sync.release(1);
667	<	}
668	<	catch (InterruptedException e) {
669	<	threadUnexpectedException();
670	<	}
671	<	}
672	<	});
673	<
674	<	t.start();
675	<	Thread.sleep(SHORT_DELAY_MS);
676	<	sync.acquire(1);
656	>	* await/awaitNanos/awaitUntil returns when signalled
657	>	*/
658	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
659	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
660	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
661	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
662	>	public void testSignal(final AwaitMethod awaitMethod) {
663	>	final Mutex sync = new Mutex();
664	>	final ConditionObject c = sync.newCondition();
665	>	final BooleanLatch acquired = new BooleanLatch();
666	>	Thread t = newStartedThread(new CheckedRunnable() {
667	>	public void realRun() throws InterruptedException {
668	>	sync.acquire();
669	>	assertTrue(acquired.releaseShared(0));
670	>	await(c, awaitMethod);
671	>	sync.release();
672	>	}});
673	>
674	>	acquired.acquireShared(0);
675	>	sync.acquire();
676	>	assertHasWaitersLocked(sync, c, t);
677	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
678		c.signal();
679	<	sync.release(1);
680	<	t.join(SHORT_DELAY_MS);
681	<	assertFalse(t.isAlive());
679	>	assertHasWaitersLocked(sync, c, NO_THREADS);
680	>	assertHasExclusiveQueuedThreads(sync, t);
681	>	sync.release();
682	>	awaitTermination(t);
683		}
684
544	–
545	–
685		/**
686	<	* hasWaiters throws NPE if null
686	>	* hasWaiters(null) throws NullPointerException
687		*/
688		public void testHasWaitersNPE() {
689	<	final Mutex sync = new Mutex();
689	>	final Mutex sync = new Mutex();
690		try {
691		sync.hasWaiters(null);
692		shouldThrow();
#	Line 555 | Line 694 | public class AbstractQueuedSynchronizerT
694		}
695
696		/**
697	<	* getWaitQueueLength throws NPE if null
697	>	* getWaitQueueLength(null) throws NullPointerException
698		*/
699		public void testGetWaitQueueLengthNPE() {
700	<	final Mutex sync = new Mutex();
700	>	final Mutex sync = new Mutex();
701		try {
702		sync.getWaitQueueLength(null);
703		shouldThrow();
704		} catch (NullPointerException success) {}
705		}
706
568	–
707		/**
708	<	* getWaitingThreads throws NPE if null
708	>	* getWaitingThreads(null) throws NullPointerException
709		*/
710		public void testGetWaitingThreadsNPE() {
711	<	final Mutex sync = new Mutex();
711	>	final Mutex sync = new Mutex();
712		try {
713		sync.getWaitingThreads(null);
714		shouldThrow();
715		} catch (NullPointerException success) {}
716		}
717
580	–
718		/**
719	<	* hasWaiters throws IAE if not owned
719	>	* hasWaiters throws IllegalArgumentException if not owned
720		*/
721		public void testHasWaitersIAE() {
722	<	final Mutex sync = new Mutex();
723	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
724	<	final Mutex sync2 = new Mutex();
722	>	final Mutex sync = new Mutex();
723	>	final ConditionObject c = sync.newCondition();
724	>	final Mutex sync2 = new Mutex();
725		try {
726		sync2.hasWaiters(c);
727		shouldThrow();
728		} catch (IllegalArgumentException success) {}
729	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
730		}
731
732		/**
733	<	* hasWaiters throws IMSE if not synced
733	>	* hasWaiters throws IllegalMonitorStateException if not synced
734		*/
735		public void testHasWaitersIMSE() {
736	<	final Mutex sync = new Mutex();
737	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
736	>	final Mutex sync = new Mutex();
737	>	final ConditionObject c = sync.newCondition();
738		try {
739		sync.hasWaiters(c);
740		shouldThrow();
741		} catch (IllegalMonitorStateException success) {}
742	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
743		}
744
606	–
745		/**
746	<	* getWaitQueueLength throws IAE if not owned
746	>	* getWaitQueueLength throws IllegalArgumentException if not owned
747		*/
748		public void testGetWaitQueueLengthIAE() {
749	<	final Mutex sync = new Mutex();
750	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
751	<	final Mutex sync2 = new Mutex();
749	>	final Mutex sync = new Mutex();
750	>	final ConditionObject c = sync.newCondition();
751	>	final Mutex sync2 = new Mutex();
752		try {
753		sync2.getWaitQueueLength(c);
754		shouldThrow();
755		} catch (IllegalArgumentException success) {}
756	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
757		}
758
759		/**
760	<	* getWaitQueueLength throws IMSE if not synced
760	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
761		*/
762		public void testGetWaitQueueLengthIMSE() {
763	<	final Mutex sync = new Mutex();
764	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
763	>	final Mutex sync = new Mutex();
764	>	final ConditionObject c = sync.newCondition();
765		try {
766		sync.getWaitQueueLength(c);
767		shouldThrow();
768		} catch (IllegalMonitorStateException success) {}
769	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
770		}
771
632	–
772		/**
773	<	* getWaitingThreads throws IAE if not owned
773	>	* getWaitingThreads throws IllegalArgumentException if not owned
774		*/
775		public void testGetWaitingThreadsIAE() {
776	<	final Mutex sync = new Mutex();
777	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
778	<	final Mutex sync2 = new Mutex();
776	>	final Mutex sync = new Mutex();
777	>	final ConditionObject c = sync.newCondition();
778	>	final Mutex sync2 = new Mutex();
779		try {
780		sync2.getWaitingThreads(c);
781		shouldThrow();
782		} catch (IllegalArgumentException success) {}
783	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
784		}
785
786		/**
787	<	* getWaitingThreads throws IMSE if not synced
787	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
788		*/
789		public void testGetWaitingThreadsIMSE() {
790	<	final Mutex sync = new Mutex();
791	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
790	>	final Mutex sync = new Mutex();
791	>	final ConditionObject c = sync.newCondition();
792		try {
793		sync.getWaitingThreads(c);
794		shouldThrow();
795		} catch (IllegalMonitorStateException success) {}
796	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
797		}
798
658	–
659	–
799		/**
800		* hasWaiters returns true when a thread is waiting, else false
801		*/
802	<	public void testHasWaiters() throws InterruptedException {
803	<	final Mutex sync = new Mutex();
804	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
805	<	Thread t = new Thread(new Runnable() {
806	<	public void run() {
807	<	try {
808	<	sync.acquire(1);
809	<	threadAssertFalse(sync.hasWaiters(c));
810	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
811	<	c.await();
812	<	sync.release(1);
813	<	}
814	<	catch (InterruptedException e) {
815	<	threadUnexpectedException();
816	<	}
817	<	}
818	<	});
819	<
681	<	t.start();
682	<	Thread.sleep(SHORT_DELAY_MS);
683	<	sync.acquire(1);
802	>	public void testHasWaiters() {
803	>	final Mutex sync = new Mutex();
804	>	final ConditionObject c = sync.newCondition();
805	>	final BooleanLatch acquired = new BooleanLatch();
806	>	Thread t = newStartedThread(new CheckedRunnable() {
807	>	public void realRun() throws InterruptedException {
808	>	sync.acquire();
809	>	assertHasWaitersLocked(sync, c, NO_THREADS);
810	>	assertFalse(sync.hasWaiters(c));
811	>	assertTrue(acquired.releaseShared(0));
812	>	c.await();
813	>	sync.release();
814	>	}});
815	>
816	>	acquired.acquireShared(0);
817	>	sync.acquire();
818	>	assertHasWaitersLocked(sync, c, t);
819	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
820		assertTrue(sync.hasWaiters(c));
685	–	assertEquals(1, sync.getWaitQueueLength(c));
821		c.signal();
822	<	sync.release(1);
823	<	Thread.sleep(SHORT_DELAY_MS);
689	<	sync.acquire(1);
822	>	assertHasWaitersLocked(sync, c, NO_THREADS);
823	>	assertHasExclusiveQueuedThreads(sync, t);
824		assertFalse(sync.hasWaiters(c));
825	<	assertEquals(0, sync.getWaitQueueLength(c));
826	<	sync.release(1);
827	<	t.join(SHORT_DELAY_MS);
828	<	assertFalse(t.isAlive());
825	>	sync.release();
826	>
827	>	awaitTermination(t);
828	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
829		}
830
831		/**
832		* getWaitQueueLength returns number of waiting threads
833		*/
834	<	public void testGetWaitQueueLength() throws InterruptedException {
835	<	final Mutex sync = new Mutex();
836	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
837	<	Thread t1 = new Thread(new Runnable() {
838	<	public void run() {
839	<	try {
840	<	sync.acquire(1);
841	<	threadAssertFalse(sync.hasWaiters(c));
842	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
843	<	c.await();
844	<	sync.release(1);
845	<	}
846	<	catch (InterruptedException e) {
847	<	threadUnexpectedException();
848	<	}
849	<	}
850	<	});
851	<
852	<	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	<	});
834	>	public void testGetWaitQueueLength() {
835	>	final Mutex sync = new Mutex();
836	>	final ConditionObject c = sync.newCondition();
837	>	final BooleanLatch acquired1 = new BooleanLatch();
838	>	final BooleanLatch acquired2 = new BooleanLatch();
839	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
840	>	public void realRun() throws InterruptedException {
841	>	sync.acquire();
842	>	assertHasWaitersLocked(sync, c, NO_THREADS);
843	>	assertEquals(0, sync.getWaitQueueLength(c));
844	>	assertTrue(acquired1.releaseShared(0));
845	>	c.await();
846	>	sync.release();
847	>	}});
848	>	acquired1.acquireShared(0);
849	>	sync.acquire();
850	>	assertHasWaitersLocked(sync, c, t1);
851	>	assertEquals(1, sync.getWaitQueueLength(c));
852	>	sync.release();
853
854	<	t1.start();
855	<	Thread.sleep(SHORT_DELAY_MS);
856	<	t2.start();
857	<	Thread.sleep(SHORT_DELAY_MS);
858	<	sync.acquire(1);
859	<	assertTrue(sync.hasWaiters(c));
854	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
855	>	public void realRun() throws InterruptedException {
856	>	sync.acquire();
857	>	assertHasWaitersLocked(sync, c, t1);
858	>	assertEquals(1, sync.getWaitQueueLength(c));
859	>	assertTrue(acquired2.releaseShared(0));
860	>	c.await();
861	>	sync.release();
862	>	}});
863	>	acquired2.acquireShared(0);
864	>	sync.acquire();
865	>	assertHasWaitersLocked(sync, c, t1, t2);
866	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
867		assertEquals(2, sync.getWaitQueueLength(c));
868		c.signalAll();
869	<	sync.release(1);
870	<	Thread.sleep(SHORT_DELAY_MS);
743	<	sync.acquire(1);
744	<	assertFalse(sync.hasWaiters(c));
869	>	assertHasWaitersLocked(sync, c, NO_THREADS);
870	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
871		assertEquals(0, sync.getWaitQueueLength(c));
872	<	sync.release(1);
873	<	t1.join(SHORT_DELAY_MS);
874	<	t2.join(SHORT_DELAY_MS);
875	<	assertFalse(t1.isAlive());
876	<	assertFalse(t2.isAlive());
872	>	sync.release();
873	>
874	>	awaitTermination(t1);
875	>	awaitTermination(t2);
876	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
877		}
878
879		/**
880		* getWaitingThreads returns only and all waiting threads
881		*/
882	<	public void testGetWaitingThreads() throws InterruptedException {
883	<	final Mutex sync = new Mutex();
884	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
885	<	Thread t1 = new Thread(new Runnable() {
886	<	public void run() {
887	<	try {
888	<	sync.acquire(1);
889	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
890	<	c.await();
891	<	sync.release(1);
892	<	}
893	<	catch (InterruptedException e) {
894	<	threadUnexpectedException();
895	<	}
896	<	}
897	<	});
898	<
899	<	Thread t2 = new Thread(new Runnable() {
900	<	public void run() {
901	<	try {
902	<	sync.acquire(1);
903	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
904	<	c.await();
905	<	sync.release(1);
906	<	}
907	<	catch (InterruptedException e) {
908	<	threadUnexpectedException();
909	<	}
910	<	}
911	<	});
912	<
787	<	sync.acquire(1);
882	>	public void testGetWaitingThreads() {
883	>	final Mutex sync = new Mutex();
884	>	final ConditionObject c = sync.newCondition();
885	>	final BooleanLatch acquired1 = new BooleanLatch();
886	>	final BooleanLatch acquired2 = new BooleanLatch();
887	>	final Thread t1 = new Thread(new CheckedRunnable() {
888	>	public void realRun() throws InterruptedException {
889	>	sync.acquire();
890	>	assertHasWaitersLocked(sync, c, NO_THREADS);
891	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
892	>	assertTrue(acquired1.releaseShared(0));
893	>	c.await();
894	>	sync.release();
895	>	}});
896	>
897	>	final Thread t2 = new Thread(new CheckedRunnable() {
898	>	public void realRun() throws InterruptedException {
899	>	sync.acquire();
900	>	assertHasWaitersLocked(sync, c, t1);
901	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
902	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
903	>	assertEquals(1, sync.getWaitingThreads(c).size());
904	>	assertTrue(acquired2.releaseShared(0));
905	>	c.await();
906	>	sync.release();
907	>	}});
908	>
909	>	sync.acquire();
910	>	assertHasWaitersLocked(sync, c, NO_THREADS);
911	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
912	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
913		assertTrue(sync.getWaitingThreads(c).isEmpty());
914	<	sync.release(1);
914	>	assertEquals(0, sync.getWaitingThreads(c).size());
915	>	sync.release();
916	>
917		t1.start();
918	<	Thread.sleep(SHORT_DELAY_MS);
918	>	acquired1.acquireShared(0);
919	>	sync.acquire();
920	>	assertHasWaitersLocked(sync, c, t1);
921	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
922	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
923	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
924	>	assertEquals(1, sync.getWaitingThreads(c).size());
925	>	sync.release();
926	>
927		t2.start();
928	<	Thread.sleep(SHORT_DELAY_MS);
929	<	sync.acquire(1);
930	<	assertTrue(sync.hasWaiters(c));
928	>	acquired2.acquireShared(0);
929	>	sync.acquire();
930	>	assertHasWaitersLocked(sync, c, t1, t2);
931	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
932		assertTrue(sync.getWaitingThreads(c).contains(t1));
933		assertTrue(sync.getWaitingThreads(c).contains(t2));
934	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
935	+	assertEquals(2, sync.getWaitingThreads(c).size());
936		c.signalAll();
937	<	sync.release(1);
938	<	Thread.sleep(SHORT_DELAY_MS);
939	<	sync.acquire(1);
940	<	assertFalse(sync.hasWaiters(c));
937	>	assertHasWaitersLocked(sync, c, NO_THREADS);
938	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
939	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
940	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
941		assertTrue(sync.getWaitingThreads(c).isEmpty());
942	<	sync.release(1);
943	<	t1.join(SHORT_DELAY_MS);
806	<	t2.join(SHORT_DELAY_MS);
807	<	assertFalse(t1.isAlive());
808	<	assertFalse(t2.isAlive());
809	<	}
810	<
942	>	assertEquals(0, sync.getWaitingThreads(c).size());
943	>	sync.release();
944
945	<
946	<	/**
947	<	* 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());
945	>	awaitTermination(t1);
946	>	awaitTermination(t2);
947	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
948		}
949
950		/**
951	<	* await is interruptible
952	<	*/
953	<	public void testAwait_Interrupt() throws InterruptedException {
954	<	final Mutex sync = new Mutex();
955	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
956	<	Thread t = new Thread(new Runnable() {
957	<	public void run() {
958	<	try {
959	<	sync.acquire(1);
960	<	c.await();
961	<	sync.release(1);
962	<	threadShouldThrow();
963	<	}
964	<	catch (InterruptedException success) {
965	<	}
966	<	}
967	<	});
968	<
969	<	t.start();
970	<	Thread.sleep(SHORT_DELAY_MS);
858	<	t.interrupt();
859	<	t.join(SHORT_DELAY_MS);
860	<	assertFalse(t.isAlive());
861	<	}
862	<
863	<	/**
864	<	* awaitNanos is interruptible
865	<	*/
866	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
867	<	final Mutex sync = new Mutex();
868	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
869	<	Thread t = new Thread(new Runnable() {
870	<	public void run() {
871	<	try {
872	<	sync.acquire(1);
873	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
874	<	sync.release(1);
875	<	threadShouldThrow();
876	<	}
877	<	catch (InterruptedException success) {
878	<	}
879	<	}
880	<	});
881	<
882	<	t.start();
883	<	Thread.sleep(SHORT_DELAY_MS);
951	>	* awaitUninterruptibly is uninterruptible
952	>	*/
953	>	public void testAwaitUninterruptibly() {
954	>	final Mutex sync = new Mutex();
955	>	final ConditionObject c = sync.newCondition();
956	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
957	>	Thread t = newStartedThread(new CheckedRunnable() {
958	>	public void realRun() {
959	>	sync.acquire();
960	>	assertTrue(pleaseInterrupt.releaseShared(0));
961	>	c.awaitUninterruptibly();
962	>	assertTrue(Thread.interrupted());
963	>	assertHasWaitersLocked(sync, c, NO_THREADS);
964	>	sync.release();
965	>	}});
966	>
967	>	pleaseInterrupt.acquireShared(0);
968	>	sync.acquire();
969	>	assertHasWaitersLocked(sync, c, t);
970	>	sync.release();
971		t.interrupt();
972	<	t.join(SHORT_DELAY_MS);
973	<	assertFalse(t.isAlive());
972	>	assertHasWaitersUnlocked(sync, c, t);
973	>	assertThreadStaysAlive(t);
974	>	sync.acquire();
975	>	assertHasWaitersLocked(sync, c, t);
976	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
977	>	c.signal();
978	>	assertHasWaitersLocked(sync, c, NO_THREADS);
979	>	assertHasExclusiveQueuedThreads(sync, t);
980	>	sync.release();
981	>	awaitTermination(t);
982		}
983
984		/**
985	<	* awaitUntil is interruptible
986	<	*/
987	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
988	<	final Mutex sync = new Mutex();
989	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
990	<	Thread t = new Thread(new Runnable() {
991	<	public void run() {
992	<	try {
993	<	sync.acquire(1);
994	<	java.util.Date d = new java.util.Date();
995	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
996	<	sync.release(1);
997	<	threadShouldThrow();
998	<	}
999	<	catch (InterruptedException success) {
1000	<	}
906	<	}
907	<	});
985	>	* await/awaitNanos/awaitUntil is interruptible
986	>	*/
987	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
988	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
989	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
990	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
991	>	public void testInterruptible(final AwaitMethod awaitMethod) {
992	>	final Mutex sync = new Mutex();
993	>	final ConditionObject c = sync.newCondition();
994	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
995	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
996	>	public void realRun() throws InterruptedException {
997	>	sync.acquire();
998	>	assertTrue(pleaseInterrupt.releaseShared(0));
999	>	await(c, awaitMethod);
1000	>	}});
1001
1002	<	t.start();
910	<	Thread.sleep(SHORT_DELAY_MS);
1002	>	pleaseInterrupt.acquireShared(0);
1003		t.interrupt();
1004	<	t.join(SHORT_DELAY_MS);
913	<	assertFalse(t.isAlive());
1004	>	awaitTermination(t);
1005		}
1006
1007		/**
1008		* signalAll wakes up all threads
1009		*/
1010	<	public void testSignalAll() throws InterruptedException {
1011	<	final Mutex sync = new Mutex();
1012	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1013	<	Thread t1 = new Thread(new Runnable() {
1014	<	public void run() {
1015	<	try {
1016	<	sync.acquire(1);
1017	<	c.await();
1018	<	sync.release(1);
1019	<	}
1020	<	catch (InterruptedException e) {
1021	<	threadUnexpectedException();
1022	<	}
1023	<	}
1024	<	});
1025	<
1026	<	Thread t2 = new Thread(new Runnable() {
1027	<	public void run() {
1028	<	try {
1029	<	sync.acquire(1);
1030	<	c.await();
1031	<	sync.release(1);
1032	<	}
1033	<	catch (InterruptedException e) {
1034	<	threadUnexpectedException();
1035	<	}
1036	<	}
1037	<	});
1038	<
1039	<	t1.start();
949	<	t2.start();
950	<	Thread.sleep(SHORT_DELAY_MS);
951	<	sync.acquire(1);
1010	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1011	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1012	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1013	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1014	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1015	>	final Mutex sync = new Mutex();
1016	>	final ConditionObject c = sync.newCondition();
1017	>	final BooleanLatch acquired1 = new BooleanLatch();
1018	>	final BooleanLatch acquired2 = new BooleanLatch();
1019	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1020	>	public void realRun() throws InterruptedException {
1021	>	sync.acquire();
1022	>	acquired1.releaseShared(0);
1023	>	await(c, awaitMethod);
1024	>	sync.release();
1025	>	}});
1026	>
1027	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1028	>	public void realRun() throws InterruptedException {
1029	>	sync.acquire();
1030	>	acquired2.releaseShared(0);
1031	>	await(c, awaitMethod);
1032	>	sync.release();
1033	>	}});
1034	>
1035	>	acquired1.acquireShared(0);
1036	>	acquired2.acquireShared(0);
1037	>	sync.acquire();
1038	>	assertHasWaitersLocked(sync, c, t1, t2);
1039	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1040		c.signalAll();
1041	<	sync.release(1);
1042	<	t1.join(SHORT_DELAY_MS);
1043	<	t2.join(SHORT_DELAY_MS);
1044	<	assertFalse(t1.isAlive());
1045	<	assertFalse(t2.isAlive());
1041	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1042	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1043	>	sync.release();
1044	>	awaitTermination(t1);
1045	>	awaitTermination(t2);
1046		}
1047
960	–
1048		/**
1049		* toString indicates current state
1050		*/
1051		public void testToString() {
1052		Mutex sync = new Mutex();
1053	<	String us = sync.toString();
1054	<	assertTrue(us.indexOf("State = 0") >= 0);
1055	<	sync.acquire(1);
969	<	String ls = sync.toString();
970	<	assertTrue(ls.indexOf("State = 1") >= 0);
1053	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1054	>	sync.acquire();
1055	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1056		}
1057
1058		/**
1059	<	* A serialized AQS deserializes with current state
1060	<	*/
1061	<	public void testSerialization() throws Exception {
1062	<	Mutex l = new Mutex();
1063	<	l.acquire(1);
1064	<	assertTrue(l.isHeldExclusively());
1065	<
1066	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1067	<	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	<	}
1059	>	* A serialized AQS deserializes with current state, but no queued threads
1060	>	*/
1061	>	public void testSerialization() {
1062	>	Mutex sync = new Mutex();
1063	>	assertFalse(serialClone(sync).isHeldExclusively());
1064	>	sync.acquire();
1065	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1066	>	waitForQueuedThread(sync, t);
1067	>	assertTrue(sync.isHeldExclusively());
1068
1069	+	Mutex clone = serialClone(sync);
1070	+	assertTrue(clone.isHeldExclusively());
1071	+	assertHasExclusiveQueuedThreads(sync, t);
1072	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1073	+	t.interrupt();
1074	+	awaitTermination(t);
1075	+	sync.release();
1076	+	assertFalse(sync.isHeldExclusively());
1077	+	assertTrue(clone.isHeldExclusively());
1078	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1079	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1080	+	}
1081
1082		/**
1083		* tryReleaseShared setting state changes getState
1084		*/
1085		public void testGetStateWithReleaseShared() {
1086	<	final BooleanLatch l = new BooleanLatch();
1087	<	assertFalse(l.isSignalled());
1088	<	l.releaseShared(0);
1089	<	assertTrue(l.isSignalled());
1086	>	final BooleanLatch l = new BooleanLatch();
1087	>	assertFalse(l.isSignalled());
1088	>	assertTrue(l.releaseShared(0));
1089	>	assertTrue(l.isSignalled());
1090		}
1091
1092		/**
1093		* releaseShared has no effect when already signalled
1094		*/
1095		public void testReleaseShared() {
1096	<	final BooleanLatch l = new BooleanLatch();
1097	<	assertFalse(l.isSignalled());
1098	<	l.releaseShared(0);
1099	<	assertTrue(l.isSignalled());
1100	<	l.releaseShared(0);
1101	<	assertTrue(l.isSignalled());
1096	>	final BooleanLatch l = new BooleanLatch();
1097	>	assertFalse(l.isSignalled());
1098	>	assertTrue(l.releaseShared(0));
1099	>	assertTrue(l.isSignalled());
1100	>	assertTrue(l.releaseShared(0));
1101	>	assertTrue(l.isSignalled());
1102		}
1103
1104		/**
1105		* acquireSharedInterruptibly returns after release, but not before
1106		*/
1107	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1108	<	final BooleanLatch l = new BooleanLatch();
1107	>	public void testAcquireSharedInterruptibly() {
1108	>	final BooleanLatch l = new BooleanLatch();
1109
1110	<	Thread t = new Thread(new Runnable() {
1111	<	public void run() {
1112	<	try {
1113	<	threadAssertFalse(l.isSignalled());
1114	<	l.acquireSharedInterruptibly(0);
1115	<	threadAssertTrue(l.isSignalled());
1116	<	} catch (InterruptedException e) {
1117	<	threadUnexpectedException();
1029	<	}
1030	<	}
1031	<	});
1110	>	Thread t = newStartedThread(new CheckedRunnable() {
1111	>	public void realRun() throws InterruptedException {
1112	>	assertFalse(l.isSignalled());
1113	>	l.acquireSharedInterruptibly(0);
1114	>	assertTrue(l.isSignalled());
1115	>	l.acquireSharedInterruptibly(0);
1116	>	assertTrue(l.isSignalled());
1117	>	}});
1118
1119	<	t.start();
1119	>	waitForQueuedThread(l, t);
1120		assertFalse(l.isSignalled());
1121	<	Thread.sleep(SHORT_DELAY_MS);
1122	<	l.releaseShared(0);
1121	>	assertThreadStaysAlive(t);
1122	>	assertHasSharedQueuedThreads(l, t);
1123	>	assertTrue(l.releaseShared(0));
1124		assertTrue(l.isSignalled());
1125	<	t.join();
1125	>	awaitTermination(t);
1126		}
1127
1041	–
1128		/**
1129	<	* acquireSharedTimed returns after release
1129	>	* tryAcquireSharedNanos returns after release, but not before
1130		*/
1131	<	public void testAsquireSharedTimed() throws InterruptedException {
1132	<	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());
1131	>	public void testTryAcquireSharedNanos() {
1132	>	final BooleanLatch l = new BooleanLatch();
1133
1134	<	} catch (InterruptedException e) {
1135	<	threadUnexpectedException();
1136	<	}
1137	<	}
1138	<	});
1134	>	Thread t = newStartedThread(new CheckedRunnable() {
1135	>	public void realRun() throws InterruptedException {
1136	>	assertFalse(l.isSignalled());
1137	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1138	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1139	>	assertTrue(l.isSignalled());
1140	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1141	>	assertTrue(l.isSignalled());
1142	>	}});
1143
1144	<	t.start();
1144	>	waitForQueuedThread(l, t);
1145		assertFalse(l.isSignalled());
1146	<	Thread.sleep(SHORT_DELAY_MS);
1147	<	l.releaseShared(0);
1146	>	assertThreadStaysAlive(t);
1147	>	assertTrue(l.releaseShared(0));
1148		assertTrue(l.isSignalled());
1149	<	t.join();
1149	>	awaitTermination(t);
1150		}
1151
1152		/**
1153	<	* acquireSharedInterruptibly throws IE if interrupted before released
1153	>	* acquireSharedInterruptibly is interruptible
1154		*/
1155	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1155	>	public void testAcquireSharedInterruptibly_Interruptible() {
1156		final BooleanLatch l = new BooleanLatch();
1157	<	Thread t = new Thread(new Runnable() {
1158	<	public void run() {
1159	<	try {
1160	<	threadAssertFalse(l.isSignalled());
1161	<	l.acquireSharedInterruptibly(0);
1162	<	threadShouldThrow();
1163	<	} catch (InterruptedException success) {}
1081	<	}
1082	<	});
1083	<	t.start();
1157	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1158	>	public void realRun() throws InterruptedException {
1159	>	assertFalse(l.isSignalled());
1160	>	l.acquireSharedInterruptibly(0);
1161	>	}});
1162	>
1163	>	waitForQueuedThread(l, t);
1164		assertFalse(l.isSignalled());
1165		t.interrupt();
1166	<	t.join();
1166	>	awaitTermination(t);
1167	>	assertFalse(l.isSignalled());
1168		}
1169
1170		/**
1171	<	* acquireSharedTimed throws IE if interrupted before released
1171	>	* tryAcquireSharedNanos is interruptible
1172		*/
1173	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1173	>	public void testTryAcquireSharedNanos_Interruptible() {
1174		final BooleanLatch l = new BooleanLatch();
1175	<	Thread t = new Thread(new Runnable() {
1176	<	public void run() {
1177	<	try {
1178	<	threadAssertFalse(l.isSignalled());
1179	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1180	<	threadShouldThrow();
1181	<	} catch (InterruptedException success) {}
1182	<	}
1102	<	});
1103	<	t.start();
1104	<	Thread.sleep(SHORT_DELAY_MS);
1175	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1176	>	public void realRun() throws InterruptedException {
1177	>	assertFalse(l.isSignalled());
1178	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1179	>	l.tryAcquireSharedNanos(0, nanos);
1180	>	}});
1181	>
1182	>	waitForQueuedThread(l, t);
1183		assertFalse(l.isSignalled());
1184		t.interrupt();
1185	<	t.join();
1185	>	awaitTermination(t);
1186	>	assertFalse(l.isSignalled());
1187		}
1188
1189		/**
1190	<	* acquireSharedTimed times out if not released before timeout
1190	>	* tryAcquireSharedNanos times out if not released before timeout
1191		*/
1192	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1192	>	public void testTryAcquireSharedNanos_Timeout() {
1193		final BooleanLatch l = new BooleanLatch();
1194	<	Thread t = new Thread(new Runnable() {
1195	<	public void run() {
1196	<	try {
1197	<	threadAssertFalse(l.isSignalled());
1198	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1199	<	} catch (InterruptedException ie) {
1200	<	threadUnexpectedException();
1201	<	}
1194	>	final BooleanLatch observedQueued = new BooleanLatch();
1195	>	final long timeoutMillis = timeoutMillis();
1196	>	Thread t = newStartedThread(new CheckedRunnable() {
1197	>	public void realRun() throws InterruptedException {
1198	>	assertFalse(l.isSignalled());
1199	>	for (long millis = timeoutMillis();
1200	>	!observedQueued.isSignalled();
1201	>	millis *= 2) {
1202	>	long nanos = MILLISECONDS.toNanos(millis);
1203	>	long startTime = System.nanoTime();
1204	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1205	>	assertTrue(millisElapsedSince(startTime) >= millis);
1206		}
1207	<	});
1208	<	t.start();
1209	<	Thread.sleep(SHORT_DELAY_MS);
1207	>	assertFalse(l.isSignalled());
1208	>	}});
1209	>
1210	>	waitForQueuedThread(l, t);
1211	>	observedQueued.releaseShared(0);
1212	>	assertFalse(l.isSignalled());
1213	>	awaitTermination(t);
1214		assertFalse(l.isSignalled());
1128	–	t.join();
1215		}
1216
1217	+	/**
1218	+	* awaitNanos/timed await with 0 wait times out immediately
1219	+	*/
1220	+	public void testAwait_Zero() throws InterruptedException {
1221	+	final Mutex sync = new Mutex();
1222	+	final ConditionObject c = sync.newCondition();
1223	+	sync.acquire();
1224	+	assertTrue(c.awaitNanos(0L) <= 0);
1225	+	assertFalse(c.await(0L, NANOSECONDS));
1226	+	sync.release();
1227	+	}
1228	+
1229	+	/**
1230	+	* awaitNanos/timed await with maximum negative wait times does not underflow
1231	+	*/
1232	+	public void testAwait_NegativeInfinity() throws InterruptedException {
1233	+	final Mutex sync = new Mutex();
1234	+	final ConditionObject c = sync.newCondition();
1235	+	sync.acquire();
1236	+	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1237	+	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1238	+	sync.release();
1239	+	}
1240
1241		}

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