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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 1.49 by jsr166, Sun Feb 22 04:34:44 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	+	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		public class AbstractQueuedSynchronizerTest extends JSR166TestCase {
23		public static void main(String[] args) {
24	<	junit.textui.TestRunner.run (suite());
24	>	junit.textui.TestRunner.run(suite());
25		}
26		public static Test suite() {
27		return new TestSuite(AbstractQueuedSynchronizerTest.class);
28		}
29
30		/**
31	<	* A simple mutex class, adapted from the
32	<	* AbstractQueuedSynchronizer javadoc.  Exclusive acquire tests
33	<	* exercise this as a sample user extension.  Other
34	<	* methods/features of AbstractQueuedSynchronizerTest are tested
35	<	* via other test classes, including those for ReentrantLock,
30	<	* ReentrantReadWriteLock, and Semaphore
31	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
32	>	* acquire tests exercise this as a sample user extension.  Other
33	>	* methods/features of AbstractQueuedSynchronizer are tested via
34	>	* other test classes, including those for ReentrantLock,
35	>	* ReentrantReadWriteLock, and Semaphore.
36		*/
37		static class Mutex extends AbstractQueuedSynchronizer {
38	<	public boolean isHeldExclusively() { return getState() == 1; }
38	>	/** An eccentric value for locked synchronizer state. */
39	>	static final int LOCKED = (1 << 31) | (1 << 15);
40
41	<	public boolean tryAcquire(int acquires) {
42	<	assertTrue(acquires == 1);
43	<	return compareAndSetState(0, 1);
41	>	static final int UNLOCKED = 0;
42	>
43	>	@Override public boolean isHeldExclusively() {
44	>	int state = getState();
45	>	assertTrue(state == UNLOCKED || state == LOCKED);
46	>	return state == LOCKED;
47	>	}
48	>
49	>	@Override public boolean tryAcquire(int acquires) {
50	>	assertEquals(LOCKED, acquires);
51	>	return compareAndSetState(UNLOCKED, LOCKED);
52		}
53
54	<	public boolean tryRelease(int releases) {
55	<	if (getState() == 0) throw new IllegalMonitorStateException();
56	<	setState(0);
54	>	@Override public boolean tryRelease(int releases) {
55	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
56	>	assertEquals(LOCKED, releases);
57	>	setState(UNLOCKED);
58		return true;
59		}
60
61	<	public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); }
61	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
62	>	return tryAcquireNanos(LOCKED, nanos);
63	>	}
64
65	<	}
65	>	public boolean tryAcquire() {
66	>	return tryAcquire(LOCKED);
67	>	}
68	>
69	>	public boolean tryRelease() {
70	>	return tryRelease(LOCKED);
71	>	}
72	>
73	>	public void acquire() {
74	>	acquire(LOCKED);
75	>	}
76	>
77	>	public void acquireInterruptibly() throws InterruptedException {
78	>	acquireInterruptibly(LOCKED);
79	>	}
80	>
81	>	public void release() {
82	>	release(LOCKED);
83	>	}
84
85	+	public ConditionObject newCondition() {
86	+	return new ConditionObject();
87	+	}
88	+	}
89
90		/**
91		* A simple latch class, to test shared mode.
#	Line 55 | Line 94 | public class AbstractQueuedSynchronizerT
94		public boolean isSignalled() { return getState() != 0; }
95
96		public int tryAcquireShared(int ignore) {
97	<	return isSignalled()? 1 : -1;
97	>	return isSignalled() ? 1 : -1;
98		}
99
100		public boolean tryReleaseShared(int ignore) {
#	Line 65 | Line 104 | public class AbstractQueuedSynchronizerT
104		}
105
106		/**
107	<	* A runnable calling acquireInterruptibly
107	>	* A runnable calling acquireInterruptibly that does not expect to
108	>	* be interrupted.
109		*/
110	<	class InterruptibleSyncRunnable implements Runnable {
110	>	class InterruptibleSyncRunnable extends CheckedRunnable {
111		final Mutex sync;
112	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
113	<	public void run() {
114	<	try {
75	<	sync.acquireInterruptibly(1);
76	<	} catch (InterruptedException success) {}
112	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
113	>	public void realRun() throws InterruptedException {
114	>	sync.acquireInterruptibly();
115		}
116		}
117
80	–
118		/**
119		* A runnable calling acquireInterruptibly that expects to be
120	<	* interrupted
120	>	* interrupted.
121		*/
122	<	class InterruptedSyncRunnable implements Runnable {
122	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
123		final Mutex sync;
124	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
125	<	public void run() {
126	<	try {
127	<	sync.acquireInterruptibly(1);
128	<	threadShouldThrow();
129	<	} catch (InterruptedException success) {}
124	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
125	>	public void realRun() throws InterruptedException {
126	>	sync.acquireInterruptibly();
127	>	}
128	>	}
129	>
130	>	/** A constant to clarify calls to checking methods below. */
131	>	static final Thread[] NO_THREADS = new Thread[0];
132	>
133	>	/**
134	>	* Spin-waits until sync.isQueued(t) becomes true.
135	>	*/
136	>	void waitForQueuedThread(AbstractQueuedSynchronizer sync, Thread t) {
137	>	long startTime = System.nanoTime();
138	>	while (!sync.isQueued(t)) {
139	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
140	>	throw new AssertionFailedError("timed out");
141	>	Thread.yield();
142	>	}
143	>	assertTrue(t.isAlive());
144	>	}
145	>
146	>	/**
147	>	* Checks that sync has exactly the given queued threads.
148	>	*/
149	>	void assertHasQueuedThreads(AbstractQueuedSynchronizer sync,
150	>	Thread... expected) {
151	>	Collection<Thread> actual = sync.getQueuedThreads();
152	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
153	>	assertEquals(expected.length, sync.getQueueLength());
154	>	assertEquals(expected.length, actual.size());
155	>	assertEquals(expected.length == 0, actual.isEmpty());
156	>	assertEquals(new HashSet<Thread>(actual),
157	>	new HashSet<Thread>(Arrays.asList(expected)));
158	>	}
159	>
160	>	/**
161	>	* Checks that sync has exactly the given (exclusive) queued threads.
162	>	*/
163	>	void assertHasExclusiveQueuedThreads(AbstractQueuedSynchronizer sync,
164	>	Thread... expected) {
165	>	assertHasQueuedThreads(sync, expected);
166	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
167	>	new HashSet<Thread>(sync.getQueuedThreads()));
168	>	assertEquals(0, sync.getSharedQueuedThreads().size());
169	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
170	>	}
171	>
172	>	/**
173	>	* Checks that sync has exactly the given (shared) queued threads.
174	>	*/
175	>	void assertHasSharedQueuedThreads(AbstractQueuedSynchronizer sync,
176	>	Thread... expected) {
177	>	assertHasQueuedThreads(sync, expected);
178	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
179	>	new HashSet<Thread>(sync.getQueuedThreads()));
180	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
181	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
182	>	}
183	>
184	>	/**
185	>	* Checks that condition c has exactly the given waiter threads,
186	>	* after acquiring mutex.
187	>	*/
188	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
189	>	Thread... threads) {
190	>	sync.acquire();
191	>	assertHasWaitersLocked(sync, c, threads);
192	>	sync.release();
193	>	}
194	>
195	>	/**
196	>	* Checks that condition c has exactly the given waiter threads.
197	>	*/
198	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
199	>	Thread... threads) {
200	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
201	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
202	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
203	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
204	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
205	>	new HashSet<Thread>(Arrays.asList(threads)));
206	>	}
207	>
208	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
209	>
210	>	/**
211	>	* Awaits condition using the specified AwaitMethod.
212	>	*/
213	>	void await(ConditionObject c, AwaitMethod awaitMethod)
214	>	throws InterruptedException {
215	>	long timeoutMillis = 2 * LONG_DELAY_MS;
216	>	switch (awaitMethod) {
217	>	case await:
218	>	c.await();
219	>	break;
220	>	case awaitTimed:
221	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
222	>	break;
223	>	case awaitNanos:
224	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
225	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
226	>	assertTrue(nanosRemaining > 0);
227	>	break;
228	>	case awaitUntil:
229	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
230	>	break;
231	>	default:
232	>	throw new AssertionError();
233		}
234		}
235
236		/**
237	+	* Checks that awaiting the given condition times out (using the
238	+	* default timeout duration).
239	+	*/
240	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
241	+	long timeoutMillis = timeoutMillis();
242	+	long startTime = System.nanoTime();
243	+	try {
244	+	switch (awaitMethod) {
245	+	case awaitTimed:
246	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
247	+	break;
248	+	case awaitNanos:
249	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
250	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
251	+	assertTrue(nanosRemaining <= 0);
252	+	break;
253	+	case awaitUntil:
254	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
255	+	break;
256	+	default:
257	+	throw new UnsupportedOperationException();
258	+	}
259	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
260	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
261	+	}
262	+
263	+	/**
264		* isHeldExclusively is false upon construction
265		*/
266		public void testIsHeldExclusively() {
267	<	Mutex rl = new Mutex();
268	<	assertFalse(rl.isHeldExclusively());
267	>	Mutex sync = new Mutex();
268	>	assertFalse(sync.isHeldExclusively());
269		}
270
271		/**
272		* acquiring released sync succeeds
273		*/
274		public void testAcquire() {
275	<	Mutex rl = new Mutex();
276	<	rl.acquire(1);
277	<	assertTrue(rl.isHeldExclusively());
278	<	rl.release(1);
279	<	assertFalse(rl.isHeldExclusively());
275	>	Mutex sync = new Mutex();
276	>	sync.acquire();
277	>	assertTrue(sync.isHeldExclusively());
278	>	sync.release();
279	>	assertFalse(sync.isHeldExclusively());
280		}
281
282		/**
283	<	* tryAcquire on an released sync succeeds
283	>	* tryAcquire on a released sync succeeds
284		*/
285		public void testTryAcquire() {
286	<	Mutex rl = new Mutex();
287	<	assertTrue(rl.tryAcquire(1));
288	<	assertTrue(rl.isHeldExclusively());
289	<	rl.release(1);
286	>	Mutex sync = new Mutex();
287	>	assertTrue(sync.tryAcquire());
288	>	assertTrue(sync.isHeldExclusively());
289	>	sync.release();
290	>	assertFalse(sync.isHeldExclusively());
291		}
292
293		/**
294		* hasQueuedThreads reports whether there are waiting threads
295		*/
296	<	public void testhasQueuedThreads() throws InterruptedException {
297	<	final Mutex sync = new Mutex();
130	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
296	>	public void testHasQueuedThreads() {
297	>	final Mutex sync = new Mutex();
298		assertFalse(sync.hasQueuedThreads());
299	<	sync.acquire(1);
300	<	t1.start();
301	<	Thread.sleep(SHORT_DELAY_MS);
299	>	sync.acquire();
300	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
301	>	waitForQueuedThread(sync, t1);
302		assertTrue(sync.hasQueuedThreads());
303	<	t2.start();
304	<	Thread.sleep(SHORT_DELAY_MS);
303	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
304	>	waitForQueuedThread(sync, t2);
305		assertTrue(sync.hasQueuedThreads());
306		t1.interrupt();
307	<	Thread.sleep(SHORT_DELAY_MS);
307	>	awaitTermination(t1);
308		assertTrue(sync.hasQueuedThreads());
309	<	sync.release(1);
310	<	Thread.sleep(SHORT_DELAY_MS);
309	>	sync.release();
310	>	awaitTermination(t2);
311		assertFalse(sync.hasQueuedThreads());
146	–	t1.join();
147	–	t2.join();
312		}
313
314		/**
315	<	* isQueued(null) throws NPE
315	>	* isQueued(null) throws NullPointerException
316		*/
317		public void testIsQueuedNPE() {
318	<	final Mutex sync = new Mutex();
318	>	final Mutex sync = new Mutex();
319		try {
320		sync.isQueued(null);
321		shouldThrow();
#	Line 159 | Line 323 | public class AbstractQueuedSynchronizerT
323		}
324
325		/**
326	<	* isQueued reports whether a thread is queued.
326	>	* isQueued reports whether a thread is queued
327		*/
328	<	public void testIsQueued() throws InterruptedException {
329	<	final Mutex sync = new Mutex();
328	>	public void testIsQueued() {
329	>	final Mutex sync = new Mutex();
330		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
331		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
332		assertFalse(sync.isQueued(t1));
333		assertFalse(sync.isQueued(t2));
334	<	sync.acquire(1);
334	>	sync.acquire();
335		t1.start();
336	<	Thread.sleep(SHORT_DELAY_MS);
336	>	waitForQueuedThread(sync, t1);
337		assertTrue(sync.isQueued(t1));
338	+	assertFalse(sync.isQueued(t2));
339		t2.start();
340	<	Thread.sleep(SHORT_DELAY_MS);
340	>	waitForQueuedThread(sync, t2);
341		assertTrue(sync.isQueued(t1));
342		assertTrue(sync.isQueued(t2));
343		t1.interrupt();
344	<	Thread.sleep(SHORT_DELAY_MS);
344	>	awaitTermination(t1);
345		assertFalse(sync.isQueued(t1));
346		assertTrue(sync.isQueued(t2));
347	<	sync.release(1);
348	<	Thread.sleep(SHORT_DELAY_MS);
347	>	sync.release();
348	>	awaitTermination(t2);
349		assertFalse(sync.isQueued(t1));
185	–	Thread.sleep(SHORT_DELAY_MS);
350		assertFalse(sync.isQueued(t2));
187	–	t1.join();
188	–	t2.join();
351		}
352
353		/**
354		* getFirstQueuedThread returns first waiting thread or null if none
355		*/
356	<	public void testGetFirstQueuedThread() throws InterruptedException {
357	<	final Mutex sync = new Mutex();
196	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
356	>	public void testGetFirstQueuedThread() {
357	>	final Mutex sync = new Mutex();
358		assertNull(sync.getFirstQueuedThread());
359	<	sync.acquire(1);
360	<	t1.start();
361	<	Thread.sleep(SHORT_DELAY_MS);
359	>	sync.acquire();
360	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
361	>	waitForQueuedThread(sync, t1);
362		assertEquals(t1, sync.getFirstQueuedThread());
363	<	t2.start();
364	<	Thread.sleep(SHORT_DELAY_MS);
363	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
364	>	waitForQueuedThread(sync, t2);
365		assertEquals(t1, sync.getFirstQueuedThread());
366		t1.interrupt();
367	<	Thread.sleep(SHORT_DELAY_MS);
208	<	Thread.sleep(SHORT_DELAY_MS);
367	>	awaitTermination(t1);
368		assertEquals(t2, sync.getFirstQueuedThread());
369	<	sync.release(1);
370	<	Thread.sleep(SHORT_DELAY_MS);
369	>	sync.release();
370	>	awaitTermination(t2);
371		assertNull(sync.getFirstQueuedThread());
213	–	t1.join();
214	–	t2.join();
372		}
373
217	–
374		/**
375		* hasContended reports false if no thread has ever blocked, else true
376		*/
377	<	public void testHasContended() throws InterruptedException {
378	<	final Mutex sync = new Mutex();
223	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
377	>	public void testHasContended() {
378	>	final Mutex sync = new Mutex();
379		assertFalse(sync.hasContended());
380	<	sync.acquire(1);
381	<	t1.start();
382	<	Thread.sleep(SHORT_DELAY_MS);
380	>	sync.acquire();
381	>	assertFalse(sync.hasContended());
382	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
383	>	waitForQueuedThread(sync, t1);
384		assertTrue(sync.hasContended());
385	<	t2.start();
386	<	Thread.sleep(SHORT_DELAY_MS);
385	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
386	>	waitForQueuedThread(sync, t2);
387		assertTrue(sync.hasContended());
388		t1.interrupt();
389	<	Thread.sleep(SHORT_DELAY_MS);
389	>	awaitTermination(t1);
390		assertTrue(sync.hasContended());
391	<	sync.release(1);
392	<	Thread.sleep(SHORT_DELAY_MS);
391	>	sync.release();
392	>	awaitTermination(t2);
393		assertTrue(sync.hasContended());
239	–	t1.join();
240	–	t2.join();
394		}
395
396		/**
397	<	* getQueuedThreads includes waiting threads
397	>	* getQueuedThreads returns all waiting threads
398		*/
399	<	public void testGetQueuedThreads() throws InterruptedException {
400	<	final Mutex sync = new Mutex();
399	>	public void testGetQueuedThreads() {
400	>	final Mutex sync = new Mutex();
401		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
402		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
403	<	assertTrue(sync.getQueuedThreads().isEmpty());
404	<	sync.acquire(1);
405	<	assertTrue(sync.getQueuedThreads().isEmpty());
403	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
404	>	sync.acquire();
405	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
406		t1.start();
407	<	Thread.sleep(SHORT_DELAY_MS);
407	>	waitForQueuedThread(sync, t1);
408	>	assertHasExclusiveQueuedThreads(sync, t1);
409		assertTrue(sync.getQueuedThreads().contains(t1));
410	+	assertFalse(sync.getQueuedThreads().contains(t2));
411		t2.start();
412	<	Thread.sleep(SHORT_DELAY_MS);
412	>	waitForQueuedThread(sync, t2);
413	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
414		assertTrue(sync.getQueuedThreads().contains(t1));
415		assertTrue(sync.getQueuedThreads().contains(t2));
416		t1.interrupt();
417	<	Thread.sleep(SHORT_DELAY_MS);
418	<	assertFalse(sync.getQueuedThreads().contains(t1));
419	<	assertTrue(sync.getQueuedThreads().contains(t2));
420	<	sync.release(1);
421	<	Thread.sleep(SHORT_DELAY_MS);
266	<	assertTrue(sync.getQueuedThreads().isEmpty());
267	<	t1.join();
268	<	t2.join();
417	>	awaitTermination(t1);
418	>	assertHasExclusiveQueuedThreads(sync, t2);
419	>	sync.release();
420	>	awaitTermination(t2);
421	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
422		}
423
424		/**
425	<	* getExclusiveQueuedThreads includes waiting threads
425	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
426		*/
427	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
428	<	final Mutex sync = new Mutex();
427	>	public void testGetExclusiveQueuedThreads() {
428	>	final Mutex sync = new Mutex();
429		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
430		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
431	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
432	<	sync.acquire(1);
433	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
431	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
432	>	sync.acquire();
433	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
434		t1.start();
435	<	Thread.sleep(SHORT_DELAY_MS);
435	>	waitForQueuedThread(sync, t1);
436	>	assertHasExclusiveQueuedThreads(sync, t1);
437		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
438	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
439		t2.start();
440	<	Thread.sleep(SHORT_DELAY_MS);
440	>	waitForQueuedThread(sync, t2);
441	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
442		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
443		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
444		t1.interrupt();
445	<	Thread.sleep(SHORT_DELAY_MS);
446	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
447	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
448	<	sync.release(1);
449	<	Thread.sleep(SHORT_DELAY_MS);
294	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	<	t1.join();
296	<	t2.join();
445	>	awaitTermination(t1);
446	>	assertHasExclusiveQueuedThreads(sync, t2);
447	>	sync.release();
448	>	awaitTermination(t2);
449	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
450		}
451
452		/**
453		* getSharedQueuedThreads does not include exclusively waiting threads
454		*/
455	<	public void testGetSharedQueuedThreads() throws InterruptedException {
456	<	final Mutex sync = new Mutex();
304	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
455	>	public void testGetSharedQueuedThreads_Exclusive() {
456	>	final Mutex sync = new Mutex();
457		assertTrue(sync.getSharedQueuedThreads().isEmpty());
458	<	sync.acquire(1);
458	>	sync.acquire();
459		assertTrue(sync.getSharedQueuedThreads().isEmpty());
460	<	t1.start();
461	<	Thread.sleep(SHORT_DELAY_MS);
460	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
461	>	waitForQueuedThread(sync, t1);
462		assertTrue(sync.getSharedQueuedThreads().isEmpty());
463	<	t2.start();
464	<	Thread.sleep(SHORT_DELAY_MS);
463	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
464	>	waitForQueuedThread(sync, t2);
465		assertTrue(sync.getSharedQueuedThreads().isEmpty());
466		t1.interrupt();
467	<	Thread.sleep(SHORT_DELAY_MS);
467	>	awaitTermination(t1);
468		assertTrue(sync.getSharedQueuedThreads().isEmpty());
469	<	sync.release(1);
470	<	Thread.sleep(SHORT_DELAY_MS);
469	>	sync.release();
470	>	awaitTermination(t2);
471		assertTrue(sync.getSharedQueuedThreads().isEmpty());
321	–	t1.join();
322	–	t2.join();
472		}
473
474		/**
475	<	* tryAcquireNanos is interruptible.
475	>	* getSharedQueuedThreads returns all shared waiting threads
476	>	*/
477	>	public void testGetSharedQueuedThreads_Shared() {
478	>	final BooleanLatch l = new BooleanLatch();
479	>	assertHasSharedQueuedThreads(l, NO_THREADS);
480	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
481	>	public void realRun() throws InterruptedException {
482	>	l.acquireSharedInterruptibly(0);
483	>	}});
484	>	waitForQueuedThread(l, t1);
485	>	assertHasSharedQueuedThreads(l, t1);
486	>	Thread t2 = newStartedThread(new CheckedRunnable() {
487	>	public void realRun() throws InterruptedException {
488	>	l.acquireSharedInterruptibly(0);
489	>	}});
490	>	waitForQueuedThread(l, t2);
491	>	assertHasSharedQueuedThreads(l, t1, t2);
492	>	t1.interrupt();
493	>	awaitTermination(t1);
494	>	assertHasSharedQueuedThreads(l, t2);
495	>	assertTrue(l.releaseShared(0));
496	>	awaitTermination(t2);
497	>	assertHasSharedQueuedThreads(l, NO_THREADS);
498	>	}
499	>
500	>	/**
501	>	* tryAcquireNanos is interruptible
502		*/
503	<	public void testInterruptedException2() throws InterruptedException {
504	<	final Mutex sync = new Mutex();
505	<	sync.acquire(1);
506	<	Thread t = new Thread(new Runnable() {
507	<	public void run() {
508	<	try {
509	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
335	<	threadShouldThrow();
336	<	} catch (InterruptedException success) {}
337	<	}
338	<	});
503	>	public void testTryAcquireNanos_Interruptible() {
504	>	final Mutex sync = new Mutex();
505	>	sync.acquire();
506	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
507	>	public void realRun() throws InterruptedException {
508	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
509	>	}});
510
511	<	t.start();
511	>	waitForQueuedThread(sync, t);
512		t.interrupt();
513	<	t.join();
513	>	awaitTermination(t);
514		}
515
345	–
516		/**
517	<	* TryAcquire on exclusively held sync fails
517	>	* tryAcquire on exclusively held sync fails
518		*/
519	<	public void testTryAcquireWhenSynced() throws InterruptedException {
520	<	final Mutex sync = new Mutex();
521	<	sync.acquire(1);
522	<	Thread t = new Thread(new Runnable() {
523	<	public void run() {
524	<	threadAssertFalse(sync.tryAcquire(1));
525	<	}
356	<	});
519	>	public void testTryAcquireWhenSynced() {
520	>	final Mutex sync = new Mutex();
521	>	sync.acquire();
522	>	Thread t = newStartedThread(new CheckedRunnable() {
523	>	public void realRun() {
524	>	assertFalse(sync.tryAcquire());
525	>	}});
526
527	<	t.start();
528	<	t.join();
360	<	sync.release(1);
527	>	awaitTermination(t);
528	>	sync.release();
529		}
530
531		/**
532		* tryAcquireNanos on an exclusively held sync times out
533		*/
534	<	public void testAcquireNanos_Timeout() throws InterruptedException {
535	<	final Mutex sync = new Mutex();
536	<	sync.acquire(1);
537	<	Thread t = new Thread(new Runnable() {
538	<	public void run() {
539	<	try {
540	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
541	<	} catch (Exception ex) {
542	<	threadUnexpectedException();
543	<	}
376	<	}
377	<	});
378	<
379	<	t.start();
380	<	t.join();
381	<	sync.release(1);
382	<	}
534	>	public void testAcquireNanos_Timeout() {
535	>	final Mutex sync = new Mutex();
536	>	sync.acquire();
537	>	Thread t = newStartedThread(new CheckedRunnable() {
538	>	public void realRun() throws InterruptedException {
539	>	long startTime = System.nanoTime();
540	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
541	>	assertFalse(sync.tryAcquireNanos(nanos));
542	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
543	>	}});
544
545	+	awaitTermination(t);
546	+	sync.release();
547	+	}
548
549		/**
550		* getState is true when acquired and false when not
551		*/
552	<	public void testGetState() throws InterruptedException {
553	<	final Mutex sync = new Mutex();
554	<	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);
552	>	public void testGetState() {
553	>	final Mutex sync = new Mutex();
554	>	sync.acquire();
555		assertTrue(sync.isHeldExclusively());
556	<	t.join();
556	>	sync.release();
557		assertFalse(sync.isHeldExclusively());
412	–	}
558
559	+	final BooleanLatch acquired = new BooleanLatch();
560	+	final BooleanLatch done = new BooleanLatch();
561	+	Thread t = newStartedThread(new CheckedRunnable() {
562	+	public void realRun() throws InterruptedException {
563	+	sync.acquire();
564	+	assertTrue(acquired.releaseShared(0));
565	+	done.acquireShared(0);
566	+	sync.release();
567	+	}});
568
569	<	/**
570	<	* acquireInterruptibly is interruptible.
571	<	*/
572	<	public void testAcquireInterruptibly1() throws InterruptedException {
573	<	final Mutex sync = new Mutex();
420	<	sync.acquire(1);
421	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
422	<
423	<	t.start();
424	<	Thread.sleep(SHORT_DELAY_MS);
425	<	t.interrupt();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	sync.release(1);
428	<	t.join();
569	>	acquired.acquireShared(0);
570	>	assertTrue(sync.isHeldExclusively());
571	>	assertTrue(done.releaseShared(0));
572	>	awaitTermination(t);
573	>	assertFalse(sync.isHeldExclusively());
574		}
575
576		/**
577		* acquireInterruptibly succeeds when released, else is interruptible
578		*/
579	<	public void testAcquireInterruptibly2() throws InterruptedException {
580	<	final Mutex sync = new Mutex();
581	<	sync.acquireInterruptibly(1);
582	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
583	<	t.start();
579	>	public void testAcquireInterruptibly() throws InterruptedException {
580	>	final Mutex sync = new Mutex();
581	>	final BooleanLatch threadStarted = new BooleanLatch();
582	>	sync.acquireInterruptibly();
583	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
584	>	public void realRun() throws InterruptedException {
585	>	assertTrue(threadStarted.releaseShared(0));
586	>	sync.acquireInterruptibly();
587	>	}});
588	>
589	>	threadStarted.acquireShared(0);
590	>	waitForQueuedThread(sync, t);
591		t.interrupt();
592	+	awaitTermination(t);
593		assertTrue(sync.isHeldExclusively());
441	–	t.join();
594		}
595
596		/**
597		* owns is true for a condition created by sync else false
598		*/
599		public void testOwns() {
600	<	final Mutex sync = new Mutex();
601	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
600	>	final Mutex sync = new Mutex();
601	>	final ConditionObject c = sync.newCondition();
602		final Mutex sync2 = new Mutex();
603		assertTrue(sync.owns(c));
604		assertFalse(sync2.owns(c));
#	Line 455 | Line 607 | public class AbstractQueuedSynchronizerT
607		/**
608		* Calling await without holding sync throws IllegalMonitorStateException
609		*/
610	<	public void testAwait_IllegalMonitor() throws InterruptedException {
611	<	final Mutex sync = new Mutex();
612	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
613	<	try {
614	<	c.await();
615	<	shouldThrow();
610	>	public void testAwait_IMSE() {
611	>	final Mutex sync = new Mutex();
612	>	final ConditionObject c = sync.newCondition();
613	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
614	>	long startTime = System.nanoTime();
615	>	try {
616	>	await(c, awaitMethod);
617	>	shouldThrow();
618	>	} catch (IllegalMonitorStateException success) {
619	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
620	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
621		}
465	–	catch (IllegalMonitorStateException success) {}
622		}
623
624		/**
625		* Calling signal without holding sync throws IllegalMonitorStateException
626		*/
627	<	public void testSignal_IllegalMonitor() {
628	<	final Mutex sync = new Mutex();
629	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
627	>	public void testSignal_IMSE() {
628	>	final Mutex sync = new Mutex();
629	>	final ConditionObject c = sync.newCondition();
630		try {
631		c.signal();
632		shouldThrow();
633	<	}
634	<	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);
633	>	} catch (IllegalMonitorStateException success) {}
634	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
635		}
636
637		/**
638	<	*  Timed await without a signal times out
638	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
639		*/
640	<	public void testAwait_Timeout() throws InterruptedException {
641	<	final Mutex sync = new Mutex();
642	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
643	<	sync.acquire(1);
644	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
645	<	sync.release(1);
640	>	public void testSignalAll_IMSE() {
641	>	final Mutex sync = new Mutex();
642	>	final ConditionObject c = sync.newCondition();
643	>	try {
644	>	c.signalAll();
645	>	shouldThrow();
646	>	} catch (IllegalMonitorStateException success) {}
647		}
648
649		/**
650	<	* awaitUntil without a signal times out
650	>	* await/awaitNanos/awaitUntil without a signal times out
651		*/
652	<	public void testAwaitUntil_Timeout() throws InterruptedException {
653	<	final Mutex sync = new Mutex();
654	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
655	<	sync.acquire(1);
656	<	java.util.Date d = new java.util.Date();
657	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
658	<	sync.release(1);
652	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
653	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
654	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
655	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
656	>	final Mutex sync = new Mutex();
657	>	final ConditionObject c = sync.newCondition();
658	>	sync.acquire();
659	>	assertAwaitTimesOut(c, awaitMethod);
660	>	sync.release();
661		}
662
663		/**
664	<	* await returns when signalled
665	<	*/
666	<	public void testAwait() throws InterruptedException {
667	<	final Mutex sync = new Mutex();
668	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
669	<	Thread t = new Thread(new Runnable() {
670	<	public void run() {
671	<	try {
672	<	sync.acquire(1);
673	<	c.await();
674	<	sync.release(1);
675	<	}
676	<	catch (InterruptedException e) {
677	<	threadUnexpectedException();
678	<	}
679	<	}
680	<	});
681	<
682	<	t.start();
683	<	Thread.sleep(SHORT_DELAY_MS);
684	<	sync.acquire(1);
664	>	* await/awaitNanos/awaitUntil returns when signalled
665	>	*/
666	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
667	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
668	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
669	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
670	>	public void testSignal(final AwaitMethod awaitMethod) {
671	>	final Mutex sync = new Mutex();
672	>	final ConditionObject c = sync.newCondition();
673	>	final BooleanLatch acquired = new BooleanLatch();
674	>	Thread t = newStartedThread(new CheckedRunnable() {
675	>	public void realRun() throws InterruptedException {
676	>	sync.acquire();
677	>	assertTrue(acquired.releaseShared(0));
678	>	await(c, awaitMethod);
679	>	sync.release();
680	>	}});
681	>
682	>	acquired.acquireShared(0);
683	>	sync.acquire();
684	>	assertHasWaitersLocked(sync, c, t);
685	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
686		c.signal();
687	<	sync.release(1);
688	<	t.join(SHORT_DELAY_MS);
689	<	assertFalse(t.isAlive());
687	>	assertHasWaitersLocked(sync, c, NO_THREADS);
688	>	assertHasExclusiveQueuedThreads(sync, t);
689	>	sync.release();
690	>	awaitTermination(t);
691		}
692
544	–
545	–
693		/**
694	<	* hasWaiters throws NPE if null
694	>	* hasWaiters(null) throws NullPointerException
695		*/
696		public void testHasWaitersNPE() {
697	<	final Mutex sync = new Mutex();
697	>	final Mutex sync = new Mutex();
698		try {
699		sync.hasWaiters(null);
700		shouldThrow();
#	Line 555 | Line 702 | public class AbstractQueuedSynchronizerT
702		}
703
704		/**
705	<	* getWaitQueueLength throws NPE if null
705	>	* getWaitQueueLength(null) throws NullPointerException
706		*/
707		public void testGetWaitQueueLengthNPE() {
708	<	final Mutex sync = new Mutex();
708	>	final Mutex sync = new Mutex();
709		try {
710		sync.getWaitQueueLength(null);
711		shouldThrow();
712		} catch (NullPointerException success) {}
713		}
714
568	–
715		/**
716	<	* getWaitingThreads throws NPE if null
716	>	* getWaitingThreads(null) throws NullPointerException
717		*/
718		public void testGetWaitingThreadsNPE() {
719	<	final Mutex sync = new Mutex();
719	>	final Mutex sync = new Mutex();
720		try {
721		sync.getWaitingThreads(null);
722		shouldThrow();
723		} catch (NullPointerException success) {}
724		}
725
580	–
726		/**
727	<	* hasWaiters throws IAE if not owned
727	>	* hasWaiters throws IllegalArgumentException if not owned
728		*/
729		public void testHasWaitersIAE() {
730	<	final Mutex sync = new Mutex();
731	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
732	<	final Mutex sync2 = new Mutex();
730	>	final Mutex sync = new Mutex();
731	>	final ConditionObject c = sync.newCondition();
732	>	final Mutex sync2 = new Mutex();
733		try {
734		sync2.hasWaiters(c);
735		shouldThrow();
736		} catch (IllegalArgumentException success) {}
737	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
738		}
739
740		/**
741	<	* hasWaiters throws IMSE if not synced
741	>	* hasWaiters throws IllegalMonitorStateException if not synced
742		*/
743		public void testHasWaitersIMSE() {
744	<	final Mutex sync = new Mutex();
745	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
744	>	final Mutex sync = new Mutex();
745	>	final ConditionObject c = sync.newCondition();
746		try {
747		sync.hasWaiters(c);
748		shouldThrow();
749		} catch (IllegalMonitorStateException success) {}
750	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
751		}
752
606	–
753		/**
754	<	* getWaitQueueLength throws IAE if not owned
754	>	* getWaitQueueLength throws IllegalArgumentException if not owned
755		*/
756		public void testGetWaitQueueLengthIAE() {
757	<	final Mutex sync = new Mutex();
758	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
759	<	final Mutex sync2 = new Mutex();
757	>	final Mutex sync = new Mutex();
758	>	final ConditionObject c = sync.newCondition();
759	>	final Mutex sync2 = new Mutex();
760		try {
761		sync2.getWaitQueueLength(c);
762		shouldThrow();
763		} catch (IllegalArgumentException success) {}
764	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
765		}
766
767		/**
768	<	* getWaitQueueLength throws IMSE if not synced
768	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
769		*/
770		public void testGetWaitQueueLengthIMSE() {
771	<	final Mutex sync = new Mutex();
772	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
771	>	final Mutex sync = new Mutex();
772	>	final ConditionObject c = sync.newCondition();
773		try {
774		sync.getWaitQueueLength(c);
775		shouldThrow();
776		} catch (IllegalMonitorStateException success) {}
777	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
778		}
779
632	–
780		/**
781	<	* getWaitingThreads throws IAE if not owned
781	>	* getWaitingThreads throws IllegalArgumentException if not owned
782		*/
783		public void testGetWaitingThreadsIAE() {
784	<	final Mutex sync = new Mutex();
785	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
786	<	final Mutex sync2 = new Mutex();
784	>	final Mutex sync = new Mutex();
785	>	final ConditionObject c = sync.newCondition();
786	>	final Mutex sync2 = new Mutex();
787		try {
788		sync2.getWaitingThreads(c);
789		shouldThrow();
790		} catch (IllegalArgumentException success) {}
791	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
792		}
793
794		/**
795	<	* getWaitingThreads throws IMSE if not synced
795	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
796		*/
797		public void testGetWaitingThreadsIMSE() {
798	<	final Mutex sync = new Mutex();
799	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
798	>	final Mutex sync = new Mutex();
799	>	final ConditionObject c = sync.newCondition();
800		try {
801		sync.getWaitingThreads(c);
802		shouldThrow();
803		} catch (IllegalMonitorStateException success) {}
804	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
805		}
806
658	–
659	–
807		/**
808		* hasWaiters returns true when a thread is waiting, else false
809		*/
810	<	public void testHasWaiters() throws InterruptedException {
811	<	final Mutex sync = new Mutex();
812	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
813	<	Thread t = new Thread(new Runnable() {
814	<	public void run() {
815	<	try {
816	<	sync.acquire(1);
817	<	threadAssertFalse(sync.hasWaiters(c));
818	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
819	<	c.await();
820	<	sync.release(1);
821	<	}
822	<	catch (InterruptedException e) {
823	<	threadUnexpectedException();
824	<	}
825	<	}
826	<	});
827	<
681	<	t.start();
682	<	Thread.sleep(SHORT_DELAY_MS);
683	<	sync.acquire(1);
810	>	public void testHasWaiters() {
811	>	final Mutex sync = new Mutex();
812	>	final ConditionObject c = sync.newCondition();
813	>	final BooleanLatch acquired = new BooleanLatch();
814	>	Thread t = newStartedThread(new CheckedRunnable() {
815	>	public void realRun() throws InterruptedException {
816	>	sync.acquire();
817	>	assertHasWaitersLocked(sync, c, NO_THREADS);
818	>	assertFalse(sync.hasWaiters(c));
819	>	assertTrue(acquired.releaseShared(0));
820	>	c.await();
821	>	sync.release();
822	>	}});
823	>
824	>	acquired.acquireShared(0);
825	>	sync.acquire();
826	>	assertHasWaitersLocked(sync, c, t);
827	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
828		assertTrue(sync.hasWaiters(c));
685	–	assertEquals(1, sync.getWaitQueueLength(c));
829		c.signal();
830	<	sync.release(1);
831	<	Thread.sleep(SHORT_DELAY_MS);
689	<	sync.acquire(1);
830	>	assertHasWaitersLocked(sync, c, NO_THREADS);
831	>	assertHasExclusiveQueuedThreads(sync, t);
832		assertFalse(sync.hasWaiters(c));
833	<	assertEquals(0, sync.getWaitQueueLength(c));
834	<	sync.release(1);
835	<	t.join(SHORT_DELAY_MS);
836	<	assertFalse(t.isAlive());
833	>	sync.release();
834	>
835	>	awaitTermination(t);
836	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
837		}
838
839		/**
840		* getWaitQueueLength returns number of waiting threads
841		*/
842	<	public void testGetWaitQueueLength() throws InterruptedException {
843	<	final Mutex sync = new Mutex();
844	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
845	<	Thread t1 = new Thread(new Runnable() {
846	<	public void run() {
847	<	try {
848	<	sync.acquire(1);
849	<	threadAssertFalse(sync.hasWaiters(c));
850	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
851	<	c.await();
852	<	sync.release(1);
853	<	}
854	<	catch (InterruptedException e) {
855	<	threadUnexpectedException();
856	<	}
857	<	}
858	<	});
859	<
860	<	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	<	});
842	>	public void testGetWaitQueueLength() {
843	>	final Mutex sync = new Mutex();
844	>	final ConditionObject c = sync.newCondition();
845	>	final BooleanLatch acquired1 = new BooleanLatch();
846	>	final BooleanLatch acquired2 = new BooleanLatch();
847	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
848	>	public void realRun() throws InterruptedException {
849	>	sync.acquire();
850	>	assertHasWaitersLocked(sync, c, NO_THREADS);
851	>	assertEquals(0, sync.getWaitQueueLength(c));
852	>	assertTrue(acquired1.releaseShared(0));
853	>	c.await();
854	>	sync.release();
855	>	}});
856	>	acquired1.acquireShared(0);
857	>	sync.acquire();
858	>	assertHasWaitersLocked(sync, c, t1);
859	>	assertEquals(1, sync.getWaitQueueLength(c));
860	>	sync.release();
861
862	<	t1.start();
863	<	Thread.sleep(SHORT_DELAY_MS);
864	<	t2.start();
865	<	Thread.sleep(SHORT_DELAY_MS);
866	<	sync.acquire(1);
867	<	assertTrue(sync.hasWaiters(c));
862	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
863	>	public void realRun() throws InterruptedException {
864	>	sync.acquire();
865	>	assertHasWaitersLocked(sync, c, t1);
866	>	assertEquals(1, sync.getWaitQueueLength(c));
867	>	assertTrue(acquired2.releaseShared(0));
868	>	c.await();
869	>	sync.release();
870	>	}});
871	>	acquired2.acquireShared(0);
872	>	sync.acquire();
873	>	assertHasWaitersLocked(sync, c, t1, t2);
874	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
875		assertEquals(2, sync.getWaitQueueLength(c));
876		c.signalAll();
877	<	sync.release(1);
878	<	Thread.sleep(SHORT_DELAY_MS);
743	<	sync.acquire(1);
744	<	assertFalse(sync.hasWaiters(c));
877	>	assertHasWaitersLocked(sync, c, NO_THREADS);
878	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
879		assertEquals(0, sync.getWaitQueueLength(c));
880	<	sync.release(1);
881	<	t1.join(SHORT_DELAY_MS);
882	<	t2.join(SHORT_DELAY_MS);
883	<	assertFalse(t1.isAlive());
884	<	assertFalse(t2.isAlive());
880	>	sync.release();
881	>
882	>	awaitTermination(t1);
883	>	awaitTermination(t2);
884	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
885		}
886
887		/**
888		* getWaitingThreads returns only and all waiting threads
889		*/
890	<	public void testGetWaitingThreads() throws InterruptedException {
891	<	final Mutex sync = new Mutex();
892	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
893	<	Thread t1 = new Thread(new Runnable() {
894	<	public void run() {
895	<	try {
896	<	sync.acquire(1);
897	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
898	<	c.await();
899	<	sync.release(1);
900	<	}
901	<	catch (InterruptedException e) {
902	<	threadUnexpectedException();
903	<	}
904	<	}
905	<	});
906	<
907	<	Thread t2 = new Thread(new Runnable() {
908	<	public void run() {
909	<	try {
910	<	sync.acquire(1);
911	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
912	<	c.await();
913	<	sync.release(1);
914	<	}
915	<	catch (InterruptedException e) {
916	<	threadUnexpectedException();
917	<	}
918	<	}
919	<	});
920	<
787	<	sync.acquire(1);
890	>	public void testGetWaitingThreads() {
891	>	final Mutex sync = new Mutex();
892	>	final ConditionObject c = sync.newCondition();
893	>	final BooleanLatch acquired1 = new BooleanLatch();
894	>	final BooleanLatch acquired2 = new BooleanLatch();
895	>	final Thread t1 = new Thread(new CheckedRunnable() {
896	>	public void realRun() throws InterruptedException {
897	>	sync.acquire();
898	>	assertHasWaitersLocked(sync, c, NO_THREADS);
899	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
900	>	assertTrue(acquired1.releaseShared(0));
901	>	c.await();
902	>	sync.release();
903	>	}});
904	>
905	>	final Thread t2 = new Thread(new CheckedRunnable() {
906	>	public void realRun() throws InterruptedException {
907	>	sync.acquire();
908	>	assertHasWaitersLocked(sync, c, t1);
909	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
910	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
911	>	assertEquals(1, sync.getWaitingThreads(c).size());
912	>	assertTrue(acquired2.releaseShared(0));
913	>	c.await();
914	>	sync.release();
915	>	}});
916	>
917	>	sync.acquire();
918	>	assertHasWaitersLocked(sync, c, NO_THREADS);
919	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
920	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
921		assertTrue(sync.getWaitingThreads(c).isEmpty());
922	<	sync.release(1);
922	>	assertEquals(0, sync.getWaitingThreads(c).size());
923	>	sync.release();
924	>
925		t1.start();
926	<	Thread.sleep(SHORT_DELAY_MS);
926	>	acquired1.acquireShared(0);
927	>	sync.acquire();
928	>	assertHasWaitersLocked(sync, c, t1);
929	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
930	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
931	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
932	>	assertEquals(1, sync.getWaitingThreads(c).size());
933	>	sync.release();
934	>
935		t2.start();
936	<	Thread.sleep(SHORT_DELAY_MS);
937	<	sync.acquire(1);
938	<	assertTrue(sync.hasWaiters(c));
936	>	acquired2.acquireShared(0);
937	>	sync.acquire();
938	>	assertHasWaitersLocked(sync, c, t1, t2);
939	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
940		assertTrue(sync.getWaitingThreads(c).contains(t1));
941		assertTrue(sync.getWaitingThreads(c).contains(t2));
942	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
943	+	assertEquals(2, sync.getWaitingThreads(c).size());
944		c.signalAll();
945	<	sync.release(1);
946	<	Thread.sleep(SHORT_DELAY_MS);
947	<	sync.acquire(1);
948	<	assertFalse(sync.hasWaiters(c));
945	>	assertHasWaitersLocked(sync, c, NO_THREADS);
946	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
947	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
948	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
949		assertTrue(sync.getWaitingThreads(c).isEmpty());
950	<	sync.release(1);
951	<	t1.join(SHORT_DELAY_MS);
806	<	t2.join(SHORT_DELAY_MS);
807	<	assertFalse(t1.isAlive());
808	<	assertFalse(t2.isAlive());
809	<	}
810	<
811	<
950	>	assertEquals(0, sync.getWaitingThreads(c).size());
951	>	sync.release();
952
953	<	/**
954	<	* awaitUninterruptibly doesn't abort on interrupt
955	<	*/
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());
953	>	awaitTermination(t1);
954	>	awaitTermination(t2);
955	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
956		}
957
958		/**
959	<	* await is interruptible
960	<	*/
961	<	public void testAwait_Interrupt() throws InterruptedException {
962	<	final Mutex sync = new Mutex();
963	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
964	<	Thread t = new Thread(new Runnable() {
965	<	public void run() {
966	<	try {
967	<	sync.acquire(1);
968	<	c.await();
969	<	sync.release(1);
970	<	threadShouldThrow();
971	<	}
972	<	catch (InterruptedException success) {
973	<	}
974	<	}
975	<	});
976	<
977	<	t.start();
978	<	Thread.sleep(SHORT_DELAY_MS);
959	>	* awaitUninterruptibly is uninterruptible
960	>	*/
961	>	public void testAwaitUninterruptibly() {
962	>	final Mutex sync = new Mutex();
963	>	final ConditionObject c = sync.newCondition();
964	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
965	>	Thread t = newStartedThread(new CheckedRunnable() {
966	>	public void realRun() {
967	>	sync.acquire();
968	>	assertTrue(pleaseInterrupt.releaseShared(0));
969	>	c.awaitUninterruptibly();
970	>	assertTrue(Thread.interrupted());
971	>	assertHasWaitersLocked(sync, c, NO_THREADS);
972	>	sync.release();
973	>	}});
974	>
975	>	pleaseInterrupt.acquireShared(0);
976	>	sync.acquire();
977	>	assertHasWaitersLocked(sync, c, t);
978	>	sync.release();
979		t.interrupt();
980	<	t.join(SHORT_DELAY_MS);
981	<	assertFalse(t.isAlive());
980	>	assertHasWaitersUnlocked(sync, c, t);
981	>	assertThreadStaysAlive(t);
982	>	sync.acquire();
983	>	assertHasWaitersLocked(sync, c, t);
984	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
985	>	c.signal();
986	>	assertHasWaitersLocked(sync, c, NO_THREADS);
987	>	assertHasExclusiveQueuedThreads(sync, t);
988	>	sync.release();
989	>	awaitTermination(t);
990		}
991
992		/**
993	<	* awaitNanos is interruptible
994	<	*/
995	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
996	<	final Mutex sync = new Mutex();
997	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
998	<	Thread t = new Thread(new Runnable() {
999	<	public void run() {
1000	<	try {
1001	<	sync.acquire(1);
1002	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
1003	<	sync.release(1);
1004	<	threadShouldThrow();
1005	<	}
1006	<	catch (InterruptedException success) {
1007	<	}
1008	<	}
880	<	});
993	>	* await/awaitNanos/awaitUntil is interruptible
994	>	*/
995	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
996	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
997	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
998	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
999	>	public void testInterruptible(final AwaitMethod awaitMethod) {
1000	>	final Mutex sync = new Mutex();
1001	>	final ConditionObject c = sync.newCondition();
1002	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1003	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1004	>	public void realRun() throws InterruptedException {
1005	>	sync.acquire();
1006	>	assertTrue(pleaseInterrupt.releaseShared(0));
1007	>	await(c, awaitMethod);
1008	>	}});
1009
1010	<	t.start();
883	<	Thread.sleep(SHORT_DELAY_MS);
1010	>	pleaseInterrupt.acquireShared(0);
1011		t.interrupt();
1012	<	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());
1012	>	awaitTermination(t);
1013		}
1014
1015		/**
1016		* signalAll wakes up all threads
1017		*/
1018	<	public void testSignalAll() throws InterruptedException {
1019	<	final Mutex sync = new Mutex();
1020	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1021	<	Thread t1 = new Thread(new Runnable() {
1022	<	public void run() {
1023	<	try {
1024	<	sync.acquire(1);
1025	<	c.await();
1026	<	sync.release(1);
1027	<	}
1028	<	catch (InterruptedException e) {
1029	<	threadUnexpectedException();
1030	<	}
1031	<	}
1032	<	});
1033	<
1034	<	Thread t2 = new Thread(new Runnable() {
1035	<	public void run() {
1036	<	try {
1037	<	sync.acquire(1);
1038	<	c.await();
1039	<	sync.release(1);
1040	<	}
1041	<	catch (InterruptedException e) {
1042	<	threadUnexpectedException();
1043	<	}
1044	<	}
1045	<	});
1046	<
1047	<	t1.start();
949	<	t2.start();
950	<	Thread.sleep(SHORT_DELAY_MS);
951	<	sync.acquire(1);
1018	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1019	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1020	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1021	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1022	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1023	>	final Mutex sync = new Mutex();
1024	>	final ConditionObject c = sync.newCondition();
1025	>	final BooleanLatch acquired1 = new BooleanLatch();
1026	>	final BooleanLatch acquired2 = new BooleanLatch();
1027	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1028	>	public void realRun() throws InterruptedException {
1029	>	sync.acquire();
1030	>	acquired1.releaseShared(0);
1031	>	await(c, awaitMethod);
1032	>	sync.release();
1033	>	}});
1034	>
1035	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1036	>	public void realRun() throws InterruptedException {
1037	>	sync.acquire();
1038	>	acquired2.releaseShared(0);
1039	>	await(c, awaitMethod);
1040	>	sync.release();
1041	>	}});
1042	>
1043	>	acquired1.acquireShared(0);
1044	>	acquired2.acquireShared(0);
1045	>	sync.acquire();
1046	>	assertHasWaitersLocked(sync, c, t1, t2);
1047	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1048		c.signalAll();
1049	<	sync.release(1);
1050	<	t1.join(SHORT_DELAY_MS);
1051	<	t2.join(SHORT_DELAY_MS);
1052	<	assertFalse(t1.isAlive());
1053	<	assertFalse(t2.isAlive());
1049	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1050	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1051	>	sync.release();
1052	>	awaitTermination(t1);
1053	>	awaitTermination(t2);
1054		}
1055
960	–
1056		/**
1057		* toString indicates current state
1058		*/
1059		public void testToString() {
1060		Mutex sync = new Mutex();
1061	<	String us = sync.toString();
1062	<	assertTrue(us.indexOf("State = 0") >= 0);
1063	<	sync.acquire(1);
969	<	String ls = sync.toString();
970	<	assertTrue(ls.indexOf("State = 1") >= 0);
1061	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1062	>	sync.acquire();
1063	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1064		}
1065
1066		/**
1067	<	* A serialized AQS deserializes with current state
1068	<	*/
1069	<	public void testSerialization() throws Exception {
1070	<	Mutex l = new Mutex();
1071	<	l.acquire(1);
1072	<	assertTrue(l.isHeldExclusively());
1073	<
1074	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1075	<	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	<	}
1067	>	* A serialized AQS deserializes with current state, but no queued threads
1068	>	*/
1069	>	public void testSerialization() {
1070	>	Mutex sync = new Mutex();
1071	>	assertFalse(serialClone(sync).isHeldExclusively());
1072	>	sync.acquire();
1073	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1074	>	waitForQueuedThread(sync, t);
1075	>	assertTrue(sync.isHeldExclusively());
1076
1077	+	Mutex clone = serialClone(sync);
1078	+	assertTrue(clone.isHeldExclusively());
1079	+	assertHasExclusiveQueuedThreads(sync, t);
1080	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1081	+	t.interrupt();
1082	+	awaitTermination(t);
1083	+	sync.release();
1084	+	assertFalse(sync.isHeldExclusively());
1085	+	assertTrue(clone.isHeldExclusively());
1086	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1087	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1088	+	}
1089
1090		/**
1091		* tryReleaseShared setting state changes getState
1092		*/
1093		public void testGetStateWithReleaseShared() {
1094	<	final BooleanLatch l = new BooleanLatch();
1095	<	assertFalse(l.isSignalled());
1096	<	l.releaseShared(0);
1097	<	assertTrue(l.isSignalled());
1094	>	final BooleanLatch l = new BooleanLatch();
1095	>	assertFalse(l.isSignalled());
1096	>	assertTrue(l.releaseShared(0));
1097	>	assertTrue(l.isSignalled());
1098		}
1099
1100		/**
1101		* releaseShared has no effect when already signalled
1102		*/
1103		public void testReleaseShared() {
1104	<	final BooleanLatch l = new BooleanLatch();
1105	<	assertFalse(l.isSignalled());
1106	<	l.releaseShared(0);
1107	<	assertTrue(l.isSignalled());
1108	<	l.releaseShared(0);
1109	<	assertTrue(l.isSignalled());
1104	>	final BooleanLatch l = new BooleanLatch();
1105	>	assertFalse(l.isSignalled());
1106	>	assertTrue(l.releaseShared(0));
1107	>	assertTrue(l.isSignalled());
1108	>	assertTrue(l.releaseShared(0));
1109	>	assertTrue(l.isSignalled());
1110		}
1111
1112		/**
1113		* acquireSharedInterruptibly returns after release, but not before
1114		*/
1115	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1116	<	final BooleanLatch l = new BooleanLatch();
1115	>	public void testAcquireSharedInterruptibly() {
1116	>	final BooleanLatch l = new BooleanLatch();
1117
1118	<	Thread t = new Thread(new Runnable() {
1119	<	public void run() {
1120	<	try {
1121	<	threadAssertFalse(l.isSignalled());
1122	<	l.acquireSharedInterruptibly(0);
1123	<	threadAssertTrue(l.isSignalled());
1124	<	} catch (InterruptedException e) {
1125	<	threadUnexpectedException();
1029	<	}
1030	<	}
1031	<	});
1118	>	Thread t = newStartedThread(new CheckedRunnable() {
1119	>	public void realRun() throws InterruptedException {
1120	>	assertFalse(l.isSignalled());
1121	>	l.acquireSharedInterruptibly(0);
1122	>	assertTrue(l.isSignalled());
1123	>	l.acquireSharedInterruptibly(0);
1124	>	assertTrue(l.isSignalled());
1125	>	}});
1126
1127	<	t.start();
1127	>	waitForQueuedThread(l, t);
1128		assertFalse(l.isSignalled());
1129	<	Thread.sleep(SHORT_DELAY_MS);
1130	<	l.releaseShared(0);
1129	>	assertThreadStaysAlive(t);
1130	>	assertHasSharedQueuedThreads(l, t);
1131	>	assertTrue(l.releaseShared(0));
1132		assertTrue(l.isSignalled());
1133	<	t.join();
1133	>	awaitTermination(t);
1134		}
1135
1041	–
1136		/**
1137	<	* acquireSharedTimed returns after release
1137	>	* tryAcquireSharedNanos returns after release, but not before
1138		*/
1139	<	public void testAsquireSharedTimed() throws InterruptedException {
1140	<	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());
1139	>	public void testTryAcquireSharedNanos() {
1140	>	final BooleanLatch l = new BooleanLatch();
1141
1142	<	} catch (InterruptedException e) {
1143	<	threadUnexpectedException();
1144	<	}
1145	<	}
1146	<	});
1142	>	Thread t = newStartedThread(new CheckedRunnable() {
1143	>	public void realRun() throws InterruptedException {
1144	>	assertFalse(l.isSignalled());
1145	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1146	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1147	>	assertTrue(l.isSignalled());
1148	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1149	>	assertTrue(l.isSignalled());
1150	>	}});
1151
1152	<	t.start();
1152	>	waitForQueuedThread(l, t);
1153		assertFalse(l.isSignalled());
1154	<	Thread.sleep(SHORT_DELAY_MS);
1155	<	l.releaseShared(0);
1154	>	assertThreadStaysAlive(t);
1155	>	assertTrue(l.releaseShared(0));
1156		assertTrue(l.isSignalled());
1157	<	t.join();
1157	>	awaitTermination(t);
1158		}
1159
1160		/**
1161	<	* acquireSharedInterruptibly throws IE if interrupted before released
1161	>	* acquireSharedInterruptibly is interruptible
1162		*/
1163	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1163	>	public void testAcquireSharedInterruptibly_Interruptible() {
1164		final BooleanLatch l = new BooleanLatch();
1165	<	Thread t = new Thread(new Runnable() {
1166	<	public void run() {
1167	<	try {
1168	<	threadAssertFalse(l.isSignalled());
1169	<	l.acquireSharedInterruptibly(0);
1170	<	threadShouldThrow();
1171	<	} catch (InterruptedException success) {}
1081	<	}
1082	<	});
1083	<	t.start();
1165	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1166	>	public void realRun() throws InterruptedException {
1167	>	assertFalse(l.isSignalled());
1168	>	l.acquireSharedInterruptibly(0);
1169	>	}});
1170	>
1171	>	waitForQueuedThread(l, t);
1172		assertFalse(l.isSignalled());
1173		t.interrupt();
1174	<	t.join();
1174	>	awaitTermination(t);
1175	>	assertFalse(l.isSignalled());
1176		}
1177
1178		/**
1179	<	* acquireSharedTimed throws IE if interrupted before released
1179	>	* tryAcquireSharedNanos is interruptible
1180		*/
1181	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1181	>	public void testTryAcquireSharedNanos_Interruptible() {
1182		final BooleanLatch l = new BooleanLatch();
1183	<	Thread t = new Thread(new Runnable() {
1184	<	public void run() {
1185	<	try {
1186	<	threadAssertFalse(l.isSignalled());
1187	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1188	<	threadShouldThrow();
1189	<	} catch (InterruptedException success) {}
1190	<	}
1102	<	});
1103	<	t.start();
1104	<	Thread.sleep(SHORT_DELAY_MS);
1183	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1184	>	public void realRun() throws InterruptedException {
1185	>	assertFalse(l.isSignalled());
1186	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1187	>	l.tryAcquireSharedNanos(0, nanos);
1188	>	}});
1189	>
1190	>	waitForQueuedThread(l, t);
1191		assertFalse(l.isSignalled());
1192		t.interrupt();
1193	<	t.join();
1193	>	awaitTermination(t);
1194	>	assertFalse(l.isSignalled());
1195		}
1196
1197		/**
1198	<	* acquireSharedTimed times out if not released before timeout
1198	>	* tryAcquireSharedNanos times out if not released before timeout
1199		*/
1200	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1200	>	public void testTryAcquireSharedNanos_Timeout() {
1201		final BooleanLatch l = new BooleanLatch();
1202	<	Thread t = new Thread(new Runnable() {
1203	<	public void run() {
1204	<	try {
1205	<	threadAssertFalse(l.isSignalled());
1206	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1207	<	} catch (InterruptedException ie) {
1208	<	threadUnexpectedException();
1209	<	}
1202	>	final BooleanLatch observedQueued = new BooleanLatch();
1203	>	Thread t = newStartedThread(new CheckedRunnable() {
1204	>	public void realRun() throws InterruptedException {
1205	>	assertFalse(l.isSignalled());
1206	>	for (long millis = timeoutMillis();
1207	>	!observedQueued.isSignalled();
1208	>	millis *= 2) {
1209	>	long nanos = MILLISECONDS.toNanos(millis);
1210	>	long startTime = System.nanoTime();
1211	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1212	>	assertTrue(millisElapsedSince(startTime) >= millis);
1213		}
1214	<	});
1215	<	t.start();
1216	<	Thread.sleep(SHORT_DELAY_MS);
1214	>	assertFalse(l.isSignalled());
1215	>	}});
1216	>
1217	>	waitForQueuedThread(l, t);
1218	>	observedQueued.releaseShared(0);
1219	>	assertFalse(l.isSignalled());
1220	>	awaitTermination(t);
1221		assertFalse(l.isSignalled());
1128	–	t.join();
1222		}
1223
1224	+	/**
1225	+	* awaitNanos/timed await with 0 wait times out immediately
1226	+	*/
1227	+	public void testAwait_Zero() throws InterruptedException {
1228	+	final Mutex sync = new Mutex();
1229	+	final ConditionObject c = sync.newCondition();
1230	+	sync.acquire();
1231	+	assertTrue(c.awaitNanos(0L) <= 0);
1232	+	assertFalse(c.await(0L, NANOSECONDS));
1233	+	sync.release();
1234	+	}
1235	+
1236	+	/**
1237	+	* awaitNanos/timed await with maximum negative wait times does not underflow
1238	+	*/
1239	+	public void testAwait_NegativeInfinity() throws InterruptedException {
1240	+	final Mutex sync = new Mutex();
1241	+	final ConditionObject c = sync.newCondition();
1242	+	sync.acquire();
1243	+	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1244	+	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1245	+	sync.release();
1246	+	}
1247
1248		}

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