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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.23 by jsr166, Mon Nov 16 04:57:09 2009 UTC vs.
Revision 1.44 by jsr166, Thu May 2 18:01:09 2013 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 java.util.concurrent.locks.AbstractQueuedSynchronizer;
13	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer.ConditionObject;
14
15		public class AbstractQueuedSynchronizerTest extends JSR166TestCase {
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run(suite());
18		}
19		public static Test suite() {
20		return new TestSuite(AbstractQueuedSynchronizerTest.class);
21		}
22
23		/**
24	<	* A simple mutex class, adapted from the
25	<	* AbstractQueuedSynchronizer javadoc.  Exclusive acquire tests
26	<	* exercise this as a sample user extension.  Other
27	<	* methods/features of AbstractQueuedSynchronizerTest are tested
28	<	* via other test classes, including those for ReentrantLock,
30	<	* ReentrantReadWriteLock, and Semaphore
24	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
25	>	* acquire tests exercise this as a sample user extension.  Other
26	>	* methods/features of AbstractQueuedSynchronizer are tested via
27	>	* other test classes, including those for ReentrantLock,
28	>	* ReentrantReadWriteLock, and Semaphore.
29		*/
30		static class Mutex extends AbstractQueuedSynchronizer {
31	<	public boolean isHeldExclusively() { return getState() == 1; }
31	>	/** An eccentric value for locked synchronizer state. */
32	>	static final int LOCKED = (1 << 31) | (1 << 15);
33	>
34	>	static final int UNLOCKED = 0;
35	>
36	>	@Override public boolean isHeldExclusively() {
37	>	int state = getState();
38	>	assertTrue(state == UNLOCKED || state == LOCKED);
39	>	return state == LOCKED;
40	>	}
41
42	<	public boolean tryAcquire(int acquires) {
43	<	assertTrue(acquires == 1);
44	<	return compareAndSetState(0, 1);
42	>	@Override public boolean tryAcquire(int acquires) {
43	>	assertEquals(LOCKED, acquires);
44	>	return compareAndSetState(UNLOCKED, LOCKED);
45		}
46
47	<	public boolean tryRelease(int releases) {
48	<	if (getState() == 0) throw new IllegalMonitorStateException();
49	<	setState(0);
47	>	@Override public boolean tryRelease(int releases) {
48	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
49	>	assertEquals(LOCKED, releases);
50	>	setState(UNLOCKED);
51		return true;
52		}
53
54	<	public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); }
54	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
55	>	return tryAcquireNanos(LOCKED, nanos);
56	>	}
57
58	<	}
58	>	public boolean tryAcquire() {
59	>	return tryAcquire(LOCKED);
60	>	}
61
62	+	public boolean tryRelease() {
63	+	return tryRelease(LOCKED);
64	+	}
65	+
66	+	public void acquire() {
67	+	acquire(LOCKED);
68	+	}
69	+
70	+	public void acquireInterruptibly() throws InterruptedException {
71	+	acquireInterruptibly(LOCKED);
72	+	}
73	+
74	+	public void release() {
75	+	release(LOCKED);
76	+	}
77	+
78	+	public ConditionObject newCondition() {
79	+	return new ConditionObject();
80	+	}
81	+	}
82
83		/**
84		* A simple latch class, to test shared mode.
#	Line 55 | Line 87 | public class AbstractQueuedSynchronizerT
87		public boolean isSignalled() { return getState() != 0; }
88
89		public int tryAcquireShared(int ignore) {
90	<	return isSignalled()? 1 : -1;
90	>	return isSignalled() ? 1 : -1;
91		}
92
93		public boolean tryReleaseShared(int ignore) {
#	Line 65 | Line 97 | public class AbstractQueuedSynchronizerT
97		}
98
99		/**
100	<	* A runnable calling acquireInterruptibly
100	>	* A runnable calling acquireInterruptibly that does not expect to
101	>	* be interrupted.
102		*/
103	<	class InterruptibleSyncRunnable implements Runnable {
103	>	class InterruptibleSyncRunnable extends CheckedRunnable {
104		final Mutex sync;
105	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
106	<	public void run() {
107	<	try {
75	<	sync.acquireInterruptibly(1);
76	<	} catch (InterruptedException success){}
105	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
106	>	public void realRun() throws InterruptedException {
107	>	sync.acquireInterruptibly();
108		}
109		}
110
80	–
111		/**
112		* A runnable calling acquireInterruptibly that expects to be
113	<	* interrupted
113	>	* interrupted.
114		*/
115	<	class InterruptedSyncRunnable implements Runnable {
115	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
116		final Mutex sync;
117	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
118	<	public void run() {
119	<	try {
120	<	sync.acquireInterruptibly(1);
121	<	threadShouldThrow();
122	<	} catch (InterruptedException success){}
117	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
118	>	public void realRun() throws InterruptedException {
119	>	sync.acquireInterruptibly();
120	>	}
121	>	}
122	>
123	>	/** A constant to clarify calls to checking methods below. */
124	>	static final Thread[] NO_THREADS = new Thread[0];
125	>
126	>	/**
127	>	* Spin-waits until sync.isQueued(t) becomes true.
128	>	*/
129	>	void waitForQueuedThread(AbstractQueuedSynchronizer sync, Thread t) {
130	>	long startTime = System.nanoTime();
131	>	while (!sync.isQueued(t)) {
132	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
133	>	throw new AssertionFailedError("timed out");
134	>	Thread.yield();
135		}
136	+	assertTrue(t.isAlive());
137	+	}
138	+
139	+	/**
140	+	* Checks that sync has exactly the given queued threads.
141	+	*/
142	+	void assertHasQueuedThreads(AbstractQueuedSynchronizer sync,
143	+	Thread... expected) {
144	+	Collection<Thread> actual = sync.getQueuedThreads();
145	+	assertEquals(expected.length > 0, sync.hasQueuedThreads());
146	+	assertEquals(expected.length, sync.getQueueLength());
147	+	assertEquals(expected.length, actual.size());
148	+	assertEquals(expected.length == 0, actual.isEmpty());
149	+	assertEquals(new HashSet<Thread>(actual),
150	+	new HashSet<Thread>(Arrays.asList(expected)));
151	+	}
152	+
153	+	/**
154	+	* Checks that sync has exactly the given (exclusive) queued threads.
155	+	*/
156	+	void assertHasExclusiveQueuedThreads(AbstractQueuedSynchronizer sync,
157	+	Thread... expected) {
158	+	assertHasQueuedThreads(sync, expected);
159	+	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
160	+	new HashSet<Thread>(sync.getQueuedThreads()));
161	+	assertEquals(0, sync.getSharedQueuedThreads().size());
162	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
163	+	}
164	+
165	+	/**
166	+	* Checks that sync has exactly the given (shared) queued threads.
167	+	*/
168	+	void assertHasSharedQueuedThreads(AbstractQueuedSynchronizer sync,
169	+	Thread... expected) {
170	+	assertHasQueuedThreads(sync, expected);
171	+	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
172	+	new HashSet<Thread>(sync.getQueuedThreads()));
173	+	assertEquals(0, sync.getExclusiveQueuedThreads().size());
174	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
175	+	}
176	+
177	+	/**
178	+	* Checks that condition c has exactly the given waiter threads,
179	+	* after acquiring mutex.
180	+	*/
181	+	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
182	+	Thread... threads) {
183	+	sync.acquire();
184	+	assertHasWaitersLocked(sync, c, threads);
185	+	sync.release();
186	+	}
187	+
188	+	/**
189	+	* Checks that condition c has exactly the given waiter threads.
190	+	*/
191	+	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
192	+	Thread... threads) {
193	+	assertEquals(threads.length > 0, sync.hasWaiters(c));
194	+	assertEquals(threads.length, sync.getWaitQueueLength(c));
195	+	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
196	+	assertEquals(threads.length, sync.getWaitingThreads(c).size());
197	+	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
198	+	new HashSet<Thread>(Arrays.asList(threads)));
199	+	}
200	+
201	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil };
202	+
203	+	/**
204	+	* Awaits condition using the specified AwaitMethod.
205	+	*/
206	+	void await(ConditionObject c, AwaitMethod awaitMethod)
207	+	throws InterruptedException {
208	+	long timeoutMillis = 2 * LONG_DELAY_MS;
209	+	switch (awaitMethod) {
210	+	case await:
211	+	c.await();
212	+	break;
213	+	case awaitTimed:
214	+	assertTrue(c.await(timeoutMillis, MILLISECONDS));
215	+	break;
216	+	case awaitNanos:
217	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
218	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
219	+	assertTrue(nanosRemaining > 0);
220	+	break;
221	+	case awaitUntil:
222	+	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
223	+	break;
224	+	}
225	+	}
226	+
227	+	/**
228	+	* Checks that awaiting the given condition times out (using the
229	+	* default timeout duration).
230	+	*/
231	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
232	+	long timeoutMillis = timeoutMillis();
233	+	long startTime = System.nanoTime();
234	+	try {
235	+	switch (awaitMethod) {
236	+	case awaitTimed:
237	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
238	+	break;
239	+	case awaitNanos:
240	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
241	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
242	+	assertTrue(nanosRemaining <= 0);
243	+	break;
244	+	case awaitUntil:
245	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
246	+	break;
247	+	default:
248	+	throw new UnsupportedOperationException();
249	+	}
250	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
251	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
252		}
253
254		/**
255		* isHeldExclusively is false upon construction
256		*/
257		public void testIsHeldExclusively() {
258	<	Mutex rl = new Mutex();
259	<	assertFalse(rl.isHeldExclusively());
258	>	Mutex sync = new Mutex();
259	>	assertFalse(sync.isHeldExclusively());
260		}
261
262		/**
263		* acquiring released sync succeeds
264		*/
265		public void testAcquire() {
266	<	Mutex rl = new Mutex();
267	<	rl.acquire(1);
268	<	assertTrue(rl.isHeldExclusively());
269	<	rl.release(1);
270	<	assertFalse(rl.isHeldExclusively());
266	>	Mutex sync = new Mutex();
267	>	sync.acquire();
268	>	assertTrue(sync.isHeldExclusively());
269	>	sync.release();
270	>	assertFalse(sync.isHeldExclusively());
271		}
272
273		/**
274	<	* tryAcquire on an released sync succeeds
274	>	* tryAcquire on a released sync succeeds
275		*/
276		public void testTryAcquire() {
277	<	Mutex rl = new Mutex();
278	<	assertTrue(rl.tryAcquire(1));
279	<	assertTrue(rl.isHeldExclusively());
280	<	rl.release(1);
277	>	Mutex sync = new Mutex();
278	>	assertTrue(sync.tryAcquire());
279	>	assertTrue(sync.isHeldExclusively());
280	>	sync.release();
281	>	assertFalse(sync.isHeldExclusively());
282		}
283
284		/**
285		* hasQueuedThreads reports whether there are waiting threads
286		*/
287	<	public void testhasQueuedThreads() {
288	<	final Mutex sync = new Mutex();
289	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
290	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
291	<	try {
292	<	assertFalse(sync.hasQueuedThreads());
293	<	sync.acquire(1);
294	<	t1.start();
295	<	Thread.sleep(SHORT_DELAY_MS);
296	<	assertTrue(sync.hasQueuedThreads());
297	<	t2.start();
298	<	Thread.sleep(SHORT_DELAY_MS);
299	<	assertTrue(sync.hasQueuedThreads());
300	<	t1.interrupt();
301	<	Thread.sleep(SHORT_DELAY_MS);
302	<	assertTrue(sync.hasQueuedThreads());
144	<	sync.release(1);
145	<	Thread.sleep(SHORT_DELAY_MS);
146	<	assertFalse(sync.hasQueuedThreads());
147	<	t1.join();
148	<	t2.join();
149	<	} catch (Exception e){
150	<	unexpectedException();
151	<	}
287	>	public void testHasQueuedThreads() {
288	>	final Mutex sync = new Mutex();
289	>	assertFalse(sync.hasQueuedThreads());
290	>	sync.acquire();
291	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
292	>	waitForQueuedThread(sync, t1);
293	>	assertTrue(sync.hasQueuedThreads());
294	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
295	>	waitForQueuedThread(sync, t2);
296	>	assertTrue(sync.hasQueuedThreads());
297	>	t1.interrupt();
298	>	awaitTermination(t1);
299	>	assertTrue(sync.hasQueuedThreads());
300	>	sync.release();
301	>	awaitTermination(t2);
302	>	assertFalse(sync.hasQueuedThreads());
303		}
304
305		/**
306	<	* isQueued(null) throws NPE
306	>	* isQueued(null) throws NullPointerException
307		*/
308		public void testIsQueuedNPE() {
309	<	final Mutex sync = new Mutex();
309	>	final Mutex sync = new Mutex();
310		try {
311		sync.isQueued(null);
312		shouldThrow();
313	<	} catch (NullPointerException success) {
163	<	}
313	>	} catch (NullPointerException success) {}
314		}
315
316		/**
317	<	* isQueued reports whether a thread is queued.
317	>	* isQueued reports whether a thread is queued
318		*/
319		public void testIsQueued() {
320	<	final Mutex sync = new Mutex();
320	>	final Mutex sync = new Mutex();
321		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
322		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
323	<	try {
324	<	assertFalse(sync.isQueued(t1));
325	<	assertFalse(sync.isQueued(t2));
326	<	sync.acquire(1);
327	<	t1.start();
328	<	Thread.sleep(SHORT_DELAY_MS);
329	<	assertTrue(sync.isQueued(t1));
330	<	t2.start();
331	<	Thread.sleep(SHORT_DELAY_MS);
332	<	assertTrue(sync.isQueued(t1));
333	<	assertTrue(sync.isQueued(t2));
334	<	t1.interrupt();
335	<	Thread.sleep(SHORT_DELAY_MS);
336	<	assertFalse(sync.isQueued(t1));
337	<	assertTrue(sync.isQueued(t2));
338	<	sync.release(1);
339	<	Thread.sleep(SHORT_DELAY_MS);
340	<	assertFalse(sync.isQueued(t1));
341	<	Thread.sleep(SHORT_DELAY_MS);
192	<	assertFalse(sync.isQueued(t2));
193	<	t1.join();
194	<	t2.join();
195	<	} catch (Exception e){
196	<	unexpectedException();
197	<	}
323	>	assertFalse(sync.isQueued(t1));
324	>	assertFalse(sync.isQueued(t2));
325	>	sync.acquire();
326	>	t1.start();
327	>	waitForQueuedThread(sync, t1);
328	>	assertTrue(sync.isQueued(t1));
329	>	assertFalse(sync.isQueued(t2));
330	>	t2.start();
331	>	waitForQueuedThread(sync, t2);
332	>	assertTrue(sync.isQueued(t1));
333	>	assertTrue(sync.isQueued(t2));
334	>	t1.interrupt();
335	>	awaitTermination(t1);
336	>	assertFalse(sync.isQueued(t1));
337	>	assertTrue(sync.isQueued(t2));
338	>	sync.release();
339	>	awaitTermination(t2);
340	>	assertFalse(sync.isQueued(t1));
341	>	assertFalse(sync.isQueued(t2));
342		}
343
344		/**
345		* getFirstQueuedThread returns first waiting thread or null if none
346		*/
347		public void testGetFirstQueuedThread() {
348	<	final Mutex sync = new Mutex();
349	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
350	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
351	<	try {
352	<	assertNull(sync.getFirstQueuedThread());
353	<	sync.acquire(1);
354	<	t1.start();
355	<	Thread.sleep(SHORT_DELAY_MS);
356	<	assertEquals(t1, sync.getFirstQueuedThread());
357	<	t2.start();
358	<	Thread.sleep(SHORT_DELAY_MS);
359	<	assertEquals(t1, sync.getFirstQueuedThread());
360	<	t1.interrupt();
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	Thread.sleep(SHORT_DELAY_MS);
219	<	assertEquals(t2, sync.getFirstQueuedThread());
220	<	sync.release(1);
221	<	Thread.sleep(SHORT_DELAY_MS);
222	<	assertNull(sync.getFirstQueuedThread());
223	<	t1.join();
224	<	t2.join();
225	<	} catch (Exception e){
226	<	unexpectedException();
227	<	}
348	>	final Mutex sync = new Mutex();
349	>	assertNull(sync.getFirstQueuedThread());
350	>	sync.acquire();
351	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
352	>	waitForQueuedThread(sync, t1);
353	>	assertEquals(t1, sync.getFirstQueuedThread());
354	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
355	>	waitForQueuedThread(sync, t2);
356	>	assertEquals(t1, sync.getFirstQueuedThread());
357	>	t1.interrupt();
358	>	awaitTermination(t1);
359	>	assertEquals(t2, sync.getFirstQueuedThread());
360	>	sync.release();
361	>	awaitTermination(t2);
362	>	assertNull(sync.getFirstQueuedThread());
363		}
364
230	–
365		/**
366		* hasContended reports false if no thread has ever blocked, else true
367		*/
368		public void testHasContended() {
369	<	final Mutex sync = new Mutex();
370	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
371	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
372	<	try {
373	<	assertFalse(sync.hasContended());
374	<	sync.acquire(1);
375	<	t1.start();
376	<	Thread.sleep(SHORT_DELAY_MS);
377	<	assertTrue(sync.hasContended());
378	<	t2.start();
379	<	Thread.sleep(SHORT_DELAY_MS);
380	<	assertTrue(sync.hasContended());
381	<	t1.interrupt();
382	<	Thread.sleep(SHORT_DELAY_MS);
383	<	assertTrue(sync.hasContended());
384	<	sync.release(1);
251	<	Thread.sleep(SHORT_DELAY_MS);
252	<	assertTrue(sync.hasContended());
253	<	t1.join();
254	<	t2.join();
255	<	} catch (Exception e){
256	<	unexpectedException();
257	<	}
369	>	final Mutex sync = new Mutex();
370	>	assertFalse(sync.hasContended());
371	>	sync.acquire();
372	>	assertFalse(sync.hasContended());
373	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
374	>	waitForQueuedThread(sync, t1);
375	>	assertTrue(sync.hasContended());
376	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
377	>	waitForQueuedThread(sync, t2);
378	>	assertTrue(sync.hasContended());
379	>	t1.interrupt();
380	>	awaitTermination(t1);
381	>	assertTrue(sync.hasContended());
382	>	sync.release();
383	>	awaitTermination(t2);
384	>	assertTrue(sync.hasContended());
385		}
386
387		/**
388	<	* getQueuedThreads includes waiting threads
388	>	* getQueuedThreads returns all waiting threads
389		*/
390		public void testGetQueuedThreads() {
391	<	final Mutex sync = new Mutex();
391	>	final Mutex sync = new Mutex();
392		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
393		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
394	<	try {
395	<	assertTrue(sync.getQueuedThreads().isEmpty());
396	<	sync.acquire(1);
397	<	assertTrue(sync.getQueuedThreads().isEmpty());
398	<	t1.start();
399	<	Thread.sleep(SHORT_DELAY_MS);
400	<	assertTrue(sync.getQueuedThreads().contains(t1));
401	<	t2.start();
402	<	Thread.sleep(SHORT_DELAY_MS);
403	<	assertTrue(sync.getQueuedThreads().contains(t1));
404	<	assertTrue(sync.getQueuedThreads().contains(t2));
405	<	t1.interrupt();
406	<	Thread.sleep(SHORT_DELAY_MS);
407	<	assertFalse(sync.getQueuedThreads().contains(t1));
408	<	assertTrue(sync.getQueuedThreads().contains(t2));
409	<	sync.release(1);
410	<	Thread.sleep(SHORT_DELAY_MS);
411	<	assertTrue(sync.getQueuedThreads().isEmpty());
412	<	t1.join();
286	<	t2.join();
287	<	} catch (Exception e){
288	<	unexpectedException();
289	<	}
394	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
395	>	sync.acquire();
396	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
397	>	t1.start();
398	>	waitForQueuedThread(sync, t1);
399	>	assertHasExclusiveQueuedThreads(sync, t1);
400	>	assertTrue(sync.getQueuedThreads().contains(t1));
401	>	assertFalse(sync.getQueuedThreads().contains(t2));
402	>	t2.start();
403	>	waitForQueuedThread(sync, t2);
404	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
405	>	assertTrue(sync.getQueuedThreads().contains(t1));
406	>	assertTrue(sync.getQueuedThreads().contains(t2));
407	>	t1.interrupt();
408	>	awaitTermination(t1);
409	>	assertHasExclusiveQueuedThreads(sync, t2);
410	>	sync.release();
411	>	awaitTermination(t2);
412	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
413		}
414
415		/**
416	<	* getExclusiveQueuedThreads includes waiting threads
416	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
417		*/
418		public void testGetExclusiveQueuedThreads() {
419	<	final Mutex sync = new Mutex();
419	>	final Mutex sync = new Mutex();
420		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
421		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
422	<	try {
423	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
424	<	sync.acquire(1);
425	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
426	<	t1.start();
427	<	Thread.sleep(SHORT_DELAY_MS);
428	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
429	<	t2.start();
430	<	Thread.sleep(SHORT_DELAY_MS);
431	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
432	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
433	<	t1.interrupt();
434	<	Thread.sleep(SHORT_DELAY_MS);
435	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
436	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
437	<	sync.release(1);
438	<	Thread.sleep(SHORT_DELAY_MS);
439	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
440	<	t1.join();
318	<	t2.join();
319	<	} catch (Exception e){
320	<	unexpectedException();
321	<	}
422	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
423	>	sync.acquire();
424	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
425	>	t1.start();
426	>	waitForQueuedThread(sync, t1);
427	>	assertHasExclusiveQueuedThreads(sync, t1);
428	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
429	>	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
430	>	t2.start();
431	>	waitForQueuedThread(sync, t2);
432	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
433	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
434	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
435	>	t1.interrupt();
436	>	awaitTermination(t1);
437	>	assertHasExclusiveQueuedThreads(sync, t2);
438	>	sync.release();
439	>	awaitTermination(t2);
440	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
441		}
442
443		/**
444		* getSharedQueuedThreads does not include exclusively waiting threads
445		*/
446	<	public void testGetSharedQueuedThreads() {
447	<	final Mutex sync = new Mutex();
448	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
449	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
450	<	try {
451	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
452	<	sync.acquire(1);
453	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
454	<	t1.start();
455	<	Thread.sleep(SHORT_DELAY_MS);
456	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
457	<	t2.start();
458	<	Thread.sleep(SHORT_DELAY_MS);
459	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
460	<	t1.interrupt();
461	<	Thread.sleep(SHORT_DELAY_MS);
462	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
344	<	sync.release(1);
345	<	Thread.sleep(SHORT_DELAY_MS);
346	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
347	<	t1.join();
348	<	t2.join();
349	<	} catch (Exception e){
350	<	unexpectedException();
351	<	}
446	>	public void testGetSharedQueuedThreads_Exclusive() {
447	>	final Mutex sync = new Mutex();
448	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
449	>	sync.acquire();
450	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
451	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
452	>	waitForQueuedThread(sync, t1);
453	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
454	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
455	>	waitForQueuedThread(sync, t2);
456	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
457	>	t1.interrupt();
458	>	awaitTermination(t1);
459	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
460	>	sync.release();
461	>	awaitTermination(t2);
462	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
463		}
464
465		/**
466	<	* tryAcquireNanos is interruptible.
466	>	* getSharedQueuedThreads returns all shared waiting threads
467		*/
468	<	public void testInterruptedException2() {
469	<	final Mutex sync = new Mutex();
470	<	sync.acquire(1);
471	<	Thread t = new Thread(new Runnable() {
472	<	public void run() {
473	<	try {
474	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
475	<	threadShouldThrow();
476	<	} catch (InterruptedException success){}
477	<	}
478	<	});
479	<	try {
480	<	t.start();
481	<	t.interrupt();
482	<	} catch (Exception e){
483	<	unexpectedException();
484	<	}
468	>	public void testGetSharedQueuedThreads_Shared() {
469	>	final BooleanLatch l = new BooleanLatch();
470	>	assertHasSharedQueuedThreads(l, NO_THREADS);
471	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
472	>	public void realRun() throws InterruptedException {
473	>	l.acquireSharedInterruptibly(0);
474	>	}});
475	>	waitForQueuedThread(l, t1);
476	>	assertHasSharedQueuedThreads(l, t1);
477	>	Thread t2 = newStartedThread(new CheckedRunnable() {
478	>	public void realRun() throws InterruptedException {
479	>	l.acquireSharedInterruptibly(0);
480	>	}});
481	>	waitForQueuedThread(l, t2);
482	>	assertHasSharedQueuedThreads(l, t1, t2);
483	>	t1.interrupt();
484	>	awaitTermination(t1);
485	>	assertHasSharedQueuedThreads(l, t2);
486	>	assertTrue(l.releaseShared(0));
487	>	awaitTermination(t2);
488	>	assertHasSharedQueuedThreads(l, NO_THREADS);
489		}
490
491	+	/**
492	+	* tryAcquireNanos is interruptible
493	+	*/
494	+	public void testTryAcquireNanos_Interruptible() {
495	+	final Mutex sync = new Mutex();
496	+	sync.acquire();
497	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
498	+	public void realRun() throws InterruptedException {
499	+	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
500	+	}});
501	+
502	+	waitForQueuedThread(sync, t);
503	+	t.interrupt();
504	+	awaitTermination(t);
505	+	}
506
507		/**
508	<	* TryAcquire on exclusively held sync fails
508	>	* tryAcquire on exclusively held sync fails
509		*/
510		public void testTryAcquireWhenSynced() {
511	<	final Mutex sync = new Mutex();
512	<	sync.acquire(1);
513	<	Thread t = new Thread(new Runnable() {
514	<	public void run() {
515	<	threadAssertFalse(sync.tryAcquire(1));
516	<	}
517	<	});
518	<	try {
519	<	t.start();
390	<	t.join();
391	<	sync.release(1);
392	<	} catch (Exception e){
393	<	unexpectedException();
394	<	}
511	>	final Mutex sync = new Mutex();
512	>	sync.acquire();
513	>	Thread t = newStartedThread(new CheckedRunnable() {
514	>	public void realRun() {
515	>	assertFalse(sync.tryAcquire());
516	>	}});
517	>
518	>	awaitTermination(t);
519	>	sync.release();
520		}
521
522		/**
523		* tryAcquireNanos on an exclusively held sync times out
524		*/
525		public void testAcquireNanos_Timeout() {
526	<	final Mutex sync = new Mutex();
527	<	sync.acquire(1);
528	<	Thread t = new Thread(new Runnable() {
529	<	public void run() {
530	<	try {
531	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
532	<	} catch (Exception ex) {
533	<	threadUnexpectedException();
534	<	}
410	<	}
411	<	});
412	<	try {
413	<	t.start();
414	<	t.join();
415	<	sync.release(1);
416	<	} catch (Exception e){
417	<	unexpectedException();
418	<	}
419	<	}
526	>	final Mutex sync = new Mutex();
527	>	sync.acquire();
528	>	Thread t = newStartedThread(new CheckedRunnable() {
529	>	public void realRun() throws InterruptedException {
530	>	long startTime = System.nanoTime();
531	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
532	>	assertFalse(sync.tryAcquireNanos(nanos));
533	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
534	>	}});
535
536	+	awaitTermination(t);
537	+	sync.release();
538	+	}
539
540		/**
541		* getState is true when acquired and false when not
542		*/
543		public void testGetState() {
544	<	final Mutex sync = new Mutex();
545	<	sync.acquire(1);
546	<	assertTrue(sync.isHeldExclusively());
547	<	sync.release(1);
548	<	assertFalse(sync.isHeldExclusively());
549	<	Thread t = new Thread(new Runnable() {
550	<	public void run() {
551	<	sync.acquire(1);
552	<	try {
553	<	Thread.sleep(SMALL_DELAY_MS);
554	<	}
555	<	catch (Exception e) {
556	<	threadUnexpectedException();
557	<	}
558	<	sync.release(1);
559	<	}
560	<	});
561	<	try {
562	<	t.start();
563	<	Thread.sleep(SHORT_DELAY_MS);
564	<	assertTrue(sync.isHeldExclusively());
447	<	t.join();
448	<	assertFalse(sync.isHeldExclusively());
449	<	} catch (Exception e){
450	<	unexpectedException();
451	<	}
452	<	}
453	<
454	<
455	<	/**
456	<	* acquireInterruptibly is interruptible.
457	<	*/
458	<	public void testAcquireInterruptibly1() {
459	<	final Mutex sync = new Mutex();
460	<	sync.acquire(1);
461	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
462	<	try {
463	<	t.start();
464	<	Thread.sleep(SHORT_DELAY_MS);
465	<	t.interrupt();
466	<	Thread.sleep(SHORT_DELAY_MS);
467	<	sync.release(1);
468	<	t.join();
469	<	} catch (Exception e){
470	<	unexpectedException();
471	<	}
544	>	final Mutex sync = new Mutex();
545	>	sync.acquire();
546	>	assertTrue(sync.isHeldExclusively());
547	>	sync.release();
548	>	assertFalse(sync.isHeldExclusively());
549	>
550	>	final BooleanLatch acquired = new BooleanLatch();
551	>	final BooleanLatch done = new BooleanLatch();
552	>	Thread t = newStartedThread(new CheckedRunnable() {
553	>	public void realRun() throws InterruptedException {
554	>	sync.acquire();
555	>	assertTrue(acquired.releaseShared(0));
556	>	done.acquireShared(0);
557	>	sync.release();
558	>	}});
559	>
560	>	acquired.acquireShared(0);
561	>	assertTrue(sync.isHeldExclusively());
562	>	assertTrue(done.releaseShared(0));
563	>	awaitTermination(t);
564	>	assertFalse(sync.isHeldExclusively());
565		}
566
567		/**
568		* acquireInterruptibly succeeds when released, else is interruptible
569		*/
570	<	public void testAcquireInterruptibly2() {
571	<	final Mutex sync = new Mutex();
572	<	try {
573	<	sync.acquireInterruptibly(1);
574	<	} catch (Exception e) {
575	<	unexpectedException();
576	<	}
577	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
578	<	try {
579	<	t.start();
580	<	t.interrupt();
581	<	assertTrue(sync.isHeldExclusively());
582	<	t.join();
583	<	} catch (Exception e){
584	<	unexpectedException();
492	<	}
570	>	public void testAcquireInterruptibly() throws InterruptedException {
571	>	final Mutex sync = new Mutex();
572	>	final BooleanLatch threadStarted = new BooleanLatch();
573	>	sync.acquireInterruptibly();
574	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
575	>	public void realRun() throws InterruptedException {
576	>	assertTrue(threadStarted.releaseShared(0));
577	>	sync.acquireInterruptibly();
578	>	}});
579	>
580	>	threadStarted.acquireShared(0);
581	>	waitForQueuedThread(sync, t);
582	>	t.interrupt();
583	>	awaitTermination(t);
584	>	assertTrue(sync.isHeldExclusively());
585		}
586
587		/**
588		* owns is true for a condition created by sync else false
589		*/
590		public void testOwns() {
591	<	final Mutex sync = new Mutex();
592	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
591	>	final Mutex sync = new Mutex();
592	>	final ConditionObject c = sync.newCondition();
593		final Mutex sync2 = new Mutex();
594		assertTrue(sync.owns(c));
595		assertFalse(sync2.owns(c));
#	Line 506 | Line 598 | public class AbstractQueuedSynchronizerT
598		/**
599		* Calling await without holding sync throws IllegalMonitorStateException
600		*/
601	<	public void testAwait_IllegalMonitor() {
602	<	final Mutex sync = new Mutex();
603	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
604	<	try {
605	<	c.await();
606	<	shouldThrow();
607	<	}
608	<	catch (IllegalMonitorStateException success) {
609	<	}
610	<	catch (Exception ex) {
611	<	unexpectedException();
601	>	public void testAwait_IMSE() {
602	>	final Mutex sync = new Mutex();
603	>	final ConditionObject c = sync.newCondition();
604	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
605	>	long startTime = System.nanoTime();
606	>	try {
607	>	await(c, awaitMethod);
608	>	shouldThrow();
609	>	} catch (IllegalMonitorStateException success) {
610	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
611	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
612		}
613		}
614
615		/**
616		* Calling signal without holding sync throws IllegalMonitorStateException
617		*/
618	<	public void testSignal_IllegalMonitor() {
619	<	final Mutex sync = new Mutex();
620	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
618	>	public void testSignal_IMSE() {
619	>	final Mutex sync = new Mutex();
620	>	final ConditionObject c = sync.newCondition();
621		try {
622		c.signal();
623		shouldThrow();
624	<	}
625	<	catch (IllegalMonitorStateException success) {
534	<	}
535	<	catch (Exception ex) {
536	<	unexpectedException();
537	<	}
624	>	} catch (IllegalMonitorStateException success) {}
625	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
626		}
627
628		/**
629	<	* awaitNanos without a signal times out
629	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
630		*/
631	<	public void testAwaitNanos_Timeout() {
632	<	final Mutex sync = new Mutex();
633	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
631	>	public void testSignalAll_IMSE() {
632	>	final Mutex sync = new Mutex();
633	>	final ConditionObject c = sync.newCondition();
634		try {
635	<	sync.acquire(1);
636	<	long t = c.awaitNanos(100);
637	<	assertTrue(t <= 0);
550	<	sync.release(1);
551	<	}
552	<	catch (Exception ex) {
553	<	unexpectedException();
554	<	}
635	>	c.signalAll();
636	>	shouldThrow();
637	>	} catch (IllegalMonitorStateException success) {}
638		}
639
640		/**
641	<	*  Timed await without a signal times out
641	>	* await/awaitNanos/awaitUntil without a signal times out
642		*/
643	<	public void testAwait_Timeout() {
644	<	final Mutex sync = new Mutex();
645	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
646	<	try {
647	<	sync.acquire(1);
648	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
649	<	sync.release(1);
650	<	}
651	<	catch (Exception ex) {
569	<	unexpectedException();
570	<	}
643	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
644	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
645	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
646	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
647	>	final Mutex sync = new Mutex();
648	>	final ConditionObject c = sync.newCondition();
649	>	sync.acquire();
650	>	assertAwaitTimesOut(c, awaitMethod);
651	>	sync.release();
652		}
653
654		/**
655	<	* awaitUntil without a signal times out
656	<	*/
657	<	public void testAwaitUntil_Timeout() {
658	<	final Mutex sync = new Mutex();
659	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
660	<	try {
661	<	sync.acquire(1);
662	<	java.util.Date d = new java.util.Date();
663	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
664	<	sync.release(1);
665	<	}
666	<	catch (Exception ex) {
667	<	unexpectedException();
668	<	}
655	>	* await/awaitNanos/awaitUntil returns when signalled
656	>	*/
657	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
658	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
659	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
660	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
661	>	public void testSignal(final AwaitMethod awaitMethod) {
662	>	final Mutex sync = new Mutex();
663	>	final ConditionObject c = sync.newCondition();
664	>	final BooleanLatch acquired = new BooleanLatch();
665	>	Thread t = newStartedThread(new CheckedRunnable() {
666	>	public void realRun() throws InterruptedException {
667	>	sync.acquire();
668	>	assertTrue(acquired.releaseShared(0));
669	>	await(c, awaitMethod);
670	>	sync.release();
671	>	}});
672	>
673	>	acquired.acquireShared(0);
674	>	sync.acquire();
675	>	assertHasWaitersLocked(sync, c, t);
676	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
677	>	c.signal();
678	>	assertHasWaitersLocked(sync, c, NO_THREADS);
679	>	assertHasExclusiveQueuedThreads(sync, t);
680	>	sync.release();
681	>	awaitTermination(t);
682		}
683
684		/**
685	<	* await returns when signalled
592	<	*/
593	<	public void testAwait() {
594	<	final Mutex sync = new Mutex();
595	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
596	<	Thread t = new Thread(new Runnable() {
597	<	public void run() {
598	<	try {
599	<	sync.acquire(1);
600	<	c.await();
601	<	sync.release(1);
602	<	}
603	<	catch (InterruptedException e) {
604	<	threadUnexpectedException();
605	<	}
606	<	}
607	<	});
608	<
609	<	try {
610	<	t.start();
611	<	Thread.sleep(SHORT_DELAY_MS);
612	<	sync.acquire(1);
613	<	c.signal();
614	<	sync.release(1);
615	<	t.join(SHORT_DELAY_MS);
616	<	assertFalse(t.isAlive());
617	<	}
618	<	catch (Exception ex) {
619	<	unexpectedException();
620	<	}
621	<	}
622	<
623	<
624	<
625	<	/**
626	<	* hasWaiters throws NPE if null
685	>	* hasWaiters(null) throws NullPointerException
686		*/
687		public void testHasWaitersNPE() {
688	<	final Mutex sync = new Mutex();
688	>	final Mutex sync = new Mutex();
689		try {
690		sync.hasWaiters(null);
691		shouldThrow();
692	<	} catch (NullPointerException success) {
634	<	} catch (Exception ex) {
635	<	unexpectedException();
636	<	}
692	>	} catch (NullPointerException success) {}
693		}
694
695		/**
696	<	* getWaitQueueLength throws NPE if null
696	>	* getWaitQueueLength(null) throws NullPointerException
697		*/
698		public void testGetWaitQueueLengthNPE() {
699	<	final Mutex sync = new Mutex();
699	>	final Mutex sync = new Mutex();
700		try {
701		sync.getWaitQueueLength(null);
702		shouldThrow();
703	<	} catch (NullPointerException success) {
648	<	} catch (Exception ex) {
649	<	unexpectedException();
650	<	}
703	>	} catch (NullPointerException success) {}
704		}
705
653	–
706		/**
707	<	* getWaitingThreads throws NPE if null
707	>	* getWaitingThreads(null) throws NullPointerException
708		*/
709		public void testGetWaitingThreadsNPE() {
710	<	final Mutex sync = new Mutex();
710	>	final Mutex sync = new Mutex();
711		try {
712		sync.getWaitingThreads(null);
713		shouldThrow();
714	<	} catch (NullPointerException success) {
663	<	} catch (Exception ex) {
664	<	unexpectedException();
665	<	}
714	>	} catch (NullPointerException success) {}
715		}
716
668	–
717		/**
718	<	* hasWaiters throws IAE if not owned
718	>	* hasWaiters throws IllegalArgumentException if not owned
719		*/
720		public void testHasWaitersIAE() {
721	<	final Mutex sync = new Mutex();
722	<	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
723	<	final Mutex sync2 = new Mutex();
721	>	final Mutex sync = new Mutex();
722	>	final ConditionObject c = sync.newCondition();
723	>	final Mutex sync2 = new Mutex();
724		try {
725		sync2.hasWaiters(c);
726		shouldThrow();
727	<	} catch (IllegalArgumentException success) {
728	<	} catch (Exception ex) {
681	<	unexpectedException();
682	<	}
727	>	} catch (IllegalArgumentException success) {}
728	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
729		}
730
731		/**
732	<	* hasWaiters throws IMSE if not synced
732	>	* hasWaiters throws IllegalMonitorStateException if not synced
733		*/
734		public void testHasWaitersIMSE() {
735	<	final Mutex sync = new Mutex();
736	<	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
735	>	final Mutex sync = new Mutex();
736	>	final ConditionObject c = sync.newCondition();
737		try {
738		sync.hasWaiters(c);
739		shouldThrow();
740	<	} catch (IllegalMonitorStateException success) {
741	<	} catch (Exception ex) {
696	<	unexpectedException();
697	<	}
740	>	} catch (IllegalMonitorStateException success) {}
741	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
742		}
743
700	–
744		/**
745	<	* getWaitQueueLength throws IAE if not owned
745	>	* getWaitQueueLength throws IllegalArgumentException if not owned
746		*/
747		public void testGetWaitQueueLengthIAE() {
748	<	final Mutex sync = new Mutex();
749	<	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
750	<	final Mutex sync2 = new Mutex();
748	>	final Mutex sync = new Mutex();
749	>	final ConditionObject c = sync.newCondition();
750	>	final Mutex sync2 = new Mutex();
751		try {
752		sync2.getWaitQueueLength(c);
753		shouldThrow();
754	<	} catch (IllegalArgumentException success) {
755	<	} catch (Exception ex) {
713	<	unexpectedException();
714	<	}
754	>	} catch (IllegalArgumentException success) {}
755	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
756		}
757
758		/**
759	<	* getWaitQueueLength throws IMSE if not synced
759	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
760		*/
761		public void testGetWaitQueueLengthIMSE() {
762	<	final Mutex sync = new Mutex();
763	<	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
762	>	final Mutex sync = new Mutex();
763	>	final ConditionObject c = sync.newCondition();
764		try {
765		sync.getWaitQueueLength(c);
766		shouldThrow();
767	<	} catch (IllegalMonitorStateException success) {
768	<	} catch (Exception ex) {
728	<	unexpectedException();
729	<	}
767	>	} catch (IllegalMonitorStateException success) {}
768	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
769		}
770
732	–
771		/**
772	<	* getWaitingThreads throws IAE if not owned
772	>	* getWaitingThreads throws IllegalArgumentException if not owned
773		*/
774		public void testGetWaitingThreadsIAE() {
775	<	final Mutex sync = new Mutex();
776	<	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
777	<	final Mutex sync2 = new Mutex();
775	>	final Mutex sync = new Mutex();
776	>	final ConditionObject c = sync.newCondition();
777	>	final Mutex sync2 = new Mutex();
778		try {
779		sync2.getWaitingThreads(c);
780		shouldThrow();
781	<	} catch (IllegalArgumentException success) {
782	<	} catch (Exception ex) {
745	<	unexpectedException();
746	<	}
781	>	} catch (IllegalArgumentException success) {}
782	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
783		}
784
785		/**
786	<	* getWaitingThreads throws IMSE if not synced
786	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
787		*/
788		public void testGetWaitingThreadsIMSE() {
789	<	final Mutex sync = new Mutex();
790	<	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
789	>	final Mutex sync = new Mutex();
790	>	final ConditionObject c = sync.newCondition();
791		try {
792		sync.getWaitingThreads(c);
793		shouldThrow();
794	<	} catch (IllegalMonitorStateException success) {
795	<	} catch (Exception ex) {
760	<	unexpectedException();
761	<	}
794	>	} catch (IllegalMonitorStateException success) {}
795	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
796		}
797
764	–
765	–
798		/**
799		* hasWaiters returns true when a thread is waiting, else false
800		*/
801		public void testHasWaiters() {
802	<	final Mutex sync = new Mutex();
803	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
804	<	Thread t = new Thread(new Runnable() {
805	<	public void run() {
806	<	try {
807	<	sync.acquire(1);
808	<	threadAssertFalse(sync.hasWaiters(c));
809	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
810	<	c.await();
811	<	sync.release(1);
812	<	}
813	<	catch (InterruptedException e) {
814	<	threadUnexpectedException();
815	<	}
816	<	}
817	<	});
802	>	final Mutex sync = new Mutex();
803	>	final ConditionObject c = sync.newCondition();
804	>	final BooleanLatch acquired = new BooleanLatch();
805	>	Thread t = newStartedThread(new CheckedRunnable() {
806	>	public void realRun() throws InterruptedException {
807	>	sync.acquire();
808	>	assertHasWaitersLocked(sync, c, NO_THREADS);
809	>	assertFalse(sync.hasWaiters(c));
810	>	assertTrue(acquired.releaseShared(0));
811	>	c.await();
812	>	sync.release();
813	>	}});
814	>
815	>	acquired.acquireShared(0);
816	>	sync.acquire();
817	>	assertHasWaitersLocked(sync, c, t);
818	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
819	>	assertTrue(sync.hasWaiters(c));
820	>	c.signal();
821	>	assertHasWaitersLocked(sync, c, NO_THREADS);
822	>	assertHasExclusiveQueuedThreads(sync, t);
823	>	assertFalse(sync.hasWaiters(c));
824	>	sync.release();
825
826	<	try {
827	<	t.start();
789	<	Thread.sleep(SHORT_DELAY_MS);
790	<	sync.acquire(1);
791	<	assertTrue(sync.hasWaiters(c));
792	<	assertEquals(1, sync.getWaitQueueLength(c));
793	<	c.signal();
794	<	sync.release(1);
795	<	Thread.sleep(SHORT_DELAY_MS);
796	<	sync.acquire(1);
797	<	assertFalse(sync.hasWaiters(c));
798	<	assertEquals(0, sync.getWaitQueueLength(c));
799	<	sync.release(1);
800	<	t.join(SHORT_DELAY_MS);
801	<	assertFalse(t.isAlive());
802	<	}
803	<	catch (Exception ex) {
804	<	unexpectedException();
805	<	}
826	>	awaitTermination(t);
827	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
828		}
829
830		/**
831		* getWaitQueueLength returns number of waiting threads
832		*/
833		public void testGetWaitQueueLength() {
834	<	final Mutex sync = new Mutex();
835	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
836	<	Thread t1 = new Thread(new Runnable() {
837	<	public void run() {
838	<	try {
839	<	sync.acquire(1);
840	<	threadAssertFalse(sync.hasWaiters(c));
841	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
842	<	c.await();
843	<	sync.release(1);
844	<	}
845	<	catch (InterruptedException e) {
846	<	threadUnexpectedException();
847	<	}
848	<	}
849	<	});
850	<
851	<	Thread t2 = new Thread(new Runnable() {
852	<	public void run() {
853	<	try {
854	<	sync.acquire(1);
855	<	threadAssertTrue(sync.hasWaiters(c));
856	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
857	<	c.await();
858	<	sync.release(1);
859	<	}
860	<	catch (InterruptedException e) {
861	<	threadUnexpectedException();
862	<	}
863	<	}
864	<	});
865	<
866	<	try {
867	<	t1.start();
868	<	Thread.sleep(SHORT_DELAY_MS);
869	<	t2.start();
870	<	Thread.sleep(SHORT_DELAY_MS);
871	<	sync.acquire(1);
872	<	assertTrue(sync.hasWaiters(c));
873	<	assertEquals(2, sync.getWaitQueueLength(c));
874	<	c.signalAll();
875	<	sync.release(1);
854	<	Thread.sleep(SHORT_DELAY_MS);
855	<	sync.acquire(1);
856	<	assertFalse(sync.hasWaiters(c));
857	<	assertEquals(0, sync.getWaitQueueLength(c));
858	<	sync.release(1);
859	<	t1.join(SHORT_DELAY_MS);
860	<	t2.join(SHORT_DELAY_MS);
861	<	assertFalse(t1.isAlive());
862	<	assertFalse(t2.isAlive());
863	<	}
864	<	catch (Exception ex) {
865	<	unexpectedException();
866	<	}
834	>	final Mutex sync = new Mutex();
835	>	final ConditionObject c = sync.newCondition();
836	>	final BooleanLatch acquired1 = new BooleanLatch();
837	>	final BooleanLatch acquired2 = new BooleanLatch();
838	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
839	>	public void realRun() throws InterruptedException {
840	>	sync.acquire();
841	>	assertHasWaitersLocked(sync, c, NO_THREADS);
842	>	assertEquals(0, sync.getWaitQueueLength(c));
843	>	assertTrue(acquired1.releaseShared(0));
844	>	c.await();
845	>	sync.release();
846	>	}});
847	>	acquired1.acquireShared(0);
848	>	sync.acquire();
849	>	assertHasWaitersLocked(sync, c, t1);
850	>	assertEquals(1, sync.getWaitQueueLength(c));
851	>	sync.release();
852	>
853	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
854	>	public void realRun() throws InterruptedException {
855	>	sync.acquire();
856	>	assertHasWaitersLocked(sync, c, t1);
857	>	assertEquals(1, sync.getWaitQueueLength(c));
858	>	assertTrue(acquired2.releaseShared(0));
859	>	c.await();
860	>	sync.release();
861	>	}});
862	>	acquired2.acquireShared(0);
863	>	sync.acquire();
864	>	assertHasWaitersLocked(sync, c, t1, t2);
865	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
866	>	assertEquals(2, sync.getWaitQueueLength(c));
867	>	c.signalAll();
868	>	assertHasWaitersLocked(sync, c, NO_THREADS);
869	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
870	>	assertEquals(0, sync.getWaitQueueLength(c));
871	>	sync.release();
872	>
873	>	awaitTermination(t1);
874	>	awaitTermination(t2);
875	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
876		}
877
878		/**
879		* getWaitingThreads returns only and all waiting threads
880		*/
881		public void testGetWaitingThreads() {
882	<	final Mutex sync = new Mutex();
883	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
884	<	Thread t1 = new Thread(new Runnable() {
885	<	public void run() {
886	<	try {
887	<	sync.acquire(1);
888	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
889	<	c.await();
890	<	sync.release(1);
891	<	}
892	<	catch (InterruptedException e) {
893	<	threadUnexpectedException();
894	<	}
895	<	}
896	<	});
897	<
898	<	Thread t2 = new Thread(new Runnable() {
899	<	public void run() {
900	<	try {
901	<	sync.acquire(1);
902	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
903	<	c.await();
904	<	sync.release(1);
905	<	}
906	<	catch (InterruptedException e) {
907	<	threadUnexpectedException();
908	<	}
909	<	}
910	<	});
911	<
912	<	try {
913	<	sync.acquire(1);
914	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
915	<	sync.release(1);
916	<	t1.start();
917	<	Thread.sleep(SHORT_DELAY_MS);
918	<	t2.start();
919	<	Thread.sleep(SHORT_DELAY_MS);
920	<	sync.acquire(1);
921	<	assertTrue(sync.hasWaiters(c));
922	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
923	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
924	<	c.signalAll();
925	<	sync.release(1);
926	<	Thread.sleep(SHORT_DELAY_MS);
927	<	sync.acquire(1);
928	<	assertFalse(sync.hasWaiters(c));
929	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
930	<	sync.release(1);
931	<	t1.join(SHORT_DELAY_MS);
932	<	t2.join(SHORT_DELAY_MS);
933	<	assertFalse(t1.isAlive());
934	<	assertFalse(t2.isAlive());
935	<	}
936	<	catch (Exception ex) {
937	<	unexpectedException();
938	<	}
882	>	final Mutex sync = new Mutex();
883	>	final ConditionObject c = sync.newCondition();
884	>	final BooleanLatch acquired1 = new BooleanLatch();
885	>	final BooleanLatch acquired2 = new BooleanLatch();
886	>	final Thread t1 = new Thread(new CheckedRunnable() {
887	>	public void realRun() throws InterruptedException {
888	>	sync.acquire();
889	>	assertHasWaitersLocked(sync, c, NO_THREADS);
890	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
891	>	assertTrue(acquired1.releaseShared(0));
892	>	c.await();
893	>	sync.release();
894	>	}});
895	>
896	>	final Thread t2 = new Thread(new CheckedRunnable() {
897	>	public void realRun() throws InterruptedException {
898	>	sync.acquire();
899	>	assertHasWaitersLocked(sync, c, t1);
900	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
901	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
902	>	assertEquals(1, sync.getWaitingThreads(c).size());
903	>	assertTrue(acquired2.releaseShared(0));
904	>	c.await();
905	>	sync.release();
906	>	}});
907	>
908	>	sync.acquire();
909	>	assertHasWaitersLocked(sync, c, NO_THREADS);
910	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
911	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
912	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
913	>	assertEquals(0, sync.getWaitingThreads(c).size());
914	>	sync.release();
915	>
916	>	t1.start();
917	>	acquired1.acquireShared(0);
918	>	sync.acquire();
919	>	assertHasWaitersLocked(sync, c, t1);
920	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
921	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
922	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
923	>	assertEquals(1, sync.getWaitingThreads(c).size());
924	>	sync.release();
925	>
926	>	t2.start();
927	>	acquired2.acquireShared(0);
928	>	sync.acquire();
929	>	assertHasWaitersLocked(sync, c, t1, t2);
930	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
931	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
932	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
933	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
934	>	assertEquals(2, sync.getWaitingThreads(c).size());
935	>	c.signalAll();
936	>	assertHasWaitersLocked(sync, c, NO_THREADS);
937	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
938	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
939	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
940	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
941	>	assertEquals(0, sync.getWaitingThreads(c).size());
942	>	sync.release();
943	>
944	>	awaitTermination(t1);
945	>	awaitTermination(t2);
946	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
947		}
948
932	–
933	–
949		/**
950	<	* awaitUninterruptibly doesn't abort on interrupt
950	>	* awaitUninterruptibly is uninterruptible
951		*/
952		public void testAwaitUninterruptibly() {
953	<	final Mutex sync = new Mutex();
954	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
955	<	Thread t = new Thread(new Runnable() {
956	<	public void run() {
957	<	sync.acquire(1);
958	<	c.awaitUninterruptibly();
959	<	sync.release(1);
960	<	}
961	<	});
962	<
963	<	try {
964	<	t.start();
965	<	Thread.sleep(SHORT_DELAY_MS);
966	<	t.interrupt();
967	<	sync.acquire(1);
968	<	c.signal();
969	<	sync.release(1);
970	<	t.join(SHORT_DELAY_MS);
971	<	assertFalse(t.isAlive());
972	<	}
973	<	catch (Exception ex) {
974	<	unexpectedException();
975	<	}
976	<	}
977	<
978	<	/**
979	<	* await is interruptible
980	<	*/
966	<	public void testAwait_Interrupt() {
967	<	final Mutex sync = new Mutex();
968	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
969	<	Thread t = new Thread(new Runnable() {
970	<	public void run() {
971	<	try {
972	<	sync.acquire(1);
973	<	c.await();
974	<	sync.release(1);
975	<	threadShouldThrow();
976	<	}
977	<	catch (InterruptedException success) {
978	<	}
979	<	}
980	<	});
981	<
982	<	try {
983	<	t.start();
984	<	Thread.sleep(SHORT_DELAY_MS);
985	<	t.interrupt();
986	<	t.join(SHORT_DELAY_MS);
987	<	assertFalse(t.isAlive());
988	<	}
989	<	catch (Exception ex) {
990	<	unexpectedException();
991	<	}
953	>	final Mutex sync = new Mutex();
954	>	final ConditionObject c = sync.newCondition();
955	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
956	>	Thread t = newStartedThread(new CheckedRunnable() {
957	>	public void realRun() {
958	>	sync.acquire();
959	>	assertTrue(pleaseInterrupt.releaseShared(0));
960	>	c.awaitUninterruptibly();
961	>	assertTrue(Thread.interrupted());
962	>	assertHasWaitersLocked(sync, c, NO_THREADS);
963	>	sync.release();
964	>	}});
965	>
966	>	pleaseInterrupt.acquireShared(0);
967	>	sync.acquire();
968	>	assertHasWaitersLocked(sync, c, t);
969	>	sync.release();
970	>	t.interrupt();
971	>	assertHasWaitersUnlocked(sync, c, t);
972	>	assertThreadStaysAlive(t);
973	>	sync.acquire();
974	>	assertHasWaitersLocked(sync, c, t);
975	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
976	>	c.signal();
977	>	assertHasWaitersLocked(sync, c, NO_THREADS);
978	>	assertHasExclusiveQueuedThreads(sync, t);
979	>	sync.release();
980	>	awaitTermination(t);
981		}
982
983		/**
984	<	* awaitNanos is interruptible
985	<	*/
986	<	public void testAwaitNanos_Interrupt() {
987	<	final Mutex sync = new Mutex();
988	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
989	<	Thread t = new Thread(new Runnable() {
990	<	public void run() {
991	<	try {
992	<	sync.acquire(1);
993	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
994	<	sync.release(1);
995	<	threadShouldThrow();
996	<	}
997	<	catch (InterruptedException success) {
998	<	}
999	<	}
1000	<	});
1001	<
1002	<	try {
1003	<	t.start();
1015	<	Thread.sleep(SHORT_DELAY_MS);
1016	<	t.interrupt();
1017	<	t.join(SHORT_DELAY_MS);
1018	<	assertFalse(t.isAlive());
1019	<	}
1020	<	catch (Exception ex) {
1021	<	unexpectedException();
1022	<	}
1023	<	}
1024	<
1025	<	/**
1026	<	* awaitUntil is interruptible
1027	<	*/
1028	<	public void testAwaitUntil_Interrupt() {
1029	<	final Mutex sync = new Mutex();
1030	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1031	<	Thread t = new Thread(new Runnable() {
1032	<	public void run() {
1033	<	try {
1034	<	sync.acquire(1);
1035	<	java.util.Date d = new java.util.Date();
1036	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1037	<	sync.release(1);
1038	<	threadShouldThrow();
1039	<	}
1040	<	catch (InterruptedException success) {
1041	<	}
1042	<	}
1043	<	});
1044	<
1045	<	try {
1046	<	t.start();
1047	<	Thread.sleep(SHORT_DELAY_MS);
1048	<	t.interrupt();
1049	<	t.join(SHORT_DELAY_MS);
1050	<	assertFalse(t.isAlive());
1051	<	}
1052	<	catch (Exception ex) {
1053	<	unexpectedException();
1054	<	}
984	>	* await/awaitNanos/awaitUntil is interruptible
985	>	*/
986	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
987	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
988	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
989	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
990	>	public void testInterruptible(final AwaitMethod awaitMethod) {
991	>	final Mutex sync = new Mutex();
992	>	final ConditionObject c = sync.newCondition();
993	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
994	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
995	>	public void realRun() throws InterruptedException {
996	>	sync.acquire();
997	>	assertTrue(pleaseInterrupt.releaseShared(0));
998	>	await(c, awaitMethod);
999	>	}});
1000	>
1001	>	pleaseInterrupt.acquireShared(0);
1002	>	t.interrupt();
1003	>	awaitTermination(t);
1004		}
1005
1006		/**
1007		* signalAll wakes up all threads
1008		*/
1009	<	public void testSignalAll() {
1010	<	final Mutex sync = new Mutex();
1011	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1012	<	Thread t1 = new Thread(new Runnable() {
1013	<	public void run() {
1014	<	try {
1015	<	sync.acquire(1);
1016	<	c.await();
1017	<	sync.release(1);
1018	<	}
1019	<	catch (InterruptedException e) {
1020	<	threadUnexpectedException();
1021	<	}
1022	<	}
1023	<	});
1024	<
1025	<	Thread t2 = new Thread(new Runnable() {
1026	<	public void run() {
1027	<	try {
1028	<	sync.acquire(1);
1029	<	c.await();
1030	<	sync.release(1);
1031	<	}
1032	<	catch (InterruptedException e) {
1033	<	threadUnexpectedException();
1034	<	}
1035	<	}
1036	<	});
1037	<
1038	<	try {
1039	<	t1.start();
1040	<	t2.start();
1041	<	Thread.sleep(SHORT_DELAY_MS);
1042	<	sync.acquire(1);
1043	<	c.signalAll();
1044	<	sync.release(1);
1096	<	t1.join(SHORT_DELAY_MS);
1097	<	t2.join(SHORT_DELAY_MS);
1098	<	assertFalse(t1.isAlive());
1099	<	assertFalse(t2.isAlive());
1100	<	}
1101	<	catch (Exception ex) {
1102	<	unexpectedException();
1103	<	}
1009	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1010	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1011	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1012	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1013	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1014	>	final Mutex sync = new Mutex();
1015	>	final ConditionObject c = sync.newCondition();
1016	>	final BooleanLatch acquired1 = new BooleanLatch();
1017	>	final BooleanLatch acquired2 = new BooleanLatch();
1018	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1019	>	public void realRun() throws InterruptedException {
1020	>	sync.acquire();
1021	>	acquired1.releaseShared(0);
1022	>	await(c, awaitMethod);
1023	>	sync.release();
1024	>	}});
1025	>
1026	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1027	>	public void realRun() throws InterruptedException {
1028	>	sync.acquire();
1029	>	acquired2.releaseShared(0);
1030	>	await(c, awaitMethod);
1031	>	sync.release();
1032	>	}});
1033	>
1034	>	acquired1.acquireShared(0);
1035	>	acquired2.acquireShared(0);
1036	>	sync.acquire();
1037	>	assertHasWaitersLocked(sync, c, t1, t2);
1038	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1039	>	c.signalAll();
1040	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1041	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1042	>	sync.release();
1043	>	awaitTermination(t1);
1044	>	awaitTermination(t2);
1045		}
1046
1106	–
1047		/**
1048		* toString indicates current state
1049		*/
1050		public void testToString() {
1051		Mutex sync = new Mutex();
1052	<	String us = sync.toString();
1053	<	assertTrue(us.indexOf("State = 0") >= 0);
1054	<	sync.acquire(1);
1115	<	String ls = sync.toString();
1116	<	assertTrue(ls.indexOf("State = 1") >= 0);
1052	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1053	>	sync.acquire();
1054	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1055		}
1056
1057		/**
1058	<	* A serialized AQS deserializes with current state
1058	>	* A serialized AQS deserializes with current state, but no queued threads
1059		*/
1060		public void testSerialization() {
1061	<	Mutex l = new Mutex();
1062	<	l.acquire(1);
1063	<	assertTrue(l.isHeldExclusively());
1064	<
1065	<	try {
1066	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1067	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1068	<	out.writeObject(l);
1069	<	out.close();
1070	<
1071	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1072	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1073	<	Mutex r = (Mutex) in.readObject();
1074	<	assertTrue(r.isHeldExclusively());
1075	<	} catch (Exception e){
1076	<	e.printStackTrace();
1077	<	unexpectedException();
1078	<	}
1061	>	Mutex sync = new Mutex();
1062	>	assertFalse(serialClone(sync).isHeldExclusively());
1063	>	sync.acquire();
1064	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1065	>	waitForQueuedThread(sync, t);
1066	>	assertTrue(sync.isHeldExclusively());
1067	>
1068	>	Mutex clone = serialClone(sync);
1069	>	assertTrue(clone.isHeldExclusively());
1070	>	assertHasExclusiveQueuedThreads(sync, t);
1071	>	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1072	>	t.interrupt();
1073	>	awaitTermination(t);
1074	>	sync.release();
1075	>	assertFalse(sync.isHeldExclusively());
1076	>	assertTrue(clone.isHeldExclusively());
1077	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1078	>	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1079		}
1080
1143	–
1081		/**
1082		* tryReleaseShared setting state changes getState
1083		*/
1084		public void testGetStateWithReleaseShared() {
1085	<	final BooleanLatch l = new BooleanLatch();
1086	<	assertFalse(l.isSignalled());
1087	<	l.releaseShared(0);
1088	<	assertTrue(l.isSignalled());
1085	>	final BooleanLatch l = new BooleanLatch();
1086	>	assertFalse(l.isSignalled());
1087	>	assertTrue(l.releaseShared(0));
1088	>	assertTrue(l.isSignalled());
1089		}
1090
1091		/**
1092		* releaseShared has no effect when already signalled
1093		*/
1094		public void testReleaseShared() {
1095	<	final BooleanLatch l = new BooleanLatch();
1096	<	assertFalse(l.isSignalled());
1097	<	l.releaseShared(0);
1098	<	assertTrue(l.isSignalled());
1099	<	l.releaseShared(0);
1100	<	assertTrue(l.isSignalled());
1095	>	final BooleanLatch l = new BooleanLatch();
1096	>	assertFalse(l.isSignalled());
1097	>	assertTrue(l.releaseShared(0));
1098	>	assertTrue(l.isSignalled());
1099	>	assertTrue(l.releaseShared(0));
1100	>	assertTrue(l.isSignalled());
1101		}
1102
1103		/**
1104		* acquireSharedInterruptibly returns after release, but not before
1105		*/
1106		public void testAcquireSharedInterruptibly() {
1107	<	final BooleanLatch l = new BooleanLatch();
1107	>	final BooleanLatch l = new BooleanLatch();
1108
1109	<	Thread t = new Thread(new Runnable() {
1110	<	public void run() {
1111	<	try {
1112	<	threadAssertFalse(l.isSignalled());
1113	<	l.acquireSharedInterruptibly(0);
1114	<	threadAssertTrue(l.isSignalled());
1115	<	} catch (InterruptedException e){
1116	<	threadUnexpectedException();
1117	<	}
1118	<	}
1119	<	});
1120	<	try {
1121	<	t.start();
1122	<	assertFalse(l.isSignalled());
1123	<	Thread.sleep(SHORT_DELAY_MS);
1124	<	l.releaseShared(0);
1188	<	assertTrue(l.isSignalled());
1189	<	t.join();
1190	<	} catch (InterruptedException e){
1191	<	unexpectedException();
1192	<	}
1109	>	Thread t = newStartedThread(new CheckedRunnable() {
1110	>	public void realRun() throws InterruptedException {
1111	>	assertFalse(l.isSignalled());
1112	>	l.acquireSharedInterruptibly(0);
1113	>	assertTrue(l.isSignalled());
1114	>	l.acquireSharedInterruptibly(0);
1115	>	assertTrue(l.isSignalled());
1116	>	}});
1117	>
1118	>	waitForQueuedThread(l, t);
1119	>	assertFalse(l.isSignalled());
1120	>	assertThreadStaysAlive(t);
1121	>	assertHasSharedQueuedThreads(l, t);
1122	>	assertTrue(l.releaseShared(0));
1123	>	assertTrue(l.isSignalled());
1124	>	awaitTermination(t);
1125		}
1126
1195	–
1127		/**
1128	<	* acquireSharedTimed returns after release
1128	>	* tryAcquireSharedNanos returns after release, but not before
1129		*/
1130	<	public void testAsquireSharedTimed() {
1131	<	final BooleanLatch l = new BooleanLatch();
1130	>	public void testTryAcquireSharedNanos() {
1131	>	final BooleanLatch l = new BooleanLatch();
1132
1133	<	Thread t = new Thread(new Runnable() {
1134	<	public void run() {
1135	<	try {
1136	<	threadAssertFalse(l.isSignalled());
1137	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1138	<	threadAssertTrue(l.isSignalled());
1139	<
1140	<	} catch (InterruptedException e){
1141	<	threadUnexpectedException();
1142	<	}
1143	<	}
1144	<	});
1145	<	try {
1146	<	t.start();
1147	<	assertFalse(l.isSignalled());
1148	<	Thread.sleep(SHORT_DELAY_MS);
1218	<	l.releaseShared(0);
1219	<	assertTrue(l.isSignalled());
1220	<	t.join();
1221	<	} catch (InterruptedException e){
1222	<	unexpectedException();
1223	<	}
1133	>	Thread t = newStartedThread(new CheckedRunnable() {
1134	>	public void realRun() throws InterruptedException {
1135	>	assertFalse(l.isSignalled());
1136	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1137	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1138	>	assertTrue(l.isSignalled());
1139	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1140	>	assertTrue(l.isSignalled());
1141	>	}});
1142	>
1143	>	waitForQueuedThread(l, t);
1144	>	assertFalse(l.isSignalled());
1145	>	assertThreadStaysAlive(t);
1146	>	assertTrue(l.releaseShared(0));
1147	>	assertTrue(l.isSignalled());
1148	>	awaitTermination(t);
1149		}
1150
1151		/**
1152	<	* acquireSharedInterruptibly throws IE if interrupted before released
1152	>	* acquireSharedInterruptibly is interruptible
1153		*/
1154	<	public void testAcquireSharedInterruptibly_InterruptedException() {
1154	>	public void testAcquireSharedInterruptibly_Interruptible() {
1155		final BooleanLatch l = new BooleanLatch();
1156	<	Thread t = new Thread(new Runnable() {
1157	<	public void run() {
1158	<	try {
1159	<	threadAssertFalse(l.isSignalled());
1160	<	l.acquireSharedInterruptibly(0);
1161	<	threadShouldThrow();
1162	<	} catch (InterruptedException success){}
1163	<	}
1164	<	});
1165	<	t.start();
1166	<	try {
1242	<	assertFalse(l.isSignalled());
1243	<	t.interrupt();
1244	<	t.join();
1245	<	} catch (InterruptedException e){
1246	<	unexpectedException();
1247	<	}
1156	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1157	>	public void realRun() throws InterruptedException {
1158	>	assertFalse(l.isSignalled());
1159	>	l.acquireSharedInterruptibly(0);
1160	>	}});
1161	>
1162	>	waitForQueuedThread(l, t);
1163	>	assertFalse(l.isSignalled());
1164	>	t.interrupt();
1165	>	awaitTermination(t);
1166	>	assertFalse(l.isSignalled());
1167		}
1168
1169		/**
1170	<	* acquireSharedTimed throws IE if interrupted before released
1170	>	* tryAcquireSharedNanos is interruptible
1171		*/
1172	<	public void testAcquireSharedNanos_InterruptedException() {
1172	>	public void testTryAcquireSharedNanos_Interruptible() {
1173		final BooleanLatch l = new BooleanLatch();
1174	<	Thread t = new Thread(new Runnable() {
1175	<	public void run() {
1176	<	try {
1177	<	threadAssertFalse(l.isSignalled());
1178	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1179	<	threadShouldThrow();
1180	<	} catch (InterruptedException success){}
1181	<	}
1182	<	});
1183	<	t.start();
1184	<	try {
1185	<	Thread.sleep(SHORT_DELAY_MS);
1267	<	assertFalse(l.isSignalled());
1268	<	t.interrupt();
1269	<	t.join();
1270	<	} catch (InterruptedException e){
1271	<	unexpectedException();
1272	<	}
1174	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1175	>	public void realRun() throws InterruptedException {
1176	>	assertFalse(l.isSignalled());
1177	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1178	>	l.tryAcquireSharedNanos(0, nanos);
1179	>	}});
1180	>
1181	>	waitForQueuedThread(l, t);
1182	>	assertFalse(l.isSignalled());
1183	>	t.interrupt();
1184	>	awaitTermination(t);
1185	>	assertFalse(l.isSignalled());
1186		}
1187
1188		/**
1189	<	* acquireSharedTimed times out if not released before timeout
1189	>	* tryAcquireSharedNanos times out if not released before timeout
1190		*/
1191	<	public void testAcquireSharedNanos_Timeout() {
1191	>	public void testTryAcquireSharedNanos_Timeout() {
1192		final BooleanLatch l = new BooleanLatch();
1193	<	Thread t = new Thread(new Runnable() {
1194	<	public void run() {
1195	<	try {
1196	<	threadAssertFalse(l.isSignalled());
1197	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1198	<	} catch (InterruptedException ie){
1199	<	threadUnexpectedException();
1200	<	}
1193	>	final BooleanLatch observedQueued = new BooleanLatch();
1194	>	final long timeoutMillis = timeoutMillis();
1195	>	Thread t = newStartedThread(new CheckedRunnable() {
1196	>	public void realRun() throws InterruptedException {
1197	>	assertFalse(l.isSignalled());
1198	>	for (long millis = timeoutMillis();
1199	>	!observedQueued.isSignalled();
1200	>	millis *= 2) {
1201	>	long nanos = MILLISECONDS.toNanos(millis);
1202	>	long startTime = System.nanoTime();
1203	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1204	>	assertTrue(millisElapsedSince(startTime) >= millis);
1205		}
1206	<	});
1207	<	t.start();
1291	<	try {
1292	<	Thread.sleep(SHORT_DELAY_MS);
1293	<	assertFalse(l.isSignalled());
1294	<	t.join();
1295	<	} catch (InterruptedException e){
1296	<	unexpectedException();
1297	<	}
1298	<	}
1206	>	assertFalse(l.isSignalled());
1207	>	}});
1208
1209	+	waitForQueuedThread(l, t);
1210	+	observedQueued.releaseShared(0);
1211	+	assertFalse(l.isSignalled());
1212	+	awaitTermination(t);
1213	+	assertFalse(l.isSignalled());
1214	+	}
1215
1216		}

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