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Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.8 by jsr166, Tue Nov 17 13:40:14 2009 UTC vs.
Revision 1.32 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.AbstractQueuedLongSynchronizer;
16	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject;
17	>
18	>	import junit.framework.AssertionFailedError;
19	>	import junit.framework.Test;
20	>	import junit.framework.TestSuite;
21
22		public class AbstractQueuedLongSynchronizerTest 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(AbstractQueuedLongSynchronizerTest.class);
28		}
29
30		/**
31	<	* A simple mutex class, adapted from the
32	<	* AbstractQueuedLongSynchronizer javadoc.  Exclusive acquire tests
27	<	* exercise this as a sample user extension.  Other
28	<	* methods/features of AbstractQueuedLongSynchronizerTest are tested
29	<	* 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.
33		*/
34		static class Mutex extends AbstractQueuedLongSynchronizer {
35	<	// Use value > 32 bits for locked state
36	<	static final long LOCKED = 1 << 48;
35	>	/** An eccentric value > 32 bits for locked synchronizer state. */
36	>	static final long LOCKED = (1L << 63) | (1L << 15);
37	>
38	>	static final long UNLOCKED = 0;
39	>
40		public boolean isHeldExclusively() {
41	<	return getState() == LOCKED;
41	>	long state = getState();
42	>	assertTrue(state == UNLOCKED || state == LOCKED);
43	>	return state == LOCKED;
44		}
45
46		public boolean tryAcquire(long acquires) {
47	<	return compareAndSetState(0, LOCKED);
47	>	assertEquals(LOCKED, acquires);
48	>	return compareAndSetState(UNLOCKED, LOCKED);
49		}
50
51		public boolean tryRelease(long releases) {
52	<	if (getState() == 0) throw new IllegalMonitorStateException();
53	<	setState(0);
52	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
53	>	setState(UNLOCKED);
54		return true;
55		}
56
57	<	public AbstractQueuedLongSynchronizer.ConditionObject newCondition() { return new AbstractQueuedLongSynchronizer.ConditionObject(); }
57	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
58	>	return tryAcquireNanos(LOCKED, nanos);
59	>	}
60
61	<	}
61	>	public boolean tryAcquire() {
62	>	return tryAcquire(LOCKED);
63	>	}
64	>
65	>	public boolean tryRelease() {
66	>	return tryRelease(LOCKED);
67	>	}
68
69	+	public void acquire() {
70	+	acquire(LOCKED);
71	+	}
72	+
73	+	public void acquireInterruptibly() throws InterruptedException {
74	+	acquireInterruptibly(LOCKED);
75	+	}
76	+
77	+	public void release() {
78	+	release(LOCKED);
79	+	}
80	+
81	+	public ConditionObject newCondition() {
82	+	return new ConditionObject();
83	+	}
84	+	}
85
86		/**
87		* A simple latch class, to test shared mode.
#	Line 58 | Line 90 | public class AbstractQueuedLongSynchroni
90		public boolean isSignalled() { return getState() != 0; }
91
92		public long tryAcquireShared(long ignore) {
93	<	return isSignalled()? 1 : -1;
93	>	return isSignalled() ? 1 : -1;
94		}
95
96		public boolean tryReleaseShared(long ignore) {
#	Line 68 | Line 100 | public class AbstractQueuedLongSynchroni
100		}
101
102		/**
103	<	* A runnable calling acquireInterruptibly
103	>	* A runnable calling acquireInterruptibly that does not expect to
104	>	* be interrupted.
105		*/
106	<	class InterruptibleSyncRunnable implements Runnable {
106	>	class InterruptibleSyncRunnable extends CheckedRunnable {
107		final Mutex sync;
108	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
109	<	public void run() {
110	<	try {
78	<	sync.acquireInterruptibly(1);
79	<	} catch (InterruptedException success) {}
108	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
109	>	public void realRun() throws InterruptedException {
110	>	sync.acquireInterruptibly();
111		}
112		}
113
83	–
114		/**
115		* A runnable calling acquireInterruptibly that expects to be
116	<	* interrupted
116	>	* interrupted.
117		*/
118	<	class InterruptedSyncRunnable implements Runnable {
118	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
119		final Mutex sync;
120	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
121	<	public void run() {
122	<	try {
123	<	sync.acquireInterruptibly(1);
124	<	threadShouldThrow();
125	<	} catch (InterruptedException success) {}
120	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
121	>	public void realRun() throws InterruptedException {
122	>	sync.acquireInterruptibly();
123	>	}
124	>	}
125	>
126	>	/** A constant to clarify calls to checking methods below. */
127	>	static final Thread[] NO_THREADS = new Thread[0];
128	>
129	>	/**
130	>	* Spin-waits until sync.isQueued(t) becomes true.
131	>	*/
132	>	void waitForQueuedThread(AbstractQueuedLongSynchronizer sync,
133	>	Thread t) {
134	>	long startTime = System.nanoTime();
135	>	while (!sync.isQueued(t)) {
136	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
137	>	throw new AssertionFailedError("timed out");
138	>	Thread.yield();
139	>	}
140	>	assertTrue(t.isAlive());
141	>	}
142	>
143	>	/**
144	>	* Checks that sync has exactly the given queued threads.
145	>	*/
146	>	void assertHasQueuedThreads(AbstractQueuedLongSynchronizer sync,
147	>	Thread... expected) {
148	>	Collection<Thread> actual = sync.getQueuedThreads();
149	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
150	>	assertEquals(expected.length, sync.getQueueLength());
151	>	assertEquals(expected.length, actual.size());
152	>	assertEquals(expected.length == 0, actual.isEmpty());
153	>	assertEquals(new HashSet<Thread>(actual),
154	>	new HashSet<Thread>(Arrays.asList(expected)));
155	>	}
156	>
157	>	/**
158	>	* Checks that sync has exactly the given (exclusive) queued threads.
159	>	*/
160	>	void assertHasExclusiveQueuedThreads(AbstractQueuedLongSynchronizer sync,
161	>	Thread... expected) {
162	>	assertHasQueuedThreads(sync, expected);
163	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
164	>	new HashSet<Thread>(sync.getQueuedThreads()));
165	>	assertEquals(0, sync.getSharedQueuedThreads().size());
166	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
167	>	}
168	>
169	>	/**
170	>	* Checks that sync has exactly the given (shared) queued threads.
171	>	*/
172	>	void assertHasSharedQueuedThreads(AbstractQueuedLongSynchronizer sync,
173	>	Thread... expected) {
174	>	assertHasQueuedThreads(sync, expected);
175	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
176	>	new HashSet<Thread>(sync.getQueuedThreads()));
177	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
178	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
179	>	}
180	>
181	>	/**
182	>	* Checks that condition c has exactly the given waiter threads,
183	>	* after acquiring mutex.
184	>	*/
185	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
186	>	Thread... threads) {
187	>	sync.acquire();
188	>	assertHasWaitersLocked(sync, c, threads);
189	>	sync.release();
190	>	}
191	>
192	>	/**
193	>	* Checks that condition c has exactly the given waiter threads.
194	>	*/
195	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
196	>	Thread... threads) {
197	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
198	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
199	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
200	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
201	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
202	>	new HashSet<Thread>(Arrays.asList(threads)));
203	>	}
204	>
205	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
206	>
207	>	/**
208	>	* Awaits condition using the specified AwaitMethod.
209	>	*/
210	>	void await(ConditionObject c, AwaitMethod awaitMethod)
211	>	throws InterruptedException {
212	>	long timeoutMillis = 2 * LONG_DELAY_MS;
213	>	switch (awaitMethod) {
214	>	case await:
215	>	c.await();
216	>	break;
217	>	case awaitTimed:
218	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
219	>	break;
220	>	case awaitNanos:
221	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
222	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
223	>	assertTrue(nanosRemaining > 0);
224	>	break;
225	>	case awaitUntil:
226	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
227	>	break;
228	>	default:
229	>	throw new AssertionError();
230		}
231		}
232
233		/**
234	+	* Checks that awaiting the given condition times out (using the
235	+	* default timeout duration).
236	+	*/
237	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
238	+	long timeoutMillis = timeoutMillis();
239	+	long startTime = System.nanoTime();
240	+	try {
241	+	switch (awaitMethod) {
242	+	case awaitTimed:
243	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
244	+	break;
245	+	case awaitNanos:
246	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
247	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
248	+	assertTrue(nanosRemaining <= 0);
249	+	break;
250	+	case awaitUntil:
251	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
252	+	break;
253	+	default:
254	+	throw new UnsupportedOperationException();
255	+	}
256	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
257	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
258	+	}
259	+
260	+	/**
261		* isHeldExclusively is false upon construction
262		*/
263		public void testIsHeldExclusively() {
264	<	Mutex rl = new Mutex();
265	<	assertFalse(rl.isHeldExclusively());
264	>	Mutex sync = new Mutex();
265	>	assertFalse(sync.isHeldExclusively());
266		}
267
268		/**
269		* acquiring released sync succeeds
270		*/
271		public void testAcquire() {
272	<	Mutex rl = new Mutex();
273	<	rl.acquire(1);
274	<	assertTrue(rl.isHeldExclusively());
275	<	rl.release(1);
276	<	assertFalse(rl.isHeldExclusively());
272	>	Mutex sync = new Mutex();
273	>	sync.acquire();
274	>	assertTrue(sync.isHeldExclusively());
275	>	sync.release();
276	>	assertFalse(sync.isHeldExclusively());
277		}
278
279		/**
280	<	* tryAcquire on an released sync succeeds
280	>	* tryAcquire on a released sync succeeds
281		*/
282		public void testTryAcquire() {
283	<	Mutex rl = new Mutex();
284	<	assertTrue(rl.tryAcquire(1));
285	<	assertTrue(rl.isHeldExclusively());
286	<	rl.release(1);
283	>	Mutex sync = new Mutex();
284	>	assertTrue(sync.tryAcquire());
285	>	assertTrue(sync.isHeldExclusively());
286	>	sync.release();
287	>	assertFalse(sync.isHeldExclusively());
288		}
289
290		/**
291		* hasQueuedThreads reports whether there are waiting threads
292		*/
293	<	public void testhasQueuedThreads() {
294	<	final Mutex sync = new Mutex();
295	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
296	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
297	<	try {
298	<	assertFalse(sync.hasQueuedThreads());
299	<	sync.acquire(1);
300	<	t1.start();
301	<	Thread.sleep(SHORT_DELAY_MS);
302	<	assertTrue(sync.hasQueuedThreads());
303	<	t2.start();
304	<	Thread.sleep(SHORT_DELAY_MS);
305	<	assertTrue(sync.hasQueuedThreads());
306	<	t1.interrupt();
307	<	Thread.sleep(SHORT_DELAY_MS);
308	<	assertTrue(sync.hasQueuedThreads());
147	<	sync.release(1);
148	<	Thread.sleep(SHORT_DELAY_MS);
149	<	assertFalse(sync.hasQueuedThreads());
150	<	t1.join();
151	<	t2.join();
152	<	} catch (Exception e) {
153	<	unexpectedException();
154	<	}
293	>	public void testHasQueuedThreads() {
294	>	final Mutex sync = new Mutex();
295	>	assertFalse(sync.hasQueuedThreads());
296	>	sync.acquire();
297	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
298	>	waitForQueuedThread(sync, t1);
299	>	assertTrue(sync.hasQueuedThreads());
300	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
301	>	waitForQueuedThread(sync, t2);
302	>	assertTrue(sync.hasQueuedThreads());
303	>	t1.interrupt();
304	>	awaitTermination(t1);
305	>	assertTrue(sync.hasQueuedThreads());
306	>	sync.release();
307	>	awaitTermination(t2);
308	>	assertFalse(sync.hasQueuedThreads());
309		}
310
311		/**
312	<	* isQueued(null) throws NPE
312	>	* isQueued(null) throws NullPointerException
313		*/
314		public void testIsQueuedNPE() {
315	<	final Mutex sync = new Mutex();
315	>	final Mutex sync = new Mutex();
316		try {
317		sync.isQueued(null);
318		shouldThrow();
319	<	} catch (NullPointerException success) {
166	<	}
319	>	} catch (NullPointerException success) {}
320		}
321
322		/**
323	<	* isQueued reports whether a thread is queued.
323	>	* isQueued reports whether a thread is queued
324		*/
325		public void testIsQueued() {
326	<	final Mutex sync = new Mutex();
326	>	final Mutex sync = new Mutex();
327		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
328		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
329	<	try {
330	<	assertFalse(sync.isQueued(t1));
331	<	assertFalse(sync.isQueued(t2));
332	<	sync.acquire(1);
333	<	t1.start();
334	<	Thread.sleep(SHORT_DELAY_MS);
335	<	assertTrue(sync.isQueued(t1));
336	<	t2.start();
337	<	Thread.sleep(SHORT_DELAY_MS);
338	<	assertTrue(sync.isQueued(t1));
339	<	assertTrue(sync.isQueued(t2));
340	<	t1.interrupt();
341	<	Thread.sleep(SHORT_DELAY_MS);
342	<	assertFalse(sync.isQueued(t1));
343	<	assertTrue(sync.isQueued(t2));
344	<	sync.release(1);
345	<	Thread.sleep(SHORT_DELAY_MS);
346	<	assertFalse(sync.isQueued(t1));
347	<	Thread.sleep(SHORT_DELAY_MS);
195	<	assertFalse(sync.isQueued(t2));
196	<	t1.join();
197	<	t2.join();
198	<	} catch (Exception e) {
199	<	unexpectedException();
200	<	}
329	>	assertFalse(sync.isQueued(t1));
330	>	assertFalse(sync.isQueued(t2));
331	>	sync.acquire();
332	>	t1.start();
333	>	waitForQueuedThread(sync, t1);
334	>	assertTrue(sync.isQueued(t1));
335	>	assertFalse(sync.isQueued(t2));
336	>	t2.start();
337	>	waitForQueuedThread(sync, t2);
338	>	assertTrue(sync.isQueued(t1));
339	>	assertTrue(sync.isQueued(t2));
340	>	t1.interrupt();
341	>	awaitTermination(t1);
342	>	assertFalse(sync.isQueued(t1));
343	>	assertTrue(sync.isQueued(t2));
344	>	sync.release();
345	>	awaitTermination(t2);
346	>	assertFalse(sync.isQueued(t1));
347	>	assertFalse(sync.isQueued(t2));
348		}
349
350		/**
351		* getFirstQueuedThread returns first waiting thread or null if none
352		*/
353		public void testGetFirstQueuedThread() {
354	<	final Mutex sync = new Mutex();
355	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
356	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
357	<	try {
358	<	assertNull(sync.getFirstQueuedThread());
359	<	sync.acquire(1);
360	<	t1.start();
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	assertEquals(t1, sync.getFirstQueuedThread());
363	<	t2.start();
364	<	Thread.sleep(SHORT_DELAY_MS);
365	<	assertEquals(t1, sync.getFirstQueuedThread());
366	<	t1.interrupt();
367	<	Thread.sleep(SHORT_DELAY_MS);
368	<	Thread.sleep(SHORT_DELAY_MS);
222	<	assertEquals(t2, sync.getFirstQueuedThread());
223	<	sync.release(1);
224	<	Thread.sleep(SHORT_DELAY_MS);
225	<	assertNull(sync.getFirstQueuedThread());
226	<	t1.join();
227	<	t2.join();
228	<	} catch (Exception e) {
229	<	unexpectedException();
230	<	}
354	>	final Mutex sync = new Mutex();
355	>	assertNull(sync.getFirstQueuedThread());
356	>	sync.acquire();
357	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
358	>	waitForQueuedThread(sync, t1);
359	>	assertEquals(t1, sync.getFirstQueuedThread());
360	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
361	>	waitForQueuedThread(sync, t2);
362	>	assertEquals(t1, sync.getFirstQueuedThread());
363	>	t1.interrupt();
364	>	awaitTermination(t1);
365	>	assertEquals(t2, sync.getFirstQueuedThread());
366	>	sync.release();
367	>	awaitTermination(t2);
368	>	assertNull(sync.getFirstQueuedThread());
369		}
370
233	–
371		/**
372		* hasContended reports false if no thread has ever blocked, else true
373		*/
374		public void testHasContended() {
375	<	final Mutex sync = new Mutex();
376	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
377	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
378	<	try {
379	<	assertFalse(sync.hasContended());
380	<	sync.acquire(1);
381	<	t1.start();
382	<	Thread.sleep(SHORT_DELAY_MS);
383	<	assertTrue(sync.hasContended());
384	<	t2.start();
385	<	Thread.sleep(SHORT_DELAY_MS);
386	<	assertTrue(sync.hasContended());
387	<	t1.interrupt();
388	<	Thread.sleep(SHORT_DELAY_MS);
389	<	assertTrue(sync.hasContended());
390	<	sync.release(1);
254	<	Thread.sleep(SHORT_DELAY_MS);
255	<	assertTrue(sync.hasContended());
256	<	t1.join();
257	<	t2.join();
258	<	} catch (Exception e) {
259	<	unexpectedException();
260	<	}
375	>	final Mutex sync = new Mutex();
376	>	assertFalse(sync.hasContended());
377	>	sync.acquire();
378	>	assertFalse(sync.hasContended());
379	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
380	>	waitForQueuedThread(sync, t1);
381	>	assertTrue(sync.hasContended());
382	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
383	>	waitForQueuedThread(sync, t2);
384	>	assertTrue(sync.hasContended());
385	>	t1.interrupt();
386	>	awaitTermination(t1);
387	>	assertTrue(sync.hasContended());
388	>	sync.release();
389	>	awaitTermination(t2);
390	>	assertTrue(sync.hasContended());
391		}
392
393		/**
394	<	* getQueuedThreads includes waiting threads
394	>	* getQueuedThreads returns all waiting threads
395		*/
396		public void testGetQueuedThreads() {
397	<	final Mutex sync = new Mutex();
397	>	final Mutex sync = new Mutex();
398		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
399		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
400	<	try {
401	<	assertTrue(sync.getQueuedThreads().isEmpty());
402	<	sync.acquire(1);
403	<	assertTrue(sync.getQueuedThreads().isEmpty());
404	<	t1.start();
405	<	Thread.sleep(SHORT_DELAY_MS);
406	<	assertTrue(sync.getQueuedThreads().contains(t1));
407	<	t2.start();
408	<	Thread.sleep(SHORT_DELAY_MS);
409	<	assertTrue(sync.getQueuedThreads().contains(t1));
410	<	assertTrue(sync.getQueuedThreads().contains(t2));
411	<	t1.interrupt();
412	<	Thread.sleep(SHORT_DELAY_MS);
413	<	assertFalse(sync.getQueuedThreads().contains(t1));
414	<	assertTrue(sync.getQueuedThreads().contains(t2));
415	<	sync.release(1);
416	<	Thread.sleep(SHORT_DELAY_MS);
417	<	assertTrue(sync.getQueuedThreads().isEmpty());
418	<	t1.join();
289	<	t2.join();
290	<	} catch (Exception e) {
291	<	unexpectedException();
292	<	}
400	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
401	>	sync.acquire();
402	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
403	>	t1.start();
404	>	waitForQueuedThread(sync, t1);
405	>	assertHasExclusiveQueuedThreads(sync, t1);
406	>	assertTrue(sync.getQueuedThreads().contains(t1));
407	>	assertFalse(sync.getQueuedThreads().contains(t2));
408	>	t2.start();
409	>	waitForQueuedThread(sync, t2);
410	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
411	>	assertTrue(sync.getQueuedThreads().contains(t1));
412	>	assertTrue(sync.getQueuedThreads().contains(t2));
413	>	t1.interrupt();
414	>	awaitTermination(t1);
415	>	assertHasExclusiveQueuedThreads(sync, t2);
416	>	sync.release();
417	>	awaitTermination(t2);
418	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
419		}
420
421		/**
422	<	* getExclusiveQueuedThreads includes waiting threads
422	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
423		*/
424		public void testGetExclusiveQueuedThreads() {
425	<	final Mutex sync = new Mutex();
425	>	final Mutex sync = new Mutex();
426		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
427		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
428	<	try {
429	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
430	<	sync.acquire(1);
431	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
432	<	t1.start();
433	<	Thread.sleep(SHORT_DELAY_MS);
434	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
435	<	t2.start();
436	<	Thread.sleep(SHORT_DELAY_MS);
437	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
438	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
439	<	t1.interrupt();
440	<	Thread.sleep(SHORT_DELAY_MS);
441	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
442	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
443	<	sync.release(1);
444	<	Thread.sleep(SHORT_DELAY_MS);
445	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
446	<	t1.join();
321	<	t2.join();
322	<	} catch (Exception e) {
323	<	unexpectedException();
324	<	}
428	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
429	>	sync.acquire();
430	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
431	>	t1.start();
432	>	waitForQueuedThread(sync, t1);
433	>	assertHasExclusiveQueuedThreads(sync, t1);
434	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
435	>	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
436	>	t2.start();
437	>	waitForQueuedThread(sync, t2);
438	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
439	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
440	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
441	>	t1.interrupt();
442	>	awaitTermination(t1);
443	>	assertHasExclusiveQueuedThreads(sync, t2);
444	>	sync.release();
445	>	awaitTermination(t2);
446	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
447		}
448
449		/**
450		* getSharedQueuedThreads does not include exclusively waiting threads
451		*/
452	<	public void testGetSharedQueuedThreads() {
453	<	final Mutex sync = new Mutex();
454	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
455	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
456	<	try {
457	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
458	<	sync.acquire(1);
459	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
460	<	t1.start();
461	<	Thread.sleep(SHORT_DELAY_MS);
462	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
463	<	t2.start();
464	<	Thread.sleep(SHORT_DELAY_MS);
465	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
466	<	t1.interrupt();
467	<	Thread.sleep(SHORT_DELAY_MS);
468	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
347	<	sync.release(1);
348	<	Thread.sleep(SHORT_DELAY_MS);
349	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
350	<	t1.join();
351	<	t2.join();
352	<	} catch (Exception e) {
353	<	unexpectedException();
354	<	}
452	>	public void testGetSharedQueuedThreads_Exclusive() {
453	>	final Mutex sync = new Mutex();
454	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
455	>	sync.acquire();
456	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
457	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
458	>	waitForQueuedThread(sync, t1);
459	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
460	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
461	>	waitForQueuedThread(sync, t2);
462	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
463	>	t1.interrupt();
464	>	awaitTermination(t1);
465	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
466	>	sync.release();
467	>	awaitTermination(t2);
468	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
469		}
470
471		/**
472	<	* tryAcquireNanos is interruptible.
472	>	* getSharedQueuedThreads returns all shared waiting threads
473		*/
474	<	public void testInterruptedException2() {
475	<	final Mutex sync = new Mutex();
476	<	sync.acquire(1);
477	<	Thread t = new Thread(new Runnable() {
478	<	public void run() {
479	<	try {
480	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
481	<	threadShouldThrow();
482	<	} catch (InterruptedException success) {}
483	<	}
484	<	});
485	<	try {
486	<	t.start();
487	<	t.interrupt();
488	<	} catch (Exception e) {
489	<	unexpectedException();
490	<	}
474	>	public void testGetSharedQueuedThreads_Shared() {
475	>	final BooleanLatch l = new BooleanLatch();
476	>	assertHasSharedQueuedThreads(l, NO_THREADS);
477	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
478	>	public void realRun() throws InterruptedException {
479	>	l.acquireSharedInterruptibly(0);
480	>	}});
481	>	waitForQueuedThread(l, t1);
482	>	assertHasSharedQueuedThreads(l, t1);
483	>	Thread t2 = newStartedThread(new CheckedRunnable() {
484	>	public void realRun() throws InterruptedException {
485	>	l.acquireSharedInterruptibly(0);
486	>	}});
487	>	waitForQueuedThread(l, t2);
488	>	assertHasSharedQueuedThreads(l, t1, t2);
489	>	t1.interrupt();
490	>	awaitTermination(t1);
491	>	assertHasSharedQueuedThreads(l, t2);
492	>	assertTrue(l.releaseShared(0));
493	>	awaitTermination(t2);
494	>	assertHasSharedQueuedThreads(l, NO_THREADS);
495		}
496
497	+	/**
498	+	* tryAcquireNanos is interruptible
499	+	*/
500	+	public void testTryAcquireNanos_Interruptible() {
501	+	final Mutex sync = new Mutex();
502	+	sync.acquire();
503	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
504	+	public void realRun() throws InterruptedException {
505	+	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
506	+	}});
507	+
508	+	waitForQueuedThread(sync, t);
509	+	t.interrupt();
510	+	awaitTermination(t);
511	+	}
512
513		/**
514	<	* TryAcquire on exclusively held sync fails
514	>	* tryAcquire on exclusively held sync fails
515		*/
516		public void testTryAcquireWhenSynced() {
517	<	final Mutex sync = new Mutex();
518	<	sync.acquire(1);
519	<	Thread t = new Thread(new Runnable() {
520	<	public void run() {
521	<	threadAssertFalse(sync.tryAcquire(1));
522	<	}
523	<	});
524	<	try {
525	<	t.start();
393	<	t.join();
394	<	sync.release(1);
395	<	} catch (Exception e) {
396	<	unexpectedException();
397	<	}
517	>	final Mutex sync = new Mutex();
518	>	sync.acquire();
519	>	Thread t = newStartedThread(new CheckedRunnable() {
520	>	public void realRun() {
521	>	assertFalse(sync.tryAcquire());
522	>	}});
523	>
524	>	awaitTermination(t);
525	>	sync.release();
526		}
527
528		/**
529		* tryAcquireNanos on an exclusively held sync times out
530		*/
531		public void testAcquireNanos_Timeout() {
532	<	final Mutex sync = new Mutex();
533	<	sync.acquire(1);
534	<	Thread t = new Thread(new Runnable() {
535	<	public void run() {
536	<	try {
537	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
538	<	} catch (Exception ex) {
539	<	threadUnexpectedException(ex);
540	<	}
413	<	}
414	<	});
415	<	try {
416	<	t.start();
417	<	t.join();
418	<	sync.release(1);
419	<	} catch (Exception e) {
420	<	unexpectedException();
421	<	}
422	<	}
532	>	final Mutex sync = new Mutex();
533	>	sync.acquire();
534	>	Thread t = newStartedThread(new CheckedRunnable() {
535	>	public void realRun() throws InterruptedException {
536	>	long startTime = System.nanoTime();
537	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
538	>	assertFalse(sync.tryAcquireNanos(nanos));
539	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
540	>	}});
541
542	+	awaitTermination(t);
543	+	sync.release();
544	+	}
545
546		/**
547		* getState is true when acquired and false when not
548		*/
549		public void testGetState() {
550	<	final Mutex sync = new Mutex();
551	<	sync.acquire(1);
552	<	assertTrue(sync.isHeldExclusively());
553	<	sync.release(1);
554	<	assertFalse(sync.isHeldExclusively());
555	<	Thread t = new Thread(new Runnable() {
556	<	public void run() {
557	<	sync.acquire(1);
558	<	try {
559	<	Thread.sleep(SMALL_DELAY_MS);
560	<	}
561	<	catch (Exception e) {
562	<	threadUnexpectedException(e);
563	<	}
564	<	sync.release(1);
565	<	}
566	<	});
567	<	try {
568	<	t.start();
569	<	Thread.sleep(SHORT_DELAY_MS);
570	<	assertTrue(sync.isHeldExclusively());
450	<	t.join();
451	<	assertFalse(sync.isHeldExclusively());
452	<	} catch (Exception e) {
453	<	unexpectedException();
454	<	}
455	<	}
456	<
457	<
458	<	/**
459	<	* acquireInterruptibly is interruptible.
460	<	*/
461	<	public void testAcquireInterruptibly1() {
462	<	final Mutex sync = new Mutex();
463	<	sync.acquire(1);
464	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
465	<	try {
466	<	t.start();
467	<	Thread.sleep(SHORT_DELAY_MS);
468	<	t.interrupt();
469	<	Thread.sleep(SHORT_DELAY_MS);
470	<	sync.release(1);
471	<	t.join();
472	<	} catch (Exception e) {
473	<	unexpectedException();
474	<	}
550	>	final Mutex sync = new Mutex();
551	>	sync.acquire();
552	>	assertTrue(sync.isHeldExclusively());
553	>	sync.release();
554	>	assertFalse(sync.isHeldExclusively());
555	>
556	>	final BooleanLatch acquired = new BooleanLatch();
557	>	final BooleanLatch done = new BooleanLatch();
558	>	Thread t = newStartedThread(new CheckedRunnable() {
559	>	public void realRun() throws InterruptedException {
560	>	sync.acquire();
561	>	assertTrue(acquired.releaseShared(0));
562	>	done.acquireShared(0);
563	>	sync.release();
564	>	}});
565	>
566	>	acquired.acquireShared(0);
567	>	assertTrue(sync.isHeldExclusively());
568	>	assertTrue(done.releaseShared(0));
569	>	awaitTermination(t);
570	>	assertFalse(sync.isHeldExclusively());
571		}
572
573		/**
574		* acquireInterruptibly succeeds when released, else is interruptible
575		*/
576	<	public void testAcquireInterruptibly2() {
577	<	final Mutex sync = new Mutex();
578	<	try {
579	<	sync.acquireInterruptibly(1);
580	<	} catch (Exception e) {
581	<	unexpectedException();
582	<	}
583	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
584	<	try {
585	<	t.start();
586	<	t.interrupt();
587	<	assertTrue(sync.isHeldExclusively());
588	<	t.join();
589	<	} catch (Exception e) {
590	<	unexpectedException();
495	<	}
576	>	public void testAcquireInterruptibly() throws InterruptedException {
577	>	final Mutex sync = new Mutex();
578	>	final BooleanLatch threadStarted = new BooleanLatch();
579	>	sync.acquireInterruptibly();
580	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
581	>	public void realRun() throws InterruptedException {
582	>	assertTrue(threadStarted.releaseShared(0));
583	>	sync.acquireInterruptibly();
584	>	}});
585	>
586	>	threadStarted.acquireShared(0);
587	>	waitForQueuedThread(sync, t);
588	>	t.interrupt();
589	>	awaitTermination(t);
590	>	assertTrue(sync.isHeldExclusively());
591		}
592
593		/**
594		* owns is true for a condition created by sync else false
595		*/
596		public void testOwns() {
597	<	final Mutex sync = new Mutex();
598	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
597	>	final Mutex sync = new Mutex();
598	>	final ConditionObject c = sync.newCondition();
599		final Mutex sync2 = new Mutex();
600		assertTrue(sync.owns(c));
601		assertFalse(sync2.owns(c));
#	Line 509 | Line 604 | public class AbstractQueuedLongSynchroni
604		/**
605		* Calling await without holding sync throws IllegalMonitorStateException
606		*/
607	<	public void testAwait_IllegalMonitor() {
608	<	final Mutex sync = new Mutex();
609	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
610	<	try {
611	<	c.await();
612	<	shouldThrow();
613	<	}
614	<	catch (IllegalMonitorStateException success) {
615	<	}
616	<	catch (Exception ex) {
617	<	unexpectedException();
607	>	public void testAwait_IMSE() {
608	>	final Mutex sync = new Mutex();
609	>	final ConditionObject c = sync.newCondition();
610	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
611	>	long startTime = System.nanoTime();
612	>	try {
613	>	await(c, awaitMethod);
614	>	shouldThrow();
615	>	} catch (IllegalMonitorStateException success) {
616	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
617	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
618		}
619		}
620
621		/**
622		* Calling signal without holding sync throws IllegalMonitorStateException
623		*/
624	<	public void testSignal_IllegalMonitor() {
625	<	final Mutex sync = new Mutex();
626	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
624	>	public void testSignal_IMSE() {
625	>	final Mutex sync = new Mutex();
626	>	final ConditionObject c = sync.newCondition();
627		try {
628		c.signal();
629		shouldThrow();
630	<	}
631	<	catch (IllegalMonitorStateException success) {
537	<	}
538	<	catch (Exception ex) {
539	<	unexpectedException();
540	<	}
541	<	}
542	<
543	<	/**
544	<	* awaitNanos without a signal times out
545	<	*/
546	<	public void testAwaitNanos_Timeout() {
547	<	final Mutex sync = new Mutex();
548	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
549	<	try {
550	<	sync.acquire(1);
551	<	long t = c.awaitNanos(100);
552	<	assertTrue(t <= 0);
553	<	sync.release(1);
554	<	}
555	<	catch (Exception ex) {
556	<	unexpectedException();
557	<	}
630	>	} catch (IllegalMonitorStateException success) {}
631	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
632		}
633
634		/**
635	<	*  Timed await without a signal times out
635	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
636		*/
637	<	public void testAwait_Timeout() {
638	<	final Mutex sync = new Mutex();
639	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
637	>	public void testSignalAll_IMSE() {
638	>	final Mutex sync = new Mutex();
639	>	final ConditionObject c = sync.newCondition();
640		try {
641	<	sync.acquire(1);
642	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
643	<	sync.release(1);
570	<	}
571	<	catch (Exception ex) {
572	<	unexpectedException();
573	<	}
641	>	c.signalAll();
642	>	shouldThrow();
643	>	} catch (IllegalMonitorStateException success) {}
644		}
645
646		/**
647	<	* awaitUntil without a signal times out
647	>	* await/awaitNanos/awaitUntil without a signal times out
648		*/
649	<	public void testAwaitUntil_Timeout() {
650	<	final Mutex sync = new Mutex();
651	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
652	<	try {
653	<	sync.acquire(1);
654	<	java.util.Date d = new java.util.Date();
655	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
656	<	sync.release(1);
657	<	}
588	<	catch (Exception ex) {
589	<	unexpectedException();
590	<	}
649	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
650	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
651	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
652	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
653	>	final Mutex sync = new Mutex();
654	>	final ConditionObject c = sync.newCondition();
655	>	sync.acquire();
656	>	assertAwaitTimesOut(c, awaitMethod);
657	>	sync.release();
658		}
659
660		/**
661	<	* await returns when signalled
662	<	*/
663	<	public void testAwait() {
664	<	final Mutex sync = new Mutex();
665	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
666	<	Thread t = new Thread(new Runnable() {
667	<	public void run() {
668	<	try {
669	<	sync.acquire(1);
670	<	c.await();
671	<	sync.release(1);
672	<	}
673	<	catch (InterruptedException e) {
674	<	threadUnexpectedException(e);
675	<	}
676	<	}
677	<	});
678	<
679	<	try {
680	<	t.start();
681	<	Thread.sleep(SHORT_DELAY_MS);
682	<	sync.acquire(1);
683	<	c.signal();
684	<	sync.release(1);
685	<	t.join(SHORT_DELAY_MS);
686	<	assertFalse(t.isAlive());
687	<	}
621	<	catch (Exception ex) {
622	<	unexpectedException();
623	<	}
661	>	* await/awaitNanos/awaitUntil returns when signalled
662	>	*/
663	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
664	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
665	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
666	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
667	>	public void testSignal(final AwaitMethod awaitMethod) {
668	>	final Mutex sync = new Mutex();
669	>	final ConditionObject c = sync.newCondition();
670	>	final BooleanLatch acquired = new BooleanLatch();
671	>	Thread t = newStartedThread(new CheckedRunnable() {
672	>	public void realRun() throws InterruptedException {
673	>	sync.acquire();
674	>	assertTrue(acquired.releaseShared(0));
675	>	await(c, awaitMethod);
676	>	sync.release();
677	>	}});
678	>
679	>	acquired.acquireShared(0);
680	>	sync.acquire();
681	>	assertHasWaitersLocked(sync, c, t);
682	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
683	>	c.signal();
684	>	assertHasWaitersLocked(sync, c, NO_THREADS);
685	>	assertHasExclusiveQueuedThreads(sync, t);
686	>	sync.release();
687	>	awaitTermination(t);
688		}
689
626	–
627	–
690		/**
691	<	* hasWaiters throws NPE if null
691	>	* hasWaiters(null) throws NullPointerException
692		*/
693		public void testHasWaitersNPE() {
694	<	final Mutex sync = new Mutex();
694	>	final Mutex sync = new Mutex();
695		try {
696		sync.hasWaiters(null);
697		shouldThrow();
698	<	} catch (NullPointerException success) {
637	<	} catch (Exception ex) {
638	<	unexpectedException();
639	<	}
698	>	} catch (NullPointerException success) {}
699		}
700
701		/**
702	<	* getWaitQueueLength throws NPE if null
702	>	* getWaitQueueLength(null) throws NullPointerException
703		*/
704		public void testGetWaitQueueLengthNPE() {
705	<	final Mutex sync = new Mutex();
705	>	final Mutex sync = new Mutex();
706		try {
707		sync.getWaitQueueLength(null);
708		shouldThrow();
709	<	} catch (NullPointerException success) {
651	<	} catch (Exception ex) {
652	<	unexpectedException();
653	<	}
709	>	} catch (NullPointerException success) {}
710		}
711
656	–
712		/**
713		* getWaitingThreads throws NPE if null
714		*/
715		public void testGetWaitingThreadsNPE() {
716	<	final Mutex sync = new Mutex();
716	>	final Mutex sync = new Mutex();
717		try {
718		sync.getWaitingThreads(null);
719		shouldThrow();
720	<	} catch (NullPointerException success) {
666	<	} catch (Exception ex) {
667	<	unexpectedException();
668	<	}
720	>	} catch (NullPointerException success) {}
721		}
722
671	–
723		/**
724	<	* hasWaiters throws IAE if not owned
724	>	* hasWaiters throws IllegalArgumentException if not owned
725		*/
726		public void testHasWaitersIAE() {
727	<	final Mutex sync = new Mutex();
728	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
729	<	final Mutex sync2 = new Mutex();
727	>	final Mutex sync = new Mutex();
728	>	final ConditionObject c = sync.newCondition();
729	>	final Mutex sync2 = new Mutex();
730		try {
731		sync2.hasWaiters(c);
732		shouldThrow();
733	<	} catch (IllegalArgumentException success) {
734	<	} catch (Exception ex) {
684	<	unexpectedException();
685	<	}
733	>	} catch (IllegalArgumentException success) {}
734	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
735		}
736
737		/**
738	<	* hasWaiters throws IMSE if not synced
738	>	* hasWaiters throws IllegalMonitorStateException if not synced
739		*/
740		public void testHasWaitersIMSE() {
741	<	final Mutex sync = new Mutex();
742	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
741	>	final Mutex sync = new Mutex();
742	>	final ConditionObject c = sync.newCondition();
743		try {
744		sync.hasWaiters(c);
745		shouldThrow();
746	<	} catch (IllegalMonitorStateException success) {
747	<	} catch (Exception ex) {
699	<	unexpectedException();
700	<	}
746	>	} catch (IllegalMonitorStateException success) {}
747	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
748		}
749
703	–
750		/**
751	<	* getWaitQueueLength throws IAE if not owned
751	>	* getWaitQueueLength throws IllegalArgumentException if not owned
752		*/
753		public void testGetWaitQueueLengthIAE() {
754	<	final Mutex sync = new Mutex();
755	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
756	<	final Mutex sync2 = new Mutex();
754	>	final Mutex sync = new Mutex();
755	>	final ConditionObject c = sync.newCondition();
756	>	final Mutex sync2 = new Mutex();
757		try {
758		sync2.getWaitQueueLength(c);
759		shouldThrow();
760	<	} catch (IllegalArgumentException success) {
761	<	} catch (Exception ex) {
716	<	unexpectedException();
717	<	}
760	>	} catch (IllegalArgumentException success) {}
761	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
762		}
763
764		/**
765	<	* getWaitQueueLength throws IMSE if not synced
765	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
766		*/
767		public void testGetWaitQueueLengthIMSE() {
768	<	final Mutex sync = new Mutex();
769	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
768	>	final Mutex sync = new Mutex();
769	>	final ConditionObject c = sync.newCondition();
770		try {
771		sync.getWaitQueueLength(c);
772		shouldThrow();
773	<	} catch (IllegalMonitorStateException success) {
774	<	} catch (Exception ex) {
731	<	unexpectedException();
732	<	}
773	>	} catch (IllegalMonitorStateException success) {}
774	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
775		}
776
735	–
777		/**
778	<	* getWaitingThreads throws IAE if not owned
778	>	* getWaitingThreads throws IllegalArgumentException if not owned
779		*/
780		public void testGetWaitingThreadsIAE() {
781	<	final Mutex sync = new Mutex();
782	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
783	<	final Mutex sync2 = new Mutex();
781	>	final Mutex sync = new Mutex();
782	>	final ConditionObject c = sync.newCondition();
783	>	final Mutex sync2 = new Mutex();
784		try {
785		sync2.getWaitingThreads(c);
786		shouldThrow();
787	<	} catch (IllegalArgumentException success) {
788	<	} catch (Exception ex) {
748	<	unexpectedException();
749	<	}
787	>	} catch (IllegalArgumentException success) {}
788	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
789		}
790
791		/**
792	<	* getWaitingThreads throws IMSE if not synced
792	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
793		*/
794		public void testGetWaitingThreadsIMSE() {
795	<	final Mutex sync = new Mutex();
796	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
795	>	final Mutex sync = new Mutex();
796	>	final ConditionObject c = sync.newCondition();
797		try {
798		sync.getWaitingThreads(c);
799		shouldThrow();
800	<	} catch (IllegalMonitorStateException success) {
801	<	} catch (Exception ex) {
763	<	unexpectedException();
764	<	}
800	>	} catch (IllegalMonitorStateException success) {}
801	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
802		}
803
767	–
768	–
804		/**
805		* hasWaiters returns true when a thread is waiting, else false
806		*/
807		public void testHasWaiters() {
808	<	final Mutex sync = new Mutex();
809	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
810	<	Thread t = new Thread(new Runnable() {
811	<	public void run() {
812	<	try {
813	<	sync.acquire(1);
814	<	threadAssertFalse(sync.hasWaiters(c));
815	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
816	<	c.await();
817	<	sync.release(1);
818	<	}
819	<	catch (InterruptedException e) {
820	<	threadUnexpectedException(e);
821	<	}
822	<	}
823	<	});
808	>	final Mutex sync = new Mutex();
809	>	final ConditionObject c = sync.newCondition();
810	>	final BooleanLatch acquired = new BooleanLatch();
811	>	Thread t = newStartedThread(new CheckedRunnable() {
812	>	public void realRun() throws InterruptedException {
813	>	sync.acquire();
814	>	assertHasWaitersLocked(sync, c, NO_THREADS);
815	>	assertFalse(sync.hasWaiters(c));
816	>	assertTrue(acquired.releaseShared(0));
817	>	c.await();
818	>	sync.release();
819	>	}});
820	>
821	>	acquired.acquireShared(0);
822	>	sync.acquire();
823	>	assertHasWaitersLocked(sync, c, t);
824	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
825	>	assertTrue(sync.hasWaiters(c));
826	>	c.signal();
827	>	assertHasWaitersLocked(sync, c, NO_THREADS);
828	>	assertHasExclusiveQueuedThreads(sync, t);
829	>	assertFalse(sync.hasWaiters(c));
830	>	sync.release();
831
832	<	try {
833	<	t.start();
792	<	Thread.sleep(SHORT_DELAY_MS);
793	<	sync.acquire(1);
794	<	assertTrue(sync.hasWaiters(c));
795	<	assertEquals(1, sync.getWaitQueueLength(c));
796	<	c.signal();
797	<	sync.release(1);
798	<	Thread.sleep(SHORT_DELAY_MS);
799	<	sync.acquire(1);
800	<	assertFalse(sync.hasWaiters(c));
801	<	assertEquals(0, sync.getWaitQueueLength(c));
802	<	sync.release(1);
803	<	t.join(SHORT_DELAY_MS);
804	<	assertFalse(t.isAlive());
805	<	}
806	<	catch (Exception ex) {
807	<	unexpectedException();
808	<	}
832	>	awaitTermination(t);
833	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
834		}
835
836		/**
837		* getWaitQueueLength returns number of waiting threads
838		*/
839		public void testGetWaitQueueLength() {
840	<	final Mutex sync = new Mutex();
841	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
842	<	Thread t1 = new Thread(new Runnable() {
843	<	public void run() {
844	<	try {
845	<	sync.acquire(1);
846	<	threadAssertFalse(sync.hasWaiters(c));
847	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
848	<	c.await();
849	<	sync.release(1);
850	<	}
851	<	catch (InterruptedException e) {
852	<	threadUnexpectedException(e);
853	<	}
854	<	}
855	<	});
856	<
857	<	Thread t2 = new Thread(new Runnable() {
858	<	public void run() {
859	<	try {
860	<	sync.acquire(1);
861	<	threadAssertTrue(sync.hasWaiters(c));
862	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
863	<	c.await();
864	<	sync.release(1);
865	<	}
866	<	catch (InterruptedException e) {
867	<	threadUnexpectedException(e);
868	<	}
869	<	}
870	<	});
871	<
872	<	try {
873	<	t1.start();
874	<	Thread.sleep(SHORT_DELAY_MS);
875	<	t2.start();
876	<	Thread.sleep(SHORT_DELAY_MS);
877	<	sync.acquire(1);
878	<	assertTrue(sync.hasWaiters(c));
879	<	assertEquals(2, sync.getWaitQueueLength(c));
880	<	c.signalAll();
881	<	sync.release(1);
857	<	Thread.sleep(SHORT_DELAY_MS);
858	<	sync.acquire(1);
859	<	assertFalse(sync.hasWaiters(c));
860	<	assertEquals(0, sync.getWaitQueueLength(c));
861	<	sync.release(1);
862	<	t1.join(SHORT_DELAY_MS);
863	<	t2.join(SHORT_DELAY_MS);
864	<	assertFalse(t1.isAlive());
865	<	assertFalse(t2.isAlive());
866	<	}
867	<	catch (Exception ex) {
868	<	unexpectedException();
869	<	}
840	>	final Mutex sync = new Mutex();
841	>	final ConditionObject c = sync.newCondition();
842	>	final BooleanLatch acquired1 = new BooleanLatch();
843	>	final BooleanLatch acquired2 = new BooleanLatch();
844	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
845	>	public void realRun() throws InterruptedException {
846	>	sync.acquire();
847	>	assertHasWaitersLocked(sync, c, NO_THREADS);
848	>	assertEquals(0, sync.getWaitQueueLength(c));
849	>	assertTrue(acquired1.releaseShared(0));
850	>	c.await();
851	>	sync.release();
852	>	}});
853	>	acquired1.acquireShared(0);
854	>	sync.acquire();
855	>	assertHasWaitersLocked(sync, c, t1);
856	>	assertEquals(1, sync.getWaitQueueLength(c));
857	>	sync.release();
858	>
859	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
860	>	public void realRun() throws InterruptedException {
861	>	sync.acquire();
862	>	assertHasWaitersLocked(sync, c, t1);
863	>	assertEquals(1, sync.getWaitQueueLength(c));
864	>	assertTrue(acquired2.releaseShared(0));
865	>	c.await();
866	>	sync.release();
867	>	}});
868	>	acquired2.acquireShared(0);
869	>	sync.acquire();
870	>	assertHasWaitersLocked(sync, c, t1, t2);
871	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
872	>	assertEquals(2, sync.getWaitQueueLength(c));
873	>	c.signalAll();
874	>	assertHasWaitersLocked(sync, c, NO_THREADS);
875	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
876	>	assertEquals(0, sync.getWaitQueueLength(c));
877	>	sync.release();
878	>
879	>	awaitTermination(t1);
880	>	awaitTermination(t2);
881	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
882		}
883
884		/**
885		* getWaitingThreads returns only and all waiting threads
886		*/
887		public void testGetWaitingThreads() {
888	<	final Mutex sync = new Mutex();
889	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
890	<	Thread t1 = new Thread(new Runnable() {
891	<	public void run() {
892	<	try {
893	<	sync.acquire(1);
894	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
895	<	c.await();
896	<	sync.release(1);
897	<	}
898	<	catch (InterruptedException e) {
899	<	threadUnexpectedException(e);
900	<	}
901	<	}
902	<	});
903	<
904	<	Thread t2 = new Thread(new Runnable() {
905	<	public void run() {
906	<	try {
907	<	sync.acquire(1);
908	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
909	<	c.await();
910	<	sync.release(1);
911	<	}
912	<	catch (InterruptedException e) {
913	<	threadUnexpectedException(e);
914	<	}
915	<	}
916	<	});
917	<
918	<	try {
919	<	sync.acquire(1);
920	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
921	<	sync.release(1);
922	<	t1.start();
923	<	Thread.sleep(SHORT_DELAY_MS);
924	<	t2.start();
925	<	Thread.sleep(SHORT_DELAY_MS);
926	<	sync.acquire(1);
927	<	assertTrue(sync.hasWaiters(c));
928	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
929	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
930	<	c.signalAll();
931	<	sync.release(1);
932	<	Thread.sleep(SHORT_DELAY_MS);
933	<	sync.acquire(1);
934	<	assertFalse(sync.hasWaiters(c));
935	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
936	<	sync.release(1);
937	<	t1.join(SHORT_DELAY_MS);
938	<	t2.join(SHORT_DELAY_MS);
939	<	assertFalse(t1.isAlive());
940	<	assertFalse(t2.isAlive());
941	<	}
942	<	catch (Exception ex) {
943	<	unexpectedException();
944	<	}
888	>	final Mutex sync = new Mutex();
889	>	final ConditionObject c = sync.newCondition();
890	>	final BooleanLatch acquired1 = new BooleanLatch();
891	>	final BooleanLatch acquired2 = new BooleanLatch();
892	>	final Thread t1 = new Thread(new CheckedRunnable() {
893	>	public void realRun() throws InterruptedException {
894	>	sync.acquire();
895	>	assertHasWaitersLocked(sync, c, NO_THREADS);
896	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
897	>	assertTrue(acquired1.releaseShared(0));
898	>	c.await();
899	>	sync.release();
900	>	}});
901	>
902	>	final Thread t2 = new Thread(new CheckedRunnable() {
903	>	public void realRun() throws InterruptedException {
904	>	sync.acquire();
905	>	assertHasWaitersLocked(sync, c, t1);
906	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
907	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
908	>	assertEquals(1, sync.getWaitingThreads(c).size());
909	>	assertTrue(acquired2.releaseShared(0));
910	>	c.await();
911	>	sync.release();
912	>	}});
913	>
914	>	sync.acquire();
915	>	assertHasWaitersLocked(sync, c, NO_THREADS);
916	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
917	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
918	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
919	>	assertEquals(0, sync.getWaitingThreads(c).size());
920	>	sync.release();
921	>
922	>	t1.start();
923	>	acquired1.acquireShared(0);
924	>	sync.acquire();
925	>	assertHasWaitersLocked(sync, c, t1);
926	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
927	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
928	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
929	>	assertEquals(1, sync.getWaitingThreads(c).size());
930	>	sync.release();
931	>
932	>	t2.start();
933	>	acquired2.acquireShared(0);
934	>	sync.acquire();
935	>	assertHasWaitersLocked(sync, c, t1, t2);
936	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
937	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
938	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
939	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
940	>	assertEquals(2, sync.getWaitingThreads(c).size());
941	>	c.signalAll();
942	>	assertHasWaitersLocked(sync, c, NO_THREADS);
943	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
944	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
945	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
946	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
947	>	assertEquals(0, sync.getWaitingThreads(c).size());
948	>	sync.release();
949	>
950	>	awaitTermination(t1);
951	>	awaitTermination(t2);
952	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
953		}
954
935	–
936	–
955		/**
956	<	* awaitUninterruptibly doesn't abort on interrupt
956	>	* awaitUninterruptibly is uninterruptible
957		*/
958		public void testAwaitUninterruptibly() {
959	<	final Mutex sync = new Mutex();
960	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
961	<	Thread t = new Thread(new Runnable() {
962	<	public void run() {
963	<	sync.acquire(1);
964	<	c.awaitUninterruptibly();
965	<	sync.release(1);
966	<	}
967	<	});
968	<
969	<	try {
970	<	t.start();
971	<	Thread.sleep(SHORT_DELAY_MS);
972	<	t.interrupt();
973	<	sync.acquire(1);
974	<	c.signal();
975	<	sync.release(1);
976	<	t.join(SHORT_DELAY_MS);
977	<	assertFalse(t.isAlive());
978	<	}
979	<	catch (Exception ex) {
980	<	unexpectedException();
981	<	}
959	>	final Mutex sync = new Mutex();
960	>	final ConditionObject c = sync.newCondition();
961	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
962	>	Thread t = newStartedThread(new CheckedRunnable() {
963	>	public void realRun() {
964	>	sync.acquire();
965	>	assertTrue(pleaseInterrupt.releaseShared(0));
966	>	c.awaitUninterruptibly();
967	>	assertTrue(Thread.interrupted());
968	>	assertHasWaitersLocked(sync, c, NO_THREADS);
969	>	sync.release();
970	>	}});
971	>
972	>	pleaseInterrupt.acquireShared(0);
973	>	sync.acquire();
974	>	assertHasWaitersLocked(sync, c, t);
975	>	sync.release();
976	>	t.interrupt();
977	>	assertHasWaitersUnlocked(sync, c, t);
978	>	assertThreadStaysAlive(t);
979	>	sync.acquire();
980	>	assertHasWaitersLocked(sync, c, t);
981	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
982	>	c.signal();
983	>	assertHasWaitersLocked(sync, c, NO_THREADS);
984	>	assertHasExclusiveQueuedThreads(sync, t);
985	>	sync.release();
986	>	awaitTermination(t);
987		}
988
989		/**
990	<	* await is interruptible
991	<	*/
992	<	public void testAwait_Interrupt() {
993	<	final Mutex sync = new Mutex();
994	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
995	<	Thread t = new Thread(new Runnable() {
996	<	public void run() {
997	<	try {
998	<	sync.acquire(1);
999	<	c.await();
1000	<	sync.release(1);
1001	<	threadShouldThrow();
1002	<	}
1003	<	catch (InterruptedException success) {
1004	<	}
1005	<	}
1006	<	});
1007	<
1008	<	try {
1009	<	t.start();
987	<	Thread.sleep(SHORT_DELAY_MS);
988	<	t.interrupt();
989	<	t.join(SHORT_DELAY_MS);
990	<	assertFalse(t.isAlive());
991	<	}
992	<	catch (Exception ex) {
993	<	unexpectedException();
994	<	}
995	<	}
996	<
997	<	/**
998	<	* awaitNanos is interruptible
999	<	*/
1000	<	public void testAwaitNanos_Interrupt() {
1001	<	final Mutex sync = new Mutex();
1002	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1003	<	Thread t = new Thread(new Runnable() {
1004	<	public void run() {
1005	<	try {
1006	<	sync.acquire(1);
1007	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
1008	<	sync.release(1);
1009	<	threadShouldThrow();
1010	<	}
1011	<	catch (InterruptedException success) {
1012	<	}
1013	<	}
1014	<	});
1015	<
1016	<	try {
1017	<	t.start();
1018	<	Thread.sleep(SHORT_DELAY_MS);
1019	<	t.interrupt();
1020	<	t.join(SHORT_DELAY_MS);
1021	<	assertFalse(t.isAlive());
1022	<	}
1023	<	catch (Exception ex) {
1024	<	unexpectedException();
1025	<	}
1026	<	}
1027	<
1028	<	/**
1029	<	* awaitUntil is interruptible
1030	<	*/
1031	<	public void testAwaitUntil_Interrupt() {
1032	<	final Mutex sync = new Mutex();
1033	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1034	<	Thread t = new Thread(new Runnable() {
1035	<	public void run() {
1036	<	try {
1037	<	sync.acquire(1);
1038	<	java.util.Date d = new java.util.Date();
1039	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1040	<	sync.release(1);
1041	<	threadShouldThrow();
1042	<	}
1043	<	catch (InterruptedException success) {
1044	<	}
1045	<	}
1046	<	});
1047	<
1048	<	try {
1049	<	t.start();
1050	<	Thread.sleep(SHORT_DELAY_MS);
1051	<	t.interrupt();
1052	<	t.join(SHORT_DELAY_MS);
1053	<	assertFalse(t.isAlive());
1054	<	}
1055	<	catch (Exception ex) {
1056	<	unexpectedException();
1057	<	}
990	>	* await/awaitNanos/awaitUntil is interruptible
991	>	*/
992	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
993	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
994	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
995	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
996	>	public void testInterruptible(final AwaitMethod awaitMethod) {
997	>	final Mutex sync = new Mutex();
998	>	final ConditionObject c = sync.newCondition();
999	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1000	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1001	>	public void realRun() throws InterruptedException {
1002	>	sync.acquire();
1003	>	assertTrue(pleaseInterrupt.releaseShared(0));
1004	>	await(c, awaitMethod);
1005	>	}});
1006	>
1007	>	pleaseInterrupt.acquireShared(0);
1008	>	t.interrupt();
1009	>	awaitTermination(t);
1010		}
1011
1012		/**
1013		* signalAll wakes up all threads
1014		*/
1015	<	public void testSignalAll() {
1016	<	final Mutex sync = new Mutex();
1017	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1018	<	Thread t1 = new Thread(new Runnable() {
1019	<	public void run() {
1020	<	try {
1021	<	sync.acquire(1);
1022	<	c.await();
1023	<	sync.release(1);
1024	<	}
1025	<	catch (InterruptedException e) {
1026	<	threadUnexpectedException();
1027	<	}
1028	<	}
1029	<	});
1030	<
1031	<	Thread t2 = new Thread(new Runnable() {
1032	<	public void run() {
1033	<	try {
1034	<	sync.acquire(1);
1035	<	c.await();
1036	<	sync.release(1);
1037	<	}
1038	<	catch (InterruptedException e) {
1039	<	threadUnexpectedException();
1040	<	}
1041	<	}
1042	<	});
1043	<
1044	<	try {
1045	<	t1.start();
1046	<	t2.start();
1047	<	Thread.sleep(SHORT_DELAY_MS);
1048	<	sync.acquire(1);
1049	<	c.signalAll();
1050	<	sync.release(1);
1099	<	t1.join(SHORT_DELAY_MS);
1100	<	t2.join(SHORT_DELAY_MS);
1101	<	assertFalse(t1.isAlive());
1102	<	assertFalse(t2.isAlive());
1103	<	}
1104	<	catch (Exception ex) {
1105	<	unexpectedException();
1106	<	}
1015	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1016	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1017	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1018	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1019	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1020	>	final Mutex sync = new Mutex();
1021	>	final ConditionObject c = sync.newCondition();
1022	>	final BooleanLatch acquired1 = new BooleanLatch();
1023	>	final BooleanLatch acquired2 = new BooleanLatch();
1024	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1025	>	public void realRun() throws InterruptedException {
1026	>	sync.acquire();
1027	>	acquired1.releaseShared(0);
1028	>	await(c, awaitMethod);
1029	>	sync.release();
1030	>	}});
1031	>
1032	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1033	>	public void realRun() throws InterruptedException {
1034	>	sync.acquire();
1035	>	acquired2.releaseShared(0);
1036	>	await(c, awaitMethod);
1037	>	sync.release();
1038	>	}});
1039	>
1040	>	acquired1.acquireShared(0);
1041	>	acquired2.acquireShared(0);
1042	>	sync.acquire();
1043	>	assertHasWaitersLocked(sync, c, t1, t2);
1044	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1045	>	c.signalAll();
1046	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1047	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1048	>	sync.release();
1049	>	awaitTermination(t1);
1050	>	awaitTermination(t2);
1051		}
1052
1109	–
1053		/**
1054		* toString indicates current state
1055		*/
1056		public void testToString() {
1057		Mutex sync = new Mutex();
1058	<	String us = sync.toString();
1059	<	assertTrue(us.indexOf("State = 0") >= 0);
1060	<	sync.acquire(1);
1118	<	String ls = sync.toString();
1119	<	assertTrue(ls.indexOf("State = " + Mutex.LOCKED) >= 0);
1058	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1059	>	sync.acquire();
1060	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1061		}
1062
1063		/**
1064	<	* A serialized AQS deserializes with current state
1064	>	* A serialized AQS deserializes with current state, but no queued threads
1065		*/
1066		public void testSerialization() {
1067	<	Mutex l = new Mutex();
1068	<	l.acquire(1);
1069	<	assertTrue(l.isHeldExclusively());
1070	<
1071	<	try {
1072	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1073	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1074	<	out.writeObject(l);
1075	<	out.close();
1076	<
1077	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1078	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1079	<	Mutex r = (Mutex) in.readObject();
1080	<	assertTrue(r.isHeldExclusively());
1081	<	} catch (Exception e) {
1082	<	e.printStackTrace();
1083	<	unexpectedException();
1084	<	}
1067	>	Mutex sync = new Mutex();
1068	>	assertFalse(serialClone(sync).isHeldExclusively());
1069	>	sync.acquire();
1070	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1071	>	waitForQueuedThread(sync, t);
1072	>	assertTrue(sync.isHeldExclusively());
1073	>
1074	>	Mutex clone = serialClone(sync);
1075	>	assertTrue(clone.isHeldExclusively());
1076	>	assertHasExclusiveQueuedThreads(sync, t);
1077	>	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1078	>	t.interrupt();
1079	>	awaitTermination(t);
1080	>	sync.release();
1081	>	assertFalse(sync.isHeldExclusively());
1082	>	assertTrue(clone.isHeldExclusively());
1083	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1084	>	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1085		}
1086
1146	–
1087		/**
1088		* tryReleaseShared setting state changes getState
1089		*/
1090		public void testGetStateWithReleaseShared() {
1091	<	final BooleanLatch l = new BooleanLatch();
1092	<	assertFalse(l.isSignalled());
1093	<	l.releaseShared(0);
1094	<	assertTrue(l.isSignalled());
1091	>	final BooleanLatch l = new BooleanLatch();
1092	>	assertFalse(l.isSignalled());
1093	>	assertTrue(l.releaseShared(0));
1094	>	assertTrue(l.isSignalled());
1095		}
1096
1097		/**
1098		* releaseShared has no effect when already signalled
1099		*/
1100		public void testReleaseShared() {
1101	<	final BooleanLatch l = new BooleanLatch();
1102	<	assertFalse(l.isSignalled());
1103	<	l.releaseShared(0);
1104	<	assertTrue(l.isSignalled());
1105	<	l.releaseShared(0);
1106	<	assertTrue(l.isSignalled());
1101	>	final BooleanLatch l = new BooleanLatch();
1102	>	assertFalse(l.isSignalled());
1103	>	assertTrue(l.releaseShared(0));
1104	>	assertTrue(l.isSignalled());
1105	>	assertTrue(l.releaseShared(0));
1106	>	assertTrue(l.isSignalled());
1107		}
1108
1109		/**
1110		* acquireSharedInterruptibly returns after release, but not before
1111		*/
1112		public void testAcquireSharedInterruptibly() {
1113	<	final BooleanLatch l = new BooleanLatch();
1113	>	final BooleanLatch l = new BooleanLatch();
1114
1115	<	Thread t = new Thread(new Runnable() {
1116	<	public void run() {
1117	<	try {
1118	<	threadAssertFalse(l.isSignalled());
1119	<	l.acquireSharedInterruptibly(0);
1120	<	threadAssertTrue(l.isSignalled());
1121	<	} catch (InterruptedException e) {
1122	<	threadUnexpectedException();
1123	<	}
1124	<	}
1125	<	});
1126	<	try {
1127	<	t.start();
1128	<	assertFalse(l.isSignalled());
1129	<	Thread.sleep(SHORT_DELAY_MS);
1130	<	l.releaseShared(0);
1191	<	assertTrue(l.isSignalled());
1192	<	t.join();
1193	<	} catch (InterruptedException e) {
1194	<	unexpectedException();
1195	<	}
1115	>	Thread t = newStartedThread(new CheckedRunnable() {
1116	>	public void realRun() throws InterruptedException {
1117	>	assertFalse(l.isSignalled());
1118	>	l.acquireSharedInterruptibly(0);
1119	>	assertTrue(l.isSignalled());
1120	>	l.acquireSharedInterruptibly(0);
1121	>	assertTrue(l.isSignalled());
1122	>	}});
1123	>
1124	>	waitForQueuedThread(l, t);
1125	>	assertFalse(l.isSignalled());
1126	>	assertThreadStaysAlive(t);
1127	>	assertHasSharedQueuedThreads(l, t);
1128	>	assertTrue(l.releaseShared(0));
1129	>	assertTrue(l.isSignalled());
1130	>	awaitTermination(t);
1131		}
1132
1198	–
1133		/**
1134	<	* acquireSharedTimed returns after release
1134	>	* tryAcquireSharedNanos returns after release, but not before
1135		*/
1136	<	public void testAsquireSharedTimed() {
1137	<	final BooleanLatch l = new BooleanLatch();
1136	>	public void testTryAcquireSharedNanos() {
1137	>	final BooleanLatch l = new BooleanLatch();
1138
1139	<	Thread t = new Thread(new Runnable() {
1140	<	public void run() {
1141	<	try {
1142	<	threadAssertFalse(l.isSignalled());
1143	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1144	<	threadAssertTrue(l.isSignalled());
1145	<
1146	<	} catch (InterruptedException e) {
1147	<	threadUnexpectedException();
1148	<	}
1149	<	}
1150	<	});
1151	<	try {
1152	<	t.start();
1153	<	assertFalse(l.isSignalled());
1154	<	Thread.sleep(SHORT_DELAY_MS);
1221	<	l.releaseShared(0);
1222	<	assertTrue(l.isSignalled());
1223	<	t.join();
1224	<	} catch (InterruptedException e) {
1225	<	unexpectedException();
1226	<	}
1139	>	Thread t = newStartedThread(new CheckedRunnable() {
1140	>	public void realRun() throws InterruptedException {
1141	>	assertFalse(l.isSignalled());
1142	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1143	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1144	>	assertTrue(l.isSignalled());
1145	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1146	>	assertTrue(l.isSignalled());
1147	>	}});
1148	>
1149	>	waitForQueuedThread(l, t);
1150	>	assertFalse(l.isSignalled());
1151	>	assertThreadStaysAlive(t);
1152	>	assertTrue(l.releaseShared(0));
1153	>	assertTrue(l.isSignalled());
1154	>	awaitTermination(t);
1155		}
1156
1157		/**
1158	<	* acquireSharedInterruptibly throws IE if interrupted before released
1158	>	* acquireSharedInterruptibly is interruptible
1159		*/
1160	<	public void testAcquireSharedInterruptibly_InterruptedException() {
1160	>	public void testAcquireSharedInterruptibly_Interruptible() {
1161		final BooleanLatch l = new BooleanLatch();
1162	<	Thread t = new Thread(new Runnable() {
1163	<	public void run() {
1164	<	try {
1165	<	threadAssertFalse(l.isSignalled());
1166	<	l.acquireSharedInterruptibly(0);
1167	<	threadShouldThrow();
1168	<	} catch (InterruptedException success) {}
1169	<	}
1170	<	});
1171	<	t.start();
1172	<	try {
1245	<	assertFalse(l.isSignalled());
1246	<	t.interrupt();
1247	<	t.join();
1248	<	} catch (InterruptedException e) {
1249	<	unexpectedException();
1250	<	}
1162	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1163	>	public void realRun() throws InterruptedException {
1164	>	assertFalse(l.isSignalled());
1165	>	l.acquireSharedInterruptibly(0);
1166	>	}});
1167	>
1168	>	waitForQueuedThread(l, t);
1169	>	assertFalse(l.isSignalled());
1170	>	t.interrupt();
1171	>	awaitTermination(t);
1172	>	assertFalse(l.isSignalled());
1173		}
1174
1175		/**
1176	<	* acquireSharedTimed throws IE if interrupted before released
1176	>	* tryAcquireSharedNanos is interruptible
1177		*/
1178	<	public void testAcquireSharedNanos_InterruptedException() {
1178	>	public void testTryAcquireSharedNanos_Interruptible() {
1179		final BooleanLatch l = new BooleanLatch();
1180	<	Thread t = new Thread(new Runnable() {
1181	<	public void run() {
1182	<	try {
1183	<	threadAssertFalse(l.isSignalled());
1184	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1185	<	threadShouldThrow();
1186	<	} catch (InterruptedException success) {}
1187	<	}
1188	<	});
1189	<	t.start();
1190	<	try {
1191	<	Thread.sleep(SHORT_DELAY_MS);
1270	<	assertFalse(l.isSignalled());
1271	<	t.interrupt();
1272	<	t.join();
1273	<	} catch (InterruptedException e) {
1274	<	unexpectedException();
1275	<	}
1180	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1181	>	public void realRun() throws InterruptedException {
1182	>	assertFalse(l.isSignalled());
1183	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1184	>	l.tryAcquireSharedNanos(0, nanos);
1185	>	}});
1186	>
1187	>	waitForQueuedThread(l, t);
1188	>	assertFalse(l.isSignalled());
1189	>	t.interrupt();
1190	>	awaitTermination(t);
1191	>	assertFalse(l.isSignalled());
1192		}
1193
1194		/**
1195	<	* acquireSharedTimed times out if not released before timeout
1195	>	* tryAcquireSharedNanos times out if not released before timeout
1196		*/
1197	<	public void testAcquireSharedNanos_Timeout() {
1197	>	public void testTryAcquireSharedNanos_Timeout() {
1198		final BooleanLatch l = new BooleanLatch();
1199	<	Thread t = new Thread(new Runnable() {
1200	<	public void run() {
1201	<	try {
1202	<	threadAssertFalse(l.isSignalled());
1203	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1204	<	} catch (InterruptedException ie) {
1205	<	threadUnexpectedException();
1206	<	}
1199	>	final BooleanLatch observedQueued = new BooleanLatch();
1200	>	Thread t = newStartedThread(new CheckedRunnable() {
1201	>	public void realRun() throws InterruptedException {
1202	>	assertFalse(l.isSignalled());
1203	>	for (long millis = timeoutMillis();
1204	>	!observedQueued.isSignalled();
1205	>	millis *= 2) {
1206	>	long nanos = MILLISECONDS.toNanos(millis);
1207	>	long startTime = System.nanoTime();
1208	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1209	>	assertTrue(millisElapsedSince(startTime) >= millis);
1210		}
1211	<	});
1212	<	t.start();
1213	<	try {
1214	<	Thread.sleep(SHORT_DELAY_MS);
1215	<	assertFalse(l.isSignalled());
1216	<	t.join();
1217	<	} catch (InterruptedException e) {
1218	<	unexpectedException();
1300	<	}
1211	>	assertFalse(l.isSignalled());
1212	>	}});
1213	>
1214	>	waitForQueuedThread(l, t);
1215	>	observedQueued.releaseShared(0);
1216	>	assertFalse(l.isSignalled());
1217	>	awaitTermination(t);
1218	>	assertFalse(l.isSignalled());
1219		}
1220
1221	+	/**
1222	+	* awaitNanos/timed await with 0 wait times out immediately
1223	+	*/
1224	+	public void testAwait_Zero() throws InterruptedException {
1225	+	final Mutex sync = new Mutex();
1226	+	final ConditionObject c = sync.newCondition();
1227	+	sync.acquire();
1228	+	assertTrue(c.awaitNanos(0L) <= 0);
1229	+	assertFalse(c.await(0L, NANOSECONDS));
1230	+	sync.release();
1231	+	}
1232	+
1233	+	/**
1234	+	* awaitNanos/timed await with maximum negative wait times does not underflow
1235	+	*/
1236	+	public void testAwait_NegativeInfinity() throws InterruptedException {
1237	+	final Mutex sync = new Mutex();
1238	+	final ConditionObject c = sync.newCondition();
1239	+	sync.acquire();
1240	+	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1241	+	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1242	+	sync.release();
1243	+	}
1244
1245		}

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