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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.37 by jsr166, Mon Oct 11 06:36:20 2010 UTC vs.
Revision 1.49 by jsr166, Sun Feb 22 04:34:44 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–
10	–	import junit.framework.*;
11	–	import java.util.*;
12	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.util.concurrent.locks.*;
11	<	import java.io.*;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.HashSet;
15	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer;
16	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer.ConditionObject;
17	>
18	>	import junit.framework.AssertionFailedError;
19	>	import junit.framework.Test;
20	>	import junit.framework.TestSuite;
21
22		public class AbstractQueuedSynchronizerTest extends JSR166TestCase {
23		public static void main(String[] args) {
#	Line 23 | Line 28 | public class AbstractQueuedSynchronizerT
28		}
29
30		/**
31	<	* A simple mutex class, adapted from the
32	<	* AbstractQueuedSynchronizer javadoc.  Exclusive acquire tests
33	<	* exercise this as a sample user extension.  Other
34	<	* methods/features of AbstractQueuedSynchronizerTest are tested
35	<	* via other test classes, including those for ReentrantLock,
31	<	* ReentrantReadWriteLock, and Semaphore
31	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
32	>	* acquire tests exercise this as a sample user extension.  Other
33	>	* methods/features of AbstractQueuedSynchronizer are tested via
34	>	* other test classes, including those for ReentrantLock,
35	>	* ReentrantReadWriteLock, and Semaphore.
36		*/
37		static class Mutex extends AbstractQueuedSynchronizer {
38	<	public boolean isHeldExclusively() { return getState() == 1; }
38	>	/** An eccentric value for locked synchronizer state. */
39	>	static final int LOCKED = (1 << 31) | (1 << 15);
40
41	<	public boolean tryAcquire(int acquires) {
42	<	assertEquals(1, acquires);
43	<	return compareAndSetState(0, 1);
41	>	static final int UNLOCKED = 0;
42	>
43	>	@Override public boolean isHeldExclusively() {
44	>	int state = getState();
45	>	assertTrue(state == UNLOCKED || state == LOCKED);
46	>	return state == LOCKED;
47		}
48
49	<	public boolean tryRelease(int releases) {
50	<	if (getState() == 0) throw new IllegalMonitorStateException();
51	<	setState(0);
49	>	@Override public boolean tryAcquire(int acquires) {
50	>	assertEquals(LOCKED, acquires);
51	>	return compareAndSetState(UNLOCKED, LOCKED);
52	>	}
53	>
54	>	@Override public boolean tryRelease(int releases) {
55	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
56	>	assertEquals(LOCKED, releases);
57	>	setState(UNLOCKED);
58		return true;
59		}
60
61	<	public AbstractQueuedSynchronizer.ConditionObject newCondition() {
62	<	return new AbstractQueuedSynchronizer.ConditionObject();
61	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
62	>	return tryAcquireNanos(LOCKED, nanos);
63		}
64
65	<	}
65	>	public boolean tryAcquire() {
66	>	return tryAcquire(LOCKED);
67	>	}
68
69	+	public boolean tryRelease() {
70	+	return tryRelease(LOCKED);
71	+	}
72	+
73	+	public void acquire() {
74	+	acquire(LOCKED);
75	+	}
76	+
77	+	public void acquireInterruptibly() throws InterruptedException {
78	+	acquireInterruptibly(LOCKED);
79	+	}
80	+
81	+	public void release() {
82	+	release(LOCKED);
83	+	}
84	+
85	+	public ConditionObject newCondition() {
86	+	return new ConditionObject();
87	+	}
88	+	}
89
90		/**
91		* A simple latch class, to test shared mode.
#	Line 58 | Line 94 | public class AbstractQueuedSynchronizerT
94		public boolean isSignalled() { return getState() != 0; }
95
96		public int tryAcquireShared(int ignore) {
97	<	return isSignalled()? 1 : -1;
97	>	return isSignalled() ? 1 : -1;
98		}
99
100		public boolean tryReleaseShared(int ignore) {
#	Line 73 | Line 109 | public class AbstractQueuedSynchronizerT
109		*/
110		class InterruptibleSyncRunnable extends CheckedRunnable {
111		final Mutex sync;
112	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
112	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
113		public void realRun() throws InterruptedException {
114	<	sync.acquireInterruptibly(1);
114	>	sync.acquireInterruptibly();
115		}
116		}
117
82	–
118		/**
119		* A runnable calling acquireInterruptibly that expects to be
120		* interrupted.
121		*/
122		class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
123		final Mutex sync;
124	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
124	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
125		public void realRun() throws InterruptedException {
126	<	sync.acquireInterruptibly(1);
126	>	sync.acquireInterruptibly();
127	>	}
128	>	}
129	>
130	>	/** A constant to clarify calls to checking methods below. */
131	>	static final Thread[] NO_THREADS = new Thread[0];
132	>
133	>	/**
134	>	* Spin-waits until sync.isQueued(t) becomes true.
135	>	*/
136	>	void waitForQueuedThread(AbstractQueuedSynchronizer sync, Thread t) {
137	>	long startTime = System.nanoTime();
138	>	while (!sync.isQueued(t)) {
139	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
140	>	throw new AssertionFailedError("timed out");
141	>	Thread.yield();
142	>	}
143	>	assertTrue(t.isAlive());
144	>	}
145	>
146	>	/**
147	>	* Checks that sync has exactly the given queued threads.
148	>	*/
149	>	void assertHasQueuedThreads(AbstractQueuedSynchronizer sync,
150	>	Thread... expected) {
151	>	Collection<Thread> actual = sync.getQueuedThreads();
152	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
153	>	assertEquals(expected.length, sync.getQueueLength());
154	>	assertEquals(expected.length, actual.size());
155	>	assertEquals(expected.length == 0, actual.isEmpty());
156	>	assertEquals(new HashSet<Thread>(actual),
157	>	new HashSet<Thread>(Arrays.asList(expected)));
158	>	}
159	>
160	>	/**
161	>	* Checks that sync has exactly the given (exclusive) queued threads.
162	>	*/
163	>	void assertHasExclusiveQueuedThreads(AbstractQueuedSynchronizer sync,
164	>	Thread... expected) {
165	>	assertHasQueuedThreads(sync, expected);
166	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
167	>	new HashSet<Thread>(sync.getQueuedThreads()));
168	>	assertEquals(0, sync.getSharedQueuedThreads().size());
169	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
170	>	}
171	>
172	>	/**
173	>	* Checks that sync has exactly the given (shared) queued threads.
174	>	*/
175	>	void assertHasSharedQueuedThreads(AbstractQueuedSynchronizer sync,
176	>	Thread... expected) {
177	>	assertHasQueuedThreads(sync, expected);
178	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
179	>	new HashSet<Thread>(sync.getQueuedThreads()));
180	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
181	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
182	>	}
183	>
184	>	/**
185	>	* Checks that condition c has exactly the given waiter threads,
186	>	* after acquiring mutex.
187	>	*/
188	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
189	>	Thread... threads) {
190	>	sync.acquire();
191	>	assertHasWaitersLocked(sync, c, threads);
192	>	sync.release();
193	>	}
194	>
195	>	/**
196	>	* Checks that condition c has exactly the given waiter threads.
197	>	*/
198	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
199	>	Thread... threads) {
200	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
201	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
202	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
203	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
204	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
205	>	new HashSet<Thread>(Arrays.asList(threads)));
206	>	}
207	>
208	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
209	>
210	>	/**
211	>	* Awaits condition using the specified AwaitMethod.
212	>	*/
213	>	void await(ConditionObject c, AwaitMethod awaitMethod)
214	>	throws InterruptedException {
215	>	long timeoutMillis = 2 * LONG_DELAY_MS;
216	>	switch (awaitMethod) {
217	>	case await:
218	>	c.await();
219	>	break;
220	>	case awaitTimed:
221	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
222	>	break;
223	>	case awaitNanos:
224	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
225	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
226	>	assertTrue(nanosRemaining > 0);
227	>	break;
228	>	case awaitUntil:
229	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
230	>	break;
231	>	default:
232	>	throw new AssertionError();
233		}
234		}
235
236		/**
237	+	* Checks that awaiting the given condition times out (using the
238	+	* default timeout duration).
239	+	*/
240	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
241	+	long timeoutMillis = timeoutMillis();
242	+	long startTime = System.nanoTime();
243	+	try {
244	+	switch (awaitMethod) {
245	+	case awaitTimed:
246	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
247	+	break;
248	+	case awaitNanos:
249	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
250	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
251	+	assertTrue(nanosRemaining <= 0);
252	+	break;
253	+	case awaitUntil:
254	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
255	+	break;
256	+	default:
257	+	throw new UnsupportedOperationException();
258	+	}
259	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
260	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
261	+	}
262	+
263	+	/**
264		* isHeldExclusively is false upon construction
265		*/
266		public void testIsHeldExclusively() {
267	<	Mutex rl = new Mutex();
268	<	assertFalse(rl.isHeldExclusively());
267	>	Mutex sync = new Mutex();
268	>	assertFalse(sync.isHeldExclusively());
269		}
270
271		/**
272		* acquiring released sync succeeds
273		*/
274		public void testAcquire() {
275	<	Mutex rl = new Mutex();
276	<	rl.acquire(1);
277	<	assertTrue(rl.isHeldExclusively());
278	<	rl.release(1);
279	<	assertFalse(rl.isHeldExclusively());
275	>	Mutex sync = new Mutex();
276	>	sync.acquire();
277	>	assertTrue(sync.isHeldExclusively());
278	>	sync.release();
279	>	assertFalse(sync.isHeldExclusively());
280		}
281
282		/**
283	<	* tryAcquire on an released sync succeeds
283	>	* tryAcquire on a released sync succeeds
284		*/
285		public void testTryAcquire() {
286	<	Mutex rl = new Mutex();
287	<	assertTrue(rl.tryAcquire(1));
288	<	assertTrue(rl.isHeldExclusively());
289	<	rl.release(1);
286	>	Mutex sync = new Mutex();
287	>	assertTrue(sync.tryAcquire());
288	>	assertTrue(sync.isHeldExclusively());
289	>	sync.release();
290	>	assertFalse(sync.isHeldExclusively());
291		}
292
293		/**
294		* hasQueuedThreads reports whether there are waiting threads
295		*/
296	<	public void testhasQueuedThreads() throws InterruptedException {
296	>	public void testHasQueuedThreads() {
297		final Mutex sync = new Mutex();
129	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
130	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
298		assertFalse(sync.hasQueuedThreads());
299	<	sync.acquire(1);
300	<	t1.start();
301	<	Thread.sleep(SHORT_DELAY_MS);
299	>	sync.acquire();
300	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
301	>	waitForQueuedThread(sync, t1);
302		assertTrue(sync.hasQueuedThreads());
303	<	t2.start();
304	<	Thread.sleep(SHORT_DELAY_MS);
303	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
304	>	waitForQueuedThread(sync, t2);
305		assertTrue(sync.hasQueuedThreads());
306		t1.interrupt();
307	<	Thread.sleep(SHORT_DELAY_MS);
307	>	awaitTermination(t1);
308		assertTrue(sync.hasQueuedThreads());
309	<	sync.release(1);
310	<	Thread.sleep(SHORT_DELAY_MS);
309	>	sync.release();
310	>	awaitTermination(t2);
311		assertFalse(sync.hasQueuedThreads());
145	–	t1.join();
146	–	t2.join();
312		}
313
314		/**
315	<	* isQueued(null) throws NPE
315	>	* isQueued(null) throws NullPointerException
316		*/
317		public void testIsQueuedNPE() {
318		final Mutex sync = new Mutex();
#	Line 158 | Line 323 | public class AbstractQueuedSynchronizerT
323		}
324
325		/**
326	<	* isQueued reports whether a thread is queued.
326	>	* isQueued reports whether a thread is queued
327		*/
328	<	public void testIsQueued() throws InterruptedException {
328	>	public void testIsQueued() {
329		final Mutex sync = new Mutex();
330		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
331		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
332		assertFalse(sync.isQueued(t1));
333		assertFalse(sync.isQueued(t2));
334	<	sync.acquire(1);
334	>	sync.acquire();
335		t1.start();
336	<	Thread.sleep(SHORT_DELAY_MS);
336	>	waitForQueuedThread(sync, t1);
337		assertTrue(sync.isQueued(t1));
338	+	assertFalse(sync.isQueued(t2));
339		t2.start();
340	<	Thread.sleep(SHORT_DELAY_MS);
340	>	waitForQueuedThread(sync, t2);
341		assertTrue(sync.isQueued(t1));
342		assertTrue(sync.isQueued(t2));
343		t1.interrupt();
344	<	Thread.sleep(SHORT_DELAY_MS);
344	>	awaitTermination(t1);
345		assertFalse(sync.isQueued(t1));
346		assertTrue(sync.isQueued(t2));
347	<	sync.release(1);
348	<	Thread.sleep(SHORT_DELAY_MS);
347	>	sync.release();
348	>	awaitTermination(t2);
349		assertFalse(sync.isQueued(t1));
184	–	Thread.sleep(SHORT_DELAY_MS);
350		assertFalse(sync.isQueued(t2));
186	–	t1.join();
187	–	t2.join();
351		}
352
353		/**
354		* getFirstQueuedThread returns first waiting thread or null if none
355		*/
356	<	public void testGetFirstQueuedThread() throws InterruptedException {
356	>	public void testGetFirstQueuedThread() {
357		final Mutex sync = new Mutex();
195	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
196	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
358		assertNull(sync.getFirstQueuedThread());
359	<	sync.acquire(1);
360	<	t1.start();
361	<	Thread.sleep(SHORT_DELAY_MS);
359	>	sync.acquire();
360	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
361	>	waitForQueuedThread(sync, t1);
362		assertEquals(t1, sync.getFirstQueuedThread());
363	<	t2.start();
364	<	Thread.sleep(SHORT_DELAY_MS);
363	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
364	>	waitForQueuedThread(sync, t2);
365		assertEquals(t1, sync.getFirstQueuedThread());
366		t1.interrupt();
367	<	Thread.sleep(SHORT_DELAY_MS);
207	<	Thread.sleep(SHORT_DELAY_MS);
367	>	awaitTermination(t1);
368		assertEquals(t2, sync.getFirstQueuedThread());
369	<	sync.release(1);
370	<	Thread.sleep(SHORT_DELAY_MS);
369	>	sync.release();
370	>	awaitTermination(t2);
371		assertNull(sync.getFirstQueuedThread());
212	–	t1.join();
213	–	t2.join();
372		}
373
216	–
374		/**
375		* hasContended reports false if no thread has ever blocked, else true
376		*/
377	<	public void testHasContended() throws InterruptedException {
377	>	public void testHasContended() {
378		final Mutex sync = new Mutex();
222	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
223	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
379		assertFalse(sync.hasContended());
380	<	sync.acquire(1);
381	<	t1.start();
382	<	Thread.sleep(SHORT_DELAY_MS);
380	>	sync.acquire();
381	>	assertFalse(sync.hasContended());
382	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
383	>	waitForQueuedThread(sync, t1);
384		assertTrue(sync.hasContended());
385	<	t2.start();
386	<	Thread.sleep(SHORT_DELAY_MS);
385	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
386	>	waitForQueuedThread(sync, t2);
387		assertTrue(sync.hasContended());
388		t1.interrupt();
389	<	Thread.sleep(SHORT_DELAY_MS);
389	>	awaitTermination(t1);
390		assertTrue(sync.hasContended());
391	<	sync.release(1);
392	<	Thread.sleep(SHORT_DELAY_MS);
391	>	sync.release();
392	>	awaitTermination(t2);
393		assertTrue(sync.hasContended());
238	–	t1.join();
239	–	t2.join();
394		}
395
396		/**
397	<	* getQueuedThreads includes waiting threads
397	>	* getQueuedThreads returns all waiting threads
398		*/
399	<	public void testGetQueuedThreads() throws InterruptedException {
399	>	public void testGetQueuedThreads() {
400		final Mutex sync = new Mutex();
401		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
402		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
403	<	assertTrue(sync.getQueuedThreads().isEmpty());
404	<	sync.acquire(1);
405	<	assertTrue(sync.getQueuedThreads().isEmpty());
403	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
404	>	sync.acquire();
405	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
406		t1.start();
407	<	Thread.sleep(SHORT_DELAY_MS);
407	>	waitForQueuedThread(sync, t1);
408	>	assertHasExclusiveQueuedThreads(sync, t1);
409		assertTrue(sync.getQueuedThreads().contains(t1));
410	+	assertFalse(sync.getQueuedThreads().contains(t2));
411		t2.start();
412	<	Thread.sleep(SHORT_DELAY_MS);
412	>	waitForQueuedThread(sync, t2);
413	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
414		assertTrue(sync.getQueuedThreads().contains(t1));
415		assertTrue(sync.getQueuedThreads().contains(t2));
416		t1.interrupt();
417	<	Thread.sleep(SHORT_DELAY_MS);
418	<	assertFalse(sync.getQueuedThreads().contains(t1));
419	<	assertTrue(sync.getQueuedThreads().contains(t2));
420	<	sync.release(1);
421	<	Thread.sleep(SHORT_DELAY_MS);
265	<	assertTrue(sync.getQueuedThreads().isEmpty());
266	<	t1.join();
267	<	t2.join();
417	>	awaitTermination(t1);
418	>	assertHasExclusiveQueuedThreads(sync, t2);
419	>	sync.release();
420	>	awaitTermination(t2);
421	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
422		}
423
424		/**
425	<	* getExclusiveQueuedThreads includes waiting threads
425	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
426		*/
427	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
427	>	public void testGetExclusiveQueuedThreads() {
428		final Mutex sync = new Mutex();
429		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
430		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
431	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
432	<	sync.acquire(1);
433	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
431	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
432	>	sync.acquire();
433	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
434		t1.start();
435	<	Thread.sleep(SHORT_DELAY_MS);
435	>	waitForQueuedThread(sync, t1);
436	>	assertHasExclusiveQueuedThreads(sync, t1);
437		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
438	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
439		t2.start();
440	<	Thread.sleep(SHORT_DELAY_MS);
440	>	waitForQueuedThread(sync, t2);
441	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
442		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
443		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
444		t1.interrupt();
445	<	Thread.sleep(SHORT_DELAY_MS);
446	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
447	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
448	<	sync.release(1);
449	<	Thread.sleep(SHORT_DELAY_MS);
293	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
294	<	t1.join();
295	<	t2.join();
445	>	awaitTermination(t1);
446	>	assertHasExclusiveQueuedThreads(sync, t2);
447	>	sync.release();
448	>	awaitTermination(t2);
449	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
450		}
451
452		/**
453		* getSharedQueuedThreads does not include exclusively waiting threads
454		*/
455	<	public void testGetSharedQueuedThreads() throws InterruptedException {
455	>	public void testGetSharedQueuedThreads_Exclusive() {
456		final Mutex sync = new Mutex();
303	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
304	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
457		assertTrue(sync.getSharedQueuedThreads().isEmpty());
458	<	sync.acquire(1);
458	>	sync.acquire();
459		assertTrue(sync.getSharedQueuedThreads().isEmpty());
460	<	t1.start();
461	<	Thread.sleep(SHORT_DELAY_MS);
460	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
461	>	waitForQueuedThread(sync, t1);
462		assertTrue(sync.getSharedQueuedThreads().isEmpty());
463	<	t2.start();
464	<	Thread.sleep(SHORT_DELAY_MS);
463	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
464	>	waitForQueuedThread(sync, t2);
465		assertTrue(sync.getSharedQueuedThreads().isEmpty());
466		t1.interrupt();
467	<	Thread.sleep(SHORT_DELAY_MS);
467	>	awaitTermination(t1);
468		assertTrue(sync.getSharedQueuedThreads().isEmpty());
469	<	sync.release(1);
470	<	Thread.sleep(SHORT_DELAY_MS);
469	>	sync.release();
470	>	awaitTermination(t2);
471		assertTrue(sync.getSharedQueuedThreads().isEmpty());
320	–	t1.join();
321	–	t2.join();
472		}
473
474		/**
475	<	* tryAcquireNanos is interruptible.
475	>	* getSharedQueuedThreads returns all shared waiting threads
476	>	*/
477	>	public void testGetSharedQueuedThreads_Shared() {
478	>	final BooleanLatch l = new BooleanLatch();
479	>	assertHasSharedQueuedThreads(l, NO_THREADS);
480	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
481	>	public void realRun() throws InterruptedException {
482	>	l.acquireSharedInterruptibly(0);
483	>	}});
484	>	waitForQueuedThread(l, t1);
485	>	assertHasSharedQueuedThreads(l, t1);
486	>	Thread t2 = newStartedThread(new CheckedRunnable() {
487	>	public void realRun() throws InterruptedException {
488	>	l.acquireSharedInterruptibly(0);
489	>	}});
490	>	waitForQueuedThread(l, t2);
491	>	assertHasSharedQueuedThreads(l, t1, t2);
492	>	t1.interrupt();
493	>	awaitTermination(t1);
494	>	assertHasSharedQueuedThreads(l, t2);
495	>	assertTrue(l.releaseShared(0));
496	>	awaitTermination(t2);
497	>	assertHasSharedQueuedThreads(l, NO_THREADS);
498	>	}
499	>
500	>	/**
501	>	* tryAcquireNanos is interruptible
502		*/
503	<	public void testInterruptedException2() throws InterruptedException {
503	>	public void testTryAcquireNanos_Interruptible() {
504		final Mutex sync = new Mutex();
505	<	sync.acquire(1);
506	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
505	>	sync.acquire();
506	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
507		public void realRun() throws InterruptedException {
508	<	sync.tryAcquireNanos(1, MILLISECONDS.toNanos(MEDIUM_DELAY_MS));
508	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
509		}});
510
511	<	t.start();
336	<	Thread.sleep(SHORT_DELAY_MS);
511	>	waitForQueuedThread(sync, t);
512		t.interrupt();
513	<	t.join();
513	>	awaitTermination(t);
514		}
515
341	–
516		/**
517	<	* TryAcquire on exclusively held sync fails
517	>	* tryAcquire on exclusively held sync fails
518		*/
519	<	public void testTryAcquireWhenSynced() throws InterruptedException {
519	>	public void testTryAcquireWhenSynced() {
520		final Mutex sync = new Mutex();
521	<	sync.acquire(1);
522	<	Thread t = new Thread(new CheckedRunnable() {
521	>	sync.acquire();
522	>	Thread t = newStartedThread(new CheckedRunnable() {
523		public void realRun() {
524	<	assertFalse(sync.tryAcquire(1));
524	>	assertFalse(sync.tryAcquire());
525		}});
526
527	<	t.start();
528	<	t.join();
355	<	sync.release(1);
527	>	awaitTermination(t);
528	>	sync.release();
529		}
530
531		/**
532		* tryAcquireNanos on an exclusively held sync times out
533		*/
534	<	public void testAcquireNanos_Timeout() throws InterruptedException {
534	>	public void testAcquireNanos_Timeout() {
535		final Mutex sync = new Mutex();
536	<	sync.acquire(1);
537	<	Thread t = new Thread(new CheckedRunnable() {
536	>	sync.acquire();
537	>	Thread t = newStartedThread(new CheckedRunnable() {
538		public void realRun() throws InterruptedException {
539	<	long nanos = MILLISECONDS.toNanos(SHORT_DELAY_MS);
540	<	assertFalse(sync.tryAcquireNanos(1, nanos));
539	>	long startTime = System.nanoTime();
540	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
541	>	assertFalse(sync.tryAcquireNanos(nanos));
542	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
543		}});
544
545	<	t.start();
546	<	t.join();
372	<	sync.release(1);
545	>	awaitTermination(t);
546	>	sync.release();
547		}
548
375	–
549		/**
550		* getState is true when acquired and false when not
551		*/
552	<	public void testGetState() throws InterruptedException {
552	>	public void testGetState() {
553		final Mutex sync = new Mutex();
554	<	sync.acquire(1);
554	>	sync.acquire();
555		assertTrue(sync.isHeldExclusively());
556	<	sync.release(1);
556	>	sync.release();
557		assertFalse(sync.isHeldExclusively());
558	<	Thread t = new Thread(new CheckedRunnable() {
558	>
559	>	final BooleanLatch acquired = new BooleanLatch();
560	>	final BooleanLatch done = new BooleanLatch();
561	>	Thread t = newStartedThread(new CheckedRunnable() {
562		public void realRun() throws InterruptedException {
563	<	sync.acquire(1);
564	<	Thread.sleep(SMALL_DELAY_MS);
565	<	sync.release(1);
563	>	sync.acquire();
564	>	assertTrue(acquired.releaseShared(0));
565	>	done.acquireShared(0);
566	>	sync.release();
567		}});
568
569	<	t.start();
393	<	Thread.sleep(SHORT_DELAY_MS);
569	>	acquired.acquireShared(0);
570		assertTrue(sync.isHeldExclusively());
571	<	t.join();
571	>	assertTrue(done.releaseShared(0));
572	>	awaitTermination(t);
573		assertFalse(sync.isHeldExclusively());
574		}
575
399	–
400	–	/**
401	–	* acquireInterruptibly is interruptible.
402	–	*/
403	–	public void testAcquireInterruptibly1() throws InterruptedException {
404	–	final Mutex sync = new Mutex();
405	–	sync.acquire(1);
406	–	Thread t = new Thread(new InterruptedSyncRunnable(sync));
407	–
408	–	t.start();
409	–	Thread.sleep(SHORT_DELAY_MS);
410	–	t.interrupt();
411	–	Thread.sleep(SHORT_DELAY_MS);
412	–	sync.release(1);
413	–	t.join();
414	–	}
415	–
576		/**
577		* acquireInterruptibly succeeds when released, else is interruptible
578		*/
579	<	public void testAcquireInterruptibly2() throws InterruptedException {
579	>	public void testAcquireInterruptibly() throws InterruptedException {
580		final Mutex sync = new Mutex();
581	<	sync.acquireInterruptibly(1);
582	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
583	<	t.start();
584	<	Thread.sleep(SHORT_DELAY_MS);
581	>	final BooleanLatch threadStarted = new BooleanLatch();
582	>	sync.acquireInterruptibly();
583	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
584	>	public void realRun() throws InterruptedException {
585	>	assertTrue(threadStarted.releaseShared(0));
586	>	sync.acquireInterruptibly();
587	>	}});
588	>
589	>	threadStarted.acquireShared(0);
590	>	waitForQueuedThread(sync, t);
591		t.interrupt();
592	+	awaitTermination(t);
593		assertTrue(sync.isHeldExclusively());
427	–	t.join();
594		}
595
596		/**
#	Line 432 | Line 598 | public class AbstractQueuedSynchronizerT
598		*/
599		public void testOwns() {
600		final Mutex sync = new Mutex();
601	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
601	>	final ConditionObject c = sync.newCondition();
602		final Mutex sync2 = new Mutex();
603		assertTrue(sync.owns(c));
604		assertFalse(sync2.owns(c));
#	Line 441 | Line 607 | public class AbstractQueuedSynchronizerT
607		/**
608		* Calling await without holding sync throws IllegalMonitorStateException
609		*/
610	<	public void testAwait_IllegalMonitor() throws InterruptedException {
610	>	public void testAwait_IMSE() {
611		final Mutex sync = new Mutex();
612	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
613	<	try {
614	<	c.await();
615	<	shouldThrow();
616	<	} catch (IllegalMonitorStateException success) {}
612	>	final ConditionObject c = sync.newCondition();
613	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
614	>	long startTime = System.nanoTime();
615	>	try {
616	>	await(c, awaitMethod);
617	>	shouldThrow();
618	>	} catch (IllegalMonitorStateException success) {
619	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
620	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
621	>	}
622		}
623
624		/**
625		* Calling signal without holding sync throws IllegalMonitorStateException
626		*/
627	<	public void testSignal_IllegalMonitor() {
627	>	public void testSignal_IMSE() {
628		final Mutex sync = new Mutex();
629	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
629	>	final ConditionObject c = sync.newCondition();
630		try {
631		c.signal();
632		shouldThrow();
633		} catch (IllegalMonitorStateException success) {}
634	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
635		}
636
637		/**
638	<	* awaitNanos without a signal times out
638	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
639		*/
640	<	public void testAwaitNanos_Timeout() throws InterruptedException {
640	>	public void testSignalAll_IMSE() {
641		final Mutex sync = new Mutex();
642	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
643	<	sync.acquire(1);
644	<	long t = c.awaitNanos(100);
645	<	assertTrue(t <= 0);
646	<	sync.release(1);
475	<	}
476	<
477	<	/**
478	<	* Timed await without a signal times out
479	<	*/
480	<	public void testAwait_Timeout() throws InterruptedException {
481	<	final Mutex sync = new Mutex();
482	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
483	<	sync.acquire(1);
484	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
485	<	sync.release(1);
642	>	final ConditionObject c = sync.newCondition();
643	>	try {
644	>	c.signalAll();
645	>	shouldThrow();
646	>	} catch (IllegalMonitorStateException success) {}
647		}
648
649		/**
650	<	* awaitUntil without a signal times out
650	>	* await/awaitNanos/awaitUntil without a signal times out
651		*/
652	<	public void testAwaitUntil_Timeout() throws InterruptedException {
652	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
653	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
654	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
655	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
656		final Mutex sync = new Mutex();
657	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
658	<	sync.acquire(1);
659	<	java.util.Date d = new java.util.Date();
660	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
497	<	sync.release(1);
657	>	final ConditionObject c = sync.newCondition();
658	>	sync.acquire();
659	>	assertAwaitTimesOut(c, awaitMethod);
660	>	sync.release();
661		}
662
663		/**
664	<	* await returns when signalled
664	>	* await/awaitNanos/awaitUntil returns when signalled
665		*/
666	<	public void testAwait() throws InterruptedException {
666	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
667	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
668	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
669	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
670	>	public void testSignal(final AwaitMethod awaitMethod) {
671		final Mutex sync = new Mutex();
672	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
673	<	Thread t = new Thread(new CheckedRunnable() {
672	>	final ConditionObject c = sync.newCondition();
673	>	final BooleanLatch acquired = new BooleanLatch();
674	>	Thread t = newStartedThread(new CheckedRunnable() {
675		public void realRun() throws InterruptedException {
676	<	sync.acquire(1);
677	<	c.await();
678	<	sync.release(1);
676	>	sync.acquire();
677	>	assertTrue(acquired.releaseShared(0));
678	>	await(c, awaitMethod);
679	>	sync.release();
680		}});
681
682	<	t.start();
683	<	Thread.sleep(SHORT_DELAY_MS);
684	<	sync.acquire(1);
682	>	acquired.acquireShared(0);
683	>	sync.acquire();
684	>	assertHasWaitersLocked(sync, c, t);
685	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
686		c.signal();
687	<	sync.release(1);
688	<	t.join(SHORT_DELAY_MS);
689	<	assertFalse(t.isAlive());
687	>	assertHasWaitersLocked(sync, c, NO_THREADS);
688	>	assertHasExclusiveQueuedThreads(sync, t);
689	>	sync.release();
690	>	awaitTermination(t);
691		}
692
522	–
523	–
693		/**
694	<	* hasWaiters throws NPE if null
694	>	* hasWaiters(null) throws NullPointerException
695		*/
696		public void testHasWaitersNPE() {
697		final Mutex sync = new Mutex();
#	Line 533 | Line 702 | public class AbstractQueuedSynchronizerT
702		}
703
704		/**
705	<	* getWaitQueueLength throws NPE if null
705	>	* getWaitQueueLength(null) throws NullPointerException
706		*/
707		public void testGetWaitQueueLengthNPE() {
708		final Mutex sync = new Mutex();
#	Line 543 | Line 712 | public class AbstractQueuedSynchronizerT
712		} catch (NullPointerException success) {}
713		}
714
546	–
715		/**
716	<	* getWaitingThreads throws NPE if null
716	>	* getWaitingThreads(null) throws NullPointerException
717		*/
718		public void testGetWaitingThreadsNPE() {
719		final Mutex sync = new Mutex();
#	Line 555 | Line 723 | public class AbstractQueuedSynchronizerT
723		} catch (NullPointerException success) {}
724		}
725
558	–
726		/**
727	<	* hasWaiters throws IAE if not owned
727	>	* hasWaiters throws IllegalArgumentException if not owned
728		*/
729		public void testHasWaitersIAE() {
730		final Mutex sync = new Mutex();
731	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
731	>	final ConditionObject c = sync.newCondition();
732		final Mutex sync2 = new Mutex();
733		try {
734		sync2.hasWaiters(c);
735		shouldThrow();
736		} catch (IllegalArgumentException success) {}
737	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
738		}
739
740		/**
741	<	* hasWaiters throws IMSE if not synced
741	>	* hasWaiters throws IllegalMonitorStateException if not synced
742		*/
743		public void testHasWaitersIMSE() {
744		final Mutex sync = new Mutex();
745	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
745	>	final ConditionObject c = sync.newCondition();
746		try {
747		sync.hasWaiters(c);
748		shouldThrow();
749		} catch (IllegalMonitorStateException success) {}
750	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
751		}
752
584	–
753		/**
754	<	* getWaitQueueLength throws IAE if not owned
754	>	* getWaitQueueLength throws IllegalArgumentException if not owned
755		*/
756		public void testGetWaitQueueLengthIAE() {
757		final Mutex sync = new Mutex();
758	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
758	>	final ConditionObject c = sync.newCondition();
759		final Mutex sync2 = new Mutex();
760		try {
761		sync2.getWaitQueueLength(c);
762		shouldThrow();
763		} catch (IllegalArgumentException success) {}
764	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
765		}
766
767		/**
768	<	* getWaitQueueLength throws IMSE if not synced
768	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
769		*/
770		public void testGetWaitQueueLengthIMSE() {
771		final Mutex sync = new Mutex();
772	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
772	>	final ConditionObject c = sync.newCondition();
773		try {
774		sync.getWaitQueueLength(c);
775		shouldThrow();
776		} catch (IllegalMonitorStateException success) {}
777	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
778		}
779
610	–
780		/**
781	<	* getWaitingThreads throws IAE if not owned
781	>	* getWaitingThreads throws IllegalArgumentException if not owned
782		*/
783		public void testGetWaitingThreadsIAE() {
784		final Mutex sync = new Mutex();
785	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
785	>	final ConditionObject c = sync.newCondition();
786		final Mutex sync2 = new Mutex();
787		try {
788		sync2.getWaitingThreads(c);
789		shouldThrow();
790		} catch (IllegalArgumentException success) {}
791	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
792		}
793
794		/**
795	<	* getWaitingThreads throws IMSE if not synced
795	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
796		*/
797		public void testGetWaitingThreadsIMSE() {
798		final Mutex sync = new Mutex();
799	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
799	>	final ConditionObject c = sync.newCondition();
800		try {
801		sync.getWaitingThreads(c);
802		shouldThrow();
803		} catch (IllegalMonitorStateException success) {}
804	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
805		}
806
636	–
637	–
807		/**
808		* hasWaiters returns true when a thread is waiting, else false
809		*/
810	<	public void testHasWaiters() throws InterruptedException {
810	>	public void testHasWaiters() {
811		final Mutex sync = new Mutex();
812	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
813	<	Thread t = new Thread(new CheckedRunnable() {
812	>	final ConditionObject c = sync.newCondition();
813	>	final BooleanLatch acquired = new BooleanLatch();
814	>	Thread t = newStartedThread(new CheckedRunnable() {
815		public void realRun() throws InterruptedException {
816	<	sync.acquire(1);
816	>	sync.acquire();
817	>	assertHasWaitersLocked(sync, c, NO_THREADS);
818		assertFalse(sync.hasWaiters(c));
819	<	assertEquals(0, sync.getWaitQueueLength(c));
819	>	assertTrue(acquired.releaseShared(0));
820		c.await();
821	<	sync.release(1);
821	>	sync.release();
822		}});
823
824	<	t.start();
825	<	Thread.sleep(SHORT_DELAY_MS);
826	<	sync.acquire(1);
824	>	acquired.acquireShared(0);
825	>	sync.acquire();
826	>	assertHasWaitersLocked(sync, c, t);
827	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
828		assertTrue(sync.hasWaiters(c));
657	–	assertEquals(1, sync.getWaitQueueLength(c));
829		c.signal();
830	<	sync.release(1);
831	<	Thread.sleep(SHORT_DELAY_MS);
661	<	sync.acquire(1);
830	>	assertHasWaitersLocked(sync, c, NO_THREADS);
831	>	assertHasExclusiveQueuedThreads(sync, t);
832		assertFalse(sync.hasWaiters(c));
833	<	assertEquals(0, sync.getWaitQueueLength(c));
834	<	sync.release(1);
835	<	t.join(SHORT_DELAY_MS);
836	<	assertFalse(t.isAlive());
833	>	sync.release();
834	>
835	>	awaitTermination(t);
836	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
837		}
838
839		/**
840		* getWaitQueueLength returns number of waiting threads
841		*/
842	<	public void testGetWaitQueueLength() throws InterruptedException {
842	>	public void testGetWaitQueueLength() {
843		final Mutex sync = new Mutex();
844	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
845	<	Thread t1 = new Thread(new CheckedRunnable() {
844	>	final ConditionObject c = sync.newCondition();
845	>	final BooleanLatch acquired1 = new BooleanLatch();
846	>	final BooleanLatch acquired2 = new BooleanLatch();
847	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
848		public void realRun() throws InterruptedException {
849	<	sync.acquire(1);
850	<	assertFalse(sync.hasWaiters(c));
849	>	sync.acquire();
850	>	assertHasWaitersLocked(sync, c, NO_THREADS);
851		assertEquals(0, sync.getWaitQueueLength(c));
852	+	assertTrue(acquired1.releaseShared(0));
853		c.await();
854	<	sync.release(1);
854	>	sync.release();
855		}});
856	+	acquired1.acquireShared(0);
857	+	sync.acquire();
858	+	assertHasWaitersLocked(sync, c, t1);
859	+	assertEquals(1, sync.getWaitQueueLength(c));
860	+	sync.release();
861
862	<	Thread t2 = new Thread(new CheckedRunnable() {
862	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
863		public void realRun() throws InterruptedException {
864	<	sync.acquire(1);
865	<	assertTrue(sync.hasWaiters(c));
864	>	sync.acquire();
865	>	assertHasWaitersLocked(sync, c, t1);
866		assertEquals(1, sync.getWaitQueueLength(c));
867	+	assertTrue(acquired2.releaseShared(0));
868		c.await();
869	<	sync.release(1);
869	>	sync.release();
870		}});
871	<
872	<	t1.start();
873	<	Thread.sleep(SHORT_DELAY_MS);
874	<	t2.start();
696	<	Thread.sleep(SHORT_DELAY_MS);
697	<	sync.acquire(1);
698	<	assertTrue(sync.hasWaiters(c));
871	>	acquired2.acquireShared(0);
872	>	sync.acquire();
873	>	assertHasWaitersLocked(sync, c, t1, t2);
874	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
875		assertEquals(2, sync.getWaitQueueLength(c));
876		c.signalAll();
877	<	sync.release(1);
878	<	Thread.sleep(SHORT_DELAY_MS);
703	<	sync.acquire(1);
704	<	assertFalse(sync.hasWaiters(c));
877	>	assertHasWaitersLocked(sync, c, NO_THREADS);
878	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
879		assertEquals(0, sync.getWaitQueueLength(c));
880	<	sync.release(1);
881	<	t1.join(SHORT_DELAY_MS);
882	<	t2.join(SHORT_DELAY_MS);
883	<	assertFalse(t1.isAlive());
884	<	assertFalse(t2.isAlive());
880	>	sync.release();
881	>
882	>	awaitTermination(t1);
883	>	awaitTermination(t2);
884	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
885		}
886
887		/**
888		* getWaitingThreads returns only and all waiting threads
889		*/
890	<	public void testGetWaitingThreads() throws InterruptedException {
890	>	public void testGetWaitingThreads() {
891		final Mutex sync = new Mutex();
892	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
893	<	Thread t1 = new Thread(new CheckedRunnable() {
892	>	final ConditionObject c = sync.newCondition();
893	>	final BooleanLatch acquired1 = new BooleanLatch();
894	>	final BooleanLatch acquired2 = new BooleanLatch();
895	>	final Thread t1 = new Thread(new CheckedRunnable() {
896		public void realRun() throws InterruptedException {
897	<	sync.acquire(1);
897	>	sync.acquire();
898	>	assertHasWaitersLocked(sync, c, NO_THREADS);
899		assertTrue(sync.getWaitingThreads(c).isEmpty());
900	+	assertTrue(acquired1.releaseShared(0));
901		c.await();
902	<	sync.release(1);
902	>	sync.release();
903		}});
904
905	<	Thread t2 = new Thread(new CheckedRunnable() {
905	>	final Thread t2 = new Thread(new CheckedRunnable() {
906		public void realRun() throws InterruptedException {
907	<	sync.acquire(1);
907	>	sync.acquire();
908	>	assertHasWaitersLocked(sync, c, t1);
909	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
910		assertFalse(sync.getWaitingThreads(c).isEmpty());
911	+	assertEquals(1, sync.getWaitingThreads(c).size());
912	+	assertTrue(acquired2.releaseShared(0));
913		c.await();
914	<	sync.release(1);
914	>	sync.release();
915		}});
916
917	<	sync.acquire(1);
917	>	sync.acquire();
918	>	assertHasWaitersLocked(sync, c, NO_THREADS);
919	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
920	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
921		assertTrue(sync.getWaitingThreads(c).isEmpty());
922	<	sync.release(1);
922	>	assertEquals(0, sync.getWaitingThreads(c).size());
923	>	sync.release();
924	>
925		t1.start();
926	<	Thread.sleep(SHORT_DELAY_MS);
926	>	acquired1.acquireShared(0);
927	>	sync.acquire();
928	>	assertHasWaitersLocked(sync, c, t1);
929	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
930	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
931	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
932	>	assertEquals(1, sync.getWaitingThreads(c).size());
933	>	sync.release();
934	>
935		t2.start();
936	<	Thread.sleep(SHORT_DELAY_MS);
937	<	sync.acquire(1);
938	<	assertTrue(sync.hasWaiters(c));
936	>	acquired2.acquireShared(0);
937	>	sync.acquire();
938	>	assertHasWaitersLocked(sync, c, t1, t2);
939	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
940		assertTrue(sync.getWaitingThreads(c).contains(t1));
941		assertTrue(sync.getWaitingThreads(c).contains(t2));
942	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
943	+	assertEquals(2, sync.getWaitingThreads(c).size());
944		c.signalAll();
945	<	sync.release(1);
946	<	Thread.sleep(SHORT_DELAY_MS);
947	<	sync.acquire(1);
948	<	assertFalse(sync.hasWaiters(c));
945	>	assertHasWaitersLocked(sync, c, NO_THREADS);
946	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
947	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
948	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
949		assertTrue(sync.getWaitingThreads(c).isEmpty());
950	<	sync.release(1);
951	<	t1.join(SHORT_DELAY_MS);
754	<	t2.join(SHORT_DELAY_MS);
755	<	assertFalse(t1.isAlive());
756	<	assertFalse(t2.isAlive());
757	<	}
758	<
950	>	assertEquals(0, sync.getWaitingThreads(c).size());
951	>	sync.release();
952
953	+	awaitTermination(t1);
954	+	awaitTermination(t2);
955	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
956	+	}
957
958		/**
959	<	* awaitUninterruptibly doesn't abort on interrupt
959	>	* awaitUninterruptibly is uninterruptible
960		*/
961	<	public void testAwaitUninterruptibly() throws InterruptedException {
961	>	public void testAwaitUninterruptibly() {
962		final Mutex sync = new Mutex();
963	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
964	<	Thread t = new Thread(new CheckedRunnable() {
963	>	final ConditionObject c = sync.newCondition();
964	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
965	>	Thread t = newStartedThread(new CheckedRunnable() {
966		public void realRun() {
967	<	sync.acquire(1);
967	>	sync.acquire();
968	>	assertTrue(pleaseInterrupt.releaseShared(0));
969		c.awaitUninterruptibly();
970	<	sync.release(1);
970	>	assertTrue(Thread.interrupted());
971	>	assertHasWaitersLocked(sync, c, NO_THREADS);
972	>	sync.release();
973		}});
974
975	<	t.start();
976	<	Thread.sleep(SHORT_DELAY_MS);
975	>	pleaseInterrupt.acquireShared(0);
976	>	sync.acquire();
977	>	assertHasWaitersLocked(sync, c, t);
978	>	sync.release();
979		t.interrupt();
980	<	sync.acquire(1);
980	>	assertHasWaitersUnlocked(sync, c, t);
981	>	assertThreadStaysAlive(t);
982	>	sync.acquire();
983	>	assertHasWaitersLocked(sync, c, t);
984	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
985		c.signal();
986	<	sync.release(1);
987	<	t.join(SHORT_DELAY_MS);
988	<	assertFalse(t.isAlive());
989	<	}
783	<
784	<	/**
785	<	* await is interruptible
786	<	*/
787	<	public void testAwait_Interrupt() throws InterruptedException {
788	<	final Mutex sync = new Mutex();
789	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
790	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
791	<	public void realRun() throws InterruptedException {
792	<	sync.acquire(1);
793	<	c.await();
794	<	}});
795	<
796	<	t.start();
797	<	Thread.sleep(SHORT_DELAY_MS);
798	<	t.interrupt();
799	<	t.join(SHORT_DELAY_MS);
800	<	assertFalse(t.isAlive());
801	<	}
802	<
803	<	/**
804	<	* awaitNanos is interruptible
805	<	*/
806	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
807	<	final Mutex sync = new Mutex();
808	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
809	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
810	<	public void realRun() throws InterruptedException {
811	<	sync.acquire(1);
812	<	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
813	<	}});
814	<
815	<	t.start();
816	<	Thread.sleep(SHORT_DELAY_MS);
817	<	t.interrupt();
818	<	t.join(SHORT_DELAY_MS);
819	<	assertFalse(t.isAlive());
986	>	assertHasWaitersLocked(sync, c, NO_THREADS);
987	>	assertHasExclusiveQueuedThreads(sync, t);
988	>	sync.release();
989	>	awaitTermination(t);
990		}
991
992		/**
993	<	* awaitUntil is interruptible
993	>	* await/awaitNanos/awaitUntil is interruptible
994		*/
995	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
995	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
996	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
997	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
998	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
999	>	public void testInterruptible(final AwaitMethod awaitMethod) {
1000		final Mutex sync = new Mutex();
1001	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1002	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1001	>	final ConditionObject c = sync.newCondition();
1002	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1003	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1004		public void realRun() throws InterruptedException {
1005	<	sync.acquire(1);
1006	<	java.util.Date d = new java.util.Date();
1007	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1005	>	sync.acquire();
1006	>	assertTrue(pleaseInterrupt.releaseShared(0));
1007	>	await(c, awaitMethod);
1008		}});
1009
1010	<	t.start();
836	<	Thread.sleep(SHORT_DELAY_MS);
1010	>	pleaseInterrupt.acquireShared(0);
1011		t.interrupt();
1012	<	t.join(SHORT_DELAY_MS);
839	<	assertFalse(t.isAlive());
1012	>	awaitTermination(t);
1013		}
1014
1015		/**
1016		* signalAll wakes up all threads
1017		*/
1018	<	public void testSignalAll() throws InterruptedException {
1019	<	final Mutex sync = new Mutex();
1020	<	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1021	<	Thread t1 = new Thread(new CheckedRunnable() {
1018	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1019	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1020	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1021	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1022	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1023	>	final Mutex sync = new Mutex();
1024	>	final ConditionObject c = sync.newCondition();
1025	>	final BooleanLatch acquired1 = new BooleanLatch();
1026	>	final BooleanLatch acquired2 = new BooleanLatch();
1027	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1028		public void realRun() throws InterruptedException {
1029	<	sync.acquire(1);
1030	<	c.await();
1031	<	sync.release(1);
1029	>	sync.acquire();
1030	>	acquired1.releaseShared(0);
1031	>	await(c, awaitMethod);
1032	>	sync.release();
1033		}});
1034
1035	<	Thread t2 = new Thread(new CheckedRunnable() {
1035	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1036		public void realRun() throws InterruptedException {
1037	<	sync.acquire(1);
1038	<	c.await();
1039	<	sync.release(1);
1037	>	sync.acquire();
1038	>	acquired2.releaseShared(0);
1039	>	await(c, awaitMethod);
1040	>	sync.release();
1041		}});
1042
1043	<	t1.start();
1044	<	t2.start();
1045	<	Thread.sleep(SHORT_DELAY_MS);
1046	<	sync.acquire(1);
1043	>	acquired1.acquireShared(0);
1044	>	acquired2.acquireShared(0);
1045	>	sync.acquire();
1046	>	assertHasWaitersLocked(sync, c, t1, t2);
1047	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1048		c.signalAll();
1049	<	sync.release(1);
1050	<	t1.join(SHORT_DELAY_MS);
1051	<	t2.join(SHORT_DELAY_MS);
1052	<	assertFalse(t1.isAlive());
1053	<	assertFalse(t2.isAlive());
1049	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1050	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1051	>	sync.release();
1052	>	awaitTermination(t1);
1053	>	awaitTermination(t2);
1054		}
1055
874	–
1056		/**
1057		* toString indicates current state
1058		*/
1059		public void testToString() {
1060		Mutex sync = new Mutex();
1061	<	String us = sync.toString();
1062	<	assertTrue(us.indexOf("State = 0") >= 0);
1063	<	sync.acquire(1);
883	<	String ls = sync.toString();
884	<	assertTrue(ls.indexOf("State = 1") >= 0);
1061	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1062	>	sync.acquire();
1063	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1064		}
1065
1066		/**
1067	<	* A serialized AQS deserializes with current state
1068	<	*/
1069	<	public void testSerialization() throws Exception {
1070	<	Mutex l = new Mutex();
1071	<	l.acquire(1);
1072	<	assertTrue(l.isHeldExclusively());
1073	<
1074	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1075	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
897	<	out.writeObject(l);
898	<	out.close();
899	<
900	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
901	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
902	<	Mutex r = (Mutex) in.readObject();
903	<	assertTrue(r.isHeldExclusively());
904	<	}
1067	>	* A serialized AQS deserializes with current state, but no queued threads
1068	>	*/
1069	>	public void testSerialization() {
1070	>	Mutex sync = new Mutex();
1071	>	assertFalse(serialClone(sync).isHeldExclusively());
1072	>	sync.acquire();
1073	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1074	>	waitForQueuedThread(sync, t);
1075	>	assertTrue(sync.isHeldExclusively());
1076
1077	+	Mutex clone = serialClone(sync);
1078	+	assertTrue(clone.isHeldExclusively());
1079	+	assertHasExclusiveQueuedThreads(sync, t);
1080	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1081	+	t.interrupt();
1082	+	awaitTermination(t);
1083	+	sync.release();
1084	+	assertFalse(sync.isHeldExclusively());
1085	+	assertTrue(clone.isHeldExclusively());
1086	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1087	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1088	+	}
1089
1090		/**
1091		* tryReleaseShared setting state changes getState
#	Line 910 | Line 1093 | public class AbstractQueuedSynchronizerT
1093		public void testGetStateWithReleaseShared() {
1094		final BooleanLatch l = new BooleanLatch();
1095		assertFalse(l.isSignalled());
1096	<	l.releaseShared(0);
1096	>	assertTrue(l.releaseShared(0));
1097		assertTrue(l.isSignalled());
1098		}
1099
#	Line 920 | Line 1103 | public class AbstractQueuedSynchronizerT
1103		public void testReleaseShared() {
1104		final BooleanLatch l = new BooleanLatch();
1105		assertFalse(l.isSignalled());
1106	<	l.releaseShared(0);
1106	>	assertTrue(l.releaseShared(0));
1107		assertTrue(l.isSignalled());
1108	<	l.releaseShared(0);
1108	>	assertTrue(l.releaseShared(0));
1109		assertTrue(l.isSignalled());
1110		}
1111
1112		/**
1113		* acquireSharedInterruptibly returns after release, but not before
1114		*/
1115	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1115	>	public void testAcquireSharedInterruptibly() {
1116		final BooleanLatch l = new BooleanLatch();
1117
1118	<	Thread t = new Thread(new CheckedRunnable() {
1118	>	Thread t = newStartedThread(new CheckedRunnable() {
1119		public void realRun() throws InterruptedException {
1120		assertFalse(l.isSignalled());
1121		l.acquireSharedInterruptibly(0);
1122		assertTrue(l.isSignalled());
1123	+	l.acquireSharedInterruptibly(0);
1124	+	assertTrue(l.isSignalled());
1125		}});
1126
1127	<	t.start();
1127	>	waitForQueuedThread(l, t);
1128		assertFalse(l.isSignalled());
1129	<	Thread.sleep(SHORT_DELAY_MS);
1130	<	l.releaseShared(0);
1129	>	assertThreadStaysAlive(t);
1130	>	assertHasSharedQueuedThreads(l, t);
1131	>	assertTrue(l.releaseShared(0));
1132		assertTrue(l.isSignalled());
1133	<	t.join();
1133	>	awaitTermination(t);
1134		}
1135
950	–
1136		/**
1137	<	* acquireSharedTimed returns after release
1137	>	* tryAcquireSharedNanos returns after release, but not before
1138		*/
1139	<	public void testAcquireSharedTimed() throws InterruptedException {
1139	>	public void testTryAcquireSharedNanos() {
1140		final BooleanLatch l = new BooleanLatch();
1141
1142	<	Thread t = new Thread(new CheckedRunnable() {
1142	>	Thread t = newStartedThread(new CheckedRunnable() {
1143		public void realRun() throws InterruptedException {
1144		assertFalse(l.isSignalled());
1145	<	long nanos = MILLISECONDS.toNanos(MEDIUM_DELAY_MS);
1145	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1146	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1147	>	assertTrue(l.isSignalled());
1148		assertTrue(l.tryAcquireSharedNanos(0, nanos));
1149		assertTrue(l.isSignalled());
1150		}});
1151
1152	<	t.start();
1152	>	waitForQueuedThread(l, t);
1153		assertFalse(l.isSignalled());
1154	<	Thread.sleep(SHORT_DELAY_MS);
1155	<	l.releaseShared(0);
1154	>	assertThreadStaysAlive(t);
1155	>	assertTrue(l.releaseShared(0));
1156		assertTrue(l.isSignalled());
1157	<	t.join();
1157	>	awaitTermination(t);
1158		}
1159
1160		/**
1161	<	* acquireSharedInterruptibly throws IE if interrupted before released
1161	>	* acquireSharedInterruptibly is interruptible
1162		*/
1163	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1163	>	public void testAcquireSharedInterruptibly_Interruptible() {
1164		final BooleanLatch l = new BooleanLatch();
1165	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1165	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1166		public void realRun() throws InterruptedException {
1167		assertFalse(l.isSignalled());
1168		l.acquireSharedInterruptibly(0);
1169		}});
1170
1171	<	t.start();
1171	>	waitForQueuedThread(l, t);
1172		assertFalse(l.isSignalled());
1173		t.interrupt();
1174	<	t.join();
1174	>	awaitTermination(t);
1175	>	assertFalse(l.isSignalled());
1176		}
1177
1178		/**
1179	<	* acquireSharedTimed throws IE if interrupted before released
1179	>	* tryAcquireSharedNanos is interruptible
1180		*/
1181	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1181	>	public void testTryAcquireSharedNanos_Interruptible() {
1182		final BooleanLatch l = new BooleanLatch();
1183	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1183	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1184		public void realRun() throws InterruptedException {
1185		assertFalse(l.isSignalled());
1186	<	long nanos = MILLISECONDS.toNanos(SMALL_DELAY_MS);
1186	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1187		l.tryAcquireSharedNanos(0, nanos);
1188		}});
1189
1190	<	t.start();
1003	<	Thread.sleep(SHORT_DELAY_MS);
1190	>	waitForQueuedThread(l, t);
1191		assertFalse(l.isSignalled());
1192		t.interrupt();
1193	<	t.join();
1193	>	awaitTermination(t);
1194	>	assertFalse(l.isSignalled());
1195		}
1196
1197		/**
1198	<	* acquireSharedTimed times out if not released before timeout
1198	>	* tryAcquireSharedNanos times out if not released before timeout
1199		*/
1200	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1200	>	public void testTryAcquireSharedNanos_Timeout() {
1201		final BooleanLatch l = new BooleanLatch();
1202	<	Thread t = new Thread(new CheckedRunnable() {
1202	>	final BooleanLatch observedQueued = new BooleanLatch();
1203	>	Thread t = newStartedThread(new CheckedRunnable() {
1204		public void realRun() throws InterruptedException {
1205		assertFalse(l.isSignalled());
1206	<	long nanos = MILLISECONDS.toNanos(SMALL_DELAY_MS);
1207	<	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1206	>	for (long millis = timeoutMillis();
1207	>	!observedQueued.isSignalled();
1208	>	millis *= 2) {
1209	>	long nanos = MILLISECONDS.toNanos(millis);
1210	>	long startTime = System.nanoTime();
1211	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1212	>	assertTrue(millisElapsedSince(startTime) >= millis);
1213	>	}
1214	>	assertFalse(l.isSignalled());
1215		}});
1216
1217	<	t.start();
1218	<	Thread.sleep(SHORT_DELAY_MS);
1217	>	waitForQueuedThread(l, t);
1218	>	observedQueued.releaseShared(0);
1219		assertFalse(l.isSignalled());
1220	<	t.join();
1220	>	awaitTermination(t);
1221	>	assertFalse(l.isSignalled());
1222	>	}
1223	>
1224	>	/**
1225	>	* awaitNanos/timed await with 0 wait times out immediately
1226	>	*/
1227	>	public void testAwait_Zero() throws InterruptedException {
1228	>	final Mutex sync = new Mutex();
1229	>	final ConditionObject c = sync.newCondition();
1230	>	sync.acquire();
1231	>	assertTrue(c.awaitNanos(0L) <= 0);
1232	>	assertFalse(c.await(0L, NANOSECONDS));
1233	>	sync.release();
1234	>	}
1235	>
1236	>	/**
1237	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1238	>	*/
1239	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1240	>	final Mutex sync = new Mutex();
1241	>	final ConditionObject c = sync.newCondition();
1242	>	sync.acquire();
1243	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1244	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1245	>	sync.release();
1246		}
1247
1248		}

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