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Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.13 by jsr166, Sat Nov 21 17:54:04 2009 UTC vs.
Revision 1.46 by jsr166, Tue Aug 13 00:54:51 2019 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.ThreadLocalRandom;
16	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer;
17	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject;
18
19	+	import junit.framework.Test;
20	+	import junit.framework.TestSuite;
21	+
22	+	@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom
23		public class AbstractQueuedLongSynchronizerTest extends JSR166TestCase {
24		public static void main(String[] args) {
25	<	junit.textui.TestRunner.run (suite());
25	>	main(suite(), args);
26		}
27		public static Test suite() {
28		return new TestSuite(AbstractQueuedLongSynchronizerTest.class);
29		}
30
31		/**
32	<	* A simple mutex class, adapted from the
33	<	* AbstractQueuedLongSynchronizer javadoc.  Exclusive acquire tests
34	<	* exercise this as a sample user extension.  Other
35	<	* methods/features of AbstractQueuedLongSynchronizerTest are tested
36	<	* via other test classes, including those for ReentrantLock,
31	<	* ReentrantReadWriteLock, and Semaphore
32	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
33	>	* acquire tests exercise this as a sample user extension.
34	>	*
35	>	* Unlike the javadoc sample, we don't track owner thread via
36	>	* AbstractOwnableSynchronizer methods.
37		*/
38		static class Mutex extends AbstractQueuedLongSynchronizer {
39	<	// Use value > 32 bits for locked state
40	<	static final long LOCKED = 1 << 48;
41	<	public boolean isHeldExclusively() {
42	<	return getState() == LOCKED;
39	>	/** An eccentric value > 32 bits for locked synchronizer state. */
40	>	static final long LOCKED = (1L << 63) | (1L << 15);
41	>
42	>	static final long UNLOCKED = 0;
43	>
44	>	/** Owner thread is untracked, so this is really just isLocked(). */
45	>	@Override public boolean isHeldExclusively() {
46	>	long state = getState();
47	>	assertTrue(state == UNLOCKED || state == LOCKED);
48	>	return state == LOCKED;
49		}
50
51	<	public boolean tryAcquire(long acquires) {
52	<	return compareAndSetState(0, LOCKED);
51	>	@Override protected boolean tryAcquire(long acquires) {
52	>	assertEquals(LOCKED, acquires);
53	>	return compareAndSetState(UNLOCKED, LOCKED);
54		}
55
56	<	public boolean tryRelease(long releases) {
57	<	if (getState() == 0) throw new IllegalMonitorStateException();
58	<	setState(0);
56	>	@Override protected boolean tryRelease(long releases) {
57	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
58	>	setState(UNLOCKED);
59		return true;
60		}
61
62	<	public AbstractQueuedLongSynchronizer.ConditionObject newCondition() { return new AbstractQueuedLongSynchronizer.ConditionObject(); }
62	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
63	>	return tryAcquireNanos(LOCKED, nanos);
64	>	}
65
66	<	}
66	>	public boolean tryAcquire() {
67	>	return tryAcquire(LOCKED);
68	>	}
69	>
70	>	public boolean tryRelease() {
71	>	return tryRelease(LOCKED);
72	>	}
73
74	+	public void acquire() {
75	+	acquire(LOCKED);
76	+	}
77	+
78	+	public void acquireInterruptibly() throws InterruptedException {
79	+	acquireInterruptibly(LOCKED);
80	+	}
81	+
82	+	public void release() {
83	+	release(LOCKED);
84	+	}
85	+
86	+	/** Faux-Implements Lock.newCondition(). */
87	+	public ConditionObject newCondition() {
88	+	return new ConditionObject();
89	+	}
90	+	}
91
92		/**
93	<	* A simple latch class, to test shared mode.
93	>	* A minimal latch class, to test shared mode.
94		*/
95		static class BooleanLatch extends AbstractQueuedLongSynchronizer {
96		public boolean isSignalled() { return getState() != 0; }
97
98		public long tryAcquireShared(long ignore) {
99	<	return isSignalled()? 1 : -1;
99	>	return isSignalled() ? 1 : -1;
100		}
101
102		public boolean tryReleaseShared(long ignore) {
103	<	setState(1 << 62);
103	>	setState(1L << 62);
104		return true;
105		}
106		}
#	Line 74 | Line 111 | public class AbstractQueuedLongSynchroni
111		*/
112		class InterruptibleSyncRunnable extends CheckedRunnable {
113		final Mutex sync;
114	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
114	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
115		public void realRun() throws InterruptedException {
116	<	sync.acquireInterruptibly(1);
116	>	sync.acquireInterruptibly();
117		}
118		}
119
83	–
120		/**
121		* A runnable calling acquireInterruptibly that expects to be
122		* interrupted.
123		*/
124		class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
125		final Mutex sync;
126	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
126	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
127		public void realRun() throws InterruptedException {
128	<	sync.acquireInterruptibly(1);
128	>	sync.acquireInterruptibly();
129	>	}
130	>	}
131	>
132	>	/** A constant to clarify calls to checking methods below. */
133	>	static final Thread[] NO_THREADS = new Thread[0];
134	>
135	>	/**
136	>	* Spin-waits until sync.isQueued(t) becomes true.
137	>	*/
138	>	void waitForQueuedThread(AbstractQueuedLongSynchronizer sync,
139	>	Thread t) {
140	>	long startTime = System.nanoTime();
141	>	while (!sync.isQueued(t)) {
142	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
143	>	throw new AssertionError("timed out");
144	>	Thread.yield();
145	>	}
146	>	assertTrue(t.isAlive());
147	>	}
148	>
149	>	/**
150	>	* Checks that sync has exactly the given queued threads.
151	>	*/
152	>	void assertHasQueuedThreads(AbstractQueuedLongSynchronizer sync,
153	>	Thread... expected) {
154	>	Collection<Thread> actual = sync.getQueuedThreads();
155	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
156	>	assertEquals(expected.length, sync.getQueueLength());
157	>	assertEquals(expected.length, actual.size());
158	>	assertEquals(expected.length == 0, actual.isEmpty());
159	>	assertEquals(new HashSet<Thread>(actual),
160	>	new HashSet<Thread>(Arrays.asList(expected)));
161	>	}
162	>
163	>	/**
164	>	* Checks that sync has exactly the given (exclusive) queued threads.
165	>	*/
166	>	void assertHasExclusiveQueuedThreads(AbstractQueuedLongSynchronizer sync,
167	>	Thread... expected) {
168	>	assertHasQueuedThreads(sync, expected);
169	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
170	>	new HashSet<Thread>(sync.getQueuedThreads()));
171	>	assertEquals(0, sync.getSharedQueuedThreads().size());
172	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
173	>	}
174	>
175	>	/**
176	>	* Checks that sync has exactly the given (shared) queued threads.
177	>	*/
178	>	void assertHasSharedQueuedThreads(AbstractQueuedLongSynchronizer sync,
179	>	Thread... expected) {
180	>	assertHasQueuedThreads(sync, expected);
181	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
182	>	new HashSet<Thread>(sync.getQueuedThreads()));
183	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
184	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
185	>	}
186	>
187	>	/**
188	>	* Checks that condition c has exactly the given waiter threads,
189	>	* after acquiring mutex.
190	>	*/
191	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
192	>	Thread... threads) {
193	>	sync.acquire();
194	>	assertHasWaitersLocked(sync, c, threads);
195	>	sync.release();
196	>	}
197	>
198	>	/**
199	>	* Checks that condition c has exactly the given waiter threads.
200	>	*/
201	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
202	>	Thread... threads) {
203	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
204	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
205	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
206	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
207	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
208	>	new HashSet<Thread>(Arrays.asList(threads)));
209	>	}
210	>
211	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
212	>
213	>	/**
214	>	* Awaits condition using the specified AwaitMethod.
215	>	*/
216	>	void await(ConditionObject c, AwaitMethod awaitMethod)
217	>	throws InterruptedException {
218	>	long timeoutMillis = 2 * LONG_DELAY_MS;
219	>	switch (awaitMethod) {
220	>	case await:
221	>	c.await();
222	>	break;
223	>	case awaitTimed:
224	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
225	>	break;
226	>	case awaitNanos:
227	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
228	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
229	>	assertTrue(nanosRemaining > 0);
230	>	break;
231	>	case awaitUntil:
232	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
233	>	break;
234	>	default:
235	>	throw new AssertionError();
236		}
237		}
238
239		/**
240	+	* Checks that awaiting the given condition times out (using the
241	+	* default timeout duration).
242	+	*/
243	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
244	+	final long timeoutMillis = timeoutMillis();
245	+	final long startTime;
246	+	try {
247	+	switch (awaitMethod) {
248	+	case awaitTimed:
249	+	startTime = System.nanoTime();
250	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
251	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
252	+	break;
253	+	case awaitNanos:
254	+	startTime = System.nanoTime();
255	+	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
256	+	long nanosRemaining = c.awaitNanos(timeoutNanos);
257	+	assertTrue(nanosRemaining <= 0);
258	+	assertTrue(nanosRemaining > -MILLISECONDS.toNanos(LONG_DELAY_MS));
259	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
260	+	break;
261	+	case awaitUntil:
262	+	// We shouldn't assume that nanoTime and currentTimeMillis
263	+	// use the same time source, so don't use nanoTime here.
264	+	java.util.Date delayedDate = delayedDate(timeoutMillis);
265	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
266	+	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
267	+	break;
268	+	default:
269	+	throw new UnsupportedOperationException();
270	+	}
271	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
272	+	}
273	+
274	+	/**
275		* isHeldExclusively is false upon construction
276		*/
277		public void testIsHeldExclusively() {
278	<	Mutex rl = new Mutex();
279	<	assertFalse(rl.isHeldExclusively());
278	>	Mutex sync = new Mutex();
279	>	assertFalse(sync.isHeldExclusively());
280		}
281
282		/**
283		* acquiring released sync succeeds
284		*/
285		public void testAcquire() {
286	<	Mutex rl = new Mutex();
287	<	rl.acquire(1);
288	<	assertTrue(rl.isHeldExclusively());
289	<	rl.release(1);
290	<	assertFalse(rl.isHeldExclusively());
286	>	Mutex sync = new Mutex();
287	>	sync.acquire();
288	>	assertTrue(sync.isHeldExclusively());
289	>	sync.release();
290	>	assertFalse(sync.isHeldExclusively());
291		}
292
293		/**
294	<	* tryAcquire on an released sync succeeds
294	>	* tryAcquire on a released sync succeeds
295		*/
296		public void testTryAcquire() {
297	<	Mutex rl = new Mutex();
298	<	assertTrue(rl.tryAcquire(1));
299	<	assertTrue(rl.isHeldExclusively());
300	<	rl.release(1);
297	>	Mutex sync = new Mutex();
298	>	assertTrue(sync.tryAcquire());
299	>	assertTrue(sync.isHeldExclusively());
300	>	sync.release();
301	>	assertFalse(sync.isHeldExclusively());
302		}
303
304		/**
305		* hasQueuedThreads reports whether there are waiting threads
306		*/
307	<	public void testhasQueuedThreads() throws InterruptedException {
307	>	public void testHasQueuedThreads() {
308		final Mutex sync = new Mutex();
130	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
309		assertFalse(sync.hasQueuedThreads());
310	<	sync.acquire(1);
311	<	t1.start();
312	<	Thread.sleep(SHORT_DELAY_MS);
310	>	sync.acquire();
311	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
312	>	waitForQueuedThread(sync, t1);
313		assertTrue(sync.hasQueuedThreads());
314	<	t2.start();
315	<	Thread.sleep(SHORT_DELAY_MS);
314	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
315	>	waitForQueuedThread(sync, t2);
316		assertTrue(sync.hasQueuedThreads());
317		t1.interrupt();
318	<	Thread.sleep(SHORT_DELAY_MS);
318	>	awaitTermination(t1);
319		assertTrue(sync.hasQueuedThreads());
320	<	sync.release(1);
321	<	Thread.sleep(SHORT_DELAY_MS);
320	>	sync.release();
321	>	awaitTermination(t2);
322		assertFalse(sync.hasQueuedThreads());
146	–	t1.join();
147	–	t2.join();
323		}
324
325		/**
326	<	* isQueued(null) throws NPE
326	>	* isQueued(null) throws NullPointerException
327		*/
328		public void testIsQueuedNPE() {
329		final Mutex sync = new Mutex();
#	Line 159 | Line 334 | public class AbstractQueuedLongSynchroni
334		}
335
336		/**
337	<	* isQueued reports whether a thread is queued.
337	>	* isQueued reports whether a thread is queued
338		*/
339	<	public void testIsQueued() throws InterruptedException {
339	>	public void testIsQueued() {
340		final Mutex sync = new Mutex();
341		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
342		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
343		assertFalse(sync.isQueued(t1));
344		assertFalse(sync.isQueued(t2));
345	<	sync.acquire(1);
345	>	sync.acquire();
346		t1.start();
347	<	Thread.sleep(SHORT_DELAY_MS);
347	>	waitForQueuedThread(sync, t1);
348		assertTrue(sync.isQueued(t1));
349	+	assertFalse(sync.isQueued(t2));
350		t2.start();
351	<	Thread.sleep(SHORT_DELAY_MS);
351	>	waitForQueuedThread(sync, t2);
352		assertTrue(sync.isQueued(t1));
353		assertTrue(sync.isQueued(t2));
354		t1.interrupt();
355	<	Thread.sleep(SHORT_DELAY_MS);
355	>	awaitTermination(t1);
356		assertFalse(sync.isQueued(t1));
357		assertTrue(sync.isQueued(t2));
358	<	sync.release(1);
359	<	Thread.sleep(SHORT_DELAY_MS);
358	>	sync.release();
359	>	awaitTermination(t2);
360		assertFalse(sync.isQueued(t1));
185	–	Thread.sleep(SHORT_DELAY_MS);
361		assertFalse(sync.isQueued(t2));
187	–	t1.join();
188	–	t2.join();
362		}
363
364		/**
365		* getFirstQueuedThread returns first waiting thread or null if none
366		*/
367	<	public void testGetFirstQueuedThread() throws InterruptedException {
367	>	public void testGetFirstQueuedThread() {
368		final Mutex sync = new Mutex();
196	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
369		assertNull(sync.getFirstQueuedThread());
370	<	sync.acquire(1);
371	<	t1.start();
372	<	Thread.sleep(SHORT_DELAY_MS);
370	>	sync.acquire();
371	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
372	>	waitForQueuedThread(sync, t1);
373		assertEquals(t1, sync.getFirstQueuedThread());
374	<	t2.start();
375	<	Thread.sleep(SHORT_DELAY_MS);
374	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
375	>	waitForQueuedThread(sync, t2);
376		assertEquals(t1, sync.getFirstQueuedThread());
377		t1.interrupt();
378	<	Thread.sleep(SHORT_DELAY_MS);
208	<	Thread.sleep(SHORT_DELAY_MS);
378	>	awaitTermination(t1);
379		assertEquals(t2, sync.getFirstQueuedThread());
380	<	sync.release(1);
381	<	Thread.sleep(SHORT_DELAY_MS);
380	>	sync.release();
381	>	awaitTermination(t2);
382		assertNull(sync.getFirstQueuedThread());
213	–	t1.join();
214	–	t2.join();
383		}
384
217	–
385		/**
386		* hasContended reports false if no thread has ever blocked, else true
387		*/
388	<	public void testHasContended() throws InterruptedException {
388	>	public void testHasContended() {
389		final Mutex sync = new Mutex();
223	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
390		assertFalse(sync.hasContended());
391	<	sync.acquire(1);
392	<	t1.start();
393	<	Thread.sleep(SHORT_DELAY_MS);
391	>	sync.acquire();
392	>	assertFalse(sync.hasContended());
393	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
394	>	waitForQueuedThread(sync, t1);
395		assertTrue(sync.hasContended());
396	<	t2.start();
397	<	Thread.sleep(SHORT_DELAY_MS);
396	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
397	>	waitForQueuedThread(sync, t2);
398		assertTrue(sync.hasContended());
399		t1.interrupt();
400	<	Thread.sleep(SHORT_DELAY_MS);
400	>	awaitTermination(t1);
401		assertTrue(sync.hasContended());
402	<	sync.release(1);
403	<	Thread.sleep(SHORT_DELAY_MS);
402	>	sync.release();
403	>	awaitTermination(t2);
404		assertTrue(sync.hasContended());
239	–	t1.join();
240	–	t2.join();
405		}
406
407		/**
408	<	* getQueuedThreads includes waiting threads
408	>	* getQueuedThreads returns all waiting threads
409		*/
410	<	public void testGetQueuedThreads() throws InterruptedException {
410	>	public void testGetQueuedThreads() {
411		final Mutex sync = new Mutex();
412		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
413		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
414	<	assertTrue(sync.getQueuedThreads().isEmpty());
415	<	sync.acquire(1);
416	<	assertTrue(sync.getQueuedThreads().isEmpty());
414	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
415	>	sync.acquire();
416	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
417		t1.start();
418	<	Thread.sleep(SHORT_DELAY_MS);
418	>	waitForQueuedThread(sync, t1);
419	>	assertHasExclusiveQueuedThreads(sync, t1);
420		assertTrue(sync.getQueuedThreads().contains(t1));
421	+	assertFalse(sync.getQueuedThreads().contains(t2));
422		t2.start();
423	<	Thread.sleep(SHORT_DELAY_MS);
423	>	waitForQueuedThread(sync, t2);
424	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
425		assertTrue(sync.getQueuedThreads().contains(t1));
426		assertTrue(sync.getQueuedThreads().contains(t2));
427		t1.interrupt();
428	<	Thread.sleep(SHORT_DELAY_MS);
429	<	assertFalse(sync.getQueuedThreads().contains(t1));
430	<	assertTrue(sync.getQueuedThreads().contains(t2));
431	<	sync.release(1);
432	<	Thread.sleep(SHORT_DELAY_MS);
266	<	assertTrue(sync.getQueuedThreads().isEmpty());
267	<	t1.join();
268	<	t2.join();
428	>	awaitTermination(t1);
429	>	assertHasExclusiveQueuedThreads(sync, t2);
430	>	sync.release();
431	>	awaitTermination(t2);
432	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
433		}
434
435		/**
436	<	* getExclusiveQueuedThreads includes waiting threads
436	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
437		*/
438	<	public void testGetExclusiveQueuedThreads() throws InterruptedException {
438	>	public void testGetExclusiveQueuedThreads() {
439		final Mutex sync = new Mutex();
440		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
441		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
442	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
443	<	sync.acquire(1);
444	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
442	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
443	>	sync.acquire();
444	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
445		t1.start();
446	<	Thread.sleep(SHORT_DELAY_MS);
446	>	waitForQueuedThread(sync, t1);
447	>	assertHasExclusiveQueuedThreads(sync, t1);
448		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
449	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
450		t2.start();
451	<	Thread.sleep(SHORT_DELAY_MS);
451	>	waitForQueuedThread(sync, t2);
452	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
453		assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
454		assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
455		t1.interrupt();
456	<	Thread.sleep(SHORT_DELAY_MS);
457	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
458	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
459	<	sync.release(1);
460	<	Thread.sleep(SHORT_DELAY_MS);
294	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	<	t1.join();
296	<	t2.join();
456	>	awaitTermination(t1);
457	>	assertHasExclusiveQueuedThreads(sync, t2);
458	>	sync.release();
459	>	awaitTermination(t2);
460	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
461		}
462
463		/**
464		* getSharedQueuedThreads does not include exclusively waiting threads
465		*/
466	<	public void testGetSharedQueuedThreads() throws InterruptedException {
466	>	public void testGetSharedQueuedThreads_Exclusive() {
467		final Mutex sync = new Mutex();
304	–	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	–	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
468		assertTrue(sync.getSharedQueuedThreads().isEmpty());
469	<	sync.acquire(1);
469	>	sync.acquire();
470		assertTrue(sync.getSharedQueuedThreads().isEmpty());
471	<	t1.start();
472	<	Thread.sleep(SHORT_DELAY_MS);
471	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
472	>	waitForQueuedThread(sync, t1);
473		assertTrue(sync.getSharedQueuedThreads().isEmpty());
474	<	t2.start();
475	<	Thread.sleep(SHORT_DELAY_MS);
474	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
475	>	waitForQueuedThread(sync, t2);
476		assertTrue(sync.getSharedQueuedThreads().isEmpty());
477		t1.interrupt();
478	<	Thread.sleep(SHORT_DELAY_MS);
478	>	awaitTermination(t1);
479		assertTrue(sync.getSharedQueuedThreads().isEmpty());
480	<	sync.release(1);
481	<	Thread.sleep(SHORT_DELAY_MS);
480	>	sync.release();
481	>	awaitTermination(t2);
482		assertTrue(sync.getSharedQueuedThreads().isEmpty());
321	–	t1.join();
322	–	t2.join();
483		}
484
485		/**
486	<	* tryAcquireNanos is interruptible.
486	>	* getSharedQueuedThreads returns all shared waiting threads
487	>	*/
488	>	public void testGetSharedQueuedThreads_Shared() {
489	>	final BooleanLatch l = new BooleanLatch();
490	>	assertHasSharedQueuedThreads(l, NO_THREADS);
491	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
492	>	public void realRun() throws InterruptedException {
493	>	l.acquireSharedInterruptibly(0);
494	>	}});
495	>	waitForQueuedThread(l, t1);
496	>	assertHasSharedQueuedThreads(l, t1);
497	>	Thread t2 = newStartedThread(new CheckedRunnable() {
498	>	public void realRun() throws InterruptedException {
499	>	l.acquireSharedInterruptibly(0);
500	>	}});
501	>	waitForQueuedThread(l, t2);
502	>	assertHasSharedQueuedThreads(l, t1, t2);
503	>	t1.interrupt();
504	>	awaitTermination(t1);
505	>	assertHasSharedQueuedThreads(l, t2);
506	>	assertTrue(l.releaseShared(0));
507	>	awaitTermination(t2);
508	>	assertHasSharedQueuedThreads(l, NO_THREADS);
509	>	}
510	>
511	>	/**
512	>	* tryAcquireNanos is interruptible
513		*/
514	<	public void testInterruptedException2() throws InterruptedException {
514	>	public void testTryAcquireNanos_Interruptible() {
515		final Mutex sync = new Mutex();
516	<	sync.acquire(1);
517	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
516	>	sync.acquire();
517	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
518		public void realRun() throws InterruptedException {
519	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
519	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
520		}});
521
522	<	t.start();
522	>	waitForQueuedThread(sync, t);
523		t.interrupt();
524	<	t.join();
524	>	awaitTermination(t);
525		}
526
341	–
527		/**
528	<	* TryAcquire on exclusively held sync fails
528	>	* tryAcquire on exclusively held sync fails
529		*/
530	<	public void testTryAcquireWhenSynced() throws InterruptedException {
530	>	public void testTryAcquireWhenSynced() {
531		final Mutex sync = new Mutex();
532	<	sync.acquire(1);
533	<	Thread t = new Thread(new CheckedRunnable() {
532	>	sync.acquire();
533	>	Thread t = newStartedThread(new CheckedRunnable() {
534		public void realRun() {
535	<	threadAssertFalse(sync.tryAcquire(1));
535	>	assertFalse(sync.tryAcquire());
536		}});
537
538	<	t.start();
539	<	t.join();
355	<	sync.release(1);
538	>	awaitTermination(t);
539	>	sync.release();
540		}
541
542		/**
543		* tryAcquireNanos on an exclusively held sync times out
544		*/
545	<	public void testAcquireNanos_Timeout() throws InterruptedException {
545	>	public void testAcquireNanos_Timeout() {
546		final Mutex sync = new Mutex();
547	<	sync.acquire(1);
548	<	Thread t = new Thread(new CheckedRunnable() {
547	>	sync.acquire();
548	>	Thread t = newStartedThread(new CheckedRunnable() {
549		public void realRun() throws InterruptedException {
550	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
550	>	long startTime = System.nanoTime();
551	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
552	>	assertFalse(sync.tryAcquireNanos(nanos));
553	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
554		}});
555
556	<	t.start();
557	<	t.join();
371	<	sync.release(1);
556	>	awaitTermination(t);
557	>	sync.release();
558		}
559
374	–
560		/**
561		* getState is true when acquired and false when not
562		*/
563	<	public void testGetState() throws InterruptedException {
563	>	public void testGetState() {
564		final Mutex sync = new Mutex();
565	<	sync.acquire(1);
565	>	sync.acquire();
566		assertTrue(sync.isHeldExclusively());
567	<	sync.release(1);
567	>	sync.release();
568		assertFalse(sync.isHeldExclusively());
569	<	Thread t = new Thread(new CheckedRunnable() {
569	>
570	>	final BooleanLatch acquired = new BooleanLatch();
571	>	final BooleanLatch done = new BooleanLatch();
572	>	Thread t = newStartedThread(new CheckedRunnable() {
573		public void realRun() throws InterruptedException {
574	<	sync.acquire(1);
575	<	Thread.sleep(SMALL_DELAY_MS);
576	<	sync.release(1);
574	>	sync.acquire();
575	>	assertTrue(acquired.releaseShared(0));
576	>	done.acquireShared(0);
577	>	sync.release();
578		}});
579
580	<	t.start();
392	<	Thread.sleep(SHORT_DELAY_MS);
580	>	acquired.acquireShared(0);
581		assertTrue(sync.isHeldExclusively());
582	<	t.join();
582	>	assertTrue(done.releaseShared(0));
583	>	awaitTermination(t);
584		assertFalse(sync.isHeldExclusively());
585		}
586
398	–
399	–	/**
400	–	* acquireInterruptibly is interruptible.
401	–	*/
402	–	public void testAcquireInterruptibly1() throws InterruptedException {
403	–	final Mutex sync = new Mutex();
404	–	sync.acquire(1);
405	–	Thread t = new Thread(new InterruptedSyncRunnable(sync));
406	–	t.start();
407	–	Thread.sleep(SHORT_DELAY_MS);
408	–	t.interrupt();
409	–	Thread.sleep(SHORT_DELAY_MS);
410	–	sync.release(1);
411	–	t.join();
412	–	}
413	–
587		/**
588		* acquireInterruptibly succeeds when released, else is interruptible
589		*/
590	<	public void testAcquireInterruptibly2() throws InterruptedException {
590	>	public void testAcquireInterruptibly() throws InterruptedException {
591		final Mutex sync = new Mutex();
592	<	sync.acquireInterruptibly(1);
593	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
594	<	t.start();
592	>	final BooleanLatch threadStarted = new BooleanLatch();
593	>	sync.acquireInterruptibly();
594	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
595	>	public void realRun() throws InterruptedException {
596	>	assertTrue(threadStarted.releaseShared(0));
597	>	sync.acquireInterruptibly();
598	>	}});
599	>
600	>	threadStarted.acquireShared(0);
601	>	waitForQueuedThread(sync, t);
602		t.interrupt();
603	+	awaitTermination(t);
604		assertTrue(sync.isHeldExclusively());
424	–	t.join();
605		}
606
607		/**
#	Line 429 | Line 609 | public class AbstractQueuedLongSynchroni
609		*/
610		public void testOwns() {
611		final Mutex sync = new Mutex();
612	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
612	>	final ConditionObject c = sync.newCondition();
613		final Mutex sync2 = new Mutex();
614		assertTrue(sync.owns(c));
615		assertFalse(sync2.owns(c));
#	Line 438 | Line 618 | public class AbstractQueuedLongSynchroni
618		/**
619		* Calling await without holding sync throws IllegalMonitorStateException
620		*/
621	<	public void testAwait_IllegalMonitor() throws InterruptedException {
621	>	public void testAwait_IMSE() {
622		final Mutex sync = new Mutex();
623	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
624	<	try {
625	<	c.await();
626	<	shouldThrow();
627	<	} catch (IllegalMonitorStateException success) {}
623	>	final ConditionObject c = sync.newCondition();
624	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
625	>	long startTime = System.nanoTime();
626	>	try {
627	>	await(c, awaitMethod);
628	>	shouldThrow();
629	>	} catch (IllegalMonitorStateException success) {
630	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
631	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
632	>	}
633		}
634
635		/**
636		* Calling signal without holding sync throws IllegalMonitorStateException
637		*/
638	<	public void testSignal_IllegalMonitor() throws InterruptedException {
638	>	public void testSignal_IMSE() {
639		final Mutex sync = new Mutex();
640	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
640	>	final ConditionObject c = sync.newCondition();
641		try {
642		c.signal();
643		shouldThrow();
644		} catch (IllegalMonitorStateException success) {}
645	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
646		}
647
648		/**
649	<	* awaitNanos without a signal times out
649	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
650		*/
651	<	public void testAwaitNanos_Timeout() throws InterruptedException {
651	>	public void testSignalAll_IMSE() {
652		final Mutex sync = new Mutex();
653	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
654	<	sync.acquire(1);
655	<	long t = c.awaitNanos(100);
656	<	assertTrue(t <= 0);
657	<	sync.release(1);
472	<	}
473	<
474	<	/**
475	<	*  Timed await without a signal times out
476	<	*/
477	<	public void testAwait_Timeout() throws InterruptedException {
478	<	final Mutex sync = new Mutex();
479	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
480	<	sync.acquire(1);
481	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
482	<	sync.release(1);
653	>	final ConditionObject c = sync.newCondition();
654	>	try {
655	>	c.signalAll();
656	>	shouldThrow();
657	>	} catch (IllegalMonitorStateException success) {}
658		}
659
660		/**
661	<	* awaitUntil without a signal times out
661	>	* await/awaitNanos/awaitUntil without a signal times out
662		*/
663	<	public void testAwaitUntil_Timeout() throws InterruptedException {
663	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
664	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
665	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
666	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
667		final Mutex sync = new Mutex();
668	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
669	<	sync.acquire(1);
670	<	java.util.Date d = new java.util.Date();
671	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
494	<	sync.release(1);
668	>	final ConditionObject c = sync.newCondition();
669	>	sync.acquire();
670	>	assertAwaitTimesOut(c, awaitMethod);
671	>	sync.release();
672		}
673
674		/**
675	<	* await returns when signalled
675	>	* await/awaitNanos/awaitUntil returns when signalled
676		*/
677	<	public void testAwait() throws InterruptedException {
677	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
678	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
679	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
680	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
681	>	public void testSignal(final AwaitMethod awaitMethod) {
682		final Mutex sync = new Mutex();
683	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
684	<	Thread t = new Thread(new CheckedRunnable() {
683	>	final ConditionObject c = sync.newCondition();
684	>	final BooleanLatch acquired = new BooleanLatch();
685	>	Thread t = newStartedThread(new CheckedRunnable() {
686		public void realRun() throws InterruptedException {
687	<	sync.acquire(1);
688	<	c.await();
689	<	sync.release(1);
687	>	sync.acquire();
688	>	assertTrue(acquired.releaseShared(0));
689	>	await(c, awaitMethod);
690	>	sync.release();
691		}});
692
693	<	t.start();
694	<	Thread.sleep(SHORT_DELAY_MS);
695	<	sync.acquire(1);
693	>	acquired.acquireShared(0);
694	>	sync.acquire();
695	>	assertHasWaitersLocked(sync, c, t);
696	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
697		c.signal();
698	<	sync.release(1);
699	<	t.join(SHORT_DELAY_MS);
700	<	assertFalse(t.isAlive());
698	>	assertHasWaitersLocked(sync, c, NO_THREADS);
699	>	assertHasExclusiveQueuedThreads(sync, t);
700	>	sync.release();
701	>	awaitTermination(t);
702		}
703
519	–
520	–
704		/**
705	<	* hasWaiters throws NPE if null
705	>	* hasWaiters(null) throws NullPointerException
706		*/
707		public void testHasWaitersNPE() {
708		final Mutex sync = new Mutex();
#	Line 530 | Line 713 | public class AbstractQueuedLongSynchroni
713		}
714
715		/**
716	<	* getWaitQueueLength throws NPE if null
716	>	* getWaitQueueLength(null) throws NullPointerException
717		*/
718		public void testGetWaitQueueLengthNPE() {
719		final Mutex sync = new Mutex();
#	Line 540 | Line 723 | public class AbstractQueuedLongSynchroni
723		} catch (NullPointerException success) {}
724		}
725
543	–
726		/**
727		* getWaitingThreads throws NPE if null
728		*/
#	Line 552 | Line 734 | public class AbstractQueuedLongSynchroni
734		} catch (NullPointerException success) {}
735		}
736
555	–
737		/**
738	<	* hasWaiters throws IAE if not owned
738	>	* hasWaiters throws IllegalArgumentException if not owned
739		*/
740		public void testHasWaitersIAE() {
741		final Mutex sync = new Mutex();
742	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
742	>	final ConditionObject c = sync.newCondition();
743		final Mutex sync2 = new Mutex();
744		try {
745		sync2.hasWaiters(c);
746		shouldThrow();
747		} catch (IllegalArgumentException success) {}
748	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
749		}
750
751		/**
752	<	* hasWaiters throws IMSE if not synced
752	>	* hasWaiters throws IllegalMonitorStateException if not synced
753		*/
754		public void testHasWaitersIMSE() {
755		final Mutex sync = new Mutex();
756	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
756	>	final ConditionObject c = sync.newCondition();
757		try {
758		sync.hasWaiters(c);
759		shouldThrow();
760		} catch (IllegalMonitorStateException success) {}
761	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
762		}
763
581	–
764		/**
765	<	* getWaitQueueLength throws IAE if not owned
765	>	* getWaitQueueLength throws IllegalArgumentException if not owned
766		*/
767		public void testGetWaitQueueLengthIAE() {
768		final Mutex sync = new Mutex();
769	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
769	>	final ConditionObject c = sync.newCondition();
770		final Mutex sync2 = new Mutex();
771		try {
772		sync2.getWaitQueueLength(c);
773		shouldThrow();
774		} catch (IllegalArgumentException success) {}
775	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
776		}
777
778		/**
779	<	* getWaitQueueLength throws IMSE if not synced
779	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
780		*/
781		public void testGetWaitQueueLengthIMSE() {
782		final Mutex sync = new Mutex();
783	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
783	>	final ConditionObject c = sync.newCondition();
784		try {
785		sync.getWaitQueueLength(c);
786		shouldThrow();
787		} catch (IllegalMonitorStateException success) {}
788	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
789		}
790
607	–
791		/**
792	<	* getWaitingThreads throws IAE if not owned
792	>	* getWaitingThreads throws IllegalArgumentException if not owned
793		*/
794		public void testGetWaitingThreadsIAE() {
795		final Mutex sync = new Mutex();
796	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
796	>	final ConditionObject c = sync.newCondition();
797		final Mutex sync2 = new Mutex();
798		try {
799		sync2.getWaitingThreads(c);
800		shouldThrow();
801		} catch (IllegalArgumentException success) {}
802	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
803		}
804
805		/**
806	<	* getWaitingThreads throws IMSE if not synced
806	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
807		*/
808		public void testGetWaitingThreadsIMSE() {
809		final Mutex sync = new Mutex();
810	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
810	>	final ConditionObject c = sync.newCondition();
811		try {
812		sync.getWaitingThreads(c);
813		shouldThrow();
814		} catch (IllegalMonitorStateException success) {}
815	+	assertHasWaitersUnlocked(sync, c, NO_THREADS);
816		}
817
633	–
634	–
818		/**
819		* hasWaiters returns true when a thread is waiting, else false
820		*/
821	<	public void testHasWaiters() throws InterruptedException {
821	>	public void testHasWaiters() {
822		final Mutex sync = new Mutex();
823	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
824	<	Thread t = new Thread(new CheckedRunnable() {
823	>	final ConditionObject c = sync.newCondition();
824	>	final BooleanLatch acquired = new BooleanLatch();
825	>	Thread t = newStartedThread(new CheckedRunnable() {
826		public void realRun() throws InterruptedException {
827	<	sync.acquire(1);
828	<	threadAssertFalse(sync.hasWaiters(c));
829	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
827	>	sync.acquire();
828	>	assertHasWaitersLocked(sync, c, NO_THREADS);
829	>	assertFalse(sync.hasWaiters(c));
830	>	assertTrue(acquired.releaseShared(0));
831		c.await();
832	<	sync.release(1);
832	>	sync.release();
833		}});
834
835	<	t.start();
836	<	Thread.sleep(SHORT_DELAY_MS);
837	<	sync.acquire(1);
835	>	acquired.acquireShared(0);
836	>	sync.acquire();
837	>	assertHasWaitersLocked(sync, c, t);
838	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
839		assertTrue(sync.hasWaiters(c));
654	–	assertEquals(1, sync.getWaitQueueLength(c));
840		c.signal();
841	<	sync.release(1);
842	<	Thread.sleep(SHORT_DELAY_MS);
658	<	sync.acquire(1);
841	>	assertHasWaitersLocked(sync, c, NO_THREADS);
842	>	assertHasExclusiveQueuedThreads(sync, t);
843		assertFalse(sync.hasWaiters(c));
844	<	assertEquals(0, sync.getWaitQueueLength(c));
845	<	sync.release(1);
846	<	t.join(SHORT_DELAY_MS);
847	<	assertFalse(t.isAlive());
844	>	sync.release();
845	>
846	>	awaitTermination(t);
847	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
848		}
849
850		/**
851		* getWaitQueueLength returns number of waiting threads
852		*/
853	<	public void testGetWaitQueueLength() throws InterruptedException {
853	>	public void testGetWaitQueueLength() {
854		final Mutex sync = new Mutex();
855	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
856	<	Thread t1 = new Thread(new CheckedRunnable() {
855	>	final ConditionObject c = sync.newCondition();
856	>	final BooleanLatch acquired1 = new BooleanLatch();
857	>	final BooleanLatch acquired2 = new BooleanLatch();
858	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
859		public void realRun() throws InterruptedException {
860	<	sync.acquire(1);
861	<	threadAssertFalse(sync.hasWaiters(c));
862	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
860	>	sync.acquire();
861	>	assertHasWaitersLocked(sync, c, NO_THREADS);
862	>	assertEquals(0, sync.getWaitQueueLength(c));
863	>	assertTrue(acquired1.releaseShared(0));
864		c.await();
865	<	sync.release(1);
865	>	sync.release();
866		}});
867	+	acquired1.acquireShared(0);
868	+	sync.acquire();
869	+	assertHasWaitersLocked(sync, c, t1);
870	+	assertEquals(1, sync.getWaitQueueLength(c));
871	+	sync.release();
872
873	<	Thread t2 = new Thread(new CheckedRunnable() {
873	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
874		public void realRun() throws InterruptedException {
875	<	sync.acquire(1);
876	<	threadAssertTrue(sync.hasWaiters(c));
877	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
875	>	sync.acquire();
876	>	assertHasWaitersLocked(sync, c, t1);
877	>	assertEquals(1, sync.getWaitQueueLength(c));
878	>	assertTrue(acquired2.releaseShared(0));
879		c.await();
880	<	sync.release(1);
880	>	sync.release();
881		}});
882	<
883	<	t1.start();
884	<	Thread.sleep(SHORT_DELAY_MS);
885	<	t2.start();
693	<	Thread.sleep(SHORT_DELAY_MS);
694	<	sync.acquire(1);
695	<	assertTrue(sync.hasWaiters(c));
882	>	acquired2.acquireShared(0);
883	>	sync.acquire();
884	>	assertHasWaitersLocked(sync, c, t1, t2);
885	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
886		assertEquals(2, sync.getWaitQueueLength(c));
887		c.signalAll();
888	<	sync.release(1);
889	<	Thread.sleep(SHORT_DELAY_MS);
700	<	sync.acquire(1);
701	<	assertFalse(sync.hasWaiters(c));
888	>	assertHasWaitersLocked(sync, c, NO_THREADS);
889	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
890		assertEquals(0, sync.getWaitQueueLength(c));
891	<	sync.release(1);
892	<	t1.join(SHORT_DELAY_MS);
893	<	t2.join(SHORT_DELAY_MS);
894	<	assertFalse(t1.isAlive());
895	<	assertFalse(t2.isAlive());
891	>	sync.release();
892	>
893	>	awaitTermination(t1);
894	>	awaitTermination(t2);
895	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
896		}
897
898		/**
899		* getWaitingThreads returns only and all waiting threads
900		*/
901	<	public void testGetWaitingThreads() throws InterruptedException {
901	>	public void testGetWaitingThreads() {
902		final Mutex sync = new Mutex();
903	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
904	<	Thread t1 = new Thread(new CheckedRunnable() {
903	>	final ConditionObject c = sync.newCondition();
904	>	final BooleanLatch acquired1 = new BooleanLatch();
905	>	final BooleanLatch acquired2 = new BooleanLatch();
906	>	final Thread t1 = new Thread(new CheckedRunnable() {
907		public void realRun() throws InterruptedException {
908	<	sync.acquire(1);
909	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
908	>	sync.acquire();
909	>	assertHasWaitersLocked(sync, c, NO_THREADS);
910	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
911	>	assertTrue(acquired1.releaseShared(0));
912		c.await();
913	<	sync.release(1);
913	>	sync.release();
914		}});
915
916	<	Thread t2 = new Thread(new CheckedRunnable() {
916	>	final Thread t2 = new Thread(new CheckedRunnable() {
917		public void realRun() throws InterruptedException {
918	<	sync.acquire(1);
919	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
918	>	sync.acquire();
919	>	assertHasWaitersLocked(sync, c, t1);
920	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
921	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
922	>	assertEquals(1, sync.getWaitingThreads(c).size());
923	>	assertTrue(acquired2.releaseShared(0));
924		c.await();
925	<	sync.release(1);
925	>	sync.release();
926		}});
927
928	<	sync.acquire(1);
929	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
930	<	sync.release(1);
931	<	t1.start();
932	<	Thread.sleep(SHORT_DELAY_MS);
933	<	t2.start();
934	<	Thread.sleep(SHORT_DELAY_MS);
739	<	sync.acquire(1);
740	<	assertTrue(sync.hasWaiters(c));
741	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
742	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
743	<	c.signalAll();
744	<	sync.release(1);
745	<	Thread.sleep(SHORT_DELAY_MS);
746	<	sync.acquire(1);
747	<	assertFalse(sync.hasWaiters(c));
748	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
749	<	sync.release(1);
750	<	t1.join(SHORT_DELAY_MS);
751	<	t2.join(SHORT_DELAY_MS);
752	<	assertFalse(t1.isAlive());
753	<	assertFalse(t2.isAlive());
754	<	}
928	>	sync.acquire();
929	>	assertHasWaitersLocked(sync, c, NO_THREADS);
930	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
931	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
932	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
933	>	assertEquals(0, sync.getWaitingThreads(c).size());
934	>	sync.release();
935
936	+	t1.start();
937	+	acquired1.acquireShared(0);
938	+	sync.acquire();
939	+	assertHasWaitersLocked(sync, c, t1);
940	+	assertTrue(sync.getWaitingThreads(c).contains(t1));
941	+	assertFalse(sync.getWaitingThreads(c).contains(t2));
942	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
943	+	assertEquals(1, sync.getWaitingThreads(c).size());
944	+	sync.release();
945
946	+	t2.start();
947	+	acquired2.acquireShared(0);
948	+	sync.acquire();
949	+	assertHasWaitersLocked(sync, c, t1, t2);
950	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
951	+	assertTrue(sync.getWaitingThreads(c).contains(t1));
952	+	assertTrue(sync.getWaitingThreads(c).contains(t2));
953	+	assertFalse(sync.getWaitingThreads(c).isEmpty());
954	+	assertEquals(2, sync.getWaitingThreads(c).size());
955	+	c.signalAll();
956	+	assertHasWaitersLocked(sync, c, NO_THREADS);
957	+	assertHasExclusiveQueuedThreads(sync, t1, t2);
958	+	assertFalse(sync.getWaitingThreads(c).contains(t1));
959	+	assertFalse(sync.getWaitingThreads(c).contains(t2));
960	+	assertTrue(sync.getWaitingThreads(c).isEmpty());
961	+	assertEquals(0, sync.getWaitingThreads(c).size());
962	+	sync.release();
963
964	<	/**
965	<	* awaitUninterruptibly doesn't abort on interrupt
966	<	*/
761	<	public void testAwaitUninterruptibly() throws InterruptedException {
762	<	final Mutex sync = new Mutex();
763	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
764	<	Thread t = new Thread(new CheckedRunnable() {
765	<	public void realRun() {
766	<	sync.acquire(1);
767	<	c.awaitUninterruptibly();
768	<	sync.release(1);
769	<	}});
770	<
771	<	t.start();
772	<	Thread.sleep(SHORT_DELAY_MS);
773	<	t.interrupt();
774	<	sync.acquire(1);
775	<	c.signal();
776	<	sync.release(1);
777	<	t.join(SHORT_DELAY_MS);
778	<	assertFalse(t.isAlive());
779	<	}
780	<
781	<	/**
782	<	* await is interruptible
783	<	*/
784	<	public void testAwait_Interrupt() throws InterruptedException {
785	<	final Mutex sync = new Mutex();
786	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
787	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
788	<	public void realRun() throws InterruptedException {
789	<	sync.acquire(1);
790	<	c.await();
791	<	}});
792	<
793	<	t.start();
794	<	Thread.sleep(SHORT_DELAY_MS);
795	<	t.interrupt();
796	<	t.join(SHORT_DELAY_MS);
797	<	assertFalse(t.isAlive());
964	>	awaitTermination(t1);
965	>	awaitTermination(t2);
966	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
967		}
968
969		/**
970	<	* awaitNanos is interruptible
970	>	* awaitUninterruptibly is uninterruptible
971		*/
972	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
972	>	public void testAwaitUninterruptibly() {
973		final Mutex sync = new Mutex();
974	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
975	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
976	<	public void realRun() throws InterruptedException {
977	<	sync.acquire(1);
978	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
974	>	final ConditionObject condition = sync.newCondition();
975	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
976	>	Thread t = newStartedThread(new CheckedRunnable() {
977	>	public void realRun() {
978	>	sync.acquire();
979	>	assertTrue(pleaseInterrupt.releaseShared(0));
980	>	condition.awaitUninterruptibly();
981	>	assertTrue(Thread.interrupted());
982	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
983	>	sync.release();
984		}});
985
986	<	t.start();
987	<	Thread.sleep(SHORT_DELAY_MS);
986	>	pleaseInterrupt.acquireShared(0);
987	>	sync.acquire();
988	>	assertHasWaitersLocked(sync, condition, t);
989	>	sync.release();
990		t.interrupt();
991	<	t.join(SHORT_DELAY_MS);
992	<	assertFalse(t.isAlive());
991	>	assertHasWaitersUnlocked(sync, condition, t);
992	>	assertThreadBlocks(t, Thread.State.WAITING);
993	>	sync.acquire();
994	>	assertHasWaitersLocked(sync, condition, t);
995	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
996	>	condition.signal();
997	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
998	>	assertHasExclusiveQueuedThreads(sync, t);
999	>	sync.release();
1000	>	awaitTermination(t);
1001		}
1002
1003		/**
1004	<	* awaitUntil is interruptible
1005	<	*/
1006	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
1007	<	final Mutex sync = new Mutex();
1008	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1009	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1004	>	* await/awaitNanos/awaitUntil is interruptible
1005	>	*/
1006	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
1007	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
1008	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
1009	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
1010	>	public void testInterruptible(final AwaitMethod awaitMethod) {
1011	>	final Mutex sync = new Mutex();
1012	>	final ConditionObject c = sync.newCondition();
1013	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1014	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1015		public void realRun() throws InterruptedException {
1016	<	sync.acquire(1);
1017	<	java.util.Date d = new java.util.Date();
1018	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1016	>	sync.acquire();
1017	>	assertTrue(pleaseInterrupt.releaseShared(0));
1018	>	await(c, awaitMethod);
1019		}});
1020
1021	<	t.start();
833	<	Thread.sleep(SHORT_DELAY_MS);
1021	>	pleaseInterrupt.acquireShared(0);
1022		t.interrupt();
1023	<	t.join(SHORT_DELAY_MS);
836	<	assertFalse(t.isAlive());
1023	>	awaitTermination(t);
1024		}
1025
1026		/**
1027		* signalAll wakes up all threads
1028		*/
1029	<	public void testSignalAll() throws InterruptedException {
1030	<	final Mutex sync = new Mutex();
1031	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1032	<	Thread t1 = new Thread(new CheckedRunnable() {
1029	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1030	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1031	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1032	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1033	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1034	>	final Mutex sync = new Mutex();
1035	>	final ConditionObject c = sync.newCondition();
1036	>	final BooleanLatch acquired1 = new BooleanLatch();
1037	>	final BooleanLatch acquired2 = new BooleanLatch();
1038	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1039		public void realRun() throws InterruptedException {
1040	<	sync.acquire(1);
1041	<	c.await();
1042	<	sync.release(1);
1040	>	sync.acquire();
1041	>	acquired1.releaseShared(0);
1042	>	await(c, awaitMethod);
1043	>	sync.release();
1044		}});
1045
1046	<	Thread t2 = new Thread(new CheckedRunnable() {
1046	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1047		public void realRun() throws InterruptedException {
1048	<	sync.acquire(1);
1049	<	c.await();
1050	<	sync.release(1);
1048	>	sync.acquire();
1049	>	acquired2.releaseShared(0);
1050	>	await(c, awaitMethod);
1051	>	sync.release();
1052		}});
1053
1054	<	t1.start();
1055	<	t2.start();
1056	<	Thread.sleep(SHORT_DELAY_MS);
1057	<	sync.acquire(1);
1054	>	acquired1.acquireShared(0);
1055	>	acquired2.acquireShared(0);
1056	>	sync.acquire();
1057	>	assertHasWaitersLocked(sync, c, t1, t2);
1058	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1059		c.signalAll();
1060	<	sync.release(1);
1061	<	t1.join(SHORT_DELAY_MS);
1062	<	t2.join(SHORT_DELAY_MS);
1063	<	assertFalse(t1.isAlive());
1064	<	assertFalse(t2.isAlive());
1060	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1061	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1062	>	sync.release();
1063	>	awaitTermination(t1);
1064	>	awaitTermination(t2);
1065		}
1066
871	–
1067		/**
1068		* toString indicates current state
1069		*/
1070		public void testToString() {
1071		Mutex sync = new Mutex();
1072	<	String us = sync.toString();
1073	<	assertTrue(us.indexOf("State = 0") >= 0);
1074	<	sync.acquire(1);
880	<	String ls = sync.toString();
881	<	assertTrue(ls.indexOf("State = " + Mutex.LOCKED) >= 0);
1072	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1073	>	sync.acquire();
1074	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1075		}
1076
1077		/**
1078	<	* A serialized AQS deserializes with current state
1079	<	*/
1080	<	public void testSerialization() throws Exception {
1081	<	Mutex l = new Mutex();
1082	<	l.acquire(1);
1083	<	assertTrue(l.isHeldExclusively());
1084	<
1085	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1086	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
894	<	out.writeObject(l);
895	<	out.close();
896	<
897	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
898	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
899	<	Mutex r = (Mutex) in.readObject();
900	<	assertTrue(r.isHeldExclusively());
901	<	}
1078	>	* A serialized AQS deserializes with current state, but no queued threads
1079	>	*/
1080	>	public void testSerialization() {
1081	>	Mutex sync = new Mutex();
1082	>	assertFalse(serialClone(sync).isHeldExclusively());
1083	>	sync.acquire();
1084	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1085	>	waitForQueuedThread(sync, t);
1086	>	assertTrue(sync.isHeldExclusively());
1087
1088	+	Mutex clone = serialClone(sync);
1089	+	assertTrue(clone.isHeldExclusively());
1090	+	assertHasExclusiveQueuedThreads(sync, t);
1091	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1092	+	t.interrupt();
1093	+	awaitTermination(t);
1094	+	sync.release();
1095	+	assertFalse(sync.isHeldExclusively());
1096	+	assertTrue(clone.isHeldExclusively());
1097	+	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1098	+	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1099	+	}
1100
1101		/**
1102		* tryReleaseShared setting state changes getState
#	Line 907 | Line 1104 | public class AbstractQueuedLongSynchroni
1104		public void testGetStateWithReleaseShared() {
1105		final BooleanLatch l = new BooleanLatch();
1106		assertFalse(l.isSignalled());
1107	<	l.releaseShared(0);
1107	>	assertTrue(l.releaseShared(0));
1108		assertTrue(l.isSignalled());
1109		}
1110
#	Line 917 | Line 1114 | public class AbstractQueuedLongSynchroni
1114		public void testReleaseShared() {
1115		final BooleanLatch l = new BooleanLatch();
1116		assertFalse(l.isSignalled());
1117	<	l.releaseShared(0);
1117	>	assertTrue(l.releaseShared(0));
1118		assertTrue(l.isSignalled());
1119	<	l.releaseShared(0);
1119	>	assertTrue(l.releaseShared(0));
1120		assertTrue(l.isSignalled());
1121		}
1122
1123		/**
1124		* acquireSharedInterruptibly returns after release, but not before
1125		*/
1126	<	public void testAcquireSharedInterruptibly() throws InterruptedException {
1126	>	public void testAcquireSharedInterruptibly() {
1127		final BooleanLatch l = new BooleanLatch();
1128
1129	<	Thread t = new Thread(new CheckedRunnable() {
1129	>	Thread t = newStartedThread(new CheckedRunnable() {
1130		public void realRun() throws InterruptedException {
1131	<	threadAssertFalse(l.isSignalled());
1131	>	assertFalse(l.isSignalled());
1132		l.acquireSharedInterruptibly(0);
1133	<	threadAssertTrue(l.isSignalled());
1133	>	assertTrue(l.isSignalled());
1134	>	l.acquireSharedInterruptibly(0);
1135	>	assertTrue(l.isSignalled());
1136		}});
1137
1138	<	t.start();
1138	>	waitForQueuedThread(l, t);
1139		assertFalse(l.isSignalled());
1140	<	Thread.sleep(SHORT_DELAY_MS);
1141	<	l.releaseShared(0);
1140	>	assertThreadBlocks(t, Thread.State.WAITING);
1141	>	assertHasSharedQueuedThreads(l, t);
1142	>	assertTrue(l.releaseShared(0));
1143		assertTrue(l.isSignalled());
1144	<	t.join();
1144	>	awaitTermination(t);
1145		}
1146
947	–
1147		/**
1148	<	* acquireSharedTimed returns after release
1148	>	* tryAcquireSharedNanos returns after release, but not before
1149		*/
1150	<	public void testAsquireSharedTimed() throws InterruptedException {
1150	>	public void testTryAcquireSharedNanos() {
1151		final BooleanLatch l = new BooleanLatch();
1152
1153	<	Thread t = new Thread(new CheckedRunnable() {
1153	>	Thread t = newStartedThread(new CheckedRunnable() {
1154		public void realRun() throws InterruptedException {
1155	<	threadAssertFalse(l.isSignalled());
1156	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1157	<	threadAssertTrue(l.isSignalled());
1155	>	assertFalse(l.isSignalled());
1156	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1157	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1158	>	assertTrue(l.isSignalled());
1159	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1160	>	assertTrue(l.isSignalled());
1161		}});
1162
1163	<	t.start();
1163	>	waitForQueuedThread(l, t);
1164		assertFalse(l.isSignalled());
1165	<	Thread.sleep(SHORT_DELAY_MS);
1166	<	l.releaseShared(0);
1165	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1166	>	assertTrue(l.releaseShared(0));
1167		assertTrue(l.isSignalled());
1168	<	t.join();
1168	>	awaitTermination(t);
1169		}
1170
1171		/**
1172	<	* acquireSharedInterruptibly throws IE if interrupted before released
1172	>	* acquireSharedInterruptibly is interruptible
1173		*/
1174	<	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1174	>	public void testAcquireSharedInterruptibly_Interruptible() {
1175		final BooleanLatch l = new BooleanLatch();
1176	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1176	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1177		public void realRun() throws InterruptedException {
1178	<	threadAssertFalse(l.isSignalled());
1178	>	assertFalse(l.isSignalled());
1179		l.acquireSharedInterruptibly(0);
1180		}});
1181
1182	<	t.start();
1182	>	waitForQueuedThread(l, t);
1183		assertFalse(l.isSignalled());
1184		t.interrupt();
1185	<	t.join();
1185	>	awaitTermination(t);
1186	>	assertFalse(l.isSignalled());
1187		}
1188
1189		/**
1190	<	* acquireSharedTimed throws IE if interrupted before released
1190	>	* tryAcquireSharedNanos is interruptible
1191		*/
1192	<	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1192	>	public void testTryAcquireSharedNanos_Interruptible() {
1193		final BooleanLatch l = new BooleanLatch();
1194	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
1194	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1195		public void realRun() throws InterruptedException {
1196	<	threadAssertFalse(l.isSignalled());
1197	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1196	>	assertFalse(l.isSignalled());
1197	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1198	>	l.tryAcquireSharedNanos(0, nanos);
1199		}});
1200
1201	<	t.start();
998	<	Thread.sleep(SHORT_DELAY_MS);
1201	>	waitForQueuedThread(l, t);
1202		assertFalse(l.isSignalled());
1203		t.interrupt();
1204	<	t.join();
1204	>	awaitTermination(t);
1205	>	assertFalse(l.isSignalled());
1206		}
1207
1208		/**
1209	<	* acquireSharedTimed times out if not released before timeout
1209	>	* tryAcquireSharedNanos times out if not released before timeout
1210		*/
1211	<	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1211	>	public void testTryAcquireSharedNanos_Timeout() {
1212		final BooleanLatch l = new BooleanLatch();
1213	<	Thread t = new Thread(new CheckedRunnable() {
1213	>	final BooleanLatch observedQueued = new BooleanLatch();
1214	>	Thread t = newStartedThread(new CheckedRunnable() {
1215		public void realRun() throws InterruptedException {
1216	<	threadAssertFalse(l.isSignalled());
1217	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1216	>	assertFalse(l.isSignalled());
1217	>	for (long millis = timeoutMillis();
1218	>	!observedQueued.isSignalled();
1219	>	millis *= 2) {
1220	>	long nanos = MILLISECONDS.toNanos(millis);
1221	>	long startTime = System.nanoTime();
1222	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1223	>	assertTrue(millisElapsedSince(startTime) >= millis);
1224	>	}
1225	>	assertFalse(l.isSignalled());
1226		}});
1227
1228	<	t.start();
1229	<	Thread.sleep(SHORT_DELAY_MS);
1228	>	waitForQueuedThread(l, t);
1229	>	observedQueued.releaseShared(0);
1230	>	assertFalse(l.isSignalled());
1231	>	awaitTermination(t);
1232		assertFalse(l.isSignalled());
1233	<	t.join();
1233	>	}
1234	>
1235	>	/**
1236	>	* awaitNanos/timed await with 0 wait times out immediately
1237	>	*/
1238	>	public void testAwait_Zero() throws InterruptedException {
1239	>	final Mutex sync = new Mutex();
1240	>	final ConditionObject c = sync.newCondition();
1241	>	sync.acquire();
1242	>	assertTrue(c.awaitNanos(0L) <= 0);
1243	>	assertFalse(c.await(0L, NANOSECONDS));
1244	>	sync.release();
1245	>	}
1246	>
1247	>	/**
1248	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1249	>	*/
1250	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1251	>	final Mutex sync = new Mutex();
1252	>	final ConditionObject c = sync.newCondition();
1253	>	sync.acquire();
1254	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1255	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1256	>	sync.release();
1257	>	}
1258	>
1259	>	/**
1260	>	* Tests scenario for
1261	>	* JDK-8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
1262	>	*/
1263	>	public void testInterruptedFailingAcquire() throws InterruptedException {
1264	>	final RuntimeException ex = new RuntimeException();
1265	>
1266	>	// A synchronizer only offering a choice of failure modes
1267	>	class Sync extends AbstractQueuedLongSynchronizer {
1268	>	boolean pleaseThrow;
1269	>	@Override protected boolean tryAcquire(long ignored) {
1270	>	if (pleaseThrow) throw ex;
1271	>	return false;
1272	>	}
1273	>	@Override protected long tryAcquireShared(long ignored) {
1274	>	if (pleaseThrow) throw ex;
1275	>	return -1;
1276	>	}
1277	>	@Override protected boolean tryRelease(long ignored) {
1278	>	return true;
1279	>	}
1280	>	@Override protected boolean tryReleaseShared(long ignored) {
1281	>	return true;
1282	>	}
1283	>	}
1284	>
1285	>	final Sync s = new Sync();
1286	>
1287	>	final Thread thread = newStartedThread(new CheckedRunnable() {
1288	>	public void realRun() {
1289	>	try {
1290	>	if (randomBoolean())
1291	>	s.acquire(1);
1292	>	else
1293	>	s.acquireShared(1);
1294	>	shouldThrow();
1295	>	} catch (Throwable t) {
1296	>	assertSame(ex, t);
1297	>	assertTrue(Thread.interrupted());
1298	>	}
1299	>	}});
1300	>	waitForThreadToEnterWaitState(thread);
1301	>	assertSame(thread, s.getFirstQueuedThread());
1302	>	assertTrue(s.hasQueuedPredecessors());
1303	>	assertTrue(s.hasQueuedThreads());
1304	>	assertEquals(1, s.getQueueLength());
1305	>
1306	>	s.pleaseThrow = true;
1307	>	thread.interrupt();
1308	>	s.release(1);
1309	>	awaitTermination(thread);
1310		}
1311
1312		}

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