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Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.4 by dl, Thu May 18 10:29:23 2006 UTC vs.
Revision 1.43 by jsr166, Mon Nov 27 23:06:53 2017 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
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11
12	<	import junit.framework.*;
13	<	import java.util.*;
14	<	import java.util.concurrent.*;
15	<	import java.util.concurrent.locks.*;
16	<	import java.io.*;
12	>	import java.util.Arrays;
13	>	import java.util.Collection;
14	>	import java.util.HashSet;
15	>	import java.util.concurrent.ThreadLocalRandom;
16	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer;
17	>	import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject;
18	>
19	>	import junit.framework.AssertionFailedError;
20	>	import junit.framework.Test;
21	>	import junit.framework.TestSuite;
22
23	+	@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom
24		public class AbstractQueuedLongSynchronizerTest extends JSR166TestCase {
25		public static void main(String[] args) {
26	<	junit.textui.TestRunner.run (suite());
26	>	main(suite(), args);
27		}
28		public static Test suite() {
29		return new TestSuite(AbstractQueuedLongSynchronizerTest.class);
30		}
31
32		/**
33	<	* A simple mutex class, adapted from the
34	<	* AbstractQueuedLongSynchronizer javadoc.  Exclusive acquire tests
35	<	* exercise this as a sample user extension.  Other
36	<	* methods/features of AbstractQueuedLongSynchronizerTest are tested
37	<	* via other test classes, including those for ReentrantLock,
30	<	* ReentrantReadWriteLock, and Semaphore
33	>	* A simple mutex class, adapted from the class javadoc.  Exclusive
34	>	* acquire tests exercise this as a sample user extension.
35	>	*
36	>	* Unlike the javadoc sample, we don't track owner thread via
37	>	* AbstractOwnableSynchronizer methods.
38		*/
39		static class Mutex extends AbstractQueuedLongSynchronizer {
40	<	// Use value > 32 bits for locked state
41	<	static final long LOCKED = 1 << 48;
42	<	public boolean isHeldExclusively() {
43	<	return getState() == LOCKED;
40	>	/** An eccentric value > 32 bits for locked synchronizer state. */
41	>	static final long LOCKED = (1L << 63) | (1L << 15);
42	>
43	>	static final long UNLOCKED = 0;
44	>
45	>	/** Owner thread is untracked, so this is really just isLocked(). */
46	>	@Override public boolean isHeldExclusively() {
47	>	long state = getState();
48	>	assertTrue(state == UNLOCKED || state == LOCKED);
49	>	return state == LOCKED;
50		}
51	<
52	<	public boolean tryAcquire(long acquires) {
53	<	return compareAndSetState(0, LOCKED);
51	>
52	>	@Override protected boolean tryAcquire(long acquires) {
53	>	assertEquals(LOCKED, acquires);
54	>	return compareAndSetState(UNLOCKED, LOCKED);
55		}
56	<
57	<	public boolean tryRelease(long releases) {
58	<	if (getState() == 0) throw new IllegalMonitorStateException();
59	<	setState(0);
56	>
57	>	@Override protected boolean tryRelease(long releases) {
58	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
59	>	setState(UNLOCKED);
60		return true;
61		}
48	–
49	–	public AbstractQueuedLongSynchronizer.ConditionObject newCondition() { return new AbstractQueuedLongSynchronizer.ConditionObject(); }
62
63	+	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
64	+	return tryAcquireNanos(LOCKED, nanos);
65	+	}
66	+
67	+	public boolean tryAcquire() {
68	+	return tryAcquire(LOCKED);
69	+	}
70	+
71	+	public boolean tryRelease() {
72	+	return tryRelease(LOCKED);
73	+	}
74	+
75	+	public void acquire() {
76	+	acquire(LOCKED);
77	+	}
78	+
79	+	public void acquireInterruptibly() throws InterruptedException {
80	+	acquireInterruptibly(LOCKED);
81	+	}
82	+
83	+	public void release() {
84	+	release(LOCKED);
85	+	}
86	+
87	+	/** Faux-Implements Lock.newCondition(). */
88	+	public ConditionObject newCondition() {
89	+	return new ConditionObject();
90	+	}
91		}
92
53	–
93		/**
94	<	* A simple latch class, to test shared mode.
94	>	* A minimal latch class, to test shared mode.
95		*/
96	<	static class BooleanLatch extends AbstractQueuedLongSynchronizer {
96	>	static class BooleanLatch extends AbstractQueuedLongSynchronizer {
97		public boolean isSignalled() { return getState() != 0; }
98
99		public long tryAcquireShared(long ignore) {
100	<	return isSignalled()? 1 : -1;
100	>	return isSignalled() ? 1 : -1;
101		}
102	<
102	>
103		public boolean tryReleaseShared(long ignore) {
104	<	setState(1 << 62);
104	>	setState(1L << 62);
105		return true;
106		}
107		}
108
109		/**
110	<	* A runnable calling acquireInterruptibly
110	>	* A runnable calling acquireInterruptibly that does not expect to
111	>	* be interrupted.
112		*/
113	<	class InterruptibleSyncRunnable implements Runnable {
113	>	class InterruptibleSyncRunnable extends CheckedRunnable {
114		final Mutex sync;
115	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
116	<	public void run() {
117	<	try {
78	<	sync.acquireInterruptibly(1);
79	<	} catch(InterruptedException success){}
115	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
116	>	public void realRun() throws InterruptedException {
117	>	sync.acquireInterruptibly();
118		}
119		}
120
83	–
121		/**
122		* A runnable calling acquireInterruptibly that expects to be
123	<	* interrupted
123	>	* interrupted.
124		*/
125	<	class InterruptedSyncRunnable implements Runnable {
125	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
126		final Mutex sync;
127	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
128	<	public void run() {
129	<	try {
130	<	sync.acquireInterruptibly(1);
131	<	threadShouldThrow();
132	<	} catch(InterruptedException success){}
127	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
128	>	public void realRun() throws InterruptedException {
129	>	sync.acquireInterruptibly();
130	>	}
131	>	}
132	>
133	>	/** A constant to clarify calls to checking methods below. */
134	>	static final Thread[] NO_THREADS = new Thread[0];
135	>
136	>	/**
137	>	* Spin-waits until sync.isQueued(t) becomes true.
138	>	*/
139	>	void waitForQueuedThread(AbstractQueuedLongSynchronizer sync,
140	>	Thread t) {
141	>	long startTime = System.nanoTime();
142	>	while (!sync.isQueued(t)) {
143	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
144	>	throw new AssertionFailedError("timed out");
145	>	Thread.yield();
146	>	}
147	>	assertTrue(t.isAlive());
148	>	}
149	>
150	>	/**
151	>	* Checks that sync has exactly the given queued threads.
152	>	*/
153	>	void assertHasQueuedThreads(AbstractQueuedLongSynchronizer sync,
154	>	Thread... expected) {
155	>	Collection<Thread> actual = sync.getQueuedThreads();
156	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
157	>	assertEquals(expected.length, sync.getQueueLength());
158	>	assertEquals(expected.length, actual.size());
159	>	assertEquals(expected.length == 0, actual.isEmpty());
160	>	assertEquals(new HashSet<Thread>(actual),
161	>	new HashSet<Thread>(Arrays.asList(expected)));
162	>	}
163	>
164	>	/**
165	>	* Checks that sync has exactly the given (exclusive) queued threads.
166	>	*/
167	>	void assertHasExclusiveQueuedThreads(AbstractQueuedLongSynchronizer sync,
168	>	Thread... expected) {
169	>	assertHasQueuedThreads(sync, expected);
170	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
171	>	new HashSet<Thread>(sync.getQueuedThreads()));
172	>	assertEquals(0, sync.getSharedQueuedThreads().size());
173	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
174	>	}
175	>
176	>	/**
177	>	* Checks that sync has exactly the given (shared) queued threads.
178	>	*/
179	>	void assertHasSharedQueuedThreads(AbstractQueuedLongSynchronizer sync,
180	>	Thread... expected) {
181	>	assertHasQueuedThreads(sync, expected);
182	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
183	>	new HashSet<Thread>(sync.getQueuedThreads()));
184	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
185	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
186	>	}
187	>
188	>	/**
189	>	* Checks that condition c has exactly the given waiter threads,
190	>	* after acquiring mutex.
191	>	*/
192	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
193	>	Thread... threads) {
194	>	sync.acquire();
195	>	assertHasWaitersLocked(sync, c, threads);
196	>	sync.release();
197	>	}
198	>
199	>	/**
200	>	* Checks that condition c has exactly the given waiter threads.
201	>	*/
202	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
203	>	Thread... threads) {
204	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
205	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
206	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
207	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
208	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
209	>	new HashSet<Thread>(Arrays.asList(threads)));
210	>	}
211	>
212	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
213	>
214	>	/**
215	>	* Awaits condition using the specified AwaitMethod.
216	>	*/
217	>	void await(ConditionObject c, AwaitMethod awaitMethod)
218	>	throws InterruptedException {
219	>	long timeoutMillis = 2 * LONG_DELAY_MS;
220	>	switch (awaitMethod) {
221	>	case await:
222	>	c.await();
223	>	break;
224	>	case awaitTimed:
225	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
226	>	break;
227	>	case awaitNanos:
228	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
229	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
230	>	assertTrue(nanosRemaining > 0);
231	>	break;
232	>	case awaitUntil:
233	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
234	>	break;
235	>	default:
236	>	throw new AssertionError();
237		}
238		}
239
240		/**
241	+	* Checks that awaiting the given condition times out (using the
242	+	* default timeout duration).
243	+	*/
244	+	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
245	+	final long timeoutMillis = timeoutMillis();
246	+	final long startTime;
247	+	try {
248	+	switch (awaitMethod) {
249	+	case awaitTimed:
250	+	startTime = System.nanoTime();
251	+	assertFalse(c.await(timeoutMillis, MILLISECONDS));
252	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
253	+	break;
254	+	case awaitNanos:
255	+	startTime = System.nanoTime();
256	+	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
257	+	long nanosRemaining = c.awaitNanos(nanosTimeout);
258	+	assertTrue(nanosRemaining <= 0);
259	+	assertTrue(nanosRemaining > -MILLISECONDS.toNanos(LONG_DELAY_MS));
260	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
261	+	break;
262	+	case awaitUntil:
263	+	// We shouldn't assume that nanoTime and currentTimeMillis
264	+	// use the same time source, so don't use nanoTime here.
265	+	java.util.Date delayedDate = delayedDate(timeoutMillis);
266	+	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
267	+	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
268	+	break;
269	+	default:
270	+	throw new UnsupportedOperationException();
271	+	}
272	+	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
273	+	}
274	+
275	+	/**
276		* isHeldExclusively is false upon construction
277		*/
278	<	public void testIsHeldExclusively() {
279	<	Mutex rl = new Mutex();
280	<	assertFalse(rl.isHeldExclusively());
278	>	public void testIsHeldExclusively() {
279	>	Mutex sync = new Mutex();
280	>	assertFalse(sync.isHeldExclusively());
281		}
282	<
282	>
283		/**
284		* acquiring released sync succeeds
285		*/
286	<	public void testAcquire() {
287	<	Mutex rl = new Mutex();
288	<	rl.acquire(1);
289	<	assertTrue(rl.isHeldExclusively());
290	<	rl.release(1);
291	<	assertFalse(rl.isHeldExclusively());
286	>	public void testAcquire() {
287	>	Mutex sync = new Mutex();
288	>	sync.acquire();
289	>	assertTrue(sync.isHeldExclusively());
290	>	sync.release();
291	>	assertFalse(sync.isHeldExclusively());
292		}
293
294		/**
295	<	* tryAcquire on an released sync succeeds
296	<	*/
297	<	public void testTryAcquire() {
298	<	Mutex rl = new Mutex();
299	<	assertTrue(rl.tryAcquire(1));
300	<	assertTrue(rl.isHeldExclusively());
301	<	rl.release(1);
295	>	* tryAcquire on a released sync succeeds
296	>	*/
297	>	public void testTryAcquire() {
298	>	Mutex sync = new Mutex();
299	>	assertTrue(sync.tryAcquire());
300	>	assertTrue(sync.isHeldExclusively());
301	>	sync.release();
302	>	assertFalse(sync.isHeldExclusively());
303		}
304
305		/**
306		* hasQueuedThreads reports whether there are waiting threads
307		*/
308	<	public void testhasQueuedThreads() {
309	<	final Mutex sync = new Mutex();
310	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
311	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
312	<	try {
313	<	assertFalse(sync.hasQueuedThreads());
314	<	sync.acquire(1);
315	<	t1.start();
316	<	Thread.sleep(SHORT_DELAY_MS);
317	<	assertTrue(sync.hasQueuedThreads());
318	<	t2.start();
319	<	Thread.sleep(SHORT_DELAY_MS);
320	<	assertTrue(sync.hasQueuedThreads());
321	<	t1.interrupt();
322	<	Thread.sleep(SHORT_DELAY_MS);
323	<	assertTrue(sync.hasQueuedThreads());
324	<	sync.release(1);
148	<	Thread.sleep(SHORT_DELAY_MS);
149	<	assertFalse(sync.hasQueuedThreads());
150	<	t1.join();
151	<	t2.join();
152	<	} catch(Exception e){
153	<	unexpectedException();
154	<	}
155	<	}
308	>	public void testHasQueuedThreads() {
309	>	final Mutex sync = new Mutex();
310	>	assertFalse(sync.hasQueuedThreads());
311	>	sync.acquire();
312	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
313	>	waitForQueuedThread(sync, t1);
314	>	assertTrue(sync.hasQueuedThreads());
315	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
316	>	waitForQueuedThread(sync, t2);
317	>	assertTrue(sync.hasQueuedThreads());
318	>	t1.interrupt();
319	>	awaitTermination(t1);
320	>	assertTrue(sync.hasQueuedThreads());
321	>	sync.release();
322	>	awaitTermination(t2);
323	>	assertFalse(sync.hasQueuedThreads());
324	>	}
325
326		/**
327	<	* isQueued(null) throws NPE
327	>	* isQueued(null) throws NullPointerException
328		*/
329	<	public void testIsQueuedNPE() {
330	<	final Mutex sync = new Mutex();
329	>	public void testIsQueuedNPE() {
330	>	final Mutex sync = new Mutex();
331		try {
332		sync.isQueued(null);
333		shouldThrow();
334	<	} catch (NullPointerException success) {
166	<	}
334	>	} catch (NullPointerException success) {}
335		}
336
337		/**
338	<	* isQueued reports whether a thread is queued.
338	>	* isQueued reports whether a thread is queued
339		*/
340	<	public void testIsQueued() {
341	<	final Mutex sync = new Mutex();
340	>	public void testIsQueued() {
341	>	final Mutex sync = new Mutex();
342		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
343		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
344	<	try {
345	<	assertFalse(sync.isQueued(t1));
346	<	assertFalse(sync.isQueued(t2));
347	<	sync.acquire(1);
348	<	t1.start();
349	<	Thread.sleep(SHORT_DELAY_MS);
350	<	assertTrue(sync.isQueued(t1));
351	<	t2.start();
352	<	Thread.sleep(SHORT_DELAY_MS);
353	<	assertTrue(sync.isQueued(t1));
354	<	assertTrue(sync.isQueued(t2));
355	<	t1.interrupt();
356	<	Thread.sleep(SHORT_DELAY_MS);
357	<	assertFalse(sync.isQueued(t1));
358	<	assertTrue(sync.isQueued(t2));
359	<	sync.release(1);
360	<	Thread.sleep(SHORT_DELAY_MS);
361	<	assertFalse(sync.isQueued(t1));
362	<	Thread.sleep(SHORT_DELAY_MS);
363	<	assertFalse(sync.isQueued(t2));
196	<	t1.join();
197	<	t2.join();
198	<	} catch(Exception e){
199	<	unexpectedException();
200	<	}
201	<	}
344	>	assertFalse(sync.isQueued(t1));
345	>	assertFalse(sync.isQueued(t2));
346	>	sync.acquire();
347	>	t1.start();
348	>	waitForQueuedThread(sync, t1);
349	>	assertTrue(sync.isQueued(t1));
350	>	assertFalse(sync.isQueued(t2));
351	>	t2.start();
352	>	waitForQueuedThread(sync, t2);
353	>	assertTrue(sync.isQueued(t1));
354	>	assertTrue(sync.isQueued(t2));
355	>	t1.interrupt();
356	>	awaitTermination(t1);
357	>	assertFalse(sync.isQueued(t1));
358	>	assertTrue(sync.isQueued(t2));
359	>	sync.release();
360	>	awaitTermination(t2);
361	>	assertFalse(sync.isQueued(t1));
362	>	assertFalse(sync.isQueued(t2));
363	>	}
364
365		/**
366		* getFirstQueuedThread returns first waiting thread or null if none
367		*/
368	<	public void testGetFirstQueuedThread() {
369	<	final Mutex sync = new Mutex();
370	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
371	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
372	<	try {
373	<	assertNull(sync.getFirstQueuedThread());
374	<	sync.acquire(1);
375	<	t1.start();
376	<	Thread.sleep(SHORT_DELAY_MS);
377	<	assertEquals(t1, sync.getFirstQueuedThread());
378	<	t2.start();
379	<	Thread.sleep(SHORT_DELAY_MS);
380	<	assertEquals(t1, sync.getFirstQueuedThread());
381	<	t1.interrupt();
382	<	Thread.sleep(SHORT_DELAY_MS);
383	<	Thread.sleep(SHORT_DELAY_MS);
384	<	assertEquals(t2, sync.getFirstQueuedThread());
223	<	sync.release(1);
224	<	Thread.sleep(SHORT_DELAY_MS);
225	<	assertNull(sync.getFirstQueuedThread());
226	<	t1.join();
227	<	t2.join();
228	<	} catch(Exception e){
229	<	unexpectedException();
230	<	}
231	<	}
232	<
368	>	public void testGetFirstQueuedThread() {
369	>	final Mutex sync = new Mutex();
370	>	assertNull(sync.getFirstQueuedThread());
371	>	sync.acquire();
372	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
373	>	waitForQueuedThread(sync, t1);
374	>	assertEquals(t1, sync.getFirstQueuedThread());
375	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
376	>	waitForQueuedThread(sync, t2);
377	>	assertEquals(t1, sync.getFirstQueuedThread());
378	>	t1.interrupt();
379	>	awaitTermination(t1);
380	>	assertEquals(t2, sync.getFirstQueuedThread());
381	>	sync.release();
382	>	awaitTermination(t2);
383	>	assertNull(sync.getFirstQueuedThread());
384	>	}
385
386		/**
387		* hasContended reports false if no thread has ever blocked, else true
388		*/
389	<	public void testHasContended() {
390	<	final Mutex sync = new Mutex();
391	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
392	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
393	<	try {
394	<	assertFalse(sync.hasContended());
395	<	sync.acquire(1);
396	<	t1.start();
397	<	Thread.sleep(SHORT_DELAY_MS);
398	<	assertTrue(sync.hasContended());
399	<	t2.start();
400	<	Thread.sleep(SHORT_DELAY_MS);
401	<	assertTrue(sync.hasContended());
402	<	t1.interrupt();
403	<	Thread.sleep(SHORT_DELAY_MS);
404	<	assertTrue(sync.hasContended());
405	<	sync.release(1);
406	<	Thread.sleep(SHORT_DELAY_MS);
255	<	assertTrue(sync.hasContended());
256	<	t1.join();
257	<	t2.join();
258	<	} catch(Exception e){
259	<	unexpectedException();
260	<	}
261	<	}
389	>	public void testHasContended() {
390	>	final Mutex sync = new Mutex();
391	>	assertFalse(sync.hasContended());
392	>	sync.acquire();
393	>	assertFalse(sync.hasContended());
394	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
395	>	waitForQueuedThread(sync, t1);
396	>	assertTrue(sync.hasContended());
397	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
398	>	waitForQueuedThread(sync, t2);
399	>	assertTrue(sync.hasContended());
400	>	t1.interrupt();
401	>	awaitTermination(t1);
402	>	assertTrue(sync.hasContended());
403	>	sync.release();
404	>	awaitTermination(t2);
405	>	assertTrue(sync.hasContended());
406	>	}
407
408		/**
409	<	* getQueuedThreads includes waiting threads
409	>	* getQueuedThreads returns all waiting threads
410		*/
411	<	public void testGetQueuedThreads() {
412	<	final Mutex sync = new Mutex();
411	>	public void testGetQueuedThreads() {
412	>	final Mutex sync = new Mutex();
413		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
414		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
415	<	try {
416	<	assertTrue(sync.getQueuedThreads().isEmpty());
417	<	sync.acquire(1);
418	<	assertTrue(sync.getQueuedThreads().isEmpty());
419	<	t1.start();
420	<	Thread.sleep(SHORT_DELAY_MS);
421	<	assertTrue(sync.getQueuedThreads().contains(t1));
422	<	t2.start();
423	<	Thread.sleep(SHORT_DELAY_MS);
424	<	assertTrue(sync.getQueuedThreads().contains(t1));
425	<	assertTrue(sync.getQueuedThreads().contains(t2));
426	<	t1.interrupt();
427	<	Thread.sleep(SHORT_DELAY_MS);
428	<	assertFalse(sync.getQueuedThreads().contains(t1));
429	<	assertTrue(sync.getQueuedThreads().contains(t2));
430	<	sync.release(1);
431	<	Thread.sleep(SHORT_DELAY_MS);
432	<	assertTrue(sync.getQueuedThreads().isEmpty());
433	<	t1.join();
434	<	t2.join();
290	<	} catch(Exception e){
291	<	unexpectedException();
292	<	}
293	<	}
415	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
416	>	sync.acquire();
417	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
418	>	t1.start();
419	>	waitForQueuedThread(sync, t1);
420	>	assertHasExclusiveQueuedThreads(sync, t1);
421	>	assertTrue(sync.getQueuedThreads().contains(t1));
422	>	assertFalse(sync.getQueuedThreads().contains(t2));
423	>	t2.start();
424	>	waitForQueuedThread(sync, t2);
425	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
426	>	assertTrue(sync.getQueuedThreads().contains(t1));
427	>	assertTrue(sync.getQueuedThreads().contains(t2));
428	>	t1.interrupt();
429	>	awaitTermination(t1);
430	>	assertHasExclusiveQueuedThreads(sync, t2);
431	>	sync.release();
432	>	awaitTermination(t2);
433	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
434	>	}
435
436		/**
437	<	* getExclusiveQueuedThreads includes waiting threads
437	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
438		*/
439	<	public void testGetExclusiveQueuedThreads() {
440	<	final Mutex sync = new Mutex();
439	>	public void testGetExclusiveQueuedThreads() {
440	>	final Mutex sync = new Mutex();
441		Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
442		Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
443	<	try {
444	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
445	<	sync.acquire(1);
446	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
447	<	t1.start();
448	<	Thread.sleep(SHORT_DELAY_MS);
449	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
450	<	t2.start();
451	<	Thread.sleep(SHORT_DELAY_MS);
452	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
453	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
454	<	t1.interrupt();
455	<	Thread.sleep(SHORT_DELAY_MS);
456	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
457	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
458	<	sync.release(1);
459	<	Thread.sleep(SHORT_DELAY_MS);
460	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
461	<	t1.join();
462	<	t2.join();
322	<	} catch(Exception e){
323	<	unexpectedException();
324	<	}
325	<	}
443	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
444	>	sync.acquire();
445	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
446	>	t1.start();
447	>	waitForQueuedThread(sync, t1);
448	>	assertHasExclusiveQueuedThreads(sync, t1);
449	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
450	>	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
451	>	t2.start();
452	>	waitForQueuedThread(sync, t2);
453	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
454	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
455	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
456	>	t1.interrupt();
457	>	awaitTermination(t1);
458	>	assertHasExclusiveQueuedThreads(sync, t2);
459	>	sync.release();
460	>	awaitTermination(t2);
461	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
462	>	}
463
464		/**
465		* getSharedQueuedThreads does not include exclusively waiting threads
466		*/
467	<	public void testGetSharedQueuedThreads() {
468	<	final Mutex sync = new Mutex();
469	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
470	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
471	<	try {
472	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
473	<	sync.acquire(1);
474	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
475	<	t1.start();
476	<	Thread.sleep(SHORT_DELAY_MS);
477	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
478	<	t2.start();
479	<	Thread.sleep(SHORT_DELAY_MS);
480	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
481	<	t1.interrupt();
482	<	Thread.sleep(SHORT_DELAY_MS);
483	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
484	<	sync.release(1);
348	<	Thread.sleep(SHORT_DELAY_MS);
349	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
350	<	t1.join();
351	<	t2.join();
352	<	} catch(Exception e){
353	<	unexpectedException();
354	<	}
355	<	}
467	>	public void testGetSharedQueuedThreads_Exclusive() {
468	>	final Mutex sync = new Mutex();
469	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
470	>	sync.acquire();
471	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
472	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
473	>	waitForQueuedThread(sync, t1);
474	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
475	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
476	>	waitForQueuedThread(sync, t2);
477	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
478	>	t1.interrupt();
479	>	awaitTermination(t1);
480	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
481	>	sync.release();
482	>	awaitTermination(t2);
483	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
484	>	}
485
486		/**
487	<	* tryAcquireNanos is interruptible.
487	>	* getSharedQueuedThreads returns all shared waiting threads
488		*/
489	<	public void testInterruptedException2() {
490	<	final Mutex sync = new Mutex();
491	<	sync.acquire(1);
492	<	Thread t = new Thread(new Runnable() {
493	<	public void run() {
494	<	try {
495	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
496	<	threadShouldThrow();
497	<	} catch(InterruptedException success){}
498	<	}
499	<	});
500	<	try {
501	<	t.start();
502	<	t.interrupt();
503	<	} catch(Exception e){
504	<	unexpectedException();
505	<	}
489	>	public void testGetSharedQueuedThreads_Shared() {
490	>	final BooleanLatch l = new BooleanLatch();
491	>	assertHasSharedQueuedThreads(l, NO_THREADS);
492	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
493	>	public void realRun() throws InterruptedException {
494	>	l.acquireSharedInterruptibly(0);
495	>	}});
496	>	waitForQueuedThread(l, t1);
497	>	assertHasSharedQueuedThreads(l, t1);
498	>	Thread t2 = newStartedThread(new CheckedRunnable() {
499	>	public void realRun() throws InterruptedException {
500	>	l.acquireSharedInterruptibly(0);
501	>	}});
502	>	waitForQueuedThread(l, t2);
503	>	assertHasSharedQueuedThreads(l, t1, t2);
504	>	t1.interrupt();
505	>	awaitTermination(t1);
506	>	assertHasSharedQueuedThreads(l, t2);
507	>	assertTrue(l.releaseShared(0));
508	>	awaitTermination(t2);
509	>	assertHasSharedQueuedThreads(l, NO_THREADS);
510		}
511
512	+	/**
513	+	* tryAcquireNanos is interruptible
514	+	*/
515	+	public void testTryAcquireNanos_Interruptible() {
516	+	final Mutex sync = new Mutex();
517	+	sync.acquire();
518	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
519	+	public void realRun() throws InterruptedException {
520	+	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
521	+	}});
522	+
523	+	waitForQueuedThread(sync, t);
524	+	t.interrupt();
525	+	awaitTermination(t);
526	+	}
527
528		/**
529	<	* TryAcquire on exclusively held sync fails
530	<	*/
531	<	public void testTryAcquireWhenSynced() {
532	<	final Mutex sync = new Mutex();
533	<	sync.acquire(1);
534	<	Thread t = new Thread(new Runnable() {
535	<	public void run() {
536	<	threadAssertFalse(sync.tryAcquire(1));
537	<	}
538	<	});
539	<	try {
540	<	t.start();
541	<	t.join();
394	<	sync.release(1);
395	<	} catch(Exception e){
396	<	unexpectedException();
397	<	}
398	<	}
529	>	* tryAcquire on exclusively held sync fails
530	>	*/
531	>	public void testTryAcquireWhenSynced() {
532	>	final Mutex sync = new Mutex();
533	>	sync.acquire();
534	>	Thread t = newStartedThread(new CheckedRunnable() {
535	>	public void realRun() {
536	>	assertFalse(sync.tryAcquire());
537	>	}});
538	>
539	>	awaitTermination(t);
540	>	sync.release();
541	>	}
542
543		/**
544		* tryAcquireNanos on an exclusively held sync times out
545		*/
546	<	public void testAcquireNanos_Timeout() {
547	<	final Mutex sync = new Mutex();
548	<	sync.acquire(1);
549	<	Thread t = new Thread(new Runnable() {
550	<	public void run() {
551	<	try {
552	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
553	<	} catch (Exception ex) {
554	<	threadUnexpectedException();
555	<	}
556	<	}
557	<	});
558	<	try {
559	<	t.start();
560	<	t.join();
418	<	sync.release(1);
419	<	} catch(Exception e){
420	<	unexpectedException();
421	<	}
422	<	}
423	<
424	<
546	>	public void testAcquireNanos_Timeout() {
547	>	final Mutex sync = new Mutex();
548	>	sync.acquire();
549	>	Thread t = newStartedThread(new CheckedRunnable() {
550	>	public void realRun() throws InterruptedException {
551	>	long startTime = System.nanoTime();
552	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
553	>	assertFalse(sync.tryAcquireNanos(nanos));
554	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
555	>	}});
556	>
557	>	awaitTermination(t);
558	>	sync.release();
559	>	}
560	>
561		/**
562		* getState is true when acquired and false when not
563		*/
564		public void testGetState() {
565	<	final Mutex sync = new Mutex();
566	<	sync.acquire(1);
567	<	assertTrue(sync.isHeldExclusively());
568	<	sync.release(1);
569	<	assertFalse(sync.isHeldExclusively());
570	<	Thread t = new Thread(new Runnable() {
571	<	public void run() {
572	<	sync.acquire(1);
573	<	try {
574	<	Thread.sleep(SMALL_DELAY_MS);
575	<	}
576	<	catch(Exception e) {
577	<	threadUnexpectedException();
578	<	}
579	<	sync.release(1);
580	<	}
581	<	});
582	<	try {
583	<	t.start();
584	<	Thread.sleep(SHORT_DELAY_MS);
585	<	assertTrue(sync.isHeldExclusively());
450	<	t.join();
451	<	assertFalse(sync.isHeldExclusively());
452	<	} catch(Exception e){
453	<	unexpectedException();
454	<	}
565	>	final Mutex sync = new Mutex();
566	>	sync.acquire();
567	>	assertTrue(sync.isHeldExclusively());
568	>	sync.release();
569	>	assertFalse(sync.isHeldExclusively());
570	>
571	>	final BooleanLatch acquired = new BooleanLatch();
572	>	final BooleanLatch done = new BooleanLatch();
573	>	Thread t = newStartedThread(new CheckedRunnable() {
574	>	public void realRun() throws InterruptedException {
575	>	sync.acquire();
576	>	assertTrue(acquired.releaseShared(0));
577	>	done.acquireShared(0);
578	>	sync.release();
579	>	}});
580	>
581	>	acquired.acquireShared(0);
582	>	assertTrue(sync.isHeldExclusively());
583	>	assertTrue(done.releaseShared(0));
584	>	awaitTermination(t);
585	>	assertFalse(sync.isHeldExclusively());
586		}
587
457	–
458	–	/**
459	–	* acquireInterruptibly is interruptible.
460	–	*/
461	–	public void testAcquireInterruptibly1() {
462	–	final Mutex sync = new Mutex();
463	–	sync.acquire(1);
464	–	Thread t = new Thread(new InterruptedSyncRunnable(sync));
465	–	try {
466	–	t.start();
467	–	Thread.sleep(SHORT_DELAY_MS);
468	–	t.interrupt();
469	–	Thread.sleep(SHORT_DELAY_MS);
470	–	sync.release(1);
471	–	t.join();
472	–	} catch(Exception e){
473	–	unexpectedException();
474	–	}
475	–	}
476	–
588		/**
589		* acquireInterruptibly succeeds when released, else is interruptible
590		*/
591	<	public void testAcquireInterruptibly2() {
592	<	final Mutex sync = new Mutex();
593	<	try {
594	<	sync.acquireInterruptibly(1);
595	<	} catch(Exception e) {
596	<	unexpectedException();
597	<	}
598	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
599	<	try {
600	<	t.start();
601	<	t.interrupt();
602	<	assertTrue(sync.isHeldExclusively());
603	<	t.join();
604	<	} catch(Exception e){
605	<	unexpectedException();
495	<	}
591	>	public void testAcquireInterruptibly() throws InterruptedException {
592	>	final Mutex sync = new Mutex();
593	>	final BooleanLatch threadStarted = new BooleanLatch();
594	>	sync.acquireInterruptibly();
595	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
596	>	public void realRun() throws InterruptedException {
597	>	assertTrue(threadStarted.releaseShared(0));
598	>	sync.acquireInterruptibly();
599	>	}});
600	>
601	>	threadStarted.acquireShared(0);
602	>	waitForQueuedThread(sync, t);
603	>	t.interrupt();
604	>	awaitTermination(t);
605	>	assertTrue(sync.isHeldExclusively());
606		}
607
608		/**
609		* owns is true for a condition created by sync else false
610		*/
611		public void testOwns() {
612	<	final Mutex sync = new Mutex();
613	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
612	>	final Mutex sync = new Mutex();
613	>	final ConditionObject c = sync.newCondition();
614		final Mutex sync2 = new Mutex();
615		assertTrue(sync.owns(c));
616		assertFalse(sync2.owns(c));
#	Line 509 | Line 619 | public class AbstractQueuedLongSynchroni
619		/**
620		* Calling await without holding sync throws IllegalMonitorStateException
621		*/
622	<	public void testAwait_IllegalMonitor() {
623	<	final Mutex sync = new Mutex();
624	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
625	<	try {
626	<	c.await();
627	<	shouldThrow();
628	<	}
629	<	catch (IllegalMonitorStateException success) {
630	<	}
631	<	catch (Exception ex) {
632	<	unexpectedException();
622	>	public void testAwait_IMSE() {
623	>	final Mutex sync = new Mutex();
624	>	final ConditionObject c = sync.newCondition();
625	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
626	>	long startTime = System.nanoTime();
627	>	try {
628	>	await(c, awaitMethod);
629	>	shouldThrow();
630	>	} catch (IllegalMonitorStateException success) {
631	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
632	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
633		}
634		}
635
636		/**
637		* Calling signal without holding sync throws IllegalMonitorStateException
638		*/
639	<	public void testSignal_IllegalMonitor() {
640	<	final Mutex sync = new Mutex();
641	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
639	>	public void testSignal_IMSE() {
640	>	final Mutex sync = new Mutex();
641	>	final ConditionObject c = sync.newCondition();
642		try {
643		c.signal();
644		shouldThrow();
645	<	}
646	<	catch (IllegalMonitorStateException success) {
537	<	}
538	<	catch (Exception ex) {
539	<	unexpectedException();
540	<	}
541	<	}
542	<
543	<	/**
544	<	* awaitNanos without a signal times out
545	<	*/
546	<	public void testAwaitNanos_Timeout() {
547	<	final Mutex sync = new Mutex();
548	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
549	<	try {
550	<	sync.acquire(1);
551	<	long t = c.awaitNanos(100);
552	<	assertTrue(t <= 0);
553	<	sync.release(1);
554	<	}
555	<	catch (Exception ex) {
556	<	unexpectedException();
557	<	}
645	>	} catch (IllegalMonitorStateException success) {}
646	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
647		}
648
649		/**
650	<	*  Timed await without a signal times out
650	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
651		*/
652	<	public void testAwait_Timeout() {
653	<	final Mutex sync = new Mutex();
654	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
652	>	public void testSignalAll_IMSE() {
653	>	final Mutex sync = new Mutex();
654	>	final ConditionObject c = sync.newCondition();
655		try {
656	<	sync.acquire(1);
657	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
658	<	sync.release(1);
570	<	}
571	<	catch (Exception ex) {
572	<	unexpectedException();
573	<	}
656	>	c.signalAll();
657	>	shouldThrow();
658	>	} catch (IllegalMonitorStateException success) {}
659		}
660
661		/**
662	<	* awaitUntil without a signal times out
662	>	* await/awaitNanos/awaitUntil without a signal times out
663		*/
664	<	public void testAwaitUntil_Timeout() {
665	<	final Mutex sync = new Mutex();
666	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
667	<	try {
668	<	sync.acquire(1);
669	<	java.util.Date d = new java.util.Date();
670	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
671	<	sync.release(1);
672	<	}
588	<	catch (Exception ex) {
589	<	unexpectedException();
590	<	}
664	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
665	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
666	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
667	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
668	>	final Mutex sync = new Mutex();
669	>	final ConditionObject c = sync.newCondition();
670	>	sync.acquire();
671	>	assertAwaitTimesOut(c, awaitMethod);
672	>	sync.release();
673		}
674
675		/**
676	<	* await returns when signalled
677	<	*/
678	<	public void testAwait() {
679	<	final Mutex sync = new Mutex();
680	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
681	<	Thread t = new Thread(new Runnable() {
682	<	public void run() {
683	<	try {
684	<	sync.acquire(1);
685	<	c.await();
686	<	sync.release(1);
687	<	}
688	<	catch(InterruptedException e) {
689	<	threadUnexpectedException();
690	<	}
691	<	}
692	<	});
693	<
694	<	try {
695	<	t.start();
696	<	Thread.sleep(SHORT_DELAY_MS);
697	<	sync.acquire(1);
698	<	c.signal();
699	<	sync.release(1);
700	<	t.join(SHORT_DELAY_MS);
701	<	assertFalse(t.isAlive());
702	<	}
621	<	catch (Exception ex) {
622	<	unexpectedException();
623	<	}
676	>	* await/awaitNanos/awaitUntil returns when signalled
677	>	*/
678	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
679	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
680	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
681	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
682	>	public void testSignal(final AwaitMethod awaitMethod) {
683	>	final Mutex sync = new Mutex();
684	>	final ConditionObject c = sync.newCondition();
685	>	final BooleanLatch acquired = new BooleanLatch();
686	>	Thread t = newStartedThread(new CheckedRunnable() {
687	>	public void realRun() throws InterruptedException {
688	>	sync.acquire();
689	>	assertTrue(acquired.releaseShared(0));
690	>	await(c, awaitMethod);
691	>	sync.release();
692	>	}});
693	>
694	>	acquired.acquireShared(0);
695	>	sync.acquire();
696	>	assertHasWaitersLocked(sync, c, t);
697	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
698	>	c.signal();
699	>	assertHasWaitersLocked(sync, c, NO_THREADS);
700	>	assertHasExclusiveQueuedThreads(sync, t);
701	>	sync.release();
702	>	awaitTermination(t);
703		}
704
626	–
627	–
705		/**
706	<	* hasWaiters throws NPE if null
706	>	* hasWaiters(null) throws NullPointerException
707		*/
708		public void testHasWaitersNPE() {
709	<	final Mutex sync = new Mutex();
709	>	final Mutex sync = new Mutex();
710		try {
711		sync.hasWaiters(null);
712		shouldThrow();
713	<	} catch (NullPointerException success) {
637	<	} catch (Exception ex) {
638	<	unexpectedException();
639	<	}
713	>	} catch (NullPointerException success) {}
714		}
715
716		/**
717	<	* getWaitQueueLength throws NPE if null
717	>	* getWaitQueueLength(null) throws NullPointerException
718		*/
719		public void testGetWaitQueueLengthNPE() {
720	<	final Mutex sync = new Mutex();
720	>	final Mutex sync = new Mutex();
721		try {
722		sync.getWaitQueueLength(null);
723		shouldThrow();
724	<	} catch (NullPointerException success) {
651	<	} catch (Exception ex) {
652	<	unexpectedException();
653	<	}
724	>	} catch (NullPointerException success) {}
725		}
726
656	–
727		/**
728		* getWaitingThreads throws NPE if null
729		*/
730		public void testGetWaitingThreadsNPE() {
731	<	final Mutex sync = new Mutex();
731	>	final Mutex sync = new Mutex();
732		try {
733		sync.getWaitingThreads(null);
734		shouldThrow();
735	<	} catch (NullPointerException success) {
666	<	} catch (Exception ex) {
667	<	unexpectedException();
668	<	}
735	>	} catch (NullPointerException success) {}
736		}
737
671	–
738		/**
739	<	* hasWaiters throws IAE if not owned
739	>	* hasWaiters throws IllegalArgumentException if not owned
740		*/
741		public void testHasWaitersIAE() {
742	<	final Mutex sync = new Mutex();
743	<	final AbstractQueuedLongSynchronizer.ConditionObject c = (sync.newCondition());
744	<	final Mutex sync2 = new Mutex();
742	>	final Mutex sync = new Mutex();
743	>	final ConditionObject c = sync.newCondition();
744	>	final Mutex sync2 = new Mutex();
745		try {
746		sync2.hasWaiters(c);
747		shouldThrow();
748	<	} catch (IllegalArgumentException success) {
749	<	} catch (Exception ex) {
684	<	unexpectedException();
685	<	}
748	>	} catch (IllegalArgumentException success) {}
749	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
750		}
751
752		/**
753	<	* hasWaiters throws IMSE if not synced
753	>	* hasWaiters throws IllegalMonitorStateException if not synced
754		*/
755		public void testHasWaitersIMSE() {
756	<	final Mutex sync = new Mutex();
757	<	final AbstractQueuedLongSynchronizer.ConditionObject c = (sync.newCondition());
756	>	final Mutex sync = new Mutex();
757	>	final ConditionObject c = sync.newCondition();
758		try {
759		sync.hasWaiters(c);
760		shouldThrow();
761	<	} catch (IllegalMonitorStateException success) {
762	<	} catch (Exception ex) {
699	<	unexpectedException();
700	<	}
761	>	} catch (IllegalMonitorStateException success) {}
762	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
763		}
764
703	–
765		/**
766	<	* getWaitQueueLength throws IAE if not owned
766	>	* getWaitQueueLength throws IllegalArgumentException if not owned
767		*/
768		public void testGetWaitQueueLengthIAE() {
769	<	final Mutex sync = new Mutex();
770	<	final AbstractQueuedLongSynchronizer.ConditionObject c = (sync.newCondition());
771	<	final Mutex sync2 = new Mutex();
769	>	final Mutex sync = new Mutex();
770	>	final ConditionObject c = sync.newCondition();
771	>	final Mutex sync2 = new Mutex();
772		try {
773		sync2.getWaitQueueLength(c);
774		shouldThrow();
775	<	} catch (IllegalArgumentException success) {
776	<	} catch (Exception ex) {
716	<	unexpectedException();
717	<	}
775	>	} catch (IllegalArgumentException success) {}
776	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
777		}
778
779		/**
780	<	* getWaitQueueLength throws IMSE if not synced
780	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
781		*/
782		public void testGetWaitQueueLengthIMSE() {
783	<	final Mutex sync = new Mutex();
784	<	final AbstractQueuedLongSynchronizer.ConditionObject c = (sync.newCondition());
783	>	final Mutex sync = new Mutex();
784	>	final ConditionObject c = sync.newCondition();
785		try {
786		sync.getWaitQueueLength(c);
787		shouldThrow();
788	<	} catch (IllegalMonitorStateException success) {
789	<	} catch (Exception ex) {
731	<	unexpectedException();
732	<	}
788	>	} catch (IllegalMonitorStateException success) {}
789	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
790		}
791
735	–
792		/**
793	<	* getWaitingThreads throws IAE if not owned
793	>	* getWaitingThreads throws IllegalArgumentException if not owned
794		*/
795		public void testGetWaitingThreadsIAE() {
796	<	final Mutex sync = new Mutex();
797	<	final AbstractQueuedLongSynchronizer.ConditionObject c = (sync.newCondition());
798	<	final Mutex sync2 = new Mutex();
796	>	final Mutex sync = new Mutex();
797	>	final ConditionObject c = sync.newCondition();
798	>	final Mutex sync2 = new Mutex();
799		try {
800		sync2.getWaitingThreads(c);
801		shouldThrow();
802	<	} catch (IllegalArgumentException success) {
803	<	} catch (Exception ex) {
748	<	unexpectedException();
749	<	}
802	>	} catch (IllegalArgumentException success) {}
803	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
804		}
805
806		/**
807	<	* getWaitingThreads throws IMSE if not synced
807	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
808		*/
809		public void testGetWaitingThreadsIMSE() {
810	<	final Mutex sync = new Mutex();
811	<	final AbstractQueuedLongSynchronizer.ConditionObject c = (sync.newCondition());
810	>	final Mutex sync = new Mutex();
811	>	final ConditionObject c = sync.newCondition();
812		try {
813		sync.getWaitingThreads(c);
814		shouldThrow();
815	<	} catch (IllegalMonitorStateException success) {
816	<	} catch (Exception ex) {
763	<	unexpectedException();
764	<	}
815	>	} catch (IllegalMonitorStateException success) {}
816	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
817		}
818
767	–
768	–
819		/**
820		* hasWaiters returns true when a thread is waiting, else false
821		*/
822		public void testHasWaiters() {
823	<	final Mutex sync = new Mutex();
824	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
825	<	Thread t = new Thread(new Runnable() {
826	<	public void run() {
827	<	try {
828	<	sync.acquire(1);
829	<	threadAssertFalse(sync.hasWaiters(c));
830	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
831	<	c.await();
832	<	sync.release(1);
833	<	}
834	<	catch(InterruptedException e) {
835	<	threadUnexpectedException();
836	<	}
837	<	}
838	<	});
823	>	final Mutex sync = new Mutex();
824	>	final ConditionObject c = sync.newCondition();
825	>	final BooleanLatch acquired = new BooleanLatch();
826	>	Thread t = newStartedThread(new CheckedRunnable() {
827	>	public void realRun() throws InterruptedException {
828	>	sync.acquire();
829	>	assertHasWaitersLocked(sync, c, NO_THREADS);
830	>	assertFalse(sync.hasWaiters(c));
831	>	assertTrue(acquired.releaseShared(0));
832	>	c.await();
833	>	sync.release();
834	>	}});
835	>
836	>	acquired.acquireShared(0);
837	>	sync.acquire();
838	>	assertHasWaitersLocked(sync, c, t);
839	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
840	>	assertTrue(sync.hasWaiters(c));
841	>	c.signal();
842	>	assertHasWaitersLocked(sync, c, NO_THREADS);
843	>	assertHasExclusiveQueuedThreads(sync, t);
844	>	assertFalse(sync.hasWaiters(c));
845	>	sync.release();
846
847	<	try {
848	<	t.start();
792	<	Thread.sleep(SHORT_DELAY_MS);
793	<	sync.acquire(1);
794	<	assertTrue(sync.hasWaiters(c));
795	<	assertEquals(1, sync.getWaitQueueLength(c));
796	<	c.signal();
797	<	sync.release(1);
798	<	Thread.sleep(SHORT_DELAY_MS);
799	<	sync.acquire(1);
800	<	assertFalse(sync.hasWaiters(c));
801	<	assertEquals(0, sync.getWaitQueueLength(c));
802	<	sync.release(1);
803	<	t.join(SHORT_DELAY_MS);
804	<	assertFalse(t.isAlive());
805	<	}
806	<	catch (Exception ex) {
807	<	unexpectedException();
808	<	}
847	>	awaitTermination(t);
848	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
849		}
850
851		/**
852		* getWaitQueueLength returns number of waiting threads
853		*/
854		public void testGetWaitQueueLength() {
855	<	final Mutex sync = new Mutex();
856	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
857	<	Thread t1 = new Thread(new Runnable() {
858	<	public void run() {
859	<	try {
860	<	sync.acquire(1);
861	<	threadAssertFalse(sync.hasWaiters(c));
862	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
863	<	c.await();
864	<	sync.release(1);
865	<	}
866	<	catch(InterruptedException e) {
867	<	threadUnexpectedException();
868	<	}
869	<	}
870	<	});
871	<
872	<	Thread t2 = new Thread(new Runnable() {
873	<	public void run() {
874	<	try {
875	<	sync.acquire(1);
876	<	threadAssertTrue(sync.hasWaiters(c));
877	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
878	<	c.await();
879	<	sync.release(1);
880	<	}
881	<	catch(InterruptedException e) {
882	<	threadUnexpectedException();
883	<	}
884	<	}
885	<	});
886	<
887	<	try {
888	<	t1.start();
889	<	Thread.sleep(SHORT_DELAY_MS);
890	<	t2.start();
891	<	Thread.sleep(SHORT_DELAY_MS);
892	<	sync.acquire(1);
893	<	assertTrue(sync.hasWaiters(c));
894	<	assertEquals(2, sync.getWaitQueueLength(c));
895	<	c.signalAll();
896	<	sync.release(1);
857	<	Thread.sleep(SHORT_DELAY_MS);
858	<	sync.acquire(1);
859	<	assertFalse(sync.hasWaiters(c));
860	<	assertEquals(0, sync.getWaitQueueLength(c));
861	<	sync.release(1);
862	<	t1.join(SHORT_DELAY_MS);
863	<	t2.join(SHORT_DELAY_MS);
864	<	assertFalse(t1.isAlive());
865	<	assertFalse(t2.isAlive());
866	<	}
867	<	catch (Exception ex) {
868	<	unexpectedException();
869	<	}
855	>	final Mutex sync = new Mutex();
856	>	final ConditionObject c = sync.newCondition();
857	>	final BooleanLatch acquired1 = new BooleanLatch();
858	>	final BooleanLatch acquired2 = new BooleanLatch();
859	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
860	>	public void realRun() throws InterruptedException {
861	>	sync.acquire();
862	>	assertHasWaitersLocked(sync, c, NO_THREADS);
863	>	assertEquals(0, sync.getWaitQueueLength(c));
864	>	assertTrue(acquired1.releaseShared(0));
865	>	c.await();
866	>	sync.release();
867	>	}});
868	>	acquired1.acquireShared(0);
869	>	sync.acquire();
870	>	assertHasWaitersLocked(sync, c, t1);
871	>	assertEquals(1, sync.getWaitQueueLength(c));
872	>	sync.release();
873	>
874	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
875	>	public void realRun() throws InterruptedException {
876	>	sync.acquire();
877	>	assertHasWaitersLocked(sync, c, t1);
878	>	assertEquals(1, sync.getWaitQueueLength(c));
879	>	assertTrue(acquired2.releaseShared(0));
880	>	c.await();
881	>	sync.release();
882	>	}});
883	>	acquired2.acquireShared(0);
884	>	sync.acquire();
885	>	assertHasWaitersLocked(sync, c, t1, t2);
886	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
887	>	assertEquals(2, sync.getWaitQueueLength(c));
888	>	c.signalAll();
889	>	assertHasWaitersLocked(sync, c, NO_THREADS);
890	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
891	>	assertEquals(0, sync.getWaitQueueLength(c));
892	>	sync.release();
893	>
894	>	awaitTermination(t1);
895	>	awaitTermination(t2);
896	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
897		}
898
899		/**
900		* getWaitingThreads returns only and all waiting threads
901		*/
902		public void testGetWaitingThreads() {
903	<	final Mutex sync = new Mutex();
904	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
905	<	Thread t1 = new Thread(new Runnable() {
906	<	public void run() {
907	<	try {
908	<	sync.acquire(1);
909	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
910	<	c.await();
911	<	sync.release(1);
912	<	}
913	<	catch(InterruptedException e) {
914	<	threadUnexpectedException();
915	<	}
916	<	}
917	<	});
918	<
919	<	Thread t2 = new Thread(new Runnable() {
920	<	public void run() {
921	<	try {
922	<	sync.acquire(1);
923	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
924	<	c.await();
925	<	sync.release(1);
926	<	}
927	<	catch(InterruptedException e) {
928	<	threadUnexpectedException();
929	<	}
930	<	}
931	<	});
932	<
933	<	try {
934	<	sync.acquire(1);
935	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
936	<	sync.release(1);
937	<	t1.start();
938	<	Thread.sleep(SHORT_DELAY_MS);
939	<	t2.start();
940	<	Thread.sleep(SHORT_DELAY_MS);
941	<	sync.acquire(1);
942	<	assertTrue(sync.hasWaiters(c));
943	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
944	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
945	<	c.signalAll();
946	<	sync.release(1);
947	<	Thread.sleep(SHORT_DELAY_MS);
948	<	sync.acquire(1);
949	<	assertFalse(sync.hasWaiters(c));
950	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
951	<	sync.release(1);
952	<	t1.join(SHORT_DELAY_MS);
953	<	t2.join(SHORT_DELAY_MS);
954	<	assertFalse(t1.isAlive());
955	<	assertFalse(t2.isAlive());
956	<	}
957	<	catch (Exception ex) {
958	<	unexpectedException();
959	<	}
903	>	final Mutex sync = new Mutex();
904	>	final ConditionObject c = sync.newCondition();
905	>	final BooleanLatch acquired1 = new BooleanLatch();
906	>	final BooleanLatch acquired2 = new BooleanLatch();
907	>	final Thread t1 = new Thread(new CheckedRunnable() {
908	>	public void realRun() throws InterruptedException {
909	>	sync.acquire();
910	>	assertHasWaitersLocked(sync, c, NO_THREADS);
911	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
912	>	assertTrue(acquired1.releaseShared(0));
913	>	c.await();
914	>	sync.release();
915	>	}});
916	>
917	>	final Thread t2 = new Thread(new CheckedRunnable() {
918	>	public void realRun() throws InterruptedException {
919	>	sync.acquire();
920	>	assertHasWaitersLocked(sync, c, t1);
921	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
922	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
923	>	assertEquals(1, sync.getWaitingThreads(c).size());
924	>	assertTrue(acquired2.releaseShared(0));
925	>	c.await();
926	>	sync.release();
927	>	}});
928	>
929	>	sync.acquire();
930	>	assertHasWaitersLocked(sync, c, NO_THREADS);
931	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
932	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
933	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
934	>	assertEquals(0, sync.getWaitingThreads(c).size());
935	>	sync.release();
936	>
937	>	t1.start();
938	>	acquired1.acquireShared(0);
939	>	sync.acquire();
940	>	assertHasWaitersLocked(sync, c, t1);
941	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
942	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
943	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
944	>	assertEquals(1, sync.getWaitingThreads(c).size());
945	>	sync.release();
946	>
947	>	t2.start();
948	>	acquired2.acquireShared(0);
949	>	sync.acquire();
950	>	assertHasWaitersLocked(sync, c, t1, t2);
951	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
952	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
953	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
954	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
955	>	assertEquals(2, sync.getWaitingThreads(c).size());
956	>	c.signalAll();
957	>	assertHasWaitersLocked(sync, c, NO_THREADS);
958	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
959	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
960	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
961	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
962	>	assertEquals(0, sync.getWaitingThreads(c).size());
963	>	sync.release();
964	>
965	>	awaitTermination(t1);
966	>	awaitTermination(t2);
967	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
968		}
969
935	–
936	–
970		/**
971	<	* awaitUninterruptibly doesn't abort on interrupt
971	>	* awaitUninterruptibly is uninterruptible
972		*/
973		public void testAwaitUninterruptibly() {
974	<	final Mutex sync = new Mutex();
975	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
976	<	Thread t = new Thread(new Runnable() {
977	<	public void run() {
978	<	sync.acquire(1);
979	<	c.awaitUninterruptibly();
980	<	sync.release(1);
981	<	}
982	<	});
983	<
984	<	try {
985	<	t.start();
986	<	Thread.sleep(SHORT_DELAY_MS);
987	<	t.interrupt();
988	<	sync.acquire(1);
989	<	c.signal();
990	<	sync.release(1);
991	<	t.join(SHORT_DELAY_MS);
992	<	assertFalse(t.isAlive());
993	<	}
994	<	catch (Exception ex) {
995	<	unexpectedException();
996	<	}
997	<	}
998	<
999	<	/**
1000	<	* await is interruptible
1001	<	*/
969	<	public void testAwait_Interrupt() {
970	<	final Mutex sync = new Mutex();
971	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
972	<	Thread t = new Thread(new Runnable() {
973	<	public void run() {
974	<	try {
975	<	sync.acquire(1);
976	<	c.await();
977	<	sync.release(1);
978	<	threadShouldThrow();
979	<	}
980	<	catch(InterruptedException success) {
981	<	}
982	<	}
983	<	});
984	<
985	<	try {
986	<	t.start();
987	<	Thread.sleep(SHORT_DELAY_MS);
988	<	t.interrupt();
989	<	t.join(SHORT_DELAY_MS);
990	<	assertFalse(t.isAlive());
991	<	}
992	<	catch (Exception ex) {
993	<	unexpectedException();
994	<	}
974	>	final Mutex sync = new Mutex();
975	>	final ConditionObject condition = sync.newCondition();
976	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
977	>	Thread t = newStartedThread(new CheckedRunnable() {
978	>	public void realRun() {
979	>	sync.acquire();
980	>	assertTrue(pleaseInterrupt.releaseShared(0));
981	>	condition.awaitUninterruptibly();
982	>	assertTrue(Thread.interrupted());
983	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
984	>	sync.release();
985	>	}});
986	>
987	>	pleaseInterrupt.acquireShared(0);
988	>	sync.acquire();
989	>	assertHasWaitersLocked(sync, condition, t);
990	>	sync.release();
991	>	t.interrupt();
992	>	assertHasWaitersUnlocked(sync, condition, t);
993	>	assertThreadBlocks(t, Thread.State.WAITING);
994	>	sync.acquire();
995	>	assertHasWaitersLocked(sync, condition, t);
996	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
997	>	condition.signal();
998	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
999	>	assertHasExclusiveQueuedThreads(sync, t);
1000	>	sync.release();
1001	>	awaitTermination(t);
1002		}
1003
1004		/**
1005	<	* awaitNanos is interruptible
1006	<	*/
1007	<	public void testAwaitNanos_Interrupt() {
1008	<	final Mutex sync = new Mutex();
1009	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1010	<	Thread t = new Thread(new Runnable() {
1011	<	public void run() {
1012	<	try {
1013	<	sync.acquire(1);
1014	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
1015	<	sync.release(1);
1016	<	threadShouldThrow();
1017	<	}
1018	<	catch(InterruptedException success) {
1019	<	}
1020	<	}
1021	<	});
1022	<
1023	<	try {
1024	<	t.start();
1018	<	Thread.sleep(SHORT_DELAY_MS);
1019	<	t.interrupt();
1020	<	t.join(SHORT_DELAY_MS);
1021	<	assertFalse(t.isAlive());
1022	<	}
1023	<	catch (Exception ex) {
1024	<	unexpectedException();
1025	<	}
1026	<	}
1027	<
1028	<	/**
1029	<	* awaitUntil is interruptible
1030	<	*/
1031	<	public void testAwaitUntil_Interrupt() {
1032	<	final Mutex sync = new Mutex();
1033	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1034	<	Thread t = new Thread(new Runnable() {
1035	<	public void run() {
1036	<	try {
1037	<	sync.acquire(1);
1038	<	java.util.Date d = new java.util.Date();
1039	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1040	<	sync.release(1);
1041	<	threadShouldThrow();
1042	<	}
1043	<	catch(InterruptedException success) {
1044	<	}
1045	<	}
1046	<	});
1047	<
1048	<	try {
1049	<	t.start();
1050	<	Thread.sleep(SHORT_DELAY_MS);
1051	<	t.interrupt();
1052	<	t.join(SHORT_DELAY_MS);
1053	<	assertFalse(t.isAlive());
1054	<	}
1055	<	catch (Exception ex) {
1056	<	unexpectedException();
1057	<	}
1005	>	* await/awaitNanos/awaitUntil is interruptible
1006	>	*/
1007	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
1008	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
1009	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
1010	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
1011	>	public void testInterruptible(final AwaitMethod awaitMethod) {
1012	>	final Mutex sync = new Mutex();
1013	>	final ConditionObject c = sync.newCondition();
1014	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1015	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1016	>	public void realRun() throws InterruptedException {
1017	>	sync.acquire();
1018	>	assertTrue(pleaseInterrupt.releaseShared(0));
1019	>	await(c, awaitMethod);
1020	>	}});
1021	>
1022	>	pleaseInterrupt.acquireShared(0);
1023	>	t.interrupt();
1024	>	awaitTermination(t);
1025		}
1026
1027		/**
1028		* signalAll wakes up all threads
1029		*/
1030	<	public void testSignalAll() {
1031	<	final Mutex sync = new Mutex();
1032	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1033	<	Thread t1 = new Thread(new Runnable() {
1034	<	public void run() {
1035	<	try {
1036	<	sync.acquire(1);
1037	<	c.await();
1038	<	sync.release(1);
1039	<	}
1040	<	catch(InterruptedException e) {
1041	<	threadUnexpectedException();
1042	<	}
1043	<	}
1044	<	});
1045	<
1046	<	Thread t2 = new Thread(new Runnable() {
1047	<	public void run() {
1048	<	try {
1049	<	sync.acquire(1);
1050	<	c.await();
1051	<	sync.release(1);
1052	<	}
1053	<	catch(InterruptedException e) {
1054	<	threadUnexpectedException();
1055	<	}
1056	<	}
1057	<	});
1058	<
1059	<	try {
1060	<	t1.start();
1061	<	t2.start();
1062	<	Thread.sleep(SHORT_DELAY_MS);
1063	<	sync.acquire(1);
1064	<	c.signalAll();
1065	<	sync.release(1);
1099	<	t1.join(SHORT_DELAY_MS);
1100	<	t2.join(SHORT_DELAY_MS);
1101	<	assertFalse(t1.isAlive());
1102	<	assertFalse(t2.isAlive());
1103	<	}
1104	<	catch (Exception ex) {
1105	<	unexpectedException();
1106	<	}
1030	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1031	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1032	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1033	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1034	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1035	>	final Mutex sync = new Mutex();
1036	>	final ConditionObject c = sync.newCondition();
1037	>	final BooleanLatch acquired1 = new BooleanLatch();
1038	>	final BooleanLatch acquired2 = new BooleanLatch();
1039	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1040	>	public void realRun() throws InterruptedException {
1041	>	sync.acquire();
1042	>	acquired1.releaseShared(0);
1043	>	await(c, awaitMethod);
1044	>	sync.release();
1045	>	}});
1046	>
1047	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1048	>	public void realRun() throws InterruptedException {
1049	>	sync.acquire();
1050	>	acquired2.releaseShared(0);
1051	>	await(c, awaitMethod);
1052	>	sync.release();
1053	>	}});
1054	>
1055	>	acquired1.acquireShared(0);
1056	>	acquired2.acquireShared(0);
1057	>	sync.acquire();
1058	>	assertHasWaitersLocked(sync, c, t1, t2);
1059	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1060	>	c.signalAll();
1061	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1062	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1063	>	sync.release();
1064	>	awaitTermination(t1);
1065	>	awaitTermination(t2);
1066		}
1067
1109	–
1068		/**
1069		* toString indicates current state
1070		*/
1071		public void testToString() {
1072		Mutex sync = new Mutex();
1073	<	String us = sync.toString();
1074	<	assertTrue(us.indexOf("State = 0") >= 0);
1075	<	sync.acquire(1);
1118	<	String ls = sync.toString();
1119	<	assertTrue(ls.indexOf("State = " + Mutex.LOCKED) >= 0);
1073	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1074	>	sync.acquire();
1075	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1076		}
1077
1078		/**
1079	<	* A serialized AQS deserializes with current state
1079	>	* A serialized AQS deserializes with current state, but no queued threads
1080		*/
1081		public void testSerialization() {
1082	<	Mutex l = new Mutex();
1083	<	l.acquire(1);
1084	<	assertTrue(l.isHeldExclusively());
1085	<
1086	<	try {
1087	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1088	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1089	<	out.writeObject(l);
1090	<	out.close();
1091	<
1092	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1093	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1094	<	Mutex r = (Mutex) in.readObject();
1095	<	assertTrue(r.isHeldExclusively());
1096	<	} catch(Exception e){
1097	<	e.printStackTrace();
1098	<	unexpectedException();
1099	<	}
1082	>	Mutex sync = new Mutex();
1083	>	assertFalse(serialClone(sync).isHeldExclusively());
1084	>	sync.acquire();
1085	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1086	>	waitForQueuedThread(sync, t);
1087	>	assertTrue(sync.isHeldExclusively());
1088	>
1089	>	Mutex clone = serialClone(sync);
1090	>	assertTrue(clone.isHeldExclusively());
1091	>	assertHasExclusiveQueuedThreads(sync, t);
1092	>	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1093	>	t.interrupt();
1094	>	awaitTermination(t);
1095	>	sync.release();
1096	>	assertFalse(sync.isHeldExclusively());
1097	>	assertTrue(clone.isHeldExclusively());
1098	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1099	>	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1100		}
1101
1146	–
1102		/**
1103		* tryReleaseShared setting state changes getState
1104		*/
1105		public void testGetStateWithReleaseShared() {
1106	<	final BooleanLatch l = new BooleanLatch();
1107	<	assertFalse(l.isSignalled());
1108	<	l.releaseShared(0);
1109	<	assertTrue(l.isSignalled());
1106	>	final BooleanLatch l = new BooleanLatch();
1107	>	assertFalse(l.isSignalled());
1108	>	assertTrue(l.releaseShared(0));
1109	>	assertTrue(l.isSignalled());
1110		}
1111
1112		/**
1113		* releaseShared has no effect when already signalled
1114		*/
1115		public void testReleaseShared() {
1116	<	final BooleanLatch l = new BooleanLatch();
1117	<	assertFalse(l.isSignalled());
1118	<	l.releaseShared(0);
1119	<	assertTrue(l.isSignalled());
1120	<	l.releaseShared(0);
1121	<	assertTrue(l.isSignalled());
1116	>	final BooleanLatch l = new BooleanLatch();
1117	>	assertFalse(l.isSignalled());
1118	>	assertTrue(l.releaseShared(0));
1119	>	assertTrue(l.isSignalled());
1120	>	assertTrue(l.releaseShared(0));
1121	>	assertTrue(l.isSignalled());
1122		}
1123
1124		/**
1125		* acquireSharedInterruptibly returns after release, but not before
1126		*/
1127		public void testAcquireSharedInterruptibly() {
1128	<	final BooleanLatch l = new BooleanLatch();
1128	>	final BooleanLatch l = new BooleanLatch();
1129
1130	<	Thread t = new Thread(new Runnable() {
1131	<	public void run() {
1132	<	try {
1133	<	threadAssertFalse(l.isSignalled());
1134	<	l.acquireSharedInterruptibly(0);
1135	<	threadAssertTrue(l.isSignalled());
1136	<	} catch(InterruptedException e){
1137	<	threadUnexpectedException();
1138	<	}
1139	<	}
1140	<	});
1141	<	try {
1142	<	t.start();
1143	<	assertFalse(l.isSignalled());
1144	<	Thread.sleep(SHORT_DELAY_MS);
1145	<	l.releaseShared(0);
1191	<	assertTrue(l.isSignalled());
1192	<	t.join();
1193	<	} catch (InterruptedException e){
1194	<	unexpectedException();
1195	<	}
1130	>	Thread t = newStartedThread(new CheckedRunnable() {
1131	>	public void realRun() throws InterruptedException {
1132	>	assertFalse(l.isSignalled());
1133	>	l.acquireSharedInterruptibly(0);
1134	>	assertTrue(l.isSignalled());
1135	>	l.acquireSharedInterruptibly(0);
1136	>	assertTrue(l.isSignalled());
1137	>	}});
1138	>
1139	>	waitForQueuedThread(l, t);
1140	>	assertFalse(l.isSignalled());
1141	>	assertThreadBlocks(t, Thread.State.WAITING);
1142	>	assertHasSharedQueuedThreads(l, t);
1143	>	assertTrue(l.releaseShared(0));
1144	>	assertTrue(l.isSignalled());
1145	>	awaitTermination(t);
1146		}
1197	–
1147
1148		/**
1149	<	* acquireSharedTimed returns after release
1149	>	* tryAcquireSharedNanos returns after release, but not before
1150		*/
1151	<	public void testAsquireSharedTimed() {
1152	<	final BooleanLatch l = new BooleanLatch();
1151	>	public void testTryAcquireSharedNanos() {
1152	>	final BooleanLatch l = new BooleanLatch();
1153
1154	<	Thread t = new Thread(new Runnable() {
1155	<	public void run() {
1156	<	try {
1157	<	threadAssertFalse(l.isSignalled());
1158	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1159	<	threadAssertTrue(l.isSignalled());
1160	<
1161	<	} catch(InterruptedException e){
1162	<	threadUnexpectedException();
1163	<	}
1164	<	}
1165	<	});
1166	<	try {
1167	<	t.start();
1168	<	assertFalse(l.isSignalled());
1169	<	Thread.sleep(SHORT_DELAY_MS);
1221	<	l.releaseShared(0);
1222	<	assertTrue(l.isSignalled());
1223	<	t.join();
1224	<	} catch (InterruptedException e){
1225	<	unexpectedException();
1226	<	}
1154	>	Thread t = newStartedThread(new CheckedRunnable() {
1155	>	public void realRun() throws InterruptedException {
1156	>	assertFalse(l.isSignalled());
1157	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1158	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1159	>	assertTrue(l.isSignalled());
1160	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1161	>	assertTrue(l.isSignalled());
1162	>	}});
1163	>
1164	>	waitForQueuedThread(l, t);
1165	>	assertFalse(l.isSignalled());
1166	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1167	>	assertTrue(l.releaseShared(0));
1168	>	assertTrue(l.isSignalled());
1169	>	awaitTermination(t);
1170		}
1171	<
1171	>
1172		/**
1173	<	* acquireSharedInterruptibly throws IE if interrupted before released
1173	>	* acquireSharedInterruptibly is interruptible
1174		*/
1175	<	public void testAcquireSharedInterruptibly_InterruptedException() {
1175	>	public void testAcquireSharedInterruptibly_Interruptible() {
1176		final BooleanLatch l = new BooleanLatch();
1177	<	Thread t = new Thread(new Runnable() {
1178	<	public void run() {
1179	<	try {
1180	<	threadAssertFalse(l.isSignalled());
1181	<	l.acquireSharedInterruptibly(0);
1182	<	threadShouldThrow();
1183	<	} catch(InterruptedException success){}
1184	<	}
1185	<	});
1186	<	t.start();
1187	<	try {
1245	<	assertFalse(l.isSignalled());
1246	<	t.interrupt();
1247	<	t.join();
1248	<	} catch (InterruptedException e){
1249	<	unexpectedException();
1250	<	}
1177	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1178	>	public void realRun() throws InterruptedException {
1179	>	assertFalse(l.isSignalled());
1180	>	l.acquireSharedInterruptibly(0);
1181	>	}});
1182	>
1183	>	waitForQueuedThread(l, t);
1184	>	assertFalse(l.isSignalled());
1185	>	t.interrupt();
1186	>	awaitTermination(t);
1187	>	assertFalse(l.isSignalled());
1188		}
1189
1190		/**
1191	<	* acquireSharedTimed throws IE if interrupted before released
1191	>	* tryAcquireSharedNanos is interruptible
1192		*/
1193	<	public void testAcquireSharedNanos_InterruptedException() {
1193	>	public void testTryAcquireSharedNanos_Interruptible() {
1194		final BooleanLatch l = new BooleanLatch();
1195	<	Thread t = new Thread(new Runnable() {
1196	<	public void run() {
1197	<	try {
1198	<	threadAssertFalse(l.isSignalled());
1199	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1200	<	threadShouldThrow();
1201	<	} catch(InterruptedException success){}
1202	<	}
1203	<	});
1204	<	t.start();
1205	<	try {
1206	<	Thread.sleep(SHORT_DELAY_MS);
1270	<	assertFalse(l.isSignalled());
1271	<	t.interrupt();
1272	<	t.join();
1273	<	} catch (InterruptedException e){
1274	<	unexpectedException();
1275	<	}
1195	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1196	>	public void realRun() throws InterruptedException {
1197	>	assertFalse(l.isSignalled());
1198	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1199	>	l.tryAcquireSharedNanos(0, nanos);
1200	>	}});
1201	>
1202	>	waitForQueuedThread(l, t);
1203	>	assertFalse(l.isSignalled());
1204	>	t.interrupt();
1205	>	awaitTermination(t);
1206	>	assertFalse(l.isSignalled());
1207		}
1208
1209		/**
1210	<	* acquireSharedTimed times out if not released before timeout
1210	>	* tryAcquireSharedNanos times out if not released before timeout
1211		*/
1212	<	public void testAcquireSharedNanos_Timeout() {
1212	>	public void testTryAcquireSharedNanos_Timeout() {
1213		final BooleanLatch l = new BooleanLatch();
1214	<	Thread t = new Thread(new Runnable() {
1215	<	public void run() {
1216	<	try {
1217	<	threadAssertFalse(l.isSignalled());
1218	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1219	<	} catch(InterruptedException ie){
1220	<	threadUnexpectedException();
1221	<	}
1214	>	final BooleanLatch observedQueued = new BooleanLatch();
1215	>	Thread t = newStartedThread(new CheckedRunnable() {
1216	>	public void realRun() throws InterruptedException {
1217	>	assertFalse(l.isSignalled());
1218	>	for (long millis = timeoutMillis();
1219	>	!observedQueued.isSignalled();
1220	>	millis *= 2) {
1221	>	long nanos = MILLISECONDS.toNanos(millis);
1222	>	long startTime = System.nanoTime();
1223	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1224	>	assertTrue(millisElapsedSince(startTime) >= millis);
1225		}
1226	<	});
1227	<	t.start();
1228	<	try {
1229	<	Thread.sleep(SHORT_DELAY_MS);
1230	<	assertFalse(l.isSignalled());
1231	<	t.join();
1232	<	} catch (InterruptedException e){
1233	<	unexpectedException();
1234	<	}
1226	>	assertFalse(l.isSignalled());
1227	>	}});
1228	>
1229	>	waitForQueuedThread(l, t);
1230	>	observedQueued.releaseShared(0);
1231	>	assertFalse(l.isSignalled());
1232	>	awaitTermination(t);
1233	>	assertFalse(l.isSignalled());
1234	>	}
1235	>
1236	>	/**
1237	>	* awaitNanos/timed await with 0 wait times out immediately
1238	>	*/
1239	>	public void testAwait_Zero() throws InterruptedException {
1240	>	final Mutex sync = new Mutex();
1241	>	final ConditionObject c = sync.newCondition();
1242	>	sync.acquire();
1243	>	assertTrue(c.awaitNanos(0L) <= 0);
1244	>	assertFalse(c.await(0L, NANOSECONDS));
1245	>	sync.release();
1246	>	}
1247	>
1248	>	/**
1249	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1250	>	*/
1251	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1252	>	final Mutex sync = new Mutex();
1253	>	final ConditionObject c = sync.newCondition();
1254	>	sync.acquire();
1255	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1256	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1257	>	sync.release();
1258	>	}
1259	>
1260	>	/**
1261	>	* Tests scenario for
1262	>	* JDK-8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
1263	>	*/
1264	>	public void testInterruptedFailingAcquire() throws InterruptedException {
1265	>	final RuntimeException ex = new RuntimeException();
1266	>
1267	>	// A synchronizer only offering a choice of failure modes
1268	>	class Sync extends AbstractQueuedLongSynchronizer {
1269	>	boolean pleaseThrow;
1270	>	@Override protected boolean tryAcquire(long ignored) {
1271	>	if (pleaseThrow) throw ex;
1272	>	return false;
1273	>	}
1274	>	@Override protected long tryAcquireShared(long ignored) {
1275	>	if (pleaseThrow) throw ex;
1276	>	return -1;
1277	>	}
1278	>	@Override protected boolean tryRelease(long ignored) {
1279	>	return true;
1280	>	}
1281	>	@Override protected boolean tryReleaseShared(long ignored) {
1282	>	return true;
1283	>	}
1284	>	}
1285	>
1286	>	final Sync s = new Sync();
1287	>
1288	>	final Thread thread = newStartedThread(new CheckedRunnable() {
1289	>	public void realRun() {
1290	>	try {
1291	>	if (ThreadLocalRandom.current().nextBoolean())
1292	>	s.acquire(1);
1293	>	else
1294	>	s.acquireShared(1);
1295	>	shouldThrow();
1296	>	} catch (Throwable t) {
1297	>	assertSame(ex, t);
1298	>	assertTrue(Thread.interrupted());
1299	>	}
1300	>	}});
1301	>	waitForThreadToEnterWaitState(thread);
1302	>	assertSame(thread, s.getFirstQueuedThread());
1303	>	assertTrue(s.hasQueuedPredecessors());
1304	>	assertTrue(s.hasQueuedThreads());
1305	>	assertEquals(1, s.getQueueLength());
1306	>
1307	>	s.pleaseThrow = true;
1308	>	thread.interrupt();
1309	>	s.release(1);
1310	>	awaitTermination(thread);
1311		}
1312
1303	–
1313		}

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