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Comparing jsr166/src/test/tck/AbstractQueuedLongSynchronizerTest.java (file contents):
Revision 1.3 by dl, Wed Apr 5 11:24:55 2006 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
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.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,
30	<	* 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);
50	>
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);
55	>
56	>	@Override protected boolean tryRelease(long releases) {
57	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
58	>	setState(UNLOCKED);
59		return true;
60		}
48	–
49	–	public AbstractQueuedLongSynchronizer.ConditionObject newCondition() { return new AbstractQueuedLongSynchronizer.ConditionObject(); }
61
62	+	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
63	+	return tryAcquireNanos(LOCKED, nanos);
64	+	}
65	+
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
53	–
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 {
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	<
101	>
102		public boolean tryReleaseShared(long ignore) {
103	<	setState(1 << 62);
103	>	setState(1L << 62);
104		return true;
105		}
106		}
107
108		/**
109	<	* A runnable calling acquireInterruptibly
109	>	* A runnable calling acquireInterruptibly that does not expect to
110	>	* be interrupted.
111		*/
112	<	class InterruptibleSyncRunnable implements Runnable {
112	>	class InterruptibleSyncRunnable extends CheckedRunnable {
113		final Mutex sync;
114	<	InterruptibleSyncRunnable(Mutex l) { sync = l; }
115	<	public void run() {
116	<	try {
78	<	sync.acquireInterruptibly(1);
79	<	} catch(InterruptedException success){}
114	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
115	>	public void realRun() throws InterruptedException {
116	>	sync.acquireInterruptibly();
117		}
118		}
119
83	–
120		/**
121		* A runnable calling acquireInterruptibly that expects to be
122	<	* interrupted
122	>	* interrupted.
123		*/
124	<	class InterruptedSyncRunnable implements Runnable {
124	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
125		final Mutex sync;
126	<	InterruptedSyncRunnable(Mutex l) { sync = l; }
127	<	public void run() {
128	<	try {
129	<	sync.acquireInterruptibly(1);
130	<	threadShouldThrow();
131	<	} catch(InterruptedException success){}
126	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
127	>	public void realRun() throws InterruptedException {
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());
277	>	public void testIsHeldExclusively() {
278	>	Mutex sync = new Mutex();
279	>	assertFalse(sync.isHeldExclusively());
280		}
281	<
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());
285	>	public void testAcquire() {
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
295	<	*/
296	<	public void testTryAcquire() {
297	<	Mutex rl = new Mutex();
298	<	assertTrue(rl.tryAcquire(1));
299	<	assertTrue(rl.isHeldExclusively());
300	<	rl.release(1);
294	>	* tryAcquire on a released sync succeeds
295	>	*/
296	>	public void testTryAcquire() {
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() {
308	<	final Mutex sync = new Mutex();
309	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
310	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
311	<	try {
312	<	assertFalse(sync.hasQueuedThreads());
313	<	sync.acquire(1);
314	<	t1.start();
315	<	Thread.sleep(SHORT_DELAY_MS);
316	<	assertTrue(sync.hasQueuedThreads());
317	<	t2.start();
318	<	Thread.sleep(SHORT_DELAY_MS);
319	<	assertTrue(sync.hasQueuedThreads());
320	<	t1.interrupt();
321	<	Thread.sleep(SHORT_DELAY_MS);
322	<	assertTrue(sync.hasQueuedThreads());
323	<	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	<	}
307	>	public void testHasQueuedThreads() {
308	>	final Mutex sync = new Mutex();
309	>	assertFalse(sync.hasQueuedThreads());
310	>	sync.acquire();
311	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
312	>	waitForQueuedThread(sync, t1);
313	>	assertTrue(sync.hasQueuedThreads());
314	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
315	>	waitForQueuedThread(sync, t2);
316	>	assertTrue(sync.hasQueuedThreads());
317	>	t1.interrupt();
318	>	awaitTermination(t1);
319	>	assertTrue(sync.hasQueuedThreads());
320	>	sync.release();
321	>	awaitTermination(t2);
322	>	assertFalse(sync.hasQueuedThreads());
323	>	}
324
325		/**
326	<	* isQueued(null) throws NPE
326	>	* isQueued(null) throws NullPointerException
327		*/
328	<	public void testIsQueuedNPE() {
329	<	final Mutex sync = new Mutex();
328	>	public void testIsQueuedNPE() {
329	>	final Mutex sync = new Mutex();
330		try {
331		sync.isQueued(null);
332		shouldThrow();
333	<	} catch (NullPointerException success) {
166	<	}
333	>	} catch (NullPointerException success) {}
334		}
335
336		/**
337	<	* isQueued reports whether a thread is queued.
337	>	* isQueued reports whether a thread is queued
338		*/
339	<	public void testIsQueued() {
340	<	final Mutex sync = new Mutex();
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	<	try {
344	<	assertFalse(sync.isQueued(t1));
345	<	assertFalse(sync.isQueued(t2));
346	<	sync.acquire(1);
347	<	t1.start();
348	<	Thread.sleep(SHORT_DELAY_MS);
349	<	assertTrue(sync.isQueued(t1));
350	<	t2.start();
351	<	Thread.sleep(SHORT_DELAY_MS);
352	<	assertTrue(sync.isQueued(t1));
353	<	assertTrue(sync.isQueued(t2));
354	<	t1.interrupt();
355	<	Thread.sleep(SHORT_DELAY_MS);
356	<	assertFalse(sync.isQueued(t1));
357	<	assertTrue(sync.isQueued(t2));
358	<	sync.release(1);
359	<	Thread.sleep(SHORT_DELAY_MS);
360	<	assertFalse(sync.isQueued(t1));
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	assertFalse(sync.isQueued(t2));
196	<	t1.join();
197	<	t2.join();
198	<	} catch(Exception e){
199	<	unexpectedException();
200	<	}
201	<	}
343	>	assertFalse(sync.isQueued(t1));
344	>	assertFalse(sync.isQueued(t2));
345	>	sync.acquire();
346	>	t1.start();
347	>	waitForQueuedThread(sync, t1);
348	>	assertTrue(sync.isQueued(t1));
349	>	assertFalse(sync.isQueued(t2));
350	>	t2.start();
351	>	waitForQueuedThread(sync, t2);
352	>	assertTrue(sync.isQueued(t1));
353	>	assertTrue(sync.isQueued(t2));
354	>	t1.interrupt();
355	>	awaitTermination(t1);
356	>	assertFalse(sync.isQueued(t1));
357	>	assertTrue(sync.isQueued(t2));
358	>	sync.release();
359	>	awaitTermination(t2);
360	>	assertFalse(sync.isQueued(t1));
361	>	assertFalse(sync.isQueued(t2));
362	>	}
363
364		/**
365		* getFirstQueuedThread returns first waiting thread or null if none
366		*/
367	<	public void testGetFirstQueuedThread() {
368	<	final Mutex sync = new Mutex();
369	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
370	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
371	<	try {
372	<	assertNull(sync.getFirstQueuedThread());
373	<	sync.acquire(1);
374	<	t1.start();
375	<	Thread.sleep(SHORT_DELAY_MS);
376	<	assertEquals(t1, sync.getFirstQueuedThread());
377	<	t2.start();
378	<	Thread.sleep(SHORT_DELAY_MS);
379	<	assertEquals(t1, sync.getFirstQueuedThread());
380	<	t1.interrupt();
381	<	Thread.sleep(SHORT_DELAY_MS);
382	<	Thread.sleep(SHORT_DELAY_MS);
383	<	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	<
367	>	public void testGetFirstQueuedThread() {
368	>	final Mutex sync = new Mutex();
369	>	assertNull(sync.getFirstQueuedThread());
370	>	sync.acquire();
371	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
372	>	waitForQueuedThread(sync, t1);
373	>	assertEquals(t1, sync.getFirstQueuedThread());
374	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
375	>	waitForQueuedThread(sync, t2);
376	>	assertEquals(t1, sync.getFirstQueuedThread());
377	>	t1.interrupt();
378	>	awaitTermination(t1);
379	>	assertEquals(t2, sync.getFirstQueuedThread());
380	>	sync.release();
381	>	awaitTermination(t2);
382	>	assertNull(sync.getFirstQueuedThread());
383	>	}
384
385		/**
386		* hasContended reports false if no thread has ever blocked, else true
387		*/
388	<	public void testHasContended() {
389	<	final Mutex sync = new Mutex();
390	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
391	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
392	<	try {
393	<	assertFalse(sync.hasContended());
394	<	sync.acquire(1);
395	<	t1.start();
396	<	Thread.sleep(SHORT_DELAY_MS);
397	<	assertTrue(sync.hasContended());
398	<	t2.start();
399	<	Thread.sleep(SHORT_DELAY_MS);
400	<	assertTrue(sync.hasContended());
401	<	t1.interrupt();
402	<	Thread.sleep(SHORT_DELAY_MS);
403	<	assertTrue(sync.hasContended());
404	<	sync.release(1);
405	<	Thread.sleep(SHORT_DELAY_MS);
255	<	assertTrue(sync.hasContended());
256	<	t1.join();
257	<	t2.join();
258	<	} catch(Exception e){
259	<	unexpectedException();
260	<	}
261	<	}
388	>	public void testHasContended() {
389	>	final Mutex sync = new Mutex();
390	>	assertFalse(sync.hasContended());
391	>	sync.acquire();
392	>	assertFalse(sync.hasContended());
393	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
394	>	waitForQueuedThread(sync, t1);
395	>	assertTrue(sync.hasContended());
396	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
397	>	waitForQueuedThread(sync, t2);
398	>	assertTrue(sync.hasContended());
399	>	t1.interrupt();
400	>	awaitTermination(t1);
401	>	assertTrue(sync.hasContended());
402	>	sync.release();
403	>	awaitTermination(t2);
404	>	assertTrue(sync.hasContended());
405	>	}
406
407		/**
408	<	* getQueuedThreads includes waiting threads
408	>	* getQueuedThreads returns all waiting threads
409		*/
410	<	public void testGetQueuedThreads() {
411	<	final Mutex sync = new Mutex();
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	<	try {
415	<	assertTrue(sync.getQueuedThreads().isEmpty());
416	<	sync.acquire(1);
417	<	assertTrue(sync.getQueuedThreads().isEmpty());
418	<	t1.start();
419	<	Thread.sleep(SHORT_DELAY_MS);
420	<	assertTrue(sync.getQueuedThreads().contains(t1));
421	<	t2.start();
422	<	Thread.sleep(SHORT_DELAY_MS);
423	<	assertTrue(sync.getQueuedThreads().contains(t1));
424	<	assertTrue(sync.getQueuedThreads().contains(t2));
425	<	t1.interrupt();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	assertFalse(sync.getQueuedThreads().contains(t1));
428	<	assertTrue(sync.getQueuedThreads().contains(t2));
429	<	sync.release(1);
430	<	Thread.sleep(SHORT_DELAY_MS);
431	<	assertTrue(sync.getQueuedThreads().isEmpty());
432	<	t1.join();
433	<	t2.join();
290	<	} catch(Exception e){
291	<	unexpectedException();
292	<	}
293	<	}
414	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
415	>	sync.acquire();
416	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
417	>	t1.start();
418	>	waitForQueuedThread(sync, t1);
419	>	assertHasExclusiveQueuedThreads(sync, t1);
420	>	assertTrue(sync.getQueuedThreads().contains(t1));
421	>	assertFalse(sync.getQueuedThreads().contains(t2));
422	>	t2.start();
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	>	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() {
439	<	final Mutex sync = new Mutex();
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	<	try {
443	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
444	<	sync.acquire(1);
445	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
446	<	t1.start();
447	<	Thread.sleep(SHORT_DELAY_MS);
448	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
449	<	t2.start();
450	<	Thread.sleep(SHORT_DELAY_MS);
451	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
452	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
453	<	t1.interrupt();
454	<	Thread.sleep(SHORT_DELAY_MS);
455	<	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
456	<	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
457	<	sync.release(1);
458	<	Thread.sleep(SHORT_DELAY_MS);
459	<	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
460	<	t1.join();
461	<	t2.join();
322	<	} catch(Exception e){
323	<	unexpectedException();
324	<	}
325	<	}
442	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
443	>	sync.acquire();
444	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
445	>	t1.start();
446	>	waitForQueuedThread(sync, t1);
447	>	assertHasExclusiveQueuedThreads(sync, t1);
448	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
449	>	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
450	>	t2.start();
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	>	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() {
467	<	final Mutex sync = new Mutex();
468	<	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
469	<	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
470	<	try {
471	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
472	<	sync.acquire(1);
473	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
474	<	t1.start();
475	<	Thread.sleep(SHORT_DELAY_MS);
476	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
477	<	t2.start();
478	<	Thread.sleep(SHORT_DELAY_MS);
479	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
480	<	t1.interrupt();
481	<	Thread.sleep(SHORT_DELAY_MS);
482	<	assertTrue(sync.getSharedQueuedThreads().isEmpty());
483	<	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	<	}
466	>	public void testGetSharedQueuedThreads_Exclusive() {
467	>	final Mutex sync = new Mutex();
468	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
469	>	sync.acquire();
470	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
471	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
472	>	waitForQueuedThread(sync, t1);
473	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
474	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
475	>	waitForQueuedThread(sync, t2);
476	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
477	>	t1.interrupt();
478	>	awaitTermination(t1);
479	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
480	>	sync.release();
481	>	awaitTermination(t2);
482	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
483	>	}
484
485		/**
486	<	* tryAcquireNanos is interruptible.
486	>	* getSharedQueuedThreads returns all shared waiting threads
487		*/
488	<	public void testInterruptedException2() {
489	<	final Mutex sync = new Mutex();
490	<	sync.acquire(1);
491	<	Thread t = new Thread(new Runnable() {
492	<	public void run() {
493	<	try {
494	<	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
495	<	threadShouldThrow();
496	<	} catch(InterruptedException success){}
497	<	}
498	<	});
499	<	try {
500	<	t.start();
501	<	t.interrupt();
502	<	} catch(Exception e){
503	<	unexpectedException();
504	<	}
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 testTryAcquireNanos_Interruptible() {
515	+	final Mutex sync = new Mutex();
516	+	sync.acquire();
517	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
518	+	public void realRun() throws InterruptedException {
519	+	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
520	+	}});
521	+
522	+	waitForQueuedThread(sync, t);
523	+	t.interrupt();
524	+	awaitTermination(t);
525	+	}
526
527		/**
528	<	* TryAcquire on exclusively held sync fails
529	<	*/
530	<	public void testTryAcquireWhenSynced() {
531	<	final Mutex sync = new Mutex();
532	<	sync.acquire(1);
533	<	Thread t = new Thread(new Runnable() {
534	<	public void run() {
535	<	threadAssertFalse(sync.tryAcquire(1));
536	<	}
537	<	});
538	<	try {
539	<	t.start();
540	<	t.join();
394	<	sync.release(1);
395	<	} catch(Exception e){
396	<	unexpectedException();
397	<	}
398	<	}
528	>	* tryAcquire on exclusively held sync fails
529	>	*/
530	>	public void testTryAcquireWhenSynced() {
531	>	final Mutex sync = new Mutex();
532	>	sync.acquire();
533	>	Thread t = newStartedThread(new CheckedRunnable() {
534	>	public void realRun() {
535	>	assertFalse(sync.tryAcquire());
536	>	}});
537	>
538	>	awaitTermination(t);
539	>	sync.release();
540	>	}
541
542		/**
543		* tryAcquireNanos on an exclusively held sync times out
544		*/
545	<	public void testAcquireNanos_Timeout() {
546	<	final Mutex sync = new Mutex();
547	<	sync.acquire(1);
548	<	Thread t = new Thread(new Runnable() {
549	<	public void run() {
550	<	try {
551	<	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
552	<	} catch (Exception ex) {
553	<	threadUnexpectedException();
554	<	}
555	<	}
556	<	});
557	<	try {
558	<	t.start();
559	<	t.join();
418	<	sync.release(1);
419	<	} catch(Exception e){
420	<	unexpectedException();
421	<	}
422	<	}
423	<
424	<
545	>	public void testAcquireNanos_Timeout() {
546	>	final Mutex sync = new Mutex();
547	>	sync.acquire();
548	>	Thread t = newStartedThread(new CheckedRunnable() {
549	>	public void realRun() throws InterruptedException {
550	>	long startTime = System.nanoTime();
551	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
552	>	assertFalse(sync.tryAcquireNanos(nanos));
553	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
554	>	}});
555	>
556	>	awaitTermination(t);
557	>	sync.release();
558	>	}
559	>
560		/**
561		* getState is true when acquired and false when not
562		*/
563		public void testGetState() {
564	<	final Mutex sync = new Mutex();
565	<	sync.acquire(1);
566	<	assertTrue(sync.isHeldExclusively());
567	<	sync.release(1);
568	<	assertFalse(sync.isHeldExclusively());
569	<	Thread t = new Thread(new Runnable() {
570	<	public void run() {
571	<	sync.acquire(1);
572	<	try {
573	<	Thread.sleep(SMALL_DELAY_MS);
574	<	}
575	<	catch(Exception e) {
576	<	threadUnexpectedException();
577	<	}
578	<	sync.release(1);
579	<	}
580	<	});
581	<	try {
582	<	t.start();
583	<	Thread.sleep(SHORT_DELAY_MS);
584	<	assertTrue(sync.isHeldExclusively());
450	<	t.join();
451	<	assertFalse(sync.isHeldExclusively());
452	<	} catch(Exception e){
453	<	unexpectedException();
454	<	}
564	>	final Mutex sync = new Mutex();
565	>	sync.acquire();
566	>	assertTrue(sync.isHeldExclusively());
567	>	sync.release();
568	>	assertFalse(sync.isHeldExclusively());
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();
575	>	assertTrue(acquired.releaseShared(0));
576	>	done.acquireShared(0);
577	>	sync.release();
578	>	}});
579	>
580	>	acquired.acquireShared(0);
581	>	assertTrue(sync.isHeldExclusively());
582	>	assertTrue(done.releaseShared(0));
583	>	awaitTermination(t);
584	>	assertFalse(sync.isHeldExclusively());
585		}
586
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	–	sync.release(1);
470	–	t.join();
471	–	} catch(Exception e){
472	–	unexpectedException();
473	–	}
474	–	}
475	–
587		/**
588		* acquireInterruptibly succeeds when released, else is interruptible
589		*/
590	<	public void testAcquireInterruptibly2() {
591	<	final Mutex sync = new Mutex();
592	<	try {
593	<	sync.acquireInterruptibly(1);
594	<	} catch(Exception e) {
595	<	unexpectedException();
596	<	}
597	<	Thread t = new Thread(new InterruptedSyncRunnable(sync));
598	<	try {
599	<	t.start();
600	<	t.interrupt();
601	<	assertTrue(sync.isHeldExclusively());
602	<	t.join();
603	<	} catch(Exception e){
604	<	unexpectedException();
494	<	}
590	>	public void testAcquireInterruptibly() throws InterruptedException {
591	>	final Mutex sync = new Mutex();
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());
605		}
606
607		/**
608		* owns is true for a condition created by sync else false
609		*/
610		public void testOwns() {
611	<	final Mutex sync = new Mutex();
612	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
611	>	final Mutex sync = new Mutex();
612	>	final ConditionObject c = sync.newCondition();
613		final Mutex sync2 = new Mutex();
614		assertTrue(sync.owns(c));
615		assertFalse(sync2.owns(c));
#	Line 508 | Line 618 | public class AbstractQueuedLongSynchroni
618		/**
619		* Calling await without holding sync throws IllegalMonitorStateException
620		*/
621	<	public void testAwait_IllegalMonitor() {
622	<	final Mutex sync = new Mutex();
623	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
624	<	try {
625	<	c.await();
626	<	shouldThrow();
627	<	}
628	<	catch (IllegalMonitorStateException success) {
629	<	}
630	<	catch (Exception ex) {
631	<	unexpectedException();
621	>	public void testAwait_IMSE() {
622	>	final Mutex sync = new Mutex();
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() {
639	<	final Mutex sync = new Mutex();
640	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
638	>	public void testSignal_IMSE() {
639	>	final Mutex sync = new Mutex();
640	>	final ConditionObject c = sync.newCondition();
641		try {
642		c.signal();
643		shouldThrow();
644	<	}
645	<	catch (IllegalMonitorStateException success) {
536	<	}
537	<	catch (Exception ex) {
538	<	unexpectedException();
539	<	}
540	<	}
541	<
542	<	/**
543	<	* awaitNanos without a signal times out
544	<	*/
545	<	public void testAwaitNanos_Timeout() {
546	<	final Mutex sync = new Mutex();
547	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
548	<	try {
549	<	sync.acquire(1);
550	<	long t = c.awaitNanos(100);
551	<	assertTrue(t <= 0);
552	<	sync.release(1);
553	<	}
554	<	catch (Exception ex) {
555	<	unexpectedException();
556	<	}
644	>	} catch (IllegalMonitorStateException success) {}
645	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
646		}
647
648		/**
649	<	*  Timed await without a signal times out
649	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
650		*/
651	<	public void testAwait_Timeout() {
652	<	final Mutex sync = new Mutex();
653	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
651	>	public void testSignalAll_IMSE() {
652	>	final Mutex sync = new Mutex();
653	>	final ConditionObject c = sync.newCondition();
654		try {
655	<	sync.acquire(1);
656	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
657	<	sync.release(1);
569	<	}
570	<	catch (Exception ex) {
571	<	unexpectedException();
572	<	}
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() {
664	<	final Mutex sync = new Mutex();
665	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
666	<	try {
667	<	sync.acquire(1);
668	<	java.util.Date d = new java.util.Date();
669	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
670	<	sync.release(1);
671	<	}
587	<	catch (Exception ex) {
588	<	unexpectedException();
589	<	}
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 ConditionObject c = sync.newCondition();
669	>	sync.acquire();
670	>	assertAwaitTimesOut(c, awaitMethod);
671	>	sync.release();
672		}
673
674		/**
675	<	* await returns when signalled
676	<	*/
677	<	public void testAwait() {
678	<	final Mutex sync = new Mutex();
679	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
680	<	Thread t = new Thread(new Runnable() {
681	<	public void run() {
682	<	try {
683	<	sync.acquire(1);
684	<	c.await();
685	<	sync.release(1);
686	<	}
687	<	catch(InterruptedException e) {
688	<	threadUnexpectedException();
689	<	}
690	<	}
691	<	});
692	<
693	<	try {
694	<	t.start();
695	<	Thread.sleep(SHORT_DELAY_MS);
696	<	sync.acquire(1);
697	<	c.signal();
698	<	sync.release(1);
699	<	t.join(SHORT_DELAY_MS);
700	<	assertFalse(t.isAlive());
701	<	}
620	<	catch (Exception ex) {
621	<	unexpectedException();
622	<	}
675	>	* await/awaitNanos/awaitUntil returns when signalled
676	>	*/
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 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();
688	>	assertTrue(acquired.releaseShared(0));
689	>	await(c, awaitMethod);
690	>	sync.release();
691	>	}});
692	>
693	>	acquired.acquireShared(0);
694	>	sync.acquire();
695	>	assertHasWaitersLocked(sync, c, t);
696	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
697	>	c.signal();
698	>	assertHasWaitersLocked(sync, c, NO_THREADS);
699	>	assertHasExclusiveQueuedThreads(sync, t);
700	>	sync.release();
701	>	awaitTermination(t);
702		}
703
625	–
626	–
704		/**
705	<	* hasWaiters throws NPE if null
705	>	* hasWaiters(null) throws NullPointerException
706		*/
707		public void testHasWaitersNPE() {
708	<	final Mutex sync = new Mutex();
708	>	final Mutex sync = new Mutex();
709		try {
710		sync.hasWaiters(null);
711		shouldThrow();
712	<	} catch (NullPointerException success) {
636	<	} catch (Exception ex) {
637	<	unexpectedException();
638	<	}
712	>	} catch (NullPointerException success) {}
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();
719	>	final Mutex sync = new Mutex();
720		try {
721		sync.getWaitQueueLength(null);
722		shouldThrow();
723	<	} catch (NullPointerException success) {
650	<	} catch (Exception ex) {
651	<	unexpectedException();
652	<	}
723	>	} catch (NullPointerException success) {}
724		}
725
655	–
726		/**
727		* getWaitingThreads throws NPE if null
728		*/
729		public void testGetWaitingThreadsNPE() {
730	<	final Mutex sync = new Mutex();
730	>	final Mutex sync = new Mutex();
731		try {
732		sync.getWaitingThreads(null);
733		shouldThrow();
734	<	} catch (NullPointerException success) {
665	<	} catch (Exception ex) {
666	<	unexpectedException();
667	<	}
734	>	} catch (NullPointerException success) {}
735		}
736
670	–
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());
743	<	final Mutex sync2 = new Mutex();
741	>	final Mutex sync = new Mutex();
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	<	} catch (Exception ex) {
683	<	unexpectedException();
684	<	}
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());
755	>	final Mutex sync = new Mutex();
756	>	final ConditionObject c = sync.newCondition();
757		try {
758		sync.hasWaiters(c);
759		shouldThrow();
760	<	} catch (IllegalMonitorStateException success) {
761	<	} catch (Exception ex) {
698	<	unexpectedException();
699	<	}
760	>	} catch (IllegalMonitorStateException success) {}
761	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
762		}
763
702	–
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());
770	<	final Mutex sync2 = new Mutex();
768	>	final Mutex sync = new Mutex();
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	<	} catch (Exception ex) {
715	<	unexpectedException();
716	<	}
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());
782	>	final Mutex sync = new Mutex();
783	>	final ConditionObject c = sync.newCondition();
784		try {
785		sync.getWaitQueueLength(c);
786		shouldThrow();
787	<	} catch (IllegalMonitorStateException success) {
788	<	} catch (Exception ex) {
730	<	unexpectedException();
731	<	}
787	>	} catch (IllegalMonitorStateException success) {}
788	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
789		}
790
734	–
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());
797	<	final Mutex sync2 = new Mutex();
795	>	final Mutex sync = new Mutex();
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	<	} catch (Exception ex) {
747	<	unexpectedException();
748	<	}
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());
809	>	final Mutex sync = new Mutex();
810	>	final ConditionObject c = sync.newCondition();
811		try {
812		sync.getWaitingThreads(c);
813		shouldThrow();
814	<	} catch (IllegalMonitorStateException success) {
815	<	} catch (Exception ex) {
762	<	unexpectedException();
763	<	}
814	>	} catch (IllegalMonitorStateException success) {}
815	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
816		}
817
766	–
767	–
818		/**
819		* hasWaiters returns true when a thread is waiting, else false
820		*/
821		public void testHasWaiters() {
822	<	final Mutex sync = new Mutex();
823	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
824	<	Thread t = new Thread(new Runnable() {
825	<	public void run() {
826	<	try {
827	<	sync.acquire(1);
828	<	threadAssertFalse(sync.hasWaiters(c));
829	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
830	<	c.await();
831	<	sync.release(1);
832	<	}
833	<	catch(InterruptedException e) {
834	<	threadUnexpectedException();
835	<	}
836	<	}
837	<	});
822	>	final Mutex sync = new Mutex();
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();
828	>	assertHasWaitersLocked(sync, c, NO_THREADS);
829	>	assertFalse(sync.hasWaiters(c));
830	>	assertTrue(acquired.releaseShared(0));
831	>	c.await();
832	>	sync.release();
833	>	}});
834	>
835	>	acquired.acquireShared(0);
836	>	sync.acquire();
837	>	assertHasWaitersLocked(sync, c, t);
838	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
839	>	assertTrue(sync.hasWaiters(c));
840	>	c.signal();
841	>	assertHasWaitersLocked(sync, c, NO_THREADS);
842	>	assertHasExclusiveQueuedThreads(sync, t);
843	>	assertFalse(sync.hasWaiters(c));
844	>	sync.release();
845
846	<	try {
847	<	t.start();
791	<	Thread.sleep(SHORT_DELAY_MS);
792	<	sync.acquire(1);
793	<	assertTrue(sync.hasWaiters(c));
794	<	assertEquals(1, sync.getWaitQueueLength(c));
795	<	c.signal();
796	<	sync.release(1);
797	<	Thread.sleep(SHORT_DELAY_MS);
798	<	sync.acquire(1);
799	<	assertFalse(sync.hasWaiters(c));
800	<	assertEquals(0, sync.getWaitQueueLength(c));
801	<	sync.release(1);
802	<	t.join(SHORT_DELAY_MS);
803	<	assertFalse(t.isAlive());
804	<	}
805	<	catch (Exception ex) {
806	<	unexpectedException();
807	<	}
846	>	awaitTermination(t);
847	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
848		}
849
850		/**
851		* getWaitQueueLength returns number of waiting threads
852		*/
853		public void testGetWaitQueueLength() {
854	<	final Mutex sync = new Mutex();
855	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
856	<	Thread t1 = new Thread(new Runnable() {
857	<	public void run() {
858	<	try {
859	<	sync.acquire(1);
860	<	threadAssertFalse(sync.hasWaiters(c));
861	<	threadAssertEquals(0, sync.getWaitQueueLength(c));
862	<	c.await();
863	<	sync.release(1);
864	<	}
865	<	catch(InterruptedException e) {
866	<	threadUnexpectedException();
867	<	}
868	<	}
869	<	});
870	<
871	<	Thread t2 = new Thread(new Runnable() {
872	<	public void run() {
873	<	try {
874	<	sync.acquire(1);
875	<	threadAssertTrue(sync.hasWaiters(c));
876	<	threadAssertEquals(1, sync.getWaitQueueLength(c));
877	<	c.await();
878	<	sync.release(1);
879	<	}
880	<	catch(InterruptedException e) {
881	<	threadUnexpectedException();
882	<	}
883	<	}
884	<	});
885	<
886	<	try {
887	<	t1.start();
888	<	Thread.sleep(SHORT_DELAY_MS);
889	<	t2.start();
890	<	Thread.sleep(SHORT_DELAY_MS);
891	<	sync.acquire(1);
892	<	assertTrue(sync.hasWaiters(c));
893	<	assertEquals(2, sync.getWaitQueueLength(c));
894	<	c.signalAll();
895	<	sync.release(1);
856	<	Thread.sleep(SHORT_DELAY_MS);
857	<	sync.acquire(1);
858	<	assertFalse(sync.hasWaiters(c));
859	<	assertEquals(0, sync.getWaitQueueLength(c));
860	<	sync.release(1);
861	<	t1.join(SHORT_DELAY_MS);
862	<	t2.join(SHORT_DELAY_MS);
863	<	assertFalse(t1.isAlive());
864	<	assertFalse(t2.isAlive());
865	<	}
866	<	catch (Exception ex) {
867	<	unexpectedException();
868	<	}
854	>	final Mutex sync = new Mutex();
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();
861	>	assertHasWaitersLocked(sync, c, NO_THREADS);
862	>	assertEquals(0, sync.getWaitQueueLength(c));
863	>	assertTrue(acquired1.releaseShared(0));
864	>	c.await();
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	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
874	>	public void realRun() throws InterruptedException {
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();
881	>	}});
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	>	assertHasWaitersLocked(sync, c, NO_THREADS);
889	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
890	>	assertEquals(0, sync.getWaitQueueLength(c));
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() {
902	<	final Mutex sync = new Mutex();
903	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
904	<	Thread t1 = new Thread(new Runnable() {
905	<	public void run() {
906	<	try {
907	<	sync.acquire(1);
908	<	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
909	<	c.await();
910	<	sync.release(1);
911	<	}
912	<	catch(InterruptedException e) {
913	<	threadUnexpectedException();
914	<	}
915	<	}
916	<	});
917	<
918	<	Thread t2 = new Thread(new Runnable() {
919	<	public void run() {
920	<	try {
921	<	sync.acquire(1);
922	<	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
923	<	c.await();
924	<	sync.release(1);
925	<	}
926	<	catch(InterruptedException e) {
927	<	threadUnexpectedException();
928	<	}
929	<	}
930	<	});
931	<
932	<	try {
933	<	sync.acquire(1);
934	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
935	<	sync.release(1);
936	<	t1.start();
937	<	Thread.sleep(SHORT_DELAY_MS);
938	<	t2.start();
939	<	Thread.sleep(SHORT_DELAY_MS);
940	<	sync.acquire(1);
941	<	assertTrue(sync.hasWaiters(c));
942	<	assertTrue(sync.getWaitingThreads(c).contains(t1));
943	<	assertTrue(sync.getWaitingThreads(c).contains(t2));
944	<	c.signalAll();
945	<	sync.release(1);
946	<	Thread.sleep(SHORT_DELAY_MS);
947	<	sync.acquire(1);
948	<	assertFalse(sync.hasWaiters(c));
949	<	assertTrue(sync.getWaitingThreads(c).isEmpty());
950	<	sync.release(1);
951	<	t1.join(SHORT_DELAY_MS);
952	<	t2.join(SHORT_DELAY_MS);
953	<	assertFalse(t1.isAlive());
954	<	assertFalse(t2.isAlive());
955	<	}
956	<	catch (Exception ex) {
957	<	unexpectedException();
958	<	}
902	>	final Mutex sync = new Mutex();
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();
909	>	assertHasWaitersLocked(sync, c, NO_THREADS);
910	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
911	>	assertTrue(acquired1.releaseShared(0));
912	>	c.await();
913	>	sync.release();
914	>	}});
915	>
916	>	final Thread t2 = new Thread(new CheckedRunnable() {
917	>	public void realRun() throws InterruptedException {
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();
926	>	}});
927	>
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	>	awaitTermination(t1);
965	>	awaitTermination(t2);
966	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
967		}
968
934	–
935	–
969		/**
970	<	* awaitUninterruptibly doesn't abort on interrupt
970	>	* awaitUninterruptibly is uninterruptible
971		*/
972		public void testAwaitUninterruptibly() {
973	<	final Mutex sync = new Mutex();
974	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
975	<	Thread t = new Thread(new Runnable() {
976	<	public void run() {
977	<	sync.acquire(1);
978	<	c.awaitUninterruptibly();
979	<	sync.release(1);
980	<	}
981	<	});
982	<
983	<	try {
984	<	t.start();
985	<	Thread.sleep(SHORT_DELAY_MS);
986	<	t.interrupt();
987	<	sync.acquire(1);
988	<	c.signal();
989	<	sync.release(1);
990	<	t.join(SHORT_DELAY_MS);
991	<	assertFalse(t.isAlive());
992	<	}
993	<	catch (Exception ex) {
994	<	unexpectedException();
995	<	}
996	<	}
997	<
998	<	/**
999	<	* await is interruptible
1000	<	*/
968	<	public void testAwait_Interrupt() {
969	<	final Mutex sync = new Mutex();
970	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
971	<	Thread t = new Thread(new Runnable() {
972	<	public void run() {
973	<	try {
974	<	sync.acquire(1);
975	<	c.await();
976	<	sync.release(1);
977	<	threadShouldThrow();
978	<	}
979	<	catch(InterruptedException success) {
980	<	}
981	<	}
982	<	});
983	<
984	<	try {
985	<	t.start();
986	<	Thread.sleep(SHORT_DELAY_MS);
987	<	t.interrupt();
988	<	t.join(SHORT_DELAY_MS);
989	<	assertFalse(t.isAlive());
990	<	}
991	<	catch (Exception ex) {
992	<	unexpectedException();
993	<	}
973	>	final Mutex sync = new Mutex();
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	>	pleaseInterrupt.acquireShared(0);
987	>	sync.acquire();
988	>	assertHasWaitersLocked(sync, condition, t);
989	>	sync.release();
990	>	t.interrupt();
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	<	* awaitNanos is interruptible
1005	<	*/
1006	<	public void testAwaitNanos_Interrupt() {
1007	<	final Mutex sync = new Mutex();
1008	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1009	<	Thread t = new Thread(new Runnable() {
1010	<	public void run() {
1011	<	try {
1012	<	sync.acquire(1);
1013	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
1014	<	sync.release(1);
1015	<	threadShouldThrow();
1016	<	}
1017	<	catch(InterruptedException success) {
1018	<	}
1019	<	}
1020	<	});
1021	<
1022	<	try {
1023	<	t.start();
1017	<	Thread.sleep(SHORT_DELAY_MS);
1018	<	t.interrupt();
1019	<	t.join(SHORT_DELAY_MS);
1020	<	assertFalse(t.isAlive());
1021	<	}
1022	<	catch (Exception ex) {
1023	<	unexpectedException();
1024	<	}
1025	<	}
1026	<
1027	<	/**
1028	<	* awaitUntil is interruptible
1029	<	*/
1030	<	public void testAwaitUntil_Interrupt() {
1031	<	final Mutex sync = new Mutex();
1032	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1033	<	Thread t = new Thread(new Runnable() {
1034	<	public void run() {
1035	<	try {
1036	<	sync.acquire(1);
1037	<	java.util.Date d = new java.util.Date();
1038	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1039	<	sync.release(1);
1040	<	threadShouldThrow();
1041	<	}
1042	<	catch(InterruptedException success) {
1043	<	}
1044	<	}
1045	<	});
1046	<
1047	<	try {
1048	<	t.start();
1049	<	Thread.sleep(SHORT_DELAY_MS);
1050	<	t.interrupt();
1051	<	t.join(SHORT_DELAY_MS);
1052	<	assertFalse(t.isAlive());
1053	<	}
1054	<	catch (Exception ex) {
1055	<	unexpectedException();
1056	<	}
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();
1017	>	assertTrue(pleaseInterrupt.releaseShared(0));
1018	>	await(c, awaitMethod);
1019	>	}});
1020	>
1021	>	pleaseInterrupt.acquireShared(0);
1022	>	t.interrupt();
1023	>	awaitTermination(t);
1024		}
1025
1026		/**
1027		* signalAll wakes up all threads
1028		*/
1029	<	public void testSignalAll() {
1030	<	final Mutex sync = new Mutex();
1031	<	final AbstractQueuedLongSynchronizer.ConditionObject c = sync.newCondition();
1032	<	Thread t1 = new Thread(new Runnable() {
1033	<	public void run() {
1034	<	try {
1035	<	sync.acquire(1);
1036	<	c.await();
1037	<	sync.release(1);
1038	<	}
1039	<	catch(InterruptedException e) {
1040	<	threadUnexpectedException();
1041	<	}
1042	<	}
1043	<	});
1044	<
1045	<	Thread t2 = new Thread(new Runnable() {
1046	<	public void run() {
1047	<	try {
1048	<	sync.acquire(1);
1049	<	c.await();
1050	<	sync.release(1);
1051	<	}
1052	<	catch(InterruptedException e) {
1053	<	threadUnexpectedException();
1054	<	}
1055	<	}
1056	<	});
1057	<
1058	<	try {
1059	<	t1.start();
1060	<	t2.start();
1061	<	Thread.sleep(SHORT_DELAY_MS);
1062	<	sync.acquire(1);
1063	<	c.signalAll();
1064	<	sync.release(1);
1098	<	t1.join(SHORT_DELAY_MS);
1099	<	t2.join(SHORT_DELAY_MS);
1100	<	assertFalse(t1.isAlive());
1101	<	assertFalse(t2.isAlive());
1102	<	}
1103	<	catch (Exception ex) {
1104	<	unexpectedException();
1105	<	}
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();
1041	>	acquired1.releaseShared(0);
1042	>	await(c, awaitMethod);
1043	>	sync.release();
1044	>	}});
1045	>
1046	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1047	>	public void realRun() throws InterruptedException {
1048	>	sync.acquire();
1049	>	acquired2.releaseShared(0);
1050	>	await(c, awaitMethod);
1051	>	sync.release();
1052	>	}});
1053	>
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	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1061	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1062	>	sync.release();
1063	>	awaitTermination(t1);
1064	>	awaitTermination(t2);
1065		}
1066
1108	–
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);
1117	<	String ls = sync.toString();
1118	<	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
1078	>	* A serialized AQS deserializes with current state, but no queued threads
1079		*/
1080		public void testSerialization() {
1081	<	Mutex l = new Mutex();
1082	<	l.acquire(1);
1083	<	assertTrue(l.isHeldExclusively());
1084	<
1085	<	try {
1086	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1087	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1088	<	out.writeObject(l);
1089	<	out.close();
1090	<
1091	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1092	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1093	<	Mutex r = (Mutex) in.readObject();
1094	<	assertTrue(r.isHeldExclusively());
1095	<	} catch(Exception e){
1096	<	e.printStackTrace();
1097	<	unexpectedException();
1098	<	}
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
1145	–
1101		/**
1102		* tryReleaseShared setting state changes getState
1103		*/
1104		public void testGetStateWithReleaseShared() {
1105	<	final BooleanLatch l = new BooleanLatch();
1106	<	assertFalse(l.isSignalled());
1107	<	l.releaseShared(0);
1108	<	assertTrue(l.isSignalled());
1105	>	final BooleanLatch l = new BooleanLatch();
1106	>	assertFalse(l.isSignalled());
1107	>	assertTrue(l.releaseShared(0));
1108	>	assertTrue(l.isSignalled());
1109		}
1110
1111		/**
1112		* releaseShared has no effect when already signalled
1113		*/
1114		public void testReleaseShared() {
1115	<	final BooleanLatch l = new BooleanLatch();
1116	<	assertFalse(l.isSignalled());
1117	<	l.releaseShared(0);
1118	<	assertTrue(l.isSignalled());
1119	<	l.releaseShared(0);
1120	<	assertTrue(l.isSignalled());
1115	>	final BooleanLatch l = new BooleanLatch();
1116	>	assertFalse(l.isSignalled());
1117	>	assertTrue(l.releaseShared(0));
1118	>	assertTrue(l.isSignalled());
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() {
1127	<	final BooleanLatch l = new BooleanLatch();
1127	>	final BooleanLatch l = new BooleanLatch();
1128
1129	<	Thread t = new Thread(new Runnable() {
1130	<	public void run() {
1131	<	try {
1132	<	threadAssertFalse(l.isSignalled());
1133	<	l.acquireSharedInterruptibly(0);
1134	<	threadAssertTrue(l.isSignalled());
1135	<	} catch(InterruptedException e){
1136	<	threadUnexpectedException();
1137	<	}
1138	<	}
1139	<	});
1140	<	try {
1141	<	t.start();
1142	<	assertFalse(l.isSignalled());
1143	<	Thread.sleep(SHORT_DELAY_MS);
1144	<	l.releaseShared(0);
1190	<	assertTrue(l.isSignalled());
1191	<	t.join();
1192	<	} catch (InterruptedException e){
1193	<	unexpectedException();
1194	<	}
1129	>	Thread t = newStartedThread(new CheckedRunnable() {
1130	>	public void realRun() throws InterruptedException {
1131	>	assertFalse(l.isSignalled());
1132	>	l.acquireSharedInterruptibly(0);
1133	>	assertTrue(l.isSignalled());
1134	>	l.acquireSharedInterruptibly(0);
1135	>	assertTrue(l.isSignalled());
1136	>	}});
1137	>
1138	>	waitForQueuedThread(l, t);
1139	>	assertFalse(l.isSignalled());
1140	>	assertThreadBlocks(t, Thread.State.WAITING);
1141	>	assertHasSharedQueuedThreads(l, t);
1142	>	assertTrue(l.releaseShared(0));
1143	>	assertTrue(l.isSignalled());
1144	>	awaitTermination(t);
1145		}
1196	–
1146
1147		/**
1148	<	* acquireSharedTimed returns after release
1148	>	* tryAcquireSharedNanos returns after release, but not before
1149		*/
1150	<	public void testAsquireSharedTimed() {
1151	<	final BooleanLatch l = new BooleanLatch();
1150	>	public void testTryAcquireSharedNanos() {
1151	>	final BooleanLatch l = new BooleanLatch();
1152
1153	<	Thread t = new Thread(new Runnable() {
1154	<	public void run() {
1155	<	try {
1156	<	threadAssertFalse(l.isSignalled());
1157	<	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1158	<	threadAssertTrue(l.isSignalled());
1159	<
1160	<	} catch(InterruptedException e){
1161	<	threadUnexpectedException();
1162	<	}
1163	<	}
1164	<	});
1165	<	try {
1166	<	t.start();
1167	<	assertFalse(l.isSignalled());
1168	<	Thread.sleep(SHORT_DELAY_MS);
1220	<	l.releaseShared(0);
1221	<	assertTrue(l.isSignalled());
1222	<	t.join();
1223	<	} catch (InterruptedException e){
1224	<	unexpectedException();
1225	<	}
1153	>	Thread t = newStartedThread(new CheckedRunnable() {
1154	>	public void realRun() throws InterruptedException {
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	>	waitForQueuedThread(l, t);
1164	>	assertFalse(l.isSignalled());
1165	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1166	>	assertTrue(l.releaseShared(0));
1167	>	assertTrue(l.isSignalled());
1168	>	awaitTermination(t);
1169		}
1170	<
1170	>
1171		/**
1172	<	* acquireSharedInterruptibly throws IE if interrupted before released
1172	>	* acquireSharedInterruptibly is interruptible
1173		*/
1174	<	public void testAcquireSharedInterruptibly_InterruptedException() {
1174	>	public void testAcquireSharedInterruptibly_Interruptible() {
1175		final BooleanLatch l = new BooleanLatch();
1176	<	Thread t = new Thread(new Runnable() {
1177	<	public void run() {
1178	<	try {
1179	<	threadAssertFalse(l.isSignalled());
1180	<	l.acquireSharedInterruptibly(0);
1181	<	threadShouldThrow();
1182	<	} catch(InterruptedException success){}
1183	<	}
1184	<	});
1185	<	t.start();
1186	<	try {
1244	<	assertFalse(l.isSignalled());
1245	<	t.interrupt();
1246	<	t.join();
1247	<	} catch (InterruptedException e){
1248	<	unexpectedException();
1249	<	}
1176	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1177	>	public void realRun() throws InterruptedException {
1178	>	assertFalse(l.isSignalled());
1179	>	l.acquireSharedInterruptibly(0);
1180	>	}});
1181	>
1182	>	waitForQueuedThread(l, t);
1183	>	assertFalse(l.isSignalled());
1184	>	t.interrupt();
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() {
1192	>	public void testTryAcquireSharedNanos_Interruptible() {
1193		final BooleanLatch l = new BooleanLatch();
1194	<	Thread t = new Thread(new Runnable() {
1195	<	public void run() {
1196	<	try {
1197	<	threadAssertFalse(l.isSignalled());
1198	<	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1199	<	threadShouldThrow();
1200	<	} catch(InterruptedException success){}
1201	<	}
1202	<	});
1203	<	t.start();
1204	<	try {
1205	<	Thread.sleep(SHORT_DELAY_MS);
1269	<	assertFalse(l.isSignalled());
1270	<	t.interrupt();
1271	<	t.join();
1272	<	} catch (InterruptedException e){
1273	<	unexpectedException();
1274	<	}
1194	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1195	>	public void realRun() throws InterruptedException {
1196	>	assertFalse(l.isSignalled());
1197	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1198	>	l.tryAcquireSharedNanos(0, nanos);
1199	>	}});
1200	>
1201	>	waitForQueuedThread(l, t);
1202	>	assertFalse(l.isSignalled());
1203	>	t.interrupt();
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() {
1211	>	public void testTryAcquireSharedNanos_Timeout() {
1212		final BooleanLatch l = new BooleanLatch();
1213	<	Thread t = new Thread(new Runnable() {
1214	<	public void run() {
1215	<	try {
1216	<	threadAssertFalse(l.isSignalled());
1217	<	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1218	<	} catch(InterruptedException ie){
1219	<	threadUnexpectedException();
1220	<	}
1213	>	final BooleanLatch observedQueued = new BooleanLatch();
1214	>	Thread t = newStartedThread(new CheckedRunnable() {
1215	>	public void realRun() throws InterruptedException {
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	<	});
1226	<	t.start();
1227	<	try {
1228	<	Thread.sleep(SHORT_DELAY_MS);
1229	<	assertFalse(l.isSignalled());
1230	<	t.join();
1231	<	} catch (InterruptedException e){
1232	<	unexpectedException();
1233	<	}
1225	>	assertFalse(l.isSignalled());
1226	>	}});
1227	>
1228	>	waitForQueuedThread(l, t);
1229	>	observedQueued.releaseShared(0);
1230	>	assertFalse(l.isSignalled());
1231	>	awaitTermination(t);
1232	>	assertFalse(l.isSignalled());
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
1302	–
1312		}

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