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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.15 by dl, Sat Jan 10 20:37:20 2004 UTC vs.
Revision 1.57 by jsr166, Mon Jul 17 21:01:30 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.locks.AbstractQueuedSynchronizer;
16	>	import java.util.concurrent.locks.AbstractQueuedSynchronizer.ConditionObject;
17	>
18	>	import junit.framework.AssertionFailedError;
19	>	import junit.framework.Test;
20	>	import junit.framework.TestSuite;
21
22	+	@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom
23		public class AbstractQueuedSynchronizerTest 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(AbstractQueuedSynchronizerTest.class);
29		}
30
31		/**
32	<	* A simple mutex class, adapted from the
33	<	* AbstractQueuedSynchronizer javadoc.  Exclusive acquire tests
34	<	* exercise this as a sample user extension.  Other
35	<	* methods/features of AbstractQueuedSynchronizerTest 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.  Other
34	>	* methods/features of AbstractQueuedSynchronizer are tested via
35	>	* other test classes, including those for ReentrantLock,
36	>	* ReentrantReadWriteLock, and Semaphore.
37		*/
38		static class Mutex extends AbstractQueuedSynchronizer {
39	<	public boolean isLocked() { return getState() == 1; }
40	<
41	<	public boolean tryAcquireExclusive(int acquires) {
42	<	assertTrue(acquires == 1);
43	<	return compareAndSetState(0, 1);
39	>	/** An eccentric value for locked synchronizer state. */
40	>	static final int LOCKED = (1 << 31) | (1 << 15);
41	>
42	>	static final int UNLOCKED = 0;
43	>
44	>	@Override public boolean isHeldExclusively() {
45	>	int state = getState();
46	>	assertTrue(state == UNLOCKED || state == LOCKED);
47	>	return state == LOCKED;
48	>	}
49	>
50	>	@Override public boolean tryAcquire(int acquires) {
51	>	assertEquals(LOCKED, acquires);
52	>	return compareAndSetState(UNLOCKED, LOCKED);
53		}
54	<
55	<	public boolean tryReleaseExclusive(int releases) {
56	<	setState(0);
54	>
55	>	@Override public boolean tryRelease(int releases) {
56	>	if (getState() != LOCKED) throw new IllegalMonitorStateException();
57	>	assertEquals(LOCKED, releases);
58	>	setState(UNLOCKED);
59		return true;
60		}
61	<
62	<	public void checkConditionAccess(Thread thread) {
63	<	if (getState() == 0) throw new IllegalMonitorStateException();
61	>
62	>	public boolean tryAcquireNanos(long nanos) throws InterruptedException {
63	>	return tryAcquireNanos(LOCKED, nanos);
64		}
65	<
66	<	public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); }
67	<
68	<	public void lock() {
69	<	acquireExclusiveUninterruptibly(1);
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	+	public ConditionObject newCondition() {
87	+	return new ConditionObject();
88	+	}
89		}
90
57	–
91		/**
92		* A simple latch class, to test shared mode.
93		*/
94	<	static class BooleanLatch extends AbstractQueuedSynchronizer {
94	>	static class BooleanLatch extends AbstractQueuedSynchronizer {
95		public boolean isSignalled() { return getState() != 0; }
96
97		public int tryAcquireShared(int ignore) {
98	<	return isSignalled()? 1 : -1;
98	>	return isSignalled() ? 1 : -1;
99		}
100	<
100	>
101		public boolean tryReleaseShared(int ignore) {
102		setState(1);
103		return true;
#	Line 72 | Line 105 | public class AbstractQueuedSynchronizerT
105		}
106
107		/**
108	<	* A runnable calling acquireExclusiveInterruptibly
108	>	* A runnable calling acquireInterruptibly that does not expect to
109	>	* be interrupted.
110		*/
111	<	class InterruptibleLockRunnable implements Runnable {
112	<	final Mutex lock;
113	<	InterruptibleLockRunnable(Mutex l) { lock = l; }
114	<	public void run() {
115	<	try {
82	<	lock.acquireExclusiveInterruptibly(1);
83	<	} catch(InterruptedException success){}
111	>	class InterruptibleSyncRunnable extends CheckedRunnable {
112	>	final Mutex sync;
113	>	InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; }
114	>	public void realRun() throws InterruptedException {
115	>	sync.acquireInterruptibly();
116		}
117		}
118
87	–
119		/**
120	<	* A runnable calling acquireExclusiveInterruptibly that expects to be
121	<	* interrupted
120	>	* A runnable calling acquireInterruptibly that expects to be
121	>	* interrupted.
122		*/
123	<	class InterruptedLockRunnable implements Runnable {
124	<	final Mutex lock;
125	<	InterruptedLockRunnable(Mutex l) { lock = l; }
126	<	public void run() {
127	<	try {
97	<	lock.acquireExclusiveInterruptibly(1);
98	<	threadShouldThrow();
99	<	} catch(InterruptedException success){}
123	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
124	>	final Mutex sync;
125	>	InterruptedSyncRunnable(Mutex sync) { this.sync = sync; }
126	>	public void realRun() throws InterruptedException {
127	>	sync.acquireInterruptibly();
128		}
129		}
130	<
130	>
131	>	/** A constant to clarify calls to checking methods below. */
132	>	static final Thread[] NO_THREADS = new Thread[0];
133	>
134		/**
135	<	* acquireExclusiveUninterruptiblying an releaseExclusiveed lock succeeds
135	>	* Spin-waits until sync.isQueued(t) becomes true.
136		*/
137	<	public void testAcquireExclusiveUninterruptibly() {
138	<	Mutex rl = new Mutex();
139	<	rl.acquireExclusiveUninterruptibly(1);
140	<	assertTrue(rl.isLocked());
141	<	rl.releaseExclusive(1);
137	>	void waitForQueuedThread(AbstractQueuedSynchronizer sync, Thread t) {
138	>	long startTime = System.nanoTime();
139	>	while (!sync.isQueued(t)) {
140	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
141	>	throw new AssertionFailedError("timed out");
142	>	Thread.yield();
143	>	}
144	>	assertTrue(t.isAlive());
145		}
146
147		/**
148	<	* tryAcquireExclusive on an releaseExclusiveed lock succeeds
148	>	* Checks that sync has exactly the given queued threads.
149		*/
150	<	public void testTryAcquireExclusive() {
151	<	Mutex rl = new Mutex();
152	<	assertTrue(rl.tryAcquireExclusive(1));
153	<	assertTrue(rl.isLocked());
154	<	rl.releaseExclusive(1);
150	>	void assertHasQueuedThreads(AbstractQueuedSynchronizer sync,
151	>	Thread... expected) {
152	>	Collection<Thread> actual = sync.getQueuedThreads();
153	>	assertEquals(expected.length > 0, sync.hasQueuedThreads());
154	>	assertEquals(expected.length, sync.getQueueLength());
155	>	assertEquals(expected.length, actual.size());
156	>	assertEquals(expected.length == 0, actual.isEmpty());
157	>	assertEquals(new HashSet<Thread>(actual),
158	>	new HashSet<Thread>(Arrays.asList(expected)));
159		}
160
161		/**
162	<	* hasQueuedThreads reports whether there are waiting threads
162	>	* Checks that sync has exactly the given (exclusive) queued threads.
163		*/
164	<	public void testhasQueuedThreads() {
165	<	final Mutex lock = new Mutex();
166	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
167	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
168	<	try {
169	<	assertFalse(lock.hasQueuedThreads());
170	<	lock.acquireExclusiveUninterruptibly(1);
171	<	t1.start();
134	<	Thread.sleep(SHORT_DELAY_MS);
135	<	assertTrue(lock.hasQueuedThreads());
136	<	t2.start();
137	<	Thread.sleep(SHORT_DELAY_MS);
138	<	assertTrue(lock.hasQueuedThreads());
139	<	t1.interrupt();
140	<	Thread.sleep(SHORT_DELAY_MS);
141	<	assertTrue(lock.hasQueuedThreads());
142	<	lock.releaseExclusive(1);
143	<	Thread.sleep(SHORT_DELAY_MS);
144	<	assertFalse(lock.hasQueuedThreads());
145	<	t1.join();
146	<	t2.join();
147	<	} catch(Exception e){
148	<	unexpectedException();
149	<	}
150	<	}
164	>	void assertHasExclusiveQueuedThreads(AbstractQueuedSynchronizer sync,
165	>	Thread... expected) {
166	>	assertHasQueuedThreads(sync, expected);
167	>	assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()),
168	>	new HashSet<Thread>(sync.getQueuedThreads()));
169	>	assertEquals(0, sync.getSharedQueuedThreads().size());
170	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
171	>	}
172
173		/**
174	<	* isQueued(null) throws NPE
174	>	* Checks that sync has exactly the given (shared) queued threads.
175		*/
176	<	public void testIsQueuedNPE() {
177	<	final Mutex lock = new Mutex();
178	<	try {
179	<	lock.isQueued(null);
180	<	shouldThrow();
181	<	} catch (NullPointerException success) {
182	<	}
176	>	void assertHasSharedQueuedThreads(AbstractQueuedSynchronizer sync,
177	>	Thread... expected) {
178	>	assertHasQueuedThreads(sync, expected);
179	>	assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()),
180	>	new HashSet<Thread>(sync.getQueuedThreads()));
181	>	assertEquals(0, sync.getExclusiveQueuedThreads().size());
182	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
183		}
184
185		/**
186	<	* isQueued reports whether a thread is queued.
186	>	* Checks that condition c has exactly the given waiter threads,
187	>	* after acquiring mutex.
188		*/
189	<	public void testIsQueued() {
190	<	final Mutex lock = new Mutex();
191	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
192	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
193	<	try {
194	<	assertFalse(lock.isQueued(t1));
173	<	assertFalse(lock.isQueued(t2));
174	<	lock.acquireExclusiveUninterruptibly(1);
175	<	t1.start();
176	<	Thread.sleep(SHORT_DELAY_MS);
177	<	assertTrue(lock.isQueued(t1));
178	<	t2.start();
179	<	Thread.sleep(SHORT_DELAY_MS);
180	<	assertTrue(lock.isQueued(t1));
181	<	assertTrue(lock.isQueued(t2));
182	<	t1.interrupt();
183	<	Thread.sleep(SHORT_DELAY_MS);
184	<	assertFalse(lock.isQueued(t1));
185	<	assertTrue(lock.isQueued(t2));
186	<	lock.releaseExclusive(1);
187	<	Thread.sleep(SHORT_DELAY_MS);
188	<	assertFalse(lock.isQueued(t1));
189	<	assertFalse(lock.isQueued(t2));
190	<	t1.join();
191	<	t2.join();
192	<	} catch(Exception e){
193	<	unexpectedException();
194	<	}
195	<	}
189	>	void assertHasWaitersUnlocked(Mutex sync, ConditionObject c,
190	>	Thread... threads) {
191	>	sync.acquire();
192	>	assertHasWaitersLocked(sync, c, threads);
193	>	sync.release();
194	>	}
195
196		/**
197	<	* getFirstQueuedThread returns first waiting thread or null is none
197	>	* Checks that condition c has exactly the given waiter threads.
198		*/
199	<	public void testGetFirstQueuedThread() {
200	<	final Mutex lock = new Mutex();
201	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
202	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
203	<	try {
204	<	assertNull(lock.getFirstQueuedThread());
205	<	lock.acquireExclusiveUninterruptibly(1);
206	<	t1.start();
207	<	Thread.sleep(SHORT_DELAY_MS);
209	<	assertEquals(t1, lock.getFirstQueuedThread());
210	<	t2.start();
211	<	Thread.sleep(SHORT_DELAY_MS);
212	<	assertEquals(t1, lock.getFirstQueuedThread());
213	<	t1.interrupt();
214	<	Thread.sleep(SHORT_DELAY_MS);
215	<	assertEquals(t2, lock.getFirstQueuedThread());
216	<	lock.releaseExclusive(1);
217	<	Thread.sleep(SHORT_DELAY_MS);
218	<	assertNull(lock.getFirstQueuedThread());
219	<	t1.join();
220	<	t2.join();
221	<	} catch(Exception e){
222	<	unexpectedException();
223	<	}
224	<	}
199	>	void assertHasWaitersLocked(Mutex sync, ConditionObject c,
200	>	Thread... threads) {
201	>	assertEquals(threads.length > 0, sync.hasWaiters(c));
202	>	assertEquals(threads.length, sync.getWaitQueueLength(c));
203	>	assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty());
204	>	assertEquals(threads.length, sync.getWaitingThreads(c).size());
205	>	assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)),
206	>	new HashSet<Thread>(Arrays.asList(threads)));
207	>	}
208
209	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
210
211		/**
212	<	* hasContended reports false if no thread has ever blocked, else true
212	>	* Awaits condition using the specified AwaitMethod.
213		*/
214	<	public void testHasContended() {
215	<	final Mutex lock = new Mutex();
216	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
217	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
218	<	try {
219	<	assertFalse(lock.hasContended());
220	<	lock.acquireExclusiveUninterruptibly(1);
221	<	t1.start();
222	<	Thread.sleep(SHORT_DELAY_MS);
223	<	assertTrue(lock.hasContended());
224	<	t2.start();
225	<	Thread.sleep(SHORT_DELAY_MS);
226	<	assertTrue(lock.hasContended());
227	<	t1.interrupt();
228	<	Thread.sleep(SHORT_DELAY_MS);
229	<	assertTrue(lock.hasContended());
230	<	lock.releaseExclusive(1);
231	<	Thread.sleep(SHORT_DELAY_MS);
232	<	assertTrue(lock.hasContended());
233	<	t1.join();
234	<	t2.join();
235	<	} catch(Exception e){
236	<	unexpectedException();
237	<	}
238	<	}
214	>	void await(ConditionObject c, AwaitMethod awaitMethod)
215	>	throws InterruptedException {
216	>	long timeoutMillis = 2 * LONG_DELAY_MS;
217	>	switch (awaitMethod) {
218	>	case await:
219	>	c.await();
220	>	break;
221	>	case awaitTimed:
222	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
223	>	break;
224	>	case awaitNanos:
225	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
226	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
227	>	assertTrue(nanosRemaining > 0);
228	>	break;
229	>	case awaitUntil:
230	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
231	>	break;
232	>	default:
233	>	throw new AssertionError();
234	>	}
235	>	}
236	>
237	>	/**
238	>	* Checks that awaiting the given condition times out (using the
239	>	* default timeout duration).
240	>	*/
241	>	void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) {
242	>	final long timeoutMillis = timeoutMillis();
243	>	final long startTime;
244	>	try {
245	>	switch (awaitMethod) {
246	>	case awaitTimed:
247	>	startTime = System.nanoTime();
248	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
249	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
250	>	break;
251	>	case awaitNanos:
252	>	startTime = System.nanoTime();
253	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
254	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
255	>	assertTrue(nanosRemaining <= 0);
256	>	assertTrue(nanosRemaining > -MILLISECONDS.toNanos(LONG_DELAY_MS));
257	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
258	>	break;
259	>	case awaitUntil:
260	>	// We shouldn't assume that nanoTime and currentTimeMillis
261	>	// use the same time source, so don't use nanoTime here.
262	>	java.util.Date delayedDate = delayedDate(timeoutMillis);
263	>	assertFalse(c.awaitUntil(delayedDate(timeoutMillis)));
264	>	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
265	>	break;
266	>	default:
267	>	throw new UnsupportedOperationException();
268	>	}
269	>	} catch (InterruptedException ie) { threadUnexpectedException(ie); }
270	>	}
271	>
272	>	/**
273	>	* isHeldExclusively is false upon construction
274	>	*/
275	>	public void testIsHeldExclusively() {
276	>	Mutex sync = new Mutex();
277	>	assertFalse(sync.isHeldExclusively());
278	>	}
279	>
280	>	/**
281	>	* acquiring released sync succeeds
282	>	*/
283	>	public void testAcquire() {
284	>	Mutex sync = new Mutex();
285	>	sync.acquire();
286	>	assertTrue(sync.isHeldExclusively());
287	>	sync.release();
288	>	assertFalse(sync.isHeldExclusively());
289	>	}
290	>
291	>	/**
292	>	* tryAcquire on a released sync succeeds
293	>	*/
294	>	public void testTryAcquire() {
295	>	Mutex sync = new Mutex();
296	>	assertTrue(sync.tryAcquire());
297	>	assertTrue(sync.isHeldExclusively());
298	>	sync.release();
299	>	assertFalse(sync.isHeldExclusively());
300	>	}
301
302		/**
303	<	* acquireExclusiveNanos is interruptible.
303	>	* hasQueuedThreads reports whether there are waiting threads
304		*/
305	<	public void testInterruptedException2() {
306	<	final Mutex lock = new Mutex();
307	<	lock.acquireExclusiveUninterruptibly(1);
308	<	Thread t = new Thread(new Runnable() {
309	<	public void run() {
310	<	try {
311	<	lock.acquireExclusiveNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
312	<	threadShouldThrow();
313	<	} catch(InterruptedException success){}
314	<	}
315	<	});
316	<	try {
317	<	t.start();
318	<	t.interrupt();
319	<	} catch(Exception e){
320	<	unexpectedException();
275	<	}
305	>	public void testHasQueuedThreads() {
306	>	final Mutex sync = new Mutex();
307	>	assertFalse(sync.hasQueuedThreads());
308	>	sync.acquire();
309	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
310	>	waitForQueuedThread(sync, t1);
311	>	assertTrue(sync.hasQueuedThreads());
312	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
313	>	waitForQueuedThread(sync, t2);
314	>	assertTrue(sync.hasQueuedThreads());
315	>	t1.interrupt();
316	>	awaitTermination(t1);
317	>	assertTrue(sync.hasQueuedThreads());
318	>	sync.release();
319	>	awaitTermination(t2);
320	>	assertFalse(sync.hasQueuedThreads());
321		}
322
278	–
323		/**
324	<	* TryAcquireExclusive on a locked lock fails
324	>	* isQueued(null) throws NullPointerException
325		*/
326	<	public void testTryAcquireExclusiveWhenLocked() {
327	<	final Mutex lock = new Mutex();
284	<	lock.acquireExclusiveUninterruptibly(1);
285	<	Thread t = new Thread(new Runnable() {
286	<	public void run() {
287	<	threadAssertFalse(lock.tryAcquireExclusive(1));
288	<	}
289	<	});
326	>	public void testIsQueuedNPE() {
327	>	final Mutex sync = new Mutex();
328		try {
329	<	t.start();
330	<	t.join();
331	<	lock.releaseExclusive(1);
332	<	} catch(Exception e){
295	<	unexpectedException();
296	<	}
297	<	}
329	>	sync.isQueued(null);
330	>	shouldThrow();
331	>	} catch (NullPointerException success) {}
332	>	}
333
334		/**
335	<	* acquireExclusiveNanos on a locked lock times out
335	>	* isQueued reports whether a thread is queued
336		*/
337	<	public void testAcquireExclusiveNanos_Timeout() {
338	<	final Mutex lock = new Mutex();
339	<	lock.acquireExclusiveUninterruptibly(1);
340	<	Thread t = new Thread(new Runnable() {
341	<	public void run() {
342	<	try {
343	<	threadAssertFalse(lock.acquireExclusiveNanos(1, 1000 * 1000));
344	<	} catch (Exception ex) {
345	<	threadUnexpectedException();
346	<	}
347	<	}
348	<	});
349	<	try {
350	<	t.start();
351	<	t.join();
352	<	lock.releaseExclusive(1);
353	<	} catch(Exception e){
354	<	unexpectedException();
355	<	}
356	<	}
357	<
358	<
359	<	/**
325	<	* getState is true when acquired and false when not
326	<	*/
327	<	public void testGetState() {
328	<	final Mutex lock = new Mutex();
329	<	lock.acquireExclusiveUninterruptibly(1);
330	<	assertTrue(lock.isLocked());
331	<	lock.releaseExclusive(1);
332	<	assertFalse(lock.isLocked());
333	<	Thread t = new Thread(new Runnable() {
334	<	public void run() {
335	<	lock.acquireExclusiveUninterruptibly(1);
336	<	try {
337	<	Thread.sleep(SMALL_DELAY_MS);
338	<	}
339	<	catch(Exception e) {
340	<	threadUnexpectedException();
341	<	}
342	<	lock.releaseExclusive(1);
343	<	}
344	<	});
345	<	try {
346	<	t.start();
347	<	Thread.sleep(SHORT_DELAY_MS);
348	<	assertTrue(lock.isLocked());
349	<	t.join();
350	<	assertFalse(lock.isLocked());
351	<	} catch(Exception e){
352	<	unexpectedException();
353	<	}
337	>	public void testIsQueued() {
338	>	final Mutex sync = new Mutex();
339	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
340	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
341	>	assertFalse(sync.isQueued(t1));
342	>	assertFalse(sync.isQueued(t2));
343	>	sync.acquire();
344	>	t1.start();
345	>	waitForQueuedThread(sync, t1);
346	>	assertTrue(sync.isQueued(t1));
347	>	assertFalse(sync.isQueued(t2));
348	>	t2.start();
349	>	waitForQueuedThread(sync, t2);
350	>	assertTrue(sync.isQueued(t1));
351	>	assertTrue(sync.isQueued(t2));
352	>	t1.interrupt();
353	>	awaitTermination(t1);
354	>	assertFalse(sync.isQueued(t1));
355	>	assertTrue(sync.isQueued(t2));
356	>	sync.release();
357	>	awaitTermination(t2);
358	>	assertFalse(sync.isQueued(t1));
359	>	assertFalse(sync.isQueued(t2));
360		}
361
362	+	/**
363	+	* getFirstQueuedThread returns first waiting thread or null if none
364	+	*/
365	+	public void testGetFirstQueuedThread() {
366	+	final Mutex sync = new Mutex();
367	+	assertNull(sync.getFirstQueuedThread());
368	+	sync.acquire();
369	+	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
370	+	waitForQueuedThread(sync, t1);
371	+	assertEquals(t1, sync.getFirstQueuedThread());
372	+	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
373	+	waitForQueuedThread(sync, t2);
374	+	assertEquals(t1, sync.getFirstQueuedThread());
375	+	t1.interrupt();
376	+	awaitTermination(t1);
377	+	assertEquals(t2, sync.getFirstQueuedThread());
378	+	sync.release();
379	+	awaitTermination(t2);
380	+	assertNull(sync.getFirstQueuedThread());
381	+	}
382
383		/**
384	<	* acquireExclusiveInterruptibly is interruptible.
384	>	* hasContended reports false if no thread has ever blocked, else true
385		*/
386	<	public void testAcquireInterruptibly1() {
387	<	final Mutex lock = new Mutex();
388	<	lock.acquireExclusiveUninterruptibly(1);
389	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
390	<	try {
391	<	t.start();
392	<	t.interrupt();
393	<	lock.releaseExclusive(1);
394	<	t.join();
395	<	} catch(Exception e){
396	<	unexpectedException();
397	<	}
398	<	}
386	>	public void testHasContended() {
387	>	final Mutex sync = new Mutex();
388	>	assertFalse(sync.hasContended());
389	>	sync.acquire();
390	>	assertFalse(sync.hasContended());
391	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
392	>	waitForQueuedThread(sync, t1);
393	>	assertTrue(sync.hasContended());
394	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
395	>	waitForQueuedThread(sync, t2);
396	>	assertTrue(sync.hasContended());
397	>	t1.interrupt();
398	>	awaitTermination(t1);
399	>	assertTrue(sync.hasContended());
400	>	sync.release();
401	>	awaitTermination(t2);
402	>	assertTrue(sync.hasContended());
403	>	}
404	>
405	>	/**
406	>	* getQueuedThreads returns all waiting threads
407	>	*/
408	>	public void testGetQueuedThreads() {
409	>	final Mutex sync = new Mutex();
410	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
411	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
412	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
413	>	sync.acquire();
414	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
415	>	t1.start();
416	>	waitForQueuedThread(sync, t1);
417	>	assertHasExclusiveQueuedThreads(sync, t1);
418	>	assertTrue(sync.getQueuedThreads().contains(t1));
419	>	assertFalse(sync.getQueuedThreads().contains(t2));
420	>	t2.start();
421	>	waitForQueuedThread(sync, t2);
422	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
423	>	assertTrue(sync.getQueuedThreads().contains(t1));
424	>	assertTrue(sync.getQueuedThreads().contains(t2));
425	>	t1.interrupt();
426	>	awaitTermination(t1);
427	>	assertHasExclusiveQueuedThreads(sync, t2);
428	>	sync.release();
429	>	awaitTermination(t2);
430	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
431	>	}
432	>
433	>	/**
434	>	* getExclusiveQueuedThreads returns all exclusive waiting threads
435	>	*/
436	>	public void testGetExclusiveQueuedThreads() {
437	>	final Mutex sync = new Mutex();
438	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
439	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
440	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
441	>	sync.acquire();
442	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
443	>	t1.start();
444	>	waitForQueuedThread(sync, t1);
445	>	assertHasExclusiveQueuedThreads(sync, t1);
446	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
447	>	assertFalse(sync.getExclusiveQueuedThreads().contains(t2));
448	>	t2.start();
449	>	waitForQueuedThread(sync, t2);
450	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
451	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
452	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
453	>	t1.interrupt();
454	>	awaitTermination(t1);
455	>	assertHasExclusiveQueuedThreads(sync, t2);
456	>	sync.release();
457	>	awaitTermination(t2);
458	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
459	>	}
460	>
461	>	/**
462	>	* getSharedQueuedThreads does not include exclusively waiting threads
463	>	*/
464	>	public void testGetSharedQueuedThreads_Exclusive() {
465	>	final Mutex sync = new Mutex();
466	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
467	>	sync.acquire();
468	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
469	>	Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync));
470	>	waitForQueuedThread(sync, t1);
471	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
472	>	Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync));
473	>	waitForQueuedThread(sync, t2);
474	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
475	>	t1.interrupt();
476	>	awaitTermination(t1);
477	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
478	>	sync.release();
479	>	awaitTermination(t2);
480	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
481	>	}
482
483		/**
484	<	* acquireExclusiveInterruptibly succeeds when released, else is interruptible
484	>	* getSharedQueuedThreads returns all shared waiting threads
485		*/
486	<	public void testAcquireInterruptibly2() {
487	<	final Mutex lock = new Mutex();
488	<	try {
489	<	lock.acquireExclusiveInterruptibly(1);
490	<	} catch(Exception e) {
491	<	unexpectedException();
492	<	}
493	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
494	<	try {
495	<	t.start();
496	<	t.interrupt();
497	<	assertTrue(lock.isLocked());
498	<	t.join();
499	<	} catch(Exception e){
500	<	unexpectedException();
501	<	}
486	>	public void testGetSharedQueuedThreads_Shared() {
487	>	final BooleanLatch l = new BooleanLatch();
488	>	assertHasSharedQueuedThreads(l, NO_THREADS);
489	>	Thread t1 = newStartedThread(new CheckedInterruptedRunnable() {
490	>	public void realRun() throws InterruptedException {
491	>	l.acquireSharedInterruptibly(0);
492	>	}});
493	>	waitForQueuedThread(l, t1);
494	>	assertHasSharedQueuedThreads(l, t1);
495	>	Thread t2 = newStartedThread(new CheckedRunnable() {
496	>	public void realRun() throws InterruptedException {
497	>	l.acquireSharedInterruptibly(0);
498	>	}});
499	>	waitForQueuedThread(l, t2);
500	>	assertHasSharedQueuedThreads(l, t1, t2);
501	>	t1.interrupt();
502	>	awaitTermination(t1);
503	>	assertHasSharedQueuedThreads(l, t2);
504	>	assertTrue(l.releaseShared(0));
505	>	awaitTermination(t2);
506	>	assertHasSharedQueuedThreads(l, NO_THREADS);
507	>	}
508	>
509	>	/**
510	>	* tryAcquireNanos is interruptible
511	>	*/
512	>	public void testTryAcquireNanos_Interruptible() {
513	>	final Mutex sync = new Mutex();
514	>	sync.acquire();
515	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
516	>	public void realRun() throws InterruptedException {
517	>	sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
518	>	}});
519	>
520	>	waitForQueuedThread(sync, t);
521	>	t.interrupt();
522	>	awaitTermination(t);
523	>	}
524	>
525	>	/**
526	>	* tryAcquire on exclusively held sync fails
527	>	*/
528	>	public void testTryAcquireWhenSynced() {
529	>	final Mutex sync = new Mutex();
530	>	sync.acquire();
531	>	Thread t = newStartedThread(new CheckedRunnable() {
532	>	public void realRun() {
533	>	assertFalse(sync.tryAcquire());
534	>	}});
535	>
536	>	awaitTermination(t);
537	>	sync.release();
538	>	}
539	>
540	>	/**
541	>	* tryAcquireNanos on an exclusively held sync times out
542	>	*/
543	>	public void testAcquireNanos_Timeout() {
544	>	final Mutex sync = new Mutex();
545	>	sync.acquire();
546	>	Thread t = newStartedThread(new CheckedRunnable() {
547	>	public void realRun() throws InterruptedException {
548	>	long startTime = System.nanoTime();
549	>	long nanos = MILLISECONDS.toNanos(timeoutMillis());
550	>	assertFalse(sync.tryAcquireNanos(nanos));
551	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
552	>	}});
553	>
554	>	awaitTermination(t);
555	>	sync.release();
556		}
557
558		/**
559	<	* owns is true for a condition created by lock else false
559	>	* getState is true when acquired and false when not
560		*/
561	<	public void testOwns() {
562	<	final Mutex lock = new Mutex();
563	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
564	<	final Mutex lock2 = new Mutex();
565	<	assertTrue(lock.owns(c));
566	<	assertFalse(lock2.owns(c));
561	>	public void testGetState() {
562	>	final Mutex sync = new Mutex();
563	>	sync.acquire();
564	>	assertTrue(sync.isHeldExclusively());
565	>	sync.release();
566	>	assertFalse(sync.isHeldExclusively());
567	>
568	>	final BooleanLatch acquired = new BooleanLatch();
569	>	final BooleanLatch done = new BooleanLatch();
570	>	Thread t = newStartedThread(new CheckedRunnable() {
571	>	public void realRun() throws InterruptedException {
572	>	sync.acquire();
573	>	assertTrue(acquired.releaseShared(0));
574	>	done.acquireShared(0);
575	>	sync.release();
576	>	}});
577	>
578	>	acquired.acquireShared(0);
579	>	assertTrue(sync.isHeldExclusively());
580	>	assertTrue(done.releaseShared(0));
581	>	awaitTermination(t);
582	>	assertFalse(sync.isHeldExclusively());
583		}
584
585		/**
586	<	* Calling await without holding lock throws IllegalMonitorStateException
587	<	*/
588	<	public void testAwait_IllegalMonitor() {
589	<	final Mutex lock = new Mutex();
590	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
591	<	try {
592	<	c.await();
593	<	shouldThrow();
594	<	}
595	<	catch (IllegalMonitorStateException success) {
596	<	}
597	<	catch (Exception ex) {
598	<	unexpectedException();
599	<	}
586	>	* acquireInterruptibly succeeds when released, else is interruptible
587	>	*/
588	>	public void testAcquireInterruptibly() throws InterruptedException {
589	>	final Mutex sync = new Mutex();
590	>	final BooleanLatch threadStarted = new BooleanLatch();
591	>	sync.acquireInterruptibly();
592	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
593	>	public void realRun() throws InterruptedException {
594	>	assertTrue(threadStarted.releaseShared(0));
595	>	sync.acquireInterruptibly();
596	>	}});
597	>
598	>	threadStarted.acquireShared(0);
599	>	waitForQueuedThread(sync, t);
600	>	t.interrupt();
601	>	awaitTermination(t);
602	>	assertTrue(sync.isHeldExclusively());
603		}
604
605		/**
606	<	* Calling signal without holding lock throws IllegalMonitorStateException
606	>	* owns is true for a condition created by sync else false
607		*/
608	<	public void testSignal_IllegalMonitor() {
609	<	final Mutex lock = new Mutex();
610	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
611	<	try {
612	<	c.signal();
613	<	shouldThrow();
432	<	}
433	<	catch (IllegalMonitorStateException success) {
434	<	}
435	<	catch (Exception ex) {
436	<	unexpectedException();
437	<	}
608	>	public void testOwns() {
609	>	final Mutex sync = new Mutex();
610	>	final ConditionObject c = sync.newCondition();
611	>	final Mutex sync2 = new Mutex();
612	>	assertTrue(sync.owns(c));
613	>	assertFalse(sync2.owns(c));
614		}
615
616		/**
617	<	* awaitNanos without a signal times out
617	>	* Calling await without holding sync throws IllegalMonitorStateException
618		*/
619	<	public void testAwaitNanos_Timeout() {
620	<	final Mutex lock = new Mutex();
621	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
622	<	try {
623	<	lock.acquireExclusiveUninterruptibly(1);
624	<	long t = c.awaitNanos(100);
625	<	assertTrue(t <= 0);
626	<	lock.releaseExclusive(1);
627	<	}
628	<	catch (Exception ex) {
629	<	unexpectedException();
619	>	public void testAwait_IMSE() {
620	>	final Mutex sync = new Mutex();
621	>	final ConditionObject c = sync.newCondition();
622	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
623	>	long startTime = System.nanoTime();
624	>	try {
625	>	await(c, awaitMethod);
626	>	shouldThrow();
627	>	} catch (IllegalMonitorStateException success) {
628	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
629	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
630		}
631		}
632
633		/**
634	<	*  timed await without a signal times out
634	>	* Calling signal without holding sync throws IllegalMonitorStateException
635		*/
636	<	public void testAwait_Timeout() {
637	<	final Mutex lock = new Mutex();
638	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
636	>	public void testSignal_IMSE() {
637	>	final Mutex sync = new Mutex();
638	>	final ConditionObject c = sync.newCondition();
639		try {
640	<	lock.acquireExclusiveUninterruptibly(1);
641	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
642	<	lock.releaseExclusive(1);
643	<	}
468	<	catch (Exception ex) {
469	<	unexpectedException();
470	<	}
640	>	c.signal();
641	>	shouldThrow();
642	>	} catch (IllegalMonitorStateException success) {}
643	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
644		}
645
646		/**
647	<	* awaitUntil without a signal times out
647	>	* Calling signalAll without holding sync throws IllegalMonitorStateException
648		*/
649	<	public void testAwaitUntil_Timeout() {
650	<	final Mutex lock = new Mutex();
651	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
649	>	public void testSignalAll_IMSE() {
650	>	final Mutex sync = new Mutex();
651	>	final ConditionObject c = sync.newCondition();
652		try {
653	<	lock.acquireExclusiveUninterruptibly(1);
654	<	java.util.Date d = new java.util.Date();
655	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
483	<	lock.releaseExclusive(1);
484	<	}
485	<	catch (Exception ex) {
486	<	unexpectedException();
487	<	}
653	>	c.signalAll();
654	>	shouldThrow();
655	>	} catch (IllegalMonitorStateException success) {}
656		}
657
658		/**
659	<	* await returns when signalled
659	>	* await/awaitNanos/awaitUntil without a signal times out
660		*/
661	<	public void testAwait() {
662	<	final Mutex lock = new Mutex();
663	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
664	<	Thread t = new Thread(new Runnable() {
665	<	public void run() {
666	<	try {
667	<	lock.acquireExclusiveUninterruptibly(1);
668	<	c.await();
669	<	lock.releaseExclusive(1);
502	<	}
503	<	catch(InterruptedException e) {
504	<	threadUnexpectedException();
505	<	}
506	<	}
507	<	});
508	<
509	<	try {
510	<	t.start();
511	<	Thread.sleep(SHORT_DELAY_MS);
512	<	lock.acquireExclusiveUninterruptibly(1);
513	<	c.signal();
514	<	lock.releaseExclusive(1);
515	<	t.join(SHORT_DELAY_MS);
516	<	assertFalse(t.isAlive());
517	<	}
518	<	catch (Exception ex) {
519	<	unexpectedException();
520	<	}
661	>	public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); }
662	>	public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); }
663	>	public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); }
664	>	public void testAwait_Timeout(AwaitMethod awaitMethod) {
665	>	final Mutex sync = new Mutex();
666	>	final ConditionObject c = sync.newCondition();
667	>	sync.acquire();
668	>	assertAwaitTimesOut(c, awaitMethod);
669	>	sync.release();
670		}
671
672	<
672	>	/**
673	>	* await/awaitNanos/awaitUntil returns when signalled
674	>	*/
675	>	public void testSignal_await()      { testSignal(AwaitMethod.await); }
676	>	public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); }
677	>	public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); }
678	>	public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); }
679	>	public void testSignal(final AwaitMethod awaitMethod) {
680	>	final Mutex sync = new Mutex();
681	>	final ConditionObject c = sync.newCondition();
682	>	final BooleanLatch acquired = new BooleanLatch();
683	>	Thread t = newStartedThread(new CheckedRunnable() {
684	>	public void realRun() throws InterruptedException {
685	>	sync.acquire();
686	>	assertTrue(acquired.releaseShared(0));
687	>	await(c, awaitMethod);
688	>	sync.release();
689	>	}});
690	>
691	>	acquired.acquireShared(0);
692	>	sync.acquire();
693	>	assertHasWaitersLocked(sync, c, t);
694	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
695	>	c.signal();
696	>	assertHasWaitersLocked(sync, c, NO_THREADS);
697	>	assertHasExclusiveQueuedThreads(sync, t);
698	>	sync.release();
699	>	awaitTermination(t);
700	>	}
701
702		/**
703	<	* hasWaiters throws NPE if null
703	>	* hasWaiters(null) throws NullPointerException
704		*/
705		public void testHasWaitersNPE() {
706	<	final Mutex lock = new Mutex();
706	>	final Mutex sync = new Mutex();
707		try {
708	<	lock.hasWaiters(null);
708	>	sync.hasWaiters(null);
709		shouldThrow();
710	<	} catch (NullPointerException success) {
534	<	} catch (Exception ex) {
535	<	unexpectedException();
536	<	}
710	>	} catch (NullPointerException success) {}
711		}
712
713		/**
714	<	* getWaitQueueLength throws NPE if null
714	>	* getWaitQueueLength(null) throws NullPointerException
715		*/
716		public void testGetWaitQueueLengthNPE() {
717	<	final Mutex lock = new Mutex();
717	>	final Mutex sync = new Mutex();
718		try {
719	<	lock.getWaitQueueLength(null);
719	>	sync.getWaitQueueLength(null);
720		shouldThrow();
721	<	} catch (NullPointerException success) {
548	<	} catch (Exception ex) {
549	<	unexpectedException();
550	<	}
721	>	} catch (NullPointerException success) {}
722		}
723
553	–
724		/**
725	<	* getWaitingThreads throws NPE if null
725	>	* getWaitingThreads(null) throws NullPointerException
726		*/
727		public void testGetWaitingThreadsNPE() {
728	<	final Mutex lock = new Mutex();
728	>	final Mutex sync = new Mutex();
729		try {
730	<	lock.getWaitingThreads(null);
730	>	sync.getWaitingThreads(null);
731		shouldThrow();
732	<	} catch (NullPointerException success) {
563	<	} catch (Exception ex) {
564	<	unexpectedException();
565	<	}
732	>	} catch (NullPointerException success) {}
733		}
734
568	–
735		/**
736	<	* hasWaiters throws IAE if not owned
736	>	* hasWaiters throws IllegalArgumentException if not owned
737		*/
738		public void testHasWaitersIAE() {
739	<	final Mutex lock = new Mutex();
740	<	final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition());
741	<	final Mutex lock2 = new Mutex();
739	>	final Mutex sync = new Mutex();
740	>	final ConditionObject c = sync.newCondition();
741	>	final Mutex sync2 = new Mutex();
742		try {
743	<	lock2.hasWaiters(c);
743	>	sync2.hasWaiters(c);
744		shouldThrow();
745	<	} catch (IllegalArgumentException success) {
746	<	} catch (Exception ex) {
581	<	unexpectedException();
582	<	}
745	>	} catch (IllegalArgumentException success) {}
746	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
747		}
748
749		/**
750	<	* hasWaiters throws IMSE if not locked
750	>	* hasWaiters throws IllegalMonitorStateException if not synced
751		*/
752		public void testHasWaitersIMSE() {
753	<	final Mutex lock = new Mutex();
754	<	final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition());
753	>	final Mutex sync = new Mutex();
754	>	final ConditionObject c = sync.newCondition();
755		try {
756	<	lock.hasWaiters(c);
756	>	sync.hasWaiters(c);
757		shouldThrow();
758	<	} catch (IllegalMonitorStateException success) {
759	<	} catch (Exception ex) {
596	<	unexpectedException();
597	<	}
758	>	} catch (IllegalMonitorStateException success) {}
759	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
760		}
761
600	–
762		/**
763	<	* getWaitQueueLength throws IAE if not owned
763	>	* getWaitQueueLength throws IllegalArgumentException if not owned
764		*/
765		public void testGetWaitQueueLengthIAE() {
766	<	final Mutex lock = new Mutex();
767	<	final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition());
768	<	final Mutex lock2 = new Mutex();
766	>	final Mutex sync = new Mutex();
767	>	final ConditionObject c = sync.newCondition();
768	>	final Mutex sync2 = new Mutex();
769		try {
770	<	lock2.getWaitQueueLength(c);
770	>	sync2.getWaitQueueLength(c);
771		shouldThrow();
772	<	} catch (IllegalArgumentException success) {
773	<	} catch (Exception ex) {
613	<	unexpectedException();
614	<	}
772	>	} catch (IllegalArgumentException success) {}
773	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
774		}
775
776		/**
777	<	* getWaitQueueLength throws IMSE if not locked
777	>	* getWaitQueueLength throws IllegalMonitorStateException if not synced
778		*/
779		public void testGetWaitQueueLengthIMSE() {
780	<	final Mutex lock = new Mutex();
781	<	final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition());
780	>	final Mutex sync = new Mutex();
781	>	final ConditionObject c = sync.newCondition();
782		try {
783	<	lock.getWaitQueueLength(c);
783	>	sync.getWaitQueueLength(c);
784		shouldThrow();
785	<	} catch (IllegalMonitorStateException success) {
786	<	} catch (Exception ex) {
628	<	unexpectedException();
629	<	}
785	>	} catch (IllegalMonitorStateException success) {}
786	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
787		}
788
632	–
789		/**
790	<	* getWaitingThreads throws IAE if not owned
790	>	* getWaitingThreads throws IllegalArgumentException if not owned
791		*/
792		public void testGetWaitingThreadsIAE() {
793	<	final Mutex lock = new Mutex();
794	<	final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition());
795	<	final Mutex lock2 = new Mutex();
793	>	final Mutex sync = new Mutex();
794	>	final ConditionObject c = sync.newCondition();
795	>	final Mutex sync2 = new Mutex();
796		try {
797	<	lock2.getWaitingThreads(c);
797	>	sync2.getWaitingThreads(c);
798		shouldThrow();
799	<	} catch (IllegalArgumentException success) {
800	<	} catch (Exception ex) {
645	<	unexpectedException();
646	<	}
799	>	} catch (IllegalArgumentException success) {}
800	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
801		}
802
803		/**
804	<	* getWaitingThreads throws IMSE if not locked
804	>	* getWaitingThreads throws IllegalMonitorStateException if not synced
805		*/
806		public void testGetWaitingThreadsIMSE() {
807	<	final Mutex lock = new Mutex();
808	<	final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition());
807	>	final Mutex sync = new Mutex();
808	>	final ConditionObject c = sync.newCondition();
809		try {
810	<	lock.getWaitingThreads(c);
810	>	sync.getWaitingThreads(c);
811		shouldThrow();
812	<	} catch (IllegalMonitorStateException success) {
813	<	} catch (Exception ex) {
660	<	unexpectedException();
661	<	}
812	>	} catch (IllegalMonitorStateException success) {}
813	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
814		}
815
664	–
665	–
816		/**
817		* hasWaiters returns true when a thread is waiting, else false
818		*/
819		public void testHasWaiters() {
820	<	final Mutex lock = new Mutex();
821	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
822	<	Thread t = new Thread(new Runnable() {
823	<	public void run() {
824	<	try {
825	<	lock.acquireExclusiveUninterruptibly(1);
826	<	threadAssertFalse(lock.hasWaiters(c));
827	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
828	<	c.await();
829	<	lock.releaseExclusive(1);
830	<	}
831	<	catch(InterruptedException e) {
832	<	threadUnexpectedException();
833	<	}
834	<	}
835	<	});
820	>	final Mutex sync = new Mutex();
821	>	final ConditionObject c = sync.newCondition();
822	>	final BooleanLatch acquired = new BooleanLatch();
823	>	Thread t = newStartedThread(new CheckedRunnable() {
824	>	public void realRun() throws InterruptedException {
825	>	sync.acquire();
826	>	assertHasWaitersLocked(sync, c, NO_THREADS);
827	>	assertFalse(sync.hasWaiters(c));
828	>	assertTrue(acquired.releaseShared(0));
829	>	c.await();
830	>	sync.release();
831	>	}});
832	>
833	>	acquired.acquireShared(0);
834	>	sync.acquire();
835	>	assertHasWaitersLocked(sync, c, t);
836	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
837	>	assertTrue(sync.hasWaiters(c));
838	>	c.signal();
839	>	assertHasWaitersLocked(sync, c, NO_THREADS);
840	>	assertHasExclusiveQueuedThreads(sync, t);
841	>	assertFalse(sync.hasWaiters(c));
842	>	sync.release();
843
844	<	try {
845	<	t.start();
689	<	Thread.sleep(SHORT_DELAY_MS);
690	<	lock.acquireExclusiveUninterruptibly(1);
691	<	assertTrue(lock.hasWaiters(c));
692	<	assertEquals(1, lock.getWaitQueueLength(c));
693	<	c.signal();
694	<	lock.releaseExclusive(1);
695	<	Thread.sleep(SHORT_DELAY_MS);
696	<	lock.acquireExclusiveUninterruptibly(1);
697	<	assertFalse(lock.hasWaiters(c));
698	<	assertEquals(0, lock.getWaitQueueLength(c));
699	<	lock.releaseExclusive(1);
700	<	t.join(SHORT_DELAY_MS);
701	<	assertFalse(t.isAlive());
702	<	}
703	<	catch (Exception ex) {
704	<	unexpectedException();
705	<	}
844	>	awaitTermination(t);
845	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
846		}
847
848		/**
849		* getWaitQueueLength returns number of waiting threads
850		*/
851		public void testGetWaitQueueLength() {
852	<	final Mutex lock = new Mutex();
853	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
854	<	Thread t1 = new Thread(new Runnable() {
855	<	public void run() {
856	<	try {
857	<	lock.acquireExclusiveUninterruptibly(1);
858	<	threadAssertFalse(lock.hasWaiters(c));
859	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
860	<	c.await();
861	<	lock.releaseExclusive(1);
862	<	}
863	<	catch(InterruptedException e) {
864	<	threadUnexpectedException();
865	<	}
866	<	}
867	<	});
868	<
869	<	Thread t2 = new Thread(new Runnable() {
870	<	public void run() {
871	<	try {
872	<	lock.acquireExclusiveUninterruptibly(1);
873	<	threadAssertTrue(lock.hasWaiters(c));
874	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
875	<	c.await();
876	<	lock.releaseExclusive(1);
877	<	}
878	<	catch(InterruptedException e) {
879	<	threadUnexpectedException();
880	<	}
881	<	}
882	<	});
883	<
884	<	try {
885	<	t1.start();
886	<	Thread.sleep(SHORT_DELAY_MS);
887	<	t2.start();
888	<	Thread.sleep(SHORT_DELAY_MS);
889	<	lock.acquireExclusiveUninterruptibly(1);
890	<	assertTrue(lock.hasWaiters(c));
891	<	assertEquals(2, lock.getWaitQueueLength(c));
892	<	c.signalAll();
893	<	lock.releaseExclusive(1);
754	<	Thread.sleep(SHORT_DELAY_MS);
755	<	lock.acquireExclusiveUninterruptibly(1);
756	<	assertFalse(lock.hasWaiters(c));
757	<	assertEquals(0, lock.getWaitQueueLength(c));
758	<	lock.releaseExclusive(1);
759	<	t1.join(SHORT_DELAY_MS);
760	<	t2.join(SHORT_DELAY_MS);
761	<	assertFalse(t1.isAlive());
762	<	assertFalse(t2.isAlive());
763	<	}
764	<	catch (Exception ex) {
765	<	unexpectedException();
766	<	}
852	>	final Mutex sync = new Mutex();
853	>	final ConditionObject c = sync.newCondition();
854	>	final BooleanLatch acquired1 = new BooleanLatch();
855	>	final BooleanLatch acquired2 = new BooleanLatch();
856	>	final Thread t1 = newStartedThread(new CheckedRunnable() {
857	>	public void realRun() throws InterruptedException {
858	>	sync.acquire();
859	>	assertHasWaitersLocked(sync, c, NO_THREADS);
860	>	assertEquals(0, sync.getWaitQueueLength(c));
861	>	assertTrue(acquired1.releaseShared(0));
862	>	c.await();
863	>	sync.release();
864	>	}});
865	>	acquired1.acquireShared(0);
866	>	sync.acquire();
867	>	assertHasWaitersLocked(sync, c, t1);
868	>	assertEquals(1, sync.getWaitQueueLength(c));
869	>	sync.release();
870	>
871	>	final Thread t2 = newStartedThread(new CheckedRunnable() {
872	>	public void realRun() throws InterruptedException {
873	>	sync.acquire();
874	>	assertHasWaitersLocked(sync, c, t1);
875	>	assertEquals(1, sync.getWaitQueueLength(c));
876	>	assertTrue(acquired2.releaseShared(0));
877	>	c.await();
878	>	sync.release();
879	>	}});
880	>	acquired2.acquireShared(0);
881	>	sync.acquire();
882	>	assertHasWaitersLocked(sync, c, t1, t2);
883	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
884	>	assertEquals(2, sync.getWaitQueueLength(c));
885	>	c.signalAll();
886	>	assertHasWaitersLocked(sync, c, NO_THREADS);
887	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
888	>	assertEquals(0, sync.getWaitQueueLength(c));
889	>	sync.release();
890	>
891	>	awaitTermination(t1);
892	>	awaitTermination(t2);
893	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
894		}
895
896		/**
897		* getWaitingThreads returns only and all waiting threads
898		*/
899		public void testGetWaitingThreads() {
900	<	final Mutex lock = new Mutex();
901	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
902	<	Thread t1 = new Thread(new Runnable() {
903	<	public void run() {
904	<	try {
905	<	lock.acquireExclusiveUninterruptibly(1);
906	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
907	<	c.await();
908	<	lock.releaseExclusive(1);
909	<	}
910	<	catch(InterruptedException e) {
911	<	threadUnexpectedException();
912	<	}
913	<	}
914	<	});
915	<
916	<	Thread t2 = new Thread(new Runnable() {
917	<	public void run() {
918	<	try {
919	<	lock.acquireExclusiveUninterruptibly(1);
920	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
921	<	c.await();
922	<	lock.releaseExclusive(1);
923	<	}
924	<	catch(InterruptedException e) {
925	<	threadUnexpectedException();
926	<	}
927	<	}
928	<	});
929	<
930	<	try {
931	<	lock.acquireExclusiveUninterruptibly(1);
932	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
933	<	lock.releaseExclusive(1);
934	<	t1.start();
935	<	Thread.sleep(SHORT_DELAY_MS);
936	<	t2.start();
937	<	Thread.sleep(SHORT_DELAY_MS);
938	<	lock.acquireExclusiveUninterruptibly(1);
939	<	assertTrue(lock.hasWaiters(c));
940	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
941	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
942	<	c.signalAll();
943	<	lock.releaseExclusive(1);
944	<	Thread.sleep(SHORT_DELAY_MS);
945	<	lock.acquireExclusiveUninterruptibly(1);
946	<	assertFalse(lock.hasWaiters(c));
947	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
948	<	lock.releaseExclusive(1);
949	<	t1.join(SHORT_DELAY_MS);
950	<	t2.join(SHORT_DELAY_MS);
951	<	assertFalse(t1.isAlive());
952	<	assertFalse(t2.isAlive());
953	<	}
954	<	catch (Exception ex) {
955	<	unexpectedException();
956	<	}
900	>	final Mutex sync = new Mutex();
901	>	final ConditionObject c = sync.newCondition();
902	>	final BooleanLatch acquired1 = new BooleanLatch();
903	>	final BooleanLatch acquired2 = new BooleanLatch();
904	>	final Thread t1 = new Thread(new CheckedRunnable() {
905	>	public void realRun() throws InterruptedException {
906	>	sync.acquire();
907	>	assertHasWaitersLocked(sync, c, NO_THREADS);
908	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
909	>	assertTrue(acquired1.releaseShared(0));
910	>	c.await();
911	>	sync.release();
912	>	}});
913	>
914	>	final Thread t2 = new Thread(new CheckedRunnable() {
915	>	public void realRun() throws InterruptedException {
916	>	sync.acquire();
917	>	assertHasWaitersLocked(sync, c, t1);
918	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
919	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
920	>	assertEquals(1, sync.getWaitingThreads(c).size());
921	>	assertTrue(acquired2.releaseShared(0));
922	>	c.await();
923	>	sync.release();
924	>	}});
925	>
926	>	sync.acquire();
927	>	assertHasWaitersLocked(sync, c, NO_THREADS);
928	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
929	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
930	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
931	>	assertEquals(0, sync.getWaitingThreads(c).size());
932	>	sync.release();
933	>
934	>	t1.start();
935	>	acquired1.acquireShared(0);
936	>	sync.acquire();
937	>	assertHasWaitersLocked(sync, c, t1);
938	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
939	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
940	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
941	>	assertEquals(1, sync.getWaitingThreads(c).size());
942	>	sync.release();
943	>
944	>	t2.start();
945	>	acquired2.acquireShared(0);
946	>	sync.acquire();
947	>	assertHasWaitersLocked(sync, c, t1, t2);
948	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
949	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
950	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
951	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
952	>	assertEquals(2, sync.getWaitingThreads(c).size());
953	>	c.signalAll();
954	>	assertHasWaitersLocked(sync, c, NO_THREADS);
955	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
956	>	assertFalse(sync.getWaitingThreads(c).contains(t1));
957	>	assertFalse(sync.getWaitingThreads(c).contains(t2));
958	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
959	>	assertEquals(0, sync.getWaitingThreads(c).size());
960	>	sync.release();
961	>
962	>	awaitTermination(t1);
963	>	awaitTermination(t2);
964	>	assertHasWaitersUnlocked(sync, c, NO_THREADS);
965		}
966
832	–
833	–
967		/**
968	<	* awaitUninterruptibly doesn't abort on interrupt
968	>	* awaitUninterruptibly is uninterruptible
969		*/
970		public void testAwaitUninterruptibly() {
971	<	final Mutex lock = new Mutex();
972	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
973	<	Thread t = new Thread(new Runnable() {
974	<	public void run() {
975	<	lock.acquireExclusiveUninterruptibly(1);
976	<	c.awaitUninterruptibly();
977	<	lock.releaseExclusive(1);
978	<	}
979	<	});
980	<
981	<	try {
982	<	t.start();
983	<	Thread.sleep(SHORT_DELAY_MS);
984	<	t.interrupt();
985	<	lock.acquireExclusiveUninterruptibly(1);
986	<	c.signal();
987	<	lock.releaseExclusive(1);
988	<	assert(t.isInterrupted());
989	<	t.join(SHORT_DELAY_MS);
990	<	assertFalse(t.isAlive());
991	<	}
992	<	catch (Exception ex) {
993	<	unexpectedException();
994	<	}
971	>	final Mutex sync = new Mutex();
972	>	final ConditionObject condition = sync.newCondition();
973	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
974	>	Thread t = newStartedThread(new CheckedRunnable() {
975	>	public void realRun() {
976	>	sync.acquire();
977	>	assertTrue(pleaseInterrupt.releaseShared(0));
978	>	condition.awaitUninterruptibly();
979	>	assertTrue(Thread.interrupted());
980	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
981	>	sync.release();
982	>	}});
983	>
984	>	pleaseInterrupt.acquireShared(0);
985	>	sync.acquire();
986	>	assertHasWaitersLocked(sync, condition, t);
987	>	sync.release();
988	>	t.interrupt();
989	>	assertHasWaitersUnlocked(sync, condition, t);
990	>	assertThreadBlocks(t, Thread.State.WAITING);
991	>	sync.acquire();
992	>	assertHasWaitersLocked(sync, condition, t);
993	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
994	>	condition.signal();
995	>	assertHasWaitersLocked(sync, condition, NO_THREADS);
996	>	assertHasExclusiveQueuedThreads(sync, t);
997	>	sync.release();
998	>	awaitTermination(t);
999		}
1000
1001		/**
1002	<	* await is interruptible
1003	<	*/
1004	<	public void testAwait_Interrupt() {
1005	<	final Mutex lock = new Mutex();
1006	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
1007	<	Thread t = new Thread(new Runnable() {
1008	<	public void run() {
1009	<	try {
1010	<	lock.acquireExclusiveUninterruptibly(1);
1011	<	c.await();
1012	<	lock.releaseExclusive(1);
1013	<	threadShouldThrow();
1014	<	}
1015	<	catch(InterruptedException success) {
1016	<	}
1017	<	}
1018	<	});
1019	<
1020	<	try {
1021	<	t.start();
885	<	Thread.sleep(SHORT_DELAY_MS);
886	<	t.interrupt();
887	<	t.join(SHORT_DELAY_MS);
888	<	assertFalse(t.isAlive());
889	<	}
890	<	catch (Exception ex) {
891	<	unexpectedException();
892	<	}
893	<	}
894	<
895	<	/**
896	<	* awaitNanos is interruptible
897	<	*/
898	<	public void testAwaitNanos_Interrupt() {
899	<	final Mutex lock = new Mutex();
900	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
901	<	Thread t = new Thread(new Runnable() {
902	<	public void run() {
903	<	try {
904	<	lock.acquireExclusiveUninterruptibly(1);
905	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
906	<	lock.releaseExclusive(1);
907	<	threadShouldThrow();
908	<	}
909	<	catch(InterruptedException success) {
910	<	}
911	<	}
912	<	});
913	<
914	<	try {
915	<	t.start();
916	<	Thread.sleep(SHORT_DELAY_MS);
917	<	t.interrupt();
918	<	t.join(SHORT_DELAY_MS);
919	<	assertFalse(t.isAlive());
920	<	}
921	<	catch (Exception ex) {
922	<	unexpectedException();
923	<	}
924	<	}
925	<
926	<	/**
927	<	* awaitUntil is interruptible
928	<	*/
929	<	public void testAwaitUntil_Interrupt() {
930	<	final Mutex lock = new Mutex();
931	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
932	<	Thread t = new Thread(new Runnable() {
933	<	public void run() {
934	<	try {
935	<	lock.acquireExclusiveUninterruptibly(1);
936	<	java.util.Date d = new java.util.Date();
937	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
938	<	lock.releaseExclusive(1);
939	<	threadShouldThrow();
940	<	}
941	<	catch(InterruptedException success) {
942	<	}
943	<	}
944	<	});
945	<
946	<	try {
947	<	t.start();
948	<	Thread.sleep(SHORT_DELAY_MS);
949	<	t.interrupt();
950	<	t.join(SHORT_DELAY_MS);
951	<	assertFalse(t.isAlive());
952	<	}
953	<	catch (Exception ex) {
954	<	unexpectedException();
955	<	}
1002	>	* await/awaitNanos/awaitUntil is interruptible
1003	>	*/
1004	>	public void testInterruptible_await()      { testInterruptible(AwaitMethod.await); }
1005	>	public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); }
1006	>	public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); }
1007	>	public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); }
1008	>	public void testInterruptible(final AwaitMethod awaitMethod) {
1009	>	final Mutex sync = new Mutex();
1010	>	final ConditionObject c = sync.newCondition();
1011	>	final BooleanLatch pleaseInterrupt = new BooleanLatch();
1012	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1013	>	public void realRun() throws InterruptedException {
1014	>	sync.acquire();
1015	>	assertTrue(pleaseInterrupt.releaseShared(0));
1016	>	await(c, awaitMethod);
1017	>	}});
1018	>
1019	>	pleaseInterrupt.acquireShared(0);
1020	>	t.interrupt();
1021	>	awaitTermination(t);
1022		}
1023
1024		/**
1025		* signalAll wakes up all threads
1026		*/
1027	<	public void testSignalAll() {
1028	<	final Mutex lock = new Mutex();
1029	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
1030	<	Thread t1 = new Thread(new Runnable() {
1031	<	public void run() {
1032	<	try {
1033	<	lock.acquireExclusiveUninterruptibly(1);
1034	<	c.await();
1035	<	lock.releaseExclusive(1);
1036	<	}
1037	<	catch(InterruptedException e) {
1038	<	threadUnexpectedException();
1039	<	}
1040	<	}
1041	<	});
1042	<
1043	<	Thread t2 = new Thread(new Runnable() {
1044	<	public void run() {
1045	<	try {
1046	<	lock.acquireExclusiveUninterruptibly(1);
1047	<	c.await();
1048	<	lock.releaseExclusive(1);
1049	<	}
1050	<	catch(InterruptedException e) {
1051	<	threadUnexpectedException();
1052	<	}
1053	<	}
1054	<	});
1055	<
1056	<	try {
1057	<	t1.start();
1058	<	t2.start();
1059	<	Thread.sleep(SHORT_DELAY_MS);
1060	<	lock.acquireExclusiveUninterruptibly(1);
1061	<	c.signalAll();
1062	<	lock.releaseExclusive(1);
997	<	t1.join(SHORT_DELAY_MS);
998	<	t2.join(SHORT_DELAY_MS);
999	<	assertFalse(t1.isAlive());
1000	<	assertFalse(t2.isAlive());
1001	<	}
1002	<	catch (Exception ex) {
1003	<	unexpectedException();
1004	<	}
1027	>	public void testSignalAll_await()      { testSignalAll(AwaitMethod.await); }
1028	>	public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); }
1029	>	public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); }
1030	>	public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); }
1031	>	public void testSignalAll(final AwaitMethod awaitMethod) {
1032	>	final Mutex sync = new Mutex();
1033	>	final ConditionObject c = sync.newCondition();
1034	>	final BooleanLatch acquired1 = new BooleanLatch();
1035	>	final BooleanLatch acquired2 = new BooleanLatch();
1036	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1037	>	public void realRun() throws InterruptedException {
1038	>	sync.acquire();
1039	>	acquired1.releaseShared(0);
1040	>	await(c, awaitMethod);
1041	>	sync.release();
1042	>	}});
1043	>
1044	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1045	>	public void realRun() throws InterruptedException {
1046	>	sync.acquire();
1047	>	acquired2.releaseShared(0);
1048	>	await(c, awaitMethod);
1049	>	sync.release();
1050	>	}});
1051	>
1052	>	acquired1.acquireShared(0);
1053	>	acquired2.acquireShared(0);
1054	>	sync.acquire();
1055	>	assertHasWaitersLocked(sync, c, t1, t2);
1056	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1057	>	c.signalAll();
1058	>	assertHasWaitersLocked(sync, c, NO_THREADS);
1059	>	assertHasExclusiveQueuedThreads(sync, t1, t2);
1060	>	sync.release();
1061	>	awaitTermination(t1);
1062	>	awaitTermination(t2);
1063		}
1064
1007	–
1065		/**
1066		* toString indicates current state
1067		*/
1068		public void testToString() {
1069	<	Mutex lock = new Mutex();
1070	<	String us = lock.toString();
1071	<	assertTrue(us.indexOf("State = 0") >= 0);
1072	<	lock.acquireExclusiveUninterruptibly(1);
1016	<	String ls = lock.toString();
1017	<	assertTrue(ls.indexOf("State = 1") >= 0);
1069	>	Mutex sync = new Mutex();
1070	>	assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED));
1071	>	sync.acquire();
1072	>	assertTrue(sync.toString().contains("State = " + Mutex.LOCKED));
1073		}
1074
1075		/**
1076	<	* A serialized AQS deserializes with current state
1076	>	* A serialized AQS deserializes with current state, but no queued threads
1077		*/
1078		public void testSerialization() {
1079	<	Mutex l = new Mutex();
1080	<	l.acquireExclusiveUninterruptibly(1);
1081	<	assertTrue(l.isLocked());
1082	<
1083	<	try {
1084	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1085	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1086	<	out.writeObject(l);
1087	<	out.close();
1088	<
1089	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1090	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1091	<	Mutex r = (Mutex) in.readObject();
1092	<	assertTrue(r.isLocked());
1093	<	} catch(Exception e){
1094	<	e.printStackTrace();
1095	<	unexpectedException();
1096	<	}
1079	>	Mutex sync = new Mutex();
1080	>	assertFalse(serialClone(sync).isHeldExclusively());
1081	>	sync.acquire();
1082	>	Thread t = newStartedThread(new InterruptedSyncRunnable(sync));
1083	>	waitForQueuedThread(sync, t);
1084	>	assertTrue(sync.isHeldExclusively());
1085	>
1086	>	Mutex clone = serialClone(sync);
1087	>	assertTrue(clone.isHeldExclusively());
1088	>	assertHasExclusiveQueuedThreads(sync, t);
1089	>	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1090	>	t.interrupt();
1091	>	awaitTermination(t);
1092	>	sync.release();
1093	>	assertFalse(sync.isHeldExclusively());
1094	>	assertTrue(clone.isHeldExclusively());
1095	>	assertHasExclusiveQueuedThreads(sync, NO_THREADS);
1096	>	assertHasExclusiveQueuedThreads(clone, NO_THREADS);
1097		}
1098
1044	–
1099		/**
1100		* tryReleaseShared setting state changes getState
1101		*/
1102		public void testGetStateWithReleaseShared() {
1103	<	final BooleanLatch l = new BooleanLatch();
1104	<	assertFalse(l.isSignalled());
1105	<	l.releaseShared(0);
1106	<	assertTrue(l.isSignalled());
1103	>	final BooleanLatch l = new BooleanLatch();
1104	>	assertFalse(l.isSignalled());
1105	>	assertTrue(l.releaseShared(0));
1106	>	assertTrue(l.isSignalled());
1107		}
1108
1109		/**
1110	<	* release and has no effect when already signalled
1110	>	* releaseShared has no effect when already signalled
1111		*/
1112		public void testReleaseShared() {
1113	<	final BooleanLatch l = new BooleanLatch();
1114	<	assertFalse(l.isSignalled());
1115	<	l.releaseShared(0);
1116	<	assertTrue(l.isSignalled());
1117	<	l.releaseShared(0);
1118	<	assertTrue(l.isSignalled());
1113	>	final BooleanLatch l = new BooleanLatch();
1114	>	assertFalse(l.isSignalled());
1115	>	assertTrue(l.releaseShared(0));
1116	>	assertTrue(l.isSignalled());
1117	>	assertTrue(l.releaseShared(0));
1118	>	assertTrue(l.isSignalled());
1119		}
1120
1121		/**
1122		* acquireSharedInterruptibly returns after release, but not before
1123		*/
1124		public void testAcquireSharedInterruptibly() {
1125	<	final BooleanLatch l = new BooleanLatch();
1125	>	final BooleanLatch l = new BooleanLatch();
1126
1127	<	Thread t = new Thread(new Runnable() {
1128	<	public void run() {
1129	<	try {
1130	<	threadAssertFalse(l.isSignalled());
1131	<	l.acquireSharedInterruptibly(0);
1132	<	threadAssertTrue(l.isSignalled());
1133	<	} catch(InterruptedException e){
1134	<	threadUnexpectedException();
1135	<	}
1136	<	}
1137	<	});
1138	<	try {
1139	<	t.start();
1140	<	assertFalse(l.isSignalled());
1141	<	Thread.sleep(SHORT_DELAY_MS);
1142	<	l.releaseShared(0);
1089	<	assertTrue(l.isSignalled());
1090	<	t.join();
1091	<	} catch (InterruptedException e){
1092	<	unexpectedException();
1093	<	}
1127	>	Thread t = newStartedThread(new CheckedRunnable() {
1128	>	public void realRun() throws InterruptedException {
1129	>	assertFalse(l.isSignalled());
1130	>	l.acquireSharedInterruptibly(0);
1131	>	assertTrue(l.isSignalled());
1132	>	l.acquireSharedInterruptibly(0);
1133	>	assertTrue(l.isSignalled());
1134	>	}});
1135	>
1136	>	waitForQueuedThread(l, t);
1137	>	assertFalse(l.isSignalled());
1138	>	assertThreadBlocks(t, Thread.State.WAITING);
1139	>	assertHasSharedQueuedThreads(l, t);
1140	>	assertTrue(l.releaseShared(0));
1141	>	assertTrue(l.isSignalled());
1142	>	awaitTermination(t);
1143		}
1095	–
1144
1145		/**
1146	<	* acquireSharedTimed returns after release
1146	>	* tryAcquireSharedNanos returns after release, but not before
1147		*/
1148	<	public void testAsquireSharedTimed() {
1149	<	final BooleanLatch l = new BooleanLatch();
1148	>	public void testTryAcquireSharedNanos() {
1149	>	final BooleanLatch l = new BooleanLatch();
1150
1151	<	Thread t = new Thread(new Runnable() {
1152	<	public void run() {
1153	<	try {
1154	<	threadAssertFalse(l.isSignalled());
1155	<	threadAssertTrue(l.acquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1156	<	threadAssertTrue(l.isSignalled());
1157	<
1158	<	} catch(InterruptedException e){
1159	<	threadUnexpectedException();
1160	<	}
1161	<	}
1162	<	});
1163	<	try {
1164	<	t.start();
1165	<	assertFalse(l.isSignalled());
1166	<	Thread.sleep(SHORT_DELAY_MS);
1119	<	l.releaseShared(0);
1120	<	assertTrue(l.isSignalled());
1121	<	t.join();
1122	<	} catch (InterruptedException e){
1123	<	unexpectedException();
1124	<	}
1151	>	Thread t = newStartedThread(new CheckedRunnable() {
1152	>	public void realRun() throws InterruptedException {
1153	>	assertFalse(l.isSignalled());
1154	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1155	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1156	>	assertTrue(l.isSignalled());
1157	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
1158	>	assertTrue(l.isSignalled());
1159	>	}});
1160	>
1161	>	waitForQueuedThread(l, t);
1162	>	assertFalse(l.isSignalled());
1163	>	assertThreadBlocks(t, Thread.State.TIMED_WAITING);
1164	>	assertTrue(l.releaseShared(0));
1165	>	assertTrue(l.isSignalled());
1166	>	awaitTermination(t);
1167		}
1168	<
1168	>
1169		/**
1170	<	* acquireSharedInterruptibly throws IE if interrupted before released
1170	>	* acquireSharedInterruptibly is interruptible
1171		*/
1172	<	public void testAcquireSharedInterruptibly_InterruptedException() {
1172	>	public void testAcquireSharedInterruptibly_Interruptible() {
1173		final BooleanLatch l = new BooleanLatch();
1174	<	Thread t = new Thread(new Runnable() {
1175	<	public void run() {
1176	<	try {
1177	<	threadAssertFalse(l.isSignalled());
1178	<	l.acquireSharedInterruptibly(0);
1179	<	threadShouldThrow();
1180	<	} catch(InterruptedException success){}
1181	<	}
1182	<	});
1183	<	t.start();
1184	<	try {
1143	<	assertFalse(l.isSignalled());
1144	<	t.interrupt();
1145	<	t.join();
1146	<	} catch (InterruptedException e){
1147	<	unexpectedException();
1148	<	}
1174	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1175	>	public void realRun() throws InterruptedException {
1176	>	assertFalse(l.isSignalled());
1177	>	l.acquireSharedInterruptibly(0);
1178	>	}});
1179	>
1180	>	waitForQueuedThread(l, t);
1181	>	assertFalse(l.isSignalled());
1182	>	t.interrupt();
1183	>	awaitTermination(t);
1184	>	assertFalse(l.isSignalled());
1185		}
1186
1187		/**
1188	<	* acquireSharedTimed throws IE if interrupted before released
1188	>	* tryAcquireSharedNanos is interruptible
1189		*/
1190	<	public void testAcquireSharedNanos_InterruptedException() {
1190	>	public void testTryAcquireSharedNanos_Interruptible() {
1191		final BooleanLatch l = new BooleanLatch();
1192	<	Thread t = new Thread(new Runnable() {
1193	<	public void run() {
1194	<	try {
1195	<	threadAssertFalse(l.isSignalled());
1196	<	l.acquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1197	<	threadShouldThrow();
1198	<	} catch(InterruptedException success){}
1199	<	}
1200	<	});
1201	<	t.start();
1202	<	try {
1203	<	Thread.sleep(SHORT_DELAY_MS);
1168	<	assertFalse(l.isSignalled());
1169	<	t.interrupt();
1170	<	t.join();
1171	<	} catch (InterruptedException e){
1172	<	unexpectedException();
1173	<	}
1192	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1193	>	public void realRun() throws InterruptedException {
1194	>	assertFalse(l.isSignalled());
1195	>	long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS);
1196	>	l.tryAcquireSharedNanos(0, nanos);
1197	>	}});
1198	>
1199	>	waitForQueuedThread(l, t);
1200	>	assertFalse(l.isSignalled());
1201	>	t.interrupt();
1202	>	awaitTermination(t);
1203	>	assertFalse(l.isSignalled());
1204		}
1205
1206		/**
1207	<	* acquireSharedTimed times out if not released before timeout
1207	>	* tryAcquireSharedNanos times out if not released before timeout
1208		*/
1209	<	public void testAcquireSharedNanos_Timeout() {
1209	>	public void testTryAcquireSharedNanos_Timeout() {
1210		final BooleanLatch l = new BooleanLatch();
1211	<	Thread t = new Thread(new Runnable() {
1212	<	public void run() {
1213	<	try {
1214	<	threadAssertFalse(l.isSignalled());
1215	<	threadAssertFalse(l.acquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1216	<	} catch(InterruptedException ie){
1217	<	threadUnexpectedException();
1218	<	}
1211	>	final BooleanLatch observedQueued = new BooleanLatch();
1212	>	Thread t = newStartedThread(new CheckedRunnable() {
1213	>	public void realRun() throws InterruptedException {
1214	>	assertFalse(l.isSignalled());
1215	>	for (long millis = timeoutMillis();
1216	>	!observedQueued.isSignalled();
1217	>	millis *= 2) {
1218	>	long nanos = MILLISECONDS.toNanos(millis);
1219	>	long startTime = System.nanoTime();
1220	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1221	>	assertTrue(millisElapsedSince(startTime) >= millis);
1222		}
1223	<	});
1224	<	t.start();
1225	<	try {
1226	<	Thread.sleep(SHORT_DELAY_MS);
1227	<	assertFalse(l.isSignalled());
1228	<	t.join();
1229	<	} catch (InterruptedException e){
1230	<	unexpectedException();
1231	<	}
1223	>	assertFalse(l.isSignalled());
1224	>	}});
1225	>
1226	>	waitForQueuedThread(l, t);
1227	>	observedQueued.releaseShared(0);
1228	>	assertFalse(l.isSignalled());
1229	>	awaitTermination(t);
1230	>	assertFalse(l.isSignalled());
1231	>	}
1232	>
1233	>	/**
1234	>	* awaitNanos/timed await with 0 wait times out immediately
1235	>	*/
1236	>	public void testAwait_Zero() throws InterruptedException {
1237	>	final Mutex sync = new Mutex();
1238	>	final ConditionObject c = sync.newCondition();
1239	>	sync.acquire();
1240	>	assertTrue(c.awaitNanos(0L) <= 0);
1241	>	assertFalse(c.await(0L, NANOSECONDS));
1242	>	sync.release();
1243	>	}
1244	>
1245	>	/**
1246	>	* awaitNanos/timed await with maximum negative wait times does not underflow
1247	>	*/
1248	>	public void testAwait_NegativeInfinity() throws InterruptedException {
1249	>	final Mutex sync = new Mutex();
1250	>	final ConditionObject c = sync.newCondition();
1251	>	sync.acquire();
1252	>	assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0);
1253	>	assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS));
1254	>	sync.release();
1255		}
1256
1201	–
1257		}

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