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root/jsr166/jsr166/src/test/tck/ReentrantLockTest.java

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.6 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.54 by jsr166, Wed Dec 31 19:05:43 2014 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.concurrent.locks.*;
11	<	import java.util.concurrent.*;
12	<	import java.util.*;
13	<	import java.io.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>
11	>	import java.util.Arrays;
12	>	import java.util.Collection;
13	>	import java.util.HashSet;
14	>	import java.util.concurrent.CountDownLatch;
15	>	import java.util.concurrent.CyclicBarrier;
16	>	import java.util.concurrent.locks.Condition;
17	>	import java.util.concurrent.locks.ReentrantLock;
18	>
19	>	import junit.framework.AssertionFailedError;
20	>	import junit.framework.Test;
21	>	import junit.framework.TestSuite;
22
23		public class ReentrantLockTest extends JSR166TestCase {
24		public static void main(String[] args) {
25	<	junit.textui.TestRunner.run (suite());
25	>	junit.textui.TestRunner.run(suite());
26		}
27		public static Test suite() {
28	<	return new TestSuite(ReentrantLockTest.class);
28	>	return new TestSuite(ReentrantLockTest.class);
29		}
30
31		/**
32		* A runnable calling lockInterruptibly
33		*/
34	<	class InterruptibleLockRunnable implements Runnable {
34	>	class InterruptibleLockRunnable extends CheckedRunnable {
35		final ReentrantLock lock;
36		InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
37	<	public void run() {
38	<	try {
30	<	lock.lockInterruptibly();
31	<	} catch(InterruptedException success){}
37	>	public void realRun() throws InterruptedException {
38	>	lock.lockInterruptibly();
39		}
40		}
41
35	–
42		/**
43		* A runnable calling lockInterruptibly that expects to be
44		* interrupted
45		*/
46	<	class InterruptedLockRunnable implements Runnable {
46	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
47		final ReentrantLock lock;
48		InterruptedLockRunnable(ReentrantLock l) { lock = l; }
49	<	public void run() {
50	<	try {
45	<	lock.lockInterruptibly();
46	<	threadShouldThrow();
47	<	} catch(InterruptedException success){}
49	>	public void realRun() throws InterruptedException {
50	>	lock.lockInterruptibly();
51		}
52		}
53
#	Line 53 | Line 56 | public class ReentrantLockTest extends J
56		*/
57		static class PublicReentrantLock extends ReentrantLock {
58		PublicReentrantLock() { super(); }
59	<	public Collection<Thread> getQueuedThreads() {
60	<	return super.getQueuedThreads();
59	>	PublicReentrantLock(boolean fair) { super(fair); }
60	>	public Thread getOwner() {
61	>	return super.getOwner();
62		}
63	<	public ConditionObject newCondition() {
64	<	return new PublicCondition(this);
63	>	public Collection<Thread> getQueuedThreads() {
64	>	return super.getQueuedThreads();
65		}
66	<
67	<	static class PublicCondition extends ReentrantLock.ConditionObject {
64	<	PublicCondition(PublicReentrantLock l) { super(l); }
65	<	public Collection<Thread> getWaitingThreads() {
66	<	return super.getWaitingThreads();
67	<	}
66	>	public Collection<Thread> getWaitingThreads(Condition c) {
67	>	return super.getWaitingThreads(c);
68		}
69	+	}
70
71	+	/**
72	+	* Releases write lock, checking that it had a hold count of 1.
73	+	*/
74	+	void releaseLock(PublicReentrantLock lock) {
75	+	assertLockedByMoi(lock);
76	+	lock.unlock();
77	+	assertFalse(lock.isHeldByCurrentThread());
78	+	assertNotLocked(lock);
79		}
80
81	<	/*
82	<	* locking an unlocked lock succeeds
81	>	/**
82	>	* Spin-waits until lock.hasQueuedThread(t) becomes true.
83		*/
84	<	public void testLock() {
85	<	ReentrantLock rl = new ReentrantLock();
86	<	rl.lock();
87	<	assertTrue(rl.isLocked());
88	<	rl.unlock();
84	>	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
85	>	long startTime = System.nanoTime();
86	>	while (!lock.hasQueuedThread(t)) {
87	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
88	>	throw new AssertionFailedError("timed out");
89	>	Thread.yield();
90	>	}
91	>	assertTrue(t.isAlive());
92	>	assertNotSame(t, lock.getOwner());
93		}
94
95	<	/*
96	<	* locking an unlocked fair lock succeeds
95	>	/**
96	>	* Checks that lock is not locked.
97		*/
98	<	public void testFairLock() {
99	<	ReentrantLock rl = new ReentrantLock(true);
100	<	rl.lock();
101	<	assertTrue(rl.isLocked());
102	<	rl.unlock();
98	>	void assertNotLocked(PublicReentrantLock lock) {
99	>	assertFalse(lock.isLocked());
100	>	assertFalse(lock.isHeldByCurrentThread());
101	>	assertNull(lock.getOwner());
102	>	assertEquals(0, lock.getHoldCount());
103		}
104
105	<	/*
106	<	* Unlocking an unlocked lock throws IllegalMonitorStateException
105	>	/**
106	>	* Checks that lock is locked by the given thread.
107		*/
108	<	public void testUnlock_IllegalMonitorStateException() {
109	<	ReentrantLock rl = new ReentrantLock();
110	<	try {
111	<	rl.unlock();
112	<	shouldThrow();
108	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
109	>	assertTrue(lock.isLocked());
110	>	assertSame(t, lock.getOwner());
111	>	assertEquals(t == Thread.currentThread(),
112	>	lock.isHeldByCurrentThread());
113	>	assertEquals(t == Thread.currentThread(),
114	>	lock.getHoldCount() > 0);
115	>	}
116
117	<	} catch(IllegalMonitorStateException success){}
117	>	/**
118	>	* Checks that lock is locked by the current thread.
119	>	*/
120	>	void assertLockedByMoi(PublicReentrantLock lock) {
121	>	assertLockedBy(lock, Thread.currentThread());
122		}
123
124	<	/*
125	<	* trylock on an unlocked lock succeeds
124	>	/**
125	>	* Checks that condition c has no waiters.
126		*/
127	<	public void testTryLock() {
128	<	ReentrantLock rl = new ReentrantLock();
109	<	assertTrue(rl.tryLock());
110	<	assertTrue(rl.isLocked());
111	<	rl.unlock();
127	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
128	>	assertHasWaiters(lock, c, new Thread[] {});
129		}
130
131	+	/**
132	+	* Checks that condition c has exactly the given waiter threads.
133	+	*/
134	+	void assertHasWaiters(PublicReentrantLock lock, Condition c,
135	+	Thread... threads) {
136	+	lock.lock();
137	+	assertEquals(threads.length > 0, lock.hasWaiters(c));
138	+	assertEquals(threads.length, lock.getWaitQueueLength(c));
139	+	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
140	+	assertEquals(threads.length, lock.getWaitingThreads(c).size());
141	+	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
142	+	new HashSet<Thread>(Arrays.asList(threads)));
143	+	lock.unlock();
144	+	}
145
146	<	/*
147	<	* getLockQueueLength reports number of waiting threads
146	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
147	>
148	>	/**
149	>	* Awaits condition using the specified AwaitMethod.
150		*/
151	<	public void testGetLockQueueLength() {
152	<	final ReentrantLock lock = new ReentrantLock();
153	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
154	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
155	<	try {
156	<	assertEquals(0, lock.getLockQueueLength());
157	<	lock.lock();
158	<	t1.start();
159	<	Thread.sleep(SHORT_DELAY_MS);
160	<	assertEquals(1, lock.getLockQueueLength());
161	<	t2.start();
162	<	Thread.sleep(SHORT_DELAY_MS);
163	<	assertEquals(2, lock.getLockQueueLength());
164	<	t1.interrupt();
165	<	Thread.sleep(SHORT_DELAY_MS);
166	<	assertEquals(1, lock.getLockQueueLength());
167	<	lock.unlock();
168	<	Thread.sleep(SHORT_DELAY_MS);
136	<	assertEquals(0, lock.getLockQueueLength());
137	<	t1.join();
138	<	t2.join();
139	<	} catch(Exception e){
140	<	unexpectedException();
151	>	void await(Condition c, AwaitMethod awaitMethod)
152	>	throws InterruptedException {
153	>	long timeoutMillis = 2 * LONG_DELAY_MS;
154	>	switch (awaitMethod) {
155	>	case await:
156	>	c.await();
157	>	break;
158	>	case awaitTimed:
159	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
160	>	break;
161	>	case awaitNanos:
162	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
163	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
164	>	assertTrue(nanosRemaining > 0);
165	>	break;
166	>	case awaitUntil:
167	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
168	>	break;
169		}
170	<	}
170	>	}
171
172	<	/*
173	<	* getQueuedThreads includes waiting threads
172	>	/**
173	>	* Constructor sets given fairness, and is in unlocked state
174	>	*/
175	>	public void testConstructor() {
176	>	PublicReentrantLock lock;
177	>
178	>	lock = new PublicReentrantLock();
179	>	assertFalse(lock.isFair());
180	>	assertNotLocked(lock);
181	>
182	>	lock = new PublicReentrantLock(true);
183	>	assertTrue(lock.isFair());
184	>	assertNotLocked(lock);
185	>
186	>	lock = new PublicReentrantLock(false);
187	>	assertFalse(lock.isFair());
188	>	assertNotLocked(lock);
189	>	}
190	>
191	>	/**
192	>	* locking an unlocked lock succeeds
193		*/
194	<	public void testGetQueuedThreads() {
195	<	final PublicReentrantLock lock = new PublicReentrantLock();
196	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
197	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
194	>	public void testLock()      { testLock(false); }
195	>	public void testLock_fair() { testLock(true); }
196	>	public void testLock(boolean fair) {
197	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
198	>	lock.lock();
199	>	assertLockedByMoi(lock);
200	>	releaseLock(lock);
201	>	}
202	>
203	>	/**
204	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
205	>	*/
206	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
207	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
208	>	public void testUnlock_IMSE(boolean fair) {
209	>	ReentrantLock lock = new ReentrantLock(fair);
210		try {
152	–	assertTrue(lock.getQueuedThreads().isEmpty());
153	–	lock.lock();
154	–	assertTrue(lock.getQueuedThreads().isEmpty());
155	–	t1.start();
156	–	Thread.sleep(SHORT_DELAY_MS);
157	–	assertTrue(lock.getQueuedThreads().contains(t1));
158	–	t2.start();
159	–	Thread.sleep(SHORT_DELAY_MS);
160	–	assertTrue(lock.getQueuedThreads().contains(t1));
161	–	assertTrue(lock.getQueuedThreads().contains(t2));
162	–	t1.interrupt();
163	–	Thread.sleep(SHORT_DELAY_MS);
164	–	assertFalse(lock.getQueuedThreads().contains(t1));
165	–	assertTrue(lock.getQueuedThreads().contains(t2));
211		lock.unlock();
212	<	Thread.sleep(SHORT_DELAY_MS);
213	<	assertTrue(lock.getQueuedThreads().isEmpty());
214	<	t1.join();
170	<	t2.join();
171	<	} catch(Exception e){
172	<	unexpectedException();
173	<	}
174	<	}
212	>	shouldThrow();
213	>	} catch (IllegalMonitorStateException success) {}
214	>	}
215
216	+	/**
217	+	* tryLock on an unlocked lock succeeds
218	+	*/
219	+	public void testTryLock()      { testTryLock(false); }
220	+	public void testTryLock_fair() { testTryLock(true); }
221	+	public void testTryLock(boolean fair) {
222	+	PublicReentrantLock lock = new PublicReentrantLock(fair);
223	+	assertTrue(lock.tryLock());
224	+	assertLockedByMoi(lock);
225	+	assertTrue(lock.tryLock());
226	+	assertLockedByMoi(lock);
227	+	lock.unlock();
228	+	releaseLock(lock);
229	+	}
230
231	<	/*
232	<	* timed trylock is interruptible.
231	>	/**
232	>	* hasQueuedThreads reports whether there are waiting threads
233		*/
234	<	public void testInterruptedException2() {
235	<	final ReentrantLock lock = new ReentrantLock();
236	<	lock.lock();
237	<	Thread t = new Thread(new Runnable() {
238	<	public void run() {
239	<	try {
240	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
241	<	threadShouldThrow();
242	<	} catch(InterruptedException success){}
243	<	}
244	<	});
245	<	try {
246	<	t.start();
247	<	t.interrupt();
248	<	} catch(Exception e){
249	<	unexpectedException();
250	<	}
234	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
235	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
236	>	public void testHasQueuedThreads(boolean fair) {
237	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
238	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
239	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
240	>	assertFalse(lock.hasQueuedThreads());
241	>	lock.lock();
242	>	assertFalse(lock.hasQueuedThreads());
243	>	t1.start();
244	>	waitForQueuedThread(lock, t1);
245	>	assertTrue(lock.hasQueuedThreads());
246	>	t2.start();
247	>	waitForQueuedThread(lock, t2);
248	>	assertTrue(lock.hasQueuedThreads());
249	>	t1.interrupt();
250	>	awaitTermination(t1);
251	>	assertTrue(lock.hasQueuedThreads());
252	>	lock.unlock();
253	>	awaitTermination(t2);
254	>	assertFalse(lock.hasQueuedThreads());
255		}
256
257	+	/**
258	+	* getQueueLength reports number of waiting threads
259	+	*/
260	+	public void testGetQueueLength()      { testGetQueueLength(false); }
261	+	public void testGetQueueLength_fair() { testGetQueueLength(true); }
262	+	public void testGetQueueLength(boolean fair) {
263	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
264	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
265	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
266	+	assertEquals(0, lock.getQueueLength());
267	+	lock.lock();
268	+	t1.start();
269	+	waitForQueuedThread(lock, t1);
270	+	assertEquals(1, lock.getQueueLength());
271	+	t2.start();
272	+	waitForQueuedThread(lock, t2);
273	+	assertEquals(2, lock.getQueueLength());
274	+	t1.interrupt();
275	+	awaitTermination(t1);
276	+	assertEquals(1, lock.getQueueLength());
277	+	lock.unlock();
278	+	awaitTermination(t2);
279	+	assertEquals(0, lock.getQueueLength());
280	+	}
281
282		/**
283	<	* Trylock on a locked lock fails
284	<	*/
285	<	public void testTryLockWhenLocked() {
286	<	final ReentrantLock lock = new ReentrantLock();
287	<	lock.lock();
288	<	Thread t = new Thread(new Runnable() {
207	<	public void run() {
208	<	threadAssertFalse(lock.tryLock());
209	<	}
210	<	});
283	>	* hasQueuedThread(null) throws NPE
284	>	*/
285	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
286	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
287	>	public void testHasQueuedThreadNPE(boolean fair) {
288	>	final ReentrantLock lock = new ReentrantLock(fair);
289		try {
290	<	t.start();
291	<	t.join();
292	<	lock.unlock();
293	<	} catch(Exception e){
216	<	unexpectedException();
217	<	}
218	<	}
290	>	lock.hasQueuedThread(null);
291	>	shouldThrow();
292	>	} catch (NullPointerException success) {}
293	>	}
294
295		/**
296	<	* Timed trylock on a locked lock times out
296	>	* hasQueuedThread reports whether a thread is queued
297		*/
298	<	public void testTryLock_Timeout() {
299	<	final ReentrantLock lock = new ReentrantLock();
300	<	lock.lock();
301	<	Thread t = new Thread(new Runnable() {
302	<	public void run() {
303	<	try {
304	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
305	<	} catch (Exception ex) {
306	<	threadUnexpectedException();
307	<	}
308	<	}
309	<	});
310	<	try {
311	<	t.start();
312	<	t.join();
313	<	lock.unlock();
314	<	} catch(Exception e){
315	<	unexpectedException();
316	<	}
317	<	}
318	<
298	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
299	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
300	>	public void testHasQueuedThread(boolean fair) {
301	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
302	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
303	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
304	>	assertFalse(lock.hasQueuedThread(t1));
305	>	assertFalse(lock.hasQueuedThread(t2));
306	>	lock.lock();
307	>	t1.start();
308	>	waitForQueuedThread(lock, t1);
309	>	assertTrue(lock.hasQueuedThread(t1));
310	>	assertFalse(lock.hasQueuedThread(t2));
311	>	t2.start();
312	>	waitForQueuedThread(lock, t2);
313	>	assertTrue(lock.hasQueuedThread(t1));
314	>	assertTrue(lock.hasQueuedThread(t2));
315	>	t1.interrupt();
316	>	awaitTermination(t1);
317	>	assertFalse(lock.hasQueuedThread(t1));
318	>	assertTrue(lock.hasQueuedThread(t2));
319	>	lock.unlock();
320	>	awaitTermination(t2);
321	>	assertFalse(lock.hasQueuedThread(t1));
322	>	assertFalse(lock.hasQueuedThread(t2));
323	>	}
324	>
325		/**
326	<	* getHoldCount returns number of recursive holds
326	>	* getQueuedThreads includes waiting threads
327		*/
328	<	public void testGetHoldCount() {
329	<	ReentrantLock lock = new ReentrantLock();
330	<	for(int i = 1; i <= SIZE; i++) {
331	<	lock.lock();
332	<	assertEquals(i,lock.getHoldCount());
333	<	}
334	<	for(int i = SIZE; i > 0; i--) {
335	<	lock.unlock();
336	<	assertEquals(i-1,lock.getHoldCount());
337	<	}
328	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
329	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
330	>	public void testGetQueuedThreads(boolean fair) {
331	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
332	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
333	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
334	>	assertTrue(lock.getQueuedThreads().isEmpty());
335	>	lock.lock();
336	>	assertTrue(lock.getQueuedThreads().isEmpty());
337	>	t1.start();
338	>	waitForQueuedThread(lock, t1);
339	>	assertEquals(1, lock.getQueuedThreads().size());
340	>	assertTrue(lock.getQueuedThreads().contains(t1));
341	>	t2.start();
342	>	waitForQueuedThread(lock, t2);
343	>	assertEquals(2, lock.getQueuedThreads().size());
344	>	assertTrue(lock.getQueuedThreads().contains(t1));
345	>	assertTrue(lock.getQueuedThreads().contains(t2));
346	>	t1.interrupt();
347	>	awaitTermination(t1);
348	>	assertFalse(lock.getQueuedThreads().contains(t1));
349	>	assertTrue(lock.getQueuedThreads().contains(t2));
350	>	assertEquals(1, lock.getQueuedThreads().size());
351	>	lock.unlock();
352	>	awaitTermination(t2);
353	>	assertTrue(lock.getQueuedThreads().isEmpty());
354	>	}
355	>
356	>	/**
357	>	* timed tryLock is interruptible
358	>	*/
359	>	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
360	>	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
361	>	public void testTryLock_Interruptible(boolean fair) {
362	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
363	>	lock.lock();
364	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
365	>	public void realRun() throws InterruptedException {
366	>	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
367	>	}});
368	>
369	>	waitForQueuedThread(lock, t);
370	>	t.interrupt();
371	>	awaitTermination(t);
372	>	releaseLock(lock);
373	>	}
374	>
375	>	/**
376	>	* tryLock on a locked lock fails
377	>	*/
378	>	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
379	>	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
380	>	public void testTryLockWhenLocked(boolean fair) {
381	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
382	>	lock.lock();
383	>	Thread t = newStartedThread(new CheckedRunnable() {
384	>	public void realRun() {
385	>	assertFalse(lock.tryLock());
386	>	}});
387	>
388	>	awaitTermination(t);
389	>	releaseLock(lock);
390	>	}
391	>
392	>	/**
393	>	* Timed tryLock on a locked lock times out
394	>	*/
395	>	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
396	>	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
397	>	public void testTryLock_Timeout(boolean fair) {
398	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
399	>	lock.lock();
400	>	Thread t = newStartedThread(new CheckedRunnable() {
401	>	public void realRun() throws InterruptedException {
402	>	long startTime = System.nanoTime();
403	>	long timeoutMillis = 10;
404	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
405	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
406	>	}});
407	>
408	>	awaitTermination(t);
409	>	releaseLock(lock);
410		}
411	<
259	<
411	>
412		/**
413	<	* isLocked is true when locked and false when not
413	>	* getHoldCount returns number of recursive holds
414		*/
415	<	public void testIsLocked() {
416	<	final ReentrantLock lock = new ReentrantLock();
417	<	lock.lock();
418	<	assertTrue(lock.isLocked());
419	<	lock.unlock();
420	<	assertFalse(lock.isLocked());
421	<	Thread t = new Thread(new Runnable() {
422	<	public void run() {
423	<	lock.lock();
424	<	try {
425	<	Thread.sleep(SMALL_DELAY_MS);
274	<	}
275	<	catch(Exception e) {
276	<	threadUnexpectedException();
277	<	}
278	<	lock.unlock();
279	<	}
280	<	});
281	<	try {
282	<	t.start();
283	<	Thread.sleep(SHORT_DELAY_MS);
284	<	assertTrue(lock.isLocked());
285	<	t.join();
286	<	assertFalse(lock.isLocked());
287	<	} catch(Exception e){
288	<	unexpectedException();
415	>	public void testGetHoldCount()      { testGetHoldCount(false); }
416	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
417	>	public void testGetHoldCount(boolean fair) {
418	>	ReentrantLock lock = new ReentrantLock(fair);
419	>	for (int i = 1; i <= SIZE; i++) {
420	>	lock.lock();
421	>	assertEquals(i, lock.getHoldCount());
422	>	}
423	>	for (int i = SIZE; i > 0; i--) {
424	>	lock.unlock();
425	>	assertEquals(i-1, lock.getHoldCount());
426		}
427		}
428
429	<
430	<	/*
294	<	* lockInterruptibly is interruptible.
429	>	/**
430	>	* isLocked is true when locked and false when not
431		*/
432	<	public void testLockInterruptibly1() {
433	<	final ReentrantLock lock = new ReentrantLock();
434	<	lock.lock();
299	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
432	>	public void testIsLocked()      { testIsLocked(false); }
433	>	public void testIsLocked_fair() { testIsLocked(true); }
434	>	public void testIsLocked(boolean fair) {
435		try {
436	<	t.start();
437	<	t.interrupt();
436	>	final ReentrantLock lock = new ReentrantLock(fair);
437	>	assertFalse(lock.isLocked());
438	>	lock.lock();
439	>	assertTrue(lock.isLocked());
440	>	lock.lock();
441	>	assertTrue(lock.isLocked());
442	>	lock.unlock();
443	>	assertTrue(lock.isLocked());
444		lock.unlock();
445	<	t.join();
446	<	} catch(Exception e){
447	<	unexpectedException();
445	>	assertFalse(lock.isLocked());
446	>	final CyclicBarrier barrier = new CyclicBarrier(2);
447	>	Thread t = newStartedThread(new CheckedRunnable() {
448	>	public void realRun() throws Exception {
449	>	lock.lock();
450	>	assertTrue(lock.isLocked());
451	>	barrier.await();
452	>	barrier.await();
453	>	lock.unlock();
454	>	}});
455	>
456	>	barrier.await();
457	>	assertTrue(lock.isLocked());
458	>	barrier.await();
459	>	awaitTermination(t);
460	>	assertFalse(lock.isLocked());
461	>	} catch (Exception e) {
462	>	threadUnexpectedException(e);
463		}
464	<	}
464	>	}
465
466		/**
467		* lockInterruptibly succeeds when unlocked, else is interruptible
468		*/
469	<	public void testLockInterruptibly2() {
470	<	final ReentrantLock lock = new ReentrantLock();
471	<	try {
472	<	lock.lockInterruptibly();
317	<	} catch(Exception e) {
318	<	unexpectedException();
319	<	}
320	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
469	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
470	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
471	>	public void testLockInterruptibly(boolean fair) {
472	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
473		try {
474	<	t.start();
475	<	t.interrupt();
476	<	assertTrue(lock.isLocked());
325	<	assertTrue(lock.isHeldByCurrentThread());
326	<	t.join();
327	<	} catch(Exception e){
328	<	unexpectedException();
474	>	lock.lockInterruptibly();
475	>	} catch (InterruptedException ie) {
476	>	threadUnexpectedException(ie);
477		}
478	+	assertLockedByMoi(lock);
479	+	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
480	+	waitForQueuedThread(lock, t);
481	+	t.interrupt();
482	+	assertTrue(lock.isLocked());
483	+	assertTrue(lock.isHeldByCurrentThread());
484	+	awaitTermination(t);
485	+	releaseLock(lock);
486		}
487
488		/**
489		* Calling await without holding lock throws IllegalMonitorStateException
490		*/
491	<	public void testAwait_IllegalMonitor() {
492	<	final ReentrantLock lock = new ReentrantLock();
491	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
492	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
493	>	public void testAwait_IMSE(boolean fair) {
494	>	final ReentrantLock lock = new ReentrantLock(fair);
495		final Condition c = lock.newCondition();
496	<	try {
497	<	c.await();
498	<	shouldThrow();
499	<	}
500	<	catch (IllegalMonitorStateException success) {
501	<	}
502	<	catch (Exception ex) {
503	<	unexpectedException();
496	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
497	>	long startTime = System.nanoTime();
498	>	try {
499	>	await(c, awaitMethod);
500	>	shouldThrow();
501	>	} catch (IllegalMonitorStateException success) {
502	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
503	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
504		}
505		}
506
507		/**
508		* Calling signal without holding lock throws IllegalMonitorStateException
509		*/
510	<	public void testSignal_IllegalMonitor() {
511	<	final ReentrantLock lock = new ReentrantLock();
510	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
511	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
512	>	public void testSignal_IMSE(boolean fair) {
513	>	final ReentrantLock lock = new ReentrantLock(fair);
514		final Condition c = lock.newCondition();
515		try {
516		c.signal();
517		shouldThrow();
518	<	}
359	<	catch (IllegalMonitorStateException success) {
360	<	}
361	<	catch (Exception ex) {
362	<	unexpectedException();
363	<	}
518	>	} catch (IllegalMonitorStateException success) {}
519		}
520
521		/**
522		* awaitNanos without a signal times out
523		*/
524	<	public void testAwaitNanos_Timeout() {
525	<	final ReentrantLock lock = new ReentrantLock();
526	<	final Condition c = lock.newCondition();
524	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
525	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
526	>	public void testAwaitNanos_Timeout(boolean fair) {
527		try {
528	+	final ReentrantLock lock = new ReentrantLock(fair);
529	+	final Condition c = lock.newCondition();
530		lock.lock();
531	<	long t = c.awaitNanos(100);
532	<	assertTrue(t <= 0);
531	>	long startTime = System.nanoTime();
532	>	long timeoutMillis = 10;
533	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
534	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
535	>	assertTrue(nanosRemaining <= 0);
536	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
537		lock.unlock();
538	<	}
539	<	catch (Exception ex) {
379	<	unexpectedException();
538	>	} catch (InterruptedException e) {
539	>	threadUnexpectedException(e);
540		}
541		}
542
543		/**
544	<	*  timed await without a signal times out
544	>	* timed await without a signal times out
545		*/
546	<	public void testAwait_Timeout() {
547	<	final ReentrantLock lock = new ReentrantLock();
548	<	final Condition c = lock.newCondition();
546	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
547	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
548	>	public void testAwait_Timeout(boolean fair) {
549		try {
550	+	final ReentrantLock lock = new ReentrantLock(fair);
551	+	final Condition c = lock.newCondition();
552		lock.lock();
553	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
553	>	long startTime = System.nanoTime();
554	>	long timeoutMillis = 10;
555	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
556	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
557		lock.unlock();
558	<	}
559	<	catch (Exception ex) {
395	<	unexpectedException();
558	>	} catch (InterruptedException e) {
559	>	threadUnexpectedException(e);
560		}
561		}
562
563		/**
564		* awaitUntil without a signal times out
565		*/
566	<	public void testAwaitUntil_Timeout() {
567	<	final ReentrantLock lock = new ReentrantLock();
568	<	final Condition c = lock.newCondition();
566	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
567	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
568	>	public void testAwaitUntil_Timeout(boolean fair) {
569		try {
570	+	final ReentrantLock lock = new ReentrantLock(fair);
571	+	final Condition c = lock.newCondition();
572		lock.lock();
573	+	long startTime = System.nanoTime();
574	+	long timeoutMillis = 10;
575		java.util.Date d = new java.util.Date();
576	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
576	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
577	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
578		lock.unlock();
579	<	}
580	<	catch (Exception ex) {
412	<	unexpectedException();
579	>	} catch (InterruptedException e) {
580	>	threadUnexpectedException(e);
581		}
582		}
583
584		/**
585		* await returns when signalled
586		*/
587	<	public void testAwait() {
588	<	final ReentrantLock lock = new ReentrantLock();
589	<	final ReentrantLock.ConditionObject c = lock.newCondition();
590	<	Thread t = new Thread(new Runnable() {
591	<	public void run() {
592	<	try {
593	<	lock.lock();
594	<	c.await();
595	<	lock.unlock();
596	<	}
597	<	catch(InterruptedException e) {
598	<	threadUnexpectedException();
599	<	}
600	<	}
601	<	});
587	>	public void testAwait()      { testAwait(false); }
588	>	public void testAwait_fair() { testAwait(true); }
589	>	public void testAwait(boolean fair) {
590	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
591	>	final Condition c = lock.newCondition();
592	>	final CountDownLatch locked = new CountDownLatch(1);
593	>	Thread t = newStartedThread(new CheckedRunnable() {
594	>	public void realRun() throws InterruptedException {
595	>	lock.lock();
596	>	locked.countDown();
597	>	c.await();
598	>	lock.unlock();
599	>	}});
600	>
601	>	await(locked);
602	>	lock.lock();
603	>	assertHasWaiters(lock, c, t);
604	>	c.signal();
605	>	assertHasNoWaiters(lock, c);
606	>	assertTrue(t.isAlive());
607	>	lock.unlock();
608	>	awaitTermination(t);
609	>	}
610
611	+	/**
612	+	* hasWaiters throws NPE if null
613	+	*/
614	+	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
615	+	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
616	+	public void testHasWaitersNPE(boolean fair) {
617	+	final ReentrantLock lock = new ReentrantLock(fair);
618		try {
619	<	t.start();
620	<	Thread.sleep(SHORT_DELAY_MS);
621	<	lock.lock();
439	<	c.signal();
440	<	lock.unlock();
441	<	t.join(SHORT_DELAY_MS);
442	<	assertFalse(t.isAlive());
443	<	}
444	<	catch (Exception ex) {
445	<	unexpectedException();
446	<	}
619	>	lock.hasWaiters(null);
620	>	shouldThrow();
621	>	} catch (NullPointerException success) {}
622		}
623
624		/**
625	<	* hasWaiters returns true when a thread is waiting, else false
625	>	* getWaitQueueLength throws NPE if null
626		*/
627	<	public void testHasWaiters() {
628	<	final ReentrantLock lock = new ReentrantLock();
629	<	final ReentrantLock.ConditionObject c = lock.newCondition();
630	<	Thread t = new Thread(new Runnable() {
456	<	public void run() {
457	<	try {
458	<	lock.lock();
459	<	threadAssertFalse(c.hasWaiters());
460	<	threadAssertEquals(0, c.getWaitQueueLength());
461	<	c.await();
462	<	lock.unlock();
463	<	}
464	<	catch(InterruptedException e) {
465	<	threadUnexpectedException();
466	<	}
467	<	}
468	<	});
469	<
627	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
628	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
629	>	public void testGetWaitQueueLengthNPE(boolean fair) {
630	>	final ReentrantLock lock = new ReentrantLock(fair);
631		try {
632	<	t.start();
633	<	Thread.sleep(SHORT_DELAY_MS);
634	<	lock.lock();
474	<	assertTrue(c.hasWaiters());
475	<	assertEquals(1, c.getWaitQueueLength());
476	<	c.signal();
477	<	lock.unlock();
478	<	Thread.sleep(SHORT_DELAY_MS);
479	<	lock.lock();
480	<	assertFalse(c.hasWaiters());
481	<	assertEquals(0, c.getWaitQueueLength());
482	<	lock.unlock();
483	<	t.join(SHORT_DELAY_MS);
484	<	assertFalse(t.isAlive());
485	<	}
486	<	catch (Exception ex) {
487	<	unexpectedException();
488	<	}
632	>	lock.getWaitQueueLength(null);
633	>	shouldThrow();
634	>	} catch (NullPointerException success) {}
635		}
636
637		/**
638	<	* getWaitQueueLength returns number of waiting threads
638	>	* getWaitingThreads throws NPE if null
639		*/
640	<	public void testGetWaitQueueLength() {
641	<	final ReentrantLock lock = new ReentrantLock();
642	<	final ReentrantLock.ConditionObject c = lock.newCondition();
643	<	Thread t1 = new Thread(new Runnable() {
498	<	public void run() {
499	<	try {
500	<	lock.lock();
501	<	threadAssertFalse(c.hasWaiters());
502	<	threadAssertEquals(0, c.getWaitQueueLength());
503	<	c.await();
504	<	lock.unlock();
505	<	}
506	<	catch(InterruptedException e) {
507	<	threadUnexpectedException();
508	<	}
509	<	}
510	<	});
511	<
512	<	Thread t2 = new Thread(new Runnable() {
513	<	public void run() {
514	<	try {
515	<	lock.lock();
516	<	threadAssertTrue(c.hasWaiters());
517	<	threadAssertEquals(1, c.getWaitQueueLength());
518	<	c.await();
519	<	lock.unlock();
520	<	}
521	<	catch(InterruptedException e) {
522	<	threadUnexpectedException();
523	<	}
524	<	}
525	<	});
526	<
640	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
641	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
642	>	public void testGetWaitingThreadsNPE(boolean fair) {
643	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
644		try {
645	<	t1.start();
646	<	Thread.sleep(SHORT_DELAY_MS);
647	<	t2.start();
531	<	Thread.sleep(SHORT_DELAY_MS);
532	<	lock.lock();
533	<	assertTrue(c.hasWaiters());
534	<	assertEquals(2, c.getWaitQueueLength());
535	<	c.signalAll();
536	<	lock.unlock();
537	<	Thread.sleep(SHORT_DELAY_MS);
538	<	lock.lock();
539	<	assertFalse(c.hasWaiters());
540	<	assertEquals(0, c.getWaitQueueLength());
541	<	lock.unlock();
542	<	t1.join(SHORT_DELAY_MS);
543	<	t2.join(SHORT_DELAY_MS);
544	<	assertFalse(t1.isAlive());
545	<	assertFalse(t2.isAlive());
546	<	}
547	<	catch (Exception ex) {
548	<	unexpectedException();
549	<	}
645	>	lock.getWaitingThreads(null);
646	>	shouldThrow();
647	>	} catch (NullPointerException success) {}
648		}
649
650		/**
651	<	* getWaitingThreads returns only and all waiting threads
651	>	* hasWaiters throws IllegalArgumentException if not owned
652		*/
653	<	public void testGetWaitingThreads() {
654	<	final PublicReentrantLock lock = new PublicReentrantLock();
655	<	final PublicReentrantLock.PublicCondition c = (PublicReentrantLock.PublicCondition)lock.newCondition();
656	<	Thread t1 = new Thread(new Runnable() {
657	<	public void run() {
658	<	try {
659	<	lock.lock();
660	<	threadAssertTrue(c.getWaitingThreads().isEmpty());
661	<	c.await();
662	<	lock.unlock();
663	<	}
566	<	catch(InterruptedException e) {
567	<	threadUnexpectedException();
568	<	}
569	<	}
570	<	});
571	<
572	<	Thread t2 = new Thread(new Runnable() {
573	<	public void run() {
574	<	try {
575	<	lock.lock();
576	<	threadAssertFalse(c.getWaitingThreads().isEmpty());
577	<	c.await();
578	<	lock.unlock();
579	<	}
580	<	catch(InterruptedException e) {
581	<	threadUnexpectedException();
582	<	}
583	<	}
584	<	});
653	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
654	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
655	>	public void testHasWaitersIAE(boolean fair) {
656	>	final ReentrantLock lock = new ReentrantLock(fair);
657	>	final Condition c = lock.newCondition();
658	>	final ReentrantLock lock2 = new ReentrantLock(fair);
659	>	try {
660	>	lock2.hasWaiters(c);
661	>	shouldThrow();
662	>	} catch (IllegalArgumentException success) {}
663	>	}
664
665	+	/**
666	+	* hasWaiters throws IllegalMonitorStateException if not locked
667	+	*/
668	+	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
669	+	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
670	+	public void testHasWaitersIMSE(boolean fair) {
671	+	final ReentrantLock lock = new ReentrantLock(fair);
672	+	final Condition c = lock.newCondition();
673		try {
674	<	lock.lock();
675	<	assertTrue(c.getWaitingThreads().isEmpty());
676	<	lock.unlock();
590	<	t1.start();
591	<	Thread.sleep(SHORT_DELAY_MS);
592	<	t2.start();
593	<	Thread.sleep(SHORT_DELAY_MS);
594	<	lock.lock();
595	<	assertTrue(c.hasWaiters());
596	<	assertTrue(c.getWaitingThreads().contains(t1));
597	<	assertTrue(c.getWaitingThreads().contains(t2));
598	<	c.signalAll();
599	<	lock.unlock();
600	<	Thread.sleep(SHORT_DELAY_MS);
601	<	lock.lock();
602	<	assertFalse(c.hasWaiters());
603	<	assertTrue(c.getWaitingThreads().isEmpty());
604	<	lock.unlock();
605	<	t1.join(SHORT_DELAY_MS);
606	<	t2.join(SHORT_DELAY_MS);
607	<	assertFalse(t1.isAlive());
608	<	assertFalse(t2.isAlive());
609	<	}
610	<	catch (Exception ex) {
611	<	unexpectedException();
612	<	}
674	>	lock.hasWaiters(c);
675	>	shouldThrow();
676	>	} catch (IllegalMonitorStateException success) {}
677		}
678
679		/**
680	<	* awaitUninterruptibly doesn't abort on interrupt
680	>	* getWaitQueueLength throws IllegalArgumentException if not owned
681		*/
682	<	public void testAwaitUninterruptibly() {
683	<	final ReentrantLock lock = new ReentrantLock();
682	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
683	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
684	>	public void testGetWaitQueueLengthIAE(boolean fair) {
685	>	final ReentrantLock lock = new ReentrantLock(fair);
686		final Condition c = lock.newCondition();
687	<	Thread t = new Thread(new Runnable() {
688	<	public void run() {
689	<	lock.lock();
690	<	c.awaitUninterruptibly();
691	<	lock.unlock();
692	<	}
627	<	});
687	>	final ReentrantLock lock2 = new ReentrantLock(fair);
688	>	try {
689	>	lock2.getWaitQueueLength(c);
690	>	shouldThrow();
691	>	} catch (IllegalArgumentException success) {}
692	>	}
693
694	+	/**
695	+	* getWaitQueueLength throws IllegalMonitorStateException if not locked
696	+	*/
697	+	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
698	+	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
699	+	public void testGetWaitQueueLengthIMSE(boolean fair) {
700	+	final ReentrantLock lock = new ReentrantLock(fair);
701	+	final Condition c = lock.newCondition();
702		try {
703	<	t.start();
704	<	Thread.sleep(SHORT_DELAY_MS);
705	<	t.interrupt();
633	<	lock.lock();
634	<	c.signal();
635	<	lock.unlock();
636	<	assert(t.isInterrupted());
637	<	t.join(SHORT_DELAY_MS);
638	<	assertFalse(t.isAlive());
639	<	}
640	<	catch (Exception ex) {
641	<	unexpectedException();
642	<	}
703	>	lock.getWaitQueueLength(c);
704	>	shouldThrow();
705	>	} catch (IllegalMonitorStateException success) {}
706		}
707
708		/**
709	<	* await is interruptible
709	>	* getWaitingThreads throws IllegalArgumentException if not owned
710		*/
711	<	public void testAwait_Interrupt() {
712	<	final ReentrantLock lock = new ReentrantLock();
711	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
712	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
713	>	public void testGetWaitingThreadsIAE(boolean fair) {
714	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
715		final Condition c = lock.newCondition();
716	<	Thread t = new Thread(new Runnable() {
717	<	public void run() {
718	<	try {
719	<	lock.lock();
720	<	c.await();
721	<	lock.unlock();
657	<	threadShouldThrow();
658	<	}
659	<	catch(InterruptedException success) {
660	<	}
661	<	}
662	<	});
716	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
717	>	try {
718	>	lock2.getWaitingThreads(c);
719	>	shouldThrow();
720	>	} catch (IllegalArgumentException success) {}
721	>	}
722
723	+	/**
724	+	* getWaitingThreads throws IllegalMonitorStateException if not locked
725	+	*/
726	+	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
727	+	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
728	+	public void testGetWaitingThreadsIMSE(boolean fair) {
729	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
730	+	final Condition c = lock.newCondition();
731		try {
732	<	t.start();
733	<	Thread.sleep(SHORT_DELAY_MS);
734	<	t.interrupt();
668	<	t.join(SHORT_DELAY_MS);
669	<	assertFalse(t.isAlive());
670	<	}
671	<	catch (Exception ex) {
672	<	unexpectedException();
673	<	}
732	>	lock.getWaitingThreads(c);
733	>	shouldThrow();
734	>	} catch (IllegalMonitorStateException success) {}
735		}
736
737		/**
738	<	* awaitNanos is interruptible
738	>	* hasWaiters returns true when a thread is waiting, else false
739		*/
740	<	public void testAwaitNanos_Interrupt() {
741	<	final ReentrantLock lock = new ReentrantLock();
740	>	public void testHasWaiters()      { testHasWaiters(false); }
741	>	public void testHasWaiters_fair() { testHasWaiters(true); }
742	>	public void testHasWaiters(boolean fair) {
743	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
744		final Condition c = lock.newCondition();
745	<	Thread t = new Thread(new Runnable() {
746	<	public void run() {
747	<	try {
748	<	lock.lock();
749	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
750	<	lock.unlock();
751	<	threadShouldThrow();
752	<	}
753	<	catch(InterruptedException success) {
754	<	}
755	<	}
756	<	});
745	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
746	>	Thread t = newStartedThread(new CheckedRunnable() {
747	>	public void realRun() throws InterruptedException {
748	>	lock.lock();
749	>	assertHasNoWaiters(lock, c);
750	>	assertFalse(lock.hasWaiters(c));
751	>	pleaseSignal.countDown();
752	>	c.await();
753	>	assertHasNoWaiters(lock, c);
754	>	assertFalse(lock.hasWaiters(c));
755	>	lock.unlock();
756	>	}});
757	>
758	>	await(pleaseSignal);
759	>	lock.lock();
760	>	assertHasWaiters(lock, c, t);
761	>	assertTrue(lock.hasWaiters(c));
762	>	c.signal();
763	>	assertHasNoWaiters(lock, c);
764	>	assertFalse(lock.hasWaiters(c));
765	>	lock.unlock();
766	>	awaitTermination(t);
767	>	assertHasNoWaiters(lock, c);
768	>	}
769
770	<	try {
771	<	t.start();
772	<	Thread.sleep(SHORT_DELAY_MS);
773	<	t.interrupt();
774	<	t.join(SHORT_DELAY_MS);
775	<	assertFalse(t.isAlive());
776	<	}
777	<	catch (Exception ex) {
778	<	unexpectedException();
779	<	}
770	>	/**
771	>	* getWaitQueueLength returns number of waiting threads
772	>	*/
773	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
774	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
775	>	public void testGetWaitQueueLength(boolean fair) {
776	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
777	>	final Condition c = lock.newCondition();
778	>	final CountDownLatch locked1 = new CountDownLatch(1);
779	>	final CountDownLatch locked2 = new CountDownLatch(1);
780	>	Thread t1 = new Thread(new CheckedRunnable() {
781	>	public void realRun() throws InterruptedException {
782	>	lock.lock();
783	>	assertFalse(lock.hasWaiters(c));
784	>	assertEquals(0, lock.getWaitQueueLength(c));
785	>	locked1.countDown();
786	>	c.await();
787	>	lock.unlock();
788	>	}});
789	>
790	>	Thread t2 = new Thread(new CheckedRunnable() {
791	>	public void realRun() throws InterruptedException {
792	>	lock.lock();
793	>	assertTrue(lock.hasWaiters(c));
794	>	assertEquals(1, lock.getWaitQueueLength(c));
795	>	locked2.countDown();
796	>	c.await();
797	>	lock.unlock();
798	>	}});
799	>
800	>	lock.lock();
801	>	assertEquals(0, lock.getWaitQueueLength(c));
802	>	lock.unlock();
803	>
804	>	t1.start();
805	>	await(locked1);
806	>
807	>	lock.lock();
808	>	assertHasWaiters(lock, c, t1);
809	>	assertEquals(1, lock.getWaitQueueLength(c));
810	>	lock.unlock();
811	>
812	>	t2.start();
813	>	await(locked2);
814	>
815	>	lock.lock();
816	>	assertHasWaiters(lock, c, t1, t2);
817	>	assertEquals(2, lock.getWaitQueueLength(c));
818	>	c.signalAll();
819	>	assertHasNoWaiters(lock, c);
820	>	lock.unlock();
821	>
822	>	awaitTermination(t1);
823	>	awaitTermination(t2);
824	>
825	>	assertHasNoWaiters(lock, c);
826		}
827
828		/**
829	<	* awaitUntil is interruptible
829	>	* getWaitingThreads returns only and all waiting threads
830		*/
831	<	public void testAwaitUntil_Interrupt() {
832	<	final ReentrantLock lock = new ReentrantLock();
831	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
832	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
833	>	public void testGetWaitingThreads(boolean fair) {
834	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
835		final Condition c = lock.newCondition();
836	<	Thread t = new Thread(new Runnable() {
837	<	public void run() {
838	<	try {
839	<	lock.lock();
840	<	java.util.Date d = new java.util.Date();
841	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
842	<	lock.unlock();
843	<	threadShouldThrow();
844	<	}
845	<	catch(InterruptedException success) {
846	<	}
847	<	}
848	<	});
849	<
850	<	try {
851	<	t.start();
852	<	Thread.sleep(SHORT_DELAY_MS);
853	<	t.interrupt();
854	<	t.join(SHORT_DELAY_MS);
855	<	assertFalse(t.isAlive());
856	<	}
857	<	catch (Exception ex) {
858	<	unexpectedException();
859	<	}
836	>	final CountDownLatch locked1 = new CountDownLatch(1);
837	>	final CountDownLatch locked2 = new CountDownLatch(1);
838	>	Thread t1 = new Thread(new CheckedRunnable() {
839	>	public void realRun() throws InterruptedException {
840	>	lock.lock();
841	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
842	>	locked1.countDown();
843	>	c.await();
844	>	lock.unlock();
845	>	}});
846	>
847	>	Thread t2 = new Thread(new CheckedRunnable() {
848	>	public void realRun() throws InterruptedException {
849	>	lock.lock();
850	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
851	>	locked2.countDown();
852	>	c.await();
853	>	lock.unlock();
854	>	}});
855	>
856	>	lock.lock();
857	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
858	>	lock.unlock();
859	>
860	>	t1.start();
861	>	await(locked1);
862	>
863	>	lock.lock();
864	>	assertHasWaiters(lock, c, t1);
865	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
866	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
867	>	assertEquals(1, lock.getWaitingThreads(c).size());
868	>	lock.unlock();
869	>
870	>	t2.start();
871	>	await(locked2);
872	>
873	>	lock.lock();
874	>	assertHasWaiters(lock, c, t1, t2);
875	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
876	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
877	>	assertEquals(2, lock.getWaitingThreads(c).size());
878	>	c.signalAll();
879	>	assertHasNoWaiters(lock, c);
880	>	lock.unlock();
881	>
882	>	awaitTermination(t1);
883	>	awaitTermination(t2);
884	>
885	>	assertHasNoWaiters(lock, c);
886	>	}
887	>
888	>	/**
889	>	* awaitUninterruptibly is uninterruptible
890	>	*/
891	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
892	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
893	>	public void testAwaitUninterruptibly(boolean fair) {
894	>	final ReentrantLock lock = new ReentrantLock(fair);
895	>	final Condition c = lock.newCondition();
896	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
897	>
898	>	Thread t1 = newStartedThread(new CheckedRunnable() {
899	>	public void realRun() {
900	>	// Interrupt before awaitUninterruptibly
901	>	lock.lock();
902	>	pleaseInterrupt.countDown();
903	>	Thread.currentThread().interrupt();
904	>	c.awaitUninterruptibly();
905	>	assertTrue(Thread.interrupted());
906	>	lock.unlock();
907	>	}});
908	>
909	>	Thread t2 = newStartedThread(new CheckedRunnable() {
910	>	public void realRun() {
911	>	// Interrupt during awaitUninterruptibly
912	>	lock.lock();
913	>	pleaseInterrupt.countDown();
914	>	c.awaitUninterruptibly();
915	>	assertTrue(Thread.interrupted());
916	>	lock.unlock();
917	>	}});
918	>
919	>	await(pleaseInterrupt);
920	>	lock.lock();
921	>	lock.unlock();
922	>	t2.interrupt();
923	>
924	>	assertThreadStaysAlive(t1);
925	>	assertTrue(t2.isAlive());
926	>
927	>	lock.lock();
928	>	c.signalAll();
929	>	lock.unlock();
930	>
931	>	awaitTermination(t1);
932	>	awaitTermination(t2);
933	>	}
934	>
935	>	/**
936	>	* await/awaitNanos/awaitUntil is interruptible
937	>	*/
938	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
939	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
940	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
941	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
942	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
943	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
944	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
945	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
946	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
947	>	final PublicReentrantLock lock =
948	>	new PublicReentrantLock(fair);
949	>	final Condition c = lock.newCondition();
950	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
951	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
952	>	public void realRun() throws InterruptedException {
953	>	lock.lock();
954	>	assertLockedByMoi(lock);
955	>	assertHasNoWaiters(lock, c);
956	>	pleaseInterrupt.countDown();
957	>	try {
958	>	await(c, awaitMethod);
959	>	} finally {
960	>	assertLockedByMoi(lock);
961	>	assertHasNoWaiters(lock, c);
962	>	lock.unlock();
963	>	assertFalse(Thread.interrupted());
964	>	}
965	>	}});
966	>
967	>	await(pleaseInterrupt);
968	>	assertHasWaiters(lock, c, t);
969	>	t.interrupt();
970	>	awaitTermination(t);
971	>	assertNotLocked(lock);
972		}
973
974		/**
975		* signalAll wakes up all threads
976		*/
977	<	public void testSignalAll() {
978	<	final ReentrantLock lock = new ReentrantLock();
977	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
978	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
979	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
980	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
981	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
982	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
983	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
984	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
985	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
986	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
987		final Condition c = lock.newCondition();
988	<	Thread t1 = new Thread(new Runnable() {
989	<	public void run() {
990	<	try {
991	<	lock.lock();
992	<	c.await();
993	<	lock.unlock();
994	<	}
995	<	catch(InterruptedException e) {
753	<	threadUnexpectedException();
754	<	}
755	<	}
756	<	});
757	<
758	<	Thread t2 = new Thread(new Runnable() {
759	<	public void run() {
760	<	try {
761	<	lock.lock();
762	<	c.await();
763	<	lock.unlock();
764	<	}
765	<	catch(InterruptedException e) {
766	<	threadUnexpectedException();
767	<	}
768	<	}
769	<	});
770	<
771	<	try {
772	<	t1.start();
773	<	t2.start();
774	<	Thread.sleep(SHORT_DELAY_MS);
775	<	lock.lock();
776	<	c.signalAll();
777	<	lock.unlock();
778	<	t1.join(SHORT_DELAY_MS);
779	<	t2.join(SHORT_DELAY_MS);
780	<	assertFalse(t1.isAlive());
781	<	assertFalse(t2.isAlive());
782	<	}
783	<	catch (Exception ex) {
784	<	unexpectedException();
988	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
989	>	class Awaiter extends CheckedRunnable {
990	>	public void realRun() throws InterruptedException {
991	>	lock.lock();
992	>	pleaseSignal.countDown();
993	>	await(c, awaitMethod);
994	>	lock.unlock();
995	>	}
996		}
997	+
998	+	Thread t1 = newStartedThread(new Awaiter());
999	+	Thread t2 = newStartedThread(new Awaiter());
1000	+
1001	+	await(pleaseSignal);
1002	+	lock.lock();
1003	+	assertHasWaiters(lock, c, t1, t2);
1004	+	c.signalAll();
1005	+	assertHasNoWaiters(lock, c);
1006	+	lock.unlock();
1007	+	awaitTermination(t1);
1008	+	awaitTermination(t2);
1009	+	}
1010	+
1011	+	/**
1012	+	* signal wakes up waiting threads in FIFO order
1013	+	*/
1014	+	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1015	+	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1016	+	public void testSignalWakesFifo(boolean fair) {
1017	+	final PublicReentrantLock lock =
1018	+	new PublicReentrantLock(fair);
1019	+	final Condition c = lock.newCondition();
1020	+	final CountDownLatch locked1 = new CountDownLatch(1);
1021	+	final CountDownLatch locked2 = new CountDownLatch(1);
1022	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1023	+	public void realRun() throws InterruptedException {
1024	+	lock.lock();
1025	+	locked1.countDown();
1026	+	c.await();
1027	+	lock.unlock();
1028	+	}});
1029	+
1030	+	await(locked1);
1031	+
1032	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1033	+	public void realRun() throws InterruptedException {
1034	+	lock.lock();
1035	+	locked2.countDown();
1036	+	c.await();
1037	+	lock.unlock();
1038	+	}});
1039	+
1040	+	await(locked2);
1041	+
1042	+	lock.lock();
1043	+	assertHasWaiters(lock, c, t1, t2);
1044	+	assertFalse(lock.hasQueuedThreads());
1045	+	c.signal();
1046	+	assertHasWaiters(lock, c, t2);
1047	+	assertTrue(lock.hasQueuedThread(t1));
1048	+	assertFalse(lock.hasQueuedThread(t2));
1049	+	c.signal();
1050	+	assertHasNoWaiters(lock, c);
1051	+	assertTrue(lock.hasQueuedThread(t1));
1052	+	assertTrue(lock.hasQueuedThread(t2));
1053	+	lock.unlock();
1054	+	awaitTermination(t1);
1055	+	awaitTermination(t2);
1056	+	}
1057	+
1058	+	/**
1059	+	* await after multiple reentrant locking preserves lock count
1060	+	*/
1061	+	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1062	+	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1063	+	public void testAwaitLockCount(boolean fair) {
1064	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1065	+	final Condition c = lock.newCondition();
1066	+	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1067	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1068	+	public void realRun() throws InterruptedException {
1069	+	lock.lock();
1070	+	assertLockedByMoi(lock);
1071	+	assertEquals(1, lock.getHoldCount());
1072	+	pleaseSignal.countDown();
1073	+	c.await();
1074	+	assertLockedByMoi(lock);
1075	+	assertEquals(1, lock.getHoldCount());
1076	+	lock.unlock();
1077	+	}});
1078	+
1079	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1080	+	public void realRun() throws InterruptedException {
1081	+	lock.lock();
1082	+	lock.lock();
1083	+	assertLockedByMoi(lock);
1084	+	assertEquals(2, lock.getHoldCount());
1085	+	pleaseSignal.countDown();
1086	+	c.await();
1087	+	assertLockedByMoi(lock);
1088	+	assertEquals(2, lock.getHoldCount());
1089	+	lock.unlock();
1090	+	lock.unlock();
1091	+	}});
1092	+
1093	+	await(pleaseSignal);
1094	+	lock.lock();
1095	+	assertHasWaiters(lock, c, t1, t2);
1096	+	assertEquals(1, lock.getHoldCount());
1097	+	c.signalAll();
1098	+	assertHasNoWaiters(lock, c);
1099	+	lock.unlock();
1100	+	awaitTermination(t1);
1101	+	awaitTermination(t2);
1102		}
1103
1104		/**
1105		* A serialized lock deserializes as unlocked
1106		*/
1107	<	public void testSerialization() {
1108	<	ReentrantLock l = new ReentrantLock();
1109	<	l.lock();
1110	<	l.unlock();
1111	<
1112	<	try {
1113	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1114	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1115	<	out.writeObject(l);
1116	<	out.close();
1117	<
1118	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1119	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1120	<	ReentrantLock r = (ReentrantLock) in.readObject();
1121	<	r.lock();
1122	<	r.unlock();
1123	<	} catch(Exception e){
1124	<	e.printStackTrace();
1125	<	unexpectedException();
1126	<	}
1107	>	public void testSerialization()      { testSerialization(false); }
1108	>	public void testSerialization_fair() { testSerialization(true); }
1109	>	public void testSerialization(boolean fair) {
1110	>	ReentrantLock lock = new ReentrantLock(fair);
1111	>	lock.lock();
1112	>
1113	>	ReentrantLock clone = serialClone(lock);
1114	>	assertEquals(lock.isFair(), clone.isFair());
1115	>	assertTrue(lock.isLocked());
1116	>	assertFalse(clone.isLocked());
1117	>	assertEquals(1, lock.getHoldCount());
1118	>	assertEquals(0, clone.getHoldCount());
1119	>	clone.lock();
1120	>	clone.lock();
1121	>	assertTrue(clone.isLocked());
1122	>	assertEquals(2, clone.getHoldCount());
1123	>	assertEquals(1, lock.getHoldCount());
1124	>	clone.unlock();
1125	>	clone.unlock();
1126	>	assertTrue(lock.isLocked());
1127	>	assertFalse(clone.isLocked());
1128		}
1129
1130	+	/**
1131	+	* toString indicates current lock state
1132	+	*/
1133	+	public void testToString()      { testToString(false); }
1134	+	public void testToString_fair() { testToString(true); }
1135	+	public void testToString(boolean fair) {
1136	+	ReentrantLock lock = new ReentrantLock(fair);
1137	+	assertTrue(lock.toString().contains("Unlocked"));
1138	+	lock.lock();
1139	+	assertTrue(lock.toString().contains("Locked"));
1140	+	lock.unlock();
1141	+	assertTrue(lock.toString().contains("Unlocked"));
1142	+	}
1143		}

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