[ViewVC] Diff of: jsr166/jsr166/src/test/tck/ReentrantReadWriteLockTest.java

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.54 by jsr166, Mon May 2 01:07:15 2011 UTC vs.
Revision 1.74 by jsr166, Sun May 24 01:42:14 2015 UTC

#	Line 6 \| Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–	import junit.framework.*;
10	–	import java.util.concurrent.locks.*;
11	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.io.*;
11	<	import java.util.*;
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.atomic.AtomicBoolean;
16	>	import java.util.concurrent.locks.Condition;
17	>	import java.util.concurrent.locks.Lock;
18	>	import java.util.concurrent.locks.ReentrantReadWriteLock;
19	>
20	>	import junit.framework.AssertionFailedError;
21	>	import junit.framework.Test;
22	>	import junit.framework.TestSuite;
23
24		public class ReentrantReadWriteLockTest extends JSR166TestCase {
25		public static void main(String[] args) {
26	<	junit.textui.TestRunner.run(suite());
26	>	main(suite(), args);
27		}
28		public static Test suite() {
29		return new TestSuite(ReentrantReadWriteLockTest.class);
#	Line 32 \| Line 40 \| public class ReentrantReadWriteLockTest
40		}
41		}
42
35	–
43		/**
44		* A runnable calling lockInterruptibly that expects to be
45		* interrupted
#	Line 50 \| Line 57 \| public class ReentrantReadWriteLockTest
57		*/
58		static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock {
59		PublicReentrantReadWriteLock() { super(); }
60	+	PublicReentrantReadWriteLock(boolean fair) { super(fair); }
61	+	public Thread getOwner() {
62	+	return super.getOwner();
63	+	}
64		public Collection<Thread> getQueuedThreads() {
65		return super.getQueuedThreads();
66		}
#	Line 61 \| Line 72 \| public class ReentrantReadWriteLockTest
72		/**
73		* Releases write lock, checking that it had a hold count of 1.
74		*/
75	<	void releaseWriteLock(ReentrantReadWriteLock lock) {
75	>	void releaseWriteLock(PublicReentrantReadWriteLock lock) {
76		ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock();
77	<	assertTrue(writeLock.isHeldByCurrentThread());
77	>	assertWriteLockedByMoi(lock);
78	>	assertEquals(1, lock.getWriteHoldCount());
79		writeLock.unlock();
80	<	assertFalse(writeLock.isHeldByCurrentThread());
80	>	assertNotWriteLocked(lock);
81		}
82
83		/**
84	<	* Constructor sets given fairness, and is in unlocked state
84	>	* Spin-waits until lock.hasQueuedThread(t) becomes true.
85		*/
86	<	public void testConstructor() {
87	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
88	<	assertFalse(rl.isFair());
89	<	assertFalse(rl.isWriteLocked());
90	<	assertEquals(0, rl.getReadLockCount());
91	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
92	<	assertTrue(r2.isFair());
93	<	assertFalse(r2.isWriteLocked());
94	<	assertEquals(0, r2.getReadLockCount());
83	<	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
84	<	assertFalse(r3.isFair());
85	<	assertFalse(r3.isWriteLocked());
86	<	assertEquals(0, r3.getReadLockCount());
86	>	void waitForQueuedThread(PublicReentrantReadWriteLock lock, Thread t) {
87	>	long startTime = System.nanoTime();
88	>	while (!lock.hasQueuedThread(t)) {
89	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
90	>	throw new AssertionFailedError("timed out");
91	>	Thread.yield();
92	>	}
93	>	assertTrue(t.isAlive());
94	>	assertNotSame(t, lock.getOwner());
95		}
96
97		/**
98	<	* write-locking and read-locking an unlocked lock succeed
98	>	* Checks that lock is not write-locked.
99		*/
100	<	public void testLock() {
101	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
102	<	rl.writeLock().lock();
103	<	assertTrue(rl.isWriteLocked());
104	<	assertTrue(rl.isWriteLockedByCurrentThread());
105	<	assertTrue(rl.writeLock().isHeldByCurrentThread());
106	<	assertEquals(0, rl.getReadLockCount());
99	<	rl.writeLock().unlock();
100	<	assertFalse(rl.isWriteLocked());
101	<	assertFalse(rl.isWriteLockedByCurrentThread());
102	<	assertFalse(rl.writeLock().isHeldByCurrentThread());
103	<	assertEquals(0, rl.getReadLockCount());
104	<	rl.readLock().lock();
105	<	assertFalse(rl.isWriteLocked());
106	<	assertFalse(rl.isWriteLockedByCurrentThread());
107	<	assertEquals(1, rl.getReadLockCount());
108	<	rl.readLock().unlock();
109	<	assertFalse(rl.isWriteLocked());
110	<	assertFalse(rl.isWriteLockedByCurrentThread());
111	<	assertEquals(0, rl.getReadLockCount());
100	>	void assertNotWriteLocked(PublicReentrantReadWriteLock lock) {
101	>	assertFalse(lock.isWriteLocked());
102	>	assertFalse(lock.isWriteLockedByCurrentThread());
103	>	assertFalse(lock.writeLock().isHeldByCurrentThread());
104	>	assertEquals(0, lock.getWriteHoldCount());
105	>	assertEquals(0, lock.writeLock().getHoldCount());
106	>	assertNull(lock.getOwner());
107		}
108
109	+	/**
110	+	* Checks that lock is write-locked by the given thread.
111	+	*/
112	+	void assertWriteLockedBy(PublicReentrantReadWriteLock lock, Thread t) {
113	+	assertTrue(lock.isWriteLocked());
114	+	assertSame(t, lock.getOwner());
115	+	assertEquals(t == Thread.currentThread(),
116	+	lock.isWriteLockedByCurrentThread());
117	+	assertEquals(t == Thread.currentThread(),
118	+	lock.writeLock().isHeldByCurrentThread());
119	+	assertEquals(t == Thread.currentThread(),
120	+	lock.getWriteHoldCount() > 0);
121	+	assertEquals(t == Thread.currentThread(),
122	+	lock.writeLock().getHoldCount() > 0);
123	+	assertEquals(0, lock.getReadLockCount());
124	+	}
125	+
126	+	/**
127	+	* Checks that lock is write-locked by the current thread.
128	+	*/
129	+	void assertWriteLockedByMoi(PublicReentrantReadWriteLock lock) {
130	+	assertWriteLockedBy(lock, Thread.currentThread());
131	+	}
132
133		/**
134	<	* locking an unlocked fair lock succeeds
135	<	*/
136	<	public void testFairLock() {
137	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
138	<	rl.writeLock().lock();
139	<	assertTrue(rl.isWriteLocked());
140	<	assertTrue(rl.isWriteLockedByCurrentThread());
141	<	assertTrue(rl.writeLock().isHeldByCurrentThread());
142	<	assertEquals(0, rl.getReadLockCount());
143	<	rl.writeLock().unlock();
144	<	assertFalse(rl.isWriteLocked());
145	<	assertFalse(rl.isWriteLockedByCurrentThread());
146	<	assertFalse(rl.writeLock().isHeldByCurrentThread());
147	<	assertEquals(0, rl.getReadLockCount());
148	<	rl.readLock().lock();
149	<	assertFalse(rl.isWriteLocked());
150	<	assertFalse(rl.isWriteLockedByCurrentThread());
151	<	assertEquals(1, rl.getReadLockCount());
152	<	rl.readLock().unlock();
153	<	assertFalse(rl.isWriteLocked());
154	<	assertFalse(rl.isWriteLockedByCurrentThread());
155	<	assertEquals(0, rl.getReadLockCount());
134	>	* Checks that condition c has no waiters.
135	>	*/
136	>	void assertHasNoWaiters(PublicReentrantReadWriteLock lock, Condition c) {
137	>	assertHasWaiters(lock, c, new Thread[] {});
138	>	}
139	>
140	>	/**
141	>	* Checks that condition c has exactly the given waiter threads.
142	>	*/
143	>	void assertHasWaiters(PublicReentrantReadWriteLock lock, Condition c,
144	>	Thread... threads) {
145	>	lock.writeLock().lock();
146	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
147	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
148	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
149	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
150	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
151	>	new HashSet<Thread>(Arrays.asList(threads)));
152	>	lock.writeLock().unlock();
153	>	}
154	>
155	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
156	>
157	>	/**
158	>	* Awaits condition using the specified AwaitMethod.
159	>	*/
160	>	void await(Condition c, AwaitMethod awaitMethod)
161	>	throws InterruptedException {
162	>	switch (awaitMethod) {
163	>	case await:
164	>	c.await();
165	>	break;
166	>	case awaitTimed:
167	>	assertTrue(c.await(2 * LONG_DELAY_MS, MILLISECONDS));
168	>	break;
169	>	case awaitNanos:
170	>	long nanosRemaining = c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
171	>	assertTrue(nanosRemaining > 0);
172	>	break;
173	>	case awaitUntil:
174	>	java.util.Date d = new java.util.Date();
175	>	assertTrue(c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS)));
176	>	break;
177	>	default:
178	>	throw new AssertionError();
179	>	}
180	>	}
181	>
182	>	/**
183	>	* Constructor sets given fairness, and is in unlocked state
184	>	*/
185	>	public void testConstructor() {
186	>	PublicReentrantReadWriteLock lock;
187	>
188	>	lock = new PublicReentrantReadWriteLock();
189	>	assertFalse(lock.isFair());
190	>	assertNotWriteLocked(lock);
191	>	assertEquals(0, lock.getReadLockCount());
192	>
193	>	lock = new PublicReentrantReadWriteLock(true);
194	>	assertTrue(lock.isFair());
195	>	assertNotWriteLocked(lock);
196	>	assertEquals(0, lock.getReadLockCount());
197	>
198	>	lock = new PublicReentrantReadWriteLock(false);
199	>	assertFalse(lock.isFair());
200	>	assertNotWriteLocked(lock);
201	>	assertEquals(0, lock.getReadLockCount());
202	>	}
203	>
204	>	/**
205	>	* write-locking and read-locking an unlocked lock succeed
206	>	*/
207	>	public void testLock() { testLock(false); }
208	>	public void testLock_fair() { testLock(true); }
209	>	public void testLock(boolean fair) {
210	>	PublicReentrantReadWriteLock lock =
211	>	new PublicReentrantReadWriteLock(fair);
212	>	assertNotWriteLocked(lock);
213	>	lock.writeLock().lock();
214	>	assertWriteLockedByMoi(lock);
215	>	lock.writeLock().unlock();
216	>	assertNotWriteLocked(lock);
217	>	assertEquals(0, lock.getReadLockCount());
218	>	lock.readLock().lock();
219	>	assertNotWriteLocked(lock);
220	>	assertEquals(1, lock.getReadLockCount());
221	>	lock.readLock().unlock();
222	>	assertNotWriteLocked(lock);
223	>	assertEquals(0, lock.getReadLockCount());
224		}
225
226		/**
227		* getWriteHoldCount returns number of recursive holds
228		*/
229	<	public void testGetWriteHoldCount() {
230	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
229	>	public void testGetWriteHoldCount() { testGetWriteHoldCount(false); }
230	>	public void testGetWriteHoldCount_fair() { testGetWriteHoldCount(true); }
231	>	public void testGetWriteHoldCount(boolean fair) {
232	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
233		for (int i = 1; i <= SIZE; i++) {
234		lock.writeLock().lock();
235		assertEquals(i,lock.getWriteHoldCount());
236		}
237		for (int i = SIZE; i > 0; i--) {
238		lock.writeLock().unlock();
239	<	assertEquals(i-1,lock.getWriteHoldCount());
239	>	assertEquals(i - 1,lock.getWriteHoldCount());
240		}
241		}
242
243		/**
244	<	* WriteLock.getHoldCount returns number of recursive holds
244	>	* writelock.getHoldCount returns number of recursive holds
245		*/
246	<	public void testGetHoldCount() {
247	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
246	>	public void testGetHoldCount() { testGetHoldCount(false); }
247	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
248	>	public void testGetHoldCount(boolean fair) {
249	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
250		for (int i = 1; i <= SIZE; i++) {
251		lock.writeLock().lock();
252		assertEquals(i,lock.writeLock().getHoldCount());
253		}
254		for (int i = SIZE; i > 0; i--) {
255		lock.writeLock().unlock();
256	<	assertEquals(i-1,lock.writeLock().getHoldCount());
256	>	assertEquals(i - 1,lock.writeLock().getHoldCount());
257		}
258		}
259
260		/**
261		* getReadHoldCount returns number of recursive holds
262		*/
263	<	public void testGetReadHoldCount() {
264	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
263	>	public void testGetReadHoldCount() { testGetReadHoldCount(false); }
264	>	public void testGetReadHoldCount_fair() { testGetReadHoldCount(true); }
265	>	public void testGetReadHoldCount(boolean fair) {
266	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
267		for (int i = 1; i <= SIZE; i++) {
268		lock.readLock().lock();
269		assertEquals(i,lock.getReadHoldCount());
270		}
271		for (int i = SIZE; i > 0; i--) {
272		lock.readLock().unlock();
273	<	assertEquals(i-1,lock.getReadHoldCount());
273	>	assertEquals(i - 1,lock.getReadHoldCount());
274		}
275		}
276
185	–
277		/**
278		* write-unlocking an unlocked lock throws IllegalMonitorStateException
279		*/
280	<	public void testUnlock_IllegalMonitorStateException() {
281	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
280	>	public void testWriteUnlock_IMSE() { testWriteUnlock_IMSE(false); }
281	>	public void testWriteUnlock_IMSE_fair() { testWriteUnlock_IMSE(true); }
282	>	public void testWriteUnlock_IMSE(boolean fair) {
283	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
284		try {
285	<	rl.writeLock().unlock();
285	>	lock.writeLock().unlock();
286		shouldThrow();
287		} catch (IllegalMonitorStateException success) {}
288		}
289
290	+	/**
291	+	* read-unlocking an unlocked lock throws IllegalMonitorStateException
292	+	*/
293	+	public void testReadUnlock_IMSE() { testReadUnlock_IMSE(false); }
294	+	public void testReadUnlock_IMSE_fair() { testReadUnlock_IMSE(true); }
295	+	public void testReadUnlock_IMSE(boolean fair) {
296	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
297	+	try {
298	+	lock.readLock().unlock();
299	+	shouldThrow();
300	+	} catch (IllegalMonitorStateException success) {}
301	+	}
302
303		/**
304		* write-lockInterruptibly is interruptible
305		*/
306	<	public void testWriteLockInterruptibly_Interrupted() throws Exception {
307	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
306	>	public void testWriteLockInterruptibly_Interruptible() { testWriteLockInterruptibly_Interruptible(false); }
307	>	public void testWriteLockInterruptibly_Interruptible_fair() { testWriteLockInterruptibly_Interruptible(true); }
308	>	public void testWriteLockInterruptibly_Interruptible(boolean fair) {
309	>	final PublicReentrantReadWriteLock lock =
310	>	new PublicReentrantReadWriteLock(fair);
311		lock.writeLock().lock();
312		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
313		public void realRun() throws InterruptedException {
314		lock.writeLock().lockInterruptibly();
315		}});
316
317	<	Thread.sleep(SHORT_DELAY_MS);
317	>	waitForQueuedThread(lock, t);
318		t.interrupt();
319	<	awaitTermination(t, LONG_DELAY_MS);
319	>	awaitTermination(t);
320		releaseWriteLock(lock);
321		}
322
323		/**
324		* timed write-tryLock is interruptible
325		*/
326	<	public void testWriteTryLock_Interrupted() throws InterruptedException {
327	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
326	>	public void testWriteTryLock_Interruptible() { testWriteTryLock_Interruptible(false); }
327	>	public void testWriteTryLock_Interruptible_fair() { testWriteTryLock_Interruptible(true); }
328	>	public void testWriteTryLock_Interruptible(boolean fair) {
329	>	final PublicReentrantReadWriteLock lock =
330	>	new PublicReentrantReadWriteLock(fair);
331		lock.writeLock().lock();
332		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
333		public void realRun() throws InterruptedException {
334	<	lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS);
334	>	lock.writeLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
335		}});
336
337	<	Thread.sleep(SHORT_DELAY_MS);
337	>	waitForQueuedThread(lock, t);
338		t.interrupt();
339	<	awaitTermination(t, LONG_DELAY_MS);
339	>	awaitTermination(t);
340		releaseWriteLock(lock);
341		}
342
343		/**
344		* read-lockInterruptibly is interruptible
345		*/
346	<	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
347	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
346	>	public void testReadLockInterruptibly_Interruptible() { testReadLockInterruptibly_Interruptible(false); }
347	>	public void testReadLockInterruptibly_Interruptible_fair() { testReadLockInterruptibly_Interruptible(true); }
348	>	public void testReadLockInterruptibly_Interruptible(boolean fair) {
349	>	final PublicReentrantReadWriteLock lock =
350	>	new PublicReentrantReadWriteLock(fair);
351		lock.writeLock().lock();
352		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
353		public void realRun() throws InterruptedException {
354		lock.readLock().lockInterruptibly();
355		}});
356
357	<	Thread.sleep(SHORT_DELAY_MS);
357	>	waitForQueuedThread(lock, t);
358		t.interrupt();
359	<	awaitTermination(t, LONG_DELAY_MS);
359	>	awaitTermination(t);
360		releaseWriteLock(lock);
361		}
362
363		/**
364		* timed read-tryLock is interruptible
365		*/
366	<	public void testReadTryLock_Interrupted() throws InterruptedException {
367	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
366	>	public void testReadTryLock_Interruptible() { testReadTryLock_Interruptible(false); }
367	>	public void testReadTryLock_Interruptible_fair() { testReadTryLock_Interruptible(true); }
368	>	public void testReadTryLock_Interruptible(boolean fair) {
369	>	final PublicReentrantReadWriteLock lock =
370	>	new PublicReentrantReadWriteLock(fair);
371		lock.writeLock().lock();
372		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
373		public void realRun() throws InterruptedException {
374	<	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
374	>	lock.readLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
375		}});
376
377	<	Thread.sleep(SHORT_DELAY_MS);
377	>	waitForQueuedThread(lock, t);
378		t.interrupt();
379	<	awaitTermination(t, LONG_DELAY_MS);
379	>	awaitTermination(t);
380		releaseWriteLock(lock);
381		}
382
383	+	/**
384	+	* write-tryLock on an unlocked lock succeeds
385	+	*/
386	+	public void testWriteTryLock() { testWriteTryLock(false); }
387	+	public void testWriteTryLock_fair() { testWriteTryLock(true); }
388	+	public void testWriteTryLock(boolean fair) {
389	+	final PublicReentrantReadWriteLock lock =
390	+	new PublicReentrantReadWriteLock(fair);
391	+	assertTrue(lock.writeLock().tryLock());
392	+	assertWriteLockedByMoi(lock);
393	+	assertTrue(lock.writeLock().tryLock());
394	+	assertWriteLockedByMoi(lock);
395	+	lock.writeLock().unlock();
396	+	releaseWriteLock(lock);
397	+	}
398
399		/**
400		* write-tryLock fails if locked
401		*/
402	<	public void testWriteTryLockWhenLocked() throws InterruptedException {
403	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
402	>	public void testWriteTryLockWhenLocked() { testWriteTryLockWhenLocked(false); }
403	>	public void testWriteTryLockWhenLocked_fair() { testWriteTryLockWhenLocked(true); }
404	>	public void testWriteTryLockWhenLocked(boolean fair) {
405	>	final PublicReentrantReadWriteLock lock =
406	>	new PublicReentrantReadWriteLock(fair);
407		lock.writeLock().lock();
408		Thread t = newStartedThread(new CheckedRunnable() {
409		public void realRun() {
410		assertFalse(lock.writeLock().tryLock());
411		}});
412
413	<	awaitTermination(t, LONG_DELAY_MS);
413	>	awaitTermination(t);
414		releaseWriteLock(lock);
415		}
416
417		/**
418		* read-tryLock fails if locked
419		*/
420	<	public void testReadTryLockWhenLocked() throws InterruptedException {
421	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
420	>	public void testReadTryLockWhenLocked() { testReadTryLockWhenLocked(false); }
421	>	public void testReadTryLockWhenLocked_fair() { testReadTryLockWhenLocked(true); }
422	>	public void testReadTryLockWhenLocked(boolean fair) {
423	>	final PublicReentrantReadWriteLock lock =
424	>	new PublicReentrantReadWriteLock(fair);
425		lock.writeLock().lock();
426		Thread t = newStartedThread(new CheckedRunnable() {
427		public void realRun() {
428		assertFalse(lock.readLock().tryLock());
429		}});
430
431	<	awaitTermination(t, LONG_DELAY_MS);
431	>	awaitTermination(t);
432		releaseWriteLock(lock);
433		}
434
435		/**
436		* Multiple threads can hold a read lock when not write-locked
437		*/
438	<	public void testMultipleReadLocks() throws InterruptedException {
439	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
438	>	public void testMultipleReadLocks() { testMultipleReadLocks(false); }
439	>	public void testMultipleReadLocks_fair() { testMultipleReadLocks(true); }
440	>	public void testMultipleReadLocks(boolean fair) {
441	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
442		lock.readLock().lock();
443		Thread t = newStartedThread(new CheckedRunnable() {
444	<	public void realRun() {
444	>	public void realRun() throws InterruptedException {
445		assertTrue(lock.readLock().tryLock());
446		lock.readLock().unlock();
447	+	assertTrue(lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS));
448	+	lock.readLock().unlock();
449	+	lock.readLock().lock();
450	+	lock.readLock().unlock();
451		}});
452
453	<	awaitTermination(t, LONG_DELAY_MS);
453	>	awaitTermination(t);
454		lock.readLock().unlock();
455		}
456
457		/**
458	<	* A writelock succeeds after reading threads unlock
458	>	* A writelock succeeds only after a reading thread unlocks
459		*/
460	<	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
461	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
460	>	public void testWriteAfterReadLock() { testWriteAfterReadLock(false); }
461	>	public void testWriteAfterReadLock_fair() { testWriteAfterReadLock(true); }
462	>	public void testWriteAfterReadLock(boolean fair) {
463	>	final PublicReentrantReadWriteLock lock =
464	>	new PublicReentrantReadWriteLock(fair);
465	>	lock.readLock().lock();
466	>	Thread t = newStartedThread(new CheckedRunnable() {
467	>	public void realRun() {
468	>	assertEquals(1, lock.getReadLockCount());
469	>	lock.writeLock().lock();
470	>	assertEquals(0, lock.getReadLockCount());
471	>	lock.writeLock().unlock();
472	>	}});
473	>	waitForQueuedThread(lock, t);
474	>	assertNotWriteLocked(lock);
475	>	assertEquals(1, lock.getReadLockCount());
476	>	lock.readLock().unlock();
477	>	assertEquals(0, lock.getReadLockCount());
478	>	awaitTermination(t);
479	>	assertNotWriteLocked(lock);
480	>	}
481	>
482	>	/**
483	>	* A writelock succeeds only after reading threads unlock
484	>	*/
485	>	public void testWriteAfterMultipleReadLocks() { testWriteAfterMultipleReadLocks(false); }
486	>	public void testWriteAfterMultipleReadLocks_fair() { testWriteAfterMultipleReadLocks(true); }
487	>	public void testWriteAfterMultipleReadLocks(boolean fair) {
488	>	final PublicReentrantReadWriteLock lock =
489	>	new PublicReentrantReadWriteLock(fair);
490	>	lock.readLock().lock();
491		lock.readLock().lock();
492		Thread t1 = newStartedThread(new CheckedRunnable() {
493		public void realRun() {
494		lock.readLock().lock();
495	+	assertEquals(3, lock.getReadLockCount());
496		lock.readLock().unlock();
497		}});
498	+	awaitTermination(t1);
499	+
500		Thread t2 = newStartedThread(new CheckedRunnable() {
501		public void realRun() {
502	+	assertEquals(2, lock.getReadLockCount());
503		lock.writeLock().lock();
504	+	assertEquals(0, lock.getReadLockCount());
505		lock.writeLock().unlock();
506		}});
507	<
508	<	Thread.sleep(SHORT_DELAY_MS);
507	>	waitForQueuedThread(lock, t2);
508	>	assertNotWriteLocked(lock);
509	>	assertEquals(2, lock.getReadLockCount());
510	>	lock.readLock().unlock();
511		lock.readLock().unlock();
512	<	awaitTermination(t1, LONG_DELAY_MS);
513	<	awaitTermination(t2, LONG_DELAY_MS);
512	>	assertEquals(0, lock.getReadLockCount());
513	>	awaitTermination(t2);
514	>	assertNotWriteLocked(lock);
515		}
516
517		/**
518	<	* Readlocks succeed after a writing thread unlocks
518	>	* A thread that tries to acquire a fair read lock (non-reentrantly)
519	>	* will block if there is a waiting writer thread
520		*/
521	<	public void testReadAfterWriteLock() throws InterruptedException {
522	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
523	<	lock.writeLock().lock();
521	>	public void testReaderWriterReaderFairFifo() {
522	>	final PublicReentrantReadWriteLock lock =
523	>	new PublicReentrantReadWriteLock(true);
524	>	final AtomicBoolean t1GotLock = new AtomicBoolean(false);
525	>
526	>	lock.readLock().lock();
527		Thread t1 = newStartedThread(new CheckedRunnable() {
528		public void realRun() {
529	<	lock.readLock().lock();
530	<	lock.readLock().unlock();
529	>	assertEquals(1, lock.getReadLockCount());
530	>	lock.writeLock().lock();
531	>	assertEquals(0, lock.getReadLockCount());
532	>	t1GotLock.set(true);
533	>	lock.writeLock().unlock();
534		}});
535	+	waitForQueuedThread(lock, t1);
536	+
537		Thread t2 = newStartedThread(new CheckedRunnable() {
538		public void realRun() {
539	+	assertEquals(1, lock.getReadLockCount());
540		lock.readLock().lock();
541	+	assertEquals(1, lock.getReadLockCount());
542	+	assertTrue(t1GotLock.get());
543		lock.readLock().unlock();
544		}});
545	<
546	<	Thread.sleep(SHORT_DELAY_MS);
547	<	releaseWriteLock(lock);
548	<	awaitTermination(t1, LONG_DELAY_MS);
356	<	awaitTermination(t2, LONG_DELAY_MS);
357	<	}
358	<
359	<	/**
360	<	* Read trylock succeeds if write locked by current thread
361	<	*/
362	<	public void testReadHoldingWriteLock() {
363	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
364	<	lock.writeLock().lock();
365	<	assertTrue(lock.readLock().tryLock());
545	>	waitForQueuedThread(lock, t2);
546	>	assertTrue(t1.isAlive());
547	>	assertNotWriteLocked(lock);
548	>	assertEquals(1, lock.getReadLockCount());
549		lock.readLock().unlock();
550	<	lock.writeLock().unlock();
550	>	awaitTermination(t1);
551	>	awaitTermination(t2);
552	>	assertNotWriteLocked(lock);
553		}
554
555		/**
556	<	* Read lock succeeds if write locked by current thread even if
372	<	* other threads are waiting for readlock
556	>	* Readlocks succeed only after a writing thread unlocks
557		*/
558	<	public void testReadHoldingWriteLock2() throws InterruptedException {
559	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
558	>	public void testReadAfterWriteLock() { testReadAfterWriteLock(false); }
559	>	public void testReadAfterWriteLock_fair() { testReadAfterWriteLock(true); }
560	>	public void testReadAfterWriteLock(boolean fair) {
561	>	final PublicReentrantReadWriteLock lock =
562	>	new PublicReentrantReadWriteLock(fair);
563		lock.writeLock().lock();
564		Thread t1 = newStartedThread(new CheckedRunnable() {
565		public void realRun() {
#	Line 385 \| Line 572 \| public class ReentrantReadWriteLockTest
572		lock.readLock().unlock();
573		}});
574
575	<	lock.readLock().lock();
576	<	lock.readLock().unlock();
577	<	Thread.sleep(SHORT_DELAY_MS);
578	<	lock.readLock().lock();
579	<	lock.readLock().unlock();
393	<	lock.writeLock().unlock();
394	<	awaitTermination(t1, LONG_DELAY_MS);
395	<	awaitTermination(t2, LONG_DELAY_MS);
575	>	waitForQueuedThread(lock, t1);
576	>	waitForQueuedThread(lock, t2);
577	>	releaseWriteLock(lock);
578	>	awaitTermination(t1);
579	>	awaitTermination(t2);
580		}
581
582		/**
583	<	* Read lock succeeds if write locked by current thread even if
400	<	* other threads are waiting for writelock
583	>	* Read trylock succeeds if write locked by current thread
584		*/
585	<	public void testReadHoldingWriteLock3() throws InterruptedException {
586	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
585	>	public void testReadHoldingWriteLock() { testReadHoldingWriteLock(false); }
586	>	public void testReadHoldingWriteLock_fair() { testReadHoldingWriteLock(true); }
587	>	public void testReadHoldingWriteLock(boolean fair) {
588	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
589		lock.writeLock().lock();
590	<	Thread t1 = newStartedThread(new CheckedRunnable() {
406	<	public void realRun() {
407	<	lock.writeLock().lock();
408	<	lock.writeLock().unlock();
409	<	}});
410	<	Thread t2 = newStartedThread(new CheckedRunnable() {
411	<	public void realRun() {
412	<	lock.writeLock().lock();
413	<	lock.writeLock().unlock();
414	<	}});
415	<
416	<	lock.readLock().lock();
417	<	lock.readLock().unlock();
418	<	Thread.sleep(SHORT_DELAY_MS);
419	<	lock.readLock().lock();
590	>	assertTrue(lock.readLock().tryLock());
591		lock.readLock().unlock();
592		lock.writeLock().unlock();
422	–	awaitTermination(t1, LONG_DELAY_MS);
423	–	awaitTermination(t2, LONG_DELAY_MS);
593		}
594
426	–
595		/**
596	<	* Write lock succeeds if write locked by current thread even if
597	<	* other threads are waiting for writelock
596	>	* Read trylock succeeds (barging) even in the presence of waiting
597	>	* readers and/or writers
598		*/
599	<	public void testWriteHoldingWriteLock4() throws InterruptedException {
600	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
601	<	lock.writeLock().lock();
599	>	public void testReadTryLockBarging() { testReadTryLockBarging(false); }
600	>	public void testReadTryLockBarging_fair() { testReadTryLockBarging(true); }
601	>	public void testReadTryLockBarging(boolean fair) {
602	>	final PublicReentrantReadWriteLock lock =
603	>	new PublicReentrantReadWriteLock(fair);
604	>	lock.readLock().lock();
605	>
606		Thread t1 = newStartedThread(new CheckedRunnable() {
607		public void realRun() {
608		lock.writeLock().lock();
609		lock.writeLock().unlock();
610		}});
611	+
612	+	waitForQueuedThread(lock, t1);
613	+
614		Thread t2 = newStartedThread(new CheckedRunnable() {
615		public void realRun() {
616	<	lock.writeLock().lock();
617	<	lock.writeLock().unlock();
616	>	lock.readLock().lock();
617	>	lock.readLock().unlock();
618		}});
619
620	<	lock.writeLock().lock();
621	<	lock.writeLock().unlock();
447	<	Thread.sleep(SHORT_DELAY_MS);
448	<	lock.writeLock().lock();
449	<	lock.writeLock().unlock();
450	<	lock.writeLock().unlock();
451	<	awaitTermination(t1, LONG_DELAY_MS);
452	<	awaitTermination(t2, LONG_DELAY_MS);
453	<	}
620	>	if (fair)
621	>	waitForQueuedThread(lock, t2);
622
623	+	Thread t3 = newStartedThread(new CheckedRunnable() {
624	+	public void realRun() {
625	+	lock.readLock().tryLock();
626	+	lock.readLock().unlock();
627	+	}});
628
629	<	/**
630	<	* Fair Read trylock succeeds if write locked by current thread
631	<	*/
632	<	public void testReadHoldingWriteLockFair() {
460	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
461	<	lock.writeLock().lock();
462	<	assertTrue(lock.readLock().tryLock());
629	>	assertTrue(lock.getReadLockCount() > 0);
630	>	awaitTermination(t3);
631	>	assertTrue(t1.isAlive());
632	>	if (fair) assertTrue(t2.isAlive());
633		lock.readLock().unlock();
634	<	lock.writeLock().unlock();
634	>	awaitTermination(t1);
635	>	awaitTermination(t2);
636		}
637
638		/**
639	<	* Fair Read lock succeeds if write locked by current thread even if
639	>	* Read lock succeeds if write locked by current thread even if
640		* other threads are waiting for readlock
641		*/
642	<	public void testReadHoldingWriteLockFair2() throws InterruptedException {
643	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
642	>	public void testReadHoldingWriteLock2() { testReadHoldingWriteLock2(false); }
643	>	public void testReadHoldingWriteLock2_fair() { testReadHoldingWriteLock2(true); }
644	>	public void testReadHoldingWriteLock2(boolean fair) {
645	>	final PublicReentrantReadWriteLock lock =
646	>	new PublicReentrantReadWriteLock(fair);
647		lock.writeLock().lock();
648	+	lock.readLock().lock();
649	+	lock.readLock().unlock();
650	+
651		Thread t1 = newStartedThread(new CheckedRunnable() {
652		public void realRun() {
653		lock.readLock().lock();
#	Line 482 \| Line 659 \| public class ReentrantReadWriteLockTest
659		lock.readLock().unlock();
660		}});
661
662	+	waitForQueuedThread(lock, t1);
663	+	waitForQueuedThread(lock, t2);
664	+	assertWriteLockedByMoi(lock);
665		lock.readLock().lock();
666		lock.readLock().unlock();
667	<	Thread.sleep(SHORT_DELAY_MS);
668	<	lock.readLock().lock();
669	<	lock.readLock().unlock();
490	<	lock.writeLock().unlock();
491	<	awaitTermination(t1, LONG_DELAY_MS);
492	<	awaitTermination(t2, LONG_DELAY_MS);
667	>	releaseWriteLock(lock);
668	>	awaitTermination(t1);
669	>	awaitTermination(t2);
670		}
671
495	–
672		/**
673	<	* Fair Read lock succeeds if write locked by current thread even if
673	>	* Read lock succeeds if write locked by current thread even if
674		* other threads are waiting for writelock
675		*/
676	<	public void testReadHoldingWriteLockFair3() throws InterruptedException {
677	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
676	>	public void testReadHoldingWriteLock3() { testReadHoldingWriteLock3(false); }
677	>	public void testReadHoldingWriteLock3_fair() { testReadHoldingWriteLock3(true); }
678	>	public void testReadHoldingWriteLock3(boolean fair) {
679	>	final PublicReentrantReadWriteLock lock =
680	>	new PublicReentrantReadWriteLock(fair);
681		lock.writeLock().lock();
682	+	lock.readLock().lock();
683	+	lock.readLock().unlock();
684	+
685		Thread t1 = newStartedThread(new CheckedRunnable() {
686		public void realRun() {
687		lock.writeLock().lock();
#	Line 511 \| Line 693 \| public class ReentrantReadWriteLockTest
693		lock.writeLock().unlock();
694		}});
695
696	+	waitForQueuedThread(lock, t1);
697	+	waitForQueuedThread(lock, t2);
698	+	assertWriteLockedByMoi(lock);
699		lock.readLock().lock();
700		lock.readLock().unlock();
701	<	Thread.sleep(SHORT_DELAY_MS);
517	<	lock.readLock().lock();
518	<	lock.readLock().unlock();
701	>	assertWriteLockedByMoi(lock);
702		lock.writeLock().unlock();
703	<	awaitTermination(t1, LONG_DELAY_MS);
704	<	awaitTermination(t2, LONG_DELAY_MS);
703	>	awaitTermination(t1);
704	>	awaitTermination(t2);
705		}
706
524	–
707		/**
708	<	* Fair Write lock succeeds if write locked by current thread even if
708	>	* Write lock succeeds if write locked by current thread even if
709		* other threads are waiting for writelock
710		*/
711	<	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
712	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
711	>	public void testWriteHoldingWriteLock4() { testWriteHoldingWriteLock4(false); }
712	>	public void testWriteHoldingWriteLock4_fair() { testWriteHoldingWriteLock4(true); }
713	>	public void testWriteHoldingWriteLock4(boolean fair) {
714	>	final PublicReentrantReadWriteLock lock =
715	>	new PublicReentrantReadWriteLock(fair);
716	>	lock.writeLock().lock();
717		lock.writeLock().lock();
718	+	lock.writeLock().unlock();
719	+
720		Thread t1 = newStartedThread(new CheckedRunnable() {
721		public void realRun() {
722		lock.writeLock().lock();
#	Line 540 \| Line 728 \| public class ReentrantReadWriteLockTest
728		lock.writeLock().unlock();
729		}});
730
731	<	Thread.sleep(SHORT_DELAY_MS);
732	<	assertTrue(lock.isWriteLockedByCurrentThread());
731	>	waitForQueuedThread(lock, t1);
732	>	waitForQueuedThread(lock, t2);
733	>	assertWriteLockedByMoi(lock);
734		assertEquals(1, lock.getWriteHoldCount());
735		lock.writeLock().lock();
736	+	assertWriteLockedByMoi(lock);
737		assertEquals(2, lock.getWriteHoldCount());
738		lock.writeLock().unlock();
739	<	lock.writeLock().lock();
740	<	lock.writeLock().unlock();
739	>	assertWriteLockedByMoi(lock);
740	>	assertEquals(1, lock.getWriteHoldCount());
741		lock.writeLock().unlock();
742	<	awaitTermination(t1, LONG_DELAY_MS);
743	<	awaitTermination(t2, LONG_DELAY_MS);
742	>	awaitTermination(t1);
743	>	awaitTermination(t2);
744		}
745
556	–
746		/**
747		* Read tryLock succeeds if readlocked but not writelocked
748		*/
749	<	public void testTryLockWhenReadLocked() throws InterruptedException {
750	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
749	>	public void testTryLockWhenReadLocked() { testTryLockWhenReadLocked(false); }
750	>	public void testTryLockWhenReadLocked_fair() { testTryLockWhenReadLocked(true); }
751	>	public void testTryLockWhenReadLocked(boolean fair) {
752	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
753		lock.readLock().lock();
754		Thread t = newStartedThread(new CheckedRunnable() {
755		public void realRun() {
#	Line 566 \| Line 757 \| public class ReentrantReadWriteLockTest
757		lock.readLock().unlock();
758		}});
759
760	<	awaitTermination(t, LONG_DELAY_MS);
760	>	awaitTermination(t);
761		lock.readLock().unlock();
762		}
763
764		/**
765		* write tryLock fails when readlocked
766		*/
767	<	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
768	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
767	>	public void testWriteTryLockWhenReadLocked() { testWriteTryLockWhenReadLocked(false); }
768	>	public void testWriteTryLockWhenReadLocked_fair() { testWriteTryLockWhenReadLocked(true); }
769	>	public void testWriteTryLockWhenReadLocked(boolean fair) {
770	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
771		lock.readLock().lock();
772		Thread t = newStartedThread(new CheckedRunnable() {
773		public void realRun() {
774		assertFalse(lock.writeLock().tryLock());
775		}});
776
777	<	awaitTermination(t, LONG_DELAY_MS);
777	>	awaitTermination(t);
778		lock.readLock().unlock();
779		}
780
588	–
589	–	/**
590	–	* Fair Read tryLock succeeds if readlocked but not writelocked
591	–	*/
592	–	public void testTryLockWhenReadLockedFair() throws InterruptedException {
593	–	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
594	–	lock.readLock().lock();
595	–	Thread t = newStartedThread(new CheckedRunnable() {
596	–	public void realRun() {
597	–	assertTrue(lock.readLock().tryLock());
598	–	lock.readLock().unlock();
599	–	}});
600	–
601	–	awaitTermination(t, LONG_DELAY_MS);
602	–	lock.readLock().unlock();
603	–	}
604	–
605	–
606	–
607	–	/**
608	–	* Fair write tryLock fails when readlocked
609	–	*/
610	–	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
611	–	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
612	–	lock.readLock().lock();
613	–	Thread t = newStartedThread(new CheckedRunnable() {
614	–	public void realRun() {
615	–	assertFalse(lock.writeLock().tryLock());
616	–	}});
617	–
618	–	awaitTermination(t, LONG_DELAY_MS);
619	–	lock.readLock().unlock();
620	–	}
621	–
622	–
623	–
781		/**
782		* write timed tryLock times out if locked
783		*/
784	<	public void testWriteTryLock_Timeout() throws InterruptedException {
785	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
784	>	public void testWriteTryLock_Timeout() { testWriteTryLock_Timeout(false); }
785	>	public void testWriteTryLock_Timeout_fair() { testWriteTryLock_Timeout(true); }
786	>	public void testWriteTryLock_Timeout(boolean fair) {
787	>	final PublicReentrantReadWriteLock lock =
788	>	new PublicReentrantReadWriteLock(fair);
789		lock.writeLock().lock();
790		Thread t = newStartedThread(new CheckedRunnable() {
791		public void realRun() throws InterruptedException {
792	<	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
792	>	long startTime = System.nanoTime();
793	>	long timeoutMillis = 10;
794	>	assertFalse(lock.writeLock().tryLock(timeoutMillis, MILLISECONDS));
795	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
796		}});
797
798	<	awaitTermination(t, LONG_DELAY_MS);
799	<	assertTrue(lock.writeLock().isHeldByCurrentThread());
637	<	lock.writeLock().unlock();
798	>	awaitTermination(t);
799	>	releaseWriteLock(lock);
800		}
801
802		/**
803		* read timed tryLock times out if write-locked
804		*/
805	<	public void testReadTryLock_Timeout() throws InterruptedException {
806	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
805	>	public void testReadTryLock_Timeout() { testReadTryLock_Timeout(false); }
806	>	public void testReadTryLock_Timeout_fair() { testReadTryLock_Timeout(true); }
807	>	public void testReadTryLock_Timeout(boolean fair) {
808	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
809		lock.writeLock().lock();
810		Thread t = newStartedThread(new CheckedRunnable() {
811		public void realRun() throws InterruptedException {
812	<	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
812	>	long startTime = System.nanoTime();
813	>	long timeoutMillis = 10;
814	>	assertFalse(lock.readLock().tryLock(timeoutMillis, MILLISECONDS));
815	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
816		}});
817
818	<	awaitTermination(t, LONG_DELAY_MS);
818	>	awaitTermination(t);
819		assertTrue(lock.writeLock().isHeldByCurrentThread());
820		lock.writeLock().unlock();
821		}
822
656	–
823		/**
824	<	* write lockInterruptibly succeeds if lock free else is interruptible
824	>	* write lockInterruptibly succeeds if unlocked, else is interruptible
825		*/
826	<	public void testWriteLockInterruptibly() throws InterruptedException {
827	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
828	<	lock.writeLock().lockInterruptibly();
826	>	public void testWriteLockInterruptibly() { testWriteLockInterruptibly(false); }
827	>	public void testWriteLockInterruptibly_fair() { testWriteLockInterruptibly(true); }
828	>	public void testWriteLockInterruptibly(boolean fair) {
829	>	final PublicReentrantReadWriteLock lock =
830	>	new PublicReentrantReadWriteLock(fair);
831	>	try {
832	>	lock.writeLock().lockInterruptibly();
833	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
834		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
835		public void realRun() throws InterruptedException {
836		lock.writeLock().lockInterruptibly();
837		}});
838
839	<	Thread.sleep(SHORT_DELAY_MS);
839	>	waitForQueuedThread(lock, t);
840		t.interrupt();
841	<	awaitTermination(t, LONG_DELAY_MS);
841	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
842	>	awaitTermination(t);
843		releaseWriteLock(lock);
844		}
845
846		/**
847		* read lockInterruptibly succeeds if lock free else is interruptible
848		*/
849	<	public void testReadLockInterruptibly() throws InterruptedException {
850	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
851	<	lock.writeLock().lockInterruptibly();
849	>	public void testReadLockInterruptibly() { testReadLockInterruptibly(false); }
850	>	public void testReadLockInterruptibly_fair() { testReadLockInterruptibly(true); }
851	>	public void testReadLockInterruptibly(boolean fair) {
852	>	final PublicReentrantReadWriteLock lock =
853	>	new PublicReentrantReadWriteLock(fair);
854	>	try {
855	>	lock.readLock().lockInterruptibly();
856	>	lock.readLock().unlock();
857	>	lock.writeLock().lockInterruptibly();
858	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
859		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
860		public void realRun() throws InterruptedException {
861		lock.readLock().lockInterruptibly();
862		}});
863
864	<	Thread.sleep(SHORT_DELAY_MS);
864	>	waitForQueuedThread(lock, t);
865		t.interrupt();
866	<	awaitTermination(t, LONG_DELAY_MS);
866	>	awaitTermination(t);
867		releaseWriteLock(lock);
868		}
869
870		/**
871		* Calling await without holding lock throws IllegalMonitorStateException
872		*/
873	<	public void testAwait_IllegalMonitor() throws InterruptedException {
874	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
873	>	public void testAwait_IMSE() { testAwait_IMSE(false); }
874	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
875	>	public void testAwait_IMSE(boolean fair) {
876	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
877		final Condition c = lock.writeLock().newCondition();
878	<	try {
879	<	c.await();
880	<	shouldThrow();
881	<	} catch (IllegalMonitorStateException success) {}
878	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
879	>	long startTime = System.nanoTime();
880	>	try {
881	>	await(c, awaitMethod);
882	>	shouldThrow();
883	>	} catch (IllegalMonitorStateException success) {
884	>	} catch (InterruptedException fail) {
885	>	threadUnexpectedException(fail);
886	>	}
887	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
888	>	}
889		}
890
891		/**
892		* Calling signal without holding lock throws IllegalMonitorStateException
893		*/
894	<	public void testSignal_IllegalMonitor() {
895	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
894	>	public void testSignal_IMSE() { testSignal_IMSE(false); }
895	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
896	>	public void testSignal_IMSE(boolean fair) {
897	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
898		final Condition c = lock.writeLock().newCondition();
899		try {
900		c.signal();
#	Line 713 \| Line 903 \| public class ReentrantReadWriteLockTest
903		}
904
905		/**
906	<	* awaitNanos without a signal times out
906	>	* Calling signalAll without holding lock throws IllegalMonitorStateException
907		*/
908	<	public void testAwaitNanos_Timeout() throws InterruptedException {
909	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
908	>	public void testSignalAll_IMSE() { testSignalAll_IMSE(false); }
909	>	public void testSignalAll_IMSE_fair() { testSignalAll_IMSE(true); }
910	>	public void testSignalAll_IMSE(boolean fair) {
911	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
912		final Condition c = lock.writeLock().newCondition();
913	<
914	<	lock.writeLock().lock();
915	<	long t = c.awaitNanos(100);
916	<	assertTrue(t <= 0);
725	<	lock.writeLock().unlock();
913	>	try {
914	>	c.signalAll();
915	>	shouldThrow();
916	>	} catch (IllegalMonitorStateException success) {}
917		}
918
919	+	/**
920	+	* awaitNanos without a signal times out
921	+	*/
922	+	public void testAwaitNanos_Timeout() { testAwaitNanos_Timeout(false); }
923	+	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
924	+	public void testAwaitNanos_Timeout(boolean fair) {
925	+	try {
926	+	final ReentrantReadWriteLock lock =
927	+	new ReentrantReadWriteLock(fair);
928	+	final Condition c = lock.writeLock().newCondition();
929	+	lock.writeLock().lock();
930	+	long startTime = System.nanoTime();
931	+	long timeoutMillis = 10;
932	+	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
933	+	long nanosRemaining = c.awaitNanos(timeoutNanos);
934	+	assertTrue(nanosRemaining <= 0);
935	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
936	+	lock.writeLock().unlock();
937	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
938	+	}
939
940		/**
941		* timed await without a signal times out
942		*/
943	<	public void testAwait_Timeout() throws InterruptedException {
944	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
945	<	final Condition c = lock.writeLock().newCondition();
946	<	lock.writeLock().lock();
947	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
948	<	lock.writeLock().unlock();
943	>	public void testAwait_Timeout() { testAwait_Timeout(false); }
944	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
945	>	public void testAwait_Timeout(boolean fair) {
946	>	try {
947	>	final ReentrantReadWriteLock lock =
948	>	new ReentrantReadWriteLock(fair);
949	>	final Condition c = lock.writeLock().newCondition();
950	>	lock.writeLock().lock();
951	>	long startTime = System.nanoTime();
952	>	long timeoutMillis = 10;
953	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
954	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
955	>	lock.writeLock().unlock();
956	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
957		}
958
959		/**
960		* awaitUntil without a signal times out
961		*/
962	<	public void testAwaitUntil_Timeout() throws InterruptedException {
963	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
964	<	final Condition c = lock.writeLock().newCondition();
965	<	lock.writeLock().lock();
966	<	java.util.Date d = new java.util.Date();
967	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
968	<	lock.writeLock().unlock();
962	>	public void testAwaitUntil_Timeout() { testAwaitUntil_Timeout(false); }
963	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
964	>	public void testAwaitUntil_Timeout(boolean fair) {
965	>	try {
966	>	final ReentrantReadWriteLock lock =
967	>	new ReentrantReadWriteLock(fair);
968	>	final Condition c = lock.writeLock().newCondition();
969	>	lock.writeLock().lock();
970	>	long startTime = System.nanoTime();
971	>	long timeoutMillis = 10;
972	>	java.util.Date d = new java.util.Date();
973	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
974	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
975	>	lock.writeLock().unlock();
976	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
977		}
978
979		/**
980		* await returns when signalled
981		*/
982	<	public void testAwait() throws InterruptedException {
983	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
982	>	public void testAwait() { testAwait(false); }
983	>	public void testAwait_fair() { testAwait(true); }
984	>	public void testAwait(boolean fair) {
985	>	final PublicReentrantReadWriteLock lock =
986	>	new PublicReentrantReadWriteLock(fair);
987		final Condition c = lock.writeLock().newCondition();
988	+	final CountDownLatch locked = new CountDownLatch(1);
989		Thread t = newStartedThread(new CheckedRunnable() {
990		public void realRun() throws InterruptedException {
991		lock.writeLock().lock();
992	+	locked.countDown();
993		c.await();
994		lock.writeLock().unlock();
995		}});
996
997	<	Thread.sleep(SHORT_DELAY_MS);
997	>	await(locked);
998		lock.writeLock().lock();
999	+	assertHasWaiters(lock, c, t);
1000		c.signal();
1001	+	assertHasNoWaiters(lock, c);
1002	+	assertTrue(t.isAlive());
1003		lock.writeLock().unlock();
1004	<	awaitTermination(t, LONG_DELAY_MS);
770	<	}
771	<
772	<	/** A helper class for uninterruptible wait tests */
773	<	class UninterruptableThread extends Thread {
774	<	private Lock lock;
775	<	private Condition c;
776	<
777	<	public volatile boolean canAwake = false;
778	<	public volatile boolean interrupted = false;
779	<	public volatile boolean lockStarted = false;
780	<
781	<	public UninterruptableThread(Lock lock, Condition c) {
782	<	this.lock = lock;
783	<	this.c = c;
784	<	}
785	<
786	<	public synchronized void run() {
787	<	lock.lock();
788	<	lockStarted = true;
789	<
790	<	while (!canAwake) {
791	<	c.awaitUninterruptibly();
792	<	}
793	<
794	<	interrupted = isInterrupted();
795	<	lock.unlock();
796	<	}
1004	>	awaitTermination(t);
1005		}
1006
1007		/**
1008	<	* awaitUninterruptibly doesn't abort on interrupt
1008	>	* awaitUninterruptibly is uninterruptible
1009		*/
1010	<	public void testAwaitUninterruptibly() throws InterruptedException {
1011	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1010	>	public void testAwaitUninterruptibly() { testAwaitUninterruptibly(false); }
1011	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
1012	>	public void testAwaitUninterruptibly(boolean fair) {
1013	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1014		final Condition c = lock.writeLock().newCondition();
1015	<	UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
1015	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
1016
1017	<	thread.start();
1017	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1018	>	public void realRun() {
1019	>	// Interrupt before awaitUninterruptibly
1020	>	lock.writeLock().lock();
1021	>	pleaseInterrupt.countDown();
1022	>	Thread.currentThread().interrupt();
1023	>	c.awaitUninterruptibly();
1024	>	assertTrue(Thread.interrupted());
1025	>	lock.writeLock().unlock();
1026	>	}});
1027
1028	<	while (!thread.lockStarted) {
1029	<	Thread.sleep(100);
1030	<	}
1028	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1029	>	public void realRun() {
1030	>	// Interrupt during awaitUninterruptibly
1031	>	lock.writeLock().lock();
1032	>	pleaseInterrupt.countDown();
1033	>	c.awaitUninterruptibly();
1034	>	assertTrue(Thread.interrupted());
1035	>	lock.writeLock().unlock();
1036	>	}});
1037
1038	+	await(pleaseInterrupt);
1039		lock.writeLock().lock();
1040	<	try {
1041	<	thread.interrupt();
816	<	thread.canAwake = true;
817	<	c.signal();
818	<	} finally {
819	<	lock.writeLock().unlock();
820	<	}
1040	>	lock.writeLock().unlock();
1041	>	t2.interrupt();
1042
1043	<	awaitTermination(thread, LONG_DELAY_MS);
1044	<	assertTrue(thread.interrupted);
1043	>	assertThreadStaysAlive(t1);
1044	>	assertTrue(t2.isAlive());
1045	>
1046	>	lock.writeLock().lock();
1047	>	c.signalAll();
1048	>	lock.writeLock().unlock();
1049	>
1050	>	awaitTermination(t1);
1051	>	awaitTermination(t2);
1052		}
1053
1054		/**
1055	<	* await is interruptible
1055	>	* await/awaitNanos/awaitUntil is interruptible
1056		*/
1057	<	public void testAwait_Interrupt() throws InterruptedException {
1058	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1057	>	public void testInterruptible_await() { testInterruptible(false, AwaitMethod.await); }
1058	>	public void testInterruptible_await_fair() { testInterruptible(true, AwaitMethod.await); }
1059	>	public void testInterruptible_awaitTimed() { testInterruptible(false, AwaitMethod.awaitTimed); }
1060	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true, AwaitMethod.awaitTimed); }
1061	>	public void testInterruptible_awaitNanos() { testInterruptible(false, AwaitMethod.awaitNanos); }
1062	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true, AwaitMethod.awaitNanos); }
1063	>	public void testInterruptible_awaitUntil() { testInterruptible(false, AwaitMethod.awaitUntil); }
1064	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true, AwaitMethod.awaitUntil); }
1065	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
1066	>	final PublicReentrantReadWriteLock lock =
1067	>	new PublicReentrantReadWriteLock(fair);
1068		final Condition c = lock.writeLock().newCondition();
1069		final CountDownLatch locked = new CountDownLatch(1);
1070		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1071		public void realRun() throws InterruptedException {
1072		lock.writeLock().lock();
1073	<	assertTrue(lock.isWriteLocked());
1073	>	assertWriteLockedByMoi(lock);
1074	>	assertHasNoWaiters(lock, c);
1075		locked.countDown();
1076	<	try { c.await(); }
1077	<	finally { lock.writeLock().unlock(); }
1076	>	try {
1077	>	await(c, awaitMethod);
1078	>	} finally {
1079	>	assertWriteLockedByMoi(lock);
1080	>	assertHasNoWaiters(lock, c);
1081	>	lock.writeLock().unlock();
1082	>	assertFalse(Thread.interrupted());
1083	>	}
1084		}});
1085
1086	<	locked.await();
1087	<	while (lock.isWriteLocked())
844	<	Thread.yield();
1086	>	await(locked);
1087	>	assertHasWaiters(lock, c, t);
1088		t.interrupt();
1089	<	awaitTermination(t, LONG_DELAY_MS);
1090	<	assertFalse(lock.isWriteLocked());
1089	>	awaitTermination(t);
1090	>	assertNotWriteLocked(lock);
1091		}
1092
1093		/**
1094	<	* awaitNanos is interruptible
1094	>	* signalAll wakes up all threads
1095		*/
1096	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
1097	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1096	>	public void testSignalAll_await() { testSignalAll(false, AwaitMethod.await); }
1097	>	public void testSignalAll_await_fair() { testSignalAll(true, AwaitMethod.await); }
1098	>	public void testSignalAll_awaitTimed() { testSignalAll(false, AwaitMethod.awaitTimed); }
1099	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true, AwaitMethod.awaitTimed); }
1100	>	public void testSignalAll_awaitNanos() { testSignalAll(false, AwaitMethod.awaitNanos); }
1101	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true, AwaitMethod.awaitNanos); }
1102	>	public void testSignalAll_awaitUntil() { testSignalAll(false, AwaitMethod.awaitUntil); }
1103	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true, AwaitMethod.awaitUntil); }
1104	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
1105	>	final PublicReentrantReadWriteLock lock =
1106	>	new PublicReentrantReadWriteLock(fair);
1107		final Condition c = lock.writeLock().newCondition();
1108	<	final CountDownLatch locked = new CountDownLatch(1);
1109	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1108	>	final CountDownLatch locked = new CountDownLatch(2);
1109	>	final Lock writeLock = lock.writeLock();
1110	>	class Awaiter extends CheckedRunnable {
1111		public void realRun() throws InterruptedException {
1112	<	lock.writeLock().lock();
860	<	assertTrue(lock.isWriteLocked());
1112	>	writeLock.lock();
1113		locked.countDown();
1114	<	try { c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); }
1115	<	finally { lock.writeLock().unlock(); }
1116	<	}});
1114	>	await(c, awaitMethod);
1115	>	writeLock.unlock();
1116	>	}
1117	>	}
1118
1119	<	locked.await();
1120	<	while (lock.isWriteLocked())
1121	<	Thread.yield();
1122	<	t.interrupt();
1123	<	awaitTermination(t, LONG_DELAY_MS);
1124	<	assertFalse(lock.isWriteLocked());
1119	>	Thread t1 = newStartedThread(new Awaiter());
1120	>	Thread t2 = newStartedThread(new Awaiter());
1121	>
1122	>	await(locked);
1123	>	writeLock.lock();
1124	>	assertHasWaiters(lock, c, t1, t2);
1125	>	c.signalAll();
1126	>	assertHasNoWaiters(lock, c);
1127	>	writeLock.unlock();
1128	>	awaitTermination(t1);
1129	>	awaitTermination(t2);
1130		}
1131
1132		/**
1133	<	* awaitUntil is interruptible
1133	>	* signal wakes up waiting threads in FIFO order
1134		*/
1135	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
1136	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1135	>	public void testSignalWakesFifo() { testSignalWakesFifo(false); }
1136	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1137	>	public void testSignalWakesFifo(boolean fair) {
1138	>	final PublicReentrantReadWriteLock lock =
1139	>	new PublicReentrantReadWriteLock(fair);
1140		final Condition c = lock.writeLock().newCondition();
1141	<	final CountDownLatch locked = new CountDownLatch(1);
1142	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1141	>	final CountDownLatch locked1 = new CountDownLatch(1);
1142	>	final CountDownLatch locked2 = new CountDownLatch(1);
1143	>	final Lock writeLock = lock.writeLock();
1144	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1145		public void realRun() throws InterruptedException {
1146	<	lock.writeLock().lock();
1147	<	assertTrue(lock.isWriteLocked());
1148	<	locked.countDown();
1149	<	java.util.Date d = new java.util.Date();
887	<	try { c.awaitUntil(new java.util.Date(d.getTime() + 10000)); }
888	<	finally { lock.writeLock().unlock(); }
1146	>	writeLock.lock();
1147	>	locked1.countDown();
1148	>	c.await();
1149	>	writeLock.unlock();
1150		}});
1151
1152	<	locked.await();
1153	<	while (lock.isWriteLocked())
1154	<	Thread.yield();
1155	<	t.interrupt();
1156	<	awaitTermination(t, LONG_DELAY_MS);
1157	<	assertFalse(lock.isWriteLocked());
1152	>	await(locked1);
1153	>
1154	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1155	>	public void realRun() throws InterruptedException {
1156	>	writeLock.lock();
1157	>	locked2.countDown();
1158	>	c.await();
1159	>	writeLock.unlock();
1160	>	}});
1161	>
1162	>	await(locked2);
1163	>
1164	>	writeLock.lock();
1165	>	assertHasWaiters(lock, c, t1, t2);
1166	>	assertFalse(lock.hasQueuedThreads());
1167	>	c.signal();
1168	>	assertHasWaiters(lock, c, t2);
1169	>	assertTrue(lock.hasQueuedThread(t1));
1170	>	assertFalse(lock.hasQueuedThread(t2));
1171	>	c.signal();
1172	>	assertHasNoWaiters(lock, c);
1173	>	assertTrue(lock.hasQueuedThread(t1));
1174	>	assertTrue(lock.hasQueuedThread(t2));
1175	>	writeLock.unlock();
1176	>	awaitTermination(t1);
1177	>	awaitTermination(t2);
1178		}
1179
1180		/**
1181	<	* signalAll wakes up all threads
1181	>	* await after multiple reentrant locking preserves lock count
1182		*/
1183	<	public void testSignalAll() throws InterruptedException {
1184	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1183	>	public void testAwaitLockCount() { testAwaitLockCount(false); }
1184	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1185	>	public void testAwaitLockCount(boolean fair) {
1186	>	final PublicReentrantReadWriteLock lock =
1187	>	new PublicReentrantReadWriteLock(fair);
1188		final Condition c = lock.writeLock().newCondition();
1189	+	final CountDownLatch locked = new CountDownLatch(2);
1190		Thread t1 = newStartedThread(new CheckedRunnable() {
1191		public void realRun() throws InterruptedException {
1192		lock.writeLock().lock();
1193	+	assertWriteLockedByMoi(lock);
1194	+	assertEquals(1, lock.writeLock().getHoldCount());
1195	+	locked.countDown();
1196		c.await();
1197	+	assertWriteLockedByMoi(lock);
1198	+	assertEquals(1, lock.writeLock().getHoldCount());
1199		lock.writeLock().unlock();
1200		}});
1201
1202		Thread t2 = newStartedThread(new CheckedRunnable() {
1203		public void realRun() throws InterruptedException {
1204		lock.writeLock().lock();
1205	+	lock.writeLock().lock();
1206	+	assertWriteLockedByMoi(lock);
1207	+	assertEquals(2, lock.writeLock().getHoldCount());
1208	+	locked.countDown();
1209		c.await();
1210	+	assertWriteLockedByMoi(lock);
1211	+	assertEquals(2, lock.writeLock().getHoldCount());
1212	+	lock.writeLock().unlock();
1213		lock.writeLock().unlock();
1214		}});
1215
1216	<	Thread.sleep(SHORT_DELAY_MS);
1216	>	await(locked);
1217		lock.writeLock().lock();
1218	+	assertHasWaiters(lock, c, t1, t2);
1219		c.signalAll();
1220	+	assertHasNoWaiters(lock, c);
1221		lock.writeLock().unlock();
1222	<	awaitTermination(t1, LONG_DELAY_MS);
1223	<	awaitTermination(t2, LONG_DELAY_MS);
1222	>	awaitTermination(t1);
1223	>	awaitTermination(t2);
1224		}
1225
1226		/**
1227		* A serialized lock deserializes as unlocked
1228		*/
1229	<	public void testSerialization() throws Exception {
1230	<	ReentrantReadWriteLock l = new ReentrantReadWriteLock();
1231	<	l.readLock().lock();
1232	<	l.readLock().unlock();
1233	<
1234	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1235	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1236	<	out.writeObject(l);
1237	<	out.close();
1238	<
1239	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1240	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1241	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
1242	<	r.readLock().lock();
1243	<	r.readLock().unlock();
1229	>	public void testSerialization() { testSerialization(false); }
1230	>	public void testSerialization_fair() { testSerialization(true); }
1231	>	public void testSerialization(boolean fair) {
1232	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1233	>	lock.writeLock().lock();
1234	>	lock.readLock().lock();
1235	>
1236	>	ReentrantReadWriteLock clone = serialClone(lock);
1237	>	assertEquals(lock.isFair(), clone.isFair());
1238	>	assertTrue(lock.isWriteLocked());
1239	>	assertFalse(clone.isWriteLocked());
1240	>	assertEquals(1, lock.getReadLockCount());
1241	>	assertEquals(0, clone.getReadLockCount());
1242	>	clone.writeLock().lock();
1243	>	clone.readLock().lock();
1244	>	assertTrue(clone.isWriteLocked());
1245	>	assertEquals(1, clone.getReadLockCount());
1246	>	clone.readLock().unlock();
1247	>	clone.writeLock().unlock();
1248	>	assertFalse(clone.isWriteLocked());
1249	>	assertEquals(1, lock.getReadLockCount());
1250	>	assertEquals(0, clone.getReadLockCount());
1251		}
1252
1253		/**
1254		* hasQueuedThreads reports whether there are waiting threads
1255		*/
1256	<	public void testhasQueuedThreads() throws InterruptedException {
1257	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1256	>	public void testHasQueuedThreads() { testHasQueuedThreads(false); }
1257	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
1258	>	public void testHasQueuedThreads(boolean fair) {
1259	>	final PublicReentrantReadWriteLock lock =
1260	>	new PublicReentrantReadWriteLock(fair);
1261		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1262		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1263		assertFalse(lock.hasQueuedThreads());
1264		lock.writeLock().lock();
1265	+	assertFalse(lock.hasQueuedThreads());
1266		t1.start();
1267	<	Thread.sleep(SHORT_DELAY_MS);
1267	>	waitForQueuedThread(lock, t1);
1268		assertTrue(lock.hasQueuedThreads());
1269		t2.start();
1270	<	Thread.sleep(SHORT_DELAY_MS);
1270	>	waitForQueuedThread(lock, t2);
1271		assertTrue(lock.hasQueuedThreads());
1272		t1.interrupt();
1273	<	Thread.sleep(SHORT_DELAY_MS);
1273	>	awaitTermination(t1);
1274		assertTrue(lock.hasQueuedThreads());
1275		lock.writeLock().unlock();
1276	<	Thread.sleep(SHORT_DELAY_MS);
1276	>	awaitTermination(t2);
1277		assertFalse(lock.hasQueuedThreads());
968	–	awaitTermination(t1, LONG_DELAY_MS);
969	–	awaitTermination(t2, LONG_DELAY_MS);
1278		}
1279
1280		/**
1281		* hasQueuedThread(null) throws NPE
1282		*/
1283	<	public void testHasQueuedThreadNPE() {
1284	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1283	>	public void testHasQueuedThreadNPE() { testHasQueuedThreadNPE(false); }
1284	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
1285	>	public void testHasQueuedThreadNPE(boolean fair) {
1286	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1287		try {
1288	<	sync.hasQueuedThread(null);
1288	>	lock.hasQueuedThread(null);
1289		shouldThrow();
1290		} catch (NullPointerException success) {}
1291		}
1292
1293		/**
1294	<	* hasQueuedThread reports whether a thread is queued.
1294	>	* hasQueuedThread reports whether a thread is queued
1295		*/
1296	<	public void testHasQueuedThread() throws InterruptedException {
1297	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1298	<	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1299	<	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1300	<	assertFalse(sync.hasQueuedThread(t1));
1301	<	assertFalse(sync.hasQueuedThread(t2));
1302	<	sync.writeLock().lock();
1296	>	public void testHasQueuedThread() { testHasQueuedThread(false); }
1297	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
1298	>	public void testHasQueuedThread(boolean fair) {
1299	>	final PublicReentrantReadWriteLock lock =
1300	>	new PublicReentrantReadWriteLock(fair);
1301	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1302	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1303	>	assertFalse(lock.hasQueuedThread(t1));
1304	>	assertFalse(lock.hasQueuedThread(t2));
1305	>	lock.writeLock().lock();
1306		t1.start();
1307	<	Thread.sleep(SHORT_DELAY_MS);
1308	<	assertTrue(sync.hasQueuedThread(t1));
1307	>	waitForQueuedThread(lock, t1);
1308	>	assertTrue(lock.hasQueuedThread(t1));
1309	>	assertFalse(lock.hasQueuedThread(t2));
1310		t2.start();
1311	<	Thread.sleep(SHORT_DELAY_MS);
1312	<	assertTrue(sync.hasQueuedThread(t1));
1313	<	assertTrue(sync.hasQueuedThread(t2));
1311	>	waitForQueuedThread(lock, t2);
1312	>	assertTrue(lock.hasQueuedThread(t1));
1313	>	assertTrue(lock.hasQueuedThread(t2));
1314		t1.interrupt();
1315	<	Thread.sleep(SHORT_DELAY_MS);
1316	<	assertFalse(sync.hasQueuedThread(t1));
1317	<	assertTrue(sync.hasQueuedThread(t2));
1318	<	sync.writeLock().unlock();
1319	<	Thread.sleep(SHORT_DELAY_MS);
1320	<	assertFalse(sync.hasQueuedThread(t1));
1321	<	Thread.sleep(SHORT_DELAY_MS);
1008	<	assertFalse(sync.hasQueuedThread(t2));
1009	<	awaitTermination(t1, LONG_DELAY_MS);
1010	<	awaitTermination(t2, LONG_DELAY_MS);
1315	>	awaitTermination(t1);
1316	>	assertFalse(lock.hasQueuedThread(t1));
1317	>	assertTrue(lock.hasQueuedThread(t2));
1318	>	lock.writeLock().unlock();
1319	>	awaitTermination(t2);
1320	>	assertFalse(lock.hasQueuedThread(t1));
1321	>	assertFalse(lock.hasQueuedThread(t2));
1322		}
1323
1013	–
1324		/**
1325		* getQueueLength reports number of waiting threads
1326		*/
1327	<	public void testGetQueueLength() throws InterruptedException {
1328	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1327	>	public void testGetQueueLength() { testGetQueueLength(false); }
1328	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
1329	>	public void testGetQueueLength(boolean fair) {
1330	>	final PublicReentrantReadWriteLock lock =
1331	>	new PublicReentrantReadWriteLock(fair);
1332		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1333		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1334		assertEquals(0, lock.getQueueLength());
1335		lock.writeLock().lock();
1336		t1.start();
1337	<	Thread.sleep(SHORT_DELAY_MS);
1337	>	waitForQueuedThread(lock, t1);
1338		assertEquals(1, lock.getQueueLength());
1339		t2.start();
1340	<	Thread.sleep(SHORT_DELAY_MS);
1340	>	waitForQueuedThread(lock, t2);
1341		assertEquals(2, lock.getQueueLength());
1342		t1.interrupt();
1343	<	Thread.sleep(SHORT_DELAY_MS);
1343	>	awaitTermination(t1);
1344		assertEquals(1, lock.getQueueLength());
1345		lock.writeLock().unlock();
1346	<	Thread.sleep(SHORT_DELAY_MS);
1346	>	awaitTermination(t2);
1347		assertEquals(0, lock.getQueueLength());
1035	–	awaitTermination(t1, LONG_DELAY_MS);
1036	–	awaitTermination(t2, LONG_DELAY_MS);
1348		}
1349
1350		/**
1351		* getQueuedThreads includes waiting threads
1352		*/
1353	<	public void testGetQueuedThreads() throws InterruptedException {
1354	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1353	>	public void testGetQueuedThreads() { testGetQueuedThreads(false); }
1354	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
1355	>	public void testGetQueuedThreads(boolean fair) {
1356	>	final PublicReentrantReadWriteLock lock =
1357	>	new PublicReentrantReadWriteLock(fair);
1358		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1359		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1360		assertTrue(lock.getQueuedThreads().isEmpty());
1361		lock.writeLock().lock();
1362		assertTrue(lock.getQueuedThreads().isEmpty());
1363		t1.start();
1364	<	Thread.sleep(SHORT_DELAY_MS);
1364	>	waitForQueuedThread(lock, t1);
1365	>	assertEquals(1, lock.getQueuedThreads().size());
1366		assertTrue(lock.getQueuedThreads().contains(t1));
1367		t2.start();
1368	<	Thread.sleep(SHORT_DELAY_MS);
1368	>	waitForQueuedThread(lock, t2);
1369	>	assertEquals(2, lock.getQueuedThreads().size());
1370		assertTrue(lock.getQueuedThreads().contains(t1));
1371		assertTrue(lock.getQueuedThreads().contains(t2));
1372		t1.interrupt();
1373	<	Thread.sleep(SHORT_DELAY_MS);
1373	>	awaitTermination(t1);
1374		assertFalse(lock.getQueuedThreads().contains(t1));
1375		assertTrue(lock.getQueuedThreads().contains(t2));
1376	+	assertEquals(1, lock.getQueuedThreads().size());
1377		lock.writeLock().unlock();
1378	<	Thread.sleep(SHORT_DELAY_MS);
1378	>	awaitTermination(t2);
1379		assertTrue(lock.getQueuedThreads().isEmpty());
1063	–	awaitTermination(t1, LONG_DELAY_MS);
1064	–	awaitTermination(t2, LONG_DELAY_MS);
1380		}
1381
1382		/**
1383		* hasWaiters throws NPE if null
1384		*/
1385	<	public void testHasWaitersNPE() {
1386	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1385	>	public void testHasWaitersNPE() { testHasWaitersNPE(false); }
1386	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
1387	>	public void testHasWaitersNPE(boolean fair) {
1388	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1389		try {
1390		lock.hasWaiters(null);
1391		shouldThrow();
#	Line 1078 \| Line 1395 \| public class ReentrantReadWriteLockTest
1395		/**
1396		* getWaitQueueLength throws NPE if null
1397		*/
1398	<	public void testGetWaitQueueLengthNPE() {
1399	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1398	>	public void testGetWaitQueueLengthNPE() { testGetWaitQueueLengthNPE(false); }
1399	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
1400	>	public void testGetWaitQueueLengthNPE(boolean fair) {
1401	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1402		try {
1403		lock.getWaitQueueLength(null);
1404		shouldThrow();
1405		} catch (NullPointerException success) {}
1406		}
1407
1089	–
1408		/**
1409		* getWaitingThreads throws NPE if null
1410		*/
1411	<	public void testGetWaitingThreadsNPE() {
1412	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1411	>	public void testGetWaitingThreadsNPE() { testGetWaitingThreadsNPE(false); }
1412	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
1413	>	public void testGetWaitingThreadsNPE(boolean fair) {
1414	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(fair);
1415		try {
1416		lock.getWaitingThreads(null);
1417		shouldThrow();
#	Line 1099 \| Line 1419 \| public class ReentrantReadWriteLockTest
1419		}
1420
1421		/**
1422	<	* hasWaiters throws IAE if not owned
1422	>	* hasWaiters throws IllegalArgumentException if not owned
1423		*/
1424	<	public void testHasWaitersIAE() {
1425	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1424	>	public void testHasWaitersIAE() { testHasWaitersIAE(false); }
1425	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
1426	>	public void testHasWaitersIAE(boolean fair) {
1427	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1428		final Condition c = lock.writeLock().newCondition();
1429	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1429	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1430		try {
1431		lock2.hasWaiters(c);
1432		shouldThrow();
#	Line 1112 \| Line 1434 \| public class ReentrantReadWriteLockTest
1434		}
1435
1436		/**
1437	<	* hasWaiters throws IMSE if not locked
1437	>	* hasWaiters throws IllegalMonitorStateException if not locked
1438		*/
1439	<	public void testHasWaitersIMSE() {
1440	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1439	>	public void testHasWaitersIMSE() { testHasWaitersIMSE(false); }
1440	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
1441	>	public void testHasWaitersIMSE(boolean fair) {
1442	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1443		final Condition c = lock.writeLock().newCondition();
1444		try {
1445		lock.hasWaiters(c);
#	Line 1123 \| Line 1447 \| public class ReentrantReadWriteLockTest
1447		} catch (IllegalMonitorStateException success) {}
1448		}
1449
1126	–
1450		/**
1451	<	* getWaitQueueLength throws IAE if not owned
1451	>	* getWaitQueueLength throws IllegalArgumentException if not owned
1452		*/
1453	<	public void testGetWaitQueueLengthIAE() {
1454	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1453	>	public void testGetWaitQueueLengthIAE() { testGetWaitQueueLengthIAE(false); }
1454	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
1455	>	public void testGetWaitQueueLengthIAE(boolean fair) {
1456	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1457		final Condition c = lock.writeLock().newCondition();
1458	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1458	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1459		try {
1460		lock2.getWaitQueueLength(c);
1461		shouldThrow();
#	Line 1138 \| Line 1463 \| public class ReentrantReadWriteLockTest
1463		}
1464
1465		/**
1466	<	* getWaitQueueLength throws IMSE if not locked
1466	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
1467		*/
1468	<	public void testGetWaitQueueLengthIMSE() {
1469	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1468	>	public void testGetWaitQueueLengthIMSE() { testGetWaitQueueLengthIMSE(false); }
1469	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
1470	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
1471	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1472		final Condition c = lock.writeLock().newCondition();
1473		try {
1474		lock.getWaitQueueLength(c);
#	Line 1149 \| Line 1476 \| public class ReentrantReadWriteLockTest
1476		} catch (IllegalMonitorStateException success) {}
1477		}
1478
1152	–
1479		/**
1480	<	* getWaitingThreads throws IAE if not owned
1480	>	* getWaitingThreads throws IllegalArgumentException if not owned
1481		*/
1482	<	public void testGetWaitingThreadsIAE() {
1483	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1482	>	public void testGetWaitingThreadsIAE() { testGetWaitingThreadsIAE(false); }
1483	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
1484	>	public void testGetWaitingThreadsIAE(boolean fair) {
1485	>	final PublicReentrantReadWriteLock lock =
1486	>	new PublicReentrantReadWriteLock(fair);
1487		final Condition c = lock.writeLock().newCondition();
1488	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1488	>	final PublicReentrantReadWriteLock lock2 =
1489	>	new PublicReentrantReadWriteLock(fair);
1490		try {
1491		lock2.getWaitingThreads(c);
1492		shouldThrow();
#	Line 1164 \| Line 1494 \| public class ReentrantReadWriteLockTest
1494		}
1495
1496		/**
1497	<	* getWaitingThreads throws IMSE if not locked
1497	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
1498		*/
1499	<	public void testGetWaitingThreadsIMSE() {
1500	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1499	>	public void testGetWaitingThreadsIMSE() { testGetWaitingThreadsIMSE(false); }
1500	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
1501	>	public void testGetWaitingThreadsIMSE(boolean fair) {
1502	>	final PublicReentrantReadWriteLock lock =
1503	>	new PublicReentrantReadWriteLock(fair);
1504		final Condition c = lock.writeLock().newCondition();
1505		try {
1506		lock.getWaitingThreads(c);
#	Line 1175 \| Line 1508 \| public class ReentrantReadWriteLockTest
1508		} catch (IllegalMonitorStateException success) {}
1509		}
1510
1178	–
1511		/**
1512		* hasWaiters returns true when a thread is waiting, else false
1513		*/
1514	<	public void testHasWaiters() throws InterruptedException {
1515	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1514	>	public void testHasWaiters() { testHasWaiters(false); }
1515	>	public void testHasWaiters_fair() { testHasWaiters(true); }
1516	>	public void testHasWaiters(boolean fair) {
1517	>	final PublicReentrantReadWriteLock lock =
1518	>	new PublicReentrantReadWriteLock(fair);
1519		final Condition c = lock.writeLock().newCondition();
1520	+	final CountDownLatch locked = new CountDownLatch(1);
1521		Thread t = newStartedThread(new CheckedRunnable() {
1522		public void realRun() throws InterruptedException {
1523		lock.writeLock().lock();
1524	+	assertHasNoWaiters(lock, c);
1525		assertFalse(lock.hasWaiters(c));
1526	<	assertEquals(0, lock.getWaitQueueLength(c));
1526	>	locked.countDown();
1527		c.await();
1528	+	assertHasNoWaiters(lock, c);
1529	+	assertFalse(lock.hasWaiters(c));
1530		lock.writeLock().unlock();
1531		}});
1532
1533	<	Thread.sleep(SHORT_DELAY_MS);
1533	>	await(locked);
1534		lock.writeLock().lock();
1535	+	assertHasWaiters(lock, c, t);
1536		assertTrue(lock.hasWaiters(c));
1197	–	assertEquals(1, lock.getWaitQueueLength(c));
1537		c.signal();
1538	<	lock.writeLock().unlock();
1200	<	Thread.sleep(SHORT_DELAY_MS);
1201	<	lock.writeLock().lock();
1538	>	assertHasNoWaiters(lock, c);
1539		assertFalse(lock.hasWaiters(c));
1203	–	assertEquals(0, lock.getWaitQueueLength(c));
1540		lock.writeLock().unlock();
1541	<	awaitTermination(t, LONG_DELAY_MS);
1541	>	awaitTermination(t);
1542	>	assertHasNoWaiters(lock, c);
1543		}
1544
1545		/**
1546		* getWaitQueueLength returns number of waiting threads
1547		*/
1548	<	public void testGetWaitQueueLength() throws InterruptedException {
1549	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1548	>	public void testGetWaitQueueLength() { testGetWaitQueueLength(false); }
1549	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
1550	>	public void testGetWaitQueueLength(boolean fair) {
1551	>	final PublicReentrantReadWriteLock lock =
1552	>	new PublicReentrantReadWriteLock(fair);
1553		final Condition c = lock.writeLock().newCondition();
1554	+	final CountDownLatch locked = new CountDownLatch(1);
1555		Thread t = newStartedThread(new CheckedRunnable() {
1556		public void realRun() throws InterruptedException {
1557		lock.writeLock().lock();
1217	–	assertFalse(lock.hasWaiters(c));
1558		assertEquals(0, lock.getWaitQueueLength(c));
1559	+	locked.countDown();
1560		c.await();
1561		lock.writeLock().unlock();
1562		}});
1563
1564	<	Thread.sleep(SHORT_DELAY_MS);
1564	>	await(locked);
1565		lock.writeLock().lock();
1566	<	assertTrue(lock.hasWaiters(c));
1566	>	assertHasWaiters(lock, c, t);
1567		assertEquals(1, lock.getWaitQueueLength(c));
1568		c.signal();
1569	<	lock.writeLock().unlock();
1229	<	Thread.sleep(SHORT_DELAY_MS);
1230	<	lock.writeLock().lock();
1231	<	assertFalse(lock.hasWaiters(c));
1569	>	assertHasNoWaiters(lock, c);
1570		assertEquals(0, lock.getWaitQueueLength(c));
1571		lock.writeLock().unlock();
1572	<	awaitTermination(t, LONG_DELAY_MS);
1572	>	awaitTermination(t);
1573		}
1574
1237	–
1575		/**
1576		* getWaitingThreads returns only and all waiting threads
1577		*/
1578	<	public void testGetWaitingThreads() throws InterruptedException {
1579	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1578	>	public void testGetWaitingThreads() { testGetWaitingThreads(false); }
1579	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
1580	>	public void testGetWaitingThreads(boolean fair) {
1581	>	final PublicReentrantReadWriteLock lock =
1582	>	new PublicReentrantReadWriteLock(fair);
1583		final Condition c = lock.writeLock().newCondition();
1584	+	final CountDownLatch locked1 = new CountDownLatch(1);
1585	+	final CountDownLatch locked2 = new CountDownLatch(1);
1586		Thread t1 = new Thread(new CheckedRunnable() {
1587		public void realRun() throws InterruptedException {
1588		lock.writeLock().lock();
1589		assertTrue(lock.getWaitingThreads(c).isEmpty());
1590	+	locked1.countDown();
1591		c.await();
1592		lock.writeLock().unlock();
1593		}});
#	Line 1253 \| Line 1596 \| public class ReentrantReadWriteLockTest
1596		public void realRun() throws InterruptedException {
1597		lock.writeLock().lock();
1598		assertFalse(lock.getWaitingThreads(c).isEmpty());
1599	+	locked2.countDown();
1600		c.await();
1601		lock.writeLock().unlock();
1602		}});
#	Line 1260 \| Line 1604 \| public class ReentrantReadWriteLockTest
1604		lock.writeLock().lock();
1605		assertTrue(lock.getWaitingThreads(c).isEmpty());
1606		lock.writeLock().unlock();
1607	+
1608		t1.start();
1609	<	Thread.sleep(SHORT_DELAY_MS);
1609	>	await(locked1);
1610		t2.start();
1611	<	Thread.sleep(SHORT_DELAY_MS);
1611	>	await(locked2);
1612	>
1613		lock.writeLock().lock();
1614		assertTrue(lock.hasWaiters(c));
1615		assertTrue(lock.getWaitingThreads(c).contains(t1));
1616		assertTrue(lock.getWaitingThreads(c).contains(t2));
1617	+	assertEquals(2, lock.getWaitingThreads(c).size());
1618		c.signalAll();
1619	+	assertHasNoWaiters(lock, c);
1620		lock.writeLock().unlock();
1621	<	Thread.sleep(SHORT_DELAY_MS);
1622	<	lock.writeLock().lock();
1623	<	assertFalse(lock.hasWaiters(c));
1624	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1625	<	lock.writeLock().unlock();
1278	<	awaitTermination(t1, LONG_DELAY_MS);
1279	<	awaitTermination(t2, LONG_DELAY_MS);
1621	>
1622	>	awaitTermination(t1);
1623	>	awaitTermination(t2);
1624	>
1625	>	assertHasNoWaiters(lock, c);
1626		}
1627
1628		/**
1629		* toString indicates current lock state
1630		*/
1631	<	public void testToString() {
1632	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1633	<	String us = lock.toString();
1634	<	assertTrue(us.indexOf("Write locks = 0") >= 0);
1635	<	assertTrue(us.indexOf("Read locks = 0") >= 0);
1636	<	lock.writeLock().lock();
1637	<	String ws = lock.toString();
1638	<	assertTrue(ws.indexOf("Write locks = 1") >= 0);
1639	<	assertTrue(ws.indexOf("Read locks = 0") >= 0);
1631	>	public void testToString() { testToString(false); }
1632	>	public void testToString_fair() { testToString(true); }
1633	>	public void testToString(boolean fair) {
1634	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1635	>	assertTrue(lock.toString().contains("Write locks = 0"));
1636	>	assertTrue(lock.toString().contains("Read locks = 0"));
1637	>	lock.writeLock().lock();
1638	>	assertTrue(lock.toString().contains("Write locks = 1"));
1639	>	assertTrue(lock.toString().contains("Read locks = 0"));
1640		lock.writeLock().unlock();
1641		lock.readLock().lock();
1642		lock.readLock().lock();
1643	<	String rs = lock.toString();
1644	<	assertTrue(rs.indexOf("Write locks = 0") >= 0);
1299	<	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1643	>	assertTrue(lock.toString().contains("Write locks = 0"));
1644	>	assertTrue(lock.toString().contains("Read locks = 2"));
1645		}
1646
1647		/**
1648		* readLock.toString indicates current lock state
1649		*/
1650	<	public void testReadLockToString() {
1651	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1652	<	String us = lock.readLock().toString();
1653	<	assertTrue(us.indexOf("Read locks = 0") >= 0);
1650	>	public void testReadLockToString() { testReadLockToString(false); }
1651	>	public void testReadLockToString_fair() { testReadLockToString(true); }
1652	>	public void testReadLockToString(boolean fair) {
1653	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1654	>	assertTrue(lock.readLock().toString().contains("Read locks = 0"));
1655		lock.readLock().lock();
1656		lock.readLock().lock();
1657	<	String rs = lock.readLock().toString();
1312	<	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1657	>	assertTrue(lock.readLock().toString().contains("Read locks = 2"));
1658		}
1659
1660		/**
1661		* writeLock.toString indicates current lock state
1662		*/
1663	<	public void testWriteLockToString() {
1664	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1665	<	String us = lock.writeLock().toString();
1666	<	assertTrue(us.indexOf("Unlocked") >= 0);
1663	>	public void testWriteLockToString() { testWriteLockToString(false); }
1664	>	public void testWriteLockToString_fair() { testWriteLockToString(true); }
1665	>	public void testWriteLockToString(boolean fair) {
1666	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1667	>	assertTrue(lock.writeLock().toString().contains("Unlocked"));
1668		lock.writeLock().lock();
1669	<	String ls = lock.writeLock().toString();
1670	<	assertTrue(ls.indexOf("Locked") >= 0);
1669	>	assertTrue(lock.writeLock().toString().contains("Locked"));
1670	>	lock.writeLock().unlock();
1671	>	assertTrue(lock.writeLock().toString().contains("Unlocked"));
1672		}
1673
1674		}

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Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents): Revision 1.54 by jsr166, Mon May 2 01:07:15 2011 UTC vs. Revision 1.74 by jsr166, Sun May 24 01:42:14 2015 UTC

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Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.54 by jsr166, Mon May 2 01:07:15 2011 UTC vs.
Revision 1.74 by jsr166, Sun May 24 01:42:14 2015 UTC