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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.32 by jsr166, Tue Nov 17 14:18:28 2009 UTC vs.
Revision 1.55 by jsr166, Mon May 2 01:15:26 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
#	Line 9 | Line 9
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.io.*;
14		import java.util.*;
15
16		public class ReentrantReadWriteLockTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20		public static Test suite() {
21	<	return new TestSuite(ReentrantReadWriteLockTest.class);
21	>	return new TestSuite(ReentrantReadWriteLockTest.class);
22		}
23
24		/**
#	Line 58 | Line 59 | public class ReentrantReadWriteLockTest
59		}
60
61		/**
62	+	* Releases write lock, checking that it had a hold count of 1.
63	+	*/
64	+	void releaseWriteLock(ReentrantReadWriteLock lock) {
65	+	ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock();
66	+	assertTrue(writeLock.isHeldByCurrentThread());
67	+	writeLock.unlock();
68	+	assertFalse(writeLock.isHeldByCurrentThread());
69	+	}
70	+
71	+	/**
72		* Constructor sets given fairness, and is in unlocked state
73		*/
74		public void testConstructor() {
75	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
75	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
76		assertFalse(rl.isFair());
77		assertFalse(rl.isWriteLocked());
78		assertEquals(0, rl.getReadLockCount());
79	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
79	>	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
80		assertTrue(r2.isFair());
81		assertFalse(r2.isWriteLocked());
82		assertEquals(0, r2.getReadLockCount());
83	<	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
83	>	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
84		assertFalse(r3.isFair());
85		assertFalse(r3.isWriteLocked());
86		assertEquals(0, r3.getReadLockCount());
#	Line 79 | Line 90 | public class ReentrantReadWriteLockTest
90		* write-locking and read-locking an unlocked lock succeed
91		*/
92		public void testLock() {
93	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
93	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
94		rl.writeLock().lock();
95		assertTrue(rl.isWriteLocked());
96		assertTrue(rl.isWriteLockedByCurrentThread());
#	Line 105 | Line 116 | public class ReentrantReadWriteLockTest
116		* locking an unlocked fair lock succeeds
117		*/
118		public void testFairLock() {
119	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
119	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
120		rl.writeLock().lock();
121		assertTrue(rl.isWriteLocked());
122		assertTrue(rl.isWriteLockedByCurrentThread());
#	Line 130 | Line 141 | public class ReentrantReadWriteLockTest
141		* getWriteHoldCount returns number of recursive holds
142		*/
143		public void testGetWriteHoldCount() {
144	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
145	<	for (int i = 1; i <= SIZE; i++) {
146	<	lock.writeLock().lock();
147	<	assertEquals(i,lock.getWriteHoldCount());
148	<	}
149	<	for (int i = SIZE; i > 0; i--) {
150	<	lock.writeLock().unlock();
151	<	assertEquals(i-1,lock.getWriteHoldCount());
152	<	}
144	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
145	>	for (int i = 1; i <= SIZE; i++) {
146	>	lock.writeLock().lock();
147	>	assertEquals(i,lock.getWriteHoldCount());
148	>	}
149	>	for (int i = SIZE; i > 0; i--) {
150	>	lock.writeLock().unlock();
151	>	assertEquals(i-1,lock.getWriteHoldCount());
152	>	}
153		}
154
155		/**
156		* WriteLock.getHoldCount returns number of recursive holds
157		*/
158		public void testGetHoldCount() {
159	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
160	<	for (int i = 1; i <= SIZE; i++) {
161	<	lock.writeLock().lock();
162	<	assertEquals(i,lock.writeLock().getHoldCount());
163	<	}
164	<	for (int i = SIZE; i > 0; i--) {
165	<	lock.writeLock().unlock();
166	<	assertEquals(i-1,lock.writeLock().getHoldCount());
167	<	}
159	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
160	>	for (int i = 1; i <= SIZE; i++) {
161	>	lock.writeLock().lock();
162	>	assertEquals(i,lock.writeLock().getHoldCount());
163	>	}
164	>	for (int i = SIZE; i > 0; i--) {
165	>	lock.writeLock().unlock();
166	>	assertEquals(i-1,lock.writeLock().getHoldCount());
167	>	}
168		}
169
170		/**
171		* getReadHoldCount returns number of recursive holds
172		*/
173		public void testGetReadHoldCount() {
174	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
175	<	for (int i = 1; i <= SIZE; i++) {
176	<	lock.readLock().lock();
177	<	assertEquals(i,lock.getReadHoldCount());
178	<	}
179	<	for (int i = SIZE; i > 0; i--) {
180	<	lock.readLock().unlock();
181	<	assertEquals(i-1,lock.getReadHoldCount());
182	<	}
174	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
175	>	for (int i = 1; i <= SIZE; i++) {
176	>	lock.readLock().lock();
177	>	assertEquals(i,lock.getReadHoldCount());
178	>	}
179	>	for (int i = SIZE; i > 0; i--) {
180	>	lock.readLock().unlock();
181	>	assertEquals(i-1,lock.getReadHoldCount());
182	>	}
183		}
184
185
#	Line 176 | Line 187 | public class ReentrantReadWriteLockTest
187		* write-unlocking an unlocked lock throws IllegalMonitorStateException
188		*/
189		public void testUnlock_IllegalMonitorStateException() {
190	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
191	<	try {
192	<	rl.writeLock().unlock();
193	<	shouldThrow();
194	<	} catch (IllegalMonitorStateException success) {}
190	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
191	>	try {
192	>	rl.writeLock().unlock();
193	>	shouldThrow();
194	>	} catch (IllegalMonitorStateException success) {}
195		}
196
197
#	Line 188 | Line 199 | public class ReentrantReadWriteLockTest
199		* write-lockInterruptibly is interruptible
200		*/
201		public void testWriteLockInterruptibly_Interrupted() throws Exception {
202	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
192	<	Thread t = new Thread(new Runnable() {
193	<	public void run() {
194	<	try {
195	<	lock.writeLock().lockInterruptibly();
196	<	lock.writeLock().unlock();
197	<	lock.writeLock().lockInterruptibly();
198	<	lock.writeLock().unlock();
199	<	} catch (InterruptedException success) {}
200	<	}
201	<	});
202	<
202	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
203		lock.writeLock().lock();
204	<	t.start();
204	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
205	>	public void realRun() throws InterruptedException {
206	>	lock.writeLock().lockInterruptibly();
207	>	}});
208	>
209		Thread.sleep(SHORT_DELAY_MS);
210		t.interrupt();
211	<	Thread.sleep(SHORT_DELAY_MS);
212	<	lock.writeLock().unlock();
209	<	t.join();
211	>	awaitTermination(t, LONG_DELAY_MS);
212	>	releaseWriteLock(lock);
213		}
214
215		/**
216		* timed write-tryLock is interruptible
217		*/
218		public void testWriteTryLock_Interrupted() throws InterruptedException {
219	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
220	<	lock.writeLock().lock();
221	<	Thread t = new Thread(new Runnable() {
222	<	public void run() {
223	<	try {
224	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
222	<	} catch (InterruptedException success) {}
223	<	}
224	<	});
219	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
220	>	lock.writeLock().lock();
221	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
222	>	public void realRun() throws InterruptedException {
223	>	lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS);
224	>	}});
225
226	<	t.start();
226	>	Thread.sleep(SHORT_DELAY_MS);
227		t.interrupt();
228	<	lock.writeLock().unlock();
229	<	t.join();
228	>	awaitTermination(t, LONG_DELAY_MS);
229	>	releaseWriteLock(lock);
230		}
231
232		/**
233		* read-lockInterruptibly is interruptible
234		*/
235		public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
236	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
237	<	lock.writeLock().lock();
238	<	Thread t = new Thread(new Runnable() {
239	<	public void run() {
240	<	try {
241	<	lock.readLock().lockInterruptibly();
242	<	} catch (InterruptedException success) {}
243	<	}
244	<	});
236	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
237	>	lock.writeLock().lock();
238	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
239	>	public void realRun() throws InterruptedException {
240	>	lock.readLock().lockInterruptibly();
241	>	}});
242
246	–	t.start();
243		Thread.sleep(SHORT_DELAY_MS);
244		t.interrupt();
245	<	Thread.sleep(SHORT_DELAY_MS);
246	<	lock.writeLock().unlock();
251	<	t.join();
245	>	awaitTermination(t, LONG_DELAY_MS);
246	>	releaseWriteLock(lock);
247		}
248
249		/**
250		* timed read-tryLock is interruptible
251		*/
252		public void testReadTryLock_Interrupted() throws InterruptedException {
253	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
254	<	lock.writeLock().lock();
255	<	Thread t = new Thread(new Runnable() {
256	<	public void run() {
257	<	try {
258	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
264	<	threadShouldThrow();
265	<	} catch (InterruptedException success) {}
266	<	}
267	<	});
253	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
254	>	lock.writeLock().lock();
255	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
256	>	public void realRun() throws InterruptedException {
257	>	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
258	>	}});
259
260	<	t.start();
260	>	Thread.sleep(SHORT_DELAY_MS);
261		t.interrupt();
262	<	t.join();
262	>	awaitTermination(t, LONG_DELAY_MS);
263	>	releaseWriteLock(lock);
264		}
265
266
#	Line 276 | Line 268 | public class ReentrantReadWriteLockTest
268		* write-tryLock fails if locked
269		*/
270		public void testWriteTryLockWhenLocked() throws InterruptedException {
271	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
272	<	lock.writeLock().lock();
273	<	Thread t = new Thread(new Runnable() {
274	<	public void run() {
275	<	threadAssertFalse(lock.writeLock().tryLock());
276	<	}
285	<	});
271	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
272	>	lock.writeLock().lock();
273	>	Thread t = newStartedThread(new CheckedRunnable() {
274	>	public void realRun() {
275	>	assertFalse(lock.writeLock().tryLock());
276	>	}});
277
278	<	t.start();
279	<	t.join();
289	<	lock.writeLock().unlock();
278	>	awaitTermination(t, LONG_DELAY_MS);
279	>	releaseWriteLock(lock);
280		}
281
282		/**
283		* read-tryLock fails if locked
284		*/
285		public void testReadTryLockWhenLocked() throws InterruptedException {
286	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
287	<	lock.writeLock().lock();
288	<	Thread t = new Thread(new Runnable() {
289	<	public void run() {
290	<	threadAssertFalse(lock.readLock().tryLock());
291	<	}
302	<	});
286	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
287	>	lock.writeLock().lock();
288	>	Thread t = newStartedThread(new CheckedRunnable() {
289	>	public void realRun() {
290	>	assertFalse(lock.readLock().tryLock());
291	>	}});
292
293	<	t.start();
294	<	t.join();
306	<	lock.writeLock().unlock();
293	>	awaitTermination(t, LONG_DELAY_MS);
294	>	releaseWriteLock(lock);
295		}
296
297		/**
298		* Multiple threads can hold a read lock when not write-locked
299		*/
300		public void testMultipleReadLocks() throws InterruptedException {
301	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
302	<	lock.readLock().lock();
303	<	Thread t = new Thread(new Runnable() {
304	<	public void run() {
305	<	threadAssertTrue(lock.readLock().tryLock());
306	<	lock.readLock().unlock();
307	<	}
320	<	});
301	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
302	>	lock.readLock().lock();
303	>	Thread t = newStartedThread(new CheckedRunnable() {
304	>	public void realRun() {
305	>	assertTrue(lock.readLock().tryLock());
306	>	lock.readLock().unlock();
307	>	}});
308
309	<	t.start();
323	<	t.join();
309	>	awaitTermination(t, LONG_DELAY_MS);
310		lock.readLock().unlock();
311		}
312
#	Line 328 | Line 314 | public class ReentrantReadWriteLockTest
314		* A writelock succeeds after reading threads unlock
315		*/
316		public void testWriteAfterMultipleReadLocks() throws InterruptedException {
317	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
318	<	lock.readLock().lock();
319	<	Thread t1 = new Thread(new Runnable() {
320	<	public void run() {
321	<	lock.readLock().lock();
322	<	lock.readLock().unlock();
323	<	}
324	<	});
325	<	Thread t2 = new Thread(new Runnable() {
326	<	public void run() {
327	<	lock.writeLock().lock();
328	<	lock.writeLock().unlock();
343	<	}
344	<	});
317	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
318	>	lock.readLock().lock();
319	>	Thread t1 = newStartedThread(new CheckedRunnable() {
320	>	public void realRun() {
321	>	lock.readLock().lock();
322	>	lock.readLock().unlock();
323	>	}});
324	>	Thread t2 = newStartedThread(new CheckedRunnable() {
325	>	public void realRun() {
326	>	lock.writeLock().lock();
327	>	lock.writeLock().unlock();
328	>	}});
329
346	–	t1.start();
347	–	t2.start();
330		Thread.sleep(SHORT_DELAY_MS);
331		lock.readLock().unlock();
332	<	t1.join(MEDIUM_DELAY_MS);
333	<	t2.join(MEDIUM_DELAY_MS);
352	<	assertTrue(!t1.isAlive());
353	<	assertTrue(!t2.isAlive());
332	>	awaitTermination(t1, LONG_DELAY_MS);
333	>	awaitTermination(t2, LONG_DELAY_MS);
334		}
335
336		/**
337		* Readlocks succeed after a writing thread unlocks
338		*/
339		public void testReadAfterWriteLock() throws InterruptedException {
340	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
341	<	lock.writeLock().lock();
342	<	Thread t1 = new Thread(new Runnable() {
343	<	public void run() {
344	<	lock.readLock().lock();
345	<	lock.readLock().unlock();
346	<	}
347	<	});
348	<	Thread t2 = new Thread(new Runnable() {
349	<	public void run() {
350	<	lock.readLock().lock();
351	<	lock.readLock().unlock();
352	<	}
353	<	});
354	<
355	<	t1.start();
356	<	t2.start();
357	<	Thread.sleep(SHORT_DELAY_MS);
358	<	lock.writeLock().unlock();
379	<	t1.join(MEDIUM_DELAY_MS);
380	<	t2.join(MEDIUM_DELAY_MS);
381	<	assertTrue(!t1.isAlive());
382	<	assertTrue(!t2.isAlive());
340	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
341	>	lock.writeLock().lock();
342	>	Thread t1 = newStartedThread(new CheckedRunnable() {
343	>	public void realRun() {
344	>	lock.readLock().lock();
345	>	lock.readLock().unlock();
346	>	}});
347	>	Thread t2 = newStartedThread(new CheckedRunnable() {
348	>	public void realRun() {
349	>	lock.readLock().lock();
350	>	lock.readLock().unlock();
351	>	}});
352	>
353	>	Thread.sleep(SHORT_DELAY_MS);
354	>	assertTrue(t1.isAlive());
355	>	assertTrue(t2.isAlive());
356	>	releaseWriteLock(lock);
357	>	awaitTermination(t1, LONG_DELAY_MS);
358	>	awaitTermination(t2, LONG_DELAY_MS);
359		}
360
361		/**
362		* Read trylock succeeds if write locked by current thread
363		*/
364		public void testReadHoldingWriteLock() {
365	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
366	<	lock.writeLock().lock();
365	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
366	>	lock.writeLock().lock();
367		assertTrue(lock.readLock().tryLock());
368		lock.readLock().unlock();
369		lock.writeLock().unlock();
#	Line 398 | Line 374 | public class ReentrantReadWriteLockTest
374		* other threads are waiting for readlock
375		*/
376		public void testReadHoldingWriteLock2() throws InterruptedException {
377	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
378	<	lock.writeLock().lock();
379	<	Thread t1 = new Thread(new Runnable() {
380	<	public void run() {
381	<	lock.readLock().lock();
382	<	lock.readLock().unlock();
383	<	}
384	<	});
385	<	Thread t2 = new Thread(new Runnable() {
386	<	public void run() {
387	<	lock.readLock().lock();
388	<	lock.readLock().unlock();
413	<	}
414	<	});
377	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
378	>	lock.writeLock().lock();
379	>	Thread t1 = newStartedThread(new CheckedRunnable() {
380	>	public void realRun() {
381	>	lock.readLock().lock();
382	>	lock.readLock().unlock();
383	>	}});
384	>	Thread t2 = newStartedThread(new CheckedRunnable() {
385	>	public void realRun() {
386	>	lock.readLock().lock();
387	>	lock.readLock().unlock();
388	>	}});
389
416	–	t1.start();
417	–	t2.start();
390		lock.readLock().lock();
391		lock.readLock().unlock();
392		Thread.sleep(SHORT_DELAY_MS);
393		lock.readLock().lock();
394		lock.readLock().unlock();
395		lock.writeLock().unlock();
396	<	t1.join(MEDIUM_DELAY_MS);
397	<	t2.join(MEDIUM_DELAY_MS);
426	<	assertTrue(!t1.isAlive());
427	<	assertTrue(!t2.isAlive());
396	>	awaitTermination(t1, LONG_DELAY_MS);
397	>	awaitTermination(t2, LONG_DELAY_MS);
398		}
399
400		/**
401	<	*  Read lock succeeds if write locked by current thread even if
401	>	* Read lock succeeds if write locked by current thread even if
402		* other threads are waiting for writelock
403		*/
404		public void testReadHoldingWriteLock3() throws InterruptedException {
405	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
406	<	lock.writeLock().lock();
407	<	Thread t1 = new Thread(new Runnable() {
408	<	public void run() {
409	<	lock.writeLock().lock();
410	<	lock.writeLock().unlock();
411	<	}
412	<	});
413	<	Thread t2 = new Thread(new Runnable() {
414	<	public void run() {
415	<	lock.writeLock().lock();
416	<	lock.writeLock().unlock();
447	<	}
448	<	});
405	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
406	>	lock.writeLock().lock();
407	>	Thread t1 = newStartedThread(new CheckedRunnable() {
408	>	public void realRun() {
409	>	lock.writeLock().lock();
410	>	lock.writeLock().unlock();
411	>	}});
412	>	Thread t2 = newStartedThread(new CheckedRunnable() {
413	>	public void realRun() {
414	>	lock.writeLock().lock();
415	>	lock.writeLock().unlock();
416	>	}});
417
450	–	t1.start();
451	–	t2.start();
418		lock.readLock().lock();
419		lock.readLock().unlock();
420		Thread.sleep(SHORT_DELAY_MS);
421		lock.readLock().lock();
422		lock.readLock().unlock();
423		lock.writeLock().unlock();
424	<	t1.join(MEDIUM_DELAY_MS);
425	<	t2.join(MEDIUM_DELAY_MS);
460	<	assertTrue(!t1.isAlive());
461	<	assertTrue(!t2.isAlive());
424	>	awaitTermination(t1, LONG_DELAY_MS);
425	>	awaitTermination(t2, LONG_DELAY_MS);
426		}
427
428
429		/**
430	<	*  Write lock succeeds if write locked by current thread even if
430	>	* Write lock succeeds if write locked by current thread even if
431		* other threads are waiting for writelock
432		*/
433		public void testWriteHoldingWriteLock4() throws InterruptedException {
434	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
435	<	lock.writeLock().lock();
436	<	Thread t1 = new Thread(new Runnable() {
437	<	public void run() {
438	<	lock.writeLock().lock();
439	<	lock.writeLock().unlock();
440	<	}
441	<	});
442	<	Thread t2 = new Thread(new Runnable() {
443	<	public void run() {
444	<	lock.writeLock().lock();
445	<	lock.writeLock().unlock();
482	<	}
483	<	});
434	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
435	>	lock.writeLock().lock();
436	>	Thread t1 = newStartedThread(new CheckedRunnable() {
437	>	public void realRun() {
438	>	lock.writeLock().lock();
439	>	lock.writeLock().unlock();
440	>	}});
441	>	Thread t2 = newStartedThread(new CheckedRunnable() {
442	>	public void realRun() {
443	>	lock.writeLock().lock();
444	>	lock.writeLock().unlock();
445	>	}});
446
485	–	t1.start();
486	–	t2.start();
447		lock.writeLock().lock();
448		lock.writeLock().unlock();
449		Thread.sleep(SHORT_DELAY_MS);
450		lock.writeLock().lock();
451		lock.writeLock().unlock();
452		lock.writeLock().unlock();
453	<	t1.join(MEDIUM_DELAY_MS);
454	<	t2.join(MEDIUM_DELAY_MS);
495	<	assertTrue(!t1.isAlive());
496	<	assertTrue(!t2.isAlive());
453	>	awaitTermination(t1, LONG_DELAY_MS);
454	>	awaitTermination(t2, LONG_DELAY_MS);
455		}
456
457
#	Line 501 | Line 459 | public class ReentrantReadWriteLockTest
459		* Fair Read trylock succeeds if write locked by current thread
460		*/
461		public void testReadHoldingWriteLockFair() {
462	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
463	<	lock.writeLock().lock();
462	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
463	>	lock.writeLock().lock();
464		assertTrue(lock.readLock().tryLock());
465		lock.readLock().unlock();
466		lock.writeLock().unlock();
#	Line 513 | Line 471 | public class ReentrantReadWriteLockTest
471		* other threads are waiting for readlock
472		*/
473		public void testReadHoldingWriteLockFair2() throws InterruptedException {
474	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
475	<	lock.writeLock().lock();
476	<	Thread t1 = new Thread(new Runnable() {
477	<	public void run() {
478	<	lock.readLock().lock();
479	<	lock.readLock().unlock();
480	<	}
481	<	});
482	<	Thread t2 = new Thread(new Runnable() {
483	<	public void run() {
484	<	lock.readLock().lock();
485	<	lock.readLock().unlock();
528	<	}
529	<	});
474	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
475	>	lock.writeLock().lock();
476	>	Thread t1 = newStartedThread(new CheckedRunnable() {
477	>	public void realRun() {
478	>	lock.readLock().lock();
479	>	lock.readLock().unlock();
480	>	}});
481	>	Thread t2 = newStartedThread(new CheckedRunnable() {
482	>	public void realRun() {
483	>	lock.readLock().lock();
484	>	lock.readLock().unlock();
485	>	}});
486
531	–	t1.start();
532	–	t2.start();
487		lock.readLock().lock();
488		lock.readLock().unlock();
489		Thread.sleep(SHORT_DELAY_MS);
490		lock.readLock().lock();
491		lock.readLock().unlock();
492		lock.writeLock().unlock();
493	<	t1.join(MEDIUM_DELAY_MS);
494	<	t2.join(MEDIUM_DELAY_MS);
541	<	assertTrue(!t1.isAlive());
542	<	assertTrue(!t2.isAlive());
493	>	awaitTermination(t1, LONG_DELAY_MS);
494	>	awaitTermination(t2, LONG_DELAY_MS);
495		}
496
497
#	Line 548 | Line 500 | public class ReentrantReadWriteLockTest
500		* other threads are waiting for writelock
501		*/
502		public void testReadHoldingWriteLockFair3() throws InterruptedException {
503	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
504	<	lock.writeLock().lock();
505	<	Thread t1 = new Thread(new Runnable() {
506	<	public void run() {
507	<	lock.writeLock().lock();
508	<	lock.writeLock().unlock();
509	<	}
510	<	});
511	<	Thread t2 = new Thread(new Runnable() {
512	<	public void run() {
513	<	lock.writeLock().lock();
514	<	lock.writeLock().unlock();
563	<	}
564	<	});
503	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
504	>	lock.writeLock().lock();
505	>	Thread t1 = newStartedThread(new CheckedRunnable() {
506	>	public void realRun() {
507	>	lock.writeLock().lock();
508	>	lock.writeLock().unlock();
509	>	}});
510	>	Thread t2 = newStartedThread(new CheckedRunnable() {
511	>	public void realRun() {
512	>	lock.writeLock().lock();
513	>	lock.writeLock().unlock();
514	>	}});
515
566	–	t1.start();
567	–	t2.start();
516		lock.readLock().lock();
517		lock.readLock().unlock();
518		Thread.sleep(SHORT_DELAY_MS);
519		lock.readLock().lock();
520		lock.readLock().unlock();
521		lock.writeLock().unlock();
522	<	t1.join(MEDIUM_DELAY_MS);
523	<	t2.join(MEDIUM_DELAY_MS);
576	<	assertTrue(!t1.isAlive());
577	<	assertTrue(!t2.isAlive());
522	>	awaitTermination(t1, LONG_DELAY_MS);
523	>	awaitTermination(t2, LONG_DELAY_MS);
524		}
525
526
#	Line 583 | Line 529 | public class ReentrantReadWriteLockTest
529		* other threads are waiting for writelock
530		*/
531		public void testWriteHoldingWriteLockFair4() throws InterruptedException {
532	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
533	<	lock.writeLock().lock();
534	<	Thread t1 = new Thread(new Runnable() {
535	<	public void run() {
536	<	lock.writeLock().lock();
537	<	lock.writeLock().unlock();
538	<	}
539	<	});
540	<	Thread t2 = new Thread(new Runnable() {
541	<	public void run() {
542	<	lock.writeLock().lock();
543	<	lock.writeLock().unlock();
598	<	}
599	<	});
532	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
533	>	lock.writeLock().lock();
534	>	Thread t1 = newStartedThread(new CheckedRunnable() {
535	>	public void realRun() {
536	>	lock.writeLock().lock();
537	>	lock.writeLock().unlock();
538	>	}});
539	>	Thread t2 = newStartedThread(new CheckedRunnable() {
540	>	public void realRun() {
541	>	lock.writeLock().lock();
542	>	lock.writeLock().unlock();
543	>	}});
544
601	–	t1.start();
602	–	t2.start();
545		Thread.sleep(SHORT_DELAY_MS);
546		assertTrue(lock.isWriteLockedByCurrentThread());
547	<	assertTrue(lock.getWriteHoldCount() == 1);
547	>	assertEquals(1, lock.getWriteHoldCount());
548		lock.writeLock().lock();
549	<	assertTrue(lock.getWriteHoldCount() == 2);
549	>	assertEquals(2, lock.getWriteHoldCount());
550		lock.writeLock().unlock();
551		lock.writeLock().lock();
552		lock.writeLock().unlock();
553		lock.writeLock().unlock();
554	<	t1.join(MEDIUM_DELAY_MS);
555	<	t2.join(MEDIUM_DELAY_MS);
614	<	assertTrue(!t1.isAlive());
615	<	assertTrue(!t2.isAlive());
554	>	awaitTermination(t1, LONG_DELAY_MS);
555	>	awaitTermination(t2, LONG_DELAY_MS);
556		}
557
558
#	Line 620 | Line 560 | public class ReentrantReadWriteLockTest
560		* Read tryLock succeeds if readlocked but not writelocked
561		*/
562		public void testTryLockWhenReadLocked() throws InterruptedException {
563	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
564	<	lock.readLock().lock();
565	<	Thread t = new Thread(new Runnable() {
566	<	public void run() {
567	<	threadAssertTrue(lock.readLock().tryLock());
568	<	lock.readLock().unlock();
569	<	}
630	<	});
563	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
564	>	lock.readLock().lock();
565	>	Thread t = newStartedThread(new CheckedRunnable() {
566	>	public void realRun() {
567	>	assertTrue(lock.readLock().tryLock());
568	>	lock.readLock().unlock();
569	>	}});
570
571	<	t.start();
633	<	t.join();
571	>	awaitTermination(t, LONG_DELAY_MS);
572		lock.readLock().unlock();
573		}
574
637	–
638	–
575		/**
576		* write tryLock fails when readlocked
577		*/
578		public void testWriteTryLockWhenReadLocked() throws InterruptedException {
579	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
580	<	lock.readLock().lock();
581	<	Thread t = new Thread(new Runnable() {
582	<	public void run() {
583	<	threadAssertFalse(lock.writeLock().tryLock());
584	<	}
649	<	});
579	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
580	>	lock.readLock().lock();
581	>	Thread t = newStartedThread(new CheckedRunnable() {
582	>	public void realRun() {
583	>	assertFalse(lock.writeLock().tryLock());
584	>	}});
585
586	<	t.start();
652	<	t.join();
586	>	awaitTermination(t, LONG_DELAY_MS);
587		lock.readLock().unlock();
588		}
589
#	Line 658 | Line 592 | public class ReentrantReadWriteLockTest
592		* Fair Read tryLock succeeds if readlocked but not writelocked
593		*/
594		public void testTryLockWhenReadLockedFair() throws InterruptedException {
595	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
596	<	lock.readLock().lock();
597	<	Thread t = new Thread(new Runnable() {
598	<	public void run() {
599	<	threadAssertTrue(lock.readLock().tryLock());
600	<	lock.readLock().unlock();
601	<	}
668	<	});
595	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
596	>	lock.readLock().lock();
597	>	Thread t = newStartedThread(new CheckedRunnable() {
598	>	public void realRun() {
599	>	assertTrue(lock.readLock().tryLock());
600	>	lock.readLock().unlock();
601	>	}});
602
603	<	t.start();
671	<	t.join();
603	>	awaitTermination(t, LONG_DELAY_MS);
604		lock.readLock().unlock();
605		}
606
#	Line 678 | Line 610 | public class ReentrantReadWriteLockTest
610		* Fair write tryLock fails when readlocked
611		*/
612		public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
613	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
614	<	lock.readLock().lock();
615	<	Thread t = new Thread(new Runnable() {
616	<	public void run() {
617	<	threadAssertFalse(lock.writeLock().tryLock());
618	<	}
687	<	});
613	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
614	>	lock.readLock().lock();
615	>	Thread t = newStartedThread(new CheckedRunnable() {
616	>	public void realRun() {
617	>	assertFalse(lock.writeLock().tryLock());
618	>	}});
619
620	<	t.start();
690	<	t.join();
620	>	awaitTermination(t, LONG_DELAY_MS);
621		lock.readLock().unlock();
622		}
623
#	Line 697 | Line 627 | public class ReentrantReadWriteLockTest
627		* write timed tryLock times out if locked
628		*/
629		public void testWriteTryLock_Timeout() throws InterruptedException {
630	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
631	<	lock.writeLock().lock();
632	<	Thread t = new Thread(new Runnable() {
633	<	public void run() {
634	<	try {
635	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
706	<	} catch (Exception ex) {
707	<	threadUnexpectedException();
708	<	}
709	<	}
710	<	});
630	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
631	>	lock.writeLock().lock();
632	>	Thread t = newStartedThread(new CheckedRunnable() {
633	>	public void realRun() throws InterruptedException {
634	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
635	>	}});
636
637	<	t.start();
638	<	t.join();
637	>	awaitTermination(t, LONG_DELAY_MS);
638	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
639		lock.writeLock().unlock();
640		}
641
#	Line 718 | Line 643 | public class ReentrantReadWriteLockTest
643		* read timed tryLock times out if write-locked
644		*/
645		public void testReadTryLock_Timeout() throws InterruptedException {
646	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
647	<	lock.writeLock().lock();
648	<	Thread t = new Thread(new Runnable() {
649	<	public void run() {
650	<	try {
651	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
727	<	} catch (Exception ex) {
728	<	threadUnexpectedException();
729	<	}
730	<	}
731	<	});
646	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
647	>	lock.writeLock().lock();
648	>	Thread t = newStartedThread(new CheckedRunnable() {
649	>	public void realRun() throws InterruptedException {
650	>	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
651	>	}});
652
653	<	t.start();
654	<	t.join();
653	>	awaitTermination(t, LONG_DELAY_MS);
654	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
655		lock.writeLock().unlock();
656		}
657
#	Line 740 | Line 660 | public class ReentrantReadWriteLockTest
660		* write lockInterruptibly succeeds if lock free else is interruptible
661		*/
662		public void testWriteLockInterruptibly() throws InterruptedException {
663	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
663	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
664		lock.writeLock().lockInterruptibly();
665	<	Thread t = new Thread(new Runnable() {
666	<	public void run() {
667	<	try {
668	<	lock.writeLock().lockInterruptibly();
749	<	threadShouldThrow();
750	<	}
751	<	catch (InterruptedException success) {
752	<	}
753	<	}
754	<	});
665	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
666	>	public void realRun() throws InterruptedException {
667	>	lock.writeLock().lockInterruptibly();
668	>	}});
669
756	–	t.start();
670		Thread.sleep(SHORT_DELAY_MS);
671		t.interrupt();
672	<	Thread.sleep(SHORT_DELAY_MS);
673	<	t.join();
761	<	lock.writeLock().unlock();
672	>	awaitTermination(t, LONG_DELAY_MS);
673	>	releaseWriteLock(lock);
674		}
675
676		/**
677	<	*  read lockInterruptibly succeeds if lock free else is interruptible
677	>	* read lockInterruptibly succeeds if lock free else is interruptible
678		*/
679		public void testReadLockInterruptibly() throws InterruptedException {
680	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
680	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
681		lock.writeLock().lockInterruptibly();
682	<	Thread t = new Thread(new Runnable() {
683	<	public void run() {
684	<	try {
685	<	lock.readLock().lockInterruptibly();
774	<	threadShouldThrow();
775	<	}
776	<	catch (InterruptedException success) {
777	<	}
778	<	}
779	<	});
682	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
683	>	public void realRun() throws InterruptedException {
684	>	lock.readLock().lockInterruptibly();
685	>	}});
686
781	–	t.start();
687		Thread.sleep(SHORT_DELAY_MS);
688		t.interrupt();
689	<	t.join();
690	<	lock.writeLock().unlock();
689	>	awaitTermination(t, LONG_DELAY_MS);
690	>	releaseWriteLock(lock);
691		}
692
693		/**
694		* Calling await without holding lock throws IllegalMonitorStateException
695		*/
696		public void testAwait_IllegalMonitor() throws InterruptedException {
697	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
697	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
698		final Condition c = lock.writeLock().newCondition();
699		try {
700		c.await();
#	Line 801 | Line 706 | public class ReentrantReadWriteLockTest
706		* Calling signal without holding lock throws IllegalMonitorStateException
707		*/
708		public void testSignal_IllegalMonitor() {
709	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
709	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
710		final Condition c = lock.writeLock().newCondition();
711		try {
712		c.signal();
#	Line 813 | Line 718 | public class ReentrantReadWriteLockTest
718		* awaitNanos without a signal times out
719		*/
720		public void testAwaitNanos_Timeout() throws InterruptedException {
721	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
721	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
722		final Condition c = lock.writeLock().newCondition();
723
724		lock.writeLock().lock();
#	Line 824 | Line 729 | public class ReentrantReadWriteLockTest
729
730
731		/**
732	<	*  timed await without a signal times out
732	>	* timed await without a signal times out
733		*/
734	<	public void testAwait_Timeout() {
735	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
734	>	public void testAwait_Timeout() throws InterruptedException {
735	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
736		final Condition c = lock.writeLock().newCondition();
737		lock.writeLock().lock();
738	+	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
739		lock.writeLock().unlock();
740		}
741
742		/**
743		* awaitUntil without a signal times out
744		*/
745	<	public void testAwaitUntil_Timeout() {
746	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
745	>	public void testAwaitUntil_Timeout() throws InterruptedException {
746	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
747		final Condition c = lock.writeLock().newCondition();
748		lock.writeLock().lock();
749		java.util.Date d = new java.util.Date();
750	+	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
751		lock.writeLock().unlock();
752		}
753
#	Line 848 | Line 755 | public class ReentrantReadWriteLockTest
755		* await returns when signalled
756		*/
757		public void testAwait() throws InterruptedException {
758	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
758	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
759		final Condition c = lock.writeLock().newCondition();
760	<	Thread t = new Thread(new Runnable() {
761	<	public void run() {
762	<	try {
763	<	lock.writeLock().lock();
764	<	c.await();
765	<	lock.writeLock().unlock();
859	<	}
860	<	catch (InterruptedException e) {
861	<	threadUnexpectedException();
862	<	}
863	<	}
864	<	});
760	>	Thread t = newStartedThread(new CheckedRunnable() {
761	>	public void realRun() throws InterruptedException {
762	>	lock.writeLock().lock();
763	>	c.await();
764	>	lock.writeLock().unlock();
765	>	}});
766
866	–	t.start();
767		Thread.sleep(SHORT_DELAY_MS);
768		lock.writeLock().lock();
769		c.signal();
770		lock.writeLock().unlock();
771	<	t.join(SHORT_DELAY_MS);
872	<	assertFalse(t.isAlive());
771	>	awaitTermination(t, LONG_DELAY_MS);
772		}
773
774		/** A helper class for uninterruptible wait tests */
#	Line 922 | Line 821 | public class ReentrantReadWriteLockTest
821		lock.writeLock().unlock();
822		}
823
824	<	thread.join();
824	>	awaitTermination(thread, LONG_DELAY_MS);
825		assertTrue(thread.interrupted);
927	–	assertFalse(thread.isAlive());
826		}
827
828		/**
829		* await is interruptible
830		*/
831		public void testAwait_Interrupt() throws InterruptedException {
832	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
832	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
833		final Condition c = lock.writeLock().newCondition();
834	<	Thread t = new Thread(new Runnable() {
835	<	public void run() {
836	<	try {
837	<	lock.writeLock().lock();
838	<	c.await();
839	<	lock.writeLock().unlock();
840	<	threadShouldThrow();
841	<	}
842	<	catch (InterruptedException success) {
843	<	}
844	<	}
845	<	});
846	<
949	<	t.start();
950	<	Thread.sleep(SHORT_DELAY_MS);
834	>	final CountDownLatch locked = new CountDownLatch(1);
835	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
836	>	public void realRun() throws InterruptedException {
837	>	lock.writeLock().lock();
838	>	assertTrue(lock.isWriteLocked());
839	>	locked.countDown();
840	>	try { c.await(); }
841	>	finally { lock.writeLock().unlock(); }
842	>	}});
843	>
844	>	locked.await();
845	>	while (lock.isWriteLocked())
846	>	Thread.yield();
847		t.interrupt();
848	<	t.join(SHORT_DELAY_MS);
849	<	assertFalse(t.isAlive());
848	>	awaitTermination(t, LONG_DELAY_MS);
849	>	assertFalse(lock.isWriteLocked());
850		}
851
852		/**
853		* awaitNanos is interruptible
854		*/
855		public void testAwaitNanos_Interrupt() throws InterruptedException {
856	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
856	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
857		final Condition c = lock.writeLock().newCondition();
858	<	Thread t = new Thread(new Runnable() {
859	<	public void run() {
860	<	try {
861	<	lock.writeLock().lock();
862	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
863	<	lock.writeLock().unlock();
864	<	threadShouldThrow();
865	<	}
866	<	catch (InterruptedException success) {
867	<	}
868	<	}
869	<	});
870	<
975	<	t.start();
976	<	Thread.sleep(SHORT_DELAY_MS);
858	>	final CountDownLatch locked = new CountDownLatch(1);
859	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
860	>	public void realRun() throws InterruptedException {
861	>	lock.writeLock().lock();
862	>	assertTrue(lock.isWriteLocked());
863	>	locked.countDown();
864	>	try { c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); }
865	>	finally { lock.writeLock().unlock(); }
866	>	}});
867	>
868	>	locked.await();
869	>	while (lock.isWriteLocked())
870	>	Thread.yield();
871		t.interrupt();
872	<	t.join(SHORT_DELAY_MS);
873	<	assertFalse(t.isAlive());
872	>	awaitTermination(t, LONG_DELAY_MS);
873	>	assertFalse(lock.isWriteLocked());
874		}
875
876		/**
877		* awaitUntil is interruptible
878		*/
879		public void testAwaitUntil_Interrupt() throws InterruptedException {
880	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
880	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
881		final Condition c = lock.writeLock().newCondition();
882	<	Thread t = new Thread(new Runnable() {
883	<	public void run() {
884	<	try {
885	<	lock.writeLock().lock();
886	<	java.util.Date d = new java.util.Date();
887	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
888	<	lock.writeLock().unlock();
889	<	threadShouldThrow();
890	<	}
891	<	catch (InterruptedException success) {
892	<	}
893	<	}
894	<	});
895	<
1002	<	t.start();
1003	<	Thread.sleep(SHORT_DELAY_MS);
882	>	final CountDownLatch locked = new CountDownLatch(1);
883	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
884	>	public void realRun() throws InterruptedException {
885	>	lock.writeLock().lock();
886	>	assertTrue(lock.isWriteLocked());
887	>	locked.countDown();
888	>	java.util.Date d = new java.util.Date();
889	>	try { c.awaitUntil(new java.util.Date(d.getTime() + 10000)); }
890	>	finally { lock.writeLock().unlock(); }
891	>	}});
892	>
893	>	locked.await();
894	>	while (lock.isWriteLocked())
895	>	Thread.yield();
896		t.interrupt();
897	<	t.join(SHORT_DELAY_MS);
898	<	assertFalse(t.isAlive());
897	>	awaitTermination(t, LONG_DELAY_MS);
898	>	assertFalse(lock.isWriteLocked());
899		}
900
901		/**
902		* signalAll wakes up all threads
903		*/
904		public void testSignalAll() throws InterruptedException {
905	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
905	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
906		final Condition c = lock.writeLock().newCondition();
907	<	Thread t1 = new Thread(new Runnable() {
908	<	public void run() {
909	<	try {
910	<	lock.writeLock().lock();
911	<	c.await();
912	<	lock.writeLock().unlock();
913	<	}
914	<	catch (InterruptedException e) {
915	<	threadUnexpectedException();
916	<	}
917	<	}
918	<	});
919	<
1028	<	Thread t2 = new Thread(new Runnable() {
1029	<	public void run() {
1030	<	try {
1031	<	lock.writeLock().lock();
1032	<	c.await();
1033	<	lock.writeLock().unlock();
1034	<	}
1035	<	catch (InterruptedException e) {
1036	<	threadUnexpectedException();
1037	<	}
1038	<	}
1039	<	});
907	>	Thread t1 = newStartedThread(new CheckedRunnable() {
908	>	public void realRun() throws InterruptedException {
909	>	lock.writeLock().lock();
910	>	c.await();
911	>	lock.writeLock().unlock();
912	>	}});
913	>
914	>	Thread t2 = newStartedThread(new CheckedRunnable() {
915	>	public void realRun() throws InterruptedException {
916	>	lock.writeLock().lock();
917	>	c.await();
918	>	lock.writeLock().unlock();
919	>	}});
920
1041	–	t1.start();
1042	–	t2.start();
921		Thread.sleep(SHORT_DELAY_MS);
922		lock.writeLock().lock();
923		c.signalAll();
924		lock.writeLock().unlock();
925	<	t1.join(SHORT_DELAY_MS);
926	<	t2.join(SHORT_DELAY_MS);
1049	<	assertFalse(t1.isAlive());
1050	<	assertFalse(t2.isAlive());
925	>	awaitTermination(t1, LONG_DELAY_MS);
926	>	awaitTermination(t2, LONG_DELAY_MS);
927		}
928
929		/**
#	Line 1074 | Line 950 | public class ReentrantReadWriteLockTest
950		* hasQueuedThreads reports whether there are waiting threads
951		*/
952		public void testhasQueuedThreads() throws InterruptedException {
953	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
953	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
954		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
955		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
956		assertFalse(lock.hasQueuedThreads());
#	Line 1091 | Line 967 | public class ReentrantReadWriteLockTest
967		lock.writeLock().unlock();
968		Thread.sleep(SHORT_DELAY_MS);
969		assertFalse(lock.hasQueuedThreads());
970	<	t1.join();
971	<	t2.join();
970	>	awaitTermination(t1, LONG_DELAY_MS);
971	>	awaitTermination(t2, LONG_DELAY_MS);
972		}
973
974		/**
975		* hasQueuedThread(null) throws NPE
976		*/
977		public void testHasQueuedThreadNPE() {
978	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
978	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
979		try {
980		sync.hasQueuedThread(null);
981		shouldThrow();
982	<	} catch (NullPointerException success) {
1107	<	}
982	>	} catch (NullPointerException success) {}
983		}
984
985		/**
986		* hasQueuedThread reports whether a thread is queued.
987		*/
988		public void testHasQueuedThread() throws InterruptedException {
989	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
989	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
990		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
991		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
992		assertFalse(sync.hasQueuedThread(t1));
#	Line 1133 | Line 1008 | public class ReentrantReadWriteLockTest
1008		assertFalse(sync.hasQueuedThread(t1));
1009		Thread.sleep(SHORT_DELAY_MS);
1010		assertFalse(sync.hasQueuedThread(t2));
1011	<	t1.join();
1012	<	t2.join();
1011	>	awaitTermination(t1, LONG_DELAY_MS);
1012	>	awaitTermination(t2, LONG_DELAY_MS);
1013		}
1014
1015
#	Line 1142 | Line 1017 | public class ReentrantReadWriteLockTest
1017		* getQueueLength reports number of waiting threads
1018		*/
1019		public void testGetQueueLength() throws InterruptedException {
1020	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1020	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1021		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1022		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1023		assertEquals(0, lock.getQueueLength());
#	Line 1159 | Line 1034 | public class ReentrantReadWriteLockTest
1034		lock.writeLock().unlock();
1035		Thread.sleep(SHORT_DELAY_MS);
1036		assertEquals(0, lock.getQueueLength());
1037	<	t1.join();
1038	<	t2.join();
1037	>	awaitTermination(t1, LONG_DELAY_MS);
1038	>	awaitTermination(t2, LONG_DELAY_MS);
1039		}
1040
1041		/**
1042		* getQueuedThreads includes waiting threads
1043		*/
1044		public void testGetQueuedThreads() throws InterruptedException {
1045	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1045	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1046		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1047		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1048		assertTrue(lock.getQueuedThreads().isEmpty());
#	Line 1187 | Line 1062 | public class ReentrantReadWriteLockTest
1062		lock.writeLock().unlock();
1063		Thread.sleep(SHORT_DELAY_MS);
1064		assertTrue(lock.getQueuedThreads().isEmpty());
1065	<	t1.join();
1066	<	t2.join();
1065	>	awaitTermination(t1, LONG_DELAY_MS);
1066	>	awaitTermination(t2, LONG_DELAY_MS);
1067		}
1068
1069		/**
1070		* hasWaiters throws NPE if null
1071		*/
1072		public void testHasWaitersNPE() {
1073	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1073	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1074		try {
1075		lock.hasWaiters(null);
1076		shouldThrow();
#	Line 1206 | Line 1081 | public class ReentrantReadWriteLockTest
1081		* getWaitQueueLength throws NPE if null
1082		*/
1083		public void testGetWaitQueueLengthNPE() {
1084	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1084	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1085		try {
1086		lock.getWaitQueueLength(null);
1087		shouldThrow();
#	Line 1218 | Line 1093 | public class ReentrantReadWriteLockTest
1093		* getWaitingThreads throws NPE if null
1094		*/
1095		public void testGetWaitingThreadsNPE() {
1096	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1096	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1097		try {
1098		lock.getWaitingThreads(null);
1099		shouldThrow();
#	Line 1229 | Line 1104 | public class ReentrantReadWriteLockTest
1104		* hasWaiters throws IAE if not owned
1105		*/
1106		public void testHasWaitersIAE() {
1107	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1107	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1108		final Condition c = lock.writeLock().newCondition();
1109	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1109	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1110		try {
1111		lock2.hasWaiters(c);
1112		shouldThrow();
#	Line 1242 | Line 1117 | public class ReentrantReadWriteLockTest
1117		* hasWaiters throws IMSE if not locked
1118		*/
1119		public void testHasWaitersIMSE() {
1120	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1120	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1121		final Condition c = lock.writeLock().newCondition();
1122		try {
1123		lock.hasWaiters(c);
#	Line 1255 | Line 1130 | public class ReentrantReadWriteLockTest
1130		* getWaitQueueLength throws IAE if not owned
1131		*/
1132		public void testGetWaitQueueLengthIAE() {
1133	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1133	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1134		final Condition c = lock.writeLock().newCondition();
1135	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1135	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1136		try {
1137		lock2.getWaitQueueLength(c);
1138		shouldThrow();
#	Line 1268 | Line 1143 | public class ReentrantReadWriteLockTest
1143		* getWaitQueueLength throws IMSE if not locked
1144		*/
1145		public void testGetWaitQueueLengthIMSE() {
1146	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1146	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1147		final Condition c = lock.writeLock().newCondition();
1148		try {
1149		lock.getWaitQueueLength(c);
#	Line 1281 | Line 1156 | public class ReentrantReadWriteLockTest
1156		* getWaitingThreads throws IAE if not owned
1157		*/
1158		public void testGetWaitingThreadsIAE() {
1159	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1159	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1160		final Condition c = lock.writeLock().newCondition();
1161	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1161	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1162		try {
1163		lock2.getWaitingThreads(c);
1164		shouldThrow();
#	Line 1294 | Line 1169 | public class ReentrantReadWriteLockTest
1169		* getWaitingThreads throws IMSE if not locked
1170		*/
1171		public void testGetWaitingThreadsIMSE() {
1172	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1172	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1173		final Condition c = lock.writeLock().newCondition();
1174		try {
1175		lock.getWaitingThreads(c);
#	Line 1307 | Line 1182 | public class ReentrantReadWriteLockTest
1182		* hasWaiters returns true when a thread is waiting, else false
1183		*/
1184		public void testHasWaiters() throws InterruptedException {
1185	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1185	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1186		final Condition c = lock.writeLock().newCondition();
1187	<	Thread t = new Thread(new Runnable() {
1188	<	public void run() {
1189	<	try {
1190	<	lock.writeLock().lock();
1191	<	threadAssertFalse(lock.hasWaiters(c));
1192	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1193	<	c.await();
1194	<	lock.writeLock().unlock();
1320	<	}
1321	<	catch (InterruptedException e) {
1322	<	threadUnexpectedException();
1323	<	}
1324	<	}
1325	<	});
1187	>	Thread t = newStartedThread(new CheckedRunnable() {
1188	>	public void realRun() throws InterruptedException {
1189	>	lock.writeLock().lock();
1190	>	assertFalse(lock.hasWaiters(c));
1191	>	assertEquals(0, lock.getWaitQueueLength(c));
1192	>	c.await();
1193	>	lock.writeLock().unlock();
1194	>	}});
1195
1327	–	t.start();
1196		Thread.sleep(SHORT_DELAY_MS);
1197		lock.writeLock().lock();
1198		assertTrue(lock.hasWaiters(c));
#	Line 1336 | Line 1204 | public class ReentrantReadWriteLockTest
1204		assertFalse(lock.hasWaiters(c));
1205		assertEquals(0, lock.getWaitQueueLength(c));
1206		lock.writeLock().unlock();
1207	<	t.join(SHORT_DELAY_MS);
1340	<	assertFalse(t.isAlive());
1207	>	awaitTermination(t, LONG_DELAY_MS);
1208		}
1209
1210		/**
1211		* getWaitQueueLength returns number of waiting threads
1212		*/
1213		public void testGetWaitQueueLength() throws InterruptedException {
1214	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1214	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1215		final Condition c = lock.writeLock().newCondition();
1216	<	Thread t = new Thread(new Runnable() {
1217	<	public void run() {
1218	<	try {
1219	<	lock.writeLock().lock();
1220	<	threadAssertFalse(lock.hasWaiters(c));
1221	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1222	<	c.await();
1223	<	lock.writeLock().unlock();
1357	<	}
1358	<	catch (InterruptedException e) {
1359	<	threadUnexpectedException();
1360	<	}
1361	<	}
1362	<	});
1216	>	Thread t = newStartedThread(new CheckedRunnable() {
1217	>	public void realRun() throws InterruptedException {
1218	>	lock.writeLock().lock();
1219	>	assertFalse(lock.hasWaiters(c));
1220	>	assertEquals(0, lock.getWaitQueueLength(c));
1221	>	c.await();
1222	>	lock.writeLock().unlock();
1223	>	}});
1224
1364	–	t.start();
1225		Thread.sleep(SHORT_DELAY_MS);
1226		lock.writeLock().lock();
1227		assertTrue(lock.hasWaiters(c));
#	Line 1373 | Line 1233 | public class ReentrantReadWriteLockTest
1233		assertFalse(lock.hasWaiters(c));
1234		assertEquals(0, lock.getWaitQueueLength(c));
1235		lock.writeLock().unlock();
1236	<	t.join(SHORT_DELAY_MS);
1377	<	assertFalse(t.isAlive());
1236	>	awaitTermination(t, LONG_DELAY_MS);
1237		}
1238
1239
#	Line 1382 | Line 1241 | public class ReentrantReadWriteLockTest
1241		* getWaitingThreads returns only and all waiting threads
1242		*/
1243		public void testGetWaitingThreads() throws InterruptedException {
1244	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1244	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1245		final Condition c = lock.writeLock().newCondition();
1246	<	Thread t1 = new Thread(new Runnable() {
1247	<	public void run() {
1248	<	try {
1249	<	lock.writeLock().lock();
1250	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1251	<	c.await();
1252	<	lock.writeLock().unlock();
1253	<	}
1254	<	catch (InterruptedException e) {
1255	<	threadUnexpectedException();
1256	<	}
1257	<	}
1258	<	});
1259	<
1260	<	Thread t2 = new Thread(new Runnable() {
1402	<	public void run() {
1403	<	try {
1404	<	lock.writeLock().lock();
1405	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1406	<	c.await();
1407	<	lock.writeLock().unlock();
1408	<	}
1409	<	catch (InterruptedException e) {
1410	<	threadUnexpectedException();
1411	<	}
1412	<	}
1413	<	});
1246	>	Thread t1 = new Thread(new CheckedRunnable() {
1247	>	public void realRun() throws InterruptedException {
1248	>	lock.writeLock().lock();
1249	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1250	>	c.await();
1251	>	lock.writeLock().unlock();
1252	>	}});
1253	>
1254	>	Thread t2 = new Thread(new CheckedRunnable() {
1255	>	public void realRun() throws InterruptedException {
1256	>	lock.writeLock().lock();
1257	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1258	>	c.await();
1259	>	lock.writeLock().unlock();
1260	>	}});
1261
1262		lock.writeLock().lock();
1263		assertTrue(lock.getWaitingThreads(c).isEmpty());
#	Line 1430 | Line 1277 | public class ReentrantReadWriteLockTest
1277		assertFalse(lock.hasWaiters(c));
1278		assertTrue(lock.getWaitingThreads(c).isEmpty());
1279		lock.writeLock().unlock();
1280	<	t1.join(SHORT_DELAY_MS);
1281	<	t2.join(SHORT_DELAY_MS);
1435	<	assertFalse(t1.isAlive());
1436	<	assertFalse(t2.isAlive());
1280	>	awaitTermination(t1, LONG_DELAY_MS);
1281	>	awaitTermination(t2, LONG_DELAY_MS);
1282		}
1283
1284		/**

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