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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 1.54 by jsr166, Mon May 2 01:07:15 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();
372	<	}
373	<	});
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
375	–	t1.start();
376	–	t2.start();
353		Thread.sleep(SHORT_DELAY_MS);
354	<	lock.writeLock().unlock();
355	<	t1.join(MEDIUM_DELAY_MS);
356	<	t2.join(MEDIUM_DELAY_MS);
381	<	assertTrue(!t1.isAlive());
382	<	assertTrue(!t2.isAlive());
354	>	releaseWriteLock(lock);
355	>	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();
363	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
364	>	lock.writeLock().lock();
365		assertTrue(lock.readLock().tryLock());
366		lock.readLock().unlock();
367		lock.writeLock().unlock();
#	Line 398 | Line 372 | public class ReentrantReadWriteLockTest
372		* other threads are waiting for readlock
373		*/
374		public void testReadHoldingWriteLock2() throws InterruptedException {
375	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
376	<	lock.writeLock().lock();
377	<	Thread t1 = new Thread(new Runnable() {
378	<	public void run() {
379	<	lock.readLock().lock();
380	<	lock.readLock().unlock();
381	<	}
382	<	});
383	<	Thread t2 = new Thread(new Runnable() {
384	<	public void run() {
385	<	lock.readLock().lock();
386	<	lock.readLock().unlock();
413	<	}
414	<	});
375	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
376	>	lock.writeLock().lock();
377	>	Thread t1 = newStartedThread(new CheckedRunnable() {
378	>	public void realRun() {
379	>	lock.readLock().lock();
380	>	lock.readLock().unlock();
381	>	}});
382	>	Thread t2 = newStartedThread(new CheckedRunnable() {
383	>	public void realRun() {
384	>	lock.readLock().lock();
385	>	lock.readLock().unlock();
386	>	}});
387
416	–	t1.start();
417	–	t2.start();
388		lock.readLock().lock();
389		lock.readLock().unlock();
390		Thread.sleep(SHORT_DELAY_MS);
391		lock.readLock().lock();
392		lock.readLock().unlock();
393		lock.writeLock().unlock();
394	<	t1.join(MEDIUM_DELAY_MS);
395	<	t2.join(MEDIUM_DELAY_MS);
426	<	assertTrue(!t1.isAlive());
427	<	assertTrue(!t2.isAlive());
394	>	awaitTermination(t1, LONG_DELAY_MS);
395	>	awaitTermination(t2, LONG_DELAY_MS);
396		}
397
398		/**
399	<	*  Read lock succeeds if write locked by current thread even if
399	>	* Read lock succeeds if write locked by current thread even if
400		* other threads are waiting for writelock
401		*/
402		public void testReadHoldingWriteLock3() throws InterruptedException {
403	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
404	<	lock.writeLock().lock();
405	<	Thread t1 = new Thread(new Runnable() {
406	<	public void run() {
407	<	lock.writeLock().lock();
408	<	lock.writeLock().unlock();
409	<	}
410	<	});
411	<	Thread t2 = new Thread(new Runnable() {
412	<	public void run() {
413	<	lock.writeLock().lock();
414	<	lock.writeLock().unlock();
447	<	}
448	<	});
403	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
404	>	lock.writeLock().lock();
405	>	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
450	–	t1.start();
451	–	t2.start();
416		lock.readLock().lock();
417		lock.readLock().unlock();
418		Thread.sleep(SHORT_DELAY_MS);
419		lock.readLock().lock();
420		lock.readLock().unlock();
421		lock.writeLock().unlock();
422	<	t1.join(MEDIUM_DELAY_MS);
423	<	t2.join(MEDIUM_DELAY_MS);
460	<	assertTrue(!t1.isAlive());
461	<	assertTrue(!t2.isAlive());
422	>	awaitTermination(t1, LONG_DELAY_MS);
423	>	awaitTermination(t2, LONG_DELAY_MS);
424		}
425
426
427		/**
428	<	*  Write lock succeeds if write locked by current thread even if
428	>	* Write lock succeeds if write locked by current thread even if
429		* other threads are waiting for writelock
430		*/
431		public void testWriteHoldingWriteLock4() throws InterruptedException {
432	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
433	<	lock.writeLock().lock();
434	<	Thread t1 = new Thread(new Runnable() {
435	<	public void run() {
436	<	lock.writeLock().lock();
437	<	lock.writeLock().unlock();
438	<	}
439	<	});
440	<	Thread t2 = new Thread(new Runnable() {
441	<	public void run() {
442	<	lock.writeLock().lock();
443	<	lock.writeLock().unlock();
482	<	}
483	<	});
432	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
433	>	lock.writeLock().lock();
434	>	Thread t1 = newStartedThread(new CheckedRunnable() {
435	>	public void realRun() {
436	>	lock.writeLock().lock();
437	>	lock.writeLock().unlock();
438	>	}});
439	>	Thread t2 = newStartedThread(new CheckedRunnable() {
440	>	public void realRun() {
441	>	lock.writeLock().lock();
442	>	lock.writeLock().unlock();
443	>	}});
444
485	–	t1.start();
486	–	t2.start();
445		lock.writeLock().lock();
446		lock.writeLock().unlock();
447		Thread.sleep(SHORT_DELAY_MS);
448		lock.writeLock().lock();
449		lock.writeLock().unlock();
450		lock.writeLock().unlock();
451	<	t1.join(MEDIUM_DELAY_MS);
452	<	t2.join(MEDIUM_DELAY_MS);
495	<	assertTrue(!t1.isAlive());
496	<	assertTrue(!t2.isAlive());
451	>	awaitTermination(t1, LONG_DELAY_MS);
452	>	awaitTermination(t2, LONG_DELAY_MS);
453		}
454
455
#	Line 501 | Line 457 | public class ReentrantReadWriteLockTest
457		* Fair Read trylock succeeds if write locked by current thread
458		*/
459		public void testReadHoldingWriteLockFair() {
460	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
461	<	lock.writeLock().lock();
460	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
461	>	lock.writeLock().lock();
462		assertTrue(lock.readLock().tryLock());
463		lock.readLock().unlock();
464		lock.writeLock().unlock();
#	Line 513 | Line 469 | public class ReentrantReadWriteLockTest
469		* other threads are waiting for readlock
470		*/
471		public void testReadHoldingWriteLockFair2() throws InterruptedException {
472	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
473	<	lock.writeLock().lock();
474	<	Thread t1 = new Thread(new Runnable() {
475	<	public void run() {
476	<	lock.readLock().lock();
477	<	lock.readLock().unlock();
478	<	}
479	<	});
480	<	Thread t2 = new Thread(new Runnable() {
481	<	public void run() {
482	<	lock.readLock().lock();
483	<	lock.readLock().unlock();
528	<	}
529	<	});
472	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
473	>	lock.writeLock().lock();
474	>	Thread t1 = newStartedThread(new CheckedRunnable() {
475	>	public void realRun() {
476	>	lock.readLock().lock();
477	>	lock.readLock().unlock();
478	>	}});
479	>	Thread t2 = newStartedThread(new CheckedRunnable() {
480	>	public void realRun() {
481	>	lock.readLock().lock();
482	>	lock.readLock().unlock();
483	>	}});
484
531	–	t1.start();
532	–	t2.start();
485		lock.readLock().lock();
486		lock.readLock().unlock();
487		Thread.sleep(SHORT_DELAY_MS);
488		lock.readLock().lock();
489		lock.readLock().unlock();
490		lock.writeLock().unlock();
491	<	t1.join(MEDIUM_DELAY_MS);
492	<	t2.join(MEDIUM_DELAY_MS);
541	<	assertTrue(!t1.isAlive());
542	<	assertTrue(!t2.isAlive());
491	>	awaitTermination(t1, LONG_DELAY_MS);
492	>	awaitTermination(t2, LONG_DELAY_MS);
493		}
494
495
#	Line 548 | Line 498 | public class ReentrantReadWriteLockTest
498		* other threads are waiting for writelock
499		*/
500		public void testReadHoldingWriteLockFair3() throws InterruptedException {
501	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
502	<	lock.writeLock().lock();
503	<	Thread t1 = new Thread(new Runnable() {
504	<	public void run() {
505	<	lock.writeLock().lock();
506	<	lock.writeLock().unlock();
507	<	}
508	<	});
509	<	Thread t2 = new Thread(new Runnable() {
510	<	public void run() {
511	<	lock.writeLock().lock();
512	<	lock.writeLock().unlock();
563	<	}
564	<	});
501	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
502	>	lock.writeLock().lock();
503	>	Thread t1 = newStartedThread(new CheckedRunnable() {
504	>	public void realRun() {
505	>	lock.writeLock().lock();
506	>	lock.writeLock().unlock();
507	>	}});
508	>	Thread t2 = newStartedThread(new CheckedRunnable() {
509	>	public void realRun() {
510	>	lock.writeLock().lock();
511	>	lock.writeLock().unlock();
512	>	}});
513
566	–	t1.start();
567	–	t2.start();
514		lock.readLock().lock();
515		lock.readLock().unlock();
516		Thread.sleep(SHORT_DELAY_MS);
517		lock.readLock().lock();
518		lock.readLock().unlock();
519		lock.writeLock().unlock();
520	<	t1.join(MEDIUM_DELAY_MS);
521	<	t2.join(MEDIUM_DELAY_MS);
576	<	assertTrue(!t1.isAlive());
577	<	assertTrue(!t2.isAlive());
520	>	awaitTermination(t1, LONG_DELAY_MS);
521	>	awaitTermination(t2, LONG_DELAY_MS);
522		}
523
524
#	Line 583 | Line 527 | public class ReentrantReadWriteLockTest
527		* other threads are waiting for writelock
528		*/
529		public void testWriteHoldingWriteLockFair4() throws InterruptedException {
530	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
531	<	lock.writeLock().lock();
532	<	Thread t1 = new Thread(new Runnable() {
533	<	public void run() {
534	<	lock.writeLock().lock();
535	<	lock.writeLock().unlock();
536	<	}
537	<	});
538	<	Thread t2 = new Thread(new Runnable() {
539	<	public void run() {
540	<	lock.writeLock().lock();
541	<	lock.writeLock().unlock();
598	<	}
599	<	});
530	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
531	>	lock.writeLock().lock();
532	>	Thread t1 = newStartedThread(new CheckedRunnable() {
533	>	public void realRun() {
534	>	lock.writeLock().lock();
535	>	lock.writeLock().unlock();
536	>	}});
537	>	Thread t2 = newStartedThread(new CheckedRunnable() {
538	>	public void realRun() {
539	>	lock.writeLock().lock();
540	>	lock.writeLock().unlock();
541	>	}});
542
601	–	t1.start();
602	–	t2.start();
543		Thread.sleep(SHORT_DELAY_MS);
544		assertTrue(lock.isWriteLockedByCurrentThread());
545	<	assertTrue(lock.getWriteHoldCount() == 1);
545	>	assertEquals(1, lock.getWriteHoldCount());
546		lock.writeLock().lock();
547	<	assertTrue(lock.getWriteHoldCount() == 2);
547	>	assertEquals(2, lock.getWriteHoldCount());
548		lock.writeLock().unlock();
549		lock.writeLock().lock();
550		lock.writeLock().unlock();
551		lock.writeLock().unlock();
552	<	t1.join(MEDIUM_DELAY_MS);
553	<	t2.join(MEDIUM_DELAY_MS);
614	<	assertTrue(!t1.isAlive());
615	<	assertTrue(!t2.isAlive());
552	>	awaitTermination(t1, LONG_DELAY_MS);
553	>	awaitTermination(t2, LONG_DELAY_MS);
554		}
555
556
#	Line 620 | Line 558 | public class ReentrantReadWriteLockTest
558		* Read tryLock succeeds if readlocked but not writelocked
559		*/
560		public void testTryLockWhenReadLocked() throws InterruptedException {
561	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
562	<	lock.readLock().lock();
563	<	Thread t = new Thread(new Runnable() {
564	<	public void run() {
565	<	threadAssertTrue(lock.readLock().tryLock());
566	<	lock.readLock().unlock();
567	<	}
630	<	});
561	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
562	>	lock.readLock().lock();
563	>	Thread t = newStartedThread(new CheckedRunnable() {
564	>	public void realRun() {
565	>	assertTrue(lock.readLock().tryLock());
566	>	lock.readLock().unlock();
567	>	}});
568
569	<	t.start();
633	<	t.join();
569	>	awaitTermination(t, LONG_DELAY_MS);
570		lock.readLock().unlock();
571		}
572
637	–
638	–
573		/**
574		* write tryLock fails when readlocked
575		*/
576		public void testWriteTryLockWhenReadLocked() throws InterruptedException {
577	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
578	<	lock.readLock().lock();
579	<	Thread t = new Thread(new Runnable() {
580	<	public void run() {
581	<	threadAssertFalse(lock.writeLock().tryLock());
582	<	}
649	<	});
577	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
578	>	lock.readLock().lock();
579	>	Thread t = newStartedThread(new CheckedRunnable() {
580	>	public void realRun() {
581	>	assertFalse(lock.writeLock().tryLock());
582	>	}});
583
584	<	t.start();
652	<	t.join();
584	>	awaitTermination(t, LONG_DELAY_MS);
585		lock.readLock().unlock();
586		}
587
#	Line 658 | Line 590 | public class ReentrantReadWriteLockTest
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 = new Thread(new Runnable() {
596	<	public void run() {
597	<	threadAssertTrue(lock.readLock().tryLock());
598	<	lock.readLock().unlock();
599	<	}
668	<	});
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	<	t.start();
671	<	t.join();
601	>	awaitTermination(t, LONG_DELAY_MS);
602		lock.readLock().unlock();
603		}
604
#	Line 678 | Line 608 | public class ReentrantReadWriteLockTest
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 = new Thread(new Runnable() {
614	<	public void run() {
615	<	threadAssertFalse(lock.writeLock().tryLock());
616	<	}
687	<	});
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	<	t.start();
690	<	t.join();
618	>	awaitTermination(t, LONG_DELAY_MS);
619		lock.readLock().unlock();
620		}
621
#	Line 697 | Line 625 | public class ReentrantReadWriteLockTest
625		* write timed tryLock times out if locked
626		*/
627		public void testWriteTryLock_Timeout() throws InterruptedException {
628	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
629	<	lock.writeLock().lock();
630	<	Thread t = new Thread(new Runnable() {
631	<	public void run() {
632	<	try {
633	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
706	<	} catch (Exception ex) {
707	<	threadUnexpectedException();
708	<	}
709	<	}
710	<	});
628	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
629	>	lock.writeLock().lock();
630	>	Thread t = newStartedThread(new CheckedRunnable() {
631	>	public void realRun() throws InterruptedException {
632	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
633	>	}});
634
635	<	t.start();
636	<	t.join();
635	>	awaitTermination(t, LONG_DELAY_MS);
636	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
637		lock.writeLock().unlock();
638		}
639
#	Line 718 | Line 641 | public class ReentrantReadWriteLockTest
641		* read timed tryLock times out if write-locked
642		*/
643		public void testReadTryLock_Timeout() throws InterruptedException {
644	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
645	<	lock.writeLock().lock();
646	<	Thread t = new Thread(new Runnable() {
647	<	public void run() {
648	<	try {
649	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
727	<	} catch (Exception ex) {
728	<	threadUnexpectedException();
729	<	}
730	<	}
731	<	});
644	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
645	>	lock.writeLock().lock();
646	>	Thread t = newStartedThread(new CheckedRunnable() {
647	>	public void realRun() throws InterruptedException {
648	>	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
649	>	}});
650
651	<	t.start();
652	<	t.join();
651	>	awaitTermination(t, LONG_DELAY_MS);
652	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
653		lock.writeLock().unlock();
654		}
655
#	Line 740 | Line 658 | public class ReentrantReadWriteLockTest
658		* write lockInterruptibly succeeds if lock free else is interruptible
659		*/
660		public void testWriteLockInterruptibly() throws InterruptedException {
661	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
661	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
662		lock.writeLock().lockInterruptibly();
663	<	Thread t = new Thread(new Runnable() {
664	<	public void run() {
665	<	try {
666	<	lock.writeLock().lockInterruptibly();
749	<	threadShouldThrow();
750	<	}
751	<	catch (InterruptedException success) {
752	<	}
753	<	}
754	<	});
663	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
664	>	public void realRun() throws InterruptedException {
665	>	lock.writeLock().lockInterruptibly();
666	>	}});
667
756	–	t.start();
668		Thread.sleep(SHORT_DELAY_MS);
669		t.interrupt();
670	<	Thread.sleep(SHORT_DELAY_MS);
671	<	t.join();
761	<	lock.writeLock().unlock();
670	>	awaitTermination(t, LONG_DELAY_MS);
671	>	releaseWriteLock(lock);
672		}
673
674		/**
675	<	*  read lockInterruptibly succeeds if lock free else is interruptible
675	>	* read lockInterruptibly succeeds if lock free else is interruptible
676		*/
677		public void testReadLockInterruptibly() throws InterruptedException {
678	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
678	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
679		lock.writeLock().lockInterruptibly();
680	<	Thread t = new Thread(new Runnable() {
681	<	public void run() {
682	<	try {
683	<	lock.readLock().lockInterruptibly();
774	<	threadShouldThrow();
775	<	}
776	<	catch (InterruptedException success) {
777	<	}
778	<	}
779	<	});
680	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
681	>	public void realRun() throws InterruptedException {
682	>	lock.readLock().lockInterruptibly();
683	>	}});
684
781	–	t.start();
685		Thread.sleep(SHORT_DELAY_MS);
686		t.interrupt();
687	<	t.join();
688	<	lock.writeLock().unlock();
687	>	awaitTermination(t, LONG_DELAY_MS);
688	>	releaseWriteLock(lock);
689		}
690
691		/**
692		* Calling await without holding lock throws IllegalMonitorStateException
693		*/
694		public void testAwait_IllegalMonitor() throws InterruptedException {
695	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
695	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
696		final Condition c = lock.writeLock().newCondition();
697		try {
698		c.await();
#	Line 801 | Line 704 | public class ReentrantReadWriteLockTest
704		* Calling signal without holding lock throws IllegalMonitorStateException
705		*/
706		public void testSignal_IllegalMonitor() {
707	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
707	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
708		final Condition c = lock.writeLock().newCondition();
709		try {
710		c.signal();
#	Line 813 | Line 716 | public class ReentrantReadWriteLockTest
716		* awaitNanos without a signal times out
717		*/
718		public void testAwaitNanos_Timeout() throws InterruptedException {
719	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
719	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
720		final Condition c = lock.writeLock().newCondition();
721
722		lock.writeLock().lock();
#	Line 824 | Line 727 | public class ReentrantReadWriteLockTest
727
728
729		/**
730	<	*  timed await without a signal times out
730	>	* timed await without a signal times out
731		*/
732	<	public void testAwait_Timeout() {
733	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
732	>	public void testAwait_Timeout() throws InterruptedException {
733	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
734		final Condition c = lock.writeLock().newCondition();
735		lock.writeLock().lock();
736	+	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
737		lock.writeLock().unlock();
738		}
739
740		/**
741		* awaitUntil without a signal times out
742		*/
743	<	public void testAwaitUntil_Timeout() {
744	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
743	>	public void testAwaitUntil_Timeout() throws InterruptedException {
744	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
745		final Condition c = lock.writeLock().newCondition();
746		lock.writeLock().lock();
747		java.util.Date d = new java.util.Date();
748	+	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
749		lock.writeLock().unlock();
750		}
751
#	Line 848 | Line 753 | public class ReentrantReadWriteLockTest
753		* await returns when signalled
754		*/
755		public void testAwait() throws InterruptedException {
756	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
756	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
757		final Condition c = lock.writeLock().newCondition();
758	<	Thread t = new Thread(new Runnable() {
759	<	public void run() {
760	<	try {
761	<	lock.writeLock().lock();
762	<	c.await();
763	<	lock.writeLock().unlock();
859	<	}
860	<	catch (InterruptedException e) {
861	<	threadUnexpectedException();
862	<	}
863	<	}
864	<	});
758	>	Thread t = newStartedThread(new CheckedRunnable() {
759	>	public void realRun() throws InterruptedException {
760	>	lock.writeLock().lock();
761	>	c.await();
762	>	lock.writeLock().unlock();
763	>	}});
764
866	–	t.start();
765		Thread.sleep(SHORT_DELAY_MS);
766		lock.writeLock().lock();
767		c.signal();
768		lock.writeLock().unlock();
769	<	t.join(SHORT_DELAY_MS);
872	<	assertFalse(t.isAlive());
769	>	awaitTermination(t, LONG_DELAY_MS);
770		}
771
772		/** A helper class for uninterruptible wait tests */
#	Line 922 | Line 819 | public class ReentrantReadWriteLockTest
819		lock.writeLock().unlock();
820		}
821
822	<	thread.join();
822	>	awaitTermination(thread, LONG_DELAY_MS);
823		assertTrue(thread.interrupted);
927	–	assertFalse(thread.isAlive());
824		}
825
826		/**
827		* await is interruptible
828		*/
829		public void testAwait_Interrupt() throws InterruptedException {
830	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
830	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
831		final Condition c = lock.writeLock().newCondition();
832	<	Thread t = new Thread(new Runnable() {
833	<	public void run() {
834	<	try {
835	<	lock.writeLock().lock();
836	<	c.await();
837	<	lock.writeLock().unlock();
838	<	threadShouldThrow();
839	<	}
840	<	catch (InterruptedException success) {
841	<	}
842	<	}
843	<	});
844	<
949	<	t.start();
950	<	Thread.sleep(SHORT_DELAY_MS);
832	>	final CountDownLatch locked = new CountDownLatch(1);
833	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
834	>	public void realRun() throws InterruptedException {
835	>	lock.writeLock().lock();
836	>	assertTrue(lock.isWriteLocked());
837	>	locked.countDown();
838	>	try { c.await(); }
839	>	finally { lock.writeLock().unlock(); }
840	>	}});
841	>
842	>	locked.await();
843	>	while (lock.isWriteLocked())
844	>	Thread.yield();
845		t.interrupt();
846	<	t.join(SHORT_DELAY_MS);
847	<	assertFalse(t.isAlive());
846	>	awaitTermination(t, LONG_DELAY_MS);
847	>	assertFalse(lock.isWriteLocked());
848		}
849
850		/**
851		* awaitNanos is interruptible
852		*/
853		public void testAwaitNanos_Interrupt() throws InterruptedException {
854	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
854	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
855		final Condition c = lock.writeLock().newCondition();
856	<	Thread t = new Thread(new Runnable() {
857	<	public void run() {
858	<	try {
859	<	lock.writeLock().lock();
860	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
861	<	lock.writeLock().unlock();
862	<	threadShouldThrow();
863	<	}
864	<	catch (InterruptedException success) {
865	<	}
866	<	}
867	<	});
868	<
975	<	t.start();
976	<	Thread.sleep(SHORT_DELAY_MS);
856	>	final CountDownLatch locked = new CountDownLatch(1);
857	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
858	>	public void realRun() throws InterruptedException {
859	>	lock.writeLock().lock();
860	>	assertTrue(lock.isWriteLocked());
861	>	locked.countDown();
862	>	try { c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); }
863	>	finally { lock.writeLock().unlock(); }
864	>	}});
865	>
866	>	locked.await();
867	>	while (lock.isWriteLocked())
868	>	Thread.yield();
869		t.interrupt();
870	<	t.join(SHORT_DELAY_MS);
871	<	assertFalse(t.isAlive());
870	>	awaitTermination(t, LONG_DELAY_MS);
871	>	assertFalse(lock.isWriteLocked());
872		}
873
874		/**
875		* awaitUntil is interruptible
876		*/
877		public void testAwaitUntil_Interrupt() throws InterruptedException {
878	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
878	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
879		final Condition c = lock.writeLock().newCondition();
880	<	Thread t = new Thread(new Runnable() {
881	<	public void run() {
882	<	try {
883	<	lock.writeLock().lock();
884	<	java.util.Date d = new java.util.Date();
885	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
886	<	lock.writeLock().unlock();
887	<	threadShouldThrow();
888	<	}
889	<	catch (InterruptedException success) {
890	<	}
891	<	}
892	<	});
893	<
1002	<	t.start();
1003	<	Thread.sleep(SHORT_DELAY_MS);
880	>	final CountDownLatch locked = new CountDownLatch(1);
881	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
882	>	public void realRun() throws InterruptedException {
883	>	lock.writeLock().lock();
884	>	assertTrue(lock.isWriteLocked());
885	>	locked.countDown();
886	>	java.util.Date d = new java.util.Date();
887	>	try { c.awaitUntil(new java.util.Date(d.getTime() + 10000)); }
888	>	finally { lock.writeLock().unlock(); }
889	>	}});
890	>
891	>	locked.await();
892	>	while (lock.isWriteLocked())
893	>	Thread.yield();
894		t.interrupt();
895	<	t.join(SHORT_DELAY_MS);
896	<	assertFalse(t.isAlive());
895	>	awaitTermination(t, LONG_DELAY_MS);
896	>	assertFalse(lock.isWriteLocked());
897		}
898
899		/**
900		* signalAll wakes up all threads
901		*/
902		public void testSignalAll() throws InterruptedException {
903	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
903	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
904		final Condition c = lock.writeLock().newCondition();
905	<	Thread t1 = new Thread(new Runnable() {
906	<	public void run() {
907	<	try {
908	<	lock.writeLock().lock();
909	<	c.await();
910	<	lock.writeLock().unlock();
911	<	}
912	<	catch (InterruptedException e) {
913	<	threadUnexpectedException();
914	<	}
915	<	}
916	<	});
917	<
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	<	});
905	>	Thread t1 = newStartedThread(new CheckedRunnable() {
906	>	public void realRun() throws InterruptedException {
907	>	lock.writeLock().lock();
908	>	c.await();
909	>	lock.writeLock().unlock();
910	>	}});
911	>
912	>	Thread t2 = newStartedThread(new CheckedRunnable() {
913	>	public void realRun() throws InterruptedException {
914	>	lock.writeLock().lock();
915	>	c.await();
916	>	lock.writeLock().unlock();
917	>	}});
918
1041	–	t1.start();
1042	–	t2.start();
919		Thread.sleep(SHORT_DELAY_MS);
920		lock.writeLock().lock();
921		c.signalAll();
922		lock.writeLock().unlock();
923	<	t1.join(SHORT_DELAY_MS);
924	<	t2.join(SHORT_DELAY_MS);
1049	<	assertFalse(t1.isAlive());
1050	<	assertFalse(t2.isAlive());
923	>	awaitTermination(t1, LONG_DELAY_MS);
924	>	awaitTermination(t2, LONG_DELAY_MS);
925		}
926
927		/**
#	Line 1074 | Line 948 | public class ReentrantReadWriteLockTest
948		* hasQueuedThreads reports whether there are waiting threads
949		*/
950		public void testhasQueuedThreads() throws InterruptedException {
951	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
951	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
952		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
953		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
954		assertFalse(lock.hasQueuedThreads());
#	Line 1091 | Line 965 | public class ReentrantReadWriteLockTest
965		lock.writeLock().unlock();
966		Thread.sleep(SHORT_DELAY_MS);
967		assertFalse(lock.hasQueuedThreads());
968	<	t1.join();
969	<	t2.join();
968	>	awaitTermination(t1, LONG_DELAY_MS);
969	>	awaitTermination(t2, LONG_DELAY_MS);
970		}
971
972		/**
973		* hasQueuedThread(null) throws NPE
974		*/
975		public void testHasQueuedThreadNPE() {
976	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
976	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
977		try {
978		sync.hasQueuedThread(null);
979		shouldThrow();
980	<	} catch (NullPointerException success) {
1107	<	}
980	>	} catch (NullPointerException success) {}
981		}
982
983		/**
984		* hasQueuedThread reports whether a thread is queued.
985		*/
986		public void testHasQueuedThread() throws InterruptedException {
987	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
987	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
988		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
989		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
990		assertFalse(sync.hasQueuedThread(t1));
#	Line 1133 | Line 1006 | public class ReentrantReadWriteLockTest
1006		assertFalse(sync.hasQueuedThread(t1));
1007		Thread.sleep(SHORT_DELAY_MS);
1008		assertFalse(sync.hasQueuedThread(t2));
1009	<	t1.join();
1010	<	t2.join();
1009	>	awaitTermination(t1, LONG_DELAY_MS);
1010	>	awaitTermination(t2, LONG_DELAY_MS);
1011		}
1012
1013
#	Line 1142 | Line 1015 | public class ReentrantReadWriteLockTest
1015		* getQueueLength reports number of waiting threads
1016		*/
1017		public void testGetQueueLength() throws InterruptedException {
1018	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1018	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1019		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1020		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1021		assertEquals(0, lock.getQueueLength());
#	Line 1159 | Line 1032 | public class ReentrantReadWriteLockTest
1032		lock.writeLock().unlock();
1033		Thread.sleep(SHORT_DELAY_MS);
1034		assertEquals(0, lock.getQueueLength());
1035	<	t1.join();
1036	<	t2.join();
1035	>	awaitTermination(t1, LONG_DELAY_MS);
1036	>	awaitTermination(t2, LONG_DELAY_MS);
1037		}
1038
1039		/**
1040		* getQueuedThreads includes waiting threads
1041		*/
1042		public void testGetQueuedThreads() throws InterruptedException {
1043	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1043	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1044		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1045		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1046		assertTrue(lock.getQueuedThreads().isEmpty());
#	Line 1187 | Line 1060 | public class ReentrantReadWriteLockTest
1060		lock.writeLock().unlock();
1061		Thread.sleep(SHORT_DELAY_MS);
1062		assertTrue(lock.getQueuedThreads().isEmpty());
1063	<	t1.join();
1064	<	t2.join();
1063	>	awaitTermination(t1, LONG_DELAY_MS);
1064	>	awaitTermination(t2, LONG_DELAY_MS);
1065		}
1066
1067		/**
1068		* hasWaiters throws NPE if null
1069		*/
1070		public void testHasWaitersNPE() {
1071	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1071	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1072		try {
1073		lock.hasWaiters(null);
1074		shouldThrow();
#	Line 1206 | Line 1079 | public class ReentrantReadWriteLockTest
1079		* getWaitQueueLength throws NPE if null
1080		*/
1081		public void testGetWaitQueueLengthNPE() {
1082	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1082	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1083		try {
1084		lock.getWaitQueueLength(null);
1085		shouldThrow();
#	Line 1218 | Line 1091 | public class ReentrantReadWriteLockTest
1091		* getWaitingThreads throws NPE if null
1092		*/
1093		public void testGetWaitingThreadsNPE() {
1094	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1094	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1095		try {
1096		lock.getWaitingThreads(null);
1097		shouldThrow();
#	Line 1229 | Line 1102 | public class ReentrantReadWriteLockTest
1102		* hasWaiters throws IAE if not owned
1103		*/
1104		public void testHasWaitersIAE() {
1105	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1105	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1106		final Condition c = lock.writeLock().newCondition();
1107	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1107	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1108		try {
1109		lock2.hasWaiters(c);
1110		shouldThrow();
#	Line 1242 | Line 1115 | public class ReentrantReadWriteLockTest
1115		* hasWaiters throws IMSE if not locked
1116		*/
1117		public void testHasWaitersIMSE() {
1118	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1118	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1119		final Condition c = lock.writeLock().newCondition();
1120		try {
1121		lock.hasWaiters(c);
#	Line 1255 | Line 1128 | public class ReentrantReadWriteLockTest
1128		* getWaitQueueLength throws IAE if not owned
1129		*/
1130		public void testGetWaitQueueLengthIAE() {
1131	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1131	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1132		final Condition c = lock.writeLock().newCondition();
1133	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1133	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1134		try {
1135		lock2.getWaitQueueLength(c);
1136		shouldThrow();
#	Line 1268 | Line 1141 | public class ReentrantReadWriteLockTest
1141		* getWaitQueueLength throws IMSE if not locked
1142		*/
1143		public void testGetWaitQueueLengthIMSE() {
1144	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1144	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1145		final Condition c = lock.writeLock().newCondition();
1146		try {
1147		lock.getWaitQueueLength(c);
#	Line 1281 | Line 1154 | public class ReentrantReadWriteLockTest
1154		* getWaitingThreads throws IAE if not owned
1155		*/
1156		public void testGetWaitingThreadsIAE() {
1157	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1157	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1158		final Condition c = lock.writeLock().newCondition();
1159	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1159	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1160		try {
1161		lock2.getWaitingThreads(c);
1162		shouldThrow();
#	Line 1294 | Line 1167 | public class ReentrantReadWriteLockTest
1167		* getWaitingThreads throws IMSE if not locked
1168		*/
1169		public void testGetWaitingThreadsIMSE() {
1170	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1170	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1171		final Condition c = lock.writeLock().newCondition();
1172		try {
1173		lock.getWaitingThreads(c);
#	Line 1307 | Line 1180 | public class ReentrantReadWriteLockTest
1180		* hasWaiters returns true when a thread is waiting, else false
1181		*/
1182		public void testHasWaiters() throws InterruptedException {
1183	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1183	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1184		final Condition c = lock.writeLock().newCondition();
1185	<	Thread t = new Thread(new Runnable() {
1186	<	public void run() {
1187	<	try {
1188	<	lock.writeLock().lock();
1189	<	threadAssertFalse(lock.hasWaiters(c));
1190	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1191	<	c.await();
1192	<	lock.writeLock().unlock();
1320	<	}
1321	<	catch (InterruptedException e) {
1322	<	threadUnexpectedException();
1323	<	}
1324	<	}
1325	<	});
1185	>	Thread t = newStartedThread(new CheckedRunnable() {
1186	>	public void realRun() throws InterruptedException {
1187	>	lock.writeLock().lock();
1188	>	assertFalse(lock.hasWaiters(c));
1189	>	assertEquals(0, lock.getWaitQueueLength(c));
1190	>	c.await();
1191	>	lock.writeLock().unlock();
1192	>	}});
1193
1327	–	t.start();
1194		Thread.sleep(SHORT_DELAY_MS);
1195		lock.writeLock().lock();
1196		assertTrue(lock.hasWaiters(c));
#	Line 1336 | Line 1202 | public class ReentrantReadWriteLockTest
1202		assertFalse(lock.hasWaiters(c));
1203		assertEquals(0, lock.getWaitQueueLength(c));
1204		lock.writeLock().unlock();
1205	<	t.join(SHORT_DELAY_MS);
1340	<	assertFalse(t.isAlive());
1205	>	awaitTermination(t, LONG_DELAY_MS);
1206		}
1207
1208		/**
1209		* getWaitQueueLength returns number of waiting threads
1210		*/
1211		public void testGetWaitQueueLength() throws InterruptedException {
1212	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1212	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1213		final Condition c = lock.writeLock().newCondition();
1214	<	Thread t = new Thread(new Runnable() {
1215	<	public void run() {
1216	<	try {
1217	<	lock.writeLock().lock();
1218	<	threadAssertFalse(lock.hasWaiters(c));
1219	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1220	<	c.await();
1221	<	lock.writeLock().unlock();
1357	<	}
1358	<	catch (InterruptedException e) {
1359	<	threadUnexpectedException();
1360	<	}
1361	<	}
1362	<	});
1214	>	Thread t = newStartedThread(new CheckedRunnable() {
1215	>	public void realRun() throws InterruptedException {
1216	>	lock.writeLock().lock();
1217	>	assertFalse(lock.hasWaiters(c));
1218	>	assertEquals(0, lock.getWaitQueueLength(c));
1219	>	c.await();
1220	>	lock.writeLock().unlock();
1221	>	}});
1222
1364	–	t.start();
1223		Thread.sleep(SHORT_DELAY_MS);
1224		lock.writeLock().lock();
1225		assertTrue(lock.hasWaiters(c));
#	Line 1373 | Line 1231 | public class ReentrantReadWriteLockTest
1231		assertFalse(lock.hasWaiters(c));
1232		assertEquals(0, lock.getWaitQueueLength(c));
1233		lock.writeLock().unlock();
1234	<	t.join(SHORT_DELAY_MS);
1377	<	assertFalse(t.isAlive());
1234	>	awaitTermination(t, LONG_DELAY_MS);
1235		}
1236
1237
#	Line 1382 | Line 1239 | public class ReentrantReadWriteLockTest
1239		* getWaitingThreads returns only and all waiting threads
1240		*/
1241		public void testGetWaitingThreads() throws InterruptedException {
1242	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1242	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1243		final Condition c = lock.writeLock().newCondition();
1244	<	Thread t1 = new Thread(new Runnable() {
1245	<	public void run() {
1246	<	try {
1247	<	lock.writeLock().lock();
1248	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1249	<	c.await();
1250	<	lock.writeLock().unlock();
1251	<	}
1252	<	catch (InterruptedException e) {
1253	<	threadUnexpectedException();
1254	<	}
1255	<	}
1256	<	});
1257	<
1258	<	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	<	});
1244	>	Thread t1 = new Thread(new CheckedRunnable() {
1245	>	public void realRun() throws InterruptedException {
1246	>	lock.writeLock().lock();
1247	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1248	>	c.await();
1249	>	lock.writeLock().unlock();
1250	>	}});
1251	>
1252	>	Thread t2 = new Thread(new CheckedRunnable() {
1253	>	public void realRun() throws InterruptedException {
1254	>	lock.writeLock().lock();
1255	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1256	>	c.await();
1257	>	lock.writeLock().unlock();
1258	>	}});
1259
1260		lock.writeLock().lock();
1261		assertTrue(lock.getWaitingThreads(c).isEmpty());
#	Line 1430 | Line 1275 | public class ReentrantReadWriteLockTest
1275		assertFalse(lock.hasWaiters(c));
1276		assertTrue(lock.getWaitingThreads(c).isEmpty());
1277		lock.writeLock().unlock();
1278	<	t1.join(SHORT_DELAY_MS);
1279	<	t2.join(SHORT_DELAY_MS);
1435	<	assertFalse(t1.isAlive());
1436	<	assertFalse(t2.isAlive());
1278	>	awaitTermination(t1, LONG_DELAY_MS);
1279	>	awaitTermination(t2, LONG_DELAY_MS);
1280		}
1281
1282		/**

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