ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.56 by jsr166, Tue May 3 06:08:49 2011 UTC vs.
Revision 1.65 by jsr166, Tue May 31 16:16:24 2011 UTC

#	Line 8 | Line 8
8
9		import junit.framework.*;
10		import java.util.concurrent.atomic.AtomicBoolean;
11	<	import java.util.concurrent.locks.*;
12	<	import java.util.concurrent.*;
11	>	import java.util.concurrent.locks.Condition;
12	>	import java.util.concurrent.locks.Lock;
13	>	import java.util.concurrent.locks.ReentrantReadWriteLock;
14	>	import java.util.concurrent.CountDownLatch;
15		import static java.util.concurrent.TimeUnit.MILLISECONDS;
14	–	import java.io.*;
16		import java.util.*;
17
18		public class ReentrantReadWriteLockTest extends JSR166TestCase {
#	Line 50 | Line 51 | public class ReentrantReadWriteLockTest
51		*/
52		static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock {
53		PublicReentrantReadWriteLock() { super(); }
54	+	PublicReentrantReadWriteLock(boolean fair) { super(fair); }
55	+	public Thread getOwner() {
56	+	return super.getOwner();
57	+	}
58		public Collection<Thread> getQueuedThreads() {
59		return super.getQueuedThreads();
60		}
#	Line 61 | Line 66 | public class ReentrantReadWriteLockTest
66		/**
67		* Releases write lock, checking that it had a hold count of 1.
68		*/
69	<	void releaseWriteLock(ReentrantReadWriteLock lock) {
69	>	void releaseWriteLock(PublicReentrantReadWriteLock lock) {
70		ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock();
71	<	assertTrue(writeLock.isHeldByCurrentThread());
71	>	assertWriteLockedByMoi(lock);
72	>	assertEquals(1, lock.getWriteHoldCount());
73		writeLock.unlock();
74	<	assertFalse(writeLock.isHeldByCurrentThread());
74	>	assertNotWriteLocked(lock);
75		}
76
77		/**
78		* Spin-waits until lock.hasQueuedThread(t) becomes true.
79		*/
80	<	void waitForQueuedThread(ReentrantReadWriteLock lock, Thread t) {
80	>	void waitForQueuedThread(PublicReentrantReadWriteLock lock, Thread t) {
81		long startTime = System.nanoTime();
82		while (!lock.hasQueuedThread(t)) {
83		if (millisElapsedSince(startTime) > LONG_DELAY_MS)
84	<	throw new AssertionError("timed out");
84	>	throw new AssertionFailedError("timed out");
85		Thread.yield();
86		}
87	+	assertTrue(t.isAlive());
88	+	assertTrue(lock.getOwner() != t);
89		}
90
91		/**
92		* Checks that lock is not write-locked.
93		*/
94	<	void assertNotWriteLocked(ReentrantReadWriteLock lock) {
94	>	void assertNotWriteLocked(PublicReentrantReadWriteLock lock) {
95		assertFalse(lock.isWriteLocked());
96		assertFalse(lock.isWriteLockedByCurrentThread());
97	+	assertFalse(lock.writeLock().isHeldByCurrentThread());
98		assertEquals(0, lock.getWriteHoldCount());
99	+	assertEquals(0, lock.writeLock().getHoldCount());
100	+	assertNull(lock.getOwner());
101	+	}
102	+
103	+	/**
104	+	* Checks that lock is write-locked by the given thread.
105	+	*/
106	+	void assertWriteLockedBy(PublicReentrantReadWriteLock lock, Thread t) {
107	+	assertTrue(lock.isWriteLocked());
108	+	assertSame(t, lock.getOwner());
109	+	assertEquals(t == Thread.currentThread(),
110	+	lock.isWriteLockedByCurrentThread());
111	+	assertEquals(t == Thread.currentThread(),
112	+	lock.writeLock().isHeldByCurrentThread());
113	+	assertEquals(t == Thread.currentThread(),
114	+	lock.getWriteHoldCount() > 0);
115	+	assertEquals(t == Thread.currentThread(),
116	+	lock.writeLock().getHoldCount() > 0);
117	+	assertEquals(0, lock.getReadLockCount());
118	+	}
119	+
120	+	/**
121	+	* Checks that lock is write-locked by the current thread.
122	+	*/
123	+	void assertWriteLockedByMoi(PublicReentrantReadWriteLock lock) {
124	+	assertWriteLockedBy(lock, Thread.currentThread());
125		}
126
127		/**
#	Line 111 | Line 146 | public class ReentrantReadWriteLockTest
146		lock.writeLock().unlock();
147		}
148
149	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil };
150	+
151		/**
152	<	* Constructor sets given fairness, and is in unlocked state
152	>	* Awaits condition using the specified AwaitMethod.
153		*/
154	<	public void testConstructor() {
155	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
156	<	assertFalse(rl.isFair());
157	<	assertFalse(rl.isWriteLocked());
158	<	assertEquals(0, rl.getReadLockCount());
159	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
160	<	assertTrue(r2.isFair());
161	<	assertFalse(r2.isWriteLocked());
162	<	assertEquals(0, r2.getReadLockCount());
163	<	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
164	<	assertFalse(r3.isFair());
165	<	assertFalse(r3.isWriteLocked());
166	<	assertEquals(0, r3.getReadLockCount());
154	>	void await(Condition c, AwaitMethod awaitMethod)
155	>	throws InterruptedException {
156	>	switch (awaitMethod) {
157	>	case await:
158	>	c.await();
159	>	break;
160	>	case awaitTimed:
161	>	assertTrue(c.await(2 * LONG_DELAY_MS, MILLISECONDS));
162	>	break;
163	>	case awaitNanos:
164	>	long nanosRemaining = c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
165	>	assertTrue(nanosRemaining > 0);
166	>	break;
167	>	case awaitUntil:
168	>	java.util.Date d = new java.util.Date();
169	>	assertTrue(c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS)));
170	>	break;
171	>	}
172		}
173
174		/**
175	<	* write-locking and read-locking an unlocked lock succeed
175	>	* Constructor sets given fairness, and is in unlocked state
176		*/
177	<	public void testLock() {
178	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
179	<	rl.writeLock().lock();
180	<	assertTrue(rl.isWriteLocked());
181	<	assertTrue(rl.isWriteLockedByCurrentThread());
182	<	assertTrue(rl.writeLock().isHeldByCurrentThread());
183	<	assertEquals(0, rl.getReadLockCount());
184	<	rl.writeLock().unlock();
185	<	assertFalse(rl.isWriteLocked());
186	<	assertFalse(rl.isWriteLockedByCurrentThread());
187	<	assertFalse(rl.writeLock().isHeldByCurrentThread());
188	<	assertEquals(0, rl.getReadLockCount());
189	<	rl.readLock().lock();
190	<	assertFalse(rl.isWriteLocked());
191	<	assertFalse(rl.isWriteLockedByCurrentThread());
192	<	assertEquals(1, rl.getReadLockCount());
193	<	rl.readLock().unlock();
152	<	assertFalse(rl.isWriteLocked());
153	<	assertFalse(rl.isWriteLockedByCurrentThread());
154	<	assertEquals(0, rl.getReadLockCount());
177	>	public void testConstructor() {
178	>	PublicReentrantReadWriteLock lock;
179	>
180	>	lock = new PublicReentrantReadWriteLock();
181	>	assertFalse(lock.isFair());
182	>	assertNotWriteLocked(lock);
183	>	assertEquals(0, lock.getReadLockCount());
184	>
185	>	lock = new PublicReentrantReadWriteLock(true);
186	>	assertTrue(lock.isFair());
187	>	assertNotWriteLocked(lock);
188	>	assertEquals(0, lock.getReadLockCount());
189	>
190	>	lock = new PublicReentrantReadWriteLock(false);
191	>	assertFalse(lock.isFair());
192	>	assertNotWriteLocked(lock);
193	>	assertEquals(0, lock.getReadLockCount());
194		}
195
196		/**
197	<	* locking an unlocked fair lock succeeds
198	<	*/
199	<	public void testFairLock() {
200	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
201	<	rl.writeLock().lock();
202	<	assertTrue(rl.isWriteLocked());
203	<	assertTrue(rl.isWriteLockedByCurrentThread());
204	<	assertTrue(rl.writeLock().isHeldByCurrentThread());
205	<	assertEquals(0, rl.getReadLockCount());
206	<	rl.writeLock().unlock();
207	<	assertFalse(rl.isWriteLocked());
208	<	assertFalse(rl.isWriteLockedByCurrentThread());
209	<	assertFalse(rl.writeLock().isHeldByCurrentThread());
210	<	assertEquals(0, rl.getReadLockCount());
211	<	rl.readLock().lock();
212	<	assertFalse(rl.isWriteLocked());
213	<	assertFalse(rl.isWriteLockedByCurrentThread());
214	<	assertEquals(1, rl.getReadLockCount());
215	<	rl.readLock().unlock();
177	<	assertFalse(rl.isWriteLocked());
178	<	assertFalse(rl.isWriteLockedByCurrentThread());
179	<	assertEquals(0, rl.getReadLockCount());
197	>	* write-locking and read-locking an unlocked lock succeed
198	>	*/
199	>	public void testLock()      { testLock(false); }
200	>	public void testLock_fair() { testLock(true); }
201	>	public void testLock(boolean fair) {
202	>	PublicReentrantReadWriteLock lock =
203	>	new PublicReentrantReadWriteLock(fair);
204	>	assertNotWriteLocked(lock);
205	>	lock.writeLock().lock();
206	>	assertWriteLockedByMoi(lock);
207	>	lock.writeLock().unlock();
208	>	assertNotWriteLocked(lock);
209	>	assertEquals(0, lock.getReadLockCount());
210	>	lock.readLock().lock();
211	>	assertNotWriteLocked(lock);
212	>	assertEquals(1, lock.getReadLockCount());
213	>	lock.readLock().unlock();
214	>	assertNotWriteLocked(lock);
215	>	assertEquals(0, lock.getReadLockCount());
216		}
217
218		/**
219		* getWriteHoldCount returns number of recursive holds
220		*/
221	<	public void testGetWriteHoldCount() {
222	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
221	>	public void testGetWriteHoldCount()      { testGetWriteHoldCount(false); }
222	>	public void testGetWriteHoldCount_fair() { testGetWriteHoldCount(true); }
223	>	public void testGetWriteHoldCount(boolean fair) {
224	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
225		for (int i = 1; i <= SIZE; i++) {
226		lock.writeLock().lock();
227		assertEquals(i,lock.getWriteHoldCount());
#	Line 195 | Line 233 | public class ReentrantReadWriteLockTest
233		}
234
235		/**
236	<	* WriteLock.getHoldCount returns number of recursive holds
236	>	* writelock.getHoldCount returns number of recursive holds
237		*/
238	<	public void testGetHoldCount() {
239	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
238	>	public void testGetHoldCount()      { testGetHoldCount(false); }
239	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
240	>	public void testGetHoldCount(boolean fair) {
241	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
242		for (int i = 1; i <= SIZE; i++) {
243		lock.writeLock().lock();
244		assertEquals(i,lock.writeLock().getHoldCount());
#	Line 212 | Line 252 | public class ReentrantReadWriteLockTest
252		/**
253		* getReadHoldCount returns number of recursive holds
254		*/
255	<	public void testGetReadHoldCount() {
256	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
255	>	public void testGetReadHoldCount()      { testGetReadHoldCount(false); }
256	>	public void testGetReadHoldCount_fair() { testGetReadHoldCount(true); }
257	>	public void testGetReadHoldCount(boolean fair) {
258	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
259		for (int i = 1; i <= SIZE; i++) {
260		lock.readLock().lock();
261		assertEquals(i,lock.getReadHoldCount());
#	Line 227 | Line 269 | public class ReentrantReadWriteLockTest
269		/**
270		* write-unlocking an unlocked lock throws IllegalMonitorStateException
271		*/
272	<	public void testWriteUnlock_IllegalMonitorStateException() {
273	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
272	>	public void testWriteUnlock_IMSE()      { testWriteUnlock_IMSE(false); }
273	>	public void testWriteUnlock_IMSE_fair() { testWriteUnlock_IMSE(true); }
274	>	public void testWriteUnlock_IMSE(boolean fair) {
275	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
276		try {
277	<	rl.writeLock().unlock();
277	>	lock.writeLock().unlock();
278		shouldThrow();
279		} catch (IllegalMonitorStateException success) {}
280		}
#	Line 238 | Line 282 | public class ReentrantReadWriteLockTest
282		/**
283		* read-unlocking an unlocked lock throws IllegalMonitorStateException
284		*/
285	<	public void testReadUnlock_IllegalMonitorStateException() {
286	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
285	>	public void testReadUnlock_IMSE()      { testReadUnlock_IMSE(false); }
286	>	public void testReadUnlock_IMSE_fair() { testReadUnlock_IMSE(true); }
287	>	public void testReadUnlock_IMSE(boolean fair) {
288	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
289		try {
290	<	rl.readLock().unlock();
290	>	lock.readLock().unlock();
291		shouldThrow();
292		} catch (IllegalMonitorStateException success) {}
293		}
#	Line 249 | Line 295 | public class ReentrantReadWriteLockTest
295		/**
296		* write-lockInterruptibly is interruptible
297		*/
298	<	public void testWriteLockInterruptibly_Interrupted() throws Exception {
299	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
298	>	public void testWriteLockInterruptibly_Interruptible()      { testWriteLockInterruptibly_Interruptible(false); }
299	>	public void testWriteLockInterruptibly_Interruptible_fair() { testWriteLockInterruptibly_Interruptible(true); }
300	>	public void testWriteLockInterruptibly_Interruptible(boolean fair) {
301	>	final PublicReentrantReadWriteLock lock =
302	>	new PublicReentrantReadWriteLock(fair);
303		lock.writeLock().lock();
304		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
305		public void realRun() throws InterruptedException {
#	Line 266 | Line 315 | public class ReentrantReadWriteLockTest
315		/**
316		* timed write-tryLock is interruptible
317		*/
318	<	public void testWriteTryLock_Interrupted() throws InterruptedException {
319	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
318	>	public void testWriteTryLock_Interruptible()      { testWriteTryLock_Interruptible(false); }
319	>	public void testWriteTryLock_Interruptible_fair() { testWriteTryLock_Interruptible(true); }
320	>	public void testWriteTryLock_Interruptible(boolean fair) {
321	>	final PublicReentrantReadWriteLock lock =
322	>	new PublicReentrantReadWriteLock(fair);
323		lock.writeLock().lock();
324		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
325		public void realRun() throws InterruptedException {
326	<	lock.writeLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
326	>	lock.writeLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
327		}});
328
329		waitForQueuedThread(lock, t);
#	Line 283 | Line 335 | public class ReentrantReadWriteLockTest
335		/**
336		* read-lockInterruptibly is interruptible
337		*/
338	<	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
339	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
338	>	public void testReadLockInterruptibly_Interruptible()      { testReadLockInterruptibly_Interruptible(false); }
339	>	public void testReadLockInterruptibly_Interruptible_fair() { testReadLockInterruptibly_Interruptible(true); }
340	>	public void testReadLockInterruptibly_Interruptible(boolean fair) {
341	>	final PublicReentrantReadWriteLock lock =
342	>	new PublicReentrantReadWriteLock(fair);
343		lock.writeLock().lock();
344		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
345		public void realRun() throws InterruptedException {
#	Line 300 | Line 355 | public class ReentrantReadWriteLockTest
355		/**
356		* timed read-tryLock is interruptible
357		*/
358	<	public void testReadTryLock_Interrupted() throws InterruptedException {
359	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
358	>	public void testReadTryLock_Interruptible()      { testReadTryLock_Interruptible(false); }
359	>	public void testReadTryLock_Interruptible_fair() { testReadTryLock_Interruptible(true); }
360	>	public void testReadTryLock_Interruptible(boolean fair) {
361	>	final PublicReentrantReadWriteLock lock =
362	>	new PublicReentrantReadWriteLock(fair);
363		lock.writeLock().lock();
364		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
365		public void realRun() throws InterruptedException {
366	<	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
366	>	lock.readLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
367		}});
368
369		waitForQueuedThread(lock, t);
#	Line 315 | Line 373 | public class ReentrantReadWriteLockTest
373		}
374
375		/**
376	+	* write-tryLock on an unlocked lock succeeds
377	+	*/
378	+	public void testWriteTryLock()      { testWriteTryLock(false); }
379	+	public void testWriteTryLock_fair() { testWriteTryLock(true); }
380	+	public void testWriteTryLock(boolean fair) {
381	+	final PublicReentrantReadWriteLock lock =
382	+	new PublicReentrantReadWriteLock(fair);
383	+	assertTrue(lock.writeLock().tryLock());
384	+	assertWriteLockedByMoi(lock);
385	+	assertTrue(lock.writeLock().tryLock());
386	+	assertWriteLockedByMoi(lock);
387	+	lock.writeLock().unlock();
388	+	releaseWriteLock(lock);
389	+	}
390	+
391	+	/**
392		* write-tryLock fails if locked
393		*/
394	<	public void testWriteTryLockWhenLocked() throws InterruptedException {
395	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
394	>	public void testWriteTryLockWhenLocked()      { testWriteTryLockWhenLocked(false); }
395	>	public void testWriteTryLockWhenLocked_fair() { testWriteTryLockWhenLocked(true); }
396	>	public void testWriteTryLockWhenLocked(boolean fair) {
397	>	final PublicReentrantReadWriteLock lock =
398	>	new PublicReentrantReadWriteLock(fair);
399		lock.writeLock().lock();
400		Thread t = newStartedThread(new CheckedRunnable() {
401		public void realRun() {
#	Line 332 | Line 409 | public class ReentrantReadWriteLockTest
409		/**
410		* read-tryLock fails if locked
411		*/
412	<	public void testReadTryLockWhenLocked() throws InterruptedException {
413	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
412	>	public void testReadTryLockWhenLocked()      { testReadTryLockWhenLocked(false); }
413	>	public void testReadTryLockWhenLocked_fair() { testReadTryLockWhenLocked(true); }
414	>	public void testReadTryLockWhenLocked(boolean fair) {
415	>	final PublicReentrantReadWriteLock lock =
416	>	new PublicReentrantReadWriteLock(fair);
417		lock.writeLock().lock();
418		Thread t = newStartedThread(new CheckedRunnable() {
419		public void realRun() {
#	Line 347 | Line 427 | public class ReentrantReadWriteLockTest
427		/**
428		* Multiple threads can hold a read lock when not write-locked
429		*/
430	<	public void testMultipleReadLocks() throws InterruptedException {
431	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
430	>	public void testMultipleReadLocks()      { testMultipleReadLocks(false); }
431	>	public void testMultipleReadLocks_fair() { testMultipleReadLocks(true); }
432	>	public void testMultipleReadLocks(boolean fair) {
433	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
434		lock.readLock().lock();
435		Thread t = newStartedThread(new CheckedRunnable() {
436	<	public void realRun() {
436	>	public void realRun() throws InterruptedException {
437		assertTrue(lock.readLock().tryLock());
438		lock.readLock().unlock();
439	+	assertTrue(lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS));
440	+	lock.readLock().unlock();
441	+	lock.readLock().lock();
442	+	lock.readLock().unlock();
443		}});
444
445		awaitTermination(t);
#	Line 361 | Line 447 | public class ReentrantReadWriteLockTest
447		}
448
449		/**
450	<	* A writelock succeeds only after reading threads unlock
450	>	* A writelock succeeds only after a reading thread unlocks
451		*/
452	<	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
453	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
452	>	public void testWriteAfterReadLock()      { testWriteAfterReadLock(false); }
453	>	public void testWriteAfterReadLock_fair() { testWriteAfterReadLock(true); }
454	>	public void testWriteAfterReadLock(boolean fair) {
455	>	final PublicReentrantReadWriteLock lock =
456	>	new PublicReentrantReadWriteLock(fair);
457		lock.readLock().lock();
458	<	Thread t1 = newStartedThread(new CheckedRunnable() {
370	<	public void realRun() {
371	<	lock.readLock().lock();
372	<	lock.readLock().unlock();
373	<	}});
374	<	Thread t2 = newStartedThread(new CheckedRunnable() {
458	>	Thread t = newStartedThread(new CheckedRunnable() {
459		public void realRun() {
460	+	assertEquals(1, lock.getReadLockCount());
461		lock.writeLock().lock();
462	+	assertEquals(0, lock.getReadLockCount());
463		lock.writeLock().unlock();
464		}});
465	<
380	<	awaitTermination(t1);
381	<	waitForQueuedThread(lock, t2);
465	>	waitForQueuedThread(lock, t);
466		assertNotWriteLocked(lock);
467	+	assertEquals(1, lock.getReadLockCount());
468		lock.readLock().unlock();
469	<	awaitTermination(t2);
469	>	assertEquals(0, lock.getReadLockCount());
470	>	awaitTermination(t);
471	>	assertNotWriteLocked(lock);
472		}
473
474		/**
475	<	* Readlocks succeed only after a writing thread unlocks
475	>	* A writelock succeeds only after reading threads unlock
476		*/
477	<	public void testReadAfterWriteLock() throws InterruptedException {
478	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
479	<	lock.writeLock().lock();
477	>	public void testWriteAfterMultipleReadLocks()      { testWriteAfterMultipleReadLocks(false); }
478	>	public void testWriteAfterMultipleReadLocks_fair() { testWriteAfterMultipleReadLocks(true); }
479	>	public void testWriteAfterMultipleReadLocks(boolean fair) {
480	>	final PublicReentrantReadWriteLock lock =
481	>	new PublicReentrantReadWriteLock(fair);
482	>	lock.readLock().lock();
483	>	lock.readLock().lock();
484		Thread t1 = newStartedThread(new CheckedRunnable() {
485		public void realRun() {
486		lock.readLock().lock();
487	+	assertEquals(3, lock.getReadLockCount());
488		lock.readLock().unlock();
489		}});
490	+	awaitTermination(t1);
491	+
492		Thread t2 = newStartedThread(new CheckedRunnable() {
493		public void realRun() {
494	<	lock.readLock().lock();
495	<	lock.readLock().unlock();
494	>	assertEquals(2, lock.getReadLockCount());
495	>	lock.writeLock().lock();
496	>	assertEquals(0, lock.getReadLockCount());
497	>	lock.writeLock().unlock();
498		}});
403	–
404	–	waitForQueuedThread(lock, t1);
499		waitForQueuedThread(lock, t2);
500	<	releaseWriteLock(lock);
501	<	awaitTermination(t1);
500	>	assertNotWriteLocked(lock);
501	>	assertEquals(2, lock.getReadLockCount());
502	>	lock.readLock().unlock();
503	>	lock.readLock().unlock();
504	>	assertEquals(0, lock.getReadLockCount());
505		awaitTermination(t2);
506	+	assertNotWriteLocked(lock);
507		}
508
509		/**
510	<	* Read trylock succeeds if write locked by current thread
510	>	* A thread that tries to acquire a fair read lock (non-reentrantly)
511	>	* will block if there is a waiting writer thread
512		*/
513	<	public void testReadHoldingWriteLock() {
514	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
515	<	lock.writeLock().lock();
516	<	assertTrue(lock.readLock().tryLock());
418	<	lock.readLock().unlock();
419	<	lock.writeLock().unlock();
420	<	}
513	>	public void testReaderWriterReaderFairFifo() {
514	>	final PublicReentrantReadWriteLock lock =
515	>	new PublicReentrantReadWriteLock(true);
516	>	final AtomicBoolean t1GotLock = new AtomicBoolean(false);
517
422	–	/**
423	–	* Read lock succeeds if write locked by current thread even if
424	–	* other threads are waiting for readlock
425	–	*/
426	–	public void testReadHoldingWriteLock2() throws InterruptedException {
427	–	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
428	–	lock.writeLock().lock();
518		lock.readLock().lock();
430	–	lock.readLock().unlock();
431	–
519		Thread t1 = newStartedThread(new CheckedRunnable() {
520		public void realRun() {
521	<	lock.readLock().lock();
522	<	lock.readLock().unlock();
521	>	assertEquals(1, lock.getReadLockCount());
522	>	lock.writeLock().lock();
523	>	assertEquals(0, lock.getReadLockCount());
524	>	t1GotLock.set(true);
525	>	lock.writeLock().unlock();
526		}});
527	+	waitForQueuedThread(lock, t1);
528	+
529		Thread t2 = newStartedThread(new CheckedRunnable() {
530		public void realRun() {
531	+	assertEquals(1, lock.getReadLockCount());
532		lock.readLock().lock();
533	+	assertEquals(1, lock.getReadLockCount());
534	+	assertTrue(t1GotLock.get());
535		lock.readLock().unlock();
536		}});
442	–
443	–	waitForQueuedThread(lock, t1);
537		waitForQueuedThread(lock, t2);
538	<	assertTrue(lock.isWriteLockedByCurrentThread());
539	<	lock.readLock().lock();
538	>	assertTrue(t1.isAlive());
539	>	assertNotWriteLocked(lock);
540	>	assertEquals(1, lock.getReadLockCount());
541		lock.readLock().unlock();
448	–	releaseWriteLock(lock);
542		awaitTermination(t1);
543		awaitTermination(t2);
544	+	assertNotWriteLocked(lock);
545		}
546
547		/**
548	<	* Read lock succeeds if write locked by current thread even if
455	<	* other threads are waiting for writelock
548	>	* Readlocks succeed only after a writing thread unlocks
549		*/
550	<	public void testReadHoldingWriteLock3() throws InterruptedException {
551	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
550	>	public void testReadAfterWriteLock()      { testReadAfterWriteLock(false); }
551	>	public void testReadAfterWriteLock_fair() { testReadAfterWriteLock(true); }
552	>	public void testReadAfterWriteLock(boolean fair) {
553	>	final PublicReentrantReadWriteLock lock =
554	>	new PublicReentrantReadWriteLock(fair);
555		lock.writeLock().lock();
460	–	lock.readLock().lock();
461	–	lock.readLock().unlock();
462	–
556		Thread t1 = newStartedThread(new CheckedRunnable() {
557		public void realRun() {
558	<	lock.writeLock().lock();
559	<	lock.writeLock().unlock();
558	>	lock.readLock().lock();
559	>	lock.readLock().unlock();
560		}});
561		Thread t2 = newStartedThread(new CheckedRunnable() {
562		public void realRun() {
563	<	lock.writeLock().lock();
564	<	lock.writeLock().unlock();
563	>	lock.readLock().lock();
564	>	lock.readLock().unlock();
565		}});
566
567		waitForQueuedThread(lock, t1);
568		waitForQueuedThread(lock, t2);
476	–	assertTrue(lock.isWriteLockedByCurrentThread());
477	–	lock.readLock().lock();
478	–	lock.readLock().unlock();
569		releaseWriteLock(lock);
570		awaitTermination(t1);
571		awaitTermination(t2);
572		}
573
574		/**
575	<	* Write lock succeeds if write locked by current thread even if
486	<	* other threads are waiting for writelock
575	>	* Read trylock succeeds if write locked by current thread
576		*/
577	<	public void testWriteHoldingWriteLock4() throws InterruptedException {
578	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
579	<	lock.writeLock().lock();
577	>	public void testReadHoldingWriteLock()      { testReadHoldingWriteLock(false); }
578	>	public void testReadHoldingWriteLock_fair() { testReadHoldingWriteLock(true); }
579	>	public void testReadHoldingWriteLock(boolean fair) {
580	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
581		lock.writeLock().lock();
582	+	assertTrue(lock.readLock().tryLock());
583	+	lock.readLock().unlock();
584		lock.writeLock().unlock();
585	+	}
586	+
587	+	/**
588	+	* Read trylock succeeds (barging) even in the presence of waiting
589	+	* readers and/or writers
590	+	*/
591	+	public void testReadTryLockBarging()      { testReadTryLockBarging(false); }
592	+	public void testReadTryLockBarging_fair() { testReadTryLockBarging(true); }
593	+	public void testReadTryLockBarging(boolean fair) {
594	+	final PublicReentrantReadWriteLock lock =
595	+	new PublicReentrantReadWriteLock(fair);
596	+	lock.readLock().lock();
597
598		Thread t1 = newStartedThread(new CheckedRunnable() {
599		public void realRun() {
600		lock.writeLock().lock();
601		lock.writeLock().unlock();
602		}});
603	+
604	+	waitForQueuedThread(lock, t1);
605	+
606		Thread t2 = newStartedThread(new CheckedRunnable() {
607		public void realRun() {
608	<	lock.writeLock().lock();
609	<	lock.writeLock().unlock();
608	>	lock.readLock().lock();
609	>	lock.readLock().unlock();
610		}});
611
612	<	waitForQueuedThread(lock, t1);
613	<	waitForQueuedThread(lock, t2);
507	<	assertTrue(lock.isWriteLockedByCurrentThread());
508	<	assertEquals(1, lock.getWriteHoldCount());
509	<	lock.writeLock().lock();
510	<	assertTrue(lock.isWriteLockedByCurrentThread());
511	<	assertEquals(2, lock.getWriteHoldCount());
512	<	lock.writeLock().unlock();
513	<	releaseWriteLock(lock);
514	<	awaitTermination(t1);
515	<	awaitTermination(t2);
516	<	}
612	>	if (fair)
613	>	waitForQueuedThread(lock, t2);
614
615	<	/**
616	<	* Fair Read trylock succeeds if write locked by current thread
617	<	*/
618	<	public void testReadHoldingWriteLockFair() {
619	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
620	<	lock.writeLock().lock();
621	<	assertTrue(lock.readLock().tryLock());
615	>	Thread t3 = newStartedThread(new CheckedRunnable() {
616	>	public void realRun() {
617	>	lock.readLock().tryLock();
618	>	lock.readLock().unlock();
619	>	}});
620	>
621	>	assertTrue(lock.getReadLockCount() > 0);
622	>	awaitTermination(t3);
623	>	assertTrue(t1.isAlive());
624	>	if (fair) assertTrue(t2.isAlive());
625		lock.readLock().unlock();
626	<	lock.writeLock().unlock();
626	>	awaitTermination(t1);
627	>	awaitTermination(t2);
628		}
629
630		/**
631	<	* Fair Read lock succeeds if write locked by current thread even if
631	>	* Read lock succeeds if write locked by current thread even if
632		* other threads are waiting for readlock
633		*/
634	<	public void testReadHoldingWriteLockFair2() throws InterruptedException {
635	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
634	>	public void testReadHoldingWriteLock2()      { testReadHoldingWriteLock2(false); }
635	>	public void testReadHoldingWriteLock2_fair() { testReadHoldingWriteLock2(true); }
636	>	public void testReadHoldingWriteLock2(boolean fair) {
637	>	final PublicReentrantReadWriteLock lock =
638	>	new PublicReentrantReadWriteLock(fair);
639		lock.writeLock().lock();
640		lock.readLock().lock();
641		lock.readLock().unlock();
#	Line 549 | Line 653 | public class ReentrantReadWriteLockTest
653
654		waitForQueuedThread(lock, t1);
655		waitForQueuedThread(lock, t2);
656	<	assertTrue(lock.isWriteLockedByCurrentThread());
656	>	assertWriteLockedByMoi(lock);
657		lock.readLock().lock();
658		lock.readLock().unlock();
659		releaseWriteLock(lock);
#	Line 558 | Line 662 | public class ReentrantReadWriteLockTest
662		}
663
664		/**
665	<	* Fair Read lock succeeds if write locked by current thread even if
665	>	* Read lock succeeds if write locked by current thread even if
666		* other threads are waiting for writelock
667		*/
668	<	public void testReadHoldingWriteLockFair3() throws InterruptedException {
669	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
668	>	public void testReadHoldingWriteLock3()      { testReadHoldingWriteLock3(false); }
669	>	public void testReadHoldingWriteLock3_fair() { testReadHoldingWriteLock3(true); }
670	>	public void testReadHoldingWriteLock3(boolean fair) {
671	>	final PublicReentrantReadWriteLock lock =
672	>	new PublicReentrantReadWriteLock(fair);
673		lock.writeLock().lock();
674		lock.readLock().lock();
675		lock.readLock().unlock();
#	Line 580 | Line 687 | public class ReentrantReadWriteLockTest
687
688		waitForQueuedThread(lock, t1);
689		waitForQueuedThread(lock, t2);
690	<	assertTrue(lock.isWriteLockedByCurrentThread());
690	>	assertWriteLockedByMoi(lock);
691		lock.readLock().lock();
692		lock.readLock().unlock();
693	<	releaseWriteLock(lock);
693	>	assertWriteLockedByMoi(lock);
694	>	lock.writeLock().unlock();
695		awaitTermination(t1);
696		awaitTermination(t2);
697		}
698
699		/**
700	<	* Fair Write lock succeeds if write locked by current thread even if
700	>	* Write lock succeeds if write locked by current thread even if
701		* other threads are waiting for writelock
702		*/
703	<	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
704	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
703	>	public void testWriteHoldingWriteLock4()      { testWriteHoldingWriteLock4(false); }
704	>	public void testWriteHoldingWriteLock4_fair() { testWriteHoldingWriteLock4(true); }
705	>	public void testWriteHoldingWriteLock4(boolean fair) {
706	>	final PublicReentrantReadWriteLock lock =
707	>	new PublicReentrantReadWriteLock(fair);
708	>	lock.writeLock().lock();
709		lock.writeLock().lock();
710	+	lock.writeLock().unlock();
711	+
712		Thread t1 = newStartedThread(new CheckedRunnable() {
713		public void realRun() {
714		lock.writeLock().lock();
#	Line 608 | Line 722 | public class ReentrantReadWriteLockTest
722
723		waitForQueuedThread(lock, t1);
724		waitForQueuedThread(lock, t2);
725	<	assertTrue(lock.isWriteLockedByCurrentThread());
725	>	assertWriteLockedByMoi(lock);
726		assertEquals(1, lock.getWriteHoldCount());
727		lock.writeLock().lock();
728	+	assertWriteLockedByMoi(lock);
729		assertEquals(2, lock.getWriteHoldCount());
730		lock.writeLock().unlock();
731	<	lock.writeLock().lock();
731	>	assertWriteLockedByMoi(lock);
732	>	assertEquals(1, lock.getWriteHoldCount());
733		lock.writeLock().unlock();
618	–	releaseWriteLock(lock);
734		awaitTermination(t1);
735		awaitTermination(t2);
736		}
#	Line 623 | Line 738 | public class ReentrantReadWriteLockTest
738		/**
739		* Read tryLock succeeds if readlocked but not writelocked
740		*/
741	<	public void testTryLockWhenReadLocked() throws InterruptedException {
742	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
741	>	public void testTryLockWhenReadLocked()      { testTryLockWhenReadLocked(false); }
742	>	public void testTryLockWhenReadLocked_fair() { testTryLockWhenReadLocked(true); }
743	>	public void testTryLockWhenReadLocked(boolean fair) {
744	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
745		lock.readLock().lock();
746		Thread t = newStartedThread(new CheckedRunnable() {
747		public void realRun() {
#	Line 639 | Line 756 | public class ReentrantReadWriteLockTest
756		/**
757		* write tryLock fails when readlocked
758		*/
759	<	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
760	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
761	<	lock.readLock().lock();
762	<	Thread t = newStartedThread(new CheckedRunnable() {
646	<	public void realRun() {
647	<	assertFalse(lock.writeLock().tryLock());
648	<	}});
649	<
650	<	awaitTermination(t);
651	<	lock.readLock().unlock();
652	<	}
653	<
654	<	/**
655	<	* Fair Read tryLock succeeds if readlocked but not writelocked
656	<	*/
657	<	public void testTryLockWhenReadLockedFair() throws InterruptedException {
658	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
659	<	lock.readLock().lock();
660	<	Thread t = newStartedThread(new CheckedRunnable() {
661	<	public void realRun() {
662	<	assertTrue(lock.readLock().tryLock());
663	<	lock.readLock().unlock();
664	<	}});
665	<
666	<	awaitTermination(t);
667	<	lock.readLock().unlock();
668	<	}
669	<
670	<	/**
671	<	* Fair write tryLock fails when readlocked
672	<	*/
673	<	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
674	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
759	>	public void testWriteTryLockWhenReadLocked()      { testWriteTryLockWhenReadLocked(false); }
760	>	public void testWriteTryLockWhenReadLocked_fair() { testWriteTryLockWhenReadLocked(true); }
761	>	public void testWriteTryLockWhenReadLocked(boolean fair) {
762	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
763		lock.readLock().lock();
764		Thread t = newStartedThread(new CheckedRunnable() {
765		public void realRun() {
#	Line 685 | Line 773 | public class ReentrantReadWriteLockTest
773		/**
774		* write timed tryLock times out if locked
775		*/
776	<	public void testWriteTryLock_Timeout() throws InterruptedException {
777	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
776	>	public void testWriteTryLock_Timeout()      { testWriteTryLock_Timeout(false); }
777	>	public void testWriteTryLock_Timeout_fair() { testWriteTryLock_Timeout(true); }
778	>	public void testWriteTryLock_Timeout(boolean fair) {
779	>	final PublicReentrantReadWriteLock lock =
780	>	new PublicReentrantReadWriteLock(fair);
781		lock.writeLock().lock();
782		Thread t = newStartedThread(new CheckedRunnable() {
783		public void realRun() throws InterruptedException {
784	<	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
784	>	long startTime = System.nanoTime();
785	>	long timeoutMillis = 10;
786	>	assertFalse(lock.writeLock().tryLock(timeoutMillis, MILLISECONDS));
787	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
788		}});
789
790		awaitTermination(t);
791	<	assertTrue(lock.writeLock().isHeldByCurrentThread());
698	<	lock.writeLock().unlock();
791	>	releaseWriteLock(lock);
792		}
793
794		/**
795		* read timed tryLock times out if write-locked
796		*/
797	<	public void testReadTryLock_Timeout() throws InterruptedException {
798	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
797	>	public void testReadTryLock_Timeout()      { testReadTryLock_Timeout(false); }
798	>	public void testReadTryLock_Timeout_fair() { testReadTryLock_Timeout(true); }
799	>	public void testReadTryLock_Timeout(boolean fair) {
800	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
801		lock.writeLock().lock();
802		Thread t = newStartedThread(new CheckedRunnable() {
803		public void realRun() throws InterruptedException {
804	<	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
804	>	long startTime = System.nanoTime();
805	>	long timeoutMillis = 10;
806	>	assertFalse(lock.readLock().tryLock(timeoutMillis, MILLISECONDS));
807	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
808		}});
809
810		awaitTermination(t);
#	Line 715 | Line 813 | public class ReentrantReadWriteLockTest
813		}
814
815		/**
816	<	* write lockInterruptibly succeeds if lock free else is interruptible
816	>	* write lockInterruptibly succeeds if unlocked, else is interruptible
817		*/
818	<	public void testWriteLockInterruptibly() throws InterruptedException {
819	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
820	<	lock.writeLock().lockInterruptibly();
818	>	public void testWriteLockInterruptibly()      { testWriteLockInterruptibly(false); }
819	>	public void testWriteLockInterruptibly_fair() { testWriteLockInterruptibly(true); }
820	>	public void testWriteLockInterruptibly(boolean fair) {
821	>	final PublicReentrantReadWriteLock lock =
822	>	new PublicReentrantReadWriteLock(fair);
823	>	try {
824	>	lock.writeLock().lockInterruptibly();
825	>	} catch (InterruptedException ie) {
826	>	threadUnexpectedException(ie);
827	>	}
828		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
829		public void realRun() throws InterruptedException {
830		lock.writeLock().lockInterruptibly();
#	Line 727 | Line 832 | public class ReentrantReadWriteLockTest
832
833		waitForQueuedThread(lock, t);
834		t.interrupt();
835	+	assertTrue(lock.writeLock().isHeldByCurrentThread());
836		awaitTermination(t);
837		releaseWriteLock(lock);
838		}
#	Line 734 | Line 840 | public class ReentrantReadWriteLockTest
840		/**
841		* read lockInterruptibly succeeds if lock free else is interruptible
842		*/
843	<	public void testReadLockInterruptibly() throws InterruptedException {
844	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
845	<	lock.writeLock().lockInterruptibly();
843	>	public void testReadLockInterruptibly()      { testReadLockInterruptibly(false); }
844	>	public void testReadLockInterruptibly_fair() { testReadLockInterruptibly(true); }
845	>	public void testReadLockInterruptibly(boolean fair) {
846	>	final PublicReentrantReadWriteLock lock =
847	>	new PublicReentrantReadWriteLock(fair);
848	>	try {
849	>	lock.readLock().lockInterruptibly();
850	>	lock.readLock().unlock();
851	>	lock.writeLock().lockInterruptibly();
852	>	} catch (InterruptedException ie) {
853	>	threadUnexpectedException(ie);
854	>	}
855		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
856		public void realRun() throws InterruptedException {
857		lock.readLock().lockInterruptibly();
#	Line 751 | Line 866 | public class ReentrantReadWriteLockTest
866		/**
867		* Calling await without holding lock throws IllegalMonitorStateException
868		*/
869	<	public void testAwait_IllegalMonitor() throws InterruptedException {
870	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
871	<	final Condition c = lock.writeLock().newCondition();
872	<	try {
873	<	c.await();
874	<	shouldThrow();
875	<	} catch (IllegalMonitorStateException success) {}
876	<	try {
877	<	c.await(LONG_DELAY_MS, MILLISECONDS);
878	<	shouldThrow();
879	<	} catch (IllegalMonitorStateException success) {}
880	<	try {
881	<	c.awaitNanos(100);
882	<	shouldThrow();
768	<	} catch (IllegalMonitorStateException success) {}
769	<	try {
770	<	c.awaitUninterruptibly();
771	<	shouldThrow();
772	<	} catch (IllegalMonitorStateException success) {}
869	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
870	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
871	>	public void testAwait_IMSE(boolean fair) {
872	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
873	>	final Condition c = lock.writeLock().newCondition();
874	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
875	>	long startTime = System.nanoTime();
876	>	try {
877	>	await(c, awaitMethod);
878	>	shouldThrow();
879	>	} catch (IllegalMonitorStateException success) {
880	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
881	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
882	>	}
883		}
884
885		/**
886		* Calling signal without holding lock throws IllegalMonitorStateException
887		*/
888	<	public void testSignal_IllegalMonitor() {
889	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
888	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
889	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
890	>	public void testSignal_IMSE(boolean fair) {
891	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
892		final Condition c = lock.writeLock().newCondition();
893		try {
894		c.signal();
#	Line 787 | Line 899 | public class ReentrantReadWriteLockTest
899		/**
900		* Calling signalAll without holding lock throws IllegalMonitorStateException
901		*/
902	<	public void testSignalAll_IllegalMonitor() {
903	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
902	>	public void testSignalAll_IMSE()      { testSignalAll_IMSE(false); }
903	>	public void testSignalAll_IMSE_fair() { testSignalAll_IMSE(true); }
904	>	public void testSignalAll_IMSE(boolean fair) {
905	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
906		final Condition c = lock.writeLock().newCondition();
907		try {
908		c.signalAll();
#	Line 799 | Line 913 | public class ReentrantReadWriteLockTest
913		/**
914		* awaitNanos without a signal times out
915		*/
916	<	public void testAwaitNanos_Timeout() throws InterruptedException {
917	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
918	<	final Condition c = lock.writeLock().newCondition();
919	<	lock.writeLock().lock();
920	<	long startTime = System.nanoTime();
921	<	long timeoutMillis = 10;
922	<	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
923	<	long nanosRemaining = c.awaitNanos(timeoutNanos);
924	<	assertTrue(nanosRemaining <= 0);
925	<	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
926	<	lock.writeLock().unlock();
916	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
917	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
918	>	public void testAwaitNanos_Timeout(boolean fair) {
919	>	try {
920	>	final ReentrantReadWriteLock lock =
921	>	new ReentrantReadWriteLock(fair);
922	>	final Condition c = lock.writeLock().newCondition();
923	>	lock.writeLock().lock();
924	>	long startTime = System.nanoTime();
925	>	long timeoutMillis = 10;
926	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
927	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
928	>	assertTrue(nanosRemaining <= 0);
929	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
930	>	lock.writeLock().unlock();
931	>	} catch (InterruptedException e) {
932	>	threadUnexpectedException(e);
933	>	}
934		}
935
936		/**
937		* timed await without a signal times out
938		*/
939	<	public void testAwait_Timeout() throws InterruptedException {
940	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
941	<	final Condition c = lock.writeLock().newCondition();
942	<	lock.writeLock().lock();
943	<	long startTime = System.nanoTime();
944	<	long timeoutMillis = 10;
945	<	assertFalse(c.await(timeoutMillis, MILLISECONDS));
946	<	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
947	<	lock.writeLock().unlock();
939	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
940	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
941	>	public void testAwait_Timeout(boolean fair) {
942	>	try {
943	>	final ReentrantReadWriteLock lock =
944	>	new ReentrantReadWriteLock(fair);
945	>	final Condition c = lock.writeLock().newCondition();
946	>	lock.writeLock().lock();
947	>	long startTime = System.nanoTime();
948	>	long timeoutMillis = 10;
949	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
950	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
951	>	lock.writeLock().unlock();
952	>	} catch (InterruptedException e) {
953	>	threadUnexpectedException(e);
954	>	}
955		}
956
957		/**
958		* awaitUntil without a signal times out
959		*/
960	<	public void testAwaitUntil_Timeout() throws InterruptedException {
961	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
962	<	final Condition c = lock.writeLock().newCondition();
963	<	lock.writeLock().lock();
964	<	java.util.Date d = new java.util.Date();
965	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
966	<	lock.writeLock().unlock();
960	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
961	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
962	>	public void testAwaitUntil_Timeout(boolean fair) {
963	>	try {
964	>	final ReentrantReadWriteLock lock =
965	>	new ReentrantReadWriteLock(fair);
966	>	final Condition c = lock.writeLock().newCondition();
967	>	lock.writeLock().lock();
968	>	long startTime = System.nanoTime();
969	>	long timeoutMillis = 10;
970	>	java.util.Date d = new java.util.Date();
971	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
972	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
973	>	lock.writeLock().unlock();
974	>	} catch (InterruptedException e) {
975	>	threadUnexpectedException(e);
976	>	}
977		}
978
979		/**
980		* await returns when signalled
981		*/
982	<	public void testAwait() throws InterruptedException {
983	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
982	>	public void testAwait()      { testAwait(false); }
983	>	public void testAwait_fair() { testAwait(true); }
984	>	public void testAwait(boolean fair) {
985	>	final PublicReentrantReadWriteLock lock =
986	>	new PublicReentrantReadWriteLock(fair);
987		final Condition c = lock.writeLock().newCondition();
988		final CountDownLatch locked = new CountDownLatch(1);
989		Thread t = newStartedThread(new CheckedRunnable() {
#	Line 853 | Line 994 | public class ReentrantReadWriteLockTest
994		lock.writeLock().unlock();
995		}});
996
997	<	locked.await();
997	>	await(locked);
998		lock.writeLock().lock();
999	+	assertHasWaiters(lock, c, t);
1000		c.signal();
1001	+	assertHasNoWaiters(lock, c);
1002		assertTrue(t.isAlive());
1003		lock.writeLock().unlock();
1004		awaitTermination(t);
#	Line 864 | Line 1007 | public class ReentrantReadWriteLockTest
1007		/**
1008		* awaitUninterruptibly doesn't abort on interrupt
1009		*/
1010	<	public void testAwaitUninterruptibly() throws InterruptedException {
1011	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1010	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
1011	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
1012	>	public void testAwaitUninterruptibly(boolean fair) {
1013	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1014		final Condition c = lock.writeLock().newCondition();
1015		final CountDownLatch locked = new CountDownLatch(1);
871	–	final AtomicBoolean canAwake = new AtomicBoolean(false);
1016		Thread t = newStartedThread(new CheckedRunnable() {
1017		public void realRun() {
1018		lock.writeLock().lock();
#	Line 878 | Line 1022 | public class ReentrantReadWriteLockTest
1022		lock.writeLock().unlock();
1023		}});
1024
1025	<	locked.await();
1025	>	await(locked);
1026		lock.writeLock().lock();
1027		lock.writeLock().unlock();
1028		t.interrupt();
1029	<	t.join(10);
1030	<	assertTrue(t.isAlive());
1029	>	long timeoutMillis = 10;
1030	>	assertThreadStaysAlive(t, timeoutMillis);
1031		lock.writeLock().lock();
1032		c.signal();
1033		lock.writeLock().unlock();
#	Line 891 | Line 1035 | public class ReentrantReadWriteLockTest
1035		}
1036
1037		/**
1038	<	* await is interruptible
895	<	*/
896	<	public void testAwait_Interrupt() throws InterruptedException {
897	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
898	<	final Condition c = lock.writeLock().newCondition();
899	<	final CountDownLatch locked = new CountDownLatch(1);
900	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
901	<	public void realRun() throws InterruptedException {
902	<	lock.writeLock().lock();
903	<	assertTrue(lock.isWriteLocked());
904	<	assertTrue(lock.isWriteLockedByCurrentThread());
905	<	assertHasNoWaiters(lock, c);
906	<	locked.countDown();
907	<	try {
908	<	c.await();
909	<	} finally {
910	<	assertTrue(lock.isWriteLocked());
911	<	assertTrue(lock.isWriteLockedByCurrentThread());
912	<	assertHasNoWaiters(lock, c);
913	<	lock.writeLock().unlock();
914	<	assertFalse(Thread.interrupted());
915	<	}
916	<	}});
917	<
918	<	locked.await();
919	<	assertHasWaiters(lock, c, t);
920	<	t.interrupt();
921	<	awaitTermination(t);
922	<	assertFalse(lock.isWriteLocked());
923	<	}
924	<
925	<	/**
926	<	* awaitNanos is interruptible
1038	>	* await/awaitNanos/awaitUntil is interruptible
1039		*/
1040	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
1041	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1040	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
1041	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
1042	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
1043	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
1044	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
1045	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
1046	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
1047	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
1048	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
1049	>	final PublicReentrantReadWriteLock lock =
1050	>	new PublicReentrantReadWriteLock(fair);
1051		final Condition c = lock.writeLock().newCondition();
1052		final CountDownLatch locked = new CountDownLatch(1);
1053		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1054		public void realRun() throws InterruptedException {
1055		lock.writeLock().lock();
1056	<	assertTrue(lock.isWriteLocked());
936	<	assertTrue(lock.isWriteLockedByCurrentThread());
1056	>	assertWriteLockedByMoi(lock);
1057		assertHasNoWaiters(lock, c);
1058		locked.countDown();
1059		try {
1060	<	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
1060	>	await(c, awaitMethod);
1061		} finally {
1062	<	assertTrue(lock.isWriteLocked());
943	<	assertTrue(lock.isWriteLockedByCurrentThread());
1062	>	assertWriteLockedByMoi(lock);
1063		assertHasNoWaiters(lock, c);
1064		lock.writeLock().unlock();
1065		assertFalse(Thread.interrupted());
1066		}
1067		}});
1068
1069	<	locked.await();
1069	>	await(locked);
1070		assertHasWaiters(lock, c, t);
1071		t.interrupt();
1072		awaitTermination(t);
1073	<	assertFalse(lock.isWriteLocked());
955	<	}
956	<
957	<	/**
958	<	* awaitUntil is interruptible
959	<	*/
960	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
961	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
962	<	final Condition c = lock.writeLock().newCondition();
963	<	final CountDownLatch locked = new CountDownLatch(1);
964	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
965	<	public void realRun() throws InterruptedException {
966	<	lock.writeLock().lock();
967	<	assertTrue(lock.isWriteLocked());
968	<	assertTrue(lock.isWriteLockedByCurrentThread());
969	<	assertHasNoWaiters(lock, c);
970	<	locked.countDown();
971	<	java.util.Date d = new java.util.Date();
972	<	try {
973	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
974	<	} finally {
975	<	assertTrue(lock.isWriteLocked());
976	<	assertTrue(lock.isWriteLockedByCurrentThread());
977	<	assertHasNoWaiters(lock, c);
978	<	lock.writeLock().unlock();
979	<	assertFalse(Thread.interrupted());
980	<	}
981	<	}});
982	<
983	<	locked.await();
984	<	assertHasWaiters(lock, c, t);
985	<	t.interrupt();
986	<	awaitTermination(t);
987	<	assertFalse(lock.isWriteLocked());
1073	>	assertNotWriteLocked(lock);
1074		}
1075
1076		/**
1077		* signalAll wakes up all threads
1078		*/
1079	<	public void testSignalAll() throws InterruptedException {
1080	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1079	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
1080	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
1081	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
1082	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
1083	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
1084	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
1085	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
1086	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
1087	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
1088	>	final PublicReentrantReadWriteLock lock =
1089	>	new PublicReentrantReadWriteLock(fair);
1090		final Condition c = lock.writeLock().newCondition();
1091		final CountDownLatch locked = new CountDownLatch(2);
1092		final Lock writeLock = lock.writeLock();
1093	<	Thread t1 = newStartedThread(new CheckedRunnable() {
1093	>	class Awaiter extends CheckedRunnable {
1094		public void realRun() throws InterruptedException {
1095		writeLock.lock();
1096		locked.countDown();
1097	<	c.await();
1097	>	await(c, awaitMethod);
1098		writeLock.unlock();
1099	<	}});
1099	>	}
1100	>	}
1101
1102	<	Thread t2 = newStartedThread(new CheckedRunnable() {
1103	<	public void realRun() throws InterruptedException {
1008	<	writeLock.lock();
1009	<	locked.countDown();
1010	<	c.await();
1011	<	writeLock.unlock();
1012	<	}});
1102	>	Thread t1 = newStartedThread(new Awaiter());
1103	>	Thread t2 = newStartedThread(new Awaiter());
1104
1105	<	locked.await();
1105	>	await(locked);
1106		writeLock.lock();
1107		assertHasWaiters(lock, c, t1, t2);
1108		c.signalAll();
#	Line 1022 | Line 1113 | public class ReentrantReadWriteLockTest
1113		}
1114
1115		/**
1116	<	* signal wakes up waiting threads in FIFO order.
1116	>	* signal wakes up waiting threads in FIFO order
1117		*/
1118	<	public void testSignalWakesFifo() throws InterruptedException {
1119	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1118	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1119	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1120	>	public void testSignalWakesFifo(boolean fair) {
1121	>	final PublicReentrantReadWriteLock lock =
1122	>	new PublicReentrantReadWriteLock(fair);
1123		final Condition c = lock.writeLock().newCondition();
1124		final CountDownLatch locked1 = new CountDownLatch(1);
1125		final CountDownLatch locked2 = new CountDownLatch(1);
#	Line 1038 | Line 1132 | public class ReentrantReadWriteLockTest
1132		writeLock.unlock();
1133		}});
1134
1135	<	locked1.await();
1135	>	await(locked1);
1136
1137		Thread t2 = newStartedThread(new CheckedRunnable() {
1138		public void realRun() throws InterruptedException {
#	Line 1048 | Line 1142 | public class ReentrantReadWriteLockTest
1142		writeLock.unlock();
1143		}});
1144
1145	<	locked2.await();
1145	>	await(locked2);
1146
1147		writeLock.lock();
1148		assertHasWaiters(lock, c, t1, t2);
#	Line 1067 | Line 1161 | public class ReentrantReadWriteLockTest
1161		}
1162
1163		/**
1164	+	* await after multiple reentrant locking preserves lock count
1165	+	*/
1166	+	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1167	+	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1168	+	public void testAwaitLockCount(boolean fair) {
1169	+	final PublicReentrantReadWriteLock lock =
1170	+	new PublicReentrantReadWriteLock(fair);
1171	+	final Condition c = lock.writeLock().newCondition();
1172	+	final CountDownLatch locked = new CountDownLatch(2);
1173	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1174	+	public void realRun() throws InterruptedException {
1175	+	lock.writeLock().lock();
1176	+	assertWriteLockedByMoi(lock);
1177	+	assertEquals(1, lock.writeLock().getHoldCount());
1178	+	locked.countDown();
1179	+	c.await();
1180	+	assertWriteLockedByMoi(lock);
1181	+	assertEquals(1, lock.writeLock().getHoldCount());
1182	+	lock.writeLock().unlock();
1183	+	}});
1184	+
1185	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1186	+	public void realRun() throws InterruptedException {
1187	+	lock.writeLock().lock();
1188	+	lock.writeLock().lock();
1189	+	assertWriteLockedByMoi(lock);
1190	+	assertEquals(2, lock.writeLock().getHoldCount());
1191	+	locked.countDown();
1192	+	c.await();
1193	+	assertWriteLockedByMoi(lock);
1194	+	assertEquals(2, lock.writeLock().getHoldCount());
1195	+	lock.writeLock().unlock();
1196	+	lock.writeLock().unlock();
1197	+	}});
1198	+
1199	+	await(locked);
1200	+	lock.writeLock().lock();
1201	+	assertHasWaiters(lock, c, t1, t2);
1202	+	c.signalAll();
1203	+	assertHasNoWaiters(lock, c);
1204	+	lock.writeLock().unlock();
1205	+	awaitTermination(t1);
1206	+	awaitTermination(t2);
1207	+	}
1208	+
1209	+	/**
1210		* A serialized lock deserializes as unlocked
1211		*/
1212	<	public void testSerialization() throws Exception {
1213	<	ReentrantReadWriteLock l = new ReentrantReadWriteLock();
1214	<	l.readLock().lock();
1215	<	l.readLock().unlock();
1216	<
1217	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1218	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1219	<	out.writeObject(l);
1220	<	out.close();
1221	<
1222	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1223	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1224	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
1225	<	r.readLock().lock();
1226	<	r.readLock().unlock();
1212	>	public void testSerialization()      { testSerialization(false); }
1213	>	public void testSerialization_fair() { testSerialization(true); }
1214	>	public void testSerialization(boolean fair) {
1215	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1216	>	lock.writeLock().lock();
1217	>	lock.readLock().lock();
1218	>
1219	>	ReentrantReadWriteLock clone = serialClone(lock);
1220	>	assertEquals(lock.isFair(), clone.isFair());
1221	>	assertTrue(lock.isWriteLocked());
1222	>	assertFalse(clone.isWriteLocked());
1223	>	assertEquals(1, lock.getReadLockCount());
1224	>	assertEquals(0, clone.getReadLockCount());
1225	>	clone.writeLock().lock();
1226	>	clone.readLock().lock();
1227	>	assertTrue(clone.isWriteLocked());
1228	>	assertEquals(1, clone.getReadLockCount());
1229	>	clone.readLock().unlock();
1230	>	clone.writeLock().unlock();
1231	>	assertFalse(clone.isWriteLocked());
1232	>	assertEquals(1, lock.getReadLockCount());
1233	>	assertEquals(0, clone.getReadLockCount());
1234		}
1235
1236		/**
1237		* hasQueuedThreads reports whether there are waiting threads
1238		*/
1239	<	public void testhasQueuedThreads() throws InterruptedException {
1240	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1239	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
1240	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
1241	>	public void testHasQueuedThreads(boolean fair) {
1242	>	final PublicReentrantReadWriteLock lock =
1243	>	new PublicReentrantReadWriteLock(fair);
1244		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1245		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1246		assertFalse(lock.hasQueuedThreads());
1247		lock.writeLock().lock();
1248		assertFalse(lock.hasQueuedThreads());
1099	–	long startTime = System.nanoTime();
1249		t1.start();
1250		waitForQueuedThread(lock, t1);
1251	+	assertTrue(lock.hasQueuedThreads());
1252		t2.start();
1253		waitForQueuedThread(lock, t2);
1254		assertTrue(lock.hasQueuedThreads());
#	Line 1113 | Line 1263 | public class ReentrantReadWriteLockTest
1263		/**
1264		* hasQueuedThread(null) throws NPE
1265		*/
1266	<	public void testHasQueuedThreadNPE() {
1267	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1266	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
1267	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
1268	>	public void testHasQueuedThreadNPE(boolean fair) {
1269	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1270		try {
1271	<	sync.hasQueuedThread(null);
1271	>	lock.hasQueuedThread(null);
1272		shouldThrow();
1273		} catch (NullPointerException success) {}
1274		}
1275
1276		/**
1277	<	* hasQueuedThread reports whether a thread is queued.
1277	>	* hasQueuedThread reports whether a thread is queued
1278		*/
1279	<	public void testHasQueuedThread() throws InterruptedException {
1280	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1279	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
1280	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
1281	>	public void testHasQueuedThread(boolean fair) {
1282	>	final PublicReentrantReadWriteLock lock =
1283	>	new PublicReentrantReadWriteLock(fair);
1284		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1285		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1286		assertFalse(lock.hasQueuedThread(t1));
1287		assertFalse(lock.hasQueuedThread(t2));
1288		lock.writeLock().lock();
1134	–	long startTime = System.nanoTime();
1289		t1.start();
1290		waitForQueuedThread(lock, t1);
1291		assertTrue(lock.hasQueuedThread(t1));
#	Line 1153 | Line 1307 | public class ReentrantReadWriteLockTest
1307		/**
1308		* getQueueLength reports number of waiting threads
1309		*/
1310	<	public void testGetQueueLength() throws InterruptedException {
1311	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1310	>	public void testGetQueueLength()      { testGetQueueLength(false); }
1311	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
1312	>	public void testGetQueueLength(boolean fair) {
1313	>	final PublicReentrantReadWriteLock lock =
1314	>	new PublicReentrantReadWriteLock(fair);
1315		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1316		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1317		assertEquals(0, lock.getQueueLength());
1318		lock.writeLock().lock();
1162	–	long startTime = System.nanoTime();
1319		t1.start();
1320		waitForQueuedThread(lock, t1);
1321		assertEquals(1, lock.getQueueLength());
#	Line 1177 | Line 1333 | public class ReentrantReadWriteLockTest
1333		/**
1334		* getQueuedThreads includes waiting threads
1335		*/
1336	<	public void testGetQueuedThreads() throws InterruptedException {
1337	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1336	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
1337	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
1338	>	public void testGetQueuedThreads(boolean fair) {
1339	>	final PublicReentrantReadWriteLock lock =
1340	>	new PublicReentrantReadWriteLock(fair);
1341		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1342		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1343		assertTrue(lock.getQueuedThreads().isEmpty());
1344		lock.writeLock().lock();
1186	–	long startTime = System.nanoTime();
1345		assertTrue(lock.getQueuedThreads().isEmpty());
1346		t1.start();
1347		waitForQueuedThread(lock, t1);
#	Line 1207 | Line 1365 | public class ReentrantReadWriteLockTest
1365		/**
1366		* hasWaiters throws NPE if null
1367		*/
1368	<	public void testHasWaitersNPE() {
1369	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1368	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
1369	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
1370	>	public void testHasWaitersNPE(boolean fair) {
1371	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1372		try {
1373		lock.hasWaiters(null);
1374		shouldThrow();
#	Line 1218 | Line 1378 | public class ReentrantReadWriteLockTest
1378		/**
1379		* getWaitQueueLength throws NPE if null
1380		*/
1381	<	public void testGetWaitQueueLengthNPE() {
1382	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1381	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
1382	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
1383	>	public void testGetWaitQueueLengthNPE(boolean fair) {
1384	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1385		try {
1386		lock.getWaitQueueLength(null);
1387		shouldThrow();
#	Line 1229 | Line 1391 | public class ReentrantReadWriteLockTest
1391		/**
1392		* getWaitingThreads throws NPE if null
1393		*/
1394	<	public void testGetWaitingThreadsNPE() {
1395	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1394	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
1395	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
1396	>	public void testGetWaitingThreadsNPE(boolean fair) {
1397	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(fair);
1398		try {
1399		lock.getWaitingThreads(null);
1400		shouldThrow();
#	Line 1238 | Line 1402 | public class ReentrantReadWriteLockTest
1402		}
1403
1404		/**
1405	<	* hasWaiters throws IAE if not owned
1405	>	* hasWaiters throws IllegalArgumentException if not owned
1406		*/
1407	<	public void testHasWaitersIAE() {
1408	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1407	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
1408	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
1409	>	public void testHasWaitersIAE(boolean fair) {
1410	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1411		final Condition c = lock.writeLock().newCondition();
1412	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1412	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1413		try {
1414		lock2.hasWaiters(c);
1415		shouldThrow();
#	Line 1251 | Line 1417 | public class ReentrantReadWriteLockTest
1417		}
1418
1419		/**
1420	<	* hasWaiters throws IMSE if not locked
1420	>	* hasWaiters throws IllegalMonitorStateException if not locked
1421		*/
1422	<	public void testHasWaitersIMSE() {
1423	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1422	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
1423	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
1424	>	public void testHasWaitersIMSE(boolean fair) {
1425	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1426		final Condition c = lock.writeLock().newCondition();
1427		try {
1428		lock.hasWaiters(c);
#	Line 1263 | Line 1431 | public class ReentrantReadWriteLockTest
1431		}
1432
1433		/**
1434	<	* getWaitQueueLength throws IAE if not owned
1434	>	* getWaitQueueLength throws IllegalArgumentException if not owned
1435		*/
1436	<	public void testGetWaitQueueLengthIAE() {
1437	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1436	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
1437	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
1438	>	public void testGetWaitQueueLengthIAE(boolean fair) {
1439	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1440		final Condition c = lock.writeLock().newCondition();
1441	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1441	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1442		try {
1443		lock2.getWaitQueueLength(c);
1444		shouldThrow();
#	Line 1276 | Line 1446 | public class ReentrantReadWriteLockTest
1446		}
1447
1448		/**
1449	<	* getWaitQueueLength throws IMSE if not locked
1449	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
1450		*/
1451	<	public void testGetWaitQueueLengthIMSE() {
1452	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1451	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
1452	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
1453	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
1454	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1455		final Condition c = lock.writeLock().newCondition();
1456		try {
1457		lock.getWaitQueueLength(c);
#	Line 1288 | Line 1460 | public class ReentrantReadWriteLockTest
1460		}
1461
1462		/**
1463	<	* getWaitingThreads throws IAE if not owned
1463	>	* getWaitingThreads throws IllegalArgumentException if not owned
1464		*/
1465	<	public void testGetWaitingThreadsIAE() {
1466	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1465	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
1466	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
1467	>	public void testGetWaitingThreadsIAE(boolean fair) {
1468	>	final PublicReentrantReadWriteLock lock =
1469	>	new PublicReentrantReadWriteLock(fair);
1470		final Condition c = lock.writeLock().newCondition();
1471	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1471	>	final PublicReentrantReadWriteLock lock2 =
1472	>	new PublicReentrantReadWriteLock(fair);
1473		try {
1474		lock2.getWaitingThreads(c);
1475		shouldThrow();
#	Line 1301 | Line 1477 | public class ReentrantReadWriteLockTest
1477		}
1478
1479		/**
1480	<	* getWaitingThreads throws IMSE if not locked
1480	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
1481		*/
1482	<	public void testGetWaitingThreadsIMSE() {
1483	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1482	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
1483	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
1484	>	public void testGetWaitingThreadsIMSE(boolean fair) {
1485	>	final PublicReentrantReadWriteLock lock =
1486	>	new PublicReentrantReadWriteLock(fair);
1487		final Condition c = lock.writeLock().newCondition();
1488		try {
1489		lock.getWaitingThreads(c);
#	Line 1315 | Line 1494 | public class ReentrantReadWriteLockTest
1494		/**
1495		* hasWaiters returns true when a thread is waiting, else false
1496		*/
1497	<	public void testHasWaiters() throws InterruptedException {
1498	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1497	>	public void testHasWaiters()      { testHasWaiters(false); }
1498	>	public void testHasWaiters_fair() { testHasWaiters(true); }
1499	>	public void testHasWaiters(boolean fair) {
1500	>	final PublicReentrantReadWriteLock lock =
1501	>	new PublicReentrantReadWriteLock(fair);
1502		final Condition c = lock.writeLock().newCondition();
1503		final CountDownLatch locked = new CountDownLatch(1);
1504		Thread t = newStartedThread(new CheckedRunnable() {
1505		public void realRun() throws InterruptedException {
1506		lock.writeLock().lock();
1507	+	assertHasNoWaiters(lock, c);
1508		assertFalse(lock.hasWaiters(c));
1509		locked.countDown();
1327	–	assertEquals(0, lock.getWaitQueueLength(c));
1510		c.await();
1511	+	assertHasNoWaiters(lock, c);
1512	+	assertFalse(lock.hasWaiters(c));
1513		lock.writeLock().unlock();
1514		}});
1515
1516	<	locked.await();
1516	>	await(locked);
1517		lock.writeLock().lock();
1518	+	assertHasWaiters(lock, c, t);
1519		assertTrue(lock.hasWaiters(c));
1335	–	assertEquals(1, lock.getWaitQueueLength(c));
1520		c.signal();
1521		assertHasNoWaiters(lock, c);
1522	+	assertFalse(lock.hasWaiters(c));
1523		lock.writeLock().unlock();
1524		awaitTermination(t);
1525		assertHasNoWaiters(lock, c);
#	Line 1343 | Line 1528 | public class ReentrantReadWriteLockTest
1528		/**
1529		* getWaitQueueLength returns number of waiting threads
1530		*/
1531	<	public void testGetWaitQueueLength() throws InterruptedException {
1532	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1531	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
1532	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
1533	>	public void testGetWaitQueueLength(boolean fair) {
1534	>	final PublicReentrantReadWriteLock lock =
1535	>	new PublicReentrantReadWriteLock(fair);
1536		final Condition c = lock.writeLock().newCondition();
1537		final CountDownLatch locked = new CountDownLatch(1);
1538		Thread t = newStartedThread(new CheckedRunnable() {
#	Line 1356 | Line 1544 | public class ReentrantReadWriteLockTest
1544		lock.writeLock().unlock();
1545		}});
1546
1547	<	locked.await();
1547	>	await(locked);
1548		lock.writeLock().lock();
1549		assertHasWaiters(lock, c, t);
1550		assertEquals(1, lock.getWaitQueueLength(c));
#	Line 1370 | Line 1558 | public class ReentrantReadWriteLockTest
1558		/**
1559		* getWaitingThreads returns only and all waiting threads
1560		*/
1561	<	public void testGetWaitingThreads() throws InterruptedException {
1562	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1561	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
1562	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
1563	>	public void testGetWaitingThreads(boolean fair) {
1564	>	final PublicReentrantReadWriteLock lock =
1565	>	new PublicReentrantReadWriteLock(fair);
1566		final Condition c = lock.writeLock().newCondition();
1567		final CountDownLatch locked1 = new CountDownLatch(1);
1568		final CountDownLatch locked2 = new CountDownLatch(1);
#	Line 1398 | Line 1589 | public class ReentrantReadWriteLockTest
1589		lock.writeLock().unlock();
1590
1591		t1.start();
1592	<	locked1.await();
1592	>	await(locked1);
1593		t2.start();
1594	<	locked2.await();
1594	>	await(locked2);
1595
1596		lock.writeLock().lock();
1597		assertTrue(lock.hasWaiters(c));
#	Line 1420 | Line 1611 | public class ReentrantReadWriteLockTest
1611		/**
1612		* toString indicates current lock state
1613		*/
1614	<	public void testToString() {
1615	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1616	<	String us = lock.toString();
1617	<	assertTrue(us.indexOf("Write locks = 0") >= 0);
1618	<	assertTrue(us.indexOf("Read locks = 0") >= 0);
1619	<	lock.writeLock().lock();
1620	<	String ws = lock.toString();
1621	<	assertTrue(ws.indexOf("Write locks = 1") >= 0);
1622	<	assertTrue(ws.indexOf("Read locks = 0") >= 0);
1614	>	public void testToString()      { testToString(false); }
1615	>	public void testToString_fair() { testToString(true); }
1616	>	public void testToString(boolean fair) {
1617	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1618	>	assertTrue(lock.toString().contains("Write locks = 0"));
1619	>	assertTrue(lock.toString().contains("Read locks = 0"));
1620	>	lock.writeLock().lock();
1621	>	assertTrue(lock.toString().contains("Write locks = 1"));
1622	>	assertTrue(lock.toString().contains("Read locks = 0"));
1623		lock.writeLock().unlock();
1624		lock.readLock().lock();
1625		lock.readLock().lock();
1626	<	String rs = lock.toString();
1627	<	assertTrue(rs.indexOf("Write locks = 0") >= 0);
1437	<	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1626	>	assertTrue(lock.toString().contains("Write locks = 0"));
1627	>	assertTrue(lock.toString().contains("Read locks = 2"));
1628		}
1629
1630		/**
1631		* readLock.toString indicates current lock state
1632		*/
1633	<	public void testReadLockToString() {
1634	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1635	<	String us = lock.readLock().toString();
1636	<	assertTrue(us.indexOf("Read locks = 0") >= 0);
1633	>	public void testReadLockToString()      { testReadLockToString(false); }
1634	>	public void testReadLockToString_fair() { testReadLockToString(true); }
1635	>	public void testReadLockToString(boolean fair) {
1636	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1637	>	assertTrue(lock.readLock().toString().contains("Read locks = 0"));
1638		lock.readLock().lock();
1639		lock.readLock().lock();
1640	<	String rs = lock.readLock().toString();
1450	<	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1640	>	assertTrue(lock.readLock().toString().contains("Read locks = 2"));
1641		}
1642
1643		/**
1644		* writeLock.toString indicates current lock state
1645		*/
1646	<	public void testWriteLockToString() {
1647	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1648	<	String us = lock.writeLock().toString();
1649	<	assertTrue(us.indexOf("Unlocked") >= 0);
1646	>	public void testWriteLockToString()      { testWriteLockToString(false); }
1647	>	public void testWriteLockToString_fair() { testWriteLockToString(true); }
1648	>	public void testWriteLockToString(boolean fair) {
1649	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1650	>	assertTrue(lock.writeLock().toString().contains("Unlocked"));
1651		lock.writeLock().lock();
1652	<	String ls = lock.writeLock().toString();
1653	<	assertTrue(ls.indexOf("Locked") >= 0);
1652	>	assertTrue(lock.writeLock().toString().contains("Locked"));
1653	>	lock.writeLock().unlock();
1654	>	assertTrue(lock.writeLock().toString().contains("Unlocked"));
1655		}
1656
1657		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines