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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.58 by jsr166, Sat May 7 14:43:13 2011 UTC vs.
Revision 1.74 by jsr166, Sun May 24 01:42:14 2015 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–	import junit.framework.*;
10	–	import java.util.concurrent.atomic.AtomicBoolean;
11	–	import java.util.concurrent.locks.*;
12	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.io.*;
11	<	import java.util.*;
10	>
11	>	import java.util.Arrays;
12	>	import java.util.Collection;
13	>	import java.util.HashSet;
14	>	import java.util.concurrent.CountDownLatch;
15	>	import java.util.concurrent.atomic.AtomicBoolean;
16	>	import java.util.concurrent.locks.Condition;
17	>	import java.util.concurrent.locks.Lock;
18	>	import java.util.concurrent.locks.ReentrantReadWriteLock;
19	>
20	>	import junit.framework.AssertionFailedError;
21	>	import junit.framework.Test;
22	>	import junit.framework.TestSuite;
23
24		public class ReentrantReadWriteLockTest extends JSR166TestCase {
25		public static void main(String[] args) {
26	<	junit.textui.TestRunner.run(suite());
26	>	main(suite(), args);
27		}
28		public static Test suite() {
29		return new TestSuite(ReentrantReadWriteLockTest.class);
#	Line 67 | Line 74 | public class ReentrantReadWriteLockTest
74		*/
75		void releaseWriteLock(PublicReentrantReadWriteLock lock) {
76		ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock();
77	<	assertWriteLockedBy(lock, Thread.currentThread());
77	>	assertWriteLockedByMoi(lock);
78		assertEquals(1, lock.getWriteHoldCount());
79		writeLock.unlock();
80		assertNotWriteLocked(lock);
#	Line 80 | Line 87 | public class ReentrantReadWriteLockTest
87		long startTime = System.nanoTime();
88		while (!lock.hasQueuedThread(t)) {
89		if (millisElapsedSince(startTime) > LONG_DELAY_MS)
90	<	throw new AssertionError("timed out");
90	>	throw new AssertionFailedError("timed out");
91		Thread.yield();
92		}
93		assertTrue(t.isAlive());
94	<	assertTrue(lock.getOwner() != t);
94	>	assertNotSame(t, lock.getOwner());
95		}
96
97		/**
#	Line 94 | Line 101 | public class ReentrantReadWriteLockTest
101		assertFalse(lock.isWriteLocked());
102		assertFalse(lock.isWriteLockedByCurrentThread());
103		assertFalse(lock.writeLock().isHeldByCurrentThread());
97	–	assertNull(lock.getOwner());
104		assertEquals(0, lock.getWriteHoldCount());
105	+	assertEquals(0, lock.writeLock().getHoldCount());
106	+	assertNull(lock.getOwner());
107		}
108
109		/**
#	Line 110 | Line 118 | public class ReentrantReadWriteLockTest
118		lock.writeLock().isHeldByCurrentThread());
119		assertEquals(t == Thread.currentThread(),
120		lock.getWriteHoldCount() > 0);
121	+	assertEquals(t == Thread.currentThread(),
122	+	lock.writeLock().getHoldCount() > 0);
123		assertEquals(0, lock.getReadLockCount());
124		}
125
126		/**
127	+	* Checks that lock is write-locked by the current thread.
128	+	*/
129	+	void assertWriteLockedByMoi(PublicReentrantReadWriteLock lock) {
130	+	assertWriteLockedBy(lock, Thread.currentThread());
131	+	}
132	+
133	+	/**
134		* Checks that condition c has no waiters.
135		*/
136		void assertHasNoWaiters(PublicReentrantReadWriteLock lock, Condition c) {
#	Line 135 | Line 152 | public class ReentrantReadWriteLockTest
152		lock.writeLock().unlock();
153		}
154
155	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
156	+
157	+	/**
158	+	* Awaits condition using the specified AwaitMethod.
159	+	*/
160	+	void await(Condition c, AwaitMethod awaitMethod)
161	+	throws InterruptedException {
162	+	switch (awaitMethod) {
163	+	case await:
164	+	c.await();
165	+	break;
166	+	case awaitTimed:
167	+	assertTrue(c.await(2 * LONG_DELAY_MS, MILLISECONDS));
168	+	break;
169	+	case awaitNanos:
170	+	long nanosRemaining = c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
171	+	assertTrue(nanosRemaining > 0);
172	+	break;
173	+	case awaitUntil:
174	+	java.util.Date d = new java.util.Date();
175	+	assertTrue(c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS)));
176	+	break;
177	+	default:
178	+	throw new AssertionError();
179	+	}
180	+	}
181	+
182		/**
183		* Constructor sets given fairness, and is in unlocked state
184		*/
#	Line 160 | Line 204 | public class ReentrantReadWriteLockTest
204		/**
205		* write-locking and read-locking an unlocked lock succeed
206		*/
207	<	public void testLock() {
208	<	PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
207	>	public void testLock()      { testLock(false); }
208	>	public void testLock_fair() { testLock(true); }
209	>	public void testLock(boolean fair) {
210	>	PublicReentrantReadWriteLock lock =
211	>	new PublicReentrantReadWriteLock(fair);
212		assertNotWriteLocked(lock);
213		lock.writeLock().lock();
214	<	assertWriteLockedBy(lock, Thread.currentThread());
168	<	lock.writeLock().unlock();
169	<	assertNotWriteLocked(lock);
170	<	assertEquals(0, lock.getReadLockCount());
171	<	lock.readLock().lock();
172	<	assertNotWriteLocked(lock);
173	<	assertEquals(1, lock.getReadLockCount());
174	<	lock.readLock().unlock();
175	<	assertNotWriteLocked(lock);
176	<	assertEquals(0, lock.getReadLockCount());
177	<	}
178	<
179	<	/**
180	<	* locking an unlocked fair lock succeeds
181	<	*/
182	<	public void testFairLock() {
183	<	PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
184	<	assertNotWriteLocked(lock);
185	<	lock.writeLock().lock();
186	<	assertWriteLockedBy(lock, Thread.currentThread());
214	>	assertWriteLockedByMoi(lock);
215		lock.writeLock().unlock();
216		assertNotWriteLocked(lock);
217		assertEquals(0, lock.getReadLockCount());
#	Line 198 | Line 226 | public class ReentrantReadWriteLockTest
226		/**
227		* getWriteHoldCount returns number of recursive holds
228		*/
229	<	public void testGetWriteHoldCount() {
230	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
229	>	public void testGetWriteHoldCount()      { testGetWriteHoldCount(false); }
230	>	public void testGetWriteHoldCount_fair() { testGetWriteHoldCount(true); }
231	>	public void testGetWriteHoldCount(boolean fair) {
232	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
233		for (int i = 1; i <= SIZE; i++) {
234		lock.writeLock().lock();
235		assertEquals(i,lock.getWriteHoldCount());
236		}
237		for (int i = SIZE; i > 0; i--) {
238		lock.writeLock().unlock();
239	<	assertEquals(i-1,lock.getWriteHoldCount());
239	>	assertEquals(i - 1,lock.getWriteHoldCount());
240		}
241		}
242
243		/**
244	<	* WriteLock.getHoldCount returns number of recursive holds
244	>	* writelock.getHoldCount returns number of recursive holds
245		*/
246	<	public void testGetHoldCount() {
247	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
246	>	public void testGetHoldCount()      { testGetHoldCount(false); }
247	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
248	>	public void testGetHoldCount(boolean fair) {
249	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
250		for (int i = 1; i <= SIZE; i++) {
251		lock.writeLock().lock();
252		assertEquals(i,lock.writeLock().getHoldCount());
253		}
254		for (int i = SIZE; i > 0; i--) {
255		lock.writeLock().unlock();
256	<	assertEquals(i-1,lock.writeLock().getHoldCount());
256	>	assertEquals(i - 1,lock.writeLock().getHoldCount());
257		}
258		}
259
260		/**
261		* getReadHoldCount returns number of recursive holds
262		*/
263	<	public void testGetReadHoldCount() {
264	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
263	>	public void testGetReadHoldCount()      { testGetReadHoldCount(false); }
264	>	public void testGetReadHoldCount_fair() { testGetReadHoldCount(true); }
265	>	public void testGetReadHoldCount(boolean fair) {
266	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
267		for (int i = 1; i <= SIZE; i++) {
268		lock.readLock().lock();
269		assertEquals(i,lock.getReadHoldCount());
270		}
271		for (int i = SIZE; i > 0; i--) {
272		lock.readLock().unlock();
273	<	assertEquals(i-1,lock.getReadHoldCount());
273	>	assertEquals(i - 1,lock.getReadHoldCount());
274		}
275		}
276
277		/**
278		* write-unlocking an unlocked lock throws IllegalMonitorStateException
279		*/
280	<	public void testWriteUnlock_IllegalMonitorStateException() {
281	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
280	>	public void testWriteUnlock_IMSE()      { testWriteUnlock_IMSE(false); }
281	>	public void testWriteUnlock_IMSE_fair() { testWriteUnlock_IMSE(true); }
282	>	public void testWriteUnlock_IMSE(boolean fair) {
283	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
284		try {
285		lock.writeLock().unlock();
286		shouldThrow();
#	Line 254 | Line 290 | public class ReentrantReadWriteLockTest
290		/**
291		* read-unlocking an unlocked lock throws IllegalMonitorStateException
292		*/
293	<	public void testReadUnlock_IllegalMonitorStateException() {
294	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
293	>	public void testReadUnlock_IMSE()      { testReadUnlock_IMSE(false); }
294	>	public void testReadUnlock_IMSE_fair() { testReadUnlock_IMSE(true); }
295	>	public void testReadUnlock_IMSE(boolean fair) {
296	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
297		try {
298		lock.readLock().unlock();
299		shouldThrow();
#	Line 265 | Line 303 | public class ReentrantReadWriteLockTest
303		/**
304		* write-lockInterruptibly is interruptible
305		*/
306	<	public void testWriteLockInterruptibly_Interrupted() throws Exception {
307	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
306	>	public void testWriteLockInterruptibly_Interruptible()      { testWriteLockInterruptibly_Interruptible(false); }
307	>	public void testWriteLockInterruptibly_Interruptible_fair() { testWriteLockInterruptibly_Interruptible(true); }
308	>	public void testWriteLockInterruptibly_Interruptible(boolean fair) {
309	>	final PublicReentrantReadWriteLock lock =
310	>	new PublicReentrantReadWriteLock(fair);
311		lock.writeLock().lock();
312		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
313		public void realRun() throws InterruptedException {
#	Line 282 | Line 323 | public class ReentrantReadWriteLockTest
323		/**
324		* timed write-tryLock is interruptible
325		*/
326	<	public void testWriteTryLock_Interrupted() throws InterruptedException {
327	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
326	>	public void testWriteTryLock_Interruptible()      { testWriteTryLock_Interruptible(false); }
327	>	public void testWriteTryLock_Interruptible_fair() { testWriteTryLock_Interruptible(true); }
328	>	public void testWriteTryLock_Interruptible(boolean fair) {
329	>	final PublicReentrantReadWriteLock lock =
330	>	new PublicReentrantReadWriteLock(fair);
331		lock.writeLock().lock();
332		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
333		public void realRun() throws InterruptedException {
334	<	lock.writeLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
334	>	lock.writeLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
335		}});
336
337		waitForQueuedThread(lock, t);
#	Line 299 | Line 343 | public class ReentrantReadWriteLockTest
343		/**
344		* read-lockInterruptibly is interruptible
345		*/
346	<	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
347	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
346	>	public void testReadLockInterruptibly_Interruptible()      { testReadLockInterruptibly_Interruptible(false); }
347	>	public void testReadLockInterruptibly_Interruptible_fair() { testReadLockInterruptibly_Interruptible(true); }
348	>	public void testReadLockInterruptibly_Interruptible(boolean fair) {
349	>	final PublicReentrantReadWriteLock lock =
350	>	new PublicReentrantReadWriteLock(fair);
351		lock.writeLock().lock();
352		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
353		public void realRun() throws InterruptedException {
#	Line 316 | Line 363 | public class ReentrantReadWriteLockTest
363		/**
364		* timed read-tryLock is interruptible
365		*/
366	<	public void testReadTryLock_Interrupted() throws InterruptedException {
367	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
366	>	public void testReadTryLock_Interruptible()      { testReadTryLock_Interruptible(false); }
367	>	public void testReadTryLock_Interruptible_fair() { testReadTryLock_Interruptible(true); }
368	>	public void testReadTryLock_Interruptible(boolean fair) {
369	>	final PublicReentrantReadWriteLock lock =
370	>	new PublicReentrantReadWriteLock(fair);
371		lock.writeLock().lock();
372		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
373		public void realRun() throws InterruptedException {
374	<	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
374	>	lock.readLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
375		}});
376
377		waitForQueuedThread(lock, t);
#	Line 331 | Line 381 | public class ReentrantReadWriteLockTest
381		}
382
383		/**
384	+	* write-tryLock on an unlocked lock succeeds
385	+	*/
386	+	public void testWriteTryLock()      { testWriteTryLock(false); }
387	+	public void testWriteTryLock_fair() { testWriteTryLock(true); }
388	+	public void testWriteTryLock(boolean fair) {
389	+	final PublicReentrantReadWriteLock lock =
390	+	new PublicReentrantReadWriteLock(fair);
391	+	assertTrue(lock.writeLock().tryLock());
392	+	assertWriteLockedByMoi(lock);
393	+	assertTrue(lock.writeLock().tryLock());
394	+	assertWriteLockedByMoi(lock);
395	+	lock.writeLock().unlock();
396	+	releaseWriteLock(lock);
397	+	}
398	+
399	+	/**
400		* write-tryLock fails if locked
401		*/
402	<	public void testWriteTryLockWhenLocked() throws InterruptedException {
403	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
402	>	public void testWriteTryLockWhenLocked()      { testWriteTryLockWhenLocked(false); }
403	>	public void testWriteTryLockWhenLocked_fair() { testWriteTryLockWhenLocked(true); }
404	>	public void testWriteTryLockWhenLocked(boolean fair) {
405	>	final PublicReentrantReadWriteLock lock =
406	>	new PublicReentrantReadWriteLock(fair);
407		lock.writeLock().lock();
408		Thread t = newStartedThread(new CheckedRunnable() {
409		public void realRun() {
#	Line 348 | Line 417 | public class ReentrantReadWriteLockTest
417		/**
418		* read-tryLock fails if locked
419		*/
420	<	public void testReadTryLockWhenLocked() throws InterruptedException {
421	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
420	>	public void testReadTryLockWhenLocked()      { testReadTryLockWhenLocked(false); }
421	>	public void testReadTryLockWhenLocked_fair() { testReadTryLockWhenLocked(true); }
422	>	public void testReadTryLockWhenLocked(boolean fair) {
423	>	final PublicReentrantReadWriteLock lock =
424	>	new PublicReentrantReadWriteLock(fair);
425		lock.writeLock().lock();
426		Thread t = newStartedThread(new CheckedRunnable() {
427		public void realRun() {
#	Line 363 | Line 435 | public class ReentrantReadWriteLockTest
435		/**
436		* Multiple threads can hold a read lock when not write-locked
437		*/
438	<	public void testMultipleReadLocks() throws InterruptedException {
439	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
438	>	public void testMultipleReadLocks()      { testMultipleReadLocks(false); }
439	>	public void testMultipleReadLocks_fair() { testMultipleReadLocks(true); }
440	>	public void testMultipleReadLocks(boolean fair) {
441	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
442		lock.readLock().lock();
443		Thread t = newStartedThread(new CheckedRunnable() {
444	<	public void realRun() {
444	>	public void realRun() throws InterruptedException {
445		assertTrue(lock.readLock().tryLock());
446		lock.readLock().unlock();
447	+	assertTrue(lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS));
448	+	lock.readLock().unlock();
449	+	lock.readLock().lock();
450	+	lock.readLock().unlock();
451		}});
452
453		awaitTermination(t);
#	Line 379 | Line 457 | public class ReentrantReadWriteLockTest
457		/**
458		* A writelock succeeds only after a reading thread unlocks
459		*/
460	<	public void testWriteAfterReadLock() throws InterruptedException {
461	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
460	>	public void testWriteAfterReadLock()      { testWriteAfterReadLock(false); }
461	>	public void testWriteAfterReadLock_fair() { testWriteAfterReadLock(true); }
462	>	public void testWriteAfterReadLock(boolean fair) {
463	>	final PublicReentrantReadWriteLock lock =
464	>	new PublicReentrantReadWriteLock(fair);
465		lock.readLock().lock();
385	–
466		Thread t = newStartedThread(new CheckedRunnable() {
467		public void realRun() {
468		assertEquals(1, lock.getReadLockCount());
#	Line 402 | Line 482 | public class ReentrantReadWriteLockTest
482		/**
483		* A writelock succeeds only after reading threads unlock
484		*/
485	<	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
486	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
485	>	public void testWriteAfterMultipleReadLocks()      { testWriteAfterMultipleReadLocks(false); }
486	>	public void testWriteAfterMultipleReadLocks_fair() { testWriteAfterMultipleReadLocks(true); }
487	>	public void testWriteAfterMultipleReadLocks(boolean fair) {
488	>	final PublicReentrantReadWriteLock lock =
489	>	new PublicReentrantReadWriteLock(fair);
490		lock.readLock().lock();
491		lock.readLock().lock();
492		Thread t1 = newStartedThread(new CheckedRunnable() {
#	Line 433 | Line 516 | public class ReentrantReadWriteLockTest
516
517		/**
518		* A thread that tries to acquire a fair read lock (non-reentrantly)
519	<	* will block if there is a waiting writer thread.
519	>	* will block if there is a waiting writer thread
520		*/
521	<	public void testReaderWriterReaderFairFifo() throws InterruptedException {
522	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
521	>	public void testReaderWriterReaderFairFifo() {
522	>	final PublicReentrantReadWriteLock lock =
523	>	new PublicReentrantReadWriteLock(true);
524		final AtomicBoolean t1GotLock = new AtomicBoolean(false);
525
526		lock.readLock().lock();
#	Line 471 | Line 555 | public class ReentrantReadWriteLockTest
555		/**
556		* Readlocks succeed only after a writing thread unlocks
557		*/
558	<	public void testReadAfterWriteLock() throws InterruptedException {
559	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
558	>	public void testReadAfterWriteLock()      { testReadAfterWriteLock(false); }
559	>	public void testReadAfterWriteLock_fair() { testReadAfterWriteLock(true); }
560	>	public void testReadAfterWriteLock(boolean fair) {
561	>	final PublicReentrantReadWriteLock lock =
562	>	new PublicReentrantReadWriteLock(fair);
563		lock.writeLock().lock();
564		Thread t1 = newStartedThread(new CheckedRunnable() {
565		public void realRun() {
#	Line 495 | Line 582 | public class ReentrantReadWriteLockTest
582		/**
583		* Read trylock succeeds if write locked by current thread
584		*/
585	<	public void testReadHoldingWriteLock() {
586	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
585	>	public void testReadHoldingWriteLock()      { testReadHoldingWriteLock(false); }
586	>	public void testReadHoldingWriteLock_fair() { testReadHoldingWriteLock(true); }
587	>	public void testReadHoldingWriteLock(boolean fair) {
588	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
589		lock.writeLock().lock();
590		assertTrue(lock.readLock().tryLock());
591		lock.readLock().unlock();
#	Line 504 | Line 593 | public class ReentrantReadWriteLockTest
593		}
594
595		/**
596	<	* Read lock succeeds if write locked by current thread even if
597	<	* other threads are waiting for readlock
596	>	* Read trylock succeeds (barging) even in the presence of waiting
597	>	* readers and/or writers
598		*/
599	<	public void testReadHoldingWriteLock2() throws InterruptedException {
600	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
601	<	lock.writeLock().lock();
599	>	public void testReadTryLockBarging()      { testReadTryLockBarging(false); }
600	>	public void testReadTryLockBarging_fair() { testReadTryLockBarging(true); }
601	>	public void testReadTryLockBarging(boolean fair) {
602	>	final PublicReentrantReadWriteLock lock =
603	>	new PublicReentrantReadWriteLock(fair);
604		lock.readLock().lock();
514	–	lock.readLock().unlock();
605
606		Thread t1 = newStartedThread(new CheckedRunnable() {
607		public void realRun() {
608	<	lock.readLock().lock();
609	<	lock.readLock().unlock();
520	<	}});
521	<	Thread t2 = newStartedThread(new CheckedRunnable() {
522	<	public void realRun() {
523	<	lock.readLock().lock();
524	<	lock.readLock().unlock();
608	>	lock.writeLock().lock();
609	>	lock.writeLock().unlock();
610		}});
611
612		waitForQueuedThread(lock, t1);
528	–	waitForQueuedThread(lock, t2);
529	–	assertWriteLockedBy(lock, Thread.currentThread());
530	–	lock.readLock().lock();
531	–	lock.readLock().unlock();
532	–	releaseWriteLock(lock);
533	–	awaitTermination(t1);
534	–	awaitTermination(t2);
535	–	}
613
537	–	/**
538	–	* Read lock succeeds if write locked by current thread even if
539	–	* other threads are waiting for writelock
540	–	*/
541	–	public void testReadHoldingWriteLock3() throws InterruptedException {
542	–	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
543	–	lock.writeLock().lock();
544	–	lock.readLock().lock();
545	–	lock.readLock().unlock();
546	–
547	–	Thread t1 = newStartedThread(new CheckedRunnable() {
548	–	public void realRun() {
549	–	lock.writeLock().lock();
550	–	lock.writeLock().unlock();
551	–	}});
614		Thread t2 = newStartedThread(new CheckedRunnable() {
615		public void realRun() {
616	<	lock.writeLock().lock();
617	<	lock.writeLock().unlock();
616	>	lock.readLock().lock();
617	>	lock.readLock().unlock();
618		}});
619
620	<	waitForQueuedThread(lock, t1);
621	<	waitForQueuedThread(lock, t2);
560	<	assertWriteLockedBy(lock, Thread.currentThread());
561	<	lock.readLock().lock();
562	<	lock.readLock().unlock();
563	<	releaseWriteLock(lock);
564	<	awaitTermination(t1);
565	<	awaitTermination(t2);
566	<	}
567	<
568	<	/**
569	<	* Write lock succeeds if write locked by current thread even if
570	<	* other threads are waiting for writelock
571	<	*/
572	<	public void testWriteHoldingWriteLock4() throws InterruptedException {
573	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
574	<	lock.writeLock().lock();
575	<	lock.writeLock().lock();
576	<	lock.writeLock().unlock();
620	>	if (fair)
621	>	waitForQueuedThread(lock, t2);
622
623	<	Thread t1 = newStartedThread(new CheckedRunnable() {
623	>	Thread t3 = newStartedThread(new CheckedRunnable() {
624		public void realRun() {
625	<	lock.writeLock().lock();
626	<	lock.writeLock().unlock();
582	<	}});
583	<	Thread t2 = newStartedThread(new CheckedRunnable() {
584	<	public void realRun() {
585	<	lock.writeLock().lock();
586	<	lock.writeLock().unlock();
625	>	lock.readLock().tryLock();
626	>	lock.readLock().unlock();
627		}});
628
629	<	waitForQueuedThread(lock, t1);
630	<	waitForQueuedThread(lock, t2);
631	<	assertWriteLockedBy(lock, Thread.currentThread());
632	<	assertEquals(1, lock.getWriteHoldCount());
633	<	lock.writeLock().lock();
594	<	assertWriteLockedBy(lock, Thread.currentThread());
595	<	assertEquals(2, lock.getWriteHoldCount());
596	<	lock.writeLock().unlock();
597	<	releaseWriteLock(lock);
629	>	assertTrue(lock.getReadLockCount() > 0);
630	>	awaitTermination(t3);
631	>	assertTrue(t1.isAlive());
632	>	if (fair) assertTrue(t2.isAlive());
633	>	lock.readLock().unlock();
634		awaitTermination(t1);
635		awaitTermination(t2);
636		}
637
638		/**
639	<	* Fair Read trylock succeeds if write locked by current thread
604	<	*/
605	<	public void testReadHoldingWriteLockFair() {
606	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
607	<	lock.writeLock().lock();
608	<	assertTrue(lock.readLock().tryLock());
609	<	lock.readLock().unlock();
610	<	lock.writeLock().unlock();
611	<	}
612	<
613	<	/**
614	<	* Fair Read lock succeeds if write locked by current thread even if
639	>	* Read lock succeeds if write locked by current thread even if
640		* other threads are waiting for readlock
641		*/
642	<	public void testReadHoldingWriteLockFair2() throws InterruptedException {
643	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
642	>	public void testReadHoldingWriteLock2()      { testReadHoldingWriteLock2(false); }
643	>	public void testReadHoldingWriteLock2_fair() { testReadHoldingWriteLock2(true); }
644	>	public void testReadHoldingWriteLock2(boolean fair) {
645	>	final PublicReentrantReadWriteLock lock =
646	>	new PublicReentrantReadWriteLock(fair);
647		lock.writeLock().lock();
648		lock.readLock().lock();
649		lock.readLock().unlock();
#	Line 633 | Line 661 | public class ReentrantReadWriteLockTest
661
662		waitForQueuedThread(lock, t1);
663		waitForQueuedThread(lock, t2);
664	<	assertWriteLockedBy(lock, Thread.currentThread());
664	>	assertWriteLockedByMoi(lock);
665		lock.readLock().lock();
666		lock.readLock().unlock();
667		releaseWriteLock(lock);
#	Line 642 | Line 670 | public class ReentrantReadWriteLockTest
670		}
671
672		/**
673	<	* Fair Read lock succeeds if write locked by current thread even if
673	>	* Read lock succeeds if write locked by current thread even if
674		* other threads are waiting for writelock
675		*/
676	<	public void testReadHoldingWriteLockFair3() throws InterruptedException {
677	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
676	>	public void testReadHoldingWriteLock3()      { testReadHoldingWriteLock3(false); }
677	>	public void testReadHoldingWriteLock3_fair() { testReadHoldingWriteLock3(true); }
678	>	public void testReadHoldingWriteLock3(boolean fair) {
679	>	final PublicReentrantReadWriteLock lock =
680	>	new PublicReentrantReadWriteLock(fair);
681		lock.writeLock().lock();
682		lock.readLock().lock();
683		lock.readLock().unlock();
#	Line 664 | Line 695 | public class ReentrantReadWriteLockTest
695
696		waitForQueuedThread(lock, t1);
697		waitForQueuedThread(lock, t2);
698	<	assertWriteLockedBy(lock, Thread.currentThread());
698	>	assertWriteLockedByMoi(lock);
699		lock.readLock().lock();
700		lock.readLock().unlock();
701	<	releaseWriteLock(lock);
701	>	assertWriteLockedByMoi(lock);
702	>	lock.writeLock().unlock();
703		awaitTermination(t1);
704		awaitTermination(t2);
705		}
706
707		/**
708	<	* Fair Write lock succeeds if write locked by current thread even if
708	>	* Write lock succeeds if write locked by current thread even if
709		* other threads are waiting for writelock
710		*/
711	<	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
712	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
711	>	public void testWriteHoldingWriteLock4()      { testWriteHoldingWriteLock4(false); }
712	>	public void testWriteHoldingWriteLock4_fair() { testWriteHoldingWriteLock4(true); }
713	>	public void testWriteHoldingWriteLock4(boolean fair) {
714	>	final PublicReentrantReadWriteLock lock =
715	>	new PublicReentrantReadWriteLock(fair);
716		lock.writeLock().lock();
717	+	lock.writeLock().lock();
718	+	lock.writeLock().unlock();
719	+
720		Thread t1 = newStartedThread(new CheckedRunnable() {
721		public void realRun() {
722		lock.writeLock().lock();
#	Line 692 | Line 730 | public class ReentrantReadWriteLockTest
730
731		waitForQueuedThread(lock, t1);
732		waitForQueuedThread(lock, t2);
733	<	assertWriteLockedBy(lock, Thread.currentThread());
733	>	assertWriteLockedByMoi(lock);
734		assertEquals(1, lock.getWriteHoldCount());
735		lock.writeLock().lock();
736	+	assertWriteLockedByMoi(lock);
737		assertEquals(2, lock.getWriteHoldCount());
738		lock.writeLock().unlock();
739	<	lock.writeLock().lock();
739	>	assertWriteLockedByMoi(lock);
740	>	assertEquals(1, lock.getWriteHoldCount());
741		lock.writeLock().unlock();
702	–	releaseWriteLock(lock);
742		awaitTermination(t1);
743		awaitTermination(t2);
744		}
#	Line 707 | Line 746 | public class ReentrantReadWriteLockTest
746		/**
747		* Read tryLock succeeds if readlocked but not writelocked
748		*/
749	<	public void testTryLockWhenReadLocked() throws InterruptedException {
750	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
749	>	public void testTryLockWhenReadLocked()      { testTryLockWhenReadLocked(false); }
750	>	public void testTryLockWhenReadLocked_fair() { testTryLockWhenReadLocked(true); }
751	>	public void testTryLockWhenReadLocked(boolean fair) {
752	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
753		lock.readLock().lock();
754		Thread t = newStartedThread(new CheckedRunnable() {
755		public void realRun() {
#	Line 723 | Line 764 | public class ReentrantReadWriteLockTest
764		/**
765		* write tryLock fails when readlocked
766		*/
767	<	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
768	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
769	<	lock.readLock().lock();
770	<	Thread t = newStartedThread(new CheckedRunnable() {
730	<	public void realRun() {
731	<	assertFalse(lock.writeLock().tryLock());
732	<	}});
733	<
734	<	awaitTermination(t);
735	<	lock.readLock().unlock();
736	<	}
737	<
738	<	/**
739	<	* Fair Read tryLock succeeds if readlocked but not writelocked
740	<	*/
741	<	public void testTryLockWhenReadLockedFair() throws InterruptedException {
742	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
743	<	lock.readLock().lock();
744	<	Thread t = newStartedThread(new CheckedRunnable() {
745	<	public void realRun() {
746	<	assertTrue(lock.readLock().tryLock());
747	<	lock.readLock().unlock();
748	<	}});
749	<
750	<	awaitTermination(t);
751	<	lock.readLock().unlock();
752	<	}
753	<
754	<	/**
755	<	* Fair write tryLock fails when readlocked
756	<	*/
757	<	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
758	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
767	>	public void testWriteTryLockWhenReadLocked()      { testWriteTryLockWhenReadLocked(false); }
768	>	public void testWriteTryLockWhenReadLocked_fair() { testWriteTryLockWhenReadLocked(true); }
769	>	public void testWriteTryLockWhenReadLocked(boolean fair) {
770	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
771		lock.readLock().lock();
772		Thread t = newStartedThread(new CheckedRunnable() {
773		public void realRun() {
#	Line 769 | Line 781 | public class ReentrantReadWriteLockTest
781		/**
782		* write timed tryLock times out if locked
783		*/
784	<	public void testWriteTryLock_Timeout() throws InterruptedException {
785	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
784	>	public void testWriteTryLock_Timeout()      { testWriteTryLock_Timeout(false); }
785	>	public void testWriteTryLock_Timeout_fair() { testWriteTryLock_Timeout(true); }
786	>	public void testWriteTryLock_Timeout(boolean fair) {
787	>	final PublicReentrantReadWriteLock lock =
788	>	new PublicReentrantReadWriteLock(fair);
789		lock.writeLock().lock();
790		Thread t = newStartedThread(new CheckedRunnable() {
791		public void realRun() throws InterruptedException {
792	<	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
792	>	long startTime = System.nanoTime();
793	>	long timeoutMillis = 10;
794	>	assertFalse(lock.writeLock().tryLock(timeoutMillis, MILLISECONDS));
795	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
796		}});
797
798		awaitTermination(t);
799	<	assertTrue(lock.writeLock().isHeldByCurrentThread());
782	<	lock.writeLock().unlock();
799	>	releaseWriteLock(lock);
800		}
801
802		/**
803		* read timed tryLock times out if write-locked
804		*/
805	<	public void testReadTryLock_Timeout() throws InterruptedException {
806	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
805	>	public void testReadTryLock_Timeout()      { testReadTryLock_Timeout(false); }
806	>	public void testReadTryLock_Timeout_fair() { testReadTryLock_Timeout(true); }
807	>	public void testReadTryLock_Timeout(boolean fair) {
808	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
809		lock.writeLock().lock();
810		Thread t = newStartedThread(new CheckedRunnable() {
811		public void realRun() throws InterruptedException {
812	<	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
812	>	long startTime = System.nanoTime();
813	>	long timeoutMillis = 10;
814	>	assertFalse(lock.readLock().tryLock(timeoutMillis, MILLISECONDS));
815	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
816		}});
817
818		awaitTermination(t);
#	Line 799 | Line 821 | public class ReentrantReadWriteLockTest
821		}
822
823		/**
824	<	* write lockInterruptibly succeeds if lock free else is interruptible
824	>	* write lockInterruptibly succeeds if unlocked, else is interruptible
825		*/
826	<	public void testWriteLockInterruptibly() throws InterruptedException {
827	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
828	<	lock.writeLock().lockInterruptibly();
826	>	public void testWriteLockInterruptibly()      { testWriteLockInterruptibly(false); }
827	>	public void testWriteLockInterruptibly_fair() { testWriteLockInterruptibly(true); }
828	>	public void testWriteLockInterruptibly(boolean fair) {
829	>	final PublicReentrantReadWriteLock lock =
830	>	new PublicReentrantReadWriteLock(fair);
831	>	try {
832	>	lock.writeLock().lockInterruptibly();
833	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
834		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
835		public void realRun() throws InterruptedException {
836		lock.writeLock().lockInterruptibly();
#	Line 811 | Line 838 | public class ReentrantReadWriteLockTest
838
839		waitForQueuedThread(lock, t);
840		t.interrupt();
841	+	assertTrue(lock.writeLock().isHeldByCurrentThread());
842		awaitTermination(t);
843		releaseWriteLock(lock);
844		}
#	Line 818 | Line 846 | public class ReentrantReadWriteLockTest
846		/**
847		* read lockInterruptibly succeeds if lock free else is interruptible
848		*/
849	<	public void testReadLockInterruptibly() throws InterruptedException {
850	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
851	<	lock.writeLock().lockInterruptibly();
849	>	public void testReadLockInterruptibly()      { testReadLockInterruptibly(false); }
850	>	public void testReadLockInterruptibly_fair() { testReadLockInterruptibly(true); }
851	>	public void testReadLockInterruptibly(boolean fair) {
852	>	final PublicReentrantReadWriteLock lock =
853	>	new PublicReentrantReadWriteLock(fair);
854	>	try {
855	>	lock.readLock().lockInterruptibly();
856	>	lock.readLock().unlock();
857	>	lock.writeLock().lockInterruptibly();
858	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
859		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
860		public void realRun() throws InterruptedException {
861		lock.readLock().lockInterruptibly();
#	Line 835 | Line 870 | public class ReentrantReadWriteLockTest
870		/**
871		* Calling await without holding lock throws IllegalMonitorStateException
872		*/
873	<	public void testAwait_IllegalMonitor() throws InterruptedException {
874	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
875	<	final Condition c = lock.writeLock().newCondition();
876	<	try {
877	<	c.await();
878	<	shouldThrow();
879	<	} catch (IllegalMonitorStateException success) {}
880	<	try {
881	<	c.await(LONG_DELAY_MS, MILLISECONDS);
882	<	shouldThrow();
883	<	} catch (IllegalMonitorStateException success) {}
884	<	try {
885	<	c.awaitNanos(100);
886	<	shouldThrow();
887	<	} catch (IllegalMonitorStateException success) {}
888	<	try {
854	<	c.awaitUninterruptibly();
855	<	shouldThrow();
856	<	} catch (IllegalMonitorStateException success) {}
873	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
874	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
875	>	public void testAwait_IMSE(boolean fair) {
876	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
877	>	final Condition c = lock.writeLock().newCondition();
878	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
879	>	long startTime = System.nanoTime();
880	>	try {
881	>	await(c, awaitMethod);
882	>	shouldThrow();
883	>	} catch (IllegalMonitorStateException success) {
884	>	} catch (InterruptedException fail) {
885	>	threadUnexpectedException(fail);
886	>	}
887	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
888	>	}
889		}
890
891		/**
892		* Calling signal without holding lock throws IllegalMonitorStateException
893		*/
894	<	public void testSignal_IllegalMonitor() {
895	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
894	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
895	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
896	>	public void testSignal_IMSE(boolean fair) {
897	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
898		final Condition c = lock.writeLock().newCondition();
899		try {
900		c.signal();
#	Line 871 | Line 905 | public class ReentrantReadWriteLockTest
905		/**
906		* Calling signalAll without holding lock throws IllegalMonitorStateException
907		*/
908	<	public void testSignalAll_IllegalMonitor() {
909	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
908	>	public void testSignalAll_IMSE()      { testSignalAll_IMSE(false); }
909	>	public void testSignalAll_IMSE_fair() { testSignalAll_IMSE(true); }
910	>	public void testSignalAll_IMSE(boolean fair) {
911	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
912		final Condition c = lock.writeLock().newCondition();
913		try {
914		c.signalAll();
#	Line 883 | Line 919 | public class ReentrantReadWriteLockTest
919		/**
920		* awaitNanos without a signal times out
921		*/
922	<	public void testAwaitNanos_Timeout() throws InterruptedException {
923	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
924	<	final Condition c = lock.writeLock().newCondition();
925	<	lock.writeLock().lock();
926	<	long startTime = System.nanoTime();
927	<	long timeoutMillis = 10;
928	<	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
929	<	long nanosRemaining = c.awaitNanos(timeoutNanos);
930	<	assertTrue(nanosRemaining <= 0);
931	<	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
932	<	lock.writeLock().unlock();
922	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
923	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
924	>	public void testAwaitNanos_Timeout(boolean fair) {
925	>	try {
926	>	final ReentrantReadWriteLock lock =
927	>	new ReentrantReadWriteLock(fair);
928	>	final Condition c = lock.writeLock().newCondition();
929	>	lock.writeLock().lock();
930	>	long startTime = System.nanoTime();
931	>	long timeoutMillis = 10;
932	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
933	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
934	>	assertTrue(nanosRemaining <= 0);
935	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
936	>	lock.writeLock().unlock();
937	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
938		}
939
940		/**
941		* timed await without a signal times out
942		*/
943	<	public void testAwait_Timeout() throws InterruptedException {
944	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
945	<	final Condition c = lock.writeLock().newCondition();
946	<	lock.writeLock().lock();
947	<	long startTime = System.nanoTime();
948	<	long timeoutMillis = 10;
949	<	assertFalse(c.await(timeoutMillis, MILLISECONDS));
950	<	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
951	<	lock.writeLock().unlock();
943	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
944	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
945	>	public void testAwait_Timeout(boolean fair) {
946	>	try {
947	>	final ReentrantReadWriteLock lock =
948	>	new ReentrantReadWriteLock(fair);
949	>	final Condition c = lock.writeLock().newCondition();
950	>	lock.writeLock().lock();
951	>	long startTime = System.nanoTime();
952	>	long timeoutMillis = 10;
953	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
954	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
955	>	lock.writeLock().unlock();
956	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
957		}
958
959		/**
960		* awaitUntil without a signal times out
961		*/
962	<	public void testAwaitUntil_Timeout() throws InterruptedException {
963	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
964	<	final Condition c = lock.writeLock().newCondition();
965	<	lock.writeLock().lock();
966	<	java.util.Date d = new java.util.Date();
967	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
968	<	lock.writeLock().unlock();
962	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
963	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
964	>	public void testAwaitUntil_Timeout(boolean fair) {
965	>	try {
966	>	final ReentrantReadWriteLock lock =
967	>	new ReentrantReadWriteLock(fair);
968	>	final Condition c = lock.writeLock().newCondition();
969	>	lock.writeLock().lock();
970	>	long startTime = System.nanoTime();
971	>	long timeoutMillis = 10;
972	>	java.util.Date d = new java.util.Date();
973	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
974	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
975	>	lock.writeLock().unlock();
976	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
977		}
978
979		/**
980		* await returns when signalled
981		*/
982	<	public void testAwait() throws InterruptedException {
983	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
982	>	public void testAwait()      { testAwait(false); }
983	>	public void testAwait_fair() { testAwait(true); }
984	>	public void testAwait(boolean fair) {
985	>	final PublicReentrantReadWriteLock lock =
986	>	new PublicReentrantReadWriteLock(fair);
987		final Condition c = lock.writeLock().newCondition();
988		final CountDownLatch locked = new CountDownLatch(1);
989		Thread t = newStartedThread(new CheckedRunnable() {
#	Line 937 | 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);
1005		}
1006
1007		/**
1008	<	* awaitUninterruptibly doesn't abort on interrupt
1008	>	* awaitUninterruptibly is uninterruptible
1009		*/
1010	<	public void testAwaitUninterruptibly() throws InterruptedException {
1011	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1010	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
1011	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
1012	>	public void testAwaitUninterruptibly(boolean fair) {
1013	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1014		final Condition c = lock.writeLock().newCondition();
1015	<	final CountDownLatch locked = new CountDownLatch(1);
1016	<	final AtomicBoolean canAwake = new AtomicBoolean(false);
1017	<	Thread t = newStartedThread(new CheckedRunnable() {
1015	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
1016	>
1017	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1018		public void realRun() {
1019	+	// Interrupt before awaitUninterruptibly
1020		lock.writeLock().lock();
1021	<	locked.countDown();
1021	>	pleaseInterrupt.countDown();
1022	>	Thread.currentThread().interrupt();
1023		c.awaitUninterruptibly();
1024		assertTrue(Thread.interrupted());
1025		lock.writeLock().unlock();
1026		}});
1027
1028	<	locked.await();
1029	<	lock.writeLock().lock();
1030	<	lock.writeLock().unlock();
968	<	t.interrupt();
969	<	t.join(10);
970	<	assertTrue(t.isAlive());
971	<	lock.writeLock().lock();
972	<	c.signal();
973	<	lock.writeLock().unlock();
974	<	awaitTermination(t);
975	<	}
976	<
977	<	/**
978	<	* await is interruptible
979	<	*/
980	<	public void testAwait_Interrupt() throws InterruptedException {
981	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
982	<	final Condition c = lock.writeLock().newCondition();
983	<	final CountDownLatch locked = new CountDownLatch(1);
984	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
985	<	public void realRun() throws InterruptedException {
1028	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1029	>	public void realRun() {
1030	>	// Interrupt during awaitUninterruptibly
1031		lock.writeLock().lock();
1032	<	assertWriteLockedBy(lock, Thread.currentThread());
1033	<	assertHasNoWaiters(lock, c);
1034	<	locked.countDown();
1035	<	try {
991	<	c.await();
992	<	} finally {
993	<	assertWriteLockedBy(lock, Thread.currentThread());
994	<	assertHasNoWaiters(lock, c);
995	<	lock.writeLock().unlock();
996	<	assertFalse(Thread.interrupted());
997	<	}
1032	>	pleaseInterrupt.countDown();
1033	>	c.awaitUninterruptibly();
1034	>	assertTrue(Thread.interrupted());
1035	>	lock.writeLock().unlock();
1036		}});
1037
1038	<	locked.await();
1039	<	assertHasWaiters(lock, c, t);
1040	<	t.interrupt();
1041	<	awaitTermination(t);
1004	<	assertNotWriteLocked(lock);
1005	<	}
1038	>	await(pleaseInterrupt);
1039	>	lock.writeLock().lock();
1040	>	lock.writeLock().unlock();
1041	>	t2.interrupt();
1042
1043	<	/**
1044	<	* awaitNanos is interruptible
1009	<	*/
1010	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
1011	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1012	<	final Condition c = lock.writeLock().newCondition();
1013	<	final CountDownLatch locked = new CountDownLatch(1);
1014	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1015	<	public void realRun() throws InterruptedException {
1016	<	lock.writeLock().lock();
1017	<	assertWriteLockedBy(lock, Thread.currentThread());
1018	<	assertHasNoWaiters(lock, c);
1019	<	locked.countDown();
1020	<	try {
1021	<	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
1022	<	} finally {
1023	<	assertWriteLockedBy(lock, Thread.currentThread());
1024	<	assertHasNoWaiters(lock, c);
1025	<	lock.writeLock().unlock();
1026	<	assertFalse(Thread.interrupted());
1027	<	}
1028	<	}});
1043	>	assertThreadStaysAlive(t1);
1044	>	assertTrue(t2.isAlive());
1045
1046	<	locked.await();
1047	<	assertHasWaiters(lock, c, t);
1048	<	t.interrupt();
1049	<	awaitTermination(t);
1050	<	assertNotWriteLocked(lock);
1046	>	lock.writeLock().lock();
1047	>	c.signalAll();
1048	>	lock.writeLock().unlock();
1049	>
1050	>	awaitTermination(t1);
1051	>	awaitTermination(t2);
1052		}
1053
1054		/**
1055	<	* awaitUntil is interruptible
1055	>	* await/awaitNanos/awaitUntil is interruptible
1056		*/
1057	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
1058	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1057	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
1058	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
1059	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
1060	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
1061	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
1062	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
1063	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
1064	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
1065	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
1066	>	final PublicReentrantReadWriteLock lock =
1067	>	new PublicReentrantReadWriteLock(fair);
1068		final Condition c = lock.writeLock().newCondition();
1069		final CountDownLatch locked = new CountDownLatch(1);
1070		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1071		public void realRun() throws InterruptedException {
1072		lock.writeLock().lock();
1073	<	assertWriteLockedBy(lock, Thread.currentThread());
1073	>	assertWriteLockedByMoi(lock);
1074		assertHasNoWaiters(lock, c);
1075		locked.countDown();
1050	–	java.util.Date d = new java.util.Date();
1076		try {
1077	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1077	>	await(c, awaitMethod);
1078		} finally {
1079	<	assertWriteLockedBy(lock, Thread.currentThread());
1079	>	assertWriteLockedByMoi(lock);
1080		assertHasNoWaiters(lock, c);
1081		lock.writeLock().unlock();
1082		assertFalse(Thread.interrupted());
1083		}
1084		}});
1085
1086	<	locked.await();
1086	>	await(locked);
1087		assertHasWaiters(lock, c, t);
1088		t.interrupt();
1089		awaitTermination(t);
#	Line 1068 | Line 1093 | public class ReentrantReadWriteLockTest
1093		/**
1094		* signalAll wakes up all threads
1095		*/
1096	<	public void testSignalAll() throws InterruptedException {
1097	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1096	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
1097	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
1098	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
1099	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
1100	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
1101	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
1102	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
1103	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
1104	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
1105	>	final PublicReentrantReadWriteLock lock =
1106	>	new PublicReentrantReadWriteLock(fair);
1107		final Condition c = lock.writeLock().newCondition();
1108		final CountDownLatch locked = new CountDownLatch(2);
1109		final Lock writeLock = lock.writeLock();
1110	<	Thread t1 = newStartedThread(new CheckedRunnable() {
1110	>	class Awaiter extends CheckedRunnable {
1111		public void realRun() throws InterruptedException {
1112		writeLock.lock();
1113		locked.countDown();
1114	<	c.await();
1114	>	await(c, awaitMethod);
1115		writeLock.unlock();
1116	<	}});
1116	>	}
1117	>	}
1118
1119	<	Thread t2 = newStartedThread(new CheckedRunnable() {
1120	<	public void realRun() throws InterruptedException {
1086	<	writeLock.lock();
1087	<	locked.countDown();
1088	<	c.await();
1089	<	writeLock.unlock();
1090	<	}});
1119	>	Thread t1 = newStartedThread(new Awaiter());
1120	>	Thread t2 = newStartedThread(new Awaiter());
1121
1122	<	locked.await();
1122	>	await(locked);
1123		writeLock.lock();
1124		assertHasWaiters(lock, c, t1, t2);
1125		c.signalAll();
#	Line 1100 | Line 1130 | public class ReentrantReadWriteLockTest
1130		}
1131
1132		/**
1133	<	* signal wakes up waiting threads in FIFO order.
1133	>	* signal wakes up waiting threads in FIFO order
1134		*/
1135	<	public void testSignalWakesFifo() throws InterruptedException {
1136	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1135	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1136	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1137	>	public void testSignalWakesFifo(boolean fair) {
1138	>	final PublicReentrantReadWriteLock lock =
1139	>	new PublicReentrantReadWriteLock(fair);
1140		final Condition c = lock.writeLock().newCondition();
1141		final CountDownLatch locked1 = new CountDownLatch(1);
1142		final CountDownLatch locked2 = new CountDownLatch(1);
#	Line 1116 | Line 1149 | public class ReentrantReadWriteLockTest
1149		writeLock.unlock();
1150		}});
1151
1152	<	locked1.await();
1152	>	await(locked1);
1153
1154		Thread t2 = newStartedThread(new CheckedRunnable() {
1155		public void realRun() throws InterruptedException {
#	Line 1126 | Line 1159 | public class ReentrantReadWriteLockTest
1159		writeLock.unlock();
1160		}});
1161
1162	<	locked2.await();
1162	>	await(locked2);
1163
1164		writeLock.lock();
1165		assertHasWaiters(lock, c, t1, t2);
#	Line 1145 | Line 1178 | public class ReentrantReadWriteLockTest
1178		}
1179
1180		/**
1181	+	* await after multiple reentrant locking preserves lock count
1182	+	*/
1183	+	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1184	+	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1185	+	public void testAwaitLockCount(boolean fair) {
1186	+	final PublicReentrantReadWriteLock lock =
1187	+	new PublicReentrantReadWriteLock(fair);
1188	+	final Condition c = lock.writeLock().newCondition();
1189	+	final CountDownLatch locked = new CountDownLatch(2);
1190	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1191	+	public void realRun() throws InterruptedException {
1192	+	lock.writeLock().lock();
1193	+	assertWriteLockedByMoi(lock);
1194	+	assertEquals(1, lock.writeLock().getHoldCount());
1195	+	locked.countDown();
1196	+	c.await();
1197	+	assertWriteLockedByMoi(lock);
1198	+	assertEquals(1, lock.writeLock().getHoldCount());
1199	+	lock.writeLock().unlock();
1200	+	}});
1201	+
1202	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1203	+	public void realRun() throws InterruptedException {
1204	+	lock.writeLock().lock();
1205	+	lock.writeLock().lock();
1206	+	assertWriteLockedByMoi(lock);
1207	+	assertEquals(2, lock.writeLock().getHoldCount());
1208	+	locked.countDown();
1209	+	c.await();
1210	+	assertWriteLockedByMoi(lock);
1211	+	assertEquals(2, lock.writeLock().getHoldCount());
1212	+	lock.writeLock().unlock();
1213	+	lock.writeLock().unlock();
1214	+	}});
1215	+
1216	+	await(locked);
1217	+	lock.writeLock().lock();
1218	+	assertHasWaiters(lock, c, t1, t2);
1219	+	c.signalAll();
1220	+	assertHasNoWaiters(lock, c);
1221	+	lock.writeLock().unlock();
1222	+	awaitTermination(t1);
1223	+	awaitTermination(t2);
1224	+	}
1225	+
1226	+	/**
1227		* A serialized lock deserializes as unlocked
1228		*/
1229	<	public void testSerialization() throws Exception {
1230	<	ReentrantReadWriteLock l = new ReentrantReadWriteLock();
1231	<	l.readLock().lock();
1232	<	l.readLock().unlock();
1233	<
1234	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1235	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1236	<	out.writeObject(l);
1237	<	out.close();
1238	<
1239	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1240	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1241	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
1242	<	r.readLock().lock();
1243	<	r.readLock().unlock();
1229	>	public void testSerialization()      { testSerialization(false); }
1230	>	public void testSerialization_fair() { testSerialization(true); }
1231	>	public void testSerialization(boolean fair) {
1232	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1233	>	lock.writeLock().lock();
1234	>	lock.readLock().lock();
1235	>
1236	>	ReentrantReadWriteLock clone = serialClone(lock);
1237	>	assertEquals(lock.isFair(), clone.isFair());
1238	>	assertTrue(lock.isWriteLocked());
1239	>	assertFalse(clone.isWriteLocked());
1240	>	assertEquals(1, lock.getReadLockCount());
1241	>	assertEquals(0, clone.getReadLockCount());
1242	>	clone.writeLock().lock();
1243	>	clone.readLock().lock();
1244	>	assertTrue(clone.isWriteLocked());
1245	>	assertEquals(1, clone.getReadLockCount());
1246	>	clone.readLock().unlock();
1247	>	clone.writeLock().unlock();
1248	>	assertFalse(clone.isWriteLocked());
1249	>	assertEquals(1, lock.getReadLockCount());
1250	>	assertEquals(0, clone.getReadLockCount());
1251		}
1252
1253		/**
1254		* hasQueuedThreads reports whether there are waiting threads
1255		*/
1256	<	public void testhasQueuedThreads() throws InterruptedException {
1257	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1256	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
1257	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
1258	>	public void testHasQueuedThreads(boolean fair) {
1259	>	final PublicReentrantReadWriteLock lock =
1260	>	new PublicReentrantReadWriteLock(fair);
1261		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1262		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1263		assertFalse(lock.hasQueuedThreads());
1264		lock.writeLock().lock();
1265		assertFalse(lock.hasQueuedThreads());
1177	–	long startTime = System.nanoTime();
1266		t1.start();
1267		waitForQueuedThread(lock, t1);
1268	+	assertTrue(lock.hasQueuedThreads());
1269		t2.start();
1270		waitForQueuedThread(lock, t2);
1271		assertTrue(lock.hasQueuedThreads());
#	Line 1191 | Line 1280 | public class ReentrantReadWriteLockTest
1280		/**
1281		* hasQueuedThread(null) throws NPE
1282		*/
1283	<	public void testHasQueuedThreadNPE() {
1284	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1283	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
1284	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
1285	>	public void testHasQueuedThreadNPE(boolean fair) {
1286	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1287		try {
1288	<	sync.hasQueuedThread(null);
1288	>	lock.hasQueuedThread(null);
1289		shouldThrow();
1290		} catch (NullPointerException success) {}
1291		}
1292
1293		/**
1294	<	* hasQueuedThread reports whether a thread is queued.
1294	>	* hasQueuedThread reports whether a thread is queued
1295		*/
1296	<	public void testHasQueuedThread() throws InterruptedException {
1297	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1296	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
1297	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
1298	>	public void testHasQueuedThread(boolean fair) {
1299	>	final PublicReentrantReadWriteLock lock =
1300	>	new PublicReentrantReadWriteLock(fair);
1301		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1302		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1303		assertFalse(lock.hasQueuedThread(t1));
1304		assertFalse(lock.hasQueuedThread(t2));
1305		lock.writeLock().lock();
1212	–	long startTime = System.nanoTime();
1306		t1.start();
1307		waitForQueuedThread(lock, t1);
1308		assertTrue(lock.hasQueuedThread(t1));
#	Line 1231 | Line 1324 | public class ReentrantReadWriteLockTest
1324		/**
1325		* getQueueLength reports number of waiting threads
1326		*/
1327	<	public void testGetQueueLength() throws InterruptedException {
1328	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1327	>	public void testGetQueueLength()      { testGetQueueLength(false); }
1328	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
1329	>	public void testGetQueueLength(boolean fair) {
1330	>	final PublicReentrantReadWriteLock lock =
1331	>	new PublicReentrantReadWriteLock(fair);
1332		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1333		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1334		assertEquals(0, lock.getQueueLength());
1335		lock.writeLock().lock();
1240	–	long startTime = System.nanoTime();
1336		t1.start();
1337		waitForQueuedThread(lock, t1);
1338		assertEquals(1, lock.getQueueLength());
#	Line 1255 | Line 1350 | public class ReentrantReadWriteLockTest
1350		/**
1351		* getQueuedThreads includes waiting threads
1352		*/
1353	<	public void testGetQueuedThreads() throws InterruptedException {
1354	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1353	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
1354	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
1355	>	public void testGetQueuedThreads(boolean fair) {
1356	>	final PublicReentrantReadWriteLock lock =
1357	>	new PublicReentrantReadWriteLock(fair);
1358		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1359		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1360		assertTrue(lock.getQueuedThreads().isEmpty());
1361		lock.writeLock().lock();
1264	–	long startTime = System.nanoTime();
1362		assertTrue(lock.getQueuedThreads().isEmpty());
1363		t1.start();
1364		waitForQueuedThread(lock, t1);
#	Line 1285 | Line 1382 | public class ReentrantReadWriteLockTest
1382		/**
1383		* hasWaiters throws NPE if null
1384		*/
1385	<	public void testHasWaitersNPE() {
1386	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1385	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
1386	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
1387	>	public void testHasWaitersNPE(boolean fair) {
1388	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1389		try {
1390		lock.hasWaiters(null);
1391		shouldThrow();
#	Line 1296 | Line 1395 | public class ReentrantReadWriteLockTest
1395		/**
1396		* getWaitQueueLength throws NPE if null
1397		*/
1398	<	public void testGetWaitQueueLengthNPE() {
1399	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1398	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
1399	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
1400	>	public void testGetWaitQueueLengthNPE(boolean fair) {
1401	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1402		try {
1403		lock.getWaitQueueLength(null);
1404		shouldThrow();
#	Line 1307 | Line 1408 | public class ReentrantReadWriteLockTest
1408		/**
1409		* getWaitingThreads throws NPE if null
1410		*/
1411	<	public void testGetWaitingThreadsNPE() {
1412	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1411	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
1412	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
1413	>	public void testGetWaitingThreadsNPE(boolean fair) {
1414	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(fair);
1415		try {
1416		lock.getWaitingThreads(null);
1417		shouldThrow();
#	Line 1316 | Line 1419 | public class ReentrantReadWriteLockTest
1419		}
1420
1421		/**
1422	<	* hasWaiters throws IAE if not owned
1422	>	* hasWaiters throws IllegalArgumentException if not owned
1423		*/
1424	<	public void testHasWaitersIAE() {
1425	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1424	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
1425	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
1426	>	public void testHasWaitersIAE(boolean fair) {
1427	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1428		final Condition c = lock.writeLock().newCondition();
1429	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1429	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1430		try {
1431		lock2.hasWaiters(c);
1432		shouldThrow();
#	Line 1329 | Line 1434 | public class ReentrantReadWriteLockTest
1434		}
1435
1436		/**
1437	<	* hasWaiters throws IMSE if not locked
1437	>	* hasWaiters throws IllegalMonitorStateException if not locked
1438		*/
1439	<	public void testHasWaitersIMSE() {
1440	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1439	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
1440	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
1441	>	public void testHasWaitersIMSE(boolean fair) {
1442	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1443		final Condition c = lock.writeLock().newCondition();
1444		try {
1445		lock.hasWaiters(c);
#	Line 1341 | Line 1448 | public class ReentrantReadWriteLockTest
1448		}
1449
1450		/**
1451	<	* getWaitQueueLength throws IAE if not owned
1451	>	* getWaitQueueLength throws IllegalArgumentException if not owned
1452		*/
1453	<	public void testGetWaitQueueLengthIAE() {
1454	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1453	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
1454	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
1455	>	public void testGetWaitQueueLengthIAE(boolean fair) {
1456	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1457		final Condition c = lock.writeLock().newCondition();
1458	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1458	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1459		try {
1460		lock2.getWaitQueueLength(c);
1461		shouldThrow();
#	Line 1354 | Line 1463 | public class ReentrantReadWriteLockTest
1463		}
1464
1465		/**
1466	<	* getWaitQueueLength throws IMSE if not locked
1466	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
1467		*/
1468	<	public void testGetWaitQueueLengthIMSE() {
1469	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1468	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
1469	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
1470	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
1471	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1472		final Condition c = lock.writeLock().newCondition();
1473		try {
1474		lock.getWaitQueueLength(c);
#	Line 1366 | Line 1477 | public class ReentrantReadWriteLockTest
1477		}
1478
1479		/**
1480	<	* getWaitingThreads throws IAE if not owned
1480	>	* getWaitingThreads throws IllegalArgumentException if not owned
1481		*/
1482	<	public void testGetWaitingThreadsIAE() {
1483	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1482	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
1483	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
1484	>	public void testGetWaitingThreadsIAE(boolean fair) {
1485	>	final PublicReentrantReadWriteLock lock =
1486	>	new PublicReentrantReadWriteLock(fair);
1487		final Condition c = lock.writeLock().newCondition();
1488	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1488	>	final PublicReentrantReadWriteLock lock2 =
1489	>	new PublicReentrantReadWriteLock(fair);
1490		try {
1491		lock2.getWaitingThreads(c);
1492		shouldThrow();
#	Line 1379 | Line 1494 | public class ReentrantReadWriteLockTest
1494		}
1495
1496		/**
1497	<	* getWaitingThreads throws IMSE if not locked
1497	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
1498		*/
1499	<	public void testGetWaitingThreadsIMSE() {
1500	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1499	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
1500	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
1501	>	public void testGetWaitingThreadsIMSE(boolean fair) {
1502	>	final PublicReentrantReadWriteLock lock =
1503	>	new PublicReentrantReadWriteLock(fair);
1504		final Condition c = lock.writeLock().newCondition();
1505		try {
1506		lock.getWaitingThreads(c);
#	Line 1393 | Line 1511 | public class ReentrantReadWriteLockTest
1511		/**
1512		* hasWaiters returns true when a thread is waiting, else false
1513		*/
1514	<	public void testHasWaiters() throws InterruptedException {
1515	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1514	>	public void testHasWaiters()      { testHasWaiters(false); }
1515	>	public void testHasWaiters_fair() { testHasWaiters(true); }
1516	>	public void testHasWaiters(boolean fair) {
1517	>	final PublicReentrantReadWriteLock lock =
1518	>	new PublicReentrantReadWriteLock(fair);
1519		final Condition c = lock.writeLock().newCondition();
1520		final CountDownLatch locked = new CountDownLatch(1);
1521		Thread t = newStartedThread(new CheckedRunnable() {
1522		public void realRun() throws InterruptedException {
1523		lock.writeLock().lock();
1524	+	assertHasNoWaiters(lock, c);
1525		assertFalse(lock.hasWaiters(c));
1526		locked.countDown();
1405	–	assertEquals(0, lock.getWaitQueueLength(c));
1527		c.await();
1528	+	assertHasNoWaiters(lock, c);
1529	+	assertFalse(lock.hasWaiters(c));
1530		lock.writeLock().unlock();
1531		}});
1532
1533	<	locked.await();
1533	>	await(locked);
1534		lock.writeLock().lock();
1535	+	assertHasWaiters(lock, c, t);
1536		assertTrue(lock.hasWaiters(c));
1413	–	assertEquals(1, lock.getWaitQueueLength(c));
1537		c.signal();
1538		assertHasNoWaiters(lock, c);
1539	+	assertFalse(lock.hasWaiters(c));
1540		lock.writeLock().unlock();
1541		awaitTermination(t);
1542		assertHasNoWaiters(lock, c);
#	Line 1421 | Line 1545 | public class ReentrantReadWriteLockTest
1545		/**
1546		* getWaitQueueLength returns number of waiting threads
1547		*/
1548	<	public void testGetWaitQueueLength() throws InterruptedException {
1549	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1548	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
1549	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
1550	>	public void testGetWaitQueueLength(boolean fair) {
1551	>	final PublicReentrantReadWriteLock lock =
1552	>	new PublicReentrantReadWriteLock(fair);
1553		final Condition c = lock.writeLock().newCondition();
1554		final CountDownLatch locked = new CountDownLatch(1);
1555		Thread t = newStartedThread(new CheckedRunnable() {
#	Line 1434 | Line 1561 | public class ReentrantReadWriteLockTest
1561		lock.writeLock().unlock();
1562		}});
1563
1564	<	locked.await();
1564	>	await(locked);
1565		lock.writeLock().lock();
1566		assertHasWaiters(lock, c, t);
1567		assertEquals(1, lock.getWaitQueueLength(c));
#	Line 1448 | Line 1575 | public class ReentrantReadWriteLockTest
1575		/**
1576		* getWaitingThreads returns only and all waiting threads
1577		*/
1578	<	public void testGetWaitingThreads() throws InterruptedException {
1579	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1578	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
1579	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
1580	>	public void testGetWaitingThreads(boolean fair) {
1581	>	final PublicReentrantReadWriteLock lock =
1582	>	new PublicReentrantReadWriteLock(fair);
1583		final Condition c = lock.writeLock().newCondition();
1584		final CountDownLatch locked1 = new CountDownLatch(1);
1585		final CountDownLatch locked2 = new CountDownLatch(1);
#	Line 1476 | Line 1606 | public class ReentrantReadWriteLockTest
1606		lock.writeLock().unlock();
1607
1608		t1.start();
1609	<	locked1.await();
1609	>	await(locked1);
1610		t2.start();
1611	<	locked2.await();
1611	>	await(locked2);
1612
1613		lock.writeLock().lock();
1614		assertTrue(lock.hasWaiters(c));
#	Line 1498 | Line 1628 | public class ReentrantReadWriteLockTest
1628		/**
1629		* toString indicates current lock state
1630		*/
1631	<	public void testToString() {
1632	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1633	<	String us = lock.toString();
1634	<	assertTrue(us.indexOf("Write locks = 0") >= 0);
1635	<	assertTrue(us.indexOf("Read locks = 0") >= 0);
1636	<	lock.writeLock().lock();
1637	<	String ws = lock.toString();
1638	<	assertTrue(ws.indexOf("Write locks = 1") >= 0);
1639	<	assertTrue(ws.indexOf("Read locks = 0") >= 0);
1631	>	public void testToString()      { testToString(false); }
1632	>	public void testToString_fair() { testToString(true); }
1633	>	public void testToString(boolean fair) {
1634	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1635	>	assertTrue(lock.toString().contains("Write locks = 0"));
1636	>	assertTrue(lock.toString().contains("Read locks = 0"));
1637	>	lock.writeLock().lock();
1638	>	assertTrue(lock.toString().contains("Write locks = 1"));
1639	>	assertTrue(lock.toString().contains("Read locks = 0"));
1640		lock.writeLock().unlock();
1641		lock.readLock().lock();
1642		lock.readLock().lock();
1643	<	String rs = lock.toString();
1644	<	assertTrue(rs.indexOf("Write locks = 0") >= 0);
1515	<	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1643	>	assertTrue(lock.toString().contains("Write locks = 0"));
1644	>	assertTrue(lock.toString().contains("Read locks = 2"));
1645		}
1646
1647		/**
1648		* readLock.toString indicates current lock state
1649		*/
1650	<	public void testReadLockToString() {
1651	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1652	<	String us = lock.readLock().toString();
1653	<	assertTrue(us.indexOf("Read locks = 0") >= 0);
1650	>	public void testReadLockToString()      { testReadLockToString(false); }
1651	>	public void testReadLockToString_fair() { testReadLockToString(true); }
1652	>	public void testReadLockToString(boolean fair) {
1653	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1654	>	assertTrue(lock.readLock().toString().contains("Read locks = 0"));
1655		lock.readLock().lock();
1656		lock.readLock().lock();
1657	<	String rs = lock.readLock().toString();
1528	<	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1657	>	assertTrue(lock.readLock().toString().contains("Read locks = 2"));
1658		}
1659
1660		/**
1661		* writeLock.toString indicates current lock state
1662		*/
1663	<	public void testWriteLockToString() {
1664	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1665	<	String us = lock.writeLock().toString();
1666	<	assertTrue(us.indexOf("Unlocked") >= 0);
1663	>	public void testWriteLockToString()      { testWriteLockToString(false); }
1664	>	public void testWriteLockToString_fair() { testWriteLockToString(true); }
1665	>	public void testWriteLockToString(boolean fair) {
1666	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1667	>	assertTrue(lock.writeLock().toString().contains("Unlocked"));
1668		lock.writeLock().lock();
1669	<	String ls = lock.writeLock().toString();
1670	<	assertTrue(ls.indexOf("Locked") >= 0);
1669	>	assertTrue(lock.writeLock().toString().contains("Locked"));
1670	>	lock.writeLock().unlock();
1671	>	assertTrue(lock.writeLock().toString().contains("Unlocked"));
1672		}
1673
1674		}

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