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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.59 by jsr166, Sat May 7 19:03:26 2011 UTC vs.
Revision 1.77 by jsr166, Fri Jul 3 01:25:15 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 "indefinitely" using the specified AwaitMethod.
159	+	*/
160	+	void await(Condition c, AwaitMethod awaitMethod)
161	+	throws InterruptedException {
162	+	long timeoutMillis = 2 * LONG_DELAY_MS;
163	+	switch (awaitMethod) {
164	+	case await:
165	+	c.await();
166	+	break;
167	+	case awaitTimed:
168	+	assertTrue(c.await(timeoutMillis, MILLISECONDS));
169	+	break;
170	+	case awaitNanos:
171	+	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
172	+	long nanosRemaining = c.awaitNanos(timeoutNanos);
173	+	assertTrue(nanosRemaining > timeoutNanos / 2);
174	+	assertTrue(nanosRemaining <= timeoutNanos);
175	+	break;
176	+	case awaitUntil:
177	+	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
178	+	break;
179	+	default:
180	+	throw new AssertionError();
181	+	}
182	+	}
183	+
184		/**
185		* Constructor sets given fairness, and is in unlocked state
186		*/
#	Line 160 | Line 206 | public class ReentrantReadWriteLockTest
206		/**
207		* write-locking and read-locking an unlocked lock succeed
208		*/
209	<	public void testLock() {
210	<	PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
209	>	public void testLock()      { testLock(false); }
210	>	public void testLock_fair() { testLock(true); }
211	>	public void testLock(boolean fair) {
212	>	PublicReentrantReadWriteLock lock =
213	>	new PublicReentrantReadWriteLock(fair);
214		assertNotWriteLocked(lock);
215		lock.writeLock().lock();
216	<	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());
216	>	assertWriteLockedByMoi(lock);
217		lock.writeLock().unlock();
218		assertNotWriteLocked(lock);
219		assertEquals(0, lock.getReadLockCount());
#	Line 198 | Line 228 | public class ReentrantReadWriteLockTest
228		/**
229		* getWriteHoldCount returns number of recursive holds
230		*/
231	<	public void testGetWriteHoldCount() {
232	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
231	>	public void testGetWriteHoldCount()      { testGetWriteHoldCount(false); }
232	>	public void testGetWriteHoldCount_fair() { testGetWriteHoldCount(true); }
233	>	public void testGetWriteHoldCount(boolean fair) {
234	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
235		for (int i = 1; i <= SIZE; i++) {
236		lock.writeLock().lock();
237		assertEquals(i,lock.getWriteHoldCount());
238		}
239		for (int i = SIZE; i > 0; i--) {
240		lock.writeLock().unlock();
241	<	assertEquals(i-1,lock.getWriteHoldCount());
241	>	assertEquals(i - 1,lock.getWriteHoldCount());
242		}
243		}
244
245		/**
246	<	* WriteLock.getHoldCount returns number of recursive holds
246	>	* writelock.getHoldCount returns number of recursive holds
247		*/
248	<	public void testGetHoldCount() {
249	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
248	>	public void testGetHoldCount()      { testGetHoldCount(false); }
249	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
250	>	public void testGetHoldCount(boolean fair) {
251	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
252		for (int i = 1; i <= SIZE; i++) {
253		lock.writeLock().lock();
254		assertEquals(i,lock.writeLock().getHoldCount());
255		}
256		for (int i = SIZE; i > 0; i--) {
257		lock.writeLock().unlock();
258	<	assertEquals(i-1,lock.writeLock().getHoldCount());
258	>	assertEquals(i - 1,lock.writeLock().getHoldCount());
259		}
260		}
261
262		/**
263		* getReadHoldCount returns number of recursive holds
264		*/
265	<	public void testGetReadHoldCount() {
266	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
265	>	public void testGetReadHoldCount()      { testGetReadHoldCount(false); }
266	>	public void testGetReadHoldCount_fair() { testGetReadHoldCount(true); }
267	>	public void testGetReadHoldCount(boolean fair) {
268	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
269		for (int i = 1; i <= SIZE; i++) {
270		lock.readLock().lock();
271		assertEquals(i,lock.getReadHoldCount());
272		}
273		for (int i = SIZE; i > 0; i--) {
274		lock.readLock().unlock();
275	<	assertEquals(i-1,lock.getReadHoldCount());
275	>	assertEquals(i - 1,lock.getReadHoldCount());
276		}
277		}
278
279		/**
280		* write-unlocking an unlocked lock throws IllegalMonitorStateException
281		*/
282	<	public void testWriteUnlock_IllegalMonitorStateException() {
283	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
282	>	public void testWriteUnlock_IMSE()      { testWriteUnlock_IMSE(false); }
283	>	public void testWriteUnlock_IMSE_fair() { testWriteUnlock_IMSE(true); }
284	>	public void testWriteUnlock_IMSE(boolean fair) {
285	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
286		try {
287		lock.writeLock().unlock();
288		shouldThrow();
#	Line 254 | Line 292 | public class ReentrantReadWriteLockTest
292		/**
293		* read-unlocking an unlocked lock throws IllegalMonitorStateException
294		*/
295	<	public void testReadUnlock_IllegalMonitorStateException() {
296	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
295	>	public void testReadUnlock_IMSE()      { testReadUnlock_IMSE(false); }
296	>	public void testReadUnlock_IMSE_fair() { testReadUnlock_IMSE(true); }
297	>	public void testReadUnlock_IMSE(boolean fair) {
298	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
299		try {
300		lock.readLock().unlock();
301		shouldThrow();
#	Line 265 | Line 305 | public class ReentrantReadWriteLockTest
305		/**
306		* write-lockInterruptibly is interruptible
307		*/
308	<	public void testWriteLockInterruptibly_Interrupted() throws Exception {
309	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
308	>	public void testWriteLockInterruptibly_Interruptible()      { testWriteLockInterruptibly_Interruptible(false); }
309	>	public void testWriteLockInterruptibly_Interruptible_fair() { testWriteLockInterruptibly_Interruptible(true); }
310	>	public void testWriteLockInterruptibly_Interruptible(boolean fair) {
311	>	final PublicReentrantReadWriteLock lock =
312	>	new PublicReentrantReadWriteLock(fair);
313		lock.writeLock().lock();
314		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
315		public void realRun() throws InterruptedException {
#	Line 282 | Line 325 | public class ReentrantReadWriteLockTest
325		/**
326		* timed write-tryLock is interruptible
327		*/
328	<	public void testWriteTryLock_Interrupted() throws InterruptedException {
329	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
328	>	public void testWriteTryLock_Interruptible()      { testWriteTryLock_Interruptible(false); }
329	>	public void testWriteTryLock_Interruptible_fair() { testWriteTryLock_Interruptible(true); }
330	>	public void testWriteTryLock_Interruptible(boolean fair) {
331	>	final PublicReentrantReadWriteLock lock =
332	>	new PublicReentrantReadWriteLock(fair);
333		lock.writeLock().lock();
334		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
335		public void realRun() throws InterruptedException {
#	Line 299 | Line 345 | public class ReentrantReadWriteLockTest
345		/**
346		* read-lockInterruptibly is interruptible
347		*/
348	<	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
349	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
348	>	public void testReadLockInterruptibly_Interruptible()      { testReadLockInterruptibly_Interruptible(false); }
349	>	public void testReadLockInterruptibly_Interruptible_fair() { testReadLockInterruptibly_Interruptible(true); }
350	>	public void testReadLockInterruptibly_Interruptible(boolean fair) {
351	>	final PublicReentrantReadWriteLock lock =
352	>	new PublicReentrantReadWriteLock(fair);
353		lock.writeLock().lock();
354		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
355		public void realRun() throws InterruptedException {
#	Line 316 | Line 365 | public class ReentrantReadWriteLockTest
365		/**
366		* timed read-tryLock is interruptible
367		*/
368	<	public void testReadTryLock_Interrupted() throws InterruptedException {
369	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
368	>	public void testReadTryLock_Interruptible()      { testReadTryLock_Interruptible(false); }
369	>	public void testReadTryLock_Interruptible_fair() { testReadTryLock_Interruptible(true); }
370	>	public void testReadTryLock_Interruptible(boolean fair) {
371	>	final PublicReentrantReadWriteLock lock =
372	>	new PublicReentrantReadWriteLock(fair);
373		lock.writeLock().lock();
374		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
375		public void realRun() throws InterruptedException {
#	Line 331 | Line 383 | public class ReentrantReadWriteLockTest
383		}
384
385		/**
386	+	* write-tryLock on an unlocked lock succeeds
387	+	*/
388	+	public void testWriteTryLock()      { testWriteTryLock(false); }
389	+	public void testWriteTryLock_fair() { testWriteTryLock(true); }
390	+	public void testWriteTryLock(boolean fair) {
391	+	final PublicReentrantReadWriteLock lock =
392	+	new PublicReentrantReadWriteLock(fair);
393	+	assertTrue(lock.writeLock().tryLock());
394	+	assertWriteLockedByMoi(lock);
395	+	assertTrue(lock.writeLock().tryLock());
396	+	assertWriteLockedByMoi(lock);
397	+	lock.writeLock().unlock();
398	+	releaseWriteLock(lock);
399	+	}
400	+
401	+	/**
402		* write-tryLock fails if locked
403		*/
404	<	public void testWriteTryLockWhenLocked() throws InterruptedException {
405	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
404	>	public void testWriteTryLockWhenLocked()      { testWriteTryLockWhenLocked(false); }
405	>	public void testWriteTryLockWhenLocked_fair() { testWriteTryLockWhenLocked(true); }
406	>	public void testWriteTryLockWhenLocked(boolean fair) {
407	>	final PublicReentrantReadWriteLock lock =
408	>	new PublicReentrantReadWriteLock(fair);
409		lock.writeLock().lock();
410		Thread t = newStartedThread(new CheckedRunnable() {
411		public void realRun() {
#	Line 348 | Line 419 | public class ReentrantReadWriteLockTest
419		/**
420		* read-tryLock fails if locked
421		*/
422	<	public void testReadTryLockWhenLocked() throws InterruptedException {
423	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
422	>	public void testReadTryLockWhenLocked()      { testReadTryLockWhenLocked(false); }
423	>	public void testReadTryLockWhenLocked_fair() { testReadTryLockWhenLocked(true); }
424	>	public void testReadTryLockWhenLocked(boolean fair) {
425	>	final PublicReentrantReadWriteLock lock =
426	>	new PublicReentrantReadWriteLock(fair);
427		lock.writeLock().lock();
428		Thread t = newStartedThread(new CheckedRunnable() {
429		public void realRun() {
#	Line 363 | Line 437 | public class ReentrantReadWriteLockTest
437		/**
438		* Multiple threads can hold a read lock when not write-locked
439		*/
440	<	public void testMultipleReadLocks() throws InterruptedException {
441	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
440	>	public void testMultipleReadLocks()      { testMultipleReadLocks(false); }
441	>	public void testMultipleReadLocks_fair() { testMultipleReadLocks(true); }
442	>	public void testMultipleReadLocks(boolean fair) {
443	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
444		lock.readLock().lock();
445		Thread t = newStartedThread(new CheckedRunnable() {
446	<	public void realRun() {
446	>	public void realRun() throws InterruptedException {
447		assertTrue(lock.readLock().tryLock());
448		lock.readLock().unlock();
449	+	assertTrue(lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS));
450	+	lock.readLock().unlock();
451	+	lock.readLock().lock();
452	+	lock.readLock().unlock();
453		}});
454
455		awaitTermination(t);
#	Line 379 | Line 459 | public class ReentrantReadWriteLockTest
459		/**
460		* A writelock succeeds only after a reading thread unlocks
461		*/
462	<	public void testWriteAfterReadLock() throws InterruptedException {
463	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
462	>	public void testWriteAfterReadLock()      { testWriteAfterReadLock(false); }
463	>	public void testWriteAfterReadLock_fair() { testWriteAfterReadLock(true); }
464	>	public void testWriteAfterReadLock(boolean fair) {
465	>	final PublicReentrantReadWriteLock lock =
466	>	new PublicReentrantReadWriteLock(fair);
467		lock.readLock().lock();
385	–
468		Thread t = newStartedThread(new CheckedRunnable() {
469		public void realRun() {
470		assertEquals(1, lock.getReadLockCount());
#	Line 402 | Line 484 | public class ReentrantReadWriteLockTest
484		/**
485		* A writelock succeeds only after reading threads unlock
486		*/
487	<	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
488	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
487	>	public void testWriteAfterMultipleReadLocks()      { testWriteAfterMultipleReadLocks(false); }
488	>	public void testWriteAfterMultipleReadLocks_fair() { testWriteAfterMultipleReadLocks(true); }
489	>	public void testWriteAfterMultipleReadLocks(boolean fair) {
490	>	final PublicReentrantReadWriteLock lock =
491	>	new PublicReentrantReadWriteLock(fair);
492		lock.readLock().lock();
493		lock.readLock().lock();
494		Thread t1 = newStartedThread(new CheckedRunnable() {
#	Line 433 | Line 518 | public class ReentrantReadWriteLockTest
518
519		/**
520		* A thread that tries to acquire a fair read lock (non-reentrantly)
521	<	* will block if there is a waiting writer thread.
521	>	* will block if there is a waiting writer thread
522		*/
523	<	public void testReaderWriterReaderFairFifo() throws InterruptedException {
524	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
523	>	public void testReaderWriterReaderFairFifo() {
524	>	final PublicReentrantReadWriteLock lock =
525	>	new PublicReentrantReadWriteLock(true);
526		final AtomicBoolean t1GotLock = new AtomicBoolean(false);
527
528		lock.readLock().lock();
#	Line 471 | Line 557 | public class ReentrantReadWriteLockTest
557		/**
558		* Readlocks succeed only after a writing thread unlocks
559		*/
560	<	public void testReadAfterWriteLock() throws InterruptedException {
561	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
560	>	public void testReadAfterWriteLock()      { testReadAfterWriteLock(false); }
561	>	public void testReadAfterWriteLock_fair() { testReadAfterWriteLock(true); }
562	>	public void testReadAfterWriteLock(boolean fair) {
563	>	final PublicReentrantReadWriteLock lock =
564	>	new PublicReentrantReadWriteLock(fair);
565		lock.writeLock().lock();
566		Thread t1 = newStartedThread(new CheckedRunnable() {
567		public void realRun() {
#	Line 495 | Line 584 | public class ReentrantReadWriteLockTest
584		/**
585		* Read trylock succeeds if write locked by current thread
586		*/
587	<	public void testReadHoldingWriteLock() {
588	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
587	>	public void testReadHoldingWriteLock()      { testReadHoldingWriteLock(false); }
588	>	public void testReadHoldingWriteLock_fair() { testReadHoldingWriteLock(true); }
589	>	public void testReadHoldingWriteLock(boolean fair) {
590	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
591		lock.writeLock().lock();
592		assertTrue(lock.readLock().tryLock());
593		lock.readLock().unlock();
#	Line 504 | Line 595 | public class ReentrantReadWriteLockTest
595		}
596
597		/**
598	<	* Read lock succeeds if write locked by current thread even if
599	<	* other threads are waiting for readlock
598	>	* Read trylock succeeds (barging) even in the presence of waiting
599	>	* readers and/or writers
600		*/
601	<	public void testReadHoldingWriteLock2() throws InterruptedException {
602	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
603	<	lock.writeLock().lock();
601	>	public void testReadTryLockBarging()      { testReadTryLockBarging(false); }
602	>	public void testReadTryLockBarging_fair() { testReadTryLockBarging(true); }
603	>	public void testReadTryLockBarging(boolean fair) {
604	>	final PublicReentrantReadWriteLock lock =
605	>	new PublicReentrantReadWriteLock(fair);
606		lock.readLock().lock();
514	–	lock.readLock().unlock();
607
608		Thread t1 = newStartedThread(new CheckedRunnable() {
609		public void realRun() {
610	<	lock.readLock().lock();
611	<	lock.readLock().unlock();
520	<	}});
521	<	Thread t2 = newStartedThread(new CheckedRunnable() {
522	<	public void realRun() {
523	<	lock.readLock().lock();
524	<	lock.readLock().unlock();
610	>	lock.writeLock().lock();
611	>	lock.writeLock().unlock();
612		}});
613
614		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	–	}
536	–
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();
615
547	–	Thread t1 = newStartedThread(new CheckedRunnable() {
548	–	public void realRun() {
549	–	lock.writeLock().lock();
550	–	lock.writeLock().unlock();
551	–	}});
616		Thread t2 = newStartedThread(new CheckedRunnable() {
617		public void realRun() {
618	<	lock.writeLock().lock();
619	<	lock.writeLock().unlock();
618	>	lock.readLock().lock();
619	>	lock.readLock().unlock();
620		}});
621
622	<	waitForQueuedThread(lock, t1);
623	<	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();
622	>	if (fair)
623	>	waitForQueuedThread(lock, t2);
624
625	<	Thread t1 = newStartedThread(new CheckedRunnable() {
625	>	Thread t3 = newStartedThread(new CheckedRunnable() {
626		public void realRun() {
627	<	lock.writeLock().lock();
628	<	lock.writeLock().unlock();
582	<	}});
583	<	Thread t2 = newStartedThread(new CheckedRunnable() {
584	<	public void realRun() {
585	<	lock.writeLock().lock();
586	<	lock.writeLock().unlock();
627	>	lock.readLock().tryLock();
628	>	lock.readLock().unlock();
629		}});
630
631	<	waitForQueuedThread(lock, t1);
632	<	waitForQueuedThread(lock, t2);
633	<	assertWriteLockedBy(lock, Thread.currentThread());
634	<	assertEquals(1, lock.getWriteHoldCount());
635	<	lock.writeLock().lock();
594	<	assertWriteLockedBy(lock, Thread.currentThread());
595	<	assertEquals(2, lock.getWriteHoldCount());
596	<	lock.writeLock().unlock();
597	<	releaseWriteLock(lock);
631	>	assertTrue(lock.getReadLockCount() > 0);
632	>	awaitTermination(t3);
633	>	assertTrue(t1.isAlive());
634	>	if (fair) assertTrue(t2.isAlive());
635	>	lock.readLock().unlock();
636		awaitTermination(t1);
637		awaitTermination(t2);
638		}
639
640		/**
641	<	* 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
641	>	* Read lock succeeds if write locked by current thread even if
642		* other threads are waiting for readlock
643		*/
644	<	public void testReadHoldingWriteLockFair2() throws InterruptedException {
645	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
644	>	public void testReadHoldingWriteLock2()      { testReadHoldingWriteLock2(false); }
645	>	public void testReadHoldingWriteLock2_fair() { testReadHoldingWriteLock2(true); }
646	>	public void testReadHoldingWriteLock2(boolean fair) {
647	>	final PublicReentrantReadWriteLock lock =
648	>	new PublicReentrantReadWriteLock(fair);
649		lock.writeLock().lock();
650		lock.readLock().lock();
651		lock.readLock().unlock();
#	Line 633 | Line 663 | public class ReentrantReadWriteLockTest
663
664		waitForQueuedThread(lock, t1);
665		waitForQueuedThread(lock, t2);
666	<	assertWriteLockedBy(lock, Thread.currentThread());
666	>	assertWriteLockedByMoi(lock);
667		lock.readLock().lock();
668		lock.readLock().unlock();
669		releaseWriteLock(lock);
#	Line 642 | Line 672 | public class ReentrantReadWriteLockTest
672		}
673
674		/**
675	<	* Fair Read lock succeeds if write locked by current thread even if
675	>	* Read lock succeeds if write locked by current thread even if
676		* other threads are waiting for writelock
677		*/
678	<	public void testReadHoldingWriteLockFair3() throws InterruptedException {
679	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
678	>	public void testReadHoldingWriteLock3()      { testReadHoldingWriteLock3(false); }
679	>	public void testReadHoldingWriteLock3_fair() { testReadHoldingWriteLock3(true); }
680	>	public void testReadHoldingWriteLock3(boolean fair) {
681	>	final PublicReentrantReadWriteLock lock =
682	>	new PublicReentrantReadWriteLock(fair);
683		lock.writeLock().lock();
684		lock.readLock().lock();
685		lock.readLock().unlock();
#	Line 664 | Line 697 | public class ReentrantReadWriteLockTest
697
698		waitForQueuedThread(lock, t1);
699		waitForQueuedThread(lock, t2);
700	<	assertWriteLockedBy(lock, Thread.currentThread());
700	>	assertWriteLockedByMoi(lock);
701		lock.readLock().lock();
702		lock.readLock().unlock();
703	<	releaseWriteLock(lock);
703	>	assertWriteLockedByMoi(lock);
704	>	lock.writeLock().unlock();
705		awaitTermination(t1);
706		awaitTermination(t2);
707		}
708
709		/**
710	<	* Fair Write lock succeeds if write locked by current thread even if
710	>	* Write lock succeeds if write locked by current thread even if
711		* other threads are waiting for writelock
712		*/
713	<	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
714	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(true);
713	>	public void testWriteHoldingWriteLock4()      { testWriteHoldingWriteLock4(false); }
714	>	public void testWriteHoldingWriteLock4_fair() { testWriteHoldingWriteLock4(true); }
715	>	public void testWriteHoldingWriteLock4(boolean fair) {
716	>	final PublicReentrantReadWriteLock lock =
717	>	new PublicReentrantReadWriteLock(fair);
718	>	lock.writeLock().lock();
719		lock.writeLock().lock();
720	+	lock.writeLock().unlock();
721	+
722		Thread t1 = newStartedThread(new CheckedRunnable() {
723		public void realRun() {
724		lock.writeLock().lock();
#	Line 692 | Line 732 | public class ReentrantReadWriteLockTest
732
733		waitForQueuedThread(lock, t1);
734		waitForQueuedThread(lock, t2);
735	<	assertWriteLockedBy(lock, Thread.currentThread());
735	>	assertWriteLockedByMoi(lock);
736		assertEquals(1, lock.getWriteHoldCount());
737		lock.writeLock().lock();
738	+	assertWriteLockedByMoi(lock);
739		assertEquals(2, lock.getWriteHoldCount());
740		lock.writeLock().unlock();
741	<	lock.writeLock().lock();
741	>	assertWriteLockedByMoi(lock);
742	>	assertEquals(1, lock.getWriteHoldCount());
743		lock.writeLock().unlock();
702	–	releaseWriteLock(lock);
744		awaitTermination(t1);
745		awaitTermination(t2);
746		}
#	Line 707 | Line 748 | public class ReentrantReadWriteLockTest
748		/**
749		* Read tryLock succeeds if readlocked but not writelocked
750		*/
751	<	public void testTryLockWhenReadLocked() throws InterruptedException {
752	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
751	>	public void testTryLockWhenReadLocked()      { testTryLockWhenReadLocked(false); }
752	>	public void testTryLockWhenReadLocked_fair() { testTryLockWhenReadLocked(true); }
753	>	public void testTryLockWhenReadLocked(boolean fair) {
754	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
755		lock.readLock().lock();
756		Thread t = newStartedThread(new CheckedRunnable() {
757		public void realRun() {
#	Line 723 | Line 766 | public class ReentrantReadWriteLockTest
766		/**
767		* write tryLock fails when readlocked
768		*/
769	<	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
770	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
771	<	lock.readLock().lock();
772	<	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);
769	>	public void testWriteTryLockWhenReadLocked()      { testWriteTryLockWhenReadLocked(false); }
770	>	public void testWriteTryLockWhenReadLocked_fair() { testWriteTryLockWhenReadLocked(true); }
771	>	public void testWriteTryLockWhenReadLocked(boolean fair) {
772	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
773		lock.readLock().lock();
774		Thread t = newStartedThread(new CheckedRunnable() {
775		public void realRun() {
#	Line 769 | Line 783 | public class ReentrantReadWriteLockTest
783		/**
784		* write timed tryLock times out if locked
785		*/
786	<	public void testWriteTryLock_Timeout() throws InterruptedException {
787	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
786	>	public void testWriteTryLock_Timeout()      { testWriteTryLock_Timeout(false); }
787	>	public void testWriteTryLock_Timeout_fair() { testWriteTryLock_Timeout(true); }
788	>	public void testWriteTryLock_Timeout(boolean fair) {
789	>	final PublicReentrantReadWriteLock lock =
790	>	new PublicReentrantReadWriteLock(fair);
791		lock.writeLock().lock();
792		Thread t = newStartedThread(new CheckedRunnable() {
793		public void realRun() throws InterruptedException {
#	Line 781 | Line 798 | public class ReentrantReadWriteLockTest
798		}});
799
800		awaitTermination(t);
801	<	assertTrue(lock.writeLock().isHeldByCurrentThread());
785	<	lock.writeLock().unlock();
801	>	releaseWriteLock(lock);
802		}
803
804		/**
805		* read timed tryLock times out if write-locked
806		*/
807	<	public void testReadTryLock_Timeout() throws InterruptedException {
808	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
807	>	public void testReadTryLock_Timeout()      { testReadTryLock_Timeout(false); }
808	>	public void testReadTryLock_Timeout_fair() { testReadTryLock_Timeout(true); }
809	>	public void testReadTryLock_Timeout(boolean fair) {
810	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
811		lock.writeLock().lock();
812		Thread t = newStartedThread(new CheckedRunnable() {
813		public void realRun() throws InterruptedException {
#	Line 805 | Line 823 | public class ReentrantReadWriteLockTest
823		}
824
825		/**
826	<	* write lockInterruptibly succeeds if lock free else is interruptible
826	>	* write lockInterruptibly succeeds if unlocked, else is interruptible
827		*/
828	<	public void testWriteLockInterruptibly() throws InterruptedException {
829	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
830	<	lock.writeLock().lockInterruptibly();
828	>	public void testWriteLockInterruptibly()      { testWriteLockInterruptibly(false); }
829	>	public void testWriteLockInterruptibly_fair() { testWriteLockInterruptibly(true); }
830	>	public void testWriteLockInterruptibly(boolean fair) {
831	>	final PublicReentrantReadWriteLock lock =
832	>	new PublicReentrantReadWriteLock(fair);
833	>	try {
834	>	lock.writeLock().lockInterruptibly();
835	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
836		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
837		public void realRun() throws InterruptedException {
838		lock.writeLock().lockInterruptibly();
#	Line 817 | Line 840 | public class ReentrantReadWriteLockTest
840
841		waitForQueuedThread(lock, t);
842		t.interrupt();
843	+	assertTrue(lock.writeLock().isHeldByCurrentThread());
844		awaitTermination(t);
845		releaseWriteLock(lock);
846		}
#	Line 824 | Line 848 | public class ReentrantReadWriteLockTest
848		/**
849		* read lockInterruptibly succeeds if lock free else is interruptible
850		*/
851	<	public void testReadLockInterruptibly() throws InterruptedException {
852	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
853	<	lock.writeLock().lockInterruptibly();
851	>	public void testReadLockInterruptibly()      { testReadLockInterruptibly(false); }
852	>	public void testReadLockInterruptibly_fair() { testReadLockInterruptibly(true); }
853	>	public void testReadLockInterruptibly(boolean fair) {
854	>	final PublicReentrantReadWriteLock lock =
855	>	new PublicReentrantReadWriteLock(fair);
856	>	try {
857	>	lock.readLock().lockInterruptibly();
858	>	lock.readLock().unlock();
859	>	lock.writeLock().lockInterruptibly();
860	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
861		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
862		public void realRun() throws InterruptedException {
863		lock.readLock().lockInterruptibly();
#	Line 841 | Line 872 | public class ReentrantReadWriteLockTest
872		/**
873		* Calling await without holding lock throws IllegalMonitorStateException
874		*/
875	<	public void testAwait_IllegalMonitor() throws InterruptedException {
876	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
877	<	final Condition c = lock.writeLock().newCondition();
878	<	try {
879	<	c.await();
880	<	shouldThrow();
881	<	} catch (IllegalMonitorStateException success) {}
882	<	try {
883	<	c.await(LONG_DELAY_MS, MILLISECONDS);
884	<	shouldThrow();
885	<	} catch (IllegalMonitorStateException success) {}
886	<	try {
887	<	c.awaitNanos(100);
888	<	shouldThrow();
889	<	} catch (IllegalMonitorStateException success) {}
890	<	try {
860	<	c.awaitUninterruptibly();
861	<	shouldThrow();
862	<	} catch (IllegalMonitorStateException success) {}
875	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
876	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
877	>	public void testAwait_IMSE(boolean fair) {
878	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
879	>	final Condition c = lock.writeLock().newCondition();
880	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
881	>	long startTime = System.nanoTime();
882	>	try {
883	>	await(c, awaitMethod);
884	>	shouldThrow();
885	>	} catch (IllegalMonitorStateException success) {
886	>	} catch (InterruptedException fail) {
887	>	threadUnexpectedException(fail);
888	>	}
889	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
890	>	}
891		}
892
893		/**
894		* Calling signal without holding lock throws IllegalMonitorStateException
895		*/
896	<	public void testSignal_IllegalMonitor() {
897	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
896	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
897	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
898	>	public void testSignal_IMSE(boolean fair) {
899	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
900		final Condition c = lock.writeLock().newCondition();
901		try {
902		c.signal();
#	Line 877 | Line 907 | public class ReentrantReadWriteLockTest
907		/**
908		* Calling signalAll without holding lock throws IllegalMonitorStateException
909		*/
910	<	public void testSignalAll_IllegalMonitor() {
911	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
910	>	public void testSignalAll_IMSE()      { testSignalAll_IMSE(false); }
911	>	public void testSignalAll_IMSE_fair() { testSignalAll_IMSE(true); }
912	>	public void testSignalAll_IMSE(boolean fair) {
913	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
914		final Condition c = lock.writeLock().newCondition();
915		try {
916		c.signalAll();
#	Line 889 | Line 921 | public class ReentrantReadWriteLockTest
921		/**
922		* awaitNanos without a signal times out
923		*/
924	<	public void testAwaitNanos_Timeout() throws InterruptedException {
925	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
926	<	final Condition c = lock.writeLock().newCondition();
927	<	lock.writeLock().lock();
928	<	long startTime = System.nanoTime();
929	<	long timeoutMillis = 10;
930	<	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
931	<	long nanosRemaining = c.awaitNanos(timeoutNanos);
932	<	assertTrue(nanosRemaining <= 0);
933	<	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
934	<	lock.writeLock().unlock();
924	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
925	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
926	>	public void testAwaitNanos_Timeout(boolean fair) {
927	>	try {
928	>	final ReentrantReadWriteLock lock =
929	>	new ReentrantReadWriteLock(fair);
930	>	final Condition c = lock.writeLock().newCondition();
931	>	lock.writeLock().lock();
932	>	long startTime = System.nanoTime();
933	>	long timeoutMillis = 10;
934	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
935	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
936	>	assertTrue(nanosRemaining <= 0);
937	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
938	>	lock.writeLock().unlock();
939	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
940		}
941
942		/**
943		* timed await without a signal times out
944		*/
945	<	public void testAwait_Timeout() throws InterruptedException {
946	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
947	<	final Condition c = lock.writeLock().newCondition();
948	<	lock.writeLock().lock();
949	<	long startTime = System.nanoTime();
950	<	long timeoutMillis = 10;
951	<	assertFalse(c.await(timeoutMillis, MILLISECONDS));
952	<	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
953	<	lock.writeLock().unlock();
945	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
946	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
947	>	public void testAwait_Timeout(boolean fair) {
948	>	try {
949	>	final ReentrantReadWriteLock lock =
950	>	new ReentrantReadWriteLock(fair);
951	>	final Condition c = lock.writeLock().newCondition();
952	>	lock.writeLock().lock();
953	>	long startTime = System.nanoTime();
954	>	long timeoutMillis = 10;
955	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
956	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
957	>	lock.writeLock().unlock();
958	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
959		}
960
961		/**
962		* awaitUntil without a signal times out
963		*/
964	<	public void testAwaitUntil_Timeout() throws InterruptedException {
965	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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();
964	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
965	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
966	>	public void testAwaitUntil_Timeout(boolean fair) {
967	>	try {
968	>	final ReentrantReadWriteLock lock =
969	>	new ReentrantReadWriteLock(fair);
970	>	final Condition c = lock.writeLock().newCondition();
971	>	lock.writeLock().lock();
972	>	long startTime = System.nanoTime();
973	>	assertFalse(c.awaitUntil(delayedDate(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 PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
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 946 | 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();
#	Line 957 | Line 1005 | public class ReentrantReadWriteLockTest
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	<	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();
978	<	t.interrupt();
979	<	long timeoutMillis = 10;
980	<	assertThreadJoinTimesOut(t, timeoutMillis);
981	<	lock.writeLock().lock();
982	<	c.signal();
983	<	lock.writeLock().unlock();
984	<	awaitTermination(t);
985	<	}
986	<
987	<	/**
988	<	* await is interruptible
989	<	*/
990	<	public void testAwait_Interrupt() throws InterruptedException {
991	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
992	<	final Condition c = lock.writeLock().newCondition();
993	<	final CountDownLatch locked = new CountDownLatch(1);
994	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
995	<	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 {
1001	<	c.await();
1002	<	} finally {
1003	<	assertWriteLockedBy(lock, Thread.currentThread());
1004	<	assertHasNoWaiters(lock, c);
1005	<	lock.writeLock().unlock();
1006	<	assertFalse(Thread.interrupted());
1007	<	}
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);
1014	<	assertNotWriteLocked(lock);
1015	<	}
1038	>	await(pleaseInterrupt);
1039	>	lock.writeLock().lock();
1040	>	lock.writeLock().unlock();
1041	>	t2.interrupt();
1042
1043	<	/**
1044	<	* awaitNanos is interruptible
1019	<	*/
1020	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
1021	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1022	<	final Condition c = lock.writeLock().newCondition();
1023	<	final CountDownLatch locked = new CountDownLatch(1);
1024	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1025	<	public void realRun() throws InterruptedException {
1026	<	lock.writeLock().lock();
1027	<	assertWriteLockedBy(lock, Thread.currentThread());
1028	<	assertHasNoWaiters(lock, c);
1029	<	locked.countDown();
1030	<	try {
1031	<	c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
1032	<	} finally {
1033	<	assertWriteLockedBy(lock, Thread.currentThread());
1034	<	assertHasNoWaiters(lock, c);
1035	<	lock.writeLock().unlock();
1036	<	assertFalse(Thread.interrupted());
1037	<	}
1038	<	}});
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();
1060	–	java.util.Date d = new java.util.Date();
1076		try {
1077	<	c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS));
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 1078 | 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 {
1096	<	writeLock.lock();
1097	<	locked.countDown();
1098	<	c.await();
1099	<	writeLock.unlock();
1100	<	}});
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 1110 | 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 1126 | 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 1136 | 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 1157 | Line 1180 | public class ReentrantReadWriteLockTest
1180		/**
1181		* await after multiple reentrant locking preserves lock count
1182		*/
1183	<	public void testAwaitLockCount() throws InterruptedException {
1184	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
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	<	assertWriteLockedBy(lock, Thread.currentThread());
1193	>	assertWriteLockedByMoi(lock);
1194		assertEquals(1, lock.writeLock().getHoldCount());
1195		locked.countDown();
1196		c.await();
1197	<	assertWriteLockedBy(lock, Thread.currentThread());
1197	>	assertWriteLockedByMoi(lock);
1198		assertEquals(1, lock.writeLock().getHoldCount());
1199		lock.writeLock().unlock();
1200		}});
#	Line 1177 | Line 1203 | public class ReentrantReadWriteLockTest
1203		public void realRun() throws InterruptedException {
1204		lock.writeLock().lock();
1205		lock.writeLock().lock();
1206	<	assertWriteLockedBy(lock, Thread.currentThread());
1206	>	assertWriteLockedByMoi(lock);
1207		assertEquals(2, lock.writeLock().getHoldCount());
1208		locked.countDown();
1209		c.await();
1210	<	assertWriteLockedBy(lock, Thread.currentThread());
1210	>	assertWriteLockedByMoi(lock);
1211		assertEquals(2, lock.writeLock().getHoldCount());
1212		lock.writeLock().unlock();
1213		lock.writeLock().unlock();
1214		}});
1215
1216	<	locked.await();
1216	>	await(locked);
1217		lock.writeLock().lock();
1218		assertHasWaiters(lock, c, t1, t2);
1219		c.signalAll();
#	Line 1200 | Line 1226 | public class ReentrantReadWriteLockTest
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());
#	Line 1244 | Line 1280 | public class ReentrantReadWriteLockTest
1280		/**
1281		* hasQueuedThread(null) throws NPE
1282		*/
1283	<	public void testHasQueuedThreadNPE() {
1284	<	final ReentrantReadWriteLock lock = 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		lock.hasQueuedThread(null);
1289		shouldThrow();
#	Line 1253 | Line 1291 | public class ReentrantReadWriteLockTest
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));
#	Line 1283 | 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());
#	Line 1306 | 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());
#	Line 1335 | 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 1346 | 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 1357 | 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 1368 | Line 1421 | public class ReentrantReadWriteLockTest
1421		/**
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 1381 | Line 1436 | public class ReentrantReadWriteLockTest
1436		/**
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 1393 | Line 1450 | public class ReentrantReadWriteLockTest
1450		/**
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 1406 | Line 1465 | public class ReentrantReadWriteLockTest
1465		/**
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 1418 | Line 1479 | public class ReentrantReadWriteLockTest
1479		/**
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 1431 | Line 1496 | public class ReentrantReadWriteLockTest
1496		/**
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 1443 | 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() {
#	Line 1459 | Line 1530 | public class ReentrantReadWriteLockTest
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));
#	Line 1474 | 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 1487 | 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 1501 | 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 1529 | 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 1551 | 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);
1568	<	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();
1581	<	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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