[ViewVC] Diff of: jsr166/jsr166/src/test/tck/ReentrantReadWriteLockTest.java

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.45 by jsr166, Sun May 1 23:49:41 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.locks.*;
11	–	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 32 \| Line 40 \| public class ReentrantReadWriteLockTest
40		}
41		}
42
35	–
43		/**
44		* A runnable calling lockInterruptibly that expects to be
45		* interrupted
#	Line 50 \| Line 57 \| public class ReentrantReadWriteLockTest
57		*/
58		static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock {
59		PublicReentrantReadWriteLock() { super(); }
60	+	PublicReentrantReadWriteLock(boolean fair) { super(fair); }
61	+	public Thread getOwner() {
62	+	return super.getOwner();
63	+	}
64		public Collection<Thread> getQueuedThreads() {
65		return super.getQueuedThreads();
66		}
#	Line 59 \| Line 70 \| public class ReentrantReadWriteLockTest
70		}
71
72		/**
73	<	* Constructor sets given fairness, and is in unlocked state
73	>	* Releases write lock, checking that it had a hold count of 1.
74		*/
75	<	public void testConstructor() {
76	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
77	<	assertFalse(rl.isFair());
78	<	assertFalse(rl.isWriteLocked());
79	<	assertEquals(0, rl.getReadLockCount());
80	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
70	<	assertTrue(r2.isFair());
71	<	assertFalse(r2.isWriteLocked());
72	<	assertEquals(0, r2.getReadLockCount());
73	<	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
74	<	assertFalse(r3.isFair());
75	<	assertFalse(r3.isWriteLocked());
76	<	assertEquals(0, r3.getReadLockCount());
75	>	void releaseWriteLock(PublicReentrantReadWriteLock lock) {
76	>	ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock();
77	>	assertWriteLockedByMoi(lock);
78	>	assertEquals(1, lock.getWriteHoldCount());
79	>	writeLock.unlock();
80	>	assertNotWriteLocked(lock);
81		}
82
83		/**
84	<	* write-locking and read-locking an unlocked lock succeed
84	>	* Spin-waits until lock.hasQueuedThread(t) becomes true.
85	>	*/
86	>	void waitForQueuedThread(PublicReentrantReadWriteLock lock, Thread t) {
87	>	long startTime = System.nanoTime();
88	>	while (!lock.hasQueuedThread(t)) {
89	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
90	>	throw new AssertionFailedError("timed out");
91	>	Thread.yield();
92	>	}
93	>	assertTrue(t.isAlive());
94	>	assertNotSame(t, lock.getOwner());
95	>	}
96	>
97	>	/**
98	>	* Checks that lock is not write-locked.
99	>	*/
100	>	void assertNotWriteLocked(PublicReentrantReadWriteLock lock) {
101	>	assertFalse(lock.isWriteLocked());
102	>	assertFalse(lock.isWriteLockedByCurrentThread());
103	>	assertFalse(lock.writeLock().isHeldByCurrentThread());
104	>	assertEquals(0, lock.getWriteHoldCount());
105	>	assertEquals(0, lock.writeLock().getHoldCount());
106	>	assertNull(lock.getOwner());
107	>	}
108	>
109	>	/**
110	>	* Checks that lock is write-locked by the given thread.
111	>	*/
112	>	void assertWriteLockedBy(PublicReentrantReadWriteLock lock, Thread t) {
113	>	assertTrue(lock.isWriteLocked());
114	>	assertSame(t, lock.getOwner());
115	>	assertEquals(t == Thread.currentThread(),
116	>	lock.isWriteLockedByCurrentThread());
117	>	assertEquals(t == Thread.currentThread(),
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) {
137	>	assertHasWaiters(lock, c, new Thread[] {});
138	>	}
139	>
140	>	/**
141	>	* Checks that condition c has exactly the given waiter threads.
142	>	*/
143	>	void assertHasWaiters(PublicReentrantReadWriteLock lock, Condition c,
144	>	Thread... threads) {
145	>	lock.writeLock().lock();
146	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
147	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
148	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
149	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
150	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
151	>	new HashSet<Thread>(Arrays.asList(threads)));
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	<	public void testLock() {
161	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
162	<	rl.writeLock().lock();
163	<	assertTrue(rl.isWriteLocked());
164	<	assertTrue(rl.isWriteLockedByCurrentThread());
165	<	assertTrue(rl.writeLock().isHeldByCurrentThread());
166	<	assertEquals(0, rl.getReadLockCount());
167	<	rl.writeLock().unlock();
168	<	assertFalse(rl.isWriteLocked());
169	<	assertFalse(rl.isWriteLockedByCurrentThread());
170	<	assertFalse(rl.writeLock().isHeldByCurrentThread());
171	<	assertEquals(0, rl.getReadLockCount());
172	<	rl.readLock().lock();
173	<	assertFalse(rl.isWriteLocked());
174	<	assertFalse(rl.isWriteLockedByCurrentThread());
175	<	assertEquals(1, rl.getReadLockCount());
176	<	rl.readLock().unlock();
177	<	assertFalse(rl.isWriteLocked());
178	<	assertFalse(rl.isWriteLockedByCurrentThread());
179	<	assertEquals(0, rl.getReadLockCount());
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	+	*/
187	+	public void testConstructor() {
188	+	PublicReentrantReadWriteLock lock;
189	+
190	+	lock = new PublicReentrantReadWriteLock();
191	+	assertFalse(lock.isFair());
192	+	assertNotWriteLocked(lock);
193	+	assertEquals(0, lock.getReadLockCount());
194	+
195	+	lock = new PublicReentrantReadWriteLock(true);
196	+	assertTrue(lock.isFair());
197	+	assertNotWriteLocked(lock);
198	+	assertEquals(0, lock.getReadLockCount());
199	+
200	+	lock = new PublicReentrantReadWriteLock(false);
201	+	assertFalse(lock.isFair());
202	+	assertNotWriteLocked(lock);
203	+	assertEquals(0, lock.getReadLockCount());
204	+	}
205
206		/**
207	<	* locking an unlocked fair lock succeeds
208	<	*/
209	<	public void testFairLock() {
210	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
211	<	rl.writeLock().lock();
212	<	assertTrue(rl.isWriteLocked());
213	<	assertTrue(rl.isWriteLockedByCurrentThread());
214	<	assertTrue(rl.writeLock().isHeldByCurrentThread());
215	<	assertEquals(0, rl.getReadLockCount());
216	<	rl.writeLock().unlock();
217	<	assertFalse(rl.isWriteLocked());
218	<	assertFalse(rl.isWriteLockedByCurrentThread());
219	<	assertFalse(rl.writeLock().isHeldByCurrentThread());
220	<	assertEquals(0, rl.getReadLockCount());
221	<	rl.readLock().lock();
222	<	assertFalse(rl.isWriteLocked());
223	<	assertFalse(rl.isWriteLockedByCurrentThread());
224	<	assertEquals(1, rl.getReadLockCount());
225	<	rl.readLock().unlock();
125	<	assertFalse(rl.isWriteLocked());
126	<	assertFalse(rl.isWriteLockedByCurrentThread());
127	<	assertEquals(0, rl.getReadLockCount());
207	>	* write-locking and read-locking an unlocked lock succeed
208	>	*/
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	>	assertWriteLockedByMoi(lock);
217	>	lock.writeLock().unlock();
218	>	assertNotWriteLocked(lock);
219	>	assertEquals(0, lock.getReadLockCount());
220	>	lock.readLock().lock();
221	>	assertNotWriteLocked(lock);
222	>	assertEquals(1, lock.getReadLockCount());
223	>	lock.readLock().unlock();
224	>	assertNotWriteLocked(lock);
225	>	assertEquals(0, lock.getReadLockCount());
226		}
227
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
175	–
279		/**
280		* write-unlocking an unlocked lock throws IllegalMonitorStateException
281		*/
282	<	public void testUnlock_IllegalMonitorStateException() {
283	<	ReentrantReadWriteLock rl = 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	<	rl.writeLock().unlock();
287	>	lock.writeLock().unlock();
288		shouldThrow();
289		} catch (IllegalMonitorStateException success) {}
290		}
291
292	+	/**
293	+	* read-unlocking an unlocked lock throws IllegalMonitorStateException
294	+	*/
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();
302	+	} catch (IllegalMonitorStateException success) {}
303	+	}
304
305		/**
306		* write-lockInterruptibly is interruptible
307		*/
308	<	public void testWriteLockInterruptibly_Interrupted() throws Exception {
309	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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 {
316		lock.writeLock().lockInterruptibly();
197	–	lock.writeLock().unlock();
198	–	lock.writeLock().lockInterruptibly();
199	–	lock.writeLock().unlock();
317		}});
318
319	<	Thread.sleep(SHORT_DELAY_MS);
319	>	waitForQueuedThread(lock, t);
320		t.interrupt();
321	<	Thread.sleep(SHORT_DELAY_MS);
322	<	lock.writeLock().unlock();
206	<	t.join();
321	>	awaitTermination(t);
322	>	releaseWriteLock(lock);
323		}
324
325		/**
326		* timed write-tryLock is interruptible
327		*/
328	<	public void testWriteTryLock_Interrupted() throws InterruptedException {
329	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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 {
336	<	lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS);
336	>	lock.writeLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
337		}});
338
339	<	Thread.sleep(SHORT_DELAY_MS);
339	>	waitForQueuedThread(lock, t);
340		t.interrupt();
341	<	lock.writeLock().unlock();
342	<	t.join();
341	>	awaitTermination(t);
342	>	releaseWriteLock(lock);
343		}
344
345		/**
346		* read-lockInterruptibly is interruptible
347		*/
348	<	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
349	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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 {
356		lock.readLock().lockInterruptibly();
357		}});
358
359	<	Thread.sleep(SHORT_DELAY_MS);
359	>	waitForQueuedThread(lock, t);
360		t.interrupt();
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	lock.writeLock().unlock();
241	<	t.join();
361	>	awaitTermination(t);
362	>	releaseWriteLock(lock);
363		}
364
365		/**
366		* timed read-tryLock is interruptible
367		*/
368	<	public void testReadTryLock_Interrupted() throws InterruptedException {
369	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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 {
376	<	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
376	>	lock.readLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
377		}});
378
379	<	Thread.sleep(SHORT_DELAY_MS);
379	>	waitForQueuedThread(lock, t);
380		t.interrupt();
381	<	t.join();
381	>	awaitTermination(t);
382	>	releaseWriteLock(lock);
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 ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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() {
412		assertFalse(lock.writeLock().tryLock());
413		}});
414
415	<	t.join();
416	<	lock.writeLock().unlock();
415	>	awaitTermination(t);
416	>	releaseWriteLock(lock);
417		}
418
419		/**
420		* read-tryLock fails if locked
421		*/
422	<	public void testReadTryLockWhenLocked() throws InterruptedException {
423	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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() {
430		assertFalse(lock.readLock().tryLock());
431		}});
432
433	<	t.join();
434	<	lock.writeLock().unlock();
433	>	awaitTermination(t);
434	>	releaseWriteLock(lock);
435		}
436
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	<	t.join();
455	>	awaitTermination(t);
456	>	lock.readLock().unlock();
457	>	}
458	>
459	>	/**
460	>	* A writelock succeeds only after a reading thread unlocks
461	>	*/
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();
468	>	Thread t = newStartedThread(new CheckedRunnable() {
469	>	public void realRun() {
470	>	assertEquals(1, lock.getReadLockCount());
471	>	lock.writeLock().lock();
472	>	assertEquals(0, lock.getReadLockCount());
473	>	lock.writeLock().unlock();
474	>	}});
475	>	waitForQueuedThread(lock, t);
476	>	assertNotWriteLocked(lock);
477	>	assertEquals(1, lock.getReadLockCount());
478		lock.readLock().unlock();
479	+	assertEquals(0, lock.getReadLockCount());
480	+	awaitTermination(t);
481	+	assertNotWriteLocked(lock);
482		}
483
484		/**
485	<	* A writelock succeeds after reading threads unlock
485	>	* A writelock succeeds only after reading threads unlock
486		*/
487	<	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
488	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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() {
495		public void realRun() {
496		lock.readLock().lock();
497	+	assertEquals(3, lock.getReadLockCount());
498		lock.readLock().unlock();
499		}});
500	+	awaitTermination(t1);
501	+
502		Thread t2 = newStartedThread(new CheckedRunnable() {
503		public void realRun() {
504	+	assertEquals(2, lock.getReadLockCount());
505		lock.writeLock().lock();
506	+	assertEquals(0, lock.getReadLockCount());
507		lock.writeLock().unlock();
508		}});
509	<
510	<	Thread.sleep(SHORT_DELAY_MS);
509	>	waitForQueuedThread(lock, t2);
510	>	assertNotWriteLocked(lock);
511	>	assertEquals(2, lock.getReadLockCount());
512	>	lock.readLock().unlock();
513		lock.readLock().unlock();
514	<	t1.join(MEDIUM_DELAY_MS);
515	<	t2.join(MEDIUM_DELAY_MS);
516	<	assertTrue(!t1.isAlive());
329	<	assertTrue(!t2.isAlive());
514	>	assertEquals(0, lock.getReadLockCount());
515	>	awaitTermination(t2);
516	>	assertNotWriteLocked(lock);
517		}
518
519		/**
520	<	* Readlocks succeed after a writing thread unlocks
520	>	* A thread that tries to acquire a fair read lock (non-reentrantly)
521	>	* will block if there is a waiting writer thread
522		*/
523	<	public void testReadAfterWriteLock() throws InterruptedException {
524	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
525	<	lock.writeLock().lock();
523	>	public void testReaderWriterReaderFairFifo() {
524	>	final PublicReentrantReadWriteLock lock =
525	>	new PublicReentrantReadWriteLock(true);
526	>	final AtomicBoolean t1GotLock = new AtomicBoolean(false);
527	>
528	>	lock.readLock().lock();
529		Thread t1 = newStartedThread(new CheckedRunnable() {
530		public void realRun() {
531	<	lock.readLock().lock();
532	<	lock.readLock().unlock();
531	>	assertEquals(1, lock.getReadLockCount());
532	>	lock.writeLock().lock();
533	>	assertEquals(0, lock.getReadLockCount());
534	>	t1GotLock.set(true);
535	>	lock.writeLock().unlock();
536		}});
537	+	waitForQueuedThread(lock, t1);
538	+
539		Thread t2 = newStartedThread(new CheckedRunnable() {
540		public void realRun() {
541	+	assertEquals(1, lock.getReadLockCount());
542		lock.readLock().lock();
543	+	assertEquals(1, lock.getReadLockCount());
544	+	assertTrue(t1GotLock.get());
545		lock.readLock().unlock();
546		}});
547	<
548	<	Thread.sleep(SHORT_DELAY_MS);
549	<	lock.writeLock().unlock();
550	<	t1.join(MEDIUM_DELAY_MS);
352	<	t2.join(MEDIUM_DELAY_MS);
353	<	assertTrue(!t1.isAlive());
354	<	assertTrue(!t2.isAlive());
355	<	}
356	<
357	<	/**
358	<	* Read trylock succeeds if write locked by current thread
359	<	*/
360	<	public void testReadHoldingWriteLock() {
361	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
362	<	lock.writeLock().lock();
363	<	assertTrue(lock.readLock().tryLock());
547	>	waitForQueuedThread(lock, t2);
548	>	assertTrue(t1.isAlive());
549	>	assertNotWriteLocked(lock);
550	>	assertEquals(1, lock.getReadLockCount());
551		lock.readLock().unlock();
552	<	lock.writeLock().unlock();
552	>	awaitTermination(t1);
553	>	awaitTermination(t2);
554	>	assertNotWriteLocked(lock);
555		}
556
557		/**
558	<	* Read lock succeeds if write locked by current thread even if
370	<	* other threads are waiting for readlock
558	>	* Readlocks succeed only after a writing thread unlocks
559		*/
560	<	public void testReadHoldingWriteLock2() throws InterruptedException {
561	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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 383 \| Line 574 \| public class ReentrantReadWriteLockTest
574		lock.readLock().unlock();
575		}});
576
577	<	lock.readLock().lock();
578	<	lock.readLock().unlock();
579	<	Thread.sleep(SHORT_DELAY_MS);
580	<	lock.readLock().lock();
581	<	lock.readLock().unlock();
391	<	lock.writeLock().unlock();
392	<	t1.join(MEDIUM_DELAY_MS);
393	<	t2.join(MEDIUM_DELAY_MS);
394	<	assertTrue(!t1.isAlive());
395	<	assertTrue(!t2.isAlive());
577	>	waitForQueuedThread(lock, t1);
578	>	waitForQueuedThread(lock, t2);
579	>	releaseWriteLock(lock);
580	>	awaitTermination(t1);
581	>	awaitTermination(t2);
582		}
583
584		/**
585	<	* Read lock succeeds if write locked by current thread even if
400	<	* other threads are waiting for writelock
585	>	* Read trylock succeeds if write locked by current thread
586		*/
587	<	public void testReadHoldingWriteLock3() throws InterruptedException {
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	<	Thread t1 = newStartedThread(new CheckedRunnable() {
406	<	public void realRun() {
407	<	lock.writeLock().lock();
408	<	lock.writeLock().unlock();
409	<	}});
410	<	Thread t2 = newStartedThread(new CheckedRunnable() {
411	<	public void realRun() {
412	<	lock.writeLock().lock();
413	<	lock.writeLock().unlock();
414	<	}});
415	<
416	<	lock.readLock().lock();
417	<	lock.readLock().unlock();
418	<	Thread.sleep(SHORT_DELAY_MS);
419	<	lock.readLock().lock();
592	>	assertTrue(lock.readLock().tryLock());
593		lock.readLock().unlock();
594		lock.writeLock().unlock();
422	–	t1.join(MEDIUM_DELAY_MS);
423	–	t2.join(MEDIUM_DELAY_MS);
424	–	assertTrue(!t1.isAlive());
425	–	assertTrue(!t2.isAlive());
595		}
596
428	–
597		/**
598	<	* Write lock succeeds if write locked by current thread even if
599	<	* other threads are waiting for writelock
598	>	* Read trylock succeeds (barging) even in the presence of waiting
599	>	* readers and/or writers
600		*/
601	<	public void testWriteHoldingWriteLock4() throws InterruptedException {
602	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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();
607	>
608		Thread t1 = newStartedThread(new CheckedRunnable() {
609		public void realRun() {
610		lock.writeLock().lock();
611		lock.writeLock().unlock();
612		}});
613	+
614	+	waitForQueuedThread(lock, t1);
615	+
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	<	lock.writeLock().lock();
623	<	lock.writeLock().unlock();
449	<	Thread.sleep(SHORT_DELAY_MS);
450	<	lock.writeLock().lock();
451	<	lock.writeLock().unlock();
452	<	lock.writeLock().unlock();
453	<	t1.join(MEDIUM_DELAY_MS);
454	<	t2.join(MEDIUM_DELAY_MS);
455	<	assertTrue(!t1.isAlive());
456	<	assertTrue(!t2.isAlive());
457	<	}
622	>	if (fair)
623	>	waitForQueuedThread(lock, t2);
624
625	+	Thread t3 = newStartedThread(new CheckedRunnable() {
626	+	public void realRun() {
627	+	lock.readLock().tryLock();
628	+	lock.readLock().unlock();
629	+	}});
630
631	<	/**
632	<	* Fair Read trylock succeeds if write locked by current thread
633	<	*/
634	<	public void testReadHoldingWriteLockFair() {
464	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
465	<	lock.writeLock().lock();
466	<	assertTrue(lock.readLock().tryLock());
631	>	assertTrue(lock.getReadLockCount() > 0);
632	>	awaitTermination(t3);
633	>	assertTrue(t1.isAlive());
634	>	if (fair) assertTrue(t2.isAlive());
635		lock.readLock().unlock();
636	<	lock.writeLock().unlock();
636	>	awaitTermination(t1);
637	>	awaitTermination(t2);
638		}
639
640		/**
641	<	* 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 ReentrantReadWriteLock lock = new ReentrantReadWriteLock(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();
652	+
653		Thread t1 = newStartedThread(new CheckedRunnable() {
654		public void realRun() {
655		lock.readLock().lock();
#	Line 486 \| Line 661 \| public class ReentrantReadWriteLockTest
661		lock.readLock().unlock();
662		}});
663
664	+	waitForQueuedThread(lock, t1);
665	+	waitForQueuedThread(lock, t2);
666	+	assertWriteLockedByMoi(lock);
667		lock.readLock().lock();
668		lock.readLock().unlock();
669	<	Thread.sleep(SHORT_DELAY_MS);
670	<	lock.readLock().lock();
671	<	lock.readLock().unlock();
494	<	lock.writeLock().unlock();
495	<	t1.join(MEDIUM_DELAY_MS);
496	<	t2.join(MEDIUM_DELAY_MS);
497	<	assertTrue(!t1.isAlive());
498	<	assertTrue(!t2.isAlive());
669	>	releaseWriteLock(lock);
670	>	awaitTermination(t1);
671	>	awaitTermination(t2);
672		}
673
501	–
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 ReentrantReadWriteLock lock = new ReentrantReadWriteLock(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();
686	+
687		Thread t1 = newStartedThread(new CheckedRunnable() {
688		public void realRun() {
689		lock.writeLock().lock();
#	Line 517 \| Line 695 \| public class ReentrantReadWriteLockTest
695		lock.writeLock().unlock();
696		}});
697
698	+	waitForQueuedThread(lock, t1);
699	+	waitForQueuedThread(lock, t2);
700	+	assertWriteLockedByMoi(lock);
701		lock.readLock().lock();
702		lock.readLock().unlock();
703	<	Thread.sleep(SHORT_DELAY_MS);
523	<	lock.readLock().lock();
524	<	lock.readLock().unlock();
703	>	assertWriteLockedByMoi(lock);
704		lock.writeLock().unlock();
705	<	t1.join(MEDIUM_DELAY_MS);
706	<	t2.join(MEDIUM_DELAY_MS);
528	<	assertTrue(!t1.isAlive());
529	<	assertTrue(!t2.isAlive());
705	>	awaitTermination(t1);
706	>	awaitTermination(t2);
707		}
708
532	–
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 ReentrantReadWriteLock lock = new ReentrantReadWriteLock(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 548 \| Line 730 \| public class ReentrantReadWriteLockTest
730		lock.writeLock().unlock();
731		}});
732
733	<	Thread.sleep(SHORT_DELAY_MS);
734	<	assertTrue(lock.isWriteLockedByCurrentThread());
733	>	waitForQueuedThread(lock, t1);
734	>	waitForQueuedThread(lock, t2);
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();
742	<	lock.writeLock().unlock();
741	>	assertWriteLockedByMoi(lock);
742	>	assertEquals(1, lock.getWriteHoldCount());
743		lock.writeLock().unlock();
744	<	t1.join(MEDIUM_DELAY_MS);
745	<	t2.join(MEDIUM_DELAY_MS);
562	<	assertTrue(!t1.isAlive());
563	<	assertTrue(!t2.isAlive());
744	>	awaitTermination(t1);
745	>	awaitTermination(t2);
746		}
747
566	–
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 576 \| Line 759 \| public class ReentrantReadWriteLockTest
759		lock.readLock().unlock();
760		}});
761
762	<	t.join();
762	>	awaitTermination(t);
763		lock.readLock().unlock();
764		}
765
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() {
590	<	public void realRun() {
591	<	assertFalse(lock.writeLock().tryLock());
592	<	}});
593	<
594	<	t.join();
595	<	lock.readLock().unlock();
596	<	}
597	<
598	<
599	<	/**
600	<	* Fair Read tryLock succeeds if readlocked but not writelocked
601	<	*/
602	<	public void testTryLockWhenReadLockedFair() throws InterruptedException {
603	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
604	<	lock.readLock().lock();
605	<	Thread t = newStartedThread(new CheckedRunnable() {
606	<	public void realRun() {
607	<	assertTrue(lock.readLock().tryLock());
608	<	lock.readLock().unlock();
609	<	}});
610	<
611	<	t.join();
612	<	lock.readLock().unlock();
613	<	}
614	<
615	<
616	<
617	<	/**
618	<	* Fair write tryLock fails when readlocked
619	<	*/
620	<	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
621	<	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() {
776		assertFalse(lock.writeLock().tryLock());
777		}});
778
779	<	t.join();
779	>	awaitTermination(t);
780		lock.readLock().unlock();
781		}
782
632	–
633	–
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 {
794	<	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
794	>	long startTime = System.nanoTime();
795	>	long timeoutMillis = 10;
796	>	assertFalse(lock.writeLock().tryLock(timeoutMillis, MILLISECONDS));
797	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
798		}});
799
800	<	t.join();
801	<	assertTrue(lock.writeLock().isHeldByCurrentThread());
647	<	lock.writeLock().unlock();
800	>	awaitTermination(t);
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 {
814	<	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
814	>	long startTime = System.nanoTime();
815	>	long timeoutMillis = 10;
816	>	assertFalse(lock.readLock().tryLock(timeoutMillis, MILLISECONDS));
817	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
818		}});
819
820	<	t.join();
820	>	awaitTermination(t);
821		assertTrue(lock.writeLock().isHeldByCurrentThread());
822		lock.writeLock().unlock();
823		}
824
666	–
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 ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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();
839		}});
840
841	<	Thread.sleep(SHORT_DELAY_MS);
841	>	waitForQueuedThread(lock, t);
842		t.interrupt();
843	<	Thread.sleep(SHORT_DELAY_MS);
844	<	t.join();
845	<	lock.writeLock().unlock();
843	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
844	>	awaitTermination(t);
845	>	releaseWriteLock(lock);
846		}
847
848		/**
849		* read lockInterruptibly succeeds if lock free else is interruptible
850		*/
851	<	public void testReadLockInterruptibly() throws InterruptedException {
852	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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();
864		}});
865
866	<	Thread.sleep(SHORT_DELAY_MS);
866	>	waitForQueuedThread(lock, t);
867		t.interrupt();
868	<	t.join();
869	<	lock.writeLock().unlock();
868	>	awaitTermination(t);
869	>	releaseWriteLock(lock);
870		}
871
872		/**
873		* Calling await without holding lock throws IllegalMonitorStateException
874		*/
875	<	public void testAwait_IllegalMonitor() throws InterruptedException {
876	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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	<	try {
881	<	c.await();
882	<	shouldThrow();
883	<	} catch (IllegalMonitorStateException success) {}
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 724 \| Line 905 \| public class ReentrantReadWriteLockTest
905		}
906
907		/**
908	<	* awaitNanos without a signal times out
908	>	* Calling signalAll without holding lock throws IllegalMonitorStateException
909		*/
910	<	public void testAwaitNanos_Timeout() throws InterruptedException {
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	<
916	<	lock.writeLock().lock();
917	<	long t = c.awaitNanos(100);
918	<	assertTrue(t <= 0);
736	<	lock.writeLock().unlock();
915	>	try {
916	>	c.signalAll();
917	>	shouldThrow();
918	>	} catch (IllegalMonitorStateException success) {}
919		}
920
921	+	/**
922	+	* awaitNanos without a signal times out
923	+	*/
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	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
950	<	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	<	java.util.Date d = new java.util.Date();
969	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
970	<	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 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() {
990		public void realRun() throws InterruptedException {
991		lock.writeLock().lock();
992	+	locked.countDown();
993		c.await();
994		lock.writeLock().unlock();
995		}});
996
997	<	Thread.sleep(SHORT_DELAY_MS);
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	<	t.join(SHORT_DELAY_MS);
781	<	assertFalse(t.isAlive());
782	<	}
783	<
784	<	/** A helper class for uninterruptible wait tests */
785	<	class UninterruptableThread extends Thread {
786	<	private Lock lock;
787	<	private Condition c;
788	<
789	<	public volatile boolean canAwake = false;
790	<	public volatile boolean interrupted = false;
791	<	public volatile boolean lockStarted = false;
792	<
793	<	public UninterruptableThread(Lock lock, Condition c) {
794	<	this.lock = lock;
795	<	this.c = c;
796	<	}
797	<
798	<	public synchronized void run() {
799	<	lock.lock();
800	<	lockStarted = true;
801	<
802	<	while (!canAwake) {
803	<	c.awaitUninterruptibly();
804	<	}
805	<
806	<	interrupted = isInterrupted();
807	<	lock.unlock();
808	<	}
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	<	UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
1015	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
1016
1017	<	thread.start();
1017	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1018	>	public void realRun() {
1019	>	// Interrupt before awaitUninterruptibly
1020	>	lock.writeLock().lock();
1021	>	pleaseInterrupt.countDown();
1022	>	Thread.currentThread().interrupt();
1023	>	c.awaitUninterruptibly();
1024	>	assertTrue(Thread.interrupted());
1025	>	lock.writeLock().unlock();
1026	>	}});
1027
1028	<	while (!thread.lockStarted) {
1029	<	Thread.sleep(100);
1030	<	}
1028	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1029	>	public void realRun() {
1030	>	// Interrupt during awaitUninterruptibly
1031	>	lock.writeLock().lock();
1032	>	pleaseInterrupt.countDown();
1033	>	c.awaitUninterruptibly();
1034	>	assertTrue(Thread.interrupted());
1035	>	lock.writeLock().unlock();
1036	>	}});
1037
1038	+	await(pleaseInterrupt);
1039		lock.writeLock().lock();
1040	<	try {
1041	<	thread.interrupt();
1042	<	thread.canAwake = true;
1043	<	c.signal();
1044	<	} finally {
831	<	lock.writeLock().unlock();
832	<	}
1040	>	lock.writeLock().unlock();
1041	>	t2.interrupt();
1042	>
1043	>	assertThreadStaysAlive(t1);
1044	>	assertTrue(t2.isAlive());
1045
1046	<	thread.join();
1047	<	assertTrue(thread.interrupted);
1048	<	assertFalse(thread.isAlive());
1046	>	lock.writeLock().lock();
1047	>	c.signalAll();
1048	>	lock.writeLock().unlock();
1049	>
1050	>	awaitTermination(t1);
1051	>	awaitTermination(t2);
1052		}
1053
1054		/**
1055	<	* await is interruptible
1055	>	* await/awaitNanos/awaitUntil is interruptible
1056		*/
1057	<	public void testAwait_Interrupt() throws InterruptedException {
1058	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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	<	c.await();
1074	<	lock.writeLock().unlock();
1073	>	assertWriteLockedByMoi(lock);
1074	>	assertHasNoWaiters(lock, c);
1075	>	locked.countDown();
1076	>	try {
1077	>	await(c, awaitMethod);
1078	>	} finally {
1079	>	assertWriteLockedByMoi(lock);
1080	>	assertHasNoWaiters(lock, c);
1081	>	lock.writeLock().unlock();
1082	>	assertFalse(Thread.interrupted());
1083	>	}
1084		}});
1085
1086	<	Thread.sleep(SHORT_DELAY_MS);
1086	>	await(locked);
1087	>	assertHasWaiters(lock, c, t);
1088		t.interrupt();
1089	<	t.join(SHORT_DELAY_MS);
1090	<	assertFalse(t.isAlive());
1089	>	awaitTermination(t);
1090	>	assertNotWriteLocked(lock);
1091		}
1092
1093		/**
1094	<	* awaitNanos is interruptible
1094	>	* signalAll wakes up all threads
1095		*/
1096	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
1097	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1108	>	final CountDownLatch locked = new CountDownLatch(2);
1109	>	final Lock writeLock = lock.writeLock();
1110	>	class Awaiter extends CheckedRunnable {
1111		public void realRun() throws InterruptedException {
1112	<	lock.writeLock().lock();
1113	<	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
1114	<	lock.writeLock().unlock();
1115	<	}});
1112	>	writeLock.lock();
1113	>	locked.countDown();
1114	>	await(c, awaitMethod);
1115	>	writeLock.unlock();
1116	>	}
1117	>	}
1118
1119	<	Thread.sleep(SHORT_DELAY_MS);
1120	<	t.interrupt();
1121	<	t.join(SHORT_DELAY_MS);
1122	<	assertFalse(t.isAlive());
1119	>	Thread t1 = newStartedThread(new Awaiter());
1120	>	Thread t2 = newStartedThread(new Awaiter());
1121	>
1122	>	await(locked);
1123	>	writeLock.lock();
1124	>	assertHasWaiters(lock, c, t1, t2);
1125	>	c.signalAll();
1126	>	assertHasNoWaiters(lock, c);
1127	>	writeLock.unlock();
1128	>	awaitTermination(t1);
1129	>	awaitTermination(t2);
1130		}
1131
1132		/**
1133	<	* awaitUntil is interruptible
1133	>	* signal wakes up waiting threads in FIFO order
1134		*/
1135	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
1136	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1141	>	final CountDownLatch locked1 = new CountDownLatch(1);
1142	>	final CountDownLatch locked2 = new CountDownLatch(1);
1143	>	final Lock writeLock = lock.writeLock();
1144	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1145		public void realRun() throws InterruptedException {
1146	<	lock.writeLock().lock();
1147	<	java.util.Date d = new java.util.Date();
1148	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1149	<	lock.writeLock().unlock();
1146	>	writeLock.lock();
1147	>	locked1.countDown();
1148	>	c.await();
1149	>	writeLock.unlock();
1150		}});
1151
1152	<	Thread.sleep(SHORT_DELAY_MS);
1153	<	t.interrupt();
1154	<	t.join(SHORT_DELAY_MS);
1155	<	assertFalse(t.isAlive());
1152	>	await(locked1);
1153	>
1154	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1155	>	public void realRun() throws InterruptedException {
1156	>	writeLock.lock();
1157	>	locked2.countDown();
1158	>	c.await();
1159	>	writeLock.unlock();
1160	>	}});
1161	>
1162	>	await(locked2);
1163	>
1164	>	writeLock.lock();
1165	>	assertHasWaiters(lock, c, t1, t2);
1166	>	assertFalse(lock.hasQueuedThreads());
1167	>	c.signal();
1168	>	assertHasWaiters(lock, c, t2);
1169	>	assertTrue(lock.hasQueuedThread(t1));
1170	>	assertFalse(lock.hasQueuedThread(t2));
1171	>	c.signal();
1172	>	assertHasNoWaiters(lock, c);
1173	>	assertTrue(lock.hasQueuedThread(t1));
1174	>	assertTrue(lock.hasQueuedThread(t2));
1175	>	writeLock.unlock();
1176	>	awaitTermination(t1);
1177	>	awaitTermination(t2);
1178		}
1179
1180		/**
1181	<	* signalAll wakes up all threads
1182	<	*/
1183	<	public void testSignalAll() throws InterruptedException {
1184	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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	<	Thread.sleep(SHORT_DELAY_MS);
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	<	t1.join(SHORT_DELAY_MS);
1223	<	t2.join(SHORT_DELAY_MS);
923	<	assertFalse(t1.isAlive());
924	<	assertFalse(t2.isAlive());
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 ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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());
1266		t1.start();
1267	<	Thread.sleep(SHORT_DELAY_MS);
1267	>	waitForQueuedThread(lock, t1);
1268		assertTrue(lock.hasQueuedThreads());
1269		t2.start();
1270	<	Thread.sleep(SHORT_DELAY_MS);
1270	>	waitForQueuedThread(lock, t2);
1271		assertTrue(lock.hasQueuedThreads());
1272		t1.interrupt();
1273	<	Thread.sleep(SHORT_DELAY_MS);
1273	>	awaitTermination(t1);
1274		assertTrue(lock.hasQueuedThreads());
1275		lock.writeLock().unlock();
1276	<	Thread.sleep(SHORT_DELAY_MS);
1276	>	awaitTermination(t2);
1277		assertFalse(lock.hasQueuedThreads());
968	–	t1.join();
969	–	t2.join();
1278		}
1279
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 ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1298	<	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1299	<	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1300	<	assertFalse(sync.hasQueuedThread(t1));
1301	<	assertFalse(sync.hasQueuedThread(t2));
1302	<	sync.writeLock().lock();
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();
1306		t1.start();
1307	<	Thread.sleep(SHORT_DELAY_MS);
1308	<	assertTrue(sync.hasQueuedThread(t1));
1307	>	waitForQueuedThread(lock, t1);
1308	>	assertTrue(lock.hasQueuedThread(t1));
1309	>	assertFalse(lock.hasQueuedThread(t2));
1310		t2.start();
1311	<	Thread.sleep(SHORT_DELAY_MS);
1312	<	assertTrue(sync.hasQueuedThread(t1));
1313	<	assertTrue(sync.hasQueuedThread(t2));
1311	>	waitForQueuedThread(lock, t2);
1312	>	assertTrue(lock.hasQueuedThread(t1));
1313	>	assertTrue(lock.hasQueuedThread(t2));
1314		t1.interrupt();
1315	<	Thread.sleep(SHORT_DELAY_MS);
1316	<	assertFalse(sync.hasQueuedThread(t1));
1317	<	assertTrue(sync.hasQueuedThread(t2));
1318	<	sync.writeLock().unlock();
1319	<	Thread.sleep(SHORT_DELAY_MS);
1320	<	assertFalse(sync.hasQueuedThread(t1));
1321	<	Thread.sleep(SHORT_DELAY_MS);
1008	<	assertFalse(sync.hasQueuedThread(t2));
1009	<	t1.join();
1010	<	t2.join();
1315	>	awaitTermination(t1);
1316	>	assertFalse(lock.hasQueuedThread(t1));
1317	>	assertTrue(lock.hasQueuedThread(t2));
1318	>	lock.writeLock().unlock();
1319	>	awaitTermination(t2);
1320	>	assertFalse(lock.hasQueuedThread(t1));
1321	>	assertFalse(lock.hasQueuedThread(t2));
1322		}
1323
1013	–
1324		/**
1325		* getQueueLength reports number of waiting threads
1326		*/
1327	<	public void testGetQueueLength() throws InterruptedException {
1328	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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();
1336		t1.start();
1337	<	Thread.sleep(SHORT_DELAY_MS);
1337	>	waitForQueuedThread(lock, t1);
1338		assertEquals(1, lock.getQueueLength());
1339		t2.start();
1340	<	Thread.sleep(SHORT_DELAY_MS);
1340	>	waitForQueuedThread(lock, t2);
1341		assertEquals(2, lock.getQueueLength());
1342		t1.interrupt();
1343	<	Thread.sleep(SHORT_DELAY_MS);
1343	>	awaitTermination(t1);
1344		assertEquals(1, lock.getQueueLength());
1345		lock.writeLock().unlock();
1346	<	Thread.sleep(SHORT_DELAY_MS);
1346	>	awaitTermination(t2);
1347		assertEquals(0, lock.getQueueLength());
1035	–	t1.join();
1036	–	t2.join();
1348		}
1349
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();
1362		assertTrue(lock.getQueuedThreads().isEmpty());
1363		t1.start();
1364	<	Thread.sleep(SHORT_DELAY_MS);
1364	>	waitForQueuedThread(lock, t1);
1365	>	assertEquals(1, lock.getQueuedThreads().size());
1366		assertTrue(lock.getQueuedThreads().contains(t1));
1367		t2.start();
1368	<	Thread.sleep(SHORT_DELAY_MS);
1368	>	waitForQueuedThread(lock, t2);
1369	>	assertEquals(2, lock.getQueuedThreads().size());
1370		assertTrue(lock.getQueuedThreads().contains(t1));
1371		assertTrue(lock.getQueuedThreads().contains(t2));
1372		t1.interrupt();
1373	<	Thread.sleep(SHORT_DELAY_MS);
1373	>	awaitTermination(t1);
1374		assertFalse(lock.getQueuedThreads().contains(t1));
1375		assertTrue(lock.getQueuedThreads().contains(t2));
1376	+	assertEquals(1, lock.getQueuedThreads().size());
1377		lock.writeLock().unlock();
1378	<	Thread.sleep(SHORT_DELAY_MS);
1378	>	awaitTermination(t2);
1379		assertTrue(lock.getQueuedThreads().isEmpty());
1063	–	t1.join();
1064	–	t2.join();
1380		}
1381
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 1078 \| 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();
1405		} catch (NullPointerException success) {}
1406		}
1407
1089	–
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 1099 \| 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 1112 \| 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 1123 \| Line 1447 \| public class ReentrantReadWriteLockTest
1447		} catch (IllegalMonitorStateException success) {}
1448		}
1449
1126	–
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 1138 \| 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 1149 \| Line 1476 \| public class ReentrantReadWriteLockTest
1476		} catch (IllegalMonitorStateException success) {}
1477		}
1478
1152	–
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 1164 \| 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 1175 \| Line 1508 \| public class ReentrantReadWriteLockTest
1508		} catch (IllegalMonitorStateException success) {}
1509		}
1510
1178	–
1511		/**
1512		* hasWaiters returns true when a thread is waiting, else false
1513		*/
1514	<	public void testHasWaiters() throws InterruptedException {
1515	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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	<	assertEquals(0, lock.getWaitQueueLength(c));
1526	>	locked.countDown();
1527		c.await();
1528	+	assertHasNoWaiters(lock, c);
1529	+	assertFalse(lock.hasWaiters(c));
1530		lock.writeLock().unlock();
1531		}});
1532
1533	<	Thread.sleep(SHORT_DELAY_MS);
1533	>	await(locked);
1534		lock.writeLock().lock();
1535	+	assertHasWaiters(lock, c, t);
1536		assertTrue(lock.hasWaiters(c));
1197	–	assertEquals(1, lock.getWaitQueueLength(c));
1537		c.signal();
1538	<	lock.writeLock().unlock();
1200	<	Thread.sleep(SHORT_DELAY_MS);
1201	<	lock.writeLock().lock();
1538	>	assertHasNoWaiters(lock, c);
1539		assertFalse(lock.hasWaiters(c));
1203	–	assertEquals(0, lock.getWaitQueueLength(c));
1540		lock.writeLock().unlock();
1541	<	t.join(SHORT_DELAY_MS);
1542	<	assertFalse(t.isAlive());
1541	>	awaitTermination(t);
1542	>	assertHasNoWaiters(lock, c);
1543		}
1544
1545		/**
1546		* getWaitQueueLength returns number of waiting threads
1547		*/
1548	<	public void testGetWaitQueueLength() throws InterruptedException {
1549	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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() {
1556		public void realRun() throws InterruptedException {
1557		lock.writeLock().lock();
1218	–	assertFalse(lock.hasWaiters(c));
1558		assertEquals(0, lock.getWaitQueueLength(c));
1559	+	locked.countDown();
1560		c.await();
1561		lock.writeLock().unlock();
1562		}});
1563
1564	<	Thread.sleep(SHORT_DELAY_MS);
1564	>	await(locked);
1565		lock.writeLock().lock();
1566	<	assertTrue(lock.hasWaiters(c));
1566	>	assertHasWaiters(lock, c, t);
1567		assertEquals(1, lock.getWaitQueueLength(c));
1568		c.signal();
1569	<	lock.writeLock().unlock();
1230	<	Thread.sleep(SHORT_DELAY_MS);
1231	<	lock.writeLock().lock();
1232	<	assertFalse(lock.hasWaiters(c));
1569	>	assertHasNoWaiters(lock, c);
1570		assertEquals(0, lock.getWaitQueueLength(c));
1571		lock.writeLock().unlock();
1572	<	t.join(SHORT_DELAY_MS);
1236	<	assertFalse(t.isAlive());
1572	>	awaitTermination(t);
1573		}
1574
1239	–
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);
1586		Thread t1 = new Thread(new CheckedRunnable() {
1587		public void realRun() throws InterruptedException {
1588		lock.writeLock().lock();
1589		assertTrue(lock.getWaitingThreads(c).isEmpty());
1590	+	locked1.countDown();
1591		c.await();
1592		lock.writeLock().unlock();
1593		}});
#	Line 1255 \| Line 1596 \| public class ReentrantReadWriteLockTest
1596		public void realRun() throws InterruptedException {
1597		lock.writeLock().lock();
1598		assertFalse(lock.getWaitingThreads(c).isEmpty());
1599	+	locked2.countDown();
1600		c.await();
1601		lock.writeLock().unlock();
1602		}});
#	Line 1262 \| Line 1604 \| public class ReentrantReadWriteLockTest
1604		lock.writeLock().lock();
1605		assertTrue(lock.getWaitingThreads(c).isEmpty());
1606		lock.writeLock().unlock();
1607	+
1608		t1.start();
1609	<	Thread.sleep(SHORT_DELAY_MS);
1609	>	await(locked1);
1610		t2.start();
1611	<	Thread.sleep(SHORT_DELAY_MS);
1611	>	await(locked2);
1612	>
1613		lock.writeLock().lock();
1614		assertTrue(lock.hasWaiters(c));
1615		assertTrue(lock.getWaitingThreads(c).contains(t1));
1616		assertTrue(lock.getWaitingThreads(c).contains(t2));
1617	+	assertEquals(2, lock.getWaitingThreads(c).size());
1618		c.signalAll();
1619	+	assertHasNoWaiters(lock, c);
1620		lock.writeLock().unlock();
1621	<	Thread.sleep(SHORT_DELAY_MS);
1622	<	lock.writeLock().lock();
1623	<	assertFalse(lock.hasWaiters(c));
1624	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1625	<	lock.writeLock().unlock();
1280	<	t1.join(SHORT_DELAY_MS);
1281	<	t2.join(SHORT_DELAY_MS);
1282	<	assertFalse(t1.isAlive());
1283	<	assertFalse(t2.isAlive());
1621	>
1622	>	awaitTermination(t1);
1623	>	awaitTermination(t2);
1624	>
1625	>	assertHasNoWaiters(lock, c);
1626		}
1627
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);
1303	<	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();
1316	<	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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Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents): Revision 1.45 by jsr166, Sun May 1 23:49:41 2011 UTC vs. Revision 1.77 by jsr166, Fri Jul 3 01:25:15 2015 UTC

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Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.45 by jsr166, Sun May 1 23:49:41 2011 UTC vs.
Revision 1.77 by jsr166, Fri Jul 3 01:25:15 2015 UTC