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

Comparing jsr166/src/test/tck/StampedLockTest.java (file contents):
Revision 1.6 by dl, Thu Mar 21 19:06:54 2013 UTC vs.
Revision 1.24 by jsr166, Tue Jun 7 23:28:30 2016 UTC

#	Line 5 | Line 5
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		*/
7
8	<	import junit.framework.*;
9	<	import java.util.concurrent.atomic.AtomicBoolean;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>
10	>	import java.util.concurrent.CountDownLatch;
11		import java.util.concurrent.locks.Lock;
12		import java.util.concurrent.locks.StampedLock;
13	<	import java.util.concurrent.CountDownLatch;
14	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
15	<	import java.util.*;
15	<	import java.util.concurrent.*;
13	>
14	>	import junit.framework.Test;
15	>	import junit.framework.TestSuite;
16
17		public class StampedLockTest extends JSR166TestCase {
18		public static void main(String[] args) {
19	<	junit.textui.TestRunner.run(suite());
19	>	main(suite(), args);
20		}
21		public static Test suite() {
22		return new TestSuite(StampedLockTest.class);
#	Line 166 | Line 166 | public class StampedLockTest extends JSR
166		*/
167		public void testWriteUnlock_IMSE2() {
168		StampedLock lock = new StampedLock();
169	+	long s = lock.writeLock();
170	+	lock.unlockWrite(s);
171		try {
170	–	long s = lock.writeLock();
171	–	lock.unlockWrite(s);
172		lock.unlockWrite(s);
173		shouldThrow();
174		} catch (IllegalMonitorStateException success) {}
#	Line 179 | Line 179 | public class StampedLockTest extends JSR
179		*/
180		public void testWriteUnlock_IMSE3() {
181		StampedLock lock = new StampedLock();
182	+	long s = lock.readLock();
183		try {
183	–	long s = lock.readLock();
184		lock.unlockWrite(s);
185		shouldThrow();
186		} catch (IllegalMonitorStateException success) {}
#	Line 191 | Line 191 | public class StampedLockTest extends JSR
191		*/
192		public void testReadUnlock_IMSE() {
193		StampedLock lock = new StampedLock();
194	+	long s = lock.readLock();
195	+	lock.unlockRead(s);
196		try {
195	–	long s = lock.readLock();
196	–	lock.unlockRead(s);
197		lock.unlockRead(s);
198		shouldThrow();
199		} catch (IllegalMonitorStateException success) {}
#	Line 215 | Line 215 | public class StampedLockTest extends JSR
215		*/
216		public void testReadUnlock_IMSE3() {
217		StampedLock lock = new StampedLock();
218	+	long s = lock.writeLock();
219		try {
219	–	long s = lock.writeLock();
220		lock.unlockRead(s);
221		shouldThrow();
222		} catch (IllegalMonitorStateException success) {}
#	Line 233 | Line 233 | public class StampedLockTest extends JSR
233		/**
234		* A stamp obtained from a successful lock operation validates
235		*/
236	<	public void testValidate() {
237	<	try {
238	<	StampedLock lock = new StampedLock();
239	<	long s = lock.writeLock();
240	<	assertTrue(lock.validate(s));
241	<	lock.unlockWrite(s);
242	<	s = lock.readLock();
243	<	assertTrue(lock.validate(s));
244	<	lock.unlockRead(s);
245	<	assertTrue((s = lock.tryWriteLock()) != 0L);
246	<	assertTrue(lock.validate(s));
247	<	lock.unlockWrite(s);
248	<	assertTrue((s = lock.tryReadLock()) != 0L);
249	<	assertTrue(lock.validate(s));
250	<	lock.unlockRead(s);
251	<	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
252	<	assertTrue(lock.validate(s));
253	<	lock.unlockWrite(s);
254	<	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
255	<	assertTrue(lock.validate(s));
256	<	lock.unlockRead(s);
257	<	assertTrue((s = lock.tryOptimisticRead()) != 0L);
258	<	} catch (InterruptedException ie) {
259	<	threadUnexpectedException(ie);
260	<	}
236	>	public void testValidate() throws InterruptedException {
237	>	StampedLock lock = new StampedLock();
238	>	long s = lock.writeLock();
239	>	assertTrue(lock.validate(s));
240	>	lock.unlockWrite(s);
241	>	s = lock.readLock();
242	>	assertTrue(lock.validate(s));
243	>	lock.unlockRead(s);
244	>	assertTrue((s = lock.tryWriteLock()) != 0L);
245	>	assertTrue(lock.validate(s));
246	>	lock.unlockWrite(s);
247	>	assertTrue((s = lock.tryReadLock()) != 0L);
248	>	assertTrue(lock.validate(s));
249	>	lock.unlockRead(s);
250	>	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
251	>	assertTrue(lock.validate(s));
252	>	lock.unlockWrite(s);
253	>	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
254	>	assertTrue(lock.validate(s));
255	>	lock.unlockRead(s);
256	>	assertTrue((s = lock.tryOptimisticRead()) != 0L);
257		}
258
259		/**
260		* A stamp obtained from an unsuccessful lock operation does not validate
261		*/
262	<	public void testValidate2() {
263	<	try {
264	<	StampedLock lock = new StampedLock();
265	<	long s;
266	<	assertTrue((s = lock.writeLock()) != 0L);
267	<	assertTrue(lock.validate(s));
268	<	assertFalse(lock.validate(lock.tryWriteLock()));
269	<	assertFalse(lock.validate(lock.tryWriteLock(100L, MILLISECONDS)));
270	<	assertFalse(lock.validate(lock.tryReadLock()));
271	<	assertFalse(lock.validate(lock.tryReadLock(100L, MILLISECONDS)));
272	<	assertFalse(lock.validate(lock.tryOptimisticRead()));
277	<	lock.unlockWrite(s);
278	<	} catch (InterruptedException ie) {
279	<	threadUnexpectedException(ie);
280	<	}
262	>	public void testValidate2() throws InterruptedException {
263	>	StampedLock lock = new StampedLock();
264	>	long s;
265	>	assertTrue((s = lock.writeLock()) != 0L);
266	>	assertTrue(lock.validate(s));
267	>	assertFalse(lock.validate(lock.tryWriteLock()));
268	>	assertFalse(lock.validate(lock.tryWriteLock(10L, MILLISECONDS)));
269	>	assertFalse(lock.validate(lock.tryReadLock()));
270	>	assertFalse(lock.validate(lock.tryReadLock(10L, MILLISECONDS)));
271	>	assertFalse(lock.validate(lock.tryOptimisticRead()));
272	>	lock.unlockWrite(s);
273		}
274
275		/**
276		* writeLockInterruptibly is interruptible
277		*/
278	<	public void testWriteLockInterruptibly_Interruptible() {
278	>	public void testWriteLockInterruptibly_Interruptible()
279	>	throws InterruptedException {
280		final CountDownLatch running = new CountDownLatch(1);
281		final StampedLock lock = new StampedLock();
282		long s = lock.writeLock();
#	Line 292 | Line 285 | public class StampedLockTest extends JSR
285		running.countDown();
286		lock.writeLockInterruptibly();
287		}});
288	<	try {
289	<	running.await();
290	<	waitForThreadToEnterWaitState(t, 100);
291	<	t.interrupt();
292	<	awaitTermination(t);
293	<	releaseWriteLock(lock, s);
301	<	} catch (InterruptedException ie) {
302	<	threadUnexpectedException(ie);
303	<	}
288	>
289	>	running.await();
290	>	waitForThreadToEnterWaitState(t, 100);
291	>	t.interrupt();
292	>	awaitTermination(t);
293	>	releaseWriteLock(lock, s);
294		}
295
296		/**
297		* timed tryWriteLock is interruptible
298		*/
299	<	public void testWriteTryLock_Interruptible() {
299	>	public void testWriteTryLock_Interruptible() throws InterruptedException {
300		final CountDownLatch running = new CountDownLatch(1);
301		final StampedLock lock = new StampedLock();
302		long s = lock.writeLock();
#	Line 315 | Line 305 | public class StampedLockTest extends JSR
305		running.countDown();
306		lock.tryWriteLock(2 * LONG_DELAY_MS, MILLISECONDS);
307		}});
308	<	try {
309	<	running.await();
310	<	waitForThreadToEnterWaitState(t, 100);
311	<	t.interrupt();
312	<	awaitTermination(t);
313	<	releaseWriteLock(lock, s);
324	<	} catch (InterruptedException ie) {
325	<	threadUnexpectedException(ie);
326	<	}
308	>
309	>	running.await();
310	>	waitForThreadToEnterWaitState(t, 100);
311	>	t.interrupt();
312	>	awaitTermination(t);
313	>	releaseWriteLock(lock, s);
314		}
315
316		/**
317		* readLockInterruptibly is interruptible
318		*/
319	<	public void testReadLockInterruptibly_Interruptible() {
319	>	public void testReadLockInterruptibly_Interruptible()
320	>	throws InterruptedException {
321		final CountDownLatch running = new CountDownLatch(1);
322		final StampedLock lock = new StampedLock();
323		long s = lock.writeLock();
#	Line 338 | Line 326 | public class StampedLockTest extends JSR
326		running.countDown();
327		lock.readLockInterruptibly();
328		}});
329	<	try {
330	<	running.await();
331	<	waitForThreadToEnterWaitState(t, 100);
332	<	t.interrupt();
333	<	awaitTermination(t);
334	<	releaseWriteLock(lock, s);
347	<	} catch (InterruptedException ie) {
348	<	threadUnexpectedException(ie);
349	<	}
329	>
330	>	running.await();
331	>	waitForThreadToEnterWaitState(t, 100);
332	>	t.interrupt();
333	>	awaitTermination(t);
334	>	releaseWriteLock(lock, s);
335		}
336
337		/**
338		* timed tryReadLock is interruptible
339		*/
340	<	public void testReadTryLock_Interruptible() {
340	>	public void testReadTryLock_Interruptible() throws InterruptedException {
341		final CountDownLatch running = new CountDownLatch(1);
342		final StampedLock lock = new StampedLock();
343		long s = lock.writeLock();
#	Line 361 | Line 346 | public class StampedLockTest extends JSR
346		running.countDown();
347		lock.tryReadLock(2 * LONG_DELAY_MS, MILLISECONDS);
348		}});
349	<	try {
350	<	running.await();
351	<	waitForThreadToEnterWaitState(t, 100);
352	<	t.interrupt();
353	<	awaitTermination(t);
354	<	releaseWriteLock(lock, s);
370	<	} catch (InterruptedException ie) {
371	<	threadUnexpectedException(ie);
372	<	}
349	>
350	>	running.await();
351	>	waitForThreadToEnterWaitState(t, 100);
352	>	t.interrupt();
353	>	awaitTermination(t);
354	>	releaseWriteLock(lock, s);
355		}
356
357		/**
#	Line 442 | Line 424 | public class StampedLockTest extends JSR
424		/**
425		* A writelock succeeds only after a reading thread unlocks
426		*/
427	<	public void testWriteAfterReadLock() {
427	>	public void testWriteAfterReadLock() throws InterruptedException {
428		final CountDownLatch running = new CountDownLatch(1);
429		final StampedLock lock = new StampedLock();
430		long rs = lock.readLock();
#	Line 452 | Line 434 | public class StampedLockTest extends JSR
434		long s = lock.writeLock();
435		lock.unlockWrite(s);
436		}});
437	<	try {
438	<	running.await();
439	<	waitForThreadToEnterWaitState(t, 100);
440	<	assertFalse(lock.isWriteLocked());
441	<	lock.unlockRead(rs);
442	<	awaitTermination(t);
443	<	assertFalse(lock.isWriteLocked());
462	<	} catch (InterruptedException ie) {
463	<	threadUnexpectedException(ie);
464	<	}
437	>
438	>	running.await();
439	>	waitForThreadToEnterWaitState(t, 100);
440	>	assertFalse(lock.isWriteLocked());
441	>	lock.unlockRead(rs);
442	>	awaitTermination(t);
443	>	assertFalse(lock.isWriteLocked());
444		}
445
446		/**
#	Line 475 | Line 454 | public class StampedLockTest extends JSR
454		long rs = lock.readLock();
455		lock.unlockRead(rs);
456		}});
457	+
458		awaitTermination(t1);
459
460		Thread t2 = newStartedThread(new CheckedRunnable() {
#	Line 482 | Line 462 | public class StampedLockTest extends JSR
462		long ws = lock.writeLock();
463		lock.unlockWrite(ws);
464		}});
465	+
466		assertFalse(lock.isWriteLocked());
467		lock.unlockRead(s);
468		awaitTermination(t2);
#	Line 576 | Line 557 | public class StampedLockTest extends JSR
557		assertEquals(rs, 0L);
558		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
559		}});
560	<
560	>
561		awaitTermination(t);
562		assertTrue(lock.isWriteLocked());
563		lock.unlockWrite(s);
#	Line 585 | Line 566 | public class StampedLockTest extends JSR
566		/**
567		* writeLockInterruptibly succeeds if unlocked, else is interruptible
568		*/
569	<	public void testWriteLockInterruptibly() {
569	>	public void testWriteLockInterruptibly() throws InterruptedException {
570		final CountDownLatch running = new CountDownLatch(1);
571		final StampedLock lock = new StampedLock();
572	<	long s = 0L;
592	<	try {
593	<	s = lock.writeLockInterruptibly();
594	<	} catch (InterruptedException ie) {
595	<	threadUnexpectedException(ie);
596	<	}
572	>	long s = lock.writeLockInterruptibly();
573		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
574		public void realRun() throws InterruptedException {
575		running.countDown();
576		lock.writeLockInterruptibly();
577		}});
578
579	<	try {
580	<	running.await();
581	<	waitForThreadToEnterWaitState(t, 100);
582	<	t.interrupt();
583	<	assertTrue(lock.isWriteLocked());
584	<	awaitTermination(t);
609	<	releaseWriteLock(lock, s);
610	<	} catch (InterruptedException ie) {
611	<	threadUnexpectedException(ie);
612	<	}
613	<
579	>	running.await();
580	>	waitForThreadToEnterWaitState(t, 100);
581	>	t.interrupt();
582	>	assertTrue(lock.isWriteLocked());
583	>	awaitTermination(t);
584	>	releaseWriteLock(lock, s);
585		}
586
587		/**
588		* readLockInterruptibly succeeds if lock free else is interruptible
589		*/
590	<	public void testReadLockInterruptibly() {
590	>	public void testReadLockInterruptibly() throws InterruptedException {
591		final CountDownLatch running = new CountDownLatch(1);
592		final StampedLock lock = new StampedLock();
593	<	long s = 0L;
594	<	try {
595	<	s = lock.readLockInterruptibly();
596	<	lock.unlockRead(s);
626	<	s = lock.writeLockInterruptibly();
627	<	} catch (InterruptedException ie) {
628	<	threadUnexpectedException(ie);
629	<	}
593	>	long s;
594	>	s = lock.readLockInterruptibly();
595	>	lock.unlockRead(s);
596	>	s = lock.writeLockInterruptibly();
597		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
598		public void realRun() throws InterruptedException {
599		running.countDown();
600		lock.readLockInterruptibly();
601		}});
602	<	try {
603	<	running.await();
604	<	waitForThreadToEnterWaitState(t, 100);
605	<	t.interrupt();
606	<	awaitTermination(t);
607	<	releaseWriteLock(lock, s);
641	<	} catch (InterruptedException ie) {
642	<	threadUnexpectedException(ie);
643	<	}
602	>
603	>	running.await();
604	>	waitForThreadToEnterWaitState(t, 100);
605	>	t.interrupt();
606	>	awaitTermination(t);
607	>	releaseWriteLock(lock, s);
608		}
609
610		/**
#	Line 674 | Line 638 | public class StampedLockTest extends JSR
638		/**
639		* tryOptimisticRead succeeds and validates if unlocked, fails if locked
640		*/
641	<	public void testValidateOptimistic() {
642	<	try {
643	<	StampedLock lock = new StampedLock();
644	<	long s, p;
645	<	assertTrue((p = lock.tryOptimisticRead()) != 0L);
646	<	assertTrue(lock.validate(p));
647	<	assertTrue((s = lock.writeLock()) != 0L);
648	<	assertFalse((p = lock.tryOptimisticRead()) != 0L);
649	<	assertTrue(lock.validate(s));
650	<	lock.unlockWrite(s);
651	<	assertTrue((p = lock.tryOptimisticRead()) != 0L);
652	<	assertTrue(lock.validate(p));
653	<	assertTrue((s = lock.readLock()) != 0L);
654	<	assertTrue(lock.validate(s));
655	<	assertTrue((p = lock.tryOptimisticRead()) != 0L);
656	<	assertTrue(lock.validate(p));
657	<	lock.unlockRead(s);
658	<	assertTrue((s = lock.tryWriteLock()) != 0L);
659	<	assertTrue(lock.validate(s));
660	<	assertFalse((p = lock.tryOptimisticRead()) != 0L);
661	<	lock.unlockWrite(s);
662	<	assertTrue((s = lock.tryReadLock()) != 0L);
663	<	assertTrue(lock.validate(s));
664	<	assertTrue((p = lock.tryOptimisticRead()) != 0L);
665	<	lock.unlockRead(s);
666	<	assertTrue(lock.validate(p));
667	<	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
668	<	assertFalse((p = lock.tryOptimisticRead()) != 0L);
669	<	assertTrue(lock.validate(s));
670	<	lock.unlockWrite(s);
671	<	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
672	<	assertTrue(lock.validate(s));
673	<	assertTrue((p = lock.tryOptimisticRead()) != 0L);
674	<	lock.unlockRead(s);
711	<	assertTrue((p = lock.tryOptimisticRead()) != 0L);
712	<	} catch (InterruptedException ie) {
713	<	threadUnexpectedException(ie);
714	<	}
641	>	public void testValidateOptimistic() throws InterruptedException {
642	>	StampedLock lock = new StampedLock();
643	>	long s, p;
644	>	assertTrue((p = lock.tryOptimisticRead()) != 0L);
645	>	assertTrue(lock.validate(p));
646	>	assertTrue((s = lock.writeLock()) != 0L);
647	>	assertFalse((p = lock.tryOptimisticRead()) != 0L);
648	>	assertTrue(lock.validate(s));
649	>	lock.unlockWrite(s);
650	>	assertTrue((p = lock.tryOptimisticRead()) != 0L);
651	>	assertTrue(lock.validate(p));
652	>	assertTrue((s = lock.readLock()) != 0L);
653	>	assertTrue(lock.validate(s));
654	>	assertTrue((p = lock.tryOptimisticRead()) != 0L);
655	>	assertTrue(lock.validate(p));
656	>	lock.unlockRead(s);
657	>	assertTrue((s = lock.tryWriteLock()) != 0L);
658	>	assertTrue(lock.validate(s));
659	>	assertFalse((p = lock.tryOptimisticRead()) != 0L);
660	>	lock.unlockWrite(s);
661	>	assertTrue((s = lock.tryReadLock()) != 0L);
662	>	assertTrue(lock.validate(s));
663	>	assertTrue((p = lock.tryOptimisticRead()) != 0L);
664	>	lock.unlockRead(s);
665	>	assertTrue(lock.validate(p));
666	>	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
667	>	assertFalse((p = lock.tryOptimisticRead()) != 0L);
668	>	assertTrue(lock.validate(s));
669	>	lock.unlockWrite(s);
670	>	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
671	>	assertTrue(lock.validate(s));
672	>	assertTrue((p = lock.tryOptimisticRead()) != 0L);
673	>	lock.unlockRead(s);
674	>	assertTrue((p = lock.tryOptimisticRead()) != 0L);
675		}
676
677		/**
#	Line 732 | Line 692 | public class StampedLockTest extends JSR
692		* tryOptimisticRead stamp does not validate if a write lock
693		* intervenes in another thread
694		*/
695	<	public void testValidateOptimisticWriteLocked2() {
695	>	public void testValidateOptimisticWriteLocked2()
696	>	throws InterruptedException {
697		final CountDownLatch running = new CountDownLatch(1);
698		final StampedLock lock = new StampedLock();
699		long s, p;
700		assertTrue((p = lock.tryOptimisticRead()) != 0L);
701		Thread t = newStartedThread(new CheckedInterruptedRunnable() {
702	<	public void realRun() throws InterruptedException {
703	<	lock.writeLockInterruptibly();
704	<	running.countDown();
705	<	lock.writeLockInterruptibly();
706	<	}});
707	<	try {
708	<	running.await();
709	<	assertFalse(lock.validate(p));
710	<	assertFalse((p = lock.tryOptimisticRead()) != 0L);
711	<	t.interrupt();
712	<	awaitTermination(t);
752	<	} catch (InterruptedException ie) {
753	<	threadUnexpectedException(ie);
754	<	}
702	>	public void realRun() throws InterruptedException {
703	>	lock.writeLockInterruptibly();
704	>	running.countDown();
705	>	lock.writeLockInterruptibly();
706	>	}});
707	>
708	>	running.await();
709	>	assertFalse(lock.validate(p));
710	>	assertFalse((p = lock.tryOptimisticRead()) != 0L);
711	>	t.interrupt();
712	>	awaitTermination(t);
713		}
714
715		/**
716		* tryConvertToOptimisticRead succeeds and validates if successfully locked,
717		*/
718	<	public void testTryConvertToOptimisticRead() {
719	<	try {
720	<	StampedLock lock = new StampedLock();
721	<	long s, p;
722	<	s = 0L;
723	<	assertFalse((p = lock.tryConvertToOptimisticRead(s)) != 0L);
724	<	assertTrue((s = lock.tryOptimisticRead()) != 0L);
725	<	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
726	<	assertTrue((s = lock.writeLock()) != 0L);
727	<	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
728	<	assertTrue(lock.validate(p));
729	<	assertTrue((s = lock.readLock()) != 0L);
730	<	assertTrue(lock.validate(s));
731	<	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
732	<	assertTrue(lock.validate(p));
733	<	assertTrue((s = lock.tryWriteLock()) != 0L);
734	<	assertTrue(lock.validate(s));
735	<	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
736	<	assertTrue(lock.validate(p));
737	<	assertTrue((s = lock.tryReadLock()) != 0L);
738	<	assertTrue(lock.validate(s));
739	<	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
740	<	assertTrue(lock.validate(p));
741	<	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
742	<	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
743	<	assertTrue(lock.validate(p));
744	<	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
745	<	assertTrue(lock.validate(s));
746	<	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
747	<	assertTrue(lock.validate(p));
748	<	} catch (InterruptedException ie) {
749	<	threadUnexpectedException(ie);
750	<	}
718	>	public void testTryConvertToOptimisticRead() throws InterruptedException {
719	>	StampedLock lock = new StampedLock();
720	>	long s, p;
721	>	assertEquals(0L, lock.tryConvertToOptimisticRead(0L));
722	>
723	>	assertTrue((s = lock.tryOptimisticRead()) != 0L);
724	>	assertEquals(s, lock.tryConvertToOptimisticRead(s));
725	>	assertTrue(lock.validate(s));
726	>
727	>	assertTrue((p = lock.readLock()) != 0L);
728	>	assertTrue((s = lock.tryOptimisticRead()) != 0L);
729	>	assertEquals(s, lock.tryConvertToOptimisticRead(s));
730	>	assertTrue(lock.validate(s));
731	>	lock.unlockRead(p);
732	>
733	>	assertTrue((s = lock.writeLock()) != 0L);
734	>	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
735	>	assertTrue(lock.validate(p));
736	>
737	>	assertTrue((s = lock.readLock()) != 0L);
738	>	assertTrue(lock.validate(s));
739	>	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
740	>	assertTrue(lock.validate(p));
741	>
742	>	assertTrue((s = lock.tryWriteLock()) != 0L);
743	>	assertTrue(lock.validate(s));
744	>	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
745	>	assertTrue(lock.validate(p));
746	>
747	>	assertTrue((s = lock.tryReadLock()) != 0L);
748	>	assertTrue(lock.validate(s));
749	>	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
750	>	assertTrue(lock.validate(p));
751	>
752	>	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
753	>	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
754	>	assertTrue(lock.validate(p));
755	>
756	>	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
757	>	assertTrue(lock.validate(s));
758	>	assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L);
759	>	assertTrue(lock.validate(p));
760		}
761
762		/**
763		* tryConvertToReadLock succeeds and validates if successfully locked
764		* or lock free;
765		*/
766	<	public void testTryConvertToReadLock() {
767	<	try {
768	<	StampedLock lock = new StampedLock();
769	<	long s, p;
770	<	s = 0L;
771	<	assertFalse((p = lock.tryConvertToReadLock(s)) != 0L);
772	<	assertTrue((s = lock.tryOptimisticRead()) != 0L);
773	<	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
774	<	lock.unlockRead(p);
775	<	assertTrue((s = lock.writeLock()) != 0L);
776	<	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
777	<	assertTrue(lock.validate(p));
778	<	lock.unlockRead(p);
779	<	assertTrue((s = lock.readLock()) != 0L);
780	<	assertTrue(lock.validate(s));
781	<	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
782	<	assertTrue(lock.validate(p));
783	<	lock.unlockRead(p);
784	<	assertTrue((s = lock.tryWriteLock()) != 0L);
785	<	assertTrue(lock.validate(s));
786	<	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
787	<	assertTrue(lock.validate(p));
788	<	lock.unlockRead(p);
789	<	assertTrue((s = lock.tryReadLock()) != 0L);
790	<	assertTrue(lock.validate(s));
791	<	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
792	<	assertTrue(lock.validate(p));
793	<	lock.unlockRead(p);
794	<	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
795	<	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
796	<	assertTrue(lock.validate(p));
797	<	lock.unlockRead(p);
798	<	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
799	<	assertTrue(lock.validate(s));
800	<	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
801	<	assertTrue(lock.validate(p));
802	<	lock.unlockRead(p);
803	<	} catch (InterruptedException ie) {
804	<	threadUnexpectedException(ie);
805	<	}
766	>	public void testTryConvertToReadLock() throws InterruptedException {
767	>	StampedLock lock = new StampedLock();
768	>	long s, p;
769	>
770	>	assertFalse((p = lock.tryConvertToReadLock(0L)) != 0L);
771	>
772	>	assertTrue((s = lock.tryOptimisticRead()) != 0L);
773	>	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
774	>	assertTrue(lock.isReadLocked());
775	>	assertEquals(1, lock.getReadLockCount());
776	>	lock.unlockRead(p);
777	>
778	>	assertTrue((s = lock.tryOptimisticRead()) != 0L);
779	>	lock.readLock();
780	>	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
781	>	assertTrue(lock.isReadLocked());
782	>	assertEquals(2, lock.getReadLockCount());
783	>	lock.unlockRead(p);
784	>	lock.unlockRead(p);
785	>
786	>	assertTrue((s = lock.writeLock()) != 0L);
787	>	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
788	>	assertTrue(lock.validate(p));
789	>	assertTrue(lock.isReadLocked());
790	>	assertEquals(1, lock.getReadLockCount());
791	>	lock.unlockRead(p);
792	>
793	>	assertTrue((s = lock.readLock()) != 0L);
794	>	assertTrue(lock.validate(s));
795	>	assertEquals(s, lock.tryConvertToReadLock(s));
796	>	assertTrue(lock.validate(s));
797	>	assertTrue(lock.isReadLocked());
798	>	assertEquals(1, lock.getReadLockCount());
799	>	lock.unlockRead(s);
800	>
801	>	assertTrue((s = lock.tryWriteLock()) != 0L);
802	>	assertTrue(lock.validate(s));
803	>	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
804	>	assertTrue(lock.validate(p));
805	>	assertEquals(1, lock.getReadLockCount());
806	>	lock.unlockRead(p);
807	>
808	>	assertTrue((s = lock.tryReadLock()) != 0L);
809	>	assertTrue(lock.validate(s));
810	>	assertEquals(s, lock.tryConvertToReadLock(s));
811	>	assertTrue(lock.validate(s));
812	>	assertTrue(lock.isReadLocked());
813	>	assertEquals(1, lock.getReadLockCount());
814	>	lock.unlockRead(s);
815	>
816	>	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
817	>	assertTrue((p = lock.tryConvertToReadLock(s)) != 0L);
818	>	assertTrue(lock.validate(p));
819	>	assertTrue(lock.isReadLocked());
820	>	assertEquals(1, lock.getReadLockCount());
821	>	lock.unlockRead(p);
822	>
823	>	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
824	>	assertTrue(lock.validate(s));
825	>	assertEquals(s, lock.tryConvertToReadLock(s));
826	>	assertTrue(lock.validate(s));
827	>	assertTrue(lock.isReadLocked());
828	>	assertEquals(1, lock.getReadLockCount());
829	>	lock.unlockRead(s);
830		}
831
832		/**
833		* tryConvertToWriteLock succeeds and validates if successfully locked
834		* or lock free;
835		*/
836	<	public void testTryConvertToWriteLock() {
837	<	try {
838	<	StampedLock lock = new StampedLock();
839	<	long s, p;
840	<	s = 0L;
841	<	assertFalse((p = lock.tryConvertToWriteLock(s)) != 0L);
842	<	assertTrue((s = lock.tryOptimisticRead()) != 0L);
843	<	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
844	<	lock.unlockWrite(p);
845	<	assertTrue((s = lock.writeLock()) != 0L);
846	<	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
847	<	assertTrue(lock.validate(p));
848	<	lock.unlockWrite(p);
849	<	assertTrue((s = lock.readLock()) != 0L);
850	<	assertTrue(lock.validate(s));
851	<	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
852	<	assertTrue(lock.validate(p));
853	<	lock.unlockWrite(p);
854	<	assertTrue((s = lock.tryWriteLock()) != 0L);
855	<	assertTrue(lock.validate(s));
856	<	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
857	<	assertTrue(lock.validate(p));
858	<	lock.unlockWrite(p);
859	<	assertTrue((s = lock.tryReadLock()) != 0L);
860	<	assertTrue(lock.validate(s));
861	<	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
862	<	assertTrue(lock.validate(p));
863	<	lock.unlockWrite(p);
864	<	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
865	<	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
866	<	assertTrue(lock.validate(p));
867	<	lock.unlockWrite(p);
868	<	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
869	<	assertTrue(lock.validate(s));
870	<	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
871	<	assertTrue(lock.validate(p));
872	<	lock.unlockWrite(p);
873	<	} catch (InterruptedException ie) {
874	<	threadUnexpectedException(ie);
875	<	}
836	>	public void testTryConvertToWriteLock() throws InterruptedException {
837	>	StampedLock lock = new StampedLock();
838	>	long s, p;
839	>
840	>	assertFalse((p = lock.tryConvertToWriteLock(0L)) != 0L);
841	>
842	>	assertTrue((s = lock.tryOptimisticRead()) != 0L);
843	>	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
844	>	assertTrue(lock.isWriteLocked());
845	>	lock.unlockWrite(p);
846	>
847	>	assertTrue((s = lock.writeLock()) != 0L);
848	>	assertEquals(s, lock.tryConvertToWriteLock(s));
849	>	assertTrue(lock.validate(s));
850	>	assertTrue(lock.isWriteLocked());
851	>	lock.unlockWrite(s);
852	>
853	>	assertTrue((s = lock.readLock()) != 0L);
854	>	assertTrue(lock.validate(s));
855	>	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
856	>	assertTrue(lock.validate(p));
857	>	assertTrue(lock.isWriteLocked());
858	>	lock.unlockWrite(p);
859	>
860	>	assertTrue((s = lock.tryWriteLock()) != 0L);
861	>	assertTrue(lock.validate(s));
862	>	assertEquals(s, lock.tryConvertToWriteLock(s));
863	>	assertTrue(lock.validate(s));
864	>	assertTrue(lock.isWriteLocked());
865	>	lock.unlockWrite(s);
866	>
867	>	assertTrue((s = lock.tryReadLock()) != 0L);
868	>	assertTrue(lock.validate(s));
869	>	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
870	>	assertTrue(lock.validate(p));
871	>	assertTrue(lock.isWriteLocked());
872	>	lock.unlockWrite(p);
873	>
874	>	assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L);
875	>	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
876	>	assertTrue(lock.validate(p));
877	>	assertTrue(lock.isWriteLocked());
878	>	lock.unlockWrite(p);
879	>
880	>	assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L);
881	>	assertTrue(lock.validate(s));
882	>	assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L);
883	>	assertTrue(lock.validate(p));
884	>	assertTrue(lock.isWriteLocked());
885	>	lock.unlockWrite(p);
886		}
887
888		/**
#	Line 930 | Line 931 | public class StampedLockTest extends JSR
931		assertTrue(lock.tryLock());
932		}
933
934	+	/**
935	+	* Lock.newCondition throws UnsupportedOperationException
936	+	*/
937	+	public void testLockViewsDoNotSupportConditions() {
938	+	StampedLock sl = new StampedLock();
939	+	assertThrows(UnsupportedOperationException.class,
940	+	() -> sl.asWriteLock().newCondition(),
941	+	() -> sl.asReadLock().newCondition(),
942	+	() -> sl.asReadWriteLock().writeLock().newCondition(),
943	+	() -> sl.asReadWriteLock().readLock().newCondition());
944	+	}
945	+
946	+	/**
947	+	* Passing optimistic read stamps to unlock operations result in
948	+	* IllegalMonitorStateException
949	+	*/
950	+	public void testCannotUnlockOptimisticReadStamps() {
951	+	Runnable[] actions = {
952	+	() -> {
953	+	StampedLock sl = new StampedLock();
954	+	long stamp = sl.tryOptimisticRead();
955	+	assertTrue(stamp != 0);
956	+	sl.unlockRead(stamp);
957	+	},
958	+	() -> {
959	+	StampedLock sl = new StampedLock();
960	+	long stamp = sl.tryOptimisticRead();
961	+	sl.unlock(stamp);
962	+	},
963	+
964	+	() -> {
965	+	StampedLock sl = new StampedLock();
966	+	long stamp = sl.tryOptimisticRead();
967	+	sl.writeLock();
968	+	sl.unlock(stamp);
969	+	},
970	+	() -> {
971	+	StampedLock sl = new StampedLock();
972	+	long stamp = sl.tryOptimisticRead();
973	+	sl.readLock();
974	+	sl.unlockRead(stamp);
975	+	},
976	+	() -> {
977	+	StampedLock sl = new StampedLock();
978	+	long stamp = sl.tryOptimisticRead();
979	+	sl.readLock();
980	+	sl.unlock(stamp);
981	+	},
982	+
983	+	() -> {
984	+	StampedLock sl = new StampedLock();
985	+	long stamp = sl.tryConvertToOptimisticRead(sl.writeLock());
986	+	assertTrue(stamp != 0);
987	+	sl.writeLock();
988	+	sl.unlockWrite(stamp);
989	+	},
990	+	() -> {
991	+	StampedLock sl = new StampedLock();
992	+	long stamp = sl.tryConvertToOptimisticRead(sl.writeLock());
993	+	sl.writeLock();
994	+	sl.unlock(stamp);
995	+	},
996	+	() -> {
997	+	StampedLock sl = new StampedLock();
998	+	long stamp = sl.tryConvertToOptimisticRead(sl.writeLock());
999	+	sl.readLock();
1000	+	sl.unlockRead(stamp);
1001	+	},
1002	+	() -> {
1003	+	StampedLock sl = new StampedLock();
1004	+	long stamp = sl.tryConvertToOptimisticRead(sl.writeLock());
1005	+	sl.readLock();
1006	+	sl.unlock(stamp);
1007	+	},
1008	+
1009	+	() -> {
1010	+	StampedLock sl = new StampedLock();
1011	+	long stamp = sl.tryConvertToOptimisticRead(sl.readLock());
1012	+	assertTrue(stamp != 0);
1013	+	sl.writeLock();
1014	+	sl.unlockWrite(stamp);
1015	+	},
1016	+	() -> {
1017	+	StampedLock sl = new StampedLock();
1018	+	long stamp = sl.tryConvertToOptimisticRead(sl.readLock());
1019	+	sl.writeLock();
1020	+	sl.unlock(stamp);
1021	+	},
1022	+	() -> {
1023	+	StampedLock sl = new StampedLock();
1024	+	long stamp = sl.tryConvertToOptimisticRead(sl.readLock());
1025	+	sl.readLock();
1026	+	sl.unlockRead(stamp);
1027	+	},
1028	+	() -> {
1029	+	StampedLock sl = new StampedLock();
1030	+	sl.readLock();
1031	+	long stamp = sl.tryConvertToOptimisticRead(sl.readLock());
1032	+	assertTrue(stamp != 0);
1033	+	sl.readLock();
1034	+	sl.unlockRead(stamp);
1035	+	},
1036	+	() -> {
1037	+	StampedLock sl = new StampedLock();
1038	+	long stamp = sl.tryConvertToOptimisticRead(sl.readLock());
1039	+	sl.readLock();
1040	+	sl.unlock(stamp);
1041	+	},
1042	+	() -> {
1043	+	StampedLock sl = new StampedLock();
1044	+	sl.readLock();
1045	+	long stamp = sl.tryConvertToOptimisticRead(sl.readLock());
1046	+	sl.readLock();
1047	+	sl.unlock(stamp);
1048	+	},
1049	+	};
1050	+
1051	+	assertThrows(IllegalMonitorStateException.class, actions);
1052	+	}
1053	+
1054		}

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