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); |
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) {} |
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) {} |
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) {} |
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) {} |
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(); |
285 |
|
running.countDown(); |
286 |
|
lock.writeLockInterruptibly(); |
287 |
|
}}); |
288 |
< |
try { |
289 |
< |
running.await(); Thread.sleep(SHORT_DELAY_MS); |
290 |
< |
t.interrupt(); |
291 |
< |
awaitTermination(t); |
292 |
< |
releaseWriteLock(lock, s); |
293 |
< |
} catch (InterruptedException ie) { |
301 |
< |
threadUnexpectedException(ie); |
302 |
< |
} |
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(); |
305 |
|
running.countDown(); |
306 |
|
lock.tryWriteLock(2 * LONG_DELAY_MS, MILLISECONDS); |
307 |
|
}}); |
308 |
< |
try { |
309 |
< |
running.await(); Thread.sleep(SHORT_DELAY_MS); |
310 |
< |
t.interrupt(); |
311 |
< |
awaitTermination(t); |
312 |
< |
releaseWriteLock(lock, s); |
313 |
< |
} catch (InterruptedException ie) { |
323 |
< |
threadUnexpectedException(ie); |
324 |
< |
} |
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(); |
326 |
|
running.countDown(); |
327 |
|
lock.readLockInterruptibly(); |
328 |
|
}}); |
329 |
< |
try { |
330 |
< |
running.await(); Thread.sleep(SHORT_DELAY_MS); |
331 |
< |
t.interrupt(); |
332 |
< |
awaitTermination(t); |
333 |
< |
releaseWriteLock(lock, s); |
334 |
< |
} catch (InterruptedException ie) { |
345 |
< |
threadUnexpectedException(ie); |
346 |
< |
} |
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(); |
346 |
|
running.countDown(); |
347 |
|
lock.tryReadLock(2 * LONG_DELAY_MS, MILLISECONDS); |
348 |
|
}}); |
349 |
< |
try { |
350 |
< |
running.await(); Thread.sleep(SHORT_DELAY_MS); |
351 |
< |
t.interrupt(); |
352 |
< |
awaitTermination(t); |
353 |
< |
releaseWriteLock(lock, s); |
354 |
< |
} catch (InterruptedException ie) { |
367 |
< |
threadUnexpectedException(ie); |
368 |
< |
} |
349 |
> |
|
350 |
> |
running.await(); |
351 |
> |
waitForThreadToEnterWaitState(t, 100); |
352 |
> |
t.interrupt(); |
353 |
> |
awaitTermination(t); |
354 |
> |
releaseWriteLock(lock, s); |
355 |
|
} |
356 |
|
|
357 |
|
/** |
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(); |
434 |
|
long s = lock.writeLock(); |
435 |
|
lock.unlockWrite(s); |
436 |
|
}}); |
437 |
< |
try { |
438 |
< |
running.await(); Thread.sleep(SHORT_DELAY_MS); |
439 |
< |
assertFalse(lock.isWriteLocked()); |
440 |
< |
lock.unlockRead(rs); |
441 |
< |
awaitTermination(t); |
442 |
< |
assertFalse(lock.isWriteLocked()); |
443 |
< |
} catch (InterruptedException ie) { |
458 |
< |
threadUnexpectedException(ie); |
459 |
< |
} |
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 |
|
/** |
454 |
|
long rs = lock.readLock(); |
455 |
|
lock.unlockRead(rs); |
456 |
|
}}); |
457 |
+ |
|
458 |
|
awaitTermination(t1); |
459 |
|
|
460 |
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
462 |
|
long ws = lock.writeLock(); |
463 |
|
lock.unlockWrite(ws); |
464 |
|
}}); |
465 |
+ |
|
466 |
|
assertFalse(lock.isWriteLocked()); |
467 |
|
lock.unlockRead(s); |
468 |
|
awaitTermination(t2); |
557 |
|
assertEquals(rs, 0L); |
558 |
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
559 |
|
}}); |
560 |
< |
|
560 |
> |
|
561 |
|
awaitTermination(t); |
562 |
|
assertTrue(lock.isWriteLocked()); |
563 |
|
lock.unlockWrite(s); |
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; |
587 |
< |
try { |
588 |
< |
s = lock.writeLockInterruptibly(); |
589 |
< |
} catch (InterruptedException ie) { |
590 |
< |
threadUnexpectedException(ie); |
591 |
< |
} |
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(); Thread.sleep(SHORT_DELAY_MS); |
581 |
< |
t.interrupt(); |
582 |
< |
assertTrue(lock.isWriteLocked()); |
583 |
< |
awaitTermination(t); |
584 |
< |
releaseWriteLock(lock, s); |
604 |
< |
} catch (InterruptedException ie) { |
605 |
< |
threadUnexpectedException(ie); |
606 |
< |
} |
607 |
< |
|
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); |
620 |
< |
s = lock.writeLockInterruptibly(); |
621 |
< |
} catch (InterruptedException ie) { |
622 |
< |
threadUnexpectedException(ie); |
623 |
< |
} |
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(); Thread.sleep(SHORT_DELAY_MS); |
604 |
< |
t.interrupt(); |
605 |
< |
awaitTermination(t); |
606 |
< |
releaseWriteLock(lock, s); |
607 |
< |
} catch (InterruptedException ie) { |
635 |
< |
threadUnexpectedException(ie); |
636 |
< |
} |
602 |
> |
|
603 |
> |
running.await(); |
604 |
> |
waitForThreadToEnterWaitState(t, 100); |
605 |
> |
t.interrupt(); |
606 |
> |
awaitTermination(t); |
607 |
> |
releaseWriteLock(lock, s); |
608 |
|
} |
609 |
|
|
610 |
|
/** |
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); |
704 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
705 |
< |
} catch (InterruptedException ie) { |
706 |
< |
threadUnexpectedException(ie); |
707 |
< |
} |
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 |
|
/** |
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); |
745 |
< |
} catch (InterruptedException ie) { |
746 |
< |
threadUnexpectedException(ie); |
747 |
< |
} |
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); |
782 |
< |
assertTrue(lock.validate(p)); |
783 |
< |
} catch (InterruptedException ie) { |
784 |
< |
threadUnexpectedException(ie); |
785 |
< |
} |
718 |
> |
public void testTryConvertToOptimisticRead() throws InterruptedException { |
719 |
> |
StampedLock lock = new StampedLock(); |
720 |
> |
long s, p; |
721 |
> |
s = 0L; |
722 |
> |
assertFalse((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
723 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
724 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
725 |
> |
assertTrue((s = lock.writeLock()) != 0L); |
726 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
727 |
> |
assertTrue(lock.validate(p)); |
728 |
> |
assertTrue((s = lock.readLock()) != 0L); |
729 |
> |
assertTrue(lock.validate(s)); |
730 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
731 |
> |
assertTrue(lock.validate(p)); |
732 |
> |
assertTrue((s = lock.tryWriteLock()) != 0L); |
733 |
> |
assertTrue(lock.validate(s)); |
734 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
735 |
> |
assertTrue(lock.validate(p)); |
736 |
> |
assertTrue((s = lock.tryReadLock()) != 0L); |
737 |
> |
assertTrue(lock.validate(s)); |
738 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
739 |
> |
assertTrue(lock.validate(p)); |
740 |
> |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
741 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
742 |
> |
assertTrue(lock.validate(p)); |
743 |
> |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
744 |
> |
assertTrue(lock.validate(s)); |
745 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
746 |
> |
assertTrue(lock.validate(p)); |
747 |
|
} |
748 |
|
|
749 |
|
/** |
750 |
|
* tryConvertToReadLock succeeds and validates if successfully locked |
751 |
|
* or lock free; |
752 |
|
*/ |
753 |
< |
public void testTryConvertToReadLock() { |
754 |
< |
try { |
755 |
< |
StampedLock lock = new StampedLock(); |
756 |
< |
long s, p; |
757 |
< |
s = 0L; |
758 |
< |
assertFalse((p = lock.tryConvertToReadLock(s)) != 0L); |
759 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
760 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
761 |
< |
lock.unlockRead(p); |
762 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
763 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
764 |
< |
assertTrue(lock.validate(p)); |
765 |
< |
lock.unlockRead(p); |
766 |
< |
assertTrue((s = lock.readLock()) != 0L); |
767 |
< |
assertTrue(lock.validate(s)); |
768 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
769 |
< |
assertTrue(lock.validate(p)); |
770 |
< |
lock.unlockRead(p); |
771 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
772 |
< |
assertTrue(lock.validate(s)); |
773 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
774 |
< |
assertTrue(lock.validate(p)); |
775 |
< |
lock.unlockRead(p); |
776 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
777 |
< |
assertTrue(lock.validate(s)); |
778 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
779 |
< |
assertTrue(lock.validate(p)); |
780 |
< |
lock.unlockRead(p); |
781 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
782 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
783 |
< |
assertTrue(lock.validate(p)); |
784 |
< |
lock.unlockRead(p); |
785 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
786 |
< |
assertTrue(lock.validate(s)); |
787 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
788 |
< |
assertTrue(lock.validate(p)); |
828 |
< |
lock.unlockRead(p); |
829 |
< |
} catch (InterruptedException ie) { |
830 |
< |
threadUnexpectedException(ie); |
831 |
< |
} |
753 |
> |
public void testTryConvertToReadLock() throws InterruptedException { |
754 |
> |
StampedLock lock = new StampedLock(); |
755 |
> |
long s, p; |
756 |
> |
s = 0L; |
757 |
> |
assertFalse((p = lock.tryConvertToReadLock(s)) != 0L); |
758 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
759 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
760 |
> |
lock.unlockRead(p); |
761 |
> |
assertTrue((s = lock.writeLock()) != 0L); |
762 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
763 |
> |
assertTrue(lock.validate(p)); |
764 |
> |
lock.unlockRead(p); |
765 |
> |
assertTrue((s = lock.readLock()) != 0L); |
766 |
> |
assertTrue(lock.validate(s)); |
767 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
768 |
> |
assertTrue(lock.validate(p)); |
769 |
> |
lock.unlockRead(p); |
770 |
> |
assertTrue((s = lock.tryWriteLock()) != 0L); |
771 |
> |
assertTrue(lock.validate(s)); |
772 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
773 |
> |
assertTrue(lock.validate(p)); |
774 |
> |
lock.unlockRead(p); |
775 |
> |
assertTrue((s = lock.tryReadLock()) != 0L); |
776 |
> |
assertTrue(lock.validate(s)); |
777 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
778 |
> |
assertTrue(lock.validate(p)); |
779 |
> |
lock.unlockRead(p); |
780 |
> |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
781 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
782 |
> |
assertTrue(lock.validate(p)); |
783 |
> |
lock.unlockRead(p); |
784 |
> |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
785 |
> |
assertTrue(lock.validate(s)); |
786 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
787 |
> |
assertTrue(lock.validate(p)); |
788 |
> |
lock.unlockRead(p); |
789 |
|
} |
790 |
|
|
791 |
|
/** |
792 |
|
* tryConvertToWriteLock succeeds and validates if successfully locked |
793 |
|
* or lock free; |
794 |
|
*/ |
795 |
< |
public void testTryConvertToWriteLock() { |
796 |
< |
try { |
797 |
< |
StampedLock lock = new StampedLock(); |
798 |
< |
long s, p; |
799 |
< |
s = 0L; |
800 |
< |
assertFalse((p = lock.tryConvertToWriteLock(s)) != 0L); |
801 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
802 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
803 |
< |
lock.unlockWrite(p); |
804 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
805 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
806 |
< |
assertTrue(lock.validate(p)); |
807 |
< |
lock.unlockWrite(p); |
808 |
< |
assertTrue((s = lock.readLock()) != 0L); |
809 |
< |
assertTrue(lock.validate(s)); |
810 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
811 |
< |
assertTrue(lock.validate(p)); |
812 |
< |
lock.unlockWrite(p); |
813 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
814 |
< |
assertTrue(lock.validate(s)); |
815 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
816 |
< |
assertTrue(lock.validate(p)); |
817 |
< |
lock.unlockWrite(p); |
818 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
819 |
< |
assertTrue(lock.validate(s)); |
820 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
821 |
< |
assertTrue(lock.validate(p)); |
822 |
< |
lock.unlockWrite(p); |
823 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
824 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
825 |
< |
assertTrue(lock.validate(p)); |
826 |
< |
lock.unlockWrite(p); |
827 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
828 |
< |
assertTrue(lock.validate(s)); |
829 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
830 |
< |
assertTrue(lock.validate(p)); |
874 |
< |
lock.unlockWrite(p); |
875 |
< |
} catch (InterruptedException ie) { |
876 |
< |
threadUnexpectedException(ie); |
877 |
< |
} |
795 |
> |
public void testTryConvertToWriteLock() throws InterruptedException { |
796 |
> |
StampedLock lock = new StampedLock(); |
797 |
> |
long s, p; |
798 |
> |
s = 0L; |
799 |
> |
assertFalse((p = lock.tryConvertToWriteLock(s)) != 0L); |
800 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
801 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
802 |
> |
lock.unlockWrite(p); |
803 |
> |
assertTrue((s = lock.writeLock()) != 0L); |
804 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
805 |
> |
assertTrue(lock.validate(p)); |
806 |
> |
lock.unlockWrite(p); |
807 |
> |
assertTrue((s = lock.readLock()) != 0L); |
808 |
> |
assertTrue(lock.validate(s)); |
809 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
810 |
> |
assertTrue(lock.validate(p)); |
811 |
> |
lock.unlockWrite(p); |
812 |
> |
assertTrue((s = lock.tryWriteLock()) != 0L); |
813 |
> |
assertTrue(lock.validate(s)); |
814 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
815 |
> |
assertTrue(lock.validate(p)); |
816 |
> |
lock.unlockWrite(p); |
817 |
> |
assertTrue((s = lock.tryReadLock()) != 0L); |
818 |
> |
assertTrue(lock.validate(s)); |
819 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
820 |
> |
assertTrue(lock.validate(p)); |
821 |
> |
lock.unlockWrite(p); |
822 |
> |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
823 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
824 |
> |
assertTrue(lock.validate(p)); |
825 |
> |
lock.unlockWrite(p); |
826 |
> |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
827 |
> |
assertTrue(lock.validate(s)); |
828 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
829 |
> |
assertTrue(lock.validate(p)); |
830 |
> |
lock.unlockWrite(p); |
831 |
|
} |
832 |
|
|
833 |
|
/** |