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.DAYS; |
9 |
> |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
> |
|
11 |
> |
import java.util.ArrayList; |
12 |
> |
import java.util.List; |
13 |
> |
import java.util.concurrent.CountDownLatch; |
14 |
> |
import java.util.concurrent.TimeUnit; |
15 |
|
import java.util.concurrent.locks.Lock; |
16 |
|
import java.util.concurrent.locks.StampedLock; |
17 |
< |
import java.util.concurrent.CountDownLatch; |
18 |
< |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
19 |
< |
import java.util.*; |
20 |
< |
import java.util.concurrent.*; |
17 |
> |
import java.util.function.BiConsumer; |
18 |
> |
import java.util.function.Consumer; |
19 |
> |
import java.util.function.Function; |
20 |
> |
|
21 |
> |
import junit.framework.Test; |
22 |
> |
import junit.framework.TestSuite; |
23 |
|
|
24 |
|
public class StampedLockTest 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(StampedLockTest.class); |
173 |
|
*/ |
174 |
|
public void testWriteUnlock_IMSE2() { |
175 |
|
StampedLock lock = new StampedLock(); |
176 |
+ |
long s = lock.writeLock(); |
177 |
+ |
lock.unlockWrite(s); |
178 |
|
try { |
170 |
– |
long s = lock.writeLock(); |
171 |
– |
lock.unlockWrite(s); |
179 |
|
lock.unlockWrite(s); |
180 |
|
shouldThrow(); |
181 |
|
} catch (IllegalMonitorStateException success) {} |
186 |
|
*/ |
187 |
|
public void testWriteUnlock_IMSE3() { |
188 |
|
StampedLock lock = new StampedLock(); |
189 |
+ |
long s = lock.readLock(); |
190 |
|
try { |
183 |
– |
long s = lock.readLock(); |
191 |
|
lock.unlockWrite(s); |
192 |
|
shouldThrow(); |
193 |
|
} catch (IllegalMonitorStateException success) {} |
198 |
|
*/ |
199 |
|
public void testReadUnlock_IMSE() { |
200 |
|
StampedLock lock = new StampedLock(); |
201 |
+ |
long s = lock.readLock(); |
202 |
+ |
lock.unlockRead(s); |
203 |
|
try { |
195 |
– |
long s = lock.readLock(); |
196 |
– |
lock.unlockRead(s); |
204 |
|
lock.unlockRead(s); |
205 |
|
shouldThrow(); |
206 |
|
} catch (IllegalMonitorStateException success) {} |
222 |
|
*/ |
223 |
|
public void testReadUnlock_IMSE3() { |
224 |
|
StampedLock lock = new StampedLock(); |
225 |
+ |
long s = lock.writeLock(); |
226 |
|
try { |
219 |
– |
long s = lock.writeLock(); |
227 |
|
lock.unlockRead(s); |
228 |
|
shouldThrow(); |
229 |
|
} catch (IllegalMonitorStateException success) {} |
240 |
|
/** |
241 |
|
* A stamp obtained from a successful lock operation validates |
242 |
|
*/ |
243 |
< |
public void testValidate() { |
244 |
< |
try { |
245 |
< |
StampedLock lock = new StampedLock(); |
246 |
< |
long s = lock.writeLock(); |
247 |
< |
assertTrue(lock.validate(s)); |
248 |
< |
lock.unlockWrite(s); |
249 |
< |
s = lock.readLock(); |
250 |
< |
assertTrue(lock.validate(s)); |
251 |
< |
lock.unlockRead(s); |
252 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
253 |
< |
assertTrue(lock.validate(s)); |
254 |
< |
lock.unlockWrite(s); |
255 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
256 |
< |
assertTrue(lock.validate(s)); |
257 |
< |
lock.unlockRead(s); |
258 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
259 |
< |
assertTrue(lock.validate(s)); |
260 |
< |
lock.unlockWrite(s); |
261 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
262 |
< |
assertTrue(lock.validate(s)); |
263 |
< |
lock.unlockRead(s); |
257 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
258 |
< |
} catch (InterruptedException ie) { |
259 |
< |
threadUnexpectedException(ie); |
260 |
< |
} |
243 |
> |
public void testValidate() throws InterruptedException { |
244 |
> |
StampedLock lock = new StampedLock(); |
245 |
> |
long s = lock.writeLock(); |
246 |
> |
assertTrue(lock.validate(s)); |
247 |
> |
lock.unlockWrite(s); |
248 |
> |
s = lock.readLock(); |
249 |
> |
assertTrue(lock.validate(s)); |
250 |
> |
lock.unlockRead(s); |
251 |
> |
assertTrue((s = lock.tryWriteLock()) != 0L); |
252 |
> |
assertTrue(lock.validate(s)); |
253 |
> |
lock.unlockWrite(s); |
254 |
> |
assertTrue((s = lock.tryReadLock()) != 0L); |
255 |
> |
assertTrue(lock.validate(s)); |
256 |
> |
lock.unlockRead(s); |
257 |
> |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
258 |
> |
assertTrue(lock.validate(s)); |
259 |
> |
lock.unlockWrite(s); |
260 |
> |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
261 |
> |
assertTrue(lock.validate(s)); |
262 |
> |
lock.unlockRead(s); |
263 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
264 |
|
} |
265 |
|
|
266 |
|
/** |
267 |
|
* A stamp obtained from an unsuccessful lock operation does not validate |
268 |
|
*/ |
269 |
< |
public void testValidate2() { |
270 |
< |
try { |
271 |
< |
StampedLock lock = new StampedLock(); |
272 |
< |
long s; |
273 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
274 |
< |
assertTrue(lock.validate(s)); |
275 |
< |
assertFalse(lock.validate(lock.tryWriteLock())); |
276 |
< |
assertFalse(lock.validate(lock.tryWriteLock(100L, MILLISECONDS))); |
277 |
< |
assertFalse(lock.validate(lock.tryReadLock())); |
278 |
< |
assertFalse(lock.validate(lock.tryReadLock(100L, MILLISECONDS))); |
279 |
< |
assertFalse(lock.validate(lock.tryOptimisticRead())); |
277 |
< |
lock.unlockWrite(s); |
278 |
< |
} catch (InterruptedException ie) { |
279 |
< |
threadUnexpectedException(ie); |
280 |
< |
} |
269 |
> |
public void testValidate2() throws InterruptedException { |
270 |
> |
StampedLock lock = new StampedLock(); |
271 |
> |
long s; |
272 |
> |
assertTrue((s = lock.writeLock()) != 0L); |
273 |
> |
assertTrue(lock.validate(s)); |
274 |
> |
assertFalse(lock.validate(lock.tryWriteLock())); |
275 |
> |
assertFalse(lock.validate(lock.tryWriteLock(10L, MILLISECONDS))); |
276 |
> |
assertFalse(lock.validate(lock.tryReadLock())); |
277 |
> |
assertFalse(lock.validate(lock.tryReadLock(10L, MILLISECONDS))); |
278 |
> |
assertFalse(lock.validate(lock.tryOptimisticRead())); |
279 |
> |
lock.unlockWrite(s); |
280 |
|
} |
281 |
|
|
282 |
|
/** |
283 |
|
* writeLockInterruptibly is interruptible |
284 |
|
*/ |
285 |
< |
public void testWriteLockInterruptibly_Interruptible() { |
285 |
> |
public void testWriteLockInterruptibly_Interruptible() |
286 |
> |
throws InterruptedException { |
287 |
|
final CountDownLatch running = new CountDownLatch(1); |
288 |
|
final StampedLock lock = new StampedLock(); |
289 |
|
long s = lock.writeLock(); |
292 |
|
running.countDown(); |
293 |
|
lock.writeLockInterruptibly(); |
294 |
|
}}); |
295 |
< |
try { |
296 |
< |
running.await(); |
297 |
< |
waitForThreadToEnterWaitState(t, 100); |
298 |
< |
t.interrupt(); |
299 |
< |
awaitTermination(t); |
300 |
< |
releaseWriteLock(lock, s); |
301 |
< |
} catch (InterruptedException ie) { |
302 |
< |
threadUnexpectedException(ie); |
303 |
< |
} |
295 |
> |
|
296 |
> |
running.await(); |
297 |
> |
waitForThreadToEnterWaitState(t, 100); |
298 |
> |
t.interrupt(); |
299 |
> |
awaitTermination(t); |
300 |
> |
releaseWriteLock(lock, s); |
301 |
|
} |
302 |
|
|
303 |
|
/** |
304 |
|
* timed tryWriteLock is interruptible |
305 |
|
*/ |
306 |
< |
public void testWriteTryLock_Interruptible() { |
306 |
> |
public void testWriteTryLock_Interruptible() throws InterruptedException { |
307 |
|
final CountDownLatch running = new CountDownLatch(1); |
308 |
|
final StampedLock lock = new StampedLock(); |
309 |
|
long s = lock.writeLock(); |
312 |
|
running.countDown(); |
313 |
|
lock.tryWriteLock(2 * LONG_DELAY_MS, MILLISECONDS); |
314 |
|
}}); |
315 |
< |
try { |
316 |
< |
running.await(); |
317 |
< |
waitForThreadToEnterWaitState(t, 100); |
318 |
< |
t.interrupt(); |
319 |
< |
awaitTermination(t); |
320 |
< |
releaseWriteLock(lock, s); |
324 |
< |
} catch (InterruptedException ie) { |
325 |
< |
threadUnexpectedException(ie); |
326 |
< |
} |
315 |
> |
|
316 |
> |
running.await(); |
317 |
> |
waitForThreadToEnterWaitState(t, 100); |
318 |
> |
t.interrupt(); |
319 |
> |
awaitTermination(t); |
320 |
> |
releaseWriteLock(lock, s); |
321 |
|
} |
322 |
|
|
323 |
|
/** |
324 |
|
* readLockInterruptibly is interruptible |
325 |
|
*/ |
326 |
< |
public void testReadLockInterruptibly_Interruptible() { |
326 |
> |
public void testReadLockInterruptibly_Interruptible() |
327 |
> |
throws InterruptedException { |
328 |
|
final CountDownLatch running = new CountDownLatch(1); |
329 |
|
final StampedLock lock = new StampedLock(); |
330 |
|
long s = lock.writeLock(); |
333 |
|
running.countDown(); |
334 |
|
lock.readLockInterruptibly(); |
335 |
|
}}); |
336 |
< |
try { |
337 |
< |
running.await(); |
338 |
< |
waitForThreadToEnterWaitState(t, 100); |
339 |
< |
t.interrupt(); |
340 |
< |
awaitTermination(t); |
341 |
< |
releaseWriteLock(lock, s); |
347 |
< |
} catch (InterruptedException ie) { |
348 |
< |
threadUnexpectedException(ie); |
349 |
< |
} |
336 |
> |
|
337 |
> |
running.await(); |
338 |
> |
waitForThreadToEnterWaitState(t, 100); |
339 |
> |
t.interrupt(); |
340 |
> |
awaitTermination(t); |
341 |
> |
releaseWriteLock(lock, s); |
342 |
|
} |
343 |
|
|
344 |
|
/** |
345 |
|
* timed tryReadLock is interruptible |
346 |
|
*/ |
347 |
< |
public void testReadTryLock_Interruptible() { |
347 |
> |
public void testReadTryLock_Interruptible() throws InterruptedException { |
348 |
|
final CountDownLatch running = new CountDownLatch(1); |
349 |
|
final StampedLock lock = new StampedLock(); |
350 |
|
long s = lock.writeLock(); |
353 |
|
running.countDown(); |
354 |
|
lock.tryReadLock(2 * LONG_DELAY_MS, MILLISECONDS); |
355 |
|
}}); |
356 |
< |
try { |
357 |
< |
running.await(); |
358 |
< |
waitForThreadToEnterWaitState(t, 100); |
359 |
< |
t.interrupt(); |
360 |
< |
awaitTermination(t); |
361 |
< |
releaseWriteLock(lock, s); |
370 |
< |
} catch (InterruptedException ie) { |
371 |
< |
threadUnexpectedException(ie); |
372 |
< |
} |
356 |
> |
|
357 |
> |
running.await(); |
358 |
> |
waitForThreadToEnterWaitState(t, 100); |
359 |
> |
t.interrupt(); |
360 |
> |
awaitTermination(t); |
361 |
> |
releaseWriteLock(lock, s); |
362 |
|
} |
363 |
|
|
364 |
|
/** |
431 |
|
/** |
432 |
|
* A writelock succeeds only after a reading thread unlocks |
433 |
|
*/ |
434 |
< |
public void testWriteAfterReadLock() { |
434 |
> |
public void testWriteAfterReadLock() throws InterruptedException { |
435 |
|
final CountDownLatch running = new CountDownLatch(1); |
436 |
|
final StampedLock lock = new StampedLock(); |
437 |
|
long rs = lock.readLock(); |
441 |
|
long s = lock.writeLock(); |
442 |
|
lock.unlockWrite(s); |
443 |
|
}}); |
444 |
< |
try { |
445 |
< |
running.await(); |
446 |
< |
waitForThreadToEnterWaitState(t, 100); |
447 |
< |
assertFalse(lock.isWriteLocked()); |
448 |
< |
lock.unlockRead(rs); |
449 |
< |
awaitTermination(t); |
450 |
< |
assertFalse(lock.isWriteLocked()); |
462 |
< |
} catch (InterruptedException ie) { |
463 |
< |
threadUnexpectedException(ie); |
464 |
< |
} |
444 |
> |
|
445 |
> |
running.await(); |
446 |
> |
waitForThreadToEnterWaitState(t, 100); |
447 |
> |
assertFalse(lock.isWriteLocked()); |
448 |
> |
lock.unlockRead(rs); |
449 |
> |
awaitTermination(t); |
450 |
> |
assertFalse(lock.isWriteLocked()); |
451 |
|
} |
452 |
|
|
453 |
|
/** |
461 |
|
long rs = lock.readLock(); |
462 |
|
lock.unlockRead(rs); |
463 |
|
}}); |
464 |
+ |
|
465 |
|
awaitTermination(t1); |
466 |
|
|
467 |
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
469 |
|
long ws = lock.writeLock(); |
470 |
|
lock.unlockWrite(ws); |
471 |
|
}}); |
472 |
+ |
|
473 |
|
assertFalse(lock.isWriteLocked()); |
474 |
|
lock.unlockRead(s); |
475 |
|
awaitTermination(t2); |
573 |
|
/** |
574 |
|
* writeLockInterruptibly succeeds if unlocked, else is interruptible |
575 |
|
*/ |
576 |
< |
public void testWriteLockInterruptibly() { |
576 |
> |
public void testWriteLockInterruptibly() throws InterruptedException { |
577 |
|
final CountDownLatch running = new CountDownLatch(1); |
578 |
|
final StampedLock lock = new StampedLock(); |
579 |
< |
long s = 0L; |
592 |
< |
try { |
593 |
< |
s = lock.writeLockInterruptibly(); |
594 |
< |
} catch (InterruptedException ie) { |
595 |
< |
threadUnexpectedException(ie); |
596 |
< |
} |
579 |
> |
long s = lock.writeLockInterruptibly(); |
580 |
|
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
581 |
|
public void realRun() throws InterruptedException { |
582 |
|
running.countDown(); |
583 |
|
lock.writeLockInterruptibly(); |
584 |
|
}}); |
585 |
|
|
586 |
< |
try { |
587 |
< |
running.await(); |
588 |
< |
waitForThreadToEnterWaitState(t, 100); |
589 |
< |
t.interrupt(); |
590 |
< |
assertTrue(lock.isWriteLocked()); |
591 |
< |
awaitTermination(t); |
609 |
< |
releaseWriteLock(lock, s); |
610 |
< |
} catch (InterruptedException ie) { |
611 |
< |
threadUnexpectedException(ie); |
612 |
< |
} |
613 |
< |
|
586 |
> |
running.await(); |
587 |
> |
waitForThreadToEnterWaitState(t, 100); |
588 |
> |
t.interrupt(); |
589 |
> |
assertTrue(lock.isWriteLocked()); |
590 |
> |
awaitTermination(t); |
591 |
> |
releaseWriteLock(lock, s); |
592 |
|
} |
593 |
|
|
594 |
|
/** |
595 |
|
* readLockInterruptibly succeeds if lock free else is interruptible |
596 |
|
*/ |
597 |
< |
public void testReadLockInterruptibly() { |
597 |
> |
public void testReadLockInterruptibly() throws InterruptedException { |
598 |
|
final CountDownLatch running = new CountDownLatch(1); |
599 |
|
final StampedLock lock = new StampedLock(); |
600 |
< |
long s = 0L; |
601 |
< |
try { |
602 |
< |
s = lock.readLockInterruptibly(); |
603 |
< |
lock.unlockRead(s); |
626 |
< |
s = lock.writeLockInterruptibly(); |
627 |
< |
} catch (InterruptedException ie) { |
628 |
< |
threadUnexpectedException(ie); |
629 |
< |
} |
600 |
> |
long s; |
601 |
> |
s = lock.readLockInterruptibly(); |
602 |
> |
lock.unlockRead(s); |
603 |
> |
s = lock.writeLockInterruptibly(); |
604 |
|
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
605 |
|
public void realRun() throws InterruptedException { |
606 |
|
running.countDown(); |
607 |
|
lock.readLockInterruptibly(); |
608 |
|
}}); |
609 |
< |
try { |
610 |
< |
running.await(); |
611 |
< |
waitForThreadToEnterWaitState(t, 100); |
612 |
< |
t.interrupt(); |
613 |
< |
awaitTermination(t); |
614 |
< |
releaseWriteLock(lock, s); |
641 |
< |
} catch (InterruptedException ie) { |
642 |
< |
threadUnexpectedException(ie); |
643 |
< |
} |
609 |
> |
|
610 |
> |
running.await(); |
611 |
> |
waitForThreadToEnterWaitState(t, 100); |
612 |
> |
t.interrupt(); |
613 |
> |
awaitTermination(t); |
614 |
> |
releaseWriteLock(lock, s); |
615 |
|
} |
616 |
|
|
617 |
|
/** |
645 |
|
/** |
646 |
|
* tryOptimisticRead succeeds and validates if unlocked, fails if locked |
647 |
|
*/ |
648 |
< |
public void testValidateOptimistic() { |
649 |
< |
try { |
650 |
< |
StampedLock lock = new StampedLock(); |
651 |
< |
long s, p; |
652 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
653 |
< |
assertTrue(lock.validate(p)); |
654 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
655 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
656 |
< |
assertTrue(lock.validate(s)); |
657 |
< |
lock.unlockWrite(s); |
658 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
659 |
< |
assertTrue(lock.validate(p)); |
660 |
< |
assertTrue((s = lock.readLock()) != 0L); |
661 |
< |
assertTrue(lock.validate(s)); |
662 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
663 |
< |
assertTrue(lock.validate(p)); |
664 |
< |
lock.unlockRead(s); |
665 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
666 |
< |
assertTrue(lock.validate(s)); |
667 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
668 |
< |
lock.unlockWrite(s); |
669 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
670 |
< |
assertTrue(lock.validate(s)); |
671 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
672 |
< |
lock.unlockRead(s); |
673 |
< |
assertTrue(lock.validate(p)); |
674 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
675 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
676 |
< |
assertTrue(lock.validate(s)); |
677 |
< |
lock.unlockWrite(s); |
678 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
679 |
< |
assertTrue(lock.validate(s)); |
680 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
681 |
< |
lock.unlockRead(s); |
711 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
712 |
< |
} catch (InterruptedException ie) { |
713 |
< |
threadUnexpectedException(ie); |
714 |
< |
} |
648 |
> |
public void testValidateOptimistic() throws InterruptedException { |
649 |
> |
StampedLock lock = new StampedLock(); |
650 |
> |
long s, p; |
651 |
> |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
652 |
> |
assertTrue(lock.validate(p)); |
653 |
> |
assertTrue((s = lock.writeLock()) != 0L); |
654 |
> |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
655 |
> |
assertTrue(lock.validate(s)); |
656 |
> |
lock.unlockWrite(s); |
657 |
> |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
658 |
> |
assertTrue(lock.validate(p)); |
659 |
> |
assertTrue((s = lock.readLock()) != 0L); |
660 |
> |
assertTrue(lock.validate(s)); |
661 |
> |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
662 |
> |
assertTrue(lock.validate(p)); |
663 |
> |
lock.unlockRead(s); |
664 |
> |
assertTrue((s = lock.tryWriteLock()) != 0L); |
665 |
> |
assertTrue(lock.validate(s)); |
666 |
> |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
667 |
> |
lock.unlockWrite(s); |
668 |
> |
assertTrue((s = lock.tryReadLock()) != 0L); |
669 |
> |
assertTrue(lock.validate(s)); |
670 |
> |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
671 |
> |
lock.unlockRead(s); |
672 |
> |
assertTrue(lock.validate(p)); |
673 |
> |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
674 |
> |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
675 |
> |
assertTrue(lock.validate(s)); |
676 |
> |
lock.unlockWrite(s); |
677 |
> |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
678 |
> |
assertTrue(lock.validate(s)); |
679 |
> |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
680 |
> |
lock.unlockRead(s); |
681 |
> |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
682 |
|
} |
683 |
|
|
684 |
|
/** |
699 |
|
* tryOptimisticRead stamp does not validate if a write lock |
700 |
|
* intervenes in another thread |
701 |
|
*/ |
702 |
< |
public void testValidateOptimisticWriteLocked2() { |
702 |
> |
public void testValidateOptimisticWriteLocked2() |
703 |
> |
throws InterruptedException { |
704 |
|
final CountDownLatch running = new CountDownLatch(1); |
705 |
|
final StampedLock lock = new StampedLock(); |
706 |
|
long s, p; |
707 |
|
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
708 |
|
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
709 |
< |
public void realRun() throws InterruptedException { |
710 |
< |
lock.writeLockInterruptibly(); |
711 |
< |
running.countDown(); |
712 |
< |
lock.writeLockInterruptibly(); |
713 |
< |
}}); |
714 |
< |
try { |
715 |
< |
running.await(); |
716 |
< |
assertFalse(lock.validate(p)); |
717 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
718 |
< |
t.interrupt(); |
719 |
< |
awaitTermination(t); |
752 |
< |
} catch (InterruptedException ie) { |
753 |
< |
threadUnexpectedException(ie); |
754 |
< |
} |
709 |
> |
public void realRun() throws InterruptedException { |
710 |
> |
lock.writeLockInterruptibly(); |
711 |
> |
running.countDown(); |
712 |
> |
lock.writeLockInterruptibly(); |
713 |
> |
}}); |
714 |
> |
|
715 |
> |
running.await(); |
716 |
> |
assertFalse(lock.validate(p)); |
717 |
> |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
718 |
> |
t.interrupt(); |
719 |
> |
awaitTermination(t); |
720 |
|
} |
721 |
|
|
722 |
|
/** |
723 |
|
* tryConvertToOptimisticRead succeeds and validates if successfully locked, |
724 |
|
*/ |
725 |
< |
public void testTryConvertToOptimisticRead() { |
726 |
< |
try { |
727 |
< |
StampedLock lock = new StampedLock(); |
728 |
< |
long s, p; |
729 |
< |
s = 0L; |
730 |
< |
assertFalse((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
731 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
732 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
733 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
734 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
735 |
< |
assertTrue(lock.validate(p)); |
736 |
< |
assertTrue((s = lock.readLock()) != 0L); |
737 |
< |
assertTrue(lock.validate(s)); |
738 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
739 |
< |
assertTrue(lock.validate(p)); |
740 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
741 |
< |
assertTrue(lock.validate(s)); |
742 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
743 |
< |
assertTrue(lock.validate(p)); |
744 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
745 |
< |
assertTrue(lock.validate(s)); |
746 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
747 |
< |
assertTrue(lock.validate(p)); |
748 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
749 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
750 |
< |
assertTrue(lock.validate(p)); |
751 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
752 |
< |
assertTrue(lock.validate(s)); |
753 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
754 |
< |
assertTrue(lock.validate(p)); |
755 |
< |
} catch (InterruptedException ie) { |
756 |
< |
threadUnexpectedException(ie); |
757 |
< |
} |
725 |
> |
public void testTryConvertToOptimisticRead() throws InterruptedException { |
726 |
> |
StampedLock lock = new StampedLock(); |
727 |
> |
long s, p; |
728 |
> |
assertEquals(0L, lock.tryConvertToOptimisticRead(0L)); |
729 |
> |
|
730 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
731 |
> |
assertEquals(s, lock.tryConvertToOptimisticRead(s)); |
732 |
> |
assertTrue(lock.validate(s)); |
733 |
> |
|
734 |
> |
assertTrue((p = lock.readLock()) != 0L); |
735 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
736 |
> |
assertEquals(s, lock.tryConvertToOptimisticRead(s)); |
737 |
> |
assertTrue(lock.validate(s)); |
738 |
> |
lock.unlockRead(p); |
739 |
> |
|
740 |
> |
assertTrue((s = lock.writeLock()) != 0L); |
741 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
742 |
> |
assertTrue(lock.validate(p)); |
743 |
> |
|
744 |
> |
assertTrue((s = lock.readLock()) != 0L); |
745 |
> |
assertTrue(lock.validate(s)); |
746 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
747 |
> |
assertTrue(lock.validate(p)); |
748 |
> |
|
749 |
> |
assertTrue((s = lock.tryWriteLock()) != 0L); |
750 |
> |
assertTrue(lock.validate(s)); |
751 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
752 |
> |
assertTrue(lock.validate(p)); |
753 |
> |
|
754 |
> |
assertTrue((s = lock.tryReadLock()) != 0L); |
755 |
> |
assertTrue(lock.validate(s)); |
756 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
757 |
> |
assertTrue(lock.validate(p)); |
758 |
> |
|
759 |
> |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
760 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
761 |
> |
assertTrue(lock.validate(p)); |
762 |
> |
|
763 |
> |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
764 |
> |
assertTrue(lock.validate(s)); |
765 |
> |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
766 |
> |
assertTrue(lock.validate(p)); |
767 |
|
} |
768 |
|
|
769 |
|
/** |
770 |
|
* tryConvertToReadLock succeeds and validates if successfully locked |
771 |
|
* or lock free; |
772 |
|
*/ |
773 |
< |
public void testTryConvertToReadLock() { |
774 |
< |
try { |
775 |
< |
StampedLock lock = new StampedLock(); |
776 |
< |
long s, p; |
777 |
< |
s = 0L; |
778 |
< |
assertFalse((p = lock.tryConvertToReadLock(s)) != 0L); |
779 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
780 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
781 |
< |
lock.unlockRead(p); |
782 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
783 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
784 |
< |
assertTrue(lock.validate(p)); |
785 |
< |
lock.unlockRead(p); |
786 |
< |
assertTrue((s = lock.readLock()) != 0L); |
787 |
< |
assertTrue(lock.validate(s)); |
788 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
789 |
< |
assertTrue(lock.validate(p)); |
790 |
< |
lock.unlockRead(p); |
791 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
792 |
< |
assertTrue(lock.validate(s)); |
793 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
794 |
< |
assertTrue(lock.validate(p)); |
795 |
< |
lock.unlockRead(p); |
796 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
797 |
< |
assertTrue(lock.validate(s)); |
798 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
799 |
< |
assertTrue(lock.validate(p)); |
800 |
< |
lock.unlockRead(p); |
801 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
802 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
803 |
< |
assertTrue(lock.validate(p)); |
804 |
< |
lock.unlockRead(p); |
805 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
806 |
< |
assertTrue(lock.validate(s)); |
807 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
808 |
< |
assertTrue(lock.validate(p)); |
809 |
< |
lock.unlockRead(p); |
810 |
< |
} catch (InterruptedException ie) { |
811 |
< |
threadUnexpectedException(ie); |
812 |
< |
} |
773 |
> |
public void testTryConvertToReadLock() throws InterruptedException { |
774 |
> |
StampedLock lock = new StampedLock(); |
775 |
> |
long s, p; |
776 |
> |
|
777 |
> |
assertFalse((p = lock.tryConvertToReadLock(0L)) != 0L); |
778 |
> |
|
779 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
780 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
781 |
> |
assertTrue(lock.isReadLocked()); |
782 |
> |
assertEquals(1, lock.getReadLockCount()); |
783 |
> |
lock.unlockRead(p); |
784 |
> |
|
785 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
786 |
> |
lock.readLock(); |
787 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
788 |
> |
assertTrue(lock.isReadLocked()); |
789 |
> |
assertEquals(2, lock.getReadLockCount()); |
790 |
> |
lock.unlockRead(p); |
791 |
> |
lock.unlockRead(p); |
792 |
> |
|
793 |
> |
assertTrue((s = lock.writeLock()) != 0L); |
794 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
795 |
> |
assertTrue(lock.validate(p)); |
796 |
> |
assertTrue(lock.isReadLocked()); |
797 |
> |
assertEquals(1, lock.getReadLockCount()); |
798 |
> |
lock.unlockRead(p); |
799 |
> |
|
800 |
> |
assertTrue((s = lock.readLock()) != 0L); |
801 |
> |
assertTrue(lock.validate(s)); |
802 |
> |
assertEquals(s, lock.tryConvertToReadLock(s)); |
803 |
> |
assertTrue(lock.validate(s)); |
804 |
> |
assertTrue(lock.isReadLocked()); |
805 |
> |
assertEquals(1, lock.getReadLockCount()); |
806 |
> |
lock.unlockRead(s); |
807 |
> |
|
808 |
> |
assertTrue((s = lock.tryWriteLock()) != 0L); |
809 |
> |
assertTrue(lock.validate(s)); |
810 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
811 |
> |
assertTrue(lock.validate(p)); |
812 |
> |
assertEquals(1, lock.getReadLockCount()); |
813 |
> |
lock.unlockRead(p); |
814 |
> |
|
815 |
> |
assertTrue((s = lock.tryReadLock()) != 0L); |
816 |
> |
assertTrue(lock.validate(s)); |
817 |
> |
assertEquals(s, lock.tryConvertToReadLock(s)); |
818 |
> |
assertTrue(lock.validate(s)); |
819 |
> |
assertTrue(lock.isReadLocked()); |
820 |
> |
assertEquals(1, lock.getReadLockCount()); |
821 |
> |
lock.unlockRead(s); |
822 |
> |
|
823 |
> |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
824 |
> |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
825 |
> |
assertTrue(lock.validate(p)); |
826 |
> |
assertTrue(lock.isReadLocked()); |
827 |
> |
assertEquals(1, lock.getReadLockCount()); |
828 |
> |
lock.unlockRead(p); |
829 |
> |
|
830 |
> |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
831 |
> |
assertTrue(lock.validate(s)); |
832 |
> |
assertEquals(s, lock.tryConvertToReadLock(s)); |
833 |
> |
assertTrue(lock.validate(s)); |
834 |
> |
assertTrue(lock.isReadLocked()); |
835 |
> |
assertEquals(1, lock.getReadLockCount()); |
836 |
> |
lock.unlockRead(s); |
837 |
|
} |
838 |
|
|
839 |
|
/** |
840 |
|
* tryConvertToWriteLock succeeds and validates if successfully locked |
841 |
|
* or lock free; |
842 |
|
*/ |
843 |
< |
public void testTryConvertToWriteLock() { |
844 |
< |
try { |
845 |
< |
StampedLock lock = new StampedLock(); |
846 |
< |
long s, p; |
847 |
< |
s = 0L; |
848 |
< |
assertFalse((p = lock.tryConvertToWriteLock(s)) != 0L); |
849 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
850 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
851 |
< |
lock.unlockWrite(p); |
852 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
853 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
854 |
< |
assertTrue(lock.validate(p)); |
855 |
< |
lock.unlockWrite(p); |
856 |
< |
assertTrue((s = lock.readLock()) != 0L); |
857 |
< |
assertTrue(lock.validate(s)); |
858 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
859 |
< |
assertTrue(lock.validate(p)); |
860 |
< |
lock.unlockWrite(p); |
861 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
862 |
< |
assertTrue(lock.validate(s)); |
863 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
864 |
< |
assertTrue(lock.validate(p)); |
865 |
< |
lock.unlockWrite(p); |
866 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
867 |
< |
assertTrue(lock.validate(s)); |
868 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
869 |
< |
assertTrue(lock.validate(p)); |
870 |
< |
lock.unlockWrite(p); |
871 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
872 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
873 |
< |
assertTrue(lock.validate(p)); |
874 |
< |
lock.unlockWrite(p); |
875 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
876 |
< |
assertTrue(lock.validate(s)); |
877 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
878 |
< |
assertTrue(lock.validate(p)); |
879 |
< |
lock.unlockWrite(p); |
880 |
< |
} catch (InterruptedException ie) { |
881 |
< |
threadUnexpectedException(ie); |
882 |
< |
} |
843 |
> |
public void testTryConvertToWriteLock() throws InterruptedException { |
844 |
> |
StampedLock lock = new StampedLock(); |
845 |
> |
long s, p; |
846 |
> |
|
847 |
> |
assertFalse((p = lock.tryConvertToWriteLock(0L)) != 0L); |
848 |
> |
|
849 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
850 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
851 |
> |
assertTrue(lock.isWriteLocked()); |
852 |
> |
lock.unlockWrite(p); |
853 |
> |
|
854 |
> |
assertTrue((s = lock.writeLock()) != 0L); |
855 |
> |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
856 |
> |
assertTrue(lock.validate(s)); |
857 |
> |
assertTrue(lock.isWriteLocked()); |
858 |
> |
lock.unlockWrite(s); |
859 |
> |
|
860 |
> |
assertTrue((s = lock.readLock()) != 0L); |
861 |
> |
assertTrue(lock.validate(s)); |
862 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
863 |
> |
assertTrue(lock.validate(p)); |
864 |
> |
assertTrue(lock.isWriteLocked()); |
865 |
> |
lock.unlockWrite(p); |
866 |
> |
|
867 |
> |
assertTrue((s = lock.tryWriteLock()) != 0L); |
868 |
> |
assertTrue(lock.validate(s)); |
869 |
> |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
870 |
> |
assertTrue(lock.validate(s)); |
871 |
> |
assertTrue(lock.isWriteLocked()); |
872 |
> |
lock.unlockWrite(s); |
873 |
> |
|
874 |
> |
assertTrue((s = lock.tryReadLock()) != 0L); |
875 |
> |
assertTrue(lock.validate(s)); |
876 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
877 |
> |
assertTrue(lock.validate(p)); |
878 |
> |
assertTrue(lock.isWriteLocked()); |
879 |
> |
lock.unlockWrite(p); |
880 |
> |
|
881 |
> |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
882 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
883 |
> |
assertTrue(lock.validate(p)); |
884 |
> |
assertTrue(lock.isWriteLocked()); |
885 |
> |
lock.unlockWrite(p); |
886 |
> |
|
887 |
> |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
888 |
> |
assertTrue(lock.validate(s)); |
889 |
> |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
890 |
> |
assertTrue(lock.validate(p)); |
891 |
> |
assertTrue(lock.isWriteLocked()); |
892 |
> |
lock.unlockWrite(p); |
893 |
|
} |
894 |
|
|
895 |
|
/** |
938 |
|
assertTrue(lock.tryLock()); |
939 |
|
} |
940 |
|
|
941 |
+ |
/** |
942 |
+ |
* Lock.newCondition throws UnsupportedOperationException |
943 |
+ |
*/ |
944 |
+ |
public void testLockViewsDoNotSupportConditions() { |
945 |
+ |
StampedLock sl = new StampedLock(); |
946 |
+ |
assertThrows(UnsupportedOperationException.class, |
947 |
+ |
() -> sl.asWriteLock().newCondition(), |
948 |
+ |
() -> sl.asReadLock().newCondition(), |
949 |
+ |
() -> sl.asReadWriteLock().writeLock().newCondition(), |
950 |
+ |
() -> sl.asReadWriteLock().readLock().newCondition()); |
951 |
+ |
} |
952 |
+ |
|
953 |
+ |
/** |
954 |
+ |
* Passing optimistic read stamps to unlock operations result in |
955 |
+ |
* IllegalMonitorStateException |
956 |
+ |
*/ |
957 |
+ |
public void testCannotUnlockOptimisticReadStamps() { |
958 |
+ |
Runnable[] actions = { |
959 |
+ |
() -> { |
960 |
+ |
StampedLock sl = new StampedLock(); |
961 |
+ |
long stamp = sl.tryOptimisticRead(); |
962 |
+ |
assertTrue(stamp != 0); |
963 |
+ |
sl.unlockRead(stamp); |
964 |
+ |
}, |
965 |
+ |
() -> { |
966 |
+ |
StampedLock sl = new StampedLock(); |
967 |
+ |
long stamp = sl.tryOptimisticRead(); |
968 |
+ |
sl.unlock(stamp); |
969 |
+ |
}, |
970 |
+ |
|
971 |
+ |
() -> { |
972 |
+ |
StampedLock sl = new StampedLock(); |
973 |
+ |
long stamp = sl.tryOptimisticRead(); |
974 |
+ |
sl.writeLock(); |
975 |
+ |
sl.unlock(stamp); |
976 |
+ |
}, |
977 |
+ |
() -> { |
978 |
+ |
StampedLock sl = new StampedLock(); |
979 |
+ |
long stamp = sl.tryOptimisticRead(); |
980 |
+ |
sl.readLock(); |
981 |
+ |
sl.unlockRead(stamp); |
982 |
+ |
}, |
983 |
+ |
() -> { |
984 |
+ |
StampedLock sl = new StampedLock(); |
985 |
+ |
long stamp = sl.tryOptimisticRead(); |
986 |
+ |
sl.readLock(); |
987 |
+ |
sl.unlock(stamp); |
988 |
+ |
}, |
989 |
+ |
|
990 |
+ |
() -> { |
991 |
+ |
StampedLock sl = new StampedLock(); |
992 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
993 |
+ |
assertTrue(stamp != 0); |
994 |
+ |
sl.writeLock(); |
995 |
+ |
sl.unlockWrite(stamp); |
996 |
+ |
}, |
997 |
+ |
() -> { |
998 |
+ |
StampedLock sl = new StampedLock(); |
999 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
1000 |
+ |
sl.writeLock(); |
1001 |
+ |
sl.unlock(stamp); |
1002 |
+ |
}, |
1003 |
+ |
() -> { |
1004 |
+ |
StampedLock sl = new StampedLock(); |
1005 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
1006 |
+ |
sl.readLock(); |
1007 |
+ |
sl.unlockRead(stamp); |
1008 |
+ |
}, |
1009 |
+ |
() -> { |
1010 |
+ |
StampedLock sl = new StampedLock(); |
1011 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
1012 |
+ |
sl.readLock(); |
1013 |
+ |
sl.unlock(stamp); |
1014 |
+ |
}, |
1015 |
+ |
|
1016 |
+ |
() -> { |
1017 |
+ |
StampedLock sl = new StampedLock(); |
1018 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1019 |
+ |
assertTrue(stamp != 0); |
1020 |
+ |
sl.writeLock(); |
1021 |
+ |
sl.unlockWrite(stamp); |
1022 |
+ |
}, |
1023 |
+ |
() -> { |
1024 |
+ |
StampedLock sl = new StampedLock(); |
1025 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1026 |
+ |
sl.writeLock(); |
1027 |
+ |
sl.unlock(stamp); |
1028 |
+ |
}, |
1029 |
+ |
() -> { |
1030 |
+ |
StampedLock sl = new StampedLock(); |
1031 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1032 |
+ |
sl.readLock(); |
1033 |
+ |
sl.unlockRead(stamp); |
1034 |
+ |
}, |
1035 |
+ |
() -> { |
1036 |
+ |
StampedLock sl = new StampedLock(); |
1037 |
+ |
sl.readLock(); |
1038 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1039 |
+ |
assertTrue(stamp != 0); |
1040 |
+ |
sl.readLock(); |
1041 |
+ |
sl.unlockRead(stamp); |
1042 |
+ |
}, |
1043 |
+ |
() -> { |
1044 |
+ |
StampedLock sl = new StampedLock(); |
1045 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1046 |
+ |
sl.readLock(); |
1047 |
+ |
sl.unlock(stamp); |
1048 |
+ |
}, |
1049 |
+ |
() -> { |
1050 |
+ |
StampedLock sl = new StampedLock(); |
1051 |
+ |
sl.readLock(); |
1052 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1053 |
+ |
sl.readLock(); |
1054 |
+ |
sl.unlock(stamp); |
1055 |
+ |
}, |
1056 |
+ |
}; |
1057 |
+ |
|
1058 |
+ |
assertThrows(IllegalMonitorStateException.class, actions); |
1059 |
+ |
} |
1060 |
+ |
|
1061 |
+ |
static long writeLockInterruptiblyUninterrupted(StampedLock sl) { |
1062 |
+ |
try { return sl.writeLockInterruptibly(); } |
1063 |
+ |
catch (InterruptedException ex) { throw new AssertionError(ex); } |
1064 |
+ |
} |
1065 |
+ |
|
1066 |
+ |
static long tryWriteLockUninterrupted(StampedLock sl, long time, TimeUnit unit) { |
1067 |
+ |
try { return sl.tryWriteLock(time, unit); } |
1068 |
+ |
catch (InterruptedException ex) { throw new AssertionError(ex); } |
1069 |
+ |
} |
1070 |
+ |
|
1071 |
+ |
static long readLockInterruptiblyUninterrupted(StampedLock sl) { |
1072 |
+ |
try { return sl.readLockInterruptibly(); } |
1073 |
+ |
catch (InterruptedException ex) { throw new AssertionError(ex); } |
1074 |
+ |
} |
1075 |
+ |
|
1076 |
+ |
static long tryReadLockUninterrupted(StampedLock sl, long time, TimeUnit unit) { |
1077 |
+ |
try { return sl.tryReadLock(time, unit); } |
1078 |
+ |
catch (InterruptedException ex) { throw new AssertionError(ex); } |
1079 |
+ |
} |
1080 |
+ |
|
1081 |
+ |
/** |
1082 |
+ |
* Invalid write stamps result in IllegalMonitorStateException |
1083 |
+ |
*/ |
1084 |
+ |
public void testInvalidWriteStampsThrowIllegalMonitorStateException() { |
1085 |
+ |
List<Function<StampedLock, Long>> writeLockers = new ArrayList<>(); |
1086 |
+ |
writeLockers.add((sl) -> sl.writeLock()); |
1087 |
+ |
writeLockers.add((sl) -> writeLockInterruptiblyUninterrupted(sl)); |
1088 |
+ |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
1089 |
+ |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, 0, DAYS)); |
1090 |
+ |
|
1091 |
+ |
List<BiConsumer<StampedLock, Long>> writeUnlockers = new ArrayList<>(); |
1092 |
+ |
writeUnlockers.add((sl, stamp) -> sl.unlockWrite(stamp)); |
1093 |
+ |
writeUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockWrite())); |
1094 |
+ |
writeUnlockers.add((sl, stamp) -> sl.asWriteLock().unlock()); |
1095 |
+ |
writeUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
1096 |
+ |
|
1097 |
+ |
List<Consumer<StampedLock>> mutaters = new ArrayList<>(); |
1098 |
+ |
mutaters.add((sl) -> {}); |
1099 |
+ |
mutaters.add((sl) -> sl.readLock()); |
1100 |
+ |
for (Function<StampedLock, Long> writeLocker : writeLockers) |
1101 |
+ |
mutaters.add((sl) -> writeLocker.apply(sl)); |
1102 |
+ |
|
1103 |
+ |
for (Function<StampedLock, Long> writeLocker : writeLockers) |
1104 |
+ |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers) |
1105 |
+ |
for (Consumer<StampedLock> mutater : mutaters) { |
1106 |
+ |
final StampedLock sl = new StampedLock(); |
1107 |
+ |
final long stamp = writeLocker.apply(sl); |
1108 |
+ |
assertTrue(stamp != 0L); |
1109 |
+ |
assertThrows(IllegalMonitorStateException.class, |
1110 |
+ |
() -> sl.unlockRead(stamp)); |
1111 |
+ |
writeUnlocker.accept(sl, stamp); |
1112 |
+ |
mutater.accept(sl); |
1113 |
+ |
assertThrows(IllegalMonitorStateException.class, |
1114 |
+ |
() -> sl.unlock(stamp), |
1115 |
+ |
() -> sl.unlockRead(stamp), |
1116 |
+ |
() -> sl.unlockWrite(stamp)); |
1117 |
+ |
} |
1118 |
+ |
} |
1119 |
+ |
|
1120 |
+ |
/** |
1121 |
+ |
* Invalid read stamps result in IllegalMonitorStateException |
1122 |
+ |
*/ |
1123 |
+ |
public void testInvalidReadStampsThrowIllegalMonitorStateException() { |
1124 |
+ |
List<Function<StampedLock, Long>> readLockers = new ArrayList<>(); |
1125 |
+ |
readLockers.add((sl) -> sl.readLock()); |
1126 |
+ |
readLockers.add((sl) -> readLockInterruptiblyUninterrupted(sl)); |
1127 |
+ |
readLockers.add((sl) -> tryReadLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
1128 |
+ |
readLockers.add((sl) -> tryReadLockUninterrupted(sl, 0, DAYS)); |
1129 |
+ |
|
1130 |
+ |
List<BiConsumer<StampedLock, Long>> readUnlockers = new ArrayList<>(); |
1131 |
+ |
readUnlockers.add((sl, stamp) -> sl.unlockRead(stamp)); |
1132 |
+ |
readUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockRead())); |
1133 |
+ |
readUnlockers.add((sl, stamp) -> sl.asReadLock().unlock()); |
1134 |
+ |
readUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
1135 |
+ |
|
1136 |
+ |
List<Function<StampedLock, Long>> writeLockers = new ArrayList<>(); |
1137 |
+ |
writeLockers.add((sl) -> sl.writeLock()); |
1138 |
+ |
writeLockers.add((sl) -> writeLockInterruptiblyUninterrupted(sl)); |
1139 |
+ |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
1140 |
+ |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, 0, DAYS)); |
1141 |
+ |
|
1142 |
+ |
List<BiConsumer<StampedLock, Long>> writeUnlockers = new ArrayList<>(); |
1143 |
+ |
writeUnlockers.add((sl, stamp) -> sl.unlockWrite(stamp)); |
1144 |
+ |
writeUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockWrite())); |
1145 |
+ |
writeUnlockers.add((sl, stamp) -> sl.asWriteLock().unlock()); |
1146 |
+ |
writeUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
1147 |
+ |
|
1148 |
+ |
|
1149 |
+ |
for (Function<StampedLock, Long> readLocker : readLockers) |
1150 |
+ |
for (BiConsumer<StampedLock, Long> readUnlocker : readUnlockers) |
1151 |
+ |
for (Function<StampedLock, Long> writeLocker : writeLockers) |
1152 |
+ |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers) { |
1153 |
+ |
final StampedLock sl = new StampedLock(); |
1154 |
+ |
final long stamp = readLocker.apply(sl); |
1155 |
+ |
assertTrue(stamp != 0L); |
1156 |
+ |
assertThrows(IllegalMonitorStateException.class, |
1157 |
+ |
() -> sl.unlockWrite(stamp)); |
1158 |
+ |
readUnlocker.accept(sl, stamp); |
1159 |
+ |
assertThrows(IllegalMonitorStateException.class, |
1160 |
+ |
() -> sl.unlock(stamp), |
1161 |
+ |
() -> sl.unlockRead(stamp), |
1162 |
+ |
() -> sl.unlockWrite(stamp)); |
1163 |
+ |
final long writeStamp = writeLocker.apply(sl); |
1164 |
+ |
assertTrue(writeStamp != 0L); |
1165 |
+ |
assertTrue(writeStamp != stamp); |
1166 |
+ |
assertThrows(IllegalMonitorStateException.class, |
1167 |
+ |
() -> sl.unlock(stamp), |
1168 |
+ |
() -> sl.unlockRead(stamp), |
1169 |
+ |
() -> sl.unlockWrite(stamp)); |
1170 |
+ |
writeUnlocker.accept(sl, writeStamp); |
1171 |
+ |
assertThrows(IllegalMonitorStateException.class, |
1172 |
+ |
() -> sl.unlock(stamp), |
1173 |
+ |
() -> sl.unlockRead(stamp), |
1174 |
+ |
() -> sl.unlockWrite(stamp)); |
1175 |
+ |
} |
1176 |
+ |
} |
1177 |
+ |
|
1178 |
|
} |