1 |
/* |
2 |
* Written by members of JCP JSR-166 Expert Group and released to the |
3 |
* public domain. Use, modify, and redistribute this code in any way |
4 |
* without acknowledgement. Other contributors include Andrew Wright, |
5 |
* Jeffrey Hayes, Pat Fischer, Mike Judd. |
6 |
*/ |
7 |
|
8 |
import junit.framework.*; |
9 |
import java.util.concurrent.locks.*; |
10 |
import java.util.concurrent.*; |
11 |
import java.util.*; |
12 |
import java.io.*; |
13 |
|
14 |
public class ReentrantLockTest extends JSR166TestCase { |
15 |
public static void main(String[] args) { |
16 |
junit.textui.TestRunner.run (suite()); |
17 |
} |
18 |
public static Test suite() { |
19 |
return new TestSuite(ReentrantLockTest.class); |
20 |
} |
21 |
|
22 |
/** |
23 |
* A runnable calling lockInterruptibly |
24 |
*/ |
25 |
class InterruptibleLockRunnable implements Runnable { |
26 |
final ReentrantLock lock; |
27 |
InterruptibleLockRunnable(ReentrantLock l) { lock = l; } |
28 |
public void run() { |
29 |
try { |
30 |
lock.lockInterruptibly(); |
31 |
} catch(InterruptedException success){} |
32 |
} |
33 |
} |
34 |
|
35 |
|
36 |
/** |
37 |
* A runnable calling lockInterruptibly that expects to be |
38 |
* interrupted |
39 |
*/ |
40 |
class InterruptedLockRunnable implements Runnable { |
41 |
final ReentrantLock lock; |
42 |
InterruptedLockRunnable(ReentrantLock l) { lock = l; } |
43 |
public void run() { |
44 |
try { |
45 |
lock.lockInterruptibly(); |
46 |
threadShouldThrow(); |
47 |
} catch(InterruptedException success){} |
48 |
} |
49 |
} |
50 |
|
51 |
/** |
52 |
* Subclass to expose protected methods |
53 |
*/ |
54 |
static class PublicReentrantLock extends ReentrantLock { |
55 |
PublicReentrantLock() { super(); } |
56 |
public Collection<Thread> getQueuedThreads() { |
57 |
return super.getQueuedThreads(); |
58 |
} |
59 |
public ConditionObject newCondition() { |
60 |
return new PublicCondition(this); |
61 |
} |
62 |
|
63 |
static class PublicCondition extends ReentrantLock.ConditionObject { |
64 |
PublicCondition(PublicReentrantLock l) { super(l); } |
65 |
public Collection<Thread> getWaitingThreads() { |
66 |
return super.getWaitingThreads(); |
67 |
} |
68 |
} |
69 |
|
70 |
} |
71 |
|
72 |
/* |
73 |
* locking an unlocked lock succeeds |
74 |
*/ |
75 |
public void testLock() { |
76 |
ReentrantLock rl = new ReentrantLock(); |
77 |
rl.lock(); |
78 |
assertTrue(rl.isLocked()); |
79 |
rl.unlock(); |
80 |
} |
81 |
|
82 |
/* |
83 |
* locking an unlocked fair lock succeeds |
84 |
*/ |
85 |
public void testFairLock() { |
86 |
ReentrantLock rl = new ReentrantLock(true); |
87 |
rl.lock(); |
88 |
assertTrue(rl.isLocked()); |
89 |
rl.unlock(); |
90 |
} |
91 |
|
92 |
/* |
93 |
* Unlocking an unlocked lock throws IllegalMonitorStateException |
94 |
*/ |
95 |
public void testUnlock_IllegalMonitorStateException() { |
96 |
ReentrantLock rl = new ReentrantLock(); |
97 |
try { |
98 |
rl.unlock(); |
99 |
shouldThrow(); |
100 |
|
101 |
} catch(IllegalMonitorStateException success){} |
102 |
} |
103 |
|
104 |
/* |
105 |
* trylock on an unlocked lock succeeds |
106 |
*/ |
107 |
public void testTryLock() { |
108 |
ReentrantLock rl = new ReentrantLock(); |
109 |
assertTrue(rl.tryLock()); |
110 |
assertTrue(rl.isLocked()); |
111 |
rl.unlock(); |
112 |
} |
113 |
|
114 |
|
115 |
/* |
116 |
* getLockQueueLength reports number of waiting threads |
117 |
*/ |
118 |
public void testGetLockQueueLength() { |
119 |
final ReentrantLock lock = new ReentrantLock(); |
120 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
121 |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
122 |
try { |
123 |
assertEquals(0, lock.getLockQueueLength()); |
124 |
lock.lock(); |
125 |
t1.start(); |
126 |
Thread.sleep(SHORT_DELAY_MS); |
127 |
assertEquals(1, lock.getLockQueueLength()); |
128 |
t2.start(); |
129 |
Thread.sleep(SHORT_DELAY_MS); |
130 |
assertEquals(2, lock.getLockQueueLength()); |
131 |
t1.interrupt(); |
132 |
Thread.sleep(SHORT_DELAY_MS); |
133 |
assertEquals(1, lock.getLockQueueLength()); |
134 |
lock.unlock(); |
135 |
Thread.sleep(SHORT_DELAY_MS); |
136 |
assertEquals(0, lock.getLockQueueLength()); |
137 |
t1.join(); |
138 |
t2.join(); |
139 |
} catch(Exception e){ |
140 |
unexpectedException(); |
141 |
} |
142 |
} |
143 |
|
144 |
/* |
145 |
* getQueuedThreads includes waiting threads |
146 |
*/ |
147 |
public void testGetQueuedThreads() { |
148 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
149 |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
150 |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
151 |
try { |
152 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
153 |
lock.lock(); |
154 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
155 |
t1.start(); |
156 |
Thread.sleep(SHORT_DELAY_MS); |
157 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
158 |
t2.start(); |
159 |
Thread.sleep(SHORT_DELAY_MS); |
160 |
assertTrue(lock.getQueuedThreads().contains(t1)); |
161 |
assertTrue(lock.getQueuedThreads().contains(t2)); |
162 |
t1.interrupt(); |
163 |
Thread.sleep(SHORT_DELAY_MS); |
164 |
assertFalse(lock.getQueuedThreads().contains(t1)); |
165 |
assertTrue(lock.getQueuedThreads().contains(t2)); |
166 |
lock.unlock(); |
167 |
Thread.sleep(SHORT_DELAY_MS); |
168 |
assertTrue(lock.getQueuedThreads().isEmpty()); |
169 |
t1.join(); |
170 |
t2.join(); |
171 |
} catch(Exception e){ |
172 |
unexpectedException(); |
173 |
} |
174 |
} |
175 |
|
176 |
|
177 |
/* |
178 |
* timed trylock is interruptible. |
179 |
*/ |
180 |
public void testInterruptedException2() { |
181 |
final ReentrantLock lock = new ReentrantLock(); |
182 |
lock.lock(); |
183 |
Thread t = new Thread(new Runnable() { |
184 |
public void run() { |
185 |
try { |
186 |
lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS); |
187 |
threadShouldThrow(); |
188 |
} catch(InterruptedException success){} |
189 |
} |
190 |
}); |
191 |
try { |
192 |
t.start(); |
193 |
t.interrupt(); |
194 |
} catch(Exception e){ |
195 |
unexpectedException(); |
196 |
} |
197 |
} |
198 |
|
199 |
|
200 |
/** |
201 |
* Trylock on a locked lock fails |
202 |
*/ |
203 |
public void testTryLockWhenLocked() { |
204 |
final ReentrantLock lock = new ReentrantLock(); |
205 |
lock.lock(); |
206 |
Thread t = new Thread(new Runnable() { |
207 |
public void run() { |
208 |
threadAssertFalse(lock.tryLock()); |
209 |
} |
210 |
}); |
211 |
try { |
212 |
t.start(); |
213 |
t.join(); |
214 |
lock.unlock(); |
215 |
} catch(Exception e){ |
216 |
unexpectedException(); |
217 |
} |
218 |
} |
219 |
|
220 |
/** |
221 |
* Timed trylock on a locked lock times out |
222 |
*/ |
223 |
public void testTryLock_Timeout() { |
224 |
final ReentrantLock lock = new ReentrantLock(); |
225 |
lock.lock(); |
226 |
Thread t = new Thread(new Runnable() { |
227 |
public void run() { |
228 |
try { |
229 |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
230 |
} catch (Exception ex) { |
231 |
threadUnexpectedException(); |
232 |
} |
233 |
} |
234 |
}); |
235 |
try { |
236 |
t.start(); |
237 |
t.join(); |
238 |
lock.unlock(); |
239 |
} catch(Exception e){ |
240 |
unexpectedException(); |
241 |
} |
242 |
} |
243 |
|
244 |
/** |
245 |
* getHoldCount returns number of recursive holds |
246 |
*/ |
247 |
public void testGetHoldCount() { |
248 |
ReentrantLock lock = new ReentrantLock(); |
249 |
for(int i = 1; i <= SIZE; i++) { |
250 |
lock.lock(); |
251 |
assertEquals(i,lock.getHoldCount()); |
252 |
} |
253 |
for(int i = SIZE; i > 0; i--) { |
254 |
lock.unlock(); |
255 |
assertEquals(i-1,lock.getHoldCount()); |
256 |
} |
257 |
} |
258 |
|
259 |
|
260 |
/** |
261 |
* isLocked is true when locked and false when not |
262 |
*/ |
263 |
public void testIsLocked() { |
264 |
final ReentrantLock lock = new ReentrantLock(); |
265 |
lock.lock(); |
266 |
assertTrue(lock.isLocked()); |
267 |
lock.unlock(); |
268 |
assertFalse(lock.isLocked()); |
269 |
Thread t = new Thread(new Runnable() { |
270 |
public void run() { |
271 |
lock.lock(); |
272 |
try { |
273 |
Thread.sleep(SMALL_DELAY_MS); |
274 |
} |
275 |
catch(Exception e) { |
276 |
threadUnexpectedException(); |
277 |
} |
278 |
lock.unlock(); |
279 |
} |
280 |
}); |
281 |
try { |
282 |
t.start(); |
283 |
Thread.sleep(SHORT_DELAY_MS); |
284 |
assertTrue(lock.isLocked()); |
285 |
t.join(); |
286 |
assertFalse(lock.isLocked()); |
287 |
} catch(Exception e){ |
288 |
unexpectedException(); |
289 |
} |
290 |
} |
291 |
|
292 |
|
293 |
/* |
294 |
* lockInterruptibly is interruptible. |
295 |
*/ |
296 |
public void testLockInterruptibly1() { |
297 |
final ReentrantLock lock = new ReentrantLock(); |
298 |
lock.lock(); |
299 |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
300 |
try { |
301 |
t.start(); |
302 |
t.interrupt(); |
303 |
lock.unlock(); |
304 |
t.join(); |
305 |
} catch(Exception e){ |
306 |
unexpectedException(); |
307 |
} |
308 |
} |
309 |
|
310 |
/** |
311 |
* lockInterruptibly succeeds when unlocked, else is interruptible |
312 |
*/ |
313 |
public void testLockInterruptibly2() { |
314 |
final ReentrantLock lock = new ReentrantLock(); |
315 |
try { |
316 |
lock.lockInterruptibly(); |
317 |
} catch(Exception e) { |
318 |
unexpectedException(); |
319 |
} |
320 |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
321 |
try { |
322 |
t.start(); |
323 |
t.interrupt(); |
324 |
assertTrue(lock.isLocked()); |
325 |
assertTrue(lock.isHeldByCurrentThread()); |
326 |
t.join(); |
327 |
} catch(Exception e){ |
328 |
unexpectedException(); |
329 |
} |
330 |
} |
331 |
|
332 |
/** |
333 |
* Calling await without holding lock throws IllegalMonitorStateException |
334 |
*/ |
335 |
public void testAwait_IllegalMonitor() { |
336 |
final ReentrantLock lock = new ReentrantLock(); |
337 |
final Condition c = lock.newCondition(); |
338 |
try { |
339 |
c.await(); |
340 |
shouldThrow(); |
341 |
} |
342 |
catch (IllegalMonitorStateException success) { |
343 |
} |
344 |
catch (Exception ex) { |
345 |
unexpectedException(); |
346 |
} |
347 |
} |
348 |
|
349 |
/** |
350 |
* Calling signal without holding lock throws IllegalMonitorStateException |
351 |
*/ |
352 |
public void testSignal_IllegalMonitor() { |
353 |
final ReentrantLock lock = new ReentrantLock(); |
354 |
final Condition c = lock.newCondition(); |
355 |
try { |
356 |
c.signal(); |
357 |
shouldThrow(); |
358 |
} |
359 |
catch (IllegalMonitorStateException success) { |
360 |
} |
361 |
catch (Exception ex) { |
362 |
unexpectedException(); |
363 |
} |
364 |
} |
365 |
|
366 |
/** |
367 |
* awaitNanos without a signal times out |
368 |
*/ |
369 |
public void testAwaitNanos_Timeout() { |
370 |
final ReentrantLock lock = new ReentrantLock(); |
371 |
final Condition c = lock.newCondition(); |
372 |
try { |
373 |
lock.lock(); |
374 |
long t = c.awaitNanos(100); |
375 |
assertTrue(t <= 0); |
376 |
lock.unlock(); |
377 |
} |
378 |
catch (Exception ex) { |
379 |
unexpectedException(); |
380 |
} |
381 |
} |
382 |
|
383 |
/** |
384 |
* timed await without a signal times out |
385 |
*/ |
386 |
public void testAwait_Timeout() { |
387 |
final ReentrantLock lock = new ReentrantLock(); |
388 |
final Condition c = lock.newCondition(); |
389 |
try { |
390 |
lock.lock(); |
391 |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
392 |
lock.unlock(); |
393 |
} |
394 |
catch (Exception ex) { |
395 |
unexpectedException(); |
396 |
} |
397 |
} |
398 |
|
399 |
/** |
400 |
* awaitUntil without a signal times out |
401 |
*/ |
402 |
public void testAwaitUntil_Timeout() { |
403 |
final ReentrantLock lock = new ReentrantLock(); |
404 |
final Condition c = lock.newCondition(); |
405 |
try { |
406 |
lock.lock(); |
407 |
java.util.Date d = new java.util.Date(); |
408 |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
409 |
lock.unlock(); |
410 |
} |
411 |
catch (Exception ex) { |
412 |
unexpectedException(); |
413 |
} |
414 |
} |
415 |
|
416 |
/** |
417 |
* await returns when signalled |
418 |
*/ |
419 |
public void testAwait() { |
420 |
final ReentrantLock lock = new ReentrantLock(); |
421 |
final ReentrantLock.ConditionObject c = lock.newCondition(); |
422 |
Thread t = new Thread(new Runnable() { |
423 |
public void run() { |
424 |
try { |
425 |
lock.lock(); |
426 |
c.await(); |
427 |
lock.unlock(); |
428 |
} |
429 |
catch(InterruptedException e) { |
430 |
threadUnexpectedException(); |
431 |
} |
432 |
} |
433 |
}); |
434 |
|
435 |
try { |
436 |
t.start(); |
437 |
Thread.sleep(SHORT_DELAY_MS); |
438 |
lock.lock(); |
439 |
c.signal(); |
440 |
lock.unlock(); |
441 |
t.join(SHORT_DELAY_MS); |
442 |
assertFalse(t.isAlive()); |
443 |
} |
444 |
catch (Exception ex) { |
445 |
unexpectedException(); |
446 |
} |
447 |
} |
448 |
|
449 |
/** |
450 |
* hasWaiters returns true when a thread is waiting, else false |
451 |
*/ |
452 |
public void testHasWaiters() { |
453 |
final ReentrantLock lock = new ReentrantLock(); |
454 |
final ReentrantLock.ConditionObject c = lock.newCondition(); |
455 |
Thread t = new Thread(new Runnable() { |
456 |
public void run() { |
457 |
try { |
458 |
lock.lock(); |
459 |
threadAssertFalse(c.hasWaiters()); |
460 |
threadAssertEquals(0, c.getWaitQueueLength()); |
461 |
c.await(); |
462 |
lock.unlock(); |
463 |
} |
464 |
catch(InterruptedException e) { |
465 |
threadUnexpectedException(); |
466 |
} |
467 |
} |
468 |
}); |
469 |
|
470 |
try { |
471 |
t.start(); |
472 |
Thread.sleep(SHORT_DELAY_MS); |
473 |
lock.lock(); |
474 |
assertTrue(c.hasWaiters()); |
475 |
assertEquals(1, c.getWaitQueueLength()); |
476 |
c.signal(); |
477 |
lock.unlock(); |
478 |
Thread.sleep(SHORT_DELAY_MS); |
479 |
lock.lock(); |
480 |
assertFalse(c.hasWaiters()); |
481 |
assertEquals(0, c.getWaitQueueLength()); |
482 |
lock.unlock(); |
483 |
t.join(SHORT_DELAY_MS); |
484 |
assertFalse(t.isAlive()); |
485 |
} |
486 |
catch (Exception ex) { |
487 |
unexpectedException(); |
488 |
} |
489 |
} |
490 |
|
491 |
/** |
492 |
* getWaitQueueLength returns number of waiting threads |
493 |
*/ |
494 |
public void testGetWaitQueueLength() { |
495 |
final ReentrantLock lock = new ReentrantLock(); |
496 |
final ReentrantLock.ConditionObject c = lock.newCondition(); |
497 |
Thread t1 = new Thread(new Runnable() { |
498 |
public void run() { |
499 |
try { |
500 |
lock.lock(); |
501 |
threadAssertFalse(c.hasWaiters()); |
502 |
threadAssertEquals(0, c.getWaitQueueLength()); |
503 |
c.await(); |
504 |
lock.unlock(); |
505 |
} |
506 |
catch(InterruptedException e) { |
507 |
threadUnexpectedException(); |
508 |
} |
509 |
} |
510 |
}); |
511 |
|
512 |
Thread t2 = new Thread(new Runnable() { |
513 |
public void run() { |
514 |
try { |
515 |
lock.lock(); |
516 |
threadAssertTrue(c.hasWaiters()); |
517 |
threadAssertEquals(1, c.getWaitQueueLength()); |
518 |
c.await(); |
519 |
lock.unlock(); |
520 |
} |
521 |
catch(InterruptedException e) { |
522 |
threadUnexpectedException(); |
523 |
} |
524 |
} |
525 |
}); |
526 |
|
527 |
try { |
528 |
t1.start(); |
529 |
Thread.sleep(SHORT_DELAY_MS); |
530 |
t2.start(); |
531 |
Thread.sleep(SHORT_DELAY_MS); |
532 |
lock.lock(); |
533 |
assertTrue(c.hasWaiters()); |
534 |
assertEquals(2, c.getWaitQueueLength()); |
535 |
c.signalAll(); |
536 |
lock.unlock(); |
537 |
Thread.sleep(SHORT_DELAY_MS); |
538 |
lock.lock(); |
539 |
assertFalse(c.hasWaiters()); |
540 |
assertEquals(0, c.getWaitQueueLength()); |
541 |
lock.unlock(); |
542 |
t1.join(SHORT_DELAY_MS); |
543 |
t2.join(SHORT_DELAY_MS); |
544 |
assertFalse(t1.isAlive()); |
545 |
assertFalse(t2.isAlive()); |
546 |
} |
547 |
catch (Exception ex) { |
548 |
unexpectedException(); |
549 |
} |
550 |
} |
551 |
|
552 |
/** |
553 |
* getWaitingThreads returns only and all waiting threads |
554 |
*/ |
555 |
public void testGetWaitingThreads() { |
556 |
final PublicReentrantLock lock = new PublicReentrantLock(); |
557 |
final PublicReentrantLock.PublicCondition c = (PublicReentrantLock.PublicCondition)lock.newCondition(); |
558 |
Thread t1 = new Thread(new Runnable() { |
559 |
public void run() { |
560 |
try { |
561 |
lock.lock(); |
562 |
threadAssertTrue(c.getWaitingThreads().isEmpty()); |
563 |
c.await(); |
564 |
lock.unlock(); |
565 |
} |
566 |
catch(InterruptedException e) { |
567 |
threadUnexpectedException(); |
568 |
} |
569 |
} |
570 |
}); |
571 |
|
572 |
Thread t2 = new Thread(new Runnable() { |
573 |
public void run() { |
574 |
try { |
575 |
lock.lock(); |
576 |
threadAssertFalse(c.getWaitingThreads().isEmpty()); |
577 |
c.await(); |
578 |
lock.unlock(); |
579 |
} |
580 |
catch(InterruptedException e) { |
581 |
threadUnexpectedException(); |
582 |
} |
583 |
} |
584 |
}); |
585 |
|
586 |
try { |
587 |
lock.lock(); |
588 |
assertTrue(c.getWaitingThreads().isEmpty()); |
589 |
lock.unlock(); |
590 |
t1.start(); |
591 |
Thread.sleep(SHORT_DELAY_MS); |
592 |
t2.start(); |
593 |
Thread.sleep(SHORT_DELAY_MS); |
594 |
lock.lock(); |
595 |
assertTrue(c.hasWaiters()); |
596 |
assertTrue(c.getWaitingThreads().contains(t1)); |
597 |
assertTrue(c.getWaitingThreads().contains(t2)); |
598 |
c.signalAll(); |
599 |
lock.unlock(); |
600 |
Thread.sleep(SHORT_DELAY_MS); |
601 |
lock.lock(); |
602 |
assertFalse(c.hasWaiters()); |
603 |
assertTrue(c.getWaitingThreads().isEmpty()); |
604 |
lock.unlock(); |
605 |
t1.join(SHORT_DELAY_MS); |
606 |
t2.join(SHORT_DELAY_MS); |
607 |
assertFalse(t1.isAlive()); |
608 |
assertFalse(t2.isAlive()); |
609 |
} |
610 |
catch (Exception ex) { |
611 |
unexpectedException(); |
612 |
} |
613 |
} |
614 |
|
615 |
/** |
616 |
* awaitUninterruptibly doesn't abort on interrupt |
617 |
*/ |
618 |
public void testAwaitUninterruptibly() { |
619 |
final ReentrantLock lock = new ReentrantLock(); |
620 |
final Condition c = lock.newCondition(); |
621 |
Thread t = new Thread(new Runnable() { |
622 |
public void run() { |
623 |
lock.lock(); |
624 |
c.awaitUninterruptibly(); |
625 |
lock.unlock(); |
626 |
} |
627 |
}); |
628 |
|
629 |
try { |
630 |
t.start(); |
631 |
Thread.sleep(SHORT_DELAY_MS); |
632 |
t.interrupt(); |
633 |
lock.lock(); |
634 |
c.signal(); |
635 |
lock.unlock(); |
636 |
assert(t.isInterrupted()); |
637 |
t.join(SHORT_DELAY_MS); |
638 |
assertFalse(t.isAlive()); |
639 |
} |
640 |
catch (Exception ex) { |
641 |
unexpectedException(); |
642 |
} |
643 |
} |
644 |
|
645 |
/** |
646 |
* await is interruptible |
647 |
*/ |
648 |
public void testAwait_Interrupt() { |
649 |
final ReentrantLock lock = new ReentrantLock(); |
650 |
final Condition c = lock.newCondition(); |
651 |
Thread t = new Thread(new Runnable() { |
652 |
public void run() { |
653 |
try { |
654 |
lock.lock(); |
655 |
c.await(); |
656 |
lock.unlock(); |
657 |
threadShouldThrow(); |
658 |
} |
659 |
catch(InterruptedException success) { |
660 |
} |
661 |
} |
662 |
}); |
663 |
|
664 |
try { |
665 |
t.start(); |
666 |
Thread.sleep(SHORT_DELAY_MS); |
667 |
t.interrupt(); |
668 |
t.join(SHORT_DELAY_MS); |
669 |
assertFalse(t.isAlive()); |
670 |
} |
671 |
catch (Exception ex) { |
672 |
unexpectedException(); |
673 |
} |
674 |
} |
675 |
|
676 |
/** |
677 |
* awaitNanos is interruptible |
678 |
*/ |
679 |
public void testAwaitNanos_Interrupt() { |
680 |
final ReentrantLock lock = new ReentrantLock(); |
681 |
final Condition c = lock.newCondition(); |
682 |
Thread t = new Thread(new Runnable() { |
683 |
public void run() { |
684 |
try { |
685 |
lock.lock(); |
686 |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
687 |
lock.unlock(); |
688 |
threadShouldThrow(); |
689 |
} |
690 |
catch(InterruptedException success) { |
691 |
} |
692 |
} |
693 |
}); |
694 |
|
695 |
try { |
696 |
t.start(); |
697 |
Thread.sleep(SHORT_DELAY_MS); |
698 |
t.interrupt(); |
699 |
t.join(SHORT_DELAY_MS); |
700 |
assertFalse(t.isAlive()); |
701 |
} |
702 |
catch (Exception ex) { |
703 |
unexpectedException(); |
704 |
} |
705 |
} |
706 |
|
707 |
/** |
708 |
* awaitUntil is interruptible |
709 |
*/ |
710 |
public void testAwaitUntil_Interrupt() { |
711 |
final ReentrantLock lock = new ReentrantLock(); |
712 |
final Condition c = lock.newCondition(); |
713 |
Thread t = new Thread(new Runnable() { |
714 |
public void run() { |
715 |
try { |
716 |
lock.lock(); |
717 |
java.util.Date d = new java.util.Date(); |
718 |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
719 |
lock.unlock(); |
720 |
threadShouldThrow(); |
721 |
} |
722 |
catch(InterruptedException success) { |
723 |
} |
724 |
} |
725 |
}); |
726 |
|
727 |
try { |
728 |
t.start(); |
729 |
Thread.sleep(SHORT_DELAY_MS); |
730 |
t.interrupt(); |
731 |
t.join(SHORT_DELAY_MS); |
732 |
assertFalse(t.isAlive()); |
733 |
} |
734 |
catch (Exception ex) { |
735 |
unexpectedException(); |
736 |
} |
737 |
} |
738 |
|
739 |
/** |
740 |
* signalAll wakes up all threads |
741 |
*/ |
742 |
public void testSignalAll() { |
743 |
final ReentrantLock lock = new ReentrantLock(); |
744 |
final Condition c = lock.newCondition(); |
745 |
Thread t1 = new Thread(new Runnable() { |
746 |
public void run() { |
747 |
try { |
748 |
lock.lock(); |
749 |
c.await(); |
750 |
lock.unlock(); |
751 |
} |
752 |
catch(InterruptedException e) { |
753 |
threadUnexpectedException(); |
754 |
} |
755 |
} |
756 |
}); |
757 |
|
758 |
Thread t2 = new Thread(new Runnable() { |
759 |
public void run() { |
760 |
try { |
761 |
lock.lock(); |
762 |
c.await(); |
763 |
lock.unlock(); |
764 |
} |
765 |
catch(InterruptedException e) { |
766 |
threadUnexpectedException(); |
767 |
} |
768 |
} |
769 |
}); |
770 |
|
771 |
try { |
772 |
t1.start(); |
773 |
t2.start(); |
774 |
Thread.sleep(SHORT_DELAY_MS); |
775 |
lock.lock(); |
776 |
c.signalAll(); |
777 |
lock.unlock(); |
778 |
t1.join(SHORT_DELAY_MS); |
779 |
t2.join(SHORT_DELAY_MS); |
780 |
assertFalse(t1.isAlive()); |
781 |
assertFalse(t2.isAlive()); |
782 |
} |
783 |
catch (Exception ex) { |
784 |
unexpectedException(); |
785 |
} |
786 |
} |
787 |
|
788 |
/** |
789 |
* A serialized lock deserializes as unlocked |
790 |
*/ |
791 |
public void testSerialization() { |
792 |
ReentrantLock l = new ReentrantLock(); |
793 |
l.lock(); |
794 |
l.unlock(); |
795 |
|
796 |
try { |
797 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
798 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
799 |
out.writeObject(l); |
800 |
out.close(); |
801 |
|
802 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
803 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
804 |
ReentrantLock r = (ReentrantLock) in.readObject(); |
805 |
r.lock(); |
806 |
r.unlock(); |
807 |
} catch(Exception e){ |
808 |
e.printStackTrace(); |
809 |
unexpectedException(); |
810 |
} |
811 |
} |
812 |
|
813 |
} |