8 |
|
import junit.framework.*; |
9 |
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import java.util.concurrent.locks.*; |
10 |
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import java.util.concurrent.*; |
11 |
+ |
import java.util.*; |
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+ |
import java.io.*; |
13 |
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|
14 |
< |
public class ReentrantLockTest extends TestCase { |
13 |
< |
static int HOLD_COUNT_TEST_LIMIT = 20; |
14 |
< |
|
14 |
> |
public class ReentrantLockTest extends JSR166TestCase { |
15 |
|
public static void main(String[] args) { |
16 |
|
junit.textui.TestRunner.run (suite()); |
17 |
|
} |
18 |
– |
|
18 |
|
public static Test suite() { |
19 |
|
return new TestSuite(ReentrantLockTest.class); |
20 |
|
} |
21 |
|
|
22 |
< |
private static long SHORT_DELAY_MS = 100; |
23 |
< |
private static long MEDIUM_DELAY_MS = 1000; |
25 |
< |
private static long LONG_DELAY_MS = 10000; |
26 |
< |
|
27 |
< |
/* |
28 |
< |
* Unlocks an unlocked lock, throws Illegal Monitor State |
29 |
< |
* |
22 |
> |
/** |
23 |
> |
* A runnable calling lockInterruptibly |
24 |
|
*/ |
25 |
< |
|
26 |
< |
public void testIllegalMonitorStateException(){ |
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(); |
61 |
> |
} |
62 |
> |
|
63 |
> |
class PublicCondition extends ReentrantLock.ConditionObject { |
64 |
> |
PublicCondition() { } |
65 |
> |
public Collection<Thread> getWaitingThreads() { |
66 |
> |
return super.getWaitingThreads(); |
67 |
> |
} |
68 |
> |
} |
69 |
> |
|
70 |
> |
} |
71 |
> |
|
72 |
> |
/** |
73 |
> |
* Constructor sets given fairness |
74 |
> |
*/ |
75 |
> |
public void testConstructor() { |
76 |
|
ReentrantLock rl = new ReentrantLock(); |
77 |
< |
try{ |
78 |
< |
rl.unlock(); |
79 |
< |
fail("Should of thown Illegal Monitor State Exception"); |
77 |
> |
assertFalse(rl.isFair()); |
78 |
> |
ReentrantLock r2 = new ReentrantLock(true); |
79 |
> |
assertTrue(r2.isFair()); |
80 |
> |
} |
81 |
|
|
82 |
< |
}catch(IllegalMonitorStateException sucess){} |
82 |
> |
/** |
83 |
> |
* locking an unlocked lock succeeds |
84 |
> |
*/ |
85 |
> |
public void testLock() { |
86 |
> |
ReentrantLock rl = new ReentrantLock(); |
87 |
> |
rl.lock(); |
88 |
> |
assertTrue(rl.isLocked()); |
89 |
> |
rl.unlock(); |
90 |
> |
} |
91 |
> |
|
92 |
> |
/** |
93 |
> |
* locking an unlocked fair lock succeeds |
94 |
> |
*/ |
95 |
> |
public void testFairLock() { |
96 |
> |
ReentrantLock rl = new ReentrantLock(true); |
97 |
> |
rl.lock(); |
98 |
> |
assertTrue(rl.isLocked()); |
99 |
> |
rl.unlock(); |
100 |
> |
} |
101 |
|
|
102 |
+ |
/** |
103 |
+ |
* Unlocking an unlocked lock throws IllegalMonitorStateException |
104 |
+ |
*/ |
105 |
+ |
public void testUnlock_IllegalMonitorStateException() { |
106 |
+ |
ReentrantLock rl = new ReentrantLock(); |
107 |
+ |
try { |
108 |
+ |
rl.unlock(); |
109 |
+ |
shouldThrow(); |
110 |
|
|
111 |
+ |
} catch(IllegalMonitorStateException success){} |
112 |
|
} |
113 |
< |
|
114 |
< |
/* |
115 |
< |
* makes a lock, locks it, tries to aquire the lock in another thread |
45 |
< |
* interrupts that thread and waits for an interrupted Exception to |
46 |
< |
* be thrown. |
113 |
> |
|
114 |
> |
/** |
115 |
> |
* trylock on an unlocked lock succeeds |
116 |
|
*/ |
117 |
+ |
public void testTryLock() { |
118 |
+ |
ReentrantLock rl = new ReentrantLock(); |
119 |
+ |
assertTrue(rl.tryLock()); |
120 |
+ |
assertTrue(rl.isLocked()); |
121 |
+ |
rl.unlock(); |
122 |
+ |
} |
123 |
+ |
|
124 |
|
|
125 |
< |
public void testInterruptedException(){ |
125 |
> |
/** |
126 |
> |
* getQueueLength reports number of waiting threads |
127 |
> |
*/ |
128 |
> |
public void testGetQueueLength() { |
129 |
> |
final ReentrantLock lock = new ReentrantLock(); |
130 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
131 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
132 |
> |
try { |
133 |
> |
assertEquals(0, lock.getQueueLength()); |
134 |
> |
lock.lock(); |
135 |
> |
t1.start(); |
136 |
> |
Thread.sleep(SHORT_DELAY_MS); |
137 |
> |
assertEquals(1, lock.getQueueLength()); |
138 |
> |
t2.start(); |
139 |
> |
Thread.sleep(SHORT_DELAY_MS); |
140 |
> |
assertEquals(2, lock.getQueueLength()); |
141 |
> |
t1.interrupt(); |
142 |
> |
Thread.sleep(SHORT_DELAY_MS); |
143 |
> |
assertEquals(1, lock.getQueueLength()); |
144 |
> |
lock.unlock(); |
145 |
> |
Thread.sleep(SHORT_DELAY_MS); |
146 |
> |
assertEquals(0, lock.getQueueLength()); |
147 |
> |
t1.join(); |
148 |
> |
t2.join(); |
149 |
> |
} catch(Exception e){ |
150 |
> |
unexpectedException(); |
151 |
> |
} |
152 |
> |
} |
153 |
> |
|
154 |
> |
/** |
155 |
> |
* getQueuedThreads includes waiting threads |
156 |
> |
*/ |
157 |
> |
public void testGetQueuedThreads() { |
158 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
159 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
160 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
161 |
> |
try { |
162 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
163 |
> |
lock.lock(); |
164 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
165 |
> |
t1.start(); |
166 |
> |
Thread.sleep(SHORT_DELAY_MS); |
167 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
168 |
> |
t2.start(); |
169 |
> |
Thread.sleep(SHORT_DELAY_MS); |
170 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
171 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
172 |
> |
t1.interrupt(); |
173 |
> |
Thread.sleep(SHORT_DELAY_MS); |
174 |
> |
assertFalse(lock.getQueuedThreads().contains(t1)); |
175 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
176 |
> |
lock.unlock(); |
177 |
> |
Thread.sleep(SHORT_DELAY_MS); |
178 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
179 |
> |
t1.join(); |
180 |
> |
t2.join(); |
181 |
> |
} catch(Exception e){ |
182 |
> |
unexpectedException(); |
183 |
> |
} |
184 |
> |
} |
185 |
> |
|
186 |
> |
|
187 |
> |
/** |
188 |
> |
* timed trylock is interruptible. |
189 |
> |
*/ |
190 |
> |
public void testInterruptedException2() { |
191 |
|
final ReentrantLock lock = new ReentrantLock(); |
192 |
|
lock.lock(); |
193 |
|
Thread t = new Thread(new Runnable() { |
194 |
< |
public void run(){ |
195 |
< |
try{ |
196 |
< |
lock.lockInterruptibly(); |
197 |
< |
fail("should throw"); |
198 |
< |
}catch(InterruptedException sucess){} |
194 |
> |
public void run() { |
195 |
> |
try { |
196 |
> |
lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS); |
197 |
> |
threadShouldThrow(); |
198 |
> |
} catch(InterruptedException success){} |
199 |
|
} |
200 |
|
}); |
201 |
< |
t.start(); |
202 |
< |
t.interrupt(); |
203 |
< |
lock.unlock(); |
204 |
< |
} |
201 |
> |
try { |
202 |
> |
t.start(); |
203 |
> |
t.interrupt(); |
204 |
> |
} catch(Exception e){ |
205 |
> |
unexpectedException(); |
206 |
> |
} |
207 |
> |
} |
208 |
|
|
65 |
– |
/* |
66 |
– |
* tests for interrupted exception on a timed wait |
67 |
– |
* |
68 |
– |
*/ |
69 |
– |
|
209 |
|
|
210 |
< |
public void testInterruptedException2(){ |
210 |
> |
/** |
211 |
> |
* Trylock on a locked lock fails |
212 |
> |
*/ |
213 |
> |
public void testTryLockWhenLocked() { |
214 |
|
final ReentrantLock lock = new ReentrantLock(); |
215 |
|
lock.lock(); |
216 |
|
Thread t = new Thread(new Runnable() { |
217 |
< |
public void run(){ |
218 |
< |
try{ |
77 |
< |
lock.tryLock(1000,TimeUnit.MILLISECONDS); |
78 |
< |
fail("should throw"); |
79 |
< |
}catch(InterruptedException sucess){} |
217 |
> |
public void run() { |
218 |
> |
threadAssertFalse(lock.tryLock()); |
219 |
|
} |
220 |
|
}); |
221 |
< |
t.start(); |
222 |
< |
t.interrupt(); |
223 |
< |
} |
221 |
> |
try { |
222 |
> |
t.start(); |
223 |
> |
t.join(); |
224 |
> |
lock.unlock(); |
225 |
> |
} catch(Exception e){ |
226 |
> |
unexpectedException(); |
227 |
> |
} |
228 |
> |
} |
229 |
|
|
230 |
+ |
/** |
231 |
+ |
* Timed trylock on a locked lock times out |
232 |
+ |
*/ |
233 |
+ |
public void testTryLock_Timeout() { |
234 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
235 |
+ |
lock.lock(); |
236 |
+ |
Thread t = new Thread(new Runnable() { |
237 |
+ |
public void run() { |
238 |
+ |
try { |
239 |
+ |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
240 |
+ |
} catch (Exception ex) { |
241 |
+ |
threadUnexpectedException(); |
242 |
+ |
} |
243 |
+ |
} |
244 |
+ |
}); |
245 |
+ |
try { |
246 |
+ |
t.start(); |
247 |
+ |
t.join(); |
248 |
+ |
lock.unlock(); |
249 |
+ |
} catch(Exception e){ |
250 |
+ |
unexpectedException(); |
251 |
+ |
} |
252 |
+ |
} |
253 |
|
|
254 |
+ |
/** |
255 |
+ |
* getHoldCount returns number of recursive holds |
256 |
+ |
*/ |
257 |
|
public void testGetHoldCount() { |
258 |
|
ReentrantLock lock = new ReentrantLock(); |
259 |
< |
for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) { |
259 |
> |
for(int i = 1; i <= SIZE; i++) { |
260 |
|
lock.lock(); |
261 |
|
assertEquals(i,lock.getHoldCount()); |
262 |
|
} |
263 |
< |
for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) { |
263 |
> |
for(int i = SIZE; i > 0; i--) { |
264 |
|
lock.unlock(); |
265 |
|
assertEquals(i-1,lock.getHoldCount()); |
266 |
|
} |
267 |
|
} |
268 |
|
|
269 |
|
|
270 |
< |
|
271 |
< |
|
270 |
> |
/** |
271 |
> |
* isLocked is true when locked and false when not |
272 |
> |
*/ |
273 |
|
public void testIsLocked() { |
274 |
|
final ReentrantLock lock = new ReentrantLock(); |
275 |
|
lock.lock(); |
280 |
|
public void run() { |
281 |
|
lock.lock(); |
282 |
|
try { |
283 |
< |
Thread.sleep(SHORT_DELAY_MS * 2); |
283 |
> |
Thread.sleep(SMALL_DELAY_MS); |
284 |
|
} |
285 |
< |
catch(Exception e) {} |
285 |
> |
catch(Exception e) { |
286 |
> |
threadUnexpectedException(); |
287 |
> |
} |
288 |
|
lock.unlock(); |
289 |
|
} |
290 |
|
}); |
291 |
< |
try{ |
291 |
> |
try { |
292 |
|
t.start(); |
293 |
|
Thread.sleep(SHORT_DELAY_MS); |
294 |
|
assertTrue(lock.isLocked()); |
295 |
|
t.join(); |
296 |
|
assertFalse(lock.isLocked()); |
297 |
|
} catch(Exception e){ |
298 |
< |
fail("unexpected exception"); |
298 |
> |
unexpectedException(); |
299 |
> |
} |
300 |
> |
} |
301 |
> |
|
302 |
> |
|
303 |
> |
/** |
304 |
> |
* lockInterruptibly is interruptible. |
305 |
> |
*/ |
306 |
> |
public void testLockInterruptibly1() { |
307 |
> |
final ReentrantLock lock = new ReentrantLock(); |
308 |
> |
lock.lock(); |
309 |
> |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
310 |
> |
try { |
311 |
> |
t.start(); |
312 |
> |
t.interrupt(); |
313 |
> |
lock.unlock(); |
314 |
> |
t.join(); |
315 |
> |
} catch(Exception e){ |
316 |
> |
unexpectedException(); |
317 |
|
} |
318 |
+ |
} |
319 |
|
|
320 |
+ |
/** |
321 |
+ |
* lockInterruptibly succeeds when unlocked, else is interruptible |
322 |
+ |
*/ |
323 |
+ |
public void testLockInterruptibly2() { |
324 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
325 |
+ |
try { |
326 |
+ |
lock.lockInterruptibly(); |
327 |
+ |
} catch(Exception e) { |
328 |
+ |
unexpectedException(); |
329 |
+ |
} |
330 |
+ |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
331 |
+ |
try { |
332 |
+ |
t.start(); |
333 |
+ |
t.interrupt(); |
334 |
+ |
assertTrue(lock.isLocked()); |
335 |
+ |
assertTrue(lock.isHeldByCurrentThread()); |
336 |
+ |
t.join(); |
337 |
+ |
} catch(Exception e){ |
338 |
+ |
unexpectedException(); |
339 |
+ |
} |
340 |
|
} |
341 |
|
|
342 |
< |
/* |
343 |
< |
* current thread locks interruptibly the thread |
132 |
< |
* another thread tries to aquire the lock and blocks |
133 |
< |
* on the call. interrupt the attempted aquireLock |
134 |
< |
* assert that the first lock() call actually locked the lock |
135 |
< |
* assert that the current thread is the one holding the lock |
342 |
> |
/** |
343 |
> |
* Calling await without holding lock throws IllegalMonitorStateException |
344 |
|
*/ |
345 |
+ |
public void testAwait_IllegalMonitor() { |
346 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
347 |
+ |
final Condition c = lock.newCondition(); |
348 |
+ |
try { |
349 |
+ |
c.await(); |
350 |
+ |
shouldThrow(); |
351 |
+ |
} |
352 |
+ |
catch (IllegalMonitorStateException success) { |
353 |
+ |
} |
354 |
+ |
catch (Exception ex) { |
355 |
+ |
unexpectedException(); |
356 |
+ |
} |
357 |
+ |
} |
358 |
+ |
|
359 |
+ |
/** |
360 |
+ |
* Calling signal without holding lock throws IllegalMonitorStateException |
361 |
+ |
*/ |
362 |
+ |
public void testSignal_IllegalMonitor() { |
363 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
364 |
+ |
final Condition c = lock.newCondition(); |
365 |
+ |
try { |
366 |
+ |
c.signal(); |
367 |
+ |
shouldThrow(); |
368 |
+ |
} |
369 |
+ |
catch (IllegalMonitorStateException success) { |
370 |
+ |
} |
371 |
+ |
catch (Exception ex) { |
372 |
+ |
unexpectedException(); |
373 |
+ |
} |
374 |
+ |
} |
375 |
|
|
376 |
< |
public void testLockedInterruptibly() { |
376 |
> |
/** |
377 |
> |
* awaitNanos without a signal times out |
378 |
> |
*/ |
379 |
> |
public void testAwaitNanos_Timeout() { |
380 |
|
final ReentrantLock lock = new ReentrantLock(); |
381 |
< |
try {lock.lockInterruptibly();} catch(Exception e) {} |
381 |
> |
final Condition c = lock.newCondition(); |
382 |
> |
try { |
383 |
> |
lock.lock(); |
384 |
> |
long t = c.awaitNanos(100); |
385 |
> |
assertTrue(t <= 0); |
386 |
> |
lock.unlock(); |
387 |
> |
} |
388 |
> |
catch (Exception ex) { |
389 |
> |
unexpectedException(); |
390 |
> |
} |
391 |
> |
} |
392 |
> |
|
393 |
> |
/** |
394 |
> |
* timed await without a signal times out |
395 |
> |
*/ |
396 |
> |
public void testAwait_Timeout() { |
397 |
> |
final ReentrantLock lock = new ReentrantLock(); |
398 |
> |
final Condition c = lock.newCondition(); |
399 |
> |
try { |
400 |
> |
lock.lock(); |
401 |
> |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
402 |
> |
lock.unlock(); |
403 |
> |
} |
404 |
> |
catch (Exception ex) { |
405 |
> |
unexpectedException(); |
406 |
> |
} |
407 |
> |
} |
408 |
> |
|
409 |
> |
/** |
410 |
> |
* awaitUntil without a signal times out |
411 |
> |
*/ |
412 |
> |
public void testAwaitUntil_Timeout() { |
413 |
> |
final ReentrantLock lock = new ReentrantLock(); |
414 |
> |
final Condition c = lock.newCondition(); |
415 |
> |
try { |
416 |
> |
lock.lock(); |
417 |
> |
java.util.Date d = new java.util.Date(); |
418 |
> |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
419 |
> |
lock.unlock(); |
420 |
> |
} |
421 |
> |
catch (Exception ex) { |
422 |
> |
unexpectedException(); |
423 |
> |
} |
424 |
> |
} |
425 |
> |
|
426 |
> |
/** |
427 |
> |
* await returns when signalled |
428 |
> |
*/ |
429 |
> |
public void testAwait() { |
430 |
> |
final ReentrantLock lock = new ReentrantLock(); |
431 |
> |
final ReentrantLock.ConditionObject c = lock.newCondition(); |
432 |
|
Thread t = new Thread(new Runnable() { |
433 |
|
public void run() { |
434 |
|
try { |
435 |
< |
lock.lockInterruptibly(); |
436 |
< |
fail("Failed to generate an Interrupted Exception"); |
435 |
> |
lock.lock(); |
436 |
> |
c.await(); |
437 |
> |
lock.unlock(); |
438 |
|
} |
439 |
< |
catch(InterruptedException e) {} |
439 |
> |
catch(InterruptedException e) { |
440 |
> |
threadUnexpectedException(); |
441 |
> |
} |
442 |
|
} |
443 |
|
}); |
444 |
< |
t.start(); |
445 |
< |
t.interrupt(); |
446 |
< |
assertTrue(lock.isLocked()); |
447 |
< |
assertTrue(lock.isHeldByCurrentThread()); |
444 |
> |
|
445 |
> |
try { |
446 |
> |
t.start(); |
447 |
> |
Thread.sleep(SHORT_DELAY_MS); |
448 |
> |
lock.lock(); |
449 |
> |
c.signal(); |
450 |
> |
lock.unlock(); |
451 |
> |
t.join(SHORT_DELAY_MS); |
452 |
> |
assertFalse(t.isAlive()); |
453 |
> |
} |
454 |
> |
catch (Exception ex) { |
455 |
> |
unexpectedException(); |
456 |
> |
} |
457 |
> |
} |
458 |
> |
|
459 |
> |
/** |
460 |
> |
* hasWaiters returns true when a thread is waiting, else false |
461 |
> |
*/ |
462 |
> |
public void testHasWaiters() { |
463 |
> |
final ReentrantLock lock = new ReentrantLock(); |
464 |
> |
final ReentrantLock.ConditionObject c = lock.newCondition(); |
465 |
> |
Thread t = new Thread(new Runnable() { |
466 |
> |
public void run() { |
467 |
> |
try { |
468 |
> |
lock.lock(); |
469 |
> |
threadAssertFalse(c.hasWaiters()); |
470 |
> |
threadAssertEquals(0, c.getWaitQueueLength()); |
471 |
> |
c.await(); |
472 |
> |
lock.unlock(); |
473 |
> |
} |
474 |
> |
catch(InterruptedException e) { |
475 |
> |
threadUnexpectedException(); |
476 |
> |
} |
477 |
> |
} |
478 |
> |
}); |
479 |
> |
|
480 |
> |
try { |
481 |
> |
t.start(); |
482 |
> |
Thread.sleep(SHORT_DELAY_MS); |
483 |
> |
lock.lock(); |
484 |
> |
assertTrue(c.hasWaiters()); |
485 |
> |
assertEquals(1, c.getWaitQueueLength()); |
486 |
> |
c.signal(); |
487 |
> |
lock.unlock(); |
488 |
> |
Thread.sleep(SHORT_DELAY_MS); |
489 |
> |
lock.lock(); |
490 |
> |
assertFalse(c.hasWaiters()); |
491 |
> |
assertEquals(0, c.getWaitQueueLength()); |
492 |
> |
lock.unlock(); |
493 |
> |
t.join(SHORT_DELAY_MS); |
494 |
> |
assertFalse(t.isAlive()); |
495 |
> |
} |
496 |
> |
catch (Exception ex) { |
497 |
> |
unexpectedException(); |
498 |
> |
} |
499 |
> |
} |
500 |
> |
|
501 |
> |
/** |
502 |
> |
* getWaitQueueLength returns number of waiting threads |
503 |
> |
*/ |
504 |
> |
public void testGetWaitQueueLength() { |
505 |
> |
final ReentrantLock lock = new ReentrantLock(); |
506 |
> |
final ReentrantLock.ConditionObject c = lock.newCondition(); |
507 |
> |
Thread t1 = new Thread(new Runnable() { |
508 |
> |
public void run() { |
509 |
> |
try { |
510 |
> |
lock.lock(); |
511 |
> |
threadAssertFalse(c.hasWaiters()); |
512 |
> |
threadAssertEquals(0, c.getWaitQueueLength()); |
513 |
> |
c.await(); |
514 |
> |
lock.unlock(); |
515 |
> |
} |
516 |
> |
catch(InterruptedException e) { |
517 |
> |
threadUnexpectedException(); |
518 |
> |
} |
519 |
> |
} |
520 |
> |
}); |
521 |
> |
|
522 |
> |
Thread t2 = new Thread(new Runnable() { |
523 |
> |
public void run() { |
524 |
> |
try { |
525 |
> |
lock.lock(); |
526 |
> |
threadAssertTrue(c.hasWaiters()); |
527 |
> |
threadAssertEquals(1, c.getWaitQueueLength()); |
528 |
> |
c.await(); |
529 |
> |
lock.unlock(); |
530 |
> |
} |
531 |
> |
catch(InterruptedException e) { |
532 |
> |
threadUnexpectedException(); |
533 |
> |
} |
534 |
> |
} |
535 |
> |
}); |
536 |
> |
|
537 |
> |
try { |
538 |
> |
t1.start(); |
539 |
> |
Thread.sleep(SHORT_DELAY_MS); |
540 |
> |
t2.start(); |
541 |
> |
Thread.sleep(SHORT_DELAY_MS); |
542 |
> |
lock.lock(); |
543 |
> |
assertTrue(c.hasWaiters()); |
544 |
> |
assertEquals(2, c.getWaitQueueLength()); |
545 |
> |
c.signalAll(); |
546 |
> |
lock.unlock(); |
547 |
> |
Thread.sleep(SHORT_DELAY_MS); |
548 |
> |
lock.lock(); |
549 |
> |
assertFalse(c.hasWaiters()); |
550 |
> |
assertEquals(0, c.getWaitQueueLength()); |
551 |
> |
lock.unlock(); |
552 |
> |
t1.join(SHORT_DELAY_MS); |
553 |
> |
t2.join(SHORT_DELAY_MS); |
554 |
> |
assertFalse(t1.isAlive()); |
555 |
> |
assertFalse(t2.isAlive()); |
556 |
> |
} |
557 |
> |
catch (Exception ex) { |
558 |
> |
unexpectedException(); |
559 |
> |
} |
560 |
> |
} |
561 |
> |
|
562 |
> |
/** |
563 |
> |
* getWaitingThreads returns only and all waiting threads |
564 |
> |
*/ |
565 |
> |
public void testGetWaitingThreads() { |
566 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
567 |
> |
final PublicReentrantLock.PublicCondition c = (PublicReentrantLock.PublicCondition)lock.newCondition(); |
568 |
> |
Thread t1 = new Thread(new Runnable() { |
569 |
> |
public void run() { |
570 |
> |
try { |
571 |
> |
lock.lock(); |
572 |
> |
threadAssertTrue(c.getWaitingThreads().isEmpty()); |
573 |
> |
c.await(); |
574 |
> |
lock.unlock(); |
575 |
> |
} |
576 |
> |
catch(InterruptedException e) { |
577 |
> |
threadUnexpectedException(); |
578 |
> |
} |
579 |
> |
} |
580 |
> |
}); |
581 |
> |
|
582 |
> |
Thread t2 = new Thread(new Runnable() { |
583 |
> |
public void run() { |
584 |
> |
try { |
585 |
> |
lock.lock(); |
586 |
> |
threadAssertFalse(c.getWaitingThreads().isEmpty()); |
587 |
> |
c.await(); |
588 |
> |
lock.unlock(); |
589 |
> |
} |
590 |
> |
catch(InterruptedException e) { |
591 |
> |
threadUnexpectedException(); |
592 |
> |
} |
593 |
> |
} |
594 |
> |
}); |
595 |
> |
|
596 |
> |
try { |
597 |
> |
lock.lock(); |
598 |
> |
assertTrue(c.getWaitingThreads().isEmpty()); |
599 |
> |
lock.unlock(); |
600 |
> |
t1.start(); |
601 |
> |
Thread.sleep(SHORT_DELAY_MS); |
602 |
> |
t2.start(); |
603 |
> |
Thread.sleep(SHORT_DELAY_MS); |
604 |
> |
lock.lock(); |
605 |
> |
assertTrue(c.hasWaiters()); |
606 |
> |
assertTrue(c.getWaitingThreads().contains(t1)); |
607 |
> |
assertTrue(c.getWaitingThreads().contains(t2)); |
608 |
> |
c.signalAll(); |
609 |
> |
lock.unlock(); |
610 |
> |
Thread.sleep(SHORT_DELAY_MS); |
611 |
> |
lock.lock(); |
612 |
> |
assertFalse(c.hasWaiters()); |
613 |
> |
assertTrue(c.getWaitingThreads().isEmpty()); |
614 |
> |
lock.unlock(); |
615 |
> |
t1.join(SHORT_DELAY_MS); |
616 |
> |
t2.join(SHORT_DELAY_MS); |
617 |
> |
assertFalse(t1.isAlive()); |
618 |
> |
assertFalse(t2.isAlive()); |
619 |
> |
} |
620 |
> |
catch (Exception ex) { |
621 |
> |
unexpectedException(); |
622 |
> |
} |
623 |
> |
} |
624 |
> |
|
625 |
> |
/** |
626 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
627 |
> |
*/ |
628 |
> |
public void testAwaitUninterruptibly() { |
629 |
> |
final ReentrantLock lock = new ReentrantLock(); |
630 |
> |
final Condition c = lock.newCondition(); |
631 |
> |
Thread t = new Thread(new Runnable() { |
632 |
> |
public void run() { |
633 |
> |
lock.lock(); |
634 |
> |
c.awaitUninterruptibly(); |
635 |
> |
lock.unlock(); |
636 |
> |
} |
637 |
> |
}); |
638 |
> |
|
639 |
> |
try { |
640 |
> |
t.start(); |
641 |
> |
Thread.sleep(SHORT_DELAY_MS); |
642 |
> |
t.interrupt(); |
643 |
> |
lock.lock(); |
644 |
> |
c.signal(); |
645 |
> |
lock.unlock(); |
646 |
> |
assert(t.isInterrupted()); |
647 |
> |
t.join(SHORT_DELAY_MS); |
648 |
> |
assertFalse(t.isAlive()); |
649 |
> |
} |
650 |
> |
catch (Exception ex) { |
651 |
> |
unexpectedException(); |
652 |
> |
} |
653 |
> |
} |
654 |
> |
|
655 |
> |
/** |
656 |
> |
* await is interruptible |
657 |
> |
*/ |
658 |
> |
public void testAwait_Interrupt() { |
659 |
> |
final ReentrantLock lock = new ReentrantLock(); |
660 |
> |
final Condition c = lock.newCondition(); |
661 |
> |
Thread t = new Thread(new Runnable() { |
662 |
> |
public void run() { |
663 |
> |
try { |
664 |
> |
lock.lock(); |
665 |
> |
c.await(); |
666 |
> |
lock.unlock(); |
667 |
> |
threadShouldThrow(); |
668 |
> |
} |
669 |
> |
catch(InterruptedException success) { |
670 |
> |
} |
671 |
> |
} |
672 |
> |
}); |
673 |
> |
|
674 |
> |
try { |
675 |
> |
t.start(); |
676 |
> |
Thread.sleep(SHORT_DELAY_MS); |
677 |
> |
t.interrupt(); |
678 |
> |
t.join(SHORT_DELAY_MS); |
679 |
> |
assertFalse(t.isAlive()); |
680 |
> |
} |
681 |
> |
catch (Exception ex) { |
682 |
> |
unexpectedException(); |
683 |
> |
} |
684 |
> |
} |
685 |
> |
|
686 |
> |
/** |
687 |
> |
* awaitNanos is interruptible |
688 |
> |
*/ |
689 |
> |
public void testAwaitNanos_Interrupt() { |
690 |
> |
final ReentrantLock lock = new ReentrantLock(); |
691 |
> |
final Condition c = lock.newCondition(); |
692 |
> |
Thread t = new Thread(new Runnable() { |
693 |
> |
public void run() { |
694 |
> |
try { |
695 |
> |
lock.lock(); |
696 |
> |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
697 |
> |
lock.unlock(); |
698 |
> |
threadShouldThrow(); |
699 |
> |
} |
700 |
> |
catch(InterruptedException success) { |
701 |
> |
} |
702 |
> |
} |
703 |
> |
}); |
704 |
> |
|
705 |
> |
try { |
706 |
> |
t.start(); |
707 |
> |
Thread.sleep(SHORT_DELAY_MS); |
708 |
> |
t.interrupt(); |
709 |
> |
t.join(SHORT_DELAY_MS); |
710 |
> |
assertFalse(t.isAlive()); |
711 |
> |
} |
712 |
> |
catch (Exception ex) { |
713 |
> |
unexpectedException(); |
714 |
> |
} |
715 |
> |
} |
716 |
> |
|
717 |
> |
/** |
718 |
> |
* awaitUntil is interruptible |
719 |
> |
*/ |
720 |
> |
public void testAwaitUntil_Interrupt() { |
721 |
> |
final ReentrantLock lock = new ReentrantLock(); |
722 |
> |
final Condition c = lock.newCondition(); |
723 |
> |
Thread t = new Thread(new Runnable() { |
724 |
> |
public void run() { |
725 |
> |
try { |
726 |
> |
lock.lock(); |
727 |
> |
java.util.Date d = new java.util.Date(); |
728 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
729 |
> |
lock.unlock(); |
730 |
> |
threadShouldThrow(); |
731 |
> |
} |
732 |
> |
catch(InterruptedException success) { |
733 |
> |
} |
734 |
> |
} |
735 |
> |
}); |
736 |
> |
|
737 |
> |
try { |
738 |
> |
t.start(); |
739 |
> |
Thread.sleep(SHORT_DELAY_MS); |
740 |
> |
t.interrupt(); |
741 |
> |
t.join(SHORT_DELAY_MS); |
742 |
> |
assertFalse(t.isAlive()); |
743 |
> |
} |
744 |
> |
catch (Exception ex) { |
745 |
> |
unexpectedException(); |
746 |
> |
} |
747 |
> |
} |
748 |
> |
|
749 |
> |
/** |
750 |
> |
* signalAll wakes up all threads |
751 |
> |
*/ |
752 |
> |
public void testSignalAll() { |
753 |
> |
final ReentrantLock lock = new ReentrantLock(); |
754 |
> |
final Condition c = lock.newCondition(); |
755 |
> |
Thread t1 = new Thread(new Runnable() { |
756 |
> |
public void run() { |
757 |
> |
try { |
758 |
> |
lock.lock(); |
759 |
> |
c.await(); |
760 |
> |
lock.unlock(); |
761 |
> |
} |
762 |
> |
catch(InterruptedException e) { |
763 |
> |
threadUnexpectedException(); |
764 |
> |
} |
765 |
> |
} |
766 |
> |
}); |
767 |
> |
|
768 |
> |
Thread t2 = new Thread(new Runnable() { |
769 |
> |
public void run() { |
770 |
> |
try { |
771 |
> |
lock.lock(); |
772 |
> |
c.await(); |
773 |
> |
lock.unlock(); |
774 |
> |
} |
775 |
> |
catch(InterruptedException e) { |
776 |
> |
threadUnexpectedException(); |
777 |
> |
} |
778 |
> |
} |
779 |
> |
}); |
780 |
> |
|
781 |
> |
try { |
782 |
> |
t1.start(); |
783 |
> |
t2.start(); |
784 |
> |
Thread.sleep(SHORT_DELAY_MS); |
785 |
> |
lock.lock(); |
786 |
> |
c.signalAll(); |
787 |
> |
lock.unlock(); |
788 |
> |
t1.join(SHORT_DELAY_MS); |
789 |
> |
t2.join(SHORT_DELAY_MS); |
790 |
> |
assertFalse(t1.isAlive()); |
791 |
> |
assertFalse(t2.isAlive()); |
792 |
> |
} |
793 |
> |
catch (Exception ex) { |
794 |
> |
unexpectedException(); |
795 |
> |
} |
796 |
> |
} |
797 |
> |
|
798 |
> |
/** |
799 |
> |
* A serialized lock deserializes as unlocked |
800 |
> |
*/ |
801 |
> |
public void testSerialization() { |
802 |
> |
ReentrantLock l = new ReentrantLock(); |
803 |
> |
l.lock(); |
804 |
> |
l.unlock(); |
805 |
> |
|
806 |
> |
try { |
807 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
808 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
809 |
> |
out.writeObject(l); |
810 |
> |
out.close(); |
811 |
> |
|
812 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
813 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
814 |
> |
ReentrantLock r = (ReentrantLock) in.readObject(); |
815 |
> |
r.lock(); |
816 |
> |
r.unlock(); |
817 |
> |
} catch(Exception e){ |
818 |
> |
e.printStackTrace(); |
819 |
> |
unexpectedException(); |
820 |
> |
} |
821 |
|
} |
155 |
– |
|
822 |
|
|
823 |
|
} |