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.io.*; |
12 |
+ |
import java.util.*; |
13 |
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|
14 |
< |
public class ReentrantReadWriteLockTest extends TestCase { |
13 |
< |
static int HOLD_COUNT_TEST_LIMIT = 20; |
14 |
< |
|
14 |
> |
public class ReentrantReadWriteLockTest extends JSR166TestCase { |
15 |
|
public static void main(String[] args) { |
16 |
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junit.textui.TestRunner.run (suite()); |
17 |
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} |
18 |
– |
|
18 |
|
public static Test suite() { |
19 |
|
return new TestSuite(ReentrantReadWriteLockTest.class); |
20 |
|
} |
21 |
|
|
22 |
+ |
/** |
23 |
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* A runnable calling lockInterruptibly |
24 |
+ |
*/ |
25 |
+ |
class InterruptibleLockRunnable implements Runnable { |
26 |
+ |
final ReentrantReadWriteLock lock; |
27 |
+ |
InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
28 |
+ |
public void run() { |
29 |
+ |
try { |
30 |
+ |
lock.writeLock().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 ReentrantReadWriteLock lock; |
42 |
+ |
InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
43 |
+ |
public void run() { |
44 |
+ |
try { |
45 |
+ |
lock.writeLock().lockInterruptibly(); |
46 |
+ |
threadShouldThrow(); |
47 |
+ |
} catch(InterruptedException success){} |
48 |
+ |
} |
49 |
+ |
} |
50 |
+ |
|
51 |
+ |
/** |
52 |
+ |
* Subclass to expose protected methods |
53 |
+ |
*/ |
54 |
+ |
static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock { |
55 |
+ |
PublicReentrantReadWriteLock() { super(); } |
56 |
+ |
public Collection<Thread> getQueuedThreads() { |
57 |
+ |
return super.getQueuedThreads(); |
58 |
+ |
} |
59 |
+ |
public PublicCondition newCondition() { |
60 |
+ |
return new PublicCondition(this); |
61 |
+ |
} |
62 |
+ |
|
63 |
+ |
static class PublicCondition extends AbstractReentrantLock.ConditionObject { |
64 |
+ |
PublicCondition(PublicReentrantReadWriteLock l) { super(l); } |
65 |
+ |
public Collection<Thread> getWaitingThreads() { |
66 |
+ |
return super.getWaitingThreads(); |
67 |
+ |
} |
68 |
+ |
} |
69 |
|
|
70 |
< |
private static long SHORT_DELAY_MS = 100; |
71 |
< |
private static long MEDIUM_DELAY_MS = 1000; |
72 |
< |
private static long LONG_DELAY_MS = 10000; |
73 |
< |
|
28 |
< |
/* |
29 |
< |
* Unlocks an unlocked lock, throws Illegal Monitor State |
30 |
< |
* |
70 |
> |
} |
71 |
> |
|
72 |
> |
/** |
73 |
> |
* Constructor sets given fairness, and is in unlocked state |
74 |
|
*/ |
75 |
+ |
public void testConstructor() { |
76 |
+ |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
77 |
+ |
assertFalse(rl.isFair()); |
78 |
+ |
assertFalse(rl.isWriteLocked()); |
79 |
+ |
assertEquals(0, rl.getReadLocks()); |
80 |
+ |
ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true); |
81 |
+ |
assertTrue(r2.isFair()); |
82 |
+ |
assertFalse(r2.isWriteLocked()); |
83 |
+ |
assertEquals(0, r2.getReadLocks()); |
84 |
+ |
} |
85 |
+ |
|
86 |
+ |
/** |
87 |
+ |
* write-locking and read-locking an unlocked lock succeed |
88 |
+ |
*/ |
89 |
+ |
public void testLock() { |
90 |
+ |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
91 |
+ |
rl.writeLock().lock(); |
92 |
+ |
assertTrue(rl.isWriteLocked()); |
93 |
+ |
assertTrue(rl.isWriteLockedByCurrentThread()); |
94 |
+ |
assertEquals(0, rl.getReadLocks()); |
95 |
+ |
rl.writeLock().unlock(); |
96 |
+ |
assertFalse(rl.isWriteLocked()); |
97 |
+ |
assertFalse(rl.isWriteLockedByCurrentThread()); |
98 |
+ |
assertEquals(0, rl.getReadLocks()); |
99 |
+ |
rl.readLock().lock(); |
100 |
+ |
assertFalse(rl.isWriteLocked()); |
101 |
+ |
assertFalse(rl.isWriteLockedByCurrentThread()); |
102 |
+ |
assertEquals(1, rl.getReadLocks()); |
103 |
+ |
rl.readLock().unlock(); |
104 |
+ |
assertFalse(rl.isWriteLocked()); |
105 |
+ |
assertFalse(rl.isWriteLockedByCurrentThread()); |
106 |
+ |
assertEquals(0, rl.getReadLocks()); |
107 |
+ |
} |
108 |
+ |
|
109 |
+ |
|
110 |
+ |
/** |
111 |
+ |
* locking an unlocked fair lock succeeds |
112 |
+ |
*/ |
113 |
+ |
public void testFairLock() { |
114 |
+ |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true); |
115 |
+ |
rl.writeLock().lock(); |
116 |
+ |
assertTrue(rl.isWriteLocked()); |
117 |
+ |
assertTrue(rl.isWriteLockedByCurrentThread()); |
118 |
+ |
assertEquals(0, rl.getReadLocks()); |
119 |
+ |
rl.writeLock().unlock(); |
120 |
+ |
assertFalse(rl.isWriteLocked()); |
121 |
+ |
assertFalse(rl.isWriteLockedByCurrentThread()); |
122 |
+ |
assertEquals(0, rl.getReadLocks()); |
123 |
+ |
rl.readLock().lock(); |
124 |
+ |
assertFalse(rl.isWriteLocked()); |
125 |
+ |
assertFalse(rl.isWriteLockedByCurrentThread()); |
126 |
+ |
assertEquals(1, rl.getReadLocks()); |
127 |
+ |
rl.readLock().unlock(); |
128 |
+ |
assertFalse(rl.isWriteLocked()); |
129 |
+ |
assertFalse(rl.isWriteLockedByCurrentThread()); |
130 |
+ |
assertEquals(0, rl.getReadLocks()); |
131 |
+ |
} |
132 |
+ |
|
133 |
+ |
/** |
134 |
+ |
* getWriteHoldCount returns number of recursive holds |
135 |
+ |
*/ |
136 |
+ |
public void testGetHoldCount() { |
137 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
138 |
+ |
for(int i = 1; i <= SIZE; i++) { |
139 |
+ |
lock.writeLock().lock(); |
140 |
+ |
assertEquals(i,lock.getWriteHoldCount()); |
141 |
+ |
} |
142 |
+ |
for(int i = SIZE; i > 0; i--) { |
143 |
+ |
lock.writeLock().unlock(); |
144 |
+ |
assertEquals(i-1,lock.getWriteHoldCount()); |
145 |
+ |
} |
146 |
+ |
} |
147 |
|
|
148 |
< |
public void testIllegalMonitorStateException(){ |
148 |
> |
|
149 |
> |
/** |
150 |
> |
* write-unlocking an unlocked lock throws IllegalMonitorStateException |
151 |
> |
*/ |
152 |
> |
public void testUnlock_IllegalMonitorStateException() { |
153 |
|
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
154 |
< |
try{ |
154 |
> |
try { |
155 |
|
rl.writeLock().unlock(); |
156 |
< |
fail("Should of thown Illegal Monitor State Exception"); |
156 |
> |
shouldThrow(); |
157 |
> |
} catch(IllegalMonitorStateException success){} |
158 |
> |
} |
159 |
> |
|
160 |
> |
|
161 |
> |
/** |
162 |
> |
* write-lockInterruptibly is interruptible |
163 |
> |
*/ |
164 |
> |
public void testWriteLockInterruptibly_Interrupted() { |
165 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
166 |
> |
lock.writeLock().lock(); |
167 |
> |
Thread t = new Thread(new Runnable() { |
168 |
> |
public void run() { |
169 |
> |
try { |
170 |
> |
lock.writeLock().lockInterruptibly(); |
171 |
> |
threadShouldThrow(); |
172 |
> |
} catch(InterruptedException success){} |
173 |
> |
} |
174 |
> |
}); |
175 |
> |
try { |
176 |
> |
t.start(); |
177 |
> |
t.interrupt(); |
178 |
> |
lock.writeLock().unlock(); |
179 |
> |
t.join(); |
180 |
> |
} catch(Exception e){ |
181 |
> |
unexpectedException(); |
182 |
> |
} |
183 |
> |
} |
184 |
|
|
185 |
< |
}catch(IllegalMonitorStateException sucess){} |
185 |
> |
/** |
186 |
> |
* timed write-trylock is interruptible |
187 |
> |
*/ |
188 |
> |
public void testWriteTryLock_Interrupted() { |
189 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
190 |
> |
lock.writeLock().lock(); |
191 |
> |
Thread t = new Thread(new Runnable() { |
192 |
> |
public void run() { |
193 |
> |
try { |
194 |
> |
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
195 |
> |
threadShouldThrow(); |
196 |
> |
} catch(InterruptedException success){} |
197 |
> |
} |
198 |
> |
}); |
199 |
> |
try { |
200 |
> |
t.start(); |
201 |
> |
t.interrupt(); |
202 |
> |
lock.writeLock().unlock(); |
203 |
> |
t.join(); |
204 |
> |
} catch(Exception e){ |
205 |
> |
unexpectedException(); |
206 |
> |
} |
207 |
> |
} |
208 |
|
|
209 |
+ |
/** |
210 |
+ |
* read-lockInterruptibly is interruptible |
211 |
+ |
*/ |
212 |
+ |
public void testReadLockInterruptibly_Interrupted() { |
213 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
214 |
+ |
lock.writeLock().lock(); |
215 |
+ |
Thread t = new Thread(new Runnable() { |
216 |
+ |
public void run() { |
217 |
+ |
try { |
218 |
+ |
lock.readLock().lockInterruptibly(); |
219 |
+ |
threadShouldThrow(); |
220 |
+ |
} catch(InterruptedException success){} |
221 |
+ |
} |
222 |
+ |
}); |
223 |
+ |
try { |
224 |
+ |
t.start(); |
225 |
+ |
t.interrupt(); |
226 |
+ |
lock.writeLock().unlock(); |
227 |
+ |
t.join(); |
228 |
+ |
} catch(Exception e){ |
229 |
+ |
unexpectedException(); |
230 |
+ |
} |
231 |
+ |
} |
232 |
|
|
233 |
+ |
/** |
234 |
+ |
* timed read-trylock is interruptible |
235 |
+ |
*/ |
236 |
+ |
public void testReadTryLock_Interrupted() { |
237 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
238 |
+ |
lock.writeLock().lock(); |
239 |
+ |
Thread t = new Thread(new Runnable() { |
240 |
+ |
public void run() { |
241 |
+ |
try { |
242 |
+ |
lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS); |
243 |
+ |
threadShouldThrow(); |
244 |
+ |
} catch(InterruptedException success){} |
245 |
+ |
} |
246 |
+ |
}); |
247 |
+ |
try { |
248 |
+ |
t.start(); |
249 |
+ |
t.interrupt(); |
250 |
+ |
t.join(); |
251 |
+ |
} catch(Exception e){ |
252 |
+ |
unexpectedException(); |
253 |
+ |
} |
254 |
|
} |
255 |
+ |
|
256 |
|
|
257 |
< |
/* |
258 |
< |
* makes a lock, locks it, tries to aquire the lock in another thread |
46 |
< |
* interrupts that thread and waits for an interrupted Exception to |
47 |
< |
* be thrown. |
257 |
> |
/** |
258 |
> |
* write-trylock fails if locked |
259 |
|
*/ |
260 |
+ |
public void testWriteTryLockWhenLocked() { |
261 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
262 |
+ |
lock.writeLock().lock(); |
263 |
+ |
Thread t = new Thread(new Runnable() { |
264 |
+ |
public void run() { |
265 |
+ |
threadAssertFalse(lock.writeLock().tryLock()); |
266 |
+ |
} |
267 |
+ |
}); |
268 |
+ |
try { |
269 |
+ |
t.start(); |
270 |
+ |
t.join(); |
271 |
+ |
lock.writeLock().unlock(); |
272 |
+ |
} catch(Exception e){ |
273 |
+ |
unexpectedException(); |
274 |
+ |
} |
275 |
+ |
} |
276 |
|
|
277 |
< |
public void testInterruptedException(){ |
277 |
> |
/** |
278 |
> |
* read-trylock fails if locked |
279 |
> |
*/ |
280 |
> |
public void testReadTryLockWhenLocked() { |
281 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
282 |
|
lock.writeLock().lock(); |
283 |
|
Thread t = new Thread(new Runnable() { |
284 |
< |
public void run(){ |
285 |
< |
try{ |
286 |
< |
lock.writeLock().lockInterruptibly(); |
287 |
< |
fail("should throw"); |
288 |
< |
}catch(InterruptedException sucess){} |
284 |
> |
public void run() { |
285 |
> |
threadAssertFalse(lock.readLock().tryLock()); |
286 |
> |
} |
287 |
> |
}); |
288 |
> |
try { |
289 |
> |
t.start(); |
290 |
> |
t.join(); |
291 |
> |
lock.writeLock().unlock(); |
292 |
> |
} catch(Exception e){ |
293 |
> |
unexpectedException(); |
294 |
> |
} |
295 |
> |
} |
296 |
> |
|
297 |
> |
/** |
298 |
> |
* Multiple threads can hold a read lock when not write-locked |
299 |
> |
*/ |
300 |
> |
public void testMultipleReadLocks() { |
301 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
302 |
> |
lock.readLock().lock(); |
303 |
> |
Thread t = new Thread(new Runnable() { |
304 |
> |
public void run() { |
305 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
306 |
> |
lock.readLock().unlock(); |
307 |
> |
} |
308 |
> |
}); |
309 |
> |
try { |
310 |
> |
t.start(); |
311 |
> |
t.join(); |
312 |
> |
lock.readLock().unlock(); |
313 |
> |
} catch(Exception e){ |
314 |
> |
unexpectedException(); |
315 |
> |
} |
316 |
> |
} |
317 |
> |
|
318 |
> |
/** |
319 |
> |
* A writelock succeeds after reading threads unlock |
320 |
> |
*/ |
321 |
> |
public void testWriteAfterMultipleReadLocks() { |
322 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
323 |
> |
lock.readLock().lock(); |
324 |
> |
Thread t1 = new Thread(new Runnable() { |
325 |
> |
public void run() { |
326 |
> |
lock.readLock().lock(); |
327 |
> |
lock.readLock().unlock(); |
328 |
> |
} |
329 |
> |
}); |
330 |
> |
Thread t2 = new Thread(new Runnable() { |
331 |
> |
public void run() { |
332 |
> |
lock.writeLock().lock(); |
333 |
> |
lock.writeLock().unlock(); |
334 |
|
} |
335 |
|
}); |
336 |
< |
t.start(); |
337 |
< |
t.interrupt(); |
338 |
< |
lock.writeLock().unlock(); |
336 |
> |
|
337 |
> |
try { |
338 |
> |
t1.start(); |
339 |
> |
t2.start(); |
340 |
> |
Thread.sleep(SHORT_DELAY_MS); |
341 |
> |
lock.readLock().unlock(); |
342 |
> |
t1.join(MEDIUM_DELAY_MS); |
343 |
> |
t2.join(MEDIUM_DELAY_MS); |
344 |
> |
assertTrue(!t1.isAlive()); |
345 |
> |
assertTrue(!t2.isAlive()); |
346 |
> |
|
347 |
> |
} catch(Exception e){ |
348 |
> |
unexpectedException(); |
349 |
> |
} |
350 |
|
} |
351 |
|
|
352 |
< |
/* |
353 |
< |
* tests for interrupted exception on a timed wait |
354 |
< |
* |
352 |
> |
/** |
353 |
> |
* Readlocks succeed after a writing thread unlocks |
354 |
> |
*/ |
355 |
> |
public void testReadAfterWriteLock() { |
356 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
357 |
> |
lock.writeLock().lock(); |
358 |
> |
Thread t1 = new Thread(new Runnable() { |
359 |
> |
public void run() { |
360 |
> |
lock.readLock().lock(); |
361 |
> |
lock.readLock().unlock(); |
362 |
> |
} |
363 |
> |
}); |
364 |
> |
Thread t2 = new Thread(new Runnable() { |
365 |
> |
public void run() { |
366 |
> |
lock.readLock().lock(); |
367 |
> |
lock.readLock().unlock(); |
368 |
> |
} |
369 |
> |
}); |
370 |
> |
|
371 |
> |
try { |
372 |
> |
t1.start(); |
373 |
> |
t2.start(); |
374 |
> |
Thread.sleep(SHORT_DELAY_MS); |
375 |
> |
lock.writeLock().unlock(); |
376 |
> |
t1.join(MEDIUM_DELAY_MS); |
377 |
> |
t2.join(MEDIUM_DELAY_MS); |
378 |
> |
assertTrue(!t1.isAlive()); |
379 |
> |
assertTrue(!t2.isAlive()); |
380 |
> |
|
381 |
> |
} catch(Exception e){ |
382 |
> |
unexpectedException(); |
383 |
> |
} |
384 |
> |
} |
385 |
> |
|
386 |
> |
|
387 |
> |
/** |
388 |
> |
* Read trylock succeeds if readlocked but not writelocked |
389 |
> |
*/ |
390 |
> |
public void testTryLockWhenReadLocked() { |
391 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
392 |
> |
lock.readLock().lock(); |
393 |
> |
Thread t = new Thread(new Runnable() { |
394 |
> |
public void run() { |
395 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
396 |
> |
lock.readLock().unlock(); |
397 |
> |
} |
398 |
> |
}); |
399 |
> |
try { |
400 |
> |
t.start(); |
401 |
> |
t.join(); |
402 |
> |
lock.readLock().unlock(); |
403 |
> |
} catch(Exception e){ |
404 |
> |
unexpectedException(); |
405 |
> |
} |
406 |
> |
} |
407 |
> |
|
408 |
> |
|
409 |
> |
|
410 |
> |
/** |
411 |
> |
* write trylock fails when readlocked |
412 |
|
*/ |
413 |
+ |
public void testWriteTryLockWhenReadLocked() { |
414 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
415 |
+ |
lock.readLock().lock(); |
416 |
+ |
Thread t = new Thread(new Runnable() { |
417 |
+ |
public void run() { |
418 |
+ |
threadAssertFalse(lock.writeLock().tryLock()); |
419 |
+ |
} |
420 |
+ |
}); |
421 |
+ |
try { |
422 |
+ |
t.start(); |
423 |
+ |
t.join(); |
424 |
+ |
lock.readLock().unlock(); |
425 |
+ |
} catch(Exception e){ |
426 |
+ |
unexpectedException(); |
427 |
+ |
} |
428 |
+ |
} |
429 |
+ |
|
430 |
|
|
431 |
|
|
432 |
< |
public void testInterruptedException2(){ |
432 |
> |
/** |
433 |
> |
* write timed trylock times out if locked |
434 |
> |
*/ |
435 |
> |
public void testWriteTryLock_Timeout() { |
436 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
437 |
|
lock.writeLock().lock(); |
438 |
|
Thread t = new Thread(new Runnable() { |
439 |
< |
public void run(){ |
440 |
< |
try{ |
441 |
< |
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
442 |
< |
fail("should throw"); |
443 |
< |
}catch(InterruptedException sucess){} |
439 |
> |
public void run() { |
440 |
> |
try { |
441 |
> |
threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS)); |
442 |
> |
} catch (Exception ex) { |
443 |
> |
threadUnexpectedException(); |
444 |
> |
} |
445 |
> |
} |
446 |
> |
}); |
447 |
> |
try { |
448 |
> |
t.start(); |
449 |
> |
t.join(); |
450 |
> |
lock.writeLock().unlock(); |
451 |
> |
} catch(Exception e){ |
452 |
> |
unexpectedException(); |
453 |
> |
} |
454 |
> |
} |
455 |
> |
|
456 |
> |
/** |
457 |
> |
* read timed trylock times out if write-locked |
458 |
> |
*/ |
459 |
> |
public void testReadTryLock_Timeout() { |
460 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
461 |
> |
lock.writeLock().lock(); |
462 |
> |
Thread t = new Thread(new Runnable() { |
463 |
> |
public void run() { |
464 |
> |
try { |
465 |
> |
threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS)); |
466 |
> |
} catch (Exception ex) { |
467 |
> |
threadUnexpectedException(); |
468 |
> |
} |
469 |
|
} |
470 |
|
}); |
471 |
< |
t.start(); |
472 |
< |
t.interrupt(); |
471 |
> |
try { |
472 |
> |
t.start(); |
473 |
> |
t.join(); |
474 |
> |
lock.writeLock().unlock(); |
475 |
> |
} catch(Exception e){ |
476 |
> |
unexpectedException(); |
477 |
> |
} |
478 |
> |
} |
479 |
> |
|
480 |
> |
|
481 |
> |
/** |
482 |
> |
* write lockInterruptibly succeeds if lock free else is interruptible |
483 |
> |
*/ |
484 |
> |
public void testWriteLockInterruptibly() { |
485 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
486 |
> |
try { |
487 |
> |
lock.writeLock().lockInterruptibly(); |
488 |
> |
} catch(Exception e) { |
489 |
> |
unexpectedException(); |
490 |
> |
} |
491 |
> |
Thread t = new Thread(new Runnable() { |
492 |
> |
public void run() { |
493 |
> |
try { |
494 |
> |
lock.writeLock().lockInterruptibly(); |
495 |
> |
threadShouldThrow(); |
496 |
> |
} |
497 |
> |
catch(InterruptedException success) { |
498 |
> |
} |
499 |
> |
} |
500 |
> |
}); |
501 |
> |
try { |
502 |
> |
t.start(); |
503 |
> |
t.interrupt(); |
504 |
> |
t.join(); |
505 |
> |
lock.writeLock().unlock(); |
506 |
> |
} catch(Exception e){ |
507 |
> |
unexpectedException(); |
508 |
> |
} |
509 |
|
} |
510 |
|
|
511 |
< |
|
511 |
> |
/** |
512 |
> |
* read lockInterruptibly succeeds if lock free else is interruptible |
513 |
> |
*/ |
514 |
> |
public void testReadLockInterruptibly() { |
515 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
516 |
> |
try { |
517 |
> |
lock.writeLock().lockInterruptibly(); |
518 |
> |
} catch(Exception e) { |
519 |
> |
unexpectedException(); |
520 |
> |
} |
521 |
> |
Thread t = new Thread(new Runnable() { |
522 |
> |
public void run() { |
523 |
> |
try { |
524 |
> |
lock.readLock().lockInterruptibly(); |
525 |
> |
threadShouldThrow(); |
526 |
> |
} |
527 |
> |
catch(InterruptedException success) { |
528 |
> |
} |
529 |
> |
} |
530 |
> |
}); |
531 |
> |
try { |
532 |
> |
t.start(); |
533 |
> |
t.interrupt(); |
534 |
> |
t.join(); |
535 |
> |
lock.writeLock().unlock(); |
536 |
> |
} catch(Exception e){ |
537 |
> |
unexpectedException(); |
538 |
> |
} |
539 |
> |
} |
540 |
> |
|
541 |
> |
/** |
542 |
> |
* Calling await without holding lock throws IllegalMonitorStateException |
543 |
> |
*/ |
544 |
> |
public void testAwait_IllegalMonitor() { |
545 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
546 |
> |
final Condition c = lock.writeLock().newCondition(); |
547 |
> |
try { |
548 |
> |
c.await(); |
549 |
> |
shouldThrow(); |
550 |
> |
} |
551 |
> |
catch (IllegalMonitorStateException success) { |
552 |
> |
} |
553 |
> |
catch (Exception ex) { |
554 |
> |
shouldThrow(); |
555 |
> |
} |
556 |
> |
} |
557 |
|
|
558 |
< |
/* |
559 |
< |
* current thread locks interruptibly the thread |
91 |
< |
* another thread tries to aquire the lock and blocks |
92 |
< |
* on the call. interrupt the attempted aquireLock |
93 |
< |
* assert that the first lock() call actually locked the lock |
94 |
< |
* assert that the current thread is the one holding the lock |
558 |
> |
/** |
559 |
> |
* Calling signal without holding lock throws IllegalMonitorStateException |
560 |
|
*/ |
561 |
+ |
public void testSignal_IllegalMonitor() { |
562 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
563 |
+ |
final Condition c = lock.writeLock().newCondition(); |
564 |
+ |
try { |
565 |
+ |
c.signal(); |
566 |
+ |
shouldThrow(); |
567 |
+ |
} |
568 |
+ |
catch (IllegalMonitorStateException success) { |
569 |
+ |
} |
570 |
+ |
catch (Exception ex) { |
571 |
+ |
unexpectedException(); |
572 |
+ |
} |
573 |
+ |
} |
574 |
|
|
575 |
< |
public void testLockedInterruptibly() { |
575 |
> |
/** |
576 |
> |
* awaitNanos without a signal times out |
577 |
> |
*/ |
578 |
> |
public void testAwaitNanos_Timeout() { |
579 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
580 |
< |
try {lock.writeLock().lockInterruptibly();} catch(Exception e) {} |
580 |
> |
final Condition c = lock.writeLock().newCondition(); |
581 |
> |
try { |
582 |
> |
lock.writeLock().lock(); |
583 |
> |
long t = c.awaitNanos(100); |
584 |
> |
assertTrue(t <= 0); |
585 |
> |
lock.writeLock().unlock(); |
586 |
> |
} |
587 |
> |
catch (Exception ex) { |
588 |
> |
unexpectedException(); |
589 |
> |
} |
590 |
> |
} |
591 |
> |
|
592 |
> |
|
593 |
> |
/** |
594 |
> |
* timed await without a signal times out |
595 |
> |
*/ |
596 |
> |
public void testAwait_Timeout() { |
597 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
598 |
> |
final Condition c = lock.writeLock().newCondition(); |
599 |
> |
try { |
600 |
> |
lock.writeLock().lock(); |
601 |
> |
assertFalse(c.await(10, TimeUnit.MILLISECONDS)); |
602 |
> |
lock.writeLock().unlock(); |
603 |
> |
} |
604 |
> |
catch (Exception ex) { |
605 |
> |
unexpectedException(); |
606 |
> |
} |
607 |
> |
} |
608 |
> |
|
609 |
> |
/** |
610 |
> |
* awaitUntil without a signal times out |
611 |
> |
*/ |
612 |
> |
public void testAwaitUntil_Timeout() { |
613 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
614 |
> |
final Condition c = lock.writeLock().newCondition(); |
615 |
> |
try { |
616 |
> |
lock.writeLock().lock(); |
617 |
> |
java.util.Date d = new java.util.Date(); |
618 |
> |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
619 |
> |
lock.writeLock().unlock(); |
620 |
> |
} |
621 |
> |
catch (Exception ex) { |
622 |
> |
unexpectedException(); |
623 |
> |
} |
624 |
> |
} |
625 |
> |
|
626 |
> |
/** |
627 |
> |
* await returns when signalled |
628 |
> |
*/ |
629 |
> |
public void testAwait() { |
630 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
631 |
> |
final Condition c = lock.writeLock().newCondition(); |
632 |
|
Thread t = new Thread(new Runnable() { |
633 |
|
public void run() { |
634 |
|
try { |
635 |
< |
lock.writeLock().lockInterruptibly(); |
636 |
< |
fail("Failed to generate an Interrupted Exception"); |
635 |
> |
lock.writeLock().lock(); |
636 |
> |
c.await(); |
637 |
> |
lock.writeLock().unlock(); |
638 |
|
} |
639 |
< |
catch(InterruptedException e) {} |
639 |
> |
catch(InterruptedException e) { |
640 |
> |
threadUnexpectedException(); |
641 |
> |
} |
642 |
|
} |
643 |
|
}); |
644 |
< |
t.start(); |
645 |
< |
t.interrupt(); |
644 |
> |
|
645 |
> |
try { |
646 |
> |
t.start(); |
647 |
> |
Thread.sleep(SHORT_DELAY_MS); |
648 |
> |
lock.writeLock().lock(); |
649 |
> |
c.signal(); |
650 |
> |
lock.writeLock().unlock(); |
651 |
> |
t.join(SHORT_DELAY_MS); |
652 |
> |
assertFalse(t.isAlive()); |
653 |
> |
} |
654 |
> |
catch (Exception ex) { |
655 |
> |
unexpectedException(); |
656 |
> |
} |
657 |
> |
} |
658 |
> |
|
659 |
> |
/** |
660 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
661 |
> |
*/ |
662 |
> |
public void testAwaitUninterruptibly() { |
663 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
664 |
> |
final Condition c = lock.writeLock().newCondition(); |
665 |
> |
Thread t = new Thread(new Runnable() { |
666 |
> |
public void run() { |
667 |
> |
lock.writeLock().lock(); |
668 |
> |
c.awaitUninterruptibly(); |
669 |
> |
lock.writeLock().unlock(); |
670 |
> |
} |
671 |
> |
}); |
672 |
> |
|
673 |
> |
try { |
674 |
> |
t.start(); |
675 |
> |
Thread.sleep(SHORT_DELAY_MS); |
676 |
> |
t.interrupt(); |
677 |
> |
lock.writeLock().lock(); |
678 |
> |
c.signal(); |
679 |
> |
lock.writeLock().unlock(); |
680 |
> |
assert(t.isInterrupted()); |
681 |
> |
t.join(SHORT_DELAY_MS); |
682 |
> |
assertFalse(t.isAlive()); |
683 |
> |
} |
684 |
> |
catch (Exception ex) { |
685 |
> |
unexpectedException(); |
686 |
> |
} |
687 |
> |
} |
688 |
> |
|
689 |
> |
/** |
690 |
> |
* await is interruptible |
691 |
> |
*/ |
692 |
> |
public void testAwait_Interrupt() { |
693 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
694 |
> |
final Condition c = lock.writeLock().newCondition(); |
695 |
> |
Thread t = new Thread(new Runnable() { |
696 |
> |
public void run() { |
697 |
> |
try { |
698 |
> |
lock.writeLock().lock(); |
699 |
> |
c.await(); |
700 |
> |
lock.writeLock().unlock(); |
701 |
> |
threadShouldThrow(); |
702 |
> |
} |
703 |
> |
catch(InterruptedException success) { |
704 |
> |
} |
705 |
> |
} |
706 |
> |
}); |
707 |
> |
|
708 |
> |
try { |
709 |
> |
t.start(); |
710 |
> |
Thread.sleep(SHORT_DELAY_MS); |
711 |
> |
t.interrupt(); |
712 |
> |
t.join(SHORT_DELAY_MS); |
713 |
> |
assertFalse(t.isAlive()); |
714 |
> |
} |
715 |
> |
catch (Exception ex) { |
716 |
> |
unexpectedException(); |
717 |
> |
} |
718 |
> |
} |
719 |
> |
|
720 |
> |
/** |
721 |
> |
* awaitNanos is interruptible |
722 |
> |
*/ |
723 |
> |
public void testAwaitNanos_Interrupt() { |
724 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
725 |
> |
final Condition c = lock.writeLock().newCondition(); |
726 |
> |
Thread t = new Thread(new Runnable() { |
727 |
> |
public void run() { |
728 |
> |
try { |
729 |
> |
lock.writeLock().lock(); |
730 |
> |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
731 |
> |
lock.writeLock().unlock(); |
732 |
> |
threadShouldThrow(); |
733 |
> |
} |
734 |
> |
catch(InterruptedException success) { |
735 |
> |
} |
736 |
> |
} |
737 |
> |
}); |
738 |
> |
|
739 |
> |
try { |
740 |
> |
t.start(); |
741 |
> |
Thread.sleep(SHORT_DELAY_MS); |
742 |
> |
t.interrupt(); |
743 |
> |
t.join(SHORT_DELAY_MS); |
744 |
> |
assertFalse(t.isAlive()); |
745 |
> |
} |
746 |
> |
catch (Exception ex) { |
747 |
> |
unexpectedException(); |
748 |
> |
} |
749 |
> |
} |
750 |
> |
|
751 |
> |
/** |
752 |
> |
* awaitUntil is interruptible |
753 |
> |
*/ |
754 |
> |
public void testAwaitUntil_Interrupt() { |
755 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
756 |
> |
final Condition c = lock.writeLock().newCondition(); |
757 |
> |
Thread t = new Thread(new Runnable() { |
758 |
> |
public void run() { |
759 |
> |
try { |
760 |
> |
lock.writeLock().lock(); |
761 |
> |
java.util.Date d = new java.util.Date(); |
762 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
763 |
> |
lock.writeLock().unlock(); |
764 |
> |
threadShouldThrow(); |
765 |
> |
} |
766 |
> |
catch(InterruptedException success) { |
767 |
> |
} |
768 |
> |
} |
769 |
> |
}); |
770 |
> |
|
771 |
> |
try { |
772 |
> |
t.start(); |
773 |
> |
Thread.sleep(SHORT_DELAY_MS); |
774 |
> |
t.interrupt(); |
775 |
> |
t.join(SHORT_DELAY_MS); |
776 |
> |
assertFalse(t.isAlive()); |
777 |
> |
} |
778 |
> |
catch (Exception ex) { |
779 |
> |
unexpectedException(); |
780 |
> |
} |
781 |
> |
} |
782 |
> |
|
783 |
> |
/** |
784 |
> |
* signalAll wakes up all threads |
785 |
> |
*/ |
786 |
> |
public void testSignalAll() { |
787 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
788 |
> |
final Condition c = lock.writeLock().newCondition(); |
789 |
> |
Thread t1 = new Thread(new Runnable() { |
790 |
> |
public void run() { |
791 |
> |
try { |
792 |
> |
lock.writeLock().lock(); |
793 |
> |
c.await(); |
794 |
> |
lock.writeLock().unlock(); |
795 |
> |
} |
796 |
> |
catch(InterruptedException e) { |
797 |
> |
threadUnexpectedException(); |
798 |
> |
} |
799 |
> |
} |
800 |
> |
}); |
801 |
> |
|
802 |
> |
Thread t2 = new Thread(new Runnable() { |
803 |
> |
public void run() { |
804 |
> |
try { |
805 |
> |
lock.writeLock().lock(); |
806 |
> |
c.await(); |
807 |
> |
lock.writeLock().unlock(); |
808 |
> |
} |
809 |
> |
catch(InterruptedException e) { |
810 |
> |
threadUnexpectedException(); |
811 |
> |
} |
812 |
> |
} |
813 |
> |
}); |
814 |
> |
|
815 |
> |
try { |
816 |
> |
t1.start(); |
817 |
> |
t2.start(); |
818 |
> |
Thread.sleep(SHORT_DELAY_MS); |
819 |
> |
lock.writeLock().lock(); |
820 |
> |
c.signalAll(); |
821 |
> |
lock.writeLock().unlock(); |
822 |
> |
t1.join(SHORT_DELAY_MS); |
823 |
> |
t2.join(SHORT_DELAY_MS); |
824 |
> |
assertFalse(t1.isAlive()); |
825 |
> |
assertFalse(t2.isAlive()); |
826 |
> |
} |
827 |
> |
catch (Exception ex) { |
828 |
> |
unexpectedException(); |
829 |
> |
} |
830 |
> |
} |
831 |
> |
|
832 |
> |
/** |
833 |
> |
* A serialized lock deserializes as unlocked |
834 |
> |
*/ |
835 |
> |
public void testSerialization() { |
836 |
> |
ReentrantReadWriteLock l = new ReentrantReadWriteLock(); |
837 |
> |
l.readLock().lock(); |
838 |
> |
l.readLock().unlock(); |
839 |
> |
|
840 |
> |
try { |
841 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
842 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
843 |
> |
out.writeObject(l); |
844 |
> |
out.close(); |
845 |
> |
|
846 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
847 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
848 |
> |
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
849 |
> |
r.readLock().lock(); |
850 |
> |
r.readLock().unlock(); |
851 |
> |
} catch(Exception e){ |
852 |
> |
e.printStackTrace(); |
853 |
> |
unexpectedException(); |
854 |
> |
} |
855 |
> |
} |
856 |
> |
|
857 |
> |
/** |
858 |
> |
* getQueueLength reports number of waiting threads |
859 |
> |
*/ |
860 |
> |
public void testGetQueueLength() { |
861 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
862 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
863 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
864 |
> |
try { |
865 |
> |
assertEquals(0, lock.getQueueLength()); |
866 |
> |
lock.writeLock().lock(); |
867 |
> |
t1.start(); |
868 |
> |
Thread.sleep(SHORT_DELAY_MS); |
869 |
> |
assertEquals(1, lock.getQueueLength()); |
870 |
> |
t2.start(); |
871 |
> |
Thread.sleep(SHORT_DELAY_MS); |
872 |
> |
assertEquals(2, lock.getQueueLength()); |
873 |
> |
t1.interrupt(); |
874 |
> |
Thread.sleep(SHORT_DELAY_MS); |
875 |
> |
assertEquals(1, lock.getQueueLength()); |
876 |
> |
lock.writeLock().unlock(); |
877 |
> |
Thread.sleep(SHORT_DELAY_MS); |
878 |
> |
assertEquals(0, lock.getQueueLength()); |
879 |
> |
t1.join(); |
880 |
> |
t2.join(); |
881 |
> |
} catch(Exception e){ |
882 |
> |
unexpectedException(); |
883 |
> |
} |
884 |
> |
} |
885 |
> |
|
886 |
> |
/** |
887 |
> |
* getQueuedThreads includes waiting threads |
888 |
> |
*/ |
889 |
> |
public void testGetQueuedThreads() { |
890 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
891 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
892 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
893 |
> |
try { |
894 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
895 |
> |
lock.writeLock().lock(); |
896 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
897 |
> |
t1.start(); |
898 |
> |
Thread.sleep(SHORT_DELAY_MS); |
899 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
900 |
> |
t2.start(); |
901 |
> |
Thread.sleep(SHORT_DELAY_MS); |
902 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
903 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
904 |
> |
t1.interrupt(); |
905 |
> |
Thread.sleep(SHORT_DELAY_MS); |
906 |
> |
assertFalse(lock.getQueuedThreads().contains(t1)); |
907 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
908 |
> |
lock.writeLock().unlock(); |
909 |
> |
Thread.sleep(SHORT_DELAY_MS); |
910 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
911 |
> |
t1.join(); |
912 |
> |
t2.join(); |
913 |
> |
} catch(Exception e){ |
914 |
> |
unexpectedException(); |
915 |
> |
} |
916 |
> |
} |
917 |
> |
|
918 |
> |
/** |
919 |
> |
* hasWaiters returns true when a thread is waiting, else false |
920 |
> |
*/ |
921 |
> |
public void testHasWaiters() { |
922 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
923 |
> |
final AbstractReentrantLock.ConditionObject c = (AbstractReentrantLock.ConditionObject)(lock.writeLock().newCondition()); |
924 |
> |
Thread t = new Thread(new Runnable() { |
925 |
> |
public void run() { |
926 |
> |
try { |
927 |
> |
lock.writeLock().lock(); |
928 |
> |
threadAssertFalse(c.hasWaiters()); |
929 |
> |
threadAssertEquals(0, c.getWaitQueueLength()); |
930 |
> |
c.await(); |
931 |
> |
lock.writeLock().unlock(); |
932 |
> |
} |
933 |
> |
catch(InterruptedException e) { |
934 |
> |
threadUnexpectedException(); |
935 |
> |
} |
936 |
> |
} |
937 |
> |
}); |
938 |
> |
|
939 |
> |
try { |
940 |
> |
t.start(); |
941 |
> |
Thread.sleep(SHORT_DELAY_MS); |
942 |
> |
lock.writeLock().lock(); |
943 |
> |
assertTrue(c.hasWaiters()); |
944 |
> |
assertEquals(1, c.getWaitQueueLength()); |
945 |
> |
c.signal(); |
946 |
> |
lock.writeLock().unlock(); |
947 |
> |
Thread.sleep(SHORT_DELAY_MS); |
948 |
> |
lock.writeLock().lock(); |
949 |
> |
assertFalse(c.hasWaiters()); |
950 |
> |
assertEquals(0, c.getWaitQueueLength()); |
951 |
> |
lock.writeLock().unlock(); |
952 |
> |
t.join(SHORT_DELAY_MS); |
953 |
> |
assertFalse(t.isAlive()); |
954 |
> |
} |
955 |
> |
catch (Exception ex) { |
956 |
> |
unexpectedException(); |
957 |
> |
} |
958 |
> |
} |
959 |
> |
|
960 |
> |
/** |
961 |
> |
* getWaitQueueLength returns number of waiting threads |
962 |
> |
*/ |
963 |
> |
public void testGetWaitQueueLength() { |
964 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
965 |
> |
final AbstractReentrantLock.ConditionObject c = (AbstractReentrantLock.ConditionObject)(lock.writeLock().newCondition()); |
966 |
> |
Thread t1 = new Thread(new Runnable() { |
967 |
> |
public void run() { |
968 |
> |
try { |
969 |
> |
lock.writeLock().lock(); |
970 |
> |
threadAssertFalse(c.hasWaiters()); |
971 |
> |
threadAssertEquals(0, c.getWaitQueueLength()); |
972 |
> |
c.await(); |
973 |
> |
lock.writeLock().unlock(); |
974 |
> |
} |
975 |
> |
catch(InterruptedException e) { |
976 |
> |
threadUnexpectedException(); |
977 |
> |
} |
978 |
> |
} |
979 |
> |
}); |
980 |
> |
|
981 |
> |
Thread t2 = new Thread(new Runnable() { |
982 |
> |
public void run() { |
983 |
> |
try { |
984 |
> |
lock.writeLock().lock(); |
985 |
> |
threadAssertTrue(c.hasWaiters()); |
986 |
> |
threadAssertEquals(1, c.getWaitQueueLength()); |
987 |
> |
c.await(); |
988 |
> |
lock.writeLock().unlock(); |
989 |
> |
} |
990 |
> |
catch(InterruptedException e) { |
991 |
> |
threadUnexpectedException(); |
992 |
> |
} |
993 |
> |
} |
994 |
> |
}); |
995 |
> |
|
996 |
> |
try { |
997 |
> |
t1.start(); |
998 |
> |
Thread.sleep(SHORT_DELAY_MS); |
999 |
> |
t2.start(); |
1000 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1001 |
> |
lock.writeLock().lock(); |
1002 |
> |
assertTrue(c.hasWaiters()); |
1003 |
> |
assertEquals(2, c.getWaitQueueLength()); |
1004 |
> |
c.signalAll(); |
1005 |
> |
lock.writeLock().unlock(); |
1006 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1007 |
> |
lock.writeLock().lock(); |
1008 |
> |
assertFalse(c.hasWaiters()); |
1009 |
> |
assertEquals(0, c.getWaitQueueLength()); |
1010 |
> |
lock.writeLock().unlock(); |
1011 |
> |
t1.join(SHORT_DELAY_MS); |
1012 |
> |
t2.join(SHORT_DELAY_MS); |
1013 |
> |
assertFalse(t1.isAlive()); |
1014 |
> |
assertFalse(t2.isAlive()); |
1015 |
> |
} |
1016 |
> |
catch (Exception ex) { |
1017 |
> |
unexpectedException(); |
1018 |
> |
} |
1019 |
> |
} |
1020 |
> |
|
1021 |
> |
/** |
1022 |
> |
* getWaitingThreads returns only and all waiting threads |
1023 |
> |
*/ |
1024 |
> |
public void testGetWaitingThreads() { |
1025 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1026 |
> |
final PublicReentrantReadWriteLock.PublicCondition c = (PublicReentrantReadWriteLock.PublicCondition)lock.newCondition(); |
1027 |
> |
Thread t1 = new Thread(new Runnable() { |
1028 |
> |
public void run() { |
1029 |
> |
try { |
1030 |
> |
lock.writeLock().lock(); |
1031 |
> |
threadAssertTrue(c.getWaitingThreads().isEmpty()); |
1032 |
> |
c.await(); |
1033 |
> |
lock.writeLock().unlock(); |
1034 |
> |
} |
1035 |
> |
catch(InterruptedException e) { |
1036 |
> |
threadUnexpectedException(); |
1037 |
> |
} |
1038 |
> |
} |
1039 |
> |
}); |
1040 |
> |
|
1041 |
> |
Thread t2 = new Thread(new Runnable() { |
1042 |
> |
public void run() { |
1043 |
> |
try { |
1044 |
> |
lock.writeLock().lock(); |
1045 |
> |
threadAssertFalse(c.getWaitingThreads().isEmpty()); |
1046 |
> |
c.await(); |
1047 |
> |
lock.writeLock().unlock(); |
1048 |
> |
} |
1049 |
> |
catch(InterruptedException e) { |
1050 |
> |
threadUnexpectedException(); |
1051 |
> |
} |
1052 |
> |
} |
1053 |
> |
}); |
1054 |
> |
|
1055 |
> |
try { |
1056 |
> |
lock.writeLock().lock(); |
1057 |
> |
assertTrue(c.getWaitingThreads().isEmpty()); |
1058 |
> |
lock.writeLock().unlock(); |
1059 |
> |
t1.start(); |
1060 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1061 |
> |
t2.start(); |
1062 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1063 |
> |
lock.writeLock().lock(); |
1064 |
> |
assertTrue(c.hasWaiters()); |
1065 |
> |
assertTrue(c.getWaitingThreads().contains(t1)); |
1066 |
> |
assertTrue(c.getWaitingThreads().contains(t2)); |
1067 |
> |
c.signalAll(); |
1068 |
> |
lock.writeLock().unlock(); |
1069 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1070 |
> |
lock.writeLock().lock(); |
1071 |
> |
assertFalse(c.hasWaiters()); |
1072 |
> |
assertTrue(c.getWaitingThreads().isEmpty()); |
1073 |
> |
lock.writeLock().unlock(); |
1074 |
> |
t1.join(SHORT_DELAY_MS); |
1075 |
> |
t2.join(SHORT_DELAY_MS); |
1076 |
> |
assertFalse(t1.isAlive()); |
1077 |
> |
assertFalse(t2.isAlive()); |
1078 |
> |
} |
1079 |
> |
catch (Exception ex) { |
1080 |
> |
unexpectedException(); |
1081 |
> |
} |
1082 |
|
} |
112 |
– |
|
1083 |
|
|
1084 |
|
} |