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. |
2 |
> |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
> |
* Expert Group and released to the public domain, as explained at |
4 |
> |
* http://creativecommons.org/licenses/publicdomain |
5 |
> |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
> |
* Pat Fisher, Mike Judd. |
7 |
|
*/ |
8 |
|
|
9 |
|
import junit.framework.*; |
10 |
|
import java.util.concurrent.locks.*; |
11 |
|
import java.util.concurrent.*; |
12 |
|
import java.io.*; |
13 |
+ |
import java.util.*; |
14 |
|
|
15 |
< |
public class ReentrantReadWriteLockTest extends TestCase { |
14 |
< |
static int HOLD_COUNT_TEST_LIMIT = 20; |
15 |
< |
|
15 |
> |
public class ReentrantReadWriteLockTest extends JSR166TestCase { |
16 |
|
public static void main(String[] args) { |
17 |
|
junit.textui.TestRunner.run (suite()); |
18 |
|
} |
19 |
– |
|
19 |
|
public static Test suite() { |
20 |
|
return new TestSuite(ReentrantReadWriteLockTest.class); |
21 |
|
} |
22 |
|
|
23 |
+ |
/** |
24 |
+ |
* A runnable calling lockInterruptibly |
25 |
+ |
*/ |
26 |
+ |
class InterruptibleLockRunnable implements Runnable { |
27 |
+ |
final ReentrantReadWriteLock lock; |
28 |
+ |
InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
29 |
+ |
public void run() { |
30 |
+ |
try { |
31 |
+ |
lock.writeLock().lockInterruptibly(); |
32 |
+ |
} catch(InterruptedException success){} |
33 |
+ |
} |
34 |
+ |
} |
35 |
+ |
|
36 |
|
|
37 |
< |
private static long SHORT_DELAY_MS = 100; |
38 |
< |
private static long MEDIUM_DELAY_MS = 1000; |
39 |
< |
private static long LONG_DELAY_MS = 10000; |
28 |
< |
|
29 |
< |
/* |
30 |
< |
* Unlocks an unlocked lock, throws Illegal Monitor State |
31 |
< |
* |
37 |
> |
/** |
38 |
> |
* A runnable calling lockInterruptibly that expects to be |
39 |
> |
* interrupted |
40 |
|
*/ |
41 |
< |
|
42 |
< |
public void testIllegalMonitorStateException(){ |
41 |
> |
class InterruptedLockRunnable implements Runnable { |
42 |
> |
final ReentrantReadWriteLock lock; |
43 |
> |
InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
44 |
> |
public void run() { |
45 |
> |
try { |
46 |
> |
lock.writeLock().lockInterruptibly(); |
47 |
> |
threadShouldThrow(); |
48 |
> |
} catch(InterruptedException success){} |
49 |
> |
} |
50 |
> |
} |
51 |
> |
|
52 |
> |
/** |
53 |
> |
* Subclass to expose protected methods |
54 |
> |
*/ |
55 |
> |
static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock { |
56 |
> |
PublicReentrantReadWriteLock() { super(); } |
57 |
> |
public Collection<Thread> getQueuedThreads() { |
58 |
> |
return super.getQueuedThreads(); |
59 |
> |
} |
60 |
> |
public Collection<Thread> getWaitingThreads(Condition c) { |
61 |
> |
return super.getWaitingThreads(c); |
62 |
> |
} |
63 |
> |
} |
64 |
> |
|
65 |
> |
/** |
66 |
> |
* Constructor sets given fairness, and is in unlocked state |
67 |
> |
*/ |
68 |
> |
public void testConstructor() { |
69 |
|
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
70 |
< |
try{ |
71 |
< |
rl.writeLock().unlock(); |
72 |
< |
fail("Should of thown Illegal Monitor State Exception"); |
70 |
> |
assertFalse(rl.isFair()); |
71 |
> |
assertFalse(rl.isWriteLocked()); |
72 |
> |
assertEquals(0, rl.getReadLockCount()); |
73 |
> |
ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true); |
74 |
> |
assertTrue(r2.isFair()); |
75 |
> |
assertFalse(r2.isWriteLocked()); |
76 |
> |
assertEquals(0, r2.getReadLockCount()); |
77 |
> |
} |
78 |
> |
|
79 |
> |
/** |
80 |
> |
* write-locking and read-locking an unlocked lock succeed |
81 |
> |
*/ |
82 |
> |
public void testLock() { |
83 |
> |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
84 |
> |
rl.writeLock().lock(); |
85 |
> |
assertTrue(rl.isWriteLocked()); |
86 |
> |
assertTrue(rl.isWriteLockedByCurrentThread()); |
87 |
> |
assertEquals(0, rl.getReadLockCount()); |
88 |
> |
rl.writeLock().unlock(); |
89 |
> |
assertFalse(rl.isWriteLocked()); |
90 |
> |
assertFalse(rl.isWriteLockedByCurrentThread()); |
91 |
> |
assertEquals(0, rl.getReadLockCount()); |
92 |
> |
rl.readLock().lock(); |
93 |
> |
assertFalse(rl.isWriteLocked()); |
94 |
> |
assertFalse(rl.isWriteLockedByCurrentThread()); |
95 |
> |
assertEquals(1, rl.getReadLockCount()); |
96 |
> |
rl.readLock().unlock(); |
97 |
> |
assertFalse(rl.isWriteLocked()); |
98 |
> |
assertFalse(rl.isWriteLockedByCurrentThread()); |
99 |
> |
assertEquals(0, rl.getReadLockCount()); |
100 |
> |
} |
101 |
> |
|
102 |
|
|
103 |
< |
}catch(IllegalMonitorStateException success){} |
103 |
> |
/** |
104 |
> |
* locking an unlocked fair lock succeeds |
105 |
> |
*/ |
106 |
> |
public void testFairLock() { |
107 |
> |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true); |
108 |
> |
rl.writeLock().lock(); |
109 |
> |
assertTrue(rl.isWriteLocked()); |
110 |
> |
assertTrue(rl.isWriteLockedByCurrentThread()); |
111 |
> |
assertEquals(0, rl.getReadLockCount()); |
112 |
> |
rl.writeLock().unlock(); |
113 |
> |
assertFalse(rl.isWriteLocked()); |
114 |
> |
assertFalse(rl.isWriteLockedByCurrentThread()); |
115 |
> |
assertEquals(0, rl.getReadLockCount()); |
116 |
> |
rl.readLock().lock(); |
117 |
> |
assertFalse(rl.isWriteLocked()); |
118 |
> |
assertFalse(rl.isWriteLockedByCurrentThread()); |
119 |
> |
assertEquals(1, rl.getReadLockCount()); |
120 |
> |
rl.readLock().unlock(); |
121 |
> |
assertFalse(rl.isWriteLocked()); |
122 |
> |
assertFalse(rl.isWriteLockedByCurrentThread()); |
123 |
> |
assertEquals(0, rl.getReadLockCount()); |
124 |
> |
} |
125 |
> |
|
126 |
> |
/** |
127 |
> |
* getWriteHoldCount returns number of recursive holds |
128 |
> |
*/ |
129 |
> |
public void testGetHoldCount() { |
130 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
131 |
> |
for(int i = 1; i <= SIZE; i++) { |
132 |
> |
lock.writeLock().lock(); |
133 |
> |
assertEquals(i,lock.getWriteHoldCount()); |
134 |
> |
} |
135 |
> |
for(int i = SIZE; i > 0; i--) { |
136 |
> |
lock.writeLock().unlock(); |
137 |
> |
assertEquals(i-1,lock.getWriteHoldCount()); |
138 |
> |
} |
139 |
|
} |
140 |
+ |
|
141 |
|
|
142 |
+ |
/** |
143 |
+ |
* write-unlocking an unlocked lock throws IllegalMonitorStateException |
144 |
+ |
*/ |
145 |
+ |
public void testUnlock_IllegalMonitorStateException() { |
146 |
+ |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
147 |
+ |
try { |
148 |
+ |
rl.writeLock().unlock(); |
149 |
+ |
shouldThrow(); |
150 |
+ |
} catch(IllegalMonitorStateException success){} |
151 |
+ |
} |
152 |
|
|
153 |
|
|
154 |
< |
public void testInterruptedException(){ |
154 |
> |
/** |
155 |
> |
* write-lockInterruptibly is interruptible |
156 |
> |
*/ |
157 |
> |
public void testWriteLockInterruptibly_Interrupted() { |
158 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
47 |
– |
lock.writeLock().lock(); |
159 |
|
Thread t = new Thread(new Runnable() { |
160 |
< |
public void run(){ |
161 |
< |
try{ |
160 |
> |
public void run() { |
161 |
> |
try { |
162 |
|
lock.writeLock().lockInterruptibly(); |
163 |
< |
fail("should throw"); |
164 |
< |
}catch(InterruptedException success){} |
163 |
> |
lock.writeLock().unlock(); |
164 |
> |
lock.writeLock().lockInterruptibly(); |
165 |
> |
lock.writeLock().unlock(); |
166 |
> |
} catch(InterruptedException success){} |
167 |
|
} |
168 |
|
}); |
169 |
|
try { |
170 |
+ |
lock.writeLock().lock(); |
171 |
|
t.start(); |
172 |
|
t.interrupt(); |
173 |
|
lock.writeLock().unlock(); |
174 |
|
t.join(); |
175 |
|
} catch(Exception e){ |
176 |
< |
fail("unexpected exception"); |
176 |
> |
unexpectedException(); |
177 |
|
} |
178 |
|
} |
179 |
|
|
180 |
< |
public void testInterruptedException2(){ |
180 |
> |
/** |
181 |
> |
* timed write-tryLock is interruptible |
182 |
> |
*/ |
183 |
> |
public void testWriteTryLock_Interrupted() { |
184 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
185 |
|
lock.writeLock().lock(); |
186 |
|
Thread t = new Thread(new Runnable() { |
187 |
< |
public void run(){ |
188 |
< |
try{ |
187 |
> |
public void run() { |
188 |
> |
try { |
189 |
|
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
190 |
< |
fail("should throw"); |
74 |
< |
}catch(InterruptedException success){} |
190 |
> |
} catch(InterruptedException success){} |
191 |
|
} |
192 |
|
}); |
193 |
|
try { |
196 |
|
lock.writeLock().unlock(); |
197 |
|
t.join(); |
198 |
|
} catch(Exception e){ |
199 |
< |
fail("unexpected exception"); |
199 |
> |
unexpectedException(); |
200 |
|
} |
201 |
|
} |
202 |
|
|
203 |
< |
public void testInterruptedException3(){ |
203 |
> |
/** |
204 |
> |
* read-lockInterruptibly is interruptible |
205 |
> |
*/ |
206 |
> |
public void testReadLockInterruptibly_Interrupted() { |
207 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
208 |
|
lock.writeLock().lock(); |
209 |
|
Thread t = new Thread(new Runnable() { |
210 |
< |
public void run(){ |
211 |
< |
try{ |
210 |
> |
public void run() { |
211 |
> |
try { |
212 |
|
lock.readLock().lockInterruptibly(); |
213 |
< |
fail("should throw"); |
95 |
< |
}catch(InterruptedException success){} |
213 |
> |
} catch(InterruptedException success){} |
214 |
|
} |
215 |
|
}); |
216 |
|
try { |
219 |
|
lock.writeLock().unlock(); |
220 |
|
t.join(); |
221 |
|
} catch(Exception e){ |
222 |
< |
fail("unexpected exception"); |
222 |
> |
unexpectedException(); |
223 |
|
} |
224 |
|
} |
225 |
|
|
226 |
< |
public void testInterruptedException4(){ |
226 |
> |
/** |
227 |
> |
* timed read-tryLock is interruptible |
228 |
> |
*/ |
229 |
> |
public void testReadTryLock_Interrupted() { |
230 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
231 |
|
lock.writeLock().lock(); |
232 |
|
Thread t = new Thread(new Runnable() { |
233 |
< |
public void run(){ |
234 |
< |
try{ |
233 |
> |
public void run() { |
234 |
> |
try { |
235 |
|
lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS); |
236 |
< |
fail("should throw"); |
237 |
< |
}catch(InterruptedException success){} |
236 |
> |
threadShouldThrow(); |
237 |
> |
} catch(InterruptedException success){} |
238 |
|
} |
239 |
|
}); |
240 |
|
try { |
242 |
|
t.interrupt(); |
243 |
|
t.join(); |
244 |
|
} catch(Exception e){ |
245 |
< |
fail("unexpected exception"); |
245 |
> |
unexpectedException(); |
246 |
|
} |
247 |
|
} |
248 |
|
|
249 |
|
|
250 |
< |
public void testTryLockWhenLocked() { |
250 |
> |
/** |
251 |
> |
* write-tryLock fails if locked |
252 |
> |
*/ |
253 |
> |
public void testWriteTryLockWhenLocked() { |
254 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
255 |
|
lock.writeLock().lock(); |
256 |
|
Thread t = new Thread(new Runnable() { |
257 |
< |
public void run(){ |
258 |
< |
assertFalse(lock.writeLock().tryLock()); |
257 |
> |
public void run() { |
258 |
> |
threadAssertFalse(lock.writeLock().tryLock()); |
259 |
|
} |
260 |
|
}); |
261 |
|
try { |
263 |
|
t.join(); |
264 |
|
lock.writeLock().unlock(); |
265 |
|
} catch(Exception e){ |
266 |
< |
fail("unexpected exception"); |
266 |
> |
unexpectedException(); |
267 |
|
} |
268 |
|
} |
269 |
|
|
270 |
< |
public void testTryLockWhenLocked2() { |
270 |
> |
/** |
271 |
> |
* read-tryLock fails if locked |
272 |
> |
*/ |
273 |
> |
public void testReadTryLockWhenLocked() { |
274 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
275 |
|
lock.writeLock().lock(); |
276 |
|
Thread t = new Thread(new Runnable() { |
277 |
< |
public void run(){ |
278 |
< |
assertFalse(lock.readLock().tryLock()); |
277 |
> |
public void run() { |
278 |
> |
threadAssertFalse(lock.readLock().tryLock()); |
279 |
|
} |
280 |
|
}); |
281 |
|
try { |
283 |
|
t.join(); |
284 |
|
lock.writeLock().unlock(); |
285 |
|
} catch(Exception e){ |
286 |
< |
fail("unexpected exception"); |
286 |
> |
unexpectedException(); |
287 |
|
} |
288 |
|
} |
289 |
|
|
290 |
+ |
/** |
291 |
+ |
* Multiple threads can hold a read lock when not write-locked |
292 |
+ |
*/ |
293 |
|
public void testMultipleReadLocks() { |
294 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
295 |
|
lock.readLock().lock(); |
296 |
|
Thread t = new Thread(new Runnable() { |
297 |
< |
public void run(){ |
298 |
< |
assertTrue(lock.readLock().tryLock()); |
297 |
> |
public void run() { |
298 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
299 |
|
lock.readLock().unlock(); |
300 |
|
} |
301 |
|
}); |
304 |
|
t.join(); |
305 |
|
lock.readLock().unlock(); |
306 |
|
} catch(Exception e){ |
307 |
< |
fail("unexpected exception"); |
307 |
> |
unexpectedException(); |
308 |
|
} |
309 |
|
} |
310 |
|
|
311 |
+ |
/** |
312 |
+ |
* A writelock succeeds after reading threads unlock |
313 |
+ |
*/ |
314 |
|
public void testWriteAfterMultipleReadLocks() { |
315 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
316 |
|
lock.readLock().lock(); |
317 |
|
Thread t1 = new Thread(new Runnable() { |
318 |
< |
public void run(){ |
318 |
> |
public void run() { |
319 |
|
lock.readLock().lock(); |
320 |
|
lock.readLock().unlock(); |
321 |
|
} |
322 |
|
}); |
323 |
|
Thread t2 = new Thread(new Runnable() { |
324 |
< |
public void run(){ |
324 |
> |
public void run() { |
325 |
|
lock.writeLock().lock(); |
326 |
|
lock.writeLock().unlock(); |
327 |
|
} |
338 |
|
assertTrue(!t2.isAlive()); |
339 |
|
|
340 |
|
} catch(Exception e){ |
341 |
< |
fail("unexpected exception"); |
341 |
> |
unexpectedException(); |
342 |
|
} |
343 |
|
} |
344 |
|
|
345 |
+ |
/** |
346 |
+ |
* Readlocks succeed after a writing thread unlocks |
347 |
+ |
*/ |
348 |
|
public void testReadAfterWriteLock() { |
349 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
350 |
|
lock.writeLock().lock(); |
351 |
|
Thread t1 = new Thread(new Runnable() { |
352 |
< |
public void run(){ |
352 |
> |
public void run() { |
353 |
> |
lock.readLock().lock(); |
354 |
> |
lock.readLock().unlock(); |
355 |
> |
} |
356 |
> |
}); |
357 |
> |
Thread t2 = new Thread(new Runnable() { |
358 |
> |
public void run() { |
359 |
> |
lock.readLock().lock(); |
360 |
> |
lock.readLock().unlock(); |
361 |
> |
} |
362 |
> |
}); |
363 |
> |
|
364 |
> |
try { |
365 |
> |
t1.start(); |
366 |
> |
t2.start(); |
367 |
> |
Thread.sleep(SHORT_DELAY_MS); |
368 |
> |
lock.writeLock().unlock(); |
369 |
> |
t1.join(MEDIUM_DELAY_MS); |
370 |
> |
t2.join(MEDIUM_DELAY_MS); |
371 |
> |
assertTrue(!t1.isAlive()); |
372 |
> |
assertTrue(!t2.isAlive()); |
373 |
> |
|
374 |
> |
} catch(Exception e){ |
375 |
> |
unexpectedException(); |
376 |
> |
} |
377 |
> |
} |
378 |
> |
|
379 |
> |
/** |
380 |
> |
* Read trylock succeeds if write locked by current thread |
381 |
> |
*/ |
382 |
> |
public void testReadHoldingWriteLock() { |
383 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
384 |
> |
lock.writeLock().lock(); |
385 |
> |
assertTrue(lock.readLock().tryLock()); |
386 |
> |
lock.readLock().unlock(); |
387 |
> |
lock.writeLock().unlock(); |
388 |
> |
} |
389 |
> |
|
390 |
> |
/** |
391 |
> |
* Read lock succeeds if write locked by current thread even if |
392 |
> |
* other threads are waiting |
393 |
> |
*/ |
394 |
> |
public void testReadHoldingWriteLock2() { |
395 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
396 |
> |
lock.writeLock().lock(); |
397 |
> |
Thread t1 = new Thread(new Runnable() { |
398 |
> |
public void run() { |
399 |
|
lock.readLock().lock(); |
400 |
|
lock.readLock().unlock(); |
401 |
|
} |
402 |
|
}); |
403 |
|
Thread t2 = new Thread(new Runnable() { |
404 |
< |
public void run(){ |
404 |
> |
public void run() { |
405 |
|
lock.readLock().lock(); |
406 |
|
lock.readLock().unlock(); |
407 |
|
} |
410 |
|
try { |
411 |
|
t1.start(); |
412 |
|
t2.start(); |
413 |
+ |
lock.readLock().lock(); |
414 |
+ |
lock.readLock().unlock(); |
415 |
|
Thread.sleep(SHORT_DELAY_MS); |
416 |
+ |
lock.readLock().lock(); |
417 |
+ |
lock.readLock().unlock(); |
418 |
|
lock.writeLock().unlock(); |
419 |
|
t1.join(MEDIUM_DELAY_MS); |
420 |
|
t2.join(MEDIUM_DELAY_MS); |
422 |
|
assertTrue(!t2.isAlive()); |
423 |
|
|
424 |
|
} catch(Exception e){ |
425 |
< |
fail("unexpected exception"); |
425 |
> |
unexpectedException(); |
426 |
|
} |
427 |
|
} |
428 |
|
|
429 |
+ |
/** |
430 |
+ |
* Fair Read trylock succeeds if write locked by current thread |
431 |
+ |
*/ |
432 |
+ |
public void testReadHoldingWriteLockFair() { |
433 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
434 |
+ |
lock.writeLock().lock(); |
435 |
+ |
assertTrue(lock.readLock().tryLock()); |
436 |
+ |
lock.readLock().unlock(); |
437 |
+ |
lock.writeLock().unlock(); |
438 |
+ |
} |
439 |
|
|
440 |
+ |
/** |
441 |
+ |
* Fair Read lock succeeds if write locked by current thread even if |
442 |
+ |
* other threads are waiting |
443 |
+ |
*/ |
444 |
+ |
public void testReadHoldingWriteLockFair2() { |
445 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
446 |
+ |
lock.writeLock().lock(); |
447 |
+ |
Thread t1 = new Thread(new Runnable() { |
448 |
+ |
public void run() { |
449 |
+ |
lock.readLock().lock(); |
450 |
+ |
lock.readLock().unlock(); |
451 |
+ |
} |
452 |
+ |
}); |
453 |
+ |
Thread t2 = new Thread(new Runnable() { |
454 |
+ |
public void run() { |
455 |
+ |
lock.readLock().lock(); |
456 |
+ |
lock.readLock().unlock(); |
457 |
+ |
} |
458 |
+ |
}); |
459 |
+ |
|
460 |
+ |
try { |
461 |
+ |
t1.start(); |
462 |
+ |
t2.start(); |
463 |
+ |
lock.readLock().lock(); |
464 |
+ |
lock.readLock().unlock(); |
465 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
466 |
+ |
lock.readLock().lock(); |
467 |
+ |
lock.readLock().unlock(); |
468 |
+ |
lock.writeLock().unlock(); |
469 |
+ |
t1.join(MEDIUM_DELAY_MS); |
470 |
+ |
t2.join(MEDIUM_DELAY_MS); |
471 |
+ |
assertTrue(!t1.isAlive()); |
472 |
+ |
assertTrue(!t2.isAlive()); |
473 |
+ |
|
474 |
+ |
} catch(Exception e){ |
475 |
+ |
unexpectedException(); |
476 |
+ |
} |
477 |
+ |
} |
478 |
+ |
|
479 |
+ |
|
480 |
+ |
/** |
481 |
+ |
* Read tryLock succeeds if readlocked but not writelocked |
482 |
+ |
*/ |
483 |
|
public void testTryLockWhenReadLocked() { |
484 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
485 |
|
lock.readLock().lock(); |
486 |
|
Thread t = new Thread(new Runnable() { |
487 |
< |
public void run(){ |
488 |
< |
assertTrue(lock.readLock().tryLock()); |
487 |
> |
public void run() { |
488 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
489 |
|
lock.readLock().unlock(); |
490 |
|
} |
491 |
|
}); |
494 |
|
t.join(); |
495 |
|
lock.readLock().unlock(); |
496 |
|
} catch(Exception e){ |
497 |
< |
fail("unexpected exception"); |
497 |
> |
unexpectedException(); |
498 |
|
} |
499 |
|
} |
500 |
|
|
501 |
|
|
502 |
|
|
503 |
+ |
/** |
504 |
+ |
* write tryLock fails when readlocked |
505 |
+ |
*/ |
506 |
|
public void testWriteTryLockWhenReadLocked() { |
507 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
508 |
|
lock.readLock().lock(); |
509 |
|
Thread t = new Thread(new Runnable() { |
510 |
< |
public void run(){ |
511 |
< |
assertFalse(lock.writeLock().tryLock()); |
510 |
> |
public void run() { |
511 |
> |
threadAssertFalse(lock.writeLock().tryLock()); |
512 |
|
} |
513 |
|
}); |
514 |
|
try { |
516 |
|
t.join(); |
517 |
|
lock.readLock().unlock(); |
518 |
|
} catch(Exception e){ |
519 |
< |
fail("unexpected exception"); |
519 |
> |
unexpectedException(); |
520 |
|
} |
521 |
|
} |
522 |
|
|
523 |
|
|
524 |
|
|
525 |
< |
public void testTryLock_Timeout(){ |
525 |
> |
/** |
526 |
> |
* write timed tryLock times out if locked |
527 |
> |
*/ |
528 |
> |
public void testWriteTryLock_Timeout() { |
529 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
530 |
|
lock.writeLock().lock(); |
531 |
|
Thread t = new Thread(new Runnable() { |
532 |
< |
public void run(){ |
532 |
> |
public void run() { |
533 |
|
try { |
534 |
< |
assertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS)); |
534 |
> |
threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS)); |
535 |
|
} catch (Exception ex) { |
536 |
< |
fail("unexpected exception"); |
536 |
> |
threadUnexpectedException(); |
537 |
|
} |
538 |
|
} |
539 |
|
}); |
542 |
|
t.join(); |
543 |
|
lock.writeLock().unlock(); |
544 |
|
} catch(Exception e){ |
545 |
< |
fail("unexpected exception"); |
545 |
> |
unexpectedException(); |
546 |
|
} |
547 |
|
} |
548 |
|
|
549 |
< |
public void testTryLock_Timeout2(){ |
549 |
> |
/** |
550 |
> |
* read timed tryLock times out if write-locked |
551 |
> |
*/ |
552 |
> |
public void testReadTryLock_Timeout() { |
553 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
554 |
|
lock.writeLock().lock(); |
555 |
|
Thread t = new Thread(new Runnable() { |
556 |
< |
public void run(){ |
556 |
> |
public void run() { |
557 |
|
try { |
558 |
< |
assertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS)); |
558 |
> |
threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS)); |
559 |
|
} catch (Exception ex) { |
560 |
< |
fail("unexpected exception"); |
560 |
> |
threadUnexpectedException(); |
561 |
|
} |
562 |
|
} |
563 |
|
}); |
566 |
|
t.join(); |
567 |
|
lock.writeLock().unlock(); |
568 |
|
} catch(Exception e){ |
569 |
< |
fail("unexpected exception"); |
569 |
> |
unexpectedException(); |
570 |
|
} |
571 |
|
} |
572 |
|
|
573 |
|
|
574 |
< |
public void testLockInterruptibly() { |
574 |
> |
/** |
575 |
> |
* write lockInterruptibly succeeds if lock free else is interruptible |
576 |
> |
*/ |
577 |
> |
public void testWriteLockInterruptibly() { |
578 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
579 |
|
try { |
580 |
|
lock.writeLock().lockInterruptibly(); |
581 |
|
} catch(Exception e) { |
582 |
< |
fail("unexpected exception"); |
582 |
> |
unexpectedException(); |
583 |
|
} |
584 |
|
Thread t = new Thread(new Runnable() { |
585 |
|
public void run() { |
586 |
|
try { |
587 |
|
lock.writeLock().lockInterruptibly(); |
588 |
< |
fail("should throw"); |
588 |
> |
threadShouldThrow(); |
589 |
|
} |
590 |
|
catch(InterruptedException success) { |
591 |
|
} |
597 |
|
t.join(); |
598 |
|
lock.writeLock().unlock(); |
599 |
|
} catch(Exception e){ |
600 |
< |
fail("unexpected exception"); |
600 |
> |
unexpectedException(); |
601 |
|
} |
602 |
|
} |
603 |
|
|
604 |
< |
public void testLockInterruptibly2() { |
604 |
> |
/** |
605 |
> |
* read lockInterruptibly succeeds if lock free else is interruptible |
606 |
> |
*/ |
607 |
> |
public void testReadLockInterruptibly() { |
608 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
609 |
|
try { |
610 |
|
lock.writeLock().lockInterruptibly(); |
611 |
|
} catch(Exception e) { |
612 |
< |
fail("unexpected exception"); |
612 |
> |
unexpectedException(); |
613 |
|
} |
614 |
|
Thread t = new Thread(new Runnable() { |
615 |
|
public void run() { |
616 |
|
try { |
617 |
|
lock.readLock().lockInterruptibly(); |
618 |
< |
fail("should throw"); |
618 |
> |
threadShouldThrow(); |
619 |
|
} |
620 |
|
catch(InterruptedException success) { |
621 |
|
} |
627 |
|
t.join(); |
628 |
|
lock.writeLock().unlock(); |
629 |
|
} catch(Exception e){ |
630 |
< |
fail("unexpected exception"); |
630 |
> |
unexpectedException(); |
631 |
|
} |
632 |
|
} |
633 |
|
|
634 |
+ |
/** |
635 |
+ |
* Calling await without holding lock throws IllegalMonitorStateException |
636 |
+ |
*/ |
637 |
|
public void testAwait_IllegalMonitor() { |
638 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
639 |
|
final Condition c = lock.writeLock().newCondition(); |
640 |
|
try { |
641 |
|
c.await(); |
642 |
< |
fail("should throw"); |
642 |
> |
shouldThrow(); |
643 |
|
} |
644 |
|
catch (IllegalMonitorStateException success) { |
645 |
|
} |
646 |
|
catch (Exception ex) { |
647 |
< |
fail("should throw IMSE"); |
647 |
> |
shouldThrow(); |
648 |
|
} |
649 |
|
} |
650 |
|
|
651 |
+ |
/** |
652 |
+ |
* Calling signal without holding lock throws IllegalMonitorStateException |
653 |
+ |
*/ |
654 |
|
public void testSignal_IllegalMonitor() { |
655 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
656 |
|
final Condition c = lock.writeLock().newCondition(); |
657 |
|
try { |
658 |
|
c.signal(); |
659 |
< |
fail("should throw"); |
659 |
> |
shouldThrow(); |
660 |
|
} |
661 |
|
catch (IllegalMonitorStateException success) { |
662 |
|
} |
663 |
|
catch (Exception ex) { |
664 |
< |
fail("should throw IMSE"); |
664 |
> |
unexpectedException(); |
665 |
|
} |
666 |
|
} |
667 |
|
|
668 |
+ |
/** |
669 |
+ |
* awaitNanos without a signal times out |
670 |
+ |
*/ |
671 |
|
public void testAwaitNanos_Timeout() { |
672 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
673 |
|
final Condition c = lock.writeLock().newCondition(); |
678 |
|
lock.writeLock().unlock(); |
679 |
|
} |
680 |
|
catch (Exception ex) { |
681 |
< |
fail("unexpected exception"); |
681 |
> |
unexpectedException(); |
682 |
|
} |
683 |
|
} |
684 |
|
|
685 |
+ |
|
686 |
+ |
/** |
687 |
+ |
* timed await without a signal times out |
688 |
+ |
*/ |
689 |
|
public void testAwait_Timeout() { |
690 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
691 |
|
final Condition c = lock.writeLock().newCondition(); |
695 |
|
lock.writeLock().unlock(); |
696 |
|
} |
697 |
|
catch (Exception ex) { |
698 |
< |
fail("unexpected exception"); |
698 |
> |
unexpectedException(); |
699 |
|
} |
700 |
|
} |
701 |
|
|
702 |
+ |
/** |
703 |
+ |
* awaitUntil without a signal times out |
704 |
+ |
*/ |
705 |
|
public void testAwaitUntil_Timeout() { |
706 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
707 |
|
final Condition c = lock.writeLock().newCondition(); |
712 |
|
lock.writeLock().unlock(); |
713 |
|
} |
714 |
|
catch (Exception ex) { |
715 |
< |
fail("unexpected exception"); |
715 |
> |
unexpectedException(); |
716 |
|
} |
717 |
|
} |
718 |
|
|
719 |
+ |
/** |
720 |
+ |
* await returns when signalled |
721 |
+ |
*/ |
722 |
|
public void testAwait() { |
723 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
724 |
|
final Condition c = lock.writeLock().newCondition(); |
730 |
|
lock.writeLock().unlock(); |
731 |
|
} |
732 |
|
catch(InterruptedException e) { |
733 |
< |
fail("unexpected exception"); |
733 |
> |
threadUnexpectedException(); |
734 |
|
} |
735 |
|
} |
736 |
|
}); |
745 |
|
assertFalse(t.isAlive()); |
746 |
|
} |
747 |
|
catch (Exception ex) { |
748 |
< |
fail("unexpected exception"); |
748 |
> |
unexpectedException(); |
749 |
|
} |
750 |
|
} |
751 |
|
|
752 |
+ |
/** |
753 |
+ |
* awaitUninterruptibly doesn't abort on interrupt |
754 |
+ |
*/ |
755 |
|
public void testAwaitUninterruptibly() { |
756 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
757 |
|
final Condition c = lock.writeLock().newCondition(); |
770 |
|
lock.writeLock().lock(); |
771 |
|
c.signal(); |
772 |
|
lock.writeLock().unlock(); |
773 |
+ |
assert(t.isInterrupted()); |
774 |
|
t.join(SHORT_DELAY_MS); |
775 |
|
assertFalse(t.isAlive()); |
776 |
|
} |
777 |
|
catch (Exception ex) { |
778 |
< |
fail("unexpected exception"); |
778 |
> |
unexpectedException(); |
779 |
|
} |
780 |
|
} |
781 |
|
|
782 |
+ |
/** |
783 |
+ |
* await is interruptible |
784 |
+ |
*/ |
785 |
|
public void testAwait_Interrupt() { |
786 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
787 |
|
final Condition c = lock.writeLock().newCondition(); |
791 |
|
lock.writeLock().lock(); |
792 |
|
c.await(); |
793 |
|
lock.writeLock().unlock(); |
794 |
< |
fail("should throw"); |
794 |
> |
threadShouldThrow(); |
795 |
|
} |
796 |
|
catch(InterruptedException success) { |
797 |
|
} |
806 |
|
assertFalse(t.isAlive()); |
807 |
|
} |
808 |
|
catch (Exception ex) { |
809 |
< |
fail("unexpected exception"); |
809 |
> |
unexpectedException(); |
810 |
|
} |
811 |
|
} |
812 |
|
|
813 |
+ |
/** |
814 |
+ |
* awaitNanos is interruptible |
815 |
+ |
*/ |
816 |
|
public void testAwaitNanos_Interrupt() { |
817 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
818 |
|
final Condition c = lock.writeLock().newCondition(); |
822 |
|
lock.writeLock().lock(); |
823 |
|
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
824 |
|
lock.writeLock().unlock(); |
825 |
< |
fail("should throw"); |
825 |
> |
threadShouldThrow(); |
826 |
|
} |
827 |
|
catch(InterruptedException success) { |
828 |
|
} |
837 |
|
assertFalse(t.isAlive()); |
838 |
|
} |
839 |
|
catch (Exception ex) { |
840 |
< |
fail("unexpected exception"); |
840 |
> |
unexpectedException(); |
841 |
|
} |
842 |
|
} |
843 |
|
|
844 |
+ |
/** |
845 |
+ |
* awaitUntil is interruptible |
846 |
+ |
*/ |
847 |
|
public void testAwaitUntil_Interrupt() { |
848 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
849 |
|
final Condition c = lock.writeLock().newCondition(); |
854 |
|
java.util.Date d = new java.util.Date(); |
855 |
|
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
856 |
|
lock.writeLock().unlock(); |
857 |
< |
fail("should throw"); |
857 |
> |
threadShouldThrow(); |
858 |
|
} |
859 |
|
catch(InterruptedException success) { |
860 |
|
} |
869 |
|
assertFalse(t.isAlive()); |
870 |
|
} |
871 |
|
catch (Exception ex) { |
872 |
< |
fail("unexpected exception"); |
872 |
> |
unexpectedException(); |
873 |
|
} |
874 |
|
} |
875 |
|
|
876 |
+ |
/** |
877 |
+ |
* signalAll wakes up all threads |
878 |
+ |
*/ |
879 |
|
public void testSignalAll() { |
880 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
881 |
|
final Condition c = lock.writeLock().newCondition(); |
887 |
|
lock.writeLock().unlock(); |
888 |
|
} |
889 |
|
catch(InterruptedException e) { |
890 |
< |
fail("unexpected exception"); |
890 |
> |
threadUnexpectedException(); |
891 |
|
} |
892 |
|
} |
893 |
|
}); |
900 |
|
lock.writeLock().unlock(); |
901 |
|
} |
902 |
|
catch(InterruptedException e) { |
903 |
< |
fail("unexpected exception"); |
903 |
> |
threadUnexpectedException(); |
904 |
|
} |
905 |
|
} |
906 |
|
}); |
918 |
|
assertFalse(t2.isAlive()); |
919 |
|
} |
920 |
|
catch (Exception ex) { |
921 |
< |
fail("unexpected exception"); |
921 |
> |
unexpectedException(); |
922 |
|
} |
923 |
|
} |
924 |
|
|
925 |
+ |
/** |
926 |
+ |
* A serialized lock deserializes as unlocked |
927 |
+ |
*/ |
928 |
|
public void testSerialization() { |
929 |
|
ReentrantReadWriteLock l = new ReentrantReadWriteLock(); |
930 |
|
l.readLock().lock(); |
943 |
|
r.readLock().unlock(); |
944 |
|
} catch(Exception e){ |
945 |
|
e.printStackTrace(); |
946 |
< |
fail("unexpected exception"); |
946 |
> |
unexpectedException(); |
947 |
> |
} |
948 |
> |
} |
949 |
> |
|
950 |
> |
/** |
951 |
> |
* hasQueuedThreads reports whether there are waiting threads |
952 |
> |
*/ |
953 |
> |
public void testhasQueuedThreads() { |
954 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
955 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
956 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
957 |
> |
try { |
958 |
> |
assertFalse(lock.hasQueuedThreads()); |
959 |
> |
lock.writeLock().lock(); |
960 |
> |
t1.start(); |
961 |
> |
Thread.sleep(SHORT_DELAY_MS); |
962 |
> |
assertTrue(lock.hasQueuedThreads()); |
963 |
> |
t2.start(); |
964 |
> |
Thread.sleep(SHORT_DELAY_MS); |
965 |
> |
assertTrue(lock.hasQueuedThreads()); |
966 |
> |
t1.interrupt(); |
967 |
> |
Thread.sleep(SHORT_DELAY_MS); |
968 |
> |
assertTrue(lock.hasQueuedThreads()); |
969 |
> |
lock.writeLock().unlock(); |
970 |
> |
Thread.sleep(SHORT_DELAY_MS); |
971 |
> |
assertFalse(lock.hasQueuedThreads()); |
972 |
> |
t1.join(); |
973 |
> |
t2.join(); |
974 |
> |
} catch(Exception e){ |
975 |
> |
unexpectedException(); |
976 |
> |
} |
977 |
> |
} |
978 |
> |
|
979 |
> |
/** |
980 |
> |
* hasQueuedThread(null) throws NPE |
981 |
> |
*/ |
982 |
> |
public void testHasQueuedThreadNPE() { |
983 |
> |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
984 |
> |
try { |
985 |
> |
sync.hasQueuedThread(null); |
986 |
> |
shouldThrow(); |
987 |
> |
} catch (NullPointerException success) { |
988 |
> |
} |
989 |
> |
} |
990 |
> |
|
991 |
> |
/** |
992 |
> |
* hasQueuedThread reports whether a thread is queued. |
993 |
> |
*/ |
994 |
> |
public void testHasQueuedThread() { |
995 |
> |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
996 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
997 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
998 |
> |
try { |
999 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1000 |
> |
assertFalse(sync.hasQueuedThread(t2)); |
1001 |
> |
sync.writeLock().lock(); |
1002 |
> |
t1.start(); |
1003 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1004 |
> |
assertTrue(sync.hasQueuedThread(t1)); |
1005 |
> |
t2.start(); |
1006 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1007 |
> |
assertTrue(sync.hasQueuedThread(t1)); |
1008 |
> |
assertTrue(sync.hasQueuedThread(t2)); |
1009 |
> |
t1.interrupt(); |
1010 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1011 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1012 |
> |
assertTrue(sync.hasQueuedThread(t2)); |
1013 |
> |
sync.writeLock().unlock(); |
1014 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1015 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1016 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1017 |
> |
assertFalse(sync.hasQueuedThread(t2)); |
1018 |
> |
t1.join(); |
1019 |
> |
t2.join(); |
1020 |
> |
} catch(Exception e){ |
1021 |
> |
unexpectedException(); |
1022 |
> |
} |
1023 |
> |
} |
1024 |
> |
|
1025 |
> |
|
1026 |
> |
/** |
1027 |
> |
* getQueueLength reports number of waiting threads |
1028 |
> |
*/ |
1029 |
> |
public void testGetQueueLength() { |
1030 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1031 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1032 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1033 |
> |
try { |
1034 |
> |
assertEquals(0, lock.getQueueLength()); |
1035 |
> |
lock.writeLock().lock(); |
1036 |
> |
t1.start(); |
1037 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1038 |
> |
assertEquals(1, lock.getQueueLength()); |
1039 |
> |
t2.start(); |
1040 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1041 |
> |
assertEquals(2, lock.getQueueLength()); |
1042 |
> |
t1.interrupt(); |
1043 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1044 |
> |
assertEquals(1, lock.getQueueLength()); |
1045 |
> |
lock.writeLock().unlock(); |
1046 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1047 |
> |
assertEquals(0, lock.getQueueLength()); |
1048 |
> |
t1.join(); |
1049 |
> |
t2.join(); |
1050 |
> |
} catch(Exception e){ |
1051 |
> |
unexpectedException(); |
1052 |
> |
} |
1053 |
> |
} |
1054 |
> |
|
1055 |
> |
/** |
1056 |
> |
* getQueuedThreads includes waiting threads |
1057 |
> |
*/ |
1058 |
> |
public void testGetQueuedThreads() { |
1059 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1060 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1061 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1062 |
> |
try { |
1063 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1064 |
> |
lock.writeLock().lock(); |
1065 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1066 |
> |
t1.start(); |
1067 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1068 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1069 |
> |
t2.start(); |
1070 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1071 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1072 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1073 |
> |
t1.interrupt(); |
1074 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1075 |
> |
assertFalse(lock.getQueuedThreads().contains(t1)); |
1076 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1077 |
> |
lock.writeLock().unlock(); |
1078 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1079 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1080 |
> |
t1.join(); |
1081 |
> |
t2.join(); |
1082 |
> |
} catch(Exception e){ |
1083 |
> |
unexpectedException(); |
1084 |
> |
} |
1085 |
> |
} |
1086 |
> |
|
1087 |
> |
/** |
1088 |
> |
* hasWaiters throws NPE if null |
1089 |
> |
*/ |
1090 |
> |
public void testHasWaitersNPE() { |
1091 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1092 |
> |
try { |
1093 |
> |
lock.hasWaiters(null); |
1094 |
> |
shouldThrow(); |
1095 |
> |
} catch (NullPointerException success) { |
1096 |
> |
} catch (Exception ex) { |
1097 |
> |
unexpectedException(); |
1098 |
> |
} |
1099 |
> |
} |
1100 |
> |
|
1101 |
> |
/** |
1102 |
> |
* getWaitQueueLength throws NPE if null |
1103 |
> |
*/ |
1104 |
> |
public void testGetWaitQueueLengthNPE() { |
1105 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1106 |
> |
try { |
1107 |
> |
lock.getWaitQueueLength(null); |
1108 |
> |
shouldThrow(); |
1109 |
> |
} catch (NullPointerException success) { |
1110 |
> |
} catch (Exception ex) { |
1111 |
> |
unexpectedException(); |
1112 |
> |
} |
1113 |
> |
} |
1114 |
> |
|
1115 |
> |
|
1116 |
> |
/** |
1117 |
> |
* getWaitingThreads throws NPE if null |
1118 |
> |
*/ |
1119 |
> |
public void testGetWaitingThreadsNPE() { |
1120 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1121 |
> |
try { |
1122 |
> |
lock.getWaitingThreads(null); |
1123 |
> |
shouldThrow(); |
1124 |
> |
} catch (NullPointerException success) { |
1125 |
> |
} catch (Exception ex) { |
1126 |
> |
unexpectedException(); |
1127 |
> |
} |
1128 |
> |
} |
1129 |
> |
|
1130 |
> |
/** |
1131 |
> |
* hasWaiters throws IAE if not owned |
1132 |
> |
*/ |
1133 |
> |
public void testHasWaitersIAE() { |
1134 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1135 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1136 |
> |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1137 |
> |
try { |
1138 |
> |
lock2.hasWaiters(c); |
1139 |
> |
shouldThrow(); |
1140 |
> |
} catch (IllegalArgumentException success) { |
1141 |
> |
} catch (Exception ex) { |
1142 |
> |
unexpectedException(); |
1143 |
> |
} |
1144 |
> |
} |
1145 |
> |
|
1146 |
> |
/** |
1147 |
> |
* hasWaiters throws IMSE if not locked |
1148 |
> |
*/ |
1149 |
> |
public void testHasWaitersIMSE() { |
1150 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1151 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1152 |
> |
try { |
1153 |
> |
lock.hasWaiters(c); |
1154 |
> |
shouldThrow(); |
1155 |
> |
} catch (IllegalMonitorStateException success) { |
1156 |
> |
} catch (Exception ex) { |
1157 |
> |
unexpectedException(); |
1158 |
> |
} |
1159 |
> |
} |
1160 |
> |
|
1161 |
> |
|
1162 |
> |
/** |
1163 |
> |
* getWaitQueueLength throws IAE if not owned |
1164 |
> |
*/ |
1165 |
> |
public void testGetWaitQueueLengthIAE() { |
1166 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1167 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1168 |
> |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1169 |
> |
try { |
1170 |
> |
lock2.getWaitQueueLength(c); |
1171 |
> |
shouldThrow(); |
1172 |
> |
} catch (IllegalArgumentException success) { |
1173 |
> |
} catch (Exception ex) { |
1174 |
> |
unexpectedException(); |
1175 |
> |
} |
1176 |
> |
} |
1177 |
> |
|
1178 |
> |
/** |
1179 |
> |
* getWaitQueueLength throws IMSE if not locked |
1180 |
> |
*/ |
1181 |
> |
public void testGetWaitQueueLengthIMSE() { |
1182 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1183 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1184 |
> |
try { |
1185 |
> |
lock.getWaitQueueLength(c); |
1186 |
> |
shouldThrow(); |
1187 |
> |
} catch (IllegalMonitorStateException success) { |
1188 |
> |
} catch (Exception ex) { |
1189 |
> |
unexpectedException(); |
1190 |
|
} |
1191 |
|
} |
1192 |
|
|
1193 |
|
|
1194 |
+ |
/** |
1195 |
+ |
* getWaitingThreads throws IAE if not owned |
1196 |
+ |
*/ |
1197 |
+ |
public void testGetWaitingThreadsIAE() { |
1198 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1199 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1200 |
+ |
final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock(); |
1201 |
+ |
try { |
1202 |
+ |
lock2.getWaitingThreads(c); |
1203 |
+ |
shouldThrow(); |
1204 |
+ |
} catch (IllegalArgumentException success) { |
1205 |
+ |
} catch (Exception ex) { |
1206 |
+ |
unexpectedException(); |
1207 |
+ |
} |
1208 |
+ |
} |
1209 |
+ |
|
1210 |
+ |
/** |
1211 |
+ |
* getWaitingThreads throws IMSE if not locked |
1212 |
+ |
*/ |
1213 |
+ |
public void testGetWaitingThreadsIMSE() { |
1214 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1215 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1216 |
+ |
try { |
1217 |
+ |
lock.getWaitingThreads(c); |
1218 |
+ |
shouldThrow(); |
1219 |
+ |
} catch (IllegalMonitorStateException success) { |
1220 |
+ |
} catch (Exception ex) { |
1221 |
+ |
unexpectedException(); |
1222 |
+ |
} |
1223 |
+ |
} |
1224 |
+ |
|
1225 |
+ |
|
1226 |
+ |
/** |
1227 |
+ |
* hasWaiters returns true when a thread is waiting, else false |
1228 |
+ |
*/ |
1229 |
+ |
public void testHasWaiters() { |
1230 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1231 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1232 |
+ |
Thread t = new Thread(new Runnable() { |
1233 |
+ |
public void run() { |
1234 |
+ |
try { |
1235 |
+ |
lock.writeLock().lock(); |
1236 |
+ |
threadAssertFalse(lock.hasWaiters(c)); |
1237 |
+ |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
1238 |
+ |
c.await(); |
1239 |
+ |
lock.writeLock().unlock(); |
1240 |
+ |
} |
1241 |
+ |
catch(InterruptedException e) { |
1242 |
+ |
threadUnexpectedException(); |
1243 |
+ |
} |
1244 |
+ |
} |
1245 |
+ |
}); |
1246 |
+ |
|
1247 |
+ |
try { |
1248 |
+ |
t.start(); |
1249 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1250 |
+ |
lock.writeLock().lock(); |
1251 |
+ |
assertTrue(lock.hasWaiters(c)); |
1252 |
+ |
assertEquals(1, lock.getWaitQueueLength(c)); |
1253 |
+ |
c.signal(); |
1254 |
+ |
lock.writeLock().unlock(); |
1255 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1256 |
+ |
lock.writeLock().lock(); |
1257 |
+ |
assertFalse(lock.hasWaiters(c)); |
1258 |
+ |
assertEquals(0, lock.getWaitQueueLength(c)); |
1259 |
+ |
lock.writeLock().unlock(); |
1260 |
+ |
t.join(SHORT_DELAY_MS); |
1261 |
+ |
assertFalse(t.isAlive()); |
1262 |
+ |
} |
1263 |
+ |
catch (Exception ex) { |
1264 |
+ |
unexpectedException(); |
1265 |
+ |
} |
1266 |
+ |
} |
1267 |
+ |
|
1268 |
+ |
/** |
1269 |
+ |
* getWaitQueueLength returns number of waiting threads |
1270 |
+ |
*/ |
1271 |
+ |
public void testGetWaitQueueLength() { |
1272 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1273 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1274 |
+ |
Thread t = new Thread(new Runnable() { |
1275 |
+ |
public void run() { |
1276 |
+ |
try { |
1277 |
+ |
lock.writeLock().lock(); |
1278 |
+ |
threadAssertFalse(lock.hasWaiters(c)); |
1279 |
+ |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
1280 |
+ |
c.await(); |
1281 |
+ |
lock.writeLock().unlock(); |
1282 |
+ |
} |
1283 |
+ |
catch(InterruptedException e) { |
1284 |
+ |
threadUnexpectedException(); |
1285 |
+ |
} |
1286 |
+ |
} |
1287 |
+ |
}); |
1288 |
+ |
|
1289 |
+ |
try { |
1290 |
+ |
t.start(); |
1291 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1292 |
+ |
lock.writeLock().lock(); |
1293 |
+ |
assertTrue(lock.hasWaiters(c)); |
1294 |
+ |
assertEquals(1, lock.getWaitQueueLength(c)); |
1295 |
+ |
c.signal(); |
1296 |
+ |
lock.writeLock().unlock(); |
1297 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1298 |
+ |
lock.writeLock().lock(); |
1299 |
+ |
assertFalse(lock.hasWaiters(c)); |
1300 |
+ |
assertEquals(0, lock.getWaitQueueLength(c)); |
1301 |
+ |
lock.writeLock().unlock(); |
1302 |
+ |
t.join(SHORT_DELAY_MS); |
1303 |
+ |
assertFalse(t.isAlive()); |
1304 |
+ |
} |
1305 |
+ |
catch (Exception ex) { |
1306 |
+ |
unexpectedException(); |
1307 |
+ |
} |
1308 |
+ |
} |
1309 |
+ |
|
1310 |
+ |
|
1311 |
+ |
/** |
1312 |
+ |
* getWaitingThreads returns only and all waiting threads |
1313 |
+ |
*/ |
1314 |
+ |
public void testGetWaitingThreads() { |
1315 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1316 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1317 |
+ |
Thread t1 = new Thread(new Runnable() { |
1318 |
+ |
public void run() { |
1319 |
+ |
try { |
1320 |
+ |
lock.writeLock().lock(); |
1321 |
+ |
threadAssertTrue(lock.getWaitingThreads(c).isEmpty()); |
1322 |
+ |
c.await(); |
1323 |
+ |
lock.writeLock().unlock(); |
1324 |
+ |
} |
1325 |
+ |
catch(InterruptedException e) { |
1326 |
+ |
threadUnexpectedException(); |
1327 |
+ |
} |
1328 |
+ |
} |
1329 |
+ |
}); |
1330 |
+ |
|
1331 |
+ |
Thread t2 = new Thread(new Runnable() { |
1332 |
+ |
public void run() { |
1333 |
+ |
try { |
1334 |
+ |
lock.writeLock().lock(); |
1335 |
+ |
threadAssertFalse(lock.getWaitingThreads(c).isEmpty()); |
1336 |
+ |
c.await(); |
1337 |
+ |
lock.writeLock().unlock(); |
1338 |
+ |
} |
1339 |
+ |
catch(InterruptedException e) { |
1340 |
+ |
threadUnexpectedException(); |
1341 |
+ |
} |
1342 |
+ |
} |
1343 |
+ |
}); |
1344 |
+ |
|
1345 |
+ |
try { |
1346 |
+ |
lock.writeLock().lock(); |
1347 |
+ |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1348 |
+ |
lock.writeLock().unlock(); |
1349 |
+ |
t1.start(); |
1350 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1351 |
+ |
t2.start(); |
1352 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1353 |
+ |
lock.writeLock().lock(); |
1354 |
+ |
assertTrue(lock.hasWaiters(c)); |
1355 |
+ |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
1356 |
+ |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
1357 |
+ |
c.signalAll(); |
1358 |
+ |
lock.writeLock().unlock(); |
1359 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1360 |
+ |
lock.writeLock().lock(); |
1361 |
+ |
assertFalse(lock.hasWaiters(c)); |
1362 |
+ |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1363 |
+ |
lock.writeLock().unlock(); |
1364 |
+ |
t1.join(SHORT_DELAY_MS); |
1365 |
+ |
t2.join(SHORT_DELAY_MS); |
1366 |
+ |
assertFalse(t1.isAlive()); |
1367 |
+ |
assertFalse(t2.isAlive()); |
1368 |
+ |
} |
1369 |
+ |
catch (Exception ex) { |
1370 |
+ |
unexpectedException(); |
1371 |
+ |
} |
1372 |
+ |
} |
1373 |
+ |
|
1374 |
+ |
/** |
1375 |
+ |
* toString indicates current lock state |
1376 |
+ |
*/ |
1377 |
+ |
public void testToString() { |
1378 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1379 |
+ |
String us = lock.toString(); |
1380 |
+ |
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1381 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1382 |
+ |
lock.writeLock().lock(); |
1383 |
+ |
String ws = lock.toString(); |
1384 |
+ |
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1385 |
+ |
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1386 |
+ |
lock.writeLock().unlock(); |
1387 |
+ |
lock.readLock().lock(); |
1388 |
+ |
lock.readLock().lock(); |
1389 |
+ |
String rs = lock.toString(); |
1390 |
+ |
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1391 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1392 |
+ |
} |
1393 |
+ |
|
1394 |
+ |
/** |
1395 |
+ |
* readLock.toString indicates current lock state |
1396 |
+ |
*/ |
1397 |
+ |
public void testReadLockToString() { |
1398 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1399 |
+ |
String us = lock.readLock().toString(); |
1400 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1401 |
+ |
lock.readLock().lock(); |
1402 |
+ |
lock.readLock().lock(); |
1403 |
+ |
String rs = lock.readLock().toString(); |
1404 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1405 |
+ |
} |
1406 |
+ |
|
1407 |
+ |
/** |
1408 |
+ |
* writeLock.toString indicates current lock state |
1409 |
+ |
*/ |
1410 |
+ |
public void testWriteLockToString() { |
1411 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1412 |
+ |
String us = lock.writeLock().toString(); |
1413 |
+ |
assertTrue(us.indexOf("Unlocked") >= 0); |
1414 |
+ |
lock.writeLock().lock(); |
1415 |
+ |
String ls = lock.writeLock().toString(); |
1416 |
+ |
assertTrue(ls.indexOf("Locked") >= 0); |
1417 |
+ |
} |
1418 |
+ |
|
1419 |
|
} |