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. |
5 |
> |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
> |
* Pat Fisher, Mike Judd. |
7 |
|
*/ |
8 |
|
|
9 |
|
|
22 |
|
} |
23 |
|
|
24 |
|
/** |
25 |
< |
* A simple mutex class, from the AbstractQueuedSynchronizer |
26 |
< |
* javadoc. All tests exercise this as a sample user extension. |
27 |
< |
* Other methods/features of AbstractQueuedSynchronizerTest are |
28 |
< |
* tested implicitly in ReentrantLock, ReentrantReadWriteLock, and |
29 |
< |
* Semaphore test classes |
30 |
< |
*/ |
31 |
< |
static class Mutex implements Lock, java.io.Serializable { |
32 |
< |
private static class Sync extends AbstractQueuedSynchronizer { |
33 |
< |
boolean isLocked() { return getState() == 1; } |
34 |
< |
|
35 |
< |
public boolean tryAcquireExclusive(boolean isQueued, int acquires) { |
36 |
< |
assert acquires == 1; // Does not use multiple acquires |
37 |
< |
return compareAndSetState(0, 1); |
38 |
< |
} |
39 |
< |
|
40 |
< |
public boolean tryReleaseExclusive(int releases) { |
41 |
< |
setState(0); |
42 |
< |
return true; |
43 |
< |
} |
44 |
< |
|
45 |
< |
public void checkConditionAccess(Thread thread, boolean waiting) { |
46 |
< |
if (getState() == 0) throw new IllegalMonitorStateException(); |
47 |
< |
} |
48 |
< |
|
49 |
< |
Condition newCondition() { return new ConditionObject(); } |
50 |
< |
|
51 |
< |
private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException { |
52 |
< |
s.defaultReadObject(); |
53 |
< |
setState(0); // reset to unlocked state |
54 |
< |
} |
55 |
< |
} |
56 |
< |
|
57 |
< |
private final Sync sync = new Sync(); |
58 |
< |
public boolean tryLock() { |
59 |
< |
return sync.tryAcquireExclusive(false, 1); |
25 |
> |
* A simple mutex class, adapted from the |
26 |
> |
* AbstractQueuedSynchronizer javadoc. Exclusive acquire tests |
27 |
> |
* exercise this as a sample user extension. Other |
28 |
> |
* methods/features of AbstractQueuedSynchronizerTest are tested |
29 |
> |
* via other test classes, including those for ReentrantLock, |
30 |
> |
* ReentrantReadWriteLock, and Semaphore |
31 |
> |
*/ |
32 |
> |
static class Mutex extends AbstractQueuedSynchronizer { |
33 |
> |
public boolean isHeldExclusively() { return getState() == 1; } |
34 |
> |
|
35 |
> |
public boolean tryAcquire(int acquires) { |
36 |
> |
assertTrue(acquires == 1); |
37 |
> |
return compareAndSetState(0, 1); |
38 |
|
} |
39 |
< |
public void lock() { |
40 |
< |
sync.acquireExclusiveUninterruptibly(1); |
39 |
> |
|
40 |
> |
public boolean tryRelease(int releases) { |
41 |
> |
if (getState() == 0) throw new IllegalMonitorStateException(); |
42 |
> |
setState(0); |
43 |
> |
return true; |
44 |
|
} |
45 |
< |
public void lockInterruptibly() throws InterruptedException { |
46 |
< |
sync.acquireExclusiveInterruptibly(1); |
45 |
> |
|
46 |
> |
public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); } |
47 |
> |
|
48 |
> |
} |
49 |
> |
|
50 |
> |
|
51 |
> |
/** |
52 |
> |
* A simple latch class, to test shared mode. |
53 |
> |
*/ |
54 |
> |
static class BooleanLatch extends AbstractQueuedSynchronizer { |
55 |
> |
public boolean isSignalled() { return getState() != 0; } |
56 |
> |
|
57 |
> |
public int tryAcquireShared(int ignore) { |
58 |
> |
return isSignalled()? 1 : -1; |
59 |
|
} |
60 |
< |
public boolean tryLock(long timeout, TimeUnit unit) throws InterruptedException { |
61 |
< |
return sync.acquireExclusiveTimed(1, unit.toNanos(timeout)); |
60 |
> |
|
61 |
> |
public boolean tryReleaseShared(int ignore) { |
62 |
> |
setState(1); |
63 |
> |
return true; |
64 |
|
} |
70 |
– |
public void unlock() { sync.releaseExclusive(1); } |
71 |
– |
public Condition newCondition() { return sync.newCondition(); } |
72 |
– |
public boolean isLocked() { return sync.isLocked(); } |
73 |
– |
public boolean hasQueuedThreads() { return sync.hasQueuedThreads(); } |
65 |
|
} |
66 |
|
|
67 |
|
/** |
68 |
< |
* A runnable calling lockInterruptibly |
69 |
< |
*/ |
70 |
< |
class InterruptibleLockRunnable implements Runnable { |
71 |
< |
final Mutex lock; |
72 |
< |
InterruptibleLockRunnable(Mutex l) { lock = l; } |
73 |
< |
public void run() { |
74 |
< |
try { |
75 |
< |
lock.lockInterruptibly(); |
85 |
< |
} catch(InterruptedException success){} |
68 |
> |
* A runnable calling acquireInterruptibly that does not expect to |
69 |
> |
* be interrupted. |
70 |
> |
*/ |
71 |
> |
class InterruptibleSyncRunnable extends CheckedRunnable { |
72 |
> |
final Mutex sync; |
73 |
> |
InterruptibleSyncRunnable(Mutex l) { sync = l; } |
74 |
> |
public void realRun() throws InterruptedException { |
75 |
> |
sync.acquireInterruptibly(1); |
76 |
|
} |
77 |
|
} |
78 |
|
|
79 |
|
|
80 |
|
/** |
81 |
< |
* A runnable calling lockInterruptibly that expects to be |
82 |
< |
* interrupted |
81 |
> |
* A runnable calling acquireInterruptibly that expects to be |
82 |
> |
* interrupted. |
83 |
|
*/ |
84 |
< |
class InterruptedLockRunnable implements Runnable { |
85 |
< |
final Mutex lock; |
86 |
< |
InterruptedLockRunnable(Mutex l) { lock = l; } |
87 |
< |
public void run() { |
88 |
< |
try { |
99 |
< |
lock.lockInterruptibly(); |
100 |
< |
threadShouldThrow(); |
101 |
< |
} catch(InterruptedException success){} |
84 |
> |
class InterruptedSyncRunnable extends CheckedInterruptedRunnable { |
85 |
> |
final Mutex sync; |
86 |
> |
InterruptedSyncRunnable(Mutex l) { sync = l; } |
87 |
> |
public void realRun() throws InterruptedException { |
88 |
> |
sync.acquireInterruptibly(1); |
89 |
|
} |
90 |
|
} |
91 |
< |
|
91 |
> |
|
92 |
|
/** |
93 |
< |
* locking an unlocked lock succeeds |
93 |
> |
* isHeldExclusively is false upon construction |
94 |
|
*/ |
95 |
< |
public void testLock() { |
96 |
< |
Mutex rl = new Mutex(); |
97 |
< |
rl.lock(); |
111 |
< |
assertTrue(rl.isLocked()); |
112 |
< |
rl.unlock(); |
95 |
> |
public void testIsHeldExclusively() { |
96 |
> |
Mutex rl = new Mutex(); |
97 |
> |
assertFalse(rl.isHeldExclusively()); |
98 |
|
} |
99 |
|
|
100 |
|
/** |
101 |
< |
* tryLock on an unlocked lock succeeds |
101 |
> |
* acquiring released sync succeeds |
102 |
|
*/ |
103 |
< |
public void testTryLock() { |
104 |
< |
Mutex rl = new Mutex(); |
105 |
< |
assertTrue(rl.tryLock()); |
106 |
< |
assertTrue(rl.isLocked()); |
107 |
< |
rl.unlock(); |
103 |
> |
public void testAcquire() { |
104 |
> |
Mutex rl = new Mutex(); |
105 |
> |
rl.acquire(1); |
106 |
> |
assertTrue(rl.isHeldExclusively()); |
107 |
> |
rl.release(1); |
108 |
> |
assertFalse(rl.isHeldExclusively()); |
109 |
> |
} |
110 |
> |
|
111 |
> |
/** |
112 |
> |
* tryAcquire on an released sync succeeds |
113 |
> |
*/ |
114 |
> |
public void testTryAcquire() { |
115 |
> |
Mutex rl = new Mutex(); |
116 |
> |
assertTrue(rl.tryAcquire(1)); |
117 |
> |
assertTrue(rl.isHeldExclusively()); |
118 |
> |
rl.release(1); |
119 |
|
} |
120 |
|
|
121 |
|
/** |
122 |
|
* hasQueuedThreads reports whether there are waiting threads |
123 |
|
*/ |
124 |
< |
public void testhasQueuedThreads() { |
125 |
< |
final Mutex lock = new Mutex(); |
126 |
< |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
127 |
< |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
128 |
< |
try { |
129 |
< |
assertFalse(lock.hasQueuedThreads()); |
130 |
< |
lock.lock(); |
131 |
< |
t1.start(); |
132 |
< |
Thread.sleep(SHORT_DELAY_MS); |
133 |
< |
assertTrue(lock.hasQueuedThreads()); |
134 |
< |
t2.start(); |
135 |
< |
Thread.sleep(SHORT_DELAY_MS); |
136 |
< |
assertTrue(lock.hasQueuedThreads()); |
137 |
< |
t1.interrupt(); |
138 |
< |
Thread.sleep(SHORT_DELAY_MS); |
139 |
< |
assertTrue(lock.hasQueuedThreads()); |
140 |
< |
lock.unlock(); |
141 |
< |
Thread.sleep(SHORT_DELAY_MS); |
142 |
< |
assertFalse(lock.hasQueuedThreads()); |
143 |
< |
t1.join(); |
144 |
< |
t2.join(); |
149 |
< |
} catch(Exception e){ |
150 |
< |
unexpectedException(); |
151 |
< |
} |
152 |
< |
} |
124 |
> |
public void testhasQueuedThreads() throws InterruptedException { |
125 |
> |
final Mutex sync = new Mutex(); |
126 |
> |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
127 |
> |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
128 |
> |
assertFalse(sync.hasQueuedThreads()); |
129 |
> |
sync.acquire(1); |
130 |
> |
t1.start(); |
131 |
> |
Thread.sleep(SHORT_DELAY_MS); |
132 |
> |
assertTrue(sync.hasQueuedThreads()); |
133 |
> |
t2.start(); |
134 |
> |
Thread.sleep(SHORT_DELAY_MS); |
135 |
> |
assertTrue(sync.hasQueuedThreads()); |
136 |
> |
t1.interrupt(); |
137 |
> |
Thread.sleep(SHORT_DELAY_MS); |
138 |
> |
assertTrue(sync.hasQueuedThreads()); |
139 |
> |
sync.release(1); |
140 |
> |
Thread.sleep(SHORT_DELAY_MS); |
141 |
> |
assertFalse(sync.hasQueuedThreads()); |
142 |
> |
t1.join(); |
143 |
> |
t2.join(); |
144 |
> |
} |
145 |
|
|
146 |
|
/** |
147 |
< |
* timed tryLock is interruptible. |
147 |
> |
* isQueued(null) throws NPE |
148 |
|
*/ |
149 |
< |
public void testInterruptedException2() { |
150 |
< |
final Mutex lock = new Mutex(); |
151 |
< |
lock.lock(); |
152 |
< |
Thread t = new Thread(new Runnable() { |
153 |
< |
public void run() { |
154 |
< |
try { |
163 |
< |
lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS); |
164 |
< |
threadShouldThrow(); |
165 |
< |
} catch(InterruptedException success){} |
166 |
< |
} |
167 |
< |
}); |
168 |
< |
try { |
169 |
< |
t.start(); |
170 |
< |
t.interrupt(); |
171 |
< |
} catch(Exception e){ |
172 |
< |
unexpectedException(); |
173 |
< |
} |
149 |
> |
public void testIsQueuedNPE() { |
150 |
> |
final Mutex sync = new Mutex(); |
151 |
> |
try { |
152 |
> |
sync.isQueued(null); |
153 |
> |
shouldThrow(); |
154 |
> |
} catch (NullPointerException success) {} |
155 |
|
} |
156 |
|
|
157 |
+ |
/** |
158 |
+ |
* isQueued reports whether a thread is queued. |
159 |
+ |
*/ |
160 |
+ |
public void testIsQueued() throws InterruptedException { |
161 |
+ |
final Mutex sync = new Mutex(); |
162 |
+ |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
163 |
+ |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
164 |
+ |
assertFalse(sync.isQueued(t1)); |
165 |
+ |
assertFalse(sync.isQueued(t2)); |
166 |
+ |
sync.acquire(1); |
167 |
+ |
t1.start(); |
168 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
169 |
+ |
assertTrue(sync.isQueued(t1)); |
170 |
+ |
t2.start(); |
171 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
172 |
+ |
assertTrue(sync.isQueued(t1)); |
173 |
+ |
assertTrue(sync.isQueued(t2)); |
174 |
+ |
t1.interrupt(); |
175 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
176 |
+ |
assertFalse(sync.isQueued(t1)); |
177 |
+ |
assertTrue(sync.isQueued(t2)); |
178 |
+ |
sync.release(1); |
179 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
180 |
+ |
assertFalse(sync.isQueued(t1)); |
181 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
182 |
+ |
assertFalse(sync.isQueued(t2)); |
183 |
+ |
t1.join(); |
184 |
+ |
t2.join(); |
185 |
+ |
} |
186 |
+ |
|
187 |
+ |
/** |
188 |
+ |
* getFirstQueuedThread returns first waiting thread or null if none |
189 |
+ |
*/ |
190 |
+ |
public void testGetFirstQueuedThread() throws InterruptedException { |
191 |
+ |
final Mutex sync = new Mutex(); |
192 |
+ |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
193 |
+ |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
194 |
+ |
assertNull(sync.getFirstQueuedThread()); |
195 |
+ |
sync.acquire(1); |
196 |
+ |
t1.start(); |
197 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
198 |
+ |
assertEquals(t1, sync.getFirstQueuedThread()); |
199 |
+ |
t2.start(); |
200 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
201 |
+ |
assertEquals(t1, sync.getFirstQueuedThread()); |
202 |
+ |
t1.interrupt(); |
203 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
204 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
205 |
+ |
assertEquals(t2, sync.getFirstQueuedThread()); |
206 |
+ |
sync.release(1); |
207 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
208 |
+ |
assertNull(sync.getFirstQueuedThread()); |
209 |
+ |
t1.join(); |
210 |
+ |
t2.join(); |
211 |
+ |
} |
212 |
+ |
|
213 |
+ |
|
214 |
+ |
/** |
215 |
+ |
* hasContended reports false if no thread has ever blocked, else true |
216 |
+ |
*/ |
217 |
+ |
public void testHasContended() throws InterruptedException { |
218 |
+ |
final Mutex sync = new Mutex(); |
219 |
+ |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
220 |
+ |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
221 |
+ |
assertFalse(sync.hasContended()); |
222 |
+ |
sync.acquire(1); |
223 |
+ |
t1.start(); |
224 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
225 |
+ |
assertTrue(sync.hasContended()); |
226 |
+ |
t2.start(); |
227 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
228 |
+ |
assertTrue(sync.hasContended()); |
229 |
+ |
t1.interrupt(); |
230 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
231 |
+ |
assertTrue(sync.hasContended()); |
232 |
+ |
sync.release(1); |
233 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
234 |
+ |
assertTrue(sync.hasContended()); |
235 |
+ |
t1.join(); |
236 |
+ |
t2.join(); |
237 |
+ |
} |
238 |
+ |
|
239 |
+ |
/** |
240 |
+ |
* getQueuedThreads includes waiting threads |
241 |
+ |
*/ |
242 |
+ |
public void testGetQueuedThreads() throws InterruptedException { |
243 |
+ |
final Mutex sync = new Mutex(); |
244 |
+ |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
245 |
+ |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
246 |
+ |
assertTrue(sync.getQueuedThreads().isEmpty()); |
247 |
+ |
sync.acquire(1); |
248 |
+ |
assertTrue(sync.getQueuedThreads().isEmpty()); |
249 |
+ |
t1.start(); |
250 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
251 |
+ |
assertTrue(sync.getQueuedThreads().contains(t1)); |
252 |
+ |
t2.start(); |
253 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
254 |
+ |
assertTrue(sync.getQueuedThreads().contains(t1)); |
255 |
+ |
assertTrue(sync.getQueuedThreads().contains(t2)); |
256 |
+ |
t1.interrupt(); |
257 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
258 |
+ |
assertFalse(sync.getQueuedThreads().contains(t1)); |
259 |
+ |
assertTrue(sync.getQueuedThreads().contains(t2)); |
260 |
+ |
sync.release(1); |
261 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
262 |
+ |
assertTrue(sync.getQueuedThreads().isEmpty()); |
263 |
+ |
t1.join(); |
264 |
+ |
t2.join(); |
265 |
+ |
} |
266 |
+ |
|
267 |
+ |
/** |
268 |
+ |
* getExclusiveQueuedThreads includes waiting threads |
269 |
+ |
*/ |
270 |
+ |
public void testGetExclusiveQueuedThreads() throws InterruptedException { |
271 |
+ |
final Mutex sync = new Mutex(); |
272 |
+ |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
273 |
+ |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
274 |
+ |
assertTrue(sync.getExclusiveQueuedThreads().isEmpty()); |
275 |
+ |
sync.acquire(1); |
276 |
+ |
assertTrue(sync.getExclusiveQueuedThreads().isEmpty()); |
277 |
+ |
t1.start(); |
278 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
279 |
+ |
assertTrue(sync.getExclusiveQueuedThreads().contains(t1)); |
280 |
+ |
t2.start(); |
281 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
282 |
+ |
assertTrue(sync.getExclusiveQueuedThreads().contains(t1)); |
283 |
+ |
assertTrue(sync.getExclusiveQueuedThreads().contains(t2)); |
284 |
+ |
t1.interrupt(); |
285 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
286 |
+ |
assertFalse(sync.getExclusiveQueuedThreads().contains(t1)); |
287 |
+ |
assertTrue(sync.getExclusiveQueuedThreads().contains(t2)); |
288 |
+ |
sync.release(1); |
289 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
290 |
+ |
assertTrue(sync.getExclusiveQueuedThreads().isEmpty()); |
291 |
+ |
t1.join(); |
292 |
+ |
t2.join(); |
293 |
+ |
} |
294 |
+ |
|
295 |
+ |
/** |
296 |
+ |
* getSharedQueuedThreads does not include exclusively waiting threads |
297 |
+ |
*/ |
298 |
+ |
public void testGetSharedQueuedThreads() throws InterruptedException { |
299 |
+ |
final Mutex sync = new Mutex(); |
300 |
+ |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
301 |
+ |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
302 |
+ |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
303 |
+ |
sync.acquire(1); |
304 |
+ |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
305 |
+ |
t1.start(); |
306 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
307 |
+ |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
308 |
+ |
t2.start(); |
309 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
310 |
+ |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
311 |
+ |
t1.interrupt(); |
312 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
313 |
+ |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
314 |
+ |
sync.release(1); |
315 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
316 |
+ |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
317 |
+ |
t1.join(); |
318 |
+ |
t2.join(); |
319 |
+ |
} |
320 |
+ |
|
321 |
+ |
/** |
322 |
+ |
* tryAcquireNanos is interruptible. |
323 |
+ |
*/ |
324 |
+ |
public void testInterruptedException2() throws InterruptedException { |
325 |
+ |
final Mutex sync = new Mutex(); |
326 |
+ |
sync.acquire(1); |
327 |
+ |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
328 |
+ |
public void realRun() throws InterruptedException { |
329 |
+ |
sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000); |
330 |
+ |
}}); |
331 |
+ |
|
332 |
+ |
t.start(); |
333 |
+ |
t.interrupt(); |
334 |
+ |
t.join(); |
335 |
+ |
} |
336 |
+ |
|
337 |
+ |
|
338 |
+ |
/** |
339 |
+ |
* TryAcquire on exclusively held sync fails |
340 |
+ |
*/ |
341 |
+ |
public void testTryAcquireWhenSynced() throws InterruptedException { |
342 |
+ |
final Mutex sync = new Mutex(); |
343 |
+ |
sync.acquire(1); |
344 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
345 |
+ |
public void realRun() { |
346 |
+ |
threadAssertFalse(sync.tryAcquire(1)); |
347 |
+ |
}}); |
348 |
+ |
|
349 |
+ |
t.start(); |
350 |
+ |
t.join(); |
351 |
+ |
sync.release(1); |
352 |
+ |
} |
353 |
+ |
|
354 |
+ |
/** |
355 |
+ |
* tryAcquireNanos on an exclusively held sync times out |
356 |
+ |
*/ |
357 |
+ |
public void testAcquireNanos_Timeout() throws InterruptedException { |
358 |
+ |
final Mutex sync = new Mutex(); |
359 |
+ |
sync.acquire(1); |
360 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
361 |
+ |
public void realRun() throws InterruptedException { |
362 |
+ |
threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000)); |
363 |
+ |
}}); |
364 |
+ |
|
365 |
+ |
t.start(); |
366 |
+ |
t.join(); |
367 |
+ |
sync.release(1); |
368 |
+ |
} |
369 |
+ |
|
370 |
+ |
|
371 |
+ |
/** |
372 |
+ |
* getState is true when acquired and false when not |
373 |
+ |
*/ |
374 |
+ |
public void testGetState() throws InterruptedException { |
375 |
+ |
final Mutex sync = new Mutex(); |
376 |
+ |
sync.acquire(1); |
377 |
+ |
assertTrue(sync.isHeldExclusively()); |
378 |
+ |
sync.release(1); |
379 |
+ |
assertFalse(sync.isHeldExclusively()); |
380 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
381 |
+ |
public void realRun() throws InterruptedException { |
382 |
+ |
sync.acquire(1); |
383 |
+ |
Thread.sleep(SMALL_DELAY_MS); |
384 |
+ |
sync.release(1); |
385 |
+ |
}}); |
386 |
+ |
|
387 |
+ |
t.start(); |
388 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
389 |
+ |
assertTrue(sync.isHeldExclusively()); |
390 |
+ |
t.join(); |
391 |
+ |
assertFalse(sync.isHeldExclusively()); |
392 |
+ |
} |
393 |
+ |
|
394 |
+ |
|
395 |
+ |
/** |
396 |
+ |
* acquireInterruptibly is interruptible. |
397 |
+ |
*/ |
398 |
+ |
public void testAcquireInterruptibly1() throws InterruptedException { |
399 |
+ |
final Mutex sync = new Mutex(); |
400 |
+ |
sync.acquire(1); |
401 |
+ |
Thread t = new Thread(new InterruptedSyncRunnable(sync)); |
402 |
+ |
|
403 |
+ |
t.start(); |
404 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
405 |
+ |
t.interrupt(); |
406 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
407 |
+ |
sync.release(1); |
408 |
+ |
t.join(); |
409 |
+ |
} |
410 |
+ |
|
411 |
+ |
/** |
412 |
+ |
* acquireInterruptibly succeeds when released, else is interruptible |
413 |
+ |
*/ |
414 |
+ |
public void testAcquireInterruptibly2() throws InterruptedException { |
415 |
+ |
final Mutex sync = new Mutex(); |
416 |
+ |
sync.acquireInterruptibly(1); |
417 |
+ |
Thread t = new Thread(new InterruptedSyncRunnable(sync)); |
418 |
+ |
t.start(); |
419 |
+ |
t.interrupt(); |
420 |
+ |
assertTrue(sync.isHeldExclusively()); |
421 |
+ |
t.join(); |
422 |
+ |
} |
423 |
+ |
|
424 |
+ |
/** |
425 |
+ |
* owns is true for a condition created by sync else false |
426 |
+ |
*/ |
427 |
+ |
public void testOwns() { |
428 |
+ |
final Mutex sync = new Mutex(); |
429 |
+ |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
430 |
+ |
final Mutex sync2 = new Mutex(); |
431 |
+ |
assertTrue(sync.owns(c)); |
432 |
+ |
assertFalse(sync2.owns(c)); |
433 |
+ |
} |
434 |
+ |
|
435 |
+ |
/** |
436 |
+ |
* Calling await without holding sync throws IllegalMonitorStateException |
437 |
+ |
*/ |
438 |
+ |
public void testAwait_IllegalMonitor() throws InterruptedException { |
439 |
+ |
final Mutex sync = new Mutex(); |
440 |
+ |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
441 |
+ |
try { |
442 |
+ |
c.await(); |
443 |
+ |
shouldThrow(); |
444 |
+ |
} catch (IllegalMonitorStateException success) {} |
445 |
+ |
} |
446 |
|
|
447 |
|
/** |
448 |
< |
* TryLock on a locked lock fails |
448 |
> |
* Calling signal without holding sync throws IllegalMonitorStateException |
449 |
|
*/ |
450 |
< |
public void testTryLockWhenLocked() { |
451 |
< |
final Mutex lock = new Mutex(); |
452 |
< |
lock.lock(); |
453 |
< |
Thread t = new Thread(new Runnable() { |
454 |
< |
public void run() { |
455 |
< |
threadAssertFalse(lock.tryLock()); |
456 |
< |
} |
457 |
< |
}); |
188 |
< |
try { |
189 |
< |
t.start(); |
190 |
< |
t.join(); |
191 |
< |
lock.unlock(); |
192 |
< |
} catch(Exception e){ |
193 |
< |
unexpectedException(); |
194 |
< |
} |
195 |
< |
} |
450 |
> |
public void testSignal_IllegalMonitor() { |
451 |
> |
final Mutex sync = new Mutex(); |
452 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
453 |
> |
try { |
454 |
> |
c.signal(); |
455 |
> |
shouldThrow(); |
456 |
> |
} catch (IllegalMonitorStateException success) {} |
457 |
> |
} |
458 |
|
|
459 |
|
/** |
460 |
< |
* Timed tryLock on a locked lock times out |
460 |
> |
* awaitNanos without a signal times out |
461 |
|
*/ |
462 |
< |
public void testTryLock_Timeout() { |
463 |
< |
final Mutex lock = new Mutex(); |
464 |
< |
lock.lock(); |
465 |
< |
Thread t = new Thread(new Runnable() { |
466 |
< |
public void run() { |
467 |
< |
try { |
468 |
< |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
207 |
< |
} catch (Exception ex) { |
208 |
< |
threadUnexpectedException(); |
209 |
< |
} |
210 |
< |
} |
211 |
< |
}); |
212 |
< |
try { |
213 |
< |
t.start(); |
214 |
< |
t.join(); |
215 |
< |
lock.unlock(); |
216 |
< |
} catch(Exception e){ |
217 |
< |
unexpectedException(); |
218 |
< |
} |
219 |
< |
} |
220 |
< |
|
221 |
< |
|
222 |
< |
/** |
223 |
< |
* isLocked is true when locked and false when not |
224 |
< |
*/ |
225 |
< |
public void testIsLocked() { |
226 |
< |
final Mutex lock = new Mutex(); |
227 |
< |
lock.lock(); |
228 |
< |
assertTrue(lock.isLocked()); |
229 |
< |
lock.unlock(); |
230 |
< |
assertFalse(lock.isLocked()); |
231 |
< |
Thread t = new Thread(new Runnable() { |
232 |
< |
public void run() { |
233 |
< |
lock.lock(); |
234 |
< |
try { |
235 |
< |
Thread.sleep(SMALL_DELAY_MS); |
236 |
< |
} |
237 |
< |
catch(Exception e) { |
238 |
< |
threadUnexpectedException(); |
239 |
< |
} |
240 |
< |
lock.unlock(); |
241 |
< |
} |
242 |
< |
}); |
243 |
< |
try { |
244 |
< |
t.start(); |
245 |
< |
Thread.sleep(SHORT_DELAY_MS); |
246 |
< |
assertTrue(lock.isLocked()); |
247 |
< |
t.join(); |
248 |
< |
assertFalse(lock.isLocked()); |
249 |
< |
} catch(Exception e){ |
250 |
< |
unexpectedException(); |
251 |
< |
} |
462 |
> |
public void testAwaitNanos_Timeout() throws InterruptedException { |
463 |
> |
final Mutex sync = new Mutex(); |
464 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
465 |
> |
sync.acquire(1); |
466 |
> |
long t = c.awaitNanos(100); |
467 |
> |
assertTrue(t <= 0); |
468 |
> |
sync.release(1); |
469 |
|
} |
470 |
|
|
471 |
+ |
/** |
472 |
+ |
* Timed await without a signal times out |
473 |
+ |
*/ |
474 |
+ |
public void testAwait_Timeout() throws InterruptedException { |
475 |
+ |
final Mutex sync = new Mutex(); |
476 |
+ |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
477 |
+ |
sync.acquire(1); |
478 |
+ |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
479 |
+ |
sync.release(1); |
480 |
+ |
} |
481 |
|
|
482 |
|
/** |
483 |
< |
* lockInterruptibly is interruptible. |
483 |
> |
* awaitUntil without a signal times out |
484 |
|
*/ |
485 |
< |
public void testLockInterruptibly1() { |
486 |
< |
final Mutex lock = new Mutex(); |
487 |
< |
lock.lock(); |
488 |
< |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
489 |
< |
try { |
490 |
< |
t.start(); |
491 |
< |
t.interrupt(); |
492 |
< |
lock.unlock(); |
266 |
< |
t.join(); |
267 |
< |
} catch(Exception e){ |
268 |
< |
unexpectedException(); |
269 |
< |
} |
270 |
< |
} |
485 |
> |
public void testAwaitUntil_Timeout() throws InterruptedException { |
486 |
> |
final Mutex sync = new Mutex(); |
487 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
488 |
> |
sync.acquire(1); |
489 |
> |
java.util.Date d = new java.util.Date(); |
490 |
> |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
491 |
> |
sync.release(1); |
492 |
> |
} |
493 |
|
|
494 |
|
/** |
495 |
< |
* lockInterruptibly succeeds when unlocked, else is interruptible |
495 |
> |
* await returns when signalled |
496 |
|
*/ |
497 |
< |
public void testLockInterruptibly2() { |
498 |
< |
final Mutex lock = new Mutex(); |
499 |
< |
try { |
500 |
< |
lock.lockInterruptibly(); |
501 |
< |
} catch(Exception e) { |
502 |
< |
unexpectedException(); |
503 |
< |
} |
504 |
< |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
497 |
> |
public void testAwait() throws InterruptedException { |
498 |
> |
final Mutex sync = new Mutex(); |
499 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
500 |
> |
Thread t = new Thread(new CheckedRunnable() { |
501 |
> |
public void realRun() throws InterruptedException { |
502 |
> |
sync.acquire(1); |
503 |
> |
c.await(); |
504 |
> |
sync.release(1); |
505 |
> |
}}); |
506 |
> |
|
507 |
> |
t.start(); |
508 |
> |
Thread.sleep(SHORT_DELAY_MS); |
509 |
> |
sync.acquire(1); |
510 |
> |
c.signal(); |
511 |
> |
sync.release(1); |
512 |
> |
t.join(SHORT_DELAY_MS); |
513 |
> |
assertFalse(t.isAlive()); |
514 |
> |
} |
515 |
> |
|
516 |
> |
|
517 |
> |
|
518 |
> |
/** |
519 |
> |
* hasWaiters throws NPE if null |
520 |
> |
*/ |
521 |
> |
public void testHasWaitersNPE() { |
522 |
> |
final Mutex sync = new Mutex(); |
523 |
|
try { |
524 |
< |
t.start(); |
525 |
< |
t.interrupt(); |
526 |
< |
assertTrue(lock.isLocked()); |
287 |
< |
t.join(); |
288 |
< |
} catch(Exception e){ |
289 |
< |
unexpectedException(); |
290 |
< |
} |
524 |
> |
sync.hasWaiters(null); |
525 |
> |
shouldThrow(); |
526 |
> |
} catch (NullPointerException success) {} |
527 |
|
} |
528 |
|
|
529 |
|
/** |
530 |
< |
* Calling await without holding lock throws IllegalMonitorStateException |
530 |
> |
* getWaitQueueLength throws NPE if null |
531 |
|
*/ |
532 |
< |
public void testAwait_IllegalMonitor() { |
533 |
< |
final Mutex lock = new Mutex(); |
298 |
< |
final Condition c = lock.newCondition(); |
532 |
> |
public void testGetWaitQueueLengthNPE() { |
533 |
> |
final Mutex sync = new Mutex(); |
534 |
|
try { |
535 |
< |
c.await(); |
535 |
> |
sync.getWaitQueueLength(null); |
536 |
|
shouldThrow(); |
537 |
< |
} |
303 |
< |
catch (IllegalMonitorStateException success) { |
304 |
< |
} |
305 |
< |
catch (Exception ex) { |
306 |
< |
unexpectedException(); |
307 |
< |
} |
537 |
> |
} catch (NullPointerException success) {} |
538 |
|
} |
539 |
|
|
540 |
+ |
|
541 |
|
/** |
542 |
< |
* Calling signal without holding lock throws IllegalMonitorStateException |
542 |
> |
* getWaitingThreads throws NPE if null |
543 |
|
*/ |
544 |
< |
public void testSignal_IllegalMonitor() { |
545 |
< |
final Mutex lock = new Mutex(); |
315 |
< |
final Condition c = lock.newCondition(); |
544 |
> |
public void testGetWaitingThreadsNPE() { |
545 |
> |
final Mutex sync = new Mutex(); |
546 |
|
try { |
547 |
< |
c.signal(); |
547 |
> |
sync.getWaitingThreads(null); |
548 |
|
shouldThrow(); |
549 |
< |
} |
320 |
< |
catch (IllegalMonitorStateException success) { |
321 |
< |
} |
322 |
< |
catch (Exception ex) { |
323 |
< |
unexpectedException(); |
324 |
< |
} |
549 |
> |
} catch (NullPointerException success) {} |
550 |
|
} |
551 |
|
|
552 |
+ |
|
553 |
|
/** |
554 |
< |
* awaitNanos without a signal times out |
554 |
> |
* hasWaiters throws IAE if not owned |
555 |
|
*/ |
556 |
< |
public void testAwaitNanos_Timeout() { |
557 |
< |
final Mutex lock = new Mutex(); |
558 |
< |
final Condition c = lock.newCondition(); |
559 |
< |
try { |
560 |
< |
lock.lock(); |
561 |
< |
long t = c.awaitNanos(100); |
562 |
< |
assertTrue(t <= 0); |
563 |
< |
lock.unlock(); |
338 |
< |
} |
339 |
< |
catch (Exception ex) { |
340 |
< |
unexpectedException(); |
341 |
< |
} |
556 |
> |
public void testHasWaitersIAE() { |
557 |
> |
final Mutex sync = new Mutex(); |
558 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
559 |
> |
final Mutex sync2 = new Mutex(); |
560 |
> |
try { |
561 |
> |
sync2.hasWaiters(c); |
562 |
> |
shouldThrow(); |
563 |
> |
} catch (IllegalArgumentException success) {} |
564 |
|
} |
565 |
|
|
566 |
|
/** |
567 |
< |
* timed await without a signal times out |
567 |
> |
* hasWaiters throws IMSE if not synced |
568 |
|
*/ |
569 |
< |
public void testAwait_Timeout() { |
570 |
< |
final Mutex lock = new Mutex(); |
571 |
< |
final Condition c = lock.newCondition(); |
572 |
< |
try { |
573 |
< |
lock.lock(); |
574 |
< |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
575 |
< |
lock.unlock(); |
354 |
< |
} |
355 |
< |
catch (Exception ex) { |
356 |
< |
unexpectedException(); |
357 |
< |
} |
569 |
> |
public void testHasWaitersIMSE() { |
570 |
> |
final Mutex sync = new Mutex(); |
571 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
572 |
> |
try { |
573 |
> |
sync.hasWaiters(c); |
574 |
> |
shouldThrow(); |
575 |
> |
} catch (IllegalMonitorStateException success) {} |
576 |
|
} |
577 |
|
|
578 |
+ |
|
579 |
|
/** |
580 |
< |
* awaitUntil without a signal times out |
580 |
> |
* getWaitQueueLength throws IAE if not owned |
581 |
|
*/ |
582 |
< |
public void testAwaitUntil_Timeout() { |
583 |
< |
final Mutex lock = new Mutex(); |
584 |
< |
final Condition c = lock.newCondition(); |
585 |
< |
try { |
586 |
< |
lock.lock(); |
587 |
< |
java.util.Date d = new java.util.Date(); |
588 |
< |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
589 |
< |
lock.unlock(); |
371 |
< |
} |
372 |
< |
catch (Exception ex) { |
373 |
< |
unexpectedException(); |
374 |
< |
} |
582 |
> |
public void testGetWaitQueueLengthIAE() { |
583 |
> |
final Mutex sync = new Mutex(); |
584 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
585 |
> |
final Mutex sync2 = new Mutex(); |
586 |
> |
try { |
587 |
> |
sync2.getWaitQueueLength(c); |
588 |
> |
shouldThrow(); |
589 |
> |
} catch (IllegalArgumentException success) {} |
590 |
|
} |
591 |
|
|
592 |
|
/** |
593 |
< |
* await returns when signalled |
593 |
> |
* getWaitQueueLength throws IMSE if not synced |
594 |
|
*/ |
595 |
< |
public void testAwait() { |
596 |
< |
final Mutex lock = new Mutex(); |
597 |
< |
final Condition c = lock.newCondition(); |
598 |
< |
Thread t = new Thread(new Runnable() { |
599 |
< |
public void run() { |
600 |
< |
try { |
601 |
< |
lock.lock(); |
602 |
< |
c.await(); |
603 |
< |
lock.unlock(); |
604 |
< |
} |
605 |
< |
catch(InterruptedException e) { |
606 |
< |
threadUnexpectedException(); |
607 |
< |
} |
608 |
< |
} |
609 |
< |
}); |
610 |
< |
|
611 |
< |
try { |
612 |
< |
t.start(); |
613 |
< |
Thread.sleep(SHORT_DELAY_MS); |
614 |
< |
lock.lock(); |
615 |
< |
c.signal(); |
401 |
< |
lock.unlock(); |
402 |
< |
t.join(SHORT_DELAY_MS); |
403 |
< |
assertFalse(t.isAlive()); |
404 |
< |
} |
405 |
< |
catch (Exception ex) { |
406 |
< |
unexpectedException(); |
407 |
< |
} |
595 |
> |
public void testGetWaitQueueLengthIMSE() { |
596 |
> |
final Mutex sync = new Mutex(); |
597 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
598 |
> |
try { |
599 |
> |
sync.getWaitQueueLength(c); |
600 |
> |
shouldThrow(); |
601 |
> |
} catch (IllegalMonitorStateException success) {} |
602 |
> |
} |
603 |
> |
|
604 |
> |
|
605 |
> |
/** |
606 |
> |
* getWaitingThreads throws IAE if not owned |
607 |
> |
*/ |
608 |
> |
public void testGetWaitingThreadsIAE() { |
609 |
> |
final Mutex sync = new Mutex(); |
610 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
611 |
> |
final Mutex sync2 = new Mutex(); |
612 |
> |
try { |
613 |
> |
sync2.getWaitingThreads(c); |
614 |
> |
shouldThrow(); |
615 |
> |
} catch (IllegalArgumentException success) {} |
616 |
|
} |
617 |
< |
|
617 |
> |
|
618 |
> |
/** |
619 |
> |
* getWaitingThreads throws IMSE if not synced |
620 |
> |
*/ |
621 |
> |
public void testGetWaitingThreadsIMSE() { |
622 |
> |
final Mutex sync = new Mutex(); |
623 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
624 |
> |
try { |
625 |
> |
sync.getWaitingThreads(c); |
626 |
> |
shouldThrow(); |
627 |
> |
} catch (IllegalMonitorStateException success) {} |
628 |
> |
} |
629 |
> |
|
630 |
> |
|
631 |
> |
|
632 |
> |
/** |
633 |
> |
* hasWaiters returns true when a thread is waiting, else false |
634 |
> |
*/ |
635 |
> |
public void testHasWaiters() throws InterruptedException { |
636 |
> |
final Mutex sync = new Mutex(); |
637 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
638 |
> |
Thread t = new Thread(new CheckedRunnable() { |
639 |
> |
public void realRun() throws InterruptedException { |
640 |
> |
sync.acquire(1); |
641 |
> |
threadAssertFalse(sync.hasWaiters(c)); |
642 |
> |
threadAssertEquals(0, sync.getWaitQueueLength(c)); |
643 |
> |
c.await(); |
644 |
> |
sync.release(1); |
645 |
> |
}}); |
646 |
> |
|
647 |
> |
t.start(); |
648 |
> |
Thread.sleep(SHORT_DELAY_MS); |
649 |
> |
sync.acquire(1); |
650 |
> |
assertTrue(sync.hasWaiters(c)); |
651 |
> |
assertEquals(1, sync.getWaitQueueLength(c)); |
652 |
> |
c.signal(); |
653 |
> |
sync.release(1); |
654 |
> |
Thread.sleep(SHORT_DELAY_MS); |
655 |
> |
sync.acquire(1); |
656 |
> |
assertFalse(sync.hasWaiters(c)); |
657 |
> |
assertEquals(0, sync.getWaitQueueLength(c)); |
658 |
> |
sync.release(1); |
659 |
> |
t.join(SHORT_DELAY_MS); |
660 |
> |
assertFalse(t.isAlive()); |
661 |
> |
} |
662 |
> |
|
663 |
> |
/** |
664 |
> |
* getWaitQueueLength returns number of waiting threads |
665 |
> |
*/ |
666 |
> |
public void testGetWaitQueueLength() throws InterruptedException { |
667 |
> |
final Mutex sync = new Mutex(); |
668 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
669 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
670 |
> |
public void realRun() throws InterruptedException { |
671 |
> |
sync.acquire(1); |
672 |
> |
threadAssertFalse(sync.hasWaiters(c)); |
673 |
> |
threadAssertEquals(0, sync.getWaitQueueLength(c)); |
674 |
> |
c.await(); |
675 |
> |
sync.release(1); |
676 |
> |
}}); |
677 |
> |
|
678 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
679 |
> |
public void realRun() throws InterruptedException { |
680 |
> |
sync.acquire(1); |
681 |
> |
threadAssertTrue(sync.hasWaiters(c)); |
682 |
> |
threadAssertEquals(1, sync.getWaitQueueLength(c)); |
683 |
> |
c.await(); |
684 |
> |
sync.release(1); |
685 |
> |
}}); |
686 |
> |
|
687 |
> |
t1.start(); |
688 |
> |
Thread.sleep(SHORT_DELAY_MS); |
689 |
> |
t2.start(); |
690 |
> |
Thread.sleep(SHORT_DELAY_MS); |
691 |
> |
sync.acquire(1); |
692 |
> |
assertTrue(sync.hasWaiters(c)); |
693 |
> |
assertEquals(2, sync.getWaitQueueLength(c)); |
694 |
> |
c.signalAll(); |
695 |
> |
sync.release(1); |
696 |
> |
Thread.sleep(SHORT_DELAY_MS); |
697 |
> |
sync.acquire(1); |
698 |
> |
assertFalse(sync.hasWaiters(c)); |
699 |
> |
assertEquals(0, sync.getWaitQueueLength(c)); |
700 |
> |
sync.release(1); |
701 |
> |
t1.join(SHORT_DELAY_MS); |
702 |
> |
t2.join(SHORT_DELAY_MS); |
703 |
> |
assertFalse(t1.isAlive()); |
704 |
> |
assertFalse(t2.isAlive()); |
705 |
> |
} |
706 |
> |
|
707 |
> |
/** |
708 |
> |
* getWaitingThreads returns only and all waiting threads |
709 |
> |
*/ |
710 |
> |
public void testGetWaitingThreads() throws InterruptedException { |
711 |
> |
final Mutex sync = new Mutex(); |
712 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
713 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
714 |
> |
public void realRun() throws InterruptedException { |
715 |
> |
sync.acquire(1); |
716 |
> |
threadAssertTrue(sync.getWaitingThreads(c).isEmpty()); |
717 |
> |
c.await(); |
718 |
> |
sync.release(1); |
719 |
> |
}}); |
720 |
> |
|
721 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
722 |
> |
public void realRun() throws InterruptedException { |
723 |
> |
sync.acquire(1); |
724 |
> |
threadAssertFalse(sync.getWaitingThreads(c).isEmpty()); |
725 |
> |
c.await(); |
726 |
> |
sync.release(1); |
727 |
> |
}}); |
728 |
> |
|
729 |
> |
sync.acquire(1); |
730 |
> |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
731 |
> |
sync.release(1); |
732 |
> |
t1.start(); |
733 |
> |
Thread.sleep(SHORT_DELAY_MS); |
734 |
> |
t2.start(); |
735 |
> |
Thread.sleep(SHORT_DELAY_MS); |
736 |
> |
sync.acquire(1); |
737 |
> |
assertTrue(sync.hasWaiters(c)); |
738 |
> |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
739 |
> |
assertTrue(sync.getWaitingThreads(c).contains(t2)); |
740 |
> |
c.signalAll(); |
741 |
> |
sync.release(1); |
742 |
> |
Thread.sleep(SHORT_DELAY_MS); |
743 |
> |
sync.acquire(1); |
744 |
> |
assertFalse(sync.hasWaiters(c)); |
745 |
> |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
746 |
> |
sync.release(1); |
747 |
> |
t1.join(SHORT_DELAY_MS); |
748 |
> |
t2.join(SHORT_DELAY_MS); |
749 |
> |
assertFalse(t1.isAlive()); |
750 |
> |
assertFalse(t2.isAlive()); |
751 |
> |
} |
752 |
> |
|
753 |
> |
|
754 |
> |
|
755 |
> |
/** |
756 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
757 |
> |
*/ |
758 |
> |
public void testAwaitUninterruptibly() throws InterruptedException { |
759 |
> |
final Mutex sync = new Mutex(); |
760 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
761 |
> |
Thread t = new Thread(new CheckedRunnable() { |
762 |
> |
public void realRun() { |
763 |
> |
sync.acquire(1); |
764 |
> |
c.awaitUninterruptibly(); |
765 |
> |
sync.release(1); |
766 |
> |
}}); |
767 |
> |
|
768 |
> |
t.start(); |
769 |
> |
Thread.sleep(SHORT_DELAY_MS); |
770 |
> |
t.interrupt(); |
771 |
> |
sync.acquire(1); |
772 |
> |
c.signal(); |
773 |
> |
sync.release(1); |
774 |
> |
t.join(SHORT_DELAY_MS); |
775 |
> |
assertFalse(t.isAlive()); |
776 |
> |
} |
777 |
> |
|
778 |
> |
/** |
779 |
> |
* await is interruptible |
780 |
> |
*/ |
781 |
> |
public void testAwait_Interrupt() throws InterruptedException { |
782 |
> |
final Mutex sync = new Mutex(); |
783 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
784 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
785 |
> |
public void realRun() throws InterruptedException { |
786 |
> |
sync.acquire(1); |
787 |
> |
c.await(); |
788 |
> |
sync.release(1); |
789 |
> |
}}); |
790 |
> |
|
791 |
> |
t.start(); |
792 |
> |
Thread.sleep(SHORT_DELAY_MS); |
793 |
> |
t.interrupt(); |
794 |
> |
t.join(SHORT_DELAY_MS); |
795 |
> |
assertFalse(t.isAlive()); |
796 |
> |
} |
797 |
> |
|
798 |
> |
/** |
799 |
> |
* awaitNanos is interruptible |
800 |
> |
*/ |
801 |
> |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
802 |
> |
final Mutex sync = new Mutex(); |
803 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
804 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
805 |
> |
public void realRun() throws InterruptedException { |
806 |
> |
sync.acquire(1); |
807 |
> |
c.awaitNanos(1000 * 1000 * 1000); // 1 sec |
808 |
> |
sync.release(1); |
809 |
> |
}}); |
810 |
> |
|
811 |
> |
t.start(); |
812 |
> |
Thread.sleep(SHORT_DELAY_MS); |
813 |
> |
t.interrupt(); |
814 |
> |
t.join(SHORT_DELAY_MS); |
815 |
> |
assertFalse(t.isAlive()); |
816 |
> |
} |
817 |
> |
|
818 |
> |
/** |
819 |
> |
* awaitUntil is interruptible |
820 |
> |
*/ |
821 |
> |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
822 |
> |
final Mutex sync = new Mutex(); |
823 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
824 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
825 |
> |
public void realRun() throws InterruptedException { |
826 |
> |
sync.acquire(1); |
827 |
> |
java.util.Date d = new java.util.Date(); |
828 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
829 |
> |
sync.release(1); |
830 |
> |
}}); |
831 |
> |
|
832 |
> |
t.start(); |
833 |
> |
Thread.sleep(SHORT_DELAY_MS); |
834 |
> |
t.interrupt(); |
835 |
> |
t.join(SHORT_DELAY_MS); |
836 |
> |
assertFalse(t.isAlive()); |
837 |
> |
} |
838 |
> |
|
839 |
> |
/** |
840 |
> |
* signalAll wakes up all threads |
841 |
> |
*/ |
842 |
> |
public void testSignalAll() throws InterruptedException { |
843 |
> |
final Mutex sync = new Mutex(); |
844 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
845 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
846 |
> |
public void realRun() throws InterruptedException { |
847 |
> |
sync.acquire(1); |
848 |
> |
c.await(); |
849 |
> |
sync.release(1); |
850 |
> |
}}); |
851 |
> |
|
852 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
853 |
> |
public void realRun() throws InterruptedException { |
854 |
> |
sync.acquire(1); |
855 |
> |
c.await(); |
856 |
> |
sync.release(1); |
857 |
> |
}}); |
858 |
> |
|
859 |
> |
t1.start(); |
860 |
> |
t2.start(); |
861 |
> |
Thread.sleep(SHORT_DELAY_MS); |
862 |
> |
sync.acquire(1); |
863 |
> |
c.signalAll(); |
864 |
> |
sync.release(1); |
865 |
> |
t1.join(SHORT_DELAY_MS); |
866 |
> |
t2.join(SHORT_DELAY_MS); |
867 |
> |
assertFalse(t1.isAlive()); |
868 |
> |
assertFalse(t2.isAlive()); |
869 |
> |
} |
870 |
> |
|
871 |
> |
|
872 |
> |
/** |
873 |
> |
* toString indicates current state |
874 |
> |
*/ |
875 |
> |
public void testToString() { |
876 |
> |
Mutex sync = new Mutex(); |
877 |
> |
String us = sync.toString(); |
878 |
> |
assertTrue(us.indexOf("State = 0") >= 0); |
879 |
> |
sync.acquire(1); |
880 |
> |
String ls = sync.toString(); |
881 |
> |
assertTrue(ls.indexOf("State = 1") >= 0); |
882 |
> |
} |
883 |
> |
|
884 |
> |
/** |
885 |
> |
* A serialized AQS deserializes with current state |
886 |
> |
*/ |
887 |
> |
public void testSerialization() throws Exception { |
888 |
> |
Mutex l = new Mutex(); |
889 |
> |
l.acquire(1); |
890 |
> |
assertTrue(l.isHeldExclusively()); |
891 |
> |
|
892 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
893 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
894 |
> |
out.writeObject(l); |
895 |
> |
out.close(); |
896 |
> |
|
897 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
898 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
899 |
> |
Mutex r = (Mutex) in.readObject(); |
900 |
> |
assertTrue(r.isHeldExclusively()); |
901 |
> |
} |
902 |
> |
|
903 |
> |
|
904 |
> |
/** |
905 |
> |
* tryReleaseShared setting state changes getState |
906 |
> |
*/ |
907 |
> |
public void testGetStateWithReleaseShared() { |
908 |
> |
final BooleanLatch l = new BooleanLatch(); |
909 |
> |
assertFalse(l.isSignalled()); |
910 |
> |
l.releaseShared(0); |
911 |
> |
assertTrue(l.isSignalled()); |
912 |
> |
} |
913 |
> |
|
914 |
> |
/** |
915 |
> |
* releaseShared has no effect when already signalled |
916 |
> |
*/ |
917 |
> |
public void testReleaseShared() { |
918 |
> |
final BooleanLatch l = new BooleanLatch(); |
919 |
> |
assertFalse(l.isSignalled()); |
920 |
> |
l.releaseShared(0); |
921 |
> |
assertTrue(l.isSignalled()); |
922 |
> |
l.releaseShared(0); |
923 |
> |
assertTrue(l.isSignalled()); |
924 |
> |
} |
925 |
> |
|
926 |
> |
/** |
927 |
> |
* acquireSharedInterruptibly returns after release, but not before |
928 |
> |
*/ |
929 |
> |
public void testAcquireSharedInterruptibly() throws InterruptedException { |
930 |
> |
final BooleanLatch l = new BooleanLatch(); |
931 |
> |
|
932 |
> |
Thread t = new Thread(new CheckedRunnable() { |
933 |
> |
public void realRun() throws InterruptedException { |
934 |
> |
threadAssertFalse(l.isSignalled()); |
935 |
> |
l.acquireSharedInterruptibly(0); |
936 |
> |
threadAssertTrue(l.isSignalled()); |
937 |
> |
}}); |
938 |
> |
|
939 |
> |
t.start(); |
940 |
> |
assertFalse(l.isSignalled()); |
941 |
> |
Thread.sleep(SHORT_DELAY_MS); |
942 |
> |
l.releaseShared(0); |
943 |
> |
assertTrue(l.isSignalled()); |
944 |
> |
t.join(); |
945 |
> |
} |
946 |
> |
|
947 |
> |
|
948 |
> |
/** |
949 |
> |
* acquireSharedTimed returns after release |
950 |
> |
*/ |
951 |
> |
public void testAsquireSharedTimed() throws InterruptedException { |
952 |
> |
final BooleanLatch l = new BooleanLatch(); |
953 |
> |
|
954 |
> |
Thread t = new Thread(new CheckedRunnable() { |
955 |
> |
public void realRun() throws InterruptedException { |
956 |
> |
threadAssertFalse(l.isSignalled()); |
957 |
> |
threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000)); |
958 |
> |
threadAssertTrue(l.isSignalled()); |
959 |
> |
}}); |
960 |
> |
|
961 |
> |
t.start(); |
962 |
> |
assertFalse(l.isSignalled()); |
963 |
> |
Thread.sleep(SHORT_DELAY_MS); |
964 |
> |
l.releaseShared(0); |
965 |
> |
assertTrue(l.isSignalled()); |
966 |
> |
t.join(); |
967 |
> |
} |
968 |
> |
|
969 |
> |
/** |
970 |
> |
* acquireSharedInterruptibly throws IE if interrupted before released |
971 |
> |
*/ |
972 |
> |
public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException { |
973 |
> |
final BooleanLatch l = new BooleanLatch(); |
974 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
975 |
> |
public void realRun() throws InterruptedException { |
976 |
> |
threadAssertFalse(l.isSignalled()); |
977 |
> |
l.acquireSharedInterruptibly(0); |
978 |
> |
}}); |
979 |
> |
|
980 |
> |
t.start(); |
981 |
> |
assertFalse(l.isSignalled()); |
982 |
> |
t.interrupt(); |
983 |
> |
t.join(); |
984 |
> |
} |
985 |
> |
|
986 |
> |
/** |
987 |
> |
* acquireSharedTimed throws IE if interrupted before released |
988 |
> |
*/ |
989 |
> |
public void testAcquireSharedNanos_InterruptedException() throws InterruptedException { |
990 |
> |
final BooleanLatch l = new BooleanLatch(); |
991 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
992 |
> |
public void realRun() throws InterruptedException { |
993 |
> |
threadAssertFalse(l.isSignalled()); |
994 |
> |
l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000); |
995 |
> |
}}); |
996 |
> |
|
997 |
> |
t.start(); |
998 |
> |
Thread.sleep(SHORT_DELAY_MS); |
999 |
> |
assertFalse(l.isSignalled()); |
1000 |
> |
t.interrupt(); |
1001 |
> |
t.join(); |
1002 |
> |
} |
1003 |
> |
|
1004 |
> |
/** |
1005 |
> |
* acquireSharedTimed times out if not released before timeout |
1006 |
> |
*/ |
1007 |
> |
public void testAcquireSharedNanos_Timeout() throws InterruptedException { |
1008 |
> |
final BooleanLatch l = new BooleanLatch(); |
1009 |
> |
Thread t = new Thread(new CheckedRunnable() { |
1010 |
> |
public void realRun() throws InterruptedException { |
1011 |
> |
threadAssertFalse(l.isSignalled()); |
1012 |
> |
threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000)); |
1013 |
> |
}}); |
1014 |
> |
|
1015 |
> |
t.start(); |
1016 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1017 |
> |
assertFalse(l.isSignalled()); |
1018 |
> |
t.join(); |
1019 |
> |
} |
1020 |
> |
|
1021 |
|
} |