1 |
|
/* |
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 |
4 |
> |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
|
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
* Pat Fisher, Mike Judd. |
7 |
|
*/ |
39 |
|
/** |
40 |
|
* Any SynchronousQueue is both empty and full |
41 |
|
*/ |
42 |
< |
public void testEmptyFull(SynchronousQueue q) { |
42 |
> |
public void testEmptyFull() { testEmptyFull(false); } |
43 |
> |
public void testEmptyFull_fair() { testEmptyFull(true); } |
44 |
> |
public void testEmptyFull(boolean fair) { |
45 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
46 |
|
assertTrue(q.isEmpty()); |
47 |
|
assertEquals(0, q.size()); |
48 |
|
assertEquals(0, q.remainingCapacity()); |
50 |
|
} |
51 |
|
|
52 |
|
/** |
50 |
– |
* A non-fair SynchronousQueue is both empty and full |
51 |
– |
*/ |
52 |
– |
public void testEmptyFull() { |
53 |
– |
testEmptyFull(new SynchronousQueue()); |
54 |
– |
} |
55 |
– |
|
56 |
– |
/** |
57 |
– |
* A fair SynchronousQueue is both empty and full |
58 |
– |
*/ |
59 |
– |
public void testFairEmptyFull() { |
60 |
– |
testEmptyFull(new SynchronousQueue(true)); |
61 |
– |
} |
62 |
– |
|
63 |
– |
/** |
53 |
|
* offer(null) throws NPE |
54 |
|
*/ |
55 |
|
public void testOfferNull() { |
148 |
|
q.put(null); |
149 |
|
shouldThrow(); |
150 |
|
} catch (NullPointerException success) {} |
151 |
< |
} |
151 |
> |
} |
152 |
|
|
153 |
|
/** |
154 |
|
* put blocks interruptibly if no active taker |
155 |
|
*/ |
156 |
< |
public void testBlockingPut() throws InterruptedException { |
157 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
156 |
> |
public void testBlockingPut() { testBlockingPut(false); } |
157 |
> |
public void testBlockingPut_fair() { testBlockingPut(true); } |
158 |
> |
public void testBlockingPut(boolean fair) { |
159 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
160 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
161 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
162 |
|
public void realRun() throws InterruptedException { |
163 |
< |
SynchronousQueue q = new SynchronousQueue(); |
164 |
< |
q.put(zero); |
165 |
< |
}}); |
166 |
< |
|
167 |
< |
t.start(); |
168 |
< |
Thread.sleep(SHORT_DELAY_MS); |
176 |
< |
t.interrupt(); |
177 |
< |
t.join(); |
178 |
< |
} |
163 |
> |
Thread.currentThread().interrupt(); |
164 |
> |
try { |
165 |
> |
q.put(99); |
166 |
> |
shouldThrow(); |
167 |
> |
} catch (InterruptedException success) {} |
168 |
> |
assertFalse(Thread.interrupted()); |
169 |
|
|
170 |
< |
/** |
181 |
< |
* put blocks waiting for take |
182 |
< |
*/ |
183 |
< |
public void testPutWithTake() throws InterruptedException { |
184 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
185 |
< |
Thread t = new Thread(new CheckedRunnable() { |
186 |
< |
public void realRun() throws InterruptedException { |
187 |
< |
int added = 0; |
170 |
> |
pleaseInterrupt.countDown(); |
171 |
|
try { |
172 |
< |
while (true) { |
173 |
< |
q.put(added); |
174 |
< |
++added; |
175 |
< |
} |
193 |
< |
} catch (InterruptedException success) { |
194 |
< |
assertEquals(1, added); |
195 |
< |
} |
172 |
> |
q.put(99); |
173 |
> |
shouldThrow(); |
174 |
> |
} catch (InterruptedException success) {} |
175 |
> |
assertFalse(Thread.interrupted()); |
176 |
|
}}); |
177 |
|
|
178 |
< |
t.start(); |
179 |
< |
Thread.sleep(SHORT_DELAY_MS); |
200 |
< |
assertEquals(0, q.take()); |
201 |
< |
Thread.sleep(SHORT_DELAY_MS); |
178 |
> |
await(pleaseInterrupt); |
179 |
> |
assertThreadStaysAlive(t); |
180 |
|
t.interrupt(); |
181 |
< |
t.join(); |
181 |
> |
awaitTermination(t); |
182 |
> |
assertEquals(0, q.remainingCapacity()); |
183 |
|
} |
184 |
|
|
185 |
|
/** |
186 |
< |
* timed offer times out if elements not taken |
186 |
> |
* put blocks interruptibly waiting for take |
187 |
|
*/ |
188 |
< |
public void testTimedOffer(final SynchronousQueue q) |
189 |
< |
throws InterruptedException { |
188 |
> |
public void testPutWithTake() { testPutWithTake(false); } |
189 |
> |
public void testPutWithTake_fair() { testPutWithTake(true); } |
190 |
> |
public void testPutWithTake(boolean fair) { |
191 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
192 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
193 |
|
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
194 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
195 |
|
public void realRun() throws InterruptedException { |
196 |
< |
long t0 = System.nanoTime(); |
197 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
198 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
196 |
> |
pleaseTake.countDown(); |
197 |
> |
q.put(one); |
198 |
> |
|
199 |
|
pleaseInterrupt.countDown(); |
218 |
– |
t0 = System.nanoTime(); |
200 |
|
try { |
201 |
< |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
201 |
> |
q.put(99); |
202 |
|
shouldThrow(); |
203 |
|
} catch (InterruptedException success) {} |
204 |
< |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
204 |
> |
assertFalse(Thread.interrupted()); |
205 |
|
}}); |
206 |
|
|
207 |
< |
assertTrue(pleaseInterrupt.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
208 |
< |
t.interrupt(); |
209 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
210 |
< |
} |
230 |
< |
|
231 |
< |
/** |
232 |
< |
* timed offer times out if elements not taken |
233 |
< |
*/ |
234 |
< |
public void testTimedOffer() throws InterruptedException { |
235 |
< |
testTimedOffer(new SynchronousQueue()); |
236 |
< |
} |
237 |
< |
|
238 |
< |
/** |
239 |
< |
* timed offer times out if elements not taken |
240 |
< |
*/ |
241 |
< |
public void testFairTimedOffer() throws InterruptedException { |
242 |
< |
testTimedOffer(new SynchronousQueue(true)); |
243 |
< |
} |
244 |
< |
|
245 |
< |
/** |
246 |
< |
* put blocks interruptibly if no active taker |
247 |
< |
*/ |
248 |
< |
public void testFairBlockingPut() throws InterruptedException { |
249 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
250 |
< |
public void realRun() throws InterruptedException { |
251 |
< |
SynchronousQueue q = new SynchronousQueue(true); |
252 |
< |
q.put(zero); |
253 |
< |
}}); |
207 |
> |
await(pleaseTake); |
208 |
> |
assertEquals(q.remainingCapacity(), 0); |
209 |
> |
try { assertSame(one, q.take()); } |
210 |
> |
catch (InterruptedException e) { threadUnexpectedException(e); } |
211 |
|
|
212 |
< |
t.start(); |
213 |
< |
Thread.sleep(SHORT_DELAY_MS); |
212 |
> |
await(pleaseInterrupt); |
213 |
> |
assertThreadStaysAlive(t); |
214 |
|
t.interrupt(); |
215 |
< |
t.join(); |
215 |
> |
awaitTermination(t); |
216 |
> |
assertEquals(q.remainingCapacity(), 0); |
217 |
|
} |
218 |
|
|
219 |
|
/** |
220 |
< |
* put blocks waiting for take |
220 |
> |
* timed offer times out if elements not taken |
221 |
|
*/ |
222 |
< |
public void testFairPutWithTake() throws InterruptedException { |
223 |
< |
final SynchronousQueue q = new SynchronousQueue(true); |
224 |
< |
Thread t = new Thread(new CheckedRunnable() { |
222 |
> |
public void testTimedOffer() { testTimedOffer(false); } |
223 |
> |
public void testTimedOffer_fair() { testTimedOffer(true); } |
224 |
> |
public void testTimedOffer(boolean fair) { |
225 |
> |
final SynchronousQueue q = new SynchronousQueue(fair); |
226 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
227 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
228 |
|
public void realRun() throws InterruptedException { |
229 |
< |
int added = 0; |
229 |
> |
long startTime = System.nanoTime(); |
230 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
231 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
232 |
> |
pleaseInterrupt.countDown(); |
233 |
|
try { |
234 |
< |
while (true) { |
235 |
< |
q.put(added); |
236 |
< |
++added; |
273 |
< |
} |
274 |
< |
} catch (InterruptedException success) { |
275 |
< |
assertEquals(1, added); |
276 |
< |
} |
277 |
< |
}}); |
278 |
< |
|
279 |
< |
t.start(); |
280 |
< |
Thread.sleep(SHORT_DELAY_MS); |
281 |
< |
assertEquals(0, q.take()); |
282 |
< |
Thread.sleep(SHORT_DELAY_MS); |
283 |
< |
t.interrupt(); |
284 |
< |
t.join(); |
285 |
< |
} |
286 |
< |
|
287 |
< |
/** |
288 |
< |
* take blocks interruptibly when empty |
289 |
< |
*/ |
290 |
< |
public void testFairTakeFromEmpty() throws InterruptedException { |
291 |
< |
final SynchronousQueue q = new SynchronousQueue(true); |
292 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
293 |
< |
public void realRun() throws InterruptedException { |
294 |
< |
q.take(); |
234 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
235 |
> |
shouldThrow(); |
236 |
> |
} catch (InterruptedException success) {} |
237 |
|
}}); |
238 |
|
|
239 |
< |
t.start(); |
240 |
< |
Thread.sleep(SHORT_DELAY_MS); |
239 |
> |
await(pleaseInterrupt); |
240 |
> |
assertThreadStaysAlive(t); |
241 |
|
t.interrupt(); |
242 |
< |
t.join(); |
242 |
> |
awaitTermination(t); |
243 |
|
} |
244 |
|
|
245 |
|
/** |
263 |
|
*/ |
264 |
|
public void testTimedPoll() throws InterruptedException { |
265 |
|
SynchronousQueue q = new SynchronousQueue(); |
266 |
< |
long t0 = System.nanoTime(); |
267 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
268 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
327 |
< |
} |
328 |
< |
|
329 |
< |
/** |
330 |
< |
* Interrupted timed poll throws InterruptedException instead of |
331 |
< |
* returning timeout status |
332 |
< |
*/ |
333 |
< |
public void testInterruptedTimedPoll(final SynchronousQueue q) |
334 |
< |
throws InterruptedException { |
335 |
< |
final CountDownLatch threadStarted = new CountDownLatch(1); |
336 |
< |
Thread t = newStartedThread(new CheckedRunnable() { |
337 |
< |
public void realRun() throws InterruptedException { |
338 |
< |
long t0 = System.nanoTime(); |
339 |
< |
threadStarted.countDown(); |
340 |
< |
try { |
341 |
< |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
342 |
< |
shouldThrow(); |
343 |
< |
} catch (InterruptedException success) {} |
344 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
345 |
< |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
346 |
< |
}}); |
347 |
< |
|
348 |
< |
threadStarted.await(); |
349 |
< |
Thread.sleep(SHORT_DELAY_MS); |
350 |
< |
t.interrupt(); |
351 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
352 |
< |
} |
353 |
< |
|
354 |
< |
/** |
355 |
< |
* Interrupted timed poll throws InterruptedException instead of |
356 |
< |
* returning timeout status |
357 |
< |
*/ |
358 |
< |
public void testInterruptedTimedPoll() throws InterruptedException { |
359 |
< |
testInterruptedTimedPoll(new SynchronousQueue()); |
360 |
< |
} |
361 |
< |
|
362 |
< |
/** |
363 |
< |
* Interrupted timed poll throws InterruptedException instead of |
364 |
< |
* returning timeout status |
365 |
< |
*/ |
366 |
< |
public void testFairInterruptedTimedPoll() throws InterruptedException { |
367 |
< |
testInterruptedTimedPoll(new SynchronousQueue(true)); |
266 |
> |
long startTime = System.nanoTime(); |
267 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
268 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
269 |
|
} |
270 |
|
|
271 |
|
/** |
298 |
|
long t0 = System.nanoTime(); |
299 |
|
assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); |
300 |
|
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
301 |
< |
|
301 |
> |
|
302 |
|
t.interrupt(); |
303 |
|
awaitTermination(t, MEDIUM_DELAY_MS); |
304 |
|
} |
392 |
|
assertFalse(q.containsAll(Arrays.asList(ints))); |
393 |
|
} |
394 |
|
|
494 |
– |
|
395 |
|
/** |
396 |
|
* toArray is empty |
397 |
|
*/ |
421 |
|
} catch (NullPointerException success) {} |
422 |
|
} |
423 |
|
|
524 |
– |
|
424 |
|
/** |
425 |
|
* iterator does not traverse any elements |
426 |
|
*/ |
455 |
|
assertNotNull(s); |
456 |
|
} |
457 |
|
|
559 |
– |
|
458 |
|
/** |
459 |
|
* offer transfers elements across Executor tasks |
460 |
|
*/ |
461 |
|
public void testOfferInExecutor() { |
462 |
|
final SynchronousQueue q = new SynchronousQueue(); |
463 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
464 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
465 |
|
|
466 |
|
executor.execute(new CheckedRunnable() { |
467 |
|
public void realRun() throws InterruptedException { |
468 |
|
assertFalse(q.offer(one)); |
469 |
< |
assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS)); |
469 |
> |
threadsStarted.await(); |
470 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
471 |
|
assertEquals(0, q.remainingCapacity()); |
472 |
|
}}); |
473 |
|
|
474 |
|
executor.execute(new CheckedRunnable() { |
475 |
|
public void realRun() throws InterruptedException { |
476 |
< |
Thread.sleep(SMALL_DELAY_MS); |
476 |
> |
threadsStarted.await(); |
477 |
|
assertSame(one, q.take()); |
478 |
|
}}); |
479 |
|
|
481 |
|
} |
482 |
|
|
483 |
|
/** |
484 |
< |
* poll retrieves elements across Executor threads |
484 |
> |
* timed poll retrieves elements across Executor threads |
485 |
|
*/ |
486 |
|
public void testPollInExecutor() { |
487 |
|
final SynchronousQueue q = new SynchronousQueue(); |
488 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
489 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
490 |
|
executor.execute(new CheckedRunnable() { |
491 |
|
public void realRun() throws InterruptedException { |
492 |
|
assertNull(q.poll()); |
493 |
< |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
493 |
> |
threadsStarted.await(); |
494 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
495 |
|
assertTrue(q.isEmpty()); |
496 |
|
}}); |
497 |
|
|
498 |
|
executor.execute(new CheckedRunnable() { |
499 |
|
public void realRun() throws InterruptedException { |
500 |
< |
Thread.sleep(SHORT_DELAY_MS); |
500 |
> |
threadsStarted.await(); |
501 |
|
q.put(one); |
502 |
|
}}); |
503 |
|
|
560 |
|
*/ |
561 |
|
public void testDrainToWithActivePut() throws InterruptedException { |
562 |
|
final SynchronousQueue q = new SynchronousQueue(); |
563 |
< |
Thread t = new Thread(new CheckedRunnable() { |
563 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
564 |
|
public void realRun() throws InterruptedException { |
565 |
< |
q.put(new Integer(1)); |
565 |
> |
q.put(one); |
566 |
|
}}); |
567 |
|
|
666 |
– |
t.start(); |
568 |
|
ArrayList l = new ArrayList(); |
569 |
< |
Thread.sleep(SHORT_DELAY_MS); |
570 |
< |
q.drainTo(l); |
571 |
< |
assertTrue(l.size() <= 1); |
572 |
< |
if (l.size() > 0) |
573 |
< |
assertEquals(l.get(0), new Integer(1)); |
574 |
< |
t.join(); |
575 |
< |
assertTrue(l.size() <= 1); |
569 |
> |
long startTime = System.nanoTime(); |
570 |
> |
while (l.isEmpty()) { |
571 |
> |
q.drainTo(l); |
572 |
> |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
573 |
> |
fail("timed out"); |
574 |
> |
Thread.yield(); |
575 |
> |
} |
576 |
> |
assertTrue(l.size() == 1); |
577 |
> |
assertSame(one, l.get(0)); |
578 |
> |
awaitTermination(t); |
579 |
|
} |
580 |
|
|
581 |
|
/** |
605 |
|
*/ |
606 |
|
public void testDrainToN() throws InterruptedException { |
607 |
|
final SynchronousQueue q = new SynchronousQueue(); |
608 |
< |
Thread t1 = new Thread(new CheckedRunnable() { |
608 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
609 |
|
public void realRun() throws InterruptedException { |
610 |
|
q.put(one); |
611 |
|
}}); |
612 |
|
|
613 |
< |
Thread t2 = new Thread(new CheckedRunnable() { |
613 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
614 |
|
public void realRun() throws InterruptedException { |
615 |
|
q.put(two); |
616 |
|
}}); |
617 |
|
|
714 |
– |
t1.start(); |
715 |
– |
t2.start(); |
618 |
|
ArrayList l = new ArrayList(); |
619 |
< |
Thread.sleep(SHORT_DELAY_MS); |
619 |
> |
delay(SHORT_DELAY_MS); |
620 |
|
q.drainTo(l, 1); |
621 |
|
assertEquals(1, l.size()); |
622 |
|
q.drainTo(l, 1); |
623 |
|
assertEquals(2, l.size()); |
624 |
|
assertTrue(l.contains(one)); |
625 |
|
assertTrue(l.contains(two)); |
626 |
< |
t1.join(); |
627 |
< |
t2.join(); |
626 |
> |
awaitTermination(t1); |
627 |
> |
awaitTermination(t2); |
628 |
|
} |
629 |
|
|
630 |
|
} |