37 |
|
} |
38 |
|
|
39 |
|
/** |
40 |
< |
* A SynchronousQueue is both empty and full |
40 |
> |
* Any SynchronousQueue is both empty and full |
41 |
|
*/ |
42 |
< |
public void testEmptyFull() { |
43 |
< |
SynchronousQueue q = new SynchronousQueue(); |
42 |
> |
public void testEmptyFull(SynchronousQueue q) { |
43 |
|
assertTrue(q.isEmpty()); |
44 |
|
assertEquals(0, q.size()); |
45 |
|
assertEquals(0, q.remainingCapacity()); |
47 |
|
} |
48 |
|
|
49 |
|
/** |
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 |
< |
SynchronousQueue q = new SynchronousQueue(true); |
55 |
< |
assertTrue(q.isEmpty()); |
56 |
< |
assertEquals(0, q.size()); |
57 |
< |
assertEquals(0, q.remainingCapacity()); |
58 |
< |
assertFalse(q.offer(zero)); |
60 |
> |
testEmptyFull(new SynchronousQueue(true)); |
61 |
|
} |
62 |
|
|
63 |
|
/** |
206 |
|
/** |
207 |
|
* timed offer times out if elements not taken |
208 |
|
*/ |
209 |
< |
public void testTimedOffer() throws InterruptedException { |
210 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
211 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
209 |
> |
public void testTimedOffer(final SynchronousQueue q) |
210 |
> |
throws InterruptedException { |
211 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
212 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
213 |
|
public void realRun() throws InterruptedException { |
214 |
+ |
long t0 = System.nanoTime(); |
215 |
|
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
216 |
< |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
216 |
> |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
217 |
> |
pleaseInterrupt.countDown(); |
218 |
> |
t0 = System.nanoTime(); |
219 |
> |
try { |
220 |
> |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
221 |
> |
shouldThrow(); |
222 |
> |
} catch (InterruptedException success) {} |
223 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
224 |
|
}}); |
225 |
|
|
226 |
< |
t.start(); |
216 |
< |
Thread.sleep(SMALL_DELAY_MS); |
226 |
> |
assertTrue(pleaseInterrupt.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
227 |
|
t.interrupt(); |
228 |
< |
t.join(); |
228 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
229 |
|
} |
230 |
|
|
221 |
– |
|
231 |
|
/** |
232 |
< |
* take blocks interruptibly when empty |
232 |
> |
* timed offer times out if elements not taken |
233 |
|
*/ |
234 |
< |
public void testTakeFromEmpty() throws InterruptedException { |
235 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
227 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
228 |
< |
public void realRun() throws InterruptedException { |
229 |
< |
q.take(); |
230 |
< |
}}); |
231 |
< |
|
232 |
< |
t.start(); |
233 |
< |
Thread.sleep(SHORT_DELAY_MS); |
234 |
< |
t.interrupt(); |
235 |
< |
t.join(); |
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 |
285 |
|
} |
286 |
|
|
287 |
|
/** |
282 |
– |
* timed offer times out if elements not taken |
283 |
– |
*/ |
284 |
– |
public void testFairTimedOffer() throws InterruptedException { |
285 |
– |
final SynchronousQueue q = new SynchronousQueue(true); |
286 |
– |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
287 |
– |
public void realRun() throws InterruptedException { |
288 |
– |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
289 |
– |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
290 |
– |
}}); |
291 |
– |
|
292 |
– |
t.start(); |
293 |
– |
Thread.sleep(SMALL_DELAY_MS); |
294 |
– |
t.interrupt(); |
295 |
– |
t.join(); |
296 |
– |
} |
297 |
– |
|
298 |
– |
|
299 |
– |
/** |
288 |
|
* take blocks interruptibly when empty |
289 |
|
*/ |
290 |
|
public void testFairTakeFromEmpty() throws InterruptedException { |
301 |
|
} |
302 |
|
|
303 |
|
/** |
304 |
< |
* poll fails unless active taker |
304 |
> |
* poll return null if no active putter |
305 |
|
*/ |
306 |
|
public void testPoll() { |
307 |
|
SynchronousQueue q = new SynchronousQueue(); |
309 |
|
} |
310 |
|
|
311 |
|
/** |
312 |
< |
* timed pool with zero timeout times out if no active taker |
312 |
> |
* timed poll with zero timeout times out if no active putter |
313 |
|
*/ |
314 |
|
public void testTimedPoll0() throws InterruptedException { |
315 |
|
SynchronousQueue q = new SynchronousQueue(); |
317 |
|
} |
318 |
|
|
319 |
|
/** |
320 |
< |
* timed pool with nonzero timeout times out if no active taker |
320 |
> |
* timed poll with nonzero timeout times out if no active putter |
321 |
|
*/ |
322 |
|
public void testTimedPoll() throws InterruptedException { |
323 |
|
SynchronousQueue q = new SynchronousQueue(); |
324 |
+ |
long t0 = System.nanoTime(); |
325 |
|
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
326 |
+ |
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() throws InterruptedException { |
334 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
335 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
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 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
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 |
< |
t.start(); |
348 |
> |
threadStarted.await(); |
349 |
|
Thread.sleep(SHORT_DELAY_MS); |
350 |
|
t.interrupt(); |
351 |
< |
t.join(); |
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 testFairInterruptedTimedPoll() throws InterruptedException { |
359 |
< |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
360 |
< |
public void realRun() throws InterruptedException { |
363 |
< |
SynchronousQueue q = new SynchronousQueue(true); |
364 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
365 |
< |
}}); |
358 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
359 |
> |
testInterruptedTimedPoll(new SynchronousQueue()); |
360 |
> |
} |
361 |
|
|
362 |
< |
t.start(); |
363 |
< |
Thread.sleep(SHORT_DELAY_MS); |
364 |
< |
t.interrupt(); |
365 |
< |
t.join(); |
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)); |
368 |
|
} |
369 |
|
|
370 |
|
/** |
371 |
< |
* timed poll before a delayed offer fails; after offer succeeds; |
372 |
< |
* on interruption throws |
371 |
> |
* timed poll before a delayed offer times out, returning null; |
372 |
> |
* after offer succeeds; on interruption throws |
373 |
|
*/ |
374 |
|
public void testFairTimedPollWithOffer() throws InterruptedException { |
375 |
|
final SynchronousQueue q = new SynchronousQueue(true); |
376 |
< |
Thread t = new Thread(new CheckedRunnable() { |
376 |
> |
final CountDownLatch pleaseOffer = new CountDownLatch(1); |
377 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
378 |
|
public void realRun() throws InterruptedException { |
379 |
+ |
long t0 = System.nanoTime(); |
380 |
+ |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
381 |
+ |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
382 |
+ |
|
383 |
+ |
pleaseOffer.countDown(); |
384 |
+ |
t0 = System.nanoTime(); |
385 |
+ |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
386 |
+ |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
387 |
+ |
|
388 |
+ |
t0 = System.nanoTime(); |
389 |
|
try { |
382 |
– |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
383 |
– |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
390 |
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
391 |
< |
threadShouldThrow(); |
391 |
> |
shouldThrow(); |
392 |
|
} catch (InterruptedException success) {} |
393 |
+ |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
394 |
|
}}); |
395 |
|
|
396 |
< |
t.start(); |
397 |
< |
Thread.sleep(SMALL_DELAY_MS); |
398 |
< |
assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS)); |
396 |
> |
assertTrue(pleaseOffer.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
397 |
> |
long t0 = System.nanoTime(); |
398 |
> |
assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); |
399 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
400 |
> |
|
401 |
|
t.interrupt(); |
402 |
< |
t.join(); |
402 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
403 |
|
} |
404 |
|
|
396 |
– |
|
405 |
|
/** |
406 |
< |
* peek returns null |
406 |
> |
* peek() returns null if no active putter |
407 |
|
*/ |
408 |
|
public void testPeek() { |
409 |
|
SynchronousQueue q = new SynchronousQueue(); |
411 |
|
} |
412 |
|
|
413 |
|
/** |
414 |
< |
* element throws NSEE |
414 |
> |
* element() throws NSEE if no active putter |
415 |
|
*/ |
416 |
|
public void testElement() { |
417 |
|
SynchronousQueue q = new SynchronousQueue(); |
422 |
|
} |
423 |
|
|
424 |
|
/** |
425 |
< |
* remove throws NSEE if no active taker |
425 |
> |
* remove() throws NSEE if no active putter |
426 |
|
*/ |
427 |
|
public void testRemove() { |
428 |
|
SynchronousQueue q = new SynchronousQueue(); |