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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
43 |
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try { |
44 |
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new Phaser(-1); |
45 |
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shouldThrow(); |
46 |
< |
} catch (IllegalArgumentException success) { |
45 |
< |
} |
46 |
> |
} catch (IllegalArgumentException success) {} |
47 |
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} |
48 |
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|
49 |
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/** |
63 |
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try { |
64 |
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new Phaser(new Phaser(), -1); |
65 |
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shouldThrow(); |
66 |
< |
} catch (IllegalArgumentException success) { |
66 |
< |
} |
66 |
> |
} catch (IllegalArgumentException success) {} |
67 |
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} |
68 |
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|
69 |
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/** |
100 |
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try { |
101 |
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phaser.register(); |
102 |
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shouldThrow(); |
103 |
< |
} catch (IllegalStateException success) { |
104 |
< |
} |
103 |
> |
} catch (IllegalStateException success) {} |
104 |
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} |
105 |
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|
106 |
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/** |
140 |
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try { |
141 |
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new Phaser().bulkRegister(-1); |
142 |
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shouldThrow(); |
143 |
< |
} catch (IllegalArgumentException success) { |
145 |
< |
} |
143 |
> |
} catch (IllegalArgumentException success) {} |
144 |
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} |
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|
146 |
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/** |
161 |
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try { |
162 |
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new Phaser().bulkRegister(1 << 16); |
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shouldThrow(); |
164 |
< |
} catch (IllegalStateException success) { |
167 |
< |
} |
164 |
> |
} catch (IllegalStateException success) {} |
165 |
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} |
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|
167 |
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/** |
178 |
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} |
179 |
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|
180 |
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/** |
181 |
< |
* Arrive() on a registered phaser increments phase. |
181 |
> |
* Arrive() on a registered phaser increments phase. |
182 |
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*/ |
183 |
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public void testArrive1() { |
184 |
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Phaser phaser = new Phaser(1); |
187 |
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} |
188 |
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|
189 |
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/** |
190 |
< |
* arrive does not wait for others to arrive at barrier |
190 |
> |
* arriveAndDeregister does not wait for others to arrive at barrier |
191 |
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*/ |
192 |
< |
public void testArrive2() { |
192 |
> |
public void testArrive2() throws InterruptedException { |
193 |
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final Phaser phaser = new Phaser(1); |
194 |
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phaser.register(); |
195 |
< |
Thread thread = null; |
196 |
< |
for (final Runnable r : getRunnables(10, SHORT_DELAY_MS)) { |
195 |
> |
List<Thread> threads = new ArrayList<Thread>(); |
196 |
> |
for (int i = 0; i < 10; i++) |
197 |
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phaser.register(); |
198 |
< |
thread = new Thread(new CheckedRunnable() { |
199 |
< |
void realRun() { |
200 |
< |
r.run(); |
198 |
> |
threads.add(newStartedThread(new CheckedRunnable() { |
199 |
> |
public void realRun() throws InterruptedException { |
200 |
> |
Thread.sleep(SMALL_DELAY_MS); |
201 |
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phaser.arriveAndDeregister(); |
202 |
< |
}}); |
206 |
< |
thread.start(); |
207 |
< |
} |
202 |
> |
}})); |
203 |
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|
204 |
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phaser.arrive(); |
205 |
< |
assertTrue(thread.isAlive()); |
205 |
> |
assertTrue(threads.get(0).isAlive()); |
206 |
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assertFalse(phaser.isTerminated()); |
207 |
+ |
for (Thread thread : threads) |
208 |
+ |
thread.join(); |
209 |
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} |
210 |
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|
211 |
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/** |
215 |
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Phaser phaser = new Phaser(1); |
216 |
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phaser.forceTermination(); |
217 |
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assertTrue(phaser.arrive() < 0); |
221 |
– |
|
218 |
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} |
219 |
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|
220 |
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/** |
226 |
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Phaser phaser = new Phaser(); |
227 |
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phaser.arriveAndDeregister(); |
228 |
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shouldThrow(); |
229 |
< |
} catch (IllegalStateException success) { |
234 |
< |
} |
229 |
> |
} catch (IllegalStateException success) {} |
230 |
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} |
231 |
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|
232 |
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/** |
237 |
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phaser.register(); |
238 |
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phaser.arrive(); |
239 |
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int p = phaser.getArrivedParties(); |
240 |
< |
assertTrue(p == 1); |
240 |
> |
assertEquals(1, p); |
241 |
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phaser.arriveAndDeregister(); |
242 |
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assertTrue(phaser.getArrivedParties() < p); |
243 |
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} |
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assertTrue(parent.getUnarrivedParties() > 0); |
255 |
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assertTrue(root.getUnarrivedParties() > 0); |
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root.arriveAndDeregister(); |
257 |
< |
assertTrue(parent.getUnarrivedParties() == 0); |
258 |
< |
assertTrue(root.getUnarrivedParties() == 0); |
257 |
> |
assertEquals(0, parent.getUnarrivedParties()); |
258 |
> |
assertEquals(0, root.getUnarrivedParties()); |
259 |
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assertTrue(root.isTerminated() && parent.isTerminated()); |
260 |
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} |
261 |
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|
285 |
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assertTrue(child.getUnarrivedParties() > 0); |
286 |
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root.register(); |
287 |
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root.arriveAndDeregister(); |
288 |
< |
assertTrue(parent.getUnarrivedParties() == 0); |
289 |
< |
assertTrue(child.getUnarrivedParties() == 0); |
288 |
> |
assertEquals(0, parent.getUnarrivedParties()); |
289 |
> |
assertEquals(0, child.getUnarrivedParties()); |
290 |
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assertTrue(root.isTerminated()); |
291 |
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} |
292 |
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|
294 |
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* arriveAndDeregister returns the phase in which it leaves the |
295 |
|
* phaser in after deregistration |
296 |
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*/ |
297 |
< |
public void testArriveAndDeregister6() { |
297 |
> |
public void testArriveAndDeregister6() throws InterruptedException { |
298 |
|
final Phaser phaser = new Phaser(2); |
299 |
< |
new Thread(new CheckedRunnable() { |
300 |
< |
void realRun() { |
301 |
< |
getRunnable(SHORT_DELAY_MS).run(); |
299 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
300 |
> |
public void realRun() { |
301 |
> |
sleepTillInterrupted(SHORT_DELAY_MS); |
302 |
|
phaser.arrive(); |
303 |
< |
}}).start(); |
303 |
> |
}}); |
304 |
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phaser.arriveAndAwaitAdvance(); |
305 |
|
int phase = phaser.arriveAndDeregister(); |
306 |
|
assertEquals(phase, phaser.getPhase()); |
307 |
+ |
t.join(); |
308 |
|
} |
309 |
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|
310 |
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/** |
329 |
|
*/ |
330 |
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public void testAwaitAdvance3() throws InterruptedException { |
331 |
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final Phaser phaser = new Phaser(); |
332 |
+ |
phaser.register(); |
333 |
+ |
final CountDownLatch threadStarted = new CountDownLatch(1); |
334 |
|
|
335 |
< |
Thread th1 = new Thread(new CheckedRunnable() { |
336 |
< |
void realRun() throws InterruptedException { |
335 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
336 |
> |
public void realRun() throws InterruptedException { |
337 |
|
phaser.register(); |
338 |
< |
getRunnable(LONG_DELAY_MS).run(); |
338 |
> |
threadStarted.countDown(); |
339 |
|
phaser.awaitAdvance(phaser.arrive()); |
340 |
+ |
assertTrue(Thread.currentThread().isInterrupted()); |
341 |
|
}}); |
342 |
< |
phaser.register(); |
343 |
< |
th1.start(); |
345 |
< |
Thread.sleep(SHORT_DELAY_MS); |
346 |
< |
th1.interrupt(); |
347 |
< |
Thread.sleep(LONG_DELAY_MS); |
342 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
343 |
> |
t.interrupt(); |
344 |
|
phaser.arrive(); |
345 |
< |
assertFalse(th1.isInterrupted()); |
345 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
346 |
|
} |
347 |
|
|
348 |
|
/** |
354 |
|
final AtomicInteger phaseCount = new AtomicInteger(0); |
355 |
|
List<Thread> threads = new ArrayList<Thread>(); |
356 |
|
for (int i = 0; i < 4; i++) { |
357 |
< |
threads.add(new Thread(new CheckedRunnable() { |
358 |
< |
void realRun() { |
357 |
> |
threads.add(newStartedThread(new CheckedRunnable() { |
358 |
> |
public void realRun() { |
359 |
|
int phase = phaser.arrive(); |
360 |
|
phaseCount.incrementAndGet(); |
361 |
< |
getRunnable(LONG_DELAY_MS).run(); |
361 |
> |
sleepTillInterrupted(SMALL_DELAY_MS); |
362 |
|
phaser.awaitAdvance(phase); |
363 |
< |
threadAssertTrue(phaseCount.get() == 4); |
363 |
> |
assertEquals(phaseCount.get(), 4); |
364 |
|
}})); |
365 |
|
} |
366 |
|
for (Thread thread : threads) |
371 |
– |
thread.start(); |
372 |
– |
for (Thread thread : threads) |
367 |
|
thread.join(); |
368 |
|
} |
369 |
|
|
370 |
|
/** |
371 |
|
* awaitAdvance returns the current phase |
372 |
|
*/ |
373 |
< |
public void testAwaitAdvance5() { |
373 |
> |
public void testAwaitAdvance5() throws InterruptedException { |
374 |
|
final Phaser phaser = new Phaser(1); |
375 |
|
int phase = phaser.awaitAdvance(phaser.arrive()); |
376 |
|
assertEquals(phase, phaser.getPhase()); |
377 |
|
phaser.register(); |
378 |
< |
for (int i = 0; i < eight; i++) { |
379 |
< |
new Thread(new CheckedRunnable() { |
380 |
< |
void realRun() { |
381 |
< |
getRunnable(SHORT_DELAY_MS).run(); |
378 |
> |
List<Thread> threads = new ArrayList<Thread>(); |
379 |
> |
for (int i = 0; i < 8; i++) { |
380 |
> |
final CountDownLatch latch = new CountDownLatch(1); |
381 |
> |
final boolean goesFirst = ((i & 1) == 0); |
382 |
> |
threads.add(newStartedThread(new CheckedRunnable() { |
383 |
> |
public void realRun() throws InterruptedException { |
384 |
> |
if (goesFirst) |
385 |
> |
latch.countDown(); |
386 |
> |
else |
387 |
> |
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
388 |
|
phaser.arrive(); |
389 |
< |
}}).start(); |
389 |
> |
}})); |
390 |
> |
if (goesFirst) |
391 |
> |
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
392 |
> |
else |
393 |
> |
latch.countDown(); |
394 |
|
phase = phaser.awaitAdvance(phaser.arrive()); |
395 |
< |
threadAssertEquals(phase, phaser.getPhase()); |
395 |
> |
assertEquals(phase, phaser.getPhase()); |
396 |
|
} |
397 |
+ |
for (Thread thread : threads) |
398 |
+ |
awaitTermination(thread, SMALL_DELAY_MS); |
399 |
|
} |
400 |
|
|
401 |
|
/** |
402 |
|
* awaitAdvance returns when the phaser is externally terminated |
403 |
|
*/ |
404 |
< |
public void testAwaitAdvance6() { |
404 |
> |
public void testAwaitAdvance6() throws InterruptedException { |
405 |
|
final Phaser phaser = new Phaser(3); |
406 |
< |
/* |
407 |
< |
* Start new thread. This thread waits a small amount of time |
408 |
< |
* and waits for the other two parties to arrive. The party |
409 |
< |
* in the main thread arrives quickly so at best this thread |
410 |
< |
* waits for the second thread's party to arrive |
411 |
< |
*/ |
412 |
< |
new Thread(new CheckedRunnable() { |
413 |
< |
void realRun() { |
414 |
< |
getRunnable(SMALL_DELAY_MS).run(); |
415 |
< |
int phase = phaser.awaitAdvance(phaser.arrive()); |
416 |
< |
/* |
417 |
< |
* This point is reached when force termination is called in which phase = -1 |
418 |
< |
*/ |
419 |
< |
threadAssertTrue(phase < 0); |
420 |
< |
threadAssertTrue(phaser.isTerminated()); |
415 |
< |
}}).start(); |
416 |
< |
/* |
417 |
< |
* This thread will cause the first thread run to wait, in doing so |
418 |
< |
* the main thread will force termination in which the first thread |
419 |
< |
* should exit peacefully as this one |
420 |
< |
*/ |
421 |
< |
new Thread(new CheckedRunnable() { |
422 |
< |
void realRun() { |
423 |
< |
getRunnable(LONG_DELAY_MS).run(); |
424 |
< |
int p1 = phaser.arrive(); |
425 |
< |
int phase = phaser.awaitAdvance(p1); |
426 |
< |
threadAssertTrue(phase < 0); |
427 |
< |
threadAssertTrue(phaser.isTerminated()); |
428 |
< |
}}).start(); |
429 |
< |
|
430 |
< |
phaser.arrive(); |
406 |
> |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
407 |
> |
final List<Thread> threads = new ArrayList<Thread>(); |
408 |
> |
for (int i = 0; i < 2; i++) { |
409 |
> |
Runnable r = new CheckedRunnable() { |
410 |
> |
public void realRun() { |
411 |
> |
int p1 = phaser.arrive(); |
412 |
> |
assertTrue(p1 >= 0); |
413 |
> |
threadsStarted.countDown(); |
414 |
> |
int phase = phaser.awaitAdvance(p1); |
415 |
> |
assertTrue(phase < 0); |
416 |
> |
assertTrue(phaser.isTerminated()); |
417 |
> |
}}; |
418 |
> |
threads.add(newStartedThread(r)); |
419 |
> |
} |
420 |
> |
threadsStarted.await(); |
421 |
|
phaser.forceTermination(); |
422 |
+ |
for (Thread thread : threads) |
423 |
+ |
awaitTermination(thread, SMALL_DELAY_MS); |
424 |
|
} |
425 |
|
|
426 |
|
/** |
432 |
|
Phaser phaser = new Phaser(); |
433 |
|
phaser.arriveAndAwaitAdvance(); |
434 |
|
shouldThrow(); |
435 |
< |
} catch (IllegalStateException success) { |
444 |
< |
} |
435 |
> |
} catch (IllegalStateException success) {} |
436 |
|
} |
437 |
|
|
438 |
|
/** |
440 |
|
*/ |
441 |
|
public void testArriveAndAwaitAdvance2() throws InterruptedException { |
442 |
|
final Phaser phaser = new Phaser(2); |
443 |
< |
Thread th = new Thread(new CheckedRunnable() { |
444 |
< |
void realRun() { |
443 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
444 |
> |
final AtomicBoolean advanced = new AtomicBoolean(false); |
445 |
> |
final AtomicBoolean checkedInterruptStatus = new AtomicBoolean(false); |
446 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
447 |
> |
public void realRun() throws InterruptedException { |
448 |
> |
threadStarted.countDown(); |
449 |
|
phaser.arriveAndAwaitAdvance(); |
450 |
+ |
advanced.set(true); |
451 |
+ |
assertTrue(Thread.currentThread().isInterrupted()); |
452 |
+ |
while (!checkedInterruptStatus.get()) |
453 |
+ |
Thread.yield(); |
454 |
|
}}); |
455 |
|
|
456 |
< |
th.start(); |
457 |
< |
Thread.sleep(LONG_DELAY_MS); |
459 |
< |
th.interrupt(); |
460 |
< |
Thread.sleep(LONG_DELAY_MS); |
456 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
457 |
> |
t.interrupt(); |
458 |
|
phaser.arrive(); |
459 |
< |
assertFalse(th.isInterrupted()); |
459 |
> |
while (!advanced.get()) |
460 |
> |
Thread.yield(); |
461 |
> |
assertTrue(t.isInterrupted()); |
462 |
> |
checkedInterruptStatus.set(true); |
463 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
464 |
|
} |
465 |
|
|
466 |
|
/** |
468 |
|
* number of arrived parties is the same number that is accounted |
469 |
|
* for when the main thread awaitsAdvance |
470 |
|
*/ |
471 |
< |
public void testArriveAndAwaitAdvance3() { |
471 |
> |
public void testArriveAndAwaitAdvance3() throws InterruptedException { |
472 |
|
final Phaser phaser = new Phaser(1); |
473 |
< |
final AtomicInteger arrivingCount = new AtomicInteger(0); |
474 |
< |
for (final Runnable run : getRunnables(six, SHORT_DELAY_MS)) { |
475 |
< |
new Thread(new CheckedRunnable() { |
476 |
< |
void realRun() { |
477 |
< |
phaser.register(); |
478 |
< |
run.run(); |
479 |
< |
arrivingCount.getAndIncrement(); |
479 |
< |
phaser.arrive(); |
480 |
< |
}}).start(); |
481 |
< |
} |
482 |
< |
int phaseNumber = phaser.arriveAndAwaitAdvance(); |
483 |
< |
arrivingCount.incrementAndGet(); |
484 |
< |
//the + 1 adds to expectedArrive to account for the main threads arrival |
485 |
< |
int expectedArrived = phaseNumber > 0 ? phaseNumber * six + 1 : phaser.getArrivedParties() + 1; |
486 |
< |
threadAssertEquals(expectedArrived, arrivingCount.get()); |
487 |
< |
} |
488 |
< |
// .. initially called, for n tasks via |
489 |
< |
private List<Runnable> getRunnables(int size, long wait) { |
490 |
< |
List<Runnable> list = new ArrayList<Runnable>(); |
491 |
< |
for (int i = 0; i < size; i++) { |
492 |
< |
list.add(getRunnable(wait)); |
473 |
> |
final List<Thread> threads = new ArrayList<Thread>(); |
474 |
> |
for (int i = 0; i < 3; i++) { |
475 |
> |
threads.add(newStartedThread(new CheckedRunnable() { |
476 |
> |
public void realRun() throws InterruptedException { |
477 |
> |
phaser.register(); |
478 |
> |
phaser.arriveAndAwaitAdvance(); |
479 |
> |
}})); |
480 |
|
} |
481 |
< |
return list; |
482 |
< |
} |
483 |
< |
|
484 |
< |
private Runnable getRunnable(final long wait) { |
485 |
< |
return new CheckedRunnable() { |
499 |
< |
void realRun() { |
500 |
< |
try { |
501 |
< |
Thread.sleep(wait); |
502 |
< |
} catch (InterruptedException noop) { |
503 |
< |
// sleep interruption isn't a problem case for these example |
504 |
< |
} |
505 |
< |
} |
506 |
< |
}; |
481 |
> |
Thread.sleep(MEDIUM_DELAY_MS); |
482 |
> |
assertEquals(phaser.getArrivedParties(), 3); |
483 |
> |
phaser.arriveAndAwaitAdvance(); |
484 |
> |
for (Thread thread : threads) |
485 |
> |
thread.join(); |
486 |
|
} |
487 |
|
|
488 |
|
} |