8 |
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import java.util.ArrayList; |
9 |
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import java.util.List; |
10 |
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import java.util.concurrent.atomic.AtomicInteger; |
11 |
+ |
import java.util.concurrent.atomic.AtomicBoolean; |
12 |
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import java.util.concurrent.*; |
13 |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
15 |
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import junit.framework.Test; |
16 |
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import junit.framework.TestSuite; |
17 |
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|
25 |
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return new TestSuite(PhaserTest.class); |
26 |
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} |
27 |
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|
28 |
+ |
/** Checks state of phaser. */ |
29 |
+ |
protected void assertState(Phaser phaser, |
30 |
+ |
int phase, int parties, int unarrived) { |
31 |
+ |
assertEquals(phase, phaser.getPhase()); |
32 |
+ |
assertEquals(parties, phaser.getRegisteredParties()); |
33 |
+ |
assertEquals(unarrived, phaser.getUnarrivedParties()); |
34 |
+ |
assertEquals(parties - unarrived, phaser.getArrivedParties()); |
35 |
+ |
assertTrue((phaser.getPhase() >= 0) ^ phaser.isTerminated()); |
36 |
+ |
} |
37 |
+ |
|
38 |
+ |
/** Checks state of terminated phaser. */ |
39 |
+ |
protected void assertTerminated(Phaser phaser, int parties, int unarrived) { |
40 |
+ |
assertTrue(phaser.isTerminated()); |
41 |
+ |
assertTrue(phaser.getPhase() < 0); |
42 |
+ |
assertEquals(parties, phaser.getRegisteredParties()); |
43 |
+ |
assertEquals(unarrived, phaser.getUnarrivedParties()); |
44 |
+ |
assertEquals(parties - unarrived, phaser.getArrivedParties()); |
45 |
+ |
} |
46 |
+ |
|
47 |
+ |
protected void assertTerminated(Phaser phaser) { |
48 |
+ |
assertTerminated(phaser, 0, 0); |
49 |
+ |
} |
50 |
+ |
|
51 |
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/** |
52 |
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* Empty constructor builds a new Phaser with no parent, no registered |
53 |
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* parties and initial phase number of 0 |
67 |
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try { |
68 |
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new Phaser(-1); |
69 |
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shouldThrow(); |
70 |
< |
} catch (IllegalArgumentException success) { |
45 |
< |
} |
70 |
> |
} catch (IllegalArgumentException success) {} |
71 |
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} |
72 |
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|
73 |
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/** |
87 |
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try { |
88 |
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new Phaser(new Phaser(), -1); |
89 |
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shouldThrow(); |
90 |
< |
} catch (IllegalArgumentException success) { |
66 |
< |
} |
90 |
> |
} catch (IllegalArgumentException success) {} |
91 |
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} |
92 |
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|
93 |
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/** |
105 |
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*/ |
106 |
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public void testRegister1() { |
107 |
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Phaser phaser = new Phaser(); |
108 |
< |
assertEquals(0, phaser.getUnarrivedParties()); |
109 |
< |
phaser.register(); |
110 |
< |
assertEquals(1, phaser.getUnarrivedParties()); |
87 |
< |
assertEquals(0, phaser.getArrivedParties()); |
108 |
> |
assertState(phaser, 0, 0, 0); |
109 |
> |
assertEquals(0, phaser.register()); |
110 |
> |
assertState(phaser, 0, 1, 1); |
111 |
|
} |
112 |
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|
113 |
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/** |
115 |
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*/ |
116 |
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public void testRegister2() { |
117 |
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Phaser phaser = new Phaser(0); |
118 |
< |
int expectedUnnarivedParties = (1 << 16) - 1; |
119 |
< |
for (int i = 0; i < expectedUnnarivedParties; i++) { |
120 |
< |
phaser.register(); |
121 |
< |
assertEquals(i + 1, phaser.getUnarrivedParties()); |
118 |
> |
int maxParties = (1 << 16) - 1; |
119 |
> |
assertState(phaser, 0, 0, 0); |
120 |
> |
assertEquals(0, phaser.bulkRegister(maxParties - 10)); |
121 |
> |
assertState(phaser, 0, maxParties - 10, maxParties - 10); |
122 |
> |
for (int i = 0; i < 10; i++) { |
123 |
> |
assertState(phaser, 0, maxParties - 10 + i, maxParties - 10 + i); |
124 |
> |
assertEquals(0, phaser.register()); |
125 |
|
} |
126 |
+ |
assertState(phaser, 0, maxParties, maxParties); |
127 |
|
try { |
128 |
|
phaser.register(); |
129 |
|
shouldThrow(); |
130 |
< |
} catch (IllegalStateException success) { |
104 |
< |
} |
130 |
> |
} catch (IllegalStateException success) {} |
131 |
|
} |
132 |
|
|
133 |
|
/** |
137 |
|
public void testRegister3() { |
138 |
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Phaser phaser = new Phaser(); |
139 |
|
assertEquals(0, phaser.register()); |
140 |
< |
phaser.arrive(); |
140 |
> |
assertEquals(0, phaser.arrive()); |
141 |
|
assertEquals(1, phaser.register()); |
142 |
+ |
assertState(phaser, 1, 2, 2); |
143 |
|
} |
144 |
|
|
145 |
|
/** |
148 |
|
*/ |
149 |
|
public void testRegister4() { |
150 |
|
Phaser phaser = new Phaser(1); |
151 |
< |
phaser.arrive(); |
152 |
< |
int expectedPhase = phaser.register(); |
153 |
< |
phaser.arrive(); |
154 |
< |
assertEquals(expectedPhase, phaser.getPhase()); |
128 |
< |
} |
129 |
< |
|
130 |
< |
public void testRegister5() { |
131 |
< |
Phaser phaser = new Phaser(); |
132 |
< |
phaser.register(); |
133 |
< |
assertEquals(1, phaser.getUnarrivedParties()); |
151 |
> |
assertEquals(0, phaser.arrive()); |
152 |
> |
assertEquals(1, phaser.register()); |
153 |
> |
assertEquals(1, phaser.arrive()); |
154 |
> |
assertState(phaser, 1, 2, 1); |
155 |
|
} |
156 |
|
|
157 |
|
/** |
162 |
|
try { |
163 |
|
new Phaser().bulkRegister(-1); |
164 |
|
shouldThrow(); |
165 |
< |
} catch (IllegalArgumentException success) { |
145 |
< |
} |
165 |
> |
} catch (IllegalArgumentException success) {} |
166 |
|
} |
167 |
|
|
168 |
|
/** |
171 |
|
*/ |
172 |
|
public void testBulkRegister2() { |
173 |
|
Phaser phaser = new Phaser(); |
174 |
< |
phaser.bulkRegister(20); |
175 |
< |
assertEquals(20, phaser.getUnarrivedParties()); |
174 |
> |
assertEquals(0, phaser.bulkRegister(20)); |
175 |
> |
assertState(phaser, 0, 20, 20); |
176 |
|
} |
177 |
|
|
178 |
|
/** |
180 |
|
* throws IllegalStateException. |
181 |
|
*/ |
182 |
|
public void testBulkRegister3() { |
183 |
+ |
assertEquals(0, new Phaser().bulkRegister((1 << 16) - 1)); |
184 |
+ |
|
185 |
|
try { |
186 |
|
new Phaser().bulkRegister(1 << 16); |
187 |
|
shouldThrow(); |
188 |
< |
} catch (IllegalStateException success) { |
189 |
< |
} |
188 |
> |
} catch (IllegalStateException success) {} |
189 |
> |
|
190 |
> |
try { |
191 |
> |
new Phaser(2).bulkRegister((1 << 16) - 2); |
192 |
> |
shouldThrow(); |
193 |
> |
} catch (IllegalStateException success) {} |
194 |
|
} |
195 |
|
|
196 |
|
/** |
207 |
|
} |
208 |
|
|
209 |
|
/** |
210 |
< |
* Arrive() on a registered phaser increments phase. |
210 |
> |
* arrive() on a registered phaser increments phase. |
211 |
|
*/ |
212 |
|
public void testArrive1() { |
213 |
|
Phaser phaser = new Phaser(1); |
214 |
< |
phaser.arrive(); |
215 |
< |
assertEquals(1, phaser.getPhase()); |
214 |
> |
assertState(phaser, 0, 1, 1); |
215 |
> |
assertEquals(0, phaser.arrive()); |
216 |
> |
assertState(phaser, 1, 1, 1); |
217 |
|
} |
218 |
|
|
219 |
|
/** |
220 |
|
* arriveAndDeregister does not wait for others to arrive at barrier |
221 |
|
*/ |
222 |
< |
public void testArrive2() throws InterruptedException { |
222 |
> |
public void testArriveAndDeregister() throws InterruptedException { |
223 |
|
final Phaser phaser = new Phaser(1); |
224 |
< |
phaser.register(); |
224 |
> |
for (int i = 0; i < 10; i++) { |
225 |
> |
assertState(phaser, 0, 1, 1); |
226 |
> |
assertEquals(0, phaser.register()); |
227 |
> |
assertState(phaser, 0, 2, 2); |
228 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
229 |
> |
assertState(phaser, 0, 1, 1); |
230 |
> |
} |
231 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
232 |
> |
assertTerminated(phaser); |
233 |
> |
} |
234 |
> |
|
235 |
> |
/** |
236 |
> |
* arriveAndDeregister does not wait for others to arrive at barrier |
237 |
> |
*/ |
238 |
> |
public void testArrive2() throws InterruptedException { |
239 |
> |
final Phaser phaser = new Phaser(); |
240 |
> |
assertEquals(0, phaser.register()); |
241 |
|
List<Thread> threads = new ArrayList<Thread>(); |
242 |
< |
for (int i = 0; i < 10; i++) |
243 |
< |
phaser.register(); |
242 |
> |
for (int i = 0; i < 10; i++) { |
243 |
> |
assertEquals(0, phaser.register()); |
244 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
245 |
< |
void realRun() throws InterruptedException { |
246 |
< |
Thread.sleep(SMALL_DELAY_MS); |
204 |
< |
phaser.arriveAndDeregister(); |
245 |
> |
public void realRun() throws InterruptedException { |
246 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
247 |
|
}})); |
248 |
+ |
} |
249 |
|
|
207 |
– |
phaser.arrive(); |
208 |
– |
assertTrue(threads.get(0).isAlive()); |
209 |
– |
assertFalse(phaser.isTerminated()); |
250 |
|
for (Thread thread : threads) |
251 |
< |
thread.join(); |
251 |
> |
awaitTermination(thread, LONG_DELAY_MS); |
252 |
> |
assertState(phaser, 0, 1, 1); |
253 |
> |
assertEquals(0, phaser.arrive()); |
254 |
> |
assertState(phaser, 1, 1, 1); |
255 |
|
} |
256 |
|
|
257 |
|
/** |
260 |
|
public void testArrive3() { |
261 |
|
Phaser phaser = new Phaser(1); |
262 |
|
phaser.forceTermination(); |
263 |
+ |
assertTerminated(phaser, 1, 1); |
264 |
|
assertTrue(phaser.arrive() < 0); |
265 |
+ |
assertTrue(phaser.register() < 0); |
266 |
+ |
assertTrue(phaser.arriveAndDeregister() < 0); |
267 |
+ |
assertTrue(phaser.awaitAdvance(1) < 0); |
268 |
+ |
assertTrue(phaser.getPhase() < 0); |
269 |
|
} |
270 |
|
|
271 |
|
/** |
277 |
|
Phaser phaser = new Phaser(); |
278 |
|
phaser.arriveAndDeregister(); |
279 |
|
shouldThrow(); |
280 |
< |
} catch (IllegalStateException success) { |
233 |
< |
} |
280 |
> |
} catch (IllegalStateException success) {} |
281 |
|
} |
282 |
|
|
283 |
|
/** |
284 |
< |
* arriveAndDeregister deregisters reduces the number of arrived parties |
284 |
> |
* arriveAndDeregister reduces the number of arrived parties |
285 |
|
*/ |
286 |
< |
public void testArriveAndDergeister2() { |
286 |
> |
public void testArriveAndDeregister2() { |
287 |
|
final Phaser phaser = new Phaser(1); |
288 |
< |
phaser.register(); |
289 |
< |
phaser.arrive(); |
290 |
< |
int p = phaser.getArrivedParties(); |
291 |
< |
assertTrue(p == 1); |
292 |
< |
phaser.arriveAndDeregister(); |
246 |
< |
assertTrue(phaser.getArrivedParties() < p); |
288 |
> |
assertEquals(0, phaser.register()); |
289 |
> |
assertEquals(0, phaser.arrive()); |
290 |
> |
assertState(phaser, 0, 2, 1); |
291 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
292 |
> |
assertState(phaser, 1, 1, 1); |
293 |
|
} |
294 |
|
|
295 |
|
/** |
296 |
< |
* arriveAndDeregister arrives to the barrier on a phaser with a parent and |
296 |
> |
* arriveAndDeregister arrives at the barrier on a phaser with a parent and |
297 |
|
* when a deregistration occurs and causes the phaser to have zero parties |
298 |
|
* its parent will be deregistered as well |
299 |
|
*/ |
300 |
< |
public void testArriveAndDeregsiter3() { |
300 |
> |
public void testArriveAndDeregister3() { |
301 |
|
Phaser parent = new Phaser(); |
302 |
< |
Phaser root = new Phaser(parent); |
303 |
< |
root.register(); |
304 |
< |
assertTrue(parent.getUnarrivedParties() > 0); |
305 |
< |
assertTrue(root.getUnarrivedParties() > 0); |
306 |
< |
root.arriveAndDeregister(); |
307 |
< |
assertTrue(parent.getUnarrivedParties() == 0); |
308 |
< |
assertTrue(root.getUnarrivedParties() == 0); |
309 |
< |
assertTrue(root.isTerminated() && parent.isTerminated()); |
302 |
> |
Phaser child = new Phaser(parent); |
303 |
> |
assertState(child, 0, 0, 0); |
304 |
> |
assertState(parent, 0, 1, 1); |
305 |
> |
assertEquals(0, child.register()); |
306 |
> |
assertState(child, 0, 1, 1); |
307 |
> |
assertState(parent, 0, 1, 1); |
308 |
> |
assertEquals(0, child.arriveAndDeregister()); |
309 |
> |
assertTerminated(child); |
310 |
> |
assertTerminated(parent); |
311 |
|
} |
312 |
|
|
313 |
|
/** |
314 |
|
* arriveAndDeregister deregisters one party from its parent when |
315 |
< |
* the number of parties of root is zero after deregistration |
315 |
> |
* the number of parties of child is zero after deregistration |
316 |
|
*/ |
317 |
< |
public void testArriveAndDeregsiter4() { |
317 |
> |
public void testArriveAndDeregister4() { |
318 |
|
Phaser parent = new Phaser(); |
319 |
< |
Phaser root = new Phaser(parent); |
320 |
< |
parent.register(); |
321 |
< |
root.register(); |
322 |
< |
int parentParties = parent.getUnarrivedParties(); |
323 |
< |
root.arriveAndDeregister(); |
324 |
< |
assertEquals(parentParties - 1, parent.getUnarrivedParties()); |
319 |
> |
Phaser child = new Phaser(parent); |
320 |
> |
assertEquals(0, parent.register()); |
321 |
> |
assertEquals(0, child.register()); |
322 |
> |
assertState(child, 0, 1, 1); |
323 |
> |
assertState(parent, 0, 2, 2); |
324 |
> |
assertEquals(0, child.arriveAndDeregister()); |
325 |
> |
assertState(child, 0, 0, 0); |
326 |
> |
assertState(parent, 0, 1, 1); |
327 |
|
} |
328 |
|
|
329 |
|
/** |
331 |
|
* the number of parties of root is nonzero after deregistration. |
332 |
|
*/ |
333 |
|
public void testArriveAndDeregister5() { |
334 |
< |
Phaser parent = new Phaser(); |
334 |
> |
Phaser root = new Phaser(); |
335 |
> |
Phaser parent = new Phaser(root); |
336 |
|
Phaser child = new Phaser(parent); |
337 |
< |
Phaser root = new Phaser(child); |
338 |
< |
assertTrue(parent.getUnarrivedParties() > 0); |
339 |
< |
assertTrue(child.getUnarrivedParties() > 0); |
340 |
< |
root.register(); |
341 |
< |
root.arriveAndDeregister(); |
342 |
< |
assertTrue(parent.getUnarrivedParties() == 0); |
343 |
< |
assertTrue(child.getUnarrivedParties() == 0); |
344 |
< |
assertTrue(root.isTerminated()); |
337 |
> |
assertState(root, 0, 1, 1); |
338 |
> |
assertState(parent, 0, 1, 1); |
339 |
> |
assertState(child, 0, 0, 0); |
340 |
> |
assertEquals(0, child.register()); |
341 |
> |
assertState(root, 0, 1, 1); |
342 |
> |
assertState(parent, 0, 1, 1); |
343 |
> |
assertState(child, 0, 1, 1); |
344 |
> |
assertEquals(0, child.arriveAndDeregister()); |
345 |
> |
assertTerminated(child); |
346 |
> |
assertTerminated(parent); |
347 |
> |
assertTerminated(root); |
348 |
|
} |
349 |
|
|
350 |
|
/** |
354 |
|
public void testArriveAndDeregister6() throws InterruptedException { |
355 |
|
final Phaser phaser = new Phaser(2); |
356 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
357 |
< |
void realRun() { |
358 |
< |
sleepTillInterrupted(SHORT_DELAY_MS); |
306 |
< |
phaser.arrive(); |
357 |
> |
public void realRun() { |
358 |
> |
assertEquals(0, phaser.arrive()); |
359 |
|
}}); |
360 |
< |
phaser.arriveAndAwaitAdvance(); |
361 |
< |
int phase = phaser.arriveAndDeregister(); |
362 |
< |
assertEquals(phase, phaser.getPhase()); |
363 |
< |
t.join(); |
360 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
361 |
> |
assertState(phaser, 1, 2, 2); |
362 |
> |
assertEquals(1, phaser.arriveAndDeregister()); |
363 |
> |
assertState(phaser, 1, 1, 1); |
364 |
> |
assertEquals(1, phaser.arriveAndDeregister()); |
365 |
> |
assertTerminated(phaser); |
366 |
> |
awaitTermination(t, SHORT_DELAY_MS); |
367 |
|
} |
368 |
|
|
369 |
|
/** |
371 |
|
*/ |
372 |
|
public void testAwaitAdvance1() { |
373 |
|
final Phaser phaser = new Phaser(1); |
374 |
< |
phaser.awaitAdvance(phaser.arrive()); |
374 |
> |
assertEquals(0, phaser.arrive()); |
375 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
376 |
|
} |
377 |
|
|
378 |
|
/** |
381 |
|
*/ |
382 |
|
public void testAwaitAdvance2() { |
383 |
|
Phaser phaser = new Phaser(); |
384 |
< |
phaser.awaitAdvance(-1); |
384 |
> |
assertTrue(phaser.awaitAdvance(-1) < 0); |
385 |
> |
assertState(phaser, 0, 0, 0); |
386 |
|
} |
387 |
|
|
388 |
|
/** |
389 |
< |
* awaitAdvance while waiting does not abort on interrupt. |
389 |
> |
* awaitAdvance continues waiting if interrupted before waiting |
390 |
|
*/ |
391 |
< |
public void testAwaitAdvance3() throws InterruptedException { |
391 |
> |
public void testAwaitAdvanceAfterInterrupt() throws InterruptedException { |
392 |
|
final Phaser phaser = new Phaser(); |
393 |
< |
phaser.register(); |
393 |
> |
assertEquals(0, phaser.register()); |
394 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
395 |
|
|
396 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
397 |
< |
void realRun() throws InterruptedException { |
398 |
< |
phaser.register(); |
399 |
< |
sleepTillInterrupted(LONG_DELAY_MS); |
400 |
< |
phaser.awaitAdvance(phaser.arrive()); |
397 |
> |
public void realRun() throws InterruptedException { |
398 |
> |
Thread.currentThread().interrupt(); |
399 |
> |
assertEquals(0, phaser.register()); |
400 |
> |
assertEquals(0, phaser.arrive()); |
401 |
> |
threadStarted.countDown(); |
402 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
403 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
404 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
405 |
|
}}); |
406 |
< |
Thread.sleep(SMALL_DELAY_MS); |
406 |
> |
|
407 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
408 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
409 |
> |
assertEquals(0, phaser.arrive()); |
410 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
411 |
> |
|
412 |
> |
Thread.currentThread().interrupt(); |
413 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
414 |
> |
assertTrue(Thread.interrupted()); |
415 |
> |
} |
416 |
> |
|
417 |
> |
/** |
418 |
> |
* awaitAdvance continues waiting if interrupted while waiting |
419 |
> |
*/ |
420 |
> |
public void testAwaitAdvanceBeforeInterrupt() throws InterruptedException { |
421 |
> |
final Phaser phaser = new Phaser(); |
422 |
> |
assertEquals(0, phaser.register()); |
423 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
424 |
> |
|
425 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
426 |
> |
public void realRun() throws InterruptedException { |
427 |
> |
assertEquals(0, phaser.register()); |
428 |
> |
assertEquals(0, phaser.arrive()); |
429 |
> |
threadStarted.countDown(); |
430 |
> |
assertFalse(Thread.currentThread().isInterrupted()); |
431 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
432 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
433 |
> |
}}); |
434 |
> |
|
435 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
436 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
437 |
> |
t.interrupt(); |
438 |
> |
assertEquals(0, phaser.arrive()); |
439 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
440 |
> |
|
441 |
> |
Thread.currentThread().interrupt(); |
442 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
443 |
> |
assertTrue(Thread.interrupted()); |
444 |
> |
} |
445 |
> |
|
446 |
> |
/** |
447 |
> |
* arriveAndAwaitAdvance continues waiting if interrupted before waiting |
448 |
> |
*/ |
449 |
> |
public void testArriveAndAwaitAdvanceAfterInterrupt() |
450 |
> |
throws InterruptedException { |
451 |
> |
final Phaser phaser = new Phaser(); |
452 |
> |
assertEquals(0, phaser.register()); |
453 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
454 |
> |
|
455 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
456 |
> |
public void realRun() throws InterruptedException { |
457 |
> |
Thread.currentThread().interrupt(); |
458 |
> |
assertEquals(0, phaser.register()); |
459 |
> |
threadStarted.countDown(); |
460 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
461 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
462 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
463 |
> |
}}); |
464 |
> |
|
465 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
466 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
467 |
> |
Thread.currentThread().interrupt(); |
468 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
469 |
> |
assertTrue(Thread.interrupted()); |
470 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
471 |
> |
} |
472 |
> |
|
473 |
> |
/** |
474 |
> |
* arriveAndAwaitAdvance continues waiting if interrupted while waiting |
475 |
> |
*/ |
476 |
> |
public void testArriveAndAwaitAdvanceBeforeInterrupt() |
477 |
> |
throws InterruptedException { |
478 |
> |
final Phaser phaser = new Phaser(); |
479 |
> |
assertEquals(0, phaser.register()); |
480 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
481 |
> |
|
482 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
483 |
> |
public void realRun() throws InterruptedException { |
484 |
> |
assertEquals(0, phaser.register()); |
485 |
> |
threadStarted.countDown(); |
486 |
> |
assertFalse(Thread.currentThread().isInterrupted()); |
487 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
488 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
489 |
> |
}}); |
490 |
> |
|
491 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
492 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
493 |
|
t.interrupt(); |
494 |
< |
Thread.sleep(SMALL_DELAY_MS); |
495 |
< |
phaser.arrive(); |
496 |
< |
assertFalse(t.isInterrupted()); |
497 |
< |
t.join(); |
494 |
> |
Thread.currentThread().interrupt(); |
495 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
496 |
> |
assertTrue(Thread.interrupted()); |
497 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
498 |
|
} |
499 |
|
|
500 |
|
/** |
503 |
|
*/ |
504 |
|
public void testAwaitAdvance4() throws InterruptedException { |
505 |
|
final Phaser phaser = new Phaser(4); |
506 |
< |
final AtomicInteger phaseCount = new AtomicInteger(0); |
506 |
> |
final AtomicInteger count = new AtomicInteger(0); |
507 |
|
List<Thread> threads = new ArrayList<Thread>(); |
508 |
< |
for (int i = 0; i < 4; i++) { |
508 |
> |
for (int i = 0; i < 4; i++) |
509 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
510 |
< |
void realRun() { |
511 |
< |
int phase = phaser.arrive(); |
512 |
< |
phaseCount.incrementAndGet(); |
513 |
< |
sleepTillInterrupted(SMALL_DELAY_MS); |
514 |
< |
phaser.awaitAdvance(phase); |
515 |
< |
threadAssertTrue(phaseCount.get() == 4); |
516 |
< |
}})); |
517 |
< |
} |
510 |
> |
public void realRun() { |
511 |
> |
for (int k = 0; k < 3; k++) { |
512 |
> |
assertEquals(2*k+1, phaser.arriveAndAwaitAdvance()); |
513 |
> |
count.incrementAndGet(); |
514 |
> |
assertEquals(2*k+1, phaser.arrive()); |
515 |
> |
assertEquals(2*k+2, phaser.awaitAdvance(2*k+1)); |
516 |
> |
assertEquals(count.get(), 4*(k+1)); |
517 |
> |
}}})); |
518 |
> |
|
519 |
|
for (Thread thread : threads) |
520 |
< |
thread.join(); |
520 |
> |
awaitTermination(thread, MEDIUM_DELAY_MS); |
521 |
|
} |
522 |
|
|
523 |
|
/** |
525 |
|
*/ |
526 |
|
public void testAwaitAdvance5() throws InterruptedException { |
527 |
|
final Phaser phaser = new Phaser(1); |
528 |
< |
int phase = phaser.awaitAdvance(phaser.arrive()); |
529 |
< |
assertEquals(phase, phaser.getPhase()); |
530 |
< |
phaser.register(); |
528 |
> |
assertEquals(1, phaser.awaitAdvance(phaser.arrive())); |
529 |
> |
assertEquals(1, phaser.getPhase()); |
530 |
> |
assertEquals(1, phaser.register()); |
531 |
|
List<Thread> threads = new ArrayList<Thread>(); |
532 |
|
for (int i = 0; i < 8; i++) { |
533 |
+ |
final CountDownLatch latch = new CountDownLatch(1); |
534 |
+ |
final boolean goesFirst = ((i & 1) == 0); |
535 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
536 |
< |
void realRun() { |
537 |
< |
sleepTillInterrupted(SHORT_DELAY_MS); |
536 |
> |
public void realRun() throws InterruptedException { |
537 |
> |
if (goesFirst) |
538 |
> |
latch.countDown(); |
539 |
> |
else |
540 |
> |
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
541 |
|
phaser.arrive(); |
542 |
|
}})); |
543 |
< |
phase = phaser.awaitAdvance(phaser.arrive()); |
544 |
< |
threadAssertEquals(phase, phaser.getPhase()); |
543 |
> |
if (goesFirst) |
544 |
> |
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
545 |
> |
else |
546 |
> |
latch.countDown(); |
547 |
> |
assertEquals(i + 2, phaser.awaitAdvance(phaser.arrive())); |
548 |
> |
assertEquals(i + 2, phaser.getPhase()); |
549 |
|
} |
550 |
|
for (Thread thread : threads) |
551 |
< |
thread.join(); |
551 |
> |
awaitTermination(thread, SMALL_DELAY_MS); |
552 |
|
} |
553 |
|
|
554 |
|
/** |
556 |
|
*/ |
557 |
|
public void testAwaitAdvance6() throws InterruptedException { |
558 |
|
final Phaser phaser = new Phaser(3); |
559 |
< |
/* |
560 |
< |
* Start new thread. This thread waits a small amount of time |
561 |
< |
* and waits for the other two parties to arrive. The party |
562 |
< |
* in the main thread arrives quickly so at best this thread |
563 |
< |
* waits for the second thread's party to arrive |
564 |
< |
*/ |
565 |
< |
Thread t1 = newStartedThread(new CheckedRunnable() { |
566 |
< |
void realRun() { |
567 |
< |
sleepTillInterrupted(SMALL_DELAY_MS); |
568 |
< |
int phase = phaser.awaitAdvance(phaser.arrive()); |
569 |
< |
/* |
570 |
< |
* This point is reached when force termination is called in which phase = -1 |
571 |
< |
*/ |
572 |
< |
threadAssertTrue(phase < 0); |
573 |
< |
threadAssertTrue(phaser.isTerminated()); |
416 |
< |
}}); |
417 |
< |
/* |
418 |
< |
* This thread will cause the first thread run to wait, in doing so |
419 |
< |
* the main thread will force termination in which the first thread |
420 |
< |
* should exit peacefully as this one |
421 |
< |
*/ |
422 |
< |
Thread t2 = newStartedThread(new CheckedRunnable() { |
423 |
< |
void realRun() { |
424 |
< |
sleepTillInterrupted(MEDIUM_DELAY_MS); |
425 |
< |
int p1 = phaser.arrive(); |
426 |
< |
int phase = phaser.awaitAdvance(p1); |
427 |
< |
threadAssertTrue(phase < 0); |
428 |
< |
threadAssertTrue(phaser.isTerminated()); |
429 |
< |
}}); |
430 |
< |
|
431 |
< |
phaser.arrive(); |
559 |
> |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
560 |
> |
final List<Thread> threads = new ArrayList<Thread>(); |
561 |
> |
for (int i = 0; i < 2; i++) { |
562 |
> |
Runnable r = new CheckedRunnable() { |
563 |
> |
public void realRun() { |
564 |
> |
assertEquals(0, phaser.arrive()); |
565 |
> |
threadsStarted.countDown(); |
566 |
> |
assertTrue(phaser.awaitAdvance(0) < 0); |
567 |
> |
assertTrue(phaser.isTerminated()); |
568 |
> |
assertTrue(phaser.getPhase() < 0); |
569 |
> |
assertEquals(3, phaser.getRegisteredParties()); |
570 |
> |
}}; |
571 |
> |
threads.add(newStartedThread(r)); |
572 |
> |
} |
573 |
> |
threadsStarted.await(); |
574 |
|
phaser.forceTermination(); |
575 |
< |
t1.join(); |
576 |
< |
t2.join(); |
575 |
> |
for (Thread thread : threads) |
576 |
> |
awaitTermination(thread, SMALL_DELAY_MS); |
577 |
> |
assertTrue(phaser.isTerminated()); |
578 |
> |
assertTrue(phaser.getPhase() < 0); |
579 |
> |
assertEquals(3, phaser.getRegisteredParties()); |
580 |
|
} |
581 |
|
|
582 |
|
/** |
588 |
|
Phaser phaser = new Phaser(); |
589 |
|
phaser.arriveAndAwaitAdvance(); |
590 |
|
shouldThrow(); |
591 |
< |
} catch (IllegalStateException success) { |
447 |
< |
} |
448 |
< |
} |
449 |
< |
|
450 |
< |
/** |
451 |
< |
* Interrupted arriveAndAwaitAdvance does not throw InterruptedException |
452 |
< |
*/ |
453 |
< |
public void testArriveAndAwaitAdvance2() throws InterruptedException { |
454 |
< |
final Phaser phaser = new Phaser(2); |
455 |
< |
Thread th = newStartedThread(new CheckedRunnable() { |
456 |
< |
void realRun() { |
457 |
< |
phaser.arriveAndAwaitAdvance(); |
458 |
< |
}}); |
459 |
< |
|
460 |
< |
Thread.sleep(SMALL_DELAY_MS); |
461 |
< |
th.interrupt(); |
462 |
< |
Thread.sleep(SMALL_DELAY_MS); |
463 |
< |
phaser.arrive(); |
464 |
< |
assertFalse(th.isInterrupted()); |
465 |
< |
th.join(); |
591 |
> |
} catch (IllegalStateException success) {} |
592 |
|
} |
593 |
|
|
594 |
|
/** |
598 |
|
*/ |
599 |
|
public void testArriveAndAwaitAdvance3() throws InterruptedException { |
600 |
|
final Phaser phaser = new Phaser(1); |
601 |
< |
final AtomicInteger arrivingCount = new AtomicInteger(0); |
601 |
> |
final int THREADS = 3; |
602 |
> |
final CountDownLatch threadsStarted = new CountDownLatch(THREADS); |
603 |
|
final List<Thread> threads = new ArrayList<Thread>(); |
604 |
< |
for (int i = 0; i < 6; i++) { |
604 |
> |
for (int i = 0; i < THREADS; i++) |
605 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
606 |
< |
void realRun() throws InterruptedException { |
607 |
< |
phaser.register(); |
608 |
< |
sleepTillInterrupted(SHORT_DELAY_MS); |
609 |
< |
arrivingCount.getAndIncrement(); |
483 |
< |
phaser.arrive(); |
606 |
> |
public void realRun() throws InterruptedException { |
607 |
> |
assertEquals(0, phaser.register()); |
608 |
> |
threadsStarted.countDown(); |
609 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
610 |
|
}})); |
611 |
< |
} |
612 |
< |
int phaseNumber = phaser.arriveAndAwaitAdvance(); |
613 |
< |
arrivingCount.incrementAndGet(); |
614 |
< |
//the + 1 adds to expectedArrive to account for the main threads arrival |
615 |
< |
int expectedArrived = phaseNumber > 0 ? phaseNumber * six + 1 : phaser.getArrivedParties() + 1; |
616 |
< |
threadAssertEquals(expectedArrived, arrivingCount.get()); |
611 |
> |
|
612 |
> |
assertTrue(threadsStarted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
613 |
> |
long t0 = System.nanoTime(); |
614 |
> |
while (phaser.getArrivedParties() < THREADS) |
615 |
> |
Thread.yield(); |
616 |
> |
assertEquals(THREADS, phaser.getArrivedParties()); |
617 |
> |
assertTrue(NANOSECONDS.toMillis(System.nanoTime() - t0) < SMALL_DELAY_MS); |
618 |
> |
for (Thread thread : threads) |
619 |
> |
assertTrue(thread.isAlive()); |
620 |
> |
assertState(phaser, 0, THREADS + 1, 1); |
621 |
> |
phaser.arriveAndAwaitAdvance(); |
622 |
|
for (Thread thread : threads) |
623 |
< |
thread.join(); |
623 |
> |
awaitTermination(thread, SMALL_DELAY_MS); |
624 |
> |
assertState(phaser, 1, THREADS + 1, THREADS + 1); |
625 |
|
} |
626 |
|
|
627 |
|
} |