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 John Vint |
6 |
|
*/ |
7 |
|
|
8 |
|
import java.util.ArrayList; |
9 |
|
import java.util.List; |
10 |
|
import java.util.concurrent.atomic.AtomicInteger; |
11 |
+ |
import java.util.concurrent.atomic.AtomicBoolean; |
12 |
|
import java.util.concurrent.*; |
13 |
+ |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
14 |
+ |
import static java.util.concurrent.TimeUnit.NANOSECONDS; |
15 |
|
import junit.framework.Test; |
16 |
|
import junit.framework.TestSuite; |
17 |
|
|
25 |
|
return new TestSuite(PhaserTest.class); |
26 |
|
} |
27 |
|
|
28 |
+ |
private static final int maxParties = 65535; |
29 |
+ |
|
30 |
+ |
/** Checks state of unterminated phaser. */ |
31 |
+ |
protected void assertState(Phaser phaser, |
32 |
+ |
int phase, int parties, int unarrived) { |
33 |
+ |
assertEquals(phase, phaser.getPhase()); |
34 |
+ |
assertEquals(parties, phaser.getRegisteredParties()); |
35 |
+ |
assertEquals(unarrived, phaser.getUnarrivedParties()); |
36 |
+ |
assertEquals(parties - unarrived, phaser.getArrivedParties()); |
37 |
+ |
assertFalse(phaser.isTerminated()); |
38 |
+ |
} |
39 |
+ |
|
40 |
+ |
/** Checks state of terminated phaser. */ |
41 |
+ |
protected void assertTerminated(Phaser phaser, int maxPhase, int parties) { |
42 |
+ |
assertTrue(phaser.isTerminated()); |
43 |
+ |
int expectedPhase = maxPhase + Integer.MIN_VALUE; |
44 |
+ |
assertEquals(expectedPhase, phaser.getPhase()); |
45 |
+ |
assertEquals(parties, phaser.getRegisteredParties()); |
46 |
+ |
assertEquals(expectedPhase, phaser.register()); |
47 |
+ |
assertEquals(expectedPhase, phaser.arrive()); |
48 |
+ |
assertEquals(expectedPhase, phaser.arriveAndDeregister()); |
49 |
+ |
} |
50 |
+ |
|
51 |
+ |
protected void assertTerminated(Phaser phaser, int maxPhase) { |
52 |
+ |
assertTerminated(phaser, maxPhase, 0); |
53 |
+ |
} |
54 |
+ |
|
55 |
|
/** |
56 |
|
* Empty constructor builds a new Phaser with no parent, no registered |
57 |
|
* parties and initial phase number of 0 |
58 |
|
*/ |
59 |
< |
public void testConstructor1() { |
59 |
> |
public void testConstructorDefaultValues() { |
60 |
|
Phaser phaser = new Phaser(); |
61 |
|
assertNull(phaser.getParent()); |
62 |
+ |
assertEquals(0, phaser.getRegisteredParties()); |
63 |
|
assertEquals(0, phaser.getArrivedParties()); |
64 |
+ |
assertEquals(0, phaser.getUnarrivedParties()); |
65 |
|
assertEquals(0, phaser.getPhase()); |
66 |
|
} |
67 |
|
|
68 |
|
/** |
69 |
< |
* A negative party number for the constructor throws illegal argument |
70 |
< |
* exception |
69 |
> |
* Constructing with a negative number of parties throws |
70 |
> |
* IllegalArgumentException |
71 |
|
*/ |
72 |
< |
public void testConstructor2() { |
72 |
> |
public void testConstructorNegativeParties() { |
73 |
|
try { |
74 |
|
new Phaser(-1); |
75 |
|
shouldThrow(); |
77 |
|
} |
78 |
|
|
79 |
|
/** |
80 |
< |
* The parent being input into the constructor should equal the original |
81 |
< |
* parent when being returned |
80 |
> |
* Constructing with a negative number of parties throws |
81 |
> |
* IllegalArgumentException |
82 |
|
*/ |
83 |
< |
public void testConstructor3() { |
84 |
< |
Phaser parent = new Phaser(); |
85 |
< |
assertEquals(parent, new Phaser(parent).getParent()); |
83 |
> |
public void testConstructorNegativeParties2() { |
84 |
> |
try { |
85 |
> |
new Phaser(new Phaser(), -1); |
86 |
> |
shouldThrow(); |
87 |
> |
} catch (IllegalArgumentException success) {} |
88 |
|
} |
89 |
|
|
90 |
|
/** |
91 |
< |
* A negative party number for the constructor throws illegal argument |
92 |
< |
* exception |
91 |
> |
* Constructing with a number of parties > 65535 throws |
92 |
> |
* IllegalArgumentException |
93 |
|
*/ |
94 |
< |
public void testConstructor4() { |
94 |
> |
public void testConstructorPartiesExceedsLimit() { |
95 |
> |
new Phaser(maxParties); |
96 |
|
try { |
97 |
< |
new Phaser(new Phaser(), -1); |
97 |
> |
new Phaser(maxParties + 1); |
98 |
> |
shouldThrow(); |
99 |
> |
} catch (IllegalArgumentException success) {} |
100 |
> |
|
101 |
> |
new Phaser(new Phaser(), maxParties); |
102 |
> |
try { |
103 |
> |
new Phaser(new Phaser(), maxParties + 1); |
104 |
|
shouldThrow(); |
105 |
|
} catch (IllegalArgumentException success) {} |
106 |
|
} |
107 |
|
|
108 |
|
/** |
109 |
+ |
* The parent provided to the constructor should be returned from |
110 |
+ |
* a later call to getParent |
111 |
+ |
*/ |
112 |
+ |
public void testConstructor3() { |
113 |
+ |
Phaser parent = new Phaser(); |
114 |
+ |
assertSame(parent, new Phaser(parent).getParent()); |
115 |
+ |
assertNull(new Phaser(null).getParent()); |
116 |
+ |
} |
117 |
+ |
|
118 |
+ |
/** |
119 |
|
* The parent being input into the parameter should equal the original |
120 |
|
* parent when being returned |
121 |
|
*/ |
122 |
|
public void testConstructor5() { |
123 |
|
Phaser parent = new Phaser(); |
124 |
< |
assertEquals(parent, new Phaser(parent, 0).getParent()); |
124 |
> |
assertSame(parent, new Phaser(parent, 0).getParent()); |
125 |
> |
assertNull(new Phaser(null, 0).getParent()); |
126 |
|
} |
127 |
|
|
128 |
|
/** |
129 |
< |
* register() will increment the number of unarrived parties by one and not |
130 |
< |
* affect its arrived parties |
129 |
> |
* register() will increment the number of unarrived parties by |
130 |
> |
* one and not affect its arrived parties |
131 |
|
*/ |
132 |
|
public void testRegister1() { |
133 |
|
Phaser phaser = new Phaser(); |
134 |
< |
assertEquals(0, phaser.getUnarrivedParties()); |
135 |
< |
phaser.register(); |
136 |
< |
assertEquals(1, phaser.getUnarrivedParties()); |
85 |
< |
assertEquals(0, phaser.getArrivedParties()); |
134 |
> |
assertState(phaser, 0, 0, 0); |
135 |
> |
assertEquals(0, phaser.register()); |
136 |
> |
assertState(phaser, 0, 1, 1); |
137 |
|
} |
138 |
|
|
139 |
|
/** |
141 |
|
*/ |
142 |
|
public void testRegister2() { |
143 |
|
Phaser phaser = new Phaser(0); |
144 |
< |
int expectedUnnarivedParties = (1 << 16) - 1; |
145 |
< |
for (int i = 0; i < expectedUnnarivedParties; i++) { |
146 |
< |
phaser.register(); |
147 |
< |
assertEquals(i + 1, phaser.getUnarrivedParties()); |
144 |
> |
assertState(phaser, 0, 0, 0); |
145 |
> |
assertEquals(0, phaser.bulkRegister(maxParties - 10)); |
146 |
> |
assertState(phaser, 0, maxParties - 10, maxParties - 10); |
147 |
> |
for (int i = 0; i < 10; i++) { |
148 |
> |
assertState(phaser, 0, maxParties - 10 + i, maxParties - 10 + i); |
149 |
> |
assertEquals(0, phaser.register()); |
150 |
|
} |
151 |
+ |
assertState(phaser, 0, maxParties, maxParties); |
152 |
|
try { |
153 |
|
phaser.register(); |
154 |
|
shouldThrow(); |
155 |
|
} catch (IllegalStateException success) {} |
156 |
+ |
|
157 |
+ |
try { |
158 |
+ |
phaser.bulkRegister(Integer.MAX_VALUE); |
159 |
+ |
shouldThrow(); |
160 |
+ |
} catch (IllegalStateException success) {} |
161 |
+ |
|
162 |
+ |
assertEquals(0, phaser.bulkRegister(0)); |
163 |
+ |
assertState(phaser, 0, maxParties, maxParties); |
164 |
|
} |
165 |
|
|
166 |
|
/** |
170 |
|
public void testRegister3() { |
171 |
|
Phaser phaser = new Phaser(); |
172 |
|
assertEquals(0, phaser.register()); |
173 |
< |
phaser.arrive(); |
173 |
> |
assertEquals(0, phaser.arrive()); |
174 |
|
assertEquals(1, phaser.register()); |
175 |
+ |
assertState(phaser, 1, 2, 2); |
176 |
|
} |
177 |
|
|
178 |
|
/** |
181 |
|
*/ |
182 |
|
public void testRegister4() { |
183 |
|
Phaser phaser = new Phaser(1); |
184 |
< |
phaser.arrive(); |
185 |
< |
int expectedPhase = phaser.register(); |
186 |
< |
phaser.arrive(); |
187 |
< |
assertEquals(expectedPhase, phaser.getPhase()); |
125 |
< |
} |
126 |
< |
|
127 |
< |
public void testRegister5() { |
128 |
< |
Phaser phaser = new Phaser(); |
129 |
< |
phaser.register(); |
130 |
< |
assertEquals(1, phaser.getUnarrivedParties()); |
184 |
> |
assertEquals(0, phaser.arrive()); |
185 |
> |
assertEquals(1, phaser.register()); |
186 |
> |
assertEquals(1, phaser.arrive()); |
187 |
> |
assertState(phaser, 1, 2, 1); |
188 |
|
} |
189 |
|
|
190 |
|
/** |
204 |
|
*/ |
205 |
|
public void testBulkRegister2() { |
206 |
|
Phaser phaser = new Phaser(); |
207 |
< |
phaser.bulkRegister(20); |
208 |
< |
assertEquals(20, phaser.getUnarrivedParties()); |
207 |
> |
assertEquals(0, phaser.bulkRegister(0)); |
208 |
> |
assertState(phaser, 0, 0, 0); |
209 |
> |
assertEquals(0, phaser.bulkRegister(20)); |
210 |
> |
assertState(phaser, 0, 20, 20); |
211 |
|
} |
212 |
|
|
213 |
|
/** |
215 |
|
* throws IllegalStateException. |
216 |
|
*/ |
217 |
|
public void testBulkRegister3() { |
218 |
+ |
assertEquals(0, new Phaser().bulkRegister((1 << 16) - 1)); |
219 |
+ |
|
220 |
|
try { |
221 |
|
new Phaser().bulkRegister(1 << 16); |
222 |
|
shouldThrow(); |
223 |
|
} catch (IllegalStateException success) {} |
224 |
+ |
|
225 |
+ |
try { |
226 |
+ |
new Phaser(2).bulkRegister((1 << 16) - 2); |
227 |
+ |
shouldThrow(); |
228 |
+ |
} catch (IllegalStateException success) {} |
229 |
|
} |
230 |
|
|
231 |
|
/** |
242 |
|
} |
243 |
|
|
244 |
|
/** |
245 |
< |
* Arrive() on a registered phaser increments phase. |
245 |
> |
* arrive() on a registered phaser increments phase. |
246 |
|
*/ |
247 |
|
public void testArrive1() { |
248 |
|
Phaser phaser = new Phaser(1); |
249 |
< |
phaser.arrive(); |
250 |
< |
assertEquals(1, phaser.getPhase()); |
249 |
> |
assertState(phaser, 0, 1, 1); |
250 |
> |
assertEquals(0, phaser.arrive()); |
251 |
> |
assertState(phaser, 1, 1, 1); |
252 |
|
} |
253 |
|
|
254 |
|
/** |
255 |
|
* arriveAndDeregister does not wait for others to arrive at barrier |
256 |
|
*/ |
257 |
< |
public void testArrive2() throws InterruptedException { |
257 |
> |
public void testArriveAndDeregister() throws InterruptedException { |
258 |
|
final Phaser phaser = new Phaser(1); |
259 |
< |
phaser.register(); |
259 |
> |
for (int i = 0; i < 10; i++) { |
260 |
> |
assertState(phaser, 0, 1, 1); |
261 |
> |
assertEquals(0, phaser.register()); |
262 |
> |
assertState(phaser, 0, 2, 2); |
263 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
264 |
> |
assertState(phaser, 0, 1, 1); |
265 |
> |
} |
266 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
267 |
> |
assertTerminated(phaser, 1); |
268 |
> |
} |
269 |
> |
|
270 |
> |
/** |
271 |
> |
* arriveAndDeregister does not wait for others to arrive at barrier |
272 |
> |
*/ |
273 |
> |
public void testArrive2() throws InterruptedException { |
274 |
> |
final Phaser phaser = new Phaser(); |
275 |
> |
assertEquals(0, phaser.register()); |
276 |
|
List<Thread> threads = new ArrayList<Thread>(); |
277 |
< |
for (int i = 0; i < 10; i++) |
278 |
< |
phaser.register(); |
277 |
> |
for (int i = 0; i < 10; i++) { |
278 |
> |
assertEquals(0, phaser.register()); |
279 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
280 |
|
public void realRun() throws InterruptedException { |
281 |
< |
Thread.sleep(SMALL_DELAY_MS); |
199 |
< |
phaser.arriveAndDeregister(); |
281 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
282 |
|
}})); |
283 |
+ |
} |
284 |
|
|
202 |
– |
phaser.arrive(); |
203 |
– |
assertTrue(threads.get(0).isAlive()); |
204 |
– |
assertFalse(phaser.isTerminated()); |
285 |
|
for (Thread thread : threads) |
286 |
< |
thread.join(); |
286 |
> |
awaitTermination(thread, LONG_DELAY_MS); |
287 |
> |
assertState(phaser, 0, 1, 1); |
288 |
> |
assertEquals(0, phaser.arrive()); |
289 |
> |
assertState(phaser, 1, 1, 1); |
290 |
|
} |
291 |
|
|
292 |
|
/** |
295 |
|
public void testArrive3() { |
296 |
|
Phaser phaser = new Phaser(1); |
297 |
|
phaser.forceTermination(); |
298 |
+ |
assertTerminated(phaser, 0, 1); |
299 |
+ |
assertEquals(0, phaser.getPhase() + Integer.MIN_VALUE); |
300 |
|
assertTrue(phaser.arrive() < 0); |
301 |
+ |
assertTrue(phaser.register() < 0); |
302 |
+ |
assertTrue(phaser.arriveAndDeregister() < 0); |
303 |
+ |
assertTrue(phaser.awaitAdvance(1) < 0); |
304 |
+ |
assertTrue(phaser.getPhase() < 0); |
305 |
|
} |
306 |
|
|
307 |
|
/** |
317 |
|
} |
318 |
|
|
319 |
|
/** |
320 |
< |
* arriveAndDeregister deregisters reduces the number of arrived parties |
320 |
> |
* arriveAndDeregister reduces the number of arrived parties |
321 |
|
*/ |
322 |
< |
public void testArriveAndDergeister2() { |
322 |
> |
public void testArriveAndDeregister2() { |
323 |
|
final Phaser phaser = new Phaser(1); |
324 |
< |
phaser.register(); |
325 |
< |
phaser.arrive(); |
326 |
< |
int p = phaser.getArrivedParties(); |
327 |
< |
assertTrue(p == 1); |
328 |
< |
phaser.arriveAndDeregister(); |
240 |
< |
assertTrue(phaser.getArrivedParties() < p); |
324 |
> |
assertEquals(0, phaser.register()); |
325 |
> |
assertEquals(0, phaser.arrive()); |
326 |
> |
assertState(phaser, 0, 2, 1); |
327 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
328 |
> |
assertState(phaser, 1, 1, 1); |
329 |
|
} |
330 |
|
|
331 |
|
/** |
332 |
< |
* arriveAndDeregister arrives to the barrier on a phaser with a parent and |
332 |
> |
* arriveAndDeregister arrives at the barrier on a phaser with a parent and |
333 |
|
* when a deregistration occurs and causes the phaser to have zero parties |
334 |
|
* its parent will be deregistered as well |
335 |
|
*/ |
336 |
< |
public void testArriveAndDeregsiter3() { |
336 |
> |
public void testArriveAndDeregister3() { |
337 |
|
Phaser parent = new Phaser(); |
338 |
< |
Phaser root = new Phaser(parent); |
339 |
< |
root.register(); |
340 |
< |
assertTrue(parent.getUnarrivedParties() > 0); |
341 |
< |
assertTrue(root.getUnarrivedParties() > 0); |
342 |
< |
root.arriveAndDeregister(); |
343 |
< |
assertTrue(parent.getUnarrivedParties() == 0); |
344 |
< |
assertTrue(root.getUnarrivedParties() == 0); |
345 |
< |
assertTrue(root.isTerminated() && parent.isTerminated()); |
338 |
> |
Phaser child = new Phaser(parent); |
339 |
> |
assertState(child, 0, 0, 0); |
340 |
> |
assertState(parent, 0, 0, 0); |
341 |
> |
assertEquals(0, child.register()); |
342 |
> |
assertState(child, 0, 1, 1); |
343 |
> |
assertState(parent, 0, 1, 1); |
344 |
> |
assertEquals(0, child.arriveAndDeregister()); |
345 |
> |
assertTerminated(child, 1); |
346 |
> |
assertTerminated(parent, 1); |
347 |
|
} |
348 |
|
|
349 |
|
/** |
350 |
|
* arriveAndDeregister deregisters one party from its parent when |
351 |
< |
* the number of parties of root is zero after deregistration |
351 |
> |
* the number of parties of child is zero after deregistration |
352 |
|
*/ |
353 |
< |
public void testArriveAndDeregsiter4() { |
353 |
> |
public void testArriveAndDeregister4() { |
354 |
|
Phaser parent = new Phaser(); |
355 |
< |
Phaser root = new Phaser(parent); |
356 |
< |
parent.register(); |
357 |
< |
root.register(); |
358 |
< |
int parentParties = parent.getUnarrivedParties(); |
359 |
< |
root.arriveAndDeregister(); |
360 |
< |
assertEquals(parentParties - 1, parent.getUnarrivedParties()); |
355 |
> |
Phaser child = new Phaser(parent); |
356 |
> |
assertEquals(0, parent.register()); |
357 |
> |
assertEquals(0, child.register()); |
358 |
> |
assertState(child, 0, 1, 1); |
359 |
> |
assertState(parent, 0, 2, 2); |
360 |
> |
assertEquals(0, child.arriveAndDeregister()); |
361 |
> |
assertState(child, 0, 0, 0); |
362 |
> |
assertState(parent, 0, 1, 1); |
363 |
|
} |
364 |
|
|
365 |
|
/** |
367 |
|
* the number of parties of root is nonzero after deregistration. |
368 |
|
*/ |
369 |
|
public void testArriveAndDeregister5() { |
370 |
< |
Phaser parent = new Phaser(); |
370 |
> |
Phaser root = new Phaser(); |
371 |
> |
Phaser parent = new Phaser(root); |
372 |
|
Phaser child = new Phaser(parent); |
373 |
< |
Phaser root = new Phaser(child); |
374 |
< |
assertTrue(parent.getUnarrivedParties() > 0); |
375 |
< |
assertTrue(child.getUnarrivedParties() > 0); |
376 |
< |
root.register(); |
377 |
< |
root.arriveAndDeregister(); |
378 |
< |
assertTrue(parent.getUnarrivedParties() == 0); |
379 |
< |
assertTrue(child.getUnarrivedParties() == 0); |
380 |
< |
assertTrue(root.isTerminated()); |
373 |
> |
assertState(root, 0, 0, 0); |
374 |
> |
assertState(parent, 0, 0, 0); |
375 |
> |
assertState(child, 0, 0, 0); |
376 |
> |
assertEquals(0, child.register()); |
377 |
> |
assertState(root, 0, 1, 1); |
378 |
> |
assertState(parent, 0, 1, 1); |
379 |
> |
assertState(child, 0, 1, 1); |
380 |
> |
assertEquals(0, child.arriveAndDeregister()); |
381 |
> |
assertTerminated(child, 1); |
382 |
> |
assertTerminated(parent, 1); |
383 |
> |
assertTerminated(root, 1); |
384 |
|
} |
385 |
|
|
386 |
|
/** |
391 |
|
final Phaser phaser = new Phaser(2); |
392 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
393 |
|
public void realRun() { |
394 |
< |
sleepTillInterrupted(SHORT_DELAY_MS); |
300 |
< |
phaser.arrive(); |
394 |
> |
assertEquals(0, phaser.arrive()); |
395 |
|
}}); |
396 |
< |
phaser.arriveAndAwaitAdvance(); |
397 |
< |
int phase = phaser.arriveAndDeregister(); |
398 |
< |
assertEquals(phase, phaser.getPhase()); |
399 |
< |
t.join(); |
396 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
397 |
> |
assertState(phaser, 1, 2, 2); |
398 |
> |
assertEquals(1, phaser.arriveAndDeregister()); |
399 |
> |
assertState(phaser, 1, 1, 1); |
400 |
> |
assertEquals(1, phaser.arriveAndDeregister()); |
401 |
> |
assertTerminated(phaser, 2); |
402 |
> |
awaitTermination(t, SHORT_DELAY_MS); |
403 |
|
} |
404 |
|
|
405 |
|
/** |
407 |
|
*/ |
408 |
|
public void testAwaitAdvance1() { |
409 |
|
final Phaser phaser = new Phaser(1); |
410 |
< |
phaser.awaitAdvance(phaser.arrive()); |
410 |
> |
assertEquals(0, phaser.arrive()); |
411 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
412 |
|
} |
413 |
|
|
414 |
|
/** |
417 |
|
*/ |
418 |
|
public void testAwaitAdvance2() { |
419 |
|
Phaser phaser = new Phaser(); |
420 |
< |
phaser.awaitAdvance(-1); |
420 |
> |
assertTrue(phaser.awaitAdvance(-1) < 0); |
421 |
> |
assertState(phaser, 0, 0, 0); |
422 |
|
} |
423 |
|
|
424 |
|
/** |
425 |
< |
* awaitAdvance while waiting does not abort on interrupt. |
425 |
> |
* awaitAdvance continues waiting if interrupted before waiting |
426 |
|
*/ |
427 |
< |
public void testAwaitAdvance3() throws InterruptedException { |
427 |
> |
public void testAwaitAdvanceAfterInterrupt() throws InterruptedException { |
428 |
|
final Phaser phaser = new Phaser(); |
429 |
< |
phaser.register(); |
429 |
> |
assertEquals(0, phaser.register()); |
430 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
431 |
|
|
432 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
433 |
|
public void realRun() throws InterruptedException { |
434 |
< |
phaser.register(); |
435 |
< |
sleepTillInterrupted(LONG_DELAY_MS); |
436 |
< |
phaser.awaitAdvance(phaser.arrive()); |
434 |
> |
Thread.currentThread().interrupt(); |
435 |
> |
assertEquals(0, phaser.register()); |
436 |
> |
assertEquals(0, phaser.arrive()); |
437 |
> |
threadStarted.countDown(); |
438 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
439 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
440 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
441 |
|
}}); |
442 |
< |
Thread.sleep(SMALL_DELAY_MS); |
442 |
> |
|
443 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
444 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
445 |
> |
assertEquals(0, phaser.arrive()); |
446 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
447 |
> |
|
448 |
> |
Thread.currentThread().interrupt(); |
449 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
450 |
> |
assertTrue(Thread.interrupted()); |
451 |
> |
} |
452 |
> |
|
453 |
> |
/** |
454 |
> |
* awaitAdvance continues waiting if interrupted while waiting |
455 |
> |
*/ |
456 |
> |
public void testAwaitAdvanceBeforeInterrupt() throws InterruptedException { |
457 |
> |
final Phaser phaser = new Phaser(); |
458 |
> |
assertEquals(0, phaser.register()); |
459 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
460 |
> |
|
461 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
462 |
> |
public void realRun() throws InterruptedException { |
463 |
> |
assertEquals(0, phaser.register()); |
464 |
> |
assertEquals(0, phaser.arrive()); |
465 |
> |
threadStarted.countDown(); |
466 |
> |
assertFalse(Thread.currentThread().isInterrupted()); |
467 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
468 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
469 |
> |
}}); |
470 |
> |
|
471 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
472 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
473 |
|
t.interrupt(); |
474 |
< |
Thread.sleep(SMALL_DELAY_MS); |
475 |
< |
phaser.arrive(); |
476 |
< |
assertFalse(t.isInterrupted()); |
477 |
< |
t.join(); |
474 |
> |
assertEquals(0, phaser.arrive()); |
475 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
476 |
> |
|
477 |
> |
Thread.currentThread().interrupt(); |
478 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
479 |
> |
assertTrue(Thread.interrupted()); |
480 |
> |
} |
481 |
> |
|
482 |
> |
/** |
483 |
> |
* arriveAndAwaitAdvance continues waiting if interrupted before waiting |
484 |
> |
*/ |
485 |
> |
public void testArriveAndAwaitAdvanceAfterInterrupt() |
486 |
> |
throws InterruptedException { |
487 |
> |
final Phaser phaser = new Phaser(); |
488 |
> |
assertEquals(0, phaser.register()); |
489 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
490 |
> |
|
491 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
492 |
> |
public void realRun() throws InterruptedException { |
493 |
> |
Thread.currentThread().interrupt(); |
494 |
> |
assertEquals(0, phaser.register()); |
495 |
> |
threadStarted.countDown(); |
496 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
497 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
498 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
499 |
> |
}}); |
500 |
> |
|
501 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
502 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
503 |
> |
Thread.currentThread().interrupt(); |
504 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
505 |
> |
assertTrue(Thread.interrupted()); |
506 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
507 |
> |
} |
508 |
> |
|
509 |
> |
/** |
510 |
> |
* arriveAndAwaitAdvance continues waiting if interrupted while waiting |
511 |
> |
*/ |
512 |
> |
public void testArriveAndAwaitAdvanceBeforeInterrupt() |
513 |
> |
throws InterruptedException { |
514 |
> |
final Phaser phaser = new Phaser(); |
515 |
> |
assertEquals(0, phaser.register()); |
516 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
517 |
> |
|
518 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
519 |
> |
public void realRun() throws InterruptedException { |
520 |
> |
assertEquals(0, phaser.register()); |
521 |
> |
threadStarted.countDown(); |
522 |
> |
assertFalse(Thread.currentThread().isInterrupted()); |
523 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
524 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
525 |
> |
}}); |
526 |
> |
|
527 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
528 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
529 |
> |
t.interrupt(); |
530 |
> |
Thread.currentThread().interrupt(); |
531 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
532 |
> |
assertTrue(Thread.interrupted()); |
533 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
534 |
|
} |
535 |
|
|
536 |
|
/** |
539 |
|
*/ |
540 |
|
public void testAwaitAdvance4() throws InterruptedException { |
541 |
|
final Phaser phaser = new Phaser(4); |
542 |
< |
final AtomicInteger phaseCount = new AtomicInteger(0); |
542 |
> |
final AtomicInteger count = new AtomicInteger(0); |
543 |
|
List<Thread> threads = new ArrayList<Thread>(); |
544 |
< |
for (int i = 0; i < 4; i++) { |
544 |
> |
for (int i = 0; i < 4; i++) |
545 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
546 |
|
public void realRun() { |
547 |
< |
int phase = phaser.arrive(); |
548 |
< |
phaseCount.incrementAndGet(); |
549 |
< |
sleepTillInterrupted(SMALL_DELAY_MS); |
550 |
< |
phaser.awaitAdvance(phase); |
551 |
< |
threadAssertTrue(phaseCount.get() == 4); |
552 |
< |
}})); |
553 |
< |
} |
547 |
> |
for (int k = 0; k < 3; k++) { |
548 |
> |
assertEquals(2*k+1, phaser.arriveAndAwaitAdvance()); |
549 |
> |
count.incrementAndGet(); |
550 |
> |
assertEquals(2*k+1, phaser.arrive()); |
551 |
> |
assertEquals(2*k+2, phaser.awaitAdvance(2*k+1)); |
552 |
> |
assertEquals(count.get(), 4*(k+1)); |
553 |
> |
}}})); |
554 |
> |
|
555 |
|
for (Thread thread : threads) |
556 |
< |
thread.join(); |
556 |
> |
awaitTermination(thread, MEDIUM_DELAY_MS); |
557 |
|
} |
558 |
|
|
559 |
|
/** |
561 |
|
*/ |
562 |
|
public void testAwaitAdvance5() throws InterruptedException { |
563 |
|
final Phaser phaser = new Phaser(1); |
564 |
< |
int phase = phaser.awaitAdvance(phaser.arrive()); |
565 |
< |
assertEquals(phase, phaser.getPhase()); |
566 |
< |
phaser.register(); |
564 |
> |
assertEquals(1, phaser.awaitAdvance(phaser.arrive())); |
565 |
> |
assertEquals(1, phaser.getPhase()); |
566 |
> |
assertEquals(1, phaser.register()); |
567 |
|
List<Thread> threads = new ArrayList<Thread>(); |
568 |
|
for (int i = 0; i < 8; i++) { |
569 |
+ |
final CountDownLatch latch = new CountDownLatch(1); |
570 |
+ |
final boolean goesFirst = ((i & 1) == 0); |
571 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
572 |
< |
public void realRun() { |
573 |
< |
sleepTillInterrupted(SHORT_DELAY_MS); |
572 |
> |
public void realRun() throws InterruptedException { |
573 |
> |
if (goesFirst) |
574 |
> |
latch.countDown(); |
575 |
> |
else |
576 |
> |
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
577 |
|
phaser.arrive(); |
578 |
|
}})); |
579 |
< |
phase = phaser.awaitAdvance(phaser.arrive()); |
580 |
< |
threadAssertEquals(phase, phaser.getPhase()); |
579 |
> |
if (goesFirst) |
580 |
> |
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
581 |
> |
else |
582 |
> |
latch.countDown(); |
583 |
> |
assertEquals(i + 2, phaser.awaitAdvance(phaser.arrive())); |
584 |
> |
assertEquals(i + 2, phaser.getPhase()); |
585 |
|
} |
586 |
|
for (Thread thread : threads) |
587 |
< |
thread.join(); |
587 |
> |
awaitTermination(thread, SMALL_DELAY_MS); |
588 |
> |
} |
589 |
> |
|
590 |
> |
/** |
591 |
> |
* awaitAdvance returns the current phase in child phasers |
592 |
> |
*/ |
593 |
> |
public void testAwaitAdvanceTieredPhaser() throws Exception { |
594 |
> |
final Phaser parent = new Phaser(); |
595 |
> |
final List<Phaser> zeroPartyChildren = new ArrayList<Phaser>(3); |
596 |
> |
final List<Phaser> onePartyChildren = new ArrayList<Phaser>(3); |
597 |
> |
for (int i = 0; i < 3; i++) { |
598 |
> |
zeroPartyChildren.add(new Phaser(parent, 0)); |
599 |
> |
onePartyChildren.add(new Phaser(parent, 1)); |
600 |
> |
} |
601 |
> |
final List<Phaser> phasers = new ArrayList<Phaser>(); |
602 |
> |
phasers.addAll(zeroPartyChildren); |
603 |
> |
phasers.addAll(onePartyChildren); |
604 |
> |
phasers.add(parent); |
605 |
> |
for (Phaser phaser : phasers) { |
606 |
> |
assertEquals(-42, phaser.awaitAdvance(-42)); |
607 |
> |
assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42)); |
608 |
> |
assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, SMALL_DELAY_MS, MILLISECONDS)); |
609 |
> |
} |
610 |
> |
|
611 |
> |
for (Phaser child : onePartyChildren) |
612 |
> |
assertEquals(0, child.arrive()); |
613 |
> |
for (Phaser phaser : phasers) { |
614 |
> |
assertEquals(-42, phaser.awaitAdvance(-42)); |
615 |
> |
assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42)); |
616 |
> |
assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, SMALL_DELAY_MS, MILLISECONDS)); |
617 |
> |
assertEquals(1, phaser.awaitAdvance(0)); |
618 |
> |
assertEquals(1, phaser.awaitAdvanceInterruptibly(0)); |
619 |
> |
assertEquals(1, phaser.awaitAdvanceInterruptibly(0, SMALL_DELAY_MS, MILLISECONDS)); |
620 |
> |
} |
621 |
> |
|
622 |
> |
for (Phaser child : onePartyChildren) |
623 |
> |
assertEquals(1, child.arrive()); |
624 |
> |
for (Phaser phaser : phasers) { |
625 |
> |
assertEquals(-42, phaser.awaitAdvance(-42)); |
626 |
> |
assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42)); |
627 |
> |
assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, SMALL_DELAY_MS, MILLISECONDS)); |
628 |
> |
assertEquals(2, phaser.awaitAdvance(0)); |
629 |
> |
assertEquals(2, phaser.awaitAdvanceInterruptibly(0)); |
630 |
> |
assertEquals(2, phaser.awaitAdvanceInterruptibly(0, SMALL_DELAY_MS, MILLISECONDS)); |
631 |
> |
assertEquals(2, phaser.awaitAdvance(1)); |
632 |
> |
assertEquals(2, phaser.awaitAdvanceInterruptibly(1)); |
633 |
> |
assertEquals(2, phaser.awaitAdvanceInterruptibly(1, SMALL_DELAY_MS, MILLISECONDS)); |
634 |
> |
} |
635 |
|
} |
636 |
|
|
637 |
|
/** |
639 |
|
*/ |
640 |
|
public void testAwaitAdvance6() throws InterruptedException { |
641 |
|
final Phaser phaser = new Phaser(3); |
642 |
< |
/* |
643 |
< |
* Start new thread. This thread waits a small amount of time |
644 |
< |
* and waits for the other two parties to arrive. The party |
645 |
< |
* in the main thread arrives quickly so at best this thread |
646 |
< |
* waits for the second thread's party to arrive |
647 |
< |
*/ |
648 |
< |
Thread t1 = newStartedThread(new CheckedRunnable() { |
649 |
< |
public void realRun() { |
650 |
< |
sleepTillInterrupted(SMALL_DELAY_MS); |
651 |
< |
int phase = phaser.awaitAdvance(phaser.arrive()); |
652 |
< |
/* |
653 |
< |
* This point is reached when force termination is called in which phase = -1 |
654 |
< |
*/ |
655 |
< |
threadAssertTrue(phase < 0); |
656 |
< |
threadAssertTrue(phaser.isTerminated()); |
657 |
< |
}}); |
411 |
< |
/* |
412 |
< |
* This thread will cause the first thread run to wait, in doing so |
413 |
< |
* the main thread will force termination in which the first thread |
414 |
< |
* should exit peacefully as this one |
415 |
< |
*/ |
416 |
< |
Thread t2 = newStartedThread(new CheckedRunnable() { |
417 |
< |
public void realRun() { |
418 |
< |
sleepTillInterrupted(MEDIUM_DELAY_MS); |
419 |
< |
int p1 = phaser.arrive(); |
420 |
< |
int phase = phaser.awaitAdvance(p1); |
421 |
< |
threadAssertTrue(phase < 0); |
422 |
< |
threadAssertTrue(phaser.isTerminated()); |
423 |
< |
}}); |
424 |
< |
|
425 |
< |
phaser.arrive(); |
642 |
> |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
643 |
> |
final List<Thread> threads = new ArrayList<Thread>(); |
644 |
> |
for (int i = 0; i < 2; i++) { |
645 |
> |
Runnable r = new CheckedRunnable() { |
646 |
> |
public void realRun() { |
647 |
> |
assertEquals(0, phaser.arrive()); |
648 |
> |
threadsStarted.countDown(); |
649 |
> |
assertTrue(phaser.awaitAdvance(0) < 0); |
650 |
> |
assertTrue(phaser.isTerminated()); |
651 |
> |
assertTrue(phaser.getPhase() < 0); |
652 |
> |
assertEquals(0, phaser.getPhase() + Integer.MIN_VALUE); |
653 |
> |
assertEquals(3, phaser.getRegisteredParties()); |
654 |
> |
}}; |
655 |
> |
threads.add(newStartedThread(r)); |
656 |
> |
} |
657 |
> |
threadsStarted.await(); |
658 |
|
phaser.forceTermination(); |
659 |
< |
t1.join(); |
660 |
< |
t2.join(); |
659 |
> |
assertTrue(phaser.isTerminated()); |
660 |
> |
assertEquals(0, phaser.getPhase() + Integer.MIN_VALUE); |
661 |
> |
for (Thread thread : threads) |
662 |
> |
awaitTermination(thread, SMALL_DELAY_MS); |
663 |
> |
assertEquals(3, phaser.getRegisteredParties()); |
664 |
|
} |
665 |
|
|
666 |
|
/** |
676 |
|
} |
677 |
|
|
678 |
|
/** |
444 |
– |
* Interrupted arriveAndAwaitAdvance does not throw InterruptedException |
445 |
– |
*/ |
446 |
– |
public void testArriveAndAwaitAdvance2() throws InterruptedException { |
447 |
– |
final Phaser phaser = new Phaser(2); |
448 |
– |
Thread th = newStartedThread(new CheckedRunnable() { |
449 |
– |
public void realRun() { |
450 |
– |
phaser.arriveAndAwaitAdvance(); |
451 |
– |
}}); |
452 |
– |
|
453 |
– |
Thread.sleep(SMALL_DELAY_MS); |
454 |
– |
th.interrupt(); |
455 |
– |
Thread.sleep(SMALL_DELAY_MS); |
456 |
– |
phaser.arrive(); |
457 |
– |
assertFalse(th.isInterrupted()); |
458 |
– |
th.join(); |
459 |
– |
} |
460 |
– |
|
461 |
– |
/** |
679 |
|
* arriveAndAwaitAdvance waits for all threads to arrive, the |
680 |
|
* number of arrived parties is the same number that is accounted |
681 |
|
* for when the main thread awaitsAdvance |
682 |
|
*/ |
683 |
|
public void testArriveAndAwaitAdvance3() throws InterruptedException { |
684 |
|
final Phaser phaser = new Phaser(1); |
685 |
< |
final AtomicInteger arrivingCount = new AtomicInteger(0); |
685 |
> |
final int THREADS = 3; |
686 |
> |
final CountDownLatch threadsStarted = new CountDownLatch(THREADS); |
687 |
|
final List<Thread> threads = new ArrayList<Thread>(); |
688 |
< |
for (int i = 0; i < 6; i++) { |
688 |
> |
for (int i = 0; i < THREADS; i++) |
689 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
690 |
|
public void realRun() throws InterruptedException { |
691 |
< |
phaser.register(); |
692 |
< |
sleepTillInterrupted(SHORT_DELAY_MS); |
693 |
< |
arrivingCount.getAndIncrement(); |
476 |
< |
phaser.arrive(); |
691 |
> |
assertEquals(0, phaser.register()); |
692 |
> |
threadsStarted.countDown(); |
693 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
694 |
|
}})); |
695 |
< |
} |
696 |
< |
int phaseNumber = phaser.arriveAndAwaitAdvance(); |
697 |
< |
arrivingCount.incrementAndGet(); |
698 |
< |
//the + 1 adds to expectedArrive to account for the main threads arrival |
699 |
< |
int expectedArrived = phaseNumber > 0 ? phaseNumber * six + 1 : phaser.getArrivedParties() + 1; |
700 |
< |
threadAssertEquals(expectedArrived, arrivingCount.get()); |
695 |
> |
|
696 |
> |
assertTrue(threadsStarted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
697 |
> |
long t0 = System.nanoTime(); |
698 |
> |
while (phaser.getArrivedParties() < THREADS) |
699 |
> |
Thread.yield(); |
700 |
> |
assertEquals(THREADS, phaser.getArrivedParties()); |
701 |
> |
assertTrue(NANOSECONDS.toMillis(System.nanoTime() - t0) < SMALL_DELAY_MS); |
702 |
> |
for (Thread thread : threads) |
703 |
> |
assertTrue(thread.isAlive()); |
704 |
> |
assertState(phaser, 0, THREADS + 1, 1); |
705 |
> |
phaser.arriveAndAwaitAdvance(); |
706 |
|
for (Thread thread : threads) |
707 |
< |
thread.join(); |
707 |
> |
awaitTermination(thread, SMALL_DELAY_MS); |
708 |
> |
assertState(phaser, 1, THREADS + 1, THREADS + 1); |
709 |
|
} |
710 |
|
|
711 |
|
} |