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 |
+ |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
14 |
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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 |
66 |
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public void testConstructor2() { |
67 |
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try { |
68 |
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new Phaser(-1); |
69 |
< |
this.shouldThrow(); |
70 |
< |
} catch (IllegalArgumentException success) { |
45 |
< |
} |
69 |
> |
shouldThrow(); |
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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/** |
114 |
< |
* Registering any more then 65536 parties causes IllegalStateExceptiom |
114 |
> |
* Registering more than 65536 parties causes IllegalStateException |
115 |
|
*/ |
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 |
< |
} catch (Exception ex) { |
105 |
< |
threadUnexpectedException(ex); |
106 |
< |
} |
130 |
> |
} catch (IllegalStateException success) {} |
131 |
|
} |
132 |
|
|
133 |
|
/** |
137 |
|
public void testRegister3() { |
138 |
|
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()); |
130 |
< |
} |
131 |
< |
|
132 |
< |
public void testRegister5() { |
133 |
< |
Phaser phaser = new Phaser(); |
134 |
< |
phaser.register(); |
135 |
< |
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 |
|
/** |
158 |
|
* Invoking bulkRegister with a negative parameter throws an |
159 |
< |
* IllegalArgumentExceptiom |
159 |
> |
* IllegalArgumentException |
160 |
|
*/ |
161 |
|
public void testBulkRegister1() { |
162 |
|
try { |
163 |
|
new Phaser().bulkRegister(-1); |
164 |
|
shouldThrow(); |
165 |
< |
} catch (IllegalArgumentException success) { |
147 |
< |
} |
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 |
|
/** |
179 |
< |
* Registering with a number of parties greater then or equal to 1<<16 |
180 |
< |
* throws IllegalStateExceptiom. |
179 |
> |
* Registering with a number of parties greater than or equal to 1<<16 |
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 |
< |
* arrive does not wait for others to arrive at barrier |
220 |
> |
* arriveAndDeregister does not wait for others to arrive at barrier |
221 |
|
*/ |
222 |
< |
public void testArrive2() { |
222 |
> |
public void testArriveAndDeregister() throws InterruptedException { |
223 |
|
final Phaser phaser = new Phaser(1); |
224 |
< |
phaser.register(); |
225 |
< |
Thread thread = null; |
226 |
< |
for (final Runnable r : getRunnables(10, SHORT_DELAY_MS)) { |
227 |
< |
phaser.register(); |
228 |
< |
thread = new Thread() { |
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 |
< |
public void run() { |
236 |
< |
r.run(); |
237 |
< |
phaser.arriveAndDeregister(); |
238 |
< |
} |
239 |
< |
}; |
240 |
< |
thread.start(); |
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 |
> |
assertEquals(0, phaser.register()); |
244 |
> |
threads.add(newStartedThread(new CheckedRunnable() { |
245 |
> |
public void realRun() throws InterruptedException { |
246 |
> |
assertEquals(0, phaser.arriveAndDeregister()); |
247 |
> |
}})); |
248 |
|
} |
249 |
|
|
250 |
< |
phaser.arrive(); |
251 |
< |
assertTrue(thread.isAlive()); |
252 |
< |
assertFalse(phaser.isTerminated()); |
250 |
> |
for (Thread thread : threads) |
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 |
|
/** |
258 |
< |
* arrive() returns a negative number if the Phaser is termindated |
258 |
> |
* arrive() returns a negative number if the Phaser is terminated |
259 |
|
*/ |
260 |
|
public void testArrive3() { |
261 |
|
Phaser phaser = new Phaser(1); |
262 |
|
phaser.forceTermination(); |
263 |
+ |
assertTerminated(phaser, 1, 1); |
264 |
|
assertTrue(phaser.arrive() < 0); |
265 |
< |
|
265 |
> |
assertTrue(phaser.register() < 0); |
266 |
> |
assertTrue(phaser.arriveAndDeregister() < 0); |
267 |
> |
assertTrue(phaser.awaitAdvance(1) < 0); |
268 |
> |
assertTrue(phaser.getPhase() < 0); |
269 |
|
} |
270 |
|
|
271 |
|
/** |
272 |
|
* arriveAndDeregister() throws IllegalStateException if number of |
273 |
< |
* registered or unnarived parties would become negative |
273 |
> |
* registered or unarrived parties would become negative |
274 |
|
*/ |
275 |
|
public void testArriveAndDeregister1() { |
276 |
|
try { |
277 |
|
Phaser phaser = new Phaser(); |
278 |
|
phaser.arriveAndDeregister(); |
279 |
|
shouldThrow(); |
280 |
< |
|
238 |
< |
} catch (IllegalStateException success) { |
239 |
< |
} |
280 |
> |
} catch (IllegalStateException success) {} |
281 |
|
} |
282 |
|
|
283 |
|
/** |
284 |
< |
* arriveAndDeregister derigisters 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(); |
252 |
< |
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 |
|
/** |
351 |
|
* arriveAndDeregister returns the phase in which it leaves the |
352 |
|
* phaser in after deregistration |
353 |
|
*/ |
354 |
< |
public void testArriveAndDeregister6() { |
354 |
> |
public void testArriveAndDeregister6() throws InterruptedException { |
355 |
|
final Phaser phaser = new Phaser(2); |
356 |
< |
new Thread() { |
357 |
< |
|
358 |
< |
public void run() { |
359 |
< |
getRunnable(SHORT_DELAY_MS).run(); |
360 |
< |
phaser.arrive(); |
361 |
< |
} |
362 |
< |
}.start(); |
363 |
< |
phaser.arriveAndAwaitAdvance(); |
364 |
< |
int phase = phaser.arriveAndDeregister(); |
365 |
< |
assertEquals(phase, phaser.getPhase()); |
356 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
357 |
> |
public void realRun() { |
358 |
> |
assertEquals(0, phaser.arrive()); |
359 |
> |
}}); |
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 |
|
/** |
380 |
|
* phaser |
381 |
|
*/ |
382 |
|
public void testAwaitAdvance2() { |
383 |
< |
try { |
384 |
< |
Phaser phaser = new Phaser(); |
385 |
< |
phaser.awaitAdvance(-1); |
337 |
< |
} catch (Exception failure) { |
338 |
< |
this.unexpectedException(); |
339 |
< |
} |
383 |
> |
Phaser phaser = new Phaser(); |
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 |
390 |
|
*/ |
391 |
< |
public void testAwaitAdvance3() { |
391 |
> |
public void testAwaitAdvance3() throws InterruptedException { |
392 |
|
final Phaser phaser = new Phaser(); |
393 |
< |
Thread th1 = new Thread() { |
394 |
< |
|
349 |
< |
public void run() { |
350 |
< |
try { |
351 |
< |
phaser.register(); |
352 |
< |
getRunnable(LONG_DELAY_MS).run(); |
353 |
< |
phaser.awaitAdvance(phaser.arrive()); |
354 |
< |
} catch (Exception failure) { |
355 |
< |
threadUnexpectedException(failure); |
356 |
< |
} |
393 |
> |
assertEquals(0, phaser.register()); |
394 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
395 |
|
|
396 |
< |
} |
397 |
< |
}; |
398 |
< |
phaser.register(); |
399 |
< |
th1.start(); |
400 |
< |
try { |
401 |
< |
Thread.sleep(SHORT_DELAY_MS); |
402 |
< |
th1.interrupt(); |
403 |
< |
Thread.sleep(LONG_DELAY_MS); |
404 |
< |
phaser.arrive(); |
405 |
< |
} catch (Exception failure) { |
406 |
< |
unexpectedException(); |
369 |
< |
} |
370 |
< |
assertFalse(th1.isInterrupted()); |
396 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
397 |
> |
public void realRun() throws InterruptedException { |
398 |
> |
assertEquals(0, phaser.register()); |
399 |
> |
threadStarted.countDown(); |
400 |
> |
assertEquals(1, phaser.awaitAdvance(phaser.arrive())); |
401 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
402 |
> |
}}); |
403 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
404 |
> |
t.interrupt(); |
405 |
> |
assertEquals(0, phaser.arrive()); |
406 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
407 |
|
} |
408 |
|
|
409 |
|
/** |
410 |
|
* awaitAdvance atomically waits for all parties within the same phase to |
411 |
|
* complete before continuing |
412 |
|
*/ |
413 |
< |
public void testAwaitAdvance4() { |
414 |
< |
final Phaser phaser = new Phaser(four); |
415 |
< |
final AtomicInteger phaseCount = new AtomicInteger(0); |
416 |
< |
for (int i = 0; i < four; i++) { |
417 |
< |
new Thread() { |
418 |
< |
|
419 |
< |
public void run() { |
420 |
< |
int phase = phaser.arrive(); |
421 |
< |
phaseCount.incrementAndGet(); |
422 |
< |
getRunnable(LONG_DELAY_MS).run(); |
423 |
< |
phaser.awaitAdvance(phase); |
424 |
< |
assertTrue(phaseCount.get() == four); |
425 |
< |
} |
426 |
< |
}.start(); |
427 |
< |
} |
413 |
> |
public void testAwaitAdvance4() throws InterruptedException { |
414 |
> |
final Phaser phaser = new Phaser(4); |
415 |
> |
final AtomicInteger count = new AtomicInteger(0); |
416 |
> |
List<Thread> threads = new ArrayList<Thread>(); |
417 |
> |
for (int i = 0; i < 4; i++) |
418 |
> |
threads.add(newStartedThread(new CheckedRunnable() { |
419 |
> |
public void realRun() { |
420 |
> |
for (int k = 0; k < 3; k++) { |
421 |
> |
assertEquals(2*k+1, phaser.arriveAndAwaitAdvance()); |
422 |
> |
count.incrementAndGet(); |
423 |
> |
assertEquals(2*k+1, phaser.arrive()); |
424 |
> |
assertEquals(2*k+2, phaser.awaitAdvance(2*k+1)); |
425 |
> |
assertEquals(count.get(), 4*(k+1)); |
426 |
> |
}}})); |
427 |
> |
|
428 |
> |
for (Thread thread : threads) |
429 |
> |
awaitTermination(thread, MEDIUM_DELAY_MS); |
430 |
|
} |
431 |
|
|
432 |
|
/** |
433 |
|
* awaitAdvance returns the current phase |
434 |
|
*/ |
435 |
< |
public void testAwaitAdvance5() { |
435 |
> |
public void testAwaitAdvance5() throws InterruptedException { |
436 |
|
final Phaser phaser = new Phaser(1); |
437 |
< |
int phase = phaser.awaitAdvance(phaser.arrive()); |
438 |
< |
assertEquals(phase, phaser.getPhase()); |
439 |
< |
phaser.register(); |
440 |
< |
for (int i = 0; i < eight; i++) { |
441 |
< |
new Thread() { |
442 |
< |
|
443 |
< |
public void run() { |
444 |
< |
getRunnable(SHORT_DELAY_MS).run(); |
437 |
> |
assertEquals(1, phaser.awaitAdvance(phaser.arrive())); |
438 |
> |
assertEquals(1, phaser.getPhase()); |
439 |
> |
assertEquals(1, phaser.register()); |
440 |
> |
List<Thread> threads = new ArrayList<Thread>(); |
441 |
> |
for (int i = 0; i < 8; i++) { |
442 |
> |
final CountDownLatch latch = new CountDownLatch(1); |
443 |
> |
final boolean goesFirst = ((i & 1) == 0); |
444 |
> |
threads.add(newStartedThread(new CheckedRunnable() { |
445 |
> |
public void realRun() throws InterruptedException { |
446 |
> |
if (goesFirst) |
447 |
> |
latch.countDown(); |
448 |
> |
else |
449 |
> |
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
450 |
|
phaser.arrive(); |
451 |
< |
} |
452 |
< |
}.start(); |
453 |
< |
phase = phaser.awaitAdvance(phaser.arrive()); |
454 |
< |
assertEquals(phase, phaser.getPhase()); |
451 |
> |
}})); |
452 |
> |
if (goesFirst) |
453 |
> |
assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
454 |
> |
else |
455 |
> |
latch.countDown(); |
456 |
> |
assertEquals(i + 2, phaser.awaitAdvance(phaser.arrive())); |
457 |
> |
assertEquals(i + 2, phaser.getPhase()); |
458 |
|
} |
459 |
+ |
for (Thread thread : threads) |
460 |
+ |
awaitTermination(thread, SMALL_DELAY_MS); |
461 |
|
} |
462 |
|
|
463 |
|
/** |
464 |
|
* awaitAdvance returns when the phaser is externally terminated |
465 |
|
*/ |
466 |
< |
public void testAwaitAdvance6() { |
466 |
> |
public void testAwaitAdvance6() throws InterruptedException { |
467 |
|
final Phaser phaser = new Phaser(3); |
468 |
< |
/* |
469 |
< |
* Start new thread. This thread waits a small amount of time |
470 |
< |
* and waits for the other two parties to arrive. The party |
471 |
< |
* in the main thread arrives quickly so at best this thread |
472 |
< |
* waits for the second thread's party to arrive |
473 |
< |
*/ |
474 |
< |
new Thread() { |
475 |
< |
|
476 |
< |
public void run() { |
477 |
< |
getRunnable(SMALL_DELAY_MS).run(); |
478 |
< |
int phase = phaser.awaitAdvance(phaser.arrive()); |
479 |
< |
/* |
480 |
< |
* This point is reached when force termination is called in which phase = -1 |
481 |
< |
*/ |
482 |
< |
threadAssertTrue(phase < 0); |
435 |
< |
threadAssertTrue(phaser.isTerminated()); |
436 |
< |
} |
437 |
< |
}.start(); |
438 |
< |
/* |
439 |
< |
* This thread will cause the first thread run to wait, in doing so |
440 |
< |
* the main thread will force termination in which the first thread |
441 |
< |
* should exit peacefully as this one |
442 |
< |
*/ |
443 |
< |
new Thread() { |
444 |
< |
|
445 |
< |
public void run() { |
446 |
< |
getRunnable(LONG_DELAY_MS).run(); |
447 |
< |
int p1 = phaser.arrive(); |
448 |
< |
int phase = phaser.awaitAdvance(p1); |
449 |
< |
threadAssertTrue(phase < 0); |
450 |
< |
threadAssertTrue(phaser.isTerminated()); |
451 |
< |
} |
452 |
< |
}.start(); |
453 |
< |
|
454 |
< |
phaser.arrive(); |
468 |
> |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
469 |
> |
final List<Thread> threads = new ArrayList<Thread>(); |
470 |
> |
for (int i = 0; i < 2; i++) { |
471 |
> |
Runnable r = new CheckedRunnable() { |
472 |
> |
public void realRun() { |
473 |
> |
assertEquals(0, phaser.arrive()); |
474 |
> |
threadsStarted.countDown(); |
475 |
> |
assertTrue(phaser.awaitAdvance(0) < 0); |
476 |
> |
assertTrue(phaser.isTerminated()); |
477 |
> |
assertTrue(phaser.getPhase() < 0); |
478 |
> |
assertEquals(3, phaser.getRegisteredParties()); |
479 |
> |
}}; |
480 |
> |
threads.add(newStartedThread(r)); |
481 |
> |
} |
482 |
> |
threadsStarted.await(); |
483 |
|
phaser.forceTermination(); |
484 |
+ |
for (Thread thread : threads) |
485 |
+ |
awaitTermination(thread, SMALL_DELAY_MS); |
486 |
+ |
assertTrue(phaser.isTerminated()); |
487 |
+ |
assertTrue(phaser.getPhase() < 0); |
488 |
+ |
assertEquals(3, phaser.getRegisteredParties()); |
489 |
|
} |
490 |
|
|
491 |
|
/** |
497 |
|
Phaser phaser = new Phaser(); |
498 |
|
phaser.arriveAndAwaitAdvance(); |
499 |
|
shouldThrow(); |
500 |
< |
} catch (IllegalStateException success) { |
468 |
< |
} |
500 |
> |
} catch (IllegalStateException success) {} |
501 |
|
} |
502 |
|
|
503 |
|
/** |
504 |
|
* Interrupted arriveAndAwaitAdvance does not throw InterruptedException |
505 |
|
*/ |
506 |
< |
public void testArriveAndAwaitAdvance2() { |
506 |
> |
public void testArriveAndAwaitAdvance2() throws InterruptedException { |
507 |
|
final Phaser phaser = new Phaser(2); |
508 |
< |
Thread th = new Thread() { |
509 |
< |
public void run() { |
510 |
< |
try { |
511 |
< |
phaser.arriveAndAwaitAdvance(); |
512 |
< |
} catch (Exception failure) { |
513 |
< |
threadUnexpectedException(failure); |
514 |
< |
} |
515 |
< |
} |
516 |
< |
}; |
517 |
< |
|
518 |
< |
try { |
519 |
< |
th.start(); |
520 |
< |
Thread.sleep(LONG_DELAY_MS); |
521 |
< |
th.interrupt(); |
522 |
< |
Thread.sleep(LONG_DELAY_MS); |
523 |
< |
phaser.arrive(); |
524 |
< |
} catch (InterruptedException failure) { |
525 |
< |
this.unexpectedException(); |
526 |
< |
} |
527 |
< |
assertFalse(th.isInterrupted()); |
508 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
509 |
> |
final AtomicBoolean advanced = new AtomicBoolean(false); |
510 |
> |
final AtomicBoolean checkedInterruptStatus = new AtomicBoolean(false); |
511 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
512 |
> |
public void realRun() throws InterruptedException { |
513 |
> |
threadStarted.countDown(); |
514 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
515 |
> |
assertState(phaser, 1, 2, 2); |
516 |
> |
advanced.set(true); |
517 |
> |
assertTrue(Thread.currentThread().isInterrupted()); |
518 |
> |
while (!checkedInterruptStatus.get()) |
519 |
> |
Thread.yield(); |
520 |
> |
}}); |
521 |
> |
|
522 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
523 |
> |
t.interrupt(); |
524 |
> |
assertEquals(0, phaser.arrive()); |
525 |
> |
while (!advanced.get()) |
526 |
> |
Thread.yield(); |
527 |
> |
assertTrue(t.isInterrupted()); |
528 |
> |
checkedInterruptStatus.set(true); |
529 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
530 |
|
} |
531 |
|
|
532 |
|
/** |
534 |
|
* number of arrived parties is the same number that is accounted |
535 |
|
* for when the main thread awaitsAdvance |
536 |
|
*/ |
537 |
< |
public void testArriveAndAwaitAdvance3() { |
537 |
> |
public void testArriveAndAwaitAdvance3() throws InterruptedException { |
538 |
|
final Phaser phaser = new Phaser(1); |
539 |
< |
final AtomicInteger arrivingCount = new AtomicInteger(0); |
540 |
< |
for (final Runnable run : getRunnables(six, SHORT_DELAY_MS)) { |
541 |
< |
new Thread() { |
542 |
< |
|
543 |
< |
public void run() { |
544 |
< |
phaser.register(); |
545 |
< |
run.run(); |
546 |
< |
arrivingCount.getAndIncrement(); |
547 |
< |
phaser.arrive(); |
548 |
< |
} |
549 |
< |
}.start(); |
550 |
< |
} |
551 |
< |
int phaseNumber = phaser.arriveAndAwaitAdvance(); |
552 |
< |
arrivingCount.incrementAndGet(); |
553 |
< |
//the + 1 adds to expectedArrive to account for the main threads arrival |
554 |
< |
int expectedArrived = phaseNumber > 0 ? phaseNumber * six + 1 : phaser.getArrivedParties() + 1; |
555 |
< |
threadAssertEquals(expectedArrived, arrivingCount.get()); |
556 |
< |
} |
557 |
< |
// .. initially called, for n tasks via |
558 |
< |
private List<Runnable> getRunnables(int size, long wait) { |
559 |
< |
List<Runnable> list = new ArrayList<Runnable>(); |
560 |
< |
for (int i = 0; i < size; i++) { |
561 |
< |
list.add(getRunnable(wait)); |
562 |
< |
} |
529 |
< |
return list; |
530 |
< |
} |
531 |
< |
|
532 |
< |
private Runnable getRunnable(final long wait) { |
533 |
< |
return new Runnable() { |
534 |
< |
|
535 |
< |
public void run() { |
536 |
< |
try { |
537 |
< |
Thread.sleep(wait); |
538 |
< |
} catch (InterruptedException noop) { |
539 |
< |
// sleep interruption isn't a problem case for these example |
540 |
< |
} catch (Exception ex) { |
541 |
< |
threadUnexpectedException(ex); |
542 |
< |
} |
543 |
< |
|
544 |
< |
} |
545 |
< |
}; |
539 |
> |
final int THREADS = 3; |
540 |
> |
final CountDownLatch threadsStarted = new CountDownLatch(THREADS); |
541 |
> |
final List<Thread> threads = new ArrayList<Thread>(); |
542 |
> |
for (int i = 0; i < THREADS; i++) |
543 |
> |
threads.add(newStartedThread(new CheckedRunnable() { |
544 |
> |
public void realRun() throws InterruptedException { |
545 |
> |
assertEquals(0, phaser.register()); |
546 |
> |
threadsStarted.countDown(); |
547 |
> |
assertEquals(1, phaser.arriveAndAwaitAdvance()); |
548 |
> |
}})); |
549 |
> |
|
550 |
> |
assertTrue(threadsStarted.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
551 |
> |
long t0 = System.nanoTime(); |
552 |
> |
while (phaser.getArrivedParties() < THREADS) |
553 |
> |
Thread.yield(); |
554 |
> |
assertEquals(THREADS, phaser.getArrivedParties()); |
555 |
> |
assertTrue(NANOSECONDS.toMillis(System.nanoTime() - t0) < SMALL_DELAY_MS); |
556 |
> |
for (Thread thread : threads) |
557 |
> |
assertTrue(thread.isAlive()); |
558 |
> |
assertState(phaser, 0, THREADS + 1, 1); |
559 |
> |
phaser.arriveAndAwaitAdvance(); |
560 |
> |
for (Thread thread : threads) |
561 |
> |
awaitTermination(thread, SMALL_DELAY_MS); |
562 |
> |
assertState(phaser, 1, THREADS + 1, THREADS + 1); |
563 |
|
} |
564 |
|
|
565 |
|
} |