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 Andrew Wright, Jeffrey Hayes, |
6 |
|
* Pat Fisher, Mike Judd. |
7 |
|
*/ |
11 |
|
import java.util.concurrent.*; |
12 |
|
import java.util.concurrent.locks.*; |
13 |
|
import java.util.concurrent.atomic.*; |
14 |
+ |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
15 |
|
|
16 |
|
public class CyclicBarrierTest extends JSR166TestCase { |
17 |
|
public static void main(String[] args) { |
18 |
< |
junit.textui.TestRunner.run (suite()); |
18 |
> |
junit.textui.TestRunner.run(suite()); |
19 |
|
} |
20 |
|
public static Test suite() { |
21 |
< |
return new TestSuite(CyclicBarrierTest.class); |
21 |
> |
return new TestSuite(CyclicBarrierTest.class); |
22 |
|
} |
23 |
|
|
24 |
|
private volatile int countAction; |
27 |
|
} |
28 |
|
|
29 |
|
/** |
30 |
+ |
* Spin-waits till the number of waiters == numberOfWaiters. |
31 |
+ |
*/ |
32 |
+ |
void awaitNumberWaiting(CyclicBarrier barrier, int numberOfWaiters) { |
33 |
+ |
long startTime = System.nanoTime(); |
34 |
+ |
while (barrier.getNumberWaiting() != numberOfWaiters) { |
35 |
+ |
if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
36 |
+ |
fail("timed out"); |
37 |
+ |
Thread.yield(); |
38 |
+ |
} |
39 |
+ |
} |
40 |
+ |
|
41 |
+ |
/** |
42 |
|
* Creating with negative parties throws IAE |
43 |
|
*/ |
44 |
|
public void testConstructor1() { |
45 |
|
try { |
46 |
|
new CyclicBarrier(-1, (Runnable)null); |
47 |
|
shouldThrow(); |
48 |
< |
} catch (IllegalArgumentException e) {} |
48 |
> |
} catch (IllegalArgumentException success) {} |
49 |
|
} |
50 |
|
|
51 |
|
/** |
55 |
|
try { |
56 |
|
new CyclicBarrier(-1); |
57 |
|
shouldThrow(); |
58 |
< |
} catch (IllegalArgumentException e) {} |
58 |
> |
} catch (IllegalArgumentException success) {} |
59 |
|
} |
60 |
|
|
61 |
|
/** |
63 |
|
*/ |
64 |
|
public void testGetParties() { |
65 |
|
CyclicBarrier b = new CyclicBarrier(2); |
66 |
< |
assertEquals(2, b.getParties()); |
66 |
> |
assertEquals(2, b.getParties()); |
67 |
|
assertEquals(0, b.getNumberWaiting()); |
68 |
|
} |
69 |
|
|
70 |
|
/** |
71 |
|
* A 1-party barrier triggers after single await |
72 |
|
*/ |
73 |
< |
public void testSingleParty() { |
74 |
< |
try { |
75 |
< |
CyclicBarrier b = new CyclicBarrier(1); |
76 |
< |
assertEquals(1, b.getParties()); |
77 |
< |
assertEquals(0, b.getNumberWaiting()); |
78 |
< |
b.await(); |
79 |
< |
b.await(); |
67 |
< |
assertEquals(0, b.getNumberWaiting()); |
68 |
< |
} |
69 |
< |
catch (Exception e) { |
70 |
< |
unexpectedException(); |
71 |
< |
} |
73 |
> |
public void testSingleParty() throws Exception { |
74 |
> |
CyclicBarrier b = new CyclicBarrier(1); |
75 |
> |
assertEquals(1, b.getParties()); |
76 |
> |
assertEquals(0, b.getNumberWaiting()); |
77 |
> |
b.await(); |
78 |
> |
b.await(); |
79 |
> |
assertEquals(0, b.getNumberWaiting()); |
80 |
|
} |
81 |
|
|
82 |
|
/** |
83 |
|
* The supplied barrier action is run at barrier |
84 |
|
*/ |
85 |
< |
public void testBarrierAction() { |
86 |
< |
try { |
87 |
< |
countAction = 0; |
88 |
< |
CyclicBarrier b = new CyclicBarrier(1, new MyAction()); |
89 |
< |
assertEquals(1, b.getParties()); |
90 |
< |
assertEquals(0, b.getNumberWaiting()); |
91 |
< |
b.await(); |
92 |
< |
b.await(); |
93 |
< |
assertEquals(0, b.getNumberWaiting()); |
86 |
< |
assertEquals(countAction, 2); |
87 |
< |
} |
88 |
< |
catch (Exception e) { |
89 |
< |
unexpectedException(); |
90 |
< |
} |
85 |
> |
public void testBarrierAction() throws Exception { |
86 |
> |
countAction = 0; |
87 |
> |
CyclicBarrier b = new CyclicBarrier(1, new MyAction()); |
88 |
> |
assertEquals(1, b.getParties()); |
89 |
> |
assertEquals(0, b.getNumberWaiting()); |
90 |
> |
b.await(); |
91 |
> |
b.await(); |
92 |
> |
assertEquals(0, b.getNumberWaiting()); |
93 |
> |
assertEquals(countAction, 2); |
94 |
|
} |
95 |
|
|
96 |
|
/** |
97 |
|
* A 2-party/thread barrier triggers after both threads invoke await |
98 |
|
*/ |
99 |
< |
public void testTwoParties() { |
99 |
> |
public void testTwoParties() throws Exception { |
100 |
|
final CyclicBarrier b = new CyclicBarrier(2); |
101 |
< |
Thread t = new Thread(new Runnable() { |
102 |
< |
public void run() { |
103 |
< |
try { |
104 |
< |
b.await(); |
105 |
< |
b.await(); |
106 |
< |
b.await(); |
107 |
< |
b.await(); |
108 |
< |
} catch (Exception e) { |
109 |
< |
threadUnexpectedException(); |
110 |
< |
}}}); |
111 |
< |
|
112 |
< |
try { |
113 |
< |
t.start(); |
111 |
< |
b.await(); |
112 |
< |
b.await(); |
113 |
< |
b.await(); |
114 |
< |
b.await(); |
115 |
< |
t.join(); |
116 |
< |
} catch (Exception e) { |
117 |
< |
unexpectedException(); |
118 |
< |
} |
101 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
102 |
> |
public void realRun() throws Exception { |
103 |
> |
b.await(); |
104 |
> |
b.await(); |
105 |
> |
b.await(); |
106 |
> |
b.await(); |
107 |
> |
}}); |
108 |
> |
|
109 |
> |
b.await(); |
110 |
> |
b.await(); |
111 |
> |
b.await(); |
112 |
> |
b.await(); |
113 |
> |
awaitTermination(t); |
114 |
|
} |
115 |
|
|
121 |
– |
|
116 |
|
/** |
117 |
|
* An interruption in one party causes others waiting in await to |
118 |
|
* throw BrokenBarrierException |
119 |
|
*/ |
120 |
|
public void testAwait1_Interrupted_BrokenBarrier() { |
121 |
|
final CyclicBarrier c = new CyclicBarrier(3); |
122 |
< |
Thread t1 = new Thread(new Runnable() { |
123 |
< |
public void run() { |
124 |
< |
try { |
125 |
< |
c.await(); |
126 |
< |
threadShouldThrow(); |
127 |
< |
} catch (InterruptedException success) {} |
128 |
< |
catch (Exception b) { |
129 |
< |
threadUnexpectedException(); |
130 |
< |
} |
131 |
< |
} |
132 |
< |
}); |
133 |
< |
Thread t2 = new Thread(new Runnable() { |
134 |
< |
public void run() { |
135 |
< |
try { |
136 |
< |
c.await(); |
137 |
< |
threadShouldThrow(); |
138 |
< |
} catch (BrokenBarrierException success) { |
139 |
< |
} catch (Exception i) { |
146 |
< |
threadUnexpectedException(); |
147 |
< |
} |
148 |
< |
} |
149 |
< |
}); |
150 |
< |
try { |
151 |
< |
t1.start(); |
152 |
< |
t2.start(); |
153 |
< |
Thread.sleep(SHORT_DELAY_MS); |
154 |
< |
t1.interrupt(); |
155 |
< |
t1.join(); |
156 |
< |
t2.join(); |
157 |
< |
} catch (InterruptedException e) { |
158 |
< |
unexpectedException(); |
159 |
< |
} |
122 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(2); |
123 |
> |
Thread t1 = new ThreadShouldThrow(InterruptedException.class) { |
124 |
> |
public void realRun() throws Exception { |
125 |
> |
pleaseInterrupt.countDown(); |
126 |
> |
c.await(); |
127 |
> |
}}; |
128 |
> |
Thread t2 = new ThreadShouldThrow(BrokenBarrierException.class) { |
129 |
> |
public void realRun() throws Exception { |
130 |
> |
pleaseInterrupt.countDown(); |
131 |
> |
c.await(); |
132 |
> |
}}; |
133 |
> |
|
134 |
> |
t1.start(); |
135 |
> |
t2.start(); |
136 |
> |
await(pleaseInterrupt); |
137 |
> |
t1.interrupt(); |
138 |
> |
awaitTermination(t1); |
139 |
> |
awaitTermination(t2); |
140 |
|
} |
141 |
|
|
142 |
|
/** |
143 |
|
* An interruption in one party causes others waiting in timed await to |
144 |
|
* throw BrokenBarrierException |
145 |
|
*/ |
146 |
< |
public void testAwait2_Interrupted_BrokenBarrier() { |
146 |
> |
public void testAwait2_Interrupted_BrokenBarrier() throws Exception { |
147 |
|
final CyclicBarrier c = new CyclicBarrier(3); |
148 |
< |
Thread t1 = new Thread(new Runnable() { |
149 |
< |
public void run() { |
150 |
< |
try { |
151 |
< |
c.await(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
152 |
< |
threadShouldThrow(); |
153 |
< |
} catch (InterruptedException success) { |
154 |
< |
} catch (Exception b) { |
155 |
< |
threadUnexpectedException(); |
156 |
< |
} |
157 |
< |
} |
158 |
< |
}); |
159 |
< |
Thread t2 = new Thread(new Runnable() { |
160 |
< |
public void run() { |
161 |
< |
try { |
162 |
< |
c.await(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
163 |
< |
threadShouldThrow(); |
164 |
< |
} catch (BrokenBarrierException success) { |
165 |
< |
} catch (Exception i) { |
186 |
< |
threadUnexpectedException(); |
187 |
< |
} |
188 |
< |
} |
189 |
< |
}); |
190 |
< |
try { |
191 |
< |
t1.start(); |
192 |
< |
t2.start(); |
193 |
< |
Thread.sleep(SHORT_DELAY_MS); |
194 |
< |
t1.interrupt(); |
195 |
< |
t1.join(); |
196 |
< |
t2.join(); |
197 |
< |
} catch (InterruptedException e) { |
198 |
< |
unexpectedException(); |
199 |
< |
} |
148 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(2); |
149 |
> |
Thread t1 = new ThreadShouldThrow(InterruptedException.class) { |
150 |
> |
public void realRun() throws Exception { |
151 |
> |
pleaseInterrupt.countDown(); |
152 |
> |
c.await(LONG_DELAY_MS, MILLISECONDS); |
153 |
> |
}}; |
154 |
> |
Thread t2 = new ThreadShouldThrow(BrokenBarrierException.class) { |
155 |
> |
public void realRun() throws Exception { |
156 |
> |
pleaseInterrupt.countDown(); |
157 |
> |
c.await(LONG_DELAY_MS, MILLISECONDS); |
158 |
> |
}}; |
159 |
> |
|
160 |
> |
t1.start(); |
161 |
> |
t2.start(); |
162 |
> |
await(pleaseInterrupt); |
163 |
> |
t1.interrupt(); |
164 |
> |
awaitTermination(t1); |
165 |
> |
awaitTermination(t2); |
166 |
|
} |
167 |
|
|
168 |
|
/** |
169 |
|
* A timeout in timed await throws TimeoutException |
170 |
|
*/ |
171 |
< |
public void testAwait3_TimeOutException() { |
171 |
> |
public void testAwait3_TimeoutException() throws InterruptedException { |
172 |
|
final CyclicBarrier c = new CyclicBarrier(2); |
173 |
< |
Thread t = new Thread(new Runnable() { |
174 |
< |
public void run() { |
175 |
< |
try { |
176 |
< |
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
177 |
< |
threadShouldThrow(); |
178 |
< |
} catch (TimeoutException success) { |
179 |
< |
} catch (Exception b) { |
180 |
< |
threadUnexpectedException(); |
173 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
174 |
> |
public void realRun() throws Exception { |
175 |
> |
long startTime = System.nanoTime(); |
176 |
> |
try { |
177 |
> |
c.await(timeoutMillis(), MILLISECONDS); |
178 |
> |
shouldThrow(); |
179 |
> |
} catch (TimeoutException success) {} |
180 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
181 |
> |
}}); |
182 |
|
|
183 |
< |
} |
217 |
< |
} |
218 |
< |
}); |
219 |
< |
try { |
220 |
< |
t.start(); |
221 |
< |
t.join(); |
222 |
< |
} catch (InterruptedException e) { |
223 |
< |
unexpectedException(); |
224 |
< |
} |
183 |
> |
awaitTermination(t); |
184 |
|
} |
185 |
|
|
186 |
|
/** |
187 |
|
* A timeout in one party causes others waiting in timed await to |
188 |
|
* throw BrokenBarrierException |
189 |
|
*/ |
190 |
< |
public void testAwait4_Timeout_BrokenBarrier() { |
190 |
> |
public void testAwait4_Timeout_BrokenBarrier() throws InterruptedException { |
191 |
|
final CyclicBarrier c = new CyclicBarrier(3); |
192 |
< |
Thread t1 = new Thread(new Runnable() { |
193 |
< |
public void run() { |
194 |
< |
try { |
195 |
< |
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
196 |
< |
threadShouldThrow(); |
197 |
< |
} catch (TimeoutException success) { |
198 |
< |
} catch (Exception b) { |
199 |
< |
threadUnexpectedException(); |
200 |
< |
} |
201 |
< |
} |
202 |
< |
}); |
203 |
< |
Thread t2 = new Thread(new Runnable() { |
204 |
< |
public void run() { |
205 |
< |
try { |
206 |
< |
c.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
207 |
< |
threadShouldThrow(); |
208 |
< |
} catch (BrokenBarrierException success) { |
209 |
< |
} catch (Exception i) { |
210 |
< |
threadUnexpectedException(); |
211 |
< |
} |
253 |
< |
} |
254 |
< |
}); |
255 |
< |
try { |
256 |
< |
t1.start(); |
257 |
< |
t2.start(); |
258 |
< |
t1.join(); |
259 |
< |
t2.join(); |
260 |
< |
} catch (InterruptedException e) { |
261 |
< |
unexpectedException(); |
262 |
< |
} |
192 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
193 |
> |
public void realRun() throws Exception { |
194 |
> |
try { |
195 |
> |
c.await(LONG_DELAY_MS, MILLISECONDS); |
196 |
> |
shouldThrow(); |
197 |
> |
} catch (BrokenBarrierException success) {} |
198 |
> |
}}); |
199 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
200 |
> |
public void realRun() throws Exception { |
201 |
> |
awaitNumberWaiting(c, 1); |
202 |
> |
long startTime = System.nanoTime(); |
203 |
> |
try { |
204 |
> |
c.await(timeoutMillis(), MILLISECONDS); |
205 |
> |
shouldThrow(); |
206 |
> |
} catch (TimeoutException success) {} |
207 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
208 |
> |
}}); |
209 |
> |
|
210 |
> |
awaitTermination(t1); |
211 |
> |
awaitTermination(t2); |
212 |
|
} |
213 |
|
|
214 |
|
/** |
215 |
|
* A timeout in one party causes others waiting in await to |
216 |
|
* throw BrokenBarrierException |
217 |
|
*/ |
218 |
< |
public void testAwait5_Timeout_BrokenBarrier() { |
218 |
> |
public void testAwait5_Timeout_BrokenBarrier() throws InterruptedException { |
219 |
|
final CyclicBarrier c = new CyclicBarrier(3); |
220 |
< |
Thread t1 = new Thread(new Runnable() { |
221 |
< |
public void run() { |
222 |
< |
try { |
223 |
< |
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
224 |
< |
threadShouldThrow(); |
225 |
< |
} catch (TimeoutException success) { |
226 |
< |
} catch (Exception b) { |
227 |
< |
threadUnexpectedException(); |
228 |
< |
} |
229 |
< |
} |
230 |
< |
}); |
231 |
< |
Thread t2 = new Thread(new Runnable() { |
232 |
< |
public void run() { |
233 |
< |
try { |
234 |
< |
c.await(); |
235 |
< |
threadShouldThrow(); |
236 |
< |
} catch (BrokenBarrierException success) { |
237 |
< |
} catch (Exception i) { |
238 |
< |
threadUnexpectedException(); |
239 |
< |
} |
291 |
< |
} |
292 |
< |
}); |
293 |
< |
try { |
294 |
< |
t1.start(); |
295 |
< |
t2.start(); |
296 |
< |
t1.join(); |
297 |
< |
t2.join(); |
298 |
< |
} catch (InterruptedException e) { |
299 |
< |
unexpectedException(); |
300 |
< |
} |
220 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
221 |
> |
public void realRun() throws Exception { |
222 |
> |
try { |
223 |
> |
c.await(); |
224 |
> |
shouldThrow(); |
225 |
> |
} catch (BrokenBarrierException success) {} |
226 |
> |
}}); |
227 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
228 |
> |
public void realRun() throws Exception { |
229 |
> |
awaitNumberWaiting(c, 1); |
230 |
> |
long startTime = System.nanoTime(); |
231 |
> |
try { |
232 |
> |
c.await(timeoutMillis(), MILLISECONDS); |
233 |
> |
shouldThrow(); |
234 |
> |
} catch (TimeoutException success) {} |
235 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
236 |
> |
}}); |
237 |
> |
|
238 |
> |
awaitTermination(t1); |
239 |
> |
awaitTermination(t2); |
240 |
|
} |
241 |
|
|
242 |
|
/** |
243 |
|
* A reset of an active barrier causes waiting threads to throw |
244 |
|
* BrokenBarrierException |
245 |
|
*/ |
246 |
< |
public void testReset_BrokenBarrier() { |
246 |
> |
public void testReset_BrokenBarrier() throws InterruptedException { |
247 |
|
final CyclicBarrier c = new CyclicBarrier(3); |
248 |
< |
Thread t1 = new Thread(new Runnable() { |
249 |
< |
public void run() { |
250 |
< |
try { |
251 |
< |
c.await(); |
252 |
< |
threadShouldThrow(); |
253 |
< |
} catch (BrokenBarrierException success) {} |
254 |
< |
catch (Exception b) { |
255 |
< |
threadUnexpectedException(); |
256 |
< |
} |
257 |
< |
} |
258 |
< |
}); |
259 |
< |
Thread t2 = new Thread(new Runnable() { |
260 |
< |
public void run() { |
261 |
< |
try { |
262 |
< |
c.await(); |
263 |
< |
threadShouldThrow(); |
264 |
< |
} catch (BrokenBarrierException success) { |
265 |
< |
} catch (Exception i) { |
266 |
< |
threadUnexpectedException(); |
267 |
< |
} |
329 |
< |
} |
330 |
< |
}); |
331 |
< |
try { |
332 |
< |
t1.start(); |
333 |
< |
t2.start(); |
334 |
< |
Thread.sleep(SHORT_DELAY_MS); |
335 |
< |
c.reset(); |
336 |
< |
t1.join(); |
337 |
< |
t2.join(); |
338 |
< |
} catch (InterruptedException e) { |
339 |
< |
unexpectedException(); |
340 |
< |
} |
248 |
> |
final CountDownLatch pleaseReset = new CountDownLatch(2); |
249 |
> |
Thread t1 = new ThreadShouldThrow(BrokenBarrierException.class) { |
250 |
> |
public void realRun() throws Exception { |
251 |
> |
pleaseReset.countDown(); |
252 |
> |
c.await(); |
253 |
> |
}}; |
254 |
> |
Thread t2 = new ThreadShouldThrow(BrokenBarrierException.class) { |
255 |
> |
public void realRun() throws Exception { |
256 |
> |
pleaseReset.countDown(); |
257 |
> |
c.await(); |
258 |
> |
}}; |
259 |
> |
|
260 |
> |
t1.start(); |
261 |
> |
t2.start(); |
262 |
> |
await(pleaseReset); |
263 |
> |
|
264 |
> |
awaitNumberWaiting(c, 2); |
265 |
> |
c.reset(); |
266 |
> |
awaitTermination(t1); |
267 |
> |
awaitTermination(t2); |
268 |
|
} |
269 |
|
|
270 |
|
/** |
271 |
|
* A reset before threads enter barrier does not throw |
272 |
|
* BrokenBarrierException |
273 |
|
*/ |
274 |
< |
public void testReset_NoBrokenBarrier() { |
274 |
> |
public void testReset_NoBrokenBarrier() throws Exception { |
275 |
|
final CyclicBarrier c = new CyclicBarrier(3); |
276 |
< |
Thread t1 = new Thread(new Runnable() { |
277 |
< |
public void run() { |
278 |
< |
try { |
279 |
< |
c.await(); |
280 |
< |
} catch (Exception b) { |
281 |
< |
threadUnexpectedException(); |
282 |
< |
} |
283 |
< |
} |
284 |
< |
}); |
285 |
< |
Thread t2 = new Thread(new Runnable() { |
286 |
< |
public void run() { |
287 |
< |
try { |
288 |
< |
c.await(); |
289 |
< |
} catch (Exception i) { |
363 |
< |
threadUnexpectedException(); |
364 |
< |
} |
365 |
< |
} |
366 |
< |
}); |
367 |
< |
try { |
368 |
< |
c.reset(); |
369 |
< |
t1.start(); |
370 |
< |
t2.start(); |
371 |
< |
c.await(); |
372 |
< |
t1.join(); |
373 |
< |
t2.join(); |
374 |
< |
} catch (Exception e) { |
375 |
< |
unexpectedException(); |
376 |
< |
} |
276 |
> |
c.reset(); |
277 |
> |
|
278 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
279 |
> |
public void realRun() throws Exception { |
280 |
> |
c.await(); |
281 |
> |
}}); |
282 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
283 |
> |
public void realRun() throws Exception { |
284 |
> |
c.await(); |
285 |
> |
}}); |
286 |
> |
|
287 |
> |
c.await(); |
288 |
> |
awaitTermination(t1); |
289 |
> |
awaitTermination(t2); |
290 |
|
} |
291 |
|
|
292 |
|
/** |
293 |
|
* All threads block while a barrier is broken. |
294 |
|
*/ |
295 |
< |
public void testReset_Leakage() { |
296 |
< |
try { |
297 |
< |
final CyclicBarrier c = new CyclicBarrier(2); |
298 |
< |
final AtomicBoolean done = new AtomicBoolean(); |
299 |
< |
Thread t = new Thread() { |
300 |
< |
public void run() { |
301 |
< |
while (!done.get()) { |
302 |
< |
try { |
303 |
< |
while (c.isBroken()) |
304 |
< |
c.reset(); |
305 |
< |
|
306 |
< |
c.await(); |
394 |
< |
threadFail("await should not return"); |
395 |
< |
} |
396 |
< |
catch (BrokenBarrierException e) { |
397 |
< |
} |
398 |
< |
catch (InterruptedException ie) { |
399 |
< |
} |
400 |
< |
} |
295 |
> |
public void testReset_Leakage() throws InterruptedException { |
296 |
> |
final CyclicBarrier c = new CyclicBarrier(2); |
297 |
> |
final AtomicBoolean done = new AtomicBoolean(); |
298 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
299 |
> |
public void realRun() { |
300 |
> |
while (!done.get()) { |
301 |
> |
try { |
302 |
> |
while (c.isBroken()) |
303 |
> |
c.reset(); |
304 |
> |
|
305 |
> |
c.await(); |
306 |
> |
shouldThrow(); |
307 |
|
} |
308 |
< |
}; |
308 |
> |
catch (BrokenBarrierException ok) {} |
309 |
> |
catch (InterruptedException ok) {} |
310 |
> |
}}}); |
311 |
|
|
312 |
< |
t.start(); |
313 |
< |
for ( int i = 0; i < 4; i++) { |
406 |
< |
Thread.sleep(SHORT_DELAY_MS); |
407 |
< |
t.interrupt(); |
408 |
< |
} |
409 |
< |
done.set(true); |
312 |
> |
for (int i = 0; i < 4; i++) { |
313 |
> |
delay(timeoutMillis()); |
314 |
|
t.interrupt(); |
315 |
|
} |
316 |
< |
catch (Exception ex) { |
317 |
< |
unexpectedException(); |
318 |
< |
} |
316 |
> |
done.set(true); |
317 |
> |
t.interrupt(); |
318 |
> |
awaitTermination(t); |
319 |
|
} |
320 |
|
|
321 |
|
/** |
322 |
|
* Reset of a non-broken barrier does not break barrier |
323 |
|
*/ |
324 |
< |
public void testResetWithoutBreakage() { |
325 |
< |
try { |
324 |
> |
public void testResetWithoutBreakage() throws Exception { |
325 |
> |
final CyclicBarrier barrier = new CyclicBarrier(3); |
326 |
> |
for (int i = 0; i < 3; i++) { |
327 |
|
final CyclicBarrier start = new CyclicBarrier(3); |
328 |
< |
final CyclicBarrier barrier = new CyclicBarrier(3); |
329 |
< |
for (int i = 0; i < 3; i++) { |
330 |
< |
Thread t1 = new Thread(new Runnable() { |
331 |
< |
public void run() { |
332 |
< |
try { start.await(); } |
333 |
< |
catch (Exception ie) { |
334 |
< |
threadFail("start barrier"); |
335 |
< |
} |
336 |
< |
try { barrier.await(); } |
337 |
< |
catch (Throwable thrown) { |
338 |
< |
unexpectedException(); |
339 |
< |
}}}); |
340 |
< |
|
341 |
< |
Thread t2 = new Thread(new Runnable() { |
342 |
< |
public void run() { |
343 |
< |
try { start.await(); } |
344 |
< |
catch (Exception ie) { |
345 |
< |
threadFail("start barrier"); |
346 |
< |
} |
347 |
< |
try { barrier.await(); } |
348 |
< |
catch (Throwable thrown) { |
444 |
< |
unexpectedException(); |
445 |
< |
}}}); |
446 |
< |
|
447 |
< |
|
448 |
< |
t1.start(); |
449 |
< |
t2.start(); |
450 |
< |
try { start.await(); } |
451 |
< |
catch (Exception ie) { threadFail("start barrier"); } |
452 |
< |
barrier.await(); |
453 |
< |
t1.join(); |
454 |
< |
t2.join(); |
455 |
< |
assertFalse(barrier.isBroken()); |
456 |
< |
assertEquals(0, barrier.getNumberWaiting()); |
457 |
< |
if (i == 1) barrier.reset(); |
458 |
< |
assertFalse(barrier.isBroken()); |
459 |
< |
assertEquals(0, barrier.getNumberWaiting()); |
460 |
< |
} |
461 |
< |
} |
462 |
< |
catch (Exception ex) { |
463 |
< |
unexpectedException(); |
328 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
329 |
> |
public void realRun() throws Exception { |
330 |
> |
start.await(); |
331 |
> |
barrier.await(); |
332 |
> |
}}); |
333 |
> |
|
334 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
335 |
> |
public void realRun() throws Exception { |
336 |
> |
start.await(); |
337 |
> |
barrier.await(); |
338 |
> |
}}); |
339 |
> |
|
340 |
> |
start.await(); |
341 |
> |
barrier.await(); |
342 |
> |
awaitTermination(t1); |
343 |
> |
awaitTermination(t2); |
344 |
> |
assertFalse(barrier.isBroken()); |
345 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
346 |
> |
if (i == 1) barrier.reset(); |
347 |
> |
assertFalse(barrier.isBroken()); |
348 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
349 |
|
} |
350 |
|
} |
351 |
|
|
352 |
|
/** |
353 |
|
* Reset of a barrier after interruption reinitializes it. |
354 |
|
*/ |
355 |
< |
public void testResetAfterInterrupt() { |
356 |
< |
try { |
355 |
> |
public void testResetAfterInterrupt() throws Exception { |
356 |
> |
final CyclicBarrier barrier = new CyclicBarrier(3); |
357 |
> |
for (int i = 0; i < 2; i++) { |
358 |
|
final CyclicBarrier start = new CyclicBarrier(3); |
359 |
< |
final CyclicBarrier barrier = new CyclicBarrier(3); |
360 |
< |
for (int i = 0; i < 2; i++) { |
361 |
< |
Thread t1 = new Thread(new Runnable() { |
362 |
< |
public void run() { |
363 |
< |
try { start.await(); } |
364 |
< |
catch (Exception ie) { |
365 |
< |
threadFail("start barrier"); |
366 |
< |
} |
367 |
< |
try { barrier.await(); } |
368 |
< |
catch (InterruptedException ok) {} |
369 |
< |
catch (Throwable thrown) { |
370 |
< |
unexpectedException(); |
371 |
< |
}}}); |
372 |
< |
|
373 |
< |
Thread t2 = new Thread(new Runnable() { |
374 |
< |
public void run() { |
375 |
< |
try { start.await(); } |
376 |
< |
catch (Exception ie) { |
377 |
< |
threadFail("start barrier"); |
378 |
< |
} |
379 |
< |
try { barrier.await(); } |
380 |
< |
catch (BrokenBarrierException ok) {} |
381 |
< |
catch (Throwable thrown) { |
496 |
< |
unexpectedException(); |
497 |
< |
}}}); |
498 |
< |
|
499 |
< |
t1.start(); |
500 |
< |
t2.start(); |
501 |
< |
try { start.await(); } |
502 |
< |
catch (Exception ie) { threadFail("start barrier"); } |
503 |
< |
t1.interrupt(); |
504 |
< |
t1.join(); |
505 |
< |
t2.join(); |
506 |
< |
assertTrue(barrier.isBroken()); |
507 |
< |
assertEquals(0, barrier.getNumberWaiting()); |
508 |
< |
barrier.reset(); |
509 |
< |
assertFalse(barrier.isBroken()); |
510 |
< |
assertEquals(0, barrier.getNumberWaiting()); |
511 |
< |
} |
512 |
< |
} |
513 |
< |
catch (Exception ex) { |
514 |
< |
unexpectedException(); |
359 |
> |
Thread t1 = new ThreadShouldThrow(InterruptedException.class) { |
360 |
> |
public void realRun() throws Exception { |
361 |
> |
start.await(); |
362 |
> |
barrier.await(); |
363 |
> |
}}; |
364 |
> |
|
365 |
> |
Thread t2 = new ThreadShouldThrow(BrokenBarrierException.class) { |
366 |
> |
public void realRun() throws Exception { |
367 |
> |
start.await(); |
368 |
> |
barrier.await(); |
369 |
> |
}}; |
370 |
> |
|
371 |
> |
t1.start(); |
372 |
> |
t2.start(); |
373 |
> |
start.await(); |
374 |
> |
t1.interrupt(); |
375 |
> |
awaitTermination(t1); |
376 |
> |
awaitTermination(t2); |
377 |
> |
assertTrue(barrier.isBroken()); |
378 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
379 |
> |
barrier.reset(); |
380 |
> |
assertFalse(barrier.isBroken()); |
381 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
382 |
|
} |
383 |
|
} |
384 |
|
|
385 |
|
/** |
386 |
|
* Reset of a barrier after timeout reinitializes it. |
387 |
|
*/ |
388 |
< |
public void testResetAfterTimeout() { |
389 |
< |
try { |
390 |
< |
final CyclicBarrier start = new CyclicBarrier(3); |
391 |
< |
final CyclicBarrier barrier = new CyclicBarrier(3); |
392 |
< |
for (int i = 0; i < 2; i++) { |
393 |
< |
Thread t1 = new Thread(new Runnable() { |
394 |
< |
public void run() { |
395 |
< |
try { start.await(); } |
396 |
< |
catch (Exception ie) { |
397 |
< |
threadFail("start barrier"); |
398 |
< |
} |
399 |
< |
try { barrier.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); } |
400 |
< |
catch (TimeoutException ok) {} |
401 |
< |
catch (Throwable thrown) { |
402 |
< |
unexpectedException(); |
403 |
< |
}}}); |
404 |
< |
|
405 |
< |
Thread t2 = new Thread(new Runnable() { |
406 |
< |
public void run() { |
407 |
< |
try { start.await(); } |
408 |
< |
catch (Exception ie) { |
409 |
< |
threadFail("start barrier"); |
410 |
< |
} |
411 |
< |
try { barrier.await(); } |
412 |
< |
catch (BrokenBarrierException ok) {} |
413 |
< |
catch (Throwable thrown) { |
414 |
< |
unexpectedException(); |
415 |
< |
}}}); |
416 |
< |
|
417 |
< |
t1.start(); |
551 |
< |
t2.start(); |
552 |
< |
try { start.await(); } |
553 |
< |
catch (Exception ie) { threadFail("start barrier"); } |
554 |
< |
t1.join(); |
555 |
< |
t2.join(); |
556 |
< |
assertTrue(barrier.isBroken()); |
557 |
< |
assertEquals(0, barrier.getNumberWaiting()); |
558 |
< |
barrier.reset(); |
559 |
< |
assertFalse(barrier.isBroken()); |
560 |
< |
assertEquals(0, barrier.getNumberWaiting()); |
561 |
< |
} |
562 |
< |
} |
563 |
< |
catch (Exception ex) { |
564 |
< |
unexpectedException(); |
388 |
> |
public void testResetAfterTimeout() throws Exception { |
389 |
> |
final CyclicBarrier barrier = new CyclicBarrier(3); |
390 |
> |
for (int i = 0; i < 2; i++) { |
391 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
392 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
393 |
> |
public void realRun() throws Exception { |
394 |
> |
try { |
395 |
> |
barrier.await(); |
396 |
> |
shouldThrow(); |
397 |
> |
} catch (BrokenBarrierException success) {} |
398 |
> |
}}); |
399 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
400 |
> |
public void realRun() throws Exception { |
401 |
> |
awaitNumberWaiting(barrier, 1); |
402 |
> |
long startTime = System.nanoTime(); |
403 |
> |
try { |
404 |
> |
barrier.await(timeoutMillis(), MILLISECONDS); |
405 |
> |
shouldThrow(); |
406 |
> |
} catch (TimeoutException success) {} |
407 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
408 |
> |
}}); |
409 |
> |
|
410 |
> |
awaitTermination(t1); |
411 |
> |
awaitTermination(t2); |
412 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
413 |
> |
assertTrue(barrier.isBroken()); |
414 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
415 |
> |
barrier.reset(); |
416 |
> |
assertFalse(barrier.isBroken()); |
417 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
418 |
|
} |
419 |
|
} |
420 |
|
|
568 |
– |
|
421 |
|
/** |
422 |
|
* Reset of a barrier after a failed command reinitializes it. |
423 |
|
*/ |
424 |
< |
public void testResetAfterCommandException() { |
425 |
< |
try { |
424 |
> |
public void testResetAfterCommandException() throws Exception { |
425 |
> |
final CyclicBarrier barrier = |
426 |
> |
new CyclicBarrier(3, new Runnable() { |
427 |
> |
public void run() { |
428 |
> |
throw new NullPointerException(); }}); |
429 |
> |
for (int i = 0; i < 2; i++) { |
430 |
|
final CyclicBarrier start = new CyclicBarrier(3); |
431 |
< |
final CyclicBarrier barrier = |
432 |
< |
new CyclicBarrier(3, new Runnable() { |
433 |
< |
public void run() { |
434 |
< |
throw new NullPointerException(); }}); |
435 |
< |
for (int i = 0; i < 2; i++) { |
436 |
< |
Thread t1 = new Thread(new Runnable() { |
437 |
< |
public void run() { |
438 |
< |
try { start.await(); } |
439 |
< |
catch (Exception ie) { |
440 |
< |
threadFail("start barrier"); |
441 |
< |
} |
442 |
< |
try { barrier.await(); } |
443 |
< |
catch (BrokenBarrierException ok) {} |
444 |
< |
catch (Throwable thrown) { |
445 |
< |
unexpectedException(); |
446 |
< |
}}}); |
447 |
< |
|
448 |
< |
Thread t2 = new Thread(new Runnable() { |
449 |
< |
public void run() { |
450 |
< |
try { start.await(); } |
451 |
< |
catch (Exception ie) { |
452 |
< |
threadFail("start barrier"); |
453 |
< |
} |
454 |
< |
try { barrier.await(); } |
455 |
< |
catch (BrokenBarrierException ok) {} |
456 |
< |
catch (Throwable thrown) { |
457 |
< |
unexpectedException(); |
602 |
< |
}}}); |
603 |
< |
|
604 |
< |
t1.start(); |
605 |
< |
t2.start(); |
606 |
< |
try { start.await(); } |
607 |
< |
catch (Exception ie) { threadFail("start barrier"); } |
608 |
< |
while (barrier.getNumberWaiting() < 2) { Thread.yield(); } |
609 |
< |
try { barrier.await(); } |
610 |
< |
catch (Exception ok) { } |
611 |
< |
t1.join(); |
612 |
< |
t2.join(); |
613 |
< |
assertTrue(barrier.isBroken()); |
614 |
< |
assertEquals(0, barrier.getNumberWaiting()); |
615 |
< |
barrier.reset(); |
616 |
< |
assertFalse(barrier.isBroken()); |
617 |
< |
assertEquals(0, barrier.getNumberWaiting()); |
618 |
< |
} |
619 |
< |
} |
620 |
< |
catch (Exception ex) { |
621 |
< |
unexpectedException(); |
431 |
> |
Thread t1 = new ThreadShouldThrow(BrokenBarrierException.class) { |
432 |
> |
public void realRun() throws Exception { |
433 |
> |
start.await(); |
434 |
> |
barrier.await(); |
435 |
> |
}}; |
436 |
> |
|
437 |
> |
Thread t2 = new ThreadShouldThrow(BrokenBarrierException.class) { |
438 |
> |
public void realRun() throws Exception { |
439 |
> |
start.await(); |
440 |
> |
barrier.await(); |
441 |
> |
}}; |
442 |
> |
|
443 |
> |
t1.start(); |
444 |
> |
t2.start(); |
445 |
> |
start.await(); |
446 |
> |
awaitNumberWaiting(barrier, 2); |
447 |
> |
try { |
448 |
> |
barrier.await(); |
449 |
> |
shouldThrow(); |
450 |
> |
} catch (NullPointerException success) {} |
451 |
> |
awaitTermination(t1); |
452 |
> |
awaitTermination(t2); |
453 |
> |
assertTrue(barrier.isBroken()); |
454 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
455 |
> |
barrier.reset(); |
456 |
> |
assertFalse(barrier.isBroken()); |
457 |
> |
assertEquals(0, barrier.getNumberWaiting()); |
458 |
|
} |
459 |
|
} |
460 |
|
} |