1 |
dl |
1.1 |
/* |
2 |
dl |
1.6 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
|
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* Expert Group and released to the public domain, as explained at |
4 |
|
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* http://creativecommons.org/licenses/publicdomain |
5 |
jsr166 |
1.9 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
|
* Pat Fisher, Mike Judd. |
7 |
dl |
1.1 |
*/ |
8 |
|
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|
9 |
|
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import junit.framework.*; |
10 |
|
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import java.util.*; |
11 |
|
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import java.util.concurrent.*; |
12 |
dl |
1.8 |
import java.util.concurrent.locks.*; |
13 |
|
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import java.util.concurrent.atomic.*; |
14 |
dl |
1.1 |
|
15 |
jsr166 |
1.11 |
public class CyclicBarrierTest extends JSR166TestCase { |
16 |
dl |
1.1 |
public static void main(String[] args) { |
17 |
jsr166 |
1.12 |
junit.textui.TestRunner.run (suite()); |
18 |
dl |
1.1 |
} |
19 |
|
|
public static Test suite() { |
20 |
jsr166 |
1.12 |
return new TestSuite(CyclicBarrierTest.class); |
21 |
dl |
1.1 |
} |
22 |
dl |
1.3 |
|
23 |
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private volatile int countAction; |
24 |
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private class MyAction implements Runnable { |
25 |
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public void run() { ++countAction; } |
26 |
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} |
27 |
jsr166 |
1.9 |
|
28 |
dl |
1.3 |
/** |
29 |
dl |
1.4 |
* Creating with negative parties throws IAE |
30 |
dl |
1.3 |
*/ |
31 |
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public void testConstructor1() { |
32 |
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try { |
33 |
dl |
1.1 |
new CyclicBarrier(-1, (Runnable)null); |
34 |
dl |
1.3 |
shouldThrow(); |
35 |
jsr166 |
1.11 |
} catch (IllegalArgumentException e) {} |
36 |
dl |
1.1 |
} |
37 |
|
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|
38 |
dl |
1.3 |
/** |
39 |
dl |
1.4 |
* Creating with negative parties and no action throws IAE |
40 |
dl |
1.3 |
*/ |
41 |
|
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public void testConstructor2() { |
42 |
|
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try { |
43 |
dl |
1.1 |
new CyclicBarrier(-1); |
44 |
dl |
1.3 |
shouldThrow(); |
45 |
jsr166 |
1.11 |
} catch (IllegalArgumentException e) {} |
46 |
dl |
1.1 |
} |
47 |
|
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|
48 |
dl |
1.3 |
/** |
49 |
dl |
1.4 |
* getParties returns the number of parties given in constructor |
50 |
dl |
1.3 |
*/ |
51 |
dl |
1.4 |
public void testGetParties() { |
52 |
dl |
1.1 |
CyclicBarrier b = new CyclicBarrier(2); |
53 |
jsr166 |
1.12 |
assertEquals(2, b.getParties()); |
54 |
dl |
1.1 |
assertEquals(0, b.getNumberWaiting()); |
55 |
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} |
56 |
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|
57 |
dl |
1.3 |
/** |
58 |
dl |
1.5 |
* A 1-party barrier triggers after single await |
59 |
dl |
1.3 |
*/ |
60 |
dl |
1.1 |
public void testSingleParty() { |
61 |
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try { |
62 |
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CyclicBarrier b = new CyclicBarrier(1); |
63 |
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assertEquals(1, b.getParties()); |
64 |
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assertEquals(0, b.getNumberWaiting()); |
65 |
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b.await(); |
66 |
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b.await(); |
67 |
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assertEquals(0, b.getNumberWaiting()); |
68 |
|
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} |
69 |
jsr166 |
1.10 |
catch (Exception e) { |
70 |
dl |
1.3 |
unexpectedException(); |
71 |
dl |
1.1 |
} |
72 |
|
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} |
73 |
jsr166 |
1.9 |
|
74 |
dl |
1.3 |
/** |
75 |
dl |
1.4 |
* The supplied barrier action is run at barrier |
76 |
dl |
1.3 |
*/ |
77 |
dl |
1.1 |
public void testBarrierAction() { |
78 |
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try { |
79 |
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countAction = 0; |
80 |
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CyclicBarrier b = new CyclicBarrier(1, new MyAction()); |
81 |
|
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assertEquals(1, b.getParties()); |
82 |
|
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assertEquals(0, b.getNumberWaiting()); |
83 |
|
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b.await(); |
84 |
|
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b.await(); |
85 |
|
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assertEquals(0, b.getNumberWaiting()); |
86 |
|
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assertEquals(countAction, 2); |
87 |
|
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} |
88 |
jsr166 |
1.10 |
catch (Exception e) { |
89 |
dl |
1.3 |
unexpectedException(); |
90 |
dl |
1.1 |
} |
91 |
|
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} |
92 |
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|
93 |
dl |
1.3 |
/** |
94 |
dl |
1.5 |
* A 2-party/thread barrier triggers after both threads invoke await |
95 |
dl |
1.3 |
*/ |
96 |
|
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public void testTwoParties() { |
97 |
dl |
1.1 |
final CyclicBarrier b = new CyclicBarrier(2); |
98 |
jsr166 |
1.12 |
Thread t = new Thread(new Runnable() { |
99 |
|
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public void run() { |
100 |
dl |
1.1 |
try { |
101 |
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b.await(); |
102 |
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b.await(); |
103 |
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b.await(); |
104 |
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b.await(); |
105 |
jsr166 |
1.11 |
} catch (Exception e) { |
106 |
dl |
1.3 |
threadUnexpectedException(); |
107 |
dl |
1.1 |
}}}); |
108 |
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|
109 |
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try { |
110 |
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t.start(); |
111 |
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b.await(); |
112 |
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b.await(); |
113 |
|
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b.await(); |
114 |
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b.await(); |
115 |
|
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t.join(); |
116 |
jsr166 |
1.11 |
} catch (Exception e) { |
117 |
dl |
1.3 |
unexpectedException(); |
118 |
dl |
1.1 |
} |
119 |
|
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} |
120 |
|
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|
121 |
|
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|
122 |
dl |
1.3 |
/** |
123 |
dl |
1.4 |
* An interruption in one party causes others waiting in await to |
124 |
|
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* throw BrokenBarrierException |
125 |
dl |
1.3 |
*/ |
126 |
|
|
public void testAwait1_Interrupted_BrokenBarrier() { |
127 |
dl |
1.1 |
final CyclicBarrier c = new CyclicBarrier(3); |
128 |
|
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Thread t1 = new Thread(new Runnable() { |
129 |
dl |
1.3 |
public void run() { |
130 |
|
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try { |
131 |
dl |
1.1 |
c.await(); |
132 |
dl |
1.3 |
threadShouldThrow(); |
133 |
jsr166 |
1.11 |
} catch (InterruptedException success) {} |
134 |
|
|
catch (Exception b) { |
135 |
dl |
1.4 |
threadUnexpectedException(); |
136 |
dl |
1.1 |
} |
137 |
|
|
} |
138 |
|
|
}); |
139 |
dl |
1.3 |
Thread t2 = new Thread(new Runnable() { |
140 |
|
|
public void run() { |
141 |
|
|
try { |
142 |
dl |
1.1 |
c.await(); |
143 |
jsr166 |
1.9 |
threadShouldThrow(); |
144 |
jsr166 |
1.11 |
} catch (BrokenBarrierException success) { |
145 |
|
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} catch (Exception i) { |
146 |
dl |
1.4 |
threadUnexpectedException(); |
147 |
dl |
1.1 |
} |
148 |
|
|
} |
149 |
|
|
}); |
150 |
|
|
try { |
151 |
|
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t1.start(); |
152 |
|
|
t2.start(); |
153 |
|
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Thread.sleep(SHORT_DELAY_MS); |
154 |
|
|
t1.interrupt(); |
155 |
jsr166 |
1.9 |
t1.join(); |
156 |
dl |
1.1 |
t2.join(); |
157 |
jsr166 |
1.11 |
} catch (InterruptedException e) { |
158 |
dl |
1.3 |
unexpectedException(); |
159 |
dl |
1.1 |
} |
160 |
|
|
} |
161 |
|
|
|
162 |
dl |
1.3 |
/** |
163 |
dl |
1.4 |
* An interruption in one party causes others waiting in timed await to |
164 |
|
|
* throw BrokenBarrierException |
165 |
dl |
1.3 |
*/ |
166 |
|
|
public void testAwait2_Interrupted_BrokenBarrier() { |
167 |
dl |
1.8 |
final CyclicBarrier c = new CyclicBarrier(3); |
168 |
dl |
1.1 |
Thread t1 = new Thread(new Runnable() { |
169 |
dl |
1.3 |
public void run() { |
170 |
|
|
try { |
171 |
dl |
1.7 |
c.await(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
172 |
dl |
1.3 |
threadShouldThrow(); |
173 |
jsr166 |
1.11 |
} catch (InterruptedException success) { |
174 |
|
|
} catch (Exception b) { |
175 |
dl |
1.4 |
threadUnexpectedException(); |
176 |
dl |
1.1 |
} |
177 |
|
|
} |
178 |
|
|
}); |
179 |
dl |
1.3 |
Thread t2 = new Thread(new Runnable() { |
180 |
|
|
public void run() { |
181 |
|
|
try { |
182 |
dl |
1.7 |
c.await(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
183 |
jsr166 |
1.9 |
threadShouldThrow(); |
184 |
jsr166 |
1.11 |
} catch (BrokenBarrierException success) { |
185 |
|
|
} catch (Exception i) { |
186 |
dl |
1.4 |
threadUnexpectedException(); |
187 |
dl |
1.1 |
} |
188 |
|
|
} |
189 |
|
|
}); |
190 |
|
|
try { |
191 |
|
|
t1.start(); |
192 |
|
|
t2.start(); |
193 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
194 |
|
|
t1.interrupt(); |
195 |
jsr166 |
1.9 |
t1.join(); |
196 |
dl |
1.1 |
t2.join(); |
197 |
jsr166 |
1.11 |
} catch (InterruptedException e) { |
198 |
dl |
1.3 |
unexpectedException(); |
199 |
dl |
1.1 |
} |
200 |
|
|
} |
201 |
jsr166 |
1.9 |
|
202 |
dl |
1.3 |
/** |
203 |
dl |
1.4 |
* A timeout in timed await throws TimeoutException |
204 |
dl |
1.3 |
*/ |
205 |
|
|
public void testAwait3_TimeOutException() { |
206 |
dl |
1.1 |
final CyclicBarrier c = new CyclicBarrier(2); |
207 |
|
|
Thread t = new Thread(new Runnable() { |
208 |
dl |
1.3 |
public void run() { |
209 |
|
|
try { |
210 |
dl |
1.1 |
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
211 |
dl |
1.3 |
threadShouldThrow(); |
212 |
jsr166 |
1.11 |
} catch (TimeoutException success) { |
213 |
|
|
} catch (Exception b) { |
214 |
dl |
1.4 |
threadUnexpectedException(); |
215 |
jsr166 |
1.9 |
|
216 |
dl |
1.1 |
} |
217 |
|
|
} |
218 |
|
|
}); |
219 |
|
|
try { |
220 |
|
|
t.start(); |
221 |
jsr166 |
1.9 |
t.join(); |
222 |
jsr166 |
1.11 |
} catch (InterruptedException e) { |
223 |
dl |
1.5 |
unexpectedException(); |
224 |
|
|
} |
225 |
|
|
} |
226 |
|
|
|
227 |
|
|
/** |
228 |
|
|
* A timeout in one party causes others waiting in timed await to |
229 |
|
|
* throw BrokenBarrierException |
230 |
|
|
*/ |
231 |
|
|
public void testAwait4_Timeout_BrokenBarrier() { |
232 |
dl |
1.8 |
final CyclicBarrier c = new CyclicBarrier(3); |
233 |
dl |
1.5 |
Thread t1 = new Thread(new Runnable() { |
234 |
|
|
public void run() { |
235 |
|
|
try { |
236 |
|
|
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
237 |
|
|
threadShouldThrow(); |
238 |
jsr166 |
1.11 |
} catch (TimeoutException success) { |
239 |
|
|
} catch (Exception b) { |
240 |
dl |
1.5 |
threadUnexpectedException(); |
241 |
|
|
} |
242 |
|
|
} |
243 |
|
|
}); |
244 |
|
|
Thread t2 = new Thread(new Runnable() { |
245 |
|
|
public void run() { |
246 |
|
|
try { |
247 |
|
|
c.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
248 |
jsr166 |
1.9 |
threadShouldThrow(); |
249 |
jsr166 |
1.11 |
} catch (BrokenBarrierException success) { |
250 |
|
|
} catch (Exception i) { |
251 |
dl |
1.5 |
threadUnexpectedException(); |
252 |
|
|
} |
253 |
|
|
} |
254 |
|
|
}); |
255 |
|
|
try { |
256 |
|
|
t1.start(); |
257 |
|
|
t2.start(); |
258 |
jsr166 |
1.9 |
t1.join(); |
259 |
dl |
1.5 |
t2.join(); |
260 |
jsr166 |
1.11 |
} catch (InterruptedException e) { |
261 |
dl |
1.5 |
unexpectedException(); |
262 |
|
|
} |
263 |
|
|
} |
264 |
|
|
|
265 |
|
|
/** |
266 |
|
|
* A timeout in one party causes others waiting in await to |
267 |
|
|
* throw BrokenBarrierException |
268 |
|
|
*/ |
269 |
|
|
public void testAwait5_Timeout_BrokenBarrier() { |
270 |
dl |
1.8 |
final CyclicBarrier c = new CyclicBarrier(3); |
271 |
dl |
1.5 |
Thread t1 = new Thread(new Runnable() { |
272 |
|
|
public void run() { |
273 |
|
|
try { |
274 |
|
|
c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
275 |
|
|
threadShouldThrow(); |
276 |
jsr166 |
1.11 |
} catch (TimeoutException success) { |
277 |
|
|
} catch (Exception b) { |
278 |
dl |
1.5 |
threadUnexpectedException(); |
279 |
|
|
} |
280 |
|
|
} |
281 |
|
|
}); |
282 |
|
|
Thread t2 = new Thread(new Runnable() { |
283 |
|
|
public void run() { |
284 |
|
|
try { |
285 |
|
|
c.await(); |
286 |
jsr166 |
1.9 |
threadShouldThrow(); |
287 |
jsr166 |
1.11 |
} catch (BrokenBarrierException success) { |
288 |
|
|
} catch (Exception i) { |
289 |
dl |
1.5 |
threadUnexpectedException(); |
290 |
|
|
} |
291 |
|
|
} |
292 |
|
|
}); |
293 |
|
|
try { |
294 |
|
|
t1.start(); |
295 |
|
|
t2.start(); |
296 |
jsr166 |
1.9 |
t1.join(); |
297 |
dl |
1.5 |
t2.join(); |
298 |
jsr166 |
1.11 |
} catch (InterruptedException e) { |
299 |
dl |
1.3 |
unexpectedException(); |
300 |
dl |
1.1 |
} |
301 |
|
|
} |
302 |
jsr166 |
1.9 |
|
303 |
dl |
1.4 |
/** |
304 |
|
|
* A reset of an active barrier causes waiting threads to throw |
305 |
|
|
* BrokenBarrierException |
306 |
|
|
*/ |
307 |
|
|
public void testReset_BrokenBarrier() { |
308 |
|
|
final CyclicBarrier c = new CyclicBarrier(3); |
309 |
|
|
Thread t1 = new Thread(new Runnable() { |
310 |
|
|
public void run() { |
311 |
|
|
try { |
312 |
|
|
c.await(); |
313 |
|
|
threadShouldThrow(); |
314 |
jsr166 |
1.11 |
} catch (BrokenBarrierException success) {} |
315 |
|
|
catch (Exception b) { |
316 |
dl |
1.4 |
threadUnexpectedException(); |
317 |
|
|
} |
318 |
|
|
} |
319 |
|
|
}); |
320 |
|
|
Thread t2 = new Thread(new Runnable() { |
321 |
|
|
public void run() { |
322 |
|
|
try { |
323 |
|
|
c.await(); |
324 |
jsr166 |
1.9 |
threadShouldThrow(); |
325 |
jsr166 |
1.11 |
} catch (BrokenBarrierException success) { |
326 |
|
|
} catch (Exception i) { |
327 |
dl |
1.4 |
threadUnexpectedException(); |
328 |
|
|
} |
329 |
|
|
} |
330 |
|
|
}); |
331 |
|
|
try { |
332 |
|
|
t1.start(); |
333 |
|
|
t2.start(); |
334 |
|
|
Thread.sleep(SHORT_DELAY_MS); |
335 |
|
|
c.reset(); |
336 |
jsr166 |
1.9 |
t1.join(); |
337 |
dl |
1.4 |
t2.join(); |
338 |
jsr166 |
1.11 |
} catch (InterruptedException e) { |
339 |
dl |
1.4 |
unexpectedException(); |
340 |
|
|
} |
341 |
|
|
} |
342 |
|
|
|
343 |
|
|
/** |
344 |
|
|
* A reset before threads enter barrier does not throw |
345 |
|
|
* BrokenBarrierException |
346 |
|
|
*/ |
347 |
|
|
public void testReset_NoBrokenBarrier() { |
348 |
|
|
final CyclicBarrier c = new CyclicBarrier(3); |
349 |
|
|
Thread t1 = new Thread(new Runnable() { |
350 |
|
|
public void run() { |
351 |
|
|
try { |
352 |
|
|
c.await(); |
353 |
jsr166 |
1.11 |
} catch (Exception b) { |
354 |
dl |
1.4 |
threadUnexpectedException(); |
355 |
|
|
} |
356 |
|
|
} |
357 |
|
|
}); |
358 |
|
|
Thread t2 = new Thread(new Runnable() { |
359 |
|
|
public void run() { |
360 |
|
|
try { |
361 |
|
|
c.await(); |
362 |
jsr166 |
1.11 |
} catch (Exception i) { |
363 |
dl |
1.4 |
threadUnexpectedException(); |
364 |
|
|
} |
365 |
|
|
} |
366 |
|
|
}); |
367 |
|
|
try { |
368 |
|
|
c.reset(); |
369 |
|
|
t1.start(); |
370 |
|
|
t2.start(); |
371 |
|
|
c.await(); |
372 |
jsr166 |
1.9 |
t1.join(); |
373 |
dl |
1.4 |
t2.join(); |
374 |
jsr166 |
1.11 |
} catch (Exception e) { |
375 |
dl |
1.4 |
unexpectedException(); |
376 |
|
|
} |
377 |
|
|
} |
378 |
|
|
|
379 |
dl |
1.8 |
/** |
380 |
|
|
* All threads block while a barrier is broken. |
381 |
|
|
*/ |
382 |
|
|
public void testReset_Leakage() { |
383 |
|
|
try { |
384 |
|
|
final CyclicBarrier c = new CyclicBarrier(2); |
385 |
|
|
final AtomicBoolean done = new AtomicBoolean(); |
386 |
|
|
Thread t = new Thread() { |
387 |
|
|
public void run() { |
388 |
|
|
while (!done.get()) { |
389 |
|
|
try { |
390 |
|
|
while (c.isBroken()) |
391 |
|
|
c.reset(); |
392 |
jsr166 |
1.9 |
|
393 |
dl |
1.8 |
c.await(); |
394 |
|
|
threadFail("await should not return"); |
395 |
|
|
} |
396 |
|
|
catch (BrokenBarrierException e) { |
397 |
|
|
} |
398 |
|
|
catch (InterruptedException ie) { |
399 |
|
|
} |
400 |
|
|
} |
401 |
|
|
} |
402 |
|
|
}; |
403 |
jsr166 |
1.9 |
|
404 |
dl |
1.8 |
t.start(); |
405 |
jsr166 |
1.10 |
for ( int i = 0; i < 4; i++) { |
406 |
dl |
1.8 |
Thread.sleep(SHORT_DELAY_MS); |
407 |
|
|
t.interrupt(); |
408 |
|
|
} |
409 |
|
|
done.set(true); |
410 |
|
|
t.interrupt(); |
411 |
|
|
} |
412 |
|
|
catch (Exception ex) { |
413 |
|
|
unexpectedException(); |
414 |
|
|
} |
415 |
|
|
} |
416 |
|
|
|
417 |
|
|
/** |
418 |
|
|
* Reset of a non-broken barrier does not break barrier |
419 |
|
|
*/ |
420 |
|
|
public void testResetWithoutBreakage() { |
421 |
|
|
try { |
422 |
|
|
final CyclicBarrier start = new CyclicBarrier(3); |
423 |
|
|
final CyclicBarrier barrier = new CyclicBarrier(3); |
424 |
|
|
for (int i = 0; i < 3; i++) { |
425 |
|
|
Thread t1 = new Thread(new Runnable() { |
426 |
|
|
public void run() { |
427 |
|
|
try { start.await(); } |
428 |
jsr166 |
1.9 |
catch (Exception ie) { |
429 |
|
|
threadFail("start barrier"); |
430 |
dl |
1.8 |
} |
431 |
|
|
try { barrier.await(); } |
432 |
jsr166 |
1.9 |
catch (Throwable thrown) { |
433 |
|
|
unexpectedException(); |
434 |
dl |
1.8 |
}}}); |
435 |
jsr166 |
1.9 |
|
436 |
dl |
1.8 |
Thread t2 = new Thread(new Runnable() { |
437 |
|
|
public void run() { |
438 |
|
|
try { start.await(); } |
439 |
jsr166 |
1.9 |
catch (Exception ie) { |
440 |
|
|
threadFail("start barrier"); |
441 |
dl |
1.8 |
} |
442 |
|
|
try { barrier.await(); } |
443 |
jsr166 |
1.9 |
catch (Throwable thrown) { |
444 |
|
|
unexpectedException(); |
445 |
dl |
1.8 |
}}}); |
446 |
jsr166 |
1.9 |
|
447 |
|
|
|
448 |
dl |
1.8 |
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(); |
464 |
|
|
} |
465 |
|
|
} |
466 |
jsr166 |
1.9 |
|
467 |
dl |
1.8 |
/** |
468 |
|
|
* Reset of a barrier after interruption reinitializes it. |
469 |
|
|
*/ |
470 |
|
|
public void testResetAfterInterrupt() { |
471 |
|
|
try { |
472 |
|
|
final CyclicBarrier start = new CyclicBarrier(3); |
473 |
|
|
final CyclicBarrier barrier = new CyclicBarrier(3); |
474 |
|
|
for (int i = 0; i < 2; i++) { |
475 |
|
|
Thread t1 = new Thread(new Runnable() { |
476 |
|
|
public void run() { |
477 |
|
|
try { start.await(); } |
478 |
jsr166 |
1.9 |
catch (Exception ie) { |
479 |
|
|
threadFail("start barrier"); |
480 |
dl |
1.8 |
} |
481 |
|
|
try { barrier.await(); } |
482 |
jsr166 |
1.10 |
catch (InterruptedException ok) {} |
483 |
jsr166 |
1.9 |
catch (Throwable thrown) { |
484 |
|
|
unexpectedException(); |
485 |
dl |
1.8 |
}}}); |
486 |
jsr166 |
1.9 |
|
487 |
dl |
1.8 |
Thread t2 = new Thread(new Runnable() { |
488 |
|
|
public void run() { |
489 |
|
|
try { start.await(); } |
490 |
jsr166 |
1.9 |
catch (Exception ie) { |
491 |
|
|
threadFail("start barrier"); |
492 |
dl |
1.8 |
} |
493 |
|
|
try { barrier.await(); } |
494 |
jsr166 |
1.10 |
catch (BrokenBarrierException ok) {} |
495 |
jsr166 |
1.9 |
catch (Throwable thrown) { |
496 |
|
|
unexpectedException(); |
497 |
dl |
1.8 |
}}}); |
498 |
jsr166 |
1.9 |
|
499 |
dl |
1.8 |
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(); |
515 |
|
|
} |
516 |
|
|
} |
517 |
jsr166 |
1.9 |
|
518 |
dl |
1.8 |
/** |
519 |
|
|
* Reset of a barrier after timeout reinitializes it. |
520 |
|
|
*/ |
521 |
|
|
public void testResetAfterTimeout() { |
522 |
|
|
try { |
523 |
|
|
final CyclicBarrier start = new CyclicBarrier(3); |
524 |
|
|
final CyclicBarrier barrier = new CyclicBarrier(3); |
525 |
|
|
for (int i = 0; i < 2; i++) { |
526 |
|
|
Thread t1 = new Thread(new Runnable() { |
527 |
|
|
public void run() { |
528 |
|
|
try { start.await(); } |
529 |
jsr166 |
1.9 |
catch (Exception ie) { |
530 |
|
|
threadFail("start barrier"); |
531 |
dl |
1.8 |
} |
532 |
|
|
try { barrier.await(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); } |
533 |
jsr166 |
1.10 |
catch (TimeoutException ok) {} |
534 |
jsr166 |
1.9 |
catch (Throwable thrown) { |
535 |
|
|
unexpectedException(); |
536 |
dl |
1.8 |
}}}); |
537 |
jsr166 |
1.9 |
|
538 |
dl |
1.8 |
Thread t2 = new Thread(new Runnable() { |
539 |
|
|
public void run() { |
540 |
|
|
try { start.await(); } |
541 |
jsr166 |
1.9 |
catch (Exception ie) { |
542 |
|
|
threadFail("start barrier"); |
543 |
dl |
1.8 |
} |
544 |
|
|
try { barrier.await(); } |
545 |
jsr166 |
1.10 |
catch (BrokenBarrierException ok) {} |
546 |
jsr166 |
1.9 |
catch (Throwable thrown) { |
547 |
|
|
unexpectedException(); |
548 |
dl |
1.8 |
}}}); |
549 |
jsr166 |
1.9 |
|
550 |
dl |
1.8 |
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(); |
565 |
|
|
} |
566 |
|
|
} |
567 |
|
|
|
568 |
jsr166 |
1.9 |
|
569 |
dl |
1.8 |
/** |
570 |
|
|
* Reset of a barrier after a failed command reinitializes it. |
571 |
|
|
*/ |
572 |
|
|
public void testResetAfterCommandException() { |
573 |
|
|
try { |
574 |
|
|
final CyclicBarrier start = new CyclicBarrier(3); |
575 |
jsr166 |
1.9 |
final CyclicBarrier barrier = |
576 |
dl |
1.8 |
new CyclicBarrier(3, new Runnable() { |
577 |
jsr166 |
1.9 |
public void run() { |
578 |
dl |
1.8 |
throw new NullPointerException(); }}); |
579 |
|
|
for (int i = 0; i < 2; i++) { |
580 |
|
|
Thread t1 = new Thread(new Runnable() { |
581 |
|
|
public void run() { |
582 |
|
|
try { start.await(); } |
583 |
jsr166 |
1.9 |
catch (Exception ie) { |
584 |
|
|
threadFail("start barrier"); |
585 |
dl |
1.8 |
} |
586 |
|
|
try { barrier.await(); } |
587 |
jsr166 |
1.10 |
catch (BrokenBarrierException ok) {} |
588 |
jsr166 |
1.9 |
catch (Throwable thrown) { |
589 |
|
|
unexpectedException(); |
590 |
dl |
1.8 |
}}}); |
591 |
jsr166 |
1.9 |
|
592 |
dl |
1.8 |
Thread t2 = new Thread(new Runnable() { |
593 |
|
|
public void run() { |
594 |
|
|
try { start.await(); } |
595 |
jsr166 |
1.9 |
catch (Exception ie) { |
596 |
|
|
threadFail("start barrier"); |
597 |
dl |
1.8 |
} |
598 |
|
|
try { barrier.await(); } |
599 |
jsr166 |
1.10 |
catch (BrokenBarrierException ok) {} |
600 |
jsr166 |
1.9 |
catch (Throwable thrown) { |
601 |
|
|
unexpectedException(); |
602 |
dl |
1.8 |
}}}); |
603 |
jsr166 |
1.9 |
|
604 |
dl |
1.8 |
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(); |
622 |
|
|
} |
623 |
|
|
} |
624 |
dl |
1.1 |
} |