1 |
dl |
1.1 |
/* |
2 |
dl |
1.7 |
* 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 |
jsr166 |
1.31 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.10 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
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* 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 |
jsr166 |
1.13 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
13 |
dl |
1.2 |
import java.io.*; |
14 |
dl |
1.1 |
|
15 |
dl |
1.3 |
public class SynchronousQueueTest extends JSR166TestCase { |
16 |
dl |
1.1 |
|
17 |
jsr166 |
1.25 |
public static class Fair extends BlockingQueueTest { |
18 |
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protected BlockingQueue emptyCollection() { |
19 |
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return new SynchronousQueue(true); |
20 |
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} |
21 |
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} |
22 |
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23 |
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public static class NonFair extends BlockingQueueTest { |
24 |
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protected BlockingQueue emptyCollection() { |
25 |
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return new SynchronousQueue(false); |
26 |
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} |
27 |
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} |
28 |
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|
29 |
dl |
1.1 |
public static void main(String[] args) { |
30 |
jsr166 |
1.21 |
junit.textui.TestRunner.run(suite()); |
31 |
dl |
1.1 |
} |
32 |
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|
33 |
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public static Test suite() { |
34 |
jsr166 |
1.25 |
return newTestSuite(SynchronousQueueTest.class, |
35 |
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new Fair().testSuite(), |
36 |
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new NonFair().testSuite()); |
37 |
dl |
1.1 |
} |
38 |
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|
39 |
dl |
1.4 |
/** |
40 |
jsr166 |
1.29 |
* Any SynchronousQueue is both empty and full |
41 |
dl |
1.4 |
*/ |
42 |
jsr166 |
1.29 |
public void testEmptyFull(SynchronousQueue q) { |
43 |
dl |
1.1 |
assertTrue(q.isEmpty()); |
44 |
jsr166 |
1.14 |
assertEquals(0, q.size()); |
45 |
dl |
1.1 |
assertEquals(0, q.remainingCapacity()); |
46 |
dl |
1.5 |
assertFalse(q.offer(zero)); |
47 |
dl |
1.1 |
} |
48 |
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|
49 |
dl |
1.4 |
/** |
50 |
jsr166 |
1.29 |
* A non-fair SynchronousQueue is both empty and full |
51 |
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*/ |
52 |
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public void testEmptyFull() { |
53 |
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testEmptyFull(new SynchronousQueue()); |
54 |
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} |
55 |
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56 |
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/** |
57 |
dl |
1.8 |
* A fair SynchronousQueue is both empty and full |
58 |
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*/ |
59 |
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public void testFairEmptyFull() { |
60 |
jsr166 |
1.29 |
testEmptyFull(new SynchronousQueue(true)); |
61 |
dl |
1.8 |
} |
62 |
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|
63 |
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/** |
64 |
dl |
1.5 |
* offer(null) throws NPE |
65 |
dl |
1.4 |
*/ |
66 |
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public void testOfferNull() { |
67 |
jsr166 |
1.14 |
try { |
68 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
69 |
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q.offer(null); |
70 |
dl |
1.4 |
shouldThrow(); |
71 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
72 |
dl |
1.1 |
} |
73 |
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|
74 |
dl |
1.4 |
/** |
75 |
dl |
1.6 |
* add(null) throws NPE |
76 |
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*/ |
77 |
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public void testAddNull() { |
78 |
jsr166 |
1.14 |
try { |
79 |
dl |
1.6 |
SynchronousQueue q = new SynchronousQueue(); |
80 |
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q.add(null); |
81 |
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shouldThrow(); |
82 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
83 |
dl |
1.6 |
} |
84 |
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|
85 |
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/** |
86 |
dl |
1.5 |
* offer fails if no active taker |
87 |
dl |
1.4 |
*/ |
88 |
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public void testOffer() { |
89 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
90 |
dl |
1.5 |
assertFalse(q.offer(one)); |
91 |
dl |
1.1 |
} |
92 |
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|
93 |
dl |
1.4 |
/** |
94 |
dl |
1.5 |
* add throws ISE if no active taker |
95 |
dl |
1.4 |
*/ |
96 |
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public void testAdd() { |
97 |
jsr166 |
1.14 |
try { |
98 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
99 |
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assertEquals(0, q.remainingCapacity()); |
100 |
dl |
1.5 |
q.add(one); |
101 |
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shouldThrow(); |
102 |
jsr166 |
1.13 |
} catch (IllegalStateException success) {} |
103 |
dl |
1.1 |
} |
104 |
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|
105 |
dl |
1.4 |
/** |
106 |
dl |
1.5 |
* addAll(null) throws NPE |
107 |
dl |
1.4 |
*/ |
108 |
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public void testAddAll1() { |
109 |
dl |
1.1 |
try { |
110 |
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SynchronousQueue q = new SynchronousQueue(); |
111 |
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q.addAll(null); |
112 |
dl |
1.4 |
shouldThrow(); |
113 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
114 |
dl |
1.1 |
} |
115 |
dl |
1.6 |
|
116 |
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/** |
117 |
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* addAll(this) throws IAE |
118 |
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*/ |
119 |
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public void testAddAllSelf() { |
120 |
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try { |
121 |
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SynchronousQueue q = new SynchronousQueue(); |
122 |
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q.addAll(q); |
123 |
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shouldThrow(); |
124 |
jsr166 |
1.13 |
} catch (IllegalArgumentException success) {} |
125 |
dl |
1.6 |
} |
126 |
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|
127 |
dl |
1.4 |
/** |
128 |
dl |
1.5 |
* addAll of a collection with null elements throws NPE |
129 |
dl |
1.4 |
*/ |
130 |
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public void testAddAll2() { |
131 |
dl |
1.1 |
try { |
132 |
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SynchronousQueue q = new SynchronousQueue(); |
133 |
dl |
1.3 |
Integer[] ints = new Integer[1]; |
134 |
dl |
1.1 |
q.addAll(Arrays.asList(ints)); |
135 |
dl |
1.4 |
shouldThrow(); |
136 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
137 |
dl |
1.1 |
} |
138 |
jsr166 |
1.22 |
|
139 |
dl |
1.4 |
/** |
140 |
dl |
1.5 |
* addAll throws ISE if no active taker |
141 |
dl |
1.4 |
*/ |
142 |
|
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public void testAddAll4() { |
143 |
dl |
1.1 |
try { |
144 |
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SynchronousQueue q = new SynchronousQueue(); |
145 |
dl |
1.3 |
Integer[] ints = new Integer[1]; |
146 |
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for (int i = 0; i < 1; ++i) |
147 |
dl |
1.1 |
ints[i] = new Integer(i); |
148 |
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q.addAll(Arrays.asList(ints)); |
149 |
dl |
1.4 |
shouldThrow(); |
150 |
jsr166 |
1.13 |
} catch (IllegalStateException success) {} |
151 |
dl |
1.1 |
} |
152 |
|
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|
153 |
dl |
1.4 |
/** |
154 |
dl |
1.5 |
* put(null) throws NPE |
155 |
dl |
1.4 |
*/ |
156 |
jsr166 |
1.13 |
public void testPutNull() throws InterruptedException { |
157 |
jsr166 |
1.14 |
try { |
158 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
159 |
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q.put(null); |
160 |
dl |
1.4 |
shouldThrow(); |
161 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
162 |
jsr166 |
1.32 |
} |
163 |
dl |
1.1 |
|
164 |
dl |
1.4 |
/** |
165 |
dl |
1.5 |
* put blocks interruptibly if no active taker |
166 |
dl |
1.4 |
*/ |
167 |
jsr166 |
1.13 |
public void testBlockingPut() throws InterruptedException { |
168 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
169 |
|
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public void realRun() throws InterruptedException { |
170 |
jsr166 |
1.13 |
SynchronousQueue q = new SynchronousQueue(); |
171 |
|
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q.put(zero); |
172 |
|
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}}); |
173 |
|
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|
174 |
dl |
1.1 |
t.start(); |
175 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
176 |
jsr166 |
1.13 |
t.interrupt(); |
177 |
|
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t.join(); |
178 |
dl |
1.1 |
} |
179 |
|
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|
180 |
dl |
1.4 |
/** |
181 |
jsr166 |
1.10 |
* put blocks waiting for take |
182 |
dl |
1.4 |
*/ |
183 |
jsr166 |
1.13 |
public void testPutWithTake() throws InterruptedException { |
184 |
dl |
1.1 |
final SynchronousQueue q = new SynchronousQueue(); |
185 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
186 |
|
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public void realRun() throws InterruptedException { |
187 |
jsr166 |
1.13 |
int added = 0; |
188 |
|
|
try { |
189 |
jsr166 |
1.19 |
while (true) { |
190 |
|
|
q.put(added); |
191 |
|
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++added; |
192 |
|
|
} |
193 |
jsr166 |
1.13 |
} catch (InterruptedException success) { |
194 |
jsr166 |
1.23 |
assertEquals(1, added); |
195 |
dl |
1.1 |
} |
196 |
jsr166 |
1.13 |
}}); |
197 |
|
|
|
198 |
|
|
t.start(); |
199 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
200 |
jsr166 |
1.19 |
assertEquals(0, q.take()); |
201 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
202 |
jsr166 |
1.13 |
t.interrupt(); |
203 |
|
|
t.join(); |
204 |
dl |
1.1 |
} |
205 |
|
|
|
206 |
dl |
1.4 |
/** |
207 |
dl |
1.5 |
* timed offer times out if elements not taken |
208 |
dl |
1.4 |
*/ |
209 |
jsr166 |
1.29 |
public void testTimedOffer(final SynchronousQueue q) |
210 |
|
|
throws InterruptedException { |
211 |
|
|
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
212 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
213 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
214 |
jsr166 |
1.34 |
long startTime = System.nanoTime(); |
215 |
|
|
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
216 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
217 |
jsr166 |
1.29 |
pleaseInterrupt.countDown(); |
218 |
|
|
try { |
219 |
jsr166 |
1.34 |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
220 |
jsr166 |
1.29 |
shouldThrow(); |
221 |
|
|
} catch (InterruptedException success) {} |
222 |
jsr166 |
1.13 |
}}); |
223 |
jsr166 |
1.10 |
|
224 |
jsr166 |
1.34 |
await(pleaseInterrupt); |
225 |
jsr166 |
1.13 |
t.interrupt(); |
226 |
jsr166 |
1.34 |
awaitTermination(t); |
227 |
jsr166 |
1.29 |
} |
228 |
|
|
|
229 |
|
|
/** |
230 |
|
|
* timed offer times out if elements not taken |
231 |
|
|
*/ |
232 |
|
|
public void testTimedOffer() throws InterruptedException { |
233 |
|
|
testTimedOffer(new SynchronousQueue()); |
234 |
|
|
} |
235 |
|
|
|
236 |
|
|
/** |
237 |
|
|
* timed offer times out if elements not taken |
238 |
|
|
*/ |
239 |
|
|
public void testFairTimedOffer() throws InterruptedException { |
240 |
|
|
testTimedOffer(new SynchronousQueue(true)); |
241 |
dl |
1.1 |
} |
242 |
|
|
|
243 |
dl |
1.8 |
/** |
244 |
|
|
* put blocks interruptibly if no active taker |
245 |
|
|
*/ |
246 |
jsr166 |
1.13 |
public void testFairBlockingPut() throws InterruptedException { |
247 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
248 |
|
|
public void realRun() throws InterruptedException { |
249 |
jsr166 |
1.13 |
SynchronousQueue q = new SynchronousQueue(true); |
250 |
|
|
q.put(zero); |
251 |
|
|
}}); |
252 |
|
|
|
253 |
dl |
1.8 |
t.start(); |
254 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
255 |
jsr166 |
1.13 |
t.interrupt(); |
256 |
|
|
t.join(); |
257 |
dl |
1.8 |
} |
258 |
|
|
|
259 |
|
|
/** |
260 |
jsr166 |
1.10 |
* put blocks waiting for take |
261 |
dl |
1.8 |
*/ |
262 |
jsr166 |
1.13 |
public void testFairPutWithTake() throws InterruptedException { |
263 |
dl |
1.8 |
final SynchronousQueue q = new SynchronousQueue(true); |
264 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
265 |
|
|
public void realRun() throws InterruptedException { |
266 |
jsr166 |
1.13 |
int added = 0; |
267 |
|
|
try { |
268 |
jsr166 |
1.19 |
while (true) { |
269 |
|
|
q.put(added); |
270 |
|
|
++added; |
271 |
|
|
} |
272 |
jsr166 |
1.13 |
} catch (InterruptedException success) { |
273 |
jsr166 |
1.23 |
assertEquals(1, added); |
274 |
dl |
1.8 |
} |
275 |
jsr166 |
1.13 |
}}); |
276 |
|
|
|
277 |
|
|
t.start(); |
278 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
279 |
jsr166 |
1.19 |
assertEquals(0, q.take()); |
280 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
281 |
jsr166 |
1.13 |
t.interrupt(); |
282 |
|
|
t.join(); |
283 |
dl |
1.8 |
} |
284 |
|
|
|
285 |
|
|
/** |
286 |
|
|
* take blocks interruptibly when empty |
287 |
|
|
*/ |
288 |
jsr166 |
1.13 |
public void testFairTakeFromEmpty() throws InterruptedException { |
289 |
dl |
1.8 |
final SynchronousQueue q = new SynchronousQueue(true); |
290 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
291 |
|
|
public void realRun() throws InterruptedException { |
292 |
jsr166 |
1.13 |
q.take(); |
293 |
|
|
}}); |
294 |
|
|
|
295 |
|
|
t.start(); |
296 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
297 |
jsr166 |
1.13 |
t.interrupt(); |
298 |
|
|
t.join(); |
299 |
dl |
1.8 |
} |
300 |
|
|
|
301 |
dl |
1.4 |
/** |
302 |
jsr166 |
1.29 |
* poll return null if no active putter |
303 |
dl |
1.4 |
*/ |
304 |
|
|
public void testPoll() { |
305 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
306 |
jsr166 |
1.14 |
assertNull(q.poll()); |
307 |
dl |
1.1 |
} |
308 |
|
|
|
309 |
dl |
1.4 |
/** |
310 |
jsr166 |
1.29 |
* timed poll with zero timeout times out if no active putter |
311 |
dl |
1.4 |
*/ |
312 |
jsr166 |
1.13 |
public void testTimedPoll0() throws InterruptedException { |
313 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
314 |
|
|
assertNull(q.poll(0, MILLISECONDS)); |
315 |
dl |
1.1 |
} |
316 |
|
|
|
317 |
dl |
1.4 |
/** |
318 |
jsr166 |
1.29 |
* timed poll with nonzero timeout times out if no active putter |
319 |
dl |
1.4 |
*/ |
320 |
jsr166 |
1.13 |
public void testTimedPoll() throws InterruptedException { |
321 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
322 |
jsr166 |
1.29 |
long t0 = System.nanoTime(); |
323 |
jsr166 |
1.13 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
324 |
jsr166 |
1.29 |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
325 |
dl |
1.1 |
} |
326 |
|
|
|
327 |
dl |
1.4 |
/** |
328 |
dl |
1.5 |
* Interrupted timed poll throws InterruptedException instead of |
329 |
|
|
* returning timeout status |
330 |
dl |
1.4 |
*/ |
331 |
jsr166 |
1.29 |
public void testInterruptedTimedPoll(final SynchronousQueue q) |
332 |
|
|
throws InterruptedException { |
333 |
|
|
final CountDownLatch threadStarted = new CountDownLatch(1); |
334 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
335 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
336 |
jsr166 |
1.29 |
long t0 = System.nanoTime(); |
337 |
|
|
threadStarted.countDown(); |
338 |
|
|
try { |
339 |
|
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
340 |
|
|
shouldThrow(); |
341 |
|
|
} catch (InterruptedException success) {} |
342 |
|
|
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
343 |
|
|
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
344 |
jsr166 |
1.13 |
}}); |
345 |
|
|
|
346 |
jsr166 |
1.29 |
threadStarted.await(); |
347 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
348 |
jsr166 |
1.13 |
t.interrupt(); |
349 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
350 |
|
|
} |
351 |
|
|
|
352 |
|
|
/** |
353 |
|
|
* Interrupted timed poll throws InterruptedException instead of |
354 |
|
|
* returning timeout status |
355 |
|
|
*/ |
356 |
|
|
public void testInterruptedTimedPoll() throws InterruptedException { |
357 |
|
|
testInterruptedTimedPoll(new SynchronousQueue()); |
358 |
dl |
1.1 |
} |
359 |
|
|
|
360 |
dl |
1.4 |
/** |
361 |
dl |
1.8 |
* Interrupted timed poll throws InterruptedException instead of |
362 |
|
|
* returning timeout status |
363 |
|
|
*/ |
364 |
jsr166 |
1.13 |
public void testFairInterruptedTimedPoll() throws InterruptedException { |
365 |
jsr166 |
1.29 |
testInterruptedTimedPoll(new SynchronousQueue(true)); |
366 |
dl |
1.8 |
} |
367 |
|
|
|
368 |
|
|
/** |
369 |
jsr166 |
1.29 |
* timed poll before a delayed offer times out, returning null; |
370 |
|
|
* after offer succeeds; on interruption throws |
371 |
dl |
1.8 |
*/ |
372 |
jsr166 |
1.13 |
public void testFairTimedPollWithOffer() throws InterruptedException { |
373 |
dl |
1.8 |
final SynchronousQueue q = new SynchronousQueue(true); |
374 |
jsr166 |
1.29 |
final CountDownLatch pleaseOffer = new CountDownLatch(1); |
375 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
376 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
377 |
jsr166 |
1.29 |
long t0 = System.nanoTime(); |
378 |
|
|
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
379 |
|
|
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
380 |
|
|
|
381 |
|
|
pleaseOffer.countDown(); |
382 |
|
|
t0 = System.nanoTime(); |
383 |
|
|
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
384 |
|
|
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
385 |
|
|
|
386 |
|
|
t0 = System.nanoTime(); |
387 |
jsr166 |
1.13 |
try { |
388 |
|
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
389 |
jsr166 |
1.29 |
shouldThrow(); |
390 |
jsr166 |
1.13 |
} catch (InterruptedException success) {} |
391 |
jsr166 |
1.29 |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
392 |
jsr166 |
1.13 |
}}); |
393 |
|
|
|
394 |
jsr166 |
1.29 |
assertTrue(pleaseOffer.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
395 |
|
|
long t0 = System.nanoTime(); |
396 |
|
|
assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); |
397 |
|
|
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
398 |
jsr166 |
1.30 |
|
399 |
jsr166 |
1.13 |
t.interrupt(); |
400 |
jsr166 |
1.29 |
awaitTermination(t, MEDIUM_DELAY_MS); |
401 |
jsr166 |
1.10 |
} |
402 |
dl |
1.1 |
|
403 |
dl |
1.4 |
/** |
404 |
jsr166 |
1.29 |
* peek() returns null if no active putter |
405 |
dl |
1.4 |
*/ |
406 |
|
|
public void testPeek() { |
407 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
408 |
jsr166 |
1.14 |
assertNull(q.peek()); |
409 |
dl |
1.1 |
} |
410 |
|
|
|
411 |
dl |
1.4 |
/** |
412 |
jsr166 |
1.29 |
* element() throws NSEE if no active putter |
413 |
dl |
1.4 |
*/ |
414 |
|
|
public void testElement() { |
415 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
416 |
|
|
try { |
417 |
|
|
q.element(); |
418 |
dl |
1.4 |
shouldThrow(); |
419 |
jsr166 |
1.13 |
} catch (NoSuchElementException success) {} |
420 |
dl |
1.1 |
} |
421 |
|
|
|
422 |
dl |
1.4 |
/** |
423 |
jsr166 |
1.29 |
* remove() throws NSEE if no active putter |
424 |
dl |
1.4 |
*/ |
425 |
|
|
public void testRemove() { |
426 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
427 |
|
|
try { |
428 |
|
|
q.remove(); |
429 |
dl |
1.4 |
shouldThrow(); |
430 |
jsr166 |
1.16 |
} catch (NoSuchElementException success) {} |
431 |
dl |
1.1 |
} |
432 |
|
|
|
433 |
dl |
1.4 |
/** |
434 |
dl |
1.5 |
* remove(x) returns false |
435 |
dl |
1.4 |
*/ |
436 |
|
|
public void testRemoveElement() { |
437 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
438 |
dl |
1.5 |
assertFalse(q.remove(zero)); |
439 |
dl |
1.2 |
assertTrue(q.isEmpty()); |
440 |
dl |
1.1 |
} |
441 |
jsr166 |
1.10 |
|
442 |
dl |
1.4 |
/** |
443 |
dl |
1.5 |
* contains returns false |
444 |
dl |
1.4 |
*/ |
445 |
|
|
public void testContains() { |
446 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
447 |
dl |
1.5 |
assertFalse(q.contains(zero)); |
448 |
dl |
1.1 |
} |
449 |
|
|
|
450 |
dl |
1.4 |
/** |
451 |
dl |
1.5 |
* clear ensures isEmpty |
452 |
dl |
1.4 |
*/ |
453 |
|
|
public void testClear() { |
454 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
455 |
|
|
q.clear(); |
456 |
|
|
assertTrue(q.isEmpty()); |
457 |
|
|
} |
458 |
|
|
|
459 |
dl |
1.4 |
/** |
460 |
dl |
1.5 |
* containsAll returns false unless empty |
461 |
dl |
1.4 |
*/ |
462 |
|
|
public void testContainsAll() { |
463 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
464 |
|
|
Integer[] empty = new Integer[0]; |
465 |
dl |
1.5 |
assertTrue(q.containsAll(Arrays.asList(empty))); |
466 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
467 |
dl |
1.1 |
assertFalse(q.containsAll(Arrays.asList(ints))); |
468 |
|
|
} |
469 |
|
|
|
470 |
dl |
1.4 |
/** |
471 |
dl |
1.5 |
* retainAll returns false |
472 |
dl |
1.4 |
*/ |
473 |
|
|
public void testRetainAll() { |
474 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
475 |
|
|
Integer[] empty = new Integer[0]; |
476 |
dl |
1.5 |
assertFalse(q.retainAll(Arrays.asList(empty))); |
477 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
478 |
|
|
assertFalse(q.retainAll(Arrays.asList(ints))); |
479 |
dl |
1.1 |
} |
480 |
|
|
|
481 |
dl |
1.4 |
/** |
482 |
dl |
1.5 |
* removeAll returns false |
483 |
dl |
1.4 |
*/ |
484 |
|
|
public void testRemoveAll() { |
485 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
486 |
|
|
Integer[] empty = new Integer[0]; |
487 |
dl |
1.5 |
assertFalse(q.removeAll(Arrays.asList(empty))); |
488 |
|
|
Integer[] ints = new Integer[1]; ints[0] = zero; |
489 |
dl |
1.1 |
assertFalse(q.containsAll(Arrays.asList(ints))); |
490 |
|
|
} |
491 |
|
|
|
492 |
|
|
|
493 |
dl |
1.4 |
/** |
494 |
dl |
1.5 |
* toArray is empty |
495 |
dl |
1.4 |
*/ |
496 |
|
|
public void testToArray() { |
497 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
498 |
jsr166 |
1.14 |
Object[] o = q.toArray(); |
499 |
dl |
1.1 |
assertEquals(o.length, 0); |
500 |
|
|
} |
501 |
|
|
|
502 |
dl |
1.4 |
/** |
503 |
dl |
1.5 |
* toArray(a) is nulled at position 0 |
504 |
dl |
1.4 |
*/ |
505 |
|
|
public void testToArray2() { |
506 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
507 |
jsr166 |
1.14 |
Integer[] ints = new Integer[1]; |
508 |
dl |
1.1 |
assertNull(ints[0]); |
509 |
|
|
} |
510 |
jsr166 |
1.10 |
|
511 |
dl |
1.4 |
/** |
512 |
dl |
1.6 |
* toArray(null) throws NPE |
513 |
|
|
*/ |
514 |
|
|
public void testToArray_BadArg() { |
515 |
jsr166 |
1.18 |
SynchronousQueue q = new SynchronousQueue(); |
516 |
jsr166 |
1.14 |
try { |
517 |
|
|
Object o[] = q.toArray(null); |
518 |
|
|
shouldThrow(); |
519 |
|
|
} catch (NullPointerException success) {} |
520 |
dl |
1.6 |
} |
521 |
|
|
|
522 |
|
|
|
523 |
|
|
/** |
524 |
dl |
1.5 |
* iterator does not traverse any elements |
525 |
dl |
1.4 |
*/ |
526 |
|
|
public void testIterator() { |
527 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
528 |
jsr166 |
1.14 |
Iterator it = q.iterator(); |
529 |
dl |
1.1 |
assertFalse(it.hasNext()); |
530 |
|
|
try { |
531 |
|
|
Object x = it.next(); |
532 |
dl |
1.4 |
shouldThrow(); |
533 |
jsr166 |
1.13 |
} catch (NoSuchElementException success) {} |
534 |
dl |
1.1 |
} |
535 |
|
|
|
536 |
dl |
1.4 |
/** |
537 |
dl |
1.5 |
* iterator remove throws ISE |
538 |
dl |
1.4 |
*/ |
539 |
|
|
public void testIteratorRemove() { |
540 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
541 |
jsr166 |
1.14 |
Iterator it = q.iterator(); |
542 |
dl |
1.1 |
try { |
543 |
|
|
it.remove(); |
544 |
dl |
1.4 |
shouldThrow(); |
545 |
jsr166 |
1.13 |
} catch (IllegalStateException success) {} |
546 |
dl |
1.1 |
} |
547 |
|
|
|
548 |
dl |
1.4 |
/** |
549 |
dl |
1.5 |
* toString returns a non-null string |
550 |
dl |
1.4 |
*/ |
551 |
|
|
public void testToString() { |
552 |
dl |
1.1 |
SynchronousQueue q = new SynchronousQueue(); |
553 |
|
|
String s = q.toString(); |
554 |
dl |
1.5 |
assertNotNull(s); |
555 |
jsr166 |
1.10 |
} |
556 |
dl |
1.1 |
|
557 |
|
|
|
558 |
dl |
1.4 |
/** |
559 |
dl |
1.5 |
* offer transfers elements across Executor tasks |
560 |
dl |
1.4 |
*/ |
561 |
dl |
1.1 |
public void testOfferInExecutor() { |
562 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
563 |
|
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
564 |
|
|
|
565 |
jsr166 |
1.13 |
executor.execute(new CheckedRunnable() { |
566 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
567 |
jsr166 |
1.19 |
assertFalse(q.offer(one)); |
568 |
|
|
assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS)); |
569 |
|
|
assertEquals(0, q.remainingCapacity()); |
570 |
jsr166 |
1.13 |
}}); |
571 |
|
|
|
572 |
|
|
executor.execute(new CheckedRunnable() { |
573 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
574 |
dl |
1.33 |
delay(SMALL_DELAY_MS); |
575 |
jsr166 |
1.19 |
assertSame(one, q.take()); |
576 |
jsr166 |
1.13 |
}}); |
577 |
jsr166 |
1.10 |
|
578 |
dl |
1.3 |
joinPool(executor); |
579 |
dl |
1.1 |
} |
580 |
|
|
|
581 |
dl |
1.4 |
/** |
582 |
dl |
1.5 |
* poll retrieves elements across Executor threads |
583 |
dl |
1.4 |
*/ |
584 |
dl |
1.1 |
public void testPollInExecutor() { |
585 |
|
|
final SynchronousQueue q = new SynchronousQueue(); |
586 |
|
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
587 |
jsr166 |
1.13 |
executor.execute(new CheckedRunnable() { |
588 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
589 |
jsr166 |
1.19 |
assertNull(q.poll()); |
590 |
|
|
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
591 |
|
|
assertTrue(q.isEmpty()); |
592 |
jsr166 |
1.13 |
}}); |
593 |
|
|
|
594 |
|
|
executor.execute(new CheckedRunnable() { |
595 |
jsr166 |
1.14 |
public void realRun() throws InterruptedException { |
596 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
597 |
jsr166 |
1.19 |
q.put(one); |
598 |
jsr166 |
1.13 |
}}); |
599 |
jsr166 |
1.10 |
|
600 |
dl |
1.3 |
joinPool(executor); |
601 |
dl |
1.2 |
} |
602 |
|
|
|
603 |
dl |
1.4 |
/** |
604 |
dl |
1.5 |
* a deserialized serialized queue is usable |
605 |
dl |
1.4 |
*/ |
606 |
jsr166 |
1.13 |
public void testSerialization() throws Exception { |
607 |
dl |
1.2 |
SynchronousQueue q = new SynchronousQueue(); |
608 |
jsr166 |
1.13 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
609 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
610 |
|
|
out.writeObject(q); |
611 |
|
|
out.close(); |
612 |
|
|
|
613 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
614 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
615 |
|
|
SynchronousQueue r = (SynchronousQueue)in.readObject(); |
616 |
|
|
assertEquals(q.size(), r.size()); |
617 |
|
|
while (!q.isEmpty()) |
618 |
|
|
assertEquals(q.remove(), r.remove()); |
619 |
dl |
1.1 |
} |
620 |
dl |
1.6 |
|
621 |
|
|
/** |
622 |
|
|
* drainTo(null) throws NPE |
623 |
jsr166 |
1.10 |
*/ |
624 |
dl |
1.6 |
public void testDrainToNull() { |
625 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
626 |
|
|
try { |
627 |
|
|
q.drainTo(null); |
628 |
|
|
shouldThrow(); |
629 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
630 |
dl |
1.6 |
} |
631 |
|
|
|
632 |
|
|
/** |
633 |
|
|
* drainTo(this) throws IAE |
634 |
jsr166 |
1.10 |
*/ |
635 |
dl |
1.6 |
public void testDrainToSelf() { |
636 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
637 |
|
|
try { |
638 |
|
|
q.drainTo(q); |
639 |
|
|
shouldThrow(); |
640 |
jsr166 |
1.13 |
} catch (IllegalArgumentException success) {} |
641 |
dl |
1.6 |
} |
642 |
|
|
|
643 |
|
|
/** |
644 |
|
|
* drainTo(c) of empty queue doesn't transfer elements |
645 |
jsr166 |
1.10 |
*/ |
646 |
dl |
1.6 |
public void testDrainTo() { |
647 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
648 |
|
|
ArrayList l = new ArrayList(); |
649 |
|
|
q.drainTo(l); |
650 |
|
|
assertEquals(q.size(), 0); |
651 |
|
|
assertEquals(l.size(), 0); |
652 |
|
|
} |
653 |
|
|
|
654 |
|
|
/** |
655 |
|
|
* drainTo empties queue, unblocking a waiting put. |
656 |
jsr166 |
1.10 |
*/ |
657 |
jsr166 |
1.13 |
public void testDrainToWithActivePut() throws InterruptedException { |
658 |
dl |
1.6 |
final SynchronousQueue q = new SynchronousQueue(); |
659 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
660 |
|
|
public void realRun() throws InterruptedException { |
661 |
jsr166 |
1.13 |
q.put(new Integer(1)); |
662 |
|
|
}}); |
663 |
|
|
|
664 |
|
|
t.start(); |
665 |
|
|
ArrayList l = new ArrayList(); |
666 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
667 |
jsr166 |
1.13 |
q.drainTo(l); |
668 |
|
|
assertTrue(l.size() <= 1); |
669 |
|
|
if (l.size() > 0) |
670 |
|
|
assertEquals(l.get(0), new Integer(1)); |
671 |
|
|
t.join(); |
672 |
|
|
assertTrue(l.size() <= 1); |
673 |
dl |
1.6 |
} |
674 |
|
|
|
675 |
|
|
/** |
676 |
|
|
* drainTo(null, n) throws NPE |
677 |
jsr166 |
1.10 |
*/ |
678 |
dl |
1.6 |
public void testDrainToNullN() { |
679 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
680 |
|
|
try { |
681 |
|
|
q.drainTo(null, 0); |
682 |
|
|
shouldThrow(); |
683 |
jsr166 |
1.13 |
} catch (NullPointerException success) {} |
684 |
dl |
1.6 |
} |
685 |
|
|
|
686 |
|
|
/** |
687 |
|
|
* drainTo(this, n) throws IAE |
688 |
jsr166 |
1.10 |
*/ |
689 |
dl |
1.6 |
public void testDrainToSelfN() { |
690 |
|
|
SynchronousQueue q = new SynchronousQueue(); |
691 |
|
|
try { |
692 |
|
|
q.drainTo(q, 0); |
693 |
|
|
shouldThrow(); |
694 |
jsr166 |
1.16 |
} catch (IllegalArgumentException success) {} |
695 |
dl |
1.6 |
} |
696 |
|
|
|
697 |
|
|
/** |
698 |
|
|
* drainTo(c, n) empties up to n elements of queue into c |
699 |
jsr166 |
1.10 |
*/ |
700 |
jsr166 |
1.13 |
public void testDrainToN() throws InterruptedException { |
701 |
dl |
1.6 |
final SynchronousQueue q = new SynchronousQueue(); |
702 |
jsr166 |
1.14 |
Thread t1 = new Thread(new CheckedRunnable() { |
703 |
|
|
public void realRun() throws InterruptedException { |
704 |
jsr166 |
1.13 |
q.put(one); |
705 |
|
|
}}); |
706 |
|
|
|
707 |
jsr166 |
1.14 |
Thread t2 = new Thread(new CheckedRunnable() { |
708 |
|
|
public void realRun() throws InterruptedException { |
709 |
jsr166 |
1.13 |
q.put(two); |
710 |
|
|
}}); |
711 |
dl |
1.6 |
|
712 |
jsr166 |
1.13 |
t1.start(); |
713 |
|
|
t2.start(); |
714 |
|
|
ArrayList l = new ArrayList(); |
715 |
dl |
1.33 |
delay(SHORT_DELAY_MS); |
716 |
jsr166 |
1.13 |
q.drainTo(l, 1); |
717 |
jsr166 |
1.23 |
assertEquals(1, l.size()); |
718 |
jsr166 |
1.13 |
q.drainTo(l, 1); |
719 |
jsr166 |
1.23 |
assertEquals(2, l.size()); |
720 |
jsr166 |
1.13 |
assertTrue(l.contains(one)); |
721 |
|
|
assertTrue(l.contains(two)); |
722 |
|
|
t1.join(); |
723 |
|
|
t2.join(); |
724 |
dl |
1.6 |
} |
725 |
|
|
|
726 |
dl |
1.1 |
} |