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 |
1.43 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.12 |
* 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 |
jsr166 |
1.48 |
import java.util.Arrays; |
11 |
|
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import java.util.ArrayList; |
12 |
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import java.util.Collection; |
13 |
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import java.util.Iterator; |
14 |
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import java.util.NoSuchElementException; |
15 |
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import java.util.concurrent.ArrayBlockingQueue; |
16 |
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import java.util.concurrent.BlockingQueue; |
17 |
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import java.util.concurrent.CountDownLatch; |
18 |
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import java.util.concurrent.Executors; |
19 |
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import java.util.concurrent.ExecutorService; |
20 |
jsr166 |
1.16 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
21 |
dl |
1.2 |
import java.io.*; |
22 |
dl |
1.1 |
|
23 |
dl |
1.3 |
public class ArrayBlockingQueueTest extends JSR166TestCase { |
24 |
jsr166 |
1.32 |
|
25 |
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public static class Fair extends BlockingQueueTest { |
26 |
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protected BlockingQueue emptyCollection() { |
27 |
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return new ArrayBlockingQueue(20, true); |
28 |
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} |
29 |
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} |
30 |
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31 |
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public static class NonFair extends BlockingQueueTest { |
32 |
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protected BlockingQueue emptyCollection() { |
33 |
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return new ArrayBlockingQueue(20, false); |
34 |
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} |
35 |
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} |
36 |
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|
37 |
dl |
1.1 |
public static void main(String[] args) { |
38 |
jsr166 |
1.29 |
junit.textui.TestRunner.run(suite()); |
39 |
dl |
1.1 |
} |
40 |
jsr166 |
1.32 |
|
41 |
dl |
1.1 |
public static Test suite() { |
42 |
jsr166 |
1.32 |
return newTestSuite(ArrayBlockingQueueTest.class, |
43 |
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new Fair().testSuite(), |
44 |
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new NonFair().testSuite()); |
45 |
dl |
1.1 |
} |
46 |
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|
47 |
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/** |
48 |
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* Create a queue of given size containing consecutive |
49 |
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* Integers 0 ... n. |
50 |
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*/ |
51 |
jsr166 |
1.41 |
private ArrayBlockingQueue<Integer> populatedQueue(int n) { |
52 |
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ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<Integer>(n); |
53 |
dl |
1.1 |
assertTrue(q.isEmpty()); |
54 |
jsr166 |
1.15 |
for (int i = 0; i < n; i++) |
55 |
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assertTrue(q.offer(new Integer(i))); |
56 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
57 |
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assertEquals(0, q.remainingCapacity()); |
58 |
jsr166 |
1.15 |
assertEquals(n, q.size()); |
59 |
dl |
1.1 |
return q; |
60 |
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} |
61 |
jsr166 |
1.12 |
|
62 |
dl |
1.4 |
/** |
63 |
dl |
1.5 |
* A new queue has the indicated capacity |
64 |
dl |
1.4 |
*/ |
65 |
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public void testConstructor1() { |
66 |
dl |
1.3 |
assertEquals(SIZE, new ArrayBlockingQueue(SIZE).remainingCapacity()); |
67 |
dl |
1.1 |
} |
68 |
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|
69 |
dl |
1.4 |
/** |
70 |
jsr166 |
1.18 |
* Constructor throws IAE if capacity argument nonpositive |
71 |
dl |
1.4 |
*/ |
72 |
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public void testConstructor2() { |
73 |
dl |
1.1 |
try { |
74 |
jsr166 |
1.48 |
new ArrayBlockingQueue(0); |
75 |
dl |
1.4 |
shouldThrow(); |
76 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
77 |
dl |
1.1 |
} |
78 |
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|
79 |
dl |
1.4 |
/** |
80 |
dl |
1.5 |
* Initializing from null Collection throws NPE |
81 |
dl |
1.4 |
*/ |
82 |
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public void testConstructor3() { |
83 |
dl |
1.1 |
try { |
84 |
jsr166 |
1.48 |
new ArrayBlockingQueue(1, true, null); |
85 |
dl |
1.4 |
shouldThrow(); |
86 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
87 |
dl |
1.1 |
} |
88 |
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|
89 |
dl |
1.4 |
/** |
90 |
dl |
1.5 |
* Initializing from Collection of null elements throws NPE |
91 |
dl |
1.4 |
*/ |
92 |
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public void testConstructor4() { |
93 |
jsr166 |
1.48 |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
94 |
dl |
1.1 |
try { |
95 |
jsr166 |
1.48 |
new ArrayBlockingQueue(SIZE, false, elements); |
96 |
dl |
1.4 |
shouldThrow(); |
97 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
98 |
dl |
1.1 |
} |
99 |
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|
100 |
dl |
1.4 |
/** |
101 |
dl |
1.5 |
* Initializing from Collection with some null elements throws NPE |
102 |
dl |
1.4 |
*/ |
103 |
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public void testConstructor5() { |
104 |
jsr166 |
1.48 |
Integer[] ints = new Integer[SIZE]; |
105 |
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for (int i = 0; i < SIZE-1; ++i) |
106 |
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ints[i] = i; |
107 |
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Collection<Integer> elements = Arrays.asList(ints); |
108 |
dl |
1.1 |
try { |
109 |
jsr166 |
1.48 |
new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
110 |
dl |
1.4 |
shouldThrow(); |
111 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
112 |
dl |
1.1 |
} |
113 |
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|
114 |
dl |
1.4 |
/** |
115 |
dl |
1.5 |
* Initializing from too large collection throws IAE |
116 |
dl |
1.4 |
*/ |
117 |
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public void testConstructor6() { |
118 |
jsr166 |
1.48 |
Integer[] ints = new Integer[SIZE]; |
119 |
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for (int i = 0; i < SIZE; ++i) |
120 |
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ints[i] = i; |
121 |
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Collection<Integer> elements = Arrays.asList(ints); |
122 |
dl |
1.1 |
try { |
123 |
jsr166 |
1.48 |
new ArrayBlockingQueue(SIZE - 1, false, elements); |
124 |
dl |
1.4 |
shouldThrow(); |
125 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
126 |
dl |
1.1 |
} |
127 |
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|
128 |
dl |
1.4 |
/** |
129 |
dl |
1.5 |
* Queue contains all elements of collection used to initialize |
130 |
dl |
1.4 |
*/ |
131 |
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public void testConstructor7() { |
132 |
jsr166 |
1.19 |
Integer[] ints = new Integer[SIZE]; |
133 |
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for (int i = 0; i < SIZE; ++i) |
134 |
jsr166 |
1.48 |
ints[i] = i; |
135 |
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Collection<Integer> elements = Arrays.asList(ints); |
136 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements); |
137 |
jsr166 |
1.19 |
for (int i = 0; i < SIZE; ++i) |
138 |
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assertEquals(ints[i], q.poll()); |
139 |
dl |
1.1 |
} |
140 |
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|
141 |
dl |
1.4 |
/** |
142 |
dl |
1.5 |
* Queue transitions from empty to full when elements added |
143 |
dl |
1.4 |
*/ |
144 |
dl |
1.1 |
public void testEmptyFull() { |
145 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
146 |
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assertTrue(q.isEmpty()); |
147 |
dl |
1.4 |
assertEquals(2, q.remainingCapacity()); |
148 |
dl |
1.3 |
q.add(one); |
149 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
150 |
dl |
1.3 |
q.add(two); |
151 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
152 |
dl |
1.4 |
assertEquals(0, q.remainingCapacity()); |
153 |
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assertFalse(q.offer(three)); |
154 |
dl |
1.1 |
} |
155 |
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|
156 |
dl |
1.4 |
/** |
157 |
dl |
1.5 |
* remainingCapacity decreases on add, increases on remove |
158 |
dl |
1.4 |
*/ |
159 |
|
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public void testRemainingCapacity() { |
160 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
161 |
|
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for (int i = 0; i < SIZE; ++i) { |
162 |
dl |
1.1 |
assertEquals(i, q.remainingCapacity()); |
163 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
164 |
dl |
1.1 |
q.remove(); |
165 |
|
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} |
166 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
167 |
|
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assertEquals(SIZE-i, q.remainingCapacity()); |
168 |
dl |
1.1 |
assertEquals(i, q.size()); |
169 |
|
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q.add(new Integer(i)); |
170 |
|
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} |
171 |
|
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} |
172 |
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|
173 |
dl |
1.4 |
/** |
174 |
dl |
1.5 |
* Offer succeeds if not full; fails if full |
175 |
dl |
1.4 |
*/ |
176 |
|
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public void testOffer() { |
177 |
dl |
1.1 |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
178 |
dl |
1.3 |
assertTrue(q.offer(zero)); |
179 |
|
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assertFalse(q.offer(one)); |
180 |
dl |
1.1 |
} |
181 |
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|
182 |
dl |
1.4 |
/** |
183 |
dl |
1.5 |
* add succeeds if not full; throws ISE if full |
184 |
dl |
1.4 |
*/ |
185 |
|
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public void testAdd() { |
186 |
jsr166 |
1.15 |
try { |
187 |
dl |
1.3 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
188 |
|
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for (int i = 0; i < SIZE; ++i) { |
189 |
dl |
1.1 |
assertTrue(q.add(new Integer(i))); |
190 |
|
|
} |
191 |
|
|
assertEquals(0, q.remainingCapacity()); |
192 |
dl |
1.3 |
q.add(new Integer(SIZE)); |
193 |
jsr166 |
1.17 |
shouldThrow(); |
194 |
|
|
} catch (IllegalStateException success) {} |
195 |
dl |
1.1 |
} |
196 |
|
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|
197 |
dl |
1.4 |
/** |
198 |
dl |
1.6 |
* addAll(this) throws IAE |
199 |
|
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*/ |
200 |
|
|
public void testAddAllSelf() { |
201 |
|
|
try { |
202 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
203 |
|
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q.addAll(q); |
204 |
|
|
shouldThrow(); |
205 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
206 |
dl |
1.6 |
} |
207 |
|
|
|
208 |
dl |
1.4 |
/** |
209 |
dl |
1.5 |
* addAll of a collection with any null elements throws NPE after |
210 |
|
|
* possibly adding some elements |
211 |
dl |
1.4 |
*/ |
212 |
|
|
public void testAddAll3() { |
213 |
dl |
1.1 |
try { |
214 |
dl |
1.3 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
215 |
|
|
Integer[] ints = new Integer[SIZE]; |
216 |
|
|
for (int i = 0; i < SIZE-1; ++i) |
217 |
dl |
1.1 |
ints[i] = new Integer(i); |
218 |
|
|
q.addAll(Arrays.asList(ints)); |
219 |
dl |
1.4 |
shouldThrow(); |
220 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
221 |
dl |
1.1 |
} |
222 |
jsr166 |
1.30 |
|
223 |
dl |
1.4 |
/** |
224 |
dl |
1.5 |
* addAll throws ISE if not enough room |
225 |
dl |
1.4 |
*/ |
226 |
|
|
public void testAddAll4() { |
227 |
dl |
1.1 |
try { |
228 |
|
|
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
229 |
dl |
1.3 |
Integer[] ints = new Integer[SIZE]; |
230 |
|
|
for (int i = 0; i < SIZE; ++i) |
231 |
dl |
1.1 |
ints[i] = new Integer(i); |
232 |
|
|
q.addAll(Arrays.asList(ints)); |
233 |
dl |
1.4 |
shouldThrow(); |
234 |
jsr166 |
1.17 |
} catch (IllegalStateException success) {} |
235 |
dl |
1.1 |
} |
236 |
jsr166 |
1.30 |
|
237 |
dl |
1.4 |
/** |
238 |
dl |
1.5 |
* Queue contains all elements, in traversal order, of successful addAll |
239 |
dl |
1.4 |
*/ |
240 |
|
|
public void testAddAll5() { |
241 |
jsr166 |
1.17 |
Integer[] empty = new Integer[0]; |
242 |
|
|
Integer[] ints = new Integer[SIZE]; |
243 |
|
|
for (int i = 0; i < SIZE; ++i) |
244 |
|
|
ints[i] = new Integer(i); |
245 |
|
|
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
246 |
|
|
assertFalse(q.addAll(Arrays.asList(empty))); |
247 |
|
|
assertTrue(q.addAll(Arrays.asList(ints))); |
248 |
|
|
for (int i = 0; i < SIZE; ++i) |
249 |
|
|
assertEquals(ints[i], q.poll()); |
250 |
dl |
1.1 |
} |
251 |
|
|
|
252 |
dl |
1.4 |
/** |
253 |
dl |
1.5 |
* all elements successfully put are contained |
254 |
dl |
1.4 |
*/ |
255 |
jsr166 |
1.17 |
public void testPut() throws InterruptedException { |
256 |
|
|
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
257 |
|
|
for (int i = 0; i < SIZE; ++i) { |
258 |
|
|
Integer I = new Integer(i); |
259 |
|
|
q.put(I); |
260 |
|
|
assertTrue(q.contains(I)); |
261 |
dl |
1.1 |
} |
262 |
jsr166 |
1.17 |
assertEquals(0, q.remainingCapacity()); |
263 |
dl |
1.1 |
} |
264 |
|
|
|
265 |
dl |
1.4 |
/** |
266 |
dl |
1.5 |
* put blocks interruptibly if full |
267 |
dl |
1.4 |
*/ |
268 |
jsr166 |
1.17 |
public void testBlockingPut() throws InterruptedException { |
269 |
dl |
1.10 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
270 |
jsr166 |
1.47 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
271 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
272 |
jsr166 |
1.25 |
public void realRun() throws InterruptedException { |
273 |
|
|
for (int i = 0; i < SIZE; ++i) |
274 |
|
|
q.put(i); |
275 |
|
|
assertEquals(SIZE, q.size()); |
276 |
|
|
assertEquals(0, q.remainingCapacity()); |
277 |
jsr166 |
1.47 |
|
278 |
|
|
Thread.currentThread().interrupt(); |
279 |
|
|
try { |
280 |
|
|
q.put(99); |
281 |
|
|
shouldThrow(); |
282 |
|
|
} catch (InterruptedException success) {} |
283 |
|
|
assertFalse(Thread.interrupted()); |
284 |
|
|
|
285 |
|
|
pleaseInterrupt.countDown(); |
286 |
jsr166 |
1.17 |
try { |
287 |
jsr166 |
1.25 |
q.put(99); |
288 |
|
|
shouldThrow(); |
289 |
|
|
} catch (InterruptedException success) {} |
290 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
291 |
jsr166 |
1.25 |
}}); |
292 |
jsr166 |
1.17 |
|
293 |
jsr166 |
1.47 |
await(pleaseInterrupt); |
294 |
|
|
assertThreadStaysAlive(t); |
295 |
jsr166 |
1.17 |
t.interrupt(); |
296 |
jsr166 |
1.47 |
awaitTermination(t); |
297 |
jsr166 |
1.25 |
assertEquals(SIZE, q.size()); |
298 |
|
|
assertEquals(0, q.remainingCapacity()); |
299 |
dl |
1.1 |
} |
300 |
|
|
|
301 |
dl |
1.4 |
/** |
302 |
jsr166 |
1.47 |
* put blocks interruptibly waiting for take when full |
303 |
dl |
1.4 |
*/ |
304 |
jsr166 |
1.17 |
public void testPutWithTake() throws InterruptedException { |
305 |
jsr166 |
1.27 |
final int capacity = 2; |
306 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity); |
307 |
jsr166 |
1.47 |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
308 |
|
|
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
309 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
310 |
jsr166 |
1.27 |
public void realRun() throws InterruptedException { |
311 |
jsr166 |
1.47 |
for (int i = 0; i < capacity; i++) |
312 |
jsr166 |
1.27 |
q.put(i); |
313 |
jsr166 |
1.47 |
pleaseTake.countDown(); |
314 |
|
|
q.put(86); |
315 |
|
|
|
316 |
|
|
pleaseInterrupt.countDown(); |
317 |
jsr166 |
1.17 |
try { |
318 |
jsr166 |
1.27 |
q.put(99); |
319 |
|
|
shouldThrow(); |
320 |
|
|
} catch (InterruptedException success) {} |
321 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
322 |
jsr166 |
1.17 |
}}); |
323 |
|
|
|
324 |
jsr166 |
1.47 |
await(pleaseTake); |
325 |
jsr166 |
1.27 |
assertEquals(q.remainingCapacity(), 0); |
326 |
|
|
assertEquals(0, q.take()); |
327 |
jsr166 |
1.47 |
|
328 |
|
|
await(pleaseInterrupt); |
329 |
|
|
assertThreadStaysAlive(t); |
330 |
jsr166 |
1.17 |
t.interrupt(); |
331 |
jsr166 |
1.47 |
awaitTermination(t); |
332 |
jsr166 |
1.27 |
assertEquals(q.remainingCapacity(), 0); |
333 |
dl |
1.1 |
} |
334 |
|
|
|
335 |
dl |
1.4 |
/** |
336 |
dl |
1.5 |
* timed offer times out if full and elements not taken |
337 |
dl |
1.4 |
*/ |
338 |
jsr166 |
1.17 |
public void testTimedOffer() throws InterruptedException { |
339 |
dl |
1.1 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
340 |
jsr166 |
1.46 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
341 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
342 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
343 |
|
|
q.put(new Object()); |
344 |
|
|
q.put(new Object()); |
345 |
jsr166 |
1.46 |
long startTime = System.nanoTime(); |
346 |
|
|
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
347 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
348 |
|
|
pleaseInterrupt.countDown(); |
349 |
jsr166 |
1.24 |
try { |
350 |
jsr166 |
1.46 |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
351 |
jsr166 |
1.24 |
shouldThrow(); |
352 |
|
|
} catch (InterruptedException success) {} |
353 |
|
|
}}); |
354 |
jsr166 |
1.17 |
|
355 |
jsr166 |
1.46 |
await(pleaseInterrupt); |
356 |
jsr166 |
1.47 |
assertThreadStaysAlive(t); |
357 |
jsr166 |
1.17 |
t.interrupt(); |
358 |
jsr166 |
1.46 |
awaitTermination(t); |
359 |
dl |
1.1 |
} |
360 |
|
|
|
361 |
dl |
1.4 |
/** |
362 |
dl |
1.5 |
* take retrieves elements in FIFO order |
363 |
dl |
1.4 |
*/ |
364 |
jsr166 |
1.17 |
public void testTake() throws InterruptedException { |
365 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
366 |
|
|
for (int i = 0; i < SIZE; ++i) { |
367 |
jsr166 |
1.25 |
assertEquals(i, q.take()); |
368 |
jsr166 |
1.15 |
} |
369 |
dl |
1.1 |
} |
370 |
|
|
|
371 |
dl |
1.4 |
/** |
372 |
dl |
1.5 |
* Take removes existing elements until empty, then blocks interruptibly |
373 |
dl |
1.4 |
*/ |
374 |
jsr166 |
1.17 |
public void testBlockingTake() throws InterruptedException { |
375 |
jsr166 |
1.25 |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
376 |
jsr166 |
1.47 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
377 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
378 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
379 |
|
|
for (int i = 0; i < SIZE; ++i) { |
380 |
jsr166 |
1.25 |
assertEquals(i, q.take()); |
381 |
jsr166 |
1.17 |
} |
382 |
jsr166 |
1.47 |
|
383 |
|
|
Thread.currentThread().interrupt(); |
384 |
|
|
try { |
385 |
|
|
q.take(); |
386 |
|
|
shouldThrow(); |
387 |
|
|
} catch (InterruptedException success) {} |
388 |
|
|
assertFalse(Thread.interrupted()); |
389 |
|
|
|
390 |
|
|
pleaseInterrupt.countDown(); |
391 |
jsr166 |
1.25 |
try { |
392 |
|
|
q.take(); |
393 |
|
|
shouldThrow(); |
394 |
|
|
} catch (InterruptedException success) {} |
395 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
396 |
jsr166 |
1.25 |
}}); |
397 |
jsr166 |
1.17 |
|
398 |
jsr166 |
1.47 |
await(pleaseInterrupt); |
399 |
|
|
assertThreadStaysAlive(t); |
400 |
jsr166 |
1.25 |
t.interrupt(); |
401 |
jsr166 |
1.47 |
awaitTermination(t); |
402 |
dl |
1.1 |
} |
403 |
|
|
|
404 |
dl |
1.4 |
/** |
405 |
dl |
1.5 |
* poll succeeds unless empty |
406 |
dl |
1.4 |
*/ |
407 |
|
|
public void testPoll() { |
408 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
409 |
|
|
for (int i = 0; i < SIZE; ++i) { |
410 |
jsr166 |
1.25 |
assertEquals(i, q.poll()); |
411 |
dl |
1.1 |
} |
412 |
jsr166 |
1.15 |
assertNull(q.poll()); |
413 |
dl |
1.1 |
} |
414 |
|
|
|
415 |
dl |
1.4 |
/** |
416 |
jsr166 |
1.37 |
* timed poll with zero timeout succeeds when non-empty, else times out |
417 |
dl |
1.4 |
*/ |
418 |
jsr166 |
1.17 |
public void testTimedPoll0() throws InterruptedException { |
419 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
420 |
|
|
for (int i = 0; i < SIZE; ++i) { |
421 |
jsr166 |
1.25 |
assertEquals(i, q.poll(0, MILLISECONDS)); |
422 |
jsr166 |
1.15 |
} |
423 |
jsr166 |
1.17 |
assertNull(q.poll(0, MILLISECONDS)); |
424 |
jsr166 |
1.47 |
checkEmpty(q); |
425 |
dl |
1.1 |
} |
426 |
|
|
|
427 |
dl |
1.4 |
/** |
428 |
jsr166 |
1.37 |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
429 |
dl |
1.4 |
*/ |
430 |
jsr166 |
1.17 |
public void testTimedPoll() throws InterruptedException { |
431 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
432 |
|
|
for (int i = 0; i < SIZE; ++i) { |
433 |
jsr166 |
1.47 |
long startTime = System.nanoTime(); |
434 |
|
|
assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
435 |
|
|
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
436 |
|
|
} |
437 |
|
|
long startTime = System.nanoTime(); |
438 |
|
|
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
439 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
440 |
|
|
checkEmpty(q); |
441 |
dl |
1.1 |
} |
442 |
|
|
|
443 |
dl |
1.4 |
/** |
444 |
dl |
1.5 |
* Interrupted timed poll throws InterruptedException instead of |
445 |
|
|
* returning timeout status |
446 |
dl |
1.4 |
*/ |
447 |
jsr166 |
1.17 |
public void testInterruptedTimedPoll() throws InterruptedException { |
448 |
jsr166 |
1.42 |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
449 |
|
|
final CountDownLatch aboutToWait = new CountDownLatch(1); |
450 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
451 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
452 |
|
|
for (int i = 0; i < SIZE; ++i) { |
453 |
jsr166 |
1.42 |
long t0 = System.nanoTime(); |
454 |
|
|
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
455 |
|
|
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
456 |
jsr166 |
1.17 |
} |
457 |
jsr166 |
1.42 |
long t0 = System.nanoTime(); |
458 |
|
|
aboutToWait.countDown(); |
459 |
jsr166 |
1.21 |
try { |
460 |
jsr166 |
1.42 |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
461 |
jsr166 |
1.22 |
shouldThrow(); |
462 |
jsr166 |
1.42 |
} catch (InterruptedException success) { |
463 |
|
|
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
464 |
|
|
} |
465 |
jsr166 |
1.21 |
}}); |
466 |
jsr166 |
1.17 |
|
467 |
jsr166 |
1.42 |
aboutToWait.await(); |
468 |
|
|
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
469 |
jsr166 |
1.17 |
t.interrupt(); |
470 |
jsr166 |
1.42 |
awaitTermination(t, MEDIUM_DELAY_MS); |
471 |
|
|
checkEmpty(q); |
472 |
dl |
1.1 |
} |
473 |
|
|
|
474 |
dl |
1.4 |
/** |
475 |
dl |
1.5 |
* peek returns next element, or null if empty |
476 |
dl |
1.4 |
*/ |
477 |
|
|
public void testPeek() { |
478 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
479 |
|
|
for (int i = 0; i < SIZE; ++i) { |
480 |
jsr166 |
1.26 |
assertEquals(i, q.peek()); |
481 |
|
|
assertEquals(i, q.poll()); |
482 |
dl |
1.1 |
assertTrue(q.peek() == null || |
483 |
jsr166 |
1.26 |
!q.peek().equals(i)); |
484 |
dl |
1.1 |
} |
485 |
jsr166 |
1.15 |
assertNull(q.peek()); |
486 |
dl |
1.1 |
} |
487 |
|
|
|
488 |
dl |
1.4 |
/** |
489 |
dl |
1.5 |
* element returns next element, or throws NSEE if empty |
490 |
dl |
1.4 |
*/ |
491 |
|
|
public void testElement() { |
492 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
493 |
|
|
for (int i = 0; i < SIZE; ++i) { |
494 |
jsr166 |
1.26 |
assertEquals(i, q.element()); |
495 |
|
|
assertEquals(i, q.poll()); |
496 |
dl |
1.1 |
} |
497 |
|
|
try { |
498 |
|
|
q.element(); |
499 |
dl |
1.4 |
shouldThrow(); |
500 |
jsr166 |
1.17 |
} catch (NoSuchElementException success) {} |
501 |
dl |
1.1 |
} |
502 |
|
|
|
503 |
dl |
1.4 |
/** |
504 |
dl |
1.5 |
* remove removes next element, or throws NSEE if empty |
505 |
dl |
1.4 |
*/ |
506 |
|
|
public void testRemove() { |
507 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
508 |
|
|
for (int i = 0; i < SIZE; ++i) { |
509 |
jsr166 |
1.26 |
assertEquals(i, q.remove()); |
510 |
dl |
1.1 |
} |
511 |
|
|
try { |
512 |
|
|
q.remove(); |
513 |
dl |
1.4 |
shouldThrow(); |
514 |
jsr166 |
1.17 |
} catch (NoSuchElementException success) {} |
515 |
dl |
1.1 |
} |
516 |
|
|
|
517 |
dl |
1.4 |
/** |
518 |
dl |
1.5 |
* remove(x) removes x and returns true if present |
519 |
dl |
1.4 |
*/ |
520 |
|
|
public void testRemoveElement() { |
521 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
522 |
|
|
for (int i = 1; i < SIZE; i+=2) { |
523 |
dl |
1.1 |
assertTrue(q.remove(new Integer(i))); |
524 |
|
|
} |
525 |
dl |
1.3 |
for (int i = 0; i < SIZE; i+=2) { |
526 |
dl |
1.1 |
assertTrue(q.remove(new Integer(i))); |
527 |
|
|
assertFalse(q.remove(new Integer(i+1))); |
528 |
|
|
} |
529 |
dl |
1.2 |
assertTrue(q.isEmpty()); |
530 |
dl |
1.1 |
} |
531 |
jsr166 |
1.12 |
|
532 |
dl |
1.4 |
/** |
533 |
dl |
1.5 |
* contains(x) reports true when elements added but not yet removed |
534 |
dl |
1.4 |
*/ |
535 |
|
|
public void testContains() { |
536 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
537 |
|
|
for (int i = 0; i < SIZE; ++i) { |
538 |
dl |
1.1 |
assertTrue(q.contains(new Integer(i))); |
539 |
jsr166 |
1.26 |
assertEquals(i, q.poll()); |
540 |
dl |
1.1 |
assertFalse(q.contains(new Integer(i))); |
541 |
|
|
} |
542 |
|
|
} |
543 |
|
|
|
544 |
dl |
1.4 |
/** |
545 |
dl |
1.5 |
* clear removes all elements |
546 |
dl |
1.4 |
*/ |
547 |
|
|
public void testClear() { |
548 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
549 |
dl |
1.1 |
q.clear(); |
550 |
|
|
assertTrue(q.isEmpty()); |
551 |
|
|
assertEquals(0, q.size()); |
552 |
dl |
1.3 |
assertEquals(SIZE, q.remainingCapacity()); |
553 |
|
|
q.add(one); |
554 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
555 |
dl |
1.11 |
assertTrue(q.contains(one)); |
556 |
dl |
1.1 |
q.clear(); |
557 |
|
|
assertTrue(q.isEmpty()); |
558 |
|
|
} |
559 |
|
|
|
560 |
dl |
1.4 |
/** |
561 |
dl |
1.5 |
* containsAll(c) is true when c contains a subset of elements |
562 |
dl |
1.4 |
*/ |
563 |
|
|
public void testContainsAll() { |
564 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
565 |
|
|
ArrayBlockingQueue p = new ArrayBlockingQueue(SIZE); |
566 |
|
|
for (int i = 0; i < SIZE; ++i) { |
567 |
dl |
1.1 |
assertTrue(q.containsAll(p)); |
568 |
|
|
assertFalse(p.containsAll(q)); |
569 |
|
|
p.add(new Integer(i)); |
570 |
|
|
} |
571 |
|
|
assertTrue(p.containsAll(q)); |
572 |
|
|
} |
573 |
|
|
|
574 |
dl |
1.4 |
/** |
575 |
dl |
1.5 |
* retainAll(c) retains only those elements of c and reports true if changed |
576 |
dl |
1.4 |
*/ |
577 |
|
|
public void testRetainAll() { |
578 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
579 |
|
|
ArrayBlockingQueue p = populatedQueue(SIZE); |
580 |
|
|
for (int i = 0; i < SIZE; ++i) { |
581 |
dl |
1.1 |
boolean changed = q.retainAll(p); |
582 |
|
|
if (i == 0) |
583 |
|
|
assertFalse(changed); |
584 |
|
|
else |
585 |
|
|
assertTrue(changed); |
586 |
|
|
|
587 |
|
|
assertTrue(q.containsAll(p)); |
588 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
589 |
dl |
1.1 |
p.remove(); |
590 |
|
|
} |
591 |
|
|
} |
592 |
|
|
|
593 |
dl |
1.4 |
/** |
594 |
dl |
1.5 |
* removeAll(c) removes only those elements of c and reports true if changed |
595 |
dl |
1.4 |
*/ |
596 |
|
|
public void testRemoveAll() { |
597 |
dl |
1.3 |
for (int i = 1; i < SIZE; ++i) { |
598 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
599 |
|
|
ArrayBlockingQueue p = populatedQueue(i); |
600 |
dl |
1.1 |
assertTrue(q.removeAll(p)); |
601 |
dl |
1.3 |
assertEquals(SIZE-i, q.size()); |
602 |
dl |
1.1 |
for (int j = 0; j < i; ++j) { |
603 |
|
|
Integer I = (Integer)(p.remove()); |
604 |
|
|
assertFalse(q.contains(I)); |
605 |
|
|
} |
606 |
|
|
} |
607 |
|
|
} |
608 |
|
|
|
609 |
dl |
1.4 |
/** |
610 |
jsr166 |
1.40 |
* toArray contains all elements in FIFO order |
611 |
dl |
1.4 |
*/ |
612 |
jsr166 |
1.40 |
public void testToArray() { |
613 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
614 |
jsr166 |
1.15 |
Object[] o = q.toArray(); |
615 |
|
|
for (int i = 0; i < o.length; i++) |
616 |
jsr166 |
1.40 |
assertSame(o[i], q.poll()); |
617 |
dl |
1.1 |
} |
618 |
|
|
|
619 |
dl |
1.4 |
/** |
620 |
jsr166 |
1.40 |
* toArray(a) contains all elements in FIFO order |
621 |
dl |
1.4 |
*/ |
622 |
jsr166 |
1.40 |
public void testToArray2() { |
623 |
jsr166 |
1.41 |
ArrayBlockingQueue<Integer> q = populatedQueue(SIZE); |
624 |
jsr166 |
1.15 |
Integer[] ints = new Integer[SIZE]; |
625 |
jsr166 |
1.41 |
Integer[] array = q.toArray(ints); |
626 |
|
|
assertSame(ints, array); |
627 |
jsr166 |
1.17 |
for (int i = 0; i < ints.length; i++) |
628 |
jsr166 |
1.40 |
assertSame(ints[i], q.poll()); |
629 |
dl |
1.1 |
} |
630 |
dl |
1.6 |
|
631 |
|
|
/** |
632 |
jsr166 |
1.38 |
* toArray(incompatible array type) throws ArrayStoreException |
633 |
dl |
1.6 |
*/ |
634 |
|
|
public void testToArray1_BadArg() { |
635 |
jsr166 |
1.26 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
636 |
jsr166 |
1.15 |
try { |
637 |
jsr166 |
1.38 |
q.toArray(new String[10]); |
638 |
jsr166 |
1.15 |
shouldThrow(); |
639 |
jsr166 |
1.18 |
} catch (ArrayStoreException success) {} |
640 |
dl |
1.6 |
} |
641 |
|
|
|
642 |
dl |
1.4 |
/** |
643 |
dl |
1.5 |
* iterator iterates through all elements |
644 |
dl |
1.4 |
*/ |
645 |
jsr166 |
1.17 |
public void testIterator() throws InterruptedException { |
646 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
647 |
jsr166 |
1.15 |
Iterator it = q.iterator(); |
648 |
jsr166 |
1.17 |
while (it.hasNext()) { |
649 |
|
|
assertEquals(it.next(), q.take()); |
650 |
jsr166 |
1.15 |
} |
651 |
dl |
1.1 |
} |
652 |
|
|
|
653 |
dl |
1.4 |
/** |
654 |
dl |
1.5 |
* iterator.remove removes current element |
655 |
|
|
*/ |
656 |
jsr166 |
1.29 |
public void testIteratorRemove() { |
657 |
dl |
1.5 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
658 |
|
|
q.add(two); |
659 |
|
|
q.add(one); |
660 |
|
|
q.add(three); |
661 |
|
|
|
662 |
|
|
Iterator it = q.iterator(); |
663 |
|
|
it.next(); |
664 |
|
|
it.remove(); |
665 |
jsr166 |
1.12 |
|
666 |
dl |
1.5 |
it = q.iterator(); |
667 |
jsr166 |
1.28 |
assertSame(it.next(), one); |
668 |
|
|
assertSame(it.next(), three); |
669 |
dl |
1.5 |
assertFalse(it.hasNext()); |
670 |
|
|
} |
671 |
|
|
|
672 |
|
|
/** |
673 |
|
|
* iterator ordering is FIFO |
674 |
dl |
1.4 |
*/ |
675 |
dl |
1.1 |
public void testIteratorOrdering() { |
676 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
677 |
dl |
1.3 |
q.add(one); |
678 |
|
|
q.add(two); |
679 |
|
|
q.add(three); |
680 |
dl |
1.1 |
|
681 |
|
|
assertEquals("queue should be full", 0, q.remainingCapacity()); |
682 |
|
|
|
683 |
|
|
int k = 0; |
684 |
|
|
for (Iterator it = q.iterator(); it.hasNext();) { |
685 |
jsr166 |
1.26 |
assertEquals(++k, it.next()); |
686 |
dl |
1.1 |
} |
687 |
dl |
1.4 |
assertEquals(3, k); |
688 |
dl |
1.1 |
} |
689 |
|
|
|
690 |
dl |
1.4 |
/** |
691 |
dl |
1.5 |
* Modifications do not cause iterators to fail |
692 |
dl |
1.4 |
*/ |
693 |
jsr166 |
1.29 |
public void testWeaklyConsistentIteration() { |
694 |
dl |
1.1 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
695 |
dl |
1.3 |
q.add(one); |
696 |
|
|
q.add(two); |
697 |
|
|
q.add(three); |
698 |
jsr166 |
1.17 |
for (Iterator it = q.iterator(); it.hasNext();) { |
699 |
|
|
q.remove(); |
700 |
|
|
it.next(); |
701 |
dl |
1.1 |
} |
702 |
dl |
1.4 |
assertEquals(0, q.size()); |
703 |
dl |
1.1 |
} |
704 |
|
|
|
705 |
dl |
1.4 |
/** |
706 |
dl |
1.5 |
* toString contains toStrings of elements |
707 |
dl |
1.4 |
*/ |
708 |
|
|
public void testToString() { |
709 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
710 |
dl |
1.1 |
String s = q.toString(); |
711 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
712 |
jsr166 |
1.47 |
assertTrue(s.contains(String.valueOf(i))); |
713 |
dl |
1.1 |
} |
714 |
jsr166 |
1.12 |
} |
715 |
dl |
1.1 |
|
716 |
dl |
1.4 |
/** |
717 |
dl |
1.5 |
* offer transfers elements across Executor tasks |
718 |
dl |
1.4 |
*/ |
719 |
dl |
1.1 |
public void testOfferInExecutor() { |
720 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
721 |
dl |
1.3 |
q.add(one); |
722 |
|
|
q.add(two); |
723 |
dl |
1.1 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
724 |
jsr166 |
1.47 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
725 |
jsr166 |
1.17 |
executor.execute(new CheckedRunnable() { |
726 |
|
|
public void realRun() throws InterruptedException { |
727 |
jsr166 |
1.27 |
assertFalse(q.offer(three)); |
728 |
jsr166 |
1.47 |
threadsStarted.await(); |
729 |
|
|
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
730 |
jsr166 |
1.27 |
assertEquals(0, q.remainingCapacity()); |
731 |
jsr166 |
1.17 |
}}); |
732 |
|
|
|
733 |
|
|
executor.execute(new CheckedRunnable() { |
734 |
|
|
public void realRun() throws InterruptedException { |
735 |
jsr166 |
1.47 |
threadsStarted.await(); |
736 |
|
|
assertEquals(0, q.remainingCapacity()); |
737 |
jsr166 |
1.27 |
assertSame(one, q.take()); |
738 |
jsr166 |
1.17 |
}}); |
739 |
jsr166 |
1.12 |
|
740 |
dl |
1.3 |
joinPool(executor); |
741 |
dl |
1.1 |
} |
742 |
|
|
|
743 |
dl |
1.4 |
/** |
744 |
jsr166 |
1.47 |
* timed poll retrieves elements across Executor threads |
745 |
dl |
1.4 |
*/ |
746 |
dl |
1.1 |
public void testPollInExecutor() { |
747 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
748 |
jsr166 |
1.47 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
749 |
dl |
1.1 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
750 |
jsr166 |
1.17 |
executor.execute(new CheckedRunnable() { |
751 |
|
|
public void realRun() throws InterruptedException { |
752 |
jsr166 |
1.27 |
assertNull(q.poll()); |
753 |
jsr166 |
1.47 |
threadsStarted.await(); |
754 |
|
|
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
755 |
|
|
checkEmpty(q); |
756 |
jsr166 |
1.17 |
}}); |
757 |
|
|
|
758 |
|
|
executor.execute(new CheckedRunnable() { |
759 |
|
|
public void realRun() throws InterruptedException { |
760 |
jsr166 |
1.47 |
threadsStarted.await(); |
761 |
jsr166 |
1.17 |
q.put(one); |
762 |
|
|
}}); |
763 |
jsr166 |
1.12 |
|
764 |
dl |
1.3 |
joinPool(executor); |
765 |
dl |
1.1 |
} |
766 |
dl |
1.2 |
|
767 |
dl |
1.4 |
/** |
768 |
dl |
1.5 |
* A deserialized serialized queue has same elements in same order |
769 |
dl |
1.4 |
*/ |
770 |
jsr166 |
1.17 |
public void testSerialization() throws Exception { |
771 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
772 |
dl |
1.2 |
|
773 |
jsr166 |
1.17 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
774 |
|
|
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
775 |
|
|
out.writeObject(q); |
776 |
|
|
out.close(); |
777 |
|
|
|
778 |
|
|
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
779 |
|
|
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
780 |
|
|
ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject(); |
781 |
|
|
assertEquals(q.size(), r.size()); |
782 |
|
|
while (!q.isEmpty()) |
783 |
|
|
assertEquals(q.remove(), r.remove()); |
784 |
dl |
1.6 |
} |
785 |
|
|
|
786 |
|
|
/** |
787 |
|
|
* drainTo(c) empties queue into another collection c |
788 |
jsr166 |
1.12 |
*/ |
789 |
dl |
1.6 |
public void testDrainTo() { |
790 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
791 |
|
|
ArrayList l = new ArrayList(); |
792 |
|
|
q.drainTo(l); |
793 |
|
|
assertEquals(q.size(), 0); |
794 |
|
|
assertEquals(l.size(), SIZE); |
795 |
jsr166 |
1.12 |
for (int i = 0; i < SIZE; ++i) |
796 |
dl |
1.6 |
assertEquals(l.get(i), new Integer(i)); |
797 |
dl |
1.11 |
q.add(zero); |
798 |
|
|
q.add(one); |
799 |
|
|
assertFalse(q.isEmpty()); |
800 |
|
|
assertTrue(q.contains(zero)); |
801 |
|
|
assertTrue(q.contains(one)); |
802 |
|
|
l.clear(); |
803 |
|
|
q.drainTo(l); |
804 |
|
|
assertEquals(q.size(), 0); |
805 |
|
|
assertEquals(l.size(), 2); |
806 |
jsr166 |
1.12 |
for (int i = 0; i < 2; ++i) |
807 |
dl |
1.11 |
assertEquals(l.get(i), new Integer(i)); |
808 |
dl |
1.6 |
} |
809 |
|
|
|
810 |
|
|
/** |
811 |
|
|
* drainTo empties full queue, unblocking a waiting put. |
812 |
jsr166 |
1.12 |
*/ |
813 |
jsr166 |
1.17 |
public void testDrainToWithActivePut() throws InterruptedException { |
814 |
dl |
1.6 |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
815 |
jsr166 |
1.17 |
Thread t = new Thread(new CheckedRunnable() { |
816 |
|
|
public void realRun() throws InterruptedException { |
817 |
|
|
q.put(new Integer(SIZE+1)); |
818 |
|
|
}}); |
819 |
|
|
|
820 |
|
|
t.start(); |
821 |
|
|
ArrayList l = new ArrayList(); |
822 |
|
|
q.drainTo(l); |
823 |
|
|
assertTrue(l.size() >= SIZE); |
824 |
|
|
for (int i = 0; i < SIZE; ++i) |
825 |
|
|
assertEquals(l.get(i), new Integer(i)); |
826 |
|
|
t.join(); |
827 |
|
|
assertTrue(q.size() + l.size() >= SIZE); |
828 |
dl |
1.6 |
} |
829 |
|
|
|
830 |
|
|
/** |
831 |
jsr166 |
1.34 |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
832 |
jsr166 |
1.12 |
*/ |
833 |
dl |
1.6 |
public void testDrainToN() { |
834 |
dl |
1.11 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2); |
835 |
dl |
1.6 |
for (int i = 0; i < SIZE + 2; ++i) { |
836 |
jsr166 |
1.13 |
for (int j = 0; j < SIZE; j++) |
837 |
dl |
1.11 |
assertTrue(q.offer(new Integer(j))); |
838 |
dl |
1.6 |
ArrayList l = new ArrayList(); |
839 |
|
|
q.drainTo(l, i); |
840 |
jsr166 |
1.35 |
int k = (i < SIZE) ? i : SIZE; |
841 |
dl |
1.11 |
assertEquals(l.size(), k); |
842 |
dl |
1.6 |
assertEquals(q.size(), SIZE-k); |
843 |
jsr166 |
1.12 |
for (int j = 0; j < k; ++j) |
844 |
dl |
1.6 |
assertEquals(l.get(j), new Integer(j)); |
845 |
dl |
1.11 |
while (q.poll() != null) ; |
846 |
dl |
1.2 |
} |
847 |
|
|
} |
848 |
|
|
|
849 |
dl |
1.1 |
} |