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 |
jsr166 |
1.58 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
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|
11 |
|
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import java.util.ArrayList; |
12 |
jsr166 |
1.48 |
import java.util.Arrays; |
13 |
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import java.util.Collection; |
14 |
jsr166 |
1.77 |
import java.util.Collections; |
15 |
jsr166 |
1.48 |
import java.util.Iterator; |
16 |
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import java.util.NoSuchElementException; |
17 |
jsr166 |
1.49 |
import java.util.Queue; |
18 |
jsr166 |
1.48 |
import java.util.concurrent.ArrayBlockingQueue; |
19 |
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import java.util.concurrent.BlockingQueue; |
20 |
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import java.util.concurrent.CountDownLatch; |
21 |
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import java.util.concurrent.Executors; |
22 |
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import java.util.concurrent.ExecutorService; |
23 |
jsr166 |
1.74 |
import java.util.concurrent.ThreadLocalRandom; |
24 |
jsr166 |
1.58 |
|
25 |
|
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import junit.framework.Test; |
26 |
dl |
1.1 |
|
27 |
dl |
1.3 |
public class ArrayBlockingQueueTest extends JSR166TestCase { |
28 |
jsr166 |
1.32 |
|
29 |
dl |
1.1 |
public static void main(String[] args) { |
30 |
jsr166 |
1.65 |
main(suite(), args); |
31 |
dl |
1.1 |
} |
32 |
jsr166 |
1.32 |
|
33 |
dl |
1.1 |
public static Test suite() { |
34 |
jsr166 |
1.73 |
class Implementation implements CollectionImplementation { |
35 |
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public Class<?> klazz() { return ArrayBlockingQueue.class; } |
36 |
jsr166 |
1.75 |
public Collection emptyCollection() { |
37 |
jsr166 |
1.94 |
boolean fair = randomBoolean(); |
38 |
jsr166 |
1.75 |
return populatedQueue(0, SIZE, 2 * SIZE, fair); |
39 |
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} |
40 |
jsr166 |
1.73 |
public Object makeElement(int i) { return i; } |
41 |
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public boolean isConcurrent() { return true; } |
42 |
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public boolean permitsNulls() { return false; } |
43 |
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} |
44 |
jsr166 |
1.76 |
|
45 |
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return newTestSuite( |
46 |
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ArrayBlockingQueueTest.class, |
47 |
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new Fair().testSuite(), |
48 |
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new NonFair().testSuite(), |
49 |
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CollectionTest.testSuite(new Implementation())); |
50 |
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} |
51 |
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52 |
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public static class Fair extends BlockingQueueTest { |
53 |
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protected BlockingQueue emptyCollection() { |
54 |
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return populatedQueue(0, SIZE, 2 * SIZE, true); |
55 |
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} |
56 |
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} |
57 |
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58 |
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public static class NonFair extends BlockingQueueTest { |
59 |
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protected BlockingQueue emptyCollection() { |
60 |
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return populatedQueue(0, SIZE, 2 * SIZE, false); |
61 |
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} |
62 |
dl |
1.1 |
} |
63 |
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64 |
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/** |
65 |
jsr166 |
1.54 |
* Returns a new queue of given size containing consecutive |
66 |
jsr166 |
1.72 |
* Integers 0 ... n - 1. |
67 |
dl |
1.1 |
*/ |
68 |
jsr166 |
1.75 |
static ArrayBlockingQueue<Integer> populatedQueue(int n) { |
69 |
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return populatedQueue(n, n, n, false); |
70 |
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} |
71 |
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72 |
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/** |
73 |
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* Returns a new queue of given size containing consecutive |
74 |
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* Integers 0 ... n - 1, with given capacity range and fairness. |
75 |
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*/ |
76 |
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static ArrayBlockingQueue<Integer> populatedQueue( |
77 |
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int size, int minCapacity, int maxCapacity, boolean fair) { |
78 |
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ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
79 |
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int capacity = rnd.nextInt(minCapacity, maxCapacity + 1); |
80 |
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ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
81 |
dl |
1.1 |
assertTrue(q.isEmpty()); |
82 |
jsr166 |
1.75 |
// shuffle circular array elements so they wrap |
83 |
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{ |
84 |
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int n = rnd.nextInt(capacity); |
85 |
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for (int i = 0; i < n; i++) q.add(42); |
86 |
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for (int i = 0; i < n; i++) q.remove(); |
87 |
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} |
88 |
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for (int i = 0; i < size; i++) |
89 |
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assertTrue(q.offer((Integer) i)); |
90 |
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assertEquals(size == 0, q.isEmpty()); |
91 |
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assertEquals(capacity - size, q.remainingCapacity()); |
92 |
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assertEquals(size, q.size()); |
93 |
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if (size > 0) |
94 |
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assertEquals((Integer) 0, q.peek()); |
95 |
dl |
1.1 |
return q; |
96 |
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} |
97 |
jsr166 |
1.12 |
|
98 |
dl |
1.4 |
/** |
99 |
dl |
1.5 |
* A new queue has the indicated capacity |
100 |
dl |
1.4 |
*/ |
101 |
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public void testConstructor1() { |
102 |
dl |
1.3 |
assertEquals(SIZE, new ArrayBlockingQueue(SIZE).remainingCapacity()); |
103 |
dl |
1.1 |
} |
104 |
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|
105 |
dl |
1.4 |
/** |
106 |
jsr166 |
1.91 |
* Constructor throws IllegalArgumentException if capacity argument nonpositive |
107 |
dl |
1.4 |
*/ |
108 |
jsr166 |
1.77 |
public void testConstructor_nonPositiveCapacity() { |
109 |
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for (int i : new int[] { 0, -1, Integer.MIN_VALUE }) { |
110 |
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try { |
111 |
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new ArrayBlockingQueue(i); |
112 |
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shouldThrow(); |
113 |
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} catch (IllegalArgumentException success) {} |
114 |
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for (boolean fair : new boolean[] { true, false }) { |
115 |
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try { |
116 |
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new ArrayBlockingQueue(i, fair); |
117 |
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shouldThrow(); |
118 |
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} catch (IllegalArgumentException success) {} |
119 |
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} |
120 |
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} |
121 |
dl |
1.1 |
} |
122 |
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123 |
dl |
1.4 |
/** |
124 |
dl |
1.5 |
* Initializing from null Collection throws NPE |
125 |
dl |
1.4 |
*/ |
126 |
jsr166 |
1.77 |
public void testConstructor_nullCollection() { |
127 |
dl |
1.1 |
try { |
128 |
jsr166 |
1.48 |
new ArrayBlockingQueue(1, true, null); |
129 |
dl |
1.4 |
shouldThrow(); |
130 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
131 |
dl |
1.1 |
} |
132 |
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|
133 |
dl |
1.4 |
/** |
134 |
dl |
1.5 |
* Initializing from Collection of null elements throws NPE |
135 |
dl |
1.4 |
*/ |
136 |
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public void testConstructor4() { |
137 |
jsr166 |
1.48 |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
138 |
dl |
1.1 |
try { |
139 |
jsr166 |
1.48 |
new ArrayBlockingQueue(SIZE, false, elements); |
140 |
dl |
1.4 |
shouldThrow(); |
141 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
142 |
dl |
1.1 |
} |
143 |
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|
144 |
dl |
1.4 |
/** |
145 |
dl |
1.5 |
* Initializing from Collection with some null elements throws NPE |
146 |
dl |
1.4 |
*/ |
147 |
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public void testConstructor5() { |
148 |
jsr166 |
1.48 |
Integer[] ints = new Integer[SIZE]; |
149 |
jsr166 |
1.66 |
for (int i = 0; i < SIZE - 1; ++i) |
150 |
jsr166 |
1.48 |
ints[i] = i; |
151 |
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Collection<Integer> elements = Arrays.asList(ints); |
152 |
dl |
1.1 |
try { |
153 |
jsr166 |
1.62 |
new ArrayBlockingQueue(SIZE, false, elements); |
154 |
dl |
1.4 |
shouldThrow(); |
155 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
156 |
dl |
1.1 |
} |
157 |
|
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|
158 |
dl |
1.4 |
/** |
159 |
jsr166 |
1.91 |
* Initializing from too large collection throws IllegalArgumentException |
160 |
dl |
1.4 |
*/ |
161 |
jsr166 |
1.77 |
public void testConstructor_collectionTooLarge() { |
162 |
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// just barely fits - succeeds |
163 |
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new ArrayBlockingQueue(SIZE, false, |
164 |
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Collections.nCopies(SIZE, "")); |
165 |
dl |
1.1 |
try { |
166 |
jsr166 |
1.77 |
new ArrayBlockingQueue(SIZE - 1, false, |
167 |
|
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Collections.nCopies(SIZE, "")); |
168 |
dl |
1.4 |
shouldThrow(); |
169 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
170 |
dl |
1.1 |
} |
171 |
|
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|
172 |
dl |
1.4 |
/** |
173 |
dl |
1.5 |
* Queue contains all elements of collection used to initialize |
174 |
dl |
1.4 |
*/ |
175 |
|
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public void testConstructor7() { |
176 |
jsr166 |
1.19 |
Integer[] ints = new Integer[SIZE]; |
177 |
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for (int i = 0; i < SIZE; ++i) |
178 |
jsr166 |
1.48 |
ints[i] = i; |
179 |
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Collection<Integer> elements = Arrays.asList(ints); |
180 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements); |
181 |
jsr166 |
1.19 |
for (int i = 0; i < SIZE; ++i) |
182 |
|
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assertEquals(ints[i], q.poll()); |
183 |
dl |
1.1 |
} |
184 |
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|
185 |
dl |
1.4 |
/** |
186 |
dl |
1.5 |
* Queue transitions from empty to full when elements added |
187 |
dl |
1.4 |
*/ |
188 |
dl |
1.1 |
public void testEmptyFull() { |
189 |
jsr166 |
1.77 |
BlockingQueue q = populatedQueue(0, 2, 2, false); |
190 |
dl |
1.1 |
assertTrue(q.isEmpty()); |
191 |
dl |
1.4 |
assertEquals(2, q.remainingCapacity()); |
192 |
dl |
1.3 |
q.add(one); |
193 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
194 |
jsr166 |
1.77 |
assertTrue(q.offer(two)); |
195 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
196 |
dl |
1.4 |
assertEquals(0, q.remainingCapacity()); |
197 |
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assertFalse(q.offer(three)); |
198 |
dl |
1.1 |
} |
199 |
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|
200 |
dl |
1.4 |
/** |
201 |
dl |
1.5 |
* remainingCapacity decreases on add, increases on remove |
202 |
dl |
1.4 |
*/ |
203 |
|
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public void testRemainingCapacity() { |
204 |
jsr166 |
1.77 |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
205 |
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BlockingQueue q = populatedQueue(size, size, 2 * size, false); |
206 |
|
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int spare = q.remainingCapacity(); |
207 |
|
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int capacity = spare + size; |
208 |
|
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for (int i = 0; i < size; i++) { |
209 |
|
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assertEquals(spare + i, q.remainingCapacity()); |
210 |
|
|
assertEquals(capacity, q.size() + q.remainingCapacity()); |
211 |
jsr166 |
1.64 |
assertEquals(i, q.remove()); |
212 |
dl |
1.1 |
} |
213 |
jsr166 |
1.77 |
for (int i = 0; i < size; i++) { |
214 |
|
|
assertEquals(capacity - i, q.remainingCapacity()); |
215 |
|
|
assertEquals(capacity, q.size() + q.remainingCapacity()); |
216 |
jsr166 |
1.64 |
assertTrue(q.add(i)); |
217 |
dl |
1.1 |
} |
218 |
|
|
} |
219 |
|
|
|
220 |
dl |
1.4 |
/** |
221 |
dl |
1.5 |
* Offer succeeds if not full; fails if full |
222 |
dl |
1.4 |
*/ |
223 |
|
|
public void testOffer() { |
224 |
dl |
1.1 |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
225 |
dl |
1.3 |
assertTrue(q.offer(zero)); |
226 |
|
|
assertFalse(q.offer(one)); |
227 |
dl |
1.1 |
} |
228 |
|
|
|
229 |
dl |
1.4 |
/** |
230 |
jsr166 |
1.91 |
* add succeeds if not full; throws IllegalStateException if full |
231 |
dl |
1.4 |
*/ |
232 |
|
|
public void testAdd() { |
233 |
jsr166 |
1.63 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
234 |
jsr166 |
1.78 |
for (int i = 0; i < SIZE; i++) assertTrue(q.add((Integer) i)); |
235 |
jsr166 |
1.63 |
assertEquals(0, q.remainingCapacity()); |
236 |
jsr166 |
1.15 |
try { |
237 |
jsr166 |
1.78 |
q.add((Integer) SIZE); |
238 |
jsr166 |
1.17 |
shouldThrow(); |
239 |
|
|
} catch (IllegalStateException success) {} |
240 |
dl |
1.1 |
} |
241 |
|
|
|
242 |
dl |
1.4 |
/** |
243 |
jsr166 |
1.91 |
* addAll(this) throws IllegalArgumentException |
244 |
dl |
1.6 |
*/ |
245 |
|
|
public void testAddAllSelf() { |
246 |
jsr166 |
1.63 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
247 |
dl |
1.6 |
try { |
248 |
|
|
q.addAll(q); |
249 |
|
|
shouldThrow(); |
250 |
jsr166 |
1.17 |
} catch (IllegalArgumentException success) {} |
251 |
dl |
1.6 |
} |
252 |
|
|
|
253 |
dl |
1.4 |
/** |
254 |
dl |
1.5 |
* addAll of a collection with any null elements throws NPE after |
255 |
|
|
* possibly adding some elements |
256 |
dl |
1.4 |
*/ |
257 |
|
|
public void testAddAll3() { |
258 |
jsr166 |
1.63 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
259 |
|
|
Integer[] ints = new Integer[SIZE]; |
260 |
jsr166 |
1.66 |
for (int i = 0; i < SIZE - 1; ++i) |
261 |
jsr166 |
1.63 |
ints[i] = new Integer(i); |
262 |
dl |
1.1 |
try { |
263 |
|
|
q.addAll(Arrays.asList(ints)); |
264 |
dl |
1.4 |
shouldThrow(); |
265 |
jsr166 |
1.17 |
} catch (NullPointerException success) {} |
266 |
dl |
1.1 |
} |
267 |
jsr166 |
1.30 |
|
268 |
dl |
1.4 |
/** |
269 |
jsr166 |
1.91 |
* addAll throws IllegalStateException if not enough room |
270 |
dl |
1.4 |
*/ |
271 |
jsr166 |
1.78 |
public void testAddAll_insufficientSpace() { |
272 |
jsr166 |
1.80 |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
273 |
jsr166 |
1.78 |
ArrayBlockingQueue q = populatedQueue(0, size, size, false); |
274 |
|
|
// Just fits: |
275 |
|
|
q.addAll(populatedQueue(size, size, 2 * size, false)); |
276 |
|
|
assertEquals(0, q.remainingCapacity()); |
277 |
|
|
assertEquals(size, q.size()); |
278 |
|
|
assertEquals(0, q.peek()); |
279 |
dl |
1.1 |
try { |
280 |
jsr166 |
1.78 |
q = populatedQueue(0, size, size, false); |
281 |
|
|
q.addAll(Collections.nCopies(size + 1, 42)); |
282 |
dl |
1.4 |
shouldThrow(); |
283 |
jsr166 |
1.17 |
} catch (IllegalStateException success) {} |
284 |
dl |
1.1 |
} |
285 |
jsr166 |
1.30 |
|
286 |
dl |
1.4 |
/** |
287 |
dl |
1.5 |
* Queue contains all elements, in traversal order, of successful addAll |
288 |
dl |
1.4 |
*/ |
289 |
|
|
public void testAddAll5() { |
290 |
jsr166 |
1.17 |
Integer[] empty = new Integer[0]; |
291 |
|
|
Integer[] ints = new Integer[SIZE]; |
292 |
|
|
for (int i = 0; i < SIZE; ++i) |
293 |
|
|
ints[i] = new Integer(i); |
294 |
|
|
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
295 |
|
|
assertFalse(q.addAll(Arrays.asList(empty))); |
296 |
|
|
assertTrue(q.addAll(Arrays.asList(ints))); |
297 |
|
|
for (int i = 0; i < SIZE; ++i) |
298 |
|
|
assertEquals(ints[i], q.poll()); |
299 |
dl |
1.1 |
} |
300 |
|
|
|
301 |
dl |
1.4 |
/** |
302 |
dl |
1.5 |
* all elements successfully put are contained |
303 |
dl |
1.4 |
*/ |
304 |
jsr166 |
1.17 |
public void testPut() throws InterruptedException { |
305 |
|
|
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
306 |
|
|
for (int i = 0; i < SIZE; ++i) { |
307 |
jsr166 |
1.60 |
Integer x = new Integer(i); |
308 |
|
|
q.put(x); |
309 |
|
|
assertTrue(q.contains(x)); |
310 |
dl |
1.1 |
} |
311 |
jsr166 |
1.17 |
assertEquals(0, q.remainingCapacity()); |
312 |
dl |
1.1 |
} |
313 |
|
|
|
314 |
dl |
1.4 |
/** |
315 |
dl |
1.5 |
* put blocks interruptibly if full |
316 |
dl |
1.4 |
*/ |
317 |
jsr166 |
1.17 |
public void testBlockingPut() throws InterruptedException { |
318 |
dl |
1.10 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
319 |
jsr166 |
1.47 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
320 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
321 |
jsr166 |
1.25 |
public void realRun() throws InterruptedException { |
322 |
|
|
for (int i = 0; i < SIZE; ++i) |
323 |
|
|
q.put(i); |
324 |
|
|
assertEquals(SIZE, q.size()); |
325 |
|
|
assertEquals(0, q.remainingCapacity()); |
326 |
jsr166 |
1.47 |
|
327 |
|
|
Thread.currentThread().interrupt(); |
328 |
|
|
try { |
329 |
|
|
q.put(99); |
330 |
|
|
shouldThrow(); |
331 |
|
|
} catch (InterruptedException success) {} |
332 |
|
|
assertFalse(Thread.interrupted()); |
333 |
|
|
|
334 |
|
|
pleaseInterrupt.countDown(); |
335 |
jsr166 |
1.17 |
try { |
336 |
jsr166 |
1.25 |
q.put(99); |
337 |
|
|
shouldThrow(); |
338 |
|
|
} catch (InterruptedException success) {} |
339 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
340 |
jsr166 |
1.25 |
}}); |
341 |
jsr166 |
1.17 |
|
342 |
jsr166 |
1.47 |
await(pleaseInterrupt); |
343 |
jsr166 |
1.93 |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
344 |
jsr166 |
1.17 |
t.interrupt(); |
345 |
jsr166 |
1.47 |
awaitTermination(t); |
346 |
jsr166 |
1.25 |
assertEquals(SIZE, q.size()); |
347 |
|
|
assertEquals(0, q.remainingCapacity()); |
348 |
dl |
1.1 |
} |
349 |
|
|
|
350 |
dl |
1.4 |
/** |
351 |
jsr166 |
1.47 |
* put blocks interruptibly waiting for take when full |
352 |
dl |
1.4 |
*/ |
353 |
jsr166 |
1.17 |
public void testPutWithTake() throws InterruptedException { |
354 |
jsr166 |
1.27 |
final int capacity = 2; |
355 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity); |
356 |
jsr166 |
1.47 |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
357 |
|
|
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
358 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
359 |
jsr166 |
1.27 |
public void realRun() throws InterruptedException { |
360 |
jsr166 |
1.47 |
for (int i = 0; i < capacity; i++) |
361 |
jsr166 |
1.27 |
q.put(i); |
362 |
jsr166 |
1.47 |
pleaseTake.countDown(); |
363 |
|
|
q.put(86); |
364 |
|
|
|
365 |
jsr166 |
1.89 |
Thread.currentThread().interrupt(); |
366 |
|
|
try { |
367 |
|
|
q.put(99); |
368 |
|
|
shouldThrow(); |
369 |
|
|
} catch (InterruptedException success) {} |
370 |
|
|
assertFalse(Thread.interrupted()); |
371 |
|
|
|
372 |
jsr166 |
1.47 |
pleaseInterrupt.countDown(); |
373 |
jsr166 |
1.17 |
try { |
374 |
jsr166 |
1.27 |
q.put(99); |
375 |
|
|
shouldThrow(); |
376 |
|
|
} catch (InterruptedException success) {} |
377 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
378 |
jsr166 |
1.17 |
}}); |
379 |
|
|
|
380 |
jsr166 |
1.47 |
await(pleaseTake); |
381 |
jsr166 |
1.51 |
assertEquals(0, q.remainingCapacity()); |
382 |
jsr166 |
1.27 |
assertEquals(0, q.take()); |
383 |
jsr166 |
1.47 |
|
384 |
|
|
await(pleaseInterrupt); |
385 |
jsr166 |
1.93 |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
386 |
jsr166 |
1.17 |
t.interrupt(); |
387 |
jsr166 |
1.47 |
awaitTermination(t); |
388 |
jsr166 |
1.51 |
assertEquals(0, q.remainingCapacity()); |
389 |
dl |
1.1 |
} |
390 |
|
|
|
391 |
dl |
1.4 |
/** |
392 |
dl |
1.5 |
* timed offer times out if full and elements not taken |
393 |
dl |
1.4 |
*/ |
394 |
jsr166 |
1.90 |
public void testTimedOffer() { |
395 |
dl |
1.1 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
396 |
jsr166 |
1.46 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
397 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
398 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
399 |
|
|
q.put(new Object()); |
400 |
|
|
q.put(new Object()); |
401 |
jsr166 |
1.46 |
long startTime = System.nanoTime(); |
402 |
|
|
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
403 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
404 |
jsr166 |
1.90 |
|
405 |
|
|
Thread.currentThread().interrupt(); |
406 |
|
|
try { |
407 |
jsr166 |
1.93 |
q.offer(new Object(), randomTimeout(), randomTimeUnit()); |
408 |
jsr166 |
1.90 |
shouldThrow(); |
409 |
|
|
} catch (InterruptedException success) {} |
410 |
|
|
assertFalse(Thread.interrupted()); |
411 |
|
|
|
412 |
jsr166 |
1.46 |
pleaseInterrupt.countDown(); |
413 |
jsr166 |
1.24 |
try { |
414 |
jsr166 |
1.95 |
q.offer(new Object(), LONGER_DELAY_MS, MILLISECONDS); |
415 |
jsr166 |
1.24 |
shouldThrow(); |
416 |
|
|
} catch (InterruptedException success) {} |
417 |
jsr166 |
1.87 |
assertFalse(Thread.interrupted()); |
418 |
jsr166 |
1.24 |
}}); |
419 |
jsr166 |
1.17 |
|
420 |
jsr166 |
1.46 |
await(pleaseInterrupt); |
421 |
jsr166 |
1.93 |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
422 |
jsr166 |
1.17 |
t.interrupt(); |
423 |
jsr166 |
1.46 |
awaitTermination(t); |
424 |
dl |
1.1 |
} |
425 |
|
|
|
426 |
dl |
1.4 |
/** |
427 |
dl |
1.5 |
* take retrieves elements in FIFO order |
428 |
dl |
1.4 |
*/ |
429 |
jsr166 |
1.17 |
public void testTake() throws InterruptedException { |
430 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
431 |
|
|
for (int i = 0; i < SIZE; ++i) { |
432 |
jsr166 |
1.25 |
assertEquals(i, q.take()); |
433 |
jsr166 |
1.15 |
} |
434 |
dl |
1.1 |
} |
435 |
|
|
|
436 |
dl |
1.4 |
/** |
437 |
dl |
1.5 |
* Take removes existing elements until empty, then blocks interruptibly |
438 |
dl |
1.4 |
*/ |
439 |
jsr166 |
1.17 |
public void testBlockingTake() throws InterruptedException { |
440 |
jsr166 |
1.25 |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
441 |
jsr166 |
1.47 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
442 |
|
|
Thread t = newStartedThread(new CheckedRunnable() { |
443 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
444 |
jsr166 |
1.82 |
for (int i = 0; i < SIZE; i++) assertEquals(i, q.take()); |
445 |
jsr166 |
1.47 |
|
446 |
|
|
Thread.currentThread().interrupt(); |
447 |
|
|
try { |
448 |
|
|
q.take(); |
449 |
|
|
shouldThrow(); |
450 |
|
|
} catch (InterruptedException success) {} |
451 |
|
|
assertFalse(Thread.interrupted()); |
452 |
|
|
|
453 |
|
|
pleaseInterrupt.countDown(); |
454 |
jsr166 |
1.25 |
try { |
455 |
|
|
q.take(); |
456 |
|
|
shouldThrow(); |
457 |
|
|
} catch (InterruptedException success) {} |
458 |
jsr166 |
1.47 |
assertFalse(Thread.interrupted()); |
459 |
jsr166 |
1.25 |
}}); |
460 |
jsr166 |
1.17 |
|
461 |
jsr166 |
1.47 |
await(pleaseInterrupt); |
462 |
jsr166 |
1.93 |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
463 |
jsr166 |
1.25 |
t.interrupt(); |
464 |
jsr166 |
1.47 |
awaitTermination(t); |
465 |
dl |
1.1 |
} |
466 |
|
|
|
467 |
dl |
1.4 |
/** |
468 |
dl |
1.5 |
* poll succeeds unless empty |
469 |
dl |
1.4 |
*/ |
470 |
|
|
public void testPoll() { |
471 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
472 |
|
|
for (int i = 0; i < SIZE; ++i) { |
473 |
jsr166 |
1.25 |
assertEquals(i, q.poll()); |
474 |
dl |
1.1 |
} |
475 |
jsr166 |
1.15 |
assertNull(q.poll()); |
476 |
dl |
1.1 |
} |
477 |
|
|
|
478 |
dl |
1.4 |
/** |
479 |
jsr166 |
1.37 |
* timed poll with zero timeout succeeds when non-empty, else times out |
480 |
dl |
1.4 |
*/ |
481 |
jsr166 |
1.17 |
public void testTimedPoll0() throws InterruptedException { |
482 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
483 |
|
|
for (int i = 0; i < SIZE; ++i) { |
484 |
jsr166 |
1.25 |
assertEquals(i, q.poll(0, MILLISECONDS)); |
485 |
jsr166 |
1.15 |
} |
486 |
jsr166 |
1.17 |
assertNull(q.poll(0, MILLISECONDS)); |
487 |
jsr166 |
1.47 |
checkEmpty(q); |
488 |
dl |
1.1 |
} |
489 |
|
|
|
490 |
dl |
1.4 |
/** |
491 |
jsr166 |
1.37 |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
492 |
dl |
1.4 |
*/ |
493 |
jsr166 |
1.17 |
public void testTimedPoll() throws InterruptedException { |
494 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
495 |
|
|
for (int i = 0; i < SIZE; ++i) { |
496 |
jsr166 |
1.47 |
long startTime = System.nanoTime(); |
497 |
|
|
assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
498 |
|
|
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
499 |
|
|
} |
500 |
|
|
long startTime = System.nanoTime(); |
501 |
|
|
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
502 |
|
|
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
503 |
|
|
checkEmpty(q); |
504 |
dl |
1.1 |
} |
505 |
|
|
|
506 |
dl |
1.4 |
/** |
507 |
dl |
1.5 |
* Interrupted timed poll throws InterruptedException instead of |
508 |
|
|
* returning timeout status |
509 |
dl |
1.4 |
*/ |
510 |
jsr166 |
1.17 |
public void testInterruptedTimedPoll() throws InterruptedException { |
511 |
jsr166 |
1.42 |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
512 |
jsr166 |
1.86 |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
513 |
jsr166 |
1.42 |
Thread t = newStartedThread(new CheckedRunnable() { |
514 |
jsr166 |
1.17 |
public void realRun() throws InterruptedException { |
515 |
jsr166 |
1.88 |
for (int i = 0; i < SIZE; i++) |
516 |
jsr166 |
1.70 |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
517 |
jsr166 |
1.88 |
|
518 |
|
|
Thread.currentThread().interrupt(); |
519 |
|
|
try { |
520 |
jsr166 |
1.93 |
q.poll(randomTimeout(), randomTimeUnit()); |
521 |
jsr166 |
1.88 |
shouldThrow(); |
522 |
|
|
} catch (InterruptedException success) {} |
523 |
|
|
assertFalse(Thread.interrupted()); |
524 |
jsr166 |
1.86 |
|
525 |
|
|
pleaseInterrupt.countDown(); |
526 |
jsr166 |
1.21 |
try { |
527 |
jsr166 |
1.96 |
q.poll(LONGER_DELAY_MS, MILLISECONDS); |
528 |
jsr166 |
1.22 |
shouldThrow(); |
529 |
jsr166 |
1.86 |
} catch (InterruptedException success) {} |
530 |
|
|
assertFalse(Thread.interrupted()); |
531 |
jsr166 |
1.21 |
}}); |
532 |
jsr166 |
1.17 |
|
533 |
jsr166 |
1.86 |
await(pleaseInterrupt); |
534 |
jsr166 |
1.93 |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
535 |
jsr166 |
1.17 |
t.interrupt(); |
536 |
jsr166 |
1.70 |
awaitTermination(t); |
537 |
jsr166 |
1.42 |
checkEmpty(q); |
538 |
dl |
1.1 |
} |
539 |
|
|
|
540 |
dl |
1.4 |
/** |
541 |
dl |
1.5 |
* peek returns next element, or null if empty |
542 |
dl |
1.4 |
*/ |
543 |
|
|
public void testPeek() { |
544 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
545 |
|
|
for (int i = 0; i < SIZE; ++i) { |
546 |
jsr166 |
1.26 |
assertEquals(i, q.peek()); |
547 |
|
|
assertEquals(i, q.poll()); |
548 |
dl |
1.1 |
assertTrue(q.peek() == null || |
549 |
jsr166 |
1.26 |
!q.peek().equals(i)); |
550 |
dl |
1.1 |
} |
551 |
jsr166 |
1.15 |
assertNull(q.peek()); |
552 |
dl |
1.1 |
} |
553 |
|
|
|
554 |
dl |
1.4 |
/** |
555 |
dl |
1.5 |
* element returns next element, or throws NSEE if empty |
556 |
dl |
1.4 |
*/ |
557 |
|
|
public void testElement() { |
558 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
559 |
|
|
for (int i = 0; i < SIZE; ++i) { |
560 |
jsr166 |
1.26 |
assertEquals(i, q.element()); |
561 |
|
|
assertEquals(i, q.poll()); |
562 |
dl |
1.1 |
} |
563 |
|
|
try { |
564 |
|
|
q.element(); |
565 |
dl |
1.4 |
shouldThrow(); |
566 |
jsr166 |
1.17 |
} catch (NoSuchElementException success) {} |
567 |
dl |
1.1 |
} |
568 |
|
|
|
569 |
dl |
1.4 |
/** |
570 |
dl |
1.5 |
* remove removes next element, or throws NSEE if empty |
571 |
dl |
1.4 |
*/ |
572 |
|
|
public void testRemove() { |
573 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
574 |
|
|
for (int i = 0; i < SIZE; ++i) { |
575 |
jsr166 |
1.26 |
assertEquals(i, q.remove()); |
576 |
dl |
1.1 |
} |
577 |
|
|
try { |
578 |
|
|
q.remove(); |
579 |
dl |
1.4 |
shouldThrow(); |
580 |
jsr166 |
1.17 |
} catch (NoSuchElementException success) {} |
581 |
dl |
1.1 |
} |
582 |
|
|
|
583 |
dl |
1.4 |
/** |
584 |
dl |
1.5 |
* contains(x) reports true when elements added but not yet removed |
585 |
dl |
1.4 |
*/ |
586 |
|
|
public void testContains() { |
587 |
jsr166 |
1.79 |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
588 |
|
|
ArrayBlockingQueue q = populatedQueue(size, size, 2 * size, false); |
589 |
|
|
assertFalse(q.contains(null)); |
590 |
|
|
for (int i = 0; i < size; ++i) { |
591 |
dl |
1.1 |
assertTrue(q.contains(new Integer(i))); |
592 |
jsr166 |
1.26 |
assertEquals(i, q.poll()); |
593 |
dl |
1.1 |
assertFalse(q.contains(new Integer(i))); |
594 |
|
|
} |
595 |
|
|
} |
596 |
|
|
|
597 |
dl |
1.4 |
/** |
598 |
dl |
1.5 |
* clear removes all elements |
599 |
dl |
1.4 |
*/ |
600 |
|
|
public void testClear() { |
601 |
jsr166 |
1.81 |
int size = ThreadLocalRandom.current().nextInt(1, 5); |
602 |
|
|
ArrayBlockingQueue q = populatedQueue(size, size, 2 * size, false); |
603 |
|
|
int capacity = size + q.remainingCapacity(); |
604 |
dl |
1.1 |
q.clear(); |
605 |
|
|
assertTrue(q.isEmpty()); |
606 |
|
|
assertEquals(0, q.size()); |
607 |
jsr166 |
1.81 |
assertEquals(capacity, q.remainingCapacity()); |
608 |
dl |
1.3 |
q.add(one); |
609 |
dl |
1.1 |
assertFalse(q.isEmpty()); |
610 |
dl |
1.11 |
assertTrue(q.contains(one)); |
611 |
dl |
1.1 |
q.clear(); |
612 |
|
|
assertTrue(q.isEmpty()); |
613 |
|
|
} |
614 |
|
|
|
615 |
dl |
1.4 |
/** |
616 |
dl |
1.5 |
* containsAll(c) is true when c contains a subset of elements |
617 |
dl |
1.4 |
*/ |
618 |
|
|
public void testContainsAll() { |
619 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
620 |
|
|
ArrayBlockingQueue p = new ArrayBlockingQueue(SIZE); |
621 |
|
|
for (int i = 0; i < SIZE; ++i) { |
622 |
dl |
1.1 |
assertTrue(q.containsAll(p)); |
623 |
|
|
assertFalse(p.containsAll(q)); |
624 |
|
|
p.add(new Integer(i)); |
625 |
|
|
} |
626 |
|
|
assertTrue(p.containsAll(q)); |
627 |
|
|
} |
628 |
|
|
|
629 |
dl |
1.4 |
/** |
630 |
dl |
1.5 |
* retainAll(c) retains only those elements of c and reports true if changed |
631 |
dl |
1.4 |
*/ |
632 |
|
|
public void testRetainAll() { |
633 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
634 |
|
|
ArrayBlockingQueue p = populatedQueue(SIZE); |
635 |
|
|
for (int i = 0; i < SIZE; ++i) { |
636 |
dl |
1.1 |
boolean changed = q.retainAll(p); |
637 |
|
|
if (i == 0) |
638 |
|
|
assertFalse(changed); |
639 |
|
|
else |
640 |
|
|
assertTrue(changed); |
641 |
|
|
|
642 |
|
|
assertTrue(q.containsAll(p)); |
643 |
jsr166 |
1.66 |
assertEquals(SIZE - i, q.size()); |
644 |
dl |
1.1 |
p.remove(); |
645 |
|
|
} |
646 |
|
|
} |
647 |
|
|
|
648 |
dl |
1.4 |
/** |
649 |
dl |
1.5 |
* removeAll(c) removes only those elements of c and reports true if changed |
650 |
dl |
1.4 |
*/ |
651 |
|
|
public void testRemoveAll() { |
652 |
dl |
1.3 |
for (int i = 1; i < SIZE; ++i) { |
653 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
654 |
|
|
ArrayBlockingQueue p = populatedQueue(i); |
655 |
dl |
1.1 |
assertTrue(q.removeAll(p)); |
656 |
jsr166 |
1.66 |
assertEquals(SIZE - i, q.size()); |
657 |
dl |
1.1 |
for (int j = 0; j < i; ++j) { |
658 |
jsr166 |
1.60 |
Integer x = (Integer)(p.remove()); |
659 |
|
|
assertFalse(q.contains(x)); |
660 |
dl |
1.1 |
} |
661 |
|
|
} |
662 |
|
|
} |
663 |
|
|
|
664 |
jsr166 |
1.74 |
void checkToArray(ArrayBlockingQueue<Integer> q) { |
665 |
jsr166 |
1.55 |
int size = q.size(); |
666 |
jsr166 |
1.74 |
Object[] a1 = q.toArray(); |
667 |
|
|
assertEquals(size, a1.length); |
668 |
|
|
Integer[] a2 = q.toArray(new Integer[0]); |
669 |
|
|
assertEquals(size, a2.length); |
670 |
|
|
Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]); |
671 |
|
|
assertEquals(size, a3.length); |
672 |
|
|
Integer[] a4 = new Integer[size]; |
673 |
|
|
assertSame(a4, q.toArray(a4)); |
674 |
|
|
Integer[] a5 = new Integer[size + 1]; |
675 |
|
|
Arrays.fill(a5, 42); |
676 |
|
|
assertSame(a5, q.toArray(a5)); |
677 |
|
|
Integer[] a6 = new Integer[size + 2]; |
678 |
|
|
Arrays.fill(a6, 42); |
679 |
|
|
assertSame(a6, q.toArray(a6)); |
680 |
|
|
Object[][] as = { a1, a2, a3, a4, a5, a6 }; |
681 |
|
|
for (Object[] a : as) { |
682 |
|
|
if (a.length > size) assertNull(a[size]); |
683 |
|
|
if (a.length > size + 1) assertEquals(42, a[size + 1]); |
684 |
|
|
} |
685 |
jsr166 |
1.55 |
Iterator it = q.iterator(); |
686 |
jsr166 |
1.74 |
Integer s = q.peek(); |
687 |
jsr166 |
1.55 |
for (int i = 0; i < size; i++) { |
688 |
|
|
Integer x = (Integer) it.next(); |
689 |
jsr166 |
1.74 |
assertEquals(s + i, (int) x); |
690 |
|
|
for (Object[] a : as) |
691 |
|
|
assertSame(a1[i], x); |
692 |
jsr166 |
1.55 |
} |
693 |
|
|
} |
694 |
|
|
|
695 |
dl |
1.4 |
/** |
696 |
jsr166 |
1.74 |
* toArray() and toArray(a) contain all elements in FIFO order |
697 |
dl |
1.4 |
*/ |
698 |
jsr166 |
1.40 |
public void testToArray() { |
699 |
jsr166 |
1.74 |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
700 |
|
|
final int size = rnd.nextInt(6); |
701 |
|
|
final int capacity = Math.max(1, size + rnd.nextInt(size + 1)); |
702 |
|
|
ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
703 |
|
|
for (int i = 0; i < size; i++) { |
704 |
jsr166 |
1.55 |
checkToArray(q); |
705 |
|
|
q.add(i); |
706 |
|
|
} |
707 |
|
|
// Provoke wraparound |
708 |
jsr166 |
1.74 |
int added = size * 2; |
709 |
|
|
for (int i = 0; i < added; i++) { |
710 |
jsr166 |
1.55 |
checkToArray(q); |
711 |
jsr166 |
1.74 |
assertEquals((Integer) i, q.poll()); |
712 |
|
|
q.add(size + i); |
713 |
jsr166 |
1.55 |
} |
714 |
jsr166 |
1.74 |
for (int i = 0; i < size; i++) { |
715 |
jsr166 |
1.55 |
checkToArray(q); |
716 |
jsr166 |
1.74 |
assertEquals((Integer) (added + i), q.poll()); |
717 |
jsr166 |
1.55 |
} |
718 |
dl |
1.1 |
} |
719 |
dl |
1.6 |
|
720 |
|
|
/** |
721 |
jsr166 |
1.38 |
* toArray(incompatible array type) throws ArrayStoreException |
722 |
dl |
1.6 |
*/ |
723 |
jsr166 |
1.74 |
public void testToArray_incompatibleArrayType() { |
724 |
jsr166 |
1.26 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
725 |
jsr166 |
1.15 |
try { |
726 |
jsr166 |
1.38 |
q.toArray(new String[10]); |
727 |
jsr166 |
1.15 |
shouldThrow(); |
728 |
jsr166 |
1.18 |
} catch (ArrayStoreException success) {} |
729 |
jsr166 |
1.74 |
try { |
730 |
|
|
q.toArray(new String[0]); |
731 |
|
|
shouldThrow(); |
732 |
|
|
} catch (ArrayStoreException success) {} |
733 |
dl |
1.6 |
} |
734 |
|
|
|
735 |
dl |
1.4 |
/** |
736 |
dl |
1.5 |
* iterator iterates through all elements |
737 |
dl |
1.4 |
*/ |
738 |
jsr166 |
1.17 |
public void testIterator() throws InterruptedException { |
739 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
740 |
jsr166 |
1.15 |
Iterator it = q.iterator(); |
741 |
jsr166 |
1.61 |
int i; |
742 |
|
|
for (i = 0; it.hasNext(); i++) |
743 |
|
|
assertTrue(q.contains(it.next())); |
744 |
|
|
assertEquals(i, SIZE); |
745 |
|
|
assertIteratorExhausted(it); |
746 |
|
|
|
747 |
|
|
it = q.iterator(); |
748 |
|
|
for (i = 0; it.hasNext(); i++) |
749 |
jsr166 |
1.17 |
assertEquals(it.next(), q.take()); |
750 |
jsr166 |
1.61 |
assertEquals(i, SIZE); |
751 |
|
|
assertIteratorExhausted(it); |
752 |
|
|
} |
753 |
|
|
|
754 |
|
|
/** |
755 |
|
|
* iterator of empty collection has no elements |
756 |
|
|
*/ |
757 |
|
|
public void testEmptyIterator() { |
758 |
|
|
assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator()); |
759 |
dl |
1.1 |
} |
760 |
|
|
|
761 |
dl |
1.4 |
/** |
762 |
dl |
1.5 |
* iterator.remove removes current element |
763 |
|
|
*/ |
764 |
jsr166 |
1.29 |
public void testIteratorRemove() { |
765 |
dl |
1.5 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
766 |
|
|
q.add(two); |
767 |
|
|
q.add(one); |
768 |
|
|
q.add(three); |
769 |
|
|
|
770 |
|
|
Iterator it = q.iterator(); |
771 |
|
|
it.next(); |
772 |
|
|
it.remove(); |
773 |
jsr166 |
1.12 |
|
774 |
dl |
1.5 |
it = q.iterator(); |
775 |
jsr166 |
1.28 |
assertSame(it.next(), one); |
776 |
|
|
assertSame(it.next(), three); |
777 |
dl |
1.5 |
assertFalse(it.hasNext()); |
778 |
|
|
} |
779 |
|
|
|
780 |
|
|
/** |
781 |
|
|
* iterator ordering is FIFO |
782 |
dl |
1.4 |
*/ |
783 |
dl |
1.1 |
public void testIteratorOrdering() { |
784 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
785 |
dl |
1.3 |
q.add(one); |
786 |
|
|
q.add(two); |
787 |
|
|
q.add(three); |
788 |
dl |
1.1 |
|
789 |
|
|
assertEquals("queue should be full", 0, q.remainingCapacity()); |
790 |
|
|
|
791 |
|
|
int k = 0; |
792 |
|
|
for (Iterator it = q.iterator(); it.hasNext();) { |
793 |
jsr166 |
1.26 |
assertEquals(++k, it.next()); |
794 |
dl |
1.1 |
} |
795 |
dl |
1.4 |
assertEquals(3, k); |
796 |
dl |
1.1 |
} |
797 |
|
|
|
798 |
dl |
1.4 |
/** |
799 |
dl |
1.5 |
* Modifications do not cause iterators to fail |
800 |
dl |
1.4 |
*/ |
801 |
jsr166 |
1.29 |
public void testWeaklyConsistentIteration() { |
802 |
dl |
1.1 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
803 |
dl |
1.3 |
q.add(one); |
804 |
|
|
q.add(two); |
805 |
|
|
q.add(three); |
806 |
jsr166 |
1.17 |
for (Iterator it = q.iterator(); it.hasNext();) { |
807 |
|
|
q.remove(); |
808 |
|
|
it.next(); |
809 |
dl |
1.1 |
} |
810 |
dl |
1.4 |
assertEquals(0, q.size()); |
811 |
dl |
1.1 |
} |
812 |
|
|
|
813 |
dl |
1.4 |
/** |
814 |
dl |
1.5 |
* toString contains toStrings of elements |
815 |
dl |
1.4 |
*/ |
816 |
|
|
public void testToString() { |
817 |
dl |
1.3 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
818 |
dl |
1.1 |
String s = q.toString(); |
819 |
dl |
1.3 |
for (int i = 0; i < SIZE; ++i) { |
820 |
jsr166 |
1.47 |
assertTrue(s.contains(String.valueOf(i))); |
821 |
dl |
1.1 |
} |
822 |
jsr166 |
1.12 |
} |
823 |
dl |
1.1 |
|
824 |
dl |
1.4 |
/** |
825 |
dl |
1.5 |
* offer transfers elements across Executor tasks |
826 |
dl |
1.4 |
*/ |
827 |
dl |
1.1 |
public void testOfferInExecutor() { |
828 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
829 |
dl |
1.3 |
q.add(one); |
830 |
|
|
q.add(two); |
831 |
jsr166 |
1.47 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
832 |
jsr166 |
1.68 |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
833 |
|
|
try (PoolCleaner cleaner = cleaner(executor)) { |
834 |
|
|
executor.execute(new CheckedRunnable() { |
835 |
|
|
public void realRun() throws InterruptedException { |
836 |
|
|
assertFalse(q.offer(three)); |
837 |
|
|
threadsStarted.await(); |
838 |
|
|
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
839 |
|
|
assertEquals(0, q.remainingCapacity()); |
840 |
|
|
}}); |
841 |
|
|
|
842 |
|
|
executor.execute(new CheckedRunnable() { |
843 |
|
|
public void realRun() throws InterruptedException { |
844 |
|
|
threadsStarted.await(); |
845 |
|
|
assertEquals(0, q.remainingCapacity()); |
846 |
|
|
assertSame(one, q.take()); |
847 |
|
|
}}); |
848 |
|
|
} |
849 |
dl |
1.1 |
} |
850 |
|
|
|
851 |
dl |
1.4 |
/** |
852 |
jsr166 |
1.47 |
* timed poll retrieves elements across Executor threads |
853 |
dl |
1.4 |
*/ |
854 |
dl |
1.1 |
public void testPollInExecutor() { |
855 |
|
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
856 |
jsr166 |
1.47 |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
857 |
jsr166 |
1.68 |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
858 |
|
|
try (PoolCleaner cleaner = cleaner(executor)) { |
859 |
|
|
executor.execute(new CheckedRunnable() { |
860 |
|
|
public void realRun() throws InterruptedException { |
861 |
|
|
assertNull(q.poll()); |
862 |
|
|
threadsStarted.await(); |
863 |
|
|
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
864 |
|
|
checkEmpty(q); |
865 |
|
|
}}); |
866 |
|
|
|
867 |
|
|
executor.execute(new CheckedRunnable() { |
868 |
|
|
public void realRun() throws InterruptedException { |
869 |
|
|
threadsStarted.await(); |
870 |
|
|
q.put(one); |
871 |
|
|
}}); |
872 |
|
|
} |
873 |
dl |
1.1 |
} |
874 |
dl |
1.2 |
|
875 |
dl |
1.4 |
/** |
876 |
jsr166 |
1.92 |
* A deserialized/reserialized queue has same elements in same order |
877 |
dl |
1.4 |
*/ |
878 |
jsr166 |
1.17 |
public void testSerialization() throws Exception { |
879 |
jsr166 |
1.49 |
Queue x = populatedQueue(SIZE); |
880 |
|
|
Queue y = serialClone(x); |
881 |
dl |
1.2 |
|
882 |
jsr166 |
1.56 |
assertNotSame(x, y); |
883 |
jsr166 |
1.49 |
assertEquals(x.size(), y.size()); |
884 |
|
|
assertEquals(x.toString(), y.toString()); |
885 |
|
|
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
886 |
|
|
while (!x.isEmpty()) { |
887 |
|
|
assertFalse(y.isEmpty()); |
888 |
|
|
assertEquals(x.remove(), y.remove()); |
889 |
|
|
} |
890 |
|
|
assertTrue(y.isEmpty()); |
891 |
dl |
1.6 |
} |
892 |
|
|
|
893 |
|
|
/** |
894 |
|
|
* drainTo(c) empties queue into another collection c |
895 |
jsr166 |
1.12 |
*/ |
896 |
dl |
1.6 |
public void testDrainTo() { |
897 |
|
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
898 |
|
|
ArrayList l = new ArrayList(); |
899 |
|
|
q.drainTo(l); |
900 |
jsr166 |
1.51 |
assertEquals(0, q.size()); |
901 |
|
|
assertEquals(SIZE, l.size()); |
902 |
jsr166 |
1.12 |
for (int i = 0; i < SIZE; ++i) |
903 |
dl |
1.6 |
assertEquals(l.get(i), new Integer(i)); |
904 |
dl |
1.11 |
q.add(zero); |
905 |
|
|
q.add(one); |
906 |
|
|
assertFalse(q.isEmpty()); |
907 |
|
|
assertTrue(q.contains(zero)); |
908 |
|
|
assertTrue(q.contains(one)); |
909 |
|
|
l.clear(); |
910 |
|
|
q.drainTo(l); |
911 |
jsr166 |
1.51 |
assertEquals(0, q.size()); |
912 |
|
|
assertEquals(2, l.size()); |
913 |
jsr166 |
1.12 |
for (int i = 0; i < 2; ++i) |
914 |
dl |
1.11 |
assertEquals(l.get(i), new Integer(i)); |
915 |
dl |
1.6 |
} |
916 |
|
|
|
917 |
|
|
/** |
918 |
|
|
* drainTo empties full queue, unblocking a waiting put. |
919 |
jsr166 |
1.12 |
*/ |
920 |
jsr166 |
1.17 |
public void testDrainToWithActivePut() throws InterruptedException { |
921 |
dl |
1.6 |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
922 |
jsr166 |
1.17 |
Thread t = new Thread(new CheckedRunnable() { |
923 |
|
|
public void realRun() throws InterruptedException { |
924 |
jsr166 |
1.66 |
q.put(new Integer(SIZE + 1)); |
925 |
jsr166 |
1.17 |
}}); |
926 |
|
|
|
927 |
|
|
t.start(); |
928 |
|
|
ArrayList l = new ArrayList(); |
929 |
|
|
q.drainTo(l); |
930 |
|
|
assertTrue(l.size() >= SIZE); |
931 |
|
|
for (int i = 0; i < SIZE; ++i) |
932 |
|
|
assertEquals(l.get(i), new Integer(i)); |
933 |
|
|
t.join(); |
934 |
|
|
assertTrue(q.size() + l.size() >= SIZE); |
935 |
dl |
1.6 |
} |
936 |
|
|
|
937 |
|
|
/** |
938 |
jsr166 |
1.34 |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
939 |
jsr166 |
1.12 |
*/ |
940 |
dl |
1.6 |
public void testDrainToN() { |
941 |
jsr166 |
1.66 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE * 2); |
942 |
dl |
1.6 |
for (int i = 0; i < SIZE + 2; ++i) { |
943 |
jsr166 |
1.13 |
for (int j = 0; j < SIZE; j++) |
944 |
dl |
1.11 |
assertTrue(q.offer(new Integer(j))); |
945 |
dl |
1.6 |
ArrayList l = new ArrayList(); |
946 |
|
|
q.drainTo(l, i); |
947 |
jsr166 |
1.35 |
int k = (i < SIZE) ? i : SIZE; |
948 |
jsr166 |
1.52 |
assertEquals(k, l.size()); |
949 |
jsr166 |
1.66 |
assertEquals(SIZE - k, q.size()); |
950 |
jsr166 |
1.12 |
for (int j = 0; j < k; ++j) |
951 |
dl |
1.6 |
assertEquals(l.get(j), new Integer(j)); |
952 |
jsr166 |
1.59 |
do {} while (q.poll() != null); |
953 |
dl |
1.2 |
} |
954 |
|
|
} |
955 |
|
|
|
956 |
jsr166 |
1.57 |
/** |
957 |
|
|
* remove(null), contains(null) always return false |
958 |
|
|
*/ |
959 |
|
|
public void testNeverContainsNull() { |
960 |
|
|
Collection<?>[] qs = { |
961 |
jsr166 |
1.80 |
populatedQueue(0, 1, 10, false), |
962 |
|
|
populatedQueue(2, 2, 10, true), |
963 |
jsr166 |
1.57 |
}; |
964 |
|
|
|
965 |
|
|
for (Collection<?> q : qs) { |
966 |
|
|
assertFalse(q.contains(null)); |
967 |
|
|
assertFalse(q.remove(null)); |
968 |
|
|
} |
969 |
|
|
} |
970 |
dl |
1.1 |
} |