1 |
dl |
1.1 |
/* |
2 |
dl |
1.6 |
* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
|
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* Expert Group and released to the public domain, as explained at |
4 |
jsr166 |
1.19 |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
jsr166 |
1.11 |
* 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 |
1.21 |
import java.util.Arrays; |
10 |
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import java.util.concurrent.atomic.AtomicReferenceArray; |
11 |
dl |
1.1 |
|
12 |
jsr166 |
1.29 |
import junit.framework.Test; |
13 |
|
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import junit.framework.TestSuite; |
14 |
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|
15 |
jsr166 |
1.13 |
public class AtomicReferenceArrayTest extends JSR166TestCase { |
16 |
jsr166 |
1.18 |
public static void main(String[] args) { |
17 |
jsr166 |
1.32 |
main(suite(), args); |
18 |
dl |
1.1 |
} |
19 |
|
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public static Test suite() { |
20 |
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return new TestSuite(AtomicReferenceArrayTest.class); |
21 |
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} |
22 |
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23 |
dl |
1.4 |
/** |
24 |
dl |
1.5 |
* constructor creates array of given size with all elements null |
25 |
dl |
1.4 |
*/ |
26 |
jsr166 |
1.13 |
public void testConstructor() { |
27 |
jsr166 |
1.26 |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
28 |
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for (int i = 0; i < SIZE; i++) { |
29 |
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assertNull(aa.get(i)); |
30 |
dl |
1.1 |
} |
31 |
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} |
32 |
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|
33 |
dl |
1.4 |
/** |
34 |
dl |
1.7 |
* constructor with null array throws NPE |
35 |
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*/ |
36 |
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public void testConstructor2NPE() { |
37 |
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try { |
38 |
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Integer[] a = null; |
39 |
jsr166 |
1.31 |
new AtomicReferenceArray<Integer>(a); |
40 |
jsr166 |
1.14 |
shouldThrow(); |
41 |
jsr166 |
1.15 |
} catch (NullPointerException success) {} |
42 |
dl |
1.7 |
} |
43 |
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44 |
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/** |
45 |
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* constructor with array is of same size and has all elements |
46 |
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*/ |
47 |
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public void testConstructor2() { |
48 |
jsr166 |
1.23 |
Integer[] a = { two, one, three, four, seven }; |
49 |
jsr166 |
1.26 |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a); |
50 |
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assertEquals(a.length, aa.length()); |
51 |
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for (int i = 0; i < a.length; i++) |
52 |
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assertEquals(a[i], aa.get(i)); |
53 |
dl |
1.7 |
} |
54 |
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55 |
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/** |
56 |
jsr166 |
1.27 |
* Initialize AtomicReferenceArray<Class> with SubClass[] |
57 |
jsr166 |
1.22 |
*/ |
58 |
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public void testConstructorSubClassArray() { |
59 |
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Integer[] a = { two, one, three, four, seven }; |
60 |
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AtomicReferenceArray<Number> aa = new AtomicReferenceArray<Number>(a); |
61 |
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assertEquals(a.length, aa.length()); |
62 |
jsr166 |
1.26 |
for (int i = 0; i < a.length; i++) { |
63 |
jsr166 |
1.22 |
assertSame(a[i], aa.get(i)); |
64 |
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Long x = Long.valueOf(i); |
65 |
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aa.set(i, x); |
66 |
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assertSame(x, aa.get(i)); |
67 |
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} |
68 |
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} |
69 |
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70 |
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/** |
71 |
dl |
1.5 |
* get and set for out of bound indices throw IndexOutOfBoundsException |
72 |
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*/ |
73 |
jsr166 |
1.13 |
public void testIndexing() { |
74 |
jsr166 |
1.26 |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
75 |
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for (int index : new int[] { -1, SIZE }) { |
76 |
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try { |
77 |
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aa.get(index); |
78 |
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shouldThrow(); |
79 |
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} catch (IndexOutOfBoundsException success) {} |
80 |
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try { |
81 |
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aa.set(index, null); |
82 |
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shouldThrow(); |
83 |
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} catch (IndexOutOfBoundsException success) {} |
84 |
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try { |
85 |
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aa.lazySet(index, null); |
86 |
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shouldThrow(); |
87 |
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} catch (IndexOutOfBoundsException success) {} |
88 |
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try { |
89 |
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aa.compareAndSet(index, null, null); |
90 |
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shouldThrow(); |
91 |
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} catch (IndexOutOfBoundsException success) {} |
92 |
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try { |
93 |
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aa.weakCompareAndSet(index, null, null); |
94 |
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shouldThrow(); |
95 |
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} catch (IndexOutOfBoundsException success) {} |
96 |
dl |
1.33 |
try { |
97 |
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aa.getPlain(index); |
98 |
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shouldThrow(); |
99 |
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} catch (IndexOutOfBoundsException success) {} |
100 |
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try { |
101 |
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aa.getOpaque(index); |
102 |
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shouldThrow(); |
103 |
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} catch (IndexOutOfBoundsException success) {} |
104 |
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try { |
105 |
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aa.getAcquire(index); |
106 |
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shouldThrow(); |
107 |
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} catch (IndexOutOfBoundsException success) {} |
108 |
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try { |
109 |
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aa.setPlain(index, null); |
110 |
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shouldThrow(); |
111 |
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} catch (IndexOutOfBoundsException success) {} |
112 |
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try { |
113 |
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aa.setOpaque(index, null); |
114 |
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shouldThrow(); |
115 |
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} catch (IndexOutOfBoundsException success) {} |
116 |
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try { |
117 |
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aa.setRelease(index, null); |
118 |
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shouldThrow(); |
119 |
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} catch (IndexOutOfBoundsException success) {} |
120 |
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try { |
121 |
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aa.compareAndExchange(index, null, null); |
122 |
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shouldThrow(); |
123 |
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} catch (IndexOutOfBoundsException success) {} |
124 |
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try { |
125 |
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aa.compareAndExchangeAcquire(index, null, null); |
126 |
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shouldThrow(); |
127 |
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} catch (IndexOutOfBoundsException success) {} |
128 |
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try { |
129 |
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aa.compareAndExchangeRelease(index, null, null); |
130 |
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shouldThrow(); |
131 |
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} catch (IndexOutOfBoundsException success) {} |
132 |
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try { |
133 |
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aa.weakCompareAndSetVolatile(index, null, null); |
134 |
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shouldThrow(); |
135 |
|
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} catch (IndexOutOfBoundsException success) {} |
136 |
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try { |
137 |
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aa.weakCompareAndSetAcquire(index, null, null); |
138 |
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shouldThrow(); |
139 |
|
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} catch (IndexOutOfBoundsException success) {} |
140 |
|
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try { |
141 |
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aa.weakCompareAndSetRelease(index, null, null); |
142 |
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shouldThrow(); |
143 |
|
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} catch (IndexOutOfBoundsException success) {} |
144 |
dl |
1.5 |
} |
145 |
|
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} |
146 |
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|
147 |
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/** |
148 |
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* get returns the last value set at index |
149 |
dl |
1.4 |
*/ |
150 |
jsr166 |
1.13 |
public void testGetSet() { |
151 |
jsr166 |
1.26 |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
152 |
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for (int i = 0; i < SIZE; i++) { |
153 |
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aa.set(i, one); |
154 |
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assertSame(one, aa.get(i)); |
155 |
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aa.set(i, two); |
156 |
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assertSame(two, aa.get(i)); |
157 |
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aa.set(i, m3); |
158 |
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assertSame(m3, aa.get(i)); |
159 |
dl |
1.1 |
} |
160 |
|
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} |
161 |
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|
162 |
dl |
1.4 |
/** |
163 |
dl |
1.10 |
* get returns the last value lazySet at index by same thread |
164 |
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*/ |
165 |
jsr166 |
1.13 |
public void testGetLazySet() { |
166 |
jsr166 |
1.26 |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
167 |
|
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for (int i = 0; i < SIZE; i++) { |
168 |
|
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aa.lazySet(i, one); |
169 |
|
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assertSame(one, aa.get(i)); |
170 |
|
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aa.lazySet(i, two); |
171 |
|
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assertSame(two, aa.get(i)); |
172 |
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aa.lazySet(i, m3); |
173 |
|
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assertSame(m3, aa.get(i)); |
174 |
dl |
1.10 |
} |
175 |
|
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} |
176 |
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|
177 |
|
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/** |
178 |
dl |
1.5 |
* compareAndSet succeeds in changing value if equal to expected else fails |
179 |
dl |
1.4 |
*/ |
180 |
jsr166 |
1.13 |
public void testCompareAndSet() { |
181 |
jsr166 |
1.26 |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
182 |
|
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for (int i = 0; i < SIZE; i++) { |
183 |
|
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aa.set(i, one); |
184 |
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assertTrue(aa.compareAndSet(i, one, two)); |
185 |
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assertTrue(aa.compareAndSet(i, two, m4)); |
186 |
|
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assertSame(m4, aa.get(i)); |
187 |
|
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assertFalse(aa.compareAndSet(i, m5, seven)); |
188 |
|
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assertSame(m4, aa.get(i)); |
189 |
|
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assertTrue(aa.compareAndSet(i, m4, seven)); |
190 |
|
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assertSame(seven, aa.get(i)); |
191 |
dl |
1.1 |
} |
192 |
|
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} |
193 |
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|
194 |
dl |
1.4 |
/** |
195 |
dl |
1.5 |
* compareAndSet in one thread enables another waiting for value |
196 |
|
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* to succeed |
197 |
|
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*/ |
198 |
jsr166 |
1.15 |
public void testCompareAndSetInMultipleThreads() throws InterruptedException { |
199 |
dl |
1.5 |
final AtomicReferenceArray a = new AtomicReferenceArray(1); |
200 |
|
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a.set(0, one); |
201 |
jsr166 |
1.16 |
Thread t = new Thread(new CheckedRunnable() { |
202 |
|
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public void realRun() { |
203 |
|
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while (!a.compareAndSet(0, two, three)) |
204 |
|
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Thread.yield(); |
205 |
|
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}}); |
206 |
jsr166 |
1.15 |
|
207 |
|
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t.start(); |
208 |
|
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assertTrue(a.compareAndSet(0, one, two)); |
209 |
|
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t.join(LONG_DELAY_MS); |
210 |
|
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assertFalse(t.isAlive()); |
211 |
jsr166 |
1.25 |
assertSame(three, a.get(0)); |
212 |
dl |
1.5 |
} |
213 |
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|
214 |
|
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/** |
215 |
|
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* repeated weakCompareAndSet succeeds in changing value when equal |
216 |
jsr166 |
1.11 |
* to expected |
217 |
dl |
1.4 |
*/ |
218 |
jsr166 |
1.13 |
public void testWeakCompareAndSet() { |
219 |
jsr166 |
1.26 |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
220 |
|
|
for (int i = 0; i < SIZE; i++) { |
221 |
|
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aa.set(i, one); |
222 |
jsr166 |
1.30 |
do {} while (!aa.weakCompareAndSet(i, one, two)); |
223 |
|
|
do {} while (!aa.weakCompareAndSet(i, two, m4)); |
224 |
jsr166 |
1.26 |
assertSame(m4, aa.get(i)); |
225 |
jsr166 |
1.30 |
do {} while (!aa.weakCompareAndSet(i, m4, seven)); |
226 |
jsr166 |
1.26 |
assertSame(seven, aa.get(i)); |
227 |
dl |
1.1 |
} |
228 |
|
|
} |
229 |
|
|
|
230 |
dl |
1.4 |
/** |
231 |
dl |
1.5 |
* getAndSet returns previous value and sets to given value at given index |
232 |
dl |
1.4 |
*/ |
233 |
jsr166 |
1.13 |
public void testGetAndSet() { |
234 |
jsr166 |
1.26 |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
235 |
|
|
for (int i = 0; i < SIZE; i++) { |
236 |
|
|
aa.set(i, one); |
237 |
|
|
assertSame(one, aa.getAndSet(i, zero)); |
238 |
|
|
assertSame(zero, aa.getAndSet(i, m10)); |
239 |
|
|
assertSame(m10, aa.getAndSet(i, one)); |
240 |
dl |
1.1 |
} |
241 |
|
|
} |
242 |
|
|
|
243 |
dl |
1.4 |
/** |
244 |
dl |
1.5 |
* a deserialized serialized array holds same values |
245 |
dl |
1.4 |
*/ |
246 |
jsr166 |
1.15 |
public void testSerialization() throws Exception { |
247 |
jsr166 |
1.21 |
AtomicReferenceArray x = new AtomicReferenceArray(SIZE); |
248 |
|
|
for (int i = 0; i < SIZE; i++) { |
249 |
|
|
x.set(i, new Integer(-i)); |
250 |
|
|
} |
251 |
|
|
AtomicReferenceArray y = serialClone(x); |
252 |
jsr166 |
1.28 |
assertNotSame(x, y); |
253 |
jsr166 |
1.21 |
assertEquals(x.length(), y.length()); |
254 |
|
|
for (int i = 0; i < SIZE; i++) { |
255 |
|
|
assertEquals(x.get(i), y.get(i)); |
256 |
dl |
1.2 |
} |
257 |
|
|
} |
258 |
dl |
1.1 |
|
259 |
dl |
1.9 |
/** |
260 |
|
|
* toString returns current value. |
261 |
jsr166 |
1.11 |
*/ |
262 |
dl |
1.9 |
public void testToString() { |
263 |
jsr166 |
1.23 |
Integer[] a = { two, one, three, four, seven }; |
264 |
jsr166 |
1.26 |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a); |
265 |
|
|
assertEquals(Arrays.toString(a), aa.toString()); |
266 |
dl |
1.9 |
} |
267 |
dl |
1.33 |
|
268 |
|
|
// jdk9 |
269 |
|
|
|
270 |
|
|
/** |
271 |
|
|
* getPlain returns the last value set |
272 |
|
|
*/ |
273 |
|
|
public void testGetPlainSet() { |
274 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
275 |
|
|
for (int i = 0; i < SIZE; i++) { |
276 |
|
|
aa.set(i, one); |
277 |
|
|
assertEquals(one, aa.getPlain(i)); |
278 |
|
|
aa.set(i, two); |
279 |
|
|
assertEquals(two, aa.getPlain(i)); |
280 |
|
|
aa.set(i, m3); |
281 |
|
|
assertEquals(m3, aa.getPlain(i)); |
282 |
|
|
} |
283 |
|
|
} |
284 |
|
|
|
285 |
|
|
/** |
286 |
|
|
* getOpaque returns the last value set |
287 |
|
|
*/ |
288 |
|
|
public void testGetOpaqueSet() { |
289 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
290 |
|
|
for (int i = 0; i < SIZE; i++) { |
291 |
|
|
aa.set(i, one); |
292 |
|
|
assertEquals(one, aa.getOpaque(i)); |
293 |
|
|
aa.set(i, two); |
294 |
|
|
assertEquals(two, aa.getOpaque(i)); |
295 |
|
|
aa.set(i, m3); |
296 |
|
|
assertEquals(m3, aa.getOpaque(i)); |
297 |
|
|
} |
298 |
|
|
} |
299 |
|
|
|
300 |
|
|
/** |
301 |
|
|
* getAcquire returns the last value set |
302 |
|
|
*/ |
303 |
|
|
public void testGetAcquireSet() { |
304 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
305 |
|
|
for (int i = 0; i < SIZE; i++) { |
306 |
|
|
aa.set(i, one); |
307 |
|
|
assertEquals(one, aa.getAcquire(i)); |
308 |
|
|
aa.set(i, two); |
309 |
|
|
assertEquals(two, aa.getAcquire(i)); |
310 |
|
|
aa.set(i, m3); |
311 |
|
|
assertEquals(m3, aa.getAcquire(i)); |
312 |
|
|
} |
313 |
|
|
} |
314 |
|
|
|
315 |
|
|
/** |
316 |
|
|
* get returns the last value setPlain |
317 |
|
|
*/ |
318 |
|
|
public void testGetSetPlain() { |
319 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
320 |
|
|
for (int i = 0; i < SIZE; i++) { |
321 |
|
|
aa.setPlain(i, one); |
322 |
|
|
assertEquals(one, aa.get(i)); |
323 |
|
|
aa.setPlain(i, two); |
324 |
|
|
assertEquals(two, aa.get(i)); |
325 |
|
|
aa.setPlain(i, m3); |
326 |
|
|
assertEquals(m3, aa.get(i)); |
327 |
|
|
} |
328 |
|
|
} |
329 |
|
|
|
330 |
|
|
/** |
331 |
|
|
* get returns the last value setOpaque |
332 |
|
|
*/ |
333 |
|
|
public void testGetSetOpaque() { |
334 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
335 |
|
|
for (int i = 0; i < SIZE; i++) { |
336 |
|
|
aa.setOpaque(i, one); |
337 |
|
|
assertEquals(one, aa.get(i)); |
338 |
|
|
aa.setOpaque(i, two); |
339 |
|
|
assertEquals(two, aa.get(i)); |
340 |
|
|
aa.setOpaque(i, m3); |
341 |
|
|
assertEquals(m3, aa.get(i)); |
342 |
|
|
} |
343 |
|
|
} |
344 |
|
|
|
345 |
|
|
/** |
346 |
|
|
* get returns the last value setRelease |
347 |
|
|
*/ |
348 |
|
|
public void testGetSetRelease() { |
349 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
350 |
|
|
for (int i = 0; i < SIZE; i++) { |
351 |
|
|
aa.setRelease(i, one); |
352 |
|
|
assertEquals(one, aa.get(i)); |
353 |
|
|
aa.setRelease(i, two); |
354 |
|
|
assertEquals(two, aa.get(i)); |
355 |
|
|
aa.setRelease(i, m3); |
356 |
|
|
assertEquals(m3, aa.get(i)); |
357 |
|
|
} |
358 |
|
|
} |
359 |
|
|
|
360 |
|
|
/** |
361 |
|
|
* compareAndExchange succeeds in changing value if equal to |
362 |
|
|
* expected else fails |
363 |
|
|
*/ |
364 |
|
|
public void testCompareAndExchange() { |
365 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
366 |
|
|
for (int i = 0; i < SIZE; i++) { |
367 |
|
|
aa.set(i, one); |
368 |
|
|
assertEquals(one, aa.compareAndExchange(i, one, two)); |
369 |
|
|
assertEquals(two, aa.compareAndExchange(i, two, m4)); |
370 |
|
|
assertEquals(m4, aa.get(i)); |
371 |
|
|
assertEquals(m4, aa.compareAndExchange(i,m5, seven)); |
372 |
|
|
assertEquals(m4, aa.get(i)); |
373 |
|
|
assertEquals(m4, aa.compareAndExchange(i, m4, seven)); |
374 |
|
|
assertEquals(seven, aa.get(i)); |
375 |
|
|
} |
376 |
|
|
} |
377 |
|
|
|
378 |
|
|
/** |
379 |
|
|
* compareAndExchangeAcquire succeeds in changing value if equal to |
380 |
|
|
* expected else fails |
381 |
|
|
*/ |
382 |
|
|
public void testCompareAndExchangeAcquire() { |
383 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
384 |
|
|
for (int i = 0; i < SIZE; i++) { |
385 |
|
|
aa.set(i, one); |
386 |
|
|
assertEquals(one, aa.compareAndExchangeAcquire(i, one, two)); |
387 |
|
|
assertEquals(two, aa.compareAndExchangeAcquire(i, two, m4)); |
388 |
|
|
assertEquals(m4, aa.get(i)); |
389 |
|
|
assertEquals(m4, aa.compareAndExchangeAcquire(i,m5, seven)); |
390 |
|
|
assertEquals(m4, aa.get(i)); |
391 |
|
|
assertEquals(m4, aa.compareAndExchangeAcquire(i, m4, seven)); |
392 |
|
|
assertEquals(seven, aa.get(i)); |
393 |
|
|
} |
394 |
|
|
} |
395 |
|
|
|
396 |
|
|
/** |
397 |
|
|
* compareAndExchangeRelease succeeds in changing value if equal to |
398 |
|
|
* expected else fails |
399 |
|
|
*/ |
400 |
|
|
public void testCompareAndExchangeRelease() { |
401 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
402 |
|
|
for (int i = 0; i < SIZE; i++) { |
403 |
|
|
aa.set(i, one); |
404 |
|
|
assertEquals(one, aa.compareAndExchangeRelease(i, one, two)); |
405 |
|
|
assertEquals(two, aa.compareAndExchangeRelease(i, two, m4)); |
406 |
|
|
assertEquals(m4, aa.get(i)); |
407 |
|
|
assertEquals(m4, aa.compareAndExchangeRelease(i,m5, seven)); |
408 |
|
|
assertEquals(m4, aa.get(i)); |
409 |
|
|
assertEquals(m4, aa.compareAndExchangeRelease(i, m4, seven)); |
410 |
|
|
assertEquals(seven, aa.get(i)); |
411 |
|
|
} |
412 |
|
|
} |
413 |
|
|
|
414 |
|
|
/** |
415 |
|
|
* repeated weakCompareAndSetVolatile succeeds in changing value when equal |
416 |
|
|
* to expected |
417 |
|
|
*/ |
418 |
|
|
public void testWeakCompareAndSetVolatile() { |
419 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
420 |
|
|
for (int i = 0; i < SIZE; i++) { |
421 |
|
|
aa.set(i, one); |
422 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, one, two)); |
423 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, two, m4)); |
424 |
|
|
assertEquals(m4, aa.get(i)); |
425 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, m4, seven)); |
426 |
|
|
assertEquals(seven, aa.get(i)); |
427 |
|
|
} |
428 |
|
|
} |
429 |
|
|
|
430 |
|
|
/** |
431 |
|
|
* repeated weakCompareAndSetAcquire succeeds in changing value when equal |
432 |
|
|
* to expected |
433 |
|
|
*/ |
434 |
|
|
public void testWeakCompareAndSetAcquire() { |
435 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
436 |
|
|
for (int i = 0; i < SIZE; i++) { |
437 |
|
|
aa.set(i, one); |
438 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, one, two)); |
439 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, two, m4)); |
440 |
|
|
assertEquals(m4, aa.get(i)); |
441 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, m4, seven)); |
442 |
|
|
assertEquals(seven, aa.get(i)); |
443 |
|
|
} |
444 |
|
|
} |
445 |
|
|
|
446 |
|
|
/** |
447 |
|
|
* repeated weakCompareAndSetRelease succeeds in changing value when equal |
448 |
|
|
* to expected |
449 |
|
|
*/ |
450 |
|
|
public void testWeakCompareAndSetRelease() { |
451 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
452 |
|
|
for (int i = 0; i < SIZE; i++) { |
453 |
|
|
aa.set(i, one); |
454 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, one, two)); |
455 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, two, m4)); |
456 |
|
|
assertEquals(m4, aa.get(i)); |
457 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, m4, seven)); |
458 |
|
|
assertEquals(seven, aa.get(i)); |
459 |
|
|
} |
460 |
|
|
} |
461 |
jsr166 |
1.34 |
|
462 |
dl |
1.1 |
} |