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 |
1.10 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
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* Pat Fisher, Mike Judd. |
7 |
dl |
1.1 |
*/ |
8 |
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|
9 |
jsr166 |
1.21 |
import java.util.Arrays; |
10 |
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import java.util.concurrent.atomic.AtomicLongArray; |
11 |
dl |
1.1 |
|
12 |
jsr166 |
1.28 |
import junit.framework.Test; |
13 |
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import junit.framework.TestSuite; |
14 |
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|
15 |
dl |
1.3 |
public class AtomicLongArrayTest extends JSR166TestCase { |
16 |
jsr166 |
1.16 |
public static void main(String[] args) { |
17 |
jsr166 |
1.31 |
main(suite(), args); |
18 |
dl |
1.1 |
} |
19 |
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public static Test suite() { |
20 |
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return new TestSuite(AtomicLongArrayTest.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 zero |
25 |
dl |
1.4 |
*/ |
26 |
jsr166 |
1.12 |
public void testConstructor() { |
27 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
28 |
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for (int i = 0; i < SIZE; i++) |
29 |
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assertEquals(0, aa.get(i)); |
30 |
dl |
1.1 |
} |
31 |
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|
32 |
dl |
1.4 |
/** |
33 |
dl |
1.7 |
* constructor with null array throws NPE |
34 |
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*/ |
35 |
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public void testConstructor2NPE() { |
36 |
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try { |
37 |
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long[] a = null; |
38 |
jsr166 |
1.30 |
new AtomicLongArray(a); |
39 |
jsr166 |
1.13 |
shouldThrow(); |
40 |
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} catch (NullPointerException success) {} |
41 |
dl |
1.7 |
} |
42 |
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|
43 |
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/** |
44 |
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* constructor with array is of same size and has all elements |
45 |
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*/ |
46 |
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public void testConstructor2() { |
47 |
jsr166 |
1.22 |
long[] a = { 17L, 3L, -42L, 99L, -7L }; |
48 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(a); |
49 |
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assertEquals(a.length, aa.length()); |
50 |
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for (int i = 0; i < a.length; i++) |
51 |
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assertEquals(a[i], aa.get(i)); |
52 |
dl |
1.7 |
} |
53 |
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|
54 |
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/** |
55 |
dl |
1.5 |
* get and set for out of bound indices throw IndexOutOfBoundsException |
56 |
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*/ |
57 |
jsr166 |
1.12 |
public void testIndexing() { |
58 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
59 |
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for (int index : new int[] { -1, SIZE }) { |
60 |
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try { |
61 |
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aa.get(index); |
62 |
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shouldThrow(); |
63 |
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} catch (IndexOutOfBoundsException success) {} |
64 |
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try { |
65 |
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aa.set(index, 1); |
66 |
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shouldThrow(); |
67 |
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} catch (IndexOutOfBoundsException success) {} |
68 |
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try { |
69 |
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aa.lazySet(index, 1); |
70 |
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shouldThrow(); |
71 |
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} catch (IndexOutOfBoundsException success) {} |
72 |
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try { |
73 |
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aa.compareAndSet(index, 1, 2); |
74 |
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shouldThrow(); |
75 |
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} catch (IndexOutOfBoundsException success) {} |
76 |
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try { |
77 |
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aa.weakCompareAndSet(index, 1, 2); |
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.getAndAdd(index, 1); |
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.addAndGet(index, 1); |
86 |
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shouldThrow(); |
87 |
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} catch (IndexOutOfBoundsException success) {} |
88 |
dl |
1.33 |
try { |
89 |
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aa.getPlain(index); |
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.getOpaque(index); |
94 |
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shouldThrow(); |
95 |
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} catch (IndexOutOfBoundsException success) {} |
96 |
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try { |
97 |
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aa.getAcquire(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.setPlain(index, 1); |
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.setOpaque(index, 1); |
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.setRelease(index, 1); |
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.compareAndExchange(index, 1, 2); |
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.compareAndExchangeAcquire(index, 1, 2); |
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.compareAndExchangeRelease(index, 1, 2); |
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.weakCompareAndSetVolatile(index, 1, 2); |
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.weakCompareAndSetAcquire(index, 1, 2); |
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.weakCompareAndSetRelease(index, 1, 2); |
134 |
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shouldThrow(); |
135 |
|
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} catch (IndexOutOfBoundsException success) {} |
136 |
dl |
1.5 |
} |
137 |
|
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} |
138 |
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|
139 |
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/** |
140 |
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* get returns the last value set at index |
141 |
dl |
1.4 |
*/ |
142 |
jsr166 |
1.12 |
public void testGetSet() { |
143 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
144 |
|
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for (int i = 0; i < SIZE; i++) { |
145 |
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aa.set(i, 1); |
146 |
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assertEquals(1, aa.get(i)); |
147 |
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aa.set(i, 2); |
148 |
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assertEquals(2, aa.get(i)); |
149 |
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aa.set(i, -3); |
150 |
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assertEquals(-3, aa.get(i)); |
151 |
dl |
1.1 |
} |
152 |
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} |
153 |
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|
154 |
dl |
1.4 |
/** |
155 |
dl |
1.9 |
* get returns the last value lazySet at index by same thread |
156 |
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*/ |
157 |
jsr166 |
1.12 |
public void testGetLazySet() { |
158 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
159 |
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for (int i = 0; i < SIZE; i++) { |
160 |
|
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aa.lazySet(i, 1); |
161 |
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assertEquals(1, aa.get(i)); |
162 |
|
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aa.lazySet(i, 2); |
163 |
|
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assertEquals(2, aa.get(i)); |
164 |
|
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aa.lazySet(i, -3); |
165 |
|
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assertEquals(-3, aa.get(i)); |
166 |
dl |
1.9 |
} |
167 |
|
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} |
168 |
|
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|
169 |
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/** |
170 |
dl |
1.5 |
* compareAndSet succeeds in changing value if equal to expected else fails |
171 |
dl |
1.4 |
*/ |
172 |
jsr166 |
1.12 |
public void testCompareAndSet() { |
173 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
174 |
|
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for (int i = 0; i < SIZE; i++) { |
175 |
|
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aa.set(i, 1); |
176 |
|
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assertTrue(aa.compareAndSet(i, 1, 2)); |
177 |
|
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assertTrue(aa.compareAndSet(i, 2, -4)); |
178 |
|
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assertEquals(-4, aa.get(i)); |
179 |
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assertFalse(aa.compareAndSet(i, -5, 7)); |
180 |
|
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assertEquals(-4, aa.get(i)); |
181 |
|
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assertTrue(aa.compareAndSet(i, -4, 7)); |
182 |
|
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assertEquals(7, aa.get(i)); |
183 |
dl |
1.1 |
} |
184 |
|
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} |
185 |
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|
186 |
dl |
1.4 |
/** |
187 |
dl |
1.5 |
* compareAndSet in one thread enables another waiting for value |
188 |
|
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* to succeed |
189 |
|
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*/ |
190 |
jsr166 |
1.13 |
public void testCompareAndSetInMultipleThreads() throws InterruptedException { |
191 |
dl |
1.5 |
final AtomicLongArray a = new AtomicLongArray(1); |
192 |
|
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a.set(0, 1); |
193 |
jsr166 |
1.14 |
Thread t = new Thread(new CheckedRunnable() { |
194 |
|
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public void realRun() { |
195 |
|
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while (!a.compareAndSet(0, 2, 3)) |
196 |
|
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Thread.yield(); |
197 |
|
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}}); |
198 |
jsr166 |
1.13 |
|
199 |
|
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t.start(); |
200 |
|
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assertTrue(a.compareAndSet(0, 1, 2)); |
201 |
|
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t.join(LONG_DELAY_MS); |
202 |
|
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assertFalse(t.isAlive()); |
203 |
jsr166 |
1.24 |
assertEquals(3, a.get(0)); |
204 |
dl |
1.5 |
} |
205 |
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|
206 |
|
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/** |
207 |
|
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* repeated weakCompareAndSet succeeds in changing value when equal |
208 |
jsr166 |
1.10 |
* to expected |
209 |
dl |
1.4 |
*/ |
210 |
jsr166 |
1.12 |
public void testWeakCompareAndSet() { |
211 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
212 |
|
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for (int i = 0; i < SIZE; i++) { |
213 |
|
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aa.set(i, 1); |
214 |
jsr166 |
1.29 |
do {} while (!aa.weakCompareAndSet(i, 1, 2)); |
215 |
|
|
do {} while (!aa.weakCompareAndSet(i, 2, -4)); |
216 |
jsr166 |
1.25 |
assertEquals(-4, aa.get(i)); |
217 |
jsr166 |
1.29 |
do {} while (!aa.weakCompareAndSet(i, -4, 7)); |
218 |
jsr166 |
1.25 |
assertEquals(7, aa.get(i)); |
219 |
dl |
1.1 |
} |
220 |
|
|
} |
221 |
|
|
|
222 |
dl |
1.4 |
/** |
223 |
jsr166 |
1.18 |
* getAndSet returns previous value and sets to given value at given index |
224 |
dl |
1.4 |
*/ |
225 |
jsr166 |
1.12 |
public void testGetAndSet() { |
226 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
227 |
|
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for (int i = 0; i < SIZE; i++) { |
228 |
|
|
aa.set(i, 1); |
229 |
|
|
assertEquals(1, aa.getAndSet(i, 0)); |
230 |
|
|
assertEquals(0, aa.getAndSet(i, -10)); |
231 |
|
|
assertEquals(-10, aa.getAndSet(i, 1)); |
232 |
dl |
1.1 |
} |
233 |
|
|
} |
234 |
|
|
|
235 |
dl |
1.4 |
/** |
236 |
jsr166 |
1.18 |
* getAndAdd returns previous value and adds given value |
237 |
dl |
1.4 |
*/ |
238 |
jsr166 |
1.12 |
public void testGetAndAdd() { |
239 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
240 |
|
|
for (int i = 0; i < SIZE; i++) { |
241 |
|
|
aa.set(i, 1); |
242 |
|
|
assertEquals(1, aa.getAndAdd(i, 2)); |
243 |
|
|
assertEquals(3, aa.get(i)); |
244 |
|
|
assertEquals(3, aa.getAndAdd(i, -4)); |
245 |
|
|
assertEquals(-1, aa.get(i)); |
246 |
dl |
1.1 |
} |
247 |
|
|
} |
248 |
|
|
|
249 |
dl |
1.4 |
/** |
250 |
dl |
1.5 |
* getAndDecrement returns previous value and decrements |
251 |
dl |
1.4 |
*/ |
252 |
jsr166 |
1.12 |
public void testGetAndDecrement() { |
253 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
254 |
|
|
for (int i = 0; i < SIZE; i++) { |
255 |
|
|
aa.set(i, 1); |
256 |
|
|
assertEquals(1, aa.getAndDecrement(i)); |
257 |
|
|
assertEquals(0, aa.getAndDecrement(i)); |
258 |
|
|
assertEquals(-1, aa.getAndDecrement(i)); |
259 |
dl |
1.1 |
} |
260 |
|
|
} |
261 |
|
|
|
262 |
dl |
1.4 |
/** |
263 |
dl |
1.5 |
* getAndIncrement returns previous value and increments |
264 |
dl |
1.4 |
*/ |
265 |
jsr166 |
1.12 |
public void testGetAndIncrement() { |
266 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
267 |
|
|
for (int i = 0; i < SIZE; i++) { |
268 |
|
|
aa.set(i, 1); |
269 |
|
|
assertEquals(1, aa.getAndIncrement(i)); |
270 |
|
|
assertEquals(2, aa.get(i)); |
271 |
|
|
aa.set(i, -2); |
272 |
|
|
assertEquals(-2, aa.getAndIncrement(i)); |
273 |
|
|
assertEquals(-1, aa.getAndIncrement(i)); |
274 |
|
|
assertEquals(0, aa.getAndIncrement(i)); |
275 |
|
|
assertEquals(1, aa.get(i)); |
276 |
dl |
1.1 |
} |
277 |
|
|
} |
278 |
|
|
|
279 |
dl |
1.4 |
/** |
280 |
jsr166 |
1.18 |
* addAndGet adds given value to current, and returns current value |
281 |
dl |
1.4 |
*/ |
282 |
dl |
1.1 |
public void testAddAndGet() { |
283 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
284 |
|
|
for (int i = 0; i < SIZE; i++) { |
285 |
|
|
aa.set(i, 1); |
286 |
|
|
assertEquals(3, aa.addAndGet(i, 2)); |
287 |
|
|
assertEquals(3, aa.get(i)); |
288 |
|
|
assertEquals(-1, aa.addAndGet(i, -4)); |
289 |
|
|
assertEquals(-1, aa.get(i)); |
290 |
dl |
1.1 |
} |
291 |
|
|
} |
292 |
|
|
|
293 |
dl |
1.4 |
/** |
294 |
dl |
1.5 |
* decrementAndGet decrements and returns current value |
295 |
dl |
1.4 |
*/ |
296 |
jsr166 |
1.12 |
public void testDecrementAndGet() { |
297 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
298 |
|
|
for (int i = 0; i < SIZE; i++) { |
299 |
|
|
aa.set(i, 1); |
300 |
|
|
assertEquals(0, aa.decrementAndGet(i)); |
301 |
|
|
assertEquals(-1, aa.decrementAndGet(i)); |
302 |
|
|
assertEquals(-2, aa.decrementAndGet(i)); |
303 |
|
|
assertEquals(-2, aa.get(i)); |
304 |
dl |
1.1 |
} |
305 |
|
|
} |
306 |
|
|
|
307 |
dl |
1.4 |
/** |
308 |
dl |
1.5 |
* incrementAndGet increments and returns current value |
309 |
dl |
1.4 |
*/ |
310 |
dl |
1.1 |
public void testIncrementAndGet() { |
311 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(SIZE); |
312 |
|
|
for (int i = 0; i < SIZE; i++) { |
313 |
|
|
aa.set(i, 1); |
314 |
|
|
assertEquals(2, aa.incrementAndGet(i)); |
315 |
|
|
assertEquals(2, aa.get(i)); |
316 |
|
|
aa.set(i, -2); |
317 |
|
|
assertEquals(-1, aa.incrementAndGet(i)); |
318 |
|
|
assertEquals(0, aa.incrementAndGet(i)); |
319 |
|
|
assertEquals(1, aa.incrementAndGet(i)); |
320 |
|
|
assertEquals(1, aa.get(i)); |
321 |
dl |
1.1 |
} |
322 |
|
|
} |
323 |
dl |
1.2 |
|
324 |
jsr166 |
1.17 |
class Counter extends CheckedRunnable { |
325 |
jsr166 |
1.25 |
final AtomicLongArray aa; |
326 |
dl |
1.3 |
volatile long counts; |
327 |
jsr166 |
1.25 |
Counter(AtomicLongArray a) { aa = a; } |
328 |
jsr166 |
1.17 |
public void realRun() { |
329 |
dl |
1.3 |
for (;;) { |
330 |
|
|
boolean done = true; |
331 |
jsr166 |
1.25 |
for (int i = 0; i < aa.length(); i++) { |
332 |
|
|
long v = aa.get(i); |
333 |
jsr166 |
1.17 |
assertTrue(v >= 0); |
334 |
dl |
1.3 |
if (v != 0) { |
335 |
|
|
done = false; |
336 |
jsr166 |
1.32 |
if (aa.compareAndSet(i, v, v - 1)) |
337 |
dl |
1.3 |
++counts; |
338 |
|
|
} |
339 |
|
|
} |
340 |
|
|
if (done) |
341 |
|
|
break; |
342 |
|
|
} |
343 |
|
|
} |
344 |
|
|
} |
345 |
|
|
|
346 |
dl |
1.4 |
/** |
347 |
dl |
1.5 |
* Multiple threads using same array of counters successfully |
348 |
|
|
* update a number of times equal to total count |
349 |
dl |
1.4 |
*/ |
350 |
jsr166 |
1.13 |
public void testCountingInMultipleThreads() throws InterruptedException { |
351 |
jsr166 |
1.25 |
final AtomicLongArray aa = new AtomicLongArray(SIZE); |
352 |
jsr166 |
1.27 |
long countdown = 10000; |
353 |
jsr166 |
1.25 |
for (int i = 0; i < SIZE; i++) |
354 |
jsr166 |
1.27 |
aa.set(i, countdown); |
355 |
jsr166 |
1.25 |
Counter c1 = new Counter(aa); |
356 |
|
|
Counter c2 = new Counter(aa); |
357 |
jsr166 |
1.13 |
Thread t1 = new Thread(c1); |
358 |
|
|
Thread t2 = new Thread(c2); |
359 |
|
|
t1.start(); |
360 |
|
|
t2.start(); |
361 |
|
|
t1.join(); |
362 |
|
|
t2.join(); |
363 |
jsr166 |
1.27 |
assertEquals(c1.counts+c2.counts, SIZE * countdown); |
364 |
dl |
1.3 |
} |
365 |
|
|
|
366 |
dl |
1.4 |
/** |
367 |
dl |
1.5 |
* a deserialized serialized array holds same values |
368 |
dl |
1.4 |
*/ |
369 |
jsr166 |
1.13 |
public void testSerialization() throws Exception { |
370 |
jsr166 |
1.21 |
AtomicLongArray x = new AtomicLongArray(SIZE); |
371 |
jsr166 |
1.25 |
for (int i = 0; i < SIZE; i++) |
372 |
jsr166 |
1.21 |
x.set(i, -i); |
373 |
|
|
AtomicLongArray y = serialClone(x); |
374 |
jsr166 |
1.26 |
assertNotSame(x, y); |
375 |
jsr166 |
1.21 |
assertEquals(x.length(), y.length()); |
376 |
jsr166 |
1.25 |
for (int i = 0; i < SIZE; i++) { |
377 |
jsr166 |
1.21 |
assertEquals(x.get(i), y.get(i)); |
378 |
dl |
1.2 |
} |
379 |
dl |
1.8 |
} |
380 |
|
|
|
381 |
|
|
/** |
382 |
|
|
* toString returns current value. |
383 |
jsr166 |
1.10 |
*/ |
384 |
dl |
1.8 |
public void testToString() { |
385 |
jsr166 |
1.22 |
long[] a = { 17, 3, -42, 99, -7 }; |
386 |
jsr166 |
1.25 |
AtomicLongArray aa = new AtomicLongArray(a); |
387 |
|
|
assertEquals(Arrays.toString(a), aa.toString()); |
388 |
dl |
1.2 |
} |
389 |
|
|
|
390 |
dl |
1.33 |
// jdk9 |
391 |
jsr166 |
1.34 |
|
392 |
dl |
1.33 |
/** |
393 |
|
|
* getPlain returns the last value set |
394 |
|
|
*/ |
395 |
|
|
public void testGetPlainSet() { |
396 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
397 |
|
|
for (int i = 0; i < SIZE; i++) { |
398 |
|
|
aa.set(i, 1); |
399 |
|
|
assertEquals(1, aa.getPlain(i)); |
400 |
|
|
aa.set(i, 2); |
401 |
|
|
assertEquals(2, aa.getPlain(i)); |
402 |
|
|
aa.set(i, -3); |
403 |
|
|
assertEquals(-3, aa.getPlain(i)); |
404 |
|
|
} |
405 |
|
|
} |
406 |
|
|
|
407 |
|
|
/** |
408 |
|
|
* getOpaque returns the last value set |
409 |
|
|
*/ |
410 |
|
|
public void testGetOpaqueSet() { |
411 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
412 |
|
|
for (int i = 0; i < SIZE; i++) { |
413 |
|
|
aa.set(i, 1); |
414 |
|
|
assertEquals(1, aa.getOpaque(i)); |
415 |
|
|
aa.set(i, 2); |
416 |
|
|
assertEquals(2, aa.getOpaque(i)); |
417 |
|
|
aa.set(i, -3); |
418 |
|
|
assertEquals(-3, aa.getOpaque(i)); |
419 |
|
|
} |
420 |
|
|
} |
421 |
|
|
|
422 |
|
|
/** |
423 |
|
|
* getAcquire returns the last value set |
424 |
|
|
*/ |
425 |
|
|
public void testGetAcquireSet() { |
426 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
427 |
|
|
for (int i = 0; i < SIZE; i++) { |
428 |
|
|
aa.set(i, 1); |
429 |
|
|
assertEquals(1, aa.getAcquire(i)); |
430 |
|
|
aa.set(i, 2); |
431 |
|
|
assertEquals(2, aa.getAcquire(i)); |
432 |
|
|
aa.set(i, -3); |
433 |
|
|
assertEquals(-3, aa.getAcquire(i)); |
434 |
|
|
} |
435 |
|
|
} |
436 |
|
|
|
437 |
|
|
/** |
438 |
|
|
* get returns the last value setPlain |
439 |
|
|
*/ |
440 |
|
|
public void testGetSetPlain() { |
441 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
442 |
|
|
for (int i = 0; i < SIZE; i++) { |
443 |
|
|
aa.setPlain(i, 1); |
444 |
|
|
assertEquals(1, aa.get(i)); |
445 |
|
|
aa.setPlain(i, 2); |
446 |
|
|
assertEquals(2, aa.get(i)); |
447 |
|
|
aa.setPlain(i, -3); |
448 |
|
|
assertEquals(-3, aa.get(i)); |
449 |
|
|
} |
450 |
|
|
} |
451 |
|
|
|
452 |
|
|
/** |
453 |
|
|
* get returns the last value setOpaque |
454 |
|
|
*/ |
455 |
|
|
public void testGetSetOpaque() { |
456 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
457 |
|
|
for (int i = 0; i < SIZE; i++) { |
458 |
|
|
aa.setOpaque(i, 1); |
459 |
|
|
assertEquals(1, aa.get(i)); |
460 |
|
|
aa.setOpaque(i, 2); |
461 |
|
|
assertEquals(2, aa.get(i)); |
462 |
|
|
aa.setOpaque(i, -3); |
463 |
|
|
assertEquals(-3, aa.get(i)); |
464 |
|
|
} |
465 |
|
|
} |
466 |
|
|
|
467 |
|
|
/** |
468 |
|
|
* get returns the last value setRelease |
469 |
|
|
*/ |
470 |
|
|
public void testGetSetRelease() { |
471 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
472 |
|
|
for (int i = 0; i < SIZE; i++) { |
473 |
|
|
aa.setRelease(i, 1); |
474 |
|
|
assertEquals(1, aa.get(i)); |
475 |
|
|
aa.setRelease(i, 2); |
476 |
|
|
assertEquals(2, aa.get(i)); |
477 |
|
|
aa.setRelease(i, -3); |
478 |
|
|
assertEquals(-3, aa.get(i)); |
479 |
|
|
} |
480 |
|
|
} |
481 |
|
|
|
482 |
|
|
/** |
483 |
|
|
* compareAndExchange succeeds in changing value if equal to |
484 |
|
|
* expected else fails |
485 |
|
|
*/ |
486 |
|
|
public void testCompareAndExchange() { |
487 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
488 |
|
|
for (int i = 0; i < SIZE; i++) { |
489 |
|
|
aa.set(i, 1); |
490 |
|
|
assertEquals(1, aa.compareAndExchange(i, 1, 2)); |
491 |
|
|
assertEquals(2, aa.compareAndExchange(i, 2, -4)); |
492 |
|
|
assertEquals(-4, aa.get(i)); |
493 |
|
|
assertEquals(-4, aa.compareAndExchange(i,-5, 7)); |
494 |
|
|
assertEquals(-4, aa.get(i)); |
495 |
|
|
assertEquals(-4, aa.compareAndExchange(i, -4, 7)); |
496 |
|
|
assertEquals(7, aa.get(i)); |
497 |
|
|
} |
498 |
|
|
} |
499 |
|
|
|
500 |
|
|
/** |
501 |
|
|
* compareAndExchangeAcquire succeeds in changing value if equal to |
502 |
|
|
* expected else fails |
503 |
|
|
*/ |
504 |
|
|
public void testCompareAndExchangeAcquire() { |
505 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
506 |
|
|
for (int i = 0; i < SIZE; i++) { |
507 |
|
|
aa.set(i, 1); |
508 |
|
|
assertEquals(1, aa.compareAndExchangeAcquire(i, 1, 2)); |
509 |
|
|
assertEquals(2, aa.compareAndExchangeAcquire(i, 2, -4)); |
510 |
|
|
assertEquals(-4, aa.get(i)); |
511 |
|
|
assertEquals(-4, aa.compareAndExchangeAcquire(i,-5, 7)); |
512 |
|
|
assertEquals(-4, aa.get(i)); |
513 |
|
|
assertEquals(-4, aa.compareAndExchangeAcquire(i, -4, 7)); |
514 |
|
|
assertEquals(7, aa.get(i)); |
515 |
|
|
} |
516 |
|
|
} |
517 |
|
|
|
518 |
|
|
/** |
519 |
|
|
* compareAndExchangeRelease succeeds in changing value if equal to |
520 |
|
|
* expected else fails |
521 |
|
|
*/ |
522 |
|
|
public void testCompareAndExchangeRelease() { |
523 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
524 |
|
|
for (int i = 0; i < SIZE; i++) { |
525 |
|
|
aa.set(i, 1); |
526 |
|
|
assertEquals(1, aa.compareAndExchangeRelease(i, 1, 2)); |
527 |
|
|
assertEquals(2, aa.compareAndExchangeRelease(i, 2, -4)); |
528 |
|
|
assertEquals(-4, aa.get(i)); |
529 |
|
|
assertEquals(-4, aa.compareAndExchangeRelease(i,-5, 7)); |
530 |
|
|
assertEquals(-4, aa.get(i)); |
531 |
|
|
assertEquals(-4, aa.compareAndExchangeRelease(i, -4, 7)); |
532 |
|
|
assertEquals(7, aa.get(i)); |
533 |
|
|
} |
534 |
|
|
} |
535 |
|
|
|
536 |
|
|
/** |
537 |
|
|
* repeated weakCompareAndSetVolatile succeeds in changing value when equal |
538 |
|
|
* to expected |
539 |
|
|
*/ |
540 |
|
|
public void testWeakCompareAndSetVolatile() { |
541 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
542 |
|
|
for (int i = 0; i < SIZE; i++) { |
543 |
|
|
aa.set(i, 1); |
544 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, 1, 2)); |
545 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, 2, -4)); |
546 |
|
|
assertEquals(-4, aa.get(i)); |
547 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, -4, 7)); |
548 |
|
|
assertEquals(7, aa.get(i)); |
549 |
|
|
} |
550 |
|
|
} |
551 |
|
|
|
552 |
|
|
/** |
553 |
|
|
* repeated weakCompareAndSetAcquire succeeds in changing value when equal |
554 |
|
|
* to expected |
555 |
|
|
*/ |
556 |
|
|
public void testWeakCompareAndSetAcquire() { |
557 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
558 |
|
|
for (int i = 0; i < SIZE; i++) { |
559 |
|
|
aa.set(i, 1); |
560 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, 1, 2)); |
561 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, 2, -4)); |
562 |
|
|
assertEquals(-4, aa.get(i)); |
563 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, -4, 7)); |
564 |
|
|
assertEquals(7, aa.get(i)); |
565 |
|
|
} |
566 |
|
|
} |
567 |
|
|
|
568 |
|
|
/** |
569 |
|
|
* repeated weakCompareAndSetRelease succeeds in changing value when equal |
570 |
|
|
* to expected |
571 |
|
|
*/ |
572 |
|
|
public void testWeakCompareAndSetRelease() { |
573 |
|
|
AtomicLongArray aa = new AtomicLongArray(SIZE); |
574 |
|
|
for (int i = 0; i < SIZE; i++) { |
575 |
|
|
aa.set(i, 1); |
576 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, 1, 2)); |
577 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, 2, -4)); |
578 |
|
|
assertEquals(-4, aa.get(i)); |
579 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, -4, 7)); |
580 |
|
|
assertEquals(7, aa.get(i)); |
581 |
|
|
} |
582 |
|
|
} |
583 |
jsr166 |
1.34 |
|
584 |
dl |
1.1 |
} |