| 1 |
jsr166 |
1.1 |
/* |
| 2 |
|
|
* Written by Doug Lea with assistance from members of JCP JSR-166 |
| 3 |
|
|
* Expert Group and released to the public domain, as explained at |
| 4 |
|
|
* http://creativecommons.org/publicdomain/zero/1.0/ |
| 5 |
|
|
*/ |
| 6 |
|
|
|
| 7 |
|
|
import java.util.concurrent.atomic.AtomicReferenceArray; |
| 8 |
|
|
|
| 9 |
|
|
import junit.framework.Test; |
| 10 |
|
|
import junit.framework.TestSuite; |
| 11 |
|
|
|
| 12 |
|
|
public class AtomicReferenceArray9Test extends JSR166TestCase { |
| 13 |
|
|
public static void main(String[] args) { |
| 14 |
|
|
main(suite(), args); |
| 15 |
|
|
} |
| 16 |
|
|
public static Test suite() { |
| 17 |
|
|
return new TestSuite(AtomicReferenceArray9Test.class); |
| 18 |
|
|
} |
| 19 |
|
|
|
| 20 |
|
|
/** |
| 21 |
|
|
* get and set for out of bound indices throw IndexOutOfBoundsException |
| 22 |
|
|
*/ |
| 23 |
|
|
public void testIndexing() { |
| 24 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 25 |
|
|
for (int index : new int[] { -1, SIZE }) { |
| 26 |
|
|
final int j = index; |
| 27 |
|
|
final Runnable[] tasks = { |
| 28 |
|
|
() -> aa.getPlain(j), |
| 29 |
|
|
() -> aa.getOpaque(j), |
| 30 |
|
|
() -> aa.getAcquire(j), |
| 31 |
|
|
() -> aa.setPlain(j, null), |
| 32 |
|
|
() -> aa.setOpaque(j, null), |
| 33 |
|
|
() -> aa.setRelease(j, null), |
| 34 |
|
|
() -> aa.compareAndExchange(j, null, null), |
| 35 |
|
|
() -> aa.compareAndExchangeAcquire(j, null, null), |
| 36 |
|
|
() -> aa.compareAndExchangeRelease(j, null, null), |
| 37 |
|
|
() -> aa.weakCompareAndSetVolatile(j, null, null), |
| 38 |
|
|
() -> aa.weakCompareAndSetAcquire(j, null, null), |
| 39 |
|
|
() -> aa.weakCompareAndSetRelease(j, null, null), |
| 40 |
|
|
}; |
| 41 |
|
|
|
| 42 |
|
|
assertThrows(IndexOutOfBoundsException.class, tasks); |
| 43 |
|
|
} |
| 44 |
|
|
} |
| 45 |
|
|
|
| 46 |
|
|
/** |
| 47 |
|
|
* getPlain returns the last value set |
| 48 |
|
|
*/ |
| 49 |
|
|
public void testGetPlainSet() { |
| 50 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 51 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 52 |
|
|
aa.set(i, one); |
| 53 |
|
|
assertEquals(one, aa.getPlain(i)); |
| 54 |
|
|
aa.set(i, two); |
| 55 |
|
|
assertEquals(two, aa.getPlain(i)); |
| 56 |
|
|
aa.set(i, m3); |
| 57 |
|
|
assertEquals(m3, aa.getPlain(i)); |
| 58 |
|
|
} |
| 59 |
|
|
} |
| 60 |
|
|
|
| 61 |
|
|
/** |
| 62 |
|
|
* getOpaque returns the last value set |
| 63 |
|
|
*/ |
| 64 |
|
|
public void testGetOpaqueSet() { |
| 65 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 66 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 67 |
|
|
aa.set(i, one); |
| 68 |
|
|
assertEquals(one, aa.getOpaque(i)); |
| 69 |
|
|
aa.set(i, two); |
| 70 |
|
|
assertEquals(two, aa.getOpaque(i)); |
| 71 |
|
|
aa.set(i, m3); |
| 72 |
|
|
assertEquals(m3, aa.getOpaque(i)); |
| 73 |
|
|
} |
| 74 |
|
|
} |
| 75 |
|
|
|
| 76 |
|
|
/** |
| 77 |
|
|
* getAcquire returns the last value set |
| 78 |
|
|
*/ |
| 79 |
|
|
public void testGetAcquireSet() { |
| 80 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 81 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 82 |
|
|
aa.set(i, one); |
| 83 |
|
|
assertEquals(one, aa.getAcquire(i)); |
| 84 |
|
|
aa.set(i, two); |
| 85 |
|
|
assertEquals(two, aa.getAcquire(i)); |
| 86 |
|
|
aa.set(i, m3); |
| 87 |
|
|
assertEquals(m3, aa.getAcquire(i)); |
| 88 |
|
|
} |
| 89 |
|
|
} |
| 90 |
|
|
|
| 91 |
|
|
/** |
| 92 |
|
|
* get returns the last value setPlain |
| 93 |
|
|
*/ |
| 94 |
|
|
public void testGetSetPlain() { |
| 95 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 96 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 97 |
|
|
aa.setPlain(i, one); |
| 98 |
|
|
assertEquals(one, aa.get(i)); |
| 99 |
|
|
aa.setPlain(i, two); |
| 100 |
|
|
assertEquals(two, aa.get(i)); |
| 101 |
|
|
aa.setPlain(i, m3); |
| 102 |
|
|
assertEquals(m3, aa.get(i)); |
| 103 |
|
|
} |
| 104 |
|
|
} |
| 105 |
|
|
|
| 106 |
|
|
/** |
| 107 |
|
|
* get returns the last value setOpaque |
| 108 |
|
|
*/ |
| 109 |
|
|
public void testGetSetOpaque() { |
| 110 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 111 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 112 |
|
|
aa.setOpaque(i, one); |
| 113 |
|
|
assertEquals(one, aa.get(i)); |
| 114 |
|
|
aa.setOpaque(i, two); |
| 115 |
|
|
assertEquals(two, aa.get(i)); |
| 116 |
|
|
aa.setOpaque(i, m3); |
| 117 |
|
|
assertEquals(m3, aa.get(i)); |
| 118 |
|
|
} |
| 119 |
|
|
} |
| 120 |
|
|
|
| 121 |
|
|
/** |
| 122 |
|
|
* get returns the last value setRelease |
| 123 |
|
|
*/ |
| 124 |
|
|
public void testGetSetRelease() { |
| 125 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 126 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 127 |
|
|
aa.setRelease(i, one); |
| 128 |
|
|
assertEquals(one, aa.get(i)); |
| 129 |
|
|
aa.setRelease(i, two); |
| 130 |
|
|
assertEquals(two, aa.get(i)); |
| 131 |
|
|
aa.setRelease(i, m3); |
| 132 |
|
|
assertEquals(m3, aa.get(i)); |
| 133 |
|
|
} |
| 134 |
|
|
} |
| 135 |
|
|
|
| 136 |
|
|
/** |
| 137 |
|
|
* compareAndExchange succeeds in changing value if equal to |
| 138 |
|
|
* expected else fails |
| 139 |
|
|
*/ |
| 140 |
|
|
public void testCompareAndExchange() { |
| 141 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 142 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 143 |
|
|
aa.set(i, one); |
| 144 |
|
|
assertEquals(one, aa.compareAndExchange(i, one, two)); |
| 145 |
|
|
assertEquals(two, aa.compareAndExchange(i, two, m4)); |
| 146 |
|
|
assertEquals(m4, aa.get(i)); |
| 147 |
|
|
assertEquals(m4, aa.compareAndExchange(i,m5, seven)); |
| 148 |
|
|
assertEquals(m4, aa.get(i)); |
| 149 |
|
|
assertEquals(m4, aa.compareAndExchange(i, m4, seven)); |
| 150 |
|
|
assertEquals(seven, aa.get(i)); |
| 151 |
|
|
} |
| 152 |
|
|
} |
| 153 |
|
|
|
| 154 |
|
|
/** |
| 155 |
|
|
* compareAndExchangeAcquire succeeds in changing value if equal to |
| 156 |
|
|
* expected else fails |
| 157 |
|
|
*/ |
| 158 |
|
|
public void testCompareAndExchangeAcquire() { |
| 159 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 160 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 161 |
|
|
aa.set(i, one); |
| 162 |
|
|
assertEquals(one, aa.compareAndExchangeAcquire(i, one, two)); |
| 163 |
|
|
assertEquals(two, aa.compareAndExchangeAcquire(i, two, m4)); |
| 164 |
|
|
assertEquals(m4, aa.get(i)); |
| 165 |
|
|
assertEquals(m4, aa.compareAndExchangeAcquire(i,m5, seven)); |
| 166 |
|
|
assertEquals(m4, aa.get(i)); |
| 167 |
|
|
assertEquals(m4, aa.compareAndExchangeAcquire(i, m4, seven)); |
| 168 |
|
|
assertEquals(seven, aa.get(i)); |
| 169 |
|
|
} |
| 170 |
|
|
} |
| 171 |
|
|
|
| 172 |
|
|
/** |
| 173 |
|
|
* compareAndExchangeRelease succeeds in changing value if equal to |
| 174 |
|
|
* expected else fails |
| 175 |
|
|
*/ |
| 176 |
|
|
public void testCompareAndExchangeRelease() { |
| 177 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 178 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 179 |
|
|
aa.set(i, one); |
| 180 |
|
|
assertEquals(one, aa.compareAndExchangeRelease(i, one, two)); |
| 181 |
|
|
assertEquals(two, aa.compareAndExchangeRelease(i, two, m4)); |
| 182 |
|
|
assertEquals(m4, aa.get(i)); |
| 183 |
|
|
assertEquals(m4, aa.compareAndExchangeRelease(i,m5, seven)); |
| 184 |
|
|
assertEquals(m4, aa.get(i)); |
| 185 |
|
|
assertEquals(m4, aa.compareAndExchangeRelease(i, m4, seven)); |
| 186 |
|
|
assertEquals(seven, aa.get(i)); |
| 187 |
|
|
} |
| 188 |
|
|
} |
| 189 |
|
|
|
| 190 |
|
|
/** |
| 191 |
|
|
* repeated weakCompareAndSetVolatile succeeds in changing value when equal |
| 192 |
|
|
* to expected |
| 193 |
|
|
*/ |
| 194 |
|
|
public void testWeakCompareAndSetVolatile() { |
| 195 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 196 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 197 |
|
|
aa.set(i, one); |
| 198 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, one, two)); |
| 199 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, two, m4)); |
| 200 |
|
|
assertEquals(m4, aa.get(i)); |
| 201 |
|
|
do {} while (!aa.weakCompareAndSetVolatile(i, m4, seven)); |
| 202 |
|
|
assertEquals(seven, aa.get(i)); |
| 203 |
|
|
} |
| 204 |
|
|
} |
| 205 |
|
|
|
| 206 |
|
|
/** |
| 207 |
|
|
* repeated weakCompareAndSetAcquire succeeds in changing value when equal |
| 208 |
|
|
* to expected |
| 209 |
|
|
*/ |
| 210 |
|
|
public void testWeakCompareAndSetAcquire() { |
| 211 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 212 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 213 |
|
|
aa.set(i, one); |
| 214 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, one, two)); |
| 215 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, two, m4)); |
| 216 |
|
|
assertEquals(m4, aa.get(i)); |
| 217 |
|
|
do {} while (!aa.weakCompareAndSetAcquire(i, m4, seven)); |
| 218 |
|
|
assertEquals(seven, aa.get(i)); |
| 219 |
|
|
} |
| 220 |
|
|
} |
| 221 |
|
|
|
| 222 |
|
|
/** |
| 223 |
|
|
* repeated weakCompareAndSetRelease succeeds in changing value when equal |
| 224 |
|
|
* to expected |
| 225 |
|
|
*/ |
| 226 |
|
|
public void testWeakCompareAndSetRelease() { |
| 227 |
|
|
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
| 228 |
|
|
for (int i = 0; i < SIZE; i++) { |
| 229 |
|
|
aa.set(i, one); |
| 230 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, one, two)); |
| 231 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, two, m4)); |
| 232 |
|
|
assertEquals(m4, aa.get(i)); |
| 233 |
|
|
do {} while (!aa.weakCompareAndSetRelease(i, m4, seven)); |
| 234 |
|
|
assertEquals(seven, aa.get(i)); |
| 235 |
|
|
} |
| 236 |
|
|
} |
| 237 |
|
|
|
| 238 |
|
|
} |
