6 |
|
* Pat Fisher, Mike Judd. |
7 |
|
*/ |
8 |
|
|
9 |
– |
import junit.framework.*; |
9 |
|
import java.util.Arrays; |
10 |
|
import java.util.concurrent.atomic.AtomicReferenceArray; |
11 |
|
|
12 |
+ |
import junit.framework.Test; |
13 |
+ |
import junit.framework.TestSuite; |
14 |
+ |
|
15 |
|
public class AtomicReferenceArrayTest extends JSR166TestCase { |
16 |
|
public static void main(String[] args) { |
17 |
< |
junit.textui.TestRunner.run(suite()); |
17 |
> |
main(suite(), args); |
18 |
|
} |
19 |
|
public static Test suite() { |
20 |
|
return new TestSuite(AtomicReferenceArrayTest.class); |
24 |
|
* constructor creates array of given size with all elements null |
25 |
|
*/ |
26 |
|
public void testConstructor() { |
27 |
< |
AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(SIZE); |
28 |
< |
for (int i = 0; i < SIZE; ++i) { |
29 |
< |
assertNull(ai.get(i)); |
27 |
> |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
28 |
> |
for (int i = 0; i < SIZE; i++) { |
29 |
> |
assertNull(aa.get(i)); |
30 |
|
} |
31 |
|
} |
32 |
|
|
36 |
|
public void testConstructor2NPE() { |
37 |
|
try { |
38 |
|
Integer[] a = null; |
39 |
< |
AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(a); |
39 |
> |
new AtomicReferenceArray<Integer>(a); |
40 |
|
shouldThrow(); |
41 |
|
} catch (NullPointerException success) {} |
42 |
|
} |
46 |
|
*/ |
47 |
|
public void testConstructor2() { |
48 |
|
Integer[] a = { two, one, three, four, seven }; |
49 |
< |
AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(a); |
50 |
< |
assertEquals(a.length, ai.length()); |
51 |
< |
for (int i = 0; i < a.length; ++i) |
52 |
< |
assertEquals(a[i], ai.get(i)); |
49 |
> |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a); |
50 |
> |
assertEquals(a.length, aa.length()); |
51 |
> |
for (int i = 0; i < a.length; i++) |
52 |
> |
assertEquals(a[i], aa.get(i)); |
53 |
|
} |
54 |
|
|
55 |
|
/** |
56 |
< |
* Initialize AtomicReference<Class> with SubClass[] |
56 |
> |
* Initialize AtomicReferenceArray<Class> with SubClass[] |
57 |
|
*/ |
58 |
|
public void testConstructorSubClassArray() { |
59 |
|
Integer[] a = { two, one, three, four, seven }; |
60 |
|
AtomicReferenceArray<Number> aa = new AtomicReferenceArray<Number>(a); |
61 |
|
assertEquals(a.length, aa.length()); |
62 |
< |
for (int i = 0; i < a.length; ++i) { |
62 |
> |
for (int i = 0; i < a.length; i++) { |
63 |
|
assertSame(a[i], aa.get(i)); |
64 |
|
Long x = Long.valueOf(i); |
65 |
|
aa.set(i, x); |
71 |
|
* get and set for out of bound indices throw IndexOutOfBoundsException |
72 |
|
*/ |
73 |
|
public void testIndexing() { |
74 |
< |
AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(SIZE); |
75 |
< |
try { |
76 |
< |
ai.get(SIZE); |
77 |
< |
shouldThrow(); |
78 |
< |
} catch (IndexOutOfBoundsException success) { |
79 |
< |
} |
80 |
< |
try { |
81 |
< |
ai.get(-1); |
82 |
< |
shouldThrow(); |
83 |
< |
} catch (IndexOutOfBoundsException success) { |
84 |
< |
} |
85 |
< |
try { |
86 |
< |
ai.set(SIZE, null); |
87 |
< |
shouldThrow(); |
88 |
< |
} catch (IndexOutOfBoundsException success) { |
89 |
< |
} |
90 |
< |
try { |
91 |
< |
ai.set(-1, null); |
92 |
< |
shouldThrow(); |
93 |
< |
} catch (IndexOutOfBoundsException success) { |
74 |
> |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(SIZE); |
75 |
> |
for (int index : new int[] { -1, SIZE }) { |
76 |
> |
try { |
77 |
> |
aa.get(index); |
78 |
> |
shouldThrow(); |
79 |
> |
} catch (IndexOutOfBoundsException success) {} |
80 |
> |
try { |
81 |
> |
aa.set(index, null); |
82 |
> |
shouldThrow(); |
83 |
> |
} catch (IndexOutOfBoundsException success) {} |
84 |
> |
try { |
85 |
> |
aa.lazySet(index, null); |
86 |
> |
shouldThrow(); |
87 |
> |
} catch (IndexOutOfBoundsException success) {} |
88 |
> |
try { |
89 |
> |
aa.compareAndSet(index, null, null); |
90 |
> |
shouldThrow(); |
91 |
> |
} catch (IndexOutOfBoundsException success) {} |
92 |
> |
try { |
93 |
> |
aa.weakCompareAndSet(index, null, null); |
94 |
> |
shouldThrow(); |
95 |
> |
} catch (IndexOutOfBoundsException success) {} |
96 |
> |
try { |
97 |
> |
aa.getPlain(index); |
98 |
> |
shouldThrow(); |
99 |
> |
} catch (IndexOutOfBoundsException success) {} |
100 |
> |
try { |
101 |
> |
aa.getOpaque(index); |
102 |
> |
shouldThrow(); |
103 |
> |
} catch (IndexOutOfBoundsException success) {} |
104 |
> |
try { |
105 |
> |
aa.getAcquire(index); |
106 |
> |
shouldThrow(); |
107 |
> |
} catch (IndexOutOfBoundsException success) {} |
108 |
> |
try { |
109 |
> |
aa.setPlain(index, null); |
110 |
> |
shouldThrow(); |
111 |
> |
} catch (IndexOutOfBoundsException success) {} |
112 |
> |
try { |
113 |
> |
aa.setOpaque(index, null); |
114 |
> |
shouldThrow(); |
115 |
> |
} catch (IndexOutOfBoundsException success) {} |
116 |
> |
try { |
117 |
> |
aa.setRelease(index, null); |
118 |
> |
shouldThrow(); |
119 |
> |
} catch (IndexOutOfBoundsException success) {} |
120 |
> |
try { |
121 |
> |
aa.compareAndExchange(index, null, null); |
122 |
> |
shouldThrow(); |
123 |
> |
} catch (IndexOutOfBoundsException success) {} |
124 |
> |
try { |
125 |
> |
aa.compareAndExchangeAcquire(index, null, null); |
126 |
> |
shouldThrow(); |
127 |
> |
} catch (IndexOutOfBoundsException success) {} |
128 |
> |
try { |
129 |
> |
aa.compareAndExchangeRelease(index, null, null); |
130 |
> |
shouldThrow(); |
131 |
> |
} catch (IndexOutOfBoundsException success) {} |
132 |
> |
try { |
133 |
> |
aa.weakCompareAndSetVolatile(index, null, null); |
134 |
> |
shouldThrow(); |
135 |
> |
} catch (IndexOutOfBoundsException success) {} |
136 |
> |
try { |
137 |
> |
aa.weakCompareAndSetAcquire(index, null, null); |
138 |
> |
shouldThrow(); |
139 |
> |
} catch (IndexOutOfBoundsException success) {} |
140 |
> |
try { |
141 |
> |
aa.weakCompareAndSetRelease(index, null, null); |
142 |
> |
shouldThrow(); |
143 |
> |
} catch (IndexOutOfBoundsException success) {} |
144 |
|
} |
145 |
|
} |
146 |
|
|
148 |
|
* get returns the last value set at index |
149 |
|
*/ |
150 |
|
public void testGetSet() { |
151 |
< |
AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); |
152 |
< |
for (int i = 0; i < SIZE; ++i) { |
153 |
< |
ai.set(i, one); |
154 |
< |
assertSame(one, ai.get(i)); |
155 |
< |
ai.set(i, two); |
156 |
< |
assertSame(two, ai.get(i)); |
157 |
< |
ai.set(i, m3); |
158 |
< |
assertSame(m3, ai.get(i)); |
151 |
> |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
152 |
> |
for (int i = 0; i < SIZE; i++) { |
153 |
> |
aa.set(i, one); |
154 |
> |
assertSame(one, aa.get(i)); |
155 |
> |
aa.set(i, two); |
156 |
> |
assertSame(two, aa.get(i)); |
157 |
> |
aa.set(i, m3); |
158 |
> |
assertSame(m3, aa.get(i)); |
159 |
|
} |
160 |
|
} |
161 |
|
|
163 |
|
* get returns the last value lazySet at index by same thread |
164 |
|
*/ |
165 |
|
public void testGetLazySet() { |
166 |
< |
AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); |
167 |
< |
for (int i = 0; i < SIZE; ++i) { |
168 |
< |
ai.lazySet(i, one); |
169 |
< |
assertSame(one, ai.get(i)); |
170 |
< |
ai.lazySet(i, two); |
171 |
< |
assertSame(two, ai.get(i)); |
172 |
< |
ai.lazySet(i, m3); |
173 |
< |
assertSame(m3, ai.get(i)); |
166 |
> |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
167 |
> |
for (int i = 0; i < SIZE; i++) { |
168 |
> |
aa.lazySet(i, one); |
169 |
> |
assertSame(one, aa.get(i)); |
170 |
> |
aa.lazySet(i, two); |
171 |
> |
assertSame(two, aa.get(i)); |
172 |
> |
aa.lazySet(i, m3); |
173 |
> |
assertSame(m3, aa.get(i)); |
174 |
|
} |
175 |
|
} |
176 |
|
|
178 |
|
* compareAndSet succeeds in changing value if equal to expected else fails |
179 |
|
*/ |
180 |
|
public void testCompareAndSet() { |
181 |
< |
AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); |
182 |
< |
for (int i = 0; i < SIZE; ++i) { |
183 |
< |
ai.set(i, one); |
184 |
< |
assertTrue(ai.compareAndSet(i, one, two)); |
185 |
< |
assertTrue(ai.compareAndSet(i, two, m4)); |
186 |
< |
assertSame(m4, ai.get(i)); |
187 |
< |
assertFalse(ai.compareAndSet(i, m5, seven)); |
188 |
< |
assertSame(m4, ai.get(i)); |
189 |
< |
assertTrue(ai.compareAndSet(i, m4, seven)); |
190 |
< |
assertSame(seven, ai.get(i)); |
181 |
> |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
182 |
> |
for (int i = 0; i < SIZE; i++) { |
183 |
> |
aa.set(i, one); |
184 |
> |
assertTrue(aa.compareAndSet(i, one, two)); |
185 |
> |
assertTrue(aa.compareAndSet(i, two, m4)); |
186 |
> |
assertSame(m4, aa.get(i)); |
187 |
> |
assertFalse(aa.compareAndSet(i, m5, seven)); |
188 |
> |
assertSame(m4, aa.get(i)); |
189 |
> |
assertTrue(aa.compareAndSet(i, m4, seven)); |
190 |
> |
assertSame(seven, aa.get(i)); |
191 |
|
} |
192 |
|
} |
193 |
|
|
216 |
|
* to expected |
217 |
|
*/ |
218 |
|
public void testWeakCompareAndSet() { |
219 |
< |
AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); |
220 |
< |
for (int i = 0; i < SIZE; ++i) { |
221 |
< |
ai.set(i, one); |
222 |
< |
while (!ai.weakCompareAndSet(i, one, two)); |
223 |
< |
while (!ai.weakCompareAndSet(i, two, m4)); |
224 |
< |
assertSame(m4, ai.get(i)); |
225 |
< |
while (!ai.weakCompareAndSet(i, m4, seven)); |
226 |
< |
assertSame(seven, ai.get(i)); |
219 |
> |
AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); |
220 |
> |
for (int i = 0; i < SIZE; i++) { |
221 |
> |
aa.set(i, one); |
222 |
> |
do {} while (!aa.weakCompareAndSet(i, one, two)); |
223 |
> |
do {} while (!aa.weakCompareAndSet(i, two, m4)); |
224 |
> |
assertSame(m4, aa.get(i)); |
225 |
> |
do {} while (!aa.weakCompareAndSet(i, m4, seven)); |
226 |
> |
assertSame(seven, aa.get(i)); |
227 |
|
} |
228 |
|
} |
229 |
|
|
231 |
|
* getAndSet returns previous value and sets to given value at given index |
232 |
|
*/ |
233 |
|
public void testGetAndSet() { |
234 |
< |
AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); |
235 |
< |
for (int i = 0; i < SIZE; ++i) { |
236 |
< |
ai.set(i, one); |
237 |
< |
assertSame(one, ai.getAndSet(i, zero)); |
238 |
< |
assertSame(zero, ai.getAndSet(i, m10)); |
239 |
< |
assertSame(m10, ai.getAndSet(i, one)); |
234 |
> |
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 |
|
} |
241 |
|
} |
242 |
|
|
249 |
|
x.set(i, new Integer(-i)); |
250 |
|
} |
251 |
|
AtomicReferenceArray y = serialClone(x); |
252 |
< |
assertTrue(x != y); |
252 |
> |
assertNotSame(x, y); |
253 |
|
assertEquals(x.length(), y.length()); |
254 |
|
for (int i = 0; i < SIZE; i++) { |
255 |
|
assertEquals(x.get(i), y.get(i)); |
261 |
|
*/ |
262 |
|
public void testToString() { |
263 |
|
Integer[] a = { two, one, three, four, seven }; |
264 |
< |
AtomicReferenceArray<Integer> ai = new AtomicReferenceArray<Integer>(a); |
265 |
< |
assertEquals(Arrays.toString(a), ai.toString()); |
264 |
> |
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<Integer>(a); |
265 |
> |
assertEquals(Arrays.toString(a), aa.toString()); |
266 |
> |
} |
267 |
> |
|
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 |
+ |
|
462 |
|
} |