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/licenses/publicdomain |
4 |
> |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
|
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
|
* Pat Fisher, Mike Judd. |
7 |
|
*/ |
8 |
|
|
9 |
< |
import java.util.concurrent.atomic.*; |
10 |
< |
import junit.framework.*; |
11 |
< |
import java.util.*; |
9 |
> |
import java.util.concurrent.atomic.AtomicLongFieldUpdater; |
10 |
> |
|
11 |
> |
import junit.framework.Test; |
12 |
> |
import junit.framework.TestSuite; |
13 |
|
|
14 |
|
public class AtomicLongFieldUpdaterTest extends JSR166TestCase { |
15 |
|
volatile long x = 0; |
16 |
< |
int z; |
16 |
> |
protected volatile long protectedField; |
17 |
> |
private volatile long privateField; |
18 |
|
long w; |
19 |
< |
|
20 |
< |
public static void main(String[] args){ |
21 |
< |
junit.textui.TestRunner.run(suite()); |
19 |
> |
float z; |
20 |
> |
public static void main(String[] args) { |
21 |
> |
main(suite(), args); |
22 |
|
} |
23 |
|
public static Test suite() { |
24 |
|
return new TestSuite(AtomicLongFieldUpdaterTest.class); |
25 |
|
} |
26 |
|
|
27 |
+ |
// for testing subclass access |
28 |
+ |
static class AtomicLongFieldUpdaterTestSubclass extends AtomicLongFieldUpdaterTest { |
29 |
+ |
public void checkPrivateAccess() { |
30 |
+ |
try { |
31 |
+ |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = |
32 |
+ |
AtomicLongFieldUpdater.newUpdater |
33 |
+ |
(AtomicLongFieldUpdaterTest.class, "privateField"); |
34 |
+ |
shouldThrow(); |
35 |
+ |
} catch (RuntimeException success) { |
36 |
+ |
assertNotNull(success.getCause()); |
37 |
+ |
} |
38 |
+ |
} |
39 |
+ |
|
40 |
+ |
public void checkCompareAndSetProtectedSub() { |
41 |
+ |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
42 |
+ |
a = updaterFor("protectedField"); |
43 |
+ |
protectedField = 1; |
44 |
+ |
assertTrue(a.compareAndSet(this, 1, 2)); |
45 |
+ |
assertTrue(a.compareAndSet(this, 2, -4)); |
46 |
+ |
assertEquals(-4, a.get(this)); |
47 |
+ |
assertFalse(a.compareAndSet(this, -5, 7)); |
48 |
+ |
assertEquals(-4, a.get(this)); |
49 |
+ |
assertTrue(a.compareAndSet(this, -4, 7)); |
50 |
+ |
assertEquals(7, a.get(this)); |
51 |
+ |
} |
52 |
+ |
} |
53 |
+ |
|
54 |
+ |
static class UnrelatedClass { |
55 |
+ |
public void checkPackageAccess(AtomicLongFieldUpdaterTest obj) { |
56 |
+ |
obj.x = 72L; |
57 |
+ |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = |
58 |
+ |
AtomicLongFieldUpdater.newUpdater |
59 |
+ |
(AtomicLongFieldUpdaterTest.class, "x"); |
60 |
+ |
assertEquals(72L, a.get(obj)); |
61 |
+ |
assertTrue(a.compareAndSet(obj, 72L, 73L)); |
62 |
+ |
assertEquals(73L, a.get(obj)); |
63 |
+ |
} |
64 |
+ |
|
65 |
+ |
public void checkPrivateAccess(AtomicLongFieldUpdaterTest obj) { |
66 |
+ |
try { |
67 |
+ |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = |
68 |
+ |
AtomicLongFieldUpdater.newUpdater |
69 |
+ |
(AtomicLongFieldUpdaterTest.class, "privateField"); |
70 |
+ |
throw new AssertionError("should throw"); |
71 |
+ |
} catch (RuntimeException success) { |
72 |
+ |
assertNotNull(success.getCause()); |
73 |
+ |
} |
74 |
+ |
} |
75 |
+ |
} |
76 |
+ |
|
77 |
+ |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> updaterFor(String fieldName) { |
78 |
+ |
return AtomicLongFieldUpdater.newUpdater |
79 |
+ |
(AtomicLongFieldUpdaterTest.class, fieldName); |
80 |
+ |
} |
81 |
+ |
|
82 |
|
/** |
83 |
|
* Construction with non-existent field throws RuntimeException |
84 |
|
*/ |
85 |
< |
public void testConstructor(){ |
85 |
> |
public void testConstructor() { |
86 |
|
try { |
87 |
< |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
31 |
< |
a = AtomicLongFieldUpdater.newUpdater |
32 |
< |
(AtomicLongFieldUpdaterTest.class, "y"); |
87 |
> |
updaterFor("y"); |
88 |
|
shouldThrow(); |
89 |
+ |
} catch (RuntimeException success) { |
90 |
+ |
assertNotNull(success.getCause()); |
91 |
|
} |
35 |
– |
catch (RuntimeException rt) {} |
92 |
|
} |
93 |
|
|
94 |
|
/** |
95 |
< |
* construction with field not of given type throws RuntimeException |
95 |
> |
* construction with field not of given type throws IllegalArgumentException |
96 |
|
*/ |
97 |
< |
public void testConstructor2(){ |
97 |
> |
public void testConstructor2() { |
98 |
|
try { |
99 |
< |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
44 |
< |
a = AtomicLongFieldUpdater.newUpdater |
45 |
< |
(AtomicLongFieldUpdaterTest.class, "z"); |
99 |
> |
updaterFor("z"); |
100 |
|
shouldThrow(); |
101 |
< |
} |
48 |
< |
catch (RuntimeException rt) {} |
101 |
> |
} catch (IllegalArgumentException success) {} |
102 |
|
} |
103 |
|
|
104 |
|
/** |
105 |
< |
* construction with non-volatile field throws RuntimeException |
105 |
> |
* construction with non-volatile field throws IllegalArgumentException |
106 |
|
*/ |
107 |
< |
public void testConstructor3(){ |
107 |
> |
public void testConstructor3() { |
108 |
|
try { |
109 |
< |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> |
57 |
< |
a = AtomicLongFieldUpdater.newUpdater |
58 |
< |
(AtomicLongFieldUpdaterTest.class, "w"); |
109 |
> |
updaterFor("w"); |
110 |
|
shouldThrow(); |
111 |
< |
} |
111 |
> |
} catch (IllegalArgumentException success) {} |
112 |
> |
} |
113 |
|
|
114 |
< |
catch (RuntimeException rt) {} |
114 |
> |
/** |
115 |
> |
* construction using private field from subclass throws RuntimeException |
116 |
> |
*/ |
117 |
> |
public void testPrivateFieldInSubclass() { |
118 |
> |
AtomicLongFieldUpdaterTestSubclass s = |
119 |
> |
new AtomicLongFieldUpdaterTestSubclass(); |
120 |
> |
s.checkPrivateAccess(); |
121 |
|
} |
122 |
|
|
123 |
|
/** |
124 |
< |
* get returns the last value set or assigned |
124 |
> |
* construction from unrelated class; package access is allowed, |
125 |
> |
* private access is not |
126 |
|
*/ |
127 |
< |
public void testGetSet(){ |
127 |
> |
public void testUnrelatedClassAccess() { |
128 |
> |
new UnrelatedClass().checkPackageAccess(this); |
129 |
> |
new UnrelatedClass().checkPrivateAccess(this); |
130 |
> |
} |
131 |
> |
|
132 |
> |
/** |
133 |
> |
* get returns the last value set or assigned |
134 |
> |
*/ |
135 |
> |
public void testGetSet() { |
136 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
137 |
< |
try { |
71 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
72 |
< |
} catch (RuntimeException ok) { |
73 |
< |
return; |
74 |
< |
} |
137 |
> |
a = updaterFor("x"); |
138 |
|
x = 1; |
139 |
< |
assertEquals(1,a.get(this)); |
140 |
< |
a.set(this,2); |
141 |
< |
assertEquals(2,a.get(this)); |
142 |
< |
a.set(this,-3); |
143 |
< |
assertEquals(-3,a.get(this)); |
139 |
> |
assertEquals(1, a.get(this)); |
140 |
> |
a.set(this, 2); |
141 |
> |
assertEquals(2, a.get(this)); |
142 |
> |
a.set(this, -3); |
143 |
> |
assertEquals(-3, a.get(this)); |
144 |
|
} |
145 |
|
|
146 |
|
/** |
147 |
< |
* get returns the last value lazySet by same thread |
147 |
> |
* get returns the last value lazySet by same thread |
148 |
|
*/ |
149 |
< |
public void testGetLazySet(){ |
149 |
> |
public void testGetLazySet() { |
150 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
151 |
< |
try { |
89 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
90 |
< |
} catch (RuntimeException ok) { |
91 |
< |
return; |
92 |
< |
} |
151 |
> |
a = updaterFor("x"); |
152 |
|
x = 1; |
153 |
< |
assertEquals(1,a.get(this)); |
154 |
< |
a.lazySet(this,2); |
155 |
< |
assertEquals(2,a.get(this)); |
156 |
< |
a.lazySet(this,-3); |
157 |
< |
assertEquals(-3,a.get(this)); |
153 |
> |
assertEquals(1, a.get(this)); |
154 |
> |
a.lazySet(this, 2); |
155 |
> |
assertEquals(2, a.get(this)); |
156 |
> |
a.lazySet(this, -3); |
157 |
> |
assertEquals(-3, a.get(this)); |
158 |
|
} |
159 |
|
|
101 |
– |
|
160 |
|
/** |
161 |
|
* compareAndSet succeeds in changing value if equal to expected else fails |
162 |
|
*/ |
163 |
< |
public void testCompareAndSet(){ |
163 |
> |
public void testCompareAndSet() { |
164 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
165 |
< |
try { |
108 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
109 |
< |
} catch (RuntimeException ok) { |
110 |
< |
return; |
111 |
< |
} |
165 |
> |
a = updaterFor("x"); |
166 |
|
x = 1; |
167 |
< |
assertTrue(a.compareAndSet(this,1,2)); |
168 |
< |
assertTrue(a.compareAndSet(this,2,-4)); |
169 |
< |
assertEquals(-4,a.get(this)); |
170 |
< |
assertFalse(a.compareAndSet(this,-5,7)); |
171 |
< |
assertFalse((7 == a.get(this))); |
172 |
< |
assertTrue(a.compareAndSet(this,-4,7)); |
173 |
< |
assertEquals(7,a.get(this)); |
167 |
> |
assertTrue(a.compareAndSet(this, 1, 2)); |
168 |
> |
assertTrue(a.compareAndSet(this, 2, -4)); |
169 |
> |
assertEquals(-4, a.get(this)); |
170 |
> |
assertFalse(a.compareAndSet(this, -5, 7)); |
171 |
> |
assertEquals(-4, a.get(this)); |
172 |
> |
assertTrue(a.compareAndSet(this, -4, 7)); |
173 |
> |
assertEquals(7, a.get(this)); |
174 |
|
} |
175 |
|
|
176 |
+ |
/** |
177 |
+ |
* compareAndSet succeeds in changing protected field value if |
178 |
+ |
* equal to expected else fails |
179 |
+ |
*/ |
180 |
+ |
public void testCompareAndSetProtected() { |
181 |
+ |
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
182 |
+ |
a = updaterFor("protectedField"); |
183 |
+ |
protectedField = 1; |
184 |
+ |
assertTrue(a.compareAndSet(this, 1, 2)); |
185 |
+ |
assertTrue(a.compareAndSet(this, 2, -4)); |
186 |
+ |
assertEquals(-4, a.get(this)); |
187 |
+ |
assertFalse(a.compareAndSet(this, -5, 7)); |
188 |
+ |
assertEquals(-4, a.get(this)); |
189 |
+ |
assertTrue(a.compareAndSet(this, -4, 7)); |
190 |
+ |
assertEquals(7, a.get(this)); |
191 |
+ |
} |
192 |
+ |
|
193 |
+ |
/** |
194 |
+ |
* compareAndSet succeeds in changing protected field value if |
195 |
+ |
* equal to expected else fails |
196 |
+ |
*/ |
197 |
+ |
public void testCompareAndSetProtectedInSubclass() { |
198 |
+ |
AtomicLongFieldUpdaterTestSubclass s = |
199 |
+ |
new AtomicLongFieldUpdaterTestSubclass(); |
200 |
+ |
s.checkCompareAndSetProtectedSub(); |
201 |
+ |
} |
202 |
|
|
203 |
|
/** |
204 |
|
* compareAndSet in one thread enables another waiting for value |
205 |
|
* to succeed |
206 |
|
*/ |
207 |
< |
public void testCompareAndSetInMultipleThreads() { |
207 |
> |
public void testCompareAndSetInMultipleThreads() throws Exception { |
208 |
|
x = 1; |
209 |
< |
final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a; |
210 |
< |
try { |
131 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
132 |
< |
} catch (RuntimeException ok) { |
133 |
< |
return; |
134 |
< |
} |
209 |
> |
final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
210 |
> |
a = updaterFor("x"); |
211 |
|
|
212 |
< |
Thread t = new Thread(new Runnable() { |
213 |
< |
public void run() { |
214 |
< |
while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) Thread.yield(); |
215 |
< |
}}); |
216 |
< |
try { |
217 |
< |
t.start(); |
218 |
< |
assertTrue(a.compareAndSet(this, 1, 2)); |
219 |
< |
t.join(LONG_DELAY_MS); |
220 |
< |
assertFalse(t.isAlive()); |
221 |
< |
assertEquals(a.get(this), 3); |
222 |
< |
} |
147 |
< |
catch (Exception e) { |
148 |
< |
unexpectedException(); |
149 |
< |
} |
212 |
> |
Thread t = new Thread(new CheckedRunnable() { |
213 |
> |
public void realRun() { |
214 |
> |
while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) |
215 |
> |
Thread.yield(); |
216 |
> |
}}); |
217 |
> |
|
218 |
> |
t.start(); |
219 |
> |
assertTrue(a.compareAndSet(this, 1, 2)); |
220 |
> |
t.join(LONG_DELAY_MS); |
221 |
> |
assertFalse(t.isAlive()); |
222 |
> |
assertEquals(3, a.get(this)); |
223 |
|
} |
224 |
|
|
225 |
|
/** |
226 |
|
* repeated weakCompareAndSet succeeds in changing value when equal |
227 |
|
* to expected |
228 |
|
*/ |
229 |
< |
public void testWeakCompareAndSet(){ |
229 |
> |
public void testWeakCompareAndSet() { |
230 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
231 |
< |
try { |
159 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
160 |
< |
} catch (RuntimeException ok) { |
161 |
< |
return; |
162 |
< |
} |
231 |
> |
a = updaterFor("x"); |
232 |
|
x = 1; |
233 |
< |
while (!a.weakCompareAndSet(this,1,2)); |
234 |
< |
while (!a.weakCompareAndSet(this,2,-4)); |
235 |
< |
assertEquals(-4,a.get(this)); |
236 |
< |
while (!a.weakCompareAndSet(this,-4,7)); |
237 |
< |
assertEquals(7,a.get(this)); |
233 |
> |
do {} while (!a.weakCompareAndSet(this, 1, 2)); |
234 |
> |
do {} while (!a.weakCompareAndSet(this, 2, -4)); |
235 |
> |
assertEquals(-4, a.get(this)); |
236 |
> |
do {} while (!a.weakCompareAndSet(this, -4, 7)); |
237 |
> |
assertEquals(7, a.get(this)); |
238 |
|
} |
239 |
|
|
240 |
|
/** |
241 |
< |
* getAndSet returns previous value and sets to given value |
241 |
> |
* getAndSet returns previous value and sets to given value |
242 |
|
*/ |
243 |
< |
public void testGetAndSet(){ |
243 |
> |
public void testGetAndSet() { |
244 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
245 |
< |
try { |
177 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
178 |
< |
} catch (RuntimeException ok) { |
179 |
< |
return; |
180 |
< |
} |
245 |
> |
a = updaterFor("x"); |
246 |
|
x = 1; |
247 |
< |
assertEquals(1,a.getAndSet(this, 0)); |
248 |
< |
assertEquals(0,a.getAndSet(this,-10)); |
249 |
< |
assertEquals(-10,a.getAndSet(this,1)); |
247 |
> |
assertEquals(1, a.getAndSet(this, 0)); |
248 |
> |
assertEquals(0, a.getAndSet(this, -10)); |
249 |
> |
assertEquals(-10, a.getAndSet(this, 1)); |
250 |
|
} |
251 |
|
|
252 |
|
/** |
253 |
|
* getAndAdd returns previous value and adds given value |
254 |
|
*/ |
255 |
< |
public void testGetAndAdd(){ |
255 |
> |
public void testGetAndAdd() { |
256 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
257 |
< |
try { |
193 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
194 |
< |
} catch (RuntimeException ok) { |
195 |
< |
return; |
196 |
< |
} |
257 |
> |
a = updaterFor("x"); |
258 |
|
x = 1; |
259 |
< |
assertEquals(1,a.getAndAdd(this,2)); |
260 |
< |
assertEquals(3,a.get(this)); |
261 |
< |
assertEquals(3,a.getAndAdd(this,-4)); |
262 |
< |
assertEquals(-1,a.get(this)); |
259 |
> |
assertEquals(1, a.getAndAdd(this, 2)); |
260 |
> |
assertEquals(3, a.get(this)); |
261 |
> |
assertEquals(3, a.getAndAdd(this, -4)); |
262 |
> |
assertEquals(-1, a.get(this)); |
263 |
|
} |
264 |
|
|
265 |
|
/** |
266 |
|
* getAndDecrement returns previous value and decrements |
267 |
|
*/ |
268 |
< |
public void testGetAndDecrement(){ |
268 |
> |
public void testGetAndDecrement() { |
269 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
270 |
< |
try { |
210 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
211 |
< |
} catch (RuntimeException ok) { |
212 |
< |
return; |
213 |
< |
} |
270 |
> |
a = updaterFor("x"); |
271 |
|
x = 1; |
272 |
< |
assertEquals(1,a.getAndDecrement(this)); |
273 |
< |
assertEquals(0,a.getAndDecrement(this)); |
274 |
< |
assertEquals(-1,a.getAndDecrement(this)); |
272 |
> |
assertEquals(1, a.getAndDecrement(this)); |
273 |
> |
assertEquals(0, a.getAndDecrement(this)); |
274 |
> |
assertEquals(-1, a.getAndDecrement(this)); |
275 |
|
} |
276 |
|
|
277 |
|
/** |
278 |
|
* getAndIncrement returns previous value and increments |
279 |
|
*/ |
280 |
< |
public void testGetAndIncrement(){ |
280 |
> |
public void testGetAndIncrement() { |
281 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
282 |
< |
try { |
226 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
227 |
< |
} catch (RuntimeException ok) { |
228 |
< |
return; |
229 |
< |
} |
282 |
> |
a = updaterFor("x"); |
283 |
|
x = 1; |
284 |
< |
assertEquals(1,a.getAndIncrement(this)); |
285 |
< |
assertEquals(2,a.get(this)); |
286 |
< |
a.set(this,-2); |
287 |
< |
assertEquals(-2,a.getAndIncrement(this)); |
288 |
< |
assertEquals(-1,a.getAndIncrement(this)); |
289 |
< |
assertEquals(0,a.getAndIncrement(this)); |
290 |
< |
assertEquals(1,a.get(this)); |
284 |
> |
assertEquals(1, a.getAndIncrement(this)); |
285 |
> |
assertEquals(2, a.get(this)); |
286 |
> |
a.set(this, -2); |
287 |
> |
assertEquals(-2, a.getAndIncrement(this)); |
288 |
> |
assertEquals(-1, a.getAndIncrement(this)); |
289 |
> |
assertEquals(0, a.getAndIncrement(this)); |
290 |
> |
assertEquals(1, a.get(this)); |
291 |
|
} |
292 |
|
|
293 |
|
/** |
294 |
|
* addAndGet adds given value to current, and returns current value |
295 |
|
*/ |
296 |
< |
public void testAddAndGet(){ |
296 |
> |
public void testAddAndGet() { |
297 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
298 |
< |
try { |
246 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
247 |
< |
} catch (RuntimeException ok) { |
248 |
< |
return; |
249 |
< |
} |
298 |
> |
a = updaterFor("x"); |
299 |
|
x = 1; |
300 |
< |
assertEquals(3,a.addAndGet(this,2)); |
301 |
< |
assertEquals(3,a.get(this)); |
302 |
< |
assertEquals(-1,a.addAndGet(this,-4)); |
303 |
< |
assertEquals(-1,a.get(this)); |
300 |
> |
assertEquals(3, a.addAndGet(this, 2)); |
301 |
> |
assertEquals(3, a.get(this)); |
302 |
> |
assertEquals(-1, a.addAndGet(this, -4)); |
303 |
> |
assertEquals(-1, a.get(this)); |
304 |
|
} |
305 |
|
|
306 |
|
/** |
307 |
< |
* decrementAndGet decrements and returns current value |
307 |
> |
* decrementAndGet decrements and returns current value |
308 |
|
*/ |
309 |
< |
public void testDecrementAndGet(){ |
309 |
> |
public void testDecrementAndGet() { |
310 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
311 |
< |
try { |
263 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
264 |
< |
} catch (RuntimeException ok) { |
265 |
< |
return; |
266 |
< |
} |
311 |
> |
a = updaterFor("x"); |
312 |
|
x = 1; |
313 |
< |
assertEquals(0,a.decrementAndGet(this)); |
314 |
< |
assertEquals(-1,a.decrementAndGet(this)); |
315 |
< |
assertEquals(-2,a.decrementAndGet(this)); |
316 |
< |
assertEquals(-2,a.get(this)); |
313 |
> |
assertEquals(0, a.decrementAndGet(this)); |
314 |
> |
assertEquals(-1, a.decrementAndGet(this)); |
315 |
> |
assertEquals(-2, a.decrementAndGet(this)); |
316 |
> |
assertEquals(-2, a.get(this)); |
317 |
|
} |
318 |
|
|
319 |
|
/** |
320 |
|
* incrementAndGet increments and returns current value |
321 |
|
*/ |
322 |
< |
public void testIncrementAndGet(){ |
322 |
> |
public void testIncrementAndGet() { |
323 |
|
AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a; |
324 |
< |
try { |
280 |
< |
a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x"); |
281 |
< |
} catch (RuntimeException ok) { |
282 |
< |
return; |
283 |
< |
} |
324 |
> |
a = updaterFor("x"); |
325 |
|
x = 1; |
326 |
< |
assertEquals(2,a.incrementAndGet(this)); |
327 |
< |
assertEquals(2,a.get(this)); |
328 |
< |
a.set(this,-2); |
329 |
< |
assertEquals(-1,a.incrementAndGet(this)); |
330 |
< |
assertEquals(0,a.incrementAndGet(this)); |
331 |
< |
assertEquals(1,a.incrementAndGet(this)); |
332 |
< |
assertEquals(1,a.get(this)); |
326 |
> |
assertEquals(2, a.incrementAndGet(this)); |
327 |
> |
assertEquals(2, a.get(this)); |
328 |
> |
a.set(this, -2); |
329 |
> |
assertEquals(-1, a.incrementAndGet(this)); |
330 |
> |
assertEquals(0, a.incrementAndGet(this)); |
331 |
> |
assertEquals(1, a.incrementAndGet(this)); |
332 |
> |
assertEquals(1, a.get(this)); |
333 |
|
} |
334 |
|
|
335 |
|
} |