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Comparing jsr166/src/test/tck/AtomicIntegerFieldUpdaterTest.java (file contents):
Revision 1.5 by dl, Sat Oct 25 16:02:13 2003 UTC vs.
Revision 1.13 by jsr166, Tue Nov 17 03:12:51 2009 UTC

# Line 1 | Line 1
1   /*
2 < * Written by members of JCP JSR-166 Expert Group and released to the
3 < * public domain. Use, modify, and redistribute this code in any way
4 < * without acknowledgement. Other contributors include Andrew Wright,
5 < * Jeffrey Hayes, Pat Fischer, Mike Judd.
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
5 > * Other contributors include Andrew Wright, Jeffrey Hayes,
6 > * Pat Fisher, Mike Judd.
7   */
8  
9   import java.util.concurrent.atomic.*;
# Line 13 | Line 14 | public class AtomicIntegerFieldUpdaterTe
14      volatile int x = 0;
15      int w;
16      long z;
17 <    public static void main(String[] args){
17 >    public static void main(String[] args) {
18          junit.textui.TestRunner.run(suite());
19      }
20      public static Test suite() {
# Line 21 | Line 22 | public class AtomicIntegerFieldUpdaterTe
22      }
23  
24      /**
25 <     * Contruction with non-existent field throws RuntimeException
25 >     * Construction with non-existent field throws RuntimeException
26       */
27      public void testConstructor() {
28 <        try{
29 <            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
28 >        try {
29 >            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
30                  a = AtomicIntegerFieldUpdater.newUpdater
31                  (AtomicIntegerFieldUpdaterTest.class, "y");
32              shouldThrow();
# Line 37 | Line 38 | public class AtomicIntegerFieldUpdaterTe
38       * construction with field not of given type throws RuntimeException
39       */
40      public void testConstructor2() {
41 <        try{
42 <            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
41 >        try {
42 >            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
43                  a = AtomicIntegerFieldUpdater.newUpdater
44                  (AtomicIntegerFieldUpdaterTest.class, "z");
45              shouldThrow();
# Line 50 | Line 51 | public class AtomicIntegerFieldUpdaterTe
51       * construction with non-volatile field throws RuntimeException
52       */
53      public void testConstructor3() {
54 <        try{
55 <            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
54 >        try {
55 >            AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>
56                  a = AtomicIntegerFieldUpdater.newUpdater
57                  (AtomicIntegerFieldUpdaterTest.class, "w");
58              shouldThrow();
# Line 63 | Line 64 | public class AtomicIntegerFieldUpdaterTe
64       *  get returns the last value set or assigned
65       */
66      public void testGetSet() {
67 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
67 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
68 >        try {
69 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
70 >        } catch (RuntimeException ok) {
71 >            return;
72 >        }
73          x = 1;
74          assertEquals(1,a.get(this));
75          a.set(this,2);
76          assertEquals(2,a.get(this));
77          a.set(this,-3);
78          assertEquals(-3,a.get(this));
79 <        
79 >
80      }
81 +
82 +    /**
83 +     *  get returns the last value lazySet by same thread
84 +     */
85 +    public void testGetLazySet() {
86 +        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
87 +        try {
88 +            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
89 +        } catch (RuntimeException ok) {
90 +            return;
91 +        }
92 +        x = 1;
93 +        assertEquals(1,a.get(this));
94 +        a.lazySet(this,2);
95 +        assertEquals(2,a.get(this));
96 +        a.lazySet(this,-3);
97 +        assertEquals(-3,a.get(this));
98 +
99 +    }
100 +
101      /**
102       * compareAndSet succeeds in changing value if equal to expected else fails
103       */
104      public void testCompareAndSet() {
105 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
105 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
106 >        try {
107 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
108 >        } catch (RuntimeException ok) {
109 >            return;
110 >        }
111          x = 1;
112          assertTrue(a.compareAndSet(this,1,2));
113          assertTrue(a.compareAndSet(this,2,-4));
# Line 92 | Line 123 | public class AtomicIntegerFieldUpdaterTe
123       * compareAndSet in one thread enables another waiting for value
124       * to succeed
125       */
126 <    public void testCompareAndSetInMultipleThreads() {
126 >    public void testCompareAndSetInMultipleThreads() throws Exception {
127          x = 1;
128 <        final AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
128 >        final AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>a;
129 >        try {
130 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
131 >        } catch (RuntimeException ok) {
132 >            return;
133 >        }
134  
135          Thread t = new Thread(new Runnable() {
136                  public void run() {
137 <                    while(!a.compareAndSet(AtomicIntegerFieldUpdaterTest.this, 2, 3)) Thread.yield();
137 >                    while (!a.compareAndSet(AtomicIntegerFieldUpdaterTest.this, 2, 3)) Thread.yield();
138                  }});
139 <        try {
140 <            t.start();
141 <            assertTrue(a.compareAndSet(this, 1, 2));
142 <            t.join(LONG_DELAY_MS);
143 <            assertFalse(t.isAlive());
144 <            assertEquals(a.get(this), 3);
109 <        }
110 <        catch(Exception e) {
111 <            unexpectedException();
112 <        }
139 >
140 >        t.start();
141 >        assertTrue(a.compareAndSet(this, 1, 2));
142 >        t.join(LONG_DELAY_MS);
143 >        assertFalse(t.isAlive());
144 >        assertEquals(a.get(this), 3);
145      }
146  
147      /**
148       * repeated weakCompareAndSet succeeds in changing value when equal
149 <     * to expected
149 >     * to expected
150       */
151      public void testWeakCompareAndSet() {
152 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
152 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
153 >        try {
154 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
155 >        } catch (RuntimeException ok) {
156 >            return;
157 >        }
158          x = 1;
159 <        while(!a.weakCompareAndSet(this,1,2));
160 <        while(!a.weakCompareAndSet(this,2,-4));
159 >        while (!a.weakCompareAndSet(this,1,2));
160 >        while (!a.weakCompareAndSet(this,2,-4));
161          assertEquals(-4,a.get(this));
162 <        while(!a.weakCompareAndSet(this,-4,7));
162 >        while (!a.weakCompareAndSet(this,-4,7));
163          assertEquals(7,a.get(this));
164      }
165  
# Line 130 | Line 167 | public class AtomicIntegerFieldUpdaterTe
167       *  getAndSet returns previous value and sets to given value
168       */
169      public void testGetAndSet() {
170 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
170 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
171 >        try {
172 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
173 >        } catch (RuntimeException ok) {
174 >            return;
175 >        }
176          x = 1;
177          assertEquals(1,a.getAndSet(this, 0));
178          assertEquals(0,a.getAndSet(this,-10));
# Line 141 | Line 183 | public class AtomicIntegerFieldUpdaterTe
183       * getAndAdd returns previous value and adds given value
184       */
185      public void testGetAndAdd() {
186 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
186 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
187 >        try {
188 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
189 >        } catch (RuntimeException ok) {
190 >            return;
191 >        }
192          x = 1;
193          assertEquals(1,a.getAndAdd(this,2));
194          assertEquals(3,a.get(this));
# Line 153 | Line 200 | public class AtomicIntegerFieldUpdaterTe
200       * getAndDecrement returns previous value and decrements
201       */
202      public void testGetAndDecrement() {
203 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
203 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
204 >        try {
205 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
206 >        } catch (RuntimeException ok) {
207 >            return;
208 >        }
209          x = 1;
210          assertEquals(1,a.getAndDecrement(this));
211          assertEquals(0,a.getAndDecrement(this));
# Line 164 | Line 216 | public class AtomicIntegerFieldUpdaterTe
216       * getAndIncrement returns previous value and increments
217       */
218      public void testGetAndIncrement() {
219 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
219 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
220 >        try {
221 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
222 >        } catch (RuntimeException ok) {
223 >            return;
224 >        }
225          x = 1;
226          assertEquals(1,a.getAndIncrement(this));
227          assertEquals(2,a.get(this));
# Line 179 | Line 236 | public class AtomicIntegerFieldUpdaterTe
236       * addAndGet adds given value to current, and returns current value
237       */
238      public void testAddAndGet() {
239 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
239 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
240 >        try {
241 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
242 >        } catch (RuntimeException ok) {
243 >            return;
244 >        }
245          x = 1;
246          assertEquals(3,a.addAndGet(this,2));
247          assertEquals(3,a.get(this));
# Line 191 | Line 253 | public class AtomicIntegerFieldUpdaterTe
253       * decrementAndGet decrements and returns current value
254       */
255      public void testDecrementAndGet() {
256 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
256 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
257 >        try {
258 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
259 >        } catch (RuntimeException ok) {
260 >            return;
261 >        }
262          x = 1;
263          assertEquals(0,a.decrementAndGet(this));
264          assertEquals(-1,a.decrementAndGet(this));
# Line 203 | Line 270 | public class AtomicIntegerFieldUpdaterTe
270       * incrementAndGet increments and returns current value
271       */
272      public void testIncrementAndGet() {
273 <        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
273 >        AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
274 >        try {
275 >            a = AtomicIntegerFieldUpdater.newUpdater(AtomicIntegerFieldUpdaterTest.class, "x");
276 >        } catch (RuntimeException ok) {
277 >            return;
278 >        }
279          x = 1;
280          assertEquals(2,a.incrementAndGet(this));
281          assertEquals(2,a.get(this));

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