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Comparing jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java (file contents):
Revision 1.6 by dl, Sat Dec 27 19:26:43 2003 UTC vs.
Revision 1.13 by jsr166, Tue Nov 17 03:12:51 2009 UTC

#	Line 2 | Line 2
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.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import java.util.concurrent.atomic.*;
#	Line 15 | Line 15 | public class AtomicLongFieldUpdaterTest
15		int z;
16		long w;
17
18	<	public static void main(String[] args){
18	>	public static void main(String[] args) {
19		junit.textui.TestRunner.run(suite());
20		}
21		public static Test suite() {
#	Line 23 | Line 23 | public class AtomicLongFieldUpdaterTest
23		}
24
25		/**
26	<	* Contruction with non-existent field throws RuntimeException
26	>	* Construction with non-existent field throws RuntimeException
27		*/
28	<	public void testConstructor(){
29	<	try{
30	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
28	>	public void testConstructor() {
29	>	try {
30	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
31		a = AtomicLongFieldUpdater.newUpdater
32		(AtomicLongFieldUpdaterTest.class, "y");
33		shouldThrow();
#	Line 38 | Line 38 | public class AtomicLongFieldUpdaterTest
38		/**
39		* construction with field not of given type throws RuntimeException
40		*/
41	<	public void testConstructor2(){
42	<	try{
43	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
41	>	public void testConstructor2() {
42	>	try {
43	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
44		a = AtomicLongFieldUpdater.newUpdater
45		(AtomicLongFieldUpdaterTest.class, "z");
46		shouldThrow();
#	Line 51 | Line 51 | public class AtomicLongFieldUpdaterTest
51		/**
52		* construction with non-volatile field throws RuntimeException
53		*/
54	<	public void testConstructor3(){
55	<	try{
56	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
54	>	public void testConstructor3() {
55	>	try {
56	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
57		a = AtomicLongFieldUpdater.newUpdater
58		(AtomicLongFieldUpdaterTest.class, "w");
59		shouldThrow();
#	Line 65 | Line 65 | public class AtomicLongFieldUpdaterTest
65		/**
66		*  get returns the last value set or assigned
67		*/
68	<	public void testGetSet(){
69	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
68	>	public void testGetSet() {
69	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
70	>	try {
71	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
72	>	} catch (RuntimeException ok) {
73	>	return;
74	>	}
75		x = 1;
76		assertEquals(1,a.get(this));
77		a.set(this,2);
78		assertEquals(2,a.get(this));
79		a.set(this,-3);
80		assertEquals(-3,a.get(this));
76	–
81		}
82	+
83	+	/**
84	+	*  get returns the last value lazySet by same thread
85	+	*/
86	+	public void testGetLazySet() {
87	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
88	+	try {
89	+	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
90	+	} catch (RuntimeException ok) {
91	+	return;
92	+	}
93	+	x = 1;
94	+	assertEquals(1,a.get(this));
95	+	a.lazySet(this,2);
96	+	assertEquals(2,a.get(this));
97	+	a.lazySet(this,-3);
98	+	assertEquals(-3,a.get(this));
99	+	}
100	+
101	+
102		/**
103		* compareAndSet succeeds in changing value if equal to expected else fails
104		*/
105	<	public void testCompareAndSet(){
106	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
105	>	public void testCompareAndSet() {
106	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
107	>	try {
108	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
109	>	} catch (RuntimeException ok) {
110	>	return;
111	>	}
112		x = 1;
113		assertTrue(a.compareAndSet(this,1,2));
114		assertTrue(a.compareAndSet(this,2,-4));
#	Line 95 | Line 124 | public class AtomicLongFieldUpdaterTest
124		* compareAndSet in one thread enables another waiting for value
125		* to succeed
126		*/
127	<	public void testCompareAndSetInMultipleThreads() {
127	>	public void testCompareAndSetInMultipleThreads() throws Exception {
128		x = 1;
129	<	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
129	>	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a;
130	>	try {
131	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
132	>	} catch (RuntimeException ok) {
133	>	return;
134	>	}
135
136		Thread t = new Thread(new Runnable() {
137		public void run() {
138	<	while(!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) Thread.yield();
138	>	while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) Thread.yield();
139		}});
140	<	try {
141	<	t.start();
142	<	assertTrue(a.compareAndSet(this, 1, 2));
143	<	t.join(LONG_DELAY_MS);
144	<	assertFalse(t.isAlive());
145	<	assertEquals(a.get(this), 3);
112	<	}
113	<	catch(Exception e) {
114	<	unexpectedException();
115	<	}
140	>
141	>	t.start();
142	>	assertTrue(a.compareAndSet(this, 1, 2));
143	>	t.join(LONG_DELAY_MS);
144	>	assertFalse(t.isAlive());
145	>	assertEquals(a.get(this), 3);
146		}
147
148		/**
149		* repeated weakCompareAndSet succeeds in changing value when equal
150	<	* to expected
150	>	* to expected
151		*/
152	<	public void testWeakCompareAndSet(){
153	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
152	>	public void testWeakCompareAndSet() {
153	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
154	>	try {
155	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
156	>	} catch (RuntimeException ok) {
157	>	return;
158	>	}
159		x = 1;
160	<	while(!a.weakCompareAndSet(this,1,2));
161	<	while(!a.weakCompareAndSet(this,2,-4));
160	>	while (!a.weakCompareAndSet(this,1,2));
161	>	while (!a.weakCompareAndSet(this,2,-4));
162		assertEquals(-4,a.get(this));
163	<	while(!a.weakCompareAndSet(this,-4,7));
163	>	while (!a.weakCompareAndSet(this,-4,7));
164		assertEquals(7,a.get(this));
165		}
166
167		/**
168		*  getAndSet returns previous value and sets to given value
169		*/
170	<	public void testGetAndSet(){
171	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
170	>	public void testGetAndSet() {
171	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
172	>	try {
173	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
174	>	} catch (RuntimeException ok) {
175	>	return;
176	>	}
177		x = 1;
178		assertEquals(1,a.getAndSet(this, 0));
179		assertEquals(0,a.getAndSet(this,-10));
#	Line 143 | Line 183 | public class AtomicLongFieldUpdaterTest
183		/**
184		* getAndAdd returns previous value and adds given value
185		*/
186	<	public void testGetAndAdd(){
187	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
186	>	public void testGetAndAdd() {
187	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
188	>	try {
189	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
190	>	} catch (RuntimeException ok) {
191	>	return;
192	>	}
193		x = 1;
194		assertEquals(1,a.getAndAdd(this,2));
195		assertEquals(3,a.get(this));
#	Line 155 | Line 200 | public class AtomicLongFieldUpdaterTest
200		/**
201		* getAndDecrement returns previous value and decrements
202		*/
203	<	public void testGetAndDecrement(){
204	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
203	>	public void testGetAndDecrement() {
204	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
205	>	try {
206	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
207	>	} catch (RuntimeException ok) {
208	>	return;
209	>	}
210		x = 1;
211		assertEquals(1,a.getAndDecrement(this));
212		assertEquals(0,a.getAndDecrement(this));
#	Line 166 | Line 216 | public class AtomicLongFieldUpdaterTest
216		/**
217		* getAndIncrement returns previous value and increments
218		*/
219	<	public void testGetAndIncrement(){
220	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
219	>	public void testGetAndIncrement() {
220	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
221	>	try {
222	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
223	>	} catch (RuntimeException ok) {
224	>	return;
225	>	}
226		x = 1;
227		assertEquals(1,a.getAndIncrement(this));
228		assertEquals(2,a.get(this));
#	Line 181 | Line 236 | public class AtomicLongFieldUpdaterTest
236		/**
237		* addAndGet adds given value to current, and returns current value
238		*/
239	<	public void testAddAndGet(){
240	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
239	>	public void testAddAndGet() {
240	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
241	>	try {
242	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
243	>	} catch (RuntimeException ok) {
244	>	return;
245	>	}
246		x = 1;
247		assertEquals(3,a.addAndGet(this,2));
248		assertEquals(3,a.get(this));
#	Line 193 | Line 253 | public class AtomicLongFieldUpdaterTest
253		/**
254		*  decrementAndGet decrements and returns current value
255		*/
256	<	public void testDecrementAndGet(){
257	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
256	>	public void testDecrementAndGet() {
257	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
258	>	try {
259	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
260	>	} catch (RuntimeException ok) {
261	>	return;
262	>	}
263		x = 1;
264		assertEquals(0,a.decrementAndGet(this));
265		assertEquals(-1,a.decrementAndGet(this));
#	Line 205 | Line 270 | public class AtomicLongFieldUpdaterTest
270		/**
271		* incrementAndGet increments and returns current value
272		*/
273	<	public void testIncrementAndGet(){
274	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
273	>	public void testIncrementAndGet() {
274	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
275	>	try {
276	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
277	>	} catch (RuntimeException ok) {
278	>	return;
279	>	}
280		x = 1;
281		assertEquals(2,a.incrementAndGet(this));
282		assertEquals(2,a.get(this));

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