ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

root/jsr166/jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java

Comparing jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java (file contents):
Revision 1.4 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.21 by jsr166, Tue May 31 16:16:23 2011 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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
8	–	import java.util.concurrent.atomic.*;
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.util.concurrent.atomic.AtomicLongFieldUpdater;
11
12		public class AtomicLongFieldUpdaterTest extends JSR166TestCase {
13		volatile long x = 0;
14		int z;
15		long w;
16
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 22 | Line 22 | public class AtomicLongFieldUpdaterTest
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	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
27	>	public void testConstructor() {
28	>	try {
29	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
30		a = AtomicLongFieldUpdater.newUpdater
31	<	(getClass(), "y");
31	>	(AtomicLongFieldUpdaterTest.class, "y");
32		shouldThrow();
33	<	}
34	<	catch (RuntimeException rt) {}
33	>	} catch (RuntimeException success) {}
34		}
35
36		/**
37		* construction with field not of given type throws RuntimeException
38		*/
39	<	public void testConstructor2(){
40	<	try{
41	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
39	>	public void testConstructor2() {
40	>	try {
41	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
42		a = AtomicLongFieldUpdater.newUpdater
43	<	(getClass(), "z");
43	>	(AtomicLongFieldUpdaterTest.class, "z");
44		shouldThrow();
45	<	}
47	<	catch (RuntimeException rt) {}
45	>	} catch (RuntimeException success) {}
46		}
47
48		/**
49		* construction with non-volatile field throws RuntimeException
50		*/
51	<	public void testConstructor3(){
52	<	try{
53	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
51	>	public void testConstructor3() {
52	>	try {
53	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
54		a = AtomicLongFieldUpdater.newUpdater
55	<	(getClass(), "w");
55	>	(AtomicLongFieldUpdaterTest.class, "w");
56		shouldThrow();
57	<	}
57	>	} catch (RuntimeException success) {}
58	>	}
59
60	<	catch (RuntimeException rt) {}
60	>	/**
61	>	* get returns the last value set or assigned
62	>	*/
63	>	public void testGetSet() {
64	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
65	>	try {
66	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
67	>	} catch (RuntimeException ok) {
68	>	return;
69	>	}
70	>	x = 1;
71	>	assertEquals(1,a.get(this));
72	>	a.set(this,2);
73	>	assertEquals(2,a.get(this));
74	>	a.set(this,-3);
75	>	assertEquals(-3,a.get(this));
76		}
77
78		/**
79	<	*  get returns the last value set or assigned
79	>	* get returns the last value lazySet by same thread
80		*/
81	<	public void testGetSet(){
82	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
81	>	public void testGetLazySet() {
82	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
83	>	try {
84	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
85	>	} catch (RuntimeException ok) {
86	>	return;
87	>	}
88		x = 1;
89	<	assertEquals(1,a.get(this));
90	<	a.set(this,2);
91	<	assertEquals(2,a.get(this));
92	<	a.set(this,-3);
93	<	assertEquals(-3,a.get(this));
75	<
89	>	assertEquals(1,a.get(this));
90	>	a.lazySet(this,2);
91	>	assertEquals(2,a.get(this));
92	>	a.lazySet(this,-3);
93	>	assertEquals(-3,a.get(this));
94		}
95	+
96		/**
97		* compareAndSet succeeds in changing value if equal to expected else fails
98		*/
99	<	public void testCompareAndSet(){
100	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
99	>	public void testCompareAndSet() {
100	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
101	>	try {
102	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
103	>	} catch (RuntimeException ok) {
104	>	return;
105	>	}
106		x = 1;
107	<	assertTrue(a.compareAndSet(this,1,2));
108	<	assertTrue(a.compareAndSet(this,2,-4));
109	<	assertEquals(-4,a.get(this));
110	<	assertFalse(a.compareAndSet(this,-5,7));
111	<	assertFalse((7 == a.get(this)));
112	<	assertTrue(a.compareAndSet(this,-4,7));
113	<	assertEquals(7,a.get(this));
107	>	assertTrue(a.compareAndSet(this,1,2));
108	>	assertTrue(a.compareAndSet(this,2,-4));
109	>	assertEquals(-4,a.get(this));
110	>	assertFalse(a.compareAndSet(this,-5,7));
111	>	assertEquals(-4,a.get(this));
112	>	assertTrue(a.compareAndSet(this,-4,7));
113	>	assertEquals(7,a.get(this));
114		}
115
92	–
116		/**
117		* compareAndSet in one thread enables another waiting for value
118		* to succeed
119		*/
120	<	public void testCompareAndSetInMultipleThreads() {
120	>	public void testCompareAndSetInMultipleThreads() throws Exception {
121		x = 1;
122	<	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
123	<
124	<	Thread t = new Thread(new Runnable() {
125	<	public void run() {
126	<	while(!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) Thread.yield();
104	<	}});
105	<	try {
106	<	t.start();
107	<	assertTrue(a.compareAndSet(this, 1, 2));
108	<	t.join(LONG_DELAY_MS);
109	<	assertFalse(t.isAlive());
110	<	assertEquals(a.get(this), 3);
111	<	}
112	<	catch(Exception e) {
113	<	unexpectedException();
122	>	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a;
123	>	try {
124	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
125	>	} catch (RuntimeException ok) {
126	>	return;
127		}
128	+
129	+	Thread t = new Thread(new CheckedRunnable() {
130	+	public void realRun() {
131	+	while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3))
132	+	Thread.yield();
133	+	}});
134	+
135	+	t.start();
136	+	assertTrue(a.compareAndSet(this, 1, 2));
137	+	t.join(LONG_DELAY_MS);
138	+	assertFalse(t.isAlive());
139	+	assertEquals(a.get(this), 3);
140		}
141
142		/**
143		* repeated weakCompareAndSet succeeds in changing value when equal
144	<	* to expected
144	>	* to expected
145		*/
146	<	public void testWeakCompareAndSet(){
147	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
146	>	public void testWeakCompareAndSet() {
147	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
148	>	try {
149	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
150	>	} catch (RuntimeException ok) {
151	>	return;
152	>	}
153		x = 1;
154	<	while(!a.weakCompareAndSet(this,1,2));
155	<	while(!a.weakCompareAndSet(this,2,-4));
156	<	assertEquals(-4,a.get(this));
157	<	while(!a.weakCompareAndSet(this,-4,7));
158	<	assertEquals(7,a.get(this));
154	>	while (!a.weakCompareAndSet(this,1,2));
155	>	while (!a.weakCompareAndSet(this,2,-4));
156	>	assertEquals(-4,a.get(this));
157	>	while (!a.weakCompareAndSet(this,-4,7));
158	>	assertEquals(7,a.get(this));
159		}
160
161		/**
162	<	*  getAndSet returns previous value and sets to given value
162	>	* getAndSet returns previous value and sets to given value
163		*/
164	<	public void testGetAndSet(){
165	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
164	>	public void testGetAndSet() {
165	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
166	>	try {
167	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
168	>	} catch (RuntimeException ok) {
169	>	return;
170	>	}
171		x = 1;
172	<	assertEquals(1,a.getAndSet(this, 0));
173	<	assertEquals(0,a.getAndSet(this,-10));
174	<	assertEquals(-10,a.getAndSet(this,1));
172	>	assertEquals(1,a.getAndSet(this, 0));
173	>	assertEquals(0,a.getAndSet(this,-10));
174	>	assertEquals(-10,a.getAndSet(this,1));
175		}
176
177		/**
178		* getAndAdd returns previous value and adds given value
179		*/
180	<	public void testGetAndAdd(){
181	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
180	>	public void testGetAndAdd() {
181	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
182	>	try {
183	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
184	>	} catch (RuntimeException ok) {
185	>	return;
186	>	}
187		x = 1;
188	<	assertEquals(1,a.getAndAdd(this,2));
189	<	assertEquals(3,a.get(this));
190	<	assertEquals(3,a.getAndAdd(this,-4));
191	<	assertEquals(-1,a.get(this));
188	>	assertEquals(1,a.getAndAdd(this,2));
189	>	assertEquals(3,a.get(this));
190	>	assertEquals(3,a.getAndAdd(this,-4));
191	>	assertEquals(-1,a.get(this));
192		}
193
194		/**
195		* getAndDecrement returns previous value and decrements
196		*/
197	<	public void testGetAndDecrement(){
198	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
197	>	public void testGetAndDecrement() {
198	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
199	>	try {
200	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
201	>	} catch (RuntimeException ok) {
202	>	return;
203	>	}
204		x = 1;
205	<	assertEquals(1,a.getAndDecrement(this));
206	<	assertEquals(0,a.getAndDecrement(this));
207	<	assertEquals(-1,a.getAndDecrement(this));
205	>	assertEquals(1,a.getAndDecrement(this));
206	>	assertEquals(0,a.getAndDecrement(this));
207	>	assertEquals(-1,a.getAndDecrement(this));
208		}
209
210		/**
211		* getAndIncrement returns previous value and increments
212		*/
213	<	public void testGetAndIncrement(){
214	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
213	>	public void testGetAndIncrement() {
214	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
215	>	try {
216	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
217	>	} catch (RuntimeException ok) {
218	>	return;
219	>	}
220		x = 1;
221	<	assertEquals(1,a.getAndIncrement(this));
222	<	assertEquals(2,a.get(this));
223	<	a.set(this,-2);
224	<	assertEquals(-2,a.getAndIncrement(this));
225	<	assertEquals(-1,a.getAndIncrement(this));
226	<	assertEquals(0,a.getAndIncrement(this));
227	<	assertEquals(1,a.get(this));
221	>	assertEquals(1,a.getAndIncrement(this));
222	>	assertEquals(2,a.get(this));
223	>	a.set(this,-2);
224	>	assertEquals(-2,a.getAndIncrement(this));
225	>	assertEquals(-1,a.getAndIncrement(this));
226	>	assertEquals(0,a.getAndIncrement(this));
227	>	assertEquals(1,a.get(this));
228		}
229
230		/**
231		* addAndGet adds given value to current, and returns current value
232		*/
233	<	public void testAddAndGet(){
234	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
233	>	public void testAddAndGet() {
234	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
235	>	try {
236	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
237	>	} catch (RuntimeException ok) {
238	>	return;
239	>	}
240		x = 1;
241	<	assertEquals(3,a.addAndGet(this,2));
242	<	assertEquals(3,a.get(this));
243	<	assertEquals(-1,a.addAndGet(this,-4));
244	<	assertEquals(-1,a.get(this));
241	>	assertEquals(3,a.addAndGet(this,2));
242	>	assertEquals(3,a.get(this));
243	>	assertEquals(-1,a.addAndGet(this,-4));
244	>	assertEquals(-1,a.get(this));
245		}
246
247		/**
248	<	*  decrementAndGet decrements and returns current value
248	>	* decrementAndGet decrements and returns current value
249		*/
250	<	public void testDecrementAndGet(){
251	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
250	>	public void testDecrementAndGet() {
251	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
252	>	try {
253	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
254	>	} catch (RuntimeException ok) {
255	>	return;
256	>	}
257		x = 1;
258	<	assertEquals(0,a.decrementAndGet(this));
259	<	assertEquals(-1,a.decrementAndGet(this));
260	<	assertEquals(-2,a.decrementAndGet(this));
261	<	assertEquals(-2,a.get(this));
258	>	assertEquals(0,a.decrementAndGet(this));
259	>	assertEquals(-1,a.decrementAndGet(this));
260	>	assertEquals(-2,a.decrementAndGet(this));
261	>	assertEquals(-2,a.get(this));
262		}
263
264		/**
265		* incrementAndGet increments and returns current value
266		*/
267	<	public void testIncrementAndGet(){
268	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a = AtomicLongFieldUpdater.newUpdater(getClass(), "x");
267	>	public void testIncrementAndGet() {
268	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
269	>	try {
270	>	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
271	>	} catch (RuntimeException ok) {
272	>	return;
273	>	}
274		x = 1;
275	<	assertEquals(2,a.incrementAndGet(this));
276	<	assertEquals(2,a.get(this));
277	<	a.set(this,-2);
278	<	assertEquals(-1,a.incrementAndGet(this));
279	<	assertEquals(0,a.incrementAndGet(this));
280	<	assertEquals(1,a.incrementAndGet(this));
281	<	assertEquals(1,a.get(this));
275	>	assertEquals(2,a.incrementAndGet(this));
276	>	assertEquals(2,a.get(this));
277	>	a.set(this,-2);
278	>	assertEquals(-1,a.incrementAndGet(this));
279	>	assertEquals(0,a.incrementAndGet(this));
280	>	assertEquals(1,a.incrementAndGet(this));
281	>	assertEquals(1,a.get(this));
282		}
283
284		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines