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Comparing jsr166/src/test/tck/AtomicReferenceFieldUpdaterTest.java (file contents):
Revision 1.5 by dl, Sat Oct 25 16:02:13 2003 UTC vs.
Revision 1.13 by jsr166, Mon Nov 16 05:30:07 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.*;
10		import junit.framework.*;
11		import java.util.*;
12
13	<	public class AtomicReferenceFieldUpdaterTest extends JSR166TestCase{
13	>	public class AtomicReferenceFieldUpdaterTest extends JSR166TestCase {
14		volatile Integer x = null;
15		Object z;
16		Integer 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 22 | Line 23 | public class AtomicReferenceFieldUpdater
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{
28	>	public void testConstructor() {
29	>	try {
30		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
31		a = AtomicReferenceFieldUpdater.newUpdater
32		(AtomicReferenceFieldUpdaterTest.class, Integer.class, "y");
#	Line 38 | Line 39 | public class AtomicReferenceFieldUpdater
39		/**
40		* construction with field not of given type throws RuntimeException
41		*/
42	<	public void testConstructor2(){
43	<	try{
42	>	public void testConstructor2() {
43	>	try {
44		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
45		a = AtomicReferenceFieldUpdater.newUpdater
46		(AtomicReferenceFieldUpdaterTest.class, Integer.class, "z");
#	Line 51 | Line 52 | public class AtomicReferenceFieldUpdater
52		/**
53		* Constructor with non-volatile field throws exception
54		*/
55	<	public void testConstructor3(){
56	<	try{
55	>	public void testConstructor3() {
56	>	try {
57		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
58		a = AtomicReferenceFieldUpdater.newUpdater
59		(AtomicReferenceFieldUpdaterTest.class, Integer.class, "w");
#	Line 64 | Line 65 | public class AtomicReferenceFieldUpdater
65		/**
66		*  get returns the last value set or assigned
67		*/
68	<	public void testGetSet(){
69	<	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
68	>	public void testGetSet() {
69	>	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
70	>	try {
71	>	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
72	>	} catch (RuntimeException ok) {
73	>	return;
74	>	}
75		x = one;
76		assertEquals(one,a.get(this));
77		a.set(this,two);
78		assertEquals(two,a.get(this));
79	<	a.set(this,-3);
80	<	assertEquals(-3,a.get(this));
75	<
79	>	a.set(this,m3);
80	>	assertEquals(m3,a.get(this));
81		}
82	+
83	+	/**
84	+	*  get returns the last value lazySet by same thread
85	+	*/
86	+	public void testGetLazySet() {
87	+	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
88	+	try {
89	+	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
90	+	} catch (RuntimeException ok) {
91	+	return;
92	+	}
93	+	x = one;
94	+	assertEquals(one,a.get(this));
95	+	a.lazySet(this,two);
96	+	assertEquals(two,a.get(this));
97	+	a.lazySet(this,m3);
98	+	assertEquals(m3,a.get(this));
99	+	}
100	+
101		/**
102		* compareAndSet succeeds in changing value if equal to expected else fails
103		*/
104	<	public void testCompareAndSet(){
105	<	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
104	>	public void testCompareAndSet() {
105	>	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
106	>	try {
107	>	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
108	>	} catch (RuntimeException ok) {
109	>	return;
110	>	}
111		x = one;
112		assertTrue(a.compareAndSet(this,one,two));
113		assertTrue(a.compareAndSet(this,two,m4));
#	Line 95 | Line 124 | public class AtomicReferenceFieldUpdater
124		*/
125		public void testCompareAndSetInMultipleThreads() {
126		x = one;
127	<	final AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
127	>	final AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
128	>	try {
129	>	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
130	>	} catch (RuntimeException ok) {
131	>	return;
132	>	}
133
134		Thread t = new Thread(new Runnable() {
135		public void run() {
136	<	while(!a.compareAndSet(AtomicReferenceFieldUpdaterTest.this, two, three)) Thread.yield();
136	>	while (!a.compareAndSet(AtomicReferenceFieldUpdaterTest.this, two, three)) Thread.yield();
137		}});
138		try {
139		t.start();
#	Line 108 | Line 142 | public class AtomicReferenceFieldUpdater
142		assertFalse(t.isAlive());
143		assertEquals(a.get(this), three);
144		}
145	<	catch(Exception e) {
145	>	catch (Exception e) {
146		unexpectedException();
147		}
148		}
149
150		/**
151		* repeated weakCompareAndSet succeeds in changing value when equal
152	<	* to expected
152	>	* to expected
153		*/
154	<	public void testWeakCompareAndSet(){
155	<	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
154	>	public void testWeakCompareAndSet() {
155	>	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
156	>	try {
157	>	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
158	>	} catch (RuntimeException ok) {
159	>	return;
160	>	}
161		x = one;
162	<	while(!a.weakCompareAndSet(this,one,two));
163	<	while(!a.weakCompareAndSet(this,two,m4));
162	>	while (!a.weakCompareAndSet(this,one,two));
163	>	while (!a.weakCompareAndSet(this,two,m4));
164		assertEquals(m4,a.get(this));
165	<	while(!a.weakCompareAndSet(this,m4,seven));
165	>	while (!a.weakCompareAndSet(this,m4,seven));
166		assertEquals(seven,a.get(this));
167		}
168
169		/**
170		* getAndSet returns previous value and sets to given value
171		*/
172	<	public void testGetAndSet(){
173	<	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
172	>	public void testGetAndSet() {
173	>	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
174	>	try {
175	>	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
176	>	} catch (RuntimeException ok) {
177	>	return;
178	>	}
179		x = one;
180		assertEquals(one,a.getAndSet(this, zero));
181		assertEquals(zero,a.getAndSet(this,m10));

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