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

Comparing jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java (file contents):
Revision 1.8 by dl, Tue Jan 20 20:20:56 2004 UTC vs.
Revision 1.11 by jsr166, Mon Nov 16 04:57:10 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 26 | Line 26 | public class AtomicLongFieldUpdaterTest
26		* Construction with non-existent field throws RuntimeException
27		*/
28		public void testConstructor(){
29	<	try{
30	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
29	>	try {
30	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
31		a = AtomicLongFieldUpdater.newUpdater
32		(AtomicLongFieldUpdaterTest.class, "y");
33		shouldThrow();
#	Line 39 | Line 39 | public class AtomicLongFieldUpdaterTest
39		* construction with field not of given type throws RuntimeException
40		*/
41		public void testConstructor2(){
42	<	try{
43	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
42	>	try {
43	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
44		a = AtomicLongFieldUpdater.newUpdater
45		(AtomicLongFieldUpdaterTest.class, "z");
46		shouldThrow();
#	Line 52 | Line 52 | public class AtomicLongFieldUpdaterTest
52		* construction with non-volatile field throws RuntimeException
53		*/
54		public void testConstructor3(){
55	<	try{
56	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
55	>	try {
56	>	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
57		a = AtomicLongFieldUpdater.newUpdater
58		(AtomicLongFieldUpdaterTest.class, "w");
59		shouldThrow();
#	Line 78 | Line 78 | public class AtomicLongFieldUpdaterTest
78		assertEquals(2,a.get(this));
79		a.set(this,-3);
80		assertEquals(-3,a.get(this));
81	–
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		*/
#	Line 116 | Line 135 | public class AtomicLongFieldUpdaterTest
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();
#	Line 125 | Line 144 | public class AtomicLongFieldUpdaterTest
144		assertFalse(t.isAlive());
145		assertEquals(a.get(this), 3);
146		}
147	<	catch(Exception e) {
147	>	catch (Exception e) {
148		unexpectedException();
149		}
150		}
151
152		/**
153		* repeated weakCompareAndSet succeeds in changing value when equal
154	<	* to expected
154	>	* to expected
155		*/
156		public void testWeakCompareAndSet(){
157		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
#	Line 142 | Line 161 | public class AtomicLongFieldUpdaterTest
161		return;
162		}
163		x = 1;
164	<	while(!a.weakCompareAndSet(this,1,2));
165	<	while(!a.weakCompareAndSet(this,2,-4));
164	>	while (!a.weakCompareAndSet(this,1,2));
165	>	while (!a.weakCompareAndSet(this,2,-4));
166		assertEquals(-4,a.get(this));
167	<	while(!a.weakCompareAndSet(this,-4,7));
167	>	while (!a.weakCompareAndSet(this,-4,7));
168		assertEquals(7,a.get(this));
169		}
170

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