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

Comparing jsr166/src/test/tck/AtomicIntegerFieldUpdaterTest.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 25 | Line 25 | public class AtomicIntegerFieldUpdaterTe
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 38 | 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 51 | 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 76 | Line 76 | public class AtomicIntegerFieldUpdaterTe
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		*/
#	Line 114 | Line 134 | public class AtomicIntegerFieldUpdaterTe
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();
#	Line 123 | Line 143 | public class AtomicIntegerFieldUpdaterTe
143		assertFalse(t.isAlive());
144		assertEquals(a.get(this), 3);
145		}
146	<	catch(Exception e) {
146	>	catch (Exception e) {
147		unexpectedException();
148		}
149		}
150
151		/**
152		* repeated weakCompareAndSet succeeds in changing value when equal
153	<	* to expected
153	>	* to expected
154		*/
155		public void testWeakCompareAndSet() {
156		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
#	Line 140 | Line 160 | public class AtomicIntegerFieldUpdaterTe
160		return;
161		}
162		x = 1;
163	<	while(!a.weakCompareAndSet(this,1,2));
164	<	while(!a.weakCompareAndSet(this,2,-4));
163	>	while (!a.weakCompareAndSet(this,1,2));
164	>	while (!a.weakCompareAndSet(this,2,-4));
165		assertEquals(-4,a.get(this));
166	<	while(!a.weakCompareAndSet(this,-4,7));
166	>	while (!a.weakCompareAndSet(this,-4,7));
167		assertEquals(7,a.get(this));
168		}
169

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