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

Comparing jsr166/src/test/tck/AtomicIntegerFieldUpdaterTest.java (file contents):
Revision 1.9 by dl, Wed May 25 14:27:37 2005 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 14 | Line 14 | public class AtomicIntegerFieldUpdaterTe
14		volatile int x = 0;
15		int w;
16		long z;
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 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		/**
#	Line 95 | Line 95 | public class AtomicIntegerFieldUpdaterTe
95		assertEquals(2,a.get(this));
96		a.lazySet(this,-3);
97		assertEquals(-3,a.get(this));
98	<
98	>
99		}
100
101		/**
#	Line 123 | Line 123 | public class AtomicIntegerFieldUpdaterTe
123		* compareAndSet in one thread enables another waiting for value
124		* to succeed
125		*/
126	<	public void testCompareAndSetInMultipleThreads() {
126	>	public void testCompareAndSetInMultipleThreads() throws Exception {
127		x = 1;
128		final AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest>a;
129		try {
#	Line 134 | 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();
141	<	assertTrue(a.compareAndSet(this, 1, 2));
142	<	t.join(LONG_DELAY_MS);
143	<	assertFalse(t.isAlive());
144	<	assertEquals(a.get(this), 3);
145	<	}
146	<	catch(Exception e) {
147	<	unexpectedException();
148	<	}
139	>
140	>	t.start();
141	>	assertTrue(a.compareAndSet(this, 1, 2));
142	>	t.join(LONG_DELAY_MS);
143	>	assertFalse(t.isAlive());
144	>	assertEquals(a.get(this), 3);
145		}
146
147		/**
148		* repeated weakCompareAndSet succeeds in changing value when equal
149	<	* to expected
149	>	* to expected
150		*/
151		public void testWeakCompareAndSet() {
152		AtomicIntegerFieldUpdater<AtomicIntegerFieldUpdaterTest> a;
#	Line 160 | Line 156 | public class AtomicIntegerFieldUpdaterTe
156		return;
157		}
158		x = 1;
159	<	while(!a.weakCompareAndSet(this,1,2));
160	<	while(!a.weakCompareAndSet(this,2,-4));
159	>	while (!a.weakCompareAndSet(this,1,2));
160	>	while (!a.weakCompareAndSet(this,2,-4));
161		assertEquals(-4,a.get(this));
162	<	while(!a.weakCompareAndSet(this,-4,7));
162	>	while (!a.weakCompareAndSet(this,-4,7));
163		assertEquals(7,a.get(this));
164		}
165

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