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

Comparing jsr166/src/test/tck/AtomicReferenceFieldUpdaterTest.java (file contents):
Revision 1.18 by jsr166, Tue Dec 1 09:56:28 2009 UTC vs.
Revision 1.27 by jsr166, Tue Apr 2 04:11:28 2013 UTC

#	Line 1 | Line 1
1		/*
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
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–	import java.util.concurrent.atomic.*;
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
11
12		public class AtomicReferenceFieldUpdaterTest extends JSR166TestCase {
13		volatile Integer x = null;
#	Line 22 | Line 21 | public class AtomicReferenceFieldUpdater
21		return new TestSuite(AtomicReferenceFieldUpdaterTest.class);
22		}
23
24	+	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer> updaterFor(String fieldName) {
25	+	return AtomicReferenceFieldUpdater.newUpdater
26	+	(AtomicReferenceFieldUpdaterTest.class, Integer.class, fieldName);
27	+	}
28	+
29		/**
30		* Construction with non-existent field throws RuntimeException
31		*/
32		public void testConstructor() {
33		try {
34	<	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
31	<	a = AtomicReferenceFieldUpdater.newUpdater
32	<	(AtomicReferenceFieldUpdaterTest.class, Integer.class, "y");
34	>	updaterFor("y");
35		shouldThrow();
36	<	} catch (RuntimeException success) {}
36	>	} catch (RuntimeException success) {
37	>	assertTrue(success.getCause() != null);
38	>	}
39		}
40
37	–
41		/**
42		* construction with field not of given type throws RuntimeException
43		*/
44		public void testConstructor2() {
45		try {
46	<	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
44	<	a = AtomicReferenceFieldUpdater.newUpdater
45	<	(AtomicReferenceFieldUpdaterTest.class, Integer.class, "z");
46	>	updaterFor("z");
47		shouldThrow();
48		} catch (RuntimeException success) {}
49		}
50
51		/**
52	<	* Constructor with non-volatile field throws exception
52	>	* Constructor with non-volatile field throws IllegalArgumentException
53		*/
54		public void testConstructor3() {
55		try {
56	<	AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
56	<	a = AtomicReferenceFieldUpdater.newUpdater
57	<	(AtomicReferenceFieldUpdaterTest.class, Integer.class, "w");
56	>	updaterFor("w");
57		shouldThrow();
58	<	} catch (RuntimeException success) {}
58	>	} catch (IllegalArgumentException success) {}
59		}
60
61		/**
62	<	*  get returns the last value set or assigned
62	>	* get returns the last value set or assigned
63		*/
64		public void testGetSet() {
65		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
66	<	try {
68	<	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
69	<	} catch (RuntimeException ok) {
70	<	return;
71	<	}
66	>	a = updaterFor("x");
67		x = one;
68	<	assertSame(one,a.get(this));
69	<	a.set(this,two);
70	<	assertSame(two,a.get(this));
71	<	a.set(this,m3);
72	<	assertSame(m3,a.get(this));
68	>	assertSame(one, a.get(this));
69	>	a.set(this, two);
70	>	assertSame(two, a.get(this));
71	>	a.set(this, m3);
72	>	assertSame(m3, a.get(this));
73		}
74
75		/**
76	<	*  get returns the last value lazySet by same thread
76	>	* get returns the last value lazySet by same thread
77		*/
78		public void testGetLazySet() {
79		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
80	<	try {
86	<	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
87	<	} catch (RuntimeException ok) {
88	<	return;
89	<	}
80	>	a = updaterFor("x");
81		x = one;
82	<	assertSame(one,a.get(this));
83	<	a.lazySet(this,two);
84	<	assertSame(two,a.get(this));
85	<	a.lazySet(this,m3);
86	<	assertSame(m3,a.get(this));
82	>	assertSame(one, a.get(this));
83	>	a.lazySet(this, two);
84	>	assertSame(two, a.get(this));
85	>	a.lazySet(this, m3);
86	>	assertSame(m3, a.get(this));
87		}
88
89		/**
#	Line 100 | Line 91 | public class AtomicReferenceFieldUpdater
91		*/
92		public void testCompareAndSet() {
93		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
94	<	try {
104	<	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
105	<	} catch (RuntimeException ok) {
106	<	return;
107	<	}
94	>	a = updaterFor("x");
95		x = one;
96	<	assertTrue(a.compareAndSet(this,one,two));
97	<	assertTrue(a.compareAndSet(this,two,m4));
98	<	assertSame(m4,a.get(this));
99	<	assertFalse(a.compareAndSet(this,m5,seven));
96	>	assertTrue(a.compareAndSet(this, one, two));
97	>	assertTrue(a.compareAndSet(this, two, m4));
98	>	assertSame(m4, a.get(this));
99	>	assertFalse(a.compareAndSet(this, m5, seven));
100		assertFalse(seven == a.get(this));
101	<	assertTrue(a.compareAndSet(this,m4,seven));
102	<	assertSame(seven,a.get(this));
101	>	assertTrue(a.compareAndSet(this, m4, seven));
102	>	assertSame(seven, a.get(this));
103		}
104
105		/**
#	Line 122 | Line 109 | public class AtomicReferenceFieldUpdater
109		public void testCompareAndSetInMultipleThreads() throws Exception {
110		x = one;
111		final AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
112	<	try {
126	<	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
127	<	} catch (RuntimeException ok) {
128	<	return;
129	<	}
112	>	a = updaterFor("x");
113
114		Thread t = new Thread(new CheckedRunnable() {
115		public void realRun() {
#	Line 138 | Line 121 | public class AtomicReferenceFieldUpdater
121		assertTrue(a.compareAndSet(this, one, two));
122		t.join(LONG_DELAY_MS);
123		assertFalse(t.isAlive());
124	<	assertSame(a.get(this), three);
124	>	assertSame(three, a.get(this));
125		}
126
127		/**
#	Line 147 | Line 130 | public class AtomicReferenceFieldUpdater
130		*/
131		public void testWeakCompareAndSet() {
132		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
133	<	try {
151	<	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
152	<	} catch (RuntimeException ok) {
153	<	return;
154	<	}
133	>	a = updaterFor("x");
134		x = one;
135	<	while (!a.weakCompareAndSet(this,one,two));
136	<	while (!a.weakCompareAndSet(this,two,m4));
137	<	assertSame(m4,a.get(this));
138	<	while (!a.weakCompareAndSet(this,m4,seven));
139	<	assertSame(seven,a.get(this));
135	>	while (!a.weakCompareAndSet(this, one, two));
136	>	while (!a.weakCompareAndSet(this, two, m4));
137	>	assertSame(m4, a.get(this));
138	>	while (!a.weakCompareAndSet(this, m4, seven));
139	>	assertSame(seven, a.get(this));
140		}
141
142		/**
#	Line 165 | Line 144 | public class AtomicReferenceFieldUpdater
144		*/
145		public void testGetAndSet() {
146		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
147	<	try {
169	<	a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
170	<	} catch (RuntimeException ok) {
171	<	return;
172	<	}
147	>	a = updaterFor("x");
148		x = one;
149	<	assertSame(one,a.getAndSet(this, zero));
150	<	assertSame(zero,a.getAndSet(this,m10));
151	<	assertSame(m10,a.getAndSet(this,1));
149	>	assertSame(one, a.getAndSet(this, zero));
150	>	assertSame(zero, a.getAndSet(this, m10));
151	>	assertSame(m10, a.getAndSet(this, 1));
152		}
153
154		}

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