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Comparing jsr166/src/test/tck/AtomicReferenceFieldUpdaterTest.java (file contents):
Revision 1.13 by jsr166, Mon Nov 16 05:30:07 2009 UTC vs.
Revision 1.22 by jsr166, Fri May 27 19:39:07 2011 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		*/
#	Line 31 | Line 31 | public class AtomicReferenceFieldUpdater
31		a = AtomicReferenceFieldUpdater.newUpdater
32		(AtomicReferenceFieldUpdaterTest.class, Integer.class, "y");
33		shouldThrow();
34	<	}
35	<	catch (RuntimeException rt) {}
34	>	} catch (RuntimeException success) {}
35		}
36
38	–
37		/**
38		* construction with field not of given type throws RuntimeException
39		*/
#	Line 45 | Line 43 | public class AtomicReferenceFieldUpdater
43		a = AtomicReferenceFieldUpdater.newUpdater
44		(AtomicReferenceFieldUpdaterTest.class, Integer.class, "z");
45		shouldThrow();
46	<	}
49	<	catch (RuntimeException rt) {}
46	>	} catch (RuntimeException success) {}
47		}
48
49		/**
#	Line 58 | Line 55 | public class AtomicReferenceFieldUpdater
55		a = AtomicReferenceFieldUpdater.newUpdater
56		(AtomicReferenceFieldUpdaterTest.class, Integer.class, "w");
57		shouldThrow();
58	<	}
62	<	catch (RuntimeException rt) {}
58	>	} catch (RuntimeException 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;
#	Line 73 | Line 69 | public class AtomicReferenceFieldUpdater
69		return;
70		}
71		x = one;
72	<	assertEquals(one,a.get(this));
73	<	a.set(this,two);
74	<	assertEquals(two,a.get(this));
75	<	a.set(this,m3);
76	<	assertEquals(m3,a.get(this));
72	>	assertSame(one,a.get(this));
73	>	a.set(this,two);
74	>	assertSame(two,a.get(this));
75	>	a.set(this,m3);
76	>	assertSame(m3,a.get(this));
77		}
78
79		/**
80	<	*  get returns the last value lazySet by same thread
80	>	* get returns the last value lazySet by same thread
81		*/
82		public void testGetLazySet() {
83		AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
#	Line 91 | Line 87 | public class AtomicReferenceFieldUpdater
87		return;
88		}
89		x = one;
90	<	assertEquals(one,a.get(this));
91	<	a.lazySet(this,two);
92	<	assertEquals(two,a.get(this));
93	<	a.lazySet(this,m3);
94	<	assertEquals(m3,a.get(this));
90	>	assertSame(one,a.get(this));
91	>	a.lazySet(this,two);
92	>	assertSame(two,a.get(this));
93	>	a.lazySet(this,m3);
94	>	assertSame(m3,a.get(this));
95		}
96
97		/**
#	Line 109 | Line 105 | public class AtomicReferenceFieldUpdater
105		return;
106		}
107		x = one;
108	<	assertTrue(a.compareAndSet(this,one,two));
109	<	assertTrue(a.compareAndSet(this,two,m4));
110	<	assertEquals(m4,a.get(this));
111	<	assertFalse(a.compareAndSet(this,m5,seven));
112	<	assertFalse((seven == a.get(this)));
113	<	assertTrue(a.compareAndSet(this,m4,seven));
114	<	assertEquals(seven,a.get(this));
108	>	assertTrue(a.compareAndSet(this, one, two));
109	>	assertTrue(a.compareAndSet(this, two, m4));
110	>	assertSame(m4, a.get(this));
111	>	assertFalse(a.compareAndSet(this, m5, seven));
112	>	assertFalse(seven == a.get(this));
113	>	assertTrue(a.compareAndSet(this, m4, seven));
114	>	assertSame(seven,a.get(this));
115		}
116
117		/**
118		* compareAndSet in one thread enables another waiting for value
119		* to succeed
120		*/
121	<	public void testCompareAndSetInMultipleThreads() {
121	>	public void testCompareAndSetInMultipleThreads() throws Exception {
122		x = one;
123		final AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
124		try {
#	Line 131 | Line 127 | public class AtomicReferenceFieldUpdater
127		return;
128		}
129
130	<	Thread t = new Thread(new Runnable() {
131	<	public void run() {
132	<	while (!a.compareAndSet(AtomicReferenceFieldUpdaterTest.this, two, three)) Thread.yield();
133	<	}});
134	<	try {
135	<	t.start();
136	<	assertTrue(a.compareAndSet(this, one, two));
137	<	t.join(LONG_DELAY_MS);
138	<	assertFalse(t.isAlive());
139	<	assertEquals(a.get(this), three);
140	<	}
145	<	catch (Exception e) {
146	<	unexpectedException();
147	<	}
130	>	Thread t = new Thread(new CheckedRunnable() {
131	>	public void realRun() {
132	>	while (!a.compareAndSet(AtomicReferenceFieldUpdaterTest.this, two, three))
133	>	Thread.yield();
134	>	}});
135	>
136	>	t.start();
137	>	assertTrue(a.compareAndSet(this, one, two));
138	>	t.join(LONG_DELAY_MS);
139	>	assertFalse(t.isAlive());
140	>	assertSame(a.get(this), three);
141		}
142
143		/**
#	Line 159 | Line 152 | public class AtomicReferenceFieldUpdater
152		return;
153		}
154		x = one;
155	<	while (!a.weakCompareAndSet(this,one,two));
156	<	while (!a.weakCompareAndSet(this,two,m4));
157	<	assertEquals(m4,a.get(this));
158	<	while (!a.weakCompareAndSet(this,m4,seven));
159	<	assertEquals(seven,a.get(this));
155	>	while (!a.weakCompareAndSet(this,one,two));
156	>	while (!a.weakCompareAndSet(this,two,m4));
157	>	assertSame(m4,a.get(this));
158	>	while (!a.weakCompareAndSet(this,m4,seven));
159	>	assertSame(seven,a.get(this));
160		}
161
162		/**
#	Line 177 | Line 170 | public class AtomicReferenceFieldUpdater
170		return;
171		}
172		x = one;
173	<	assertEquals(one,a.getAndSet(this, zero));
174	<	assertEquals(zero,a.getAndSet(this,m10));
175	<	assertEquals(m10,a.getAndSet(this,1));
173	>	assertSame(one,a.getAndSet(this, zero));
174	>	assertSame(zero,a.getAndSet(this,m10));
175	>	assertSame(m10,a.getAndSet(this,1));
176		}
177
178		}

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