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Comparing jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java (file contents):
Revision 1.16 by jsr166, Sat Nov 21 17:38:05 2009 UTC vs.
Revision 1.24 by jsr166, Mon Apr 1 20:58:58 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.AtomicLongFieldUpdater;
11
12		public class AtomicLongFieldUpdaterTest extends JSR166TestCase {
13		volatile long x = 0;
#	Line 22 | Line 21 | public class AtomicLongFieldUpdaterTest
21		return new TestSuite(AtomicLongFieldUpdaterTest.class);
22		}
23
24	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> updaterFor(String fieldName) {
25	+	return AtomicLongFieldUpdater.newUpdater
26	+	(AtomicLongFieldUpdaterTest.class, fieldName);
27	+	}
28	+
29		/**
30		* Construction with non-existent field throws RuntimeException
31		*/
32		public void testConstructor() {
33		try {
34	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
31	<	a = AtomicLongFieldUpdater.newUpdater
32	<	(AtomicLongFieldUpdaterTest.class, "y");
34	>	updaterFor("y");
35		shouldThrow();
36		} catch (RuntimeException success) {}
37		}
#	Line 39 | Line 41 | public class AtomicLongFieldUpdaterTest
41		*/
42		public void testConstructor2() {
43		try {
44	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
43	<	a = AtomicLongFieldUpdater.newUpdater
44	<	(AtomicLongFieldUpdaterTest.class, "z");
44	>	updaterFor("z");
45		shouldThrow();
46		} catch (RuntimeException success) {}
47		}
#	Line 51 | Line 51 | public class AtomicLongFieldUpdaterTest
51		*/
52		public void testConstructor3() {
53		try {
54	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
55	<	a = AtomicLongFieldUpdater.newUpdater
56	<	(AtomicLongFieldUpdaterTest.class, "w");
54	>	updaterFor("w");
55		shouldThrow();
56		} catch (RuntimeException success) {}
57		}
58
59		/**
60	<	*  get returns the last value set or assigned
60	>	* get returns the last value set or assigned
61		*/
62		public void testGetSet() {
63		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
64	<	try {
67	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
68	<	} catch (RuntimeException ok) {
69	<	return;
70	<	}
64	>	a = updaterFor("x");
65		x = 1;
66	<	assertEquals(1,a.get(this));
67	<	a.set(this,2);
68	<	assertEquals(2,a.get(this));
69	<	a.set(this,-3);
70	<	assertEquals(-3,a.get(this));
66	>	assertEquals(1, a.get(this));
67	>	a.set(this, 2);
68	>	assertEquals(2, a.get(this));
69	>	a.set(this, -3);
70	>	assertEquals(-3, a.get(this));
71		}
72
73		/**
74	<	*  get returns the last value lazySet by same thread
74	>	* get returns the last value lazySet by same thread
75		*/
76		public void testGetLazySet() {
77		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
78	<	try {
79	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
80	<	} catch (RuntimeException ok) {
81	<	return;
82	<	}
83	<	x = 1;
84	<	assertEquals(1,a.get(this));
91	<	a.lazySet(this,2);
92	<	assertEquals(2,a.get(this));
93	<	a.lazySet(this,-3);
94	<	assertEquals(-3,a.get(this));
78	>	a = updaterFor("x");
79	>	x = 1;
80	>	assertEquals(1, a.get(this));
81	>	a.lazySet(this, 2);
82	>	assertEquals(2, a.get(this));
83	>	a.lazySet(this, -3);
84	>	assertEquals(-3, a.get(this));
85		}
86
97	–
87		/**
88		* compareAndSet succeeds in changing value if equal to expected else fails
89		*/
90		public void testCompareAndSet() {
91		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
92	<	try {
93	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
94	<	} catch (RuntimeException ok) {
95	<	return;
96	<	}
97	<	x = 1;
98	<	assertTrue(a.compareAndSet(this,1,2));
99	<	assertTrue(a.compareAndSet(this,2,-4));
100	<	assertEquals(-4,a.get(this));
112	<	assertFalse(a.compareAndSet(this,-5,7));
113	<	assertFalse((7 == a.get(this)));
114	<	assertTrue(a.compareAndSet(this,-4,7));
115	<	assertEquals(7,a.get(this));
92	>	a = updaterFor("x");
93	>	x = 1;
94	>	assertTrue(a.compareAndSet(this, 1, 2));
95	>	assertTrue(a.compareAndSet(this, 2, -4));
96	>	assertEquals(-4, a.get(this));
97	>	assertFalse(a.compareAndSet(this, -5, 7));
98	>	assertEquals(-4, a.get(this));
99	>	assertTrue(a.compareAndSet(this, -4, 7));
100	>	assertEquals(7, a.get(this));
101		}
102
118	–
103		/**
104		* compareAndSet in one thread enables another waiting for value
105		* to succeed
106		*/
107		public void testCompareAndSetInMultipleThreads() throws Exception {
108		x = 1;
109	<	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a;
110	<	try {
127	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
128	<	} catch (RuntimeException ok) {
129	<	return;
130	<	}
109	>	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
110	>	a = updaterFor("x");
111
112		Thread t = new Thread(new CheckedRunnable() {
113		public void realRun() {
#	Line 139 | Line 119 | public class AtomicLongFieldUpdaterTest
119		assertTrue(a.compareAndSet(this, 1, 2));
120		t.join(LONG_DELAY_MS);
121		assertFalse(t.isAlive());
122	<	assertEquals(a.get(this), 3);
122	>	assertEquals(3, a.get(this));
123		}
124
125		/**
#	Line 148 | Line 128 | public class AtomicLongFieldUpdaterTest
128		*/
129		public void testWeakCompareAndSet() {
130		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
131	<	try {
152	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
153	<	} catch (RuntimeException ok) {
154	<	return;
155	<	}
131	>	a = updaterFor("x");
132		x = 1;
133	<	while (!a.weakCompareAndSet(this,1,2));
134	<	while (!a.weakCompareAndSet(this,2,-4));
135	<	assertEquals(-4,a.get(this));
136	<	while (!a.weakCompareAndSet(this,-4,7));
137	<	assertEquals(7,a.get(this));
133	>	while (!a.weakCompareAndSet(this, 1, 2));
134	>	while (!a.weakCompareAndSet(this, 2, -4));
135	>	assertEquals(-4, a.get(this));
136	>	while (!a.weakCompareAndSet(this, -4, 7));
137	>	assertEquals(7, a.get(this));
138		}
139
140		/**
141	<	*  getAndSet returns previous value and sets to given value
141	>	* getAndSet returns previous value and sets to given value
142		*/
143		public void testGetAndSet() {
144		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
145	<	try {
146	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
147	<	} catch (RuntimeException ok) {
148	<	return;
149	<	}
174	<	x = 1;
175	<	assertEquals(1,a.getAndSet(this, 0));
176	<	assertEquals(0,a.getAndSet(this,-10));
177	<	assertEquals(-10,a.getAndSet(this,1));
145	>	a = updaterFor("x");
146	>	x = 1;
147	>	assertEquals(1, a.getAndSet(this, 0));
148	>	assertEquals(0, a.getAndSet(this, -10));
149	>	assertEquals(-10, a.getAndSet(this, 1));
150		}
151
152		/**
#	Line 182 | Line 154 | public class AtomicLongFieldUpdaterTest
154		*/
155		public void testGetAndAdd() {
156		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
157	<	try {
158	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
159	<	} catch (RuntimeException ok) {
160	<	return;
161	<	}
162	<	x = 1;
191	<	assertEquals(1,a.getAndAdd(this,2));
192	<	assertEquals(3,a.get(this));
193	<	assertEquals(3,a.getAndAdd(this,-4));
194	<	assertEquals(-1,a.get(this));
157	>	a = updaterFor("x");
158	>	x = 1;
159	>	assertEquals(1, a.getAndAdd(this, 2));
160	>	assertEquals(3, a.get(this));
161	>	assertEquals(3, a.getAndAdd(this, -4));
162	>	assertEquals(-1, a.get(this));
163		}
164
165		/**
#	Line 199 | Line 167 | public class AtomicLongFieldUpdaterTest
167		*/
168		public void testGetAndDecrement() {
169		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
170	<	try {
171	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
172	<	} catch (RuntimeException ok) {
173	<	return;
174	<	}
207	<	x = 1;
208	<	assertEquals(1,a.getAndDecrement(this));
209	<	assertEquals(0,a.getAndDecrement(this));
210	<	assertEquals(-1,a.getAndDecrement(this));
170	>	a = updaterFor("x");
171	>	x = 1;
172	>	assertEquals(1, a.getAndDecrement(this));
173	>	assertEquals(0, a.getAndDecrement(this));
174	>	assertEquals(-1, a.getAndDecrement(this));
175		}
176
177		/**
#	Line 215 | Line 179 | public class AtomicLongFieldUpdaterTest
179		*/
180		public void testGetAndIncrement() {
181		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
182	<	try {
183	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
184	<	} catch (RuntimeException ok) {
185	<	return;
186	<	}
187	<	x = 1;
188	<	assertEquals(1,a.getAndIncrement(this));
189	<	assertEquals(2,a.get(this));
190	<	a.set(this,-2);
227	<	assertEquals(-2,a.getAndIncrement(this));
228	<	assertEquals(-1,a.getAndIncrement(this));
229	<	assertEquals(0,a.getAndIncrement(this));
230	<	assertEquals(1,a.get(this));
182	>	a = updaterFor("x");
183	>	x = 1;
184	>	assertEquals(1, a.getAndIncrement(this));
185	>	assertEquals(2, a.get(this));
186	>	a.set(this, -2);
187	>	assertEquals(-2, a.getAndIncrement(this));
188	>	assertEquals(-1, a.getAndIncrement(this));
189	>	assertEquals(0, a.getAndIncrement(this));
190	>	assertEquals(1, a.get(this));
191		}
192
193		/**
#	Line 235 | Line 195 | public class AtomicLongFieldUpdaterTest
195		*/
196		public void testAddAndGet() {
197		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
198	<	try {
239	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
240	<	} catch (RuntimeException ok) {
241	<	return;
242	<	}
198	>	a = updaterFor("x");
199		x = 1;
200	<	assertEquals(3,a.addAndGet(this,2));
201	<	assertEquals(3,a.get(this));
202	<	assertEquals(-1,a.addAndGet(this,-4));
203	<	assertEquals(-1,a.get(this));
200	>	assertEquals(3, a.addAndGet(this, 2));
201	>	assertEquals(3, a.get(this));
202	>	assertEquals(-1, a.addAndGet(this, -4));
203	>	assertEquals(-1, a.get(this));
204		}
205
206		/**
207	<	*  decrementAndGet decrements and returns current value
207	>	* decrementAndGet decrements and returns current value
208		*/
209		public void testDecrementAndGet() {
210		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
211	<	try {
212	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
213	<	} catch (RuntimeException ok) {
214	<	return;
215	<	}
216	<	x = 1;
261	<	assertEquals(0,a.decrementAndGet(this));
262	<	assertEquals(-1,a.decrementAndGet(this));
263	<	assertEquals(-2,a.decrementAndGet(this));
264	<	assertEquals(-2,a.get(this));
211	>	a = updaterFor("x");
212	>	x = 1;
213	>	assertEquals(0, a.decrementAndGet(this));
214	>	assertEquals(-1, a.decrementAndGet(this));
215	>	assertEquals(-2, a.decrementAndGet(this));
216	>	assertEquals(-2, a.get(this));
217		}
218
219		/**
#	Line 269 | Line 221 | public class AtomicLongFieldUpdaterTest
221		*/
222		public void testIncrementAndGet() {
223		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
224	<	try {
225	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
226	<	} catch (RuntimeException ok) {
227	<	return;
228	<	}
229	<	x = 1;
230	<	assertEquals(2,a.incrementAndGet(this));
231	<	assertEquals(2,a.get(this));
232	<	a.set(this,-2);
281	<	assertEquals(-1,a.incrementAndGet(this));
282	<	assertEquals(0,a.incrementAndGet(this));
283	<	assertEquals(1,a.incrementAndGet(this));
284	<	assertEquals(1,a.get(this));
224	>	a = updaterFor("x");
225	>	x = 1;
226	>	assertEquals(2, a.incrementAndGet(this));
227	>	assertEquals(2, a.get(this));
228	>	a.set(this, -2);
229	>	assertEquals(-1, a.incrementAndGet(this));
230	>	assertEquals(0, a.incrementAndGet(this));
231	>	assertEquals(1, a.incrementAndGet(this));
232	>	assertEquals(1, a.get(this));
233		}
234
235		}

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