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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 1.31 by jsr166, Mon Nov 9 07:54:28 2015 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.*;
10	<	import junit.framework.*;
11	<	import java.util.*;
9	>	import java.util.concurrent.atomic.AtomicLongFieldUpdater;
10	>
11	>	import junit.framework.Test;
12	>	import junit.framework.TestSuite;
13
14		public class AtomicLongFieldUpdaterTest extends JSR166TestCase {
15		volatile long x = 0;
16	<	int z;
16	>	protected volatile long protectedField;
17	>	private volatile long privateField;
18		long w;
19	<
19	>	float z;
20		public static void main(String[] args) {
21	<	junit.textui.TestRunner.run(suite());
21	>	main(suite(), args);
22		}
23		public static Test suite() {
24		return new TestSuite(AtomicLongFieldUpdaterTest.class);
25		}
26
27	+	// for testing subclass access
28	+	static class AtomicLongFieldUpdaterTestSubclass extends AtomicLongFieldUpdaterTest {
29	+	public void checkPrivateAccess() {
30	+	try {
31	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a =
32	+	AtomicLongFieldUpdater.newUpdater
33	+	(AtomicLongFieldUpdaterTest.class, "privateField");
34	+	shouldThrow();
35	+	} catch (RuntimeException success) {
36	+	assertNotNull(success.getCause());
37	+	}
38	+	}
39	+
40	+	public void checkCompareAndSetProtectedSub() {
41	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
42	+	a = updaterFor("protectedField");
43	+	protectedField = 1;
44	+	assertTrue(a.compareAndSet(this, 1, 2));
45	+	assertTrue(a.compareAndSet(this, 2, -4));
46	+	assertEquals(-4, a.get(this));
47	+	assertFalse(a.compareAndSet(this, -5, 7));
48	+	assertEquals(-4, a.get(this));
49	+	assertTrue(a.compareAndSet(this, -4, 7));
50	+	assertEquals(7, a.get(this));
51	+	}
52	+	}
53	+
54	+	static class UnrelatedClass {
55	+	public void checkPackageAccess(AtomicLongFieldUpdaterTest obj) {
56	+	obj.x = 72L;
57	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a =
58	+	AtomicLongFieldUpdater.newUpdater
59	+	(AtomicLongFieldUpdaterTest.class, "x");
60	+	assertEquals(72L, a.get(obj));
61	+	assertTrue(a.compareAndSet(obj, 72L, 73L));
62	+	assertEquals(73L, a.get(obj));
63	+	}
64	+
65	+	public void checkPrivateAccess(AtomicLongFieldUpdaterTest obj) {
66	+	try {
67	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a =
68	+	AtomicLongFieldUpdater.newUpdater
69	+	(AtomicLongFieldUpdaterTest.class, "privateField");
70	+	throw new AssertionError("should throw");
71	+	} catch (RuntimeException success) {
72	+	assertNotNull(success.getCause());
73	+	}
74	+	}
75	+	}
76	+
77	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> updaterFor(String fieldName) {
78	+	return AtomicLongFieldUpdater.newUpdater
79	+	(AtomicLongFieldUpdaterTest.class, fieldName);
80	+	}
81	+
82		/**
83		* Construction with non-existent field throws RuntimeException
84		*/
85		public void testConstructor() {
86		try {
87	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
31	<	a = AtomicLongFieldUpdater.newUpdater
32	<	(AtomicLongFieldUpdaterTest.class, "y");
87	>	updaterFor("y");
88		shouldThrow();
89	<	} catch (RuntimeException success) {}
89	>	} catch (RuntimeException success) {
90	>	assertNotNull(success.getCause());
91	>	}
92		}
93
94		/**
95	<	* construction with field not of given type throws RuntimeException
95	>	* construction with field not of given type throws IllegalArgumentException
96		*/
97		public void testConstructor2() {
98		try {
99	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
43	<	a = AtomicLongFieldUpdater.newUpdater
44	<	(AtomicLongFieldUpdaterTest.class, "z");
99	>	updaterFor("z");
100		shouldThrow();
101	<	} catch (RuntimeException success) {}
101	>	} catch (IllegalArgumentException success) {}
102		}
103
104		/**
105	<	* construction with non-volatile field throws RuntimeException
105	>	* construction with non-volatile field throws IllegalArgumentException
106		*/
107		public void testConstructor3() {
108		try {
109	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
55	<	a = AtomicLongFieldUpdater.newUpdater
56	<	(AtomicLongFieldUpdaterTest.class, "w");
109	>	updaterFor("w");
110		shouldThrow();
111	<	} catch (RuntimeException success) {}
111	>	} catch (IllegalArgumentException success) {}
112		}
113
114		/**
115	<	*  get returns the last value set or assigned
115	>	* construction using private field from subclass throws RuntimeException
116	>	*/
117	>	public void testPrivateFieldInSubclass() {
118	>	AtomicLongFieldUpdaterTestSubclass s =
119	>	new AtomicLongFieldUpdaterTestSubclass();
120	>	s.checkPrivateAccess();
121	>	}
122	>
123	>	/**
124	>	* construction from unrelated class; package access is allowed,
125	>	* private access is not
126	>	*/
127	>	public void testUnrelatedClassAccess() {
128	>	new UnrelatedClass().checkPackageAccess(this);
129	>	new UnrelatedClass().checkPrivateAccess(this);
130	>	}
131	>
132	>	/**
133	>	* get returns the last value set or assigned
134		*/
135		public void testGetSet() {
136		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
137	<	try {
67	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
68	<	} catch (RuntimeException ok) {
69	<	return;
70	<	}
137	>	a = updaterFor("x");
138		x = 1;
139	<	assertEquals(1,a.get(this));
140	<	a.set(this,2);
141	<	assertEquals(2,a.get(this));
142	<	a.set(this,-3);
143	<	assertEquals(-3,a.get(this));
139	>	assertEquals(1, a.get(this));
140	>	a.set(this, 2);
141	>	assertEquals(2, a.get(this));
142	>	a.set(this, -3);
143	>	assertEquals(-3, a.get(this));
144		}
145
146		/**
147	<	*  get returns the last value lazySet by same thread
147	>	* get returns the last value lazySet by same thread
148		*/
149		public void testGetLazySet() {
150		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
151	<	try {
85	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
86	<	} catch (RuntimeException ok) {
87	<	return;
88	<	}
151	>	a = updaterFor("x");
152		x = 1;
153	<	assertEquals(1,a.get(this));
154	<	a.lazySet(this,2);
155	<	assertEquals(2,a.get(this));
156	<	a.lazySet(this,-3);
157	<	assertEquals(-3,a.get(this));
153	>	assertEquals(1, a.get(this));
154	>	a.lazySet(this, 2);
155	>	assertEquals(2, a.get(this));
156	>	a.lazySet(this, -3);
157	>	assertEquals(-3, a.get(this));
158		}
159
97	–
160		/**
161		* compareAndSet succeeds in changing value if equal to expected else fails
162		*/
163		public void testCompareAndSet() {
164		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
165	<	try {
104	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
105	<	} catch (RuntimeException ok) {
106	<	return;
107	<	}
165	>	a = updaterFor("x");
166		x = 1;
167	<	assertTrue(a.compareAndSet(this,1,2));
168	<	assertTrue(a.compareAndSet(this,2,-4));
169	<	assertEquals(-4,a.get(this));
170	<	assertFalse(a.compareAndSet(this,-5,7));
171	<	assertFalse((7 == a.get(this)));
172	<	assertTrue(a.compareAndSet(this,-4,7));
173	<	assertEquals(7,a.get(this));
167	>	assertTrue(a.compareAndSet(this, 1, 2));
168	>	assertTrue(a.compareAndSet(this, 2, -4));
169	>	assertEquals(-4, a.get(this));
170	>	assertFalse(a.compareAndSet(this, -5, 7));
171	>	assertEquals(-4, a.get(this));
172	>	assertTrue(a.compareAndSet(this, -4, 7));
173	>	assertEquals(7, a.get(this));
174		}
175
176	+	/**
177	+	* compareAndSet succeeds in changing protected field value if
178	+	* equal to expected else fails
179	+	*/
180	+	public void testCompareAndSetProtected() {
181	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
182	+	a = updaterFor("protectedField");
183	+	protectedField = 1;
184	+	assertTrue(a.compareAndSet(this, 1, 2));
185	+	assertTrue(a.compareAndSet(this, 2, -4));
186	+	assertEquals(-4, a.get(this));
187	+	assertFalse(a.compareAndSet(this, -5, 7));
188	+	assertEquals(-4, a.get(this));
189	+	assertTrue(a.compareAndSet(this, -4, 7));
190	+	assertEquals(7, a.get(this));
191	+	}
192	+
193	+	/**
194	+	* compareAndSet succeeds in changing protected field value if
195	+	* equal to expected else fails
196	+	*/
197	+	public void testCompareAndSetProtectedInSubclass() {
198	+	AtomicLongFieldUpdaterTestSubclass s =
199	+	new AtomicLongFieldUpdaterTestSubclass();
200	+	s.checkCompareAndSetProtectedSub();
201	+	}
202
203		/**
204		* compareAndSet in one thread enables another waiting for value
#	Line 122 | Line 206 | public class AtomicLongFieldUpdaterTest
206		*/
207		public void testCompareAndSetInMultipleThreads() throws Exception {
208		x = 1;
209	<	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a;
210	<	try {
127	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
128	<	} catch (RuntimeException ok) {
129	<	return;
130	<	}
209	>	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
210	>	a = updaterFor("x");
211
212		Thread t = new Thread(new CheckedRunnable() {
213		public void realRun() {
#	Line 139 | Line 219 | public class AtomicLongFieldUpdaterTest
219		assertTrue(a.compareAndSet(this, 1, 2));
220		t.join(LONG_DELAY_MS);
221		assertFalse(t.isAlive());
222	<	assertEquals(a.get(this), 3);
222	>	assertEquals(3, a.get(this));
223		}
224
225		/**
#	Line 148 | Line 228 | public class AtomicLongFieldUpdaterTest
228		*/
229		public void testWeakCompareAndSet() {
230		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
231	<	try {
152	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
153	<	} catch (RuntimeException ok) {
154	<	return;
155	<	}
231	>	a = updaterFor("x");
232		x = 1;
233	<	while (!a.weakCompareAndSet(this,1,2));
234	<	while (!a.weakCompareAndSet(this,2,-4));
235	<	assertEquals(-4,a.get(this));
236	<	while (!a.weakCompareAndSet(this,-4,7));
237	<	assertEquals(7,a.get(this));
233	>	do {} while (!a.weakCompareAndSet(this, 1, 2));
234	>	do {} while (!a.weakCompareAndSet(this, 2, -4));
235	>	assertEquals(-4, a.get(this));
236	>	do {} while (!a.weakCompareAndSet(this, -4, 7));
237	>	assertEquals(7, a.get(this));
238		}
239
240		/**
241	<	*  getAndSet returns previous value and sets to given value
241	>	* getAndSet returns previous value and sets to given value
242		*/
243		public void testGetAndSet() {
244		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
245	<	try {
170	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
171	<	} catch (RuntimeException ok) {
172	<	return;
173	<	}
245	>	a = updaterFor("x");
246		x = 1;
247	<	assertEquals(1,a.getAndSet(this, 0));
248	<	assertEquals(0,a.getAndSet(this,-10));
249	<	assertEquals(-10,a.getAndSet(this,1));
247	>	assertEquals(1, a.getAndSet(this, 0));
248	>	assertEquals(0, a.getAndSet(this, -10));
249	>	assertEquals(-10, a.getAndSet(this, 1));
250		}
251
252		/**
#	Line 182 | Line 254 | public class AtomicLongFieldUpdaterTest
254		*/
255		public void testGetAndAdd() {
256		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
257	<	try {
186	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
187	<	} catch (RuntimeException ok) {
188	<	return;
189	<	}
257	>	a = updaterFor("x");
258		x = 1;
259	<	assertEquals(1,a.getAndAdd(this,2));
260	<	assertEquals(3,a.get(this));
261	<	assertEquals(3,a.getAndAdd(this,-4));
262	<	assertEquals(-1,a.get(this));
259	>	assertEquals(1, a.getAndAdd(this, 2));
260	>	assertEquals(3, a.get(this));
261	>	assertEquals(3, a.getAndAdd(this, -4));
262	>	assertEquals(-1, a.get(this));
263		}
264
265		/**
#	Line 199 | Line 267 | public class AtomicLongFieldUpdaterTest
267		*/
268		public void testGetAndDecrement() {
269		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
270	<	try {
203	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
204	<	} catch (RuntimeException ok) {
205	<	return;
206	<	}
270	>	a = updaterFor("x");
271		x = 1;
272	<	assertEquals(1,a.getAndDecrement(this));
273	<	assertEquals(0,a.getAndDecrement(this));
274	<	assertEquals(-1,a.getAndDecrement(this));
272	>	assertEquals(1, a.getAndDecrement(this));
273	>	assertEquals(0, a.getAndDecrement(this));
274	>	assertEquals(-1, a.getAndDecrement(this));
275		}
276
277		/**
#	Line 215 | Line 279 | public class AtomicLongFieldUpdaterTest
279		*/
280		public void testGetAndIncrement() {
281		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
282	<	try {
219	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
220	<	} catch (RuntimeException ok) {
221	<	return;
222	<	}
282	>	a = updaterFor("x");
283		x = 1;
284	<	assertEquals(1,a.getAndIncrement(this));
285	<	assertEquals(2,a.get(this));
286	<	a.set(this,-2);
287	<	assertEquals(-2,a.getAndIncrement(this));
288	<	assertEquals(-1,a.getAndIncrement(this));
289	<	assertEquals(0,a.getAndIncrement(this));
290	<	assertEquals(1,a.get(this));
284	>	assertEquals(1, a.getAndIncrement(this));
285	>	assertEquals(2, a.get(this));
286	>	a.set(this, -2);
287	>	assertEquals(-2, a.getAndIncrement(this));
288	>	assertEquals(-1, a.getAndIncrement(this));
289	>	assertEquals(0, a.getAndIncrement(this));
290	>	assertEquals(1, a.get(this));
291		}
292
293		/**
#	Line 235 | Line 295 | public class AtomicLongFieldUpdaterTest
295		*/
296		public void testAddAndGet() {
297		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
298	<	try {
239	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
240	<	} catch (RuntimeException ok) {
241	<	return;
242	<	}
298	>	a = updaterFor("x");
299		x = 1;
300	<	assertEquals(3,a.addAndGet(this,2));
301	<	assertEquals(3,a.get(this));
302	<	assertEquals(-1,a.addAndGet(this,-4));
303	<	assertEquals(-1,a.get(this));
300	>	assertEquals(3, a.addAndGet(this, 2));
301	>	assertEquals(3, a.get(this));
302	>	assertEquals(-1, a.addAndGet(this, -4));
303	>	assertEquals(-1, a.get(this));
304		}
305
306		/**
307	<	*  decrementAndGet decrements and returns current value
307	>	* decrementAndGet decrements and returns current value
308		*/
309		public void testDecrementAndGet() {
310		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
311	<	try {
256	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
257	<	} catch (RuntimeException ok) {
258	<	return;
259	<	}
311	>	a = updaterFor("x");
312		x = 1;
313	<	assertEquals(0,a.decrementAndGet(this));
314	<	assertEquals(-1,a.decrementAndGet(this));
315	<	assertEquals(-2,a.decrementAndGet(this));
316	<	assertEquals(-2,a.get(this));
313	>	assertEquals(0, a.decrementAndGet(this));
314	>	assertEquals(-1, a.decrementAndGet(this));
315	>	assertEquals(-2, a.decrementAndGet(this));
316	>	assertEquals(-2, a.get(this));
317		}
318
319		/**
#	Line 269 | Line 321 | public class AtomicLongFieldUpdaterTest
321		*/
322		public void testIncrementAndGet() {
323		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
324	<	try {
273	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
274	<	} catch (RuntimeException ok) {
275	<	return;
276	<	}
324	>	a = updaterFor("x");
325		x = 1;
326	<	assertEquals(2,a.incrementAndGet(this));
327	<	assertEquals(2,a.get(this));
328	<	a.set(this,-2);
329	<	assertEquals(-1,a.incrementAndGet(this));
330	<	assertEquals(0,a.incrementAndGet(this));
331	<	assertEquals(1,a.incrementAndGet(this));
332	<	assertEquals(1,a.get(this));
326	>	assertEquals(2, a.incrementAndGet(this));
327	>	assertEquals(2, a.get(this));
328	>	a.set(this, -2);
329	>	assertEquals(-1, a.incrementAndGet(this));
330	>	assertEquals(0, a.incrementAndGet(this));
331	>	assertEquals(1, a.incrementAndGet(this));
332	>	assertEquals(1, a.get(this));
333		}
334
335		}

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