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Comparing jsr166/src/test/tck/AtomicLongFieldUpdaterTest.java (file contents):
Revision 1.11 by jsr166, Mon Nov 16 04:57:10 2009 UTC vs.
Revision 1.29 by jsr166, Sat Apr 25 04:55:30 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;
17		long w;
18
19	<	public static void main(String[] args){
20	<	junit.textui.TestRunner.run(suite());
19	>	public static void main(String[] args) {
20	>	main(suite(), args);
21		}
22		public static Test suite() {
23		return new TestSuite(AtomicLongFieldUpdaterTest.class);
24		}
25
26	+	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> updaterFor(String fieldName) {
27	+	return AtomicLongFieldUpdater.newUpdater
28	+	(AtomicLongFieldUpdaterTest.class, fieldName);
29	+	}
30	+
31		/**
32		* Construction with non-existent field throws RuntimeException
33		*/
34	<	public void testConstructor(){
34	>	public void testConstructor() {
35		try {
36	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
31	<	a = AtomicLongFieldUpdater.newUpdater
32	<	(AtomicLongFieldUpdaterTest.class, "y");
36	>	updaterFor("y");
37		shouldThrow();
38	+	} catch (RuntimeException success) {
39	+	assertNotNull(success.getCause());
40		}
35	–	catch (RuntimeException rt) {}
41		}
42
43		/**
44	<	* construction with field not of given type throws RuntimeException
44	>	* construction with field not of given type throws IllegalArgumentException
45		*/
46	<	public void testConstructor2(){
46	>	public void testConstructor2() {
47		try {
48	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
44	<	a = AtomicLongFieldUpdater.newUpdater
45	<	(AtomicLongFieldUpdaterTest.class, "z");
48	>	updaterFor("z");
49		shouldThrow();
50	<	}
48	<	catch (RuntimeException rt) {}
50	>	} catch (IllegalArgumentException success) {}
51		}
52
53		/**
54	<	* construction with non-volatile field throws RuntimeException
54	>	* construction with non-volatile field throws IllegalArgumentException
55		*/
56	<	public void testConstructor3(){
56	>	public void testConstructor3() {
57		try {
58	<	AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>
57	<	a = AtomicLongFieldUpdater.newUpdater
58	<	(AtomicLongFieldUpdaterTest.class, "w");
58	>	updaterFor("w");
59		shouldThrow();
60	<	}
61	<
62	<	catch (RuntimeException rt) {}
60	>	} catch (IllegalArgumentException success) {}
61		}
62
63		/**
64	<	*  get returns the last value set or assigned
64	>	* get returns the last value set or assigned
65		*/
66	<	public void testGetSet(){
66	>	public void testGetSet() {
67		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
68	<	try {
71	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
72	<	} catch (RuntimeException ok) {
73	<	return;
74	<	}
68	>	a = updaterFor("x");
69		x = 1;
70	<	assertEquals(1,a.get(this));
71	<	a.set(this,2);
72	<	assertEquals(2,a.get(this));
73	<	a.set(this,-3);
74	<	assertEquals(-3,a.get(this));
70	>	assertEquals(1, a.get(this));
71	>	a.set(this, 2);
72	>	assertEquals(2, a.get(this));
73	>	a.set(this, -3);
74	>	assertEquals(-3, a.get(this));
75		}
76
77		/**
78	<	*  get returns the last value lazySet by same thread
78	>	* get returns the last value lazySet by same thread
79		*/
80	<	public void testGetLazySet(){
80	>	public void testGetLazySet() {
81		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
82	<	try {
89	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
90	<	} catch (RuntimeException ok) {
91	<	return;
92	<	}
82	>	a = updaterFor("x");
83		x = 1;
84	<	assertEquals(1,a.get(this));
85	<	a.lazySet(this,2);
86	<	assertEquals(2,a.get(this));
87	<	a.lazySet(this,-3);
88	<	assertEquals(-3,a.get(this));
84	>	assertEquals(1, a.get(this));
85	>	a.lazySet(this, 2);
86	>	assertEquals(2, a.get(this));
87	>	a.lazySet(this, -3);
88	>	assertEquals(-3, a.get(this));
89		}
90
101	–
91		/**
92		* compareAndSet succeeds in changing value if equal to expected else fails
93		*/
94	<	public void testCompareAndSet(){
94	>	public void testCompareAndSet() {
95		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
96	<	try {
108	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
109	<	} catch (RuntimeException ok) {
110	<	return;
111	<	}
96	>	a = updaterFor("x");
97		x = 1;
98	<	assertTrue(a.compareAndSet(this,1,2));
99	<	assertTrue(a.compareAndSet(this,2,-4));
100	<	assertEquals(-4,a.get(this));
101	<	assertFalse(a.compareAndSet(this,-5,7));
102	<	assertFalse((7 == a.get(this)));
103	<	assertTrue(a.compareAndSet(this,-4,7));
104	<	assertEquals(7,a.get(this));
98	>	assertTrue(a.compareAndSet(this, 1, 2));
99	>	assertTrue(a.compareAndSet(this, 2, -4));
100	>	assertEquals(-4, a.get(this));
101	>	assertFalse(a.compareAndSet(this, -5, 7));
102	>	assertEquals(-4, a.get(this));
103	>	assertTrue(a.compareAndSet(this, -4, 7));
104	>	assertEquals(7, a.get(this));
105		}
106
122	–
107		/**
108		* compareAndSet in one thread enables another waiting for value
109		* to succeed
110		*/
111	<	public void testCompareAndSetInMultipleThreads() {
111	>	public void testCompareAndSetInMultipleThreads() throws Exception {
112		x = 1;
113	<	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest>a;
114	<	try {
131	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
132	<	} catch (RuntimeException ok) {
133	<	return;
134	<	}
113	>	final AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
114	>	a = updaterFor("x");
115
116	<	Thread t = new Thread(new Runnable() {
117	<	public void run() {
118	<	while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3)) Thread.yield();
119	<	}});
120	<	try {
121	<	t.start();
122	<	assertTrue(a.compareAndSet(this, 1, 2));
123	<	t.join(LONG_DELAY_MS);
124	<	assertFalse(t.isAlive());
125	<	assertEquals(a.get(this), 3);
126	<	}
147	<	catch (Exception e) {
148	<	unexpectedException();
149	<	}
116	>	Thread t = new Thread(new CheckedRunnable() {
117	>	public void realRun() {
118	>	while (!a.compareAndSet(AtomicLongFieldUpdaterTest.this, 2, 3))
119	>	Thread.yield();
120	>	}});
121	>
122	>	t.start();
123	>	assertTrue(a.compareAndSet(this, 1, 2));
124	>	t.join(LONG_DELAY_MS);
125	>	assertFalse(t.isAlive());
126	>	assertEquals(3, a.get(this));
127		}
128
129		/**
130		* repeated weakCompareAndSet succeeds in changing value when equal
131		* to expected
132		*/
133	<	public void testWeakCompareAndSet(){
133	>	public void testWeakCompareAndSet() {
134		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
135	<	try {
159	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
160	<	} catch (RuntimeException ok) {
161	<	return;
162	<	}
135	>	a = updaterFor("x");
136		x = 1;
137	<	while (!a.weakCompareAndSet(this,1,2));
138	<	while (!a.weakCompareAndSet(this,2,-4));
139	<	assertEquals(-4,a.get(this));
140	<	while (!a.weakCompareAndSet(this,-4,7));
141	<	assertEquals(7,a.get(this));
137	>	do {} while (!a.weakCompareAndSet(this, 1, 2));
138	>	do {} while (!a.weakCompareAndSet(this, 2, -4));
139	>	assertEquals(-4, a.get(this));
140	>	do {} while (!a.weakCompareAndSet(this, -4, 7));
141	>	assertEquals(7, a.get(this));
142		}
143
144		/**
145	<	*  getAndSet returns previous value and sets to given value
145	>	* getAndSet returns previous value and sets to given value
146		*/
147	<	public void testGetAndSet(){
147	>	public void testGetAndSet() {
148		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
149	<	try {
177	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
178	<	} catch (RuntimeException ok) {
179	<	return;
180	<	}
149	>	a = updaterFor("x");
150		x = 1;
151	<	assertEquals(1,a.getAndSet(this, 0));
152	<	assertEquals(0,a.getAndSet(this,-10));
153	<	assertEquals(-10,a.getAndSet(this,1));
151	>	assertEquals(1, a.getAndSet(this, 0));
152	>	assertEquals(0, a.getAndSet(this, -10));
153	>	assertEquals(-10, a.getAndSet(this, 1));
154		}
155
156		/**
157		* getAndAdd returns previous value and adds given value
158		*/
159	<	public void testGetAndAdd(){
159	>	public void testGetAndAdd() {
160		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
161	<	try {
193	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
194	<	} catch (RuntimeException ok) {
195	<	return;
196	<	}
161	>	a = updaterFor("x");
162		x = 1;
163	<	assertEquals(1,a.getAndAdd(this,2));
164	<	assertEquals(3,a.get(this));
165	<	assertEquals(3,a.getAndAdd(this,-4));
166	<	assertEquals(-1,a.get(this));
163	>	assertEquals(1, a.getAndAdd(this, 2));
164	>	assertEquals(3, a.get(this));
165	>	assertEquals(3, a.getAndAdd(this, -4));
166	>	assertEquals(-1, a.get(this));
167		}
168
169		/**
170		* getAndDecrement returns previous value and decrements
171		*/
172	<	public void testGetAndDecrement(){
172	>	public void testGetAndDecrement() {
173		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
174	<	try {
210	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
211	<	} catch (RuntimeException ok) {
212	<	return;
213	<	}
174	>	a = updaterFor("x");
175		x = 1;
176	<	assertEquals(1,a.getAndDecrement(this));
177	<	assertEquals(0,a.getAndDecrement(this));
178	<	assertEquals(-1,a.getAndDecrement(this));
176	>	assertEquals(1, a.getAndDecrement(this));
177	>	assertEquals(0, a.getAndDecrement(this));
178	>	assertEquals(-1, a.getAndDecrement(this));
179		}
180
181		/**
182		* getAndIncrement returns previous value and increments
183		*/
184	<	public void testGetAndIncrement(){
184	>	public void testGetAndIncrement() {
185		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
186	<	try {
226	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
227	<	} catch (RuntimeException ok) {
228	<	return;
229	<	}
186	>	a = updaterFor("x");
187		x = 1;
188	<	assertEquals(1,a.getAndIncrement(this));
189	<	assertEquals(2,a.get(this));
190	<	a.set(this,-2);
191	<	assertEquals(-2,a.getAndIncrement(this));
192	<	assertEquals(-1,a.getAndIncrement(this));
193	<	assertEquals(0,a.getAndIncrement(this));
194	<	assertEquals(1,a.get(this));
188	>	assertEquals(1, a.getAndIncrement(this));
189	>	assertEquals(2, a.get(this));
190	>	a.set(this, -2);
191	>	assertEquals(-2, a.getAndIncrement(this));
192	>	assertEquals(-1, a.getAndIncrement(this));
193	>	assertEquals(0, a.getAndIncrement(this));
194	>	assertEquals(1, a.get(this));
195		}
196
197		/**
198		* addAndGet adds given value to current, and returns current value
199		*/
200	<	public void testAddAndGet(){
200	>	public void testAddAndGet() {
201		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
202	<	try {
246	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
247	<	} catch (RuntimeException ok) {
248	<	return;
249	<	}
202	>	a = updaterFor("x");
203		x = 1;
204	<	assertEquals(3,a.addAndGet(this,2));
205	<	assertEquals(3,a.get(this));
206	<	assertEquals(-1,a.addAndGet(this,-4));
207	<	assertEquals(-1,a.get(this));
204	>	assertEquals(3, a.addAndGet(this, 2));
205	>	assertEquals(3, a.get(this));
206	>	assertEquals(-1, a.addAndGet(this, -4));
207	>	assertEquals(-1, a.get(this));
208		}
209
210		/**
211	<	*  decrementAndGet decrements and returns current value
211	>	* decrementAndGet decrements and returns current value
212		*/
213	<	public void testDecrementAndGet(){
213	>	public void testDecrementAndGet() {
214		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
215	<	try {
263	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
264	<	} catch (RuntimeException ok) {
265	<	return;
266	<	}
215	>	a = updaterFor("x");
216		x = 1;
217	<	assertEquals(0,a.decrementAndGet(this));
218	<	assertEquals(-1,a.decrementAndGet(this));
219	<	assertEquals(-2,a.decrementAndGet(this));
220	<	assertEquals(-2,a.get(this));
217	>	assertEquals(0, a.decrementAndGet(this));
218	>	assertEquals(-1, a.decrementAndGet(this));
219	>	assertEquals(-2, a.decrementAndGet(this));
220	>	assertEquals(-2, a.get(this));
221		}
222
223		/**
224		* incrementAndGet increments and returns current value
225		*/
226	<	public void testIncrementAndGet(){
226	>	public void testIncrementAndGet() {
227		AtomicLongFieldUpdater<AtomicLongFieldUpdaterTest> a;
228	<	try {
280	<	a = AtomicLongFieldUpdater.newUpdater(AtomicLongFieldUpdaterTest.class, "x");
281	<	} catch (RuntimeException ok) {
282	<	return;
283	<	}
228	>	a = updaterFor("x");
229		x = 1;
230	<	assertEquals(2,a.incrementAndGet(this));
231	<	assertEquals(2,a.get(this));
232	<	a.set(this,-2);
233	<	assertEquals(-1,a.incrementAndGet(this));
234	<	assertEquals(0,a.incrementAndGet(this));
235	<	assertEquals(1,a.incrementAndGet(this));
236	<	assertEquals(1,a.get(this));
230	>	assertEquals(2, a.incrementAndGet(this));
231	>	assertEquals(2, a.get(this));
232	>	a.set(this, -2);
233	>	assertEquals(-1, a.incrementAndGet(this));
234	>	assertEquals(0, a.incrementAndGet(this));
235	>	assertEquals(1, a.incrementAndGet(this));
236	>	assertEquals(1, a.get(this));
237		}
238
239		}

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