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Comparing jsr166/src/test/tck/AtomicIntegerArrayTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.34 by dl, Thu Jun 16 23:35:25 2016 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.concurrent.atomic.*;
11	<	import java.io.*;
9	>	import java.util.Arrays;
10	>	import java.util.concurrent.atomic.AtomicIntegerArray;
11	>
12	>	import junit.framework.Test;
13	>	import junit.framework.TestSuite;
14
15		public class AtomicIntegerArrayTest extends JSR166TestCase {
16
17	<	public static void main (String[] args) {
18	<	junit.textui.TestRunner.run (suite());
17	>	public static void main(String[] args) {
18	>	main(suite(), args);
19		}
20		public static Test suite() {
21		return new TestSuite(AtomicIntegerArrayTest.class);
22		}
23
21	–
24		/**
25	<	*
25	>	* constructor creates array of given size with all elements zero
26		*/
27		public void testConstructor() {
28	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
29	<	for (int i = 0; i < SIZE; ++i)
30	<	assertEquals(0,ai.get(i));
28	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
29	>	for (int i = 0; i < SIZE; i++)
30	>	assertEquals(0, aa.get(i));
31		}
32
33		/**
34	<	*
34	>	* constructor with null array throws NPE
35	>	*/
36	>	public void testConstructor2NPE() {
37	>	try {
38	>	int[] a = null;
39	>	new AtomicIntegerArray(a);
40	>	shouldThrow();
41	>	} catch (NullPointerException success) {}
42	>	}
43	>
44	>	/**
45	>	* constructor with array is of same size and has all elements
46	>	*/
47	>	public void testConstructor2() {
48	>	int[] a = { 17, 3, -42, 99, -7 };
49	>	AtomicIntegerArray aa = new AtomicIntegerArray(a);
50	>	assertEquals(a.length, aa.length());
51	>	for (int i = 0; i < a.length; i++)
52	>	assertEquals(a[i], aa.get(i));
53	>	}
54	>
55	>	/**
56	>	* get and set for out of bound indices throw IndexOutOfBoundsException
57	>	*/
58	>	public void testIndexing() {
59	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
60	>	for (int index : new int[] { -1, SIZE }) {
61	>	try {
62	>	aa.get(index);
63	>	shouldThrow();
64	>	} catch (IndexOutOfBoundsException success) {}
65	>	try {
66	>	aa.set(index, 1);
67	>	shouldThrow();
68	>	} catch (IndexOutOfBoundsException success) {}
69	>	try {
70	>	aa.lazySet(index, 1);
71	>	shouldThrow();
72	>	} catch (IndexOutOfBoundsException success) {}
73	>	try {
74	>	aa.compareAndSet(index, 1, 2);
75	>	shouldThrow();
76	>	} catch (IndexOutOfBoundsException success) {}
77	>	try {
78	>	aa.weakCompareAndSet(index, 1, 2);
79	>	shouldThrow();
80	>	} catch (IndexOutOfBoundsException success) {}
81	>	try {
82	>	aa.getAndAdd(index, 1);
83	>	shouldThrow();
84	>	} catch (IndexOutOfBoundsException success) {}
85	>	try {
86	>	aa.addAndGet(index, 1);
87	>	shouldThrow();
88	>	} catch (IndexOutOfBoundsException success) {}
89	>	try {
90	>	aa.getPlain(index);
91	>	shouldThrow();
92	>	} catch (IndexOutOfBoundsException success) {}
93	>	try {
94	>	aa.getOpaque(index);
95	>	shouldThrow();
96	>	} catch (IndexOutOfBoundsException success) {}
97	>	try {
98	>	aa.getAcquire(index);
99	>	shouldThrow();
100	>	} catch (IndexOutOfBoundsException success) {}
101	>	try {
102	>	aa.setPlain(index, 1);
103	>	shouldThrow();
104	>	} catch (IndexOutOfBoundsException success) {}
105	>	try {
106	>	aa.setOpaque(index, 1);
107	>	shouldThrow();
108	>	} catch (IndexOutOfBoundsException success) {}
109	>	try {
110	>	aa.setRelease(index, 1);
111	>	shouldThrow();
112	>	} catch (IndexOutOfBoundsException success) {}
113	>	try {
114	>	aa.compareAndExchange(index, 1, 2);
115	>	shouldThrow();
116	>	} catch (IndexOutOfBoundsException success) {}
117	>	try {
118	>	aa.compareAndExchangeAcquire(index, 1, 2);
119	>	shouldThrow();
120	>	} catch (IndexOutOfBoundsException success) {}
121	>	try {
122	>	aa.compareAndExchangeRelease(index, 1, 2);
123	>	shouldThrow();
124	>	} catch (IndexOutOfBoundsException success) {}
125	>	try {
126	>	aa.weakCompareAndSetVolatile(index, 1, 2);
127	>	shouldThrow();
128	>	} catch (IndexOutOfBoundsException success) {}
129	>	try {
130	>	aa.weakCompareAndSetAcquire(index, 1, 2);
131	>	shouldThrow();
132	>	} catch (IndexOutOfBoundsException success) {}
133	>	try {
134	>	aa.weakCompareAndSetRelease(index, 1, 2);
135	>	shouldThrow();
136	>	} catch (IndexOutOfBoundsException success) {}
137	>	}
138	>	}
139	>
140	>	/**
141	>	* get returns the last value set at index
142		*/
143		public void testGetSet() {
144	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
145	<	for (int i = 0; i < SIZE; ++i) {
146	<	ai.set(i, 1);
147	<	assertEquals(1,ai.get(i));
148	<	ai.set(i, 2);
149	<	assertEquals(2,ai.get(i));
150	<	ai.set(i, -3);
151	<	assertEquals(-3,ai.get(i));
144	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
145	>	for (int i = 0; i < SIZE; i++) {
146	>	aa.set(i, 1);
147	>	assertEquals(1, aa.get(i));
148	>	aa.set(i, 2);
149	>	assertEquals(2, aa.get(i));
150	>	aa.set(i, -3);
151	>	assertEquals(-3, aa.get(i));
152		}
153		}
154
155		/**
156	<	*
156	>	* get returns the last value lazySet at index by same thread
157	>	*/
158	>	public void testGetLazySet() {
159	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
160	>	for (int i = 0; i < SIZE; i++) {
161	>	aa.lazySet(i, 1);
162	>	assertEquals(1, aa.get(i));
163	>	aa.lazySet(i, 2);
164	>	assertEquals(2, aa.get(i));
165	>	aa.lazySet(i, -3);
166	>	assertEquals(-3, aa.get(i));
167	>	}
168	>	}
169	>
170	>	/**
171	>	* compareAndSet succeeds in changing value if equal to expected else fails
172		*/
173		public void testCompareAndSet() {
174	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
175	<	for (int i = 0; i < SIZE; ++i) {
176	<	ai.set(i, 1);
177	<	assertTrue(ai.compareAndSet(i, 1,2));
178	<	assertTrue(ai.compareAndSet(i, 2,-4));
179	<	assertEquals(-4,ai.get(i));
180	<	assertFalse(ai.compareAndSet(i, -5,7));
181	<	assertFalse((7 == ai.get(i)));
182	<	assertTrue(ai.compareAndSet(i, -4,7));
183	<	assertEquals(7,ai.get(i));
174	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
175	>	for (int i = 0; i < SIZE; i++) {
176	>	aa.set(i, 1);
177	>	assertTrue(aa.compareAndSet(i, 1, 2));
178	>	assertTrue(aa.compareAndSet(i, 2, -4));
179	>	assertEquals(-4, aa.get(i));
180	>	assertFalse(aa.compareAndSet(i, -5, 7));
181	>	assertEquals(-4, aa.get(i));
182	>	assertTrue(aa.compareAndSet(i, -4, 7));
183	>	assertEquals(7, aa.get(i));
184		}
185		}
186
187		/**
188	<	*
188	>	* compareAndSet in one thread enables another waiting for value
189	>	* to succeed
190	>	*/
191	>	public void testCompareAndSetInMultipleThreads() throws Exception {
192	>	final AtomicIntegerArray a = new AtomicIntegerArray(1);
193	>	a.set(0, 1);
194	>	Thread t = new Thread(new CheckedRunnable() {
195	>	public void realRun() {
196	>	while (!a.compareAndSet(0, 2, 3))
197	>	Thread.yield();
198	>	}});
199	>
200	>	t.start();
201	>	assertTrue(a.compareAndSet(0, 1, 2));
202	>	t.join(LONG_DELAY_MS);
203	>	assertFalse(t.isAlive());
204	>	assertEquals(3, a.get(0));
205	>	}
206	>
207	>	/**
208	>	* repeated weakCompareAndSet succeeds in changing value when equal
209	>	* to expected
210		*/
211		public void testWeakCompareAndSet() {
212	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
213	<	for (int i = 0; i < SIZE; ++i) {
214	<	ai.set(i, 1);
215	<	while(!ai.weakCompareAndSet(i, 1,2));
216	<	while(!ai.weakCompareAndSet(i, 2,-4));
217	<	assertEquals(-4,ai.get(i));
218	<	while(!ai.weakCompareAndSet(i, -4,7));
219	<	assertEquals(7,ai.get(i));
212	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
213	>	for (int i = 0; i < SIZE; i++) {
214	>	aa.set(i, 1);
215	>	do {} while (!aa.weakCompareAndSet(i, 1, 2));
216	>	do {} while (!aa.weakCompareAndSet(i, 2, -4));
217	>	assertEquals(-4, aa.get(i));
218	>	do {} while (!aa.weakCompareAndSet(i, -4, 7));
219	>	assertEquals(7, aa.get(i));
220		}
221		}
222
223		/**
224	<	*
224	>	* getAndSet returns previous value and sets to given value at given index
225		*/
226		public void testGetAndSet() {
227	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
228	<	for (int i = 0; i < SIZE; ++i) {
229	<	ai.set(i, 1);
230	<	assertEquals(1,ai.getAndSet(i,0));
231	<	assertEquals(0,ai.getAndSet(i,-10));
232	<	assertEquals(-10,ai.getAndSet(i,1));
227	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
228	>	for (int i = 0; i < SIZE; i++) {
229	>	aa.set(i, 1);
230	>	assertEquals(1, aa.getAndSet(i, 0));
231	>	assertEquals(0, aa.getAndSet(i, -10));
232	>	assertEquals(-10, aa.getAndSet(i, 1));
233		}
234		}
235
236		/**
237	<	*
237	>	* getAndAdd returns previous value and adds given value
238		*/
239		public void testGetAndAdd() {
240	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
241	<	for (int i = 0; i < SIZE; ++i) {
242	<	ai.set(i, 1);
243	<	assertEquals(1,ai.getAndAdd(i,2));
244	<	assertEquals(3,ai.get(i));
245	<	assertEquals(3,ai.getAndAdd(i,-4));
246	<	assertEquals(-1,ai.get(i));
240	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
241	>	for (int i = 0; i < SIZE; i++) {
242	>	aa.set(i, 1);
243	>	assertEquals(1, aa.getAndAdd(i, 2));
244	>	assertEquals(3, aa.get(i));
245	>	assertEquals(3, aa.getAndAdd(i, -4));
246	>	assertEquals(-1, aa.get(i));
247		}
248		}
249
250		/**
251	<	*
251	>	* getAndDecrement returns previous value and decrements
252		*/
253		public void testGetAndDecrement() {
254	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
255	<	for (int i = 0; i < SIZE; ++i) {
256	<	ai.set(i, 1);
257	<	assertEquals(1,ai.getAndDecrement(i));
258	<	assertEquals(0,ai.getAndDecrement(i));
259	<	assertEquals(-1,ai.getAndDecrement(i));
254	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
255	>	for (int i = 0; i < SIZE; i++) {
256	>	aa.set(i, 1);
257	>	assertEquals(1, aa.getAndDecrement(i));
258	>	assertEquals(0, aa.getAndDecrement(i));
259	>	assertEquals(-1, aa.getAndDecrement(i));
260		}
261		}
262
263		/**
264	<	*
264	>	* getAndIncrement returns previous value and increments
265		*/
266		public void testGetAndIncrement() {
267	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
268	<	for (int i = 0; i < SIZE; ++i) {
269	<	ai.set(i, 1);
270	<	assertEquals(1,ai.getAndIncrement(i));
271	<	assertEquals(2,ai.get(i));
272	<	ai.set(i,-2);
273	<	assertEquals(-2,ai.getAndIncrement(i));
274	<	assertEquals(-1,ai.getAndIncrement(i));
275	<	assertEquals(0,ai.getAndIncrement(i));
276	<	assertEquals(1,ai.get(i));
267	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
268	>	for (int i = 0; i < SIZE; i++) {
269	>	aa.set(i, 1);
270	>	assertEquals(1, aa.getAndIncrement(i));
271	>	assertEquals(2, aa.get(i));
272	>	aa.set(i, -2);
273	>	assertEquals(-2, aa.getAndIncrement(i));
274	>	assertEquals(-1, aa.getAndIncrement(i));
275	>	assertEquals(0, aa.getAndIncrement(i));
276	>	assertEquals(1, aa.get(i));
277		}
278		}
279
280		/**
281	<	*
281	>	* addAndGet adds given value to current, and returns current value
282		*/
283		public void testAddAndGet() {
284	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
285	<	for (int i = 0; i < SIZE; ++i) {
286	<	ai.set(i, 1);
287	<	assertEquals(3,ai.addAndGet(i,2));
288	<	assertEquals(3,ai.get(i));
289	<	assertEquals(-1,ai.addAndGet(i,-4));
290	<	assertEquals(-1,ai.get(i));
284	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
285	>	for (int i = 0; i < SIZE; i++) {
286	>	aa.set(i, 1);
287	>	assertEquals(3, aa.addAndGet(i, 2));
288	>	assertEquals(3, aa.get(i));
289	>	assertEquals(-1, aa.addAndGet(i, -4));
290	>	assertEquals(-1, aa.get(i));
291		}
292		}
293
294		/**
295	<	*
295	>	* decrementAndGet decrements and returns current value
296		*/
297		public void testDecrementAndGet() {
298	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
299	<	for (int i = 0; i < SIZE; ++i) {
300	<	ai.set(i, 1);
301	<	assertEquals(0,ai.decrementAndGet(i));
302	<	assertEquals(-1,ai.decrementAndGet(i));
303	<	assertEquals(-2,ai.decrementAndGet(i));
304	<	assertEquals(-2,ai.get(i));
298	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
299	>	for (int i = 0; i < SIZE; i++) {
300	>	aa.set(i, 1);
301	>	assertEquals(0, aa.decrementAndGet(i));
302	>	assertEquals(-1, aa.decrementAndGet(i));
303	>	assertEquals(-2, aa.decrementAndGet(i));
304	>	assertEquals(-2, aa.get(i));
305		}
306		}
307
308		/**
309	<	*
309	>	* incrementAndGet increments and returns current value
310		*/
311		public void testIncrementAndGet() {
312	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
313	<	for (int i = 0; i < SIZE; ++i) {
314	<	ai.set(i, 1);
315	<	assertEquals(2,ai.incrementAndGet(i));
316	<	assertEquals(2,ai.get(i));
317	<	ai.set(i, -2);
318	<	assertEquals(-1,ai.incrementAndGet(i));
319	<	assertEquals(0,ai.incrementAndGet(i));
320	<	assertEquals(1,ai.incrementAndGet(i));
321	<	assertEquals(1,ai.get(i));
312	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
313	>	for (int i = 0; i < SIZE; i++) {
314	>	aa.set(i, 1);
315	>	assertEquals(2, aa.incrementAndGet(i));
316	>	assertEquals(2, aa.get(i));
317	>	aa.set(i, -2);
318	>	assertEquals(-1, aa.incrementAndGet(i));
319	>	assertEquals(0, aa.incrementAndGet(i));
320	>	assertEquals(1, aa.incrementAndGet(i));
321	>	assertEquals(1, aa.get(i));
322		}
323		}
324
325	<	static final int COUNTDOWN = 100000;
326	<
182	<	class Counter implements Runnable {
183	<	final AtomicIntegerArray ai;
325	>	class Counter extends CheckedRunnable {
326	>	final AtomicIntegerArray aa;
327		volatile int counts;
328	<	Counter(AtomicIntegerArray a) { ai = a; }
329	<	public void run() {
328	>	Counter(AtomicIntegerArray a) { aa = a; }
329	>	public void realRun() {
330		for (;;) {
331		boolean done = true;
332	<	for (int i = 0; i < ai.length(); ++i) {
333	<	int v = ai.get(i);
334	<	threadAssertTrue(v >= 0);
332	>	for (int i = 0; i < aa.length(); i++) {
333	>	int v = aa.get(i);
334	>	assertTrue(v >= 0);
335		if (v != 0) {
336		done = false;
337	<	if (ai.compareAndSet(i, v, v-1))
337	>	if (aa.compareAndSet(i, v, v - 1))
338		++counts;
339		}
340		}
#	Line 202 | Line 345 | public class AtomicIntegerArrayTest exte
345		}
346
347		/**
348	<	*
348	>	* Multiple threads using same array of counters successfully
349	>	* update a number of times equal to total count
350		*/
351	<	public void testCountingInMultipleThreads() {
352	<	try {
353	<	final AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
354	<	for (int i = 0; i < SIZE; ++i)
355	<	ai.set(i, COUNTDOWN);
356	<	Counter c1 = new Counter(ai);
357	<	Counter c2 = new Counter(ai);
358	<	Thread t1 = new Thread(c1);
359	<	Thread t2 = new Thread(c2);
360	<	t1.start();
361	<	t2.start();
362	<	t1.join();
363	<	t2.join();
364	<	assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
351	>	public void testCountingInMultipleThreads() throws InterruptedException {
352	>	final AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
353	>	int countdown = 10000;
354	>	for (int i = 0; i < SIZE; i++)
355	>	aa.set(i, countdown);
356	>	Counter c1 = new Counter(aa);
357	>	Counter c2 = new Counter(aa);
358	>	Thread t1 = new Thread(c1);
359	>	Thread t2 = new Thread(c2);
360	>	t1.start();
361	>	t2.start();
362	>	t1.join();
363	>	t2.join();
364	>	assertEquals(c1.counts+c2.counts, SIZE * countdown);
365	>	}
366	>
367	>	/**
368	>	* a deserialized serialized array holds same values
369	>	*/
370	>	public void testSerialization() throws Exception {
371	>	AtomicIntegerArray x = new AtomicIntegerArray(SIZE);
372	>	for (int i = 0; i < SIZE; i++)
373	>	x.set(i, -i);
374	>	AtomicIntegerArray y = serialClone(x);
375	>	assertNotSame(x, y);
376	>	assertEquals(x.length(), y.length());
377	>	for (int i = 0; i < SIZE; i++) {
378	>	assertEquals(x.get(i), y.get(i));
379		}
380	<	catch(InterruptedException ie) {
381	<	unexpectedException();
380	>	}
381	>
382	>	/**
383	>	* toString returns current value.
384	>	*/
385	>	public void testToString() {
386	>	int[] a = { 17, 3, -42, 99, -7 };
387	>	AtomicIntegerArray aa = new AtomicIntegerArray(a);
388	>	assertEquals(Arrays.toString(a), aa.toString());
389	>	}
390	>
391	>	// jdk9
392	>
393	>	/**
394	>	* getPlain returns the last value set
395	>	*/
396	>	public void testGetPlainSet() {
397	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
398	>	for (int i = 0; i < SIZE; i++) {
399	>	aa.set(i, 1);
400	>	assertEquals(1, aa.getPlain(i));
401	>	aa.set(i, 2);
402	>	assertEquals(2, aa.getPlain(i));
403	>	aa.set(i, -3);
404	>	assertEquals(-3, aa.getPlain(i));
405		}
406		}
407
408	+	/**
409	+	* getOpaque returns the last value set
410	+	*/
411	+	public void testGetOpaqueSet() {
412	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
413	+	for (int i = 0; i < SIZE; i++) {
414	+	aa.set(i, 1);
415	+	assertEquals(1, aa.getOpaque(i));
416	+	aa.set(i, 2);
417	+	assertEquals(2, aa.getOpaque(i));
418	+	aa.set(i, -3);
419	+	assertEquals(-3, aa.getOpaque(i));
420	+	}
421	+	}
422
423		/**
424	<	*
424	>	* getAcquire returns the last value set
425		*/
426	<	public void testSerialization() {
427	<	AtomicIntegerArray l = new AtomicIntegerArray(SIZE);
428	<	for (int i = 0; i < SIZE; ++i)
429	<	l.set(i, -i);
426	>	public void testGetAcquireSet() {
427	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
428	>	for (int i = 0; i < SIZE; i++) {
429	>	aa.set(i, 1);
430	>	assertEquals(1, aa.getAcquire(i));
431	>	aa.set(i, 2);
432	>	assertEquals(2, aa.getAcquire(i));
433	>	aa.set(i, -3);
434	>	assertEquals(-3, aa.getAcquire(i));
435	>	}
436	>	}
437
438	<	try {
439	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
440	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
441	<	out.writeObject(l);
442	<	out.close();
443	<
444	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
445	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
446	<	AtomicIntegerArray r = (AtomicIntegerArray) in.readObject();
447	<	for (int i = 0; i < SIZE; ++i) {
448	<	assertEquals(l.get(i), r.get(i));
449	<	}
248	<	} catch(Exception e){
249	<	e.printStackTrace();
250	<	unexpectedException();
438	>	/**
439	>	* get returns the last value setPlain
440	>	*/
441	>	public void testGetSetPlain() {
442	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
443	>	for (int i = 0; i < SIZE; i++) {
444	>	aa.setPlain(i, 1);
445	>	assertEquals(1, aa.get(i));
446	>	aa.setPlain(i, 2);
447	>	assertEquals(2, aa.get(i));
448	>	aa.setPlain(i, -3);
449	>	assertEquals(-3, aa.get(i));
450		}
451		}
452
453	+	/**
454	+	* get returns the last value setOpaque
455	+	*/
456	+	public void testGetSetOpaque() {
457	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
458	+	for (int i = 0; i < SIZE; i++) {
459	+	aa.setOpaque(i, 1);
460	+	assertEquals(1, aa.get(i));
461	+	aa.setOpaque(i, 2);
462	+	assertEquals(2, aa.get(i));
463	+	aa.setOpaque(i, -3);
464	+	assertEquals(-3, aa.get(i));
465	+	}
466	+	}
467	+
468	+	/**
469	+	* get returns the last value setRelease
470	+	*/
471	+	public void testGetSetRelease() {
472	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
473	+	for (int i = 0; i < SIZE; i++) {
474	+	aa.setRelease(i, 1);
475	+	assertEquals(1, aa.get(i));
476	+	aa.setRelease(i, 2);
477	+	assertEquals(2, aa.get(i));
478	+	aa.setRelease(i, -3);
479	+	assertEquals(-3, aa.get(i));
480	+	}
481	+	}
482	+
483	+	/**
484	+	* compareAndExchange succeeds in changing value if equal to
485	+	* expected else fails
486	+	*/
487	+	public void testCompareAndExchange() {
488	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
489	+	for (int i = 0; i < SIZE; i++) {
490	+	aa.set(i, 1);
491	+	assertEquals(1, aa.compareAndExchange(i, 1, 2));
492	+	assertEquals(2, aa.compareAndExchange(i, 2, -4));
493	+	assertEquals(-4, aa.get(i));
494	+	assertEquals(-4, aa.compareAndExchange(i,-5, 7));
495	+	assertEquals(-4, aa.get(i));
496	+	assertEquals(-4, aa.compareAndExchange(i, -4, 7));
497	+	assertEquals(7, aa.get(i));
498	+	}
499	+	}
500	+
501	+	/**
502	+	* compareAndExchangeAcquire succeeds in changing value if equal to
503	+	* expected else fails
504	+	*/
505	+	public void testCompareAndExchangeAcquire() {
506	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
507	+	for (int i = 0; i < SIZE; i++) {
508	+	aa.set(i, 1);
509	+	assertEquals(1, aa.compareAndExchangeAcquire(i, 1, 2));
510	+	assertEquals(2, aa.compareAndExchangeAcquire(i, 2, -4));
511	+	assertEquals(-4, aa.get(i));
512	+	assertEquals(-4, aa.compareAndExchangeAcquire(i,-5, 7));
513	+	assertEquals(-4, aa.get(i));
514	+	assertEquals(-4, aa.compareAndExchangeAcquire(i, -4, 7));
515	+	assertEquals(7, aa.get(i));
516	+	}
517	+	}
518	+
519	+	/**
520	+	* compareAndExchangeRelease succeeds in changing value if equal to
521	+	* expected else fails
522	+	*/
523	+	public void testCompareAndExchangeRelease() {
524	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
525	+	for (int i = 0; i < SIZE; i++) {
526	+	aa.set(i, 1);
527	+	assertEquals(1, aa.compareAndExchangeRelease(i, 1, 2));
528	+	assertEquals(2, aa.compareAndExchangeRelease(i, 2, -4));
529	+	assertEquals(-4, aa.get(i));
530	+	assertEquals(-4, aa.compareAndExchangeRelease(i,-5, 7));
531	+	assertEquals(-4, aa.get(i));
532	+	assertEquals(-4, aa.compareAndExchangeRelease(i, -4, 7));
533	+	assertEquals(7, aa.get(i));
534	+	}
535	+	}
536	+
537	+	/**
538	+	* repeated weakCompareAndSetVolatile succeeds in changing value when equal
539	+	* to expected
540	+	*/
541	+	public void testWeakCompareAndSetVolatile() {
542	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
543	+	for (int i = 0; i < SIZE; i++) {
544	+	aa.set(i, 1);
545	+	do {} while (!aa.weakCompareAndSetVolatile(i, 1, 2));
546	+	do {} while (!aa.weakCompareAndSetVolatile(i, 2, -4));
547	+	assertEquals(-4, aa.get(i));
548	+	do {} while (!aa.weakCompareAndSetVolatile(i, -4, 7));
549	+	assertEquals(7, aa.get(i));
550	+	}
551	+	}
552	+
553	+	/**
554	+	* repeated weakCompareAndSetAcquire succeeds in changing value when equal
555	+	* to expected
556	+	*/
557	+	public void testWeakCompareAndSetAcquire() {
558	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
559	+	for (int i = 0; i < SIZE; i++) {
560	+	aa.set(i, 1);
561	+	do {} while (!aa.weakCompareAndSetAcquire(i, 1, 2));
562	+	do {} while (!aa.weakCompareAndSetAcquire(i, 2, -4));
563	+	assertEquals(-4, aa.get(i));
564	+	do {} while (!aa.weakCompareAndSetAcquire(i, -4, 7));
565	+	assertEquals(7, aa.get(i));
566	+	}
567	+	}
568	+
569	+	/**
570	+	* repeated weakCompareAndSetRelease succeeds in changing value when equal
571	+	* to expected
572	+	*/
573	+	public void testWeakCompareAndSetRelease() {
574	+	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
575	+	for (int i = 0; i < SIZE; i++) {
576	+	aa.set(i, 1);
577	+	do {} while (!aa.weakCompareAndSetRelease(i, 1, 2));
578	+	do {} while (!aa.weakCompareAndSetRelease(i, 2, -4));
579	+	assertEquals(-4, aa.get(i));
580	+	do {} while (!aa.weakCompareAndSetRelease(i, -4, 7));
581	+	assertEquals(7, aa.get(i));
582	+	}
583	+	}
584	+
585		}

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