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Comparing jsr166/src/test/tck/AtomicLongArrayTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.34 by jsr166, Fri Jun 17 01:38:28 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.AtomicLongArray;
11	>
12	>	import junit.framework.Test;
13	>	import junit.framework.TestSuite;
14
15		public class AtomicLongArrayTest extends JSR166TestCase {
16	<	public static void main (String[] args) {
17	<	junit.textui.TestRunner.run (suite());
16	>	public static void main(String[] args) {
17	>	main(suite(), args);
18		}
19		public static Test suite() {
20		return new TestSuite(AtomicLongArrayTest.class);
21		}
22
23	<	public void testConstructor(){
24	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
25	<	for (int i = 0; i < SIZE; ++i)
26	<	assertEquals(0,ai.get(i));
27	<	}
28	<
29	<	public void testGetSet(){
27	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
28	<	for (int i = 0; i < SIZE; ++i) {
29	<	ai.set(i, 1);
30	<	assertEquals(1,ai.get(i));
31	<	ai.set(i, 2);
32	<	assertEquals(2,ai.get(i));
33	<	ai.set(i, -3);
34	<	assertEquals(-3,ai.get(i));
35	<	}
36	<	}
37	<
38	<	public void testCompareAndSet(){
39	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
40	<	for (int i = 0; i < SIZE; ++i) {
41	<	ai.set(i, 1);
42	<	assertTrue(ai.compareAndSet(i, 1,2));
43	<	assertTrue(ai.compareAndSet(i, 2,-4));
44	<	assertEquals(-4,ai.get(i));
45	<	assertFalse(ai.compareAndSet(i, -5,7));
46	<	assertFalse((7 == ai.get(i)));
47	<	assertTrue(ai.compareAndSet(i, -4,7));
48	<	assertEquals(7,ai.get(i));
49	<	}
50	<	}
51	<
52	<	public void testWeakCompareAndSet(){
53	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
54	<	for (int i = 0; i < SIZE; ++i) {
55	<	ai.set(i, 1);
56	<	while(!ai.weakCompareAndSet(i, 1,2));
57	<	while(!ai.weakCompareAndSet(i, 2,-4));
58	<	assertEquals(-4,ai.get(i));
59	<	while(!ai.weakCompareAndSet(i, -4,7));
60	<	assertEquals(7,ai.get(i));
61	<	}
62	<	}
63	<
64	<	public void testGetAndSet(){
65	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
66	<	for (int i = 0; i < SIZE; ++i) {
67	<	ai.set(i, 1);
68	<	assertEquals(1,ai.getAndSet(i,0));
69	<	assertEquals(0,ai.getAndSet(i,-10));
70	<	assertEquals(-10,ai.getAndSet(i,1));
71	<	}
72	<	}
73	<
74	<	public void testGetAndAdd(){
75	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
76	<	for (int i = 0; i < SIZE; ++i) {
77	<	ai.set(i, 1);
78	<	assertEquals(1,ai.getAndAdd(i,2));
79	<	assertEquals(3,ai.get(i));
80	<	assertEquals(3,ai.getAndAdd(i,-4));
81	<	assertEquals(-1,ai.get(i));
82	<	}
83	<	}
84	<
85	<	public void testGetAndDecrement(){
86	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
87	<	for (int i = 0; i < SIZE; ++i) {
88	<	ai.set(i, 1);
89	<	assertEquals(1,ai.getAndDecrement(i));
90	<	assertEquals(0,ai.getAndDecrement(i));
91	<	assertEquals(-1,ai.getAndDecrement(i));
92	<	}
93	<	}
94	<
95	<	public void testGetAndIncrement(){
96	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
97	<	for (int i = 0; i < SIZE; ++i) {
98	<	ai.set(i, 1);
99	<	assertEquals(1,ai.getAndIncrement(i));
100	<	assertEquals(2,ai.get(i));
101	<	ai.set(i,-2);
102	<	assertEquals(-2,ai.getAndIncrement(i));
103	<	assertEquals(-1,ai.getAndIncrement(i));
104	<	assertEquals(0,ai.getAndIncrement(i));
105	<	assertEquals(1,ai.get(i));
106	<	}
23	>	/**
24	>	* constructor creates array of given size with all elements zero
25	>	*/
26	>	public void testConstructor() {
27	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
28	>	for (int i = 0; i < SIZE; i++)
29	>	assertEquals(0, aa.get(i));
30		}
31
32	+	/**
33	+	* constructor with null array throws NPE
34	+	*/
35	+	public void testConstructor2NPE() {
36	+	try {
37	+	long[] a = null;
38	+	new AtomicLongArray(a);
39	+	shouldThrow();
40	+	} catch (NullPointerException success) {}
41	+	}
42	+
43	+	/**
44	+	* constructor with array is of same size and has all elements
45	+	*/
46	+	public void testConstructor2() {
47	+	long[] a = { 17L, 3L, -42L, 99L, -7L };
48	+	AtomicLongArray aa = new AtomicLongArray(a);
49	+	assertEquals(a.length, aa.length());
50	+	for (int i = 0; i < a.length; i++)
51	+	assertEquals(a[i], aa.get(i));
52	+	}
53	+
54	+	/**
55	+	* get and set for out of bound indices throw IndexOutOfBoundsException
56	+	*/
57	+	public void testIndexing() {
58	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
59	+	for (int index : new int[] { -1, SIZE }) {
60	+	try {
61	+	aa.get(index);
62	+	shouldThrow();
63	+	} catch (IndexOutOfBoundsException success) {}
64	+	try {
65	+	aa.set(index, 1);
66	+	shouldThrow();
67	+	} catch (IndexOutOfBoundsException success) {}
68	+	try {
69	+	aa.lazySet(index, 1);
70	+	shouldThrow();
71	+	} catch (IndexOutOfBoundsException success) {}
72	+	try {
73	+	aa.compareAndSet(index, 1, 2);
74	+	shouldThrow();
75	+	} catch (IndexOutOfBoundsException success) {}
76	+	try {
77	+	aa.weakCompareAndSet(index, 1, 2);
78	+	shouldThrow();
79	+	} catch (IndexOutOfBoundsException success) {}
80	+	try {
81	+	aa.getAndAdd(index, 1);
82	+	shouldThrow();
83	+	} catch (IndexOutOfBoundsException success) {}
84	+	try {
85	+	aa.addAndGet(index, 1);
86	+	shouldThrow();
87	+	} catch (IndexOutOfBoundsException success) {}
88	+	try {
89	+	aa.getPlain(index);
90	+	shouldThrow();
91	+	} catch (IndexOutOfBoundsException success) {}
92	+	try {
93	+	aa.getOpaque(index);
94	+	shouldThrow();
95	+	} catch (IndexOutOfBoundsException success) {}
96	+	try {
97	+	aa.getAcquire(index);
98	+	shouldThrow();
99	+	} catch (IndexOutOfBoundsException success) {}
100	+	try {
101	+	aa.setPlain(index, 1);
102	+	shouldThrow();
103	+	} catch (IndexOutOfBoundsException success) {}
104	+	try {
105	+	aa.setOpaque(index, 1);
106	+	shouldThrow();
107	+	} catch (IndexOutOfBoundsException success) {}
108	+	try {
109	+	aa.setRelease(index, 1);
110	+	shouldThrow();
111	+	} catch (IndexOutOfBoundsException success) {}
112	+	try {
113	+	aa.compareAndExchange(index, 1, 2);
114	+	shouldThrow();
115	+	} catch (IndexOutOfBoundsException success) {}
116	+	try {
117	+	aa.compareAndExchangeAcquire(index, 1, 2);
118	+	shouldThrow();
119	+	} catch (IndexOutOfBoundsException success) {}
120	+	try {
121	+	aa.compareAndExchangeRelease(index, 1, 2);
122	+	shouldThrow();
123	+	} catch (IndexOutOfBoundsException success) {}
124	+	try {
125	+	aa.weakCompareAndSetVolatile(index, 1, 2);
126	+	shouldThrow();
127	+	} catch (IndexOutOfBoundsException success) {}
128	+	try {
129	+	aa.weakCompareAndSetAcquire(index, 1, 2);
130	+	shouldThrow();
131	+	} catch (IndexOutOfBoundsException success) {}
132	+	try {
133	+	aa.weakCompareAndSetRelease(index, 1, 2);
134	+	shouldThrow();
135	+	} catch (IndexOutOfBoundsException success) {}
136	+	}
137	+	}
138	+
139	+	/**
140	+	* get returns the last value set at index
141	+	*/
142	+	public void testGetSet() {
143	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
144	+	for (int i = 0; i < SIZE; i++) {
145	+	aa.set(i, 1);
146	+	assertEquals(1, aa.get(i));
147	+	aa.set(i, 2);
148	+	assertEquals(2, aa.get(i));
149	+	aa.set(i, -3);
150	+	assertEquals(-3, aa.get(i));
151	+	}
152	+	}
153	+
154	+	/**
155	+	* get returns the last value lazySet at index by same thread
156	+	*/
157	+	public void testGetLazySet() {
158	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
159	+	for (int i = 0; i < SIZE; i++) {
160	+	aa.lazySet(i, 1);
161	+	assertEquals(1, aa.get(i));
162	+	aa.lazySet(i, 2);
163	+	assertEquals(2, aa.get(i));
164	+	aa.lazySet(i, -3);
165	+	assertEquals(-3, aa.get(i));
166	+	}
167	+	}
168	+
169	+	/**
170	+	* compareAndSet succeeds in changing value if equal to expected else fails
171	+	*/
172	+	public void testCompareAndSet() {
173	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
174	+	for (int i = 0; i < SIZE; i++) {
175	+	aa.set(i, 1);
176	+	assertTrue(aa.compareAndSet(i, 1, 2));
177	+	assertTrue(aa.compareAndSet(i, 2, -4));
178	+	assertEquals(-4, aa.get(i));
179	+	assertFalse(aa.compareAndSet(i, -5, 7));
180	+	assertEquals(-4, aa.get(i));
181	+	assertTrue(aa.compareAndSet(i, -4, 7));
182	+	assertEquals(7, aa.get(i));
183	+	}
184	+	}
185	+
186	+	/**
187	+	* compareAndSet in one thread enables another waiting for value
188	+	* to succeed
189	+	*/
190	+	public void testCompareAndSetInMultipleThreads() throws InterruptedException {
191	+	final AtomicLongArray a = new AtomicLongArray(1);
192	+	a.set(0, 1);
193	+	Thread t = new Thread(new CheckedRunnable() {
194	+	public void realRun() {
195	+	while (!a.compareAndSet(0, 2, 3))
196	+	Thread.yield();
197	+	}});
198	+
199	+	t.start();
200	+	assertTrue(a.compareAndSet(0, 1, 2));
201	+	t.join(LONG_DELAY_MS);
202	+	assertFalse(t.isAlive());
203	+	assertEquals(3, a.get(0));
204	+	}
205	+
206	+	/**
207	+	* repeated weakCompareAndSet succeeds in changing value when equal
208	+	* to expected
209	+	*/
210	+	public void testWeakCompareAndSet() {
211	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
212	+	for (int i = 0; i < SIZE; i++) {
213	+	aa.set(i, 1);
214	+	do {} while (!aa.weakCompareAndSet(i, 1, 2));
215	+	do {} while (!aa.weakCompareAndSet(i, 2, -4));
216	+	assertEquals(-4, aa.get(i));
217	+	do {} while (!aa.weakCompareAndSet(i, -4, 7));
218	+	assertEquals(7, aa.get(i));
219	+	}
220	+	}
221	+
222	+	/**
223	+	* getAndSet returns previous value and sets to given value at given index
224	+	*/
225	+	public void testGetAndSet() {
226	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
227	+	for (int i = 0; i < SIZE; i++) {
228	+	aa.set(i, 1);
229	+	assertEquals(1, aa.getAndSet(i, 0));
230	+	assertEquals(0, aa.getAndSet(i, -10));
231	+	assertEquals(-10, aa.getAndSet(i, 1));
232	+	}
233	+	}
234	+
235	+	/**
236	+	* getAndAdd returns previous value and adds given value
237	+	*/
238	+	public void testGetAndAdd() {
239	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
240	+	for (int i = 0; i < SIZE; i++) {
241	+	aa.set(i, 1);
242	+	assertEquals(1, aa.getAndAdd(i, 2));
243	+	assertEquals(3, aa.get(i));
244	+	assertEquals(3, aa.getAndAdd(i, -4));
245	+	assertEquals(-1, aa.get(i));
246	+	}
247	+	}
248	+
249	+	/**
250	+	* getAndDecrement returns previous value and decrements
251	+	*/
252	+	public void testGetAndDecrement() {
253	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
254	+	for (int i = 0; i < SIZE; i++) {
255	+	aa.set(i, 1);
256	+	assertEquals(1, aa.getAndDecrement(i));
257	+	assertEquals(0, aa.getAndDecrement(i));
258	+	assertEquals(-1, aa.getAndDecrement(i));
259	+	}
260	+	}
261	+
262	+	/**
263	+	* getAndIncrement returns previous value and increments
264	+	*/
265	+	public void testGetAndIncrement() {
266	+	AtomicLongArray aa = new AtomicLongArray(SIZE);
267	+	for (int i = 0; i < SIZE; i++) {
268	+	aa.set(i, 1);
269	+	assertEquals(1, aa.getAndIncrement(i));
270	+	assertEquals(2, aa.get(i));
271	+	aa.set(i, -2);
272	+	assertEquals(-2, aa.getAndIncrement(i));
273	+	assertEquals(-1, aa.getAndIncrement(i));
274	+	assertEquals(0, aa.getAndIncrement(i));
275	+	assertEquals(1, aa.get(i));
276	+	}
277	+	}
278	+
279	+	/**
280	+	* addAndGet adds given value to current, and returns current value
281	+	*/
282		public void testAddAndGet() {
283	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
284	<	for (int i = 0; i < SIZE; ++i) {
285	<	ai.set(i, 1);
286	<	assertEquals(3,ai.addAndGet(i,2));
287	<	assertEquals(3,ai.get(i));
288	<	assertEquals(-1,ai.addAndGet(i,-4));
289	<	assertEquals(-1,ai.get(i));
283	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
284	>	for (int i = 0; i < SIZE; i++) {
285	>	aa.set(i, 1);
286	>	assertEquals(3, aa.addAndGet(i, 2));
287	>	assertEquals(3, aa.get(i));
288	>	assertEquals(-1, aa.addAndGet(i, -4));
289	>	assertEquals(-1, aa.get(i));
290		}
291		}
292
293	<	public void testDecrementAndGet(){
294	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
295	<	for (int i = 0; i < SIZE; ++i) {
296	<	ai.set(i, 1);
297	<	assertEquals(0,ai.decrementAndGet(i));
298	<	assertEquals(-1,ai.decrementAndGet(i));
299	<	assertEquals(-2,ai.decrementAndGet(i));
300	<	assertEquals(-2,ai.get(i));
293	>	/**
294	>	* decrementAndGet decrements and returns current value
295	>	*/
296	>	public void testDecrementAndGet() {
297	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
298	>	for (int i = 0; i < SIZE; i++) {
299	>	aa.set(i, 1);
300	>	assertEquals(0, aa.decrementAndGet(i));
301	>	assertEquals(-1, aa.decrementAndGet(i));
302	>	assertEquals(-2, aa.decrementAndGet(i));
303	>	assertEquals(-2, aa.get(i));
304		}
305		}
306
307	+	/**
308	+	* incrementAndGet increments and returns current value
309	+	*/
310		public void testIncrementAndGet() {
311	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
312	<	for (int i = 0; i < SIZE; ++i) {
313	<	ai.set(i, 1);
314	<	assertEquals(2,ai.incrementAndGet(i));
315	<	assertEquals(2,ai.get(i));
316	<	ai.set(i, -2);
317	<	assertEquals(-1,ai.incrementAndGet(i));
318	<	assertEquals(0,ai.incrementAndGet(i));
319	<	assertEquals(1,ai.incrementAndGet(i));
320	<	assertEquals(1,ai.get(i));
311	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
312	>	for (int i = 0; i < SIZE; i++) {
313	>	aa.set(i, 1);
314	>	assertEquals(2, aa.incrementAndGet(i));
315	>	assertEquals(2, aa.get(i));
316	>	aa.set(i, -2);
317	>	assertEquals(-1, aa.incrementAndGet(i));
318	>	assertEquals(0, aa.incrementAndGet(i));
319	>	assertEquals(1, aa.incrementAndGet(i));
320	>	assertEquals(1, aa.get(i));
321		}
322		}
323
324	<	static final long COUNTDOWN = 100000;
325	<
147	<	class Counter implements Runnable {
148	<	final AtomicLongArray ai;
324	>	class Counter extends CheckedRunnable {
325	>	final AtomicLongArray aa;
326		volatile long counts;
327	<	Counter(AtomicLongArray a) { ai = a; }
328	<	public void run() {
327	>	Counter(AtomicLongArray a) { aa = a; }
328	>	public void realRun() {
329		for (;;) {
330		boolean done = true;
331	<	for (int i = 0; i < ai.length(); ++i) {
332	<	long v = ai.get(i);
333	<	threadAssertTrue(v >= 0);
331	>	for (int i = 0; i < aa.length(); i++) {
332	>	long v = aa.get(i);
333	>	assertTrue(v >= 0);
334		if (v != 0) {
335		done = false;
336	<	if (ai.compareAndSet(i, v, v-1))
336	>	if (aa.compareAndSet(i, v, v - 1))
337		++counts;
338		}
339		}
#	Line 166 | Line 343 | public class AtomicLongArrayTest extends
343		}
344		}
345
346	<	public void testCountingInMultipleThreads() {
347	<	try {
348	<	final AtomicLongArray ai = new AtomicLongArray(SIZE);
349	<	for (int i = 0; i < SIZE; ++i)
350	<	ai.set(i, COUNTDOWN);
351	<	Counter c1 = new Counter(ai);
352	<	Counter c2 = new Counter(ai);
353	<	Thread t1 = new Thread(c1);
354	<	Thread t2 = new Thread(c2);
355	<	t1.start();
356	<	t2.start();
357	<	t1.join();
358	<	t2.join();
359	<	assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
360	<	}
361	<	catch(InterruptedException ie) {
362	<	fail("unexpected exception");
346	>	/**
347	>	* Multiple threads using same array of counters successfully
348	>	* update a number of times equal to total count
349	>	*/
350	>	public void testCountingInMultipleThreads() throws InterruptedException {
351	>	final AtomicLongArray aa = new AtomicLongArray(SIZE);
352	>	long countdown = 10000;
353	>	for (int i = 0; i < SIZE; i++)
354	>	aa.set(i, countdown);
355	>	Counter c1 = new Counter(aa);
356	>	Counter c2 = new Counter(aa);
357	>	Thread t1 = new Thread(c1);
358	>	Thread t2 = new Thread(c2);
359	>	t1.start();
360	>	t2.start();
361	>	t1.join();
362	>	t2.join();
363	>	assertEquals(c1.counts+c2.counts, SIZE * countdown);
364	>	}
365	>
366	>	/**
367	>	* a deserialized serialized array holds same values
368	>	*/
369	>	public void testSerialization() throws Exception {
370	>	AtomicLongArray x = new AtomicLongArray(SIZE);
371	>	for (int i = 0; i < SIZE; i++)
372	>	x.set(i, -i);
373	>	AtomicLongArray y = serialClone(x);
374	>	assertNotSame(x, y);
375	>	assertEquals(x.length(), y.length());
376	>	for (int i = 0; i < SIZE; i++) {
377	>	assertEquals(x.get(i), y.get(i));
378	>	}
379	>	}
380	>
381	>	/**
382	>	* toString returns current value.
383	>	*/
384	>	public void testToString() {
385	>	long[] a = { 17, 3, -42, 99, -7 };
386	>	AtomicLongArray aa = new AtomicLongArray(a);
387	>	assertEquals(Arrays.toString(a), aa.toString());
388	>	}
389	>
390	>	// jdk9
391	>
392	>	/**
393	>	* getPlain returns the last value set
394	>	*/
395	>	public void testGetPlainSet() {
396	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
397	>	for (int i = 0; i < SIZE; i++) {
398	>	aa.set(i, 1);
399	>	assertEquals(1, aa.getPlain(i));
400	>	aa.set(i, 2);
401	>	assertEquals(2, aa.getPlain(i));
402	>	aa.set(i, -3);
403	>	assertEquals(-3, aa.getPlain(i));
404	>	}
405	>	}
406	>
407	>	/**
408	>	* getOpaque returns the last value set
409	>	*/
410	>	public void testGetOpaqueSet() {
411	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
412	>	for (int i = 0; i < SIZE; i++) {
413	>	aa.set(i, 1);
414	>	assertEquals(1, aa.getOpaque(i));
415	>	aa.set(i, 2);
416	>	assertEquals(2, aa.getOpaque(i));
417	>	aa.set(i, -3);
418	>	assertEquals(-3, aa.getOpaque(i));
419	>	}
420	>	}
421	>
422	>	/**
423	>	* getAcquire returns the last value set
424	>	*/
425	>	public void testGetAcquireSet() {
426	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
427	>	for (int i = 0; i < SIZE; i++) {
428	>	aa.set(i, 1);
429	>	assertEquals(1, aa.getAcquire(i));
430	>	aa.set(i, 2);
431	>	assertEquals(2, aa.getAcquire(i));
432	>	aa.set(i, -3);
433	>	assertEquals(-3, aa.getAcquire(i));
434	>	}
435	>	}
436	>
437	>	/**
438	>	* get returns the last value setPlain
439	>	*/
440	>	public void testGetSetPlain() {
441	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
442	>	for (int i = 0; i < SIZE; i++) {
443	>	aa.setPlain(i, 1);
444	>	assertEquals(1, aa.get(i));
445	>	aa.setPlain(i, 2);
446	>	assertEquals(2, aa.get(i));
447	>	aa.setPlain(i, -3);
448	>	assertEquals(-3, aa.get(i));
449	>	}
450	>	}
451	>
452	>	/**
453	>	* get returns the last value setOpaque
454	>	*/
455	>	public void testGetSetOpaque() {
456	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
457	>	for (int i = 0; i < SIZE; i++) {
458	>	aa.setOpaque(i, 1);
459	>	assertEquals(1, aa.get(i));
460	>	aa.setOpaque(i, 2);
461	>	assertEquals(2, aa.get(i));
462	>	aa.setOpaque(i, -3);
463	>	assertEquals(-3, aa.get(i));
464	>	}
465	>	}
466	>
467	>	/**
468	>	* get returns the last value setRelease
469	>	*/
470	>	public void testGetSetRelease() {
471	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
472	>	for (int i = 0; i < SIZE; i++) {
473	>	aa.setRelease(i, 1);
474	>	assertEquals(1, aa.get(i));
475	>	aa.setRelease(i, 2);
476	>	assertEquals(2, aa.get(i));
477	>	aa.setRelease(i, -3);
478	>	assertEquals(-3, aa.get(i));
479	>	}
480	>	}
481	>
482	>	/**
483	>	* compareAndExchange succeeds in changing value if equal to
484	>	* expected else fails
485	>	*/
486	>	public void testCompareAndExchange() {
487	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
488	>	for (int i = 0; i < SIZE; i++) {
489	>	aa.set(i, 1);
490	>	assertEquals(1, aa.compareAndExchange(i, 1, 2));
491	>	assertEquals(2, aa.compareAndExchange(i, 2, -4));
492	>	assertEquals(-4, aa.get(i));
493	>	assertEquals(-4, aa.compareAndExchange(i,-5, 7));
494	>	assertEquals(-4, aa.get(i));
495	>	assertEquals(-4, aa.compareAndExchange(i, -4, 7));
496	>	assertEquals(7, aa.get(i));
497	>	}
498	>	}
499	>
500	>	/**
501	>	* compareAndExchangeAcquire succeeds in changing value if equal to
502	>	* expected else fails
503	>	*/
504	>	public void testCompareAndExchangeAcquire() {
505	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
506	>	for (int i = 0; i < SIZE; i++) {
507	>	aa.set(i, 1);
508	>	assertEquals(1, aa.compareAndExchangeAcquire(i, 1, 2));
509	>	assertEquals(2, aa.compareAndExchangeAcquire(i, 2, -4));
510	>	assertEquals(-4, aa.get(i));
511	>	assertEquals(-4, aa.compareAndExchangeAcquire(i,-5, 7));
512	>	assertEquals(-4, aa.get(i));
513	>	assertEquals(-4, aa.compareAndExchangeAcquire(i, -4, 7));
514	>	assertEquals(7, aa.get(i));
515	>	}
516	>	}
517	>
518	>	/**
519	>	* compareAndExchangeRelease succeeds in changing value if equal to
520	>	* expected else fails
521	>	*/
522	>	public void testCompareAndExchangeRelease() {
523	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
524	>	for (int i = 0; i < SIZE; i++) {
525	>	aa.set(i, 1);
526	>	assertEquals(1, aa.compareAndExchangeRelease(i, 1, 2));
527	>	assertEquals(2, aa.compareAndExchangeRelease(i, 2, -4));
528	>	assertEquals(-4, aa.get(i));
529	>	assertEquals(-4, aa.compareAndExchangeRelease(i,-5, 7));
530	>	assertEquals(-4, aa.get(i));
531	>	assertEquals(-4, aa.compareAndExchangeRelease(i, -4, 7));
532	>	assertEquals(7, aa.get(i));
533	>	}
534	>	}
535	>
536	>	/**
537	>	* repeated weakCompareAndSetVolatile succeeds in changing value when equal
538	>	* to expected
539	>	*/
540	>	public void testWeakCompareAndSetVolatile() {
541	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
542	>	for (int i = 0; i < SIZE; i++) {
543	>	aa.set(i, 1);
544	>	do {} while (!aa.weakCompareAndSetVolatile(i, 1, 2));
545	>	do {} while (!aa.weakCompareAndSetVolatile(i, 2, -4));
546	>	assertEquals(-4, aa.get(i));
547	>	do {} while (!aa.weakCompareAndSetVolatile(i, -4, 7));
548	>	assertEquals(7, aa.get(i));
549	>	}
550	>	}
551	>
552	>	/**
553	>	* repeated weakCompareAndSetAcquire succeeds in changing value when equal
554	>	* to expected
555	>	*/
556	>	public void testWeakCompareAndSetAcquire() {
557	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
558	>	for (int i = 0; i < SIZE; i++) {
559	>	aa.set(i, 1);
560	>	do {} while (!aa.weakCompareAndSetAcquire(i, 1, 2));
561	>	do {} while (!aa.weakCompareAndSetAcquire(i, 2, -4));
562	>	assertEquals(-4, aa.get(i));
563	>	do {} while (!aa.weakCompareAndSetAcquire(i, -4, 7));
564	>	assertEquals(7, aa.get(i));
565	>	}
566	>	}
567	>
568	>	/**
569	>	* repeated weakCompareAndSetRelease succeeds in changing value when equal
570	>	* to expected
571	>	*/
572	>	public void testWeakCompareAndSetRelease() {
573	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
574	>	for (int i = 0; i < SIZE; i++) {
575	>	aa.set(i, 1);
576	>	do {} while (!aa.weakCompareAndSetRelease(i, 1, 2));
577	>	do {} while (!aa.weakCompareAndSetRelease(i, 2, -4));
578	>	assertEquals(-4, aa.get(i));
579	>	do {} while (!aa.weakCompareAndSetRelease(i, -4, 7));
580	>	assertEquals(7, aa.get(i));
581		}
582		}
583
189	–	public void testSerialization() {
190	–	AtomicLongArray l = new AtomicLongArray(SIZE);
191	–	for (int i = 0; i < SIZE; ++i)
192	–	l.set(i, -i);
193	–
194	–	try {
195	–	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
196	–	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
197	–	out.writeObject(l);
198	–	out.close();
199	–
200	–	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
201	–	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
202	–	AtomicLongArray r = (AtomicLongArray) in.readObject();
203	–	for (int i = 0; i < SIZE; ++i) {
204	–	assertEquals(l.get(i), r.get(i));
205	–	}
206	–	} catch(Exception e){
207	–	e.printStackTrace();
208	–	fail("unexpected exception");
209	–	}
210	–	}
211	–
212	–
584		}

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