6 |
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* Pat Fisher, Mike Judd. |
7 |
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*/ |
8 |
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|
9 |
– |
import junit.framework.*; |
9 |
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import java.util.Arrays; |
10 |
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import java.util.concurrent.atomic.AtomicIntegerArray; |
11 |
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|
12 |
+ |
import junit.framework.Test; |
13 |
+ |
import junit.framework.TestSuite; |
14 |
+ |
|
15 |
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public class AtomicIntegerArrayTest extends JSR166TestCase { |
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|
17 |
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public static void main(String[] args) { |
18 |
< |
junit.textui.TestRunner.run(suite()); |
18 |
> |
main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(AtomicIntegerArrayTest.class); |
36 |
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public void testConstructor2NPE() { |
37 |
|
try { |
38 |
|
int[] a = null; |
39 |
< |
AtomicIntegerArray aa = new AtomicIntegerArray(a); |
39 |
> |
new AtomicIntegerArray(a); |
40 |
|
shouldThrow(); |
41 |
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} catch (NullPointerException success) {} |
42 |
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} |
86 |
|
aa.addAndGet(index, 1); |
87 |
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shouldThrow(); |
88 |
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} 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 |
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|
212 |
|
AtomicIntegerArray aa = new AtomicIntegerArray(SIZE); |
213 |
|
for (int i = 0; i < SIZE; i++) { |
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aa.set(i, 1); |
215 |
< |
while (!aa.weakCompareAndSet(i, 1, 2)); |
216 |
< |
while (!aa.weakCompareAndSet(i, 2, -4)); |
215 |
> |
do {} while (!aa.weakCompareAndSet(i, 1, 2)); |
216 |
> |
do {} while (!aa.weakCompareAndSet(i, 2, -4)); |
217 |
|
assertEquals(-4, aa.get(i)); |
218 |
< |
while (!aa.weakCompareAndSet(i, -4, 7)); |
218 |
> |
do {} while (!aa.weakCompareAndSet(i, -4, 7)); |
219 |
|
assertEquals(7, aa.get(i)); |
220 |
|
} |
221 |
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} |
322 |
|
} |
323 |
|
} |
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|
|
275 |
– |
static final int COUNTDOWN = 100000; |
276 |
– |
|
325 |
|
class Counter extends CheckedRunnable { |
326 |
|
final AtomicIntegerArray aa; |
327 |
|
volatile int counts; |
334 |
|
assertTrue(v >= 0); |
335 |
|
if (v != 0) { |
336 |
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done = false; |
337 |
< |
if (aa.compareAndSet(i, v, v-1)) |
337 |
> |
if (aa.compareAndSet(i, v, v - 1)) |
338 |
|
++counts; |
339 |
|
} |
340 |
|
} |
350 |
|
*/ |
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); |
355 |
> |
aa.set(i, countdown); |
356 |
|
Counter c1 = new Counter(aa); |
357 |
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Counter c2 = new Counter(aa); |
358 |
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Thread t1 = new Thread(c1); |
361 |
|
t2.start(); |
362 |
|
t1.join(); |
363 |
|
t2.join(); |
364 |
< |
assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN); |
364 |
> |
assertEquals(c1.counts+c2.counts, SIZE * countdown); |
365 |
|
} |
366 |
|
|
367 |
|
/** |
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 |
+ |
* getAcquire returns the last value set |
425 |
+ |
*/ |
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 |
+ |
/** |
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 |
|
} |