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* Pat Fisher, Mike Judd. |
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*/ |
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– |
import junit.framework.*; |
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import java.util.Arrays; |
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import java.util.concurrent.atomic.AtomicLongArray; |
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+ |
import junit.framework.Test; |
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+ |
import junit.framework.TestSuite; |
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+ |
|
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public class AtomicLongArrayTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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< |
junit.textui.TestRunner.run(suite()); |
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> |
main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(AtomicLongArrayTest.class); |
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public void testConstructor2NPE() { |
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try { |
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long[] a = null; |
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< |
AtomicLongArray aa = new AtomicLongArray(a); |
| 38 |
> |
new AtomicLongArray(a); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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AtomicLongArray aa = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, 1); |
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< |
while (!aa.weakCompareAndSet(i, 1, 2)); |
| 167 |
< |
while (!aa.weakCompareAndSet(i, 2, -4)); |
| 166 |
> |
do {} while (!aa.weakCompareAndSet(i, 1, 2)); |
| 167 |
> |
do {} while (!aa.weakCompareAndSet(i, 2, -4)); |
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assertEquals(-4, aa.get(i)); |
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< |
while (!aa.weakCompareAndSet(i, -4, 7)); |
| 169 |
> |
do {} while (!aa.weakCompareAndSet(i, -4, 7)); |
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assertEquals(7, aa.get(i)); |
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} |
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} |
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} |
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} |
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|
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– |
static final long COUNTDOWN = 100000; |
| 275 |
– |
|
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class Counter extends CheckedRunnable { |
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final AtomicLongArray aa; |
| 278 |
< |
volatile long counts; |
| 278 |
> |
int decs; |
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Counter(AtomicLongArray a) { aa = a; } |
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public void realRun() { |
| 281 |
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for (;;) { |
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assertTrue(v >= 0); |
| 286 |
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if (v != 0) { |
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done = false; |
| 288 |
< |
if (aa.compareAndSet(i, v, v-1)) |
| 289 |
< |
++counts; |
| 288 |
> |
if (aa.compareAndSet(i, v, v - 1)) |
| 289 |
> |
decs++; |
| 290 |
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} |
| 291 |
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} |
| 292 |
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if (done) |
| 301 |
|
*/ |
| 302 |
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public void testCountingInMultipleThreads() throws InterruptedException { |
| 303 |
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final AtomicLongArray aa = new AtomicLongArray(SIZE); |
| 304 |
+ |
long countdown = 10000; |
| 305 |
|
for (int i = 0; i < SIZE; i++) |
| 306 |
< |
aa.set(i, COUNTDOWN); |
| 306 |
> |
aa.set(i, countdown); |
| 307 |
|
Counter c1 = new Counter(aa); |
| 308 |
|
Counter c2 = new Counter(aa); |
| 309 |
< |
Thread t1 = new Thread(c1); |
| 310 |
< |
Thread t2 = new Thread(c2); |
| 310 |
< |
t1.start(); |
| 311 |
< |
t2.start(); |
| 309 |
> |
Thread t1 = newStartedThread(c1); |
| 310 |
> |
Thread t2 = newStartedThread(c2); |
| 311 |
|
t1.join(); |
| 312 |
|
t2.join(); |
| 313 |
< |
assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN); |
| 313 |
> |
assertEquals(c1.decs + c2.decs, SIZE * countdown); |
| 314 |
|
} |
| 315 |
|
|
| 316 |
|
/** |
| 317 |
< |
* a deserialized serialized array holds same values |
| 317 |
> |
* a deserialized/reserialized array holds same values in same order |
| 318 |
|
*/ |
| 319 |
|
public void testSerialization() throws Exception { |
| 320 |
|
AtomicLongArray x = new AtomicLongArray(SIZE); |
| 321 |
|
for (int i = 0; i < SIZE; i++) |
| 322 |
|
x.set(i, -i); |
| 323 |
|
AtomicLongArray y = serialClone(x); |
| 324 |
< |
assertTrue(x != y); |
| 324 |
> |
assertNotSame(x, y); |
| 325 |
|
assertEquals(x.length(), y.length()); |
| 326 |
|
for (int i = 0; i < SIZE; i++) { |
| 327 |
|
assertEquals(x.get(i), y.get(i)); |
