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*/ |
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import junit.framework.*; |
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import java.util.concurrent.atomic.*; |
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import java.io.*; |
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import java.util.*; |
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import java.util.Arrays; |
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> |
import java.util.concurrent.atomic.AtomicLongArray; |
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public class AtomicLongArrayTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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public void testConstructor() { |
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(0,ai.get(i)); |
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assertEquals(0, ai.get(i)); |
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} |
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|
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/** |
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* constructor with array is of same size and has all elements |
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*/ |
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public void testConstructor2() { |
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long[] a = { 17L, 3L, -42L, 99L, -7L}; |
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long[] a = { 17L, 3L, -42L, 99L, -7L }; |
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AtomicLongArray ai = new AtomicLongArray(a); |
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assertEquals(a.length, ai.length()); |
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for (int i = 0; i < a.length; ++i) |
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.get(i)); |
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assertEquals(1, ai.get(i)); |
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ai.set(i, 2); |
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assertEquals(2,ai.get(i)); |
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assertEquals(2, ai.get(i)); |
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ai.set(i, -3); |
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assertEquals(-3,ai.get(i)); |
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assertEquals(-3, ai.get(i)); |
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} |
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} |
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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ai.lazySet(i, 1); |
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assertEquals(1,ai.get(i)); |
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assertEquals(1, ai.get(i)); |
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ai.lazySet(i, 2); |
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assertEquals(2,ai.get(i)); |
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assertEquals(2, ai.get(i)); |
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ai.lazySet(i, -3); |
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assertEquals(-3,ai.get(i)); |
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assertEquals(-3, ai.get(i)); |
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} |
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} |
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|
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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ai.set(i, 1); |
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assertTrue(ai.compareAndSet(i, 1,2)); |
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assertTrue(ai.compareAndSet(i, 2,-4)); |
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assertEquals(-4,ai.get(i)); |
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assertFalse(ai.compareAndSet(i, -5,7)); |
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assertEquals(-4,ai.get(i)); |
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assertTrue(ai.compareAndSet(i, -4,7)); |
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assertEquals(7,ai.get(i)); |
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assertTrue(ai.compareAndSet(i, 1, 2)); |
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assertTrue(ai.compareAndSet(i, 2, -4)); |
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assertEquals(-4, ai.get(i)); |
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assertFalse(ai.compareAndSet(i, -5, 7)); |
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assertEquals(-4, ai.get(i)); |
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assertTrue(ai.compareAndSet(i, -4, 7)); |
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assertEquals(7, ai.get(i)); |
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} |
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} |
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assertTrue(a.compareAndSet(0, 1, 2)); |
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t.join(LONG_DELAY_MS); |
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assertFalse(t.isAlive()); |
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assertEquals(a.get(0), 3); |
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assertEquals(3, a.get(0)); |
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} |
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|
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/** |
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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ai.set(i, 1); |
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while (!ai.weakCompareAndSet(i, 1,2)); |
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while (!ai.weakCompareAndSet(i, 2,-4)); |
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assertEquals(-4,ai.get(i)); |
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while (!ai.weakCompareAndSet(i, -4,7)); |
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assertEquals(7,ai.get(i)); |
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while (!ai.weakCompareAndSet(i, 1, 2)); |
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while (!ai.weakCompareAndSet(i, 2, -4)); |
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assertEquals(-4, ai.get(i)); |
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while (!ai.weakCompareAndSet(i, -4, 7)); |
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assertEquals(7, ai.get(i)); |
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} |
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} |
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|
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.getAndSet(i,0)); |
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assertEquals(0,ai.getAndSet(i,-10)); |
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assertEquals(-10,ai.getAndSet(i,1)); |
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assertEquals(1, ai.getAndSet(i, 0)); |
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assertEquals(0, ai.getAndSet(i, -10)); |
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assertEquals(-10, ai.getAndSet(i, 1)); |
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} |
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} |
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|
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.getAndAdd(i,2)); |
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assertEquals(3,ai.get(i)); |
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assertEquals(3,ai.getAndAdd(i,-4)); |
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assertEquals(-1,ai.get(i)); |
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assertEquals(1, ai.getAndAdd(i, 2)); |
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assertEquals(3, ai.get(i)); |
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assertEquals(3, ai.getAndAdd(i, -4)); |
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assertEquals(-1, ai.get(i)); |
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} |
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} |
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|
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.getAndDecrement(i)); |
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assertEquals(0,ai.getAndDecrement(i)); |
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assertEquals(-1,ai.getAndDecrement(i)); |
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assertEquals(1, ai.getAndDecrement(i)); |
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assertEquals(0, ai.getAndDecrement(i)); |
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assertEquals(-1, ai.getAndDecrement(i)); |
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} |
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} |
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|
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.getAndIncrement(i)); |
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assertEquals(2,ai.get(i)); |
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ai.set(i,-2); |
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assertEquals(-2,ai.getAndIncrement(i)); |
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assertEquals(-1,ai.getAndIncrement(i)); |
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assertEquals(0,ai.getAndIncrement(i)); |
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assertEquals(1,ai.get(i)); |
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assertEquals(1, ai.getAndIncrement(i)); |
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assertEquals(2, ai.get(i)); |
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ai.set(i, -2); |
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assertEquals(-2, ai.getAndIncrement(i)); |
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assertEquals(-1, ai.getAndIncrement(i)); |
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assertEquals(0, ai.getAndIncrement(i)); |
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assertEquals(1, ai.get(i)); |
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} |
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} |
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|
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
225 |
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ai.set(i, 1); |
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< |
assertEquals(3,ai.addAndGet(i,2)); |
227 |
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assertEquals(3,ai.get(i)); |
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assertEquals(-1,ai.addAndGet(i,-4)); |
229 |
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assertEquals(-1,ai.get(i)); |
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> |
assertEquals(3, ai.addAndGet(i, 2)); |
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> |
assertEquals(3, ai.get(i)); |
228 |
> |
assertEquals(-1, ai.addAndGet(i, -4)); |
229 |
> |
assertEquals(-1, ai.get(i)); |
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} |
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} |
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|
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
238 |
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for (int i = 0; i < SIZE; ++i) { |
239 |
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ai.set(i, 1); |
240 |
< |
assertEquals(0,ai.decrementAndGet(i)); |
241 |
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assertEquals(-1,ai.decrementAndGet(i)); |
242 |
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assertEquals(-2,ai.decrementAndGet(i)); |
243 |
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assertEquals(-2,ai.get(i)); |
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> |
assertEquals(0, ai.decrementAndGet(i)); |
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> |
assertEquals(-1, ai.decrementAndGet(i)); |
242 |
> |
assertEquals(-2, ai.decrementAndGet(i)); |
243 |
> |
assertEquals(-2, ai.get(i)); |
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} |
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} |
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|
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AtomicLongArray ai = new AtomicLongArray(SIZE); |
252 |
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for (int i = 0; i < SIZE; ++i) { |
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ai.set(i, 1); |
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assertEquals(2,ai.incrementAndGet(i)); |
255 |
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assertEquals(2,ai.get(i)); |
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> |
assertEquals(2, ai.incrementAndGet(i)); |
255 |
> |
assertEquals(2, ai.get(i)); |
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ai.set(i, -2); |
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assertEquals(-1,ai.incrementAndGet(i)); |
258 |
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assertEquals(0,ai.incrementAndGet(i)); |
259 |
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assertEquals(1,ai.incrementAndGet(i)); |
260 |
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assertEquals(1,ai.get(i)); |
257 |
> |
assertEquals(-1, ai.incrementAndGet(i)); |
258 |
> |
assertEquals(0, ai.incrementAndGet(i)); |
259 |
> |
assertEquals(1, ai.incrementAndGet(i)); |
260 |
> |
assertEquals(1, ai.get(i)); |
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} |
262 |
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} |
263 |
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|
308 |
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* a deserialized serialized array holds same values |
309 |
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*/ |
310 |
|
public void testSerialization() throws Exception { |
311 |
< |
AtomicLongArray l = new AtomicLongArray(SIZE); |
311 |
> |
AtomicLongArray x = new AtomicLongArray(SIZE); |
312 |
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for (int i = 0; i < SIZE; ++i) |
313 |
< |
l.set(i, -i); |
314 |
< |
|
315 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
316 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
318 |
< |
out.writeObject(l); |
319 |
< |
out.close(); |
320 |
< |
|
321 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
322 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
323 |
< |
AtomicLongArray r = (AtomicLongArray) in.readObject(); |
313 |
> |
x.set(i, -i); |
314 |
> |
AtomicLongArray y = serialClone(x); |
315 |
> |
assertTrue(x != y); |
316 |
> |
assertEquals(x.length(), y.length()); |
317 |
|
for (int i = 0; i < SIZE; ++i) { |
318 |
< |
assertEquals(l.get(i), r.get(i)); |
318 |
> |
assertEquals(x.get(i), y.get(i)); |
319 |
|
} |
320 |
|
} |
321 |
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|
323 |
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* toString returns current value. |
324 |
|
*/ |
325 |
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public void testToString() { |
326 |
< |
long[] a = { 17, 3, -42, 99, -7}; |
326 |
> |
long[] a = { 17, 3, -42, 99, -7 }; |
327 |
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AtomicLongArray ai = new AtomicLongArray(a); |
328 |
|
assertEquals(Arrays.toString(a), ai.toString()); |
329 |
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} |
330 |
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|
338 |
– |
|
331 |
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} |