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jsr166 |
1.1 |
/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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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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public class AtomicLongArray9Test extends JSR166TestCase { |
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public static void main(String[] args) { |
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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(AtomicLongArray9Test.class); |
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} |
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/** |
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* get and set for out of bound indices throw IndexOutOfBoundsException |
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*/ |
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public void testIndexing() { |
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AtomicLongArray aa = new AtomicLongArray(SIZE); |
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for (int index : new int[] { -1, SIZE }) { |
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final int j = index; |
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final Runnable[] tasks = { |
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() -> aa.getPlain(j), |
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() -> aa.getOpaque(j), |
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() -> aa.getAcquire(j), |
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() -> aa.setPlain(j, 1), |
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() -> aa.setOpaque(j, 1), |
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() -> aa.setRelease(j, 1), |
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() -> aa.compareAndExchange(j, 1, 2), |
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() -> aa.compareAndExchangeAcquire(j, 1, 2), |
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() -> aa.compareAndExchangeRelease(j, 1, 2), |
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() -> aa.weakCompareAndSetVolatile(j, 1, 2), |
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() -> aa.weakCompareAndSetAcquire(j, 1, 2), |
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() -> aa.weakCompareAndSetRelease(j, 1, 2), |
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}; |
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assertThrows(IndexOutOfBoundsException.class, tasks); |
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} |
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} |
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/** |
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* getPlain returns the last value set |
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*/ |
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public void testGetPlainSet() { |
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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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assertEquals(1, aa.getPlain(i)); |
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aa.set(i, 2); |
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assertEquals(2, aa.getPlain(i)); |
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aa.set(i, -3); |
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assertEquals(-3, aa.getPlain(i)); |
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} |
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} |
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/** |
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* getOpaque returns the last value set |
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*/ |
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public void testGetOpaqueSet() { |
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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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assertEquals(1, aa.getOpaque(i)); |
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aa.set(i, 2); |
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assertEquals(2, aa.getOpaque(i)); |
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aa.set(i, -3); |
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assertEquals(-3, aa.getOpaque(i)); |
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} |
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} |
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/** |
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* getAcquire returns the last value set |
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*/ |
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public void testGetAcquireSet() { |
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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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assertEquals(1, aa.getAcquire(i)); |
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aa.set(i, 2); |
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assertEquals(2, aa.getAcquire(i)); |
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aa.set(i, -3); |
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assertEquals(-3, aa.getAcquire(i)); |
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} |
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} |
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/** |
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* get returns the last value setPlain |
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*/ |
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public void testGetSetPlain() { |
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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.setPlain(i, 1); |
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assertEquals(1, aa.get(i)); |
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aa.setPlain(i, 2); |
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assertEquals(2, aa.get(i)); |
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aa.setPlain(i, -3); |
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assertEquals(-3, aa.get(i)); |
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} |
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} |
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/** |
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* get returns the last value setOpaque |
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*/ |
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public void testGetSetOpaque() { |
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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.setOpaque(i, 1); |
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assertEquals(1, aa.get(i)); |
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aa.setOpaque(i, 2); |
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assertEquals(2, aa.get(i)); |
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aa.setOpaque(i, -3); |
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assertEquals(-3, aa.get(i)); |
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} |
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} |
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/** |
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* get returns the last value setRelease |
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*/ |
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public void testGetSetRelease() { |
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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.setRelease(i, 1); |
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assertEquals(1, aa.get(i)); |
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aa.setRelease(i, 2); |
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assertEquals(2, aa.get(i)); |
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aa.setRelease(i, -3); |
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assertEquals(-3, aa.get(i)); |
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} |
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} |
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/** |
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* compareAndExchange succeeds in changing value if equal to |
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* expected else fails |
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*/ |
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public void testCompareAndExchange() { |
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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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assertEquals(1, aa.compareAndExchange(i, 1, 2)); |
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assertEquals(2, aa.compareAndExchange(i, 2, -4)); |
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assertEquals(-4, aa.get(i)); |
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assertEquals(-4, aa.compareAndExchange(i,-5, 7)); |
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assertEquals(-4, aa.get(i)); |
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assertEquals(-4, aa.compareAndExchange(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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* compareAndExchangeAcquire succeeds in changing value if equal to |
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* expected else fails |
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*/ |
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public void testCompareAndExchangeAcquire() { |
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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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assertEquals(1, aa.compareAndExchangeAcquire(i, 1, 2)); |
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assertEquals(2, aa.compareAndExchangeAcquire(i, 2, -4)); |
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assertEquals(-4, aa.get(i)); |
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assertEquals(-4, aa.compareAndExchangeAcquire(i,-5, 7)); |
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assertEquals(-4, aa.get(i)); |
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assertEquals(-4, aa.compareAndExchangeAcquire(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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* compareAndExchangeRelease succeeds in changing value if equal to |
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* expected else fails |
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*/ |
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public void testCompareAndExchangeRelease() { |
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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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assertEquals(1, aa.compareAndExchangeRelease(i, 1, 2)); |
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assertEquals(2, aa.compareAndExchangeRelease(i, 2, -4)); |
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assertEquals(-4, aa.get(i)); |
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assertEquals(-4, aa.compareAndExchangeRelease(i,-5, 7)); |
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assertEquals(-4, aa.get(i)); |
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assertEquals(-4, aa.compareAndExchangeRelease(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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* repeated weakCompareAndSetVolatile succeeds in changing value when equal |
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* to expected |
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*/ |
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public void testWeakCompareAndSetVolatile() { |
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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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do {} while (!aa.weakCompareAndSetVolatile(i, 1, 2)); |
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do {} while (!aa.weakCompareAndSetVolatile(i, 2, -4)); |
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assertEquals(-4, aa.get(i)); |
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do {} while (!aa.weakCompareAndSetVolatile(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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* repeated weakCompareAndSetAcquire succeeds in changing value when equal |
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* to expected |
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*/ |
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public void testWeakCompareAndSetAcquire() { |
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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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do {} while (!aa.weakCompareAndSetAcquire(i, 1, 2)); |
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do {} while (!aa.weakCompareAndSetAcquire(i, 2, -4)); |
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assertEquals(-4, aa.get(i)); |
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do {} while (!aa.weakCompareAndSetAcquire(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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* repeated weakCompareAndSetRelease succeeds in changing value when equal |
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* to expected |
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*/ |
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public void testWeakCompareAndSetRelease() { |
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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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do {} while (!aa.weakCompareAndSetRelease(i, 1, 2)); |
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do {} while (!aa.weakCompareAndSetRelease(i, 2, -4)); |
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assertEquals(-4, aa.get(i)); |
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do {} while (!aa.weakCompareAndSetRelease(i, -4, 7)); |
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assertEquals(7, aa.get(i)); |
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} |
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} |
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} |
