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/* |
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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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|
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import java.util.concurrent.atomic.AtomicReferenceArray; |
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|
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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 AtomicReferenceArray9Test 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(AtomicReferenceArray9Test.class); |
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} |
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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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AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE); |
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for (int index : new int[] { -1, SIZE }) { |
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final int j = index; |
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assertThrows( |
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IndexOutOfBoundsException.class, |
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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, null), |
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() -> aa.setOpaque(j, null), |
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() -> aa.setRelease(j, null), |
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() -> aa.compareAndExchange(j, null, null), |
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() -> aa.compareAndExchangeAcquire(j, null, null), |
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() -> aa.compareAndExchangeRelease(j, null, null), |
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() -> aa.weakCompareAndSetPlain(j, null, null), |
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() -> aa.weakCompareAndSetVolatile(j, null, null), |
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() -> aa.weakCompareAndSetAcquire(j, null, null), |
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() -> aa.weakCompareAndSetRelease(j, null, null)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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assertEquals(one, aa.getPlain(i)); |
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aa.set(i, two); |
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assertEquals(two, aa.getPlain(i)); |
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aa.set(i, minusThree); |
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assertEquals(minusThree, aa.getPlain(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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assertEquals(one, aa.getOpaque(i)); |
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aa.set(i, two); |
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assertEquals(two, aa.getOpaque(i)); |
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aa.set(i, minusThree); |
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assertEquals(minusThree, aa.getOpaque(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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assertEquals(one, aa.getAcquire(i)); |
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aa.set(i, two); |
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assertEquals(two, aa.getAcquire(i)); |
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aa.set(i, minusThree); |
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assertEquals(minusThree, aa.getAcquire(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.setPlain(i, one); |
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assertEquals(one, aa.get(i)); |
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aa.setPlain(i, two); |
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assertEquals(two, aa.get(i)); |
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aa.setPlain(i, minusThree); |
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assertEquals(minusThree, aa.get(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.setOpaque(i, one); |
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assertEquals(one, aa.get(i)); |
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aa.setOpaque(i, two); |
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assertEquals(two, aa.get(i)); |
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aa.setOpaque(i, minusThree); |
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assertEquals(minusThree, aa.get(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.setRelease(i, one); |
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assertEquals(one, aa.get(i)); |
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aa.setRelease(i, two); |
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assertEquals(two, aa.get(i)); |
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aa.setRelease(i, minusThree); |
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assertEquals(minusThree, aa.get(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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assertEquals(one, aa.compareAndExchange(i, one, two)); |
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assertEquals(two, aa.compareAndExchange(i, two, minusFour)); |
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assertEquals(minusFour, aa.get(i)); |
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assertEquals(minusFour, aa.compareAndExchange(i,minusFive, seven)); |
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assertEquals(minusFour, aa.get(i)); |
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assertEquals(minusFour, aa.compareAndExchange(i, minusFour, seven)); |
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assertEquals(seven, aa.get(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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assertEquals(one, aa.compareAndExchangeAcquire(i, one, two)); |
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assertEquals(two, aa.compareAndExchangeAcquire(i, two, minusFour)); |
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assertEquals(minusFour, aa.get(i)); |
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assertEquals(minusFour, aa.compareAndExchangeAcquire(i,minusFive, seven)); |
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assertEquals(minusFour, aa.get(i)); |
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assertEquals(minusFour, aa.compareAndExchangeAcquire(i, minusFour, seven)); |
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assertEquals(seven, aa.get(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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assertEquals(one, aa.compareAndExchangeRelease(i, one, two)); |
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assertEquals(two, aa.compareAndExchangeRelease(i, two, minusFour)); |
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assertEquals(minusFour, aa.get(i)); |
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assertEquals(minusFour, aa.compareAndExchangeRelease(i,minusFive, seven)); |
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assertEquals(minusFour, aa.get(i)); |
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assertEquals(minusFour, aa.compareAndExchangeRelease(i, minusFour, seven)); |
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assertEquals(seven, aa.get(i)); |
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} |
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} |
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|
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/** |
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* repeated weakCompareAndSetPlain succeeds in changing value when equal |
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* to expected |
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*/ |
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public void testWeakCompareAndSetPlain() { |
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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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do {} while (!aa.weakCompareAndSetPlain(i, one, two)); |
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do {} while (!aa.weakCompareAndSetPlain(i, two, minusFour)); |
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assertEquals(minusFour, aa.get(i)); |
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do {} while (!aa.weakCompareAndSetPlain(i, minusFour, seven)); |
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assertEquals(seven, aa.get(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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do {} while (!aa.weakCompareAndSetVolatile(i, one, two)); |
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do {} while (!aa.weakCompareAndSetVolatile(i, two, minusFour)); |
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assertEquals(minusFour, aa.get(i)); |
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do {} while (!aa.weakCompareAndSetVolatile(i, minusFour, seven)); |
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assertEquals(seven, aa.get(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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do {} while (!aa.weakCompareAndSetAcquire(i, one, two)); |
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do {} while (!aa.weakCompareAndSetAcquire(i, two, minusFour)); |
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assertEquals(minusFour, aa.get(i)); |
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do {} while (!aa.weakCompareAndSetAcquire(i, minusFour, seven)); |
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assertEquals(seven, aa.get(i)); |
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} |
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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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AtomicReferenceArray<Item> aa = new AtomicReferenceArray<>(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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aa.set(i, one); |
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do {} while (!aa.weakCompareAndSetRelease(i, one, two)); |
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do {} while (!aa.weakCompareAndSetRelease(i, two, minusFour)); |
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assertEquals(minusFour, aa.get(i)); |
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do {} while (!aa.weakCompareAndSetRelease(i, minusFour, seven)); |
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assertEquals(seven, aa.get(i)); |
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} |
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} |
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|
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} |
