/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
/*
* This file is available under and governed by the GNU General Public
* License version 2 only, as published by the Free Software Foundation.
* However, the following notice accompanied the original version of this
* file:
*
* Written by Doug Lea with assistance from members of JCP JSR-166
* Expert Group and released to the public domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
*/
import java.util.concurrent.atomic.AtomicReferenceArray;
import junit.framework.Test;
import junit.framework.TestSuite;
public class AtomicReferenceArray9Test extends JSR166TestCase {
public static void main(String[] args) {
main(suite(), args);
}
public static Test suite() {
return new TestSuite(AtomicReferenceArray9Test.class);
}
/**
* get and set for out of bound indices throw IndexOutOfBoundsException
*/
public void testIndexing() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int index : new int[] { -1, SIZE }) {
final int j = index;
final Runnable[] tasks = {
() -> aa.getPlain(j),
() -> aa.getOpaque(j),
() -> aa.getAcquire(j),
() -> aa.setPlain(j, null),
() -> aa.setOpaque(j, null),
() -> aa.setRelease(j, null),
() -> aa.compareAndExchange(j, null, null),
() -> aa.compareAndExchangeAcquire(j, null, null),
() -> aa.compareAndExchangeRelease(j, null, null),
() -> aa.weakCompareAndSetPlain(j, null, null),
() -> aa.weakCompareAndSetVolatile(j, null, null),
() -> aa.weakCompareAndSetAcquire(j, null, null),
() -> aa.weakCompareAndSetRelease(j, null, null),
};
assertThrows(IndexOutOfBoundsException.class, tasks);
}
}
/**
* getPlain returns the last value set
*/
public void testGetPlainSet() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
assertEquals(one, aa.getPlain(i));
aa.set(i, two);
assertEquals(two, aa.getPlain(i));
aa.set(i, m3);
assertEquals(m3, aa.getPlain(i));
}
}
/**
* getOpaque returns the last value set
*/
public void testGetOpaqueSet() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
assertEquals(one, aa.getOpaque(i));
aa.set(i, two);
assertEquals(two, aa.getOpaque(i));
aa.set(i, m3);
assertEquals(m3, aa.getOpaque(i));
}
}
/**
* getAcquire returns the last value set
*/
public void testGetAcquireSet() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
assertEquals(one, aa.getAcquire(i));
aa.set(i, two);
assertEquals(two, aa.getAcquire(i));
aa.set(i, m3);
assertEquals(m3, aa.getAcquire(i));
}
}
/**
* get returns the last value setPlain
*/
public void testGetSetPlain() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.setPlain(i, one);
assertEquals(one, aa.get(i));
aa.setPlain(i, two);
assertEquals(two, aa.get(i));
aa.setPlain(i, m3);
assertEquals(m3, aa.get(i));
}
}
/**
* get returns the last value setOpaque
*/
public void testGetSetOpaque() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.setOpaque(i, one);
assertEquals(one, aa.get(i));
aa.setOpaque(i, two);
assertEquals(two, aa.get(i));
aa.setOpaque(i, m3);
assertEquals(m3, aa.get(i));
}
}
/**
* get returns the last value setRelease
*/
public void testGetSetRelease() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.setRelease(i, one);
assertEquals(one, aa.get(i));
aa.setRelease(i, two);
assertEquals(two, aa.get(i));
aa.setRelease(i, m3);
assertEquals(m3, aa.get(i));
}
}
/**
* compareAndExchange succeeds in changing value if equal to
* expected else fails
*/
public void testCompareAndExchange() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
assertEquals(one, aa.compareAndExchange(i, one, two));
assertEquals(two, aa.compareAndExchange(i, two, m4));
assertEquals(m4, aa.get(i));
assertEquals(m4, aa.compareAndExchange(i,m5, seven));
assertEquals(m4, aa.get(i));
assertEquals(m4, aa.compareAndExchange(i, m4, seven));
assertEquals(seven, aa.get(i));
}
}
/**
* compareAndExchangeAcquire succeeds in changing value if equal to
* expected else fails
*/
public void testCompareAndExchangeAcquire() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
assertEquals(one, aa.compareAndExchangeAcquire(i, one, two));
assertEquals(two, aa.compareAndExchangeAcquire(i, two, m4));
assertEquals(m4, aa.get(i));
assertEquals(m4, aa.compareAndExchangeAcquire(i,m5, seven));
assertEquals(m4, aa.get(i));
assertEquals(m4, aa.compareAndExchangeAcquire(i, m4, seven));
assertEquals(seven, aa.get(i));
}
}
/**
* compareAndExchangeRelease succeeds in changing value if equal to
* expected else fails
*/
public void testCompareAndExchangeRelease() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
assertEquals(one, aa.compareAndExchangeRelease(i, one, two));
assertEquals(two, aa.compareAndExchangeRelease(i, two, m4));
assertEquals(m4, aa.get(i));
assertEquals(m4, aa.compareAndExchangeRelease(i,m5, seven));
assertEquals(m4, aa.get(i));
assertEquals(m4, aa.compareAndExchangeRelease(i, m4, seven));
assertEquals(seven, aa.get(i));
}
}
/**
* repeated weakCompareAndSetPlain succeeds in changing value when equal
* to expected
*/
public void testWeakCompareAndSetPlain() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
do {} while (!aa.weakCompareAndSetPlain(i, one, two));
do {} while (!aa.weakCompareAndSetPlain(i, two, m4));
assertEquals(m4, aa.get(i));
do {} while (!aa.weakCompareAndSetPlain(i, m4, seven));
assertEquals(seven, aa.get(i));
}
}
/**
* repeated weakCompareAndSetVolatile succeeds in changing value when equal
* to expected
*/
public void testWeakCompareAndSetVolatile() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
do {} while (!aa.weakCompareAndSetVolatile(i, one, two));
do {} while (!aa.weakCompareAndSetVolatile(i, two, m4));
assertEquals(m4, aa.get(i));
do {} while (!aa.weakCompareAndSetVolatile(i, m4, seven));
assertEquals(seven, aa.get(i));
}
}
/**
* repeated weakCompareAndSetAcquire succeeds in changing value when equal
* to expected
*/
public void testWeakCompareAndSetAcquire() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
do {} while (!aa.weakCompareAndSetAcquire(i, one, two));
do {} while (!aa.weakCompareAndSetAcquire(i, two, m4));
assertEquals(m4, aa.get(i));
do {} while (!aa.weakCompareAndSetAcquire(i, m4, seven));
assertEquals(seven, aa.get(i));
}
}
/**
* repeated weakCompareAndSetRelease succeeds in changing value when equal
* to expected
*/
public void testWeakCompareAndSetRelease() {
AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);
for (int i = 0; i < SIZE; i++) {
aa.set(i, one);
do {} while (!aa.weakCompareAndSetRelease(i, one, two));
do {} while (!aa.weakCompareAndSetRelease(i, two, m4));
assertEquals(m4, aa.get(i));
do {} while (!aa.weakCompareAndSetRelease(i, m4, seven));
assertEquals(seven, aa.get(i));
}
}
}