/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 2 of the License.

 *

 * This program 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 for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. Look for COPYING file in the top folder.

 * If not, see http://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.bck2brwsr.tck;

import java.util.concurrent.atomic.AtomicBoolean;

import java.util.concurrent.atomic.AtomicInteger;

import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;

import java.util.concurrent.atomic.AtomicLongFieldUpdater;

import java.util.concurrent.atomic.AtomicReference;

import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;

import org.apidesign.bck2brwsr.vmtest.Compare;

import org.apidesign.bck2brwsr.vmtest.VMTest;

import org.testng.annotations.Factory;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

public class AtomicTest {

    private volatile int intValue;

    private static AtomicIntegerFieldUpdater<AtomicTest> intUpdater;

    static AtomicIntegerFieldUpdater<AtomicTest> getIntUpdater() {

        if (intUpdater == null) {

            intUpdater = AtomicIntegerFieldUpdater.newUpdater(AtomicTest.class, "intValue");

        }

        return intUpdater;

    }

    private volatile long longValue;

    private static AtomicLongFieldUpdater<AtomicTest> longUpdater;

    static AtomicLongFieldUpdater<AtomicTest> getLongUpdater() {

        if (longUpdater == null) {

            longUpdater = AtomicLongFieldUpdater.newUpdater(AtomicTest.class, "longValue");

        }

        return longUpdater;

    }

    private volatile Number refValue;

    private static AtomicReferenceFieldUpdater<AtomicTest,Number> refUpdater;

    static AtomicReferenceFieldUpdater<AtomicTest,Number> getRefUpdater() {

        if (refUpdater == null) {

            refUpdater = AtomicReferenceFieldUpdater.newUpdater(AtomicTest.class, Number.class, "refValue");

        }

        return refUpdater;

    }

    @Compare public boolean atomicBoolean() {

        AtomicBoolean ab = new AtomicBoolean();

        ab.set(true);

        return ab.compareAndSet(true, false);

    }

    @Compare public int atomicInt() {

        AtomicInteger ab = new AtomicInteger();

        ab.set(30);

        assert ab.compareAndSet(30, 10);

        return ab.get();

    }

    @Compare public String atomicRef() {

        AtomicReference<String> ar = new AtomicReference<String>("Ahoj");

        assert ar.compareAndSet("Ahoj", "Hello");

        return ar.getAndSet("Other");

    }

    @Compare public int intUpdater() {

        intValue = Integer.MAX_VALUE / 2;

        final AtomicIntegerFieldUpdater<AtomicTest> u = getIntUpdater();

        u.compareAndSet(this, 0, 10);

        u.addAndGet(this, 3);

        int thirteen = u.getAndAdd(this, 7);

        return thirteen + u.get(this);

    }

    @Compare public long longUpdater() {

        longValue = Long.MAX_VALUE / 2;

        final AtomicLongFieldUpdater<AtomicTest> u = getLongUpdater();

        u.compareAndSet(this, 0, 10);

        u.addAndGet(this, 3);

        long thirteen = u.getAndAdd(this, 7);

        return thirteen + u.get(this);

    }

    @Compare public int refUpdater() {

        final AtomicReferenceFieldUpdater<AtomicTest,Number> u = getRefUpdater();

        u.set(this, 0);

        u.compareAndSet(this, 0, 10);

        Number ten = u.getAndSet(this, 3);

        return u.get(this).intValue() + ten.intValue();

    }

    @Factory public static Object[] create() {

        return VMTest.create(AtomicTest.class);

    }

}