//
// Copyright (C) 2007 United States Government as represented by the
// Administrator of the National Aeronautics and Space Administration
// (NASA). All Rights Reserved.
//
// This software is distributed under the NASA Open Source Agreement
// (NOSA), version 1.3. The NOSA has been approved by the Open Source
// Initiative. See the file NOSA-1.3-JPF at the top of the distribution
// directory tree for the complete NOSA document.
//
// THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
// KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
// LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
// SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
// A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
// THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
// DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
//
package java.util.concurrent.atomic;
/**
* model class for the AtomicIntegerFieldUpdater
* in reality it's an abstract class, but this here is merely a stub anyways
*/
public class AtomicIntegerFieldUpdater<T> {
int fieldId;
public static <O> AtomicIntegerFieldUpdater<O> newUpdater (Class<O> objClass, String fieldName) {
return new AtomicIntegerFieldUpdater<O>(objClass, fieldName);
}
protected AtomicIntegerFieldUpdater(Class<T> objClass, String fieldName){
// direct Object subclass, so we can directly intercept the ctor
// w/o having to call a parent ctor
}
public native boolean compareAndSet(T obj, int expect, int update);
public native int get(T obj);
public native int getAndAdd(T obj, int delta);
public native int getAndSet(T obj, int newValue);
public native void lazySet(T obj, int newValue);
public native void set(T obj, int newValue);
public native boolean weakCompareAndSet(T obj, int expect, int update);
public int addAndGet(T obj, int delta) {return(getAndAdd(obj, delta) + delta);}
public int decrementAndGet(T obj) {return(addAndGet(obj, -1));}
public int getAndDecrement(T obj) {return(getAndAdd(obj, -1));}
public int getAndIncrement(T obj) {return(getAndAdd(obj, 1));}
public int incrementAndGet(T obj) {return(addAndGet(obj, 1));}
}