// // 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 AtomicReferenceFieldUpdater * in reality it's an abstract class, but this here is merely a stub anyways */ public class AtomicReferenceFieldUpdater<T,V> { int fieldId; public static <O,F> AtomicReferenceFieldUpdater<O,F> newUpdater (Class<O> objClass, Class<F> fieldClass, String fieldName) { return new AtomicReferenceFieldUpdater<O,F>(objClass, fieldClass, fieldName); } protected AtomicReferenceFieldUpdater(Class<T> objClass, Class<V> fieldClass, 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, V expect, V update); public native V get(T obj); public native V getAndSet(T obj, V newValue); public native void lazySet(T obj, V newValue); public native void set(T obj, V newValue); public native boolean weakCompareAndSet(T obj, V expect, V update); }