Mercurial > hg > Members > kono > jpf-core
view src/classes/java/util/concurrent/atomic/AtomicLongFieldUpdater.java @ 0:61d41facf527
initial v8 import (history reset)
author | Peter Mehlitz <Peter.C.Mehlitz@nasa.gov> |
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date | Fri, 23 Jan 2015 10:14:01 -0800 |
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/* * Copyright (C) 2014, United States Government, as represented by the * Administrator of the National Aeronautics and Space Administration. * All rights reserved. * * The Java Pathfinder core (jpf-core) platform is licensed under the * Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0. * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package java.util.concurrent.atomic; /** * model class for the AtomicLongFieldUpdater * in reality it's an abstract class, but this here is merely a stub anyways */ public class AtomicLongFieldUpdater<T> { int fieldId; public static <O> AtomicLongFieldUpdater<O> newUpdater (Class<O> objClass, String fieldName) { return new AtomicLongFieldUpdater<O>(objClass, fieldName); } protected AtomicLongFieldUpdater(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, long expect, long update); public native long get(T obj); public native long getAndAdd(T obj, long delta); public native long getAndSet(T obj, long newValue); public native void lazySet(T obj, long newValue); public native void set(T obj, long newValue); public native boolean weakCompareAndSet(T obj, long expect, long update); public long addAndGet(T obj, long delta) {return(getAndAdd(obj, delta) + delta);} public long decrementAndGet(T obj) {return(addAndGet(obj, -1));} public long getAndDecrement(T obj) {return(getAndAdd(obj, -1));} public long getAndIncrement(T obj) {return(getAndAdd(obj, 1));} public long incrementAndGet(T obj) {return(addAndGet(obj, 1));} }