Mercurial > hg > Members > kono > jpf-core

annotate src/classes/java/util/concurrent/atomic/AtomicLongFieldUpdater.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package java.util.concurrent.atomic;
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20
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21 /**
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22 * model class for the AtomicLongFieldUpdater
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23 * in reality it's an abstract class, but this here is merely a stub anyways
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24 */
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25 public class AtomicLongFieldUpdater<T> {
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26
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27 int fieldId;
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28
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29 public static <O> AtomicLongFieldUpdater<O> newUpdater (Class<O> objClass, String fieldName) {
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30 return new AtomicLongFieldUpdater<O>(objClass, fieldName);
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31 }
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32
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33 protected AtomicLongFieldUpdater(Class<T> objClass, String fieldName){
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34 // direct Object subclass, so we can directly intercept the ctor
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35 // w/o having to call a parent ctor
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36 }
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37
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38 public native boolean compareAndSet(T obj, long expect, long update);
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39 public native long get(T obj);
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40 public native long getAndAdd(T obj, long delta);
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41 public native long getAndSet(T obj, long newValue);
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42 public native void lazySet(T obj, long newValue);
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43 public native void set(T obj, long newValue);
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44 public native boolean weakCompareAndSet(T obj, long expect, long update);
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45
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46 public long addAndGet(T obj, long delta) {return(getAndAdd(obj, delta) + delta);}
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47 public long decrementAndGet(T obj) {return(addAndGet(obj, -1));}
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48 public long getAndDecrement(T obj) {return(getAndAdd(obj, -1));}
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49 public long getAndIncrement(T obj) {return(getAndAdd(obj, 1));}
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50 public long incrementAndGet(T obj) {return(addAndGet(obj, 1));}
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51 }