JPF_java_util_concurrent_atomic_AtomicIntegerArray.java

//
//Copyright (C) 2009 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 gov.nasa.jpf.vm;

import cmu.conditional.One;
import de.fosd.typechef.featureexpr.FeatureExpr;
import gov.nasa.jpf.annotation.MJI;

/**
 * native peer for java.util.concurrent.atomic.AtomicIntegerArray
 */
public class JPF_java_util_concurrent_atomic_AtomicIntegerArray extends NativePeer {

  @MJI
  public int getNative__I__I (MJIEnv env, int objRef, int index, FeatureExpr ctx) {
	  
    int arrayRef = env.getReferenceField(ctx, objRef, "array").getValue();
    return env.getIntArrayElement(arrayRef, index).getValue();
  }

  @MJI
  public boolean compareAndSetNative__III__Z (MJIEnv env, int objRef, int index, int expect, int update, FeatureExpr ctx){
	  
    int arrayRef = env.getReferenceField(ctx, objRef, "array").getValue();
    int value = env.getIntArrayElement(arrayRef, index).getValue();
    if (value == expect) {
      env.setIntArrayElement(ctx, arrayRef, index, new One<>(update));
      return true;
    } else {
      return false;
    }
  }
}