instrumentation.InstrumentationClassAdapter.java Source code

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Here is the source code for instrumentation.InstrumentationClassAdapter.java

Source

/*
 Created by Horatiu Jula, George Candea, Daniel Tralamazza, Cristian Zamfir
 Copyright (C) 2009 EPFL (Ecole Polytechnique Federale de Lausanne)
    
 This file is part of Dimmunix.
    
 Dimmunix is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
 Free Software Foundation, either version 3 of the License, or (at
 your option) any later version.
    
 Dimmunix is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 General Public License for more details.
    
 You should have received a copy of the GNU General Public
 License along with Dimmunix. If not, see http://www.gnu.org/licenses/.
    
 EPFL
 Dependable Systems Lab (DSLAB)
 Room 330, Station 14
 1015 Lausanne
 Switzerland
*/

package instrumentation;

import org.objectweb.asm.ClassAdapter;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

public class InstrumentationClassAdapter extends ClassAdapter {

    private ClassTransformer clTrans;

    public InstrumentationClassAdapter(ClassVisitor arg0, ClassTransformer clTrans) {
        super(arg0);
        // System.out.println("class to visit: "+ClassTransformer.className());
        this.clTrans = clTrans;
    }

    public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
        MethodVisitor mv;
        boolean sync = ((access & Opcodes.ACC_SYNCHRONIZED) != 0);
        boolean stat = ((access & Opcodes.ACC_STATIC) != 0);
        //boolean nat = ((access & Opcodes.ACC_NATIVE) != 0); 

        //remove sync modifier if method is not native
        if (sync && clTrans.canRemoveSyncModifier) {
            access ^= Opcodes.ACC_SYNCHRONIZED;
        }
        mv = cv.visitMethod(access, name, desc, signature, exceptions);
        if (name.equals("<init>")) {
            return mv;
        }
        if (mv != null) {
            mv = new InstrumentationMethodAdapter(mv, sync, stat);
        }

        return mv;
    }

}