/***
* ASM performance test: measures the performances of asm package
* Copyright (c) 2002,2003 France Telecom
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.objectweb.asm.test.perf;
import org.apache.bcel.Constants;
import org.apache.bcel.classfile.ClassParser;
import org.apache.bcel.classfile.JavaClass;
import org.apache.bcel.classfile.Method;
import org.apache.bcel.generic.*;
import java.io.InputStream;
/**
* @author Eric Bruneton
*/
public class BCEL extends ALL implements Constants {
public static void main (final String args[]) throws Exception {
System.out.println("BCEL PERFORMANCES\n");
new BCEL().perfs(args);
}
ALL newInstance () {
return new BCEL();
}
byte[] nullAdaptClass (final InputStream is, final String name)
throws Exception
{
JavaClass jc = new ClassParser(is, name + ".class").parse();
ClassGen cg = new ClassGen(jc);
ConstantPoolGen cp = cg.getConstantPool();
Method[] ms = cg.getMethods();
for (int j = 0; j < ms.length; ++j) {
MethodGen mg = new MethodGen(ms[j], cg.getClassName(), cp);
boolean lv = ms[j].getLocalVariableTable() == null;
boolean ln = ms[j].getLineNumberTable() == null;
if (lv) {
mg.removeLocalVariables();
}
if (ln) {
mg.removeLineNumbers();
}
mg.stripAttributes(skipDebug);
InstructionList il = mg.getInstructionList();
if (il != null) {
InstructionHandle ih = il.getStart();
while (ih != null) {
ih = ih.getNext();
}
if (compute) {
mg.setMaxStack();
mg.setMaxLocals();
}
}
cg.replaceMethod(ms[j], mg.getMethod());
}
return cg.getJavaClass().getBytes();
}
byte[] counterAdaptClass (final InputStream is, final String name)
throws Exception
{
JavaClass jc = new ClassParser(is, name + ".class").parse();
ClassGen cg = new ClassGen(jc);
ConstantPoolGen cp = cg.getConstantPool();
if (!cg.isInterface()) {
FieldGen fg = new FieldGen(ACC_PUBLIC, Type.getType("I"), "_counter", cp);
cg.addField(fg.getField());
}
Method[] ms = cg.getMethods();
for (int j = 0; j < ms.length; ++j) {
MethodGen mg = new MethodGen(ms[j], cg.getClassName() ,cp);
if (!mg.getName().equals("<init>") &&
!mg.isStatic() && !mg.isAbstract() && !mg.isNative())
{
if (mg.getInstructionList() != null) {
InstructionList il = new InstructionList();
il.append(new ALOAD(0));
il.append(new ALOAD(0));
il.append(new GETFIELD(cp.addFieldref(name, "_counter", "I")));
il.append(new ICONST(1));
il.append(new IADD());
il.append(new PUTFIELD(cp.addFieldref(name, "_counter", "I")));
mg.getInstructionList().insert(il);
mg.setMaxStack(Math.max(mg.getMaxStack(), 2));
boolean lv = ms[j].getLocalVariableTable() == null;
boolean ln = ms[j].getLineNumberTable() == null;
if (lv) {
mg.removeLocalVariables();
}
if (ln) {
mg.removeLineNumbers();
}
cg.replaceMethod(ms[j], mg.getMethod());
}
}
}
return cg.getJavaClass().getBytes();
}
}