/***
* 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 java.io.InputStream;
import java.lang.reflect.Modifier;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtField;
import javassist.CtMethod;
import javassist.bytecode.Bytecode;
import javassist.bytecode.CodeIterator;
import javassist.bytecode.MethodInfo;
/**
* @author Eric Bruneton
*/
public class Javassist extends ALL {
public static void main (final String args[]) throws Exception {
System.out.println("Javassist PERFORMANCES\n");
new Javassist().perfs(args);
}
ClassPool pool;
public Javassist () {
pool = new ClassPool(null);
}
ALL newInstance () {
return new Javassist();
}
byte[] nullAdaptClass (final InputStream is, final String name)
throws Exception
{
CtClass cc = pool.makeClass(is);
CtMethod[] ms = cc.getDeclaredMethods();
for (int j = 0; j < ms.length; ++j) {
if (skipDebug) {
// is there a mean to remove the debug attributes?
}
if (compute) {
// is there a mean to force recomputation of maxStack and maxLocals?
}
}
return cc.toBytecode();
}
byte[] counterAdaptClass (final InputStream is, final String name)
throws Exception
{
CtClass cc = pool.makeClass(is);
if (!cc.isInterface()) {
cc.addField(new CtField(CtClass.intType, "_counter", cc));
}
CtMethod[] ms = cc.getDeclaredMethods();
for (int j = 0; j < ms.length; ++j) {
CtMethod m = ms[j];
int modifiers = m.getModifiers();
if (!Modifier.isStatic(modifiers) && !Modifier.isAbstract(modifiers) && !Modifier.isNative(modifiers)) {
if (!m.isEmpty()) {
MethodInfo info = m.getMethodInfo();
Bytecode bc = new Bytecode(info.getConstPool(), 1, 0);
bc.addAload(0);
bc.addAload(0);
bc.addGetfield(cc, "_counter", "I");
bc.add(Bytecode.ICONST_1);
bc.add(Bytecode.IADD);
bc.addPutfield(cc, "_counter", "I");
CodeIterator iter = info.getCodeAttribute().iterator();
iter.begin();
iter.insert(bc.get());
}
}
}
return cc.toBytecode();
}
}