114 lines
4.6 KiB
Java
114 lines
4.6 KiB
Java
/*
|
|
* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation. Oracle designates this
|
|
* particular file as subject to the "Classpath" exception as provided
|
|
* by Oracle in the LICENSE file that accompanied this code.
|
|
*
|
|
* This code 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
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
package jdk.jfr.internal.instrument;
|
|
|
|
import java.lang.reflect.Method;
|
|
import java.lang.reflect.Modifier;
|
|
import java.util.List;
|
|
|
|
import jdk.internal.org.objectweb.asm.ClassReader;
|
|
import jdk.internal.org.objectweb.asm.ClassVisitor;
|
|
import jdk.internal.org.objectweb.asm.MethodVisitor;
|
|
import jdk.internal.org.objectweb.asm.Opcodes;
|
|
import jdk.internal.org.objectweb.asm.Type;
|
|
import jdk.internal.org.objectweb.asm.tree.ClassNode;
|
|
import jdk.internal.org.objectweb.asm.tree.MethodNode;
|
|
import jdk.jfr.internal.LogLevel;
|
|
import jdk.jfr.internal.LogTag;
|
|
import jdk.jfr.internal.Logger;
|
|
|
|
@Deprecated
|
|
final class JIInliner extends ClassVisitor {
|
|
private final String targetClassName;
|
|
private final String instrumentationClassName;
|
|
private final ClassNode targetClassNode;
|
|
private final List<Method> instrumentationMethods;
|
|
|
|
/**
|
|
* A ClassVisitor which will check all methods of the class it visits against the instrumentationMethods
|
|
* list. If a method is on that list, the method will be further processed for inlining into that
|
|
* method.
|
|
*/
|
|
JIInliner(int api, ClassVisitor cv, String targetClassName, String instrumentationClassName,
|
|
ClassReader targetClassReader,
|
|
List<Method> instrumentationMethods) {
|
|
super(api, cv);
|
|
this.targetClassName = targetClassName;
|
|
this.instrumentationClassName = instrumentationClassName;
|
|
this.instrumentationMethods = instrumentationMethods;
|
|
|
|
ClassNode cn = new ClassNode(Opcodes.ASM5);
|
|
targetClassReader.accept(cn, ClassReader.EXPAND_FRAMES);
|
|
this.targetClassNode = cn;
|
|
}
|
|
|
|
@Override
|
|
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
|
|
MethodVisitor mv = super.visitMethod(access, name, desc, signature, exceptions);
|
|
|
|
if (isInstrumentationMethod(name, desc)) {
|
|
MethodNode methodToInline = findTargetMethodNode(name, desc);
|
|
if (methodToInline == null) {
|
|
throw new IllegalArgumentException("Could not find the method to instrument in the target class");
|
|
}
|
|
if (Modifier.isNative(methodToInline.access)) {
|
|
throw new IllegalArgumentException("Cannot instrument native methods: " + targetClassNode.name + "." + methodToInline.name + methodToInline.desc);
|
|
}
|
|
|
|
Logger.log(LogTag.JFR_SYSTEM_BYTECODE, LogLevel.DEBUG, "Inliner processing method " + name + desc);
|
|
|
|
JIMethodCallInliner mci = new JIMethodCallInliner(access,
|
|
desc,
|
|
mv,
|
|
methodToInline,
|
|
targetClassName,
|
|
instrumentationClassName);
|
|
return mci;
|
|
}
|
|
|
|
return mv;
|
|
}
|
|
|
|
private boolean isInstrumentationMethod(String name, String desc) {
|
|
for(Method m : instrumentationMethods) {
|
|
if (m.getName().equals(name) && Type.getMethodDescriptor(m).equals(desc)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private MethodNode findTargetMethodNode(String name, String desc) {
|
|
for (MethodNode mn : targetClassNode.methods) {
|
|
if (mn.desc.equals(desc) && mn.name.equals(name)) {
|
|
return mn;
|
|
}
|
|
}
|
|
throw new IllegalArgumentException("could not find MethodNode for "
|
|
+ name + desc);
|
|
}
|
|
}
|