spring-loaded PluginUtils 源码
spring-loaded PluginUtils 代码
文件路径：/springloaded/src/main/java/org/springsource/loaded/agent/PluginUtils.java
/*
* Copyright 2010-2012 VMware and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springsource.loaded.agent;
import org.objectweb.asm.ClassReader;
public class PluginUtils {
/**
* If adding instance tracking, the classToCall must implement:
* <tt>public static void recordInstance(Object obj)</tt>.
*
* @param bytes the bytes for the class to which instance tracking is being added
* @param classToCall the class to call when a new instance is created
* @return the modified bytes for the class
*/
public static byte[] addInstanceTracking(byte[] bytes, String classToCall) {
ClassReader cr = new ClassReader(bytes);
ClassVisitingConstructorAppender ca = new ClassVisitingConstructorAppender(classToCall, "recordInstance");
cr.accept(ca, 0);
byte[] newbytes = ca.getBytes();
return newbytes;
}
}
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