/*******************************************************************************
* Copyright (c) 2005 Contributors.
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v1.0
* which accompanies this distribution and is available at
* http://eclipse.org/legal/epl-v10.html
*
* Contributors:
* Alexandre Vasseur initial implementation (derivative from AspectWerkz)
*******************************************************************************/
package org.aspectj.weaver.loadtime;
import com.bea.jvm.JVMFactory;
import com.jrockit.management.rmp.RmpSocketListener;
/**
* JRockit (tested with 7SP4 and 8.1) preprocessor Adapter based on JMAPI <p/>JRockit has a low
* level API for hooking ClassPreProcessor, allowing the use of online weaving at full speed.
* Moreover, JRockit does not allow java.lang.ClassLoader overriding thru -Xbootclasspath/p option.
* <p/>The ClassPreProcessor
* implementation and all third party jars CAN reside in the standard classpath. <p/>The command
* line will look like:
* <code>"%JAVA_COMMAND%" -Xmanagement:class=org.aspectj.weaver.loadtime.JRockitAgent -cp ...</code>
* Note: there can be some NoClassDefFoundError due to classpath limitation - as described in
* http://edocs.bea.com/wls/docs81/adminguide/winservice.html <p/>In order to use the BEA JRockit
* management server (for further connection of management console or runtime analyzer), the regular
* option -Xmanagement will not have any effect prior to JRockit 8.1 SP2. Instead, use <code>-Dmanagement</code>.
*
* @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur</a>
*/
public class JRockitAgent implements com.bea.jvm.ClassPreProcessor {
/**
* Concrete preprocessor
*/
private final static ClassPreProcessor s_preProcessor;
private static boolean START_RMP_SERVER = false;
static {
START_RMP_SERVER = System.getProperties().containsKey("management");
try {
s_preProcessor = new Aj();
s_preProcessor.initialize();
} catch (Exception e) {
throw new ExceptionInInitializerError("could not initialize JRockitAgent preprocessor due to: " + e.toString());
}
}
/**
* The JMAPI ClassPreProcessor must be self registrating
*/
public JRockitAgent() {
if (START_RMP_SERVER) {
// the management server will be spawned in a new thread
/*RmpSocketListener management = */new RmpSocketListener();
}
JVMFactory.getJVM().getClassLibrary().setClassPreProcessor(this);
}
/**
* Weave a class
*
* @param caller classloader
* @param name of the class to weave
* @param bytecode original
* @return bytecode weaved
*/
public byte[] preProcess(ClassLoader caller, String name, byte[] bytecode) {
if (caller == null || caller.getParent() == null) {
return bytecode;
} else {
return s_preProcessor.preProcess(name, bytecode, caller);
}
}
}