hudson.remoting.ImportedClassLoaderTable Maven / Gradle / Ivy

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Contains the bootstrap code to bridge separate JVMs into a single semi-shared space. Reusable outside Hudson.

There is a newer version: 3.0.3

/*******************************************************************************
 *
 * Copyright (c) 2004-2009 Oracle Corporation.
 *
 * 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://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: 
*
*    Kohsuke Kawaguchi
 *     
 *
 *******************************************************************************/ 

package hudson.remoting;

import hudson.remoting.RemoteClassLoader.IClassLoader;

import java.util.Hashtable;
import java.util.Map;

/**
 * @author Kohsuke Kawaguchi
 */
final class ImportedClassLoaderTable {
    final Channel channel;
    final Map classLoaders = new Hashtable();

    ImportedClassLoaderTable(Channel channel) {
        this.channel = channel;
    }

    public synchronized ClassLoader get(int oid) {
        return get(RemoteInvocationHandler.wrap(channel,oid,IClassLoader.class,false,false));
    }

    public synchronized ClassLoader get(IClassLoader classLoaderProxy) {
        ClassLoader r = classLoaders.get(classLoaderProxy);
        if(r==null) {
            // we need to be able to use the same hudson.remoting classes, hence delegate
            // to this class loader.
            r = RemoteClassLoader.create(getClass().getClassLoader(),classLoaderProxy);
            classLoaders.put(classLoaderProxy,r);
        }
        return r;
    }
}