/**

  * Copyright (2008) Schibsted Søk AS

  * This file is part of Sesat Commons.

  *

  *   Sesat Commons is free software: you can redistribute it and/or modify

  *   it under the terms of the GNU Lesser General Public License as published by

  *   the Free Software Foundation, either version 3 of the License, or

  *   (at your option) any later version.

  *

  *   Sesat Commons 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 Lesser General Public License for more details.

  *

  *   You should have received a copy of the GNU Lesser General Public License

  *   along with Sesat Commons.  If not, see <http://www.gnu.org/licenses/>.

  *

  */

 package no.sesat;

 import java.lang.instrument.*;

 import no.sesat.Interpreter;

 public class Agent {

     public static void premain(String agentArgs, final Instrumentation inst) {

         Interpreter.addFunction("loaded-classes", new Interpreter.Function() {

             public String execute(final Interpreter.Context ctx) {

                 String res = "Loaded:\n";

                 for (Class<?> c : inst.getAllLoadedClasses()) {

                     if (ctx.length() == 1 && !c.getName().matches(ctx.getArgument(0))) {

                         continue;

                     }

                     long size = inst.getObjectSize(c);

                     res += c.getName() + " - " + size + "\n" + c.getClassLoader() + "\n\n";

                 }

                 return res;

             }

             public String describe() {

                 return "List loaded classes. 'loaded-classes [regexp]'";

             }

         });

     }

 }