72 lines
2.2 KiB
Java
72 lines
2.2 KiB
Java
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/*
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* java.lang.SecurityManager: part of the Java Class Libraries project.
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* Copyright (C) 1998, 2001 Free Software Foundation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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package java.lang;
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import java.net.*;
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import java.util.*;
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import java.io.*;
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/**
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** VMSecurityManager is a helper class for SecurityManager the VM must
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** implement.
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**
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** @author John Keiser
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** @version 1.1.0, 31 May 1998
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**/
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class VMSecurityManager
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{
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/** Get a list of all the classes currently executing
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** methods on the Java stack. getClassContext()[0] is
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** the currently executing method
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** <STRONG>Spec Note:</STRONG> does not say whether
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** the stack will include the getClassContext() call or
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** the one just before it.
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**
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** @return an array containing all the methods on classes
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** on the Java execution stack.
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**/
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static Class[] getClassContext()
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{
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// FIXME: can't yet implement this for libgcj.
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return new Class[0];
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}
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/** Get the current ClassLoader--the one nearest to the
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** top of the stack.
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** @return the current ClassLoader.
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**/
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static ClassLoader currentClassLoader()
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{
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// The docs above are wrong. See the online docs.
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// FIXME this implementation is a bit wrong too -- the docs say we
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// must also consider ancestors of the system class loader.
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Class[] classStack = getClassContext ();
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for (int i = 0; i < classStack.length; i++)
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{
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ClassLoader loader = classStack[i].getClassLoader();
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if (loader != null)
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return loader;
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}
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return null;
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}
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}
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