xjava.lang

Class IJCE_ClassLoaderDepth

java.lang.Object

xjava.lang.IJCE_ClassLoaderDepth

public class IJCE_ClassLoaderDepth
extends java.lang.Object

This class is a gross hack. It allows IJCE to obtain the current class loader depth (the number of stack frames after the last method in this thread that was part of a class loaded by a ClassLoader).

Since ClassLoader.classLoaderDepth() is protected, and since the JDK does not allow creating a security manager after one has already been installed, this requires having code in the java.lang package.

Copyright © 1995-1997 Systemics Ltd on behalf of the Cryptix Development Team.
All rights reserved.

$Revision: 1.2 $

Since:

IJCE 1.0.1

Author:

David Hopwood

Method Summary

Modifier and Type	Method and Description
static int	classLoaderDepth() Gets the current classLoaderDepth (assuming there is a security manager installed).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

classLoaderDepth

public static int classLoaderDepth()

Gets the current classLoaderDepth (assuming there is a security manager installed). This will be 1 if this method was called directly by a class with a ClassLoader, 2 if there is one intervening stack frame, etc.

If there is no ClassLoader in the call stack of the current thread, -1 is returned. If there is no security manager installed, -2 is returned.

This should only be used to implement higher-level security primitives; never directly to make security decisions.