jadex.bytecode.vmhacks

Interface INativeHelper

All Known Implementing Classes:

NativeHelper

public interface INativeHelper

Interface for classes implementing native helper functions. Used for utility. Various methods are used to get around restrictions, this is one of them. Therefore, do not use this directly, use VmHacks.get().

Method Summary

Modifier and Type	Method and Description
boolean	canSetAccessible() Tests if the setAccessible() method can be used.
java.lang.Class<?>	defineClass(java.lang.String name, byte[] b, java.lang.ClassLoader loader) Define a class in any ClassLoader.
void	setAccessible(java.lang.String flagname, java.lang.reflect.AccessibleObject accobj, boolean flag) Sets reflective object accessible without checks.
boolean	startInstrumentationAgent(java.lang.String jarfile) Method for starting an instrumentation agent.
boolean	tryChangeUser(java.lang.String username) Attempts to change the user of the process to the given name.

Method Detail

tryChangeUser

boolean tryChangeUser(java.lang.String username)

Attempts to change the user of the process to the given name.

Parameters:

username - The target user name.

Returns:

True, if successful, false if the attempt probably failed.

setAccessible

void setAccessible(java.lang.String flagname,
                   java.lang.reflect.AccessibleObject accobj,
                   boolean flag)

Sets reflective object accessible without checks.

Parameters:

accobj - The accessible object.

flag - The flag value.

canSetAccessible

boolean canSetAccessible()

Tests if the setAccessible() method can be used.

Returns:

True, if method can be used.

defineClass

java.lang.Class<?> defineClass(java.lang.String name,
                               byte[] b,
                               java.lang.ClassLoader loader)

Define a class in any ClassLoader.

startInstrumentationAgent

boolean startInstrumentationAgent(java.lang.String jarfile)

Method for starting an instrumentation agent.

Parameters:

jarfile - The path to the jar file of the agent.

Returns:

True, on successful start.