Cheap website hosting service by Active-Venture.com
  

Domain Registration -
Domain registration and domain transfer  service from just
$5.95/year only

 

Domain Name Registration -
Cheap domain name registration by Cheap Domain Name Registrar.

 Back to Index

3.2 Kobj Operation

Kobj works by generating descriptions of methods. Each description holds a unique id as well as a default function. The description's address is used to uniquely identify the method within a class' method table.

A class is built by creating a method table associating one or more functions with method descriptions. Before use the class is compiled. The compilation allocates a cache and associates it with the class. A unique id is assigned to each method description within the method table of the class if not already done so by another referencing class compilation. For every method to be used a function is generated by script to qualify arguments and automatically reference the method description for a lookup. The generated function looks up the method by using the unique id associated with the method description as a hash into the cache associated with the object's class. If the method is not cached the generated function proceeds to use the class' table to find the method. If the method is found then the associated function within the class is used; otherwise, the default function associated with the method description is used.

These indirections can be visualized as the following:

object->cache<->class

 

  

 

 

© 2002-2004 Active-Venture.com Website Hosting Service

 

Disclaimer: This documentation is provided only for the benefits of our website hosting customers.
For authoritative source of the documentation, please refer to http://www.freebsd.org