Introduction to Multiple User Environments

Explains the system

Organization of This Document

This programming topic contains the following articles:

Root and Login Sessions provides advanced material for daemon developers that describes the organization of the OS X process space and how that organization impacts applications.

Supporting Fast User Switching provides general guidelines for application developers on how to make your application work in a fast user switching environment.

User Switch Notifications shows you how to handle the notifications that occur when the console user changes.

If you want to know more about the login/logout process, are writing a daemon or startup item, or want to know more about the daemons that run in the root session, see Daemons and Services Programming Guide .