.. _p_states:

Process Finite State Diagrams
===============================

Simple Process FSM
-------------------

.. figure:: simple_state.png
   :align: center


Unix FSM
-------------

.. figure:: unix_state.png
   :align: center

Windows FSM
-------------

.. figure:: win_state.png
   :align: center

.. note::

    The Unix and Windows FSM are more the same than they are different.  Unix
    implements multiple blocked or waiting queues that Windows does not have.
    The scheduler for Windows pre-selects the next process to run and puts that
    process in a *Standby* state.  Other than these minor differences, they are
    pretty much the same.