README


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

LITMUS^RT User-Space Library: liblitmus
=======================================

  Copyright (c) 2007 
  The University of North Carolina at Chapel Hill
  Department of Computer Science
  Real-Time Systems Group
  Dr. Anderson & students
  http://www.cs.unc.edu/~anderson/litmus-rt/

Released as open source under the terms of the GNU General Public License
(GPL). 

Overview
========
This library and the included tools provide the user-space interface to
LITMUS^RT. Real-time tasks should link against this library. The header file
"litmus.h" contains all necessary system calls and definitions to interact with
the kernel services provided for real-time tasks.

Tools
=====

* set_rt_mode {on|off}
  Enter or exit real-time mode. Real-time tasks are only scheduled by the
  kernel if the system is in real-time mode.

* showsched
  Print the name of the currently active scheduler. Schedulers are selected at
  boot time with the "rtsched=<NAME>" kernel parameter.

* rt_launch {-p <PROCESSOR>} <WCET> <PERIOD> <PROGRAM> <ARGS>...
  Launch the program <PROGRAM> as a real-time task provisioned with the given
  worst-case execution time and priod. Any additional parameters are passed on
  to the real-time task.

Install
=======
The library and the included tools  must be compiled from source. Currently,
the library and all tools are compiled by  by issuing the
command:

        $ make