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实时操作系统RT LINUX的源代码

Autor: Ismael Ripoll.
Date:  19 Marzo,1994

	This is a  description of the   input file format used  by the
program  that  displays the simulation  of  a scheduler.   The file is
parsed by a  yacc program, in this   way, is pretty  easy  to add more
features to the displayer (program that draws the simulation).

	Is  currently avalible a  progran that  produces X graphic and
PostScript output of this kind of files (called crono).

	If you are doing some scheduling simulation and you want to see
graphicaly your results then use this format.


    File              Program          File          Program (crono)
+-------------+    +-----------+   +-----------+   +---------+
| Tasks       |--> | Simulator |-->| Simulator |-->| Graphic |--> Screen
| Description |    +-----------+   | Output    |   | Program |--> Printer
+-------------+                    +-----------+   +---------+
	

	This document describes the format of the "Simulator Output" file
read by the "Graphic program".


	BNF-like syntax of the file:
--------------------------------------------------------------------------------
FILE      ::= HEADER ":BODY" EXECUTION

HEADER    ::= HEADER    LINE_HEAD
LINE_HEAD ::= "TASK" task_num IDEN    // Assign a string to the task number
	    | "RESOURCE" res_num IDEN // Assign a string to the resource number
	    | COMMENT

EXECUTION ::= EXECUTION LINE_BODY 
LINE_BODY ::= "ACTI" task_num time_start abs_deadline   // Signal a task request 
 	    | "END"  task_num time            // Signal an activation completion
	    | "EXEC" task_num time_start time_end  // Task execution.
	    | COMMENT

COMMENT   ::= From the symbol "#". til the end of the line.
--------------------------------------------------------------------------------



	Here there is an example file:
--------------------------------------------------------------------------------
# Name: Out.sim
# Example file

TASK 1 "Clock"    # Comment after a description line.
TASK 2 "Jolts"

# This file has no resources.
# all the task must be declared before the body part.

:BODY

ACTI 1 0 40 
EXEC 1 0 5
END  1 5
ACTI 2 0 40 
EXEC 2 5 20
END  2 20
ACTI 2 80 110 
EXEC 2 80 95
ACTI 2 120 160 
EXEC 2 120 140
ACTI 1 200 230 
EXEC 1 200 220
--------------------------------------------------------------------------------