1. Introduction

CSIM+ is a process-oriented discrete-event simulation package for use with C programs. It is implemented as a library of routines which implement all of the necessary operations. The end result is a convenient tool which programmers can use to create simulation programs.

A CSIM program models a system as a collection of CSIM processes which interact with each other by using the CSIM structures. The purpose of modeling a system is to produce estimates of time and performance. The model maintains simulated time, so that the model can yield insight into the dynamic behavior of the modeled system.

This document provides a description of:

1.1. CSIM Objects

Every CSIM object is implemented in the same manner. For each CSIM structure, the program must have a declaration, which is a pointer to an object (an instance of the structure). Before an object can be used, it must be initialized by the constructor function for that kind of object. These serve the same functions as object declarations and constructors.

CSIM Processes

• processes

CSIM Objects

• facilities
• storages
• buffers
• events
• mailboxes
  

Managing queues of processes

• managing queues

Statistics, collecting data

• Introduction to statistics gathering
• tables
• qtables and qtable_dbl's
• meters
• boxes
• advanced statistics gathering
• confidence intervals and run length control
• process classes
• random numbers

Developing and managing models, output

• output from CSIM
• tracing simulation execution
• miscellaneous
• error messages

Acknowledgements
List of references
Sample program
List of statements, reserved words

It is the processes which mimic the behavior of active entities in the simulated system.

1.2. Syntax Notes

Constants, which are represented by names that are entirely in capital letters, are defined in the header file, "csim.h".

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