glencornell / cyclictest-ada

Cyclictest program written in Ada.

cyclictest-ada

Cyclictest program written in Ada.

Overview

This program is a (very) simplified version of the cyclictest program. My objectives when writing this program were to:

1. learn how to utilize Ada native language real-time features and

2. to create an Ada program that performs properly on a POSIX.4 real-time compliant operating system utilizing as little OS-specific real-time features as possible.

In this manner, one can use this code as one possible implementation for portable real-time applications in Ada on POSIX-compliant operating systems.

The following was used as a reference guide for the creation of this program:

https://wiki.linuxfoundation.org/realtime/documentation/howto/applications/application_base

This application also serves as a test that measures the jitter of a real-time Ada application on your system, similar to the cyclictest program distributed with the rt-tests package.

Compiling

gprbuild -P cyclictest.gpr cyclictest

Running

./cyclictest

Notes

The program should be run as root (to lock process virtual memory in RAM and set task priority).

TODO

• Add a sigint handler to prevent the program from being interrupted.

• Create an uninstrumented form of the generic_instrumented_cyclic_tasks package.

• Add processor affinity to the task as a creation option.

• Add an option to print out a histogram of jitter samples.