RTLinux (RealTimeLinux) is a simple hard real time operating system that runs Linux as its lowest priority thread. RTLinux follows the POSIX PSE51 profile in which the realtime operating system looks something like a single POSIX process, with applications as signal handlers and threads. The Linux thread provides access to all the services of a POSIX PSE54 operating system so that the hard realtime part can remain simple and fast. Programming in RTLinux is relatively straightforward: RTLinux programs are generally written as loadable kernel modules and use the pthreads API. Realtime components use signals, rt-fifos, and shared memory to communicate with Linux kernel and user programs. RTLinux also offers optional user-mode access to realtime facilities via the rtlinux_sigaction system calls.
RTLinux in source form comes as a directory rtlinux with the following files and sub-directories.
Legal notices
Credits and thanks
Basic information in text files.
Simple installation instructions
The makefiles for configuration and build.
Directory of debugger (gdb) support
Documentation, of course
Mbuff (shared memory), rt_com(serial driver) and other drivers.
Examples of RTLinux code
The realtime fifos
header files
If you patch the linux kernel (x86 and alpha)
The RTLinux core modules
RTLinux man pages
RTLinux programs to test performance
Process Signal Control (user mode RTL)
Tests to make sure RTLinux works
The basic thread scheduler and much threads support
Shell scripts for config and test
Jerry's IPC and semaphore package (v1 only)
More POSIX stuff.
RTLinux was originally implemented by Michael Barabanov from the design of Victor Yodaiken. RTLinux is now maintained by Finite State Machine Labs Inc.
Everything, including but not limited to:
| RTLinux man page index |
©2001 FSMLabs Inc.
All rights reserved.