[rtl] Using user programs in MiniRTL
Hello again : I send you this e-mail to explain how your solution jobs. In my development computer I have libvga.so.1.4.0 and libm.so.6 I downloaded from the FTP adress which you gave me the libvga.so.1.3.0 and libm.so.6. Then I applied these libraries to MiniRTL an I tried to run my applications. These applications have two parts : Application 1 : A client/server structure which uses TCP/IP protocols. Application 2 : A RT modules and a user program which communicates with the RT module. Only the client of appli1 and the user program of appli2 uses libvga. The RT module and the server of appli1 don't use it. When I try to run these 4 programs in MiniRTL I obtain the next results (In my development computer all these programs job correctly): Appli 1 : Client -> Segmentation Fault Appli 1 : Server -> Segmentation Fault Appli 2 : RT module -> It jobs well Appli 2 : User Program -> Segmentation Fault Theremore, I have other question. When I run these programs I need type ./Program.If I don't type it and I type only Program, then miniRTL returns Program : Not found. Howewer, when I try to run other programs as hello I should type only hello. If I type ./hello miniRTL returns Segmentation Fault. I only think in two solutions : - I need the same version of libraries in MiniRTL and the development computer ? How should I do this ? - It is a problem of the other libraries. I send you one of my programs server.c of apli1 and the user program of apli2 for try to help you. I ask these problems to you because I think that it's a dificult problem to solve for a person who uses Linux for 6 months ago only as I. Thanks for spend your time in try to solve my problems. If you want I will send you my results when I finish my project (It will be early because I only have this problem). Regards Toni Server.c userprog.c
[rtl] shared memory
Hello RTLers I have heard about shared memory using mbuff. Can anyone who is using mbuff under RTAI point me in the direction of useful docs for installation and use of mbuff under RTAI? Thanks, Daniel Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl " | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/
[rtl] Re: your mail
Generally, your video will screw up. You could solve the problem by running a headless or dual headed Linux. On Mon, Apr 24, 2000 at 11:04:44AM -0500, daniel sheltraw wrote: > Hello rtl listees > > Can one do realtime graphics (obvious restrictions of screen refresh rate > aside) by simply writing to video memory in > ones RT kernel code. What happens when linux processes are then scheduled? > > Thanks > Daniel > > > > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com > > -- [rtl] --- > To unsubscribe: > echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR > echo "unsubscribe rtl " | mail [EMAIL PROTECTED] > --- > For more information on Real-Time Linux see: > http://www.rtlinux.org/rtlinux/ -- - Victor Yodaiken FSMLabs: www.fsmlabs.com www.rtlinux.com FSMLabs is a servicemark and a service of VJY Associates L.L.C, New Mexico. -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl " | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/
[rtl] semaphores in RTL 2.2
Hi, only a small question : when I have two RT threads, each created in a different kernel module, can I use Jerry Epplin's semaphore package to synchronize them ? If not, is there any other way I could ? E.g. can I use the Shared memory pool to exchange information between two RT threads, instead of between RT and Linux side ? Thanks, Alain. -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl " | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/
No Subject
Hello rtl listees Can one do realtime graphics (obvious restrictions of screen refresh rate aside) by simply writing to video memory in ones RT kernel code. What happens when linux processes are then scheduled? Thanks Daniel Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl " | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/
RE: [rtl] Realtime Graphics Application
The X Windowing system is non-deterministic, no re-entrant code, no priority scheduling of events, etc. While it is not impossible to make your X application behave in a deterministic manor it would be very difficult. You could not do it efficiently without a rewrite to the XServer. Thank You. Eric O. Heinicke [EMAIL PROTECTED] BAE SYSTEMSVoice:631.262.8644 Fax: 631.262.8657 One Hazeltine Way, MS 1-78 Greenlawn, NY 11740-1606 -Original Message- From: Muhammad Ali Imran [mailto:[EMAIL PROTECTED]] Sent: Sunday, April 23, 2000 03:24 To: [EMAIL PROTECTED] Subject: [rtl] Realtime Graphics Application Can we make an X-windows application realtime.. its mouse responses etc all should be realtime >From the explanation in documentation X Windows run on the linux kernel which is running as a least priority task on the rt microkernel.. I am just a beginner at rtlinux and just wanna know if its possible so I invest my time working over it. Any suggestions are appreciated Thanks and regards Muhammad Ali Imran -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl " | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/ -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl " | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/
Re: [rtl] Realtime Graphics Application
On Sun, 23 Apr 2000, Muhammad Ali Imran wrote: > Can we make an X-windows application realtime.. its mouse responses etc > all should be realtime Why do you need this? Human is not hard real time. Mouse gets input from your hand, monitor is watched by you. All delays below 10-50ms are acceptable. You can get good priority by using soft RT (setting X priority with "nice" or sched_setscheduler) and (very important) having lots of RAM. X is slow sometimes, because programs are big and sometimes are swapped out. Best regards, -- Tomek -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl " | mail [EMAIL PROTECTED] --- For more information on Real-Time Linux see: http://www.rtlinux.org/rtlinux/
