[EMAIL PROTECTED] wrote:
>
> Hello,
>
> I've found a "undocumented feature" in the RTAI fifos (new fifos (both version 0.9a
>and 1.5)). We are unable to perform a select system call from a user-space program
>(actually this is a TCL script that use the filevent TCL feature, but if you look
> through strace you can actually see that this is a call to select with a
>filedescriptor corresponding to the FIFO). Although the real-time process perform a
>write on the FIFO, the user-space process doesn't wake-up. We observed that it sleeps
>on the select
> system call.
>
> The only work-around we had, is to have a separate user-space process that does a
>blocking read on the RT-FIFO and then we something is written, reads the RT-FIFO and
>rewrite the information on named pipe on which the script is now sleeping. This works
> but, it's not very elegant and it wastes CPU power.
Thank for the bug notice. We'll have a look at it ASAP.
Ciao, Paolo.
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