[ECOS] EL/IX discussion

[ECOS] EL/IX discussion

[ANDRE Sebastien]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 309 bytes --]

Hello all,

So, i see that the current implementation of EL/IX Layer under eCos work

only at level 1 (without all functions)

So i want know if because it we can't create more than 1 processus !?
and if in 1 processus we can create differrents threads ?

Thanks in advance.

Best regards
ANDRE Sébastien.

Re: [ECOS] EL/IX discussion

[Bart Veer]

>>>>> "Andre" == ANDRE Sebastien <sebastien.andre@sxb.bsf.alcatel.fr> writes:

    Andre> So, i see that the current implementation of EL/IX Layer
    Andre> under eCos work only at level 1 (without all functions)

    Andre> So i want know if because it we can't create more than 1
    Andre> processus !? and if in 1 processus we can create
    Andre> differrents threads ?

eCos was designed for systems where there is a single process
containing multiple threads. In other words pthread_create() is
supported, but not fork() or execve(). If you need multiple processes
then you will need an OS that supports higher levels of EL/IX, for
example some embedded Linux variant.

Similarly, if you want to develop an application for Linux with the
eventual goal of porting it to eCos, you need to restrict yourself to
the appropriate level of EL/IX functionality.

Bart

Re: [ECOS] EL/IX discussion

[ANDRE Sebastien]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 1344 bytes --]

Hello,

Thanks, yes i see that eCos is a single process system with a complete thread
activity gestion !!
it's not a major problem for us but now we must see with caution
what EL/IX level 1 functions we need and if we can use it !

So our goal is to ports few POSIX.1 applications ( Linux world applications) into
eCos and  e don't know yet all features we need in POSIX functions.

best regards
ANDRE Sébastien.

Bart Veer a écrit :

> >>>>> "Andre" == ANDRE Sebastien <sebastien.andre@sxb.bsf.alcatel.fr> writes:
>
>     Andre> So, i see that the current implementation of EL/IX Layer
>     Andre> under eCos work only at level 1 (without all functions)
>
>     Andre> So i want know if because it we can't create more than 1
>     Andre> processus !? and if in 1 processus we can create
>     Andre> differrents threads ?
>
> eCos was designed for systems where there is a single process
> containing multiple threads. In other words pthread_create() is
> supported, but not fork() or execve(). If you need multiple processes
> then you will need an OS that supports higher levels of EL/IX, for
> example some embedded Linux variant.
>
> Similarly, if you want to develop an application for Linux with the
> eventual goal of porting it to eCos, you need to restrict yourself to
> the appropriate level of EL/IX functionality.
>
> Bart