On 2020年12月07日 14:59, Greg Gallagher wrote:
On Sun, Dec 6, 2020 at 9:15 PM chensong via Xenomai <[email protected]
<mailto:[email protected]>> wrote:
hi Philippe,
As far as i know, some vxworks customers like xenomai because they can
move their RT processes from vxworks to linux without rewriting their
code by the help of vxworks skin.
These are legacy vxworks applications?
yes, legacy vxworks apps, i heard of that from marketing guys, they are
trying to move to linux, xenomai is a perfect alternative in this case.
i was also asked to write a demo with vxworks skin.
If we "Excluding the legacy RTOS emulators such as VxWorks", we will
lose them. It could depend on the balance of the request and effort.
It might make sense to only support the vxworks skin, would any of these
users be willing to help with support?
i'm not sure, we can talk about it when we get that place, either users
or i can apply resources in our R&D.
song
-Greg
BR
song
On 2020年12月06日 18:46, Philippe Gerum via Xenomai wrote:
>
> The common Xenomai platform specification is about defining the
> commonalities among future Xenomai releases starting from 3.3,
including
> the Xenomai 4 series based on a next generation (EVL) core. A
common API
> available to applications for issuing requests to the real-time
core is
> part of this specification.
>
> Implementing such interface would not preclude other APIs from
> co-existing in particular releases. However, use of this common API
> only would guarantee portability > Excluding the legacy RTOS
emulators such as VxWorks and pSOS, Xenomai
> 3.x provides two main APIs, a POSIX-compliant one (libcobalt) and a
> custom RTOS API aka Alchemy (libalchemy) on top of the Copperplate
> interface.
>
> PROPOSAL: Pick libcobalt as the common API defined by the CXP.
>
> As a consequence, Xenomai 4 would provide two direct interfaces
to the
> underlying EVL core: via the libevl API [1] which is readily
> available, and its own implementation of libcobalt as part of a CXP
> compliance.
>
> applications
> ....................................
> libalchemy libevl libcobalt
> | | |
> | | |
> libcopperplate | |
> | | |
> | | |
> libcobalt | |
> | | |
> v v v
> (Cobalt core) (EVL core)
> ----------- ---------
> Xenomai 3.x Xenomai 4
>
>
> Thanks,
>
> [1] https://evlproject.org/core/user-api/
>
