Re: Wiki Edits: ascii art on the anatomy of a hurd system page

[Joshua Branson]

Samuel Thibault <samuel.thibault@gnu.org> writes:

> Joshua Branson, le ven. 09 nov. 2018 11:59:31 -0500, a ecrit:
>> > It's correct, but could be improved: I'd say rather take the example of
>> > glibc's send(), which is an RPC handled by pfinet, which uses a
>> > device_write RPC to actually emit an Ethernet frame, which is handled by
>> > netdde, which pushes the hardware, and gets an interrupt from GNU Mach
>> > when that's done.
>>
>> I think the new attached patch shows that, but I'm not an expert.
>
> It's more interesting, yet not as good as it could :)

I decided to add in some color to the image.  Let me know what you
think.

0001-I-added-some-color-to-the-anatomy-image.patch
Description: color patch

>
>> +                    ---------------------------------------
>> +                    |      \     Hurd Servers             |
>> +                    |      |                              |
>> +                    |      |        auth and other servers|
>> +                    |      |                              |
>> +                    |     pfinet -> device_write RPC      |
>> +                    |      \               |              |
>> +                    |       \              |              |
>> +                    |        \             |              |
>> +                    --------------------------------------
>> +                               \          /
>> +                                \     netdde
>
> netdde is actually one of the hurd servers. I'd say either drop the Hurd
> Servers frame and use frames around pfinet and netdde, or keep the Hurd
> Servers frame, but put frames around pfinet and netdde. Otherwise it's
> misguiding, the reader could think that the "Hurd Servers" is just one
> process.
>
> pfinet itself doesn't talk with GNU Mach, it really only uses
> device_write implemented by netdde, which pushes to the hardware (after
> asking GNU Mach for permission)
>
> Samuel