Re: Comments on the hurd-on-l4 document

[Yoshinori K. Okuji]

On Wednesday 08 June 2005 22:38, Marcus Brinkmann wrote:
>   BTW, I didn't think much about POSIX signals.  I think that signals
>   will still be done by sending messages directly to the tasks message
>   port, not via notifications.

I don't see why you distinguish POSIX signals from notifications. For example, 
select() can be implemented on the top of POSIX realtime signals. This 
suggests that there is no fundamental difference between them (at least 
between some of POSIX signals and notifications).

Another example is SIGWINCH. To be able to obtain SIGWINCH, a task which wants 
to receive this signal shall negotiate with a terminal task, giving a 
capability to this terminal task. For me, this looks identical to the 
notification system you describe.

Okuji