Re: [9fans] syscall silently kill processes

[andrey100100100@gmail.com]

В Пн, 20/06/2022 в 04:41 +0000, adr пишет:
> On Mon, 20 Jun 2022, andrey100100100@gmail.com wrote:
> > The note 'alarm' is needed to interrupt the system call on timeout
> > since system calls to lan 9 can be of a network nature, a notes is
> > indispensable.
> > A great example of this is the read() system call on a udp-
> > connection.
> > How else can this system call be interrupted?
> 
> Start two processes, one which just make the call, another as a
> timer to kill it.

Yes, I had such an idea, but in the thread library, process IDs
increase monotonically, which is bad (due to IDs overflow) for long-
lived and actively spawning programs.

On the other hand, with process IDs, as in the kernel (reuse of IDs),
it is also required to receive group notes in case of an unexpected
termination of the child.

I.e. the problem is in identifying the processes to kill.

>  But I have something in mind for a case like
> this, when all the processes are going to use the same handler
> (that's why I was asking).

It would be great if could undo handler (delete from onnote or
something similar).

>  Let me play with it a litle before I
> share it.
> 
> adr.
> 


Regards,
Andrej

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