Re: Capabilities, Anybody?

On 3/15/2024 2:14 PM, Lawrence D'Oliveiro wrote:

On Fri, 15 Mar 2024 14:39:52 GMT, Scott Lurndal wrote:
 

Lawrence D'Oliveiro <ldo@nz.invalid> writes:
>

Event-driven would be more efficient and more responsive than periodic
polling.

>
That assumes that an event can be generated, which may not be possible
with a guest os crash (if, for example, it was in an infinite loop with
interrupts disabled).

 It wouldn’t be a “guest OS”, it would be a “guest container”. Remember,
the processes in the container are isolated from the host, but the host
continues to have full visibility into the guest.
 For a container, guest termination is synonymous with termination of its
guest-specific “init” (container-internal PID 1) process. A host watcher
process can monitor several of these at once via the Linux pidfd mechanism
<https://manpages.debian.org/2/pidfd_open.en.html>.

Akin to the logic that is used to make robust mutexes work. EOWNDERDEAD in POSIX or WAIT_ABANDONED over on windows...