[pulseaudio-discuss] rtkit: add pid as argument
launchpad.web at epost.diwic.se
Thu May 6 16:17:41 PDT 2010
On 2010-04-25 22:11, Lennart Poettering wrote:
> On Sun, 25.04.10 21:41, David Henningsson (launchpad.web at epost.diwic.se) wrote:
>>> which handle corresponds to the thread, or even if that handle is local
>>> or not. Wineserver controls this information so all requests that
>>> involve handles involve a wineserver call, in general. So racing cannot
>>> happen, because wineserver is the only one making the requests.
>> Just a question, what about RLIMIT_RTTIME, which rtkit requires to be
>> set for enabling rt? AFAIK there is no equivalent in Windows.
> Well, we enforce RLIMIT_RTTIME mostly because we can, not because it
> would really inhibit all kind of RT-related misbehaviour of the clients.
> Or in other words: RLIMIT_RTTIME is quite useful as a protection against
> programming errors somewhre, however it is still easily circumventable
> by people who really try to do evil things, unless combined with other
> tricks, such as SCHED_RESET_ON_FORK.
So let my rephrase my question to Maarten: Since there is no equivalent
to RLIMIT_RTTIME in Windows, applications might assume they can run in
RT for extended periods of time. This might be considered bad
application behavior in any operating system, but nonetheless - do we
risc regressions when these applications are being killed, instead of
the previous behavior which just let them run in non-RT?
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