Re: [PATCH 0/2] MR5923: winegstreamer: Use affinity to determine 'max-threads' value.

[Rémi Bernon (＠rbernon)]

Rémi Bernon (@rbernon) commented about dlls/winegstreamer/wg_parser.c:
> - if (factory)
> -
>    name = gst_element_factory_get_longname(factory);
> -
> - if (name && strstr(name, "libav H.264"))
> - {
> -
>    const gint32 MAX_THREADS = 16;
> -
>    gint32 max_threads;
> -
>
> +#ifdef HAVE_SCHED_SETAFFINITY
> -
>    gint32 thread_count;
> -
>    cpu_set_t p_aff;
> -
>    memset( &p_aff, 0, sizeof(p_aff) );
> -
>    if( sched_getaffinity( 0, sizeof(p_aff), &p_aff ) )
> -
>        thread_count = 0;
> -
>    else
> -
>        thread_count = CPU_COUNT(&p_aff);

What about using Nt functions instead? NtQueryInformationThread( ThreadBasicInformation ), and counting the bits in `info.AffinityMask`?

It could probably better be done in `wg_init_gstreamer`, as this callback may be called in a non-wine thread.