Re: [Qemu-devel] [PATCH] audio: make audio poll timer deterministic

[Pavel Dovgalyuk]

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Pavel Dovgalyuk


> -----Original Message-----
> From: Pavel Dovgalyuk [mailto:address@hidden
> Sent: Tuesday, January 31, 2017 2:59 PM
> To: address@hidden
> Cc: address@hidden; address@hidden; address@hidden
> Subject: [PATCH] audio: make audio poll timer deterministic
> 
> This patch changes resetting strategy of the audio polling timer.
> It does not change expiration time if the timer is already set.
> 
> Signed-off-by: Pavel Dovgalyuk <address@hidden>
> ---
>  audio/audio.c |    6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/audio/audio.c b/audio/audio.c
> index c845a44..1ee95a5 100644
> --- a/audio/audio.c
> +++ b/audio/audio.c
> @@ -1112,8 +1112,10 @@ static int audio_is_timer_needed (void)
>  static void audio_reset_timer (AudioState *s)
>  {
>      if (audio_is_timer_needed ()) {
> -        timer_mod (s->ts,
> -            qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks);
> +        if (!timer_pending(s->ts)) {
> +            timer_mod (s->ts,
> +                qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks);
> +        }
>      }
>      else {
>          timer_del (s->ts);