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Date: Mon, 17 Oct 2011 14:51:21 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [PATCH 04/13] qemu-timer: more clock functions
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To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org

On 10/11/2011 06:35 AM, Paolo Bonzini wrote:
> These will be used when moving icount accounting to cpus.c.
>
> Signed-off-by: Paolo Bonzini<pbonzini@redhat.com>

Reviewed-by: Anthony Liguori <Aliguori@us.ibm.com>

Regards,

Anthony Liguori

> ---
>   qemu-timer.c |   25 +++++++++++++++++++++++++
>   qemu-timer.h |    3 +++
>   2 files changed, 28 insertions(+), 0 deletions(-)
>
> diff --git a/qemu-timer.c b/qemu-timer.c
> index e2551f3..ebb5089 100644
> --- a/qemu-timer.c
> +++ b/qemu-timer.c
> @@ -495,6 +495,31 @@ void qemu_clock_warp(QEMUClock *clock)
>       }
>   }
>
> +int64_t qemu_clock_has_timers(QEMUClock *clock)
> +{
> +    return !!clock->active_timers;
> +}
> +
> +int64_t qemu_clock_expired(QEMUClock *clock)
> +{
> +    return (clock->active_timers&&
> +            clock->active_timers->expire_time<  qemu_get_clock_ns(clock));
> +}
> +
> +int64_t qemu_clock_deadline(QEMUClock *clock)
> +{
> +    /* To avoid problems with overflow limit this to 2^32.  */
> +    int64_t delta = INT32_MAX;
> +
> +    if (clock->active_timers) {
> +        delta = clock->active_timers->expire_time - qemu_get_clock_ns(clock);
> +    }
> +    if (delta<  0) {
> +        delta = 0;
> +    }
> +    return delta;
> +}
> +
>   QEMUTimer *qemu_new_timer(QEMUClock *clock, int scale,
>                             QEMUTimerCB *cb, void *opaque)
>   {
> diff --git a/qemu-timer.h b/qemu-timer.h
> index 0a43469..4578075 100644
> --- a/qemu-timer.h
> +++ b/qemu-timer.h
> @@ -38,6 +38,9 @@ extern QEMUClock *vm_clock;
>   extern QEMUClock *host_clock;
>
>   int64_t qemu_get_clock_ns(QEMUClock *clock);
> +int64_t qemu_clock_has_timers(QEMUClock *clock);
> +int64_t qemu_clock_expired(QEMUClock *clock);
> +int64_t qemu_clock_deadline(QEMUClock *clock);
>   void qemu_clock_enable(QEMUClock *clock, int enabled);
>   void qemu_clock_warp(QEMUClock *clock);
>