Re: [Qemu-devel] [RFC PATCH v9 12/23] timer: replace time() with QEMU_CLOCK_HOST

[Paolo Bonzini <pbonzini@redhat.com>]

On 18/02/2015 12:56, Pavel Dovgalyuk wrote:
> This patch replaces time() function calls with calls to
> qemu_clock_get_ns(QEMU_CLOCK_HOST). It makes such requests deterministic
> in record/replay mode of icount.
> 
> Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

> ---
>  vl.c |   12 ++++++++----
>  1 files changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/vl.c b/vl.c
> index 8c8f142..00161f4 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -710,13 +710,17 @@ void vm_start(void)
>  /***********************************************************/
>  /* real time host monotonic timer */
>  
> +static time_t qemu_time(void)
> +{
> +    return qemu_clock_get_ms(QEMU_CLOCK_HOST) / 1000;
> +}
> +
>  /***********************************************************/
>  /* host time/date access */
>  void qemu_get_timedate(struct tm *tm, int offset)
>  {
> -    time_t ti;
> +    time_t ti = qemu_time();
>  
> -    time(&ti);
>      ti += offset;
>      if (rtc_date_offset == -1) {
>          if (rtc_utc)
> @@ -744,7 +748,7 @@ int qemu_timedate_diff(struct tm *tm)
>      else
>          seconds = mktimegm(tm) + rtc_date_offset;
>  
> -    return seconds - time(NULL);
> +    return seconds - qemu_time();
>  }
>  
>  static void configure_rtc_date_offset(const char *startdate, int legacy)
> @@ -782,7 +786,7 @@ static void configure_rtc_date_offset(const char *startdate, int legacy)
>                              "'2006-06-17T16:01:21' or '2006-06-17'\n");
>              exit(1);
>          }
> -        rtc_date_offset = time(NULL) - rtc_start_date;
> +        rtc_date_offset = qemu_time() - rtc_start_date;
>      }
>  }
>  
> 
> 
>