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Viewing changes to ports/winnt/ntpd/nt_clockstuff.c

  • Committer: Package Import Robot
  • Author(s): Peter Eisentraut
  • Date: 2012-02-27 13:55:56 UTC
  • mfrom: (1.2.12)
  • Revision ID: package-import@ubuntu.com-20120227135556-dkx4mkod5trl5bgt
Tags: 1:4.2.6.p5+dfsg-1
http://bugs.debian.org/644673
* New upstream release (closes: #644673)
* Updated instructions on generating autotools.patch
* Updated standards version

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ports/winnt/ntpd/nt_clockstuff.c
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static DOUBLE ppm_per_adjust_unit = 0.0;
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/*
 
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 * wintickadj emulates the functionality provided by unix tickadj,
 
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 * providing a baseline clock correction if needed to get the
 
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 * clock within a few hundred PPM of correct frequency.
 
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 */
 
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static long wintickadj;
 
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/*
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 * performance counter frequency observations
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 */
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#define TUNE_CTR_DEPTH          3       /* running avg depth */
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        /* only adjust the clock if adjustment changes */
 
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        TimeAdjustment += wintickadj;
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        if (last_Adj != TimeAdjustment) {
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                last_Adj = TimeAdjustment;
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                DPRINTF(1, ("SetSystemTimeAdjustment(%+ld)\n", TimeAdjustment));
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        LARGE_INTEGER Freq;
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        FT_ULL initial_hectonanosecs;
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        FT_ULL next_hectonanosecs;
 
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        double adjppm;
 
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        double rawadj;
 
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        char * pch;
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        if (winnt_time_initialized)
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                return;
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                (LONGLONG)os_clock_precision / 1e4, 
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                ppm_per_adjust_unit);
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        pch = getenv("NTPD_TICKADJ_PPM");
 
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        if (pch != NULL && 1 == sscanf(pch, "%lf", &adjppm)) {
 
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                rawadj = adjppm / ppm_per_adjust_unit;
 
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                rawadj += (rawadj < 0)
 
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                              ? -0.5
 
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                              : 0.5;
 
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                wintickadj = (long)rawadj;
 
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                msyslog(LOG_INFO,
 
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                        "Using NTPD_TICKADJ_PPM %+g ppm (%+ld)",
 
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                        adjppm, wintickadj);
 
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        }
 
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        winnt_time_initialized = TRUE;
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        choose_interp_counter();