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src/os/win32/ngx_time.c - nginx source code

Functions defined

Source code


  2. /*
  3. * Copyright (C) Igor Sysoev
  4. * Copyright (C) Nginx, Inc.
  5. */


  8. #include <ngx_config.h>
  9. #include <ngx_core.h>


  12. void
  13. ‌ngx_gettimeofday(struct timeval *tp)
  14. {
  15.     uint64_t  intervals;
  16.     FILETIME  ft;

  18.     GetSystemTimeAsFileTime(&ft);

  20.     /*
  21.      * A file time is a 64-bit value that represents the number
  22.      * of 100-nanosecond intervals that have elapsed since
  23.      * January 1, 1601 12:00 A.M. UTC.
  24.      *
  25.      * Between January 1, 1970 (Epoch) and January 1, 1601 there were
  26.      * 134774 days,
  27.      * 11644473600 seconds or
  28.      * 11644473600,000,000,0 100-nanosecond intervals.
  29.      *
  30.      * See also MSKB Q167296.
  31.      */

  33.     intervals = ((uint64_t) ft.dwHighDateTime << 32) | ft.dwLowDateTime;
  34.     intervals -= 116444736000000000;

  36.     tp->tv_sec = (long) (intervals / 10000000);
  37.     tp->tv_usec = (long) ((intervals % 10000000) / 10);
  38. }


  41. void
  42. ‌ngx_libc_localtime(time_t s, struct tm *tm)
  43. {
  44.     struct tm  *t;

  46.     t = localtime(&s);
  47.     *tm = *t;
  48. }


  51. void
  52. ‌ngx_libc_gmtime(time_t s, struct tm *tm)
  53. {
  54.     struct tm  *t;

  56.     t = gmtime(&s);
  57.     *tm = *t;
  58. }


  61. ngx_int_t
  62. ‌ngx_gettimezone(void)
  63. {
  64.     u_long                 n;
  65.     TIME_ZONE_INFORMATION  tz;

  67.     n = GetTimeZoneInformation(&tz);

  69.     switch (n) {

  71.     case TIME_ZONE_ID_UNKNOWN:
  72.         return -tz.Bias;

  74.     case TIME_ZONE_ID_STANDARD:
  75.         return -(tz.Bias + tz.StandardBias);

  77.     case TIME_ZONE_ID_DAYLIGHT:
  78.         return -(tz.Bias + tz.DaylightBias);

  80.     default: /* TIME_ZONE_ID_INVALID */
  81.         return 0;
  82.     }
  83. }

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