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src/os/unix/ngx_time.c - nginx-1.7.10

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. /*
  13. * FreeBSD does not test /etc/localtime change, however, we can workaround it
  14. * by calling tzset() with TZ and then without TZ to update timezone.
  15. * The trick should work since FreeBSD 2.1.0.
  16. *
  17. * Linux does not test /etc/localtime change in localtime(),
  18. * but may stat("/etc/localtime") several times in every strftime(),
  19. * therefore we use it to update timezone.
  20. *
  21. * Solaris does not test /etc/TIMEZONE change too and no workaround available.
  22. */

  24. void
  25. ‌ngx_timezone_update(void)
  26. {
  27. #if (NGX_FREEBSD)

  29.     if (getenv("TZ")) {
  30.         return;
  31.     }

  33.     putenv("TZ=UTC");

  35.     tzset();

  37.     unsetenv("TZ");

  39.     tzset();

  41. #elif (NGX_LINUX)
  42.     time_t      s;
  43.     struct tm  *t;
  44.     char        buf[4];

  46.     s = time(0);

  48.     t = localtime(&s);

  50.     strftime(buf, 4, "%H", t);

  52. #endif
  53. }


  56. void
  57. ‌ngx_localtime(time_t s, ngx_tm_t *tm)
  58. {
  59. #if (NGX_HAVE_LOCALTIME_R)
  60.     (void) localtime_r(&s, tm);

  62. #else
  63.     ngx_tm_t  *t;

  65.     t = localtime(&s);
  66.     *tm = *t;

  68. #endif

  70.     tm->ngx_tm_mon++;
  71.     tm->ngx_tm_year += 1900;
  72. }


  75. void
  76. ‌ngx_libc_localtime(time_t s, struct tm *tm)
  77. {
  78. #if (NGX_HAVE_LOCALTIME_R)
  79.     (void) localtime_r(&s, tm);

  81. #else
  82.     struct tm  *t;

  84.     t = localtime(&s);
  85.     *tm = *t;

  87. #endif
  88. }


  91. void
  92. ‌ngx_libc_gmtime(time_t s, struct tm *tm)
  93. {
  94. #if (NGX_HAVE_LOCALTIME_R)
  95.     (void) gmtime_r(&s, tm);

  97. #else
  98.     struct tm  *t;

  100.     t = gmtime(&s);
  101.     *tm = *t;

  103. #endif
  104. }

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