view src/os/win32/ngx_time.c @ 6858:f39ceadf0441

Win32: minimized redefinition of intptr_t/uintptr_t. These types are available with MSVC (at least since 2003, in stddef.h), all variants of GCC (in stdint.h) and Watcom C. We need to define them only for Borland C.
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 24 Dec 2016 18:01:14 +0300
parents d620f497c50f
children f95de1361039
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


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


void
ngx_gettimeofday(struct timeval *tp)
{
    uint64_t  intervals;
    FILETIME  ft;

    GetSystemTimeAsFileTime(&ft);

    /*
     * A file time is a 64-bit value that represents the number
     * of 100-nanosecond intervals that have elapsed since
     * January 1, 1601 12:00 A.M. UTC.
     *
     * Between January 1, 1970 (Epoch) and January 1, 1601 there were
     * 134744 days,
     * 11644473600 seconds or
     * 11644473600,000,000,0 100-nanosecond intervals.
     *
     * See also MSKB Q167296.
     */

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

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


void
ngx_libc_localtime(time_t s, struct tm *tm)
{
    struct tm  *t;

    t = localtime(&s);
    *tm = *t;
}


void
ngx_libc_gmtime(time_t s, struct tm *tm)
{
    struct tm  *t;

    t = gmtime(&s);
    *tm = *t;
}


ngx_int_t
ngx_gettimezone(void)
{
    u_long                 n;
    TIME_ZONE_INFORMATION  tz;

    n = GetTimeZoneInformation(&tz);

    switch (n) {

    case TIME_ZONE_ID_UNKNOWN:
        return -tz.Bias;

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

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

    default: /* TIME_ZONE_ID_INVALID */
        return 0;
    }
}