win32/time.c

   1 /*
   2  * Win32 kernel functions
   3  *
   4  * Copyright 1995 Martin von Loewis and Cameron Heide
   5  */
   6
   7 #include <string.h>
   8 #include <time.h>
   9 #include <sys/time.h>
  10 #include <unistd.h>
  11 #include "windows.h"
  12 #include "winerror.h"
  13 #include "kernel32.h"
  14 #include "stddebug.h"
  15 #include "debug.h"
  16
  17 /***********************************************************************
  18  *              GetLocalTime            (KERNEL32.228)
  19  */
  20 VOID GetLocalTime(LPSYSTEMTIME systime)
  21 {
  22     time_t local_time;
  23     struct tm *local_tm;
  24     struct timeval tv;
  25
  26     gettimeofday(&tv, NULL);
  27     local_time = tv.tv_sec;
  28     local_tm = localtime(&local_time);
  29
  30     systime->wYear = local_tm->tm_year + 1900;
  31     systime->wMonth = local_tm->tm_mon + 1;
  32     systime->wDayOfWeek = local_tm->tm_wday;
  33     systime->wDay = local_tm->tm_mday;
  34     systime->wHour = local_tm->tm_hour;
  35     systime->wMinute = local_tm->tm_min;
  36     systime->wSecond = local_tm->tm_sec;
  37     systime->wMilliseconds = (tv.tv_usec / 1000) % 1000;
  38 }
  39
  40 /***********************************************************************
  41  *              GetSystemTime            (KERNEL32.285)
  42  */
  43 VOID GetSystemTime(LPSYSTEMTIME systime)
  44 {
  45     time_t local_time;
  46     struct tm *local_tm;
  47     struct timeval tv;
  48
  49     gettimeofday(&tv, NULL);
  50     local_time = tv.tv_sec;
  51     local_tm = gmtime(&local_time);
  52
  53     systime->wYear = local_tm->tm_year + 1900;
  54     systime->wMonth = local_tm->tm_mon + 1;
  55     systime->wDayOfWeek = local_tm->tm_wday;
  56     systime->wDay = local_tm->tm_mday;
  57     systime->wHour = local_tm->tm_hour;
  58     systime->wMinute = local_tm->tm_min;
  59     systime->wSecond = local_tm->tm_sec;
  60     systime->wMilliseconds = (tv.tv_usec / 1000) % 1000;
  61 }
  62
  63
  64 /***********************************************************************
  65  *              SetSystemTime            (KERNEL32.507)
  66  */
  67 BOOL SetSystemTime(const SYSTEMTIME *systime)
  68 {
  69     struct timeval tv;
  70     struct timezone tz;
  71     struct tm t;
  72     time_t sec;
  73
  74     /* call gettimeofday to get the current timezone */
  75     gettimeofday(&tv, &tz);
  76
  77     /* get the number of seconds */
  78     t.tm_sec = systime->wSecond;
  79     t.tm_min = systime->wMinute;
  80     t.tm_hour = systime->wHour;
  81     t.tm_mday = systime->wDay;
  82     t.tm_mon = systime->wMonth;
  83     t.tm_year = systime->wYear;
  84     sec = mktime (&t);
  85
  86     /* set the new time */
  87     tv.tv_sec = sec;
  88     tv.tv_usec = systime->wMilliseconds * 1000;
  89     if (settimeofday(&tv, &tz))
  90     {
  91         return FALSE;
  92     }
  93     else
  94     {
  95         return TRUE;
  96     }
  97 }
  98
  99
 100 /***********************************************************************
 101  *              GetTimeZoneInformation  (KERNEL32.302)
 102  */
 103 DWORD GetTimeZoneInformation(LPTIME_ZONE_INFORMATION tzinfo)
 104 {
 105     time_t gmt, lt;
 106
 107     memset(tzinfo, 0, sizeof(TIME_ZONE_INFORMATION));
 108
 109     gmt = time(NULL);
 110     lt = mktime(localtime(&gmt));
 111     tzinfo->Bias = (gmt - lt) / 60;
 112     tzinfo->StandardBias = 0;
 113     tzinfo->DaylightBias = -60;
 114
 115     return TIME_ZONE_ID_UNKNOWN;
 116 }
 117
 118
 119 /***********************************************************************
 120  *              SetTimeZoneInformation  (KERNEL32.515)
 121  */
 122 BOOL32 SetTimeZoneInformation(const TIME_ZONE_INFORMATION *tzinfo)
 123 {
 124     struct timezone tz;
 125
 126     tz.tz_minuteswest = tzinfo->Bias;
 127     tz.tz_dsttime = DST_NONE;
 128     return !settimeofday(NULL, &tz);
 129 }
 130
 131
 132 /***********************************************************************
 133  *              Sleep  (KERNEL32.523)
 134  */
 135 VOID Sleep(DWORD cMilliseconds)
 136 {
 137     if(cMilliseconds == INFINITE32)
 138         while(1) sleep(1000); /* Spin forever */
 139     usleep(cMilliseconds*1000);
 140 }