inux下gettimeofday函数windows替换方法(详解)

实例如下：

#include <time.h>
#ifdef win32
#  include <windows.h>
#else
#  include <sys/time.h>
#endif
#ifdef win32
int
gettimeofday(struct timeval *tp, void *tzp)
{
  time_t clock;
  struct tm tm;
  systemtime wtm;
  getlocaltime(&wtm);
  tm.tm_year   = wtm.wyear - 1900;
  tm.tm_mon   = wtm.wmonth - 1;
  tm.tm_mday   = wtm.wday;
  tm.tm_hour   = wtm.whour;
  tm.tm_min   = wtm.wminute;
  tm.tm_sec   = wtm.wsecond;
  tm. tm_isdst  = -1;
  clock = mktime(&tm);
  tp->tv_sec = clock;
  tp->tv_usec = wtm.wmilliseconds * 1000;
  return (0);
}
#endif

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