inux下gettimeofday函数windows替换方法(详解)

  #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