inux下gettimeofday函数windows替换方案

#include <time.h>#ifdef WIN32#   include <windows.h>#else#   include <sys/time.h>#endif#ifdef WIN32intgettimeofday(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