系统时间获取

简单做个记录，避免重复工作。

#ifndef WINDOWS_PLATFORMtimeval now;gettimeofday(&now, NULL);int msec = now.tv_usec/1000;time_t curtime = time(0);tm tim =*localtime(&curtime);sprintf(str, "%4d-%2d-%2d %2d:%2d:%2d.%3d ", tim.tm_year + 1900, tim.tm_mon+1, tim.tm_mday, tim.tm_hour, tim.tm_min, tim.tm_sec, msec);#elseSYSTEMTIME localtime;::GetLocalTime(&localtime);sprintf(str, "%4d-%2d-%2d %2d:%2d:%2d.%3d ", localtime.wYear, localtime.wMonth, localtime.wDay, localtime.wHour, localtime.wMinute, localtime.wSecond, localtime.wMilliseconds);#endif