1.返回的为毫秒，亲测可用
#ifdef _WIN32
#include <windows.h> #include <time.h> #else #include <sys/time.h> #endif
unsigned long long GetCurrentTimeMsec() { #ifdef _WIN32 struct timeval tv; 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); tv.tv_sec = clock; tv.tv_usec = wtm.wMilliseconds * 1000; return ((unsigned long long)tv.tv_sec * 1000 + (unsigned long long)tv.tv_usec / 1000); #else struct timeval tv; gettimeofday(&tv,NULL); return ((unsigned long long)tv.tv_sec * 1000 + (unsigned long long)tv.tv_usec / 1000); #endif }