C++ localtime unsafe

inline std::tm localtime_xp(std::time_t timer)
{
    std::tm bt {};
#if defined(__unix__)
    localtime_r(&timer, &bt);
#elif defined(_MSC_VER)
    localtime_s(&bt, &timer);
#else
    static std::mutex mtx;
    std::lock_guard<std::mutex> lock(mtx);
    bt = *std::localtime(&timer);
#endif
    return bt;
}

// default = "YYYY-MM-DD HH:MM:SS"
inline std::string time_stamp(const std::string& fmt = "%F %T")
{
    auto bt = localtime_xp(std::time(0));
    char buf[64];
    return {buf, std::strftime(buf, sizeof(buf), fmt.c_str(), &bt)};
}

Source: stackoverflow.com

Similar codes

1 vote270 views1 answer
Can you verify adsense no ssl certificate
C++
21 votes220 views6 answers
Convert char to string c++
C++
0 vote179 views1 answer
Interest rate parity
C++
0 vote221 views1 answer
Call function from separate bash script
C++
23 votes224 views3 answers
Flutter datetime format
C++
1 vote204 views1 answer
Std::stack
C++
1 vote238 views1 answer
Get a string from file in c++
C++
1 vote219 views1 answer
C++ multithreading
C++
0 vote202 views1 answer
Std::ofstream file1(FILE_NAME, std::ios::app);
C++
4 votes211 views2 answers
C++ function as pointer
C++