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

0 vote193 views1 answer
Replace komma with space C++
C++
0 vote195 views1 answer
Road sign detection and recognition by OpenCV in c
C++
0 vote179 views2 answers
Sort using comparator anonymous function c++
C++
0 vote221 views1 answer
C++ generate random number upper and lower bound
C++
1 vote202 views1 answer
Ifstream relative file path
C++
0 vote192 views1 answer
How to have a queue as a parameter in c++
C++
5 votes193 views3 answers
Cpp random number in range
C++
0 vote255 views1 answer
How to find product of a given numbers in c++
C++
0 vote190 views1 answer
Convert all strings in vector to lowercase or uppercase c++
C++
0 vote214 views1 answer
Decimal to binary gfg
C++