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 vote164 views1 answer
C++ chrono get milliseconds
C++
0 vote151 views1 answer
Pascal's triangle in c++ through pointer
C++
0 vote187 views1 answer
Make an x using asterisk c++
C++
18 votes173 views3 answers
Sort in descending order c++ stl
C++
1 vote177 views1 answer
Terminal compile c++
C++
6 votes168 views3 answers
C++ dynamic array
C++
0 vote171 views1 answer
Vector int initialize with increasing numbers
C++
1 vote155 views2 answers
Reverse sort cpp
C++
13 votes177 views4 answers
How to lock and hide the cursor unity
C++
5 votes160 views2 answers
Use sleep in c in windows
C++