c++ - How to define thread-local local static variables?

Question

How to define local static variables (that keeps its value between function calls) that are not shared among different threads?

I am looking for an answer both in C and C++

Answer 1

on Windows using Windows API: TlsAlloc()/TlsSetValue()/TlsGetValue()

on Windows using compiler intrinsic: use _declspec(thread)

on Linux (other POSIX???) : get_thread_area() and related