getmypid（）和posix_getpid（）之间的区别

Question

What's the difference between the getmypid() and the posix_getpid() functions?

I turned to getmypid() because my script has to run both on Windows and on Linux.

Answer 1

It seems the main difference is what you said :

• getmypid works both on windows and linux
• posix_getpid does not work on windows, as stated here

I guess the second one exists to be kinda POSIX-compliant (if there are others POSIX functions, why not this one ? )

So, if you want your code to be portable, you'll use the first one -- as you did.