getrusage
=========

POSIX specification:
 https://pubs.opengroup.org/onlinepubs/9699919799/functions/getrusage.html

Gnulib module: getrusage

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: Minix 3.1.8, mingw, MSVC 14.

Portability problems not fixed by Gnulib:

  * Many platforms don't fill in all the fields of struct rusage with meaningful values.