getpagesize() vs. sysconf(_SC_PAGESIZE)

Question

Both in general and with regard to cross-platform support, is one function -- getpagesize() vs. sysconf(_SC_PAGESIZE) -- more reliable than the other?

Laundes

Answer 1

After some additional searching, I've discovered that getpagesize() was deprecated in POSIX issue 6, and removed in POSIX issue 7. It's recommended to use sysconf(_SC_PAGESIZE) instead.

Laundes

Thanks! This is also what man getpagesize says: "In SUSv2 the getpagesize() call is labeled LEGACY, and in POSIX.1-2001 it has been dropped" and: "Portable applications should employ sysconf(_SC_PAGESIZE) instead of getpagesize()" – Inhalator