GETHUGEPAGESIZE(3)

💖 GETHUGEPAGESIZE(3) 💖

okay bestie, so this one is from the Library Functions Manual and it's literally just a little guy that tells you how big your huge pages are 🫶

✨ NAME ✨

gethugepagesize — get the default huge page size, no cap

🌸 SYNOPSIS 🌸

#include <hugetlbfs.h>

long gethugepagesize(void)

like that's it. that's the whole function. no args. she takes nothing and she gives everything 💅

🦋 DESCRIPTION 🦋

okay so the gethugepagesize() function returns the default huge page size used by libhugetlbfs. ✨

and when she says "default", she means either:

• the system default, OR
• a valid value set by the environment variable HUGETLB_DEFAULT_PAGE_SIZE 👑

so yeah, if you set that env var to something valid, that's what you get back. she's not ignoring your vibe, she's honoring it fr fr.

⚠️ but heads up bestie — if the system does not support any huge page sizes, an error is returned. no huge pages, no answer, periodt. 💀

💜 RETURN VALUE 💜

• on success: the default huge page size is returned 🎀 slay
• on failure: -1 is returned and errno is set appropriately 😭

🔥 ERRORS 🔥

• ENOSYS — the system does not support huge pages. it's giving "sorry babe, not a thing here" 🙈

🌈 SEE ALSO 🌈

• libhugetlbfs(7) — go read that one too, iykyk

👑 AUTHORS 👑

libhugetlbfs was written by various people on the libhugetlbfs-devel mailing list. a whole group chat of legends, honestly. main character energy from every single one of them 💖

okay that's the whole page bestie, and just so you have the receipts: this version is from March 7, 2012, sourced from libhugetlbfs. go forth and page size responsibly ✨🎀🦋💅