Memory Allocation, Default memory allocation strategy on Linux? (lemmy.world)

submitted 1 year ago by ComplexLotus@lemmy.world to c/asklemmy@lemmy.ml

3 comments fedilink hide all child comments

I lately learned about memory allocations and use of malloc. The malloc command is defined in the POSIX standard, as can be seen here It says

The order and contiguity of storage allocated by successive calls to malloc() is unspecified.

So what is the default allocation strategy malloc uses on Linux. Is that allocation strategy different then from windows/ macOS or Android?

I heard malloc on Linux uses the Buddy memory allocation strategy is that true, since on wiki it only says the Linux Kernel uses it, but not Linux itself, idk?

top 2 comments

sorted by: hot top controversial new old

[-] fiasco@possumpat.io 4 points 1 year ago

Userland malloc comes from libc, which is most likely glibc. Maybe this will tell you what you wanna know: https://sourceware.org/glibc/wiki/MallocInternals

[-] GodHimself@lemmy.world 3 points 1 year ago* (last edited 1 year ago)

Not to be "that guy" but just FYI Linux IS the kernel. Everything else you use on top of it (the shell, commands, UI, etc) are just GNU (For shell stuff) and packages.

That's why you may see Linux referred to as "GNU/Linux" aka the Linux kernel with all the standard GNU tools included.

As for Mallorca, I dunno

load more comments

this post was submitted on 07 Jul 2023

14 points (93.8% liked)

Asklemmy

42601 readers

1221 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
!lemmy411@lemmy.ca: a community for finding communities

~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~

founded 5 years ago

MODERATORS

ada@lemmy.blahaj.zone

AdaShovelace@lemmy.ml