From: Alex Gaynor <alex.gaynor@gmail.com>
To: Fabio Aiuto <fabioaiuto83@gmail.com>
Cc: rust-for-linux <rust-for-linux@vger.kernel.org>
Subject: Re: Question on Box<T> smart pointer
Date: Tue, 27 Apr 2021 11:22:23 -0400 [thread overview]
Message-ID: <CAFRnB2U6cXM3V2-cFXPMXBo-BxbzBMNb=PSX9GzW2qwvSs_Fjw@mail.gmail.com> (raw)
In-Reply-To: <20210427152015.GA4653@agape.jhs>
Box<T> in the kernel allocates on the kernel heap, via kmalloc. This
is done by providing a Rust GlobalAllocator:
https://github.com/Rust-for-Linux/linux/blob/rust/rust/kernel/allocator.rs#L11
Alex
On Tue, Apr 27, 2021 at 11:20 AM Fabio Aiuto <fabioaiuto83@gmail.com> wrote:
>
> Hi all,
>
> I have a question. There's one thing I miss.
>
> If Box<T> smart pointer allows allocating space on the heap,
> how is this behaviour overridden in linux kernel Rust?
>
> I mean, in c we have all API's to allocate heap space,
> but using "pure" Box<T> in kernel space what kind of
> allocation provides?
>
> If this question is stupid I apologize in advance,
>
> thank you,
>
> fabio
--
All that is necessary for evil to succeed is for good people to do nothing.
next prev parent reply other threads:[~2021-04-27 15:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-27 15:20 Question on Box<T> smart pointer Fabio Aiuto
2021-04-27 15:22 ` Alex Gaynor [this message]
2021-04-27 15:33 ` Fabio Aiuto
2021-04-27 15:35 ` Alex Gaynor
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAFRnB2U6cXM3V2-cFXPMXBo-BxbzBMNb=PSX9GzW2qwvSs_Fjw@mail.gmail.com' \
--to=alex.gaynor@gmail.com \
--cc=fabioaiuto83@gmail.com \
--cc=rust-for-linux@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).