From: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
To: tarantool-patches@dev.tarantool.org, alyapunov@tarantool.org,
tsafin@tarantool.org
Subject: Re: [Tarantool-patches] [PATCH small 1/1] region: new region_alloc_array, updated alloc_object
Date: Wed, 3 Jun 2020 23:27:29 +0200 [thread overview]
Message-ID: <599b3e8d-cacd-b480-0a19-158fbac417f4@tarantool.org> (raw)
In-Reply-To: <fc75e99f5b2a695c9f52db78198ea7ada7ef6a82.1590093078.git.v.shpilevoy@tarantool.org>
Still need 2 reviews here.
On 21/05/2020 22:32, Vladislav Shpilevoy wrote:
> Region's API provided a macro for aligned allocation of an object:
> region_alloc_object(). But not less frequent there is a case when
> need to allocate an array of objects, also aligned. The patch adds
> region_alloc_array() for that.
>
> Also the patch adds an out parameter 'size' for both macros. It
> simplifies total size calculation, which is needed almost always,
> because total size is included into an error message, if the
> allocation fails.
>
> Needed for https://github.com/tarantool/tarantool/issues/4609
> ---
> Branch: http://github.com/tarantool/small/tree/gerold103/region_alloc_array
> Issue: https://github.com/tarantool/tarantool/issues/4609
>
> small/region.h | 15 ++++++++++-----
> 1 file changed, 10 insertions(+), 5 deletions(-)
>
> diff --git a/small/region.h b/small/region.h
> index bea88c6..df6567d 100644
> --- a/small/region.h
> +++ b/small/region.h
> @@ -386,10 +386,15 @@ struct RegionGuard {
> };
> #endif /* __cplusplus */
>
> -#define region_reserve_object(region, T) \
> - (T *)region_aligned_reserve((region), sizeof(T), alignof(T))
> -
> -#define region_alloc_object(region, T) \
> - (T *)region_aligned_alloc((region), sizeof(T), alignof(T))
> +#define region_alloc_object(region, T, size) ({ \
> + *(size) = sizeof(T); \
> + (T *)region_aligned_alloc((region), sizeof(T), alignof(T)); \
> +})
> +
> +#define region_alloc_array(region, T, count, size) ({ \
> + int _tmp_ = sizeof(T) * (count); \
> + *(size) = _tmp_; \
> + (T *)region_aligned_alloc((region), _tmp_, alignof(T)); \
> +})
>
> #endif /* INCLUDES_TARANTOOL_SMALL_REGION_H */
>
next prev parent reply other threads:[~2020-06-03 21:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-21 20:32 Vladislav Shpilevoy
2020-05-25 6:52 ` Aleksandr Lyapunov
2020-05-27 0:00 ` Vladislav Shpilevoy
2020-06-05 12:11 ` Timur Safin
2020-06-03 21:27 ` Vladislav Shpilevoy [this message]
2020-06-05 12:12 ` Timur Safin
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=599b3e8d-cacd-b480-0a19-158fbac417f4@tarantool.org \
--to=v.shpilevoy@tarantool.org \
--cc=alyapunov@tarantool.org \
--cc=tarantool-patches@dev.tarantool.org \
--cc=tsafin@tarantool.org \
--subject='Re: [Tarantool-patches] [PATCH small 1/1] region: new region_alloc_array, updated alloc_object' \
/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
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox