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From: Junio C Hamano <gitster@pobox.com>
To: "brian m. carlson" <sandals@crustytoothpaste.net>
Cc: git@vger.kernel.org,  Patrick Steinhardt <ps@pks.im>,
	 Ezekiel Newren <ezekielnewren@gmail.com>
Subject: Re: [PATCH 09/14] hash: expose hash context functions to Rust
Date: Thu, 30 Oct 2025 14:52:51 -0700	[thread overview]
Message-ID: <xmqqh5vg3vm4.fsf@gitster.g> (raw)
In-Reply-To: <aQPbsX-J4eKvRTar@fruit.crustytoothpaste.net> (brian m. carlson's message of "Thu, 30 Oct 2025 21:42:09 +0000")

"brian m. carlson" <sandals@crustytoothpaste.net> writes:

> On 2025-10-29 at 16:32:50, Junio C Hamano wrote:
>> "brian m. carlson" <sandals@crustytoothpaste.net> writes:
>> 
>> > +struct git_hash_ctx *git_hash_alloc(void)
>> > +{
>> > +	return malloc(sizeof(struct git_hash_ctx));
>> > +}
>> 
>> Not an objection, but this looked especially curious to me because
>> it has been customary to use xmalloc() for a thing like this.  Going
>> forward, is our intention that we'd explicitly handle OOM allocation
>> failures ourselves, at least in the Rust part of the code base?
>
> No, I'll change this to use `xmalloc`.  Rust handles allocation itself
> and just panics on OOM, so we will not want to handle allocation
> failures ourselves.

Thanks.

And re-reading what I wrote, it does not make much sense, as we
would want the integration go in both direction.  I should try hard
to get out of this mentality of talking about C-part and Rust-part
of the system.  What is allocated in one side needs to be able to go
to the other side and then come back seamlessly.


  reply	other threads:[~2025-10-30 21:52 UTC|newest]

Thread overview: 101+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-27  0:43 [PATCH 00/14] SHA-1/SHA-256 interoperability, part 2 brian m. carlson
2025-10-27  0:43 ` [PATCH 01/14] repository: require Rust support for interoperability brian m. carlson
2025-10-28  9:16   ` Patrick Steinhardt
2025-10-27  0:43 ` [PATCH 02/14] conversion: don't crash when no destination algo brian m. carlson
2025-10-27  0:43 ` [PATCH 03/14] hash: use uint32_t for object_id algorithm brian m. carlson
2025-10-28  9:16   ` Patrick Steinhardt
2025-10-28 18:28     ` Ezekiel Newren
2025-10-28 19:33     ` Junio C Hamano
2025-10-28 19:58       ` Ezekiel Newren
2025-10-28 20:20         ` Junio C Hamano
2025-10-30  0:23       ` brian m. carlson
2025-10-30  1:58         ` Collin Funk
2025-11-03  1:30           ` brian m. carlson
2025-10-29  0:33     ` brian m. carlson
2025-10-29  9:07       ` Patrick Steinhardt
2025-10-27  0:43 ` [PATCH 04/14] rust: add a ObjectID struct brian m. carlson
2025-10-28  9:17   ` Patrick Steinhardt
2025-10-28 19:07     ` Ezekiel Newren
2025-10-29  0:42       ` brian m. carlson
2025-10-28 19:40     ` Junio C Hamano
2025-10-29  0:47       ` brian m. carlson
2025-10-29  0:36     ` brian m. carlson
2025-10-29  9:08       ` Patrick Steinhardt
2025-10-30  0:32         ` brian m. carlson
2025-10-27  0:43 ` [PATCH 05/14] rust: add a hash algorithm abstraction brian m. carlson
2025-10-28  9:18   ` Patrick Steinhardt
2025-10-28 17:09     ` Ezekiel Newren
2025-10-28 20:00   ` Junio C Hamano
2025-10-28 20:03     ` Ezekiel Newren
2025-10-29 13:27       ` Junio C Hamano
2025-10-29 14:32         ` Junio C Hamano
2025-10-27  0:43 ` [PATCH 06/14] hash: add a function to look up hash algo structs brian m. carlson
2025-10-28  9:18   ` Patrick Steinhardt
2025-10-28 20:12   ` Junio C Hamano
2025-11-04  1:48     ` brian m. carlson
2025-11-04 10:24       ` Junio C Hamano
2025-10-27  0:43 ` [PATCH 07/14] csum-file: define hashwrite's count as a uint32_t brian m. carlson
2025-10-28 17:22   ` Ezekiel Newren
2025-10-27  0:43 ` [PATCH 08/14] write-or-die: add an fsync component for the loose object map brian m. carlson
2025-10-27  0:43 ` [PATCH 09/14] hash: expose hash context functions to Rust brian m. carlson
2025-10-29 16:32   ` Junio C Hamano
2025-10-30 21:42     ` brian m. carlson
2025-10-30 21:52       ` Junio C Hamano [this message]
2025-10-27  0:44 ` [PATCH 10/14] rust: add a build.rs script for tests brian m. carlson
2025-10-28  9:18   ` Patrick Steinhardt
2025-10-28 17:42     ` Ezekiel Newren
2025-10-29 16:43   ` Junio C Hamano
2025-10-29 22:10     ` Ezekiel Newren
2025-10-29 23:12       ` Junio C Hamano
2025-10-30  6:26         ` Patrick Steinhardt
2025-10-30 13:54           ` Junio C Hamano
2025-10-31 22:43             ` Ezekiel Newren
2025-11-01 11:18               ` Junio C Hamano
2025-10-27  0:44 ` [PATCH 11/14] rust: add functionality to hash an object brian m. carlson
2025-10-28  9:18   ` Patrick Steinhardt
2025-10-29  0:53     ` brian m. carlson
2025-10-29  9:07       ` Patrick Steinhardt
2025-10-28 18:05   ` Ezekiel Newren
2025-10-29  1:05     ` brian m. carlson
2025-10-29 16:02       ` Ben Knoble
2025-10-27  0:44 ` [PATCH 12/14] rust: add a new binary loose object map format brian m. carlson
2025-10-28  9:18   ` Patrick Steinhardt
2025-10-29  1:37     ` brian m. carlson
2025-10-29  9:07       ` Patrick Steinhardt
2025-10-29 17:03   ` Junio C Hamano
2025-10-29 18:21   ` Junio C Hamano
2025-10-27  0:44 ` [PATCH 13/14] rust: add a small wrapper around the hashfile code brian m. carlson
2025-10-28 18:19   ` Ezekiel Newren
2025-10-29  1:39     ` brian m. carlson
2025-10-27  0:44 ` [PATCH 14/14] object-file-convert: always make sure object ID algo is valid brian m. carlson
2025-10-29 20:07 ` [PATCH 00/14] SHA-1/SHA-256 interoperability, part 2 Junio C Hamano
2025-10-29 20:15   ` Junio C Hamano
2025-11-11  0:12 ` Ezekiel Newren
2025-11-14 17:25 ` Junio C Hamano
2025-11-14 21:11   ` Junio C Hamano
2025-11-17  6:56   ` Junio C Hamano
2025-11-17 22:09     ` brian m. carlson
2025-11-18  0:13       ` Junio C Hamano
2025-11-19 23:04         ` brian m. carlson
2025-11-19 23:24           ` Junio C Hamano
2025-11-19 23:37           ` Ezekiel Newren
2025-11-20 19:52             ` Ezekiel Newren
2025-11-20 23:02               ` brian m. carlson
2025-11-20 23:11                 ` Ezekiel Newren
2025-11-20 23:14                   ` Junio C Hamano
2025-11-17 22:16 ` [PATCH v2 00/15] " brian m. carlson
2025-11-17 22:16   ` [PATCH v2 01/15] repository: require Rust support for interoperability brian m. carlson
2025-11-17 22:16   ` [PATCH v2 02/15] conversion: don't crash when no destination algo brian m. carlson
2025-11-17 22:16   ` [PATCH v2 03/15] hash: use uint32_t for object_id algorithm brian m. carlson
2025-11-17 22:16   ` [PATCH v2 04/15] rust: add a ObjectID struct brian m. carlson
2025-11-17 22:16   ` [PATCH v2 05/15] rust: add a hash algorithm abstraction brian m. carlson
2025-11-17 22:16   ` [PATCH v2 06/15] hash: add a function to look up hash algo structs brian m. carlson
2025-11-17 22:16   ` [PATCH v2 07/15] rust: add additional helpers for ObjectID brian m. carlson
2025-11-17 22:16   ` [PATCH v2 08/15] csum-file: define hashwrite's count as a uint32_t brian m. carlson
2025-11-17 22:16   ` [PATCH v2 09/15] write-or-die: add an fsync component for the object map brian m. carlson
2025-11-17 22:16   ` [PATCH v2 10/15] hash: expose hash context functions to Rust brian m. carlson
2025-11-17 22:16   ` [PATCH v2 11/15] rust: add a build.rs script for tests brian m. carlson
2025-11-17 22:16   ` [PATCH v2 12/15] rust: add functionality to hash an object brian m. carlson
2025-11-17 22:16   ` [PATCH v2 13/15] rust: add a new binary object map format brian m. carlson
2025-11-17 22:16   ` [PATCH v2 14/15] rust: add a small wrapper around the hashfile code brian m. carlson
2025-11-17 22:16   ` [PATCH v2 15/15] object-file-convert: always make sure object ID algo is valid brian m. carlson

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