From: Junio C Hamano <gitster@pobox.com>
To: Patrick Steinhardt <ps@pks.im>
Cc: "John Cai via GitGitGadget" <gitgitgadget@gmail.com>,
git@vger.kernel.org, "Phillip Wood" <phillip.wood123@gmail.com>,
"Kristoffer Haugsbakk" <code@khaugsbakk.name>,
"Jeff King" <peff@peff.net>,
"Jean-Noël Avila" <avila.jn@gmail.com>,
"John Cai" <johncai86@gmail.com>
Subject: Re: [PATCH v2 1/3] refs: keep track of unresolved reference value in iterator
Date: Wed, 10 Apr 2024 08:26:13 -0700 [thread overview]
Message-ID: <xmqqwmp5xmqy.fsf@gitster.g> (raw)
In-Reply-To: <ZhY3SUdrX2WifyZf@tanuki> (Patrick Steinhardt's message of "Wed, 10 Apr 2024 08:52:57 +0200")
Patrick Steinhardt <ps@pks.im> writes:
>> const char *refs_resolve_ref_unsafe(struct ref_store *refs,
>> const char *refname,
>> + char **referent,
>> int resolve_flags,
>> struct object_id *oid,
>> int *flags)
>
> I wonder whether this really should be a `char **`. You don't seem to be
> free'ing returned pointers anywhere, so this should probably at least be
> `const char **` to indicate that memory is owned by the ref store. But
> that would require the ref store to inevitably release it, which may
> easily lead to bugs when the caller expects a different lifetime.
>
> So how about we instead make this a `struct strbuf *referent`? This
> makes it quite clear who owns the memory. Furthermore, if the caller
> wants to resolve multiple refs, it would allow them to reuse the buffer
> for better-optimized allocation patterns.
Or return an allocated piece of memory via "char **". I think an
interface that _requires_ the caller to use strbuf is not nice, if
the caller is not expected to further _edit_ the returned contents
using the strbuf API. If it is likely that the caller would want to
perform further post-processing on the result, an interface based on
strbuf is nice, but I do not think it applies to this case.
next prev parent reply other threads:[~2024-04-10 15:26 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-04 22:51 [PATCH] show-ref: add --unresolved option John Cai via GitGitGadget
2024-03-04 23:23 ` Junio C Hamano
2024-03-05 20:56 ` John Cai
2024-03-05 21:29 ` Junio C Hamano
2024-03-05 15:30 ` Phillip Wood
2024-03-05 17:01 ` Kristoffer Haugsbakk
2024-03-06 0:33 ` Jeff King
2024-03-06 2:19 ` Junio C Hamano
2024-03-06 0:41 ` Jeff King
2024-03-06 7:31 ` Patrick Steinhardt
2024-03-06 7:51 ` Jeff King
2024-03-06 16:48 ` Junio C Hamano
2024-03-06 9:36 ` Jean-Noël Avila
2024-04-08 17:38 ` [PATCH v2 0/3] show-ref: add --symbolic-name option John Cai via GitGitGadget
2024-04-08 17:38 ` [PATCH v2 1/3] refs: keep track of unresolved reference value in iterator John Cai via GitGitGadget
2024-04-08 23:02 ` Junio C Hamano
2024-04-09 20:29 ` John Cai
2024-04-10 6:52 ` Patrick Steinhardt
2024-04-10 15:26 ` Junio C Hamano [this message]
2024-04-11 9:11 ` Patrick Steinhardt
2024-04-08 17:38 ` [PATCH v2 2/3] refs: add referent to each_repo_ref_fn John Cai via GitGitGadget
2024-04-08 17:38 ` [PATCH v2 3/3] show-ref: add --symbolic-name option John Cai via GitGitGadget
2024-04-09 15:25 ` Phillip Wood
2024-04-11 19:57 ` John Cai
2024-04-12 9:37 ` phillip.wood123
2024-04-10 6:53 ` Patrick Steinhardt
2024-04-10 15:27 ` Junio C Hamano
2024-04-12 15:23 ` John Cai
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