From: Eric Wong <e@80x24.org>
To: Junio C Hamano <gitster@pobox.com>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>,
Kevin Willford <kcwillford@gmail.com>,
git@vger.kernel.org, Kevin Willford <kewillf@microsoft.com>
Subject: Re: [[PATCH v2] 1/4] patch-ids: stop using a hand-rolled hashmap implementation
Date: Mon, 1 Aug 2016 22:34:47 +0000 [thread overview]
Message-ID: <20160801223447.GA10924@whir> (raw)
In-Reply-To: <xmqqy44gi7bp.fsf@gitster.mtv.corp.google.com>
Junio C Hamano <gitster@pobox.com> wrote:
> Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:
>
> > It would be a serious bug if hashmap_entry_init() played games with
> > references, given its signature (that this function does not have any
> > access to the hashmap structure, only to the entry itself):
> >
> > void hashmap_entry_init(void *entry, unsigned int hash)
<snip>
> I have a slight preference to avoid the lazy "void *", but that is
> an unrelated tangent.
Me too. I noticed this while working on the http-walker
speedups and my self-rejected last patch:
https://public-inbox.org/git/20160711210243.GA1604%40whir/
Extracting list_entry from list.h (currently in next[1]) and
exposing that generically as "container_of" for use with
hashmap_* would make it safer-to-use and allow structs to belong
to multiple hashmaps.
list_entry is also an alias for container_of in the Linux
kernel, but we don't have enough code using list_* to
warrant two names for the same macro.
[1] https://public-inbox.org/git/20160711205131.1291-4-e%4080x24.org/
next prev parent reply other threads:[~2016-08-01 22:35 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-29 16:19 [[PATCH v2] 0/4] Use header data patch ids for rebase to avoid loading file content Kevin Willford
2016-07-29 16:19 ` [[PATCH v2] 1/4] patch-ids: stop using a hand-rolled hashmap implementation Kevin Willford
2016-07-29 20:47 ` Junio C Hamano
2016-08-01 8:54 ` Johannes Schindelin
2016-08-01 20:04 ` Junio C Hamano
2016-08-01 22:34 ` Eric Wong [this message]
2016-08-02 10:30 ` Johannes Schindelin
2016-08-02 17:01 ` Junio C Hamano
2016-08-02 18:04 ` Junio C Hamano
2016-07-29 21:29 ` Junio C Hamano
2016-07-29 16:19 ` [[PATCH v2] 2/4] patch-ids: replace the seen indicator with a commit pointer Kevin Willford
2016-07-29 21:03 ` Junio C Hamano
2016-07-29 16:19 ` [[PATCH v2] 3/4] patch-ids: add flag to create the diff patch id using header only data Kevin Willford
2016-07-29 16:19 ` [[PATCH v2] 4/4] rebase: avoid computing unnecessary patch IDs Kevin Willford
2016-07-29 21:46 ` Junio C Hamano
2016-08-01 8:58 ` Johannes Schindelin
2016-08-01 20:11 ` Junio C Hamano
2016-08-02 9:50 ` Jakub Narębski
2016-08-02 17:06 ` Junio C Hamano
2016-08-02 10:45 ` Johannes Schindelin
2016-08-02 17:08 ` Junio C Hamano
2016-08-04 3:00 ` Junio C Hamano
2016-08-04 14:21 ` Johannes Schindelin
2016-07-29 20:22 ` [[PATCH v2] 0/4] Use header data patch ids for rebase to avoid loading file content Junio C Hamano
2016-08-01 9:01 ` Johannes Schindelin
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