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From: Jeff King <peff@peff.net>
To: "René Scharfe" <l.s.r@web.de>
Cc: "Git List" <git@vger.kernel.org>,
	"Martin Ågren" <martin.agren@gmail.com>,
	"Christian Couder" <christian.couder@gmail.com>,
	"Junio C Hamano" <gitster@pobox.com>
Subject: Re: [PATCH v2 1/9] commit: avoid allocation in clear_commit_marks_many()
Date: Wed, 10 Jan 2018 02:54:00 -0500	[thread overview]
Message-ID: <20180110075359.GC16315@sigill.intra.peff.net> (raw)
In-Reply-To: <d37d0e0d-c703-a70c-cf0b-969e54473557@web.de>

On Mon, Dec 25, 2017 at 06:43:37PM +0100, René Scharfe wrote:

> Pass the entries of the commit array directly to clear_commit_marks_1()
> instead of adding them to a commit_list first.  The function clears the
> commit and any first parent without allocation; only higher numbered
> parents are added to a list for later treatment.  This change extends
> that optimization to clear_commit_marks_many().

It took a bit of head-scratching to see that is indeed what
clear_commit_marks_1 does. I suspect this doesn't make all that big a
difference in practice (after all, we're doing an allocation for each
merge anyway, so allocating for the tips is likely to be a subset), but
it doesn't hurt to do so.

-Peff

  reply	other threads:[~2018-01-10  7:54 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-16 12:12 [PATCH] revision: introduce prepare_revision_walk_extended() René Scharfe
2017-12-17 10:20 ` Martin Ågren
2017-12-18 15:10 ` Jeff King
2017-12-18 19:18   ` René Scharfe
2017-12-19 11:49     ` Jeff King
2017-12-19 18:33       ` Junio C Hamano
2017-12-20 13:08         ` Jeff King
2017-12-21 18:41           ` René Scharfe
2017-12-24 14:22             ` Jeff King
2017-12-25 17:36               ` René Scharfe
2017-12-25 17:41 ` [PATCH v2 0/9] revision: get rid of the flag leak_pending René Scharfe
2017-12-25 17:43   ` [PATCH v2 1/9] commit: avoid allocation in clear_commit_marks_many() René Scharfe
2018-01-10  7:54     ` Jeff King [this message]
2017-12-25 17:44   ` [PATCH v2 2/9] commit: use clear_commit_marks_many() in remove_redundant() René Scharfe
2017-12-25 17:44   ` [PATCH v2 3/9] ref-filter: use clear_commit_marks_many() in do_merge_filter() René Scharfe
2017-12-25 17:44   ` [PATCH v2 4/9] object: add clear_commit_marks_all() René Scharfe
2018-01-10  7:58     ` Jeff King
2018-01-11 18:57       ` René Scharfe
2018-01-12 15:20         ` Jeff King
2017-12-25 17:45   ` [PATCH v2 5/9] bisect: avoid using the rev_info flag leak_pending René Scharfe
2018-01-10  8:07     ` Jeff King
2018-01-11 18:57       ` René Scharfe
2018-01-12 15:23         ` Jeff King
2017-12-25 17:46   ` [PATCH v2 6/9] bundle: " René Scharfe
2017-12-28 21:13     ` Junio C Hamano
2018-01-10  8:18     ` Jeff King
2017-12-25 17:47   ` [PATCH v2 7/9] checkout: " René Scharfe
2017-12-28 21:24     ` Junio C Hamano
2017-12-25 17:47   ` [PATCH v2 8/9] revision: remove the unused " René Scharfe
2017-12-25 17:48   ` [PATCH v2 9/9] commit: remove unused function clear_commit_marks_for_object_array() René Scharfe
2017-12-28 20:32   ` [PATCH v2 0/9] revision: get rid of the flag leak_pending Junio C Hamano
2018-01-10  8:20   ` Jeff King

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