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| author |  Brodie Rao <brodie@sf.io> | 2014-01-06 19:32:01 -0800 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2014-01-07 09:51:56 -0800 |
| commit | 832cf74c0792a58c9c28e32a8fe5dbb694f0cce6 (patch) | |
| tree | 3b6a5b33ce61f80d935028818c65f5a160ec8921 /t/t4013/diff.diff-tree_--root_-r_initial | |
| parent | Merge branch 'maint' of git://github.com/git-l10n/git-po into maint (diff) | |
| download | tgif-832cf74c0792a58c9c28e32a8fe5dbb694f0cce6.tar.xz | |
sha1_name: don't resolve refs when core.warnambiguousrefs is false
When seeing a full 40-hex object name, get_sha1_basic()
unconditionally checks if the string can also be interpreted as a
refname, but the result will not be used unless warn_ambiguous_refs
is in effect.
Omitting this unnecessary ref resolution provides a substantial
performance improvement, especially when passing many hashes to a
command (like "git rev-list --stdin") and core.warnambiguousrefs is
set to false. The check incurs 6 stat()s for every hash supplied,
which can be costly over NFS.
Signed-off-by: Brodie Rao <brodie@sf.io>
Acked-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t4013/diff.diff-tree_--root_-r_initial')
0 files changed, 0 insertions, 0 deletions