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author | Taylor Blau <me@ttaylorr.com> | 2020-05-04 17:12:35 -0600 |
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committer | Junio C Hamano <gitster@pobox.com> | 2020-05-04 21:57:58 -0700 |
commit | b0a8d4820baa9966511ea9bd8c8b09dab087475f (patch) | |
tree | 33983aff8435137b78930fccf5a546fd6a6da097 /t/lib-bash.sh | |
parent | pack-bitmap.c: make object filtering functions generic (diff) | |
download | tgif-b0a8d4820baa9966511ea9bd8c8b09dab087475f.tar.xz |
pack-bitmap.c: support 'tree:0' filtering
In the previous patch, we made it easy to define other filters that
exclude all objects of a certain type. Use that in order to implement
bitmap-level filtering for the '--filter=tree:<n>' filter when 'n' is
equal to 0.
The general case is not helped by bitmaps, since for values of 'n > 0',
the object filtering machinery requires a full-blown tree traversal in
order to determine the depth of a given tree. Caching this is
non-obvious, too, since the same tree object can have a different depth
depending on the context (e.g., a tree was moved up in the directory
hierarchy between two commits).
But, the 'n = 0' case can be helped, and this patch does so. Running
p5310.11 in this tree and on master with the kernel, we can see that
this case is helped substantially:
Test master this tree
--------------------------------------------------------------------------------
5310.11: rev-list count with tree:0 10.68(10.39+0.27) 0.06(0.04+0.01) -99.4%
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/lib-bash.sh')
0 files changed, 0 insertions, 0 deletions