diff options
author | Taylor Blau <me@ttaylorr.com> | 2020-05-05 02:12:35 +0300 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2020-05-05 07:57:58 +0300 |
commit | b0a8d4820baa9966511ea9bd8c8b09dab087475f (patch) | |
tree | 33983aff8435137b78930fccf5a546fd6a6da097 | |
parent | 856e12c18a4616bbfbdfd1777577c1182b148519 (diff) |
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>
-rw-r--r-- | pack-bitmap.c | 25 | ||||
-rwxr-xr-x | t/perf/p5310-pack-bitmaps.sh | 5 | ||||
-rwxr-xr-x | t/t6113-rev-list-bitmap-filters.sh | 21 |
3 files changed, 50 insertions, 1 deletions
diff --git a/pack-bitmap.c b/pack-bitmap.c index 3693c9e62f..195ee8cad0 100644 --- a/pack-bitmap.c +++ b/pack-bitmap.c @@ -749,7 +749,7 @@ static void filter_bitmap_exclude_type(struct bitmap_index *bitmap_git, eword_t mask; uint32_t i; - if (type != OBJ_BLOB) + if (type != OBJ_BLOB && type != OBJ_TREE) BUG("filter_bitmap_exclude_type: unsupported type '%d'", type); /* @@ -867,6 +867,20 @@ static void filter_bitmap_blob_limit(struct bitmap_index *bitmap_git, bitmap_free(tips); } +static void filter_bitmap_tree_depth(struct bitmap_index *bitmap_git, + struct object_list *tip_objects, + struct bitmap *to_filter, + unsigned long limit) +{ + if (limit) + BUG("filter_bitmap_tree_depth given non-zero limit"); + + filter_bitmap_exclude_type(bitmap_git, tip_objects, to_filter, + OBJ_TREE); + filter_bitmap_exclude_type(bitmap_git, tip_objects, to_filter, + OBJ_BLOB); +} + static int filter_bitmap(struct bitmap_index *bitmap_git, struct object_list *tip_objects, struct bitmap *to_filter, @@ -890,6 +904,15 @@ static int filter_bitmap(struct bitmap_index *bitmap_git, return 0; } + if (filter->choice == LOFC_TREE_DEPTH && + filter->tree_exclude_depth == 0) { + if (bitmap_git) + filter_bitmap_tree_depth(bitmap_git, tip_objects, + to_filter, + filter->tree_exclude_depth); + return 0; + } + /* filter choice not handled */ return -1; } diff --git a/t/perf/p5310-pack-bitmaps.sh b/t/perf/p5310-pack-bitmaps.sh index 80c53edca7..75ccf9f4e3 100755 --- a/t/perf/p5310-pack-bitmaps.sh +++ b/t/perf/p5310-pack-bitmaps.sh @@ -53,6 +53,11 @@ test_perf 'rev-list count with blob:limit=1k' ' --filter=blob:limit=1k >/dev/null ' +test_perf 'rev-list count with tree:0' ' + git rev-list --use-bitmap-index --count --objects --all \ + --filter=tree:0 >/dev/null +' + test_perf 'simulated partial clone' ' git pack-objects --stdout --all --filter=blob:none </dev/null >/dev/null ' diff --git a/t/t6113-rev-list-bitmap-filters.sh b/t/t6113-rev-list-bitmap-filters.sh index 145603f124..2b551e6fd0 100755 --- a/t/t6113-rev-list-bitmap-filters.sh +++ b/t/t6113-rev-list-bitmap-filters.sh @@ -53,4 +53,25 @@ test_expect_success 'blob:limit filter with specified blob' ' test_bitmap_traversal expect actual ' +test_expect_success 'tree:0 filter' ' + git rev-list --objects --filter=tree:0 HEAD >expect && + git rev-list --use-bitmap-index \ + --objects --filter=tree:0 HEAD >actual && + test_bitmap_traversal expect actual +' + +test_expect_success 'tree:0 filter with specified blob, tree' ' + git rev-list --objects --filter=tree:0 HEAD HEAD:two.t >expect && + git rev-list --use-bitmap-index \ + --objects --filter=tree:0 HEAD HEAD:two.t >actual && + test_bitmap_traversal expect actual +' + +test_expect_success 'tree:1 filter' ' + git rev-list --objects --filter=tree:1 HEAD >expect && + git rev-list --use-bitmap-index \ + --objects --filter=tree:1 HEAD >actual && + test_cmp expect actual +' + test_done |