@@ -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;
}
@@ -57,6 +57,11 @@ 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
'
@@ -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
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> --- pack-bitmap.c | 25 ++++++++++++++++++++++++- t/perf/p5310-pack-bitmaps.sh | 5 +++++ t/t6113-rev-list-bitmap-filters.sh | 21 +++++++++++++++++++++ 3 files changed, 50 insertions(+), 1 deletion(-)