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tree:<depth>: skip some trees even when collecting omits 

If a tree has already been recorded as omitted, we don't need to
traverse it again just to collect its omits. Stop traversing trees a
second time when collecting omits.

Signed-off-by: Matthew DeVore <matvore@google.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Matthew DeVore 2019-01-08 18:59:14 -08:00 committed by Junio C Hamano
parent c813a7c35f
commit 8272f26034
2 changed files with 22 additions and 7 deletions
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18
list-objects-filter.c
View File

@ -107,18 +107,19 @@ struct seen_map_entry {
size_t depth;
};
static void filter_trees_update_omits(
/* Returns 1 if the oid was in the omits set before it was invoked. */
static int filter_trees_update_omits(
struct object *obj,
struct filter_trees_depth_data *filter_data,
int include_it)
{
if (!filter_data->omits)
return;
return 0;
if (include_it)
oidset_remove(filter_data->omits, &obj->oid);
return oidset_remove(filter_data->omits, &obj->oid);
else
oidset_insert(filter_data->omits, &obj->oid);
return oidset_insert(filter_data->omits, &obj->oid);
}
static enum list_objects_filter_result filter_trees_depth(
@ -171,12 +172,17 @@ static enum list_objects_filter_result filter_trees_depth(
if (already_seen) {
filter_res = LOFR_SKIP_TREE;
} else {
int been_omitted = filter_trees_update_omits(
obj, filter_data, include_it);
seen_info->depth = filter_data->current_depth;
filter_trees_update_omits(obj, filter_data, include_it);
if (include_it)
filter_res = LOFR_DO_SHOW;
else if (filter_data->omits)
else if (filter_data->omits && !been_omitted)
/*
* Must update omit information of children
* recursively; they have not been omitted yet.
*/
filter_res = LOFR_ZERO;
else
filter_res = LOFR_SKIP_TREE;

11
t/t6112-rev-list-filters-objects.sh
View File

@ -283,7 +283,7 @@ test_expect_success 'verify tree:0 includes trees in "filtered" output' '
# Make sure tree:0 does not iterate through any trees.
test_expect_success 'filter a GIANT tree through tree:0' '
test_expect_success 'verify skipping tree iteration when not collecting omits' '
GIT_TRACE=1 git -C r3 rev-list \
--objects --filter=tree:0 HEAD 2>filter_trace &&
grep "Skipping contents of tree [.][.][.]" filter_trace >actual &&
@ -377,6 +377,15 @@ test_expect_success 'test tree:# filter provisional omit for blob and tree' '
expect_has_with_different_name r4 filt/subdir
'
test_expect_success 'verify skipping tree iteration when collecting omits' '
GIT_TRACE=1 git -C r4 rev-list --filter-print-omitted \
--objects --filter=tree:0 HEAD 2>filter_trace &&
grep "^Skipping contents of tree " filter_trace >actual &&
echo "Skipping contents of tree subdir/..." >expect &&
test_cmp expect actual
'
# Test tree:<depth> where a tree is iterated to twice - once where a subentry is
# too deep to be included, and again where the blob inside it is shallow enough
# to be included. This makes sure we don't use LOFR_MARK_SEEN incorrectly (we