Function pseudo_merge_bitmap_for_commit

pack-bitmap.c:1470–1505

}

struct ewah_bitmap *pseudo_merge_bitmap_for_commit(struct bitmap_index *bitmap_git,
						   struct commit *commit)
{
	struct commit_list *p;
	struct bitmap *parents;
	struct pseudo_merge *match = NULL;

	if (!bitmap_git->pseudo_merges.nr)
		return NULL;

	parents = bitmap_new();

	for (p = commit->parents; p; p = p->next) {
		int pos = bitmap_position(bitmap_git, &p->item->object.oid);
		if (pos < 0 || pos >= bitmap_num_objects(bitmap_git))
			goto done;

		/*
		 * Use bitmap-relative positions instead of offsetting
		 * by bitmap_git->num_objects_in_base because we use
		 * this to find a match in pseudo_merge_for_parents(),
		 * and pseudo-merge groups cannot span multiple bitmap
		 * layers.
		 */
		bitmap_set(parents, pos);
	}

	match = pseudo_merge_for_parents(&bitmap_git->pseudo_merges, parents);

done:
	bitmap_free(parents);
	if (match)
		return pseudo_merge_bitmap(&bitmap_git->pseudo_merges, match);

	return NULL;
}

static void unsatisfy_all_pseudo_merges(struct bitmap_index *bitmap_git)
{