Merge branch 'ds/merge-base-is-ancestor-optim'
"git merge-base --is-ancestor" is taught to take advantage of the
commit graph.
* ds/merge-base-is-ancestor-optim:
commit-reach: use fast logic in repo_in_merge_base
commit-reach: create repo_is_descendant_of()
diff --git a/commit-reach.c b/commit-reach.c
index 4ca7e70..43e303d 100644
--- a/commit-reach.c
+++ b/commit-reach.c
@@ -283,7 +283,9 @@
/*
* Is "commit" a descendant of one of the elements on the "with_commit" list?
*/
-int is_descendant_of(struct commit *commit, struct commit_list *with_commit)
+static int repo_is_descendant_of(struct repository *r,
+ struct commit *commit,
+ struct commit_list *with_commit)
{
if (!with_commit)
return 1;
@@ -301,13 +303,18 @@
other = with_commit->item;
with_commit = with_commit->next;
- if (in_merge_bases(other, commit))
+ if (repo_in_merge_bases_many(r, other, 1, &commit))
return 1;
}
return 0;
}
}
+int is_descendant_of(struct commit *commit, struct commit_list *with_commit)
+{
+ return repo_is_descendant_of(the_repository, commit, with_commit);
+}
+
/*
* Is "commit" an ancestor of one of the "references"?
*/
@@ -348,7 +355,15 @@
struct commit *commit,
struct commit *reference)
{
- return repo_in_merge_bases_many(r, commit, 1, &reference);
+ int res;
+ struct commit_list *list = NULL;
+ struct commit_list **next = &list;
+
+ next = commit_list_append(commit, next);
+ res = repo_is_descendant_of(r, reference, list);
+ free_commit_list(list);
+
+ return res;
}
struct commit_list *reduce_heads(struct commit_list *heads)
