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[PATCH] sha1_name: avoid quadratic list insertion in handle_one_ref

From
René Scharfe <l.s.r@web.de>
Date
Aug 21, 2014, 18:30 UTC
Message-ID
<53F63AC5.80901@web.de>

Similar to 16445242 (fetch-pack: avoid quadratic list insertion in mark_complete), sort only after all refs are collected instead of while inserting. The result is the same, but it's more efficient that way. The difference will only be measurable in repositories with a large number of refs.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
---
 sha1_name.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sha1_name.c b/sha1_name.c
index 63ee66f..7098b10 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -839,7 +839,7 @@ static int handle_one_ref(const char *path,
 	}
 	if (object->type != OBJ_COMMIT)
 		return 0;
-	commit_list_insert_by_date((struct commit *)object, list);
+	commit_list_insert((struct commit *)object, list);
 	return 0;
 }
 
@@ -1366,6 +1366,7 @@ static int get_sha1_with_context_1(const char *name,
 		if (!only_to_die && namelen > 2 && name[1] == '/') {
 			struct commit_list *list = NULL;
 			for_each_ref(handle_one_ref, &list);
+			commit_list_sort_by_date(&list);
 			return get_sha1_oneline(name + 2, sha1, list);
 		}
 		if (namelen < 3 ||
-- 
2.1.0
Next: Jeff King
Message 1 of 2 in “sha1_name: avoid quadratic list insertion in handle_one_ref”
  1. sha1_name: avoid quadratic list insertion in handle_one_refRené Scharfe, Aug 21, 2014
  2. Jeff KingAug 22, 2014

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