[PATCH 4/6] Avoid accessing non-tag refs in git-describe unless --all is requested
From: Shawn O. Pearce <hidden>
Date: 2016-06-15 22:44:16
Subsystem:
the rest · Maintainer:
Linus Torvalds
If we aren't going to use a ref there is no reason for us to open its object from the object database. This avoids opening any of the head commits reachable from refs/heads/ unless they are also reachable through the commit we have been asked to describe and we need to walk through it to find a tag. Signed-off-by: Shawn O. Pearce <redacted> --- builtin-describe.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/builtin-describe.c b/builtin-describe.c
index bfd25e2..9c958bd 100644
--- a/builtin-describe.c
+++ b/builtin-describe.c@@ -46,11 +46,15 @@ static void add_to_known_names(const char *path, static int get_name(const char *path, const unsigned char *sha1, int flag, void *cb_data) { + int might_be_tag = !prefixcmp(path, "refs/tags/"); struct commit *commit; struct object *object; unsigned char peeled[20]; int is_tag, prio; + if (!all && !might_be_tag) + return 0; + if (!peel_ref(path, peeled) && !is_null_sha1(peeled)) { commit = lookup_commit_reference_gently(peeled, 1); if (!commit)
@@ -68,7 +72,7 @@ static int get_name(const char *path, const unsigned char *sha1, int flag, void * If --tags, then any tags are used. * Otherwise only annotated tags are used. */ - if (!prefixcmp(path, "refs/tags/")) { + if (might_be_tag) { if (is_tag) { prio = 2; if (pattern && fnmatch(pattern, path + 10, 0))
--
1.5.4.3.295.g6b554