From: Linus Torvalds Date: Thu, 23 Jul 2009 19:05:34 +0000 (-0700) Subject: git branch: avoid unnecessary object lookups X-Git-Tag: v1.6.4-rc3~5^2~4 X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=191d1ac435c01e2a7acfb93fb9da8378da90214c;p=git.git git branch: avoid unnecessary object lookups They can be expensive in the cold-cache case, so don't bother looking up the commits for all branches unless we really need them for some reason. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano --- diff --git a/builtin-branch.c b/builtin-branch.c index 3784dda09..0e30756b1 100644 --- a/builtin-branch.c +++ b/builtin-branch.c @@ -191,7 +191,7 @@ struct ref_item { struct ref_list { struct rev_info revs; - int index, alloc, maxwidth; + int index, alloc, maxwidth, verbose; struct ref_item *list; struct commit_list *with_commit; int kinds; @@ -244,17 +244,20 @@ static int append_ref(const char *refname, const unsigned char *sha1, int flags, if ((kind & ref_list->kinds) == 0) return 0; - commit = lookup_commit_reference_gently(sha1, 1); - if (!commit) - return error("branch '%s' does not point at a commit", refname); + commit = NULL; + if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) { + commit = lookup_commit_reference_gently(sha1, 1); + if (!commit) + return error("branch '%s' does not point at a commit", refname); - /* Filter with with_commit if specified */ - if (!is_descendant_of(commit, ref_list->with_commit)) - return 0; + /* Filter with with_commit if specified */ + if (!is_descendant_of(commit, ref_list->with_commit)) + return 0; - if (merge_filter != NO_FILTER) - add_pending_object(&ref_list->revs, - (struct object *)commit, refname); + if (merge_filter != NO_FILTER) + add_pending_object(&ref_list->revs, + (struct object *)commit, refname); + } /* Resize buffer */ if (ref_list->index >= ref_list->alloc) { @@ -423,6 +426,7 @@ static void print_ref_list(int kinds, int detached, int verbose, int abbrev, str memset(&ref_list, 0, sizeof(ref_list)); ref_list.kinds = kinds; + ref_list.verbose = verbose; ref_list.with_commit = with_commit; if (merge_filter != NO_FILTER) init_revisions(&ref_list.revs, NULL);