From be7c6d467e8cc4104e1a15e8ff2d7b207624c685 Mon Sep 17 00:00:00 2001 From: Greg Price Date: Tue, 6 Jul 2010 19:29:19 -0400 Subject: [PATCH] pack-refs: remove newly empty directories In a large repository which uses directories to organize many refs, "git pack-refs --all --prune" does not improve performance so much as it should, unless we remove all the now-empty directories as well. Signed-off-by: Greg Price Signed-off-by: Junio C Hamano --- pack-refs.c | 32 ++++++++++++++++++++++++++++++++ t/t3210-pack-refs.sh | 6 ++++++ 2 files changed, 38 insertions(+) diff --git a/pack-refs.c b/pack-refs.c index 7f43f8ac3..129057026 100644 --- a/pack-refs.c +++ b/pack-refs.c @@ -60,6 +60,37 @@ static int handle_one_ref(const char *path, const unsigned char *sha1, return 0; } +/* + * Remove empty parents, but spare refs/ and immediate subdirs. + * Note: munges *name. + */ +static void try_remove_empty_parents(char *name) +{ + char *p, *q; + int i; + p = name; + for (i = 0; i < 2; i++) { /* refs/{heads,tags,...}/ */ + while (*p && *p != '/') + p++; + /* tolerate duplicate slashes; see check_ref_format() */ + while (*p == '/') + p++; + } + for (q = p; *q; q++) + ; + while (1) { + while (q > p && *q != '/') + q--; + while (q > p && *(q-1) == '/') + q--; + if (q == p) + break; + *q = '\0'; + if (rmdir(git_path("%s", name))) + break; + } +} + /* make sure nobody touched the ref, and unlink */ static void prune_ref(struct ref_to_prune *r) { @@ -68,6 +99,7 @@ static void prune_ref(struct ref_to_prune *r) if (lock) { unlink_or_warn(git_path("%s", r->name)); unlock_ref(lock); + try_remove_empty_parents(r->name); } } diff --git a/t/t3210-pack-refs.sh b/t/t3210-pack-refs.sh index 525174013..cd04361df 100755 --- a/t/t3210-pack-refs.sh +++ b/t/t3210-pack-refs.sh @@ -60,6 +60,12 @@ test_expect_success 'see if git pack-refs --prune remove ref files' ' ! test -f .git/refs/heads/f ' +test_expect_success 'see if git pack-refs --prune removes empty dirs' ' + git branch r/s/t && + git pack-refs --all --prune && + ! test -e .git/refs/heads/r +' + test_expect_success \ 'git branch g should work when git branch g/h has been deleted' \ 'git branch g/h && -- 2.30.2