From: Junio C Hamano Date: Mon, 11 Jul 2005 07:00:55 +0000 (-0700) Subject: [PATCH] Check packs and then files. X-Git-Tag: v0.99.1~62 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=ab90ea5d6e6ef358c8ee5869307c33a939be0e66;hp=013aab8265a806c8d3c9b040485839091bca30f4;p=git.git [PATCH] Check packs and then files. This reverses the order of object lookup, to check pack index first and then go to the filesystem to find .git/objects/??/ hierarchy. When most of the objects are packed, this saves quite many stat() calls and negative dcache entries; while the price this approach has to pay is negligible, even when most of the objects are outside pack, because checking pack index file is quite cheap. Signed-off-by: Junio C Hamano Signed-off-by: Linus Torvalds --- diff --git a/sha1_file.c b/sha1_file.c index 6b9462cfb..5ec5598d7 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -1035,14 +1035,17 @@ void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size { unsigned long mapsize; void *map, *buf; + struct pack_entry e; + if (find_pack_entry(sha1, &e)) + return read_packed_sha1(sha1, type, size); map = map_sha1_file_internal(sha1, &mapsize); if (map) { buf = unpack_sha1_file(map, mapsize, type, size); munmap(map, mapsize); return buf; } - return read_packed_sha1(sha1, type, size); + return NULL; } void *read_object_with_reference(const unsigned char *sha1, @@ -1343,9 +1346,9 @@ int has_sha1_file(const unsigned char *sha1) struct stat st; struct pack_entry e; - if (find_sha1_file(sha1, &st)) + if (find_pack_entry(sha1, &e)) return 1; - return find_pack_entry(sha1, &e); + return find_sha1_file(sha1, &st) ? 1 : 0; } int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, const char *type)