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authorJunio C Hamano <gitster@pobox.com>2012-02-12 22:43:03 -0800
committerJunio C Hamano <gitster@pobox.com>2012-02-12 22:43:03 -0800
commitdd5253b4bd440d2472ac01bd3821ac96c2d26ff0 (patch)
tree57a3dc5add0c541e2dddbb2cc1d17e6ab8fbc074 /sha1_file.c
parent6ff63d9f8723a8367a668f480496b115fa3ca4ca (diff)
parentc01f51cc750dbd76e50919bf4e3b94e1b47d2e23 (diff)
downloadgit-dd5253b4bd440d2472ac01bd3821ac96c2d26ff0.tar.gz
Merge branch 'nd/find-pack-entry-recent-cache-invalidation'
* nd/find-pack-entry-recent-cache-invalidation: find_pack_entry(): do not keep packed_git pointer locally sha1_file.c: move the core logic of find_pack_entry() into fill_pack_entry()
Diffstat (limited to 'sha1_file.c')
-rw-r--r--sha1_file.c84
1 files changed, 46 insertions, 38 deletions
diff --git a/sha1_file.c b/sha1_file.c
index d9aa0e0a2c..f9f8d5e91c 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -54,6 +54,8 @@ static struct cached_object empty_tree = {
0
};
+static struct packed_git *last_found_pack;
+
static struct cached_object *find_cached_object(const unsigned char *sha1)
{
int i;
@@ -720,6 +722,8 @@ void free_pack_by_name(const char *pack_name)
close_pack_index(p);
free(p->bad_object_sha1);
*pp = p->next;
+ if (last_found_pack == p)
+ last_found_pack = NULL;
free(p);
return;
}
@@ -2015,54 +2019,58 @@ int is_pack_valid(struct packed_git *p)
return !open_packed_git(p);
}
+static int fill_pack_entry(const unsigned char *sha1,
+ struct pack_entry *e,
+ struct packed_git *p)
+{
+ off_t offset;
+
+ if (p->num_bad_objects) {
+ unsigned i;
+ for (i = 0; i < p->num_bad_objects; i++)
+ if (!hashcmp(sha1, p->bad_object_sha1 + 20 * i))
+ return 0;
+ }
+
+ offset = find_pack_entry_one(sha1, p);
+ if (!offset)
+ return 0;
+
+ /*
+ * We are about to tell the caller where they can locate the
+ * requested object. We better make sure the packfile is
+ * still here and can be accessed before supplying that
+ * answer, as it may have been deleted since the index was
+ * loaded!
+ */
+ if (!is_pack_valid(p)) {
+ warning("packfile %s cannot be accessed", p->pack_name);
+ return 0;
+ }
+ e->offset = offset;
+ e->p = p;
+ hashcpy(e->sha1, sha1);
+ return 1;
+}
+
static int find_pack_entry(const unsigned char *sha1, struct pack_entry *e)
{
- static struct packed_git *last_found = (void *)1;
struct packed_git *p;
- off_t offset;
prepare_packed_git();
if (!packed_git)
return 0;
- p = (last_found == (void *)1) ? packed_git : last_found;
- do {
- if (p->num_bad_objects) {
- unsigned i;
- for (i = 0; i < p->num_bad_objects; i++)
- if (!hashcmp(sha1, p->bad_object_sha1 + 20 * i))
- goto next;
- }
+ if (last_found_pack && fill_pack_entry(sha1, e, last_found_pack))
+ return 1;
- offset = find_pack_entry_one(sha1, p);
- if (offset) {
- /*
- * We are about to tell the caller where they can
- * locate the requested object. We better make
- * sure the packfile is still here and can be
- * accessed before supplying that answer, as
- * it may have been deleted since the index
- * was loaded!
- */
- if (!is_pack_valid(p)) {
- warning("packfile %s cannot be accessed", p->pack_name);
- goto next;
- }
- e->offset = offset;
- e->p = p;
- hashcpy(e->sha1, sha1);
- last_found = p;
- return 1;
- }
+ for (p = packed_git; p; p = p->next) {
+ if (p == last_found_pack || !fill_pack_entry(sha1, e, p))
+ continue;
- next:
- if (p == last_found)
- p = packed_git;
- else
- p = p->next;
- if (p == last_found)
- p = p->next;
- } while (p);
+ last_found_pack = p;
+ return 1;
+ }
return 0;
}