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-rw-r--r--sha1_file.c66
1 files changed, 18 insertions, 48 deletions
diff --git a/sha1_file.c b/sha1_file.c
index cb571ac..3066b5f 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -23,6 +23,7 @@
#include "bulk-checkin.h"
#include "streaming.h"
#include "dir.h"
+#include "mru.h"
#ifndef O_NOATIME
#if defined(__linux__) && (defined(__i386__) || defined(__PPC__))
@@ -59,14 +60,6 @@ static struct cached_object empty_tree = {
0
};
-/*
- * A pointer to the last packed_git in which an object was found.
- * When an object is sought, we look in this packfile first, because
- * objects that are looked up at similar times are often in the same
- * packfile as one another.
- */
-static struct packed_git *last_found_pack;
-
static struct cached_object *find_cached_object(const unsigned char *sha1)
{
int i;
@@ -522,6 +515,9 @@ static size_t peak_pack_mapped;
static size_t pack_mapped;
struct packed_git *packed_git;
+static struct mru packed_git_mru_storage;
+struct mru *packed_git_mru = &packed_git_mru_storage;
+
void pack_report(void)
{
fprintf(stderr,
@@ -891,36 +887,6 @@ void close_pack_index(struct packed_git *p)
}
}
-/*
- * This is used by git-repack in case a newly created pack happens to
- * contain the same set of objects as an existing one. In that case
- * the resulting file might be different even if its name would be the
- * same. It is best to close any reference to the old pack before it is
- * replaced on disk. Of course no index pointers or windows for given pack
- * must subsist at this point. If ever objects from this pack are requested
- * again, the new version of the pack will be reinitialized through
- * reprepare_packed_git().
- */
-void free_pack_by_name(const char *pack_name)
-{
- struct packed_git *p, **pp = &packed_git;
-
- while (*pp) {
- p = *pp;
- if (strcmp(pack_name, p->pack_name) == 0) {
- clear_delta_base_cache();
- close_pack(p);
- free(p->bad_object_sha1);
- *pp = p->next;
- if (last_found_pack == p)
- last_found_pack = NULL;
- free(p);
- return;
- }
- pp = &p->next;
- }
-}
-
static unsigned int get_max_fd_limit(void)
{
#ifdef RLIMIT_NOFILE
@@ -1385,6 +1351,15 @@ static void rearrange_packed_git(void)
free(ary);
}
+static void prepare_packed_git_mru(void)
+{
+ struct packed_git *p;
+
+ mru_clear(packed_git_mru);
+ for (p = packed_git; p; p = p->next)
+ mru_append(packed_git_mru, p);
+}
+
static int prepare_packed_git_run_once = 0;
void prepare_packed_git(void)
{
@@ -1400,6 +1375,7 @@ void prepare_packed_git(void)
alt->name[-1] = '/';
}
rearrange_packed_git();
+ prepare_packed_git_mru();
prepare_packed_git_run_once = 1;
}
@@ -2604,21 +2580,15 @@ static int fill_pack_entry(const unsigned char *sha1,
*/
static int find_pack_entry(const unsigned char *sha1, struct pack_entry *e)
{
- struct packed_git *p;
+ struct mru_entry *p;
prepare_packed_git();
if (!packed_git)
return 0;
- if (last_found_pack && fill_pack_entry(sha1, e, last_found_pack))
- return 1;
-
- for (p = packed_git; p; p = p->next) {
- if (p == last_found_pack)
- continue; /* we already checked this one */
-
- if (fill_pack_entry(sha1, e, p)) {
- last_found_pack = p;
+ for (p = packed_git_mru->head; p; p = p->next) {
+ if (fill_pack_entry(sha1, e, p->item)) {
+ mru_mark(packed_git_mru, p);
return 1;
}
}