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authorLibravatar Junio C Hamano <junkio@cox.net>2005-12-04 22:52:19 -0800
committerLibravatar Junio C Hamano <junkio@cox.net>2005-12-04 23:19:31 -0800
commit6f42f89c1f7030d1101f08bf56d06cc2b6828b83 (patch)
tree53bc06eaaeaa04c25e508279ffea77362985bffd
parentsha1_file.c: make sure packs in an alternate odb is named properly. (diff)
downloadtgif-6f42f89c1f7030d1101f08bf56d06cc2b6828b83.tar.xz
server-info.c: drop unused D lines.
We tried to compute pack interdependency information in $GIT_DIR/objects/info/packs, hoping that dumb transports would make use of it when choosing from multiple choice, but that has never materialized, so stop computing D lines for now. Signed-off-by: Junio C Hamano <junkio@cox.net>
-rw-r--r--server-info.c120
1 files changed, 10 insertions, 110 deletions
diff --git a/server-info.c b/server-info.c
index e4006f0b5b..2cd1432249 100644
--- a/server-info.c
+++ b/server-info.c
@@ -51,7 +51,6 @@ static struct pack_info {
int nr_alloc;
int nr_heads;
unsigned char (*head)[20];
- char dep[0]; /* more */
} **info;
static int num_pack;
static const char *objdir;
@@ -123,49 +122,12 @@ static int parse_pack_def(const char *line, int old_cnt)
return 0;
}
else {
- /* The file describes a pack that is no longer here;
- * dependencies between packs needs to be recalculated.
- */
+ /* The file describes a pack that is no longer here */
return 1;
}
}
-/* Returns non-zero when we detect that the info in the
- * old file is useless.
- */
-static int parse_depend_def(char *line)
-{
- unsigned long num;
- char *cp, *ep;
- struct pack_info *this, *that;
-
- cp = line + 2;
- num = strtoul(cp, &ep, 10);
- if (ep == cp)
- return error("invalid input %s", line);
- this = find_pack_by_old_num(num);
- if (!this)
- return 0;
- while (ep && *(cp = ep)) {
- num = strtoul(cp, &ep, 10);
- if (ep == cp)
- break;
- that = find_pack_by_old_num(num);
- if (!that)
- /* The pack this one depends on does not
- * exist; this should not happen because
- * we write out the list of packs first and
- * then dependency information, but it means
- * the file is useless anyway.
- */
- return 1;
- this->dep[that->new_num] = 1;
- }
- return 0;
-}
-
-/* Returns non-zero when we detect that the info in the
- * old file is useless.
+/* Returns non-zero when we detect that the info in the old file is useless.
*/
static int parse_head_def(char *line)
{
@@ -212,9 +174,8 @@ static int read_pack_info_file(const char *infofile)
if (parse_pack_def(line, old_cnt++))
goto out_stale;
break;
- case 'D': /* D ix dep-ix1 dep-ix2... */
- if (parse_depend_def(line))
- goto out_stale;
+ case 'D': /* we used to emit D but that was misguided. */
+ goto out_stale;
break;
case 'T': /* T ix sha1 type */
if (parse_head_def(line))
@@ -286,7 +247,6 @@ static void init_pack_info(const char *infofile, int force)
struct packed_git *p;
int stale;
int i = 0;
- char *dep_temp;
objdir = get_object_directory();
objdirlen = strlen(objdir);
@@ -307,7 +267,7 @@ static void init_pack_info(const char *infofile, int force)
if (strncmp(p->pack_name, objdir, objdirlen) ||
p->pack_name[objdirlen] != '/')
continue;
- info[i] = xcalloc(1, sizeof(struct pack_info) + num_pack);
+ info[i] = xcalloc(1, sizeof(struct pack_info));
info[i]->p = p;
info[i]->old_num = -1;
i++;
@@ -321,41 +281,16 @@ static void init_pack_info(const char *infofile, int force)
for (i = 0; i < num_pack; i++) {
if (stale) {
info[i]->old_num = -1;
- memset(info[i]->dep, 0, num_pack);
info[i]->nr_heads = 0;
}
if (info[i]->old_num < 0)
info[i]->latest = get_latest_commit_date(info[i]->p);
}
+ /* renumber them */
qsort(info, num_pack, sizeof(info[0]), compare_info);
for (i = 0; i < num_pack; i++)
info[i]->new_num = i;
-
- /* we need to fix up the dependency information
- * for the old ones.
- */
- dep_temp = NULL;
- for (i = 0; i < num_pack; i++) {
- int old;
-
- if (info[i]->old_num < 0)
- continue;
- if (! dep_temp)
- dep_temp = xmalloc(num_pack);
- memset(dep_temp, 0, num_pack);
- for (old = 0; old < num_pack; old++) {
- struct pack_info *base;
- if (!info[i]->dep[old])
- continue;
- base = find_pack_by_old_num(old);
- if (!base)
- die("internal error renumbering");
- dep_temp[base->new_num] = 1;
- }
- memcpy(info[i]->dep, dep_temp, num_pack);
- }
- free(dep_temp);
}
static void write_pack_info_file(FILE *fp)
@@ -363,17 +298,6 @@ static void write_pack_info_file(FILE *fp)
int i, j;
for (i = 0; i < num_pack; i++)
fprintf(fp, "P %s\n", info[i]->p->pack_name + objdirlen + 6);
-
- for (i = 0; i < num_pack; i++) {
- fprintf(fp, "D %1d", i);
- for (j = 0; j < num_pack; j++) {
- if ((i == j) || !(info[i]->dep[j]))
- continue;
- fprintf(fp, " %1d", j);
- }
- fputc('\n', fp);
- }
-
for (i = 0; i < num_pack; i++) {
struct pack_info *this = info[i];
for (j = 0; j < this->nr_heads; j++) {
@@ -386,37 +310,18 @@ static void write_pack_info_file(FILE *fp)
}
#define REFERENCED 01
-#define INTERNAL 02
#define EMITTED 04
static void show(struct object *o, int pack_ix)
{
/*
* We are interested in objects that are not referenced,
- * and objects that are referenced but not internal.
*/
if (o->flags & EMITTED)
return;
if (!(o->flags & REFERENCED))
add_head_def(info[pack_ix], o->sha1);
- else if ((o->flags & REFERENCED) && !(o->flags & INTERNAL)) {
- int i;
-
- /* Which pack contains this object? That is what
- * pack_ix can depend on. We earlier sorted info
- * array from youngest to oldest, so try newer packs
- * first to favor them here.
- */
- for (i = num_pack - 1; 0 <= i; i--) {
- struct packed_git *p = info[i]->p;
- struct pack_entry ent;
- if (find_pack_entry_one(o->sha1, &ent, p)) {
- info[pack_ix]->dep[i] = 1;
- break;
- }
- }
- }
o->flags |= EMITTED;
}
@@ -445,7 +350,7 @@ static void find_pack_info_one(int pack_ix)
o->flags = 0;
}
- /* Mark all the internal ones */
+ /* Mark all the referenced ones */
for (i = 0; i < num; i++) {
if (nth_packed_object_sha1(p, i, sha1))
die("corrupt pack file %s?", p->pack_name);
@@ -457,7 +362,6 @@ static void find_pack_info_one(int pack_ix)
for (j = 0; j < refs->count; j++)
refs->ref[j]->flags |= REFERENCED;
}
- o->flags |= INTERNAL;
}
for (i = 0; i < num; i++) {
@@ -465,14 +369,7 @@ static void find_pack_info_one(int pack_ix)
die("corrupt pack file %s?", p->pack_name);
if ((o = lookup_object(sha1)) == NULL)
die("cannot find %s", sha1_to_hex(sha1));
-
show(o, pack_ix);
- if (o->refs) {
- struct object_refs *refs = o->refs;
- int j;
- for (j = 0; j < refs->count; j++)
- show(refs->ref[j], pack_ix);
- }
}
}
@@ -530,5 +427,8 @@ int update_server_info(int force)
errs = errs | update_info_refs(force);
errs = errs | update_info_packs(force);
+ /* remove leftover rev-cache file if there is any */
+ unlink(git_path("info/rev-cache"));
+
return errs;
}