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-rw-r--r--packfile.c135
1 files changed, 93 insertions, 42 deletions
diff --git a/packfile.c b/packfile.c
index 4a5fe7ab18..7c1a2519fc 100644
--- a/packfile.c
+++ b/packfile.c
@@ -1,5 +1,5 @@
#include "cache.h"
-#include "mru.h"
+#include "list.h"
#include "pack.h"
#include "dir.h"
#include "mergesort.h"
@@ -8,6 +8,11 @@
#include "list.h"
#include "streaming.h"
#include "sha1-lookup.h"
+#include "commit.h"
+#include "object.h"
+#include "tag.h"
+#include "tree-walk.h"
+#include "tree.h"
char *odb_pack_name(struct strbuf *buf,
const unsigned char *sha1,
@@ -40,7 +45,7 @@ static unsigned int pack_max_fds;
static size_t peak_pack_mapped;
static size_t pack_mapped;
struct packed_git *packed_git;
-struct mru packed_git_mru;
+LIST_HEAD(packed_git_mru);
#define SZ_FMT PRIuMAX
static inline uintmax_t sz_fmt(size_t s) { return s; }
@@ -643,10 +648,10 @@ struct packed_git *add_packed_git(const char *path, size_t path_len, int local)
return NULL;
/*
- * ".pack" is long enough to hold any suffix we're adding (and
+ * ".promisor" is long enough to hold any suffix we're adding (and
* the use xsnprintf double-checks that)
*/
- alloc = st_add3(path_len, strlen(".pack"), 1);
+ alloc = st_add3(path_len, strlen(".promisor"), 1);
p = alloc_packed_git(alloc);
memcpy(p->pack_name, path, path_len);
@@ -654,6 +659,10 @@ struct packed_git *add_packed_git(const char *path, size_t path_len, int local)
if (!access(p->pack_name, F_OK))
p->pack_keep = 1;
+ xsnprintf(p->pack_name + path_len, alloc - path_len, ".promisor");
+ if (!access(p->pack_name, F_OK))
+ p->pack_promisor = 1;
+
xsnprintf(p->pack_name + path_len, alloc - path_len, ".pack");
if (stat(p->pack_name, &st) || !S_ISREG(st.st_mode)) {
free(p);
@@ -781,7 +790,8 @@ static void prepare_packed_git_one(char *objdir, int local)
if (ends_with(de->d_name, ".idx") ||
ends_with(de->d_name, ".pack") ||
ends_with(de->d_name, ".bitmap") ||
- ends_with(de->d_name, ".keep"))
+ ends_with(de->d_name, ".keep") ||
+ ends_with(de->d_name, ".promisor"))
string_list_append(&garbage, path.buf);
else
report_garbage(PACKDIR_FILE_GARBAGE, path.buf);
@@ -866,9 +876,10 @@ static void prepare_packed_git_mru(void)
{
struct packed_git *p;
- mru_clear(&packed_git_mru);
+ INIT_LIST_HEAD(&packed_git_mru);
+
for (p = packed_git; p; p = p->next)
- mru_append(&packed_git_mru, p);
+ list_add_tail(&p->mru, &packed_git_mru);
}
static int prepare_packed_git_run_once = 0;
@@ -1350,16 +1361,16 @@ int packed_object_info(struct packed_git *p, off_t obj_offset,
*oi->disk_sizep = revidx[1].offset - obj_offset;
}
- if (oi->typep || oi->typename) {
+ if (oi->typep || oi->type_name) {
enum object_type ptot;
ptot = packed_to_object_type(p, obj_offset, type, &w_curs,
curpos);
if (oi->typep)
*oi->typep = ptot;
- if (oi->typename) {
- const char *tn = typename(ptot);
+ if (oi->type_name) {
+ const char *tn = type_name(ptot);
if (tn)
- strbuf_addstr(oi->typename, tn);
+ strbuf_addstr(oi->type_name, tn);
}
if (ptot < 0) {
type = OBJ_BAD;
@@ -1702,8 +1713,7 @@ off_t nth_packed_object_offset(const struct packed_git *p, uint32_t n)
return off;
index += p->num_objects * 4 + (off & 0x7fffffff) * 8;
check_pack_index_ptr(p, index);
- return (((uint64_t)ntohl(*((uint32_t *)(index + 0)))) << 32) |
- ntohl(*((uint32_t *)(index + 4)));
+ return get_be64(index);
}
}
@@ -1712,11 +1722,8 @@ off_t find_pack_entry_one(const unsigned char *sha1,
{
const uint32_t *level1_ofs = p->index_data;
const unsigned char *index = p->index_data;
- unsigned hi, lo, stride;
- static int debug_lookup = -1;
-
- if (debug_lookup < 0)
- debug_lookup = !!getenv("GIT_DEBUG_LOOKUP");
+ unsigned stride;
+ uint32_t result;
if (!index) {
if (open_pack_index(p))
@@ -1729,8 +1736,6 @@ off_t find_pack_entry_one(const unsigned char *sha1,
index += 8;
}
index += 4 * 256;
- hi = ntohl(level1_ofs[*sha1]);
- lo = ((*sha1 == 0x0) ? 0 : ntohl(level1_ofs[*sha1 - 1]));
if (p->index_version > 1) {
stride = 20;
} else {
@@ -1738,24 +1743,8 @@ off_t find_pack_entry_one(const unsigned char *sha1,
index += 4;
}
- if (debug_lookup)
- printf("%02x%02x%02x... lo %u hi %u nr %"PRIu32"\n",
- sha1[0], sha1[1], sha1[2], lo, hi, p->num_objects);
-
- while (lo < hi) {
- unsigned mi = lo + (hi - lo) / 2;
- int cmp = hashcmp(index + mi * stride, sha1);
-
- if (debug_lookup)
- printf("lo %u hi %u rg %u mi %u\n",
- lo, hi, hi - lo, mi);
- if (!cmp)
- return nth_packed_object_offset(p, mi);
- if (cmp > 0)
- hi = mi;
- else
- lo = mi+1;
- }
+ if (bsearch_hash(sha1, level1_ofs, index, stride, &result))
+ return nth_packed_object_offset(p, result);
return 0;
}
@@ -1831,15 +1820,16 @@ static int fill_pack_entry(const unsigned char *sha1,
*/
int find_pack_entry(const unsigned char *sha1, struct pack_entry *e)
{
- struct mru_entry *p;
+ struct list_head *pos;
prepare_packed_git();
if (!packed_git)
return 0;
- for (p = packed_git_mru.head; p; p = p->next) {
- if (fill_pack_entry(sha1, e, p->item)) {
- mru_mark(&packed_git_mru, p);
+ list_for_each(pos, &packed_git_mru) {
+ struct packed_git *p = list_entry(pos, struct packed_git, mru);
+ if (fill_pack_entry(sha1, e, p)) {
+ list_move(&p->mru, &packed_git_mru);
return 1;
}
}
@@ -1889,6 +1879,9 @@ int for_each_packed_object(each_packed_object_fn cb, void *data, unsigned flags)
for (p = packed_git; p; p = p->next) {
if ((flags & FOR_EACH_OBJECT_LOCAL_ONLY) && !p->pack_local)
continue;
+ if ((flags & FOR_EACH_OBJECT_PROMISOR_ONLY) &&
+ !p->pack_promisor)
+ continue;
if (open_pack_index(p)) {
pack_errors = 1;
continue;
@@ -1899,3 +1892,61 @@ int for_each_packed_object(each_packed_object_fn cb, void *data, unsigned flags)
}
return r ? r : pack_errors;
}
+
+static int add_promisor_object(const struct object_id *oid,
+ struct packed_git *pack,
+ uint32_t pos,
+ void *set_)
+{
+ struct oidset *set = set_;
+ struct object *obj = parse_object(oid);
+ if (!obj)
+ return 1;
+
+ oidset_insert(set, oid);
+
+ /*
+ * If this is a tree, commit, or tag, the objects it refers
+ * to are also promisor objects. (Blobs refer to no objects.)
+ */
+ if (obj->type == OBJ_TREE) {
+ struct tree *tree = (struct tree *)obj;
+ struct tree_desc desc;
+ struct name_entry entry;
+ if (init_tree_desc_gently(&desc, tree->buffer, tree->size))
+ /*
+ * Error messages are given when packs are
+ * verified, so do not print any here.
+ */
+ return 0;
+ while (tree_entry_gently(&desc, &entry))
+ oidset_insert(set, entry.oid);
+ } else if (obj->type == OBJ_COMMIT) {
+ struct commit *commit = (struct commit *) obj;
+ struct commit_list *parents = commit->parents;
+
+ oidset_insert(set, &commit->tree->object.oid);
+ for (; parents; parents = parents->next)
+ oidset_insert(set, &parents->item->object.oid);
+ } else if (obj->type == OBJ_TAG) {
+ struct tag *tag = (struct tag *) obj;
+ oidset_insert(set, &tag->tagged->oid);
+ }
+ return 0;
+}
+
+int is_promisor_object(const struct object_id *oid)
+{
+ static struct oidset promisor_objects;
+ static int promisor_objects_prepared;
+
+ if (!promisor_objects_prepared) {
+ if (repository_format_partial_clone) {
+ for_each_packed_object(add_promisor_object,
+ &promisor_objects,
+ FOR_EACH_OBJECT_PROMISOR_ONLY);
+ }
+ promisor_objects_prepared = 1;
+ }
+ return oidset_contains(&promisor_objects, oid);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 21:53:01 +0000