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-rw-r--r--builtin/pack-objects.c96
1 files changed, 79 insertions, 17 deletions
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 1c3b842651..58a9b16126 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -269,6 +269,43 @@ struct configured_exclusion {
static struct oidmap configured_exclusions;
static struct oidset excluded_by_config;
+static int name_hash_version = -1;
+
+/**
+ * Check whether the name_hash_version chosen by user input is appropriate,
+ * and also validate whether it is compatible with other features.
+ */
+static void validate_name_hash_version(void)
+{
+ if (name_hash_version < 1 || name_hash_version > 2)
+ die(_("invalid --name-hash-version option: %d"), name_hash_version);
+ if (write_bitmap_index && name_hash_version != 1) {
+ warning(_("currently, --write-bitmap-index requires --name-hash-version=1"));
+ name_hash_version = 1;
+ }
+}
+
+static inline uint32_t pack_name_hash_fn(const char *name)
+{
+ static int seen_version = -1;
+
+ if (seen_version < 0)
+ seen_version = name_hash_version;
+ else if (seen_version != name_hash_version)
+ BUG("name hash version changed from %d to %d mid-process",
+ seen_version, name_hash_version);
+
+ switch (name_hash_version) {
+ case 1:
+ return pack_name_hash(name);
+
+ case 2:
+ return pack_name_hash_v2((const unsigned char *)name);
+
+ default:
+ BUG("invalid name-hash version: %d", name_hash_version);
+ }
+}
/*
* stats
@@ -1264,7 +1301,8 @@ static void write_pack_file(void)
struct object_entry **write_order;
if (progress > pack_to_stdout)
- progress_state = start_progress(_("Writing objects"), nr_result);
+ progress_state = start_progress(the_repository,
+ _("Writing objects"), nr_result);
ALLOC_ARRAY(written_list, to_pack.nr_objects);
write_order = compute_write_order();
@@ -1318,8 +1356,9 @@ static void write_pack_file(void)
*/
int fd = finalize_hashfile(f, hash, FSYNC_COMPONENT_PACK, 0);
- fixup_pack_header_footer(fd, hash, pack_tmp_name,
- nr_written, hash, offset);
+ fixup_pack_header_footer(the_hash_algo, fd, hash,
+ pack_tmp_name, nr_written,
+ hash, offset);
close(fd);
if (write_bitmap_index) {
if (write_bitmap_index != WRITE_BITMAP_QUIET)
@@ -1367,9 +1406,10 @@ static void write_pack_file(void)
if (cruft)
pack_idx_opts.flags |= WRITE_MTIMES;
- stage_tmp_packfiles(&tmpname, pack_tmp_name,
- written_list, nr_written,
- &to_pack, &pack_idx_opts, hash,
+ stage_tmp_packfiles(the_hash_algo, &tmpname,
+ pack_tmp_name, written_list,
+ nr_written, &to_pack,
+ &pack_idx_opts, hash,
&idx_tmp_name);
if (write_bitmap_index) {
@@ -1686,7 +1726,7 @@ static int add_object_entry(const struct object_id *oid, enum object_type type,
return 0;
}
- create_object_entry(oid, type, pack_name_hash(name),
+ create_object_entry(oid, type, pack_name_hash_fn(name),
exclude, name && no_try_delta(name),
found_pack, found_offset);
return 1;
@@ -1900,7 +1940,7 @@ static void add_preferred_base_object(const char *name)
{
struct pbase_tree *it;
size_t cmplen;
- unsigned hash = pack_name_hash(name);
+ unsigned hash = pack_name_hash_fn(name);
if (!num_preferred_base || check_pbase_path(hash))
return;
@@ -2400,7 +2440,8 @@ static void get_object_details(void)
struct object_entry **sorted_by_offset;
if (progress)
- progress_state = start_progress(_("Counting objects"),
+ progress_state = start_progress(the_repository,
+ _("Counting objects"),
to_pack.nr_objects);
CALLOC_ARRAY(sorted_by_offset, to_pack.nr_objects);
@@ -3220,7 +3261,8 @@ static void prepare_pack(int window, int depth)
unsigned nr_done = 0;
if (progress)
- progress_state = start_progress(_("Compressing objects"),
+ progress_state = start_progress(the_repository,
+ _("Compressing objects"),
nr_deltas);
QSORT(delta_list, n, type_size_sort);
ll_find_deltas(delta_list, n, window+1, depth, &nr_done);
@@ -3410,7 +3452,7 @@ static void show_object_pack_hint(struct object *object, const char *name,
* here using a now in order to perhaps improve the delta selection
* process.
*/
- oe->hash = pack_name_hash(name);
+ oe->hash = pack_name_hash_fn(name);
oe->no_try_delta = name && no_try_delta(name);
stdin_packs_hints_nr++;
@@ -3560,7 +3602,7 @@ static void add_cruft_object_entry(const struct object_id *oid, enum object_type
entry = packlist_find(&to_pack, oid);
if (entry) {
if (name) {
- entry->hash = pack_name_hash(name);
+ entry->hash = pack_name_hash_fn(name);
entry->no_try_delta = no_try_delta(name);
}
} else {
@@ -3583,7 +3625,7 @@ static void add_cruft_object_entry(const struct object_id *oid, enum object_type
return;
}
- entry = create_object_entry(oid, type, pack_name_hash(name),
+ entry = create_object_entry(oid, type, pack_name_hash_fn(name),
0, name && no_try_delta(name),
pack, offset);
}
@@ -3648,7 +3690,8 @@ static void add_objects_in_unpacked_packs(void);
static void enumerate_cruft_objects(void)
{
if (progress)
- progress_state = start_progress(_("Enumerating cruft objects"), 0);
+ progress_state = start_progress(the_repository,
+ _("Enumerating cruft objects"), 0);
add_objects_in_unpacked_packs();
add_unreachable_loose_objects();
@@ -3674,7 +3717,8 @@ static void enumerate_and_traverse_cruft_objects(struct string_list *fresh_packs
revs.ignore_missing_links = 1;
if (progress)
- progress_state = start_progress(_("Enumerating cruft objects"), 0);
+ progress_state = start_progress(the_repository,
+ _("Enumerating cruft objects"), 0);
ret = add_unseen_recent_objects_to_traversal(&revs, cruft_expiration,
set_cruft_mtime, 1);
stop_progress(&progress_state);
@@ -3693,7 +3737,8 @@ static void enumerate_and_traverse_cruft_objects(struct string_list *fresh_packs
if (prepare_revision_walk(&revs))
die(_("revision walk setup failed"));
if (progress)
- progress_state = start_progress(_("Traversing cruft objects"), 0);
+ progress_state = start_progress(the_repository,
+ _("Traversing cruft objects"), 0);
nr_seen = 0;
traverse_commit_list(&revs, show_cruft_commit, show_cruft_object, NULL);
@@ -4060,6 +4105,15 @@ static int get_object_list_from_bitmap(struct rev_info *revs)
if (!(bitmap_git = prepare_bitmap_walk(revs, 0)))
return -1;
+ /*
+ * For now, force the name-hash version to be 1 since that
+ * is the version implied by the bitmap format. Later, the
+ * format can include this version explicitly in its format,
+ * allowing readers to know the version that was used during
+ * the bitmap write.
+ */
+ name_hash_version = 1;
+
if (pack_options_allow_reuse())
reuse_partial_packfile_from_bitmap(bitmap_git,
&reuse_packfiles,
@@ -4435,6 +4489,8 @@ int cmd_pack_objects(int argc,
OPT_STRING_LIST(0, "uri-protocol", &uri_protocols,
N_("protocol"),
N_("exclude any configured uploadpack.blobpackfileuri with this protocol")),
+ OPT_INTEGER(0, "name-hash-version", &name_hash_version,
+ N_("use the specified name-hash function to group similar objects")),
OPT_END(),
};
@@ -4590,6 +4646,11 @@ int cmd_pack_objects(int argc,
if (pack_to_stdout || !rev_list_all)
write_bitmap_index = 0;
+ if (name_hash_version < 0)
+ name_hash_version = (int)git_env_ulong("GIT_TEST_NAME_HASH_VERSION", 1);
+
+ validate_name_hash_version();
+
if (use_delta_islands)
strvec_push(&rp, "--topo-order");
@@ -4625,7 +4686,8 @@ int cmd_pack_objects(int argc,
prepare_packing_data(the_repository, &to_pack);
if (progress && !cruft)
- progress_state = start_progress(_("Enumerating objects"), 0);
+ progress_state = start_progress(the_repository,
+ _("Enumerating objects"), 0);
if (stdin_packs) {
/* avoids adding objects in excluded packs */
ignore_packed_keep_in_core = 1;
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-14 03:12:08 +0000