| #include "cache.h" |
| #include "refs.h" |
| #include "tag.h" |
| #include "commit.h" |
| #include "blob.h" |
| #include "diff.h" |
| #include "revision.h" |
| #include "reachable.h" |
| #include "cache-tree.h" |
| #include "progress.h" |
| #include "list-objects.h" |
| |
| struct connectivity_progress { |
| struct progress *progress; |
| unsigned long count; |
| }; |
| |
| static void update_progress(struct connectivity_progress *cp) |
| { |
| cp->count++; |
| if ((cp->count & 1023) == 0) |
| display_progress(cp->progress, cp->count); |
| } |
| |
| static int add_one_ref(const char *path, const struct object_id *oid, |
| int flag, void *cb_data) |
| { |
| struct rev_info *revs = (struct rev_info *)cb_data; |
| struct object *object; |
| |
| if ((flag & REF_ISSYMREF) && (flag & REF_ISBROKEN)) { |
| warning("symbolic ref is dangling: %s", path); |
| return 0; |
| } |
| |
| object = parse_object_or_die(oid->hash, path); |
| add_pending_object(revs, object, ""); |
| |
| return 0; |
| } |
| |
| /* |
| * The traversal will have already marked us as SEEN, so we |
| * only need to handle any progress reporting here. |
| */ |
| static void mark_object(struct object *obj, const char *name, void *data) |
| { |
| update_progress(data); |
| } |
| |
| static void mark_commit(struct commit *c, void *data) |
| { |
| mark_object(&c->object, NULL, data); |
| } |
| |
| struct recent_data { |
| struct rev_info *revs; |
| unsigned long timestamp; |
| }; |
| |
| static void add_recent_object(const unsigned char *sha1, |
| unsigned long mtime, |
| struct recent_data *data) |
| { |
| struct object *obj; |
| enum object_type type; |
| |
| if (mtime <= data->timestamp) |
| return; |
| |
| /* |
| * We do not want to call parse_object here, because |
| * inflating blobs and trees could be very expensive. |
| * However, we do need to know the correct type for |
| * later processing, and the revision machinery expects |
| * commits and tags to have been parsed. |
| */ |
| type = sha1_object_info(sha1, NULL); |
| if (type < 0) |
| die("unable to get object info for %s", sha1_to_hex(sha1)); |
| |
| switch (type) { |
| case OBJ_TAG: |
| case OBJ_COMMIT: |
| obj = parse_object_or_die(sha1, NULL); |
| break; |
| case OBJ_TREE: |
| obj = (struct object *)lookup_tree(sha1); |
| break; |
| case OBJ_BLOB: |
| obj = (struct object *)lookup_blob(sha1); |
| break; |
| default: |
| die("unknown object type for %s: %s", |
| sha1_to_hex(sha1), typename(type)); |
| } |
| |
| if (!obj) |
| die("unable to lookup %s", sha1_to_hex(sha1)); |
| |
| add_pending_object(data->revs, obj, ""); |
| } |
| |
| static int add_recent_loose(const unsigned char *sha1, |
| const char *path, void *data) |
| { |
| struct stat st; |
| struct object *obj = lookup_object(sha1); |
| |
| if (obj && obj->flags & SEEN) |
| return 0; |
| |
| if (stat(path, &st) < 0) { |
| /* |
| * It's OK if an object went away during our iteration; this |
| * could be due to a simultaneous repack. But anything else |
| * we should abort, since we might then fail to mark objects |
| * which should not be pruned. |
| */ |
| if (errno == ENOENT) |
| return 0; |
| return error_errno("unable to stat %s", sha1_to_hex(sha1)); |
| } |
| |
| add_recent_object(sha1, st.st_mtime, data); |
| return 0; |
| } |
| |
| static int add_recent_packed(const unsigned char *sha1, |
| struct packed_git *p, uint32_t pos, |
| void *data) |
| { |
| struct object *obj = lookup_object(sha1); |
| |
| if (obj && obj->flags & SEEN) |
| return 0; |
| add_recent_object(sha1, p->mtime, data); |
| return 0; |
| } |
| |
| int add_unseen_recent_objects_to_traversal(struct rev_info *revs, |
| unsigned long timestamp) |
| { |
| struct recent_data data; |
| int r; |
| |
| data.revs = revs; |
| data.timestamp = timestamp; |
| |
| r = for_each_loose_object(add_recent_loose, &data, |
| FOR_EACH_OBJECT_LOCAL_ONLY); |
| if (r) |
| return r; |
| return for_each_packed_object(add_recent_packed, &data, |
| FOR_EACH_OBJECT_LOCAL_ONLY); |
| } |
| |
| void mark_reachable_objects(struct rev_info *revs, int mark_reflog, |
| unsigned long mark_recent, |
| struct progress *progress) |
| { |
| struct connectivity_progress cp; |
| |
| /* |
| * Set up revision parsing, and mark us as being interested |
| * in all object types, not just commits. |
| */ |
| revs->tag_objects = 1; |
| revs->blob_objects = 1; |
| revs->tree_objects = 1; |
| |
| /* Add all refs from the index file */ |
| add_index_objects_to_pending(revs, 0); |
| |
| /* Add all external refs */ |
| for_each_ref(add_one_ref, revs); |
| |
| /* detached HEAD is not included in the list above */ |
| head_ref(add_one_ref, revs); |
| |
| /* Add all reflog info */ |
| if (mark_reflog) |
| add_reflogs_to_pending(revs, 0); |
| |
| cp.progress = progress; |
| cp.count = 0; |
| |
| /* |
| * Set up the revision walk - this will move all commits |
| * from the pending list to the commit walking list. |
| */ |
| if (prepare_revision_walk(revs)) |
| die("revision walk setup failed"); |
| traverse_commit_list(revs, mark_commit, mark_object, &cp); |
| |
| if (mark_recent) { |
| revs->ignore_missing_links = 1; |
| if (add_unseen_recent_objects_to_traversal(revs, mark_recent)) |
| die("unable to mark recent objects"); |
| if (prepare_revision_walk(revs)) |
| die("revision walk setup failed"); |
| traverse_commit_list(revs, mark_commit, mark_object, &cp); |
| } |
| |
| display_progress(cp.progress, cp.count); |
| } |