9 #include "cache-tree.h"
11 #include "list-objects.h"
13 struct connectivity_progress {
14 struct progress *progress;
18 static void update_progress(struct connectivity_progress *cp)
21 if ((cp->count & 1023) == 0)
22 display_progress(cp->progress, cp->count);
25 static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
27 struct object *object = parse_object_or_die(sha1, path);
28 struct rev_info *revs = (struct rev_info *)cb_data;
30 add_pending_object(revs, object, "");
36 * The traversal will have already marked us as SEEN, so we
37 * only need to handle any progress reporting here.
39 static void mark_object(struct object *obj, const struct name_path *path,
40 const char *name, void *data)
42 update_progress(data);
45 static void mark_commit(struct commit *c, void *data)
47 mark_object(&c->object, NULL, NULL, data);
51 struct rev_info *revs;
52 unsigned long timestamp;
55 static void add_recent_object(const unsigned char *sha1,
57 struct recent_data *data)
60 enum object_type type;
62 if (mtime <= data->timestamp)
66 * We do not want to call parse_object here, because
67 * inflating blobs and trees could be very expensive.
68 * However, we do need to know the correct type for
69 * later processing, and the revision machinery expects
70 * commits and tags to have been parsed.
72 type = sha1_object_info(sha1, NULL);
74 die("unable to get object info for %s", sha1_to_hex(sha1));
79 obj = parse_object_or_die(sha1, NULL);
82 obj = (struct object *)lookup_tree(sha1);
85 obj = (struct object *)lookup_blob(sha1);
88 die("unknown object type for %s: %s",
89 sha1_to_hex(sha1), typename(type));
93 die("unable to lookup %s", sha1_to_hex(sha1));
95 add_pending_object(data->revs, obj, "");
98 static int add_recent_loose(const unsigned char *sha1,
99 const char *path, void *data)
102 struct object *obj = lookup_object(sha1);
104 if (obj && obj->flags & SEEN)
107 if (stat(path, &st) < 0) {
109 * It's OK if an object went away during our iteration; this
110 * could be due to a simultaneous repack. But anything else
111 * we should abort, since we might then fail to mark objects
112 * which should not be pruned.
116 return error("unable to stat %s: %s",
117 sha1_to_hex(sha1), strerror(errno));
120 add_recent_object(sha1, st.st_mtime, data);
124 static int add_recent_packed(const unsigned char *sha1,
125 struct packed_git *p, uint32_t pos,
128 struct object *obj = lookup_object(sha1);
130 if (obj && obj->flags & SEEN)
132 add_recent_object(sha1, p->mtime, data);
136 int add_unseen_recent_objects_to_traversal(struct rev_info *revs,
137 unsigned long timestamp)
139 struct recent_data data;
143 data.timestamp = timestamp;
145 r = for_each_loose_object(add_recent_loose, &data,
146 FOR_EACH_OBJECT_LOCAL_ONLY);
149 return for_each_packed_object(add_recent_packed, &data,
150 FOR_EACH_OBJECT_LOCAL_ONLY);
153 void mark_reachable_objects(struct rev_info *revs, int mark_reflog,
154 unsigned long mark_recent,
155 struct progress *progress)
157 struct connectivity_progress cp;
158 struct each_ref_fn_sha1_adapter wrapped_add_one_ref =
162 * Set up revision parsing, and mark us as being interested
163 * in all object types, not just commits.
165 revs->tag_objects = 1;
166 revs->blob_objects = 1;
167 revs->tree_objects = 1;
169 /* Add all refs from the index file */
170 add_index_objects_to_pending(revs, 0);
172 /* Add all external refs */
173 for_each_ref(each_ref_fn_adapter, &wrapped_add_one_ref);
175 /* detached HEAD is not included in the list above */
176 head_ref(each_ref_fn_adapter, &wrapped_add_one_ref);
178 /* Add all reflog info */
180 add_reflogs_to_pending(revs, 0);
182 cp.progress = progress;
186 * Set up the revision walk - this will move all commits
187 * from the pending list to the commit walking list.
189 if (prepare_revision_walk(revs))
190 die("revision walk setup failed");
191 traverse_commit_list(revs, mark_commit, mark_object, &cp);
194 revs->ignore_missing_links = 1;
195 if (add_unseen_recent_objects_to_traversal(revs, mark_recent))
196 die("unable to mark recent objects");
197 if (prepare_revision_walk(revs))
198 die("revision walk setup failed");
199 traverse_commit_list(revs, mark_commit, mark_object, &cp);
202 display_progress(cp.progress, cp.count);