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 struct object_id
*oid
,
26 int flag
, void *cb_data
)
28 struct rev_info
*revs
= (struct rev_info
*)cb_data
;
29 struct object
*object
;
31 if ((flag
& REF_ISSYMREF
) && (flag
& REF_ISBROKEN
)) {
32 warning("symbolic ref is dangling: %s", path
);
36 object
= parse_object_or_die(oid
->hash
, path
);
37 add_pending_object(revs
, object
, "");
43 * The traversal will have already marked us as SEEN, so we
44 * only need to handle any progress reporting here.
46 static void mark_object(struct object
*obj
, const char *name
, void *data
)
48 update_progress(data
);
51 static void mark_commit(struct commit
*c
, void *data
)
53 mark_object(&c
->object
, NULL
, data
);
57 struct rev_info
*revs
;
58 unsigned long timestamp
;
61 static void add_recent_object(const unsigned char *sha1
,
63 struct recent_data
*data
)
66 enum object_type type
;
68 if (mtime
<= data
->timestamp
)
72 * We do not want to call parse_object here, because
73 * inflating blobs and trees could be very expensive.
74 * However, we do need to know the correct type for
75 * later processing, and the revision machinery expects
76 * commits and tags to have been parsed.
78 type
= sha1_object_info(sha1
, NULL
);
80 die("unable to get object info for %s", sha1_to_hex(sha1
));
85 obj
= parse_object_or_die(sha1
, NULL
);
88 obj
= (struct object
*)lookup_tree(sha1
);
91 obj
= (struct object
*)lookup_blob(sha1
);
94 die("unknown object type for %s: %s",
95 sha1_to_hex(sha1
), typename(type
));
99 die("unable to lookup %s", sha1_to_hex(sha1
));
101 add_pending_object(data
->revs
, obj
, "");
104 static int add_recent_loose(const unsigned char *sha1
,
105 const char *path
, void *data
)
108 struct object
*obj
= lookup_object(sha1
);
110 if (obj
&& obj
->flags
& SEEN
)
113 if (stat(path
, &st
) < 0) {
115 * It's OK if an object went away during our iteration; this
116 * could be due to a simultaneous repack. But anything else
117 * we should abort, since we might then fail to mark objects
118 * which should not be pruned.
122 return error_errno("unable to stat %s", sha1_to_hex(sha1
));
125 add_recent_object(sha1
, st
.st_mtime
, data
);
129 static int add_recent_packed(const unsigned char *sha1
,
130 struct packed_git
*p
, uint32_t pos
,
133 struct object
*obj
= lookup_object(sha1
);
135 if (obj
&& obj
->flags
& SEEN
)
137 add_recent_object(sha1
, p
->mtime
, data
);
141 int add_unseen_recent_objects_to_traversal(struct rev_info
*revs
,
142 unsigned long timestamp
)
144 struct recent_data data
;
148 data
.timestamp
= timestamp
;
150 r
= for_each_loose_object(add_recent_loose
, &data
,
151 FOR_EACH_OBJECT_LOCAL_ONLY
);
154 return for_each_packed_object(add_recent_packed
, &data
,
155 FOR_EACH_OBJECT_LOCAL_ONLY
);
158 void mark_reachable_objects(struct rev_info
*revs
, int mark_reflog
,
159 unsigned long mark_recent
,
160 struct progress
*progress
)
162 struct connectivity_progress cp
;
165 * Set up revision parsing, and mark us as being interested
166 * in all object types, not just commits.
168 revs
->tag_objects
= 1;
169 revs
->blob_objects
= 1;
170 revs
->tree_objects
= 1;
172 /* Add all refs from the index file */
173 add_index_objects_to_pending(revs
, 0);
175 /* Add all external refs */
176 for_each_ref(add_one_ref
, revs
);
178 /* detached HEAD is not included in the list above */
179 head_ref(add_one_ref
, revs
);
181 /* Add all reflog info */
183 add_reflogs_to_pending(revs
, 0);
185 cp
.progress
= progress
;
189 * Set up the revision walk - this will move all commits
190 * from the pending list to the commit walking list.
192 if (prepare_revision_walk(revs
))
193 die("revision walk setup failed");
194 traverse_commit_list(revs
, mark_commit
, mark_object
, &cp
);
197 revs
->ignore_missing_links
= 1;
198 if (add_unseen_recent_objects_to_traversal(revs
, mark_recent
))
199 die("unable to mark recent objects");
200 if (prepare_revision_walk(revs
))
201 die("revision walk setup failed");
202 traverse_commit_list(revs
, mark_commit
, mark_object
, &cp
);
205 display_progress(cp
.progress
, cp
.count
);