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Commit | Line | Data |
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94421474 JH |
1 | #include "cache.h" |
2 | #include "refs.h" | |
3 | #include "tag.h" | |
4 | #include "commit.h" | |
5 | #include "blob.h" | |
6 | #include "diff.h" | |
7 | #include "revision.h" | |
8 | #include "reachable.h" | |
9 | #include "cache-tree.h" | |
dc347195 | 10 | #include "progress.h" |
5f78a431 | 11 | #include "list-objects.h" |
94421474 | 12 | |
0b26abc0 JK |
13 | struct connectivity_progress { |
14 | struct progress *progress; | |
15 | unsigned long count; | |
16 | }; | |
17 | ||
18 | static void update_progress(struct connectivity_progress *cp) | |
19 | { | |
20 | cp->count++; | |
21 | if ((cp->count & 1023) == 0) | |
22 | display_progress(cp->progress, cp->count); | |
23 | } | |
24 | ||
94421474 JH |
25 | static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
26 | { | |
f7892d18 | 27 | struct object *object = parse_object_or_die(sha1, path); |
94421474 JH |
28 | struct rev_info *revs = (struct rev_info *)cb_data; |
29 | ||
94421474 JH |
30 | add_pending_object(revs, object, ""); |
31 | ||
32 | return 0; | |
33 | } | |
34 | ||
94421474 JH |
35 | static void add_one_tree(const unsigned char *sha1, struct rev_info *revs) |
36 | { | |
37 | struct tree *tree = lookup_tree(sha1); | |
c3406635 MK |
38 | if (tree) |
39 | add_pending_object(revs, &tree->object, ""); | |
94421474 JH |
40 | } |
41 | ||
42 | static void add_cache_tree(struct cache_tree *it, struct rev_info *revs) | |
43 | { | |
44 | int i; | |
45 | ||
46 | if (it->entry_count >= 0) | |
47 | add_one_tree(it->sha1, revs); | |
48 | for (i = 0; i < it->subtree_nr; i++) | |
49 | add_cache_tree(it->down[i]->cache_tree, revs); | |
50 | } | |
51 | ||
52 | static void add_cache_refs(struct rev_info *revs) | |
53 | { | |
54 | int i; | |
55 | ||
56 | read_cache(); | |
57 | for (i = 0; i < active_nr; i++) { | |
37254279 JK |
58 | struct blob *blob; |
59 | ||
8d2244ba AP |
60 | /* |
61 | * The index can contain blobs and GITLINKs, GITLINKs are hashes | |
62 | * that don't actually point to objects in the repository, it's | |
63 | * almost guaranteed that they are NOT blobs, so we don't call | |
64 | * lookup_blob() on them, to avoid populating the hash table | |
65 | * with invalid information | |
66 | */ | |
7a51ed66 | 67 | if (S_ISGITLINK(active_cache[i]->ce_mode)) |
8d2244ba AP |
68 | continue; |
69 | ||
37254279 JK |
70 | blob = lookup_blob(active_cache[i]->sha1); |
71 | if (blob) | |
72 | blob->object.flags |= SEEN; | |
73 | ||
94421474 JH |
74 | /* |
75 | * We could add the blobs to the pending list, but quite | |
76 | * frankly, we don't care. Once we've looked them up, and | |
77 | * added them as objects, we've really done everything | |
78 | * there is to do for a blob | |
79 | */ | |
80 | } | |
81 | if (active_cache_tree) | |
82 | add_cache_tree(active_cache_tree, revs); | |
83 | } | |
84 | ||
5f78a431 JK |
85 | /* |
86 | * The traversal will have already marked us as SEEN, so we | |
87 | * only need to handle any progress reporting here. | |
88 | */ | |
89 | static void mark_object(struct object *obj, const struct name_path *path, | |
90 | const char *name, void *data) | |
91 | { | |
92 | update_progress(data); | |
93 | } | |
94 | ||
95 | static void mark_commit(struct commit *c, void *data) | |
96 | { | |
97 | mark_object(&c->object, NULL, NULL, data); | |
98 | } | |
99 | ||
d3038d22 JK |
100 | struct recent_data { |
101 | struct rev_info *revs; | |
102 | unsigned long timestamp; | |
103 | }; | |
104 | ||
105 | static void add_recent_object(const unsigned char *sha1, | |
106 | unsigned long mtime, | |
107 | struct recent_data *data) | |
108 | { | |
109 | struct object *obj; | |
110 | enum object_type type; | |
111 | ||
112 | if (mtime <= data->timestamp) | |
113 | return; | |
114 | ||
115 | /* | |
116 | * We do not want to call parse_object here, because | |
117 | * inflating blobs and trees could be very expensive. | |
118 | * However, we do need to know the correct type for | |
119 | * later processing, and the revision machinery expects | |
120 | * commits and tags to have been parsed. | |
121 | */ | |
122 | type = sha1_object_info(sha1, NULL); | |
123 | if (type < 0) | |
124 | die("unable to get object info for %s", sha1_to_hex(sha1)); | |
125 | ||
126 | switch (type) { | |
127 | case OBJ_TAG: | |
128 | case OBJ_COMMIT: | |
129 | obj = parse_object_or_die(sha1, NULL); | |
130 | break; | |
131 | case OBJ_TREE: | |
132 | obj = (struct object *)lookup_tree(sha1); | |
133 | break; | |
134 | case OBJ_BLOB: | |
135 | obj = (struct object *)lookup_blob(sha1); | |
136 | break; | |
137 | default: | |
138 | die("unknown object type for %s: %s", | |
139 | sha1_to_hex(sha1), typename(type)); | |
140 | } | |
141 | ||
142 | if (!obj) | |
143 | die("unable to lookup %s", sha1_to_hex(sha1)); | |
144 | ||
145 | add_pending_object(data->revs, obj, ""); | |
146 | } | |
147 | ||
148 | static int add_recent_loose(const unsigned char *sha1, | |
149 | const char *path, void *data) | |
150 | { | |
151 | struct stat st; | |
152 | struct object *obj = lookup_object(sha1); | |
153 | ||
154 | if (obj && obj->flags & SEEN) | |
155 | return 0; | |
156 | ||
157 | if (stat(path, &st) < 0) { | |
158 | /* | |
159 | * It's OK if an object went away during our iteration; this | |
160 | * could be due to a simultaneous repack. But anything else | |
161 | * we should abort, since we might then fail to mark objects | |
162 | * which should not be pruned. | |
163 | */ | |
164 | if (errno == ENOENT) | |
165 | return 0; | |
166 | return error("unable to stat %s: %s", | |
167 | sha1_to_hex(sha1), strerror(errno)); | |
168 | } | |
169 | ||
170 | add_recent_object(sha1, st.st_mtime, data); | |
171 | return 0; | |
172 | } | |
173 | ||
174 | static int add_recent_packed(const unsigned char *sha1, | |
175 | struct packed_git *p, uint32_t pos, | |
176 | void *data) | |
177 | { | |
178 | struct object *obj = lookup_object(sha1); | |
179 | ||
180 | if (obj && obj->flags & SEEN) | |
181 | return 0; | |
182 | add_recent_object(sha1, p->mtime, data); | |
183 | return 0; | |
184 | } | |
185 | ||
186 | static int add_unseen_recent_objects_to_traversal(struct rev_info *revs, | |
187 | unsigned long timestamp) | |
188 | { | |
189 | struct recent_data data; | |
190 | int r; | |
191 | ||
192 | data.revs = revs; | |
193 | data.timestamp = timestamp; | |
194 | ||
195 | r = for_each_loose_object(add_recent_loose, &data); | |
196 | if (r) | |
197 | return r; | |
198 | return for_each_packed_object(add_recent_packed, &data); | |
199 | } | |
200 | ||
dc347195 | 201 | void mark_reachable_objects(struct rev_info *revs, int mark_reflog, |
d3038d22 | 202 | unsigned long mark_recent, |
dc347195 | 203 | struct progress *progress) |
94421474 | 204 | { |
0b26abc0 JK |
205 | struct connectivity_progress cp; |
206 | ||
94421474 JH |
207 | /* |
208 | * Set up revision parsing, and mark us as being interested | |
209 | * in all object types, not just commits. | |
210 | */ | |
211 | revs->tag_objects = 1; | |
212 | revs->blob_objects = 1; | |
213 | revs->tree_objects = 1; | |
214 | ||
215 | /* Add all refs from the index file */ | |
216 | add_cache_refs(revs); | |
217 | ||
218 | /* Add all external refs */ | |
219 | for_each_ref(add_one_ref, revs); | |
220 | ||
c40fdd01 MK |
221 | /* detached HEAD is not included in the list above */ |
222 | head_ref(add_one_ref, revs); | |
223 | ||
eb8381c8 | 224 | /* Add all reflog info */ |
94421474 | 225 | if (mark_reflog) |
718ccc97 | 226 | add_reflogs_to_pending(revs, 0); |
94421474 | 227 | |
0b26abc0 JK |
228 | cp.progress = progress; |
229 | cp.count = 0; | |
230 | ||
94421474 JH |
231 | /* |
232 | * Set up the revision walk - this will move all commits | |
233 | * from the pending list to the commit walking list. | |
234 | */ | |
3d51e1b5 MK |
235 | if (prepare_revision_walk(revs)) |
236 | die("revision walk setup failed"); | |
5f78a431 | 237 | traverse_commit_list(revs, mark_commit, mark_object, &cp); |
d3038d22 JK |
238 | |
239 | if (mark_recent) { | |
240 | revs->ignore_missing_links = 1; | |
241 | if (add_unseen_recent_objects_to_traversal(revs, mark_recent)) | |
242 | die("unable to mark recent objects"); | |
243 | if (prepare_revision_walk(revs)) | |
244 | die("revision walk setup failed"); | |
245 | traverse_commit_list(revs, mark_commit, mark_object, &cp); | |
246 | } | |
247 | ||
0b26abc0 | 248 | display_progress(cp.progress, cp.count); |
94421474 | 249 | } |