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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 | ||
635170f2 MH |
25 | static int add_one_ref(const char *path, const struct object_id *oid, |
26 | int flag, void *cb_data) | |
94421474 | 27 | { |
94421474 | 28 | struct rev_info *revs = (struct rev_info *)cb_data; |
14886b40 | 29 | struct object *object; |
94421474 | 30 | |
14886b40 JS |
31 | if ((flag & REF_ISSYMREF) && (flag & REF_ISBROKEN)) { |
32 | warning("symbolic ref is dangling: %s", path); | |
33 | return 0; | |
34 | } | |
35 | ||
1018f3ee | 36 | object = parse_object_or_die(oid->hash, path); |
94421474 JH |
37 | add_pending_object(revs, object, ""); |
38 | ||
39 | return 0; | |
40 | } | |
41 | ||
5f78a431 JK |
42 | /* |
43 | * The traversal will have already marked us as SEEN, so we | |
44 | * only need to handle any progress reporting here. | |
45 | */ | |
46 | static void mark_object(struct object *obj, const struct name_path *path, | |
47 | const char *name, void *data) | |
48 | { | |
49 | update_progress(data); | |
50 | } | |
51 | ||
52 | static void mark_commit(struct commit *c, void *data) | |
53 | { | |
54 | mark_object(&c->object, NULL, NULL, data); | |
55 | } | |
56 | ||
d3038d22 JK |
57 | struct recent_data { |
58 | struct rev_info *revs; | |
59 | unsigned long timestamp; | |
60 | }; | |
61 | ||
62 | static void add_recent_object(const unsigned char *sha1, | |
63 | unsigned long mtime, | |
64 | struct recent_data *data) | |
65 | { | |
66 | struct object *obj; | |
67 | enum object_type type; | |
68 | ||
69 | if (mtime <= data->timestamp) | |
70 | return; | |
71 | ||
72 | /* | |
73 | * We do not want to call parse_object here, because | |
74 | * inflating blobs and trees could be very expensive. | |
75 | * However, we do need to know the correct type for | |
76 | * later processing, and the revision machinery expects | |
77 | * commits and tags to have been parsed. | |
78 | */ | |
79 | type = sha1_object_info(sha1, NULL); | |
80 | if (type < 0) | |
81 | die("unable to get object info for %s", sha1_to_hex(sha1)); | |
82 | ||
83 | switch (type) { | |
84 | case OBJ_TAG: | |
85 | case OBJ_COMMIT: | |
86 | obj = parse_object_or_die(sha1, NULL); | |
87 | break; | |
88 | case OBJ_TREE: | |
89 | obj = (struct object *)lookup_tree(sha1); | |
90 | break; | |
91 | case OBJ_BLOB: | |
92 | obj = (struct object *)lookup_blob(sha1); | |
93 | break; | |
94 | default: | |
95 | die("unknown object type for %s: %s", | |
96 | sha1_to_hex(sha1), typename(type)); | |
97 | } | |
98 | ||
99 | if (!obj) | |
100 | die("unable to lookup %s", sha1_to_hex(sha1)); | |
101 | ||
102 | add_pending_object(data->revs, obj, ""); | |
103 | } | |
104 | ||
105 | static int add_recent_loose(const unsigned char *sha1, | |
106 | const char *path, void *data) | |
107 | { | |
108 | struct stat st; | |
109 | struct object *obj = lookup_object(sha1); | |
110 | ||
111 | if (obj && obj->flags & SEEN) | |
112 | return 0; | |
113 | ||
114 | if (stat(path, &st) < 0) { | |
115 | /* | |
116 | * It's OK if an object went away during our iteration; this | |
117 | * could be due to a simultaneous repack. But anything else | |
118 | * we should abort, since we might then fail to mark objects | |
119 | * which should not be pruned. | |
120 | */ | |
121 | if (errno == ENOENT) | |
122 | return 0; | |
123 | return error("unable to stat %s: %s", | |
124 | sha1_to_hex(sha1), strerror(errno)); | |
125 | } | |
126 | ||
127 | add_recent_object(sha1, st.st_mtime, data); | |
128 | return 0; | |
129 | } | |
130 | ||
131 | static int add_recent_packed(const unsigned char *sha1, | |
132 | struct packed_git *p, uint32_t pos, | |
133 | void *data) | |
134 | { | |
135 | struct object *obj = lookup_object(sha1); | |
136 | ||
137 | if (obj && obj->flags & SEEN) | |
138 | return 0; | |
139 | add_recent_object(sha1, p->mtime, data); | |
140 | return 0; | |
141 | } | |
142 | ||
abcb8655 JK |
143 | int add_unseen_recent_objects_to_traversal(struct rev_info *revs, |
144 | unsigned long timestamp) | |
d3038d22 JK |
145 | { |
146 | struct recent_data data; | |
147 | int r; | |
148 | ||
149 | data.revs = revs; | |
150 | data.timestamp = timestamp; | |
151 | ||
1385bb7b JK |
152 | r = for_each_loose_object(add_recent_loose, &data, |
153 | FOR_EACH_OBJECT_LOCAL_ONLY); | |
d3038d22 JK |
154 | if (r) |
155 | return r; | |
1385bb7b JK |
156 | return for_each_packed_object(add_recent_packed, &data, |
157 | FOR_EACH_OBJECT_LOCAL_ONLY); | |
d3038d22 JK |
158 | } |
159 | ||
dc347195 | 160 | void mark_reachable_objects(struct rev_info *revs, int mark_reflog, |
d3038d22 | 161 | unsigned long mark_recent, |
dc347195 | 162 | struct progress *progress) |
94421474 | 163 | { |
0b26abc0 JK |
164 | struct connectivity_progress cp; |
165 | ||
94421474 JH |
166 | /* |
167 | * Set up revision parsing, and mark us as being interested | |
168 | * in all object types, not just commits. | |
169 | */ | |
170 | revs->tag_objects = 1; | |
171 | revs->blob_objects = 1; | |
172 | revs->tree_objects = 1; | |
173 | ||
174 | /* Add all refs from the index file */ | |
1be111d8 | 175 | add_index_objects_to_pending(revs, 0); |
94421474 JH |
176 | |
177 | /* Add all external refs */ | |
635170f2 | 178 | for_each_ref(add_one_ref, revs); |
94421474 | 179 | |
c40fdd01 | 180 | /* detached HEAD is not included in the list above */ |
635170f2 | 181 | head_ref(add_one_ref, revs); |
c40fdd01 | 182 | |
eb8381c8 | 183 | /* Add all reflog info */ |
94421474 | 184 | if (mark_reflog) |
718ccc97 | 185 | add_reflogs_to_pending(revs, 0); |
94421474 | 186 | |
0b26abc0 JK |
187 | cp.progress = progress; |
188 | cp.count = 0; | |
189 | ||
94421474 JH |
190 | /* |
191 | * Set up the revision walk - this will move all commits | |
192 | * from the pending list to the commit walking list. | |
193 | */ | |
3d51e1b5 MK |
194 | if (prepare_revision_walk(revs)) |
195 | die("revision walk setup failed"); | |
5f78a431 | 196 | traverse_commit_list(revs, mark_commit, mark_object, &cp); |
d3038d22 JK |
197 | |
198 | if (mark_recent) { | |
199 | revs->ignore_missing_links = 1; | |
200 | if (add_unseen_recent_objects_to_traversal(revs, mark_recent)) | |
201 | die("unable to mark recent objects"); | |
202 | if (prepare_revision_walk(revs)) | |
203 | die("revision walk setup failed"); | |
204 | traverse_commit_list(revs, mark_commit, mark_object, &cp); | |
205 | } | |
206 | ||
0b26abc0 | 207 | display_progress(cp.progress, cp.count); |
94421474 | 208 | } |