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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 | */ | |
de1e67d0 | 46 | static void mark_object(struct object *obj, const char *name, void *data) |
5f78a431 JK |
47 | { |
48 | update_progress(data); | |
49 | } | |
50 | ||
51 | static void mark_commit(struct commit *c, void *data) | |
52 | { | |
de1e67d0 | 53 | mark_object(&c->object, NULL, data); |
5f78a431 JK |
54 | } |
55 | ||
d3038d22 JK |
56 | struct recent_data { |
57 | struct rev_info *revs; | |
58 | unsigned long timestamp; | |
59 | }; | |
60 | ||
61 | static void add_recent_object(const unsigned char *sha1, | |
62 | unsigned long mtime, | |
63 | struct recent_data *data) | |
64 | { | |
65 | struct object *obj; | |
66 | enum object_type type; | |
67 | ||
68 | if (mtime <= data->timestamp) | |
69 | return; | |
70 | ||
71 | /* | |
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. | |
77 | */ | |
78 | type = sha1_object_info(sha1, NULL); | |
79 | if (type < 0) | |
80 | die("unable to get object info for %s", sha1_to_hex(sha1)); | |
81 | ||
82 | switch (type) { | |
83 | case OBJ_TAG: | |
84 | case OBJ_COMMIT: | |
85 | obj = parse_object_or_die(sha1, NULL); | |
86 | break; | |
87 | case OBJ_TREE: | |
88 | obj = (struct object *)lookup_tree(sha1); | |
89 | break; | |
90 | case OBJ_BLOB: | |
91 | obj = (struct object *)lookup_blob(sha1); | |
92 | break; | |
93 | default: | |
94 | die("unknown object type for %s: %s", | |
95 | sha1_to_hex(sha1), typename(type)); | |
96 | } | |
97 | ||
98 | if (!obj) | |
99 | die("unable to lookup %s", sha1_to_hex(sha1)); | |
100 | ||
101 | add_pending_object(data->revs, obj, ""); | |
102 | } | |
103 | ||
104 | static int add_recent_loose(const unsigned char *sha1, | |
105 | const char *path, void *data) | |
106 | { | |
107 | struct stat st; | |
108 | struct object *obj = lookup_object(sha1); | |
109 | ||
110 | if (obj && obj->flags & SEEN) | |
111 | return 0; | |
112 | ||
113 | if (stat(path, &st) < 0) { | |
114 | /* | |
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. | |
119 | */ | |
120 | if (errno == ENOENT) | |
121 | return 0; | |
122 | return error("unable to stat %s: %s", | |
123 | sha1_to_hex(sha1), strerror(errno)); | |
124 | } | |
125 | ||
126 | add_recent_object(sha1, st.st_mtime, data); | |
127 | return 0; | |
128 | } | |
129 | ||
130 | static int add_recent_packed(const unsigned char *sha1, | |
131 | struct packed_git *p, uint32_t pos, | |
132 | void *data) | |
133 | { | |
134 | struct object *obj = lookup_object(sha1); | |
135 | ||
136 | if (obj && obj->flags & SEEN) | |
137 | return 0; | |
138 | add_recent_object(sha1, p->mtime, data); | |
139 | return 0; | |
140 | } | |
141 | ||
abcb8655 JK |
142 | int add_unseen_recent_objects_to_traversal(struct rev_info *revs, |
143 | unsigned long timestamp) | |
d3038d22 JK |
144 | { |
145 | struct recent_data data; | |
146 | int r; | |
147 | ||
148 | data.revs = revs; | |
149 | data.timestamp = timestamp; | |
150 | ||
1385bb7b JK |
151 | r = for_each_loose_object(add_recent_loose, &data, |
152 | FOR_EACH_OBJECT_LOCAL_ONLY); | |
d3038d22 JK |
153 | if (r) |
154 | return r; | |
1385bb7b JK |
155 | return for_each_packed_object(add_recent_packed, &data, |
156 | FOR_EACH_OBJECT_LOCAL_ONLY); | |
d3038d22 JK |
157 | } |
158 | ||
dc347195 | 159 | void mark_reachable_objects(struct rev_info *revs, int mark_reflog, |
d3038d22 | 160 | unsigned long mark_recent, |
dc347195 | 161 | struct progress *progress) |
94421474 | 162 | { |
0b26abc0 JK |
163 | struct connectivity_progress cp; |
164 | ||
94421474 JH |
165 | /* |
166 | * Set up revision parsing, and mark us as being interested | |
167 | * in all object types, not just commits. | |
168 | */ | |
169 | revs->tag_objects = 1; | |
170 | revs->blob_objects = 1; | |
171 | revs->tree_objects = 1; | |
172 | ||
173 | /* Add all refs from the index file */ | |
1be111d8 | 174 | add_index_objects_to_pending(revs, 0); |
94421474 JH |
175 | |
176 | /* Add all external refs */ | |
635170f2 | 177 | for_each_ref(add_one_ref, revs); |
94421474 | 178 | |
c40fdd01 | 179 | /* detached HEAD is not included in the list above */ |
635170f2 | 180 | head_ref(add_one_ref, revs); |
c40fdd01 | 181 | |
eb8381c8 | 182 | /* Add all reflog info */ |
94421474 | 183 | if (mark_reflog) |
718ccc97 | 184 | add_reflogs_to_pending(revs, 0); |
94421474 | 185 | |
0b26abc0 JK |
186 | cp.progress = progress; |
187 | cp.count = 0; | |
188 | ||
94421474 JH |
189 | /* |
190 | * Set up the revision walk - this will move all commits | |
191 | * from the pending list to the commit walking list. | |
192 | */ | |
3d51e1b5 MK |
193 | if (prepare_revision_walk(revs)) |
194 | die("revision walk setup failed"); | |
5f78a431 | 195 | traverse_commit_list(revs, mark_commit, mark_object, &cp); |
d3038d22 JK |
196 | |
197 | if (mark_recent) { | |
198 | revs->ignore_missing_links = 1; | |
199 | if (add_unseen_recent_objects_to_traversal(revs, mark_recent)) | |
200 | die("unable to mark recent objects"); | |
201 | if (prepare_revision_walk(revs)) | |
202 | die("revision walk setup failed"); | |
203 | traverse_commit_list(revs, mark_commit, mark_object, &cp); | |
204 | } | |
205 | ||
0b26abc0 | 206 | display_progress(cp.progress, cp.count); |
94421474 | 207 | } |