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90c62155 SB |
1 | #ifndef OBJECT_STORE_H |
2 | #define OBJECT_STORE_H | |
3 | ||
031dc927 | 4 | struct alternate_object_database { |
0d4a1321 SB |
5 | struct alternate_object_database *next; |
6 | ||
7 | /* see alt_scratch_buf() */ | |
8 | struct strbuf scratch; | |
9 | size_t base_len; | |
10 | ||
11 | /* | |
12 | * Used to store the results of readdir(3) calls when searching | |
13 | * for unique abbreviated hashes. This cache is never | |
14 | * invalidated, thus it's racy and not necessarily accurate. | |
15 | * That's fine for its purpose; don't use it for tasks requiring | |
16 | * greater accuracy! | |
17 | */ | |
18 | char loose_objects_subdir_seen[256]; | |
19 | struct oid_array loose_objects_cache; | |
20 | ||
77f012e8 SB |
21 | /* |
22 | * Path to the alternative object store. If this is a relative path, | |
23 | * it is relative to the current working directory. | |
24 | */ | |
0d4a1321 | 25 | char path[FLEX_ARRAY]; |
031dc927 | 26 | }; |
13068bf0 | 27 | void prepare_alt_odb(struct repository *r); |
0d4a1321 SB |
28 | char *compute_alternate_path(const char *path, struct strbuf *err); |
29 | typedef int alt_odb_fn(struct alternate_object_database *, void *); | |
30 | int foreach_alt_odb(alt_odb_fn, void*); | |
31 | ||
32 | /* | |
33 | * Allocate a "struct alternate_object_database" but do _not_ actually | |
34 | * add it to the list of alternates. | |
35 | */ | |
36 | struct alternate_object_database *alloc_alt_odb(const char *dir); | |
37 | ||
38 | /* | |
39 | * Add the directory to the on-disk alternates file; the new entry will also | |
40 | * take effect in the current process. | |
41 | */ | |
42 | void add_to_alternates_file(const char *dir); | |
43 | ||
44 | /* | |
45 | * Add the directory to the in-memory list of alternates (along with any | |
46 | * recursive alternates it points to), but do not modify the on-disk alternates | |
47 | * file. | |
48 | */ | |
49 | void add_to_alternates_memory(const char *dir); | |
50 | ||
51 | /* | |
52 | * Returns a scratch strbuf pre-filled with the alternate object directory, | |
53 | * including a trailing slash, which can be used to access paths in the | |
54 | * alternate. Always use this over direct access to alt->scratch, as it | |
55 | * cleans up any previous use of the scratch buffer. | |
56 | */ | |
57 | struct strbuf *alt_scratch_buf(struct alternate_object_database *alt); | |
58 | ||
a80d72db SB |
59 | struct packed_git { |
60 | struct packed_git *next; | |
61 | struct list_head mru; | |
62 | struct pack_window *windows; | |
63 | off_t pack_size; | |
64 | const void *index_data; | |
65 | size_t index_size; | |
66 | uint32_t num_objects; | |
67 | uint32_t num_bad_objects; | |
68 | unsigned char *bad_object_sha1; | |
69 | int index_version; | |
70 | time_t mtime; | |
71 | int pack_fd; | |
72 | unsigned pack_local:1, | |
73 | pack_keep:1, | |
74 | freshened:1, | |
75 | do_not_close:1, | |
76 | pack_promisor:1; | |
77 | unsigned char sha1[20]; | |
78 | struct revindex_entry *revindex; | |
79 | /* something like ".git/objects/pack/xxxxx.pack" */ | |
80 | char pack_name[FLEX_ARRAY]; /* more */ | |
81 | }; | |
82 | ||
90c62155 SB |
83 | struct raw_object_store { |
84 | /* | |
85 | * Path to the repository's object store. | |
86 | * Cannot be NULL after initialization. | |
87 | */ | |
88 | char *objectdir; | |
89 | ||
90 | /* Path to extra alternate object database if not NULL */ | |
91 | char *alternate_db; | |
031dc927 SB |
92 | |
93 | struct alternate_object_database *alt_odb_list; | |
94 | struct alternate_object_database **alt_odb_tail; | |
a80d72db SB |
95 | |
96 | /* | |
97 | * private data | |
98 | * | |
99 | * should only be accessed directly by packfile.c | |
100 | */ | |
101 | ||
102 | struct packed_git *packed_git; | |
103 | /* A most-recently-used ordered version of the packed_git list. */ | |
104 | struct list_head packed_git_mru; | |
5508f693 | 105 | |
9a00580d SB |
106 | /* |
107 | * A fast, rough count of the number of objects in the repository. | |
108 | * These two fields are not meant for direct access. Use | |
109 | * approximate_object_count() instead. | |
110 | */ | |
111 | unsigned long approximate_object_count; | |
112 | unsigned approximate_object_count_valid : 1; | |
113 | ||
5508f693 SB |
114 | /* |
115 | * Whether packed_git has already been populated with this repository's | |
116 | * packs. | |
117 | */ | |
118 | unsigned packed_git_initialized : 1; | |
90c62155 SB |
119 | }; |
120 | ||
121 | struct raw_object_store *raw_object_store_new(void); | |
122 | void raw_object_store_clear(struct raw_object_store *o); | |
123 | ||
cf78ae4f SB |
124 | /* |
125 | * Put in `buf` the name of the file in the local object database that | |
126 | * would be used to store a loose object with the specified sha1. | |
127 | */ | |
a68377b5 | 128 | void sha1_file_name(struct repository *r, struct strbuf *buf, const unsigned char *sha1); |
cf78ae4f | 129 | |
bd27f50c | 130 | void *map_sha1_file(struct repository *r, const unsigned char *sha1, unsigned long *size); |
e35454fa | 131 | |
90c62155 | 132 | #endif /* OBJECT_STORE_H */ |