object-store: free alt_odb_list
[git/git.git] / object-store.h
CommitLineData
90c62155
SB
1#ifndef OBJECT_STORE_H
2#define OBJECT_STORE_H
3
031dc927 4struct 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
21 char path[FLEX_ARRAY];
031dc927 22};
0d4a1321
SB
23void prepare_alt_odb(void);
24char *compute_alternate_path(const char *path, struct strbuf *err);
25typedef int alt_odb_fn(struct alternate_object_database *, void *);
26int foreach_alt_odb(alt_odb_fn, void*);
27
28/*
29 * Allocate a "struct alternate_object_database" but do _not_ actually
30 * add it to the list of alternates.
31 */
32struct alternate_object_database *alloc_alt_odb(const char *dir);
33
34/*
35 * Add the directory to the on-disk alternates file; the new entry will also
36 * take effect in the current process.
37 */
38void add_to_alternates_file(const char *dir);
39
40/*
41 * Add the directory to the in-memory list of alternates (along with any
42 * recursive alternates it points to), but do not modify the on-disk alternates
43 * file.
44 */
45void add_to_alternates_memory(const char *dir);
46
47/*
48 * Returns a scratch strbuf pre-filled with the alternate object directory,
49 * including a trailing slash, which can be used to access paths in the
50 * alternate. Always use this over direct access to alt->scratch, as it
51 * cleans up any previous use of the scratch buffer.
52 */
53struct strbuf *alt_scratch_buf(struct alternate_object_database *alt);
54
90c62155
SB
55struct raw_object_store {
56 /*
57 * Path to the repository's object store.
58 * Cannot be NULL after initialization.
59 */
60 char *objectdir;
61
62 /* Path to extra alternate object database if not NULL */
63 char *alternate_db;
031dc927
SB
64
65 struct alternate_object_database *alt_odb_list;
66 struct alternate_object_database **alt_odb_tail;
90c62155
SB
67};
68
69struct raw_object_store *raw_object_store_new(void);
70void raw_object_store_clear(struct raw_object_store *o);
71
72#endif /* OBJECT_STORE_H */