1#ifndef OBJECT_STORE_H 2#define OBJECT_STORE_H 3 4struct alternate_object_database { 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]; 22}; 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 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; 64 65 struct alternate_object_database *alt_odb_list; 66 struct alternate_object_database **alt_odb_tail; 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 */