1 /*
2  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #define GOT_PACKIDX_CACHE_SIZE	64
18 #define GOT_PACK_CACHE_SIZE	GOT_PACKIDX_CACHE_SIZE
19 
20 #define GOT_OBJECT_CACHE_SIZE	8192
21 
22 struct got_objcache_entry {
23 	SIMPLEQ_ENTRY(got_objcache_entry) entry;
24 	struct got_object_id id;
25 	struct got_object *obj;
26 };
27 
28 struct got_repository {
29 	char *path;
30 	char *path_git_dir;
31 
32 	/* The pack index cache speeds up search for packed objects. */
33 	struct got_packidx *packidx_cache[GOT_PACKIDX_CACHE_SIZE];
34 
35 	/* Open file handles for pack files. */
36 	struct got_pack packs[GOT_PACK_CACHE_SIZE];
37 
38 	SIMPLEQ_HEAD(, got_objcache_entry) objcache;
39 	int ncached;
40 	int cache_hit;
41 	int cache_miss;
42 };
43 
44 const struct got_error*
45 got_repo_cache_object(struct got_repository *, struct got_object_id *,
46     struct got_object *);
47 struct got_object *got_repo_get_cached_object(struct got_repository *,
48     struct got_object_id *);