2 6bef87be 2018-09-11 stsp * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
4 6bef87be 2018-09-11 stsp * Permission to use, copy, modify, and distribute this software for any
5 6bef87be 2018-09-11 stsp * purpose with or without fee is hereby granted, provided that the above
6 6bef87be 2018-09-11 stsp * copyright notice and this permission notice appear in all copies.
8 6bef87be 2018-09-11 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 6bef87be 2018-09-11 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 6bef87be 2018-09-11 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 6bef87be 2018-09-11 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 6bef87be 2018-09-11 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 6bef87be 2018-09-11 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 6bef87be 2018-09-11 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 6bef87be 2018-09-11 stsp #include <sys/time.h>
18 6bef87be 2018-09-11 stsp #include <sys/queue.h>
20 6bef87be 2018-09-11 stsp #include <stdio.h>
21 6bef87be 2018-09-11 stsp #include <stdlib.h>
22 6bef87be 2018-09-11 stsp #include <string.h>
23 6bef87be 2018-09-11 stsp #include <sha1.h>
24 6bef87be 2018-09-11 stsp #include <zlib.h>
26 6bef87be 2018-09-11 stsp #include "got_error.h"
27 6bef87be 2018-09-11 stsp #include "got_object.h"
29 6bef87be 2018-09-11 stsp #include "got_lib_delta.h"
30 6bef87be 2018-09-11 stsp #include "got_lib_inflate.h"
31 6bef87be 2018-09-11 stsp #include "got_lib_object.h"
32 6bef87be 2018-09-11 stsp #include "got_lib_object_idcache.h"
33 6bef87be 2018-09-11 stsp #include "got_lib_object_cache.h"
35 6bef87be 2018-09-11 stsp #define GOT_OBJECT_CACHE_SIZE_OBJ 1024
36 6bef87be 2018-09-11 stsp #define GOT_OBJECT_CACHE_SIZE_TREE 128
37 6bef87be 2018-09-11 stsp #define GOT_OBJECT_CACHE_SIZE_COMMIT 512
39 6bef87be 2018-09-11 stsp const struct got_error *
40 6bef87be 2018-09-11 stsp got_object_cache_init(struct got_object_cache *cache,
41 6bef87be 2018-09-11 stsp enum got_object_cache_type type)
43 6bef87be 2018-09-11 stsp size_t size;
45 6bef87be 2018-09-11 stsp switch (type) {
46 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_OBJ:
47 6bef87be 2018-09-11 stsp size = GOT_OBJECT_CACHE_SIZE_OBJ;
49 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_TREE:
50 6bef87be 2018-09-11 stsp size = GOT_OBJECT_CACHE_SIZE_TREE;
52 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_COMMIT:
53 6bef87be 2018-09-11 stsp size = GOT_OBJECT_CACHE_SIZE_COMMIT;
57 6bef87be 2018-09-11 stsp cache->idcache = got_object_idcache_alloc(size);
58 6bef87be 2018-09-11 stsp if (cache->idcache == NULL)
59 6bef87be 2018-09-11 stsp return got_error_from_errno();
60 6bef87be 2018-09-11 stsp cache->type = type;
61 6bef87be 2018-09-11 stsp cache->size = size;
62 6bef87be 2018-09-11 stsp return NULL;
65 6bef87be 2018-09-11 stsp const struct got_error *
66 6bef87be 2018-09-11 stsp got_object_cache_add(struct got_object_cache *cache, struct got_object_id *id, void *item)
68 6bef87be 2018-09-11 stsp const struct got_error *err = NULL;
69 6bef87be 2018-09-11 stsp struct got_object_cache_entry *ce;
72 6bef87be 2018-09-11 stsp nelem = got_object_idcache_num_elements(cache->idcache);
73 6bef87be 2018-09-11 stsp if (nelem >= cache->size) {
74 6bef87be 2018-09-11 stsp err = got_object_idcache_remove_least_used((void **)&ce,
75 6bef87be 2018-09-11 stsp cache->idcache);
78 6bef87be 2018-09-11 stsp switch (cache->type) {
79 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_OBJ:
80 6bef87be 2018-09-11 stsp got_object_close(ce->data.obj);
82 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_TREE:
83 6bef87be 2018-09-11 stsp got_object_tree_close(ce->data.tree);
85 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_COMMIT:
86 6bef87be 2018-09-11 stsp got_object_commit_close(ce->data.commit);
92 6bef87be 2018-09-11 stsp ce = calloc(1, sizeof(*ce));
93 6bef87be 2018-09-11 stsp if (ce == NULL)
94 6bef87be 2018-09-11 stsp return got_error_from_errno();
95 6bef87be 2018-09-11 stsp memcpy(&ce->id, id, sizeof(ce->id));
96 6bef87be 2018-09-11 stsp switch (cache->type) {
97 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_OBJ:
98 6bef87be 2018-09-11 stsp ce->data.obj = (struct got_object *)item;
100 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_TREE:
101 6bef87be 2018-09-11 stsp ce->data.tree = (struct got_tree_object *)item;
103 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_COMMIT:
104 6bef87be 2018-09-11 stsp ce->data.commit = (struct got_commit_object *)item;
108 6bef87be 2018-09-11 stsp err = got_object_idcache_add(cache->idcache, id, ce);
110 6bef87be 2018-09-11 stsp if (err->code == GOT_ERR_OBJ_EXISTS) {
112 6bef87be 2018-09-11 stsp err = NULL;
115 6bef87be 2018-09-11 stsp return err;
119 6bef87be 2018-09-11 stsp got_object_cache_get(struct got_object_cache *cache, struct got_object_id *id)
121 6bef87be 2018-09-11 stsp struct got_object_cache_entry *ce;
123 6bef87be 2018-09-11 stsp ce = got_object_idcache_get(cache->idcache, id);
125 6bef87be 2018-09-11 stsp cache->cache_hit++;
126 6bef87be 2018-09-11 stsp switch (cache->type) {
127 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_OBJ:
128 6bef87be 2018-09-11 stsp return ce->data.obj;
129 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_TREE:
130 6bef87be 2018-09-11 stsp return ce->data.tree;
131 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_COMMIT:
132 6bef87be 2018-09-11 stsp return ce->data.commit;
136 6bef87be 2018-09-11 stsp cache->cache_miss++;
137 6bef87be 2018-09-11 stsp return NULL;
141 6bef87be 2018-09-11 stsp static void
142 6bef87be 2018-09-11 stsp print_cache_stats(struct got_object_cache *cache, const char *name)
144 6bef87be 2018-09-11 stsp fprintf(stderr, "%s cache: %d elements, %d hits, %d missed\n",
145 6bef87be 2018-09-11 stsp name, got_object_idcache_num_elements(cache->idcache),
146 6bef87be 2018-09-11 stsp cache->cache_hit, cache->cache_miss);
149 6bef87be 2018-09-11 stsp void check_refcount(struct got_object_id *id, void *data, void *arg)
151 6bef87be 2018-09-11 stsp struct got_object_cache *cache = arg;
152 6bef87be 2018-09-11 stsp struct got_object_cache_entry *ce = data;
153 6bef87be 2018-09-11 stsp struct got_object *obj;
154 6bef87be 2018-09-11 stsp struct got_tree_object *tree;
155 6bef87be 2018-09-11 stsp struct got_commit_object *commit;
156 6bef87be 2018-09-11 stsp char *id_str;
158 6bef87be 2018-09-11 stsp if (got_object_id_str(&id_str, id) != NULL)
161 6bef87be 2018-09-11 stsp switch (cache->type) {
162 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_OBJ:
163 6bef87be 2018-09-11 stsp obj = ce->data.obj;
164 6bef87be 2018-09-11 stsp if (obj->refcnt == 1)
166 6bef87be 2018-09-11 stsp fprintf(stderr, "object %s has %d unclaimed references\n",
167 6bef87be 2018-09-11 stsp id_str, obj->refcnt - 1);
169 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_TREE:
170 6bef87be 2018-09-11 stsp tree = ce->data.tree;
171 6bef87be 2018-09-11 stsp if (tree->refcnt == 1)
173 6bef87be 2018-09-11 stsp fprintf(stderr, "tree %s has %d unclaimed references\n",
174 6bef87be 2018-09-11 stsp id_str, tree->refcnt - 1);
176 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_COMMIT:
177 6bef87be 2018-09-11 stsp commit = ce->data.commit;
178 6bef87be 2018-09-11 stsp if (commit->refcnt == 1)
180 6bef87be 2018-09-11 stsp fprintf(stderr, "commit %s has %d unclaimed references\n",
181 6bef87be 2018-09-11 stsp id_str, commit->refcnt);
184 6bef87be 2018-09-11 stsp free(id_str);
189 6bef87be 2018-09-11 stsp got_object_cache_close(struct got_object_cache *cache)
192 6bef87be 2018-09-11 stsp switch (cache->type) {
193 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_OBJ:
194 6bef87be 2018-09-11 stsp print_cache_stats(cache, "object");
196 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_TREE:
197 6bef87be 2018-09-11 stsp print_cache_stats(cache, "tree");
199 6bef87be 2018-09-11 stsp case GOT_OBJECT_CACHE_TYPE_COMMIT:
200 6bef87be 2018-09-11 stsp print_cache_stats(cache, "commit");
204 6bef87be 2018-09-11 stsp got_object_idcache_for_each(cache->idcache, check_refcount, cache);
207 6bef87be 2018-09-11 stsp if (cache->idcache) {
208 6bef87be 2018-09-11 stsp got_object_idcache_free(cache->idcache);
209 6bef87be 2018-09-11 stsp cache->idcache = NULL;
211 6bef87be 2018-09-11 stsp cache->size = 0;