The third batch
[git.git] / oidmap.c
blobb0841a0f5870bafdcaf3482ed725e43ddaf5d461
1 #include "cache.h"
2 #include "oidmap.h"
4 static int oidmap_neq(const void *hashmap_cmp_fn_data,
5 const void *entry, const void *entry_or_key,
6 const void *keydata)
8 const struct oidmap_entry *entry_ = entry;
9 if (keydata)
10 return !oideq(&entry_->oid, (const struct object_id *) keydata);
11 return !oideq(&entry_->oid,
12 &((const struct oidmap_entry *) entry_or_key)->oid);
15 static int hash(const struct object_id *oid)
17 int hash;
18 memcpy(&hash, oid->hash, sizeof(hash));
19 return hash;
22 void oidmap_init(struct oidmap *map, size_t initial_size)
24 hashmap_init(&map->map, oidmap_neq, NULL, initial_size);
27 void oidmap_free(struct oidmap *map, int free_entries)
29 if (!map)
30 return;
31 hashmap_free(&map->map, free_entries);
34 void *oidmap_get(const struct oidmap *map, const struct object_id *key)
36 if (!map->map.cmpfn)
37 return NULL;
39 return hashmap_get_from_hash(&map->map, hash(key), key);
42 void *oidmap_remove(struct oidmap *map, const struct object_id *key)
44 struct hashmap_entry entry;
46 if (!map->map.cmpfn)
47 oidmap_init(map, 0);
49 hashmap_entry_init(&entry, hash(key));
50 return hashmap_remove(&map->map, &entry, key);
53 void *oidmap_put(struct oidmap *map, void *entry)
55 struct oidmap_entry *to_put = entry;
57 if (!map->map.cmpfn)
58 oidmap_init(map, 0);
60 hashmap_entry_init(&to_put->internal_entry, hash(&to_put->oid));
61 return hashmap_put(&map->map, to_put);