mirror of
https://github.com/git/git.git
synced 2024-05-18 22:56:07 +02:00
e2a5a028c7
Ensure that an oidmap is initialized before attempting to add, remove, or retrieve an entry by simply performing the initialization step before accessing the underlying hashmap. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
#include "cache.h"
|
|
#include "oidmap.h"
|
|
|
|
static int cmpfn(const void *hashmap_cmp_fn_data,
|
|
const void *entry, const void *entry_or_key,
|
|
const void *keydata)
|
|
{
|
|
const struct oidmap_entry *entry_ = entry;
|
|
if (keydata)
|
|
return oidcmp(&entry_->oid, (const struct object_id *) keydata);
|
|
return oidcmp(&entry_->oid,
|
|
&((const struct oidmap_entry *) entry_or_key)->oid);
|
|
}
|
|
|
|
static int hash(const struct object_id *oid)
|
|
{
|
|
int hash;
|
|
memcpy(&hash, oid->hash, sizeof(hash));
|
|
return hash;
|
|
}
|
|
|
|
void oidmap_init(struct oidmap *map, size_t initial_size)
|
|
{
|
|
hashmap_init(&map->map, cmpfn, NULL, initial_size);
|
|
}
|
|
|
|
void oidmap_free(struct oidmap *map, int free_entries)
|
|
{
|
|
if (!map)
|
|
return;
|
|
hashmap_free(&map->map, free_entries);
|
|
}
|
|
|
|
void *oidmap_get(const struct oidmap *map, const struct object_id *key)
|
|
{
|
|
if (!map->map.cmpfn)
|
|
return NULL;
|
|
|
|
return hashmap_get_from_hash(&map->map, hash(key), key);
|
|
}
|
|
|
|
void *oidmap_remove(struct oidmap *map, const struct object_id *key)
|
|
{
|
|
struct hashmap_entry entry;
|
|
|
|
if (!map->map.cmpfn)
|
|
oidmap_init(map, 0);
|
|
|
|
hashmap_entry_init(&entry, hash(key));
|
|
return hashmap_remove(&map->map, &entry, key);
|
|
}
|
|
|
|
void *oidmap_put(struct oidmap *map, void *entry)
|
|
{
|
|
struct oidmap_entry *to_put = entry;
|
|
|
|
if (!map->map.cmpfn)
|
|
oidmap_init(map, 0);
|
|
|
|
hashmap_entry_init(&to_put->internal_entry, hash(&to_put->oid));
|
|
return hashmap_put(&map->map, to_put);
|
|
}
|