diff options
Diffstat (limited to 'mysys/hash.c')
| -rw-r--r-- | mysys/hash.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/mysys/hash.c b/mysys/hash.c index 63933abb085..367ac8713dd 100644 --- a/mysys/hash.c +++ b/mysys/hash.c @@ -214,6 +214,20 @@ uchar* my_hash_search(const HASH *hash, const uchar *key, size_t length) return my_hash_first(hash, key, length, &state); } +uchar* my_hash_search_using_hash_value(const HASH *hash, + uint hash_value, + const uchar *key, + size_t length) +{ + HASH_SEARCH_STATE state; + return my_hash_first_from_hash_value(hash, hash_value, + key, length, &state); +} + +uint my_calc_hash(const HASH *hash, const uchar *key, size_t length) +{ + return calc_hash(hash, key, length ? length : hash->key_length); +} /* Search after a record based on a key @@ -224,14 +238,25 @@ uchar* my_hash_search(const HASH *hash, const uchar *key, size_t length) uchar* my_hash_first(const HASH *hash, const uchar *key, size_t length, HASH_SEARCH_STATE *current_record) { + return my_hash_first_from_hash_value(hash, + calc_hash(hash, key, length ? length : hash->key_length), + key, length, current_record); +} + +uchar* my_hash_first_from_hash_value(const HASH *hash, + uint hash_value, + const uchar *key, + size_t length, + HASH_SEARCH_STATE *current_record) +{ HASH_LINK *pos; uint flag,idx; - DBUG_ENTER("my_hash_first"); + DBUG_ENTER("my_hash_first_from_hash_value"); flag=1; if (hash->records) { - idx= my_hash_mask(calc_hash(hash, key, length ? length : hash->key_length), + idx= my_hash_mask(hash_value, hash->blength, hash->records); do { |