WL#5137, Remove hash calculation from LOCK_open in open_table

1 files changed, 11 insertions, 0 deletions

diff --git a/include/hash.h b/include/hash.h
index d870e17c341..515c764214d 100644
--- a/include/hash.h
+++ b/include/hash.h
@@ -30,6 +30,7 @@ extern "C" {
 /* flags for hash_init */
 #define HASH_UNIQUE     1       /* hash_insert fails on duplicate key */
 
+typedef uint my_hash_value_type;
 typedef uchar *(*my_hash_get_key)(const uchar *,size_t*,my_bool);
 typedef void (*my_hash_free_key)(void *);
 
@@ -60,8 +61,18 @@ void my_hash_free(HASH *tree);
 void my_hash_reset(HASH *hash);
 uchar *my_hash_element(HASH *hash, ulong idx);
 uchar *my_hash_search(const HASH *info, const uchar *key, size_t length);
+uchar *my_hash_search_using_hash_value(const HASH *info,
+                                       my_hash_value_type hash_value,
+                                       const uchar *key, size_t length);
+my_hash_value_type my_calc_hash(const HASH *info,
+                                const uchar *key, size_t length);
 uchar *my_hash_first(const HASH *info, const uchar *key, size_t length,
                      HASH_SEARCH_STATE *state);
+uchar *my_hash_first_from_hash_value(const HASH *info,
+                                     my_hash_value_type hash_value,
+                                     const uchar *key,
+                                     size_t length,
+                                     HASH_SEARCH_STATE *state);
 uchar *my_hash_next(const HASH *info, const uchar *key, size_t length,
                     HASH_SEARCH_STATE *state);
 my_bool my_hash_insert(HASH *info, const uchar *data);