diff options
Diffstat (limited to 'storage/xtradb/include/ut0rbt.h')
| -rw-r--r-- | storage/xtradb/include/ut0rbt.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/storage/xtradb/include/ut0rbt.h b/storage/xtradb/include/ut0rbt.h index e26b637ae13..cd9df1c1a3d 100644 --- a/storage/xtradb/include/ut0rbt.h +++ b/storage/xtradb/include/ut0rbt.h @@ -116,6 +116,10 @@ struct ib_rbt_bound_struct { /* Compare a key with the node value (t is tree, k is key, n is node)*/ #define rbt_compare(t, k, n) (t->compare(k, n->value)) +/* Node size. FIXME: name might clash, but currently it does not, so for easier + maintenance do not rename it for now. */ +#define SIZEOF_NODE(t) ((sizeof(ib_rbt_node_t) + t->sizeof_value) - 1) + /**********************************************************************//** Free an instance of a red black tree */ UNIV_INTERN @@ -187,6 +191,17 @@ rbt_add_node( ib_rbt_bound_t* parent, /*!< in: parent */ const void* value); /*!< in: this value is copied to the node */ +/****************************************************************//** +Add a new caller-provided node to tree at the specified position. +The node must have its key fields initialized correctly. +@return added node */ +UNIV_INTERN +const ib_rbt_node_t* +rbt_add_preallocated_node( +/*======================*/ + ib_rbt_t* tree, /*!< in: rb tree */ + ib_rbt_bound_t* parent, /*!< in: parent */ + ib_rbt_node_t* node); /*!< in: node */ /**********************************************************************//** Return the left most data node in the tree @return left most node */ @@ -273,6 +288,13 @@ void rbt_clear( /*======*/ ib_rbt_t* tree); /*!< in: rb tree */ +/****************************************************************//** +Clear the tree without deleting and freeing its nodes. */ +UNIV_INTERN +void +rbt_reset( +/*======*/ + ib_rbt_t* tree); /*!< in: rb tree */ /**********************************************************************//** Merge the node from dst into src. Return the number of nodes merged. @return no. of recs merged */ |