mirror of
https://github.com/MariaDB/server.git
synced 2025-01-27 17:33:44 +01:00
dc9107df2a
There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index".
27 lines
740 B
C
27 lines
740 B
C
/******************************************************
|
|
Data dictionary global types
|
|
|
|
(c) 1996 Innobase Oy
|
|
|
|
Created 1/8/1996 Heikki Tuuri
|
|
*******************************************************/
|
|
|
|
#ifndef dict0types_h
|
|
#define dict0types_h
|
|
|
|
typedef struct dict_sys_struct dict_sys_t;
|
|
typedef struct dict_col_struct dict_col_t;
|
|
typedef struct dict_field_struct dict_field_t;
|
|
typedef struct dict_index_struct dict_index_t;
|
|
typedef struct dict_table_struct dict_table_t;
|
|
typedef struct dict_foreign_struct dict_foreign_t;
|
|
|
|
/* A cluster object is a table object with the type field set to
|
|
DICT_CLUSTERED */
|
|
|
|
typedef dict_table_t dict_cluster_t;
|
|
|
|
typedef struct ind_node_struct ind_node_t;
|
|
typedef struct tab_node_struct tab_node_t;
|
|
|
|
#endif
|