mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 20:12:31 +01:00
2662b59306
Docs/manual.texi: Added Innobase documentation configure.in: Incremented version include/my_base.h: Added option for Innobase myisam/mi_check.c: cleanup mysql-test/t/bdb.test: cleanup mysql-test/t/innobase.test: Extended with new tests from bdb.test mysql-test/t/merge.test: Added test of SHOW create mysys/my_init.c: Fix for UNIXWARE 7 scripts/mysql_install_db.sh: Always write how to start mysqld scripts/safe_mysqld.sh: Fixed type sql/ha_innobase.cc: Update to new version sql/ha_innobase.h: Update to new version sql/handler.h: Added 'update_table_comment()' and 'append_create_info()' sql/sql_delete.cc: Fixes for Innobase sql/sql_select.cc: Fixes for Innobase sql/sql_show.cc: Append create information (for MERGE tables) sql/sql_update.cc: Fixes for Innobase
65 lines
1.5 KiB
Text
65 lines
1.5 KiB
Text
/************************************************************************
|
|
The index tree adaptive search
|
|
|
|
(c) 1996 Innobase Oy
|
|
|
|
Created 2/17/1996 Heikki Tuuri
|
|
*************************************************************************/
|
|
|
|
#include "dict0mem.h"
|
|
#include "btr0cur.h"
|
|
#include "buf0buf.h"
|
|
|
|
/*************************************************************************
|
|
Updates the search info. */
|
|
|
|
void
|
|
btr_search_info_update_slow(
|
|
/*========================*/
|
|
btr_search_t* info, /* in: search info */
|
|
btr_cur_t* cursor);/* in: cursor which was just positioned */
|
|
|
|
/************************************************************************
|
|
Returns search info for an index. */
|
|
UNIV_INLINE
|
|
btr_search_t*
|
|
btr_search_get_info(
|
|
/*================*/
|
|
/* out: search info; search mutex reserved */
|
|
dict_index_t* index) /* in: index */
|
|
{
|
|
ut_ad(index);
|
|
|
|
return(index->search_info);
|
|
}
|
|
|
|
/*************************************************************************
|
|
Updates the search info. */
|
|
UNIV_INLINE
|
|
void
|
|
btr_search_info_update(
|
|
/*===================*/
|
|
dict_index_t* index, /* in: index of the cursor */
|
|
btr_cur_t* cursor) /* in: cursor which was just positioned */
|
|
{
|
|
btr_search_t* info;
|
|
|
|
ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED)
|
|
&& !rw_lock_own(&btr_search_latch, RW_LOCK_EX));
|
|
|
|
info = btr_search_get_info(index);
|
|
|
|
info->hash_analysis++;
|
|
|
|
if (info->hash_analysis < BTR_SEARCH_HASH_ANALYSIS) {
|
|
|
|
/* Do nothing */
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
ut_ad(cursor->flag != BTR_CUR_HASH);
|
|
|
|
btr_search_info_update_slow(info, cursor);
|
|
}
|