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Viewing changes to storage/innobase/include/btr0sea.ic

  • Committer: Monty Taylor
  • Date: 2008-10-27 23:19:48 UTC
  • mto: (520.4.12 merge-innodb-plugin)
  • mto: This revision was merged to the branch mainline in revision 563.
  • Revision ID: monty@inaugust.com-20081027231948-3kl6ss04plbakqcr
Split some more things out of common_includes.h.

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storage/innobase/include/btr0sea.ic
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/************************************************************************
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The index tree adaptive search
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(c) 1996 Innobase Oy
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Created 2/17/1996 Heikki Tuuri
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*************************************************************************/
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#include "dict0mem.h"
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#include "btr0cur.h"
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#include "buf0buf.h"
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/*************************************************************************
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Updates the search info. */
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UNIV_INTERN
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void
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btr_search_info_update_slow(
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/*========================*/
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        btr_search_t*   info,   /* in/out: search info */
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        btr_cur_t*      cursor);/* in: cursor which was just positioned */
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/************************************************************************
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Returns search info for an index. */
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UNIV_INLINE
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btr_search_t*
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btr_search_get_info(
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/*================*/
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                                /* out: search info; search mutex reserved */
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        dict_index_t*   index)  /* in: index */
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{
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        ut_ad(index);
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        return(index->search_info);
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}
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/*************************************************************************
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Updates the search info. */
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UNIV_INLINE
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void
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btr_search_info_update(
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/*===================*/
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        dict_index_t*   index,  /* in: index of the cursor */
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        btr_cur_t*      cursor) /* in: cursor which was just positioned */
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{
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        btr_search_t*   info;
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#ifdef UNIV_SYNC_DEBUG
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        ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_SHARED));
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        ut_ad(!rw_lock_own(&btr_search_latch, RW_LOCK_EX));
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#endif /* UNIV_SYNC_DEBUG */
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        info = btr_search_get_info(index);
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        info->hash_analysis++;
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        if (info->hash_analysis < BTR_SEARCH_HASH_ANALYSIS) {
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                /* Do nothing */
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                return;
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        }
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        ut_ad(cursor->flag != BTR_CUR_HASH);
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        btr_search_info_update_slow(info, cursor);
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}