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Viewing changes to storage/innobase/include/lock0iter.h

  • Committer: Brian Aker
  • Date: 2008-11-04 15:39:09 UTC
  • mfrom: (575.1.2 devel)
  • Revision ID: brian@tangent.org-20081104153909-c72hn65udxs1ccal
Merge of Monty's work

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storage/innobase/include/lock0iter.h
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#include "lock0types.h"
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typedef struct lock_queue_iterator_struct {
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        lock_t* current_lock;
 
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        const lock_t*   current_lock;
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        /* In case this is a record lock queue (not table lock queue)
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        then bit_no is the record number within the heap in which the
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        record is stored. */
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        ulint   bit_no;
 
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        ulint           bit_no;
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} lock_queue_iterator_t;
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/***********************************************************************
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   bit_no is calculated in this function by using
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   lock_rec_find_set_bit(). There is exactly one bit set in the bitmap
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   of a wait lock. */
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UNIV_INTERN
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void
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lock_queue_iterator_reset(
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/*======================*/
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        lock_queue_iterator_t*  iter,   /* out: iterator */
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        lock_t*                 lock,   /* in: lock to start from */
 
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        const lock_t*           lock,   /* in: lock to start from */
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        ulint                   bit_no);/* in: record number in the
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                                        heap */
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more locks (i.e. the current lock is the first one). The iterator is
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receded (if not-NULL is returned). */
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lock_t*
 
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const lock_t*
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lock_queue_iterator_get_prev(
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/*=========================*/
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                                        /* out: previous lock or NULL */