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Viewing changes to storage/innobase/lock/lock0iter.c

  • Committer: Monty Taylor
  • Date: 2009-08-12 06:25:19 UTC
  • mto: (1114.1.1 innodb-plugin-merge)
  • mto: This revision was merged to the branch mainline in revision 1183.
  • Revision ID: mordred@inaugust.com-20090812062519-cij02mrrunvnxblt
Tags: innodb-plugin-1.0.4
InnoDB Plugin 1.0.4

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storage/innobase/lock/lock0iter.c
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*****************************************************************************/
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/******************************************************
 
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/**************************************************//**
 
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@file lock/lock0iter.c
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Lock queue iterator. Can iterate over table and record
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lock queues.
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# include "srv0srv.h" /* kernel_mutex */
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#endif /* UNIV_DEBUG */
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/***********************************************************************
 
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/*******************************************************************//**
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Initialize lock queue iterator so that it starts to iterate from
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"lock". bit_no specifies the record number within the heap where the
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record is stored. It can be undefined (ULINT_UNDEFINED) in two cases:
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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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        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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        lock_queue_iterator_t*  iter,   /*!< out: iterator */
 
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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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{
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        ut_ad(mutex_own(&kernel_mutex));
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        }
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}
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/***********************************************************************
 
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/*******************************************************************//**
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Gets the previous lock in the lock queue, returns NULL if there are no
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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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receded (if not-NULL is returned).
 
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@return previous lock or NULL */
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UNIV_INTERN
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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 */
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        lock_queue_iterator_t*  iter)   /* in/out: iterator */
 
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        lock_queue_iterator_t*  iter)   /*!< in/out: iterator */
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{
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        const lock_t*   prev_lock;
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