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Viewing changes to storage/innobase/include/row0undo.h

  • Committer: Brian Aker
  • Date: 2008-10-28 08:36:02 UTC
  • mfrom: (520.4.13 merge-innodb-plugin)
  • Revision ID: brian@tangent.org-20081028083602-0p3zzlhlxr5q2sqo
Merging Monty's work

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storage/innobase/include/row0undo.h
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/************************************************************************
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Creates a row undo node to a query graph. */
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UNIV_INTERN
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undo_node_t*
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row_undo_node_create(
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/*=================*/
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The pcur in node is used in the search. If found, stores the row to node,
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and stores the position of pcur, and detaches it. The pcur must be closed
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by the caller in any case. */
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UNIV_INTERN
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ibool
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row_undo_search_clust_to_pcur(
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/*==========================*/
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/***************************************************************
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Undoes a row operation in a table. This is a high-level function used
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in SQL execution graphs. */
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UNIV_INTERN
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que_thr_t*
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row_undo_step(
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/*==========*/
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        dtuple_t*       ref;    /* row reference to the next row to handle */
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        dtuple_t*       row;    /* a copy (also fields copied to heap) of the
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                                row to handle */
 
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        row_ext_t*      ext;    /* NULL, or prefixes of the externally
 
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                                stored columns of the row */
 
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        dtuple_t*       undo_row;/* NULL, or the row after undo */
 
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        row_ext_t*      undo_ext;/* NULL, or prefixes of the externally
 
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                                stored columns of undo_row */
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        dict_index_t*   index;  /* the next index whose record should be
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                                handled */
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        mem_heap_t*     heap;   /* memory heap used as auxiliary storage for