src/include/access/rewriteheap.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * rewriteheap.h
   4  *        Declarations for heap rewrite support functions
   5  *
   6  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   7  * Portions Copyright (c) 1994-5, Regents of the University of California
   8  *
   9  * $PostgreSQL$
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13 #ifndef REWRITE_HEAP_H
  14 #define REWRITE_HEAP_H
  15
  16 #include "access/htup.h"
  17 #include "utils/relcache.h"
  18
  19 /* struct definition is private to rewriteheap.c */
  20 typedef struct RewriteStateData *RewriteState;
  21
  22 extern RewriteState begin_heap_rewrite(Relation NewHeap,
  23                                    TransactionId OldestXmin, TransactionId FreezeXid,
  24                                    bool use_wal);
  25 extern void end_heap_rewrite(RewriteState state);
  26 extern void rewrite_heap_tuple(RewriteState state, HeapTuple oldTuple,
  27                                    HeapTuple newTuple);
  28 extern void rewrite_heap_dead_tuple(RewriteState state, HeapTuple oldTuple);
  29
  30 #endif   /* REWRITE_HEAP_H */