src/include/access/hio.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * hio.h
   4  *        POSTGRES heap access method input/output definitions.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $PostgreSQL$
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef HIO_H
  15 #define HIO_H
  16
  17 #include "access/htup.h"
  18 #include "utils/relcache.h"
  19 #include "storage/buf.h"
  20
  21
  22 /*
  23  * state for bulk inserts --- private to heapam.c and hio.c
  24  *
  25  * If current_buf isn't InvalidBuffer, then we are holding an extra pin
  26  * on that buffer.
  27  *
  28  * "typedef struct BulkInsertStateData *BulkInsertState" is in heapam.h
  29  */
  30 typedef struct BulkInsertStateData
  31 {
  32         BufferAccessStrategy strategy;          /* our BULKWRITE strategy object */
  33         Buffer          current_buf;    /* current insertion target page */
  34 } BulkInsertStateData;
  35
  36
  37 extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
  38                                          HeapTuple tuple);
  39 extern Buffer RelationGetBufferForTuple(Relation relation, Size len,
  40                                                   Buffer otherBuffer, int options,
  41                                                   struct BulkInsertStateData *bistate);
  42
  43 #endif   /* HIO_H */