granicus.if.org Git - postgresql/blob - src/include/access/hio.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * hio.h
   4  *        POSTGRES heap access method input/output definitions.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * src/include/access/hio.h
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef HIO_H
  15 #define HIO_H
  16
  17 #include "access/heapam.h"
  18 #include "access/htup.h"
  19 #include "utils/relcache.h"
  20 #include "storage/buf.h"
  21
  22
  23 /*
  24  * state for bulk inserts --- private to heapam.c and hio.c
  25  *
  26  * If current_buf isn't InvalidBuffer, then we are holding an extra pin
  27  * on that buffer.
  28  *
  29  * "typedef struct BulkInsertStateData *BulkInsertState" is in heapam.h
  30  */
  31 typedef struct BulkInsertStateData
  32 {
  33         BufferAccessStrategy strategy;  /* our BULKWRITE strategy object */
  34         Buffer          current_buf;    /* current insertion target page */
  35 }                       BulkInsertStateData;
  36
  37
  38 extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
  39                                          HeapTuple tuple, bool token);
  40 extern Buffer RelationGetBufferForTuple(Relation relation, Size len,
  41                                                   Buffer otherBuffer, int options,
  42                                                   BulkInsertState bistate,
  43                                                   Buffer *vmbuffer, Buffer *vmbuffer_other);
  44
  45 #endif                                                  /* HIO_H */