src/include/access/hio.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * hio.h
   4  *        POSTGRES heap access method input/output definitions.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2021, 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/htup.h"
  18 #include "storage/buf.h"
  19 #include "utils/relcache.h"
  20
  21 /*
  22  * state for bulk inserts --- private to heapam.c and hio.c
  23  *
  24  * If current_buf isn't InvalidBuffer, then we are holding an extra pin
  25  * on that buffer.
  26  *
  27  * "typedef struct BulkInsertStateData *BulkInsertState" is in heapam.h
  28  */
  29 typedef struct BulkInsertStateData
  30 {
  31         BufferAccessStrategy strategy;  /* our BULKWRITE strategy object */
  32         Buffer          current_buf;    /* current insertion target page */
  33 } BulkInsertStateData;
  34
  35
  36 extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
  37                                                                  HeapTuple tuple, bool token);
  38 extern Buffer RelationGetBufferForTuple(Relation relation, Size len,
  39                                                                                 Buffer otherBuffer, int options,
  40                                                                                 BulkInsertStateData *bistate,
  41                                                                                 Buffer *vmbuffer, Buffer *vmbuffer_other);
  42
  43 #endif                                                  /* HIO_H */