PostgreSQL Source Code  git master
hio.h File Reference
#include "access/htup.h"
#include "storage/buf.h"
#include "utils/relcache.h"
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Data Structures

struct  BulkInsertStateData


typedef struct BulkInsertStateData BulkInsertStateData


void RelationPutHeapTuple (Relation relation, Buffer buffer, HeapTuple tuple, bool token)
Buffer RelationGetBufferForTuple (Relation relation, Size len, Buffer otherBuffer, int options, BulkInsertStateData *bistate, Buffer *vmbuffer, Buffer *vmbuffer_other)

Typedef Documentation

◆ BulkInsertStateData

Function Documentation

◆ RelationGetBufferForTuple()

Buffer RelationGetBufferForTuple ( Relation  relation,
Size  len,
Buffer  otherBuffer,
int  options,
BulkInsertStateData bistate,
Buffer vmbuffer,
Buffer vmbuffer_other 

◆ RelationPutHeapTuple()

void RelationPutHeapTuple ( Relation  relation,
Buffer  buffer,
HeapTuple  tuple,
bool  token 

Definition at line 36 of file hio.c.

References Assert, BufferGetBlockNumber(), BufferGetPage, elog, HEAP_KEYS_UPDATED, HEAP_XMAX_COMMITTED, HEAP_XMAX_IS_MULTI, HEAP_XMAX_LOCK_ONLY, HeapTupleHeaderIsSpeculative, InvalidOffsetNumber, ItemPointerSet, PageAddItem, PageGetItem, PageGetItemId, PANIC, HeapTupleHeaderData::t_ctid, HeapTupleData::t_data, HeapTupleHeaderData::t_infomask, HeapTupleHeaderData::t_infomask2, HeapTupleData::t_len, and HeapTupleData::t_self.

Referenced by heap_insert(), heap_multi_insert(), and heap_update().

40 {
41  Page pageHeader;
42  OffsetNumber offnum;
44  /*
45  * A tuple that's being inserted speculatively should already have its
46  * token set.
47  */
48  Assert(!token || HeapTupleHeaderIsSpeculative(tuple->t_data));
50  /*
51  * Do not allow tuples with invalid combinations of hint bits to be placed
52  * on a page. These combinations are detected as corruption by the
53  * contrib/amcheck logic, so if you disable one or both of these
54  * assertions, make corresponding changes there.
55  */
57  (tuple->t_data->t_infomask2 & HEAP_KEYS_UPDATED)));
59  (tuple->t_data->t_infomask & HEAP_XMAX_IS_MULTI)));
61  /* Add the tuple to the page */
62  pageHeader = BufferGetPage(buffer);
64  offnum = PageAddItem(pageHeader, (Item) tuple->t_data,
65  tuple->t_len, InvalidOffsetNumber, false, true);
67  if (offnum == InvalidOffsetNumber)
68  elog(PANIC, "failed to add tuple to page");
70  /* Update tuple->t_self to the actual position where it was stored */
71  ItemPointerSet(&(tuple->t_self), BufferGetBlockNumber(buffer), offnum);
73  /*
74  * Insert the correct position into CTID of the stored tuple, too (unless
75  * this is a speculative insertion, in which case the token is held in
76  * CTID field instead)
77  */
78  if (!token)
79  {
80  ItemId itemId = PageGetItemId(pageHeader, offnum);
81  HeapTupleHeader item = (HeapTupleHeader) PageGetItem(pageHeader, itemId);
83  item->t_ctid = tuple->t_self;
84  }
85 }
Definition: htup_details.h:196
HeapTupleHeaderData * HeapTupleHeader
Definition: htup.h:23
Pointer Item
Definition: item.h:17
#define HeapTupleHeaderIsSpeculative(tup)
Definition: htup_details.h:429
#define PageAddItem(page, item, size, offsetNumber, overwrite, is_heap)
Definition: bufpage.h:416
Definition: htup_details.h:206
#define PANIC
Definition: elog.h:53
uint16 OffsetNumber
Definition: off.h:24
HeapTupleHeader t_data
Definition: htup.h:68
ItemPointerData t_ctid
Definition: htup_details.h:160
ItemPointerData t_self
Definition: htup.h:65
uint32 t_len
Definition: htup.h:64
#define BufferGetPage(buffer)
Definition: bufmgr.h:169
#define PageGetItemId(page, offsetNumber)
Definition: bufpage.h:235
Definition: htup_details.h:278
Definition: htup_details.h:208
#define InvalidOffsetNumber
Definition: off.h:26
#define Assert(condition)
Definition: c.h:800
BlockNumber BufferGetBlockNumber(Buffer buffer)
Definition: bufmgr.c:2663
#define elog(elevel,...)
Definition: elog.h:228
#define PageGetItem(page, itemId)
Definition: bufpage.h:340
Pointer Page
Definition: bufpage.h:78
#define ItemPointerSet(pointer, blockNumber, offNum)
Definition: itemptr.h:127