#include "storage/itemptr.h"

Include dependency graph for htup.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	HeapTupleData

Macros
#define	FIELDNO_HEAPTUPLEDATA_DATA 3

#define	HEAPTUPLESIZE MAXALIGN(sizeof(HeapTupleData))

#define	HeapTupleIsValid(tuple) PointerIsValid(tuple)

Typedefs
typedef struct HeapTupleHeaderData	HeapTupleHeaderData

typedef HeapTupleHeaderData *	HeapTupleHeader

typedef struct MinimalTupleData	MinimalTupleData

typedef MinimalTupleData *	MinimalTuple

typedef struct HeapTupleData	HeapTupleData

typedef HeapTupleData *	HeapTuple

Functions
CommandId	HeapTupleHeaderGetCmin (HeapTupleHeader tup)

CommandId	HeapTupleHeaderGetCmax (HeapTupleHeader tup)

void	HeapTupleHeaderAdjustCmax (HeapTupleHeader tup, CommandId cmax, bool iscombo)

TransactionId	HeapTupleGetUpdateXid (HeapTupleHeader tuple)

Macro Definition Documentation

◆ FIELDNO_HEAPTUPLEDATA_DATA

#define FIELDNO_HEAPTUPLEDATA_DATA 3

Definition at line 67 of file htup.h.

◆ HeapTupleIsValid

#define HeapTupleIsValid ( tuple ) PointerIsValid(tuple)

Definition at line 78 of file htup.h.

◆ HEAPTUPLESIZE

#define HEAPTUPLESIZE MAXALIGN(sizeof(HeapTupleData))

Definition at line 73 of file htup.h.

Typedef Documentation

◆ HeapTuple

typedef HeapTupleData* HeapTuple

Definition at line 71 of file htup.h.

◆ HeapTupleData

typedef struct HeapTupleData HeapTupleData

◆ HeapTupleHeader

typedef HeapTupleHeaderData* HeapTupleHeader

Definition at line 23 of file htup.h.

◆ HeapTupleHeaderData

typedef struct HeapTupleHeaderData HeapTupleHeaderData

Definition at line 1 of file htup.h.

◆ MinimalTuple

typedef MinimalTupleData* MinimalTuple

Definition at line 27 of file htup.h.

◆ MinimalTupleData

typedef struct MinimalTupleData MinimalTupleData

Definition at line 23 of file htup.h.

Function Documentation

◆ HeapTupleGetUpdateXid()

TransactionId HeapTupleGetUpdateXid ( HeapTupleHeader tuple )

Definition at line 7057 of file heapam.c.

 {
     return MultiXactIdGetUpdateXid(HeapTupleHeaderGetRawXmax(tuple),
                                    tuple->t_infomask);
 }

References HeapTupleHeaderGetRawXmax, MultiXactIdGetUpdateXid(), and HeapTupleHeaderData::t_infomask.

Referenced by check_tuple_visibility(), heap_update(), HeapTupleHeaderIsOnlyLocked(), HeapTupleSatisfiesDirty(), HeapTupleSatisfiesHistoricMVCC(), HeapTupleSatisfiesMVCC(), HeapTupleSatisfiesSelf(), HeapTupleSatisfiesUpdate(), and HeapTupleSatisfiesVacuumHorizon().

◆ HeapTupleHeaderAdjustCmax()

void HeapTupleHeaderAdjustCmax	(	HeapTupleHeader	tup,
		CommandId *	cmax,
		bool *	iscombo
	)

Definition at line 153 of file combocid.c.

 {
     /*
      * If we're marking a tuple deleted that was inserted by (any
      * subtransaction of) our transaction, we need to use a combo command id.
      * Test for HeapTupleHeaderXminCommitted() first, because it's cheaper
      * than a TransactionIdIsCurrentTransactionId call.
      */
     if (!HeapTupleHeaderXminCommitted(tup) &&
         TransactionIdIsCurrentTransactionId(HeapTupleHeaderGetRawXmin(tup)))
     {
         CommandId   cmin = HeapTupleHeaderGetCmin(tup);
  
         *cmax = GetComboCommandId(cmin, *cmax);
         *iscombo = true;
     }
     else
     {
         *iscombo = false;
     }
 }

References GetComboCommandId(), HeapTupleHeaderGetCmin(), HeapTupleHeaderGetRawXmin, HeapTupleHeaderXminCommitted, and TransactionIdIsCurrentTransactionId().

Referenced by heap_delete(), and heap_update().

◆ HeapTupleHeaderGetCmax()

CommandId HeapTupleHeaderGetCmax ( HeapTupleHeader tup )

Definition at line 118 of file combocid.c.

 {
     CommandId   cid = HeapTupleHeaderGetRawCommandId(tup);
  
     Assert(!(tup->t_infomask & HEAP_MOVED));
  
     /*
      * Because GetUpdateXid() performs memory allocations if xmax is a
      * multixact we can't Assert() if we're inside a critical section. This
      * weakens the check, but not using GetCmax() inside one would complicate
      * things too much.
      */
     Assert(CritSectionCount > 0 ||
            TransactionIdIsCurrentTransactionId(HeapTupleHeaderGetUpdateXid(tup)));
  
     if (tup->t_infomask & HEAP_COMBOCID)
         return GetRealCmax(cid);
     else
         return cid;
 }

References Assert, CritSectionCount, GetRealCmax(), HEAP_COMBOCID, HEAP_MOVED, HeapTupleHeaderGetRawCommandId, HeapTupleHeaderGetUpdateXid, HeapTupleHeaderData::t_infomask, and TransactionIdIsCurrentTransactionId().

Referenced by heap_delete(), heap_lock_tuple(), heap_update(), HeapTupleSatisfiesMVCC(), HeapTupleSatisfiesUpdate(), and log_heap_new_cid().

◆ HeapTupleHeaderGetCmin()

CommandId HeapTupleHeaderGetCmin ( HeapTupleHeader tup )

Definition at line 104 of file combocid.c.

 {
     CommandId   cid = HeapTupleHeaderGetRawCommandId(tup);
  
     Assert(!(tup->t_infomask & HEAP_MOVED));
     Assert(TransactionIdIsCurrentTransactionId(HeapTupleHeaderGetXmin(tup)));
  
     if (tup->t_infomask & HEAP_COMBOCID)
         return GetRealCmin(cid);
     else
         return cid;
 }

References Assert, GetRealCmin(), HEAP_COMBOCID, HEAP_MOVED, HeapTupleHeaderGetRawCommandId, HeapTupleHeaderGetXmin, HeapTupleHeaderData::t_infomask, and TransactionIdIsCurrentTransactionId().

Referenced by heapam_tuple_lock(), HeapTupleHeaderAdjustCmax(), HeapTupleSatisfiesMVCC(), HeapTupleSatisfiesUpdate(), and log_heap_new_cid().

Data Structures

Macros

Typedefs

Functions