Referencia del Archivo src/libpq/include/utils/tqual.h

#include "access/htup.h"
#include "access/xact.h"
#include "storage/buf.h"

Ir al código fuente de este archivo.

Clases
struct	SnapshotData
'defines'
#define	InvalidSnapshot   ((Snapshot) 0x0)
#define	SnapshotNow   ((Snapshot) 0x1)
#define	SnapshotSelf   ((Snapshot) 0x2)
#define	SnapshotAny   ((Snapshot) 0x3)
#define	SnapshotToast   ((Snapshot) 0x4)
#define	HeapTupleSatisfiesVisibility(tuple, snapshot, buffer)
'typedefs'
typedef struct SnapshotData	SnapshotData
typedef SnapshotData *	Snapshot
Enumeraciones
enum	HTSU_Result {   HeapTupleMayBeUpdated, HeapTupleInvisible, HeapTupleSelfUpdated, HeapTupleUpdated,   HeapTupleBeingUpdated }
enum	HTSV_Result {   HEAPTUPLE_DEAD, HEAPTUPLE_LIVE, HEAPTUPLE_RECENTLY_DEAD, HEAPTUPLE_INSERT_IN_PROGRESS,   HEAPTUPLE_DELETE_IN_PROGRESS }
Funciones
bool	HeapTupleSatisfiesItself (HeapTupleHeader tuple, Buffer buffer)
bool	HeapTupleSatisfiesNow (HeapTupleHeader tuple, Buffer buffer)
bool	HeapTupleSatisfiesDirty (HeapTupleHeader tuple, Buffer buffer)
bool	HeapTupleSatisfiesToast (HeapTupleHeader tuple, Buffer buffer)
bool	HeapTupleSatisfiesSnapshot (HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
HTSU_Result	HeapTupleSatisfiesUpdate (HeapTupleHeader tuple, CommandId curcid, Buffer buffer)
HTSV_Result	HeapTupleSatisfiesVacuum (HeapTupleHeader tuple, TransactionId OldestXmin, Buffer buffer)
Snapshot	GetTransactionSnapshot (void)
Snapshot	GetLatestSnapshot (void)
Snapshot	CopySnapshot (Snapshot snapshot)
void	FreeSnapshot (Snapshot snapshot)
void	FreeXactSnapshot (void)
Snapshot	GetSnapshotData (Snapshot snapshot, bool serializable)
Variables
DLLIMPORT Snapshot	SnapshotDirty
DLLIMPORT Snapshot	SerializableSnapshot
DLLIMPORT Snapshot	LatestSnapshot
DLLIMPORT Snapshot	ActiveSnapshot
TransactionId	TransactionXmin
TransactionId	RecentXmin
TransactionId	RecentGlobalXmin

---

Documentación de los 'defines'

#define HeapTupleSatisfiesVisibility	(		tuple,
			snapshot,
			buffer
	)

Valor:

((snapshot) == SnapshotNow ? \
        HeapTupleSatisfiesNow((tuple)->t_data, buffer) \
: \
        ((snapshot) == SnapshotSelf ? \
                HeapTupleSatisfiesItself((tuple)->t_data, buffer) \
        : \
                ((snapshot) == SnapshotAny ? \
                        true \
                : \
                        ((snapshot) == SnapshotToast ? \
                                HeapTupleSatisfiesToast((tuple)->t_data, buffer) \
                        : \
                                ((snapshot) == SnapshotDirty ? \
                                        HeapTupleSatisfiesDirty((tuple)->t_data, buffer) \
                                : \
                                        HeapTupleSatisfiesSnapshot((tuple)->t_data, snapshot, buffer) \
                                ) \
                        ) \
                ) \
        ) \
)

#define InvalidSnapshot   ((Snapshot) 0x0)

#define SnapshotAny   ((Snapshot) 0x3)

#define SnapshotNow   ((Snapshot) 0x1)

#define SnapshotSelf   ((Snapshot) 0x2)

#define SnapshotToast   ((Snapshot) 0x4)

---

Documentación de los 'typedefs'

typedef SnapshotData* Snapshot

typedef struct SnapshotData SnapshotData

---

Documentación de las enumeraciones

enum HTSU_Result

Valores de enumeraciones:

HeapTupleMayBeUpdated
HeapTupleInvisible
HeapTupleSelfUpdated
HeapTupleUpdated
HeapTupleBeingUpdated

enum HTSV_Result

Valores de enumeraciones:

HEAPTUPLE_DEAD
HEAPTUPLE_LIVE
HEAPTUPLE_RECENTLY_DEAD
HEAPTUPLE_INSERT_IN_PROGRESS
HEAPTUPLE_DELETE_IN_PROGRESS

---

Documentación de las funciones

Snapshot CopySnapshot

(

Snapshot

snapshot

)

void FreeSnapshot

(

Snapshot

snapshot

)

void FreeXactSnapshot

(

void

)

Snapshot GetLatestSnapshot

(

void

)

Snapshot GetSnapshotData	(	Snapshot	snapshot,
		bool	serializable
	)

Snapshot GetTransactionSnapshot

(

void

)

bool HeapTupleSatisfiesDirty	(	HeapTupleHeader	tuple,
		Buffer	buffer
	)

bool HeapTupleSatisfiesItself	(	HeapTupleHeader	tuple,
		Buffer	buffer
	)

bool HeapTupleSatisfiesNow	(	HeapTupleHeader	tuple,
		Buffer	buffer
	)

bool HeapTupleSatisfiesSnapshot	(	HeapTupleHeader	tuple,
		Snapshot	snapshot,
		Buffer	buffer
	)

bool HeapTupleSatisfiesToast	(	HeapTupleHeader	tuple,
		Buffer	buffer
	)

HTSU_Result HeapTupleSatisfiesUpdate	(	HeapTupleHeader	tuple,
		CommandId	curcid,
		Buffer	buffer
	)

HTSV_Result HeapTupleSatisfiesVacuum	(	HeapTupleHeader	tuple,
		TransactionId	OldestXmin,
		Buffer	buffer
	)

---

Documentación de las variables

DLLIMPORT Snapshot ActiveSnapshot

DLLIMPORT Snapshot LatestSnapshot

TransactionId RecentGlobalXmin

TransactionId RecentXmin

DLLIMPORT Snapshot SerializableSnapshot

DLLIMPORT Snapshot SnapshotDirty

TransactionId TransactionXmin