snapshot.h File Reference

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

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Data Structures
struct	SnapshotData
Defines
#define	InvalidSnapshot   ((Snapshot) NULL)
Typedefs
typedef struct SnapshotData *	Snapshot
typedef bool(*	SnapshotSatisfiesFunc )(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)
typedef struct SnapshotData	SnapshotData
Enumerations
enum	HTSU_Result {   HeapTupleMayBeUpdated, HeapTupleInvisible, HeapTupleSelfUpdated, HeapTupleUpdated,   HeapTupleBeingUpdated }

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Define Documentation

#define InvalidSnapshot   ((Snapshot) NULL)

Definition at line 22 of file snapshot.h.

Referenced by _SPI_execute_plan(), BeginCopy(), CopySnapshot(), exec_bind_message(), exec_simple_query(), ExecCreateTableAs(), ExplainOnePlan(), heap_delete(), heap_update(), PortalStart(), postquel_start(), ProcessQuery(), PushActiveSnapshot(), refresh_matview_datafill(), RegisterSnapshot(), RegisterSnapshotOnOwner(), RI_Initial_Check(), simple_heap_delete(), simple_heap_update(), SPI_execute(), SPI_execute_plan(), SPI_execute_plan_with_paramlist(), and SPI_execute_with_args().

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Typedef Documentation

typedef struct SnapshotData* Snapshot

Definition at line 20 of file snapshot.h.

typedef struct SnapshotData SnapshotData

typedef bool(* SnapshotSatisfiesFunc)(HeapTupleHeader tuple, Snapshot snapshot, Buffer buffer)

Definition at line 30 of file snapshot.h.

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Enumeration Type Documentation

enum HTSU_Result

Enumerator:

HeapTupleMayBeUpdated
HeapTupleInvisible
HeapTupleSelfUpdated
HeapTupleUpdated
HeapTupleBeingUpdated

Definition at line 71 of file snapshot.h.

{
    HeapTupleMayBeUpdated,
    HeapTupleInvisible,
    HeapTupleSelfUpdated,
    HeapTupleUpdated,
    HeapTupleBeingUpdated
} HTSU_Result;