1996-08-27 23:50:29 +02:00
|
|
|
/*-------------------------------------------------------------------------
|
|
|
|
|
*
|
|
|
|
|
* xact.h--
|
|
|
|
|
* postgres transaction system header
|
|
|
|
|
*
|
|
|
|
|
*
|
|
|
|
|
* Copyright (c) 1994, Regents of the University of California
|
|
|
|
|
*
|
1996-11-05 08:15:58 +01:00
|
|
|
* $Id: xact.h,v 1.3 1996/11/05 07:15:58 scrappy Exp $
|
1996-08-27 23:50:29 +02:00
|
|
|
*
|
|
|
|
|
*-------------------------------------------------------------------------
|
|
|
|
|
*/
|
|
|
|
|
#ifndef XACT_H
|
|
|
|
|
#define XACT_H
|
|
|
|
|
|
1996-11-05 08:15:58 +01:00
|
|
|
#include <utils/nabstime.h>
|
1996-08-27 23:50:29 +02:00
|
|
|
|
|
|
|
|
/* ----------------
|
|
|
|
|
* transaction state structure
|
|
|
|
|
* ----------------
|
|
|
|
|
*/
|
|
|
|
|
typedef struct TransactionStateData {
|
|
|
|
|
TransactionId transactionIdData;
|
|
|
|
|
CommandId commandId;
|
|
|
|
|
AbsoluteTime startTime;
|
|
|
|
|
int state;
|
|
|
|
|
int blockState;
|
|
|
|
|
} TransactionStateData;
|
|
|
|
|
|
|
|
|
|
/* ----------------
|
|
|
|
|
* transaction states
|
|
|
|
|
* ----------------
|
|
|
|
|
*/
|
|
|
|
|
#define TRANS_DEFAULT 0
|
|
|
|
|
#define TRANS_START 1
|
|
|
|
|
#define TRANS_INPROGRESS 2
|
|
|
|
|
#define TRANS_COMMIT 3
|
|
|
|
|
#define TRANS_ABORT 4
|
|
|
|
|
#define TRANS_DISABLED 5
|
|
|
|
|
|
|
|
|
|
/* ----------------
|
|
|
|
|
* transaction block states
|
|
|
|
|
* ----------------
|
|
|
|
|
*/
|
|
|
|
|
#define TBLOCK_DEFAULT 0
|
|
|
|
|
#define TBLOCK_BEGIN 1
|
|
|
|
|
#define TBLOCK_INPROGRESS 2
|
|
|
|
|
#define TBLOCK_END 3
|
|
|
|
|
#define TBLOCK_ABORT 4
|
|
|
|
|
#define TBLOCK_ENDABORT 5
|
|
|
|
|
|
|
|
|
|
typedef TransactionStateData *TransactionState;
|
|
|
|
|
|
|
|
|
|
/* ----------------
|
|
|
|
|
* extern definitions
|
|
|
|
|
* ----------------
|
|
|
|
|
*/
|
|
|
|
|
extern int TransactionFlushEnabled();
|
|
|
|
|
extern void SetTransactionFlushEnabled(bool state);
|
|
|
|
|
|
|
|
|
|
extern bool IsTransactionState(void);
|
|
|
|
|
extern bool IsAbortedTransactionBlockState(void);
|
|
|
|
|
extern void OverrideTransactionSystem(bool flag);
|
|
|
|
|
extern TransactionId GetCurrentTransactionId(void);
|
|
|
|
|
extern CommandId GetCurrentCommandId(void);
|
|
|
|
|
extern AbsoluteTime GetCurrentTransactionStartTime(void);
|
|
|
|
|
extern bool TransactionIdIsCurrentTransactionId(TransactionId xid);
|
|
|
|
|
extern bool CommandIdIsCurrentCommandId(CommandId cid);
|
|
|
|
|
extern void ClearCommandIdCounterOverflowFlag(void);
|
|
|
|
|
extern void CommandCounterIncrement(void);
|
|
|
|
|
extern void InitializeTransactionSystem(void);
|
|
|
|
|
extern void AtStart_Cache(void);
|
|
|
|
|
extern void AtStart_Locks(void);
|
|
|
|
|
extern void AtStart_Memory(void);
|
|
|
|
|
extern void RecordTransactionCommit(void);
|
|
|
|
|
extern void AtCommit_Cache(void);
|
|
|
|
|
extern void AtCommit_Locks(void);
|
|
|
|
|
extern void AtCommit_Memory(void);
|
|
|
|
|
extern void RecordTransactionAbort(void);
|
|
|
|
|
extern void AtAbort_Cache(void);
|
|
|
|
|
extern void AtAbort_Locks(void);
|
|
|
|
|
extern void AtAbort_Memory(void);
|
|
|
|
|
extern void StartTransaction(void);
|
|
|
|
|
extern bool CurrentXactInProgress(void);
|
|
|
|
|
extern void CommitTransaction(void);
|
|
|
|
|
extern void AbortTransaction(void);
|
|
|
|
|
extern void StartTransactionCommand(void);
|
|
|
|
|
extern void CommitTransactionCommand(void);
|
|
|
|
|
extern void AbortCurrentTransaction(void);
|
|
|
|
|
extern void BeginTransactionBlock(void);
|
|
|
|
|
extern void EndTransactionBlock(void);
|
|
|
|
|
extern void AbortTransactionBlock(void);
|
|
|
|
|
extern bool IsTransactionBlock();
|
|
|
|
|
extern void UserAbortTransactionBlock();
|
|
|
|
|
|
|
|
|
|
extern TransactionId DisabledTransactionId;
|
|
|
|
|
|
|
|
|
|
/* defined in xid.c */
|
|
|
|
|
extern bool TransactionIdIsValid(TransactionId transactionId);
|
|
|
|
|
extern void StoreInvalidTransactionId(TransactionId *destination);
|
|
|
|
|
extern void TransactionIdStore(TransactionId transactionId,
|
|
|
|
|
TransactionId *destination);
|
|
|
|
|
extern bool TransactionIdEquals(TransactionId id1, TransactionId id2);
|
|
|
|
|
extern bool TransactionIdIsLessThan(TransactionId id1, TransactionId id2);
|
|
|
|
|
extern void TransactionIdIncrement(TransactionId *transactionId);
|
|
|
|
|
extern void TransactionIdAdd(TransactionId *xid, int value);
|
|
|
|
|
|
|
|
|
|
#endif /* XACT_H */
|
