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/*-------------------------------------------------------------------------
*
* gtm_seq.h
*
*
* Portions Copyright (c) 2012-2014, TransLattice, Inc.
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
* Portions Copyright (c) 2010-2012 Postgres-XC Development Group
*
* $PostgreSQL$
*
*-------------------------------------------------------------------------
*/
#ifndef GTM_SEQ_H
#define GTM_SEQ_H
#include "gtm/stringinfo.h"
#include "gtm/gtm_lock.h"
#include "gtm/libpq-be.h"
/* Global sequence related structures */
typedef struct GTM_SeqLastVal
{
char gs_coord_name[SP_NODE_NAME];
int32 gs_coord_procid;
GTM_Sequence gs_last_value;
} GTM_SeqLastVal;
typedef struct GTM_SeqInfo
{
GTM_SequenceKey gs_key;
GTM_SequenceKey gs_oldkey;
GTM_Sequence gs_value;
GTM_Sequence gs_backedUpValue;
GTM_Sequence gs_init_value;
int32 gs_max_lastvals;
int32 gs_lastval_count;
GTM_SeqLastVal *gs_last_values;
GTM_Sequence gs_increment_by;
GTM_Sequence gs_min_value;
GTM_Sequence gs_max_value;
bool gs_cycle;
bool gs_called;
GlobalTransactionId gs_created_gxid;
int32 gs_ref_count;
int32 gs_state;
GTM_RWLock gs_lock;
} GTM_SeqInfo;
#define SEQ_STATE_ACTIVE 1
#define SEQ_STATE_DELETED 2
#define SEQ_IS_ASCENDING(s) ((s)->gs_increment_by > 0)
#define SEQ_IS_CYCLE(s) ((s)->gs_cycle)
#define SEQ_IS_CALLED(s) ((s)->gs_called)
#define SEQ_DEF_MAX_SEQVAL_ASCEND 0x7ffffffffffffffeLL
#define SEQ_DEF_MIN_SEQVAL_ASCEND 0x1
#define SEQ_DEF_MAX_SEQVAL_DESCEND -0x1
#define SEQ_DEF_MIN_SEQVAL_DESCEND -0x7ffffffffffffffeLL
#define SEQ_MAX_REFCOUNT 1024
/* SEQUENCE Management */
void GTM_InitSeqManager(void);
/* sequence commands in gtm/main/gtm_seq.c */
void ProcessSequenceInitCommand(Port *myport, StringInfo message, bool is_backup);
void ProcessSequenceGetCurrentCommand(Port *myport, StringInfo message);
void ProcessSequenceGetNextCommand(Port *myport, StringInfo message, bool is_backup);
void ProcessSequenceSetValCommand(Port *myport, StringInfo message, bool is_backup);
void ProcessSequenceResetCommand(Port *myport, StringInfo message, bool is_backup);
void ProcessSequenceCloseCommand(Port *myport, StringInfo message, bool is_backup);
void ProcessSequenceRenameCommand(Port *myport, StringInfo message, bool is_backup);
void ProcessSequenceAlterCommand(Port *myport, StringInfo message, bool is_backup);
void ProcessSequenceListCommand(Port *myport, StringInfo message);
void decode_seq_key(char* value, GTM_SequenceKey seqkey);
void GTM_SaveSeqInfo(FILE *ctlf);
int GTM_SeqRestore(GTM_SequenceKey seqkey,
GTM_Sequence increment_by,
GTM_Sequence minval,
GTM_Sequence maxval,
GTM_Sequence startval,
GTM_Sequence curval,
int32 state,
bool cycle,
bool called);
void GTM_CleanupSeqSession(char *coord_name, int coord_procid);
bool GTM_NeedSeqRestoreUpdate(GTM_SequenceKey seqkey);
void GTM_WriteRestorePointSeq(FILE *f);
void GTM_SeqRemoveCreated(void *seqinfo);
void GTM_SeqRestoreDropped(void *seqinfo);
void GTM_SeqRemoveDropped(void *seqinfo);
void GTM_SeqRestoreAltered(void *ptr);
void GTM_SeqRemoveAltered(void *seqinfo);
#endif
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