File size: 2,257 Bytes
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*
* autovacuum.h
* header file for integrated autovacuum daemon
*
*
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/postmaster/autovacuum.h
*
*-------------------------------------------------------------------------
*/
#ifndef AUTOVACUUM_H
#define AUTOVACUUM_H
#include "storage/block.h"
/*
* Other processes can request specific work from autovacuum, identified by
* AutoVacuumWorkItem elements.
*/
typedef enum
{
AVW_BRINSummarizeRange,
} AutoVacuumWorkItemType;
/* GUC variables */
extern PGDLLIMPORT bool autovacuum_start_daemon;
extern PGDLLIMPORT int autovacuum_max_workers;
extern PGDLLIMPORT int autovacuum_work_mem;
extern PGDLLIMPORT int autovacuum_naptime;
extern PGDLLIMPORT int autovacuum_vac_thresh;
extern PGDLLIMPORT double autovacuum_vac_scale;
extern PGDLLIMPORT int autovacuum_vac_ins_thresh;
extern PGDLLIMPORT double autovacuum_vac_ins_scale;
extern PGDLLIMPORT int autovacuum_anl_thresh;
extern PGDLLIMPORT double autovacuum_anl_scale;
extern PGDLLIMPORT int autovacuum_freeze_max_age;
extern PGDLLIMPORT int autovacuum_multixact_freeze_max_age;
extern PGDLLIMPORT double autovacuum_vac_cost_delay;
extern PGDLLIMPORT int autovacuum_vac_cost_limit;
/* autovacuum launcher PID, only valid when worker is shutting down */
extern PGDLLIMPORT int AutovacuumLauncherPid;
extern PGDLLIMPORT int Log_autovacuum_min_duration;
/* Status inquiry functions */
extern bool AutoVacuumingActive(void);
/* called from postmaster at server startup */
extern void autovac_init(void);
/* called from postmaster when a worker could not be forked */
extern void AutoVacWorkerFailed(void);
extern void AutoVacLauncherMain(char *startup_data, size_t startup_data_len) pg_attribute_noreturn();
extern void AutoVacWorkerMain(char *startup_data, size_t startup_data_len) pg_attribute_noreturn();
extern bool AutoVacuumRequestWork(AutoVacuumWorkItemType type,
Oid relationId, BlockNumber blkno);
/* shared memory stuff */
extern Size AutoVacuumShmemSize(void);
extern void AutoVacuumShmemInit(void);
#endif /* AUTOVACUUM_H */
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