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