67 lines
1.9 KiB
C
67 lines
1.9 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) 1996-2010, 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/lock.h"
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/* GUC variables */
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extern bool autovacuum_start_daemon;
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extern int autovacuum_max_workers;
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extern int autovacuum_naptime;
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extern int autovacuum_vac_thresh;
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extern double autovacuum_vac_scale;
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extern int autovacuum_anl_thresh;
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extern double autovacuum_anl_scale;
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extern int autovacuum_freeze_max_age;
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extern int autovacuum_vac_cost_delay;
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extern int autovacuum_vac_cost_limit;
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/* autovacuum launcher PID, only valid when worker is shutting down */
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extern int AutovacuumLauncherPid;
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extern int Log_autovacuum_min_duration;
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/* Status inquiry functions */
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extern bool AutoVacuumingActive(void);
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extern bool IsAutoVacuumLauncherProcess(void);
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extern bool IsAutoVacuumWorkerProcess(void);
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#define IsAnyAutoVacuumProcess() \
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(IsAutoVacuumLauncherProcess() || IsAutoVacuumWorkerProcess())
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/* Functions to start autovacuum process, called from postmaster */
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extern void autovac_init(void);
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extern int StartAutoVacLauncher(void);
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extern int StartAutoVacWorker(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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/* autovacuum cost-delay balancer */
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extern void AutoVacuumUpdateDelay(void);
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#ifdef EXEC_BACKEND
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extern void AutoVacLauncherMain(int argc, char *argv[]);
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extern void AutoVacWorkerMain(int argc, char *argv[]);
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extern void AutovacuumWorkerIAm(void);
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extern void AutovacuumLauncherIAm(void);
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#endif
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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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