util/X86MAC64/include/postgresql/server/postmaster/autovacuum.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * autovacuum.h
   4  *        header file for integrated autovacuum daemon
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * src/include/postmaster/autovacuum.h
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef AUTOVACUUM_H
  15 #define AUTOVACUUM_H
  16
  17
  18 /* GUC variables */
  19 extern bool autovacuum_start_daemon;
  20 extern int      autovacuum_max_workers;
  21 extern int      autovacuum_work_mem;
  22 extern int      autovacuum_naptime;
  23 extern int      autovacuum_vac_thresh;
  24 extern double autovacuum_vac_scale;
  25 extern int      autovacuum_anl_thresh;
  26 extern double autovacuum_anl_scale;
  27 extern int      autovacuum_freeze_max_age;
  28 extern int      autovacuum_multixact_freeze_max_age;
  29 extern int      autovacuum_vac_cost_delay;
  30 extern int      autovacuum_vac_cost_limit;
  31
  32 /* autovacuum launcher PID, only valid when worker is shutting down */
  33 extern int      AutovacuumLauncherPid;
  34
  35 extern int      Log_autovacuum_min_duration;
  36
  37 /* Status inquiry functions */
  38 extern bool AutoVacuumingActive(void);
  39 extern bool IsAutoVacuumLauncherProcess(void);
  40 extern bool IsAutoVacuumWorkerProcess(void);
  41
  42 #define IsAnyAutoVacuumProcess() \
  43         (IsAutoVacuumLauncherProcess() || IsAutoVacuumWorkerProcess())
  44
  45 /* Functions to start autovacuum process, called from postmaster */
  46 extern void autovac_init(void);
  47 extern int      StartAutoVacLauncher(void);
  48 extern int      StartAutoVacWorker(void);
  49
  50 /* called from postmaster when a worker could not be forked */
  51 extern void AutoVacWorkerFailed(void);
  52
  53 /* autovacuum cost-delay balancer */
  54 extern void AutoVacuumUpdateDelay(void);
  55
  56 #ifdef EXEC_BACKEND
  57 extern void AutoVacLauncherMain(int argc, char *argv[]) __attribute__((noreturn));
  58 extern void AutoVacWorkerMain(int argc, char *argv[]) __attribute__((noreturn));
  59 extern void AutovacuumWorkerIAm(void);
  60 extern void AutovacuumLauncherIAm(void);
  61 #endif
  62
  63 /* shared memory stuff */
  64 extern Size AutoVacuumShmemSize(void);
  65 extern void AutoVacuumShmemInit(void);
  66
  67 #endif   /* AUTOVACUUM_H */