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repos_util
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libpq_test
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include
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server
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postmaster
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autovacuum.h

autovacuum.h 2.0 KB
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  1. /*-------------------------------------------------------------------------
    2. 

  2.  *
    3. 

  3.  * autovacuum.h
    4. 

  4.  *	  header file for integrated autovacuum daemon
    5. 

  5.  *
    6. 

  6.  *
    7. 

  7.  * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
    8. 

  8.  * Portions Copyright (c) 1994, Regents of the University of California
    9. 

  9.  *
    10. 

  10.  * src/include/postmaster/autovacuum.h
    11. 

  11.  *
    12. 

  12.  *-------------------------------------------------------------------------
    13. 

  13.  */
    14. 

  14. #ifndef AUTOVACUUM_H
    15. 

  15. #define AUTOVACUUM_H
    16. 

  16. 

  17. 

  18. /* GUC variables */
    19. 

  19. extern bool autovacuum_start_daemon;
    20. 

  20. extern int	autovacuum_max_workers;
    21. 

  21. extern int	autovacuum_work_mem;
    22. 

  22. extern int	autovacuum_naptime;
    23. 

  23. extern int	autovacuum_vac_thresh;
    24. 

  24. extern double autovacuum_vac_scale;
    25. 

  25. extern int	autovacuum_anl_thresh;
    26. 

  26. extern double autovacuum_anl_scale;
    27. 

  27. extern int	autovacuum_freeze_max_age;
    28. 

  28. extern int	autovacuum_multixact_freeze_max_age;
    29. 

  29. extern int	autovacuum_vac_cost_delay;
    30. 

  30. extern int	autovacuum_vac_cost_limit;
    31. 

  31. 

  32. /* autovacuum launcher PID, only valid when worker is shutting down */
    33. 

  33. extern int	AutovacuumLauncherPid;
    34. 

  34. 

  35. extern int	Log_autovacuum_min_duration;
    36. 

  36. 

  37. /* Status inquiry functions */
    38. 

  38. extern bool AutoVacuumingActive(void);
    39. 

  39. extern bool IsAutoVacuumLauncherProcess(void);
    40. 

  40. extern bool IsAutoVacuumWorkerProcess(void);
    41. 

  41. 

  42. #define IsAnyAutoVacuumProcess() \
    43. 

  43. 	(IsAutoVacuumLauncherProcess() || IsAutoVacuumWorkerProcess())
    44. 

  44. 

  45. /* Functions to start autovacuum process, called from postmaster */
    46. 

  46. extern void autovac_init(void);
    47. 

  47. extern int	StartAutoVacLauncher(void);
    48. 

  48. extern int	StartAutoVacWorker(void);
    49. 

  49. 

  50. /* called from postmaster when a worker could not be forked */
    51. 

  51. extern void AutoVacWorkerFailed(void);
    52. 

  52. 

  53. /* autovacuum cost-delay balancer */
    54. 

  54. extern void AutoVacuumUpdateDelay(void);
    55. 

  55. 

  56. #ifdef EXEC_BACKEND
    57. 

  57. extern void AutoVacLauncherMain(int argc, char *argv[]) pg_attribute_noreturn();
    58. 

  58. extern void AutoVacWorkerMain(int argc, char *argv[]) pg_attribute_noreturn();
    59. 

  59. extern void AutovacuumWorkerIAm(void);
    60. 

  60. extern void AutovacuumLauncherIAm(void);
    61. 

  61. #endif
    62. 

  62. 

  63. /* shared memory stuff */
    64. 

  64. extern Size AutoVacuumShmemSize(void);
    65. 

  65. extern void AutoVacuumShmemInit(void);
    66. 

  66. 

  67. #endif   /* AUTOVACUUM_H */
    68.