granicus.if.org Git - postgresql/blob - src/backend/utils/init/globals.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * globals.c
   4  *        global variable declarations
   5  *
   6  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
   7  * Portions Copyright (c) 1994, Regents of the University of California
   8  *
   9  *
  10  * IDENTIFICATION
  11  *        $PostgreSQL: pgsql/src/backend/utils/init/globals.c,v 1.84 2004/02/10 03:42:45 tgl Exp $
  12  *
  13  * NOTES
  14  *        Globals used all over the place should be declared here and not
  15  *        in other modules.
  16  *
  17  *-------------------------------------------------------------------------
  18  */
  19 #include "postgres.h"
  20
  21 #include "libpq/pqcomm.h"
  22 #include "miscadmin.h"
  23 #include "storage/backendid.h"
  24
  25
  26 ProtocolVersion FrontendProtocol = PG_PROTOCOL_LATEST;
  27
  28 volatile bool InterruptPending = false;
  29 volatile bool QueryCancelPending = false;
  30 volatile bool ProcDiePending = false;
  31 volatile bool ImmediateInterruptOK = false;
  32 volatile uint32 InterruptHoldoffCount = 0;
  33 volatile uint32 CritSectionCount = 0;
  34
  35 int                     MyProcPid;
  36 struct Port *MyProcPort;
  37 long            MyCancelKey;
  38
  39 char       *DataDir = NULL;
  40
  41  /*
  42   * The PGDATA directory user says to use, or defaults to via environment
  43   * variable.  NULL if no option given and no environment variable set
  44   */
  45
  46 char            OutputFileName[MAXPGPATH];
  47
  48 char            pg_pathname[MAXPGPATH];         /* full path to postgres
  49                                                                                  * executable */
  50
  51 BackendId       MyBackendId;
  52
  53 char       *DatabasePath = NULL;
  54 Oid                     MyDatabaseId = InvalidOid;
  55
  56 pid_t           PostmasterPid = 0;
  57
  58 /*
  59  * IsPostmasterEnvironment is true in a postmaster process and any postmaster
  60  * child process; it is false in a standalone process (bootstrap or
  61  * standalone backend).  IsUnderPostmaster is true in postmaster child
  62  * processes.  Note that "child process" includes all children, not only
  63  * regular backends.  These should be set correctly as early as possible
  64  * in the execution of a process, so that error handling will do the right
  65  * things if an error should occur during process initialization.
  66  *
  67  * These are initialized for the bootstrap/standalone case.
  68  */
  69 bool            IsPostmasterEnvironment = false;
  70 bool            IsUnderPostmaster = false;
  71
  72 bool            ExitOnAnyError = false;
  73
  74 int                     DateStyle = USE_ISO_DATES;
  75 int                     DateOrder = DATEORDER_MDY;
  76 bool            HasCTZSet = false;
  77 int                     CTimeZone = 0;
  78
  79 bool            enableFsync = true;
  80 bool            allowSystemTableMods = false;
  81 int                     work_mem = 1024;
  82 int                     maintenance_work_mem = 16384;
  83 int                     NBuffers = 1000;
  84
  85 int                     VacuumCostPageHit = 1;                  /* GUC parameters for vacuum */
  86 int                     VacuumCostPageMiss = 10;
  87 int                     VacuumCostPageDirty = 20;
  88 int                     VacuumCostLimit = 200;
  89 int                     VacuumCostNaptime = 0;
  90
  91 int                     VacuumCostBalance = 0;                  /* working state for vacuum */
  92 bool            VacuumCostActive = false;