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/*-------------------------------------------------------------------------
*
* globals.c
* global variable declarations
*
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/init/globals.c,v 1.106 2008/11/09 00:28:35 tgl Exp $
*
* NOTES
* Globals used all over the place should be declared here and not
* in other modules.
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "libpq/pqcomm.h"
#include "miscadmin.h"
#include "storage/backendid.h"
ProtocolVersion FrontendProtocol = PG_PROTOCOL_LATEST;
volatile bool InterruptPending = false;
volatile bool QueryCancelPending = false;
volatile bool ProcDiePending = false;
volatile bool ImmediateInterruptOK = false;
volatile uint32 InterruptHoldoffCount = 0;
volatile uint32 CritSectionCount = 0;
int MyProcPid;
pg_time_t MyStartTime;
struct Port *MyProcPort;
long MyCancelKey;
/*
* DataDir is the absolute path to the top level of the PGDATA directory tree.
* Except during early startup, this is also the server's working directory;
* most code therefore can simply use relative paths and not reference DataDir
* explicitly.
*/
char *DataDir = NULL;
char OutputFileName[MAXPGPATH]; /* debugging output file */
char my_exec_path[MAXPGPATH]; /* full path to my executable */
char pkglib_path[MAXPGPATH]; /* full path to lib directory */
#ifdef EXEC_BACKEND
char postgres_exec_path[MAXPGPATH]; /* full path to backend */
/* note: currently this is not valid in backend processes */
#endif
BackendId MyBackendId = InvalidBackendId;
Oid MyDatabaseId = InvalidOid;
Oid MyDatabaseTableSpace = InvalidOid;
/*
* DatabasePath is the path (relative to DataDir) of my database's
* primary directory, ie, its directory in the default tablespace.
*/
char *DatabasePath = NULL;
pid_t PostmasterPid = 0;
/*
* IsPostmasterEnvironment is true in a postmaster process and any postmaster
* child process; it is false in a standalone process (bootstrap or
* standalone backend). IsUnderPostmaster is true in postmaster child
* processes. Note that "child process" includes all children, not only
* regular backends. These should be set correctly as early as possible
* in the execution of a process, so that error handling will do the right
* things if an error should occur during process initialization.
*
* These are initialized for the bootstrap/standalone case.
*/
bool IsPostmasterEnvironment = false;
bool IsUnderPostmaster = false;
bool ExitOnAnyError = false;
int DateStyle = USE_ISO_DATES;
int DateOrder = DATEORDER_MDY;
int IntervalStyle = INTSTYLE_POSTGRES;
bool HasCTZSet = false;
int CTimeZone = 0;
bool enableFsync = true;
bool allowSystemTableMods = false;
int work_mem = 1024;
int maintenance_work_mem = 16384;
/*
* Primary determinants of sizes of shared-memory structures. MaxBackends is
* MaxConnections + autovacuum_max_workers (it is computed by the GUC assign
* hook):
*/
int NBuffers = 1000;
int MaxBackends = 100;
int MaxConnections = 90;
int VacuumCostPageHit = 1; /* GUC parameters for vacuum */
int VacuumCostPageMiss = 10;
int VacuumCostPageDirty = 20;
int VacuumCostLimit = 200;
int VacuumCostDelay = 0;
int VacuumCostBalance = 0; /* working state for vacuum */
bool VacuumCostActive = false;
int GinFuzzySearchLimit = 0;
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