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/*-------------------------------------------------------------------------
*
* guc_tables.h
* Declarations of tables used by GUC.
*
* See src/backend/utils/misc/README for design notes.
*
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/utils/guc_tables.h,v 1.7 2003/11/29 22:41:15 pgsql Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef GUC_TABLES
#define GUC_TABLES 1
/*
* Groupings to help organize all the run-time options for display
*/
enum config_group
{
UNGROUPED,
CONN_AUTH,
CONN_AUTH_SETTINGS,
CONN_AUTH_SECURITY,
RESOURCES,
RESOURCES_MEM,
RESOURCES_FSM,
RESOURCES_KERNEL,
WAL,
WAL_SETTINGS,
WAL_CHECKPOINTS,
QUERY_TUNING,
QUERY_TUNING_METHOD,
QUERY_TUNING_COST,
QUERY_TUNING_GEQO,
QUERY_TUNING_OTHER,
LOGGING,
LOGGING_SYSLOG,
LOGGING_WHEN,
LOGGING_WHAT,
STATS,
STATS_MONITORING,
STATS_COLLECTOR,
CLIENT_CONN,
CLIENT_CONN_STATEMENT,
CLIENT_CONN_LOCALE,
CLIENT_CONN_OTHER,
LOCK_MANAGEMENT,
COMPAT_OPTIONS,
COMPAT_OPTIONS_PREVIOUS,
COMPAT_OPTIONS_CLIENT,
DEVELOPER_OPTIONS
};
/*
* GUC supports these types of variables:
*/
enum config_type
{
PGC_BOOL,
PGC_INT,
PGC_REAL,
PGC_STRING
};
/*
* Generic fields applicable to all types of variables
*
* The short description should be less than 80 chars in length. Some
* applications may use the long description as well, and will append
* it to the short description. (separated by a newline or '. ')
*/
struct config_generic
{
/* constant fields, must be set correctly in initial value: */
const char *name; /* name of variable - MUST BE FIRST */
GucContext context; /* context required to set the variable */
enum config_group group; /* to help organize variables by function */
const char *short_desc; /* short desc. of this variable's purpose */
const char *long_desc; /* long desc. of this variable's purpose */
int flags; /* flag bits, see below */
/* variable fields, initialized at runtime: */
enum config_type vartype; /* type of variable (set only at startup) */
int status; /* status bits, see below */
GucSource reset_source; /* source of the reset_value */
GucSource session_source; /* source of the session_value */
GucSource tentative_source; /* source of the tentative_value */
GucSource source; /* source of the current actual value */
};
/* bit values in flags field */
#define GUC_LIST_INPUT 0x0001 /* input can be list format */
#define GUC_LIST_QUOTE 0x0002 /* double-quote list elements */
#define GUC_NO_SHOW_ALL 0x0004 /* exclude from SHOW ALL */
#define GUC_NO_RESET_ALL 0x0008 /* exclude from RESET ALL */
#define GUC_REPORT 0x0010 /* auto-report changes to client */
#define GUC_NOT_IN_SAMPLE 0x0020 /* not in postgresql.conf.sample */
#define GUC_DISALLOW_IN_FILE 0x0040 /* can't set in postgresql.conf */
/* bit values in status field */
#define GUC_HAVE_TENTATIVE 0x0001 /* tentative value is defined */
#define GUC_HAVE_LOCAL 0x0002 /* a SET LOCAL has been executed */
/* GUC records for specific variable types */
struct config_bool
{
struct config_generic gen;
/* these fields must be set correctly in initial value: */
/* (all but reset_val are constants) */
bool *variable;
bool reset_val;
bool (*assign_hook) (bool newval, bool doit, bool interactive);
const char *(*show_hook) (void);
/* variable fields, initialized at runtime: */
bool session_val;
bool tentative_val;
};
struct config_int
{
struct config_generic gen;
/* these fields must be set correctly in initial value: */
/* (all but reset_val are constants) */
int *variable;
int reset_val;
int min;
int max;
bool (*assign_hook) (int newval, bool doit, bool interactive);
const char *(*show_hook) (void);
/* variable fields, initialized at runtime: */
int session_val;
int tentative_val;
};
struct config_real
{
struct config_generic gen;
/* these fields must be set correctly in initial value: */
/* (all but reset_val are constants) */
double *variable;
double reset_val;
double min;
double max;
bool (*assign_hook) (double newval, bool doit, bool interactive);
const char *(*show_hook) (void);
/* variable fields, initialized at runtime: */
double session_val;
double tentative_val;
};
struct config_string
{
struct config_generic gen;
/* these fields must be set correctly in initial value: */
/* (all are constants) */
char **variable;
const char *boot_val;
const char *(*assign_hook) (const char *newval, bool doit, bool interactive);
const char *(*show_hook) (void);
/* variable fields, initialized at runtime: */
char *reset_val;
char *session_val;
char *tentative_val;
};
/* constant tables corresponding to enums above and in guc.h */
extern const char *const config_group_names[];
extern const char *const config_type_names[];
extern const char *const GucContext_Names[];
extern const char *const GucSource_Names[];
/* the current set of variables */
extern struct config_generic **guc_variables;
extern int num_guc_variables;
extern void build_guc_variables(void);
#endif
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