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/*
* guc.h
*
* External declarations pertaining to backend/utils/misc/guc.c and
* backend/utils/misc/guc-file.l
*
* $Header: /cvsroot/pgsql/src/include/utils/guc.h,v 1.4 2000/07/27 19:49:24 momjian Exp $
*/
#ifndef GUC_H
#define GUC_H
#include "postgres.h"
/*
* Certain options can only be set at certain times. The rules are
* like this:
*
* POSTMASTER options can only be set when the postmaster starts,
* either from the configuration file or the command line.
*
* SIGHUP options can only be set at postmaster startup or by changing
* the configuration file and sending the HUP signal to the postmaster
* or a backend process. (Notice that the signal receipt will not be
* evaluated immediately. The postmaster and the backend block at a
* certain point in their main loop. It's safer to wait than to read a
* file asynchronously.)
*
* BACKEND options can only be set at postmaster startup or with the
* PGOPTIONS variable from the client when the connection is
* initiated. Note that you cannot change this kind of option using
* the SIGHUP mechanism, that would defeat the purpose of this being
* fixed for a given backend once started.
*
* SUSET options can be set at postmaster startup, with the SIGHUP
* mechanism, or from SQL if you're a superuser. These options cannot
* be set using the PGOPTIONS mechanism, because there is not check as
* to who does this.
*
* USERSET options can be set by anyone any time.
*/
typedef enum {
PGC_POSTMASTER,
PGC_SIGHUP,
PGC_BACKEND,
PGC_SUSET,
PGC_USERSET
} GucContext;
void SetConfigOption(const char * name, const char * value, GucContext context);
const char * GetConfigOption(const char * name);
void ProcessConfigFile(GucContext context);
void ResetAllOptions(void);
void ParseLongOption(const char * string, char ** name, char ** value);
bool set_config_option(const char * name, const char * value, GucContext context, bool DoIt);
extern bool Debug_print_query;
extern bool Debug_print_plan;
extern bool Debug_print_parse;
extern bool Debug_print_rewritten;
extern bool Debug_pretty_print;
extern bool Show_parser_stats;
extern bool Show_planner_stats;
extern bool Show_executor_stats;
extern bool Show_query_stats;
extern bool Show_btree_build_stats;
extern bool SQL_inheritance;
#endif /*GUC_H*/
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