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9fd842c4b2
is an error, warning, etc. Gavin Sherry
144 lines
5.1 KiB
C
144 lines
5.1 KiB
C
/*
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* guc.h
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*
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* External declarations pertaining to backend/utils/misc/guc.c and
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* backend/utils/misc/guc-file.l
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*
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* $Id: guc.h,v 1.22 2002/09/02 05:42:54 momjian Exp $
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*/
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#ifndef GUC_H
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#define GUC_H
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#include "nodes/pg_list.h"
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#include "utils/array.h"
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/*
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* Certain options can only be set at certain times. The rules are
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* like this:
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*
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* POSTMASTER options can only be set when the postmaster starts,
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* either from the configuration file or the command line.
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*
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* SIGHUP options can only be set at postmaster startup or by changing
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* the configuration file and sending the HUP signal to the postmaster
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* or a backend process. (Notice that the signal receipt will not be
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* evaluated immediately. The postmaster and the backend block at a
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* certain point in their main loop. It's safer to wait than to read a
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* file asynchronously.)
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*
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* BACKEND options can only be set at postmaster startup, from the
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* configuration file, or with the PGOPTIONS variable from the client
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* when the connection is initiated. Furthermore, an already-started
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* backend will ignore changes to such an option in the configuration
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* file. The idea is that these options are fixed for a given backend
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* once it's started, but they can vary across backends.
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*
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* SUSET options can be set at postmaster startup, with the SIGHUP
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* mechanism, or from SQL if you're a superuser. These options cannot
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* be set using the PGOPTIONS mechanism, because there is not check as
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* to who does this.
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*
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* USERSET options can be set by anyone any time.
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*/
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typedef enum
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{
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PGC_POSTMASTER,
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PGC_SIGHUP,
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PGC_BACKEND,
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PGC_SUSET,
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PGC_USERSET
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} GucContext;
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/*
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* The following type records the source of the current setting. A
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* new setting can only take effect if the previous setting had the
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* same or lower level. (E.g, changing the config file doesn't
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* override the postmaster command line.) Tracking the source allows us
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* to process sources in any convenient order without affecting results.
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* Sources <= PGC_S_OVERRIDE will set the default used by RESET, as well
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* as the current value.
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*/
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typedef enum
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{
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PGC_S_DEFAULT = 0, /* wired-in default */
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PGC_S_ENV_VAR = 1, /* postmaster environment variable */
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PGC_S_FILE = 2, /* postgresql.conf */
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PGC_S_ARGV = 3, /* postmaster command line */
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PGC_S_DATABASE = 4, /* per-database setting */
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PGC_S_USER = 5, /* per-user setting */
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PGC_S_CLIENT = 6, /* from client (PGOPTIONS) */
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PGC_S_OVERRIDE = 7, /* special case to forcibly set default */
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PGC_S_SESSION = 8 /* SET command */
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} GucSource;
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extern void SetConfigOption(const char *name, const char *value,
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GucContext context, GucSource source);
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extern const char *GetConfigOption(const char *name);
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extern const char *GetConfigOptionResetString(const char *name);
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extern void ProcessConfigFile(GucContext context);
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extern void InitializeGUCOptions(void);
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extern void ResetAllOptions(void);
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extern void AtEOXact_GUC(bool isCommit);
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extern void ParseLongOption(const char *string, char **name, char **value);
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extern bool set_config_option(const char *name, const char *value,
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GucContext context, GucSource source,
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bool isLocal, bool DoIt);
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extern void ShowGUCConfigOption(const char *name);
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extern void ShowAllGUCConfig(void);
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extern char *GetConfigOptionByName(const char *name, const char **varname);
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extern char *GetConfigOptionByNum(int varnum, const char **varname, bool *noshow);
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extern int GetNumConfigOptions(void);
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extern void SetPGVariable(const char *name, List *args, bool is_local);
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extern void GetPGVariable(const char *name);
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extern void ResetPGVariable(const char *name);
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extern char *flatten_set_variable_args(const char *name, List *args);
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extern void ProcessGUCArray(ArrayType *array, GucSource source);
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extern ArrayType *GUCArrayAdd(ArrayType *array, const char *name, const char *value);
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extern ArrayType *GUCArrayDelete(ArrayType *array, const char *name);
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extern const char *assign_min_error_statement(const char *newval, bool doit,
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bool interactive);
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extern const char *assign_server_min_messages(const char *newval,
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bool doit, bool interactive);
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extern const char *assign_client_min_messages(const char *newval,
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bool doit, bool interactive);
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extern bool Log_statement;
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extern bool Log_duration;
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extern bool Debug_print_plan;
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extern bool Debug_print_parse;
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extern bool Debug_print_rewritten;
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extern bool Debug_pretty_print;
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extern bool Show_parser_stats;
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extern bool Show_planner_stats;
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extern bool Show_executor_stats;
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extern bool Show_statement_stats;
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extern bool Show_btree_build_stats;
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extern bool Explain_pretty_print;
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extern bool SQL_inheritance;
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extern bool Australian_timezones;
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extern char *debug_query_string;
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extern int log_min_error_statement;
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extern char *log_min_error_statement_str;
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extern const char log_min_error_statement_str_default[];
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extern int server_min_messages;
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extern char *server_min_messages_str;
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extern const char server_min_messages_str_default[];
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extern int client_min_messages;
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extern char *client_min_messages_str;
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extern const char client_min_messages_str_default[];
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#endif /* GUC_H */
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