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Path: / / usr / include / pgsql / server / utils

Full Path (server): /usr/include/pgsql/server/utils

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Editing: guc_tables.h

/*------------------------------------------------------------------------- * * guc_tables.h * Declarations of tables used by GUC. * * See src/backend/utils/misc/README for design notes. * * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group * * src/include/utils/guc_tables.h * *------------------------------------------------------------------------- */ #ifndef GUC_TABLES_H #define GUC_TABLES_H 1 #include "utils/guc.h" /* * GUC supports these types of variables: */ enum config_type { PGC_BOOL, PGC_INT, PGC_REAL, PGC_STRING, PGC_ENUM }; union config_var_val { bool boolval; int intval; double realval; char *stringval; int enumval; }; /* * The actual value of a GUC variable can include a malloc'd opaque struct * "extra", which is created by its check_hook and used by its assign_hook. */ typedef struct config_var_value { union config_var_val val; void *extra; } config_var_value; /* * Groupings to help organize all the run-time options for display */ enum config_group { UNGROUPED, FILE_LOCATIONS, CONN_AUTH, CONN_AUTH_SETTINGS, CONN_AUTH_SECURITY, RESOURCES, RESOURCES_MEM, RESOURCES_DISK, RESOURCES_KERNEL, RESOURCES_VACUUM_DELAY, RESOURCES_BGWRITER, RESOURCES_ASYNCHRONOUS, WAL, WAL_SETTINGS, WAL_CHECKPOINTS, WAL_ARCHIVING, REPLICATION, REPLICATION_SENDING, REPLICATION_MASTER, REPLICATION_STANDBY, QUERY_TUNING, QUERY_TUNING_METHOD, QUERY_TUNING_COST, QUERY_TUNING_GEQO, QUERY_TUNING_OTHER, LOGGING, LOGGING_WHERE, LOGGING_WHEN, LOGGING_WHAT, STATS, STATS_MONITORING, STATS_COLLECTOR, AUTOVACUUM, CLIENT_CONN, CLIENT_CONN_STATEMENT, CLIENT_CONN_LOCALE, CLIENT_CONN_OTHER, LOCK_MANAGEMENT, COMPAT_OPTIONS, COMPAT_OPTIONS_PREVIOUS, COMPAT_OPTIONS_CLIENT, ERROR_HANDLING_OPTIONS, PRESET_OPTIONS, CUSTOM_OPTIONS, DEVELOPER_OPTIONS }; /* * Stack entry for saving the state a variable had prior to an uncommitted * transactional change */ typedef enum { /* This is almost GucAction, but we need a fourth state for SET+LOCAL */ GUC_SAVE, /* entry caused by function SET option */ GUC_SET, /* entry caused by plain SET command */ GUC_LOCAL, /* entry caused by SET LOCAL command */ GUC_SET_LOCAL /* entry caused by SET then SET LOCAL */ } GucStackState; typedef struct guc_stack { struct guc_stack *prev; /* previous stack item, if any */ int nest_level; /* nesting depth at which we made entry */ GucStackState state; /* see enum above */ GucSource source; /* source of the prior value */ /* masked value's source must be PGC_S_SESSION, so no need to store it */ GucContext scontext; /* context that set the prior value */ GucContext masked_scontext; /* context that set the masked value */ config_var_value prior; /* previous value of variable */ config_var_value masked; /* SET value in a GUC_SET_LOCAL entry */ } GucStack; /* * 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 '. ') * * Note that sourcefile/sourceline are kept here, and not pushed into stacked * values, although in principle they belong with some stacked value if the * active value is session- or transaction-local. This is to avoid bloating * stack entries. We know they are only relevant when source == PGC_S_FILE. */ 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 guc.h */ /* variable fields, initialized at runtime: */ enum config_type vartype; /* type of variable (set only at startup) */ int status; /* status bits, see below */ GucSource source; /* source of the current actual value */ GucSource reset_source; /* source of the reset_value */ GucContext scontext; /* context that set the current value */ GucContext reset_scontext; /* context that set the reset value */ GucStack *stack; /* stacked prior values */ void *extra; /* "extra" pointer for current actual value */ char *sourcefile; /* file current setting is from (NULL if not * set in config file) */ int sourceline; /* line in source file */ }; /* bit values in status field */ #define GUC_IS_IN_FILE 0x0001 /* found it in config file */ /* * Caution: the GUC_IS_IN_FILE bit is transient state for ProcessConfigFile. * Do not assume that its value represents useful information elsewhere. */ /* GUC records for specific variable types */ struct config_bool { struct config_generic gen; /* constant fields, must be set correctly in initial value: */ bool *variable; bool boot_val; GucBoolCheckHook check_hook; GucBoolAssignHook assign_hook; GucShowHook show_hook; /* variable fields, initialized at runtime: */ bool reset_val; void *reset_extra; }; struct config_int { struct config_generic gen; /* constant fields, must be set correctly in initial value: */ int *variable; int boot_val; int min; int max; GucIntCheckHook check_hook; GucIntAssignHook assign_hook; GucShowHook show_hook; /* variable fields, initialized at runtime: */ int reset_val; void *reset_extra; }; struct config_real { struct config_generic gen; /* constant fields, must be set correctly in initial value: */ double *variable; double boot_val; double min; double max; GucRealCheckHook check_hook; GucRealAssignHook assign_hook; GucShowHook show_hook; /* variable fields, initialized at runtime: */ double reset_val; void *reset_extra; }; struct config_string { struct config_generic gen; /* constant fields, must be set correctly in initial value: */ char **variable; const char *boot_val; GucStringCheckHook check_hook; GucStringAssignHook assign_hook; GucShowHook show_hook; /* variable fields, initialized at runtime: */ char *reset_val; void *reset_extra; }; struct config_enum { struct config_generic gen; /* constant fields, must be set correctly in initial value: */ int *variable; int boot_val; const struct config_enum_entry *options; GucEnumCheckHook check_hook; GucEnumAssignHook assign_hook; GucShowHook show_hook; /* variable fields, initialized at runtime: */ int reset_val; void *reset_extra; }; /* 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[]; /* get the current set of variables */ extern struct config_generic **get_guc_variables(void); extern void build_guc_variables(void); /* search in enum options */ extern const char *config_enum_lookup_by_value(struct config_enum * record, int val); extern bool config_enum_lookup_by_name(struct config_enum * record, const char *value, int *retval); #endif /* GUC_TABLES_H */
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