diff options
Diffstat (limited to 'src/backend/utils/misc/guc.c')
| -rw-r--r-- | src/backend/utils/misc/guc.c | 57 |
1 files changed, 50 insertions, 7 deletions
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c index e76c0830035..959a1c76bff 100644 --- a/src/backend/utils/misc/guc.c +++ b/src/backend/utils/misc/guc.c @@ -3329,10 +3329,10 @@ set_config_option(const char *name, const char *value, else srole = BOOTSTRAP_SUPERUSERID; - return set_config_option_ext(name, value, - context, source, srole, - action, changeVal, elevel, - is_reload); + return set_config_with_handle(name, NULL, value, + context, source, srole, + action, changeVal, elevel, + is_reload); } /* @@ -3356,6 +3356,27 @@ set_config_option_ext(const char *name, const char *value, GucAction action, bool changeVal, int elevel, bool is_reload) { + return set_config_with_handle(name, NULL, value, + context, source, srole, + action, changeVal, elevel, + is_reload); +} + + +/* + * set_config_with_handle: takes an optional 'handle' argument, which can be + * obtained by the caller from get_config_handle(). + * + * This should be used by callers which repeatedly set the same config + * option(s), and want to avoid the overhead of a hash lookup each time. + */ +int +set_config_with_handle(const char *name, config_handle *handle, + const char *value, + GucContext context, GucSource source, Oid srole, + GucAction action, bool changeVal, int elevel, + bool is_reload) +{ struct config_generic *record; union config_var_val newval_union; void *newextra = NULL; @@ -3395,9 +3416,15 @@ set_config_option_ext(const char *name, const char *value, (errcode(ERRCODE_INVALID_TRANSACTION_STATE), errmsg("cannot set parameters during a parallel operation"))); - record = find_option(name, true, false, elevel); - if (record == NULL) - return 0; + /* if handle is specified, no need to look up option */ + if (!handle) + { + record = find_option(name, true, false, elevel); + if (record == NULL) + return 0; + } + else + record = handle; /* * Check if the option can be set at this time. See guc.h for the precise @@ -4167,6 +4194,22 @@ set_config_option_ext(const char *name, const char *value, /* + * Retrieve a config_handle for the given name, suitable for calling + * set_config_with_handle(). Only return handle to permanent GUC. + */ +config_handle * +get_config_handle(const char *name) +{ + struct config_generic *gen = find_option(name, false, false, 0); + + if (gen && ((gen->flags & GUC_CUSTOM_PLACEHOLDER) == 0)) + return gen; + + return NULL; +} + + +/* * Set the fields for source file and line number the setting came from. */ static void |