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Change config_generic.vartype to be initialized at compile time

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Previously, this was initialized at run time so that it did not have
to be maintained by hand in guc_tables.c.  But since that table is now
generated anyway, we might as well generate this bit as well.

Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/8fdfb91e-60fb-44fa-8df6-f5dea47353c9@eisentraut.org
This commit is contained in:
Peter Eisentraut
2025-10-17 10:33:54 +02:00
parent 0a7bde4610
commit e1a912c86d
3 changed files with 3 additions and 28 deletions
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1
src/backend/utils/misc/gen_guc_tables.pl
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@@ -68,6 +68,7 @@ sub print_one_table
if $entry->{long_desc};
printf $ofh "\t\t\t.flags = %s,\n", $entry->{flags}
if $entry->{flags};
printf $ofh "\t\t\t.vartype = %s,\n", ('PGC_' . uc($type));
print $ofh "\t\t},\n";
printf $ofh "\t\t.variable = &%s,\n", $entry->{variable};
printf $ofh "\t\t.boot_val = %s,\n", $entry->{boot_val};

28
src/backend/utils/misc/guc.c
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@@ -890,48 +890,22 @@ build_guc_variables(void)
ALLOCSET_DEFAULT_SIZES);
/*
* Count all the built-in variables, and set their vartypes correctly.
* Count all the built-in variables.
*/
for (int i = 0; ConfigureNamesBool[i].gen.name; i++)
{
struct config_bool *conf = &ConfigureNamesBool[i];
/* Rather than requiring vartype to be filled in by hand, do this: */
conf->gen.vartype = PGC_BOOL;
num_vars++;
}
for (int i = 0; ConfigureNamesInt[i].gen.name; i++)
{
struct config_int *conf = &ConfigureNamesInt[i];
conf->gen.vartype = PGC_INT;
num_vars++;
}
for (int i = 0; ConfigureNamesReal[i].gen.name; i++)
{
struct config_real *conf = &ConfigureNamesReal[i];
conf->gen.vartype = PGC_REAL;
num_vars++;
}
for (int i = 0; ConfigureNamesString[i].gen.name; i++)
{
struct config_string *conf = &ConfigureNamesString[i];
conf->gen.vartype = PGC_STRING;
num_vars++;
}
for (int i = 0; ConfigureNamesEnum[i].gen.name; i++)
{
struct config_enum *conf = &ConfigureNamesEnum[i];
conf->gen.vartype = PGC_ENUM;
num_vars++;
}
/*
* Create hash table with 20% slack

2
src/include/utils/guc_tables.h
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@@ -177,8 +177,8 @@ struct config_generic
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 */
enum config_type vartype; /* type of variable */
/* 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 */