mirrors
/
postgres
mirror of https://github.com/postgres/postgres
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add sourcefile/sourceline data to EXEC_BACKEND GUC transmission files. 

This oversight meant that on Windows, the pg_settings view would not
display source file or line number information for values coming from
postgresql.conf, unless the backend had received a SIGHUP since starting.

In passing, also make the error detection in read_nondefault_variables a
tad more thorough, and fix it to not lose precision on float GUCs (these
changes are already in HEAD as of my previous commit).
This commit is contained in:
Tom Lane 2011-10-04 17:00:17 -04:00
parent 50af47f12b
commit 5aa09d5df3
1 changed files with 27 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/backend/utils/misc/guc.c
View File

@ -6743,6 +6743,8 @@ is_newvalue_equal(struct config_generic * record, const char *newvalue)
*
* variable name, string, null terminated
* variable value, string, null terminated
* variable sourcefile, string, null terminated (empty if none)
* variable sourceline, integer
* variable source, integer
*/
static void
@ -6779,8 +6781,7 @@ write_one_nondefault_variable(FILE *fp, struct config_generic * gconf)
{
struct config_real *conf = (struct config_real *) gconf;
/* Could lose precision here? */
fprintf(fp, "%f", *conf->variable);
fprintf(fp, "%.17g", *conf->variable);
}
break;
@ -6804,7 +6805,12 @@ write_one_nondefault_variable(FILE *fp, struct config_generic * gconf)
fputc(0, fp);
fwrite(&gconf->source, sizeof(gconf->source), 1, fp);
if (gconf->sourcefile)
fprintf(fp, "%s", gconf->sourcefile);
fputc(0, fp);
fwrite(&gconf->sourceline, 1, sizeof(gconf->sourceline), fp);
fwrite(&gconf->source, 1, sizeof(gconf->source), fp);
}
void
@ -6907,8 +6913,10 @@ read_nondefault_variables(void)
{
FILE *fp;
char *varname,
*varvalue;
int varsource;
*varvalue,
*varsourcefile;
int varsourceline;
GucSource varsource;
/*
* Open file
@ -6933,16 +6941,26 @@ read_nondefault_variables(void)
break;
if ((record = find_option(varname, true, FATAL)) == NULL)
elog(FATAL, "failed to locate variable %s in exec config params file", varname);
elog(FATAL, "failed to locate variable \"%s\" in exec config params file", varname);
if ((varvalue = read_string_with_null(fp)) == NULL)
elog(FATAL, "invalid format of exec config params file");
if (fread(&varsource, sizeof(varsource), 1, fp) == 0)
if ((varsourcefile = read_string_with_null(fp)) == NULL)
elog(FATAL, "invalid format of exec config params file");
if (fread(&varsourceline, 1, sizeof(varsourceline), fp) != sizeof(varsourceline))
elog(FATAL, "invalid format of exec config params file");
if (fread(&varsource, 1, sizeof(varsource), fp) != sizeof(varsource))
elog(FATAL, "invalid format of exec config params file");
(void) set_config_option(varname, varvalue, record->context,
varsource, GUC_ACTION_SET, true);
(void) set_config_option(varname, varvalue,
record->context, varsource,
GUC_ACTION_SET, true);
if (varsourcefile[0])
set_config_sourcefile(varname, varsourcefile, varsourceline);
free(varname);
free(varvalue);
free(varsourcefile);
}
FreeFile(fp);