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Commit5f21560

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Dept. of second thoughts: interaction between DoIt and makeDepend
in set_config_option wasn't quite right. Also clean up a couple otherthings that could have been done better.
1 parent94bdc48 commit5f21560

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1 file changed

+42
-48
lines changed
  • src/backend/utils/misc

1 file changed

+42
-48
lines changed

‎src/backend/utils/misc/guc.c‎

Lines changed: 42 additions & 48 deletions
Original file line numberDiff line numberDiff line change
@@ -5,7 +5,7 @@
55
* command, configuration file, and command line options.
66
* See src/backend/utils/misc/README for more information.
77
*
8-
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.68 2002/05/1701:19:18 tgl Exp $
8+
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.69 2002/05/1720:32:29 tgl Exp $
99
*
1010
* Copyright 2000 by PostgreSQL Global Development Group
1111
* Written by Peter Eisentraut <peter_e@gmx.net>.
@@ -936,43 +936,33 @@ guc_var_compare(const void *a, const void *b)
936936
{
937937
structconfig_generic*confa=*(structconfig_generic**)a;
938938
structconfig_generic*confb=*(structconfig_generic**)b;
939-
charnamea[NAMEDATALEN];
940-
charnameb[NAMEDATALEN];
941-
intlen,
942-
i;
939+
constchar*namea;
940+
constchar*nameb;
943941

944942
/*
945943
* The temptation to use strcasecmp() here must be resisted, because
946944
* the array ordering has to remain stable across setlocale() calls.
947-
* So,apply an ASCII-only downcasing to both names and use strcmp().
945+
* So,build our own with a simple ASCII-only downcasing.
948946
*/
949-
len=strlen(confa->name);
950-
if (len >=NAMEDATALEN)
951-
len=NAMEDATALEN-1;
952-
for (i=0;i<len;i++)
953-
{
954-
charch=confa->name[i];
955-
956-
if (ch >='A'&&ch <='Z')
957-
ch+='a'-'A';
958-
namea[i]=ch;
959-
}
960-
namea[len]='\0';
961-
962-
len=strlen(confb->name);
963-
if (len >=NAMEDATALEN)
964-
len=NAMEDATALEN-1;
965-
for (i=0;i<len;i++)
966-
{
967-
charch=confb->name[i];
968-
969-
if (ch >='A'&&ch <='Z')
970-
ch+='a'-'A';
971-
nameb[i]=ch;
947+
namea=confa->name;
948+
nameb=confb->name;
949+
while (*namea&&*nameb)
950+
{
951+
charcha=*namea++;
952+
charchb=*nameb++;
953+
954+
if (cha >='A'&&cha <='Z')
955+
cha+='a'-'A';
956+
if (chb >='A'&&chb <='Z')
957+
chb+='a'-'A';
958+
if (cha!=chb)
959+
returncha-chb;
972960
}
973-
nameb[len]='\0';
974-
975-
returnstrcmp(namea,nameb);
961+
if (*namea)
962+
return1;/* a is longer */
963+
if (*nameb)
964+
return-1;/* b is longer */
965+
return0;
976966
}
977967

978968

@@ -1212,17 +1202,8 @@ ResetAllOptions(void)
12121202
break;
12131203
}
12141204

1215-
str=strdup(conf->reset_val);
1216-
if (str==NULL)
1217-
elog(ERROR,"out of memory");
1218-
1219-
/*
1220-
* Remember string in workspace, so that we can free it
1221-
* and avoid a permanent memory leak if hook elogs.
1222-
*/
1223-
if (guc_string_workspace)
1224-
free(guc_string_workspace);
1225-
guc_string_workspace=str;
1205+
/* We need not strdup here */
1206+
str=conf->reset_val;
12261207

12271208
if (conf->assign_hook)
12281209
{
@@ -1233,14 +1214,11 @@ ResetAllOptions(void)
12331214
elog(ERROR,"Failed to reset %s",conf->gen.name);
12341215
elseif (newstr!=str)
12351216
{
1236-
free(str);
12371217
/* See notes in set_config_option about casting */
12381218
str= (char*)newstr;
12391219
}
12401220
}
12411221

1242-
guc_string_workspace=NULL;
1243-
12441222
SET_STRING_VARIABLE(conf,str);
12451223
SET_STRING_TENTATIVE_VAL(conf,str);
12461224
conf->gen.source=conf->gen.reset_source;
@@ -1619,8 +1597,13 @@ set_config_option(const char *name, const char *value,
16191597
break;
16201598
}
16211599

1600+
/* Should we report errors interactively? */
16221601
interactive= (source >=PGC_S_SESSION);
1623-
makeDefault= (source <=PGC_S_OVERRIDE)&& (value!=NULL);
1602+
/*
1603+
* Should we set reset/session values? (If so, the behavior is not
1604+
* transactional.)
1605+
*/
1606+
makeDefault=DoIt&& (source <=PGC_S_OVERRIDE)&& (value!=NULL);
16241607

16251608
/*
16261609
* Ignore attempted set if overridden by previously processed setting.
@@ -1633,7 +1616,7 @@ set_config_option(const char *name, const char *value,
16331616
{
16341617
if (DoIt&& !makeDefault)
16351618
{
1636-
elog(DEBUG2,"setting %signored because previous source is higher",
1619+
elog(DEBUG2,"%s: settingignored because previous source is higher priority",
16371620
name);
16381621
return true;
16391622
}
@@ -1867,6 +1850,11 @@ set_config_option(const char *name, const char *value,
18671850
}
18681851
elseif (conf->reset_val)
18691852
{
1853+
/*
1854+
* We could possibly avoid strdup here, but easier to
1855+
* make this case work the same as the normal assignment
1856+
* case.
1857+
*/
18701858
newval=strdup(conf->reset_val);
18711859
if (newval==NULL)
18721860
{
@@ -2429,10 +2417,12 @@ ProcessGUCArray(ArrayType *array, GucSource source)
24292417
continue;
24302418

24312419
s=DatumGetCString(DirectFunctionCall1(textout,d));
2420+
24322421
ParseLongOption(s,&name,&value);
24332422
if (!value)
24342423
{
24352424
elog(WARNING,"cannot parse setting \"%s\"",name);
2425+
free(name);
24362426
continue;
24372427
}
24382428

@@ -2442,6 +2432,10 @@ ProcessGUCArray(ArrayType *array, GucSource source)
24422432
* checked when it was inserted.
24432433
*/
24442434
SetConfigOption(name,value,PGC_SUSET,source);
2435+
2436+
free(name);
2437+
if (value)
2438+
free(value);
24452439
}
24462440
}
24472441

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