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time.c: st_update

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* time.c (zone_str): lookup or insert by using st_update() at once.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38343 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2012-12-12 09:27:12 +00:00
parent 486795d951
commit a773539d3a
2 changed files with 20 additions and 10 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
Wed Dec 12 18:27:09 2012 Nobuyoshi Nakada <nobu@ruby-lang.org>
* time.c (zone_str): lookup or insert by using st_update() at once.
Wed Dec 12 15:30:11 2012 NARUSE, Yui <naruse@ruby-lang.org>
* configure.in: add -fno-omit-frame-pointer if libexecinfo is used.

26
time.c
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@ -1023,22 +1023,28 @@ timegmw_noleapsecond(struct vtm *vtm)
static st_table *zone_table;
static int
zone_str_update(st_data_t *key, st_data_t *value, st_data_t arg, int existing)
{
const char *s = (const char *)*key;
const char **ret = (const char **)arg;
if (existing) {
*ret = (const char *)*value;
return ST_STOP;
}
*ret = s = strdup(s);
*key = *value = (st_data_t)s;
return ST_CONTINUE;
}
static const char *
zone_str(const char *s)
{
st_data_t k, v;
if (!zone_table)
zone_table = st_init_strtable();
k = (st_data_t)s;
if (st_lookup(zone_table, k, &v)) {
return (const char *)v;
}
s = strdup(s);
k = (st_data_t)s;
st_add_direct(zone_table, k, k);
st_update(zone_table, (st_data_t)s, zone_str_update, (st_data_t)&s);
return s;
}