admin/mruby-mruby
1
0
Fork 0
mirror of https://github.com/mruby/mruby synced 2026-06-08 16:11:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

Use stack memory for small name of Struct members

Browse Source
This commit is contained in:
dearblue
2018-08-18 11:44:44 +09:00
parent c53b7cedcc
commit a76da32567
1 changed files with 13 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mrbgems/mruby-struct/src/struct.c
+13 -2
View File
@@ -123,18 +123,29 @@ mrb_struct_ref(mrb_state *mrb, mrb_value obj)
static mrb_sym
mrb_id_attrset(mrb_state *mrb, mrb_sym id)
{
#define STACKED_ALLOC_MAX 32
#define STACKED_STRING_MAX (STACKED_ALLOC_MAX - 1) /* '=' character */
const char *name;
char *buf;
mrb_int len;
mrb_sym mid;
char stacked[STACKED_ALLOC_MAX];
name = mrb_sym2name_len(mrb, id, &len);
buf = (char *)mrb_malloc(mrb, (size_t)len+1);
if (len > STACKED_STRING_MAX) {
buf = (char *)mrb_malloc(mrb, (size_t)len+1);
}
else {
buf = stacked;
}
memcpy(buf, name, (size_t)len);
buf[len] = '=';
mid = mrb_intern(mrb, buf, len+1);
mrb_free(mrb, buf);
if (buf != stacked) {
mrb_free(mrb, buf);
}
return mid;
}