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* include/ruby/ruby.h (rb_intern): memorize interned ID for constant

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string, using gcc's __builtin_constant_p and statement expression.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14888 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr 2008-01-04 17:21:53 +00:00
parent f3fa37e8e5
commit 9eab58ee03
3 changed files with 20 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Sat Jan 5 02:21:10 2008 Tanaka Akira <akr@fsij.org>
* include/ruby/ruby.h (rb_intern): memorize interned ID for constant
string, using gcc's __builtin_constant_p and statement expression.
Sat Jan 5 02:14:45 2008 Yukihiro Matsumoto <matz@ruby-lang.org> Sat Jan 5 02:14:45 2008 Yukihiro Matsumoto <matz@ruby-lang.org>
* string.c (trnext): should enable backslash escape. * string.c (trnext): should enable backslash escape.

14
include/ruby/ruby.h
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@ -719,6 +719,20 @@ const char *rb_id2name(ID);
ID rb_to_id(VALUE); ID rb_to_id(VALUE);
VALUE rb_id2str(ID); VALUE rb_id2str(ID);
#ifdef __GNUC__
/* __builtin_constant_p and statement expression is available
* since gcc-2.7.2.3 at least. */
#define rb_intern(str) \
(__builtin_constant_p(str) ? \
({ \
static ID rb_intern_id_cache; \
if (!rb_intern_id_cache) \
rb_intern_id_cache = rb_intern(str); \
rb_intern_id_cache; \
}) : \
rb_intern(str))
#endif
char *rb_class2name(VALUE); char *rb_class2name(VALUE);
char *rb_obj_classname(VALUE); char *rb_obj_classname(VALUE);

1
parse.y
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@ -9001,6 +9001,7 @@ rb_intern2(const char *name, long len)
return rb_intern3(name, len, rb_enc_from_index(0)); return rb_intern3(name, len, rb_enc_from_index(0));
} }
#undef rb_intern
ID ID
rb_intern(const char *name) rb_intern(const char *name)
{ {