internal.h: use built-in encoding indexes

* internal.h (rb_{ascii8bit,utf8,usascii}_encindex): use built-in
  encoding indexes for optimization.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41741 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,4 +1,7 @@
-Tue Jul  2 17:22:21 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Tue Jul  2 17:22:25 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* internal.h (rb_{ascii8bit,utf8,usascii}_encindex): use built-in
+	  encoding indexes for optimization.
 
 	* encoding.c (enc_inspect, rb_locale_encindex),
 	  (enc_set_filesystem_encoding, rb_filesystem_encindex): use built-in

encoding.c

@@ -24,6 +24,10 @@
 #endif
 #include "ruby/util.h"
 
+#undef rb_ascii8bit_encindex
+#undef rb_utf8_encindex
+#undef rb_usascii_encindex
+
 #if defined __GNUC__ && __GNUC__ >= 4
 #pragma GCC visibility push(default)
 int rb_enc_register(const char *name, rb_encoding *encoding);

internal.h

@@ -209,6 +209,9 @@ enum ruby_preserved_encindex {
     ENCINDEX_BUILTIN_MAX
 };
 #endif
+#define rb_ascii8bit_encindex() ENCINDEX_ASCII
+#define rb_utf8_encindex()      ENCINDEX_UTF_8
+#define rb_usascii_encindex()   ENCINDEX_US_ASCII
 ID rb_id_encoding(void);
 void rb_gc_mark_encodings(void);
 

thread.c

@@ -59,10 +59,10 @@
 
 #include "eval_intern.h"
 #include "gc.h"
-#include "internal.h"
 #include "timev.h"
 #include "ruby/io.h"
 #include "ruby/thread.h"
+#include "internal.h"
 
 #ifndef USE_NATIVE_THREAD_PRIORITY
 #define USE_NATIVE_THREAD_PRIORITY 0