From b5de76e22ba9f07ae7ea0c63a231f06b51c3f803 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Sun, 6 Feb 2011 06:09:19 +0000
Subject: avoid unnecessary rb_intern() calls

Micro-optimization :P  Oh well ERB makes it easy
---
 ext/mall/mall.c.erb | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/ext/mall/mall.c.erb b/ext/mall/mall.c.erb
index 2fa7270..66c1973 100644
--- a/ext/mall/mall.c.erb
+++ b/ext/mall/mall.c.erb
@@ -17,7 +17,23 @@ static VALUE mMall;
  *	int keepcost; // top-most, releasable (via malloc_trim) space
  * };
  */
+<%
+mallinfo_keys = %w(
+arena
+ordblks
+smblks
+hblks
+hblkhd
+usmblks
+fsmblks
+uordblks
+fordblks
+keepcost
+) %>
 
+<% mallinfo_keys.each { |x| %>
+static VALUE sym_<%= x %>;
+<% } %>
 
 static VALUE info(VALUE klass)
 {
@@ -25,7 +41,7 @@ static VALUE info(VALUE klass)
 	struct mallinfo stats = mallinfo(); /* whee aggregate returns :( */
 
 #define MALLINFO_SET(KEY) \
-	rb_hash_aset(rv, ID2SYM(rb_intern(#KEY)), INT2FIX(stats.KEY))
+	rb_hash_aset(rv, sym_##KEY, INT2FIX(stats.KEY))
 
 	MALLINFO_SET(arena);
 	MALLINFO_SET(ordblks);
@@ -85,6 +101,9 @@ void Init_mall(void)
 #ifdef HAVE_MALLOC_STATS
 	rb_define_singleton_method(mMall, "dump_stats", dump_stats, 0);
 #endif /* HAVE_MALLOC_STATS */
+<% mallinfo_keys.each { |x| %>
+	sym_<%= x %> = ID2SYM(rb_intern("<%= x %>"));
+<% } %>
 
 <% %w(
 mxfast nlblks grain keep
-- 
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