* NEWS: add improvements of the garbage collector.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37890 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Tue Nov 27 13:59:29 2012  Narihiro Nakamura  <authornari@gmail.com>
+
+	* NEWS: add improvements of the garbage collector.
+
 Tue Nov 27 13:27:46 2012  Eric Hodel  <drbrain@segment7.net>
 
 	* lib/rdoc*:  Updated to RDoc 4.0 (pre-release)

NEWS

@@ -50,6 +50,12 @@ with all sufficient information, see the ChangeLog file.
       * File.fnmatch? now expands braces in the pattern if
         File::FNM_EXTGLOB option is given.
 
+  * GC
+    * improvements:
+      * introduced the bitmap marking which suppresses to copy a memory page
+        with Copy-on-Write.
+      * introduced the non-recurcive marking which avoids unexpected stack overflow.
+
   * GC::Profiler
     * added method:
       * added GC::Profiler.raw_data which returns raw profile data for GC.