update NEWS for new GC related features.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47536 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index 7ae255fd00..fd571f61fc 100644
--- a/NEWS
+++ b/NEWS
@@ -45,6 +45,10 @@ with all sufficient information, see the ChangeLog file.
   * New methods:
     * File::Stat#birthtime
 
+* GC
+  * Improvements
+    * Introduce incremental marking for major GC. [Feature #10137]
+
 * Kernel
   * New methods:
     * Kernel#itself
@@ -78,6 +82,11 @@ with all sufficient information, see the ChangeLog file.
 
 === Core classes compatibility issues (excluding feature bug fixes)
 
+* GC
+  * incompatible changes:
+    * Rename GC.stat entries. [Feature #9924]
+      See https://docs.google.com/spreadsheets/d/11Ua4uBr6o0k-nORrZLEIIUkHJ9JRzRR0NyZfrhEEnc8/edit?usp=sharing
+
 * IO
   * incompatible changes:
     * When flushing file IO, you cannot assume that the metadata of the file
@@ -238,3 +247,7 @@ with all sufficient information, see the ChangeLog file.
   but not only the end of a string.  Therefore, result strings may not
   be NUL-terminated, `StringValueCStr()` is needed calling to obtain a
   NUL-terminated C string.
+
+* rb_tracepoint_new() supports new internal events accessible only from C:
+  * RUBY_INTERNAL_EVENT_GC_ENTER
+  * RUBY_INTERNAL_EVENT_GC_EXIT