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authortenderlove <tenderlove@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-09-12 15:40:09 +0000
committertenderlove <tenderlove@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-09-12 15:40:09 +0000
commitc4c53310c23d913c1ff25863f1d9f7332b548f51 (patch)
treebd9e8449c51bba80d8ba40ddfc042704e417ee25 /class.c
parentfd8fa1b29927918a40518481965735dc57a53811 (diff)
Copy the serial number from the super class to the singleton class
This helps hit inline method caches more frequently. Before this commit: ``` [aaron@TC ruby (trunk)]$ time ./ruby -v benchmark/bm_vm2_poly_singleton.rb ruby 2.4.0dev (2016-09-12 trunk 56141) [x86_64-darwin15] real 0m3.679s user 0m3.632s sys 0m0.022s ``` After this commit: ``` [aaron@TC ruby (trunk)]$ time ./ruby -v benchmark/bm_vm2_poly_singleton.rb ruby 2.4.0dev (2016-09-12 trunk 56141) [x86_64-darwin15] last_commit=Copy the serial number from the super class to the singleton class real 0m2.246s user 0m2.203s sys 0m0.020s ``` [Feature #12364] [ruby-core:75425] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56144 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'class.c')
-rw-r--r--class.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/class.c b/class.c
index 6c7dfa5..ce2ede5 100644
--- a/class.c
+++ b/class.c
@@ -1591,7 +1591,9 @@ singleton_class_of(VALUE obj)
klass = RBASIC(obj)->klass;
if (!(FL_TEST(klass, FL_SINGLETON) &&
rb_ivar_get(klass, id_attached) == obj)) {
+ rb_serial_t serial = RCLASS_SERIAL(klass);
klass = rb_make_metaclass(obj, klass);
+ RCLASS_SERIAL(klass) = serial;
}
if (OBJ_TAINTED(obj)) {