diff options
-rw-r--r-- | ChangeLog | 6 | ||||
-rw-r--r-- | benchmark/bm_vm2_poly_singleton.rb | 14 | ||||
-rw-r--r-- | class.c | 2 |
3 files changed, 22 insertions, 0 deletions
@@ -1,3 +1,9 @@ +Tue Sep 13 00:39:47 2016 Aaron Patterson <tenderlove@ruby-lang.org> + + * class.c (singleton_class_of): Copy superclass serial number to + singleton class. This improves singleton class IMC hit rates. + [Feature #12364] [ruby-core:75425] + Mon Sep 12 13:46:23 2016 Anton Davydov <mail@davydovanton.com> * lib/uri/mailto.rb: Removed needless `return` and use `.`` instead of `::` diff --git a/benchmark/bm_vm2_poly_singleton.rb b/benchmark/bm_vm2_poly_singleton.rb new file mode 100644 index 0000000000..0dba4320c4 --- /dev/null +++ b/benchmark/bm_vm2_poly_singleton.rb @@ -0,0 +1,14 @@ +class C1 + def m; 1; end +end + +o1 = C1.new +o2 = C1.new +o2.singleton_class + +i = 0 +while i<6_000_000 # benchmark loop 2 + o = (i % 2 == 0) ? o1 : o2 + o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m + i += 1 +end @@ -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)) { |