* benchmark/bm_vm1_gc_wb_ary(_promoted).rb: separate fastpath and

  slowpath for WB.
  Before this change bm_vm1_gc_wb_ary.rb tried to check the performance
  for WB slowpath (making a reference from oldobj to newobj). However,
  from Ruby 2.2, 3 GCs are needed to promote new objects because
  only 3 age objects are promted objects.
  To compare fastpath and slowpath, introduce new "promoted" version
  benchmark.
  bm_vm1_gc_wb_ary.rb is for fastpath and
  bm_vm1_gc_wb_ary_promoted.rb is for slowpath.
* benchmark/bm_vm1_gc_wb_obj(_promtoed).rb: ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49985 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 14 insertions, 0 deletions

diff --git a/benchmark/bm_vm1_gc_wb_ary_promoted.rb b/benchmark/bm_vm1_gc_wb_ary_promoted.rb
new file mode 100644
index 0000000000..612ec9f888
--- /dev/null
+++ b/benchmark/bm_vm1_gc_wb_ary_promoted.rb
@@ -0,0 +1,14 @@
+long_lived = []
+
+if RUBY_VERSION > "2.2.0"
+  3.times{ GC.start(immediate_mark: false, lazy_sweep: false) }
+elsif
+  GC.start
+end
+
+i = 0
+short_lived = ''
+while i<30_000_000 # while loop 1
+  long_lived[0] = short_lived # write barrier
+  i+=1
+end