add benchmark for Object

test/Benchmark/app/benchmark.rb

@@ -37,4 +37,7 @@ autorelease_pool { bm_rational }
 puts "*** Module ***"
 autorelease_pool { bm_module }
 
+puts "*** Object ***"
+autorelease_pool { bm_object }
+
 exit(0)

test/Benchmark/app/benchmark/object.rb

@@ -0,0 +1,18 @@
+class User
+  def initialize
+    @name = "foo"
+    @age  = 20
+  end
+end
+
+def bm_object
+  Benchmark.benchmark("", 30, "%r\n") do |x|
+    object_instance_eval(x)
+    object_instance_of(x)
+    object_instance_variable_get(x)
+    object_instance_variable_set(x)
+    object_is_a(x)
+    object_respond_to(x)
+    object_send(x)
+  end
+end

test/Benchmark/app/benchmark/object/instance_eval.rb

@@ -0,0 +1,8 @@
+def object_instance_eval(x)
+  obj = Object.new
+  x.report "instance_eval" do
+    2000000.times do
+      obj.instance_eval { }
+    end
+  end
+end

test/Benchmark/app/benchmark/object/instance_of.rb

@@ -0,0 +1,21 @@
+def object_instance_of(x)
+  obj = Object.new
+  x.report "instance_of Object" do
+    2000000.times do
+      obj.instance_of?(Object)
+    end
+  end
+
+  x.report "instance_of Fixnum" do
+    2000000.times do
+      1.instance_of?(Fixnum)
+    end
+  end
+
+  string = "foo"
+  x.report "instance_of String" do
+    2000000.times do
+      string.instance_of?(String)
+    end
+  end
+end

test/Benchmark/app/benchmark/object/instance_variable_get.rb

@@ -0,0 +1,9 @@
+def object_instance_variable_get(x)
+  user = User.new
+  x.report "instance_variable_get" do
+    1000000.times do
+      user.instance_variable_get(:@name)
+    end
+  end
+
+end

test/Benchmark/app/benchmark/object/instance_variable_set.rb

@@ -0,0 +1,9 @@
+def object_instance_variable_set(x)
+  user = User.new
+  x.report "instance_variable_set" do
+    1000000.times do
+      user.instance_variable_set(:@age, 42)
+    end
+  end
+
+end

test/Benchmark/app/benchmark/object/is_a.rb

@@ -0,0 +1,21 @@
+def object_is_a(x)
+  obj = Object.new
+  x.report "is_a? Object" do
+    2000000.times do
+      obj.is_a?(Object)
+    end
+  end
+
+  x.report "is_a? Fixnum" do
+    2000000.times do
+      1.is_a?(Fixnum)
+    end
+  end
+
+  string = "foo"
+  x.report "is_a? String" do
+    2000000.times do
+      string.is_a?(String)
+    end
+  end
+end

test/Benchmark/app/benchmark/object/respond_to.rb

@@ -0,0 +1,8 @@
+def object_respond_to(x)
+  obj = Object.new
+  x.report "respond_to" do
+    2000000.times do
+      obj.respond_to?(:nil?)
+    end
+  end
+end

test/Benchmark/app/benchmark/object/send.rb

@@ -0,0 +1,8 @@
+def object_send(x)
+  obj = Object.new
+  x.report "send" do
+    2000000.times do
+      obj.send(:nil?)
+    end
+  end
+end