From 72b4833bc05da3dfb3b04a9b93d01e68d12db36e Mon Sep 17 00:00:00 2001
From: Charlie Somerville <charlie@charliesomerville.com>
Date: Thu, 24 Oct 2013 15:31:16 -0400
Subject: [PATCH] expose method state version too

---
 vm.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/vm.c b/vm.c
index b7f8c64ea2c73d..62cd0fd782be4f 100644
--- a/vm.c
+++ b/vm.c
@@ -2078,6 +2078,12 @@ ruby_vm_constant_state_version()
     return ULONG2NUM(ruby_constant_global_state_version);
 }
 
+static VALUE
+ruby_vm_method_state_version()
+{
+    return ULONG2NUM(ruby_method_global_state_version);
+}
+
 void
 Init_VM(void)
 {
@@ -2092,6 +2098,7 @@ Init_VM(void)
 
     /* method cache metrics */
     rb_define_singleton_method(rb_cRubyVM, "constant_state_version", ruby_vm_constant_state_version, 0);
+    rb_define_singleton_method(rb_cRubyVM, "method_state_version", ruby_vm_method_state_version, 0);
 
     /* ::VM::FrozenCore */
     fcore = rb_class_new(rb_cBasicObject);