--- old/src/share/vm/gc_interface/gcCause.hpp	2015-05-07 13:17:51.401843182 -0700
+++ new/src/share/vm/gc_interface/gcCause.hpp	2015-05-07 13:17:51.293843186 -0700
@@ -77,6 +77,10 @@
     _last_gc_cause
   };
 
+  inline static bool is_system_gc(GCCause::Cause cause) {
+    return (cause == GCCause::_java_lang_system_gc);
+  }
+
   inline static bool is_user_requested_gc(GCCause::Cause cause) {
     return (cause == GCCause::_java_lang_system_gc ||
             cause == GCCause::_jvmti_force_gc);