--- old/src/share/vm/logging/logConfiguration.hpp	2015-11-05 12:23:43.490254882 +0900
+++ new/src/share/vm/logging/logConfiguration.hpp	2015-11-05 12:23:43.353252977 +0900
@@ -39,6 +39,7 @@
  private:
   static LogOutput**  _outputs;
   static size_t       _n_outputs;
+  static bool         _initialized;
 
   // Create a new output. Returns NULL if failed.
   static LogOutput* new_output(char* name, const char* options = NULL);
@@ -85,6 +86,13 @@
 
   // Prints usage help for command line log configuration.
   static void print_command_line_help(FILE* out);
+
+  static bool is_initialized() {
+    return _initialized;
+  }
+
+  // Rotates all LogOutput
+  static void rotate_all_outputs();
 };
 
 #endif // SHARE_VM_LOGGING_LOGCONFIGURATION_HPP