Refactor some debug helpers

Author: st0012

lib/debug/session.rb

@@ -203,7 +203,7 @@ def session_server_main
     def process_event evt
       # variable `@internal_info` is only used for test
       tc, output, ev, @internal_info, *ev_args = evt
-      DEBUGGER__.debug_event(tc, ev, ev_args, direction: ">")
+      debug_event(tc, ev, ev_args)
       output.each{|str| @ui.puts str} if ev != :suspend
 
       case ev
@@ -1717,6 +1717,10 @@ def before_fork need_lock = true
     def after_fork_parent
       @ui.after_fork_parent
     end
+
+    def debug_event(*args)
+      DEBUGGER__.debug_event(*args, direction: ">")
+    end
   end
 
   class ProcessGroup

lib/debug/thread_client.rb

@@ -187,8 +187,12 @@ def generate_info
       { location: current_frame.location_str, line: current_frame.location.lineno }
     end
 
+    def debug_event(*args)
+      DEBUGGER__.debug_event(self, *args, direction: "<")
+    end
+
     def event! ev, *args
-      DEBUGGER__.debug_event(self, ev, args, direction: "<")
+      debug_event(ev, args)
       @q_evt << [self, @output, ev, generate_info, *args]
       @output = []
     end