From 1fb616dac50969cef3f260ec9d899f2f980fca1d Mon Sep 17 00:00:00 2001
From: Gabor Liptak <gliptak@users.sourceforge.net>
Date: Sat, 29 Jan 2011 15:52:39 -0500
Subject: Update Handling Other Messages section in gen_server, gen_fsm,
 gen_events overviews

---
 system/doc/design_principles/fsm.xml | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'system/doc/design_principles/fsm.xml')

diff --git a/system/doc/design_principles/fsm.xml b/system/doc/design_principles/fsm.xml
index 7cdd62057b..c3e9027274 100644
--- a/system/doc/design_principles/fsm.xml
+++ b/system/doc/design_principles/fsm.xml
@@ -308,6 +308,11 @@ terminate(normal, _StateName, _StateData) ->
 handle_info({'EXIT', Pid, Reason}, StateName, StateData) ->
     ..code to handle exits here..
     {next_state, StateName1, StateData1}.</code>
+    <p>The code_change method also has to be implemented.</p>
+    <code type="none">
+code_change(OldVsn, StateName, StateData, Extra) ->
+    ..code to convert state (and more) during code change
+    {ok, NextStateName, NewStateData}</code>
   </section>
 </chapter>
 
-- 
cgit v1.2.3