prosody
a49ed9166820
util/events.lua

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util/events.lua @ 3500:a49ed9166820

util.events: Create new index on handler change instead of modifying existing one (this makes util.events fully reentrant).
author Waqas Hussain <waqas20@gmail.com>
date Fri, 17 Sep 2010 04:09:59 +0500
parent 3499:91c55ae31ef3
child 3501:90c18e0355af
comparison
equal deleted inserted replaced
3499:91c55ae31ef3 3500:a49ed9166820
16 function new() 16 function new()
17 local handlers = {}; 17 local handlers = {};
18 local event_map = {}; 18 local event_map = {};
19 local function _rebuild_index(event) -- TODO optimize index rebuilding 19 local function _rebuild_index(event) -- TODO optimize index rebuilding
20 local _handlers = event_map[event]; 20 local _handlers = event_map[event];
21 local index = handlers[event]; 21 local index = {};
22 if index then
23 for i=#index,1,-1 do index[i] = nil; end
24 else index = {}; handlers[event] = index; end
25 for handler in pairs(_handlers) do 22 for handler in pairs(_handlers) do
26 t_insert(index, handler); 23 t_insert(index, handler);
27 end 24 end
28 t_sort(index, function(a, b) return _handlers[a] > _handlers[b]; end); 25 t_sort(index, function(a, b) return _handlers[a] > _handlers[b]; end);
26 handlers[event] = index;
29 end; 27 end;
30 local function add_handler(event, handler, priority) 28 local function add_handler(event, handler, priority)
31 local map = event_map[event]; 29 local map = event_map[event];
32 if map then 30 if map then
33 map[handler] = priority or 0; 31 map[handler] = priority or 0;