2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local indexedbheap = require "util.indexedbheap";
10 local log = require "util.logger".init("timer");
11 local server = require "net.server";
12 local math_min = math.min
13 local math_huge = math.huge
14 local get_time = require "socket".gettime;
15 local t_insert = table.insert;
18 local debug_traceback = debug.traceback;
19 local tostring = tostring;
20 local xpcall = xpcall;
28 if not server.event then
29 function _add_task(delay, callback)
30 local current_time = get_time();
31 delay = delay + current_time;
32 if delay >= current_time then
33 t_insert(new_data, {delay, callback});
35 local r = callback(current_time);
36 if r and type(r) == "number" then
37 return _add_task(r, callback);
42 server._addtimer(function()
43 local current_time = get_time();
45 for _, d in pairs(new_data) do
51 local next_time = math_huge;
52 for i, d in pairs(data) do
53 local t, callback = d[1], d[2];
54 if t <= current_time then
56 local r = callback(current_time);
57 if type(r) == "number" then
58 _add_task(r, callback);
59 next_time = math_min(next_time, r);
62 next_time = math_min(next_time, t - current_time);
68 local event = server.event;
69 local event_base = server.event_base;
70 local EVENT_LEAVE = (event.core and event.core.LEAVE) or -1;
72 function _add_task(delay, callback)
74 event_handle = event_base:addevent(nil, 0, function ()
75 local ret = callback(get_time());
78 elseif event_handle then
86 --add_task = _add_task;
88 local h = indexedbheap.create();
90 local next_time = nil;
91 local _id, _callback, _now, _param;
92 local function _call() return _callback(_now, _id, _param); end
93 local function _traceback_handler(err) log("error", "Traceback[timer]: %s", debug_traceback(tostring(err), 2)); end
94 local function _on_timer(now)
98 if peek == nil or peek > now then break; end
100 _, _callback, _id = h:pop();
102 _param = params[_id];
104 --item(now, id, _param); -- FIXME pcall
105 local success, err = xpcall(_call, _traceback_handler);
106 if success and type(err) == "number" then
107 h:insert(_callback, err + now, _id); -- re-add
108 params[_id] = _param;
116 function add_task(delay, callback, param)
117 local current_time = get_time();
118 local event_time = current_time + delay;
120 local id = h:insert(callback, event_time);
122 if next_time == nil or event_time < next_time then
123 next_time = event_time;
124 _add_task(next_time - current_time, _on_timer);
132 function reschedule(id, delay)
133 local current_time = get_time();
134 local event_time = current_time + delay;
135 h:reprioritize(id, delay);
136 if next_time == nil or event_time < next_time then
137 next_time = event_time;
138 _add_task(next_time - current_time, _on_timer);