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-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local ns_addtimer = require "net.server".addtimer;
local event = require "net.server".event;
local event_base = require "net.server".event_base;
local math_min = math.min
local math_huge = math.huge
local get_time = require "socket".gettime;
local t_insert = table.insert;
local pairs = pairs;
local type = type;
local data = {};
local new_data = {};
module "timer"
local _add_task;
if not event then
function _add_task(delay, callback)
local current_time = get_time();
delay = delay + current_time;
if delay >= current_time then
t_insert(new_data, {delay, callback});
else
local r = callback();
if r and type(r) == "number" then
return _add_task(r, callback);
end
end
end
ns_addtimer(function()
local current_time = get_time();
if #new_data > 0 then
for _, d in pairs(new_data) do
t_insert(data, d);
end
new_data = {};
end
local next_time = math_huge;
for i, d in pairs(data) do
local t, callback = d[1], d[2];
if t <= current_time then
data[i] = nil;
local r = callback(current_time);
if type(r) == "number" then
_add_task(r, callback);
next_time = math_min(next_time, r);
end
else
next_time = math_min(next_time, t - current_time);
end
end
return next_time;
end);
else
local EVENT_LEAVE = (event.core and event.core.LEAVE) or -1;
function _add_task(delay, callback)
local event_handle;
event_handle = event_base:addevent(nil, 0, function ()
local ret = callback();
if ret then
return 0, ret;
elseif event_handle then
return EVENT_LEAVE;
end
end
, delay);
end
end
add_task = _add_task;
return _M;
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