mirror of
https://github.com/bjc/prosody.git
synced 2025-04-03 21:27:38 +03:00
78 lines
2 KiB
Lua
78 lines
2 KiB
Lua
-- 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 indexedbheap = require "util.indexedbheap";
|
|
local log = require "util.logger".init("timer");
|
|
local server = require "net.server";
|
|
local get_time = require "socket".gettime;
|
|
local type = type;
|
|
local debug_traceback = debug.traceback;
|
|
local tostring = tostring;
|
|
local xpcall = xpcall;
|
|
|
|
module "timer"
|
|
|
|
local _add_task = server.add_task;
|
|
--add_task = _add_task;
|
|
|
|
local h = indexedbheap.create();
|
|
local params = {};
|
|
local next_time = nil;
|
|
local _id, _callback, _now, _param;
|
|
local function _call() return _callback(_now, _id, _param); end
|
|
local function _traceback_handler(err) log("error", "Traceback[timer]: %s", debug_traceback(tostring(err), 2)); end
|
|
local function _on_timer(now)
|
|
local peek;
|
|
while true do
|
|
peek = h:peek();
|
|
if peek == nil or peek > now then break; end
|
|
local _;
|
|
_, _callback, _id = h:pop();
|
|
_now = now;
|
|
_param = params[_id];
|
|
params[_id] = nil;
|
|
--item(now, id, _param); -- FIXME pcall
|
|
local success, err = xpcall(_call, _traceback_handler);
|
|
if success and type(err) == "number" then
|
|
h:insert(_callback, err + now, _id); -- re-add
|
|
params[_id] = _param;
|
|
end
|
|
end
|
|
next_time = peek;
|
|
if peek ~= nil then
|
|
return peek - now;
|
|
end
|
|
end
|
|
function add_task(delay, callback, param)
|
|
local current_time = get_time();
|
|
local event_time = current_time + delay;
|
|
|
|
local id = h:insert(callback, event_time);
|
|
params[id] = param;
|
|
if next_time == nil or event_time < next_time then
|
|
next_time = event_time;
|
|
_add_task(next_time - current_time, _on_timer);
|
|
end
|
|
return id;
|
|
end
|
|
function stop(id)
|
|
params[id] = nil;
|
|
return h:remove(id);
|
|
end
|
|
function reschedule(id, delay)
|
|
local current_time = get_time();
|
|
local event_time = current_time + delay;
|
|
h:reprioritize(id, delay);
|
|
if next_time == nil or event_time < next_time then
|
|
next_time = event_time;
|
|
_add_task(next_time - current_time, _on_timer);
|
|
end
|
|
return id;
|
|
end
|
|
|
|
return _M;
|