prosody
bf9aba718c01
util/timer.lua

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util/timer.lua @ 5898:bf9aba718c01

util/timer: Re-set params when timer is rescheduled
author daurnimator <quae@daurnimator.com>
date Wed, 06 Nov 2013 12:56:18 -0500
parent 5880:11f14d44438e
child 6481:dbc72cd1332e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local indexedbheap = require "util.indexedbheap";
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10 local log = require "util.logger".init("timer");
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11 local server = require "net.server";
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12 local math_min = math.min
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13 local math_huge = math.huge
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14 local get_time = require "socket".gettime;
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15 local t_insert = table.insert;
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16 local pairs = pairs;
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17 local type = type;
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18 local debug_traceback = debug.traceback;
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19 local tostring = tostring;
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20 local xpcall = xpcall;
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21
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22 local data = {};
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23 local new_data = {};
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24
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25 module "timer"
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26
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27 local _add_task;
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28 if not server.event then
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29 function _add_task(delay, callback)
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30 local current_time = get_time();
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31 delay = delay + current_time;
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32 if delay >= current_time then
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33 t_insert(new_data, {delay, callback});
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34 else
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35 local r = callback(current_time);
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36 if r and type(r) == "number" then
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37 return _add_task(r, callback);
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38 end
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39 end
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40 end
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41
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42 server._addtimer(function()
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43 local current_time = get_time();
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44 if #new_data > 0 then
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45 for _, d in pairs(new_data) do
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46 t_insert(data, d);
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47 end
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48 new_data = {};
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49 end
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50
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51 local next_time = math_huge;
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52 for i, d in pairs(data) do
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53 local t, callback = d[1], d[2];
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54 if t <= current_time then
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55 data[i] = nil;
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56 local r = callback(current_time);
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57 if type(r) == "number" then
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58 _add_task(r, callback);
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59 next_time = math_min(next_time, r);
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60 end
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61 else
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62 next_time = math_min(next_time, t - current_time);
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63 end
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64 end
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65 return next_time;
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66 end);
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67 else
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68 local event = server.event;
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69 local event_base = server.event_base;
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70 local EVENT_LEAVE = (event.core and event.core.LEAVE) or -1;
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71
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72 function _add_task(delay, callback)
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73 local event_handle;
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74 event_handle = event_base:addevent(nil, 0, function ()
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75 local ret = callback(get_time());
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76 if ret then
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77 return 0, ret;
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78 elseif event_handle then
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79 return EVENT_LEAVE;
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80 end
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81 end
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82 , delay);
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83 end
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84 end
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85
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86 --add_task = _add_task;
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87
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88 local h = indexedbheap.create();
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89 local params = {};
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90 local next_time = nil;
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91 local _id, _callback, _now, _param;
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92 local function _call() return _callback(_now, _id, _param); end
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93 local function _traceback_handler(err) log("error", "Traceback[timer]: %s", debug_traceback(tostring(err), 2)); end
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94 local function _on_timer(now)
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95 local peek;
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96 while true do
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97 peek = h:peek();
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98 if peek == nil or peek > now then break; end
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99 local _;
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100 _, _callback, _id = h:pop();
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101 _now = now;
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102 _param = params[_id];
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103 params[_id] = nil;
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104 --item(now, id, _param); -- FIXME pcall
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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105 local success, err = xpcall(_call, _traceback_handler);
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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106 if success and type(err) == "number" then
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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107 h:insert(_callback, err + now, _id); -- re-add
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bf9aba718c01 util/timer: Re-set params when timer is rescheduled
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parents: 5880
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108 params[_id] = _param;
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615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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109 end
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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110 end
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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111 next_time = peek;
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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112 if peek ~= nil then
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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113 return peek - now;
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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114 end
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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115 end
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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116 function add_task(delay, callback, param)
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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117 local current_time = get_time();
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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118 local event_time = current_time + delay;
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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119
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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120 local id = h:insert(callback, event_time);
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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121 params[id] = param;
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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122 if next_time == nil or event_time < next_time then
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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123 next_time = event_time;
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parents: 5877
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124 _add_task(next_time - current_time, _on_timer);
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Waqas Hussain <waqas20@gmail.com>
parents: 5776
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125 end
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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126 return id;
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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127 end
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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128 function stop(id)
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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129 params[id] = nil;
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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130 return h:remove(id);
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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131 end
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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132 function reschedule(id, delay)
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
diff changeset
133 local current_time = get_time();
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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134 local event_time = current_time + delay;
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
diff changeset
135 h:reprioritize(id, delay);
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
diff changeset
136 if next_time == nil or event_time < next_time then
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
diff changeset
137 next_time = event_time;
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Waqas Hussain <waqas20@gmail.com>
parents: 5877
diff changeset
138 _add_task(next_time - current_time, _on_timer);
5877
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
diff changeset
139 end
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
diff changeset
140 return id;
615a0774e4cc util.timer: Updated to use util.indexedbheap to provide a more complete API. Timers can now be stopped or rescheduled. Callbacks are now pcall'd. Adding/removing timers from within timer callbacks works better. Optional parameter can be passed when creating timer which gets passed to callback, eliminating the need for closures in various timer uses. Timers are now much more lightweight.
Waqas Hussain <waqas20@gmail.com>
parents: 5776
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141 end
832
282ae70db19f Added util/timer.lua - a timer API
Waqas Hussain <waqas20@gmail.com>
parents:
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142
282ae70db19f Added util/timer.lua - a timer API
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parents:
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143 return _M;