prosody
352cd61e2682
util/watchdog.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/watchdog.lua @ 4638:352cd61e2682

modulemanager: Allow loading a module onto "*" (part-fixes #228)
author Matthew Wild <mwild1@gmail.com>
date Sat, 21 Apr 2012 20:00:30 +0100
parent 4401:0ed617f58404
child 4891:189cfe565d03
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4401
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 local timer = require "util.timer";
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
2 local setmetatable = setmetatable;
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
3 local os_time = os.time;
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
5 module "watchdog"
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
7 local watchdog_methods = {};
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8 local watchdog_mt = { __index = watchdog_methods };
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
10 function new(timeout, callback)
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
11 local watchdog = setmetatable({ timeout = timeout, last_reset = os_time(), callback = callback }, watchdog_mt);
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 timer.add_task(timeout+1, function (current_time)
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 local last_reset = watchdog.last_reset;
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
14 if not last_reset then
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
15 return;
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16 end
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 local time_left = (last_reset + timeout) - current_time;
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 if time_left < 0 then
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19 return watchdog.callback();
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20 end
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 return time_left + 1;
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
22 end);
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
23 return watchdog;
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
24 end
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
25
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
26 function watchdog_methods:reset()
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
27 self.last_reset = os_time();
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
28 end
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
29
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
30 function watchdog_methods:cancel()
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
31 self.last_reset = nil;
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
32 end
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
33
0ed617f58404 util.watchdog: Watchdog timer library
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
34 return _M;