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util/watchdog.lua @ 5915:e6fed1d80116
Back out 1b0ac7950129, as SSLv3 appears to still be in moderate use on the network. Also, although obsolete, SSLv3 isn't documented to have any weaknesses that TLS 1.0 (the most common version used today) doesn't also have. Get your act together clients!
author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 12 Nov 2013 02:13:01 +0000 |
parent | 4891:189cfe565d03 |
child | 6777:5de6b93d0190 |
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local timer = require "util.timer"; local setmetatable = setmetatable; local os_time = os.time; module "watchdog" local watchdog_methods = {}; local watchdog_mt = { __index = watchdog_methods }; function new(timeout, callback) local watchdog = setmetatable({ timeout = timeout, last_reset = os_time(), callback = callback }, watchdog_mt); timer.add_task(timeout+1, function (current_time) local last_reset = watchdog.last_reset; if not last_reset then return; end local time_left = (last_reset + timeout) - current_time; if time_left < 0 then return watchdog:callback(); end return time_left + 1; end); return watchdog; end function watchdog_methods:reset() self.last_reset = os_time(); end function watchdog_methods:cancel() self.last_reset = nil; end return _M;