diff options
Diffstat (limited to 'util/watchdog.lua')
| -rw-r--r-- | util/watchdog.lua | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/util/watchdog.lua b/util/watchdog.lua index 516e60e4..407028a5 100644 --- a/util/watchdog.lua +++ b/util/watchdog.lua @@ -1,6 +1,5 @@ local timer = require "util.timer"; local setmetatable = setmetatable; -local os_time = os.time; local _ENV = nil; -- luacheck: std none @@ -9,27 +8,35 @@ local watchdog_methods = {}; local watchdog_mt = { __index = watchdog_methods }; local 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); + local watchdog = setmetatable({ + timeout = timeout; + callback = callback; + timer_id = nil; + }, watchdog_mt); + + watchdog:reset(); -- Kick things off + return watchdog; end -function watchdog_methods:reset() - self.last_reset = os_time(); +function watchdog_methods:reset(new_timeout) + if new_timeout then + self.timeout = new_timeout; + end + if self.timer_id then + timer.reschedule(self.timer_id, self.timeout+1); + else + self.timer_id = timer.add_task(self.timeout+1, function () + return self:callback(); + end); + end end function watchdog_methods:cancel() - self.last_reset = nil; + if self.timer_id then + timer.stop(self.timer_id); + self.timer_id = nil; + end end return { |