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{- git-annex assistant daemon status
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-}
module Assistant.DaemonStatus where
import Common.Annex
import Control.Concurrent
import System.Posix.Types
data DaemonStatus = DaemonStatus
-- False when the daemon is performing its startup scan
{ scanComplete :: Bool
-- Time when a previous process of the daemon was running ok
, lastRunning :: Maybe EpochTime
}
type DaemonStatusHandle = MVar DaemonStatus
newDaemonStatus :: DaemonStatus
newDaemonStatus = DaemonStatus
{ scanComplete = False
, lastRunning = Nothing
}
startDaemonStatus :: IO DaemonStatusHandle
startDaemonStatus = newMVar newDaemonStatus
getDaemonStatus :: DaemonStatusHandle -> Annex DaemonStatus
getDaemonStatus = liftIO . readMVar
modifyDaemonStatus :: DaemonStatusHandle -> (DaemonStatus -> DaemonStatus) -> Annex ()
modifyDaemonStatus status a = liftIO $ modifyMVar_ status (return . a)
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