Safe Haskell	Safe-Inferred
Language	Haskell2010

Control.AutoUpdate.Internal

Contents

Debugging

Synopsis

data UpdateState a = UpdateState {
- usUpdateAction_ :: a -> IO a
- usLastResult_ :: IORef a
- usIntervalMicro_ :: Int
- usTimeHasCome_ :: TVar Bool
- usDeleteTimeout_ :: IORef (IO ())
}
mkClosableAutoUpdate :: UpdateSettings a -> IO (IO a, IO ())
mkClosableAutoUpdate' :: UpdateSettings a -> IO (IO a, IO (), UpdateState a)

Debugging

data UpdateState a #

Constructors

UpdateState
Fields usUpdateAction_ :: a -> IO a usLastResult_ :: IORef a usIntervalMicro_ :: Int usTimeHasCome_ :: TVar Bool usDeleteTimeout_ :: IORef (IO ())

mkClosableAutoUpdate :: UpdateSettings a -> IO (IO a, IO ()) #

>>> iref <- newIORef (0 :: Int)
>>> action = modifyIORef iref (+ 1) >> readIORef iref
>>> (getValue, closeState) <- mkClosableAutoUpdate $ defaultUpdateSettings { updateFreq = 200_000, updateAction = action }
>>> getValue
1
>>> threadDelay 100_000 >> getValue
1
>>> threadDelay 200_000 >> getValue
2
>>> closeState

mkClosableAutoUpdate' :: UpdateSettings a -> IO (IO a, IO (), UpdateState a) #

provide UpdateState for debugging