Control.Monad.Class.MonadTimer

Provides classes to handle delays and timeouts which generalised base API to both IO and IOSim.

Documentation

class Monad m => MonadDelay m where

A typeclass to delay current thread.

Methods

threadDelay :: Int -> m ()

Suspends the current thread for a given number of microseconds (GHC only).

See threadDelay.

Instances

MonadDelay IO

Defined in Control.Monad.Class.MonadTimer

Methods

threadDelay :: Int -> IO ()

MonadDelay m => MonadDelay (ReaderT r m)

Defined in Control.Monad.Class.MonadTimer

Methods

threadDelay :: Int -> ReaderT r m ()

class (MonadDelay m, MonadSTM m) => MonadTimer m where

A typeclass providing utilities for timeouts.

Methods

registerDelay :: Int -> m (TVar m Bool)

See registerDelay.

timeout :: Int -> m a -> m (Maybe a)

See timeout.

Instances

MonadTimer IO

Defined in Control.Monad.Class.MonadTimer

Methods

registerDelay :: Int -> IO (TVar IO Bool)

timeout :: Int -> IO a -> IO (Maybe a)

MonadTimer m => MonadTimer (ReaderT r m)

Defined in Control.Monad.Class.MonadTimer

Methods

registerDelay :: Int -> ReaderT r m (TVar (ReaderT r m) Bool)

timeout :: Int -> ReaderT r m a -> ReaderT r m (Maybe a)