ALife.Creatur.Daemon

Provides a UNIX daemon to run an experiment using the Créatúr framework.

Documentation

data TaskConfig s

Task configuration.

Constructors

TaskConfig

Fields

onStartup :: s -> IO s

Operations to perform on startup.

onShutdown :: s -> IO ()

Operations to perform on shutdown.

onException :: s -> SomeException -> IO s

Operations to perform if an exception occurs.

run :: StateT s IO ()

Operations to perform repeatedly while running.

sleepTime :: Int

Number of microseconds to sleep between invocations of run.

data Daemon p s

Constructors

Daemon

Fields

daemon :: CreateDaemon p

task :: TaskConfig s

launch :: Daemon p s -> s -> IO ()

launch daemon state creates a daemon, which invokes task. *Note:* If user (in daemon) is Just "", the daemon will run under the login name. If user is Nothing, the daemon will run under the name of the executable file containing the daemon.

requestShutdown :: IO ()