ALife.Creatur.Daemon

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

Documentation

data Job s

The work to be performed by a daemon.

Constructors

Job

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.

• task :: StateT s IO ()

  Operations to perform repeatedly while running.

• sleepTime :: Int

  Number of microseconds to sleep between invocations of task.

data CreaturDaemon p s

Constructors

CreaturDaemon

Fields

• daemon :: CreateDaemon p
• job :: Job s

simpleDaemon :: Job s -> s -> CreateDaemon ()

Creates a simple daemon to run a job. The daemon will run under the login name.

launch :: CreaturDaemon p s -> IO ()

launch daemon state creates a daemon, which invokes daemon. *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.

launchInteractive :: Job s -> s -> IO ()

requestShutdown :: IO ()