Copyright	(c) 2012-2021 Amy de Buitléir
License	BSD-style
Maintainer	amy@nualeargais.ie
Stability	experimental
Portability	portable
Safe Haskell	None
Language	Haskell2010

ALife.Creatur.Daemon

Description

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

Synopsis

data Job s = Job {
- onStartup :: s -> IO s
- onShutdown :: s -> IO ()
- onException :: s -> SomeException -> IO s
- task :: StateT s IO ()
- sleepTime :: Int
}
data CreaturDaemon p s = CreaturDaemon {
- daemon :: CreateDaemon p
- job :: Job s
}
simpleDaemon :: Job s -> s -> CreateDaemon ()
launch :: CreaturDaemon p s -> IO ()
launchInteractive :: Job s -> s -> IO ()
requestShutdown :: IO ()

Documentation

data Job s Source #

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 Source #

Constructors

CreaturDaemon
Fields daemon :: CreateDaemon p job :: Job s

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

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

launch :: CreaturDaemon p s -> IO () Source #

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 () Source #

requestShutdown :: IO () Source #