Safe Haskell	Safe-Inferred
Language	Haskell98

Keter.Conduit.Process.Unix

Contents

Synopsis

Process tracking

Ensure that child processes are killed, regardless of how the parent process exits.

The technique used here is:

Create a pipe.
Fork a new child process that listens on the pipe.
In the current process, send updates about processes that should be auto-killed.
When the parent process dies, listening on the pipe in the child process will get an EOF.
When the child process receives that EOF, it kills all processes it was told to auto-kill.

This code was originally written for Keter, but was moved to unix-process conduit in the 0.2.1 release.

Types

Represents the child process which handles process cleanup.

Since 0.2.1

Fork off the child cleanup process.

This will ideally only be run once for your entire application.

Since 0.2.1

Abstract type containing information on a process which will be restarted.

Arguments

:: (MonadUnliftIO m, MonadLogger m)
=> ProcessTracker
-> Maybe ByteString	setuid
-> ByteString	executable
-> ByteString	working directory
-> [ByteString]	command line parameter
-> [(ByteString, ByteString)]	environment
-> (ByteString -> IO ())
-> (ExitCode -> IO Bool)	should we restart?
-> m MonitoredProcess

Run the given command, restarting if the process dies.

Terminate the process and prevent it from being restarted.