package dune-private-libs

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Start, stop and synchronize with a daemon

The daemonize function will fork a daemon running the given function, guaranteeing that at most one instance will run at any given time. The daemon has to call a given callback to indicate that it has successfully started, unlocking all other potential start attempts. This callback can be given a payload that can be retrieved by the starting process and other start attempts - e.g. the endpoint to contact the damon on.

type status =

| Started of string * Pid.t
(*
The daemon was started in the background with the given payload and pid
*)
| Already_running of string * Pid.t
(*
The daemon is already running in the background with the given payload and pid
*)
| Finished
(*
The daemon was run synchronously and exited.
*)

Result of a daemonization

val daemonize : 
  ?workdir:Path.t ->
  ?foreground:bool ->
  Path.t ->
  ((string -> unit) -> unit) ->
  (status, string) Result.t

val stop : Path.t -> (unit, string) Result.t