Module JoinTextProc.Async

module Async: sig .. end

Asynchronous producer interface.

The functions below all return means to control the child process and some producers connected to the forked process output channels, when instructed to do so.

type producer = string JoinCom.P.t

Producers of text lines

type t = {

`out : producer;`	`(*`	Connected to child process standard output	`*)`
`err : producer;`	`(*`	Connected to child process standard error	`*)`
`waitpid : Unix.process_status Join.chan Join.chan;`	`(*`	Invoke continuation argument when child process changes status.	`*)`
`kill : int -> unit;`	`(*`	Send (Unix) signal to child process	`*)`

}

Notice that out or err above can be empty producers when child process channels redirection is not commanded.

val command : string -> string array -> t

Analogous of JoinProc.command. Standard channels stdin, stdout, and stderr are the ones of the parent process. Accordingly, the out and err producers are empty producers.

val open_in : string -> string array -> t

Analogous of JoinProc.open_in. Standard output of child process is connected to the out producer.

val open_out : string -> string array -> producer -> t

Analogous of JoinProc.open_out. Standard input of child process is read from the third, producer, argument.

val open_in_out : string -> string array -> producer -> t

Analogous of JoinProc.open_in_out. Combination of JoinTextProc.Async.open_in and JoinTextProc.Async.open_out.

val open_full : string -> string array -> producer -> t

Analogous of JoinProc.open_full. Connect all three standard channels of the forked command to producers.