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Re: How to communicate with a running external process with given PID?
From: |
Pascal J. Bourguignon |
Subject: |
Re: How to communicate with a running external process with given PID? |
Date: |
Sat, 20 Jul 2013 12:51:46 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux) |
Thorsten Jolitz <tjolitz@gmail.com> writes:
> Hi List,
>
> say I want to call another program (more exactly, another Lisp program
> that is not Emacs Lisp) from an Emacs Lisp program.
>
> My special requirement is that I don't want to start a new Emacs
> subprocess, but want to communicate with an existing (running) process.
> And there maybe several running instances of this program at the same
> time, so I want to communicate with one existing (running) process with
> a given PID.
>
> Now there is splendid support in Emacs for communicating with other
> programs, but always based on the assumption that Emacs starts and
> controls a new subprocess.
>
> There is chapter 37.12 "Accessing Other Processes" in the Elisp manual,
> and I can do successfully
>
> ,-------------------------
> | (process-attributes PID)
> `-------------------------
>
> to receive a lot of information about the process I want to communicate
> with.
>
> But what then? Where are the (e.g.) `process-send-string' or
> `process-send-region' functions for external processes I could use to
> communicate with my external program?
>
> I could run a server in the external lisp program and use a
> network-connection-object to send http-requests (e.g. with the help of
> emacs-request.el) via TCP - but that seems to be total overkill for my
> requirements.
>
> I just want to use a running external process with a given PID in a
> similar way I would use (a)synchronous processes created from Emacs with
> `call-process' or `start-process'. How can I do that?
>
> Maybe there is an obvious answer to this question that I don't see.
> Would be nice.
You need to read UNP.
http://www.unpbook.com/
--
__Pascal Bourguignon__ http://www.informatimago.com/
A bad day in () is better than a good day in {}.
You know you've been lisping too long when you see a recent picture of George
Lucas and think "Wait, I thought John McCarthy was dead!" -- Dalek_Baldwin
- Re: How to communicate with a running external process with given PID?,
Pascal J. Bourguignon <=
Re: How to communicate with a running external process with given PID?, Pascal J. Bourguignon, 2013/07/20
- Re: How to communicate with a running external process with given PID?, Thorsten Jolitz, 2013/07/20
- Message not available
- Re: How to communicate with a running external process with given PID?, Pascal J. Bourguignon, 2013/07/20
- Re: How to communicate with a running external process with given PID?, Thorsten Jolitz, 2013/07/22
- Re: How to communicate with a running external process with given PID?, Aurélien Aptel, 2013/07/22
- Re: How to communicate with a running external process with given PID?, Thorsten Jolitz, 2013/07/22
- Re: How to communicate with a running external process with given PID?, Aurélien Aptel, 2013/07/22