From: "Štěpán Němec" <stepnem@gmail.com>
To: Perry Smith <pedzsan@gmail.com>
Cc: help-gnu-emacs List <help-gnu-emacs@gnu.org>
Subject: Re: waiting for asynchronous processes
Date: Sun, 16 Oct 2011 00:24:52 +0200 [thread overview]
Message-ID: <87hb39zydn.fsf@gmail.com> (raw)
In-Reply-To: <C218972F-12B5-4044-BA25-1ECC959E9A34@gmail.com> (Perry Smith's message of "Sat, 15 Oct 2011 12:20:44 -0500")
On Sat, 15 Oct 2011 19:20:44 +0200
Perry Smith wrote:
> I started looking for a built in way to wait for an asynchronous command to
> complete and discovered that I had written one long long time ago in a galaxy
> far far away.
>
>> (defun wait-for-async-process ( proc )
>> "Wait for PROC to finish"
>> (while (null (eq (process-status proc) 'exit))
>> (accept-process-output)))
Looks like a terrible hack to me.
> I went ahead and looked for something like it in the distribution but didn't see it.
>
> I'm curious if I overlooked it.
I doubt it. If you want to wait for the process in the way you seem to
want to wait for it, why don't you just use a synchronous process to
begin with? If you _do_ want the non-waiting advantage of asynchronous
processes, the usual way to handle state changes (s.a. when the process
finishes) is to use sentinels, see e.g. (info "(elisp)Sentinels").
--
Štěpán
next prev parent reply other threads:[~2011-10-15 22:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-15 17:20 waiting for asynchronous processes Perry Smith
2011-10-15 22:24 ` Štěpán Němec [this message]
2011-10-16 0:17 ` Perry Smith
2011-10-16 1:15 ` Štěpán Němec
2011-10-16 1:49 ` Perry Smith
2011-10-16 9:16 ` Štěpán Němec
2011-10-16 12:49 ` Perry Smith
2011-10-16 9:21 ` Thien-Thi Nguyen
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