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From: Henrik Frisk <frisk.h@gmail.com>
Date: Wed, 18 Aug 2021 07:41:11 +0200
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Subject: Re: Build agenda asynchronously
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Content-Type: text/plain; charset="UTF-8"

Den tis 17 aug. 2021 kl 08:54 skrev Dr. Arne Babenhauserheide <
arne_bab@web.de>:

>
> Tim Cross <theophilusx@gmail.com> writes:
>
> > Emacs' support for asynchronous operations is at best primitive. There
> > is built-in support for calling processes asynchonously and
> > there is some other development work to set the stage for adding threads,
> > but I think general asynchronous processing inside Emacs is a long way
> > off. A lot of how Emacs lisp works fundamentally lacks the low level
> > control structures necessary to make data structures and operations on
> > those structures thread safe. This means you have to work at a very low
> > level in order to ensure code is thread safe and that simply isn't
> > practical. Even defining the basic model for an asynchronous emacs lisp
> > is non-trivial and once you have the model, you ahve to implement it.
>
> Maybe it could be possible to fire up a second Emacs and retrieve the
> agenda-buffer?
>
> This is what I do for commands like exporting the agenda which can take a
while with the -nw flag, but that is of course unsatisfactory for most use
cases.

/Henrik

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Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr"><div dir=3D"ltr">Den tis 17 aug. 2021 kl 08:54 skrev Dr. A=
rne Babenhauserheide &lt;<a href=3D"mailto:arne_bab@web.de">arne_bab@web.de=
</a>&gt;:<br></div><div class=3D"gmail_quote"><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,20=
4);padding-left:1ex"><br>
Tim Cross &lt;<a href=3D"mailto:theophilusx@gmail.com" target=3D"_blank">th=
eophilusx@gmail.com</a>&gt; writes:<br>
<br>
&gt; Emacs&#39; support for asynchronous operations is at best primitive. T=
here<br>
&gt; is built-in support for calling processes asynchonously and<br>
&gt; there is some other development work to set the stage for adding threa=
ds,<br>
&gt; but I think general asynchronous processing inside Emacs is a long way=
<br>
&gt; off. A lot of how Emacs lisp works fundamentally lacks the low level<b=
r>
&gt; control structures necessary to make data structures and operations on=
<br>
&gt; those structures thread safe. This means you have to work at a very lo=
w<br>
&gt; level in order to ensure code is thread safe and that simply isn&#39;t=
<br>
&gt; practical. Even defining the basic model for an asynchronous emacs lis=
p<br>
&gt; is non-trivial and once you have the model, you ahve to implement it.<=
br>
<br>
Maybe it could be possible to fire up a second Emacs and retrieve the<br>
agenda-buffer?<br>
<br></blockquote><div>This is what I do for commands like exporting the age=
nda which can take a while with the -nw flag, but that is of course unsatis=
factory for most use cases.</div><div><br></div><div>/Henrik<br></div></div=
></div>

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