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<p>sorry, forgot to post on the list.<br>
</p>
<div class="moz-forward-container">-------- Forwarded Message
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<td>Re: [PD] pdmax - broken pipe in macos?</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date: </th>
<td>Wed, 17 Nov 2021 16:09:32 +0100</td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">From: </th>
<td>Christof Ressi <a class="moz-txt-link-rfc2396E" href="mailto:info@christofressi.com"><info@christofressi.com></a></td>
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<th valign="BASELINE" nowrap="nowrap" align="RIGHT">To: </th>
<td>Lucas Cordiviola <a class="moz-txt-link-rfc2396E" href="mailto:lucarda27@hotmail.com"><lucarda27@hotmail.com></a></td>
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<p>The white space issue should have been fixed a while ago:
<a class="moz-txt-link-freetext"
href="https://github.com/pure-data/pure-data/commit/09fae95c21ae513e7f76127b313c1bc950e77dbf"
moz-do-not-send="true">https://github.com/pure-data/pure-data/commit/09fae95c21ae513e7f76127b313c1bc950e77dbf</a></p>
<p>Christof<br>
</p>
<div class="moz-cite-prefix">On 17.11.2021 15:49, Lucas Cordiviola
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:DS7PR10MB4845AC3A6B0868440C30A02DA69A9@DS7PR10MB4845.namprd10.prod.outlook.com">
<meta http-equiv="Content-Type" content="text/html;
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<p>This is probably unrelated but worth trying:<br>
<br>
When you get "broken pipe" did it worked in the first place?.
i.e it was running and you got the error or you get the error
as son as you start it?<br>
<br>
If you got it as soon as started it could "probably" be that
there's "white space" somewhere in Pd's path? <br>
</p>
<p><br>
</p>
<p><br>
--<br>
</p>
<pre class="moz-signature" cols="72">Mensaje telepatico asistido por maquinas.</pre>
<div class="moz-cite-prefix">On 11/17/2021 11:36 AM, João Pais
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAN46m5ot3m5cdt1nXcqQnu232DLc3M0U94rHy0-q68Zd55a6WA@mail.gmail.com">
<div dir="ltr">
<div dir="ltr">:) I do work on windows, but this issue
happens only with macOs (which I don't have at home, and
maybe now and then would be able to get access to).
<div><br>
</div>
</div>
I can try to have a look, next time I'm near a mac computer.
<div>As my past experience following build instructions is
close to 90% unsuccess rate - because something is missing
in the instructions -, any time I see an error I just
abort the whole process and don't try it anymore. It's
usually too much effort and no practical benefit.<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr"><br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>D'oh. I don't know why I though Joao was on
Windows... Thanks for the correction!</p>
<p>Note that lldb is the clang debugger and it works
slightly different than GDB. But you can do the
same things.<br>
</p>
<div>On 17.11.2021 15:07, Lucas Cordiviola wrote:<br>
</div>
<blockquote type="cite">
<p>@Christof,<br>
<br>
I think Joao is needing the *macOS* pdmax.<br>
<br>
@Joao,<br>
<br>
Everything that Christof said applies if you
follow the macOS part:<br>
<br>
<a
href="https://github.com/pure-data/pure-data/blob/master/INSTALL.txt"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://github.com/pure-data/pure-data/blob/master/INSTALL.txt</a><br>
<br>
you just need to install xcode with this command
on a terminal:<br>
<br>
xcode-select --install<br>
<br>
macOS debugger is included and its called (and
invoked with) "lldb".<br>
<br>
I used it one or two times only. I'm not a mac
user.</p>
<p><br>
</p>
<p>--<br>
</p>
<pre cols="72">Mensaje telepatico asistido por maquinas.</pre>
<div>On 11/17/2021 10:32 AM, Christof Ressi wrote:<br>
</div>
<blockquote type="cite">
<p>You would have to build the pdmax external
from source with debug symbols to get
meaningful information in the debugger. This
means you would need to setup Msys2, as
described in the "Windows" section in <a
href="https://github.com/pure-data/pure-data/blob/master/INSTALL.txt"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://github.com/pure-data/pure-data/blob/master/INSTALL.txt</a>.</p>
<p>Actually, if the aim is to only get a
stacktrace, it is not necessary to install a
graphical frontend for GDB, you can also run
GDB from the command line.<br>
</p>
<p>I you never compiled somthing from source it
can be a bit overwhelming at first, but it's a
valuable skill to have. There are a few
Windows people on the list who can help you
out (including myself).</p>
<p>So I would say it's not trivial, but also not
impossible :-)</p>
<p>---<br>
</p>
<p>That's what I'm doing to debug subprocesses
(I also needed to do this with [vstplugin~] a
few times):<br>
</p>
<p>1) run Pd with DSP off and start the
subprocess (here: [pd~ start()</p>
<p>2) find the PID of the subprocess, e.g. with
"tasklist | grep <name>" or with
ProcessExplorer</p>
<p>3) attach to the subprocess; terminal: <a
href="https://stackoverflow.com/questions/14370972/how-to-attach-a-process-in-gdb"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">https://stackoverflow.com/questions/14370972/how-to-attach-a-process-in-gdb</a>;
Qt Creator: "Start Debuggin" -> "Attach to
Running Application"</p>
<p>4) turn on DSP and wait for the subprocess to
crash<br>
</p>
<p>If the subprocess crashes immediately even
with DSP turned off, things are a bit harder.</p>
<p>---</p>
<p>If you can build pdmax with Visual Studio (I
don't know if this is supported?) then things
are even easier because VS has a very good
built-in graphical debugger that can also
attach to running applications.<br>
</p>
<p>Christof<br>
</p>
<div>On 17.11.2021 14:04, João Pais wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">is that something a "normal
user" like me (someone that only uses the
surface of the software) can do, or it has
to do with C or any other
custom compiled/prepared versions?</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, 17
Nov 2021 at 01:06, Christof Ressi <<a
href="mailto:info@christofressi.com"
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">info@christofressi.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">You can
attach GDB to a running or even a
not-yet-running application. <br>
When that application crashes, you get a
backtrace. That's how I found <br>
the crash in the [pd~] subprocess.<br>
<br>
Personally, I use Qt Creator because it
has a nice graphical front-end <br>
for GDB where I can easily step through
functions while looking at the <br>
code, watch local variables, etc.<br>
<br>
Christof<br>
<br>
On 17.11.2021 00:49, Miller Puckette via
Pd-list wrote:<br>
> If by any chance you're using pd 0.52
(test version) then I think<br>
> it can crash when used as a
subprocess (this should be fixed for the
next<br>
> test release). If you're using Pd
0.51-4 the problem is something else.<br>
><br>
> The "broken pipe" message means the
subprocess died suddenly for some reason.<br>
> But I can't think of an easy way to
figure out what killed it.<br>
><br>
> cheers<br>
> Miller<br>
><br>
> On Sat, Nov 06, 2021 at 08:45:28PM
+0100, João Pais wrote:<br>
>> Hello list,<br>
>><br>
>> I have a max patch with pd inside
through the pd~ object. But I'm getting<br>
>> the "broken pipe" error in some
cases in a mac, such as:<br>
>><br>
>> - in a compiled standalone it
usually works<br>
>><br>
>> - in the original patch it
doesn't<br>
>><br>
>> - both patches were made in the
same system, with the latest pdmax and pd<br>
>> versions were used. I'm not sure
anymore which max version or macos system<br>
>> was used to compile the
standalone, if that's important (it was
either max 7<br>
>> or 8).<br>
>><br>
>> I don't have access to a mac
myself, but the system where it was tested
was<br>
>> a 11.6, with Max 8. It seems to
me that in some systems it works, and in<br>
>> other it doesn't - but I don't
have enough hard data to prove it.<br>
>><br>
>> Best,<br>
>><br>
>> Joao<br>
>><br>
>><br>
>><br>
>><br>
>>
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