sorry, forgot to post on the list.
-------- Forwarded Message --------
Subject: Re: [PD] pdmax - broken pipe in macos?
Date: Wed, 17 Nov 2021 16:09:32 +0100
From: Christof Ressi <[email protected]>
To: Lucas Cordiviola <[email protected]>
The white space issue should have been fixed a while ago:
https://github.com/pure-data/pure-data/commit/09fae95c21ae513e7f76127b313c1bc950e77dbf
Christof
On 17.11.2021 15:49, Lucas Cordiviola wrote:
This is probably unrelated but worth trying:
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?
If you got it as soon as started it could "probably" be that there's
"white space" somewhere in Pd's path?
--
Mensaje telepatico asistido por maquinas.
On 11/17/2021 11:36 AM, João Pais wrote:
:) 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).
I can try to have a look, next time I'm near a mac computer.
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.
D'oh. I don't know why I though Joao was on Windows... Thanks for
the correction!
Note that lldb is the clang debugger and it works slightly
different than GDB. But you can do the same things.
On 17.11.2021 15:07, Lucas Cordiviola wrote:
@Christof,
I think Joao is needing the *macOS* pdmax.
@Joao,
Everything that Christof said applies if you follow the macOS part:
https://github.com/pure-data/pure-data/blob/master/INSTALL.txt
you just need to install xcode with this command on a terminal:
xcode-select --install
macOS debugger is included and its called (and invoked with) "lldb".
I used it one or two times only. I'm not a mac user.
--
Mensaje telepatico asistido por maquinas.
On 11/17/2021 10:32 AM, Christof Ressi wrote:
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
https://github.com/pure-data/pure-data/blob/master/INSTALL.txt.
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.
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).
So I would say it's not trivial, but also not impossible :-)
---
That's what I'm doing to debug subprocesses (I also needed to
do this with [vstplugin~] a few times):
1) run Pd with DSP off and start the subprocess (here: [pd~ start()
2) find the PID of the subprocess, e.g. with "tasklist | grep
<name>" or with ProcessExplorer
3) attach to the subprocess; terminal:
https://stackoverflow.com/questions/14370972/how-to-attach-a-process-in-gdb;
Qt Creator: "Start Debuggin" -> "Attach to Running Application"
4) turn on DSP and wait for the subprocess to crash
If the subprocess crashes immediately even with DSP turned off,
things are a bit harder.
---
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.
Christof
On 17.11.2021 14:04, João Pais wrote:
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?
On Wed, 17 Nov 2021 at 01:06, Christof Ressi
<[email protected]> wrote:
You can attach GDB to a running or even a not-yet-running
application.
When that application crashes, you get a backtrace. That's
how I found
the crash in the [pd~] subprocess.
Personally, I use Qt Creator because it has a nice
graphical front-end
for GDB where I can easily step through functions while
looking at the
code, watch local variables, etc.
Christof
On 17.11.2021 00:49, Miller Puckette via Pd-list wrote:
> If by any chance you're using pd 0.52 (test version)
then I think
> it can crash when used as a subprocess (this should be
fixed for the next
> test release). If you're using Pd 0.51-4 the problem is
something else.
>
> The "broken pipe" message means the subprocess died
suddenly for some reason.
> But I can't think of an easy way to figure out what
killed it.
>
> cheers
> Miller
>
> On Sat, Nov 06, 2021 at 08:45:28PM +0100, João Pais wrote:
>> Hello list,
>>
>> I have a max patch with pd inside through the pd~
object. But I'm getting
>> the "broken pipe" error in some cases in a mac, such as:
>>
>> - in a compiled standalone it usually works
>>
>> - in the original patch it doesn't
>>
>> - both patches were made in the same system, with the
latest pdmax and pd
>> versions were used. I'm not sure anymore which max
version or macos system
>> was used to compile the standalone, if that's important
(it was either max 7
>> or 8).
>>
>> I don't have access to a mac myself, but the system
where it was tested was
>> a 11.6, with Max 8. It seems to me that in some systems
it works, and in
>> other it doesn't - but I don't have enough hard data to
prove it.
>>
>> Best,
>>
>> Joao
>>
>>
>>
>>
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