[PD] pdmax - broken pipe in macos?
Lucas Cordiviola
lucarda27 at hotmail.com
Wed Nov 17 15:49:26 CET 2021
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
>>>> <info at christofressi.com> 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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