[PD] [PD-announce] share-mem lib

Hans-Christoph Steiner hans at at.or.at
Fri Nov 2 18:13:27 CET 2012


The sure fire way would be to do:

[declare -lib share-mem -path ..]

.hc

On Nov 2, 2012, at 11:47 AM, Miller Puckette wrote:

> Sorry, my post was ambiguous - I meant to suggest that "declare -path ..."
> was a good idea for the example patches so that they'd work out of the box
> for people downloading shmem to temporary quarters to look at it and/or
> to include it in a pd-version-proof 'patchball' (if I may coin a term :)
> 
> cheers
> Miller
> 
> On Fri, Nov 02, 2012 at 11:40:38AM -0400, Hans-Christoph Steiner wrote:
>> 
>> No declaration at all will take us to the bad old days when there was no way to resolve which [prepend], [counter], [scale], etc. that a given patch needed except to guess.  Or if you find the patch on the net, the [declare -lib] will tell you that you need to get the 'share-mem' library in order for the patch to work.  Otherwise, you have to guess where [shmem] came from.
>> 
>> .hc
>> 
>> On Nov 2, 2012, at 11:08 AM, Miller Puckette wrote:
>> 
>>> However, the "declare -path" won't make it _not_ work and will fix the
>>> example if a 'user' downloads it without changing their Pd installation
>>> (as someone like me would normally do.)  So I'd recommend the "-path" option
>>> as the easier way to get started up.  Once correctly "installed", ideally,
>>> it shouldn't need any declarations at all.
>>> 
>>> cheers
>>> M
>>> 
>>> On Fri, Nov 02, 2012 at 11:03:36AM -0400, Hans-Christoph Steiner wrote:
>>>> 
>>>> The downside of using [declare -path ..] is that if someone edits an example and saves it somewhere else, it'll no longer work.  An alternative is to use [declare -lib share-mem], then it'll work wherever as long as share-mem is installed.  The downside there is that the library needs to be in the standard install location or the path in order for that to work.  For development, I often put a symlink in ~/pd-externals to the folder in SVN, then it works everywhere.
>>>> 
>>>> .hc
>>>> 
>>>> On Nov 2, 2012, at 7:48 AM, Cyrille Henry wrote:
>>>> 
>>>>> yes, thanks!
>>>>> c
>>>>> 
>>>>> 
>>>>> Le 02/11/2012 12:34, Antoine Villeret a écrit :
>>>>>> nice work
>>>>>> thanks guys,
>>>>>> 
>>>>>> maybe you can add a [declare -path ..] to all examples patches so that they will work just after the make
>>>>>> 
>>>>>> ++
>>>>>> a
>>>>>> 
>>>>>> --
>>>>>> do it yourself
>>>>>> http://antoine.villeret.free.fr
>>>>>> http://drii.ensad.fr
>>>>>> --
>>>>>> Google lit ce mail...
>>>>>> si vous refusez cela, utilisez l'adresse antoine.villeret [at] free.fr <http://free.fr> pour me contacter
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 2012/11/1 Cyrille Henry <ch at chnry.net <mailto:ch at chnry.net>>
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>>  Le 01/11/2012 16:30, Hans-Christoph Steiner a écrit :
>>>>>> 
>>>>>> 
>>>>>>      You can get binaries from any library in pure-data SVN based on the Library Template from the Jenkins build server.  There will soon be a Windows builder there too.  For example, here's a Mac OS X 32-bit i386 binary for shmem.pd_darwin:
>>>>>> 
>>>>>>      https://macosx105-i386.pdlab.__puredata.info/job/template-__libraries/label=macosx105-__i386/ws/share_mem/shmem.pd___darwin <https://macosx105-i386.pdlab.puredata.info/job/template-libraries/label=macosx105-i386/ws/share_mem/shmem.pd_darwin>
>>>>>> 
>>>>>>      You can browse available platforms here:
>>>>>>      https://macosx105-i386.pdlab.__puredata.info/job/template-__libraries/ <https://macosx105-i386.pdlab.puredata.info/job/template-libraries/>
>>>>>> 
>>>>>>      Also, there is a shmem.pd_linux checked into SVN, that should be removed since it can be generated by typing 'make'.
>>>>>> 
>>>>>>  oups, my mistake.
>>>>>>  i removed it.
>>>>>>  cheers
>>>>>> 
>>>>>>  c
>>>>>> 
>>>>>> 
>>>>>>      .hc
>>>>>> 
>>>>>>      On Nov 1, 2012, at 7:15 AM, Nicolas Montgermont wrote:
>>>>>> 
>>>>>>          btw : the object is still in development and may improve these days specially concerning the message syntax.
>>>>>>          we may provide osx (and ubuntu) binaries after the testing period.
>>>>>>          best,
>>>>>>          n
>>>>>> 
>>>>>>          Le 01/11/12 10:24, Cyrille Henry a écrit :
>>>>>> 
>>>>>>              hello,
>>>>>> 
>>>>>>              for now, you'll have to grab sources from svn and compile it yourself.
>>>>>>              examples should provide a quick overview of the usability.
>>>>>>              cheers
>>>>>>              c
>>>>>> 
>>>>>>              Le 01/11/2012 05:40, Phil Stone a écrit :
>>>>>> 
>>>>>>                  Cyrille, this is very exciting. Where can we get more details?
>>>>>> 
>>>>>> 
>>>>>>                  Phil
>>>>>> 
>>>>>> 
>>>>>>                  On 10/31/12 4:19 PM, Cyrille Henry wrote:
>>>>>> 
>>>>>>                      hello,
>>>>>> 
>>>>>>                      i just did a initial commit of share-mem, a lib dedicated to deal with shared memory.
>>>>>> 
>>>>>>                      background :
>>>>>>                      pd / pd~ communication is really slow. by example, having a pd~ patch with 8 audio in and 8 out, use about 50% cpu of a recent computer for each process only to deal with audio communication.
>>>>>>                      sending a large array from one process to the other is almost not possible in RT.
>>>>>>                      This really limit pd~ usability.
>>>>>> 
>>>>>>                      -----
>>>>>> 
>>>>>>                      Thanks to share memory, communication between process can be greatly improve.
>>>>>>                      This lib is mainly composed of an external, and few abstraction and examples.
>>>>>> 
>>>>>> 
>>>>>>                      Everything look stable, at least on a ubuntu (12.04) and a osX laptop.
>>>>>>                      Implementation follow POSIX standard, so it will unfortunately not work on windows.
>>>>>> 
>>>>>>                      everything that I need is there, even if lot's more work could be made. I hope to have user feedback before making more development.
>>>>>> 
>>>>>>                      Cheers
>>>>>>                      Cyrille
>>>>>> 
>>>>>> 
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