I believe those BUFFERED_FILE blocks are from the patches I submitted years ago
that implemented the memory buffer.
Prior to that patch, Plplot used a temporary file to buffer plot commands
(using a plplot internal command set). Those temporary files would often get
left behind on abnormal termination. I implemented a memory only buffer (which
also sped up my code) but I wanted to leave the original temporary file buffers
in case someone was using plplot on a low memory machine.
The contents of the memory buffer is (or at least was) identical to what was in
the temporary file. It would be relatively easy to implement two routines that
read and write the memory buffer. If you want I can do that and send you a
patch.
> On Jan 9, 2015, at 4:58 AM, Phil Rosenberg <p.d.rosenb...@gmail.com> wrote:
>
> Hi all
> Does anyone know if the metafile driver still exists and if so what CMAKE
> parameters are needed to enable it - I currently don't get it for my builds.
>
> Also is there an easy way to read a plplot metafile in again? I see quite a
> few #ifdef BUFFERED_FILE comments in plbuf.c, which look like they do exactly
> that, however it looks like a build can only either use a memory buffer or a
> file buffer, not both.
>
> Just for background I'm trying to deal with the wxWidget driver segfault bug,
> which requires the wxWidgets app to run in a separate thread or as a separate
> process. As plplot isn't threadsafe I am looking into the latter, but I need
> a way to send commands from the console app to this separate process - I was
> thinking that the easiest way to do this would be to write out the buffer,
> then read it back in again. Thoughts welcome.
>
>
>
> Phil
>
>
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