[Bug 732284] New: bufferlist: optimisation: pre-allocate buffer array in one go with the buffer list

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=732284
  GStreamer | gstreamer (core) | git

           Summary: bufferlist: optimisation: pre-allocate buffer array in
                    one go with the buffer list
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: All
            Status: NEW
          Keywords: perf
          Severity: enhancement
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: t.i.m at zen.co.uk
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=279313)
 View: https://bugzilla.gnome.org/attachment.cgi?id=279313
 Review: https://bugzilla.gnome.org/review?bug=732284&attachment=279313

bufferlist: pre-allocate buffer array in one go with the buffer list

A buffer list currently takes at least three allocs and then three frees,
assuming there are no re-allocs to expand. We can allocate the buffers array in
one go with the list to save these additional allocs/frees in almost all common
use cases, which can easily add up to a couple of hundred malloc/frees per
second saved.

Putting this here until 1.4 is out.

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