Re: [Plplot-devel] plinit, plend, plinit sequence now works, but I am having second thoughts

[Alan W. I. <ir...@be...>]

On Wed, 11 Dec 2002, Joao Cardoso wrote:

> In that case, a pllib_end() makes sense! Symmetry is something I like (I'm a
> physicist...).
> >From your description, pllib_end should release the memory allocated by
> pllib_init. And plend should call pllib_end, as plinit calls pllib_init.
>
> Sure. knowing that a pllib_end() exists will encourage us to not loose the
> track of allocated memory.
>
> > So has a consensus been reached here to use plend for this library memory
> > release task with appropriate plend =>plend1 adjustments to the x octave
> > scripts?
>
> OK. But don't you want to accept my idea of a pllib_end()?

That sounds fine to me.

For now, I have reactivated what I did to release libltdl memory in plend,
and changed your octave x examples (plend ==> plend1) so they still work.  I
encourage you to follow up on that with implementing the pllib_end idea.  I
prefer you to do that aspect since I always seem to have trouble creating
new C functions correctly.  Also, you will probably want to set a flag
in pllib_end so that any attempt to call plinit afterward fails gracefully
rather than just crashing because the memory resources are gone.

Obviously, this is just the start of pllib_end.  I encourage those who are
familiar with the dynamic driver's memory allocation to release it properly
in pllib_end to respond to the bug report that Joao mentioned in a later
e-mail as well as to get a clean bill of health from valgrind.

Alan

email: ir...@be...
phone: 250-727-2902	FAX: 250-721-7715
snail-mail:
Dr. Alan W. Irwin
Department of Physics and Astronomy,
University of Victoria, P.O. Box 3055,
Victoria, British Columbia, Canada, V8W 3P6
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