Change 33462 by [EMAIL PROTECTED] on 2008/03/10 14:48:29
Add investigating arenas for GP and MAGIC to perltodo.
Affected files ...
... //depot/perl/pod/perltodo.pod#214 edit
Differences ...
==== //depot/perl/pod/perltodo.pod#214 (text) ====
Index: perl/pod/perltodo.pod
--- perl/pod/perltodo.pod#213~33338~ 2008-02-20 14:39:56.000000000 -0800
+++ perl/pod/perltodo.pod 2008-03-10 07:48:29.000000000 -0700
@@ -504,6 +504,18 @@
Configure and/or hints files should be adjusted to probe for the
availability of these features and enable them as appropriate.
+=head2 Arenas for GPs? For MAGIC?
+
+C<struct gp> and C<struct magic> are both currently allocated by C<malloc>.
+It might be a speed or memory saving to change to using arenas. Or it might
+not. It would need some suitable benchmarking first. In particular, C<GP>s
+can probably be changed with minimal compatibility impact (probably nothing
+outside of the core, or even outside of F<gv.c> allocates them), but they
+probably aren't allocated/deallocated often enough for a speed saving. Whereas
+C<MAGIC> is allocated/deallocated more often, but in turn, is also something
+more externally visible, so changing the rules here may bite external code.
+
+
=head1 Tasks that need a knowledge of XS
These tasks would need C knowledge, and roughly the level of knowledge of
End of Patch.
