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| author | Nicholas Clark <nick@ccl4.org> | 2008-07-27 09:58:13 +0000 |
|---|---|---|
| committer | Nicholas Clark <nick@ccl4.org> | 2008-07-27 09:58:13 +0000 |
| commit | 3880c8ecf10dc96c62bcbf2ffe75d782d2aed4a7 (patch) | |
| tree | eb22c9f97c3e66a0063f1d006334ac3c6e078c93 /pod | |
| parent | 48f8bad9292f7ad3bc0708478205cd9443717744 (diff) | |
| download | perl-3880c8ecf10dc96c62bcbf2ffe75d782d2aed4a7.tar.gz | |
Note the possibility of sharing arenas between types.
p4raw-id: //depot/perl@34160
Diffstat (limited to 'pod')
| -rw-r--r-- | pod/perltodo.pod | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/pod/perltodo.pod b/pod/perltodo.pod index efe7fe221b..9421260195 100644 --- a/pod/perltodo.pod +++ b/pod/perltodo.pod @@ -538,6 +538,14 @@ 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. +=head2 Shared arenas + +Several SV body structs are now the same size, notably PVMG and PVGV, PVAV and +PVHV, and PVCV and PVFM. It should be possible to allocate and return same +sized bodies from the same actual arena, rather than maintaining one arena for +each. This could save 4-6K per thread, of memory no longer tied up in the +not-yet-allocated part of an arena. + =head1 Tasks that need a knowledge of XS |