Re: integrating QtHandles with Octave

[John W. Eaton]

On 01/09/2014 03:06 PM, Michael Goffioul wrote:

> Atomic ref-counting is required for QtHandles, as the GUI runs in a
> separate thread and accesses graphics objects from there. There is
> indeed a performance penalty, which is more visible when
> creating/deleting a lot of objects;

Or copying?  Even though many parts of Octave pass objects that use
reference counting by const reference (so no copy) we still have a lot
of things that do cause copies to happen (like returning a value from
a function).  Any shallow copy that happens is a reference count
operation.  Is it slower when using the atomic refcount option?

Is it possible to avoid the requirement?  Or does that just complicate
things too much?

jwe