[gmpi] Re: Linux C++ question
- From: Tim Hockin <thockin@xxxxxxxxxx>
- To: gmpi@xxxxxxxxxxxxx
- Date: Thu, 24 Feb 2005 13:14:12 -0800
On Fri, Feb 25, 2005 at 10:09:14AM +1300, Jeff McClintock wrote:
> When does that object get deleted?
When the refcount hits 0. It doesn't have to be function-scoped, it could
easily be file scoped, so the ::Release method has direct access.
> >I don't see how those two are related? It's easy enough to share things
> >between instances. Whether an object is truly static or is just wrapped
> >up doesn't matter.
> >
> >Consider (roughly from GMPI factory)
> >
> > GMPI_Factory* Factory(void)
> > {
> > static GMPI_Factory the_factory;
> > return &the_factory;
> > }
> >
> >vs
> >
> > GMPI_Factory* Factory(void)
> > {
> > static GMPI_Factory* the_factory;
> > if (the_factory == NULL) {
> > the_factory = new GMPI_Factory();
> > }
> > return the_factory;
> > }
> >
> >
> >The overhead is a branch.
> >
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> >
>
>
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--
Tim Hockin
thockin@xxxxxxxxxx
Soon anyone who's not on the World Wide Web will qualify for a government
subsidy for the home-pageless.
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