Re: Remove Luabind ownership on C++ pointer?

Another option is to register a factory function instead of constructor.
E.g.

C++
Object* CreateObject() { return new Object(); }

module(lua)

[

                    class_<Object>("Object")

                    .def("CreateObject", &CreateObject)
];



Lua:

local object = CreateObject();


You'll be solely responsible for deleting these objects in that case.


Another thing I did once is to keep a Lua table with all created instances.
In Lua:


function CreateObject(...)

      objects = objects or {}

      local object = Object()

      table.insert(objects, object)

      return object

end


and then create all your instances through that function.


I'll leave you to decide which of the methods is the most elegant :)


On Thu, Sep 30, 2010 at 1:30 PM, eduard mueller <
[email protected]> wrote:

> Hold the object in a boost::shared_ptr or some other reference
> counting smart_ptr in Lua:
> class_<Object, boost::shared_ptr<Object> >("Object")
>
> Then the object will be kept alive as long as another shared_ptr uses
> the object in C++. Aka, the instance that is created in Lua will only
> release the shared pointer, not destruct the object itself when
> garbage collected.
>
> Best regards,
> Eduard
>
>
> On Thu, Sep 30, 2010 at 05:16, neosettlers <[email protected]>
> wrote:
> > Greetings,
> >
> >
> >
> > I’m wondering how to remove Luabind ownership on C++ pointers:
> >
> >
> >
> > C++
> >
> > module(lua)
> >
> > [
> >
> >                     class_<Object>("Object")
> >
> >                     .def(constructor<>())
> >
> > ];
> >
> >
> >
> > .lua
> >
> > local object = Object();
> >
> >
> >
> > …
> >
> >
> >
> > I would like Luabind NOT to delete the object C++ pointer when lua_gc()
> is
> > called.
> >
> >
> >
> > If anyone found an elegant solution for this, I’m definitely interested
> to
> > hear about it.
> >
> >
> >
> > Thx,
> >
> >
> >
> >
> >
> >
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> >
>
>
> ------------------------------------------------------------------------------
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