Re: [Boost-users] Boost pool and move constructor

Subject: Re: [Boost-users] Boost pool and move constructor
From: Gabriel Redner (gredner_at_[hidden])
Date: 2014-05-06 11:32:26

Hi Bruno,

You can work around this problem by using malloc/free to manage the memory,
and then creating and destroying the object yourself.

void *mem = myPool.malloc();
Object *obj = new (mem) Object(args);

Then to destroy:

obj->~Object();
myPool.free(obj);

-Gabe

On Mon, May 5, 2014 at 11:10 PM, Bruno Sanches <bcsanches_at_[hidden]> wrote:

>  I am trying to create a object using boost object_pool, but trying to use
> the move constructor of the desired object, but on Visual 2013, I am always
> getting:
>
> error C2664: 'MyObject::MyObject(const MyObject &)' : cannot convert
> argument 1 from 'MyObject (__cdecl &)(void)' to 'MyObject &&'
>
> The error happens because boost pool construct method always assume a
> const parameter.
>
> Sample code:
>
>
> #include <boost/pool/object_pool.hpp>
> class MyObject{
>     public:
>         MyObject():
>             m_iData(0)
>         {
>
>         }
>
>         MyObject(MyObject &&other):
>             m_iData(std::move(other.m_iData))
>         {
>             other.m_iData = 0;
>         }
>
>         MyObject(const MyObject &rhs) = delete;
>
>         MyObject &operator=(const MyObject &rhs) = delete;
>
>     private:
>         int m_iData;};
> int main(int, char**){
>     boost::object_pool<MyObject> pool;
>
>     MyObject obj;
>
>     MyObject *pObj = pool.construct(std::move(obj));}
>
> Is there any way to invoke the move constructor using boost::object_pool?
>
> Thanks
> Bruno Sanches
> ========================
> http://www.pontov.com.br
>
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>