Geometry Boost List: [geometry] volatile polygon

Subject: [geometry] volatile polygon
From: Long Guo (longzaitianguo_at_[hidden])
Date: 2013-11-24 22:52:02

Dear sir,

I have two threads using the same polygon.
One thread is modifying the polygon.
And I want the other thread to use the modified polygon,
so I need to define the polygon as volatile.
However, when I use *(volatile polygon*)&mypolygon,
I get some error as follows:
error: no type named ‘type’ in ‘struct boost::geometry::dimension<volatile
boost::geometry::model::polygon<boost::geometry::model::d2::point_xy<double>
> >’.

What's wrong with this usage?

Best regards,
Guo Long