Re: [Boost-users] Interprocess: limited boost::any in shared memory

Subject: Re: [Boost-users] Interprocess: limited boost::any in shared memory
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2018-11-21 20:20:11

AMDG

On 11/21/2018 11:57 AM, Ferguson, Neil D CTR (US) via Boost-users wrote:
> Sirs and madams,
> I hope to use boost interprocess shared memory to pass complex and dynamic data structures between processes on a host efficiently.  The structures will be comprised only of simple primitives (int, float, etc.), interprocess basic_string,  interprocess containers (vectors and maps), containers of containers, and (possible deal killer) boost::any.  From the interprocess documentation, it _looks_ like the preceding is doable, aside from boost::any.  The boost::any objects will themselves contain only primitives, basic_string, or interprocess vectors of unsigned char.    So it _looks_ like the data held by the any should be okay.  My question:  does boost::any use pointers, references, or other constructs that preclude the class from working in shared memory?
> 

Yes, it does.  I recommend using variant instead.

In Christ,
Steven Watanabe