Re: [Boost-users] Boost.Interprocess: Can I share the multi_index array between processes?

Nice!!! Thank you for help!! The example 12 is fitting exactly to my requirements. The MultiIndex great library thanks for inventing that.:) Arman. On Wed, Apr 7, 2010 at 9:24 AM, wrote:

Arman Khalatyan escribió:

...

Hi, Thanks for your detailed explanations. I was paying with your nice example. Currently my structure is keeping only several floats, ints and unsigned ints. Following the Interprocess documentation, as you wrote, I can put them directly into shared memory:

[...]

Now I am trying to access the memory from client: shared_memory_object shm (open_only, "shared_memory", read_only);

//Map the whole shared memory in this process mapped_region region(shm, read_only);

//Check that memory was initialized to 1 const particlesID_set *P = static_cast(region.get_address());

//const particlesID_set::nth_index<1>::type L1_ID_index = (*P).get<1>();// This does not compile, Why?

It is

const particlesID_set::nth_index<1>::type& L1_ID_index = ...

Note the added '&'; this is explained for instance at the final paragraph of

http://www.boost.org/libs/multi_index/doc/tutorial/basics.html#multiple_sort

Joaquín M López Muñoz Telefónica, Investigación y Desarrollo _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

-- ------------------------------------------ Dr Arman Khalatyan, Observatoire Astronomique de Marseille-Provence Laboratoire d'Astrophysique de Marseille -----------------------------------------