Re: [Boost-users] [Interprocess] shared_ptr in shared memory and inheritance

Subject: Re: [Boost-users] [Interprocess] shared_ptr in shared memory and inheritance
From: Ion Gaztañaga (igaztanaga_at_[hidden])
Date: 2009-02-12 16:42:18

Gaetan Gaumer wrote:
> 
>     First of all, if you use fixed_managed_shared_memory, you want to
>     specify the same base address in ever process, otherwise, you're
>     code won't work.
> 
> 
> Is it enough to create the segment with the same name in each process :
> eg  a call to the  line below  in each process :
> fixed_managed_shared_memory 
> segment(open_or_create,"sharedPtrSharedMemoryTest", 2048);

You don't have any guarantee that the OS will map it in the same address 
in both processes.

> I understand your solution but I don't know wich method I have to redefine.
> Because the problem is not really the destructor, but rather the "deleter".
> And I don't find how to redefine (and register) the base deleter to call 
> the derived one. 
> 
> Could you help me (again...)

Sorry, it was just a fast idea that I haven't elaborated. But I guess 
this will be hard to implement. Inheritance and shared memory don't work 
very well

> Regards,
> Gaëtan

Regards,

Ion