Re: [boost] [interprocess][Shared memory]

From: Shibu Bera (shibu.ncst_at_[hidden])
Date: 2007-03-07 23:16:20

Hi,

After creating the shared memory I put three containers (boost::multi_index,
std::map and std::vector) into the shared memory, then objects into the
containers. But in later part of the execution, there are condition when I
need to remove these elements and containers. I also don't want to eat up
the primary memory by creating the saparate shared memory nor I want to
remove the earlier shared memory. If I just destroy the containers the
previous garbage data may create problem. So I want such method or way to
memset the shared memory with NULL characters. This information should
suffice the query, Can I get some clue now?

On 3/8/07, Ion Gaztañaga <igaztanaga_at_[hidden]> wrote:
>
> Shibu Bera wrote:
> > Thanks a lot for the reply..... but, if shared memory is created with
> the
> > class  fixed_managed_shared_memory..? There is a method in the class
> > get_address() which returns base address of the shared memory. Suppose
> if I
> > memset this pointer, then initial mapping information kept inside the
> shared
> > memory (map tree created by segment_manager and memory_algorithm) will
> also
> > be lost. Please tell me any clue about this problem..?
>
> Well, when fixed_managed_shared_memory is created, the memory is zeroed
> and after that, the map tree is created. Why do you want to memset all
> the segment to a particular value? I will need a bit more information of
> your needs.
>
> Regards,
>
> Ion
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