Re: [Boost-users] Boost interprocess map in shared memory

From: Jan Suchý (zuchy_at_[hidden])
Date: 2008-06-02 04:43:57

Hallo Ion,
it's perfect. It's working now very well.
I have used the v 1.35 solution.
I am planning to port the application to the HP-UX from Linux. Do you see any problems to use interprocess module 1.35 on that platform?
Thank you,
have a nice day,
Jan Suchy

Date: Fri, 30 May 2008 21:22:45 +0200
From: Ion Gazta?aga <igaztanaga_at_[hidden]>
Subject: Re: [Boost-users] Boost interprocess map in shared memory
To: Boost User List <boost-users_at_[hidden]>
Message-ID: <48405405.7010801_at_[hidden]>
Content-Type: text/plain; charset=UTF-8; format=flowed

Jan Such? wrote:

> Now, I want to have library, where i want to find previously created shared segment and read it more-times.
> But I do not want to open it on every runQ function call.
> I need to open this segment only once and use it more-times when runQ in lib is called.
>
> I tried this:

The problem is that managed_shared_memory is not copyable. With current
trunk code you could move it from localsegment to segment:

      managed_shared_memory localsegment(open_only, "MySharedMemory");
      segment = move(localsegment);
         //localsegment is now in default-constructed state

For 1.35 code allocate it through new (not compiled, this might contain
errors):

std::auto_ptr<managed_shared_memory> segment_ptr;

int init()
{
    segment_ptr.reset
       (new managed_shared_memory
          (open_only, "MySharedMemory")
       );
}

Regards,

Ion