Re: [Boost-users] [Boost Interprocess] - Shared Memory File - Corruption

From: Srinivas Gardas (gardas_at_[hidden])
Date: 2008-01-09 16:23:39

Hi,
I am a little confused about how to make 'interprocess_mutex' part of the
'managed_shared_memory' object which actually represents the shared_memory?
Is there a base class or something that can take the mutex?

I placed an '*interprocess_mutex*' as a member variable *in the class that
contains my 'managed_shared_memory'* object as a member variable and was
locking it in the methods that accessed the shared memory. I guess this did
not work out as I believe what I did effectively locked the object of my
class that was holding the embers. And since this is not actually the shaed
resource between the processes it didn't work out..

I'd really appreciate if you could provide an example of just show me bbased
on my initial code.. how the 'managed_shared_memory' can be locked using the
mutex.

Sreenu

On 1/9/08, Srinivas Gardas <gardas_at_[hidden]> wrote:
>
> Hi Ion,
> Probably that's the reason.. I haven't used any mutexes thought it's all
> implemented in the 'interprocess'. I am kind of new to this stuff.. Could
> please give me a code example where 'interprocess_mutex' is used by a
> 'Server' and 'Client' to lock the managed_shared_memory ?
>
> I really appreciate your help.
>
> Thanks & Regards
> Sreenu
>
>
>
> On 1/8/08, Ion Gaztañaga <igaztanaga_at_[hidden]> wrote:
> >
> > Srinivas Gardas escribió:
> > > Hi,
> > > I am facing an issue with the 'Shared Memory File'.. Sometimes I get
> > the
> > > 'SharedMemory File Name' as the first element of the structure that I
> > used,
> > > to create a 'interprocess::list' and when this happens, it means that
> > the
> > > SharedMemory got corrupted and my program crashes. Has anyone faced
> > this
> > > issue, or does anyone know what might be wrong?
> >
> > I don't see any problem with your approach, can you give me more
> > information? Also, take in care that you need to use mutexes to protect
> > concurrent accesses to the list (an interprocess_mutex constructed in
> > the segment should work).
> >
> > Regards,
> >
> > Ion
> > _______________________________________________
> > Boost-users mailing list
> > Boost-users_at_[hidden]
> > http://lists.boost.org/mailman/listinfo.cgi/boost-users
> >
>
>