Re: [Boost-users] How to use the shared region in append mode

Subject: Re: [Boost-users] How to use the shared region in append mode
From: manish4gupta (manish_at_[hidden])
Date: 2009-10-02 00:17:45

I found one managed_shared_memory creation constructor. 
managed_shared_memory segment(open_or_create,MySharedMemory, 99989);
Does this mean if there exists a region MySharedMemory ,then open it else
create the region "MySharedMemory".

But it does not work like this. How can i solve my pblm. 

manish4gupta wrote:
> 
> I think it is not copyable so what else can be done?
> 
> Roland Bock-2 wrote:
>> 
>> manish4gupta wrote:
>>>     if(flag == 0)
>>>      managed_shared_memory segment(create_only,MySharedMemory, 99989);
>>>     else 
>>>      managed_shared_memory segment(open_only  ,MySharedMemory); 
>>> 
>>> 
>>> Error message:
>>> Indexingtest.cpp:41: error: ‘segment’ was not declared in this scope
>>> 
>>> How can i overcome such pblm.
>> 
>> By reading a good book about C++ :-)
>> 
>> You want to learn about scope. Then you have several options. Pointers 
>> are one, functions might be another (not sure if managed_shared_memory 
>> is copyable).
>> 
>> If you go for pointers, familiarize yourself with shared_ptr. Smart 
>> pointers are your friends.
>> 
>> 
>> Regards,
>> 
>> Roland
>> _______________________________________________
>> Boost-users mailing list
>> Boost-users_at_[hidden]
>> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>> 
> 
> 

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