Re: [Boost-users] Interprocess: fixed_managed_shared_memory bug

From: Ion Gaztañaga (igaztanaga_at_[hidden])
Date: 2007-03-23 12:07:21

Sunil Chomal wrote:

[snip]

> In priv_open_or_create() one creates the mapped_region which in turn calls
> mmap() to map the shared memory to the addr specified by us. However the
> mapped_region object that is created here is as follows:
> 
> mapped_region        region(dev, read_write);
> 
> here the address is not passed to the to the mapped_region constructor,
> which has default arguments for addr which is '0'. Hence, the
> fixed_managed_shared_memory is never allocated at the addr specified. 
> 
>  [snip]
> 
> A work around that I have done is to create the mapped_region as follows:
> 
> mapped_region        region(dev, read_write, 0, 0, addr);

Yes, this is a bug. Thanks for pointing it. Your fix is correct. I will 
apply it to the CVS code.

Thanks for the bug fix,

Ion