Re: [boost] [Interprocess] Possible bug in shared memory on FreeBSD 8.0

Subject: Re: [boost] [Interprocess] Possible bug in shared memory on FreeBSD 8.0
From: Ian McCulloch (ianmcc_at_[hidden])
Date: 2009-08-11 03:01:44

Ion Gaztañaga wrote:

> Manish Vachharajani escribió:
>> I've been happily using Boost.Interprocess to create shared memory
>> regions under FreeBSD 7.2, however, I am having issues on FreeBSD 8.0
>> pre-release.  I can reproduce the problem with Boost 1.39.0 and the
>> svn trunk.  The source of the problem appears to be that
>> Boost.Interprocess calls lseek on a file descriptor returned by
>> shm_open, but the results of such an lseek are undefined.  Below, I
>> explain further how I came to this conclusion.
> 
> You are right, it's undefined, but it usually works. However, I can't
> find a way to obtain the size of a shared memory segment using POSIX, if
> you could fin a way to do it it would be really nice.

fstat() ?

Cheers,
Ian McCulloch