Ian McCulloch escribió:
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() ?
I should have read this before, I've lost some precious time searching until I've found fstat ;-) It's required to work with shared memory: http://www.opengroup.org/onlinepubs/000095399/functions/fstat.html I'll fix it ASAP, Ion