Hi Grant, On Fri, Jan 28, 2011 at 08:13:28PM -0800, Grant Erickson wrote: > As far as I can see, the stats mapping is not published or shared outside of > connman. If so, there's no reason to map it SHARED versus PRIVATE.
>From the mmap man pages: MAP_SHARED Share this mapping. Updates to the mapping are visible to other processes that map this file, and are carried through to the underlying file. The file may not actually be updated until msync(2) or munmap() is called. MAP_PRIVATE Create a private copy-on-write mapping. Updates to the mapping are not visible to other processes mapping the same file, and are not carried through to the underlying file. It is unspecified whether changes made to the file after the mmap() call are visible in the mapped region. The reason for picking MAP_SHARED was to be sure the changes in buffer really hits the file. I read that MAP_PRIVATE does not garantee this. This is reason I was picking MAP_SHARED together with msync. cheers, daniel _______________________________________________ connman mailing list connman@connman.net http://lists.connman.net/listinfo/connman