[boost] Re: IOStream mmap too restrictive?

"Neal D. Becker" <ndbecker2@verizon.net> wrote in message news:ch4qs2$npr$1@sea.gmane.org...

"Files must exist before being opened, and are never truncated; attempting to write past the end of a file results in an error. "

This is quite restrictive, compared to the capabilities of posix mmap. Are these restrictions really necessary?

I'm not an expert on memory mapped files. I basically redesigned the public interface but used Craig Henderson's implementation. I'd be happy to remove any or all of these restrictions, as long as it can be done for Windows and Posix. Could you be more specific about the missing functionality? I'll try to add it if it can be done portably. Jonathan