Re: [boost] File Handle and FILE* wrappers?

Subject: Re: [boost] File Handle and FILE* wrappers?
From: Sylvester-Bradley, Gareth (Gareth.Sylvester-Bradley_at_[hidden])
Date: 2014-11-19 07:47:01

On Wed, Nov 19, 2014 at 12:33 PM, Andrey Semashev wrote:
> On Wed, Nov 19, 2014 at 3:16 PM, Olaf van der Spek <ml_at_[hidden]> wrote:
> > Hi,
> >
> > Would there be any interest in wrappers for file handles / descriptors
> > and FILE*?
> >
> > Sometimes one needs native handles or FILE* for interoperability or
> > special features like memory mapped IO, but standard C++ doesn't
> > provide convenient RAII friendly wrappers for these.
> > The idea seems trivial yet quite useful.
> >
> > I'm aware of <boost/iostreams/device/file_descriptor.hpp> but it seems
> > to be too high-level.
> >
> > I've put a simple start for FILE* at
> > https://code.google.com/p/xbt/source/browse/trunk/xbt/misc/xbt/cfile.h
> > What do you think?
> >
> > Also posted at https://groups.google.com/a/isocpp.org/forum/#!topic/std-proposals/Q4RdFSZggSE
>
> shared_ptr/unique_ptr work fine for me with FILE*, one only has to
> write a deleter. A dedicated class would be needed for POSIX file
> descriptors though.

Peter Sommerlad and Andrew L. Sandoval's unique_resource RAII proposal uses both FILE* and POSIX file descriptors as examples.
I think this is the latest revision:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4189.pdf

Gareth

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