From 4273625356313035737 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,a503f12190fad83c X-Google-Attributes: gidf78e5,public From: Barry Margolin Subject: Re: What does the standard say about file descriptors Date: 1999/10/15 Message-ID: #1/1 X-Deja-AN: 536880949 Distribution: world Approved: stephen.clamage@sun.com (comp.std.c++) References: <7u5949$2kc$1@nnrp1.deja.com> X-UID: 0000000001 X-Status: $$$T X-Abuse-Info: Otherwise we will be unable to process your complaint properly X-Complaints-To: abuse@gtei.net X-Trace: /K0ZEC0c672PQGDwr0ILEuxcyObPHVRd2tQIgIdqeOfAdt2yekwikoOiJy+YfpyuSTCOmofVsIiB!IjJMdGG8Olyk548B9v4wZAdnEb37KqUxlv9XbQipB55X9z2vDFhLTOfvVg5vPQ== Organization: GTE Internetworking, Cambridge, MA X-Copies-To: never NNTP-Posting-Date: Thu, 14 Oct 1999 22:21:39 GMT Newsgroups: comp.std.c++ Originator: clamage@taumet In article <7u5949$2kc$1@nnrp1.deja.com>, Dietmar Kuehl wrote: >This stuff is not tested and only intended to give an expression what is >necessary to create a new stream buffer. A real implementation with >support for seeking (not necessary for pipes...), buffering, etc. is >somewhat more involved. Also, to enhance the performance, a real >implementation might access stdio internals. Of course, this is then >again not portable... For this reason, wouldn't it be a good idea to define stdiobuf as a standard class? It's likely that C++ programs will have frequent need to interact with C libraries that return FILE*, much like popen(), and it would be nice to have a standard way to convert them to C++ iostreams. There should be caveats about switching back and forth between using the C and C++ interfaces on the same stream, due to each potentially doing their own buffering, and perhaps a member function to synchronize them prior to switching between th interfaces. -- Barry Margolin, barmar@bbnplanet.com GTE Internetworking, Powered by BBN, Burlington, MA *** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups. Please DON'T copy followups to me -- I'll assume it wasn't posted to the group. [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html ]