Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Date: Sat, 26 Jun 2004 20:23:08 -0400 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: higher-level IO very slow with cygwin1.dll 5.10 (due to set_flags?) Message-ID: <20040627002308.GB21664@trixie.casa.cgf.cx> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <20040626154504.GA961349@hpn5170x> <20040626160554.GA980221@hpn5170x> <20040626170940.GD20063@trixie.casa.cgf.cx> <20040626174145.GA1032441@hpn5170x> <40DDEE8F.7090707@ntlworld.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <40DDEE8F.7090707@ntlworld.com> User-Agent: Mutt/1.4.1i On Sat, Jun 26, 2004 at 10:45:51PM +0100, Mark Thornton wrote: >Pierre A. Humblet wrote: > >>On Sat, Jun 26, 2004 at 01:09:40PM -0400, Christopher Faylor wrote: >> >> >>>On Sat, Jun 26, 2004 at 12:05:54PM -0400, Pierre A. Humblet wrote: >>> >>> >>>>Beware, I found this: >>>>2000-05-19 DJ Delorie >>>> * libc/include/stdio.h: no getc/putc macros for cygwin; causes >>>> compatibility issues with different dll versions >>>>so you may need to recompile when updating cygwin. >>>> >>>> >>>Also wouldn't that work around the file locks that were ostensibly put >>>there for a reason? >>> >>> >> >>That crossed my mind. But there is no file lock in the macro, which is >>used by systems other than cygwin. How do they manage it? >>I also assume that single threaded programs don't need the lock. >> >Is the lock to ensure that normal POSIX append semantics are obtained >when two processes are writing to the same file? Normal win32 >behaviour would tend to overwrite whatever had been written by the >other process No. newlib is supposed to be OS agnostic. The locks are certainly for multi-threaded purposes. Anyone who is interested could always ask in the newlib mailing list. newlib sourceware org. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/