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Date: Thu, 15 Aug 2013 18:44:00 -0000
From: Eli Zaretskii <eliz@gnu.org>
Subject: Re: [PATCH] Unbuffer stdout and stderr on windows
In-reply-to: <20130815175940.GD6955@ednor.casa.cgf.cx>
To: palves@redhat.com, gdb-patches@sourceware.org, brobecker@adacore.com, yao@codesourcery.com
Reply-to: Eli Zaretskii <eliz@gnu.org>
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References: <51EE23F8.1070905@codesourcery.com> <83wqohw4ee.fsf@gnu.org> <20130729192559.GA5348@ednor.casa.cgf.cx> <83d2q1xiyv.fsf@gnu.org> <51F6C7B2.3020400@redhat.com> <20130731034045.GA5565@ednor.casa.cgf.cx> <20130812211105.GA11128@adacore.com> <8361v9piop.fsf@gnu.org> <20130815173618.GA6955@ednor.casa.cgf.cx> <83eh9uonlg.fsf@gnu.org> <20130815175940.GD6955@ednor.casa.cgf.cx>
X-SW-Source: 2013-08/txt/msg00405.txt.bz2

> Date: Thu, 15 Aug 2013 13:59:40 -0400
> From: Christopher Faylor <cgf-use-the-mailinglist-please@sourceware.org>
> 
> >>If the mingw "unbuffered" mode means that everything is o n e c h a r a
> >>c t e r a t a t i m e
> >
> >It does mean that.  Doesn't it work like that in Cygwin?
> 
> Cygwin uses newlib which, AFAICT, writes a block at a time without
> storing the block in a buffer first.
> 
> So:
> 
>    fwrite (foo, 27, 1, stdout);
> 
> writes 27 bytes to stdout in one shot, without buffering.

Sorry, I wasn't thinking about fwrite.  I was thinking about fprintf
and putc.