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Date: Sun, 21 Nov 2004 16:25:44 -0500
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: select() read() and write() on /dev/console
Message-ID: <20041121212544.GB6384@trixie.casa.cgf.cx>
Reply-To: cygwin AT cygwin DOT com
References: <Pine DOT LNX DOT 4 DOT 44 DOT 0411191834400 DOT 1687-100000 AT centurai DOT sps DOT mot DOT com> <20041119183842 DOT GB26102 AT trixie DOT casa DOT cgf DOT cx> <cnql46$3lm$1 AT sea DOT gmane DOT org>
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On Sun, Nov 21, 2004 at 07:00:42PM +0100, Jason Curl wrote:
>Christopher Faylor wrote:
>>On Fri, Nov 19, 2004 at 06:46:56PM +0100, Jason Curl wrote:
>>
>>>My question, how do I go about investigating what the root cause is? Has 
>>>anybody else seen similar issues and been able to work around it? I'm 
>>>stuck and I've never seen the source code to cygwin before.
>>
>>
>>If you suspect a problem with the cygwin DLL then you can build a
>>debugging version of the cygwin DLL and debug it using gdb.
>>
>>Most of the console handling is in fhandler_console.cc.  The select
>>handling is in select.cc.  Look for the string "console" there.
>>
>>Instructions for building the DLL are in the FAQ:
>>
>>http://cygwin.com/faq/faq_3.html#SEC101
>>
>Hello,
>
>Is there a way I can use debug_printf() inside C source (not C++). I've 
>found <sys/strace.h> and <sys/ipctrace.h>.
>
>Googling and I don't find information about what I need to include, and 
>probably what I need to link.
>
>#define TRACE
>#include <stdio.h>
>#include <sys/ipctrace.h>
>
>int main(void)
>{
>  debug_printf("TEST\n");
>}
>
>It won't link, not finding _err_handler.

Just use regular printf or fprintf.  debug_printf is not intended for
use outside of the cygwin DLL.

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