select() read() and write() on /dev/console
Christopher Faylor
cgf-no-personal-reply-please@cygwin.com
Sun Nov 21 21:25:00 GMT 2004
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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