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Subject: Re: Engine programming - standard input

Author: Robert Hyatt

Date: 06:43:38 12/03/03

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On December 03, 2003 at 05:08:14, Matt Thomas wrote:

>I want to create a chess engine and am starting with the input/output routines.
>I can handle output, but am not sure about how to implement input.  I am
>thinking to use ReadFile() to be unbuffered, and for pipes.  I could implement a
>loop to poll for input, but wouldn't that be a drag on CPU cycles?  I want to be
>able to use pondering, but if the user decided to cancel the game I need to
>listen for the command.  I am going to use the Winboard protocol and understand
>the commands.  I am using VC6 to create a console app and am familiar with
>creating a basic program in Windows/console/DOS.  Any help would be much
>appreciated.  Examples would go a long way.  I have looked at some code for
>other chess programs, but there is so much to sift thru and I want to focus
>specifically on understanding the basics of implementing std input.  Thanks,
>Matt


1.  use Read().

2.  "poll" using select() (assuming unix) with a timeout of 0.0, which simply
asks the question "Is input available for me to read on stdin?"  If the answer
is no, do whatever you want.  If the answer is yes, read it.  If you don't
have anything to do, just do a read() to get the next command...



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