From:	"Rafael García" <rafael AT geninfor DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	pause() in idle programas
Date:	Mon, 13 Mar 2000 10:26:10 +0100
Organization:	Telefonica Transmision de Datos
Lines:	40
Message-ID:	<8aibv9$p6j$1@diana.bcn.ttd.net>
NNTP-Posting-Host:	194.179.101.62
X-Priority:	3
X-MSMail-Priority:	Normal
X-Newsreader:	Microsoft Outlook Express 5.00.2014.211
X-MimeOLE:	Produced By Microsoft MimeOLE V5.00.2014.211
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Hello all, I have an interesting question (I think) about multitasking djgpp
programs under Windows

I have an interactive program that show a menu and wait for the user to take
an action. When it is acomplished, it goes newly to the loop for the
keyboard and so on.

I need to maintain de control while in the pause because I need to do some
light work, for example, to show the time, search for new files in some
directory...  so I cannot stop with a getch() to read the keyboard.

My loop is something like this:

int getoption() {
   while (!kbhit())     // wait until user touch keyboard
      maintenance();
   return getch();
   }

well, this works, but I think it is a waste of time to the operating system
while I am working with other programs. I thougth of this:


int getoption() {
   while (!kbhit()) {
      pause();                  // or delay(50)
      maintenance();
      }
   return getch();
   }

this must do a better work in distributing CPU power between multiple
programs, but I have found that this makes other proccess to perform much
poorly.

How is it possible?

- Raw text -