Re: Timers

["Padraig O'Briain" <Padraig Obriain Sun COM>]

Will the function gtk_timeout_add() do what you need? It is referred to on page 
65 of Havoc's book.

Padraig


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> To: "G Hasse" <gh raditex se>
> Cc: <gtk-app-devel-list gnome org>
> Subject: Re: Timers
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> Hi Göran
>
> > You should *never* need to poll something. When the other application
> > have information to you it should send it on a file descriptor
> > (or socket).
>
> Yeah the problem is that I am developing a Maintenance application that
> communicates with a device. This device has an interface module that my
> application 'talks to'. This interface module then 'talks to' the device
> sounds a bit like a driver doesn't it. Anyway my application has to report
> on any alarms generated by this device and it does this by reading a message
> stack stored within this interface hence the need to poll it periodically.
> Its not ideal but you can only work with what you are given.
>
> > (or socket).
>
> The application has also got to 'talk' to some other modules that we have
> developed in house. This has been implemented using sockets.
>
> Thanks for your advice
>
> Ian
>
> ----- Original Message -----
> From: "G Hasse" <gh raditex se>
> To: "Ian Frawley" <ifrawley opaltelecom co uk>
> Cc: <gtk-app-devel-list gnome org>
> Sent: Tuesday, May 29, 2001 2:13 PM
> Subject: Re: Timers
>
>
> On Tue, 29 May 2001, Ian Frawley wrote:
>
> > Hi
> >
> > I am trying to develop an application on Linux. This application has a
> > GUI which I have implemented using GTK written in C++. The problem is
> > that I have to periodically poll another application so a timer widget
> > or something would be great but I don't think timers exist. Hopefully
> > I am wrong and someone could point me in the right direction.
>
> You should *never* need to poll something. When the other application
> have information to you it should send it on a file descriptor
> (or socket).
>
> You could then decide if you whant that information or disregard it.
>
> In your application you do something like
>
> gdk_input_add( mySocket, GDK_INPUT_READ, GTK_SIGNAL_FUNC(file_function),
> &cmdinfo );
>
> where mySocket is the socket (or filedescriptor).
>
> Don't use poll. You don't need it.
>
> Göran Hasse
>
>
> > Any help would be greatly appreciated
> >
> > Thanks in advance
> >
> > Ian Frawley
> > Software Engineer
> > Opal Telecom
> > Tel: 0161 222 2122
> > E-Mail: ifrawley opaltelecom co uk
>
> ----------------------------------------------------------------
> Göran Hasse            email: gh raditex se     Tel: +46 8 694 92 70
> Raditex AB             http://www.raditex.se    Fax: +46 8 442 05 91
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>
>
>
>
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