[Freeciv-Dev] Re: (PR#7229) Re: Re: Freeciv commit: ali: Add macro is_city_hilited().

["Jason Short" <jshort@xxxxxxxxxxxxxx>]

<URL: http://rt.freeciv.org/Ticket/Display.html?id=7229 >


>> 2.  Freeciv clients are single-threaded, so there will never be an
>> interrupt to change the value at L1.
>
> We could have one.

Surely we could.  But if a threaded interrupt could ever change the value
of the focus unit, we would need lots of locking everywhere, and neither
form of the code would be safe without locking.

> In PR#4289 Pixel Scroller I set out to introduce a GDK timer with its
> own simple concept of timeslicing to gurantee screen updates every
> ~1/60 second. I would eventually just make sure nothing is changed
> there that I don't have complete control over, rather than using
> mutexes.

Using a GDK timer doesn't add any additional threads.  Nor will it
interrupt existing code with the timer.

GTK/GDK may use extra threads in the backend, but unless you specifically
thread your application this won't affect the program's code.

jason