RE: scheduling order

Thanks for the reply.
Attached is a sample file to demonstrate this.
There is 3 commented lines ABC - use only one at a time.

If you uncomment line #A the behaviour is a direct call and order is
preserved (top to bottom coloring).

If you uncomment line #B the bahaviour is also preserved - this is my
own scheduling using the init method and a timer.

If you uncomment line #C the behaviour is not preserved - this is the
scheduler.

Marcin

> -----Original Message-----
> From: [email protected]
[mailto:[email protected]]
> On Behalf Of jon klein
> Sent: December 16, 2003 12:04 PM
> To: [email protected]
> Subject: Re: [breve] scheduling order
> 
> 
> On Dec 16, 2003, at 1:20 PM, Marcin Pilat wrote:
> 
> > Direct call:
> >
> > If RunMeFirst directly calls the RunMe method, then obviously the
> > evaluation order of the objects' RunMe method is preserved based on
> > the RunMeFirst method.
> >
> > Schedule call:
> >
> > If RunMeFirst calls the scheduler to schedule the RunMe method after
a
> > fixed time (eg. 1) then the evaluation order of RunMe is independent
> > on the evaluation order of RunMeFirst.
> 
> I'm not sure that I fully understand the problem you're having, but I
> think what you're describing is the expected behavior.  I also see how
> it could be problematic.
> 
> In general, the execution order of things scheduled for the same time
> by the breve engine is undefined.  So if you have two objects
> scheduling a method call for the same time, you can't rely on one
being
> called before the other.  This applies to other methods the engine
> calls as well, such as the "iterate" method.
> 
> When execution order is important, generally the best thing to do is
> call the methods explicitly from another object which will manage the
> execution (for example, the Controller object might be used).  So
> instead of scheduling  RunMe for both of the objects, you would
> schedule a call for the manager object, which will in turn call the
> RunMe method for both objects.
> 
> That said, I see how it could become tedious--it should be relatively
> straightforward to change the order of the scheduled method calls in
> breve, so I'll look into that.
> 
> - jon klein
> 
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