Re: [eclipse-clp-users] Events

I tried to followings (for a file called sched.ecl):

		/* Include a user defined search procedure + scheduling */
		constraint = ec_term(ec_did("create_module", 1),
ec_atom(ec_did("sched", 0)));
		/* Record the constraint into the CLP engine */
		ec_post_goal(constraint);

		/* Include a user defined search procedure + scheduling */
		constraint = ec_term(ec_did("use_module", 1),
ec_atom(ec_did("sched", 0)));
		/* Record the constraint into the CLP engine */
		ec_post_goal(constraint);

It seems that ec_resume return the PTHROW error which I don't know what
means.

Can you please help with a piece a code which loads the desired file with
the desired clp code in it ?

Thanks,
Bogdan.

-----Original Message-----
From: Kish Shen [mailto:kisshen_at_cisco.com] 
Sent: 27 ianuarie 2012 04:05
To: Bogdan Tanasa
Cc: eclipse-clp-users_at_lists.sourceforge.net
Subject: Re: [eclipse-clp-users] Events

Hi Bogdan,

First, let me repeat what I have said in my answers to some of your 
previous posts about using C and ECLiPSe: ECLiPSe is *not* a C solver 
library  -- this still seem to be what you are trying to do, as (if I 
understood you correctly), you are trying to call bb_min from C, and 
this is almost certainly not the right level at which the C interface 
should be used (i.e. the bb_min should be called by your ECLiPSe code, 
so you write most of your code in ECLiPSe, and only call the top-level 
goal from C).

As for your question, I am not sure I understand you: you call an 
ECLiPSe goal from C by posting it, and then calling ec_resume() to pass 
control to ECLiPSe, which then execute the goal(s) you posted, and when 
it has finished (returned a solution, or otherwise terminated (failed or 
aborted)), control is returned to C, i.e. you return from the call to 
ec_resume(), so you have no need to have any signal from ECLiPSe to C to 
tell you that the goal have finished -- there is only a single thread of 
execution, and control is passed between ECLiPSe and C. Have I 
misunderstood what you wanted?

Note that the C and C++ interfaces are essentially the same in ECLiPSe 
-- the C++ interface is essnetially just a C++ wrapper layer around the 
C interface, so you can read the chapters on the C++ interface in the 
Embedding and Interfacing manual to understand the C interface as well.

Cheers,

Kish

On 26/01/2012 13:36, Bogdan Tanasa wrote:
> Hi,
>
>
>
> I am interested if there is a way to signal events to a C application when
a
> goal posted in eclipse has finished.
>
> For example inside bb_min a search method is called. Every time when the
> search produces a valid solution I would to notify the C application and
do
> some processing.
>
>
>
> Thanks,
>
> Bogdan.
>
>
>
>
>
>
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