[Jason-users] Fwd: Create a timer based on seconds in Cartago

[Burak K. <bbu...@gm...>]

---------- Forwarded message ---------
Gönderen: Burak Karaduman <bbu...@gm...>
Date: 6 Haz 2022 Pzt, 16:36
Subject: Re: [Jason-users] Create a timer based on seconds in Cartago
To: Jomi Hubner <jom...@gm...>


Hi Jomi,

I had solved my problem as you suggested. Thank you so much for your help.
I share the solution I hope it can help others in the future.



* this.beginExternalSession(); commit(); this.endExternalSession(false);*

However, I have another question, I have a function which is encapsulated
inside an artefact namely getUDPMessage(). However, this should be
continuously checked in case of data is sent anytime. Is it possible to
attach a feature for continuously listening a function of an artifact?

Best regards.

Jomi Hubner <jom...@gm...>, 6 Haz 2022 Pzt, 14:08 tarihinde şunu
yazdı:

> Hi Burak,
>
> I guess that instructions that change the state of the artifact (obs
> props/signals) have to be executed in a special way in cartago to avoid
> breaking its atomicity/transactional features.
>
> if a thread of yours is changing the artifact, the change should be
> executed inside a block beginExternalSession/endExternalSession. In your
> code, the thread is created inside this block, but the signal is not
> running inside such a block. Maybe you can move the begin/end… to inside
> the “run()” method.
>
> HTH
>
> Jomi
>
> > On 5 Jun 2022, at 19:18, Burak Karaduman <bbu...@gm...>
> wrote:
> >
> > Dear all,
> >
> > I am trying to create a timer that counts based on seconds. However, I
> am getting this error;
> >
> > java.lang.IllegalMonitorStateException
> > at
> java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.signalAll(AbstractQueuedSynchronizer.java:1487)
> > at cartago.Artifact.commitObsStateChangesAndSignal(Artifact.java:573)
> > at cartago.Artifact.signal(Artifact.java:637)
> > at example_JaCaMo.MyTimer.access$000(MyTimer.java:11)
> > at example_JaCaMo.MyTimer$1.run(MyTimer.java:29)
> > at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
> > at java.base/java.util.TimerThread.run(Timer.java:506)
> >
> > My code is simply like this:
> >
> > public class MyTimer extends Artifact {
> >
> > void init() {
> > defineObsProperty("mytimer", 0);
> > timer_creation();
> > }
> >
> > void timer_creation() {
> >   this.beginExternalSession();
> >
> > Timer timer = new Timer();
> >
> > TimerTask task = new TimerTask(){
> >     private int i = 0;
> >     public void run(){
> >         if (i <= 30) {
> >         signal("timerEnd");
> >         System.out.println(i);
> >
> >         }
> >     }
> > };
> >
> >
> > timer.scheduleAtFixedRate(task, 0, 1000); //1000ms = 1sec
> > this.endExternalSession(true);
> > }
> > }
> >
> > How can I tackle this problem?
> >
> > Thank you.
> >
> > Best regards.
> >
> >
> >
> > --
> > Burak KARADUMAN,
> > Ph.D. Student at the University of Antwerp & Flanders Make,
> > Modeling Intelligent Complex Software & Systems (MICSS-Lab),
> > G236, Department of Computer Science, Faculty of Science, Campus
> Middelheim,
> > Middelheimlaan 1, 2020 Antwerp, Belgium
> >
> > _______________________________________________
> > Jason-users mailing list
> > Jas...@li...
> > https://lists.sourceforge.net/lists/listinfo/jason-users
>
>

-- 

*Burak KARADUMAN,*
Ph.D. Student at the University of Antwerp & Flanders Make,
Modeling Intelligent Complex Software & Systems (MICSS-Lab),
*G236, Department of **Computer Science**, Faculty of Science, Campus
Middelheim,*
Middelheimlaan 1, 2020 Antwerp, Belgium



-- 

*Burak KARADUMAN,*
Ph.D. Student at the University of Antwerp & Flanders Make,
Modeling Intelligent Complex Software & Systems (MICSS-Lab),
*G236, Department of **Computer Science**, Faculty of Science, Campus
Middelheim,*
Middelheimlaan 1, 2020 Antwerp, Belgium