Hi,
I've managed to fix it. The problem was that sometimes, the method
Object.wait(timeout) was called with timeout = 0. According to java
documentation:
" If timeout is zero, however, then real time is not taken into
consideration and the thread simply waits until notified."
A small patch on SDFDirector.java fixed this:
=========
441c441,442
< _workspace.wait(this, timeToWait);
---
> if (timeToWait > 0)
> _workspace.wait(this, timeToWait);
=========
The way this part of the code is implemented is rather odd however. I
wonder why there is a while(true) loop if, anyway, we are calling the
wait() method. Clearly, the while loop will always run just once. I
guess we could simplify the code by removing the while loop.
Cheers,
++js
JS wrote:
Hi all,
I'm currently testing the real-time possibilities of PtII. I'm running
under Eclipse with a Mac Book Pro. When trying to execute the
following test app, I get a strange behavior: after some time (not
always the same) the application stalls. That is, I get output like:
"hello world"
"hello world"
"hello world"
"hello world"
... and then nothing. The number of iterations before it stops is not
always the same.
Please tell me if you need further details or if there is something I
forgot to write in my code.
Thanks,
++ js
== class SDFSimpleTest ==
import ptolemy.actor.TypedCompositeActor;
import ptolemy.kernel.util.IllegalActionException;
import ptolemy.kernel.util.NameDuplicationException;
import ptolemy.domains.sdf.kernel.SDFDirector;
import ptolemy.actor.Manager;
import ptolemy.actor.lib.StringConst;
import ptolemy.actor.lib.Writer;
public class SDFSimpleTest {
public static void main(String[] args) throws
NameDuplicationException, IllegalActionException {
TypedCompositeActor top = new TypedCompositeActor();
// Create the director.
SDFDirector director = new SDFDirector(top, "director");
director.period.setExpression("0.001");
director.synchronizeToRealTime.setExpression("true");
Manager manager = new Manager("manager");
top.setManager(manager);
// Create two actors.
StringConst reader = new StringConst(top, "reader");
reader.value.setExpression("hello world");
Writer writer = new Writer(top, "writer");
top.connect(reader.output, writer.input);
top.getManager().startRun();
}
}
--
J. S. Senécal
http://drone.ws
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