Openmodelica & Netbeans on Mac OSX Mavericks

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Openmodelica & Netbeans on Mac OSX Mavericks

Openmodelica & Netbeans on Mac OSX Mavericks

Dec-01-13 22:59:26

Hello,

I'm trying to use the OpenModelica Java interface on my Macbook Air running Mac OS X 10.9 Mavericks.
I use OpenModelica release 17983 (1.9.1+dev) and I'm programming using Netbeans IDE with JDK 1.7 update 45.

I tried the following code to check if everything works:

Code:


package javaapplication1;



import org.openmodelica.corba.ConnectException;

import org.openmodelica.corba.OMCProxy;



public class JavaApplication1 {



    /**

     * @param args the command line arguments

     * @throws org.openmodelica.corba.ConnectException

     */

    public static void main(String[] args) throws ConnectException {

        // TODO code application logic here

        OMCProxy omc = new OMCProxy("bdezhohidhoz");

        omc.sendExpression("cd()");

        omc.stopServer();

    }   

}

When I run the application, I get the following error :

Code:


run:

Warning: 'Mac OS X' not officialy supported OS

Exception in thread "main" org.openmodelica.corba.ConnectException: Unable to start the Open Modelica Compiler. Waited for 5 seconds, but it didn't respond.

    at org.openmodelica.corba.OMCProxy.startServer(OMCProxy.java:336)

    at org.openmodelica.corba.OMCProxy.init(OMCProxy.java:421)

    at org.openmodelica.corba.OMCProxy.sendExpression(OMCProxy.java:497)

    at javaapplication1.JavaApplication1.main(JavaApplication1.java:25)

Java Result: 1

BUILD SUCCESSFUL (total time: 5 seconds)

OPENMODELICAHOME variable is set to "/opt/openmodelica/bin".

Could you pls help me fixing this error ?

Thanks in advance, best,

dcasner: 27 Posts; Thank you [ 0 ]

#3933 Permalink

Re: Openmodelica & Netbeans on Mac OSX Mavericks

Dec-02-13 02:07:34

It should be /opt/openmodelica if anything (I'm unsure if the Java stuff includes workarounds to try and find omc anyway)

sjoelund.se: 1700 Posts; Thank you [ 159 ]

#3935 Permalink

Re: Openmodelica & Netbeans on Mac OSX Mavericks

Dec-02-13 12:40:28

Hello,
Thanks for your reply.
The Java library includes workarounds to try and find omc executable.

It finds :
omcBinary = /opt/openmodelica/bin/omc
omcWorkingDirectory = /opt/openmodelica

I checked the library and it tries to create a file named "/tmp/openmodelica." + username + ".objid." + corbaSessionName
But when I check in the tmp folder, there is no openmodelica.xxx file.
It seems omc fails creating tmp file :

Code:

int ticks = 0;

    while(!f.exists())

    {

      try

      {

        Thread.sleep(100);

      }

      catch(InterruptedException e)

      {

        /* ignore */

      }

      ticks++;



      /* If we've waited for around 5 seconds, abort the wait for OMC */

      if(ticks > 50)

      {

        logOMCStatus("No OMC object reference file created after " +

        "approximately 5 seconds.");

        logOMCStatus("It seems OMC does not want to come up, giving " +

        "up.");

        throw new ConnectException

        ("Unable to start the Open Modelica Compiler. Waited for 5"

            +" seconds, but it didn't respond.");

      }

    }

Is it an issue regarding permissions for the tmp folder which currently are:

lrwxr-xr-x@ 1 root wheel 11 26 oct 21:28 tmp -> private/tmp

And private/tmp :
drwxrwxrwt 11 root wheel 374 2 déc 09:54 tmp

Thanks in advance.

Best,

dcasner: 27 Posts; Thank you [ 0 ]

#3936 Permalink

Re: Openmodelica & Netbeans on Mac OSX Mavericks

Dec-02-13 12:45:40

Then you need to set the TMPDIR env.var because the tmp directory is not /tmp on OSX.

sjoelund.se: 1700 Posts; Thank you [ 159 ]

#3937 Permalink

Re: Openmodelica & Netbeans on Mac OSX Mavericks

Dec-02-13 13:51:44

I added an osType in OMCProxy.java to consider TMPDIR environment variable for OSX.
There also was an issue regarding my firewall which blocked Corba connection between Java and omc.

Do you know if it is possible to use Corba interface without completely switching off my firewall ?