Hi All,

I'm trying to invoke povray using Java's Runtime.exec, but it isn't working.
Runtime.exec prematurely exits with dumping "core" file.
I'm using 2.4.2-2 kernel( probably RedHat 6.2).

any suggestion??

thank you.

here is my code


package edu.sfu.ensc.rendering.nodeserver.execution.runner;




/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2001
 * Company:
 * @author
 * @version 1.0
 */


import java.io.*;

public abstract class RuntimeExecutor {

  public static boolean exec(String strCommandLine)  throws Exception{

      boolean bSuccess=true;

      Process jcProc=null;
      byte[] jcErrBuf=new byte[512];
      byte[] jcOutBuf=new byte[1024];

      try {
          System.out.println(strCommandLine);

          jcProc=Runtime.getRuntime().exec(strCommandLine);

          BufferedInputStream jcStdErr=new
BufferedInputStream(jcProc.getErrorStream());
          BufferedInputStream jcStdOut=new
BufferedInputStream(jcProc.getInputStream());
          BufferedOutputStream jcStdErrCapture=null;
          BufferedOutputStream jcStdOutCapture=null;

          int nRead=0;
          nRead=jcStdErr.read(jcErrBuf);

          if(nRead>-1)  {
              while( nRead!= -1)  {
                  System.out.println("***********error "+new
String(jcErrBuf));
                  nRead = jcStdErr.read(jcErrBuf);
              }
              bSuccess=false;
          }

          nRead=jcStdOut.read(jcOutBuf);
          if(nRead>-1)  {
              while( nRead!= -1)  {
                  System.out.println("***********out "+new
String(jcErrBuf));
                  nRead = jcStdOut.read(jcOutBuf);
              }
              bSuccess=true;
          }
          jcProc.waitFor();
      } catch(Exception e)  {
          throw e;
      }
      return bSuccess;
  }

  public static void main(String[] args)  {
      try {
          RuntimeExecutor.exec("/povray/povray  -d -v +ki1.0 +kff25 +sf21
+ef25 /RenderNode/io/dyu.p3333.POVRAY.2_.pov");
      } catch (Exception e) {
          e.printStackTrace();
      }
  }




}

Post a reply to this message

Hi All, it's me again.

This is amazing!!

After many hours of frustration,
I even coded a C program that calls "system" method or "execl" method to
invoke
povray. This program is called by Java. It didn't work.
Again, I coded a bash script to invoke povray, but it didn't work either
when
Java called the bash script.
(I used Java's Runtime.exec method)

So, in summary

Java -> povray (FAIL)
Java -> C Program -> povray (FAIL)
Java -> Bash script -> povray (FAIL)

But the strange thing is that when I call the C program or Bash script
directly
on command prompt, it works. It only fails when I call them through Java.

The only thing that I can try is Java's JNI mechanism. But, I really don't
want to do this. I would rather use different rendering engine!!







david wrote:
>Hi All,
>
>I'm trying to invoke povray using Java's Runtime.exec, but it isn't working.
>Runtime.exec prematurely exits with dumping "core" file.
>I'm using 2.4.2-2 kernel( probably RedHat 6.2).
>
>any suggestion??
>
>thank you.
>
>here is my code
>
>
>package edu.sfu.ensc.rendering.nodeserver.execution.runner;
>
>
>
>
>/**
> * Title:
> * Description:
> * Copyright:    Copyright (c) 2001
> * Company:
> * @author
> * @version 1.0
> */
>
>
>import java.io.*;
>
>public abstract class RuntimeExecutor {
>
>  public static boolean exec(String strCommandLine)  throws Exception{
>
>      boolean bSuccess=true;
>
>      Process jcProc=null;
>      byte[] jcErrBuf=new byte[512];
>      byte[] jcOutBuf=new byte[1024];
>
>      try {
>          System.out.println(strCommandLine);
>
>          jcProc=Runtime.getRuntime().exec(strCommandLine);
>
>          BufferedInputStream jcStdErr=new
>BufferedInputStream(jcProc.getErrorStream());
>          BufferedInputStream jcStdOut=new
>BufferedInputStream(jcProc.getInputStream());
>          BufferedOutputStream jcStdErrCapture=null;
>          BufferedOutputStream jcStdOutCapture=null;
>
>          int nRead=0;
>          nRead=jcStdErr.read(jcErrBuf);
>
>          if(nRead>-1)  {
>              while( nRead!= -1)  {
>                  System.out.println("***********error "+new
>String(jcErrBuf));
>                  nRead = jcStdErr.read(jcErrBuf);
>              }
>              bSuccess=false;
>          }
>
>          nRead=jcStdOut.read(jcOutBuf);
>          if(nRead>-1)  {
>              while( nRead!= -1)  {
>                  System.out.println("***********out "+new
>String(jcErrBuf));
>                  nRead = jcStdOut.read(jcOutBuf);
>              }
>              bSuccess=true;
>          }
>          jcProc.waitFor();
>      } catch(Exception e)  {
>          throw e;
>      }
>      return bSuccess;
>  }
>
>  public static void main(String[] args)  {
>      try {
>          RuntimeExecutor.exec("/povray/povray  -d -v +ki1.0 +kff25 +sf21
>+ef25 /RenderNode/io/dyu.p3333.POVRAY.2_.pov");
>      } catch (Exception e) {
>          e.printStackTrace();
>      }
>  }
>
>
>
>
>}
>

Post a reply to this message

In article <web.3de02837d5d7fad2fe4e4f170@news.povray.org> , "david" 
<dav### [at] hotmailcom> wrote:

> Hi All, it's me again.

Please do not multi-post in our groups. I removed your post in p.programming
as your problem is Unix specific.

As far as you problem is concerned, did you perhaps forgot to specify "-d"
on the command-line for POV-Ray?  Others seem to have had similar problems
with scripts and remote execution and the like (what rights does a program
started through Java have?) and reading through the messages of the last few
month in this group may yield useful hints.

    Thorsten

____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org

Post a reply to this message

Hi

Thanks for the help.
However, it is still not working.
Every executable involved belong to root user and I do use -d option.
I looked through many messages posted here, but didn't find anything
that directly relates me. Nevertheless, I tried whatever I could find
from the past indirectly related postings, and I still couldn't figure...

frustrated..



Thorsten Froehlich wrote:
>In article <web.3de02837d5d7fad2fe4e4f170[at]news.povray.org> , "david"
><dav### [at] hotmailcom> wrote:
>
>> Hi All, it's me again.
>
>Please do not multi-post in our groups. I removed your post in p.programming
>as your problem is Unix specific.
>
>As far as you problem is concerned, did you perhaps forgot to specify "-d"
>on the command-line for POV-Ray?  Others seem to have had similar problems
>with scripts and remote execution and the like (what rights does a program
>started through Java have?) and reading through the messages of the last few
>month in this group may yield useful hints.
>
>    Thorsten
>
>____________________________________________________
>Thorsten Froehlich
>e-mail: mac### [at] povrayorg
>
>I am a member of the POV-Ray Team.
>Visit POV-Ray on the web: http://mac.povray.org
>

Post a reply to this message

I compiled PovRay on Solaris WITH OUT X support and I use Java
Runtime.getRuntime().exec() to invoke it with out any problems. My java code
also runs on Windows and has no problem except that you need to add the
/EXIT as one of the cmdline args (so it exits when it is done).

Process process = Runtime.getRuntime().exec(POVRAY + " " +
options.substring(4)); //remove the data keyword

I am writing (currently functional) a distributed renderer using  Java,
Povray and some C++ (to recombine the output) and I will be testing on some
Linux nodes (currently all the nodes are Sparc/Solaris) in the next 1-2
weeks. So I will let you know if my Java code holds up or fails.

-James


"david" <dav### [at] hotmailcom> wrote in message
news:web.3ddff8cb18780cfafe4e4f170@news.povray.org...
>
> Hi All,
>
> I'm trying to invoke povray using Java's Runtime.exec, but it isn't
working.
> Runtime.exec prematurely exits with dumping "core" file.
> I'm using 2.4.2-2 kernel( probably RedHat 6.2).
>
> any suggestion??
>
> thank you.
>
> here is my code
>
>
> package edu.sfu.ensc.rendering.nodeserver.execution.runner;
>
>
>
>
> /**
>  * Title:
>  * Description:
>  * Copyright:    Copyright (c) 2001
>  * Company:
>  * @author
>  * @version 1.0
>  */
>
>
> import java.io.*;
>
> public abstract class RuntimeExecutor {
>
>   public static boolean exec(String strCommandLine)  throws Exception{
>
>       boolean bSuccess=true;
>
>       Process jcProc=null;
>       byte[] jcErrBuf=new byte[512];
>       byte[] jcOutBuf=new byte[1024];
>
>       try {
>           System.out.println(strCommandLine);
>
>           jcProc=Runtime.getRuntime().exec(strCommandLine);
>
>           BufferedInputStream jcStdErr=new
> BufferedInputStream(jcProc.getErrorStream());
>           BufferedInputStream jcStdOut=new
> BufferedInputStream(jcProc.getInputStream());
>           BufferedOutputStream jcStdErrCapture=null;
>           BufferedOutputStream jcStdOutCapture=null;
>
>           int nRead=0;
>           nRead=jcStdErr.read(jcErrBuf);
>
>           if(nRead>-1)  {
>               while( nRead!= -1)  {
>                   System.out.println("***********error "+new
> String(jcErrBuf));
>                   nRead = jcStdErr.read(jcErrBuf);
>               }
>               bSuccess=false;
>           }
>
>           nRead=jcStdOut.read(jcOutBuf);
>           if(nRead>-1)  {
>               while( nRead!= -1)  {
>                   System.out.println("***********out "+new
> String(jcErrBuf));
>                   nRead = jcStdOut.read(jcOutBuf);
>               }
>               bSuccess=true;
>           }
>           jcProc.waitFor();
>       } catch(Exception e)  {
>           throw e;
>       }
>       return bSuccess;
>   }
>
>   public static void main(String[] args)  {
>       try {
>           RuntimeExecutor.exec("/povray/povray  -d -v +ki1.0 +kff25 +sf21
> +ef25 /RenderNode/io/dyu.p3333.POVRAY.2_.pov");
>       } catch (Exception e) {
>           e.printStackTrace();
>       }
>   }
>
>
>
>
> }
>
>

Post a reply to this message