[Jruby-devel] Threading and Variables

[Werner Schuster (murphee)]

hi there,

I think I've found another problem with 0.8.3 and threading.
I attached a test class that reproduces the problem, but basically:
- I create a variable in one thread A (ie. Ruby code "a =1")
- I start another thread B, then try to access the variable on it (Ruby 
code "p a"),
  and this will complain about an unknown variable
- etc.
Ie. Ruby variables behave like threadlocal variables.

I'm running a selfcompiled version of CVS HEAD from yesterday (13th 
April), although
I don't know how uptodate that is (considering SFs slow anon CVS).

Can someone reproduce this or is this fixed and the code is just not 
committed to CVS?

Thanks,

murphee
--
Blog @ http://jroller.com/page/murphee
Maintainer of EclipseShell @ http://eclipse-shell.sourceforge.net/

import org.jruby.IRuby;
import org.jruby.Ruby;

public class TestVariableCreation {

	public static IRuby r;
	public static Object object;
	public static void main(String[] args) {
		r = Ruby.getDefaultInstance();
		// define new method
		r.evalScript("def foo\n \"Hello\" \n end");
		r.evalScript("a = 1\n");
		r.evalScript("p a");
		
		// will run on non main thread
		Runnable run = new Runnable(){
			public void run(){
				try {
				object = r.evalScript("p a");
				} catch(Exception ex){
					System.out.println(ex);
				}
				object = r.evalScript("a=2");
				
				object = r.evalScript("p a");
			}
		};
		Thread n = new Thread(run);
		System.out.println("--------------- Calling Foo on Non-Main Thread --------------");
		n.start();		
		try {
			n.join();
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
//			e.printStackTrace();
		}
		
		
		// Now from the same thread
		System.out.println("----------- Calling from Thread ---------------");
		object = r.evalScript("p a");
		

	}

}