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I’m going to post this here mostly for my own memory. I’m guessing it is actually described somewhere but I had to have the help of a colleague to get this to work.

Problem:

I have a thread that is displayed in a TableViewer in my Eclipse RCP application. This thread has a status and will change its status as necessary and I want the status to be displayed in the TableViewer, however I keep getting an Illegal Thread Access Exception when I perform the TableViewer.refresh() or TableViewer.update(Object, String[]) calls.

The Fix:

The proper way to fix this is in your own update or refresh function to create a local “Runnable” class that will perform the update. Here’s some code to show you what I mean:

@Override
public void update(Object o)
{
     // This will update a specific object in the TableViewer without reloading the entire model.
     Display.getDefault().asyncExec(new Runnable() {
                @Override
                 public void run()
                 {
                        MyClass.this.viewer.update(o, null);
                 }
     });
}

There are some more parts to this to prevent errors but this is the basics.