Message10982

This is way worse a situation that I'd thought - I'd assumed so far that I could just call thread.interrupt and abort any PythonInterpreter.exec() and then just create new PythonInterpreters and carry on.

This is not the case - after a thread.interrupt(), the whole VM is broken and cannot exec any more python, even if new PythonInterpreters are instantiated!!

Sample code that demonstrates the problem:

    PythonInterpreter pi = new PythonInterpreter();

    Thread jythonThread = new Thread(() -> {
      try {
        pi.exec("while 1: print 'hello'");
      }
      catch (org.python.core.PyException e) {
        PythonInterpreter pi2 = new PythonInterpreter();
        pi2.exec("print 'hello again'"); // THROWS a org.python.core.PyException - WHY?!
      }
    });

    jythonThread.setName("jythonThread");
    jythonThread.start();

    new Thread(() -> {
      try {
        Thread.sleep(500);
        jythonThread.interrupt();
      }
      catch (InterruptedException e) {
        e.printStackTrace();
      }
    }).start();