RE: [Jython-users] Synchronizing a method in a class in a thread

[Jeff E. <JEm...@lg...>]

>I asked the question again because I thought the make_synchronize() 
>method would only work for a thread that was created using the 
>start_new_thread() method, and not using the Java Thread object.

That's a fair assumption.

Since the jython documentation is somewhat lacking in areas, I
often refer to the source code to understand how something works.
The source for make_synchronized is pretty simple:

    public static PyObject make_synchronized(PyObject callable) {
        return new SynchronizedCallable(callable);
    }

and SynchronizedCallable has a __call__ operator to call
the argument callable's __call__ meethod  in a synchronized
block like this:

        synchronized(synchronize._getSync(arg)) {
            return callable.__call__(arg);
        }

Since this is synchronized in Java, it will be thread-safe for
Java threads.