John Nagle: > The concept here is that objects have an "owner", which is either > a thread or some synchronized object. Locking is at the "owner" > level. This is simple until "ownership" needs to be transferred. > Can this be made to work in a Pythonic way, without explicit > syntax? > > What we want to happen, somehow, is to > transfer the ownership of "words" from the calling thread to the object > in "putitem", and transfer it to the calling thread in "getitem". > How can this be done?
There are several people that have found ways to implement such owning of variables, for example Bartosz Milewski: http://bartoszmilewski.wordpress.com/2009/06/02/race-free-multithreading-ownership/ It requires some extra complexities, so statically typed languages usually don't implement this idea, even if it avoids bugs in user code. Implementing it in Python in a simple enough way looks like a good topic for advanced research :-) Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
