Paul Rubin wrote:
Bryan Olson writes:
BTW, class instances are usually immutable and thus don't require a
mutex in the system I described.
Then you are describing a language radically different from Python.
That one threw me for a minute too, but I think the idea is that the
class instance itself is immutable, while its slots (specifically the
attribute dictionary) point to mutable objects.
The meaning of 'immutable' is well-established in the Python literature.
Python's immutable types include tuple, frozenset, and various kinds of
numbers and strings. Class instances, not so much.
What's more, this matters when considering a GIL-less implementation.
Typical method calls can traverse lots of mutable stuff just to find the
function to invoke.
--
--Bryan
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