[Python-ideas] Optimistic Concurrency

Leonardo Santagada santagada at gmail.com
Mon Oct 20 22:33:11 CEST 2008

On Oct 20, 2008, at 6:12 PM, Adam Olsen wrote:

> Stepping back a bit, there's two distinct problems to solve:
> 1) Making threading easier
> 2) Removing the GIL
> #1 can be done by things like monitors and transactions (the two are
> complementary).  #2 at its core is about refcounting, and transactions
> are irrelevant there — you need to switch to a tracing-based GC
> implementation

PyPy has a real GC and doesn't depend on refcount already. So that is  
not the only thing needed to accomplish #2, you need to lock mutable  
data containers so concurrent threads don't leave them in a broken  
state. This is the part not ready on PyPy yet.

But it is probably easier to fix on PyPy than on CPython.

Leonardo Santagada
santagada at gmail.com

More information about the Python-ideas mailing list