[Python-Dev] Removing the block stack (was Re: PEP 343 and with) (original) (raw)

"Martin v. Löwis" martin at v.loewis.de
Thu Oct 6 09:15:06 CEST 2005

Neal Norwitz wrote:

My thoughts are to dynamically allocate the Python stack memory (e.g., void *stack = malloc(128MB)). Then all calls within each thread uses its own stack. So things would be pushed onto the stack like they are currently, but we wouldn't need to do create a tuple to pass to a method, they could just be used directly. Basically more closely simulate the way it currently works in hardware.

One issue with argument tuples on the stack (or some sort of stack) is that functions may hold onto argument tuples longer:

def foo(*args): global last_args last_args = args

I considered making true tuple objects (i.e. with ob_type etc.) on the stack, but this possibility breaks it.

Regards, Martin

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