[Stackless] General "stackless changes to the python app" question
richard.m.tew at gmail.com
Wed Sep 12 11:56:44 CEST 2007
On 9/11/07, Michael Brian Bentley <bentley at crenelle.com> wrote:
> I've skimmed the various sources of information for stackless. I
> generally understand what stackless provides, but I'm not clear
> enough on what changes to the python source are made to convert
> python into stackless python. Is there a brief description, something
> other than a diff, that describes the changes? Either way I'll
> probably do a diff and start reading the relevant inline comments --
> if any.
Most of the changes are isolated into the 'Stackless' directory and
module in the Stackless source code. These include:
- The scheduler.
- Pickling support.
- Hard switching (the assembler which shifts off stack portions).
There are however some modifications to the main Python code. These include:
- Soft switching (the changes which detect an unwind token and allow
stack frames to be unwound).
- Profiling and debugging. These are changed to be per-tasklet,
rather than per-thread.
Hope this helps,
More information about the Stackless