On Fri, Jan 14, 2011 at 1:59 AM, Andrew Francis <[email protected]> wrote: > Richard I am researching how greenlets work. A part of this is actually > looking at the code with a debugger. However I do not see a problem with also > asking questions and starting a conversation on this otherwise quiet mailing > list. If anyone can provide insights, that would be great. I guess that I am > interested in is that I do not see the any alteration to ceval.c. I need to > understand more about what is on the C stack to move beyond a superficial > understanding of hard switching. I am interested in part because I want to > see if this technique can be extended to PyPy-C.
Think of soft switching like getting the Python interpreter to switch what Python code it is executing. And hard switching like getting the processor the Python interpreter is running on to switch what assembly instructions it is executing. For the former, you much around with ceval and Python frames. For the latter you just put new values into the PC and SP registers - it is that simple. I hope that clears up the misconception you have above. Cheers, Richard. _______________________________________________ Stackless mailing list [email protected] http://www.stackless.com/mailman/listinfo/stackless
