Author: Romain Guillebert <romain...@gmail.com> Branch: extradoc Changeset: r5422:2e225431af6a Date: 2014-10-01 16:20 +0200 http://bitbucket.org/pypy/extradoc/changeset/2e225431af6a/
Log: More slides diff --git a/talk/pyconie2014/talk.rst b/talk/pyconie2014/talk.rst --- a/talk/pyconie2014/talk.rst +++ b/talk/pyconie2014/talk.rst @@ -1,4 +1,4 @@ -.. include:: beamerdefs.tx +.. include:: beamerdefs.txt PyPy : A fast Python Virtual Machine ==================================== @@ -73,4 +73,52 @@ - If the type of the object is different from the type in the trace, go back to the interpreter : "guard failure" -- If a guard fails too many times, optimize the trace for the other types frequently encountered +- If a guard fails too many times, generate traces for the other types frequently encountered + +Compatibility +------------- + +- Fully compatible with CPython 2.7 & 3.2 (minus bugs & implementation specific features) + +- Partial and slow support of the C-API + +- Alternatives might exist + +Ecosystem +--------- + +- Just my opinion + +- We should move away from the C-API + + * Makes assumptions on refcounting, object layout, the GIL + + * The future of Python is bound to the future of CPython (a more than 20 years old interpreter) + + * It's hard for a new Python VM without C extension support to get traction (not only PyPy) + +- This doesn't mean we should lose Python's ability to interface with C easily + +CFFI +---- + +- Where do we go from here ? + +- CFFI is a fairly new way of interacting with C in an implementation independant way + +- Very fast on PyPy + +- Decently fast on CPython + +- The Jython project is working on fast support + +CFFI +---- + +- More convenient, safer, faster than ctypes + +- Python functions can be exposed to C easily + +- Already used by pyopenssl, psycopg2cffi, pygame_cffi, lxml_cffi + +- Other tools could be built on top of it (Cython cffi backend ?) _______________________________________________ pypy-commit mailing list pypy-commit@python.org https://mail.python.org/mailman/listinfo/pypy-commit
