Author: fijal Branch: extradoc Changeset: r5595:4293181cb93f Date: 2016-01-14 12:07 +0000 http://bitbucket.org/pypy/extradoc/changeset/4293181cb93f/
Log: fix merge diff --git a/blog/draft/cffi-embedding.rst b/blog/draft/cffi-embedding.rst --- a/blog/draft/cffi-embedding.rst +++ b/blog/draft/cffi-embedding.rst @@ -6,6 +6,10 @@ Python programs, in a way that is both simple and that works across CPython 2.x and 3.x and PyPy. +This post assumes that you know what CFFI is and how to use it in +API mode (``ffi.cdef()``, ``ffi.set_source()``, ``ffi.compile()``). +A quick overview can be found here__. + The major news of CFFI 1.4, released last december, was that you can now declare C functions with ``extern "Python"``, in the ``cdef()``. These magic keywords make the function callable from C (where it is @@ -51,7 +55,7 @@ supports them, just by exporting the API expected for such plugins. This is still being finalized, but please try it out. (You can also -see `embedding.py`_ directly online for a quick glance.) Here are +see `embedding.py`_ directly online for a quick glance.) See below the instructions on Linux with CPython 2.7 (CPython 3.x and non-Linux platforms are still a work in progress right now, but this should be quickly fixed): @@ -86,30 +90,31 @@ Very similar steps can be followed on PyPy, but it requires the ``cffi-static-callback-embedding`` branch of PyPy, which you must -first translate from sources. The difference is only that you need to +first translate from sources. The difference is then that you need to adapt the first ``gcc`` command line: replace ``-lpython2.7`` with ``-lpypy-c`` and to fix the ``-I`` path (and possibly add a ``-L`` path). -Note that CPython/PyPy is automatically initialized (using locks in -case of multi-threading) the first time any of the ``extern "Python"`` +Note that CPython/PyPy is automatically initialized (using locks in case +of multi-threading) the first time any of the ``extern "Python"`` functions is called from the C program. (This should work even if two different threads call the first time a function from two *different* embedded CFFI extensions; in other words, explicit initialization is never needed). The custom initialization-time Python code you put in -``ffi.embedding_init_code()`` is executed. If this code starts to be -big, you can move it to independent modules or packages. Then the -initialization-time Python code only needs to import them. In that -case, you have to carefully set up ``sys.path`` if the modules are not -installed in the usual Python way. +``ffi.embedding_init_code()`` is executed at that time. If this code +starts to be big, you can move it to independent modules or packages. +Then the initialization-time Python code only needs to import them. In +that case, you have to carefully set up ``sys.path`` if the modules are +not installed in the usual Python way. -A better alternative would be to use virtualenv. How to do that is -not fully fleshed out so far. You can certainly run the whole program -with the environment variables set up by the virtualenv's ``activate`` -script first. There are probably other solutions that involve using -gcc's ``-Wl,-rpath=\$ORIGIN/`` or ``-Wl,-rpath=/fixed/path/`` options -to load a specific libpython or libypypy-c library. If you try it out -and it doesn't work the way you would like, please complain :-) +If the Python code is big and full of dependencies, a better alternative +would be to use virtualenv. How to do that is not fully fleshed out so +far. You can certainly run the whole program with the environment +variables set up by the virtualenv's ``activate`` script first. There +are probably other solutions that involve using gcc's +``-Wl,-rpath=\$ORIGIN/`` or ``-Wl,-rpath=/fixed/path/`` options to load +a specific libpython or libypypy-c library. If you try it out and it +doesn't work the way you would like, please complain ``:-)`` Another point: right now this does not support CPython's notion of multiple subinterpreters. The logic creates a single global Python diff --git a/sprintinfo/leysin-winter-2016/people.txt b/sprintinfo/leysin-winter-2016/people.txt --- a/sprintinfo/leysin-winter-2016/people.txt +++ b/sprintinfo/leysin-winter-2016/people.txt @@ -17,6 +17,7 @@ Manuel Jacob 20-28 Ermina Richard Plangger 20-28 Ermina Maciej Fijalkowski 20-? Ermina (big room preferred) +Ronan Lamy 20-27 Ermina? ==================== ============== ======================= **NOTE:** we might have only a single double-bed room and a big room _______________________________________________ pypy-commit mailing list pypy-commit@python.org https://mail.python.org/mailman/listinfo/pypy-commit
