Victor Stinner schrieb: > Le Friday 31 October 2008 14:13:01 Christian Heimes, vous avez écrit : >> ctypes is also missing utilities to write code that works on 32 and >> 64bit platforms. Without a tool like >> http://pypi.python.org/pypi/ctypes_configure it's very hard and tedious >> to avoid and fix segfaults. > > I wrote some ctypes binding and some ctypes tools are missing. The most > important lacks are: > - get_errno() > - size_t and <stdint.h> types > > You may be interrested by my modules:
Some of the problems you list here have already been fixed in Python 2.6: > > get errno value: > http://python-ptrace.hachoir.org/trac/browser/trunk/ptrace/ctypes_errno.py > (ctypes_support has a get_errno function) A new calling convention has been added for *safe* access to errno. > open the C library: > http://python-ptrace.hachoir.org/trac/browser/trunk/ptrace/ctypes_libc.py > (ok, code is trivial, it's not critical to integrate it to ctypes) This code is not in ctypes, but with Python2.6 it will also work on windows. > *size_t* and <stdint.h> types! > http://python-ptrace.hachoir.org/trac/browser/trunk/ptrace/ctypes_stdint.py > (my module is incomplete, some types are missing) Well, the signed types are named c_int8, c_uint8, and so on. size_t is named c_size_t, please look into Lib/ctypes/__init__.py. IIRC, these types are present event longer. > Some functions to ease ctypes development: > http://python-ptrace.hachoir.org/trac/browser/trunk/ptrace/ctypes_tools.py > - bytes2type() and bytes2array() are useful to convert a bytes array > to a ctypes object There are also new ctypes methods in Python 2.6 .from_buffer() and .from_buffer_copy() which should cover this use case. An example from your module: > 124 def bytes2type(bytes, type): > 125 """ > 126 Cast a bytes string to an objet of the specified type. > 127 """ > 128 return cast(bytes, POINTER(type))[0] > 129 Personally I would prefer to spell out 'cast(bytes, POINTER(type))[0]' instead of documenting and learning what bytes2type() does. > Should I open issues? > Please decide yourself. Thanks, Thomas _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
