Hi all,
I have a mmap and a data structure in it. I know the structure's
location in the mmap and what structure it is. It has a ctypes
definition.
I want to initialize a ctypes object to point to a part of the mmap.
Here is my attempt:
<mmap.mmap object at 0x009FEDB8>
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\programs\Py thon25\lib\ctyp es\__init__.py" , line 318, in
pointer
return POINTER(type(in st))(inst)
File "C:\programs\Py thon25\lib\ctyp es\__init__.py" , line 262, in
POINTER
{'_type_': cls})
TypeError: _type_ must have storage info
and then use 'cast', but it fails here.
Is there some way to combine ctypes with struct.pack_int o and
struct.unpack_f rom? Can I access the mmap's buffer directly? Could
be very handy and I'm willing to talk about the C function involved.
What kind of modification to mmapmodule would we be looking at? Does
someone want to do it with me?
I am looking at mmapmodule.c, line 75, access to the char * data
member of mmap_object. Link is here:
I have a mmap and a data structure in it. I know the structure's
location in the mmap and what structure it is. It has a ctypes
definition.
I want to initialize a ctypes object to point to a part of the mmap.
Here is my attempt:
>>b
>>c= ctypes.pointer( b )
File "<stdin>", line 1, in <module>
File "C:\programs\Py thon25\lib\ctyp es\__init__.py" , line 318, in
pointer
return POINTER(type(in st))(inst)
File "C:\programs\Py thon25\lib\ctyp es\__init__.py" , line 262, in
POINTER
{'_type_': cls})
TypeError: _type_ must have storage info
and then use 'cast', but it fails here.
Is there some way to combine ctypes with struct.pack_int o and
struct.unpack_f rom? Can I access the mmap's buffer directly? Could
be very handy and I'm willing to talk about the C function involved.
What kind of modification to mmapmodule would we be looking at? Does
someone want to do it with me?
I am looking at mmapmodule.c, line 75, access to the char * data
member of mmap_object. Link is here:
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