The memory is not temporary, I am passing it out as an array, thus the
malloc/free route will require double allocation(once for malloc/free,
once for array.array). I am not using string because when I tried to
pass the data in as string, pyrex complained about the conversion.
However, I could probably use the same PyObject_AsReadBuffer function
call to get at the data passed in to the function as a string and then
pass it out as a string as well using the interface suggested (
PyString_FromStringAndSize and PyString_AsString ). Perhapse I need
to substitute PyObject_AsWriteBuffer instead of PyString_AsString in
order for my changes to get propegated back to the string object?
-Chris
On 6/8/05, Adam Langley <[EMAIL PROTECTED]> wrote:
> On 6/8/05, Chris Lambacher <[EMAIL PROTECTED]> wrote:
> > My question is, is there a better way to
> > allocate the memory for the array.array object than:
> > a = array.array('B', [0] * (pixels * 2))
>
> cdef unsigned char *buffer
> temp_string = PyString_FromStringAndSize(NULL, length)
> buffer = <unsigned char *> PyString_AsString(temp_string)
>
> That's one way to do it. But it looks like you just want an area of
> memory so why not:
>
> cdef extern from "stdlib.h":
> ctypedef unsigned long size_t
> void *malloc(size_t size)
> void free(void *mem)
>
> ?
>
> AGL
>
> --
> Adam Langley [EMAIL PROTECTED]
> http://www.imperialviolet.org (+44) (0)7906 332512
> PGP: 9113 256A CC0F 71A6 4C84 5087 CDA5 52DF 2CB6 3D60
>
--
Christopher Lambacher
[EMAIL PROTECTED]
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