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| author | Thomas Heller <theller@ctypes.org> | 2007-03-22 20:34:37 (GMT) |
|---|---|---|
| committer | Thomas Heller <theller@ctypes.org> | 2007-03-22 20:34:37 (GMT) |
| commit | 82730f8d11050a567c6db88c91e7d788d8048e09 (patch) | |
| tree | 69578f49cd3c21845ad7262124bdf88cc867ad16 /Modules | |
| parent | f493cbd8248650e14422ea04e1c3953fdcacd218 (diff) | |
| download | cpython-82730f8d11050a567c6db88c91e7d788d8048e09.zip cpython-82730f8d11050a567c6db88c91e7d788d8048e09.tar.gz cpython-82730f8d11050a567c6db88c91e7d788d8048e09.tar.bz2 | |
Explain the purpose of the b_needsfree flag (forward ported from release25-maint).
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/_ctypes/_ctypes.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c index cce16ca..cfff1a9 100644 --- a/Modules/_ctypes/_ctypes.c +++ b/Modules/_ctypes/_ctypes.c @@ -2181,6 +2181,12 @@ static void CData_MallocBuffer(CDataObject *obj, StgDictObject *dict) if ((size_t)dict->size <= sizeof(obj->b_value)) { /* No need to call malloc, can use the default buffer */ obj->b_ptr = (char *)&obj->b_value; + /* The b_needsfree flag does not mean that we actually did + call PyMem_Malloc to allocate the memory block; instead it + means we are the *owner* of the memory and are responsible + for freeing resources associated with the memory. This is + also the reason that b_needsfree is exposed to Python. + */ obj->b_needsfree = 1; } else { /* In python 2.4, and ctypes 0.9.6, the malloc call took about |