[Python-checkins] r66048 - python/trunk/Doc/whatsnew/2.6.rst
andrew.kuchling
python-checkins at python.org
Wed Aug 27 02:45:03 CEST 2008
Author: andrew.kuchling
Date: Wed Aug 27 02:45:02 2008
New Revision: 66048
Log:
Add an item and a note
Modified:
python/trunk/Doc/whatsnew/2.6.rst
Modified: python/trunk/Doc/whatsnew/2.6.rst
==============================================================================
--- python/trunk/Doc/whatsnew/2.6.rst (original)
+++ python/trunk/Doc/whatsnew/2.6.rst Wed Aug 27 02:45:02 2008
@@ -1053,8 +1053,7 @@
of arrays so that callers can write data directly into an array instead
of going through a slower API. This PEP updates the buffer protocol in light of experience
from NumPy development, adding a number of new features
-such as indicating the shape of an array,
-locking memory .
+such as indicating the shape of an array or locking a memory region.
The most important new C API function is
``PyObject_GetBuffer(PyObject *obj, Py_buffer *view, int flags)``, which
@@ -1063,10 +1062,11 @@
about the object's memory representation. Objects
can use this operation to lock memory in place
while an external caller could be modifying the contents,
-so there's a corresponding
-``PyBuffer_Release(Py_buffer *view)`` to
+so there's a corresponding ``PyBuffer_Release(Py_buffer *view)`` to
indicate that the external caller is done.
+.. XXX PyObject_GetBuffer not documented in c-api
+
The **flags** argument to :cfunc:`PyObject_GetBuffer` specifies
constraints upon the memory returned. Some examples are:
@@ -1078,7 +1078,8 @@
requests a C-contiguous (last dimension varies the fastest) or
Fortran-contiguous (first dimension varies the fastest) layout.
-.. XXX this feature is not in 2.6 docs yet
+Two new argument codes for :cfunc:`PyArg_ParseTuple`,
+``s*`` and ``z*``, return locked buffer objects for a parameter.
.. seealso::
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