Merged revisions 85075 via svnmerge from

pitrou · pitrou · commit 6db43fdb3bbe · 2010-09-28T21:53:46.000Z
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r85075 | antoine.pitrou | 2010-09-28 23:52:30 +0200 (mar., 28 sept. 2010) | 3 lines

  Discourage use of the old buffer API funcs
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diff --git a/Doc/c-api/objbuffer.rst b/Doc/c-api/objbuffer.rst
@@ -1,6 +1,21 @@
 .. highlightlang:: c
 
-.. _abstract-buffer:
+Old buffer API
+--------------
+
+.. deprecated:: 3.0
+
+These functions were part of the "old buffer protocol" API in Python 2.
+In Python 3, these functions are still exposed for ease of porting code.
+They act as a compatibility wrapper around the :ref:`new buffer API
+<bufferobjects>`, but they don't give you control over the lifetime of
+the resources acquired when a buffer is exported.
+
+Therefore, it is recommended that you call :cfunc:`PyObject_GetBuffer`
+(or the ``y*`` or ``w*`` :ref:`format codes <arg-parsing>` with the
+:cfunc:`PyArg_ParseTuple` family of functions) to get a buffer view over
+an object, and :cfunc:`PyBuffer_Release` when the buffer view can be released.
+
 
 Buffer Protocol
 ===============
