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| author | Victor Stinner <vstinner@redhat.com> | 2019-06-17 12:27:23 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-06-17 12:27:23 (GMT) |
| commit | 2ff58a24e8a1c7e290d025d69ebaea0bbead3b8c (patch) | |
| tree | 85d26a4891196105808df38b430c3332d591da13 /Doc/whatsnew | |
| parent | 8bf08ee45b7c2341f0d0175b91892843a37c23da (diff) | |
| download | cpython-2ff58a24e8a1c7e290d025d69ebaea0bbead3b8c.zip cpython-2ff58a24e8a1c7e290d025d69ebaea0bbead3b8c.tar.gz cpython-2ff58a24e8a1c7e290d025d69ebaea0bbead3b8c.tar.bz2 | |
bpo-37194: Add a new public PyObject_CallNoArgs() function (GH-13890)
Add a new public PyObject_CallNoArgs() function to the C API: call a
callable Python object without any arguments.
It is the most efficient way to call a callback without any argument.
On x86-64, for example, PyObject_CallFunctionObjArgs(func, NULL)
allocates 960 bytes on the stack per call, whereas
PyObject_CallNoArgs(func) only allocates 624 bytes per call.
It is excluded from stable ABI 3.8.
Replace private _PyObject_CallNoArg() with public
PyObject_CallNoArgs() in C extensions: _asyncio, _datetime,
_elementtree, _pickle, _tkinter and readline.
Diffstat (limited to 'Doc/whatsnew')
| -rw-r--r-- | Doc/whatsnew/3.9.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst index ed55838..62b013f 100644 --- a/Doc/whatsnew/3.9.rst +++ b/Doc/whatsnew/3.9.rst @@ -102,6 +102,8 @@ Optimizations Build and C API Changes ======================= +* Add a new public :c:func:`PyObject_CallNoArgs` function to the C API: + call a callable Python object without any arguments. Deprecated |