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| author | Eric Snow <ericsnowcurrently@gmail.com> | 2022-02-08 20:39:07 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-02-08 20:39:07 (GMT) |
| commit | 81c72044a181dbbfbf689d7a977d0d99090f26a8 (patch) | |
| tree | 14329746bd6f179cf2ae7c9818e1ae881eb46360 /.github | |
| parent | c018d3037b5b62e6d48d5985d1a37b91762fbffb (diff) | |
| download | cpython-81c72044a181dbbfbf689d7a977d0d99090f26a8.zip cpython-81c72044a181dbbfbf689d7a977d0d99090f26a8.tar.gz cpython-81c72044a181dbbfbf689d7a977d0d99090f26a8.tar.bz2 | |
bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928)
We're no longer using _Py_IDENTIFIER() (or _Py_static_string()) in any core CPython code. It is still used in a number of non-builtin stdlib modules.
The replacement is: PyUnicodeObject (not pointer) fields under _PyRuntimeState, statically initialized as part of _PyRuntime. A new _Py_GET_GLOBAL_IDENTIFIER() macro facilitates lookup of the fields (along with _Py_GET_GLOBAL_STRING() for non-identifier strings).
https://bugs.python.org/issue46541#msg411799 explains the rationale for this change.
The core of the change is in:
* (new) Include/internal/pycore_global_strings.h - the declarations for the global strings, along with the macros
* Include/internal/pycore_runtime_init.h - added the static initializers for the global strings
* Include/internal/pycore_global_objects.h - where the struct in pycore_global_strings.h is hooked into _PyRuntimeState
* Tools/scripts/generate_global_objects.py - added generation of the global string declarations and static initializers
I've also added a --check flag to generate_global_objects.py (along with make check-global-objects) to check for unused global strings. That check is added to the PR CI config.
The remainder of this change updates the core code to use _Py_GET_GLOBAL_IDENTIFIER() instead of _Py_IDENTIFIER() and the related _Py*Id functions (likewise for _Py_GET_GLOBAL_STRING() instead of _Py_static_string()). This includes adding a few functions where there wasn't already an alternative to _Py*Id(), replacing the _Py_Identifier * parameter with PyObject *.
The following are not changed (yet):
* stop using _Py_IDENTIFIER() in the stdlib modules
* (maybe) get rid of _Py_IDENTIFIER(), etc. entirely -- this may not be doable as at least one package on PyPI using this (private) API
* (maybe) intern the strings during runtime init
https://bugs.python.org/issue46541
Diffstat (limited to '.github')
| -rw-r--r-- | .github/workflows/build.yml | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml index 5d36dff..376359c 100644 --- a/.github/workflows/build.yml +++ b/.github/workflows/build.yml @@ -100,6 +100,8 @@ jobs: run: make smelly - name: Check limited ABI symbols run: make check-limited-abi + - name: Check global objects + run: make check-global-objects build_win32: name: 'Windows (x86)' |