mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 17:08:35 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 13

gh-116322: Add Py_mod_gil module slot (#116882)

Browse source 
This PR adds the ability to enable the GIL if it was disabled at
interpreter startup, and modifies the multi-phase module initialization
path to enable the GIL when loading a module, unless that module's spec
includes a slot indicating it can run safely without the GIL.

PEP 703 called the constant for the slot `Py_mod_gil_not_used`; I went
with `Py_MOD_GIL_NOT_USED` for consistency with gh-104148.

A warning will be issued up to once per interpreter for the first
GIL-using module that is loaded. If `-v` is given, a shorter message
will be printed to stderr every time a GIL-using module is loaded
(including the first one that issues a warning).
This commit is contained in:
Brett Simmers 2024-05-03 08:30:55 -07:00 • committed by GitHub
parent 3e818afb9b
commit c2627d6eea
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
123 changed files with 376 additions and 62 deletions
Download patch file Download diff file Expand all files Collapse all files

5
PC/_testconsole.c
View file

@ -1,10 +1,10 @@
/* Testing module for multi-phase initialization of extension modules (PEP 489)
*/
// Need limited C API version 3.12 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
// Need limited C API version 3.13 for Py_mod_gil
#include "pyconfig.h" // Py_GIL_DISABLED
#ifndef Py_GIL_DISABLED
# define Py_LIMITED_API 0x030c0000
# define Py_LIMITED_API 0x030d0000
#endif
#include "Python.h"
@ -31,6 +31,7 @@ static int execfunc(PyObject *m)
PyModuleDef_Slot testconsole_slots[] = {
{Py_mod_exec, execfunc},
{Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
{Py_mod_gil, Py_MOD_GIL_NOT_USED},
{0, NULL},
};