mirror of
https://github.com/python/cpython.git
synced 2025-11-04 07:31:38 +00:00
c2627d6eea
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).
68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/*
|
|
* C extensions module to test importing multiple modules from one compiled
|
|
* file (issue16421). This file defines 3 modules (_testimportmodule,
|
|
* foo, bar), only the first one is called the same as the compiled file.
|
|
*/
|
|
|
|
#include "pyconfig.h" // Py_GIL_DISABLED
|
|
#ifndef Py_GIL_DISABLED
|
|
# define Py_LIMITED_API 0x030d0000
|
|
#endif
|
|
|
|
#include <Python.h>
|
|
|
|
static PyModuleDef_Slot shared_slots[] = {
|
|
{Py_mod_multiple_interpreters, Py_MOD_MULTIPLE_INTERPRETERS_NOT_SUPPORTED},
|
|
{Py_mod_gil, Py_MOD_GIL_NOT_USED},
|
|
{0, NULL},
|
|
};
|
|
|
|
static struct PyModuleDef _testimportmultiple = {
|
|
PyModuleDef_HEAD_INIT,
|
|
"_testimportmultiple",
|
|
"_testimportmultiple doc",
|
|
0,
|
|
NULL,
|
|
shared_slots,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
PyMODINIT_FUNC PyInit__testimportmultiple(void)
|
|
{
|
|
return PyModuleDef_Init(&_testimportmultiple);
|
|
}
|
|
|
|
static struct PyModuleDef _foomodule = {
|
|
PyModuleDef_HEAD_INIT,
|
|
"_testimportmultiple_foo",
|
|
"_testimportmultiple_foo doc",
|
|
0,
|
|
NULL,
|
|
shared_slots,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
PyMODINIT_FUNC PyInit__testimportmultiple_foo(void)
|
|
{
|
|
return PyModuleDef_Init(&_foomodule);
|
|
}
|
|
|
|
static struct PyModuleDef _barmodule = {
|
|
PyModuleDef_HEAD_INIT,
|
|
"_testimportmultiple_bar",
|
|
"_testimportmultiple_bar doc",
|
|
0,
|
|
NULL,
|
|
shared_slots,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
PyMODINIT_FUNC PyInit__testimportmultiple_bar(void){
|
|
return PyModuleDef_Init(&_barmodule);
|
|
}
|