mirror of
https://github.com/python/cpython.git
synced 2024-11-24 17:47:13 +01:00
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).
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
// _sysconfig provides data for the Python sysconfig module
|
|
|
|
#ifndef Py_BUILD_CORE_BUILTIN
|
|
# define Py_BUILD_CORE_MODULE 1
|
|
#endif
|
|
|
|
#include "Python.h"
|
|
|
|
#include "pycore_importdl.h" // _PyImport_DynLoadFiletab
|
|
#include "pycore_long.h" // _PyLong_GetZero, _PyLong_GetOne
|
|
|
|
|
|
/*[clinic input]
|
|
module _sysconfig
|
|
[clinic start generated code]*/
|
|
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=0a7c02d3e212ac97]*/
|
|
|
|
#include "clinic/_sysconfig.c.h"
|
|
|
|
#ifdef MS_WINDOWS
|
|
static int
|
|
add_string_value(PyObject *dict, const char *key, const char *str_value)
|
|
{
|
|
PyObject *value = PyUnicode_FromString(str_value);
|
|
if (value == NULL) {
|
|
return -1;
|
|
}
|
|
int err = PyDict_SetItemString(dict, key, value);
|
|
Py_DECREF(value);
|
|
return err;
|
|
}
|
|
#endif
|
|
|
|
/*[clinic input]
|
|
_sysconfig.config_vars
|
|
|
|
Returns a dictionary containing build variables intended to be exposed by sysconfig.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
_sysconfig_config_vars_impl(PyObject *module)
|
|
/*[clinic end generated code: output=9c41cdee63ea9487 input=391ff42f3af57d01]*/
|
|
{
|
|
PyObject *config = PyDict_New();
|
|
if (config == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef MS_WINDOWS
|
|
if (add_string_value(config, "EXT_SUFFIX", PYD_TAGGED_SUFFIX) < 0) {
|
|
Py_DECREF(config);
|
|
return NULL;
|
|
}
|
|
if (add_string_value(config, "SOABI", PYD_SOABI) < 0) {
|
|
Py_DECREF(config);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#ifdef Py_GIL_DISABLED
|
|
PyObject *py_gil_disabled = _PyLong_GetOne();
|
|
#else
|
|
PyObject *py_gil_disabled = _PyLong_GetZero();
|
|
#endif
|
|
if (PyDict_SetItemString(config, "Py_GIL_DISABLED", py_gil_disabled) < 0) {
|
|
Py_DECREF(config);
|
|
return NULL;
|
|
}
|
|
|
|
return config;
|
|
}
|
|
|
|
PyDoc_STRVAR(sysconfig__doc__,
|
|
"A helper for the sysconfig module.");
|
|
|
|
static struct PyMethodDef sysconfig_methods[] = {
|
|
_SYSCONFIG_CONFIG_VARS_METHODDEF
|
|
{NULL, NULL}
|
|
};
|
|
|
|
static PyModuleDef_Slot sysconfig_slots[] = {
|
|
{Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
|
|
{Py_mod_gil, Py_MOD_GIL_NOT_USED},
|
|
{0, NULL}
|
|
};
|
|
|
|
static PyModuleDef sysconfig_module = {
|
|
.m_base = PyModuleDef_HEAD_INIT,
|
|
.m_name = "_sysconfig",
|
|
.m_doc = sysconfig__doc__,
|
|
.m_methods = sysconfig_methods,
|
|
.m_slots = sysconfig_slots,
|
|
};
|
|
|
|
PyMODINIT_FUNC
|
|
PyInit__sysconfig(void)
|
|
{
|
|
return PyModuleDef_Init(&sysconfig_module);
|
|
}
|