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gh-98627: Add an Optional Check for Extension Module Subinterpreter Compatibility (gh-99040)

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Enforcing (optionally) the restriction set by PEP 489 makes sense. Furthermore, this sets the stage for a potential restriction related to a per-interpreter GIL.

This change includes the following:

* add tests for extension module subinterpreter compatibility
* add _PyInterpreterConfig.check_multi_interp_extensions
* add Py_RTFLAGS_MULTI_INTERP_EXTENSIONS
* add _PyImport_CheckSubinterpIncompatibleExtensionAllowed()
* fail iff the module does not implement multi-phase init and the current interpreter is configured to check

https://github.com/python/cpython/issues/98627
This commit is contained in:
Eric Snow 2023-02-15 18:16:00 -07:00 • committed by GitHub
parent 3dea4ba6c1
commit 89ac665891
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GPG key ID: 4AEE18F83AFDEB23
15 changed files with 557 additions and 19 deletions
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33
Python/clinic/import.c.h generated
View file

@ -442,6 +442,37 @@ exit:
return return_value;
}
PyDoc_STRVAR(_imp__override_multi_interp_extensions_check__doc__,
"_override_multi_interp_extensions_check($module, override, /)\n"
"--\n"
"\n"
"(internal-only) Override PyInterpreterConfig.check_multi_interp_extensions.\n"
"\n"
"(-1: \"never\", 1: \"always\", 0: no override)");
#define _IMP__OVERRIDE_MULTI_INTERP_EXTENSIONS_CHECK_METHODDEF \
{"_override_multi_interp_extensions_check", (PyCFunction)_imp__override_multi_interp_extensions_check, METH_O, _imp__override_multi_interp_extensions_check__doc__},
static PyObject *
_imp__override_multi_interp_extensions_check_impl(PyObject *module,
int override);
static PyObject *
_imp__override_multi_interp_extensions_check(PyObject *module, PyObject *arg)
{
PyObject *return_value = NULL;
int override;
override = _PyLong_AsInt(arg);
if (override == -1 && PyErr_Occurred()) {
goto exit;
}
return_value = _imp__override_multi_interp_extensions_check_impl(module, override);
exit:
return return_value;
}
#if defined(HAVE_DYNAMIC_LOADING)
PyDoc_STRVAR(_imp_create_dynamic__doc__,
@ -617,4 +648,4 @@ exit:
#ifndef _IMP_EXEC_DYNAMIC_METHODDEF
#define _IMP_EXEC_DYNAMIC_METHODDEF
#endif /* !defined(_IMP_EXEC_DYNAMIC_METHODDEF) */
/*[clinic end generated code: output=806352838c3f7008 input=a9049054013a1b77]*/
/*[clinic end generated code: output=b18d46e0036eff49 input=a9049054013a1b77]*/