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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).
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
#ifndef Py_INTERNAL_MODULEOBJECT_H
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#define Py_INTERNAL_MODULEOBJECT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef Py_BUILD_CORE
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# error "this header requires Py_BUILD_CORE define"
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#endif
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extern void _PyModule_Clear(PyObject *);
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extern void _PyModule_ClearDict(PyObject *);
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extern int _PyModuleSpec_IsInitializing(PyObject *);
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extern int _PyModule_IsExtension(PyObject *obj);
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typedef struct {
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PyObject_HEAD
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PyObject *md_dict;
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PyModuleDef *md_def;
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void *md_state;
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PyObject *md_weaklist;
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// for logging purposes after md_dict is cleared
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PyObject *md_name;
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#ifdef Py_GIL_DISABLED
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void *md_gil;
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#endif
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} PyModuleObject;
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static inline PyModuleDef* _PyModule_GetDef(PyObject *mod) {
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assert(PyModule_Check(mod));
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return ((PyModuleObject *)mod)->md_def;
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}
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static inline void* _PyModule_GetState(PyObject* mod) {
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assert(PyModule_Check(mod));
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return ((PyModuleObject *)mod)->md_state;
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}
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static inline PyObject* _PyModule_GetDict(PyObject *mod) {
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assert(PyModule_Check(mod));
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PyObject *dict = ((PyModuleObject *)mod) -> md_dict;
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// _PyModule_GetDict(mod) must not be used after calling module_clear(mod)
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assert(dict != NULL);
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return dict; // borrowed reference
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}
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PyObject* _Py_module_getattro_impl(PyModuleObject *m, PyObject *name, int suppress);
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PyObject* _Py_module_getattro(PyModuleObject *m, PyObject *name);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_INTERNAL_MODULEOBJECT_H */
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