8000 gh-99741: Implement Multi-Phase Init for the _xxsubinterpreters Module by ericsnowcurrently · Pull Request #99742 · python/cpython · GitHub
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gh-99741: Implement Multi-Phase Init for the _xxsubinterpreters Module #99742

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Merged
merged 10 commits into from
Dec 5, 2022
Merged

gh-99741: Implement Multi-Phase Init for the _xxsubinterpreters Module #99742

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bd7ee33
Add _PyCrossInterpreterData_Init() and _PyCrossInterpreterData_Clear().
ericsnowcurrently Dec 2, 2022
0bfe7b5
Clear channels before interpreters.
ericsnowcurrently Dec 2, 2022
6932dc7
Add a test for importing the module in a subinterpreter.
ericsnowcurrently Dec 5, 2022
fe3fd40
Add module state.
ericsnowcurrently Nov 21, 2022
8c976d6
fix _str_shared()
ericsnowcurrently Dec 2, 2022
8a50e87
Move the exceptions to module state.
ericsnowcurrently Nov 23, 2022
89e3ecc
Drop the globals for the error types.
ericsnowcurrently Nov 22, 2022
2540946
Make ChannelIDType a heap type.
ericsnowcurrently Nov 23, 2022
98c240a
Switch to multi-phase init.
ericsnowcurrently Nov 21, 2022
9d388e7
Add a NEWS entry.
ericsnowcurrently Nov 24, 2022
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Add module state.
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@ericsnowcurrently
ericsnowcurrently committed Dec 5, 2022
commit fe3fd40654d40832ee8214595ecf4f567b8e4efc
56 changes: 55 additions & 1 deletion Modules/_xxsubinterpretersmodule.c
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8000
Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,33 @@ _release_xid_data(_PyCrossInterpreterData *data, int ignoreexc)
}


/* module state *************************************************************/

typedef struct {
int _not_used;
} module_state;

static inline module_state *
get_module_state(PyObject *mod)
{
module_state *state = PyModule_GetState(mod);
assert(state != NULL);
return state;
}

static int
traverse_module_state(module_state *state, visitproc visit, void *arg)
{
return 0;
}

static int
clear_module_state(module_state *state)
{
return 0;
}


/* data-sharing-specific code ***********************************************/

struct _sharednsitem {
Expand Down Expand Up @@ -2934,12 +2961,39 @@ module_exec(PyObject *mod)
return -1;
}

static int
module_traverse(PyObject *mod, visitproc visit, void *arg)
{
module_state *state = get_module_state(mod);
traverse_module_state(state, visit, arg);
return 0;
}

static int
module_clear(PyObject *mod)
{
module_state *state = get_module_state(mod);
clear_module_state(state);
return 0;
}

static void
module_free(void *mod)
{
(void)module_clear((PyObject *)mod);
(void)_PyCrossInterpreterData_UnregisterClass(&ChannelIDType);
_globals_fini();
}

static struct PyModuleDef moduledef = {
.m_base = PyModuleDef_HEAD_INIT,
.m_name = MODULE_NAME,
.m_doc = module_doc,
.m_size = -1,
.m_size = sizeof(module_state),
.m_methods = module_functions,
.m_traverse = module_traverse,
.m_clear = module_clear,
.m_free = (freefunc)module_free,
};


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0