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bpo-40521: Make the empty frozenset per interpreter (GH-21068)

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Each interpreter now has its own empty frozenset singleton.
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Victor Stinner 2020-06-23 14:07:52 +02:00 • committed by GitHub
parent b4e85cadfb
commit 261cfedf76
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5 changed files with 24 additions and 19 deletions
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2
Include/internal/pycore_interp.h
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@ -238,6 +238,8 @@ struct _is {
/* Using a cache is very effective since typically only a single slice is
created and then deleted again. */
PySliceObject *slice_cache;
// The empty frozenset is a singleton.
PyObject *empty_frozenset;
struct _Py_tuple_state tuple;
struct _Py_list_state list;

2
Include/internal/pycore_pylifecycle.h
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@ -62,7 +62,7 @@ extern void _PyFrame_Fini(PyThreadState *tstate);
extern void _PyDict_Fini(PyThreadState *tstate);
extern void _PyTuple_Fini(PyThreadState *tstate);
extern void _PyList_Fini(PyThreadState *tstate);
extern void _PySet_Fini(void);
extern void _PySet_Fini(PyThreadState *tstate);
extern void _PyBytes_Fini(void);
extern void _PyFloat_Fini(PyThreadState *tstate);
extern void _PySlice_Fini(PyThreadState *tstate);