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bpo-40521: Make empty Unicode string per interpreter (GH-21096)

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Each interpreter now has its own empty Unicode string singleton.
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Victor Stinner 2020-06-24 00:10:40 +02:00 • committed by GitHub
parent d051801052
commit f363d0a6e9
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12 changed files with 130 additions and 90 deletions
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2
Include/internal/pycore_interp.h
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@ -71,6 +71,8 @@ struct _Py_bytes_state {
};
struct _Py_unicode_state {
// The empty Unicode object is a singleton to improve performance.
PyObject *empty;
struct _Py_unicode_fs_codec fs_codec;
};

2
Include/internal/pycore_pylifecycle.h
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@ -31,7 +31,7 @@ PyAPI_FUNC(int) _Py_IsLocaleCoercionTarget(const char *ctype_loc);
/* Various one-time initializers */
extern PyStatus _PyUnicode_Init(void);
extern PyStatus _PyUnicode_Init(PyThreadState *tstate);
extern int _PyStructSequence_Init(void);
extern int _PyLong_Init(PyThreadState *tstate);
extern PyStatus _PyFaulthandler_Init(int enable);