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gh-118527: Intern code consts in free-threaded build (#118667)

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We already intern and immortalize most string constants. In the
free-threaded build, other constants can be a source of reference count
contention because they are shared by all threads running the same code
objects.
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Sam Gross 2024-05-06 20:12:39 -04:00 • committed by GitHub
parent 8d8275b0cf
commit 723d4d2fe8
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14 changed files with 375 additions and 18 deletions
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12
Modules/_testinternalcapi.c
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@ -1985,6 +1985,17 @@ set_immortalize_deferred(PyObject *self, PyObject *value)
#endif
}
static PyObject *
get_immortalize_deferred(PyObject *self, PyObject *Py_UNUSED(ignored))
{
#ifdef Py_GIL_DISABLED
PyInterpreterState *interp = PyInterpreterState_Get();
return PyBool_FromLong(interp->gc.immortalize.enable_on_thread_created);
#else
Py_RETURN_FALSE;
#endif
}
static PyObject *
has_inline_values(PyObject *self, PyObject *obj)
{
@ -2081,6 +2092,7 @@ static PyMethodDef module_functions[] = {
{"py_thread_id", get_py_thread_id, METH_NOARGS},
#endif
{"set_immortalize_deferred", set_immortalize_deferred, METH_VARARGS},
{"get_immortalize_deferred", get_immortalize_deferred, METH_NOARGS},
#ifdef _Py_TIER2
{"uop_symbols_test", _Py_uop_symbols_test, METH_NOARGS},
#endif