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bpo-40521: Make list free list per-interpreter (GH-20642)

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Each interpreter now has its own list free list:

* Move list numfree and free_list into PyInterpreterState.
* Add _Py_list_state structure.
* Add tstate parameter to _PyList_ClearFreeList()
  and _PyList_Fini().
* Remove "#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS".
* _PyGC_Fini() clears gcstate->garbage list which can be stored in
  the list free list. Call _PyGC_Fini() before _PyList_Fini() to
  prevent leaking this list.
This commit is contained in:
Victor Stinner 2020-06-05 02:05:41 +02:00 • committed by GitHub
parent 052d3fc090
commit 88ec919010
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7 changed files with 51 additions and 42 deletions
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6
Python/pylifecycle.c
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@ -1251,8 +1251,8 @@ finalize_interp_types(PyThreadState *tstate, int is_main_interp)
{
_PyFrame_Fini(tstate);
_PyTuple_Fini(tstate);
_PyList_Fini(tstate);
if (is_main_interp) {
_PyList_Fini();
_PySet_Fini();
_PyBytes_Fini();
}
@ -1296,6 +1296,8 @@ finalize_interp_clear(PyThreadState *tstate)
_PyGC_CollectNoFail();
}
_PyGC_Fini(tstate);
finalize_interp_types(tstate, is_main_interp);
if (is_main_interp) {
@ -1309,8 +1311,6 @@ finalize_interp_clear(PyThreadState *tstate)
_PyExc_Fini();
}
_PyGC_Fini(tstate);
}