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gh-111968: Explicit handling for finalized freelist #113929

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merged 6 commits into from
Jan 12, 2024
Merged

gh-111968: Explicit handling for finalized freelist #113929

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6b464c4
gh-111968: Explicit handling for finzliaed freelist of list
corona10 Jan 10, 2024
4c9bbe6
Update
corona10 Jan 10, 2024
52f3c54
Merge remote-tracking branch 'upstream/main' into gh-111968-list-fini
corona10 Jan 11, 2024
9c3bae8
Address code review
corona10 Jan 11, 2024
e34e042
revert
corona10 Jan 12, 2024
bbbd1b3
Address code review
corona10 Jan 12, 2024
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6 changes: 1 addition & 5 deletions Objects/floatobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -131,11 +131,7 @@ PyFloat_FromDouble(double fval)
#ifdef WITH_FREELISTS
struct _Py_float_state *state = get_float_state();
op = state->free_list;
if (op != NULL) {
#ifdef Py_DEBUG
// PyFloat_FromDouble() must not be called after _PyFloat_Fini()
assert(state->numfree != -1);
#endif
if (op != NULL && state->numfree > 0) {
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state->free_list = (PyFloatObject *) Py_TYPE(op);
state->numfree--;
OBJECT_STAT_INC(from_freelist);
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22 changes: 7 additions & 15 deletions Objects/listobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ class list "PyListObject *" "&PyList_Type"

_Py_DECLARE_STR(list_err, "list index out of range");

#if PyList_MAXFREELIST > 0
#ifdef WITH_FREELISTS
static struct _Py_list_state *
get_list_state(void)
{
Expand Down Expand Up @@ -123,7 +123,7 @@ list_preallocate_exact(PyListObject *self, Py_ssize_t size)
void
_PyList_ClearFreeList(_PyFreeListState *freelist_state, int is_finalization)
{
#if PyList_MAXFREELIST > 0
#ifdef WITH_FREELISTS
struct _Py_list_state *state = &freelist_state->list_state;
while (state->numfree > 0) {
PyListObject *op = state->free_list[--state->numfree];
Expand All @@ -146,7 +146,7 @@ _PyList_Fini(_PyFreeListState *state)
void
_PyList_DebugMallocStats(FILE *out)
{
#if PyList_MAXFREELIST > 0
#ifdef WITH_FREELISTS
struct _Py_list_state *state = get_list_state();
_PyDebugAllocatorStats(out,
"free PyListObject",
Expand All @@ -164,13 +164,9 @@ PyList_New(Py_ssize_t size)
return NULL;
}

#if PyList_MAXFREELIST > 0
#ifdef WITH_FREELISTS
struct _Py_list_state *state = get_list_state();
#ifdef Py_DEBUG
// PyList_New() must not be called after _PyList_Fini()
assert(state->numfree != -1);
#endif
if (PyList_MAXFREELIST && state->numfree) {
if (PyList_MAXFREELIST && state->numfree > 0) {
state->numfree--;
op = state->free_list[state->numfree];
OBJECT_STAT_INC(from_freelist);
Expand Down Expand Up @@ -360,13 +356,9 @@ list_dealloc(PyObject *self)
}
PyMem_Free(op->ob_item);
}
#if PyList_MAXFREELIST > 0
#ifdef WITH_FREELISTS
struct _Py_list_state *state = get_list_state();
#ifdef Py_DEBUG
// list_dealloc() must not be called after _PyList_Fini()
assert(state->numfree != -1);
#endif
if (state->numfree < PyList_MAXFREELIST && PyList_CheckExact(op)) {
if (state->numfree < PyList_MAXFREELIST && state->numfree >= 0 && PyList_CheckExact(op)) {
state->free_list[state->numfree++] = op;
OBJECT_STAT_INC(to_freelist);
}
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