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bpo-45522: Allow to disable freelists on build time (GH-29056)

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Freelists for object structs can now be disabled. A new ``configure``
option ``--without-freelists`` can be used to disable all freelists
except empty tuple singleton. Internal Py*_MAXFREELIST macros can now
be defined as 0 without causing compiler warnings and segfaults.

Signed-off-by: Christian Heimes <christian@python.org>
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Christian Heimes 2021-10-21 16:12:20 +03:00 • committed by GitHub
parent 5a14f71fe8
commit 9942f42a93
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15 changed files with 218 additions and 35 deletions
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3
Objects/tupleobject.c
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@ -66,7 +66,8 @@ tuple_alloc(Py_ssize_t size)
return NULL;
}
#if PyTuple_MAXSAVESIZE > 0
// Check for max save size > 1. Empty tuple singleton is special case.
#if PyTuple_MAXSAVESIZE > 1
struct _Py_tuple_state *state = get_tuple_state();
#ifdef Py_DEBUG
// tuple_alloc() must not be called after _PyTuple_Fini()