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gh-124218: Use per-thread refcounts for code objects (#125216)

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Use per-thread refcounting for the reference from function objects to
their corresponding code object. This can be a source of contention when
frequently creating nested functions. Deferred refcounting alone isn't a
great fit here because these references are on the heap and may be
modified by other libraries.
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Sam Gross 2024-10-15 15:06:41 -04:00 • committed by GitHub
parent 206de4155b
commit 3ea488aac4
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11 changed files with 126 additions and 83 deletions
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Python/pystate.c
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@ -20,7 +20,7 @@
#include "pycore_runtime_init.h" // _PyRuntimeState_INIT
#include "pycore_sysmodule.h" // _PySys_Audit()
#include "pycore_obmalloc.h" // _PyMem_obmalloc_state_on_heap()
#include "pycore_uniqueid.h" // _PyType_FinalizeThreadLocalRefcounts()
#include "pycore_uniqueid.h" // _PyObject_FinalizePerThreadRefcounts()
/* --------------------------------------------------------------------------
CAUTION