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gh-124218: Refactor per-thread reference counting (#124844)

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Currently, we only use per-thread reference counting for heap type objects and
the naming reflects that. We will extend it to a few additional types in an
upcoming change to avoid scaling bottlenecks when creating nested functions.

Rename some of the files and functions in preparation for this change.
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Sam Gross 2024-10-01 13:05:42 -04:00 • committed by GitHub
parent 5aa91c56bf
commit b482538523
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15 changed files with 168 additions and 167 deletions
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6
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_typeid.h" // _PyType_FinalizeThreadLocalRefcounts()
#include "pycore_uniqueid.h" // _PyType_FinalizeThreadLocalRefcounts()
/* --------------------------------------------------------------------------
CAUTION
@ -1745,7 +1745,7 @@ PyThreadState_Clear(PyThreadState *tstate)
// Merge our thread-local refcounts into the type's own refcount and
// free our local refcount array.
_PyType_FinalizeThreadLocalRefcounts((_PyThreadStateImpl *)tstate);
_PyObject_FinalizePerThreadRefcounts((_PyThreadStateImpl *)tstate);
// Remove ourself from the biased reference counting table of threads.
_Py_brc_remove_thread(tstate);
@ -1805,7 +1805,7 @@ tstate_delete_common(PyThreadState *tstate, int release_gil)
_PyThreadStateImpl *tstate_impl = (_PyThreadStateImpl *)tstate;
tstate->interp->object_state.reftotal += tstate_impl->reftotal;
tstate_impl->reftotal = 0;
assert(tstate_impl->types.refcounts == NULL);
assert(tstate_impl->refcounts.values == NULL);
#endif
HEAD_UNLOCK(runtime);