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gh-110481: Implement biased reference counting (gh-110764)

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Sam Gross 2023-10-30 12:06:09 -04:00 • committed by GitHub
parent 05f2f0ac92
commit 6dfb8fe023
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GPG key ID: 4AEE18F83AFDEB23
29 changed files with 511 additions and 52 deletions
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3
Python/ceval.c
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@ -46,12 +46,13 @@
# error "ceval.c must be build with Py_BUILD_CORE define for best performance"
#endif
#if !defined(Py_DEBUG) && !defined(Py_TRACE_REFS)
#if !defined(Py_DEBUG) && !defined(Py_TRACE_REFS) && !defined(Py_NOGIL)
// GH-89279: The MSVC compiler does not inline these static inline functions
// in PGO build in _PyEval_EvalFrameDefault(), because this function is over
// the limit of PGO, and that limit cannot be configured.
// Define them as macros to make sure that they are always inlined by the
// preprocessor.
// TODO: implement Py_DECREF macro for Py_NOGIL
#undef Py_DECREF
#define Py_DECREF(arg) \

12
Python/instrumentation.c
View file

@ -19,17 +19,9 @@
/* Uncomment this to dump debugging output when assertions fail */
// #define INSTRUMENT_DEBUG 1
PyObject _PyInstrumentation_DISABLE =
{
.ob_refcnt = _Py_IMMORTAL_REFCNT,
.ob_type = &PyBaseObject_Type
};
PyObject _PyInstrumentation_DISABLE = _PyObject_HEAD_INIT(&PyBaseObject_Type);
PyObject _PyInstrumentation_MISSING =
{
.ob_refcnt = _Py_IMMORTAL_REFCNT,
.ob_type = &PyBaseObject_Type
};
PyObject _PyInstrumentation_MISSING = _PyObject_HEAD_INIT(&PyBaseObject_Type);
static const int8_t EVENT_FOR_OPCODE[256] = {
[RETURN_CONST] = PY_MONITORING_EVENT_PY_RETURN,

2
Python/specialize.c
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@ -2525,7 +2525,7 @@ static const PyBytesObject no_location = {
};
const struct _PyCode_DEF(8) _Py_InitCleanup = {
_PyVarObject_HEAD_INIT(&PyCode_Type, 3)
_PyVarObject_HEAD_INIT(&PyCode_Type, 3),
.co_consts = (PyObject *)&_Py_SINGLETON(tuple_empty),
.co_names = (PyObject *)&_Py_SINGLETON(tuple_empty),
.co_exceptiontable = (PyObject *)&_Py_SINGLETON(bytes_empty),