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GH-111843: Tier 2 exponential backoff (GH-111850)

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Mark Shannon 2023-11-09 13:49:51 +00:00 • committed by GitHub
parent 25c4956488
commit 34a03e951b
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5 changed files with 47 additions and 14 deletions
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9
Python/optimizer.c
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@ -107,6 +107,7 @@ error_optimize(
_PyExecutorObject **exec,
int Py_UNUSED(stack_entries))
{
assert(0);
PyErr_Format(PyExc_SystemError, "Should never call error_optimize");
return -1;
}
@ -122,8 +123,8 @@ PyTypeObject _PyDefaultOptimizer_Type = {
_PyOptimizerObject _PyOptimizer_Default = {
PyObject_HEAD_INIT(&_PyDefaultOptimizer_Type)
.optimize = error_optimize,
.resume_threshold = UINT16_MAX,
.backedge_threshold = UINT16_MAX,
.resume_threshold = INT16_MAX,
.backedge_threshold = INT16_MAX,
};
_PyOptimizerObject *
@ -309,7 +310,7 @@ PyUnstable_Optimizer_NewCounter(void)
return NULL;
}
opt->base.optimize = counter_optimize;
opt->base.resume_threshold = UINT16_MAX;
opt->base.resume_threshold = INT16_MAX;
opt->base.backedge_threshold = 0;
opt->count = 0;
return (PyObject *)opt;
@ -915,7 +916,7 @@ PyUnstable_Optimizer_NewUOpOptimizer(void)
return NULL;
}
opt->optimize = uop_optimize;
opt->resume_threshold = UINT16_MAX;
opt->resume_threshold = INT16_MAX;
// Need at least 3 iterations to settle specializations.
// A few lower bits of the counter are reserved for other flags.
opt->backedge_threshold = 16 << OPTIMIZER_BITS_IN_COUNTER;