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bpo-45753: Make recursion checks more efficient. (GH-29524)

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* Uses recursion remaining, instead of recursion depth to speed up check against recursion limit.
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Mark Shannon 2021-11-16 11:01:57 +00:00 • committed by GitHub
parent 9bf2cbc4c4
commit b931077375
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10 changed files with 50 additions and 43 deletions
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Python/pystate.c
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@ -636,9 +636,9 @@ new_threadstate(PyInterpreterState *interp, int init)
tstate->interp = interp;
tstate->recursion_depth = 0;
tstate->recursion_limit = interp->ceval.recursion_limit;
tstate->recursion_remaining = interp->ceval.recursion_limit;
tstate->recursion_headroom = 0;
tstate->stackcheck_counter = 0;
tstate->tracing = 0;
tstate->root_cframe.use_tracing = 0;
tstate->root_cframe.current_frame = NULL;