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[3.13] GH-127953: Make line number lookup O(1) regardless of the size of the code object (#129127)

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GH-127953: Make line number lookup O(1) regardless of the size of the code object (GH-128350)
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Mark Shannon 2025-04-07 19:15:02 +01:00 • committed by GitHub
parent 1fcf409ace
commit 3f3863281b
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5 changed files with 208 additions and 156 deletions
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Python/ceval.c
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@ -804,8 +804,10 @@ resume_frame:
int original_opcode = 0;
if (tstate->tracing) {
PyCodeObject *code = _PyFrame_GetCode(frame);
original_opcode = code->_co_monitoring->lines[(int)(here - _PyCode_CODE(code))].original_opcode;
} else {
int index = (int)(here - _PyCode_CODE(code));
original_opcode = code->_co_monitoring->lines->data[index*code->_co_monitoring->lines->bytes_per_entry];
}
else {
_PyFrame_SetStackPointer(frame, stack_pointer);
original_opcode = _Py_call_instrumentation_line(
tstate, frame, here, prev);