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gh-107674: Improve performance of sys.settrace (GH-117133)

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* Check tracing in RESUME_CHECK

* Only change to RESUME_CHECK if not tracing
This commit is contained in:
Tian Gao 2024-05-03 11:49:24 -07:00 • committed by GitHub
parent 998c3856c1
commit 9c14ed0618
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GPG key ID: B5690EEEBB952194
7 changed files with 63 additions and 52 deletions
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28
Python/ceval.c
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@ -808,17 +808,23 @@ resume_frame:
{
_Py_CODEUNIT *prev = frame->instr_ptr;
_Py_CODEUNIT *here = frame->instr_ptr = next_instr;
_PyFrame_SetStackPointer(frame, stack_pointer);
int original_opcode = _Py_call_instrumentation_line(
tstate, frame, here, prev);
stack_pointer = _PyFrame_GetStackPointer(frame);
if (original_opcode < 0) {
next_instr = here+1;
goto error;
}
next_instr = frame->instr_ptr;
if (next_instr != here) {
DISPATCH();
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 {
_PyFrame_SetStackPointer(frame, stack_pointer);
original_opcode = _Py_call_instrumentation_line(
tstate, frame, here, prev);
stack_pointer = _PyFrame_GetStackPointer(frame);
if (original_opcode < 0) {
next_instr = here+1;
goto error;
}
next_instr = frame->instr_ptr;
if (next_instr != here) {
DISPATCH();
}
}
if (_PyOpcode_Caches[original_opcode]) {
_PyBinaryOpCache *cache = (_PyBinaryOpCache *)(next_instr+1);