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gh-107674: Improve performance of sys.settrace (GH-114986)

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Tian Gao 2024-02-28 07:21:42 -08:00 • committed by GitHub
parent 9578288a3e
commit 0a61e23700
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7 changed files with 64 additions and 53 deletions
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33
Python/bytecodes.c
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@ -143,22 +143,23 @@ dummy_func(
tier1 inst(RESUME, (--)) {
assert(frame == tstate->current_frame);
uintptr_t global_version =
_Py_atomic_load_uintptr_relaxed(&tstate->eval_breaker) &
~_PY_EVAL_EVENTS_MASK;
uintptr_t code_version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
assert((code_version & 255) == 0);
if (code_version != global_version) {
int err = _Py_Instrument(_PyFrame_GetCode(frame), tstate->interp);
ERROR_IF(err, error);
next_instr = this_instr;
}
else {
if ((oparg & RESUME_OPARG_LOCATION_MASK) < RESUME_AFTER_YIELD_FROM) {
CHECK_EVAL_BREAKER();
if (tstate->tracing == 0) {
uintptr_t global_version =
_Py_atomic_load_uintptr_relaxed(&tstate->eval_breaker) &
~_PY_EVAL_EVENTS_MASK;
uintptr_t code_version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
assert((code_version & 255) == 0);
if (code_version != global_version) {
int err = _Py_Instrument(_PyFrame_GetCode(frame), tstate->interp);
ERROR_IF(err, error);
next_instr = this_instr;
DISPATCH();
}
this_instr->op.code = RESUME_CHECK;
}
if ((oparg & RESUME_OPARG_LOCATION_MASK) < RESUME_AFTER_YIELD_FROM) {
CHECK_EVAL_BREAKER();
}
this_instr->op.code = RESUME_CHECK;
}
inst(RESUME_CHECK, (--)) {
@ -169,13 +170,13 @@ dummy_func(
uintptr_t eval_breaker = _Py_atomic_load_uintptr_relaxed(&tstate->eval_breaker);
uintptr_t version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
assert((version & _PY_EVAL_EVENTS_MASK) == 0);
DEOPT_IF(eval_breaker != version);
DEOPT_IF(eval_breaker != version && tstate->tracing == 0);
}
inst(INSTRUMENTED_RESUME, (--)) {
uintptr_t global_version = _Py_atomic_load_uintptr_relaxed(&tstate->eval_breaker) & ~_PY_EVAL_EVENTS_MASK;
uintptr_t code_version = _PyFrame_GetCode(frame)->_co_instrumentation_version;
if (code_version != global_version) {
if (code_version != global_version && tstate->tracing == 0) {
if (_Py_Instrument(_PyFrame_GetCode(frame), tstate->interp)) {
GOTO_ERROR(error);
}