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GH-108614: Add RESUME_CHECK instruction (GH-108630)

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Mark Shannon 2023-09-07 14:39:03 +01:00 • committed by GitHub
parent d485551c9d
commit 0858328ca2
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16 changed files with 519 additions and 482 deletions
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29
Python/bytecodes.c
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@ -132,24 +132,37 @@ dummy_func(
inst(NOP, (--)) {
}
family(RESUME, 0) = {
RESUME_CHECK,
};
inst(RESUME, (--)) {
TIER_ONE_ONLY
assert(frame == tstate->current_frame);
/* Possibly combine this with eval breaker */
if (_PyFrame_GetCode(frame)->_co_instrumentation_version != tstate->interp->monitoring_version) {
int err = _Py_Instrument(_PyFrame_GetCode(frame), tstate->interp);
ERROR_IF(err, error);
#if TIER_ONE
next_instr--;
#endif
#if TIER_TWO
goto deoptimize;
#endif
}
else if (oparg < 2) {
CHECK_EVAL_BREAKER();
else {
if (oparg < 2) {
CHECK_EVAL_BREAKER();
}
next_instr[-1].op.code = RESUME_CHECK;
}
}
inst(RESUME_CHECK, (--)) {
#if defined(__EMSCRIPTEN__)
DEOPT_IF(emscripten_signal_clock == 0, RESUME);
emscripten_signal_clock -= Py_EMSCRIPTEN_SIGNAL_HANDLING;
#endif
/* Possibly combine these two checks */
DEOPT_IF(_PyFrame_GetCode(frame)->_co_instrumentation_version
!= tstate->interp->monitoring_version, RESUME);
DEOPT_IF(_Py_atomic_load_relaxed_int32(&tstate->interp->ceval.eval_breaker), RESUME);
}
inst(INSTRUMENTED_RESUME, (--)) {
/* Possible performance enhancement:
* We need to check the eval breaker anyway, can we