8000 GH-133231: Changes to executor management to support proposed `sys._jit` module by markshannon · Pull Request #133287 · python/cpython · GitHub
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GH-133231: Changes to executor management to support proposed sys._jit module #133287

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Merged
merged 8 commits into from
May 4, 2025
Merged

GH-133231: Changes to executor management to support proposed sys._jit module #133287

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3a2ccda
Track the current executor on the thread-state, not the previous one.…
markshannon May 2, 2025
46ef280
Handle tail-calling interpreter
markshannon May 2, 2025
01ecf18
Merge branch 'main' into current-executor
markshannon May 2, 2025
89e4668
Merge branch 'main' into current-executor
markshannon May 2, 2025
2f42cb0
Don't use entry.frame in tailcalling interpreter
markshannon May 3, 2025
f938d68
Address review comments
markshannon May 3, 2025
a30e444
Fix compiler warning
markshannon May 3, 2025
0b9dcb7
Remove redundant code
markshannon May 4, 2025
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Handle tail-calling interpreter
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@markshannon
markshannon committed May 2, 2025
commit 46ef280f8b56011e36debc872c9c0458caa60f77
2 changes: 2 additions & 0 deletions Python/bytecodes.c
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Expand Up @@ -1169,12 +1169,14 @@ dummy_func(
tstate->current_frame = frame->previous;
assert(!_PyErr_Occurred(tstate));
PyObject *result = PyStackRef_AsPyObjectSteal(retval);
#if !Py_TAIL_CALL_INTERP && defined(_Py_TIER2)
_PyStackRef executor = entry.frame.localsplus[0];
assert(tstate->current_executor == NULL);
if (!PyStackRef_IsNull(executor)) {
tstate->current_executor = PyStackRef_AsPyObjectBorrow(executor);
PyStackRef_CLOSE(executor);
}
#endif
LLTRACE_RESUME_FRAME();
return result;
}
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20 changes: 14 additions & 6 deletions Python/ceval.c
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Expand Up @@ -1050,14 +1050,13 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
entry.frame.previous = tstate->current_frame;
frame->previous = &entry.frame;
tstate->current_frame = frame;

entry.frame.localsplus[0] = PyStackRef_NULL;
#ifdef _Py_TIER2
if (tstate->current_executor != NULL) {
entry.frame.localsplus[0] = PyStackRef_FromPyObjectNew(tstate->current_executor);
tstate->current_executor = NULL;
}
else {
entry.frame.localsplus[0] = PyStackRef_NULL;
}
#endif

/* support for generator.throw() */
if (throwflag) {
Expand All @@ -1084,10 +1083,19 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
stack_pointer = _PyFrame_GetStackPointer(frame);
#if Py_TAIL_CALL_INTERP
# if Py_STATS
return _TAIL_CALL_error(frame, stack_pointer, tstate, next_instr, 0, lastopcode);
PyObject *res = _TAIL_CALL_error(frame, stack_pointer, tstate, next_instr, 0, lastopcode);
# else
return _TAIL_CALL_error(frame, stack_pointer, tstate, next_instr, 0);
PyObject *res = _TAIL_CALL_error(frame, stack_pointer, tstate, next_instr, 0);
# endif
# ifdef _Py_TIER2
_PyStackRef executor = entry.frame.localsplus[0];
assert(tstate->current_executor == NULL);
if (!PyStackRef_IsNull(executor)) {
tstate->current_executor = PyStackRef_AsPyObjectBorrow(executor);
PyStackRef_CLOSE(executor);
}
# endif
return res;
#else
goto error;
#endif
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2 changes: 2 additions & 0 deletions Python/generated_cases.c.h
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2 changes: 2 additions & 0 deletions Python/optimizer.c
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Expand Up @@ -267,6 +267,8 @@ uop_dealloc(PyObject *op) {
_PyObject_GC_UNTRACK(self);
assert(self->vm_data.code == NULL);
unlink_executor(self);
// Once unlinked it becomes impossible to invalidate an executor, so do it here.
self->vm_data.valid = 0;
add_to_pending_deletion_list(self);
}

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