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GH-127705: Use _PyStackRefs in the default build. (GH-127875)

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Mark Shannon 2025-03-10 14:06:56 +00:00 • committed by GitHub
parent 7cc99a54b7
commit 2bef8ea8ea
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21 changed files with 688 additions and 254 deletions
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25
Python/frame.c
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@ -50,24 +50,23 @@ take_ownership(PyFrameObject *f, _PyInterpreterFrame *frame)
{
assert(frame->owner < FRAME_OWNED_BY_INTERPRETER);
assert(frame->owner != FRAME_OWNED_BY_FRAME_OBJECT);
Py_ssize_t size = ((char*)frame->stackpointer) - (char *)frame;
memcpy((_PyInterpreterFrame *)f->_f_frame_data, frame, size);
frame = (_PyInterpreterFrame *)f->_f_frame_data;
frame->stackpointer = (_PyStackRef *)(((char *)frame) + size);
frame->f_executable = PyStackRef_DUP(frame->f_executable);
f->f_frame = frame;
frame->owner = FRAME_OWNED_BY_FRAME_OBJECT;
if (_PyFrame_IsIncomplete(frame)) {
_PyInterpreterFrame *new_frame = (_PyInterpreterFrame *)f->_f_frame_data;
_PyFrame_Copy(frame, new_frame);
// _PyFrame_Copy takes the reference to the executable,
// so we need to restore it.
frame->f_executable = PyStackRef_DUP(new_frame->f_executable);
f->f_frame = new_frame;
new_frame->owner = FRAME_OWNED_BY_FRAME_OBJECT;
if (_PyFrame_IsIncomplete(new_frame)) {
// This may be a newly-created generator or coroutine frame. Since it's
// dead anyways, just pretend that the first RESUME ran:
PyCodeObject *code = _PyFrame_GetCode(frame);
frame->instr_ptr =
_PyFrame_GetBytecode(frame) + code->_co_firsttraceable + 1;
PyCodeObject *code = _PyFrame_GetCode(new_frame);
new_frame->instr_ptr =
_PyFrame_GetBytecode(new_frame) + code->_co_firsttraceable + 1;
}
assert(!_PyFrame_IsIncomplete(frame));
assert(!_PyFrame_IsIncomplete(new_frame));
assert(f->f_back == NULL);
_PyInterpreterFrame *prev = _PyFrame_GetFirstComplete(frame->previous);
frame->previous = NULL;
if (prev) {
assert(prev->owner < FRAME_OWNED_BY_INTERPRETER);
/* Link PyFrameObjects.f_back and remove link through _PyInterpreterFrame.previous */