bpo-44590: Lazily allocate frame objects (GH-27077)

* Convert "specials" array to InterpreterFrame struct, adding f_lasti, f_state and other non-debug FrameObject fields to it.

* Refactor, calls pushing the call to the interpreter upward toward _PyEval_Vector.

* Compute f_back when on thread stack, only filling in value when frame object outlives stack invocation.

* Move ownership of InterpreterFrame in generator from frame object to generator object.

* Do not create frame objects for Python calls.

* Do not create frame objects for generators.
This commit is contained in:
Mark Shannon 2021-07-26 11:22:16 +01:00 committed by GitHub
parent 0363a4014d
commit ae0a2b7562
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27 changed files with 1037 additions and 619 deletions

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@ -4,6 +4,7 @@
#include "Python.h"
#include "frameobject.h"
#include "pycore_frame.h"
#include "interpreteridobject.h"
@ -1834,13 +1835,12 @@ _is_running(PyInterpreterState *interp)
}
assert(!PyErr_Occurred());
PyFrameObject *frame = PyThreadState_GetFrame(tstate);
InterpreterFrame *frame = tstate->frame;
if (frame == NULL) {
return 0;
}
int executing = _PyFrame_IsExecuting(frame);
Py_DECREF(frame);
return executing;
}