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

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* 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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6
Python/_warnings.c
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@ -854,10 +854,8 @@ setup_context(Py_ssize_t stack_level, PyObject **filename, int *lineno,
*lineno = 1;
}
else {
globals = _PyFrame_GetGlobals(f);
PyCodeObject *code = PyFrame_GetCode(f);
*filename = code->co_filename;
Py_DECREF(code);
globals = f->f_frame->f_globals;
*filename = f->f_frame->f_code->co_filename;
Py_INCREF(*filename);
*lineno = PyFrame_GetLineNumber(f);
Py_DECREF(f);