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GH-103082: Filter LINE events in VM, to simplify tool implementation. (GH-104387)

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When monitoring LINE events, instrument all instructions that can have a predecessor on a different line.
Then check that the a new line has been hit in the instrumentation code.
This brings the behavior closer to that of 3.11, simplifying implementation and porting of tools.
This commit is contained in:
Mark Shannon 2023-05-12 12:21:20 +01:00 • committed by GitHub
parent 19ee53d52e
commit 45f5aa8fc7
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GPG key ID: 4AEE18F83AFDEB23
16 changed files with 255 additions and 161 deletions
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3
Objects/frameobject.c
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@ -831,7 +831,6 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno, void *Py_UNUSED(ignore
start_stack = pop_value(start_stack);
}
/* Finally set the new lasti and return OK. */
f->f_last_traced_line = new_lineno;
f->f_lineno = 0;
f->f_frame->prev_instr = _PyCode_CODE(f->f_frame->f_code) + best_addr;
return 0;
@ -854,7 +853,6 @@ frame_settrace(PyFrameObject *f, PyObject* v, void *closure)
}
if (v != f->f_trace) {
Py_XSETREF(f->f_trace, Py_XNewRef(v));
f->f_last_traced_line = -1;
}
return 0;
}
@ -1056,7 +1054,6 @@ _PyFrame_New_NoTrack(PyCodeObject *code)
f->f_trace_opcodes = 0;
f->f_fast_as_locals = 0;
f->f_lineno = 0;
f->f_last_traced_line = -1;
return f;
}