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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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16 changed files with 255 additions and 161 deletions
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1
Include/internal/pycore_frame.h
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@ -19,7 +19,6 @@ struct _frame {
struct _PyInterpreterFrame *f_frame; /* points to the frame data */
PyObject *f_trace; /* Trace function */
int f_lineno; /* Current line number. Only valid if non-zero */
int f_last_traced_line; /* The last line traced for this frame */
char f_trace_lines; /* Emit per-line trace events? */
char f_trace_opcodes; /* Emit per-opcode trace events? */
char f_fast_as_locals; /* Have the fast locals of this frame been converted to a dict? */

5
Include/internal/pycore_instruments.h
View file

@ -69,13 +69,13 @@ _Py_call_instrumentation(PyThreadState *tstate, int event,
extern int
_Py_call_instrumentation_line(PyThreadState *tstate, _PyInterpreterFrame* frame,
_Py_CODEUNIT *instr);
_Py_CODEUNIT *instr, _Py_CODEUNIT *prev);
extern int
_Py_call_instrumentation_instruction(
PyThreadState *tstate, _PyInterpreterFrame* frame, _Py_CODEUNIT *instr);
int
_Py_CODEUNIT *
_Py_call_instrumentation_jump(
PyThreadState *tstate, int event,
_PyInterpreterFrame *frame, _Py_CODEUNIT *instr, _Py_CODEUNIT *target);
@ -100,6 +100,7 @@ extern int
_Py_Instrumentation_GetLine(PyCodeObject *code, int index);
extern PyObject _PyInstrumentation_MISSING;
extern PyObject _PyInstrumentation_DISABLE;
#ifdef __cplusplus
}