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GH-98894: Fix function__return and function__entry dTrace probe missing after GH-103083 #125019

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GH-98894: Fix function__return and function__entry dTrace probe missing after GH-103083 #125019

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f11b7c4
Fix `function__return` and `function__entry` dTrace probe missing aft…
Zheaoli Oct 6, 2024
ac683c0
Update news
Zheaoli Oct 6, 2024
b4d457f
Update generate case
Zheaoli Oct 6, 2024
4810510
Update Misc/NEWS.d/next/Core_and_Builtins/2024-10-06-17-46-24.gh-issu…
Zheaoli Oct 6, 2024
128e856
fix jit ci
Zheaoli Oct 6, 2024
e98e3a2
Merge branch 'main' of https://github.com/python/cpython into manjusa…
Zheaoli May 22, 2025
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Fix function__return and function__entry dTrace probe missing aft… 
…er `GH-103083`
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@Zheaoli
Zheaoli committed Oct 7, 2024
commit f11b7c4385f950b45e1a9fca4f4e9c0bcdb0137e
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Core_and_Builtins/2024-10-06-17-46-24.gh-issue-98894.uG2s-h.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Fix `function__return` and `function__entry` dTrace probe missing after
`GH-103083`
2 changes: 2 additions & 0 deletions Python/bytecodes.c
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Expand Up @@ -986,6 +986,7 @@ dummy_func(
_PyStackRef temp = retval;
DEAD(retval);
SAVE_STACK();
DTRACE_FUNCTION_EXIT();
assert(EMPTY());
_Py_LeaveRecursiveCallPy(tstate);
// GH-99729: We need to unlink the frame *before* clearing it:
Expand Down Expand Up @@ -1173,6 +1174,7 @@ dummy_func(
_PyStackRef temp = retval;
DEAD(retval);
SAVE_STACK();
DTRACE_FUNCTION_EXIT();
tstate->exc_info = gen->gi_exc_state.previous_item;
gen->gi_exc_state.previous_item = NULL;
_Py_LeaveRecursiveCallPy(tstate);
Expand Down
36 changes: 35 additions & 1 deletion Python/ceval.c
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Expand Up @@ -275,6 +275,8 @@ static void monitor_throw(PyThreadState *tstate,
_Py_CODEUNIT *instr);

static int get_exception_handler(PyCodeObject *, int, int*, int*, int*);
static void dtrace_function_entry(_PyInterpreterFrame *);
static void dtrace_function_return(_PyInterpreterFrame *);
static _PyInterpreterFrame *
_PyEvalFramePushAndInit_Ex(PyThreadState *tstate, _PyStackRef func,
PyObject *locals, Py_ssize_t nargs, PyObject *callargs, PyObject *kwargs, _PyInterpreterFrame *previous);
Expand Down Expand Up @@ -820,9 +822,9 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
_Py_Instrument(_PyFrame_GetCode(frame), tstate->interp);
monitor_throw(tstate, frame, frame->instr_ptr);
/* TO DO -- Monitor throw entry. */
DTRACE_FUNCTION_ENTRY();
goto resume_with_error;
}

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/* Local "register" variables.
* These are cached values from the frame and code object. */
_Py_CODEUNIT *next_instr;
Expand All @@ -840,6 +842,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
}

next_instr = frame->instr_ptr;
DTRACE_FUNCTION_ENTRY();
resume_frame:
stack_pointer = _PyFrame_GetStackPointer(frame);

Expand Down Expand Up @@ -3068,6 +3071,37 @@ PyUnstable_Eval_RequestCodeExtraIndex(freefunc free)
return new_index;
}


static void
dtrace_function_entry(_PyInterpreterFrame *frame)
{
const char *filename;
const char *funcname;
int lineno;

PyCodeObject *code = _PyFrame_GetCode(frame);
filename = PyUnicode_AsUTF8(code->co_filename);
funcname = PyUnicode_AsUTF8(code->co_name);
lineno = PyUnstable_InterpreterFrame_GetLine(frame);

PyDTrace_FUNCTION_ENTRY(filename, funcname, lineno);
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}

static void
dtrace_function_return(_PyInterpreterFrame *frame)
{
const char *filename;
const char *funcname;
int lineno;

PyCodeObject *code = _PyFrame_GetCode(frame);
filename = PyUnicode_AsUTF8(code->co_filename);
funcname = PyUnicode_AsUTF8(code->co_name);
lineno = PyUnstable_InterpreterFrame_GetLine(frame);

PyDTrace_FUNCTION_RETURN(filename, funcname, lineno);
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}

/* Implement Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() as functions
for the limited API. */

Expand Down
6 changes: 6 additions & 0 deletions Python/ceval_macros.h
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Expand Up @@ -290,6 +290,12 @@ GETITEM(PyObject *v, Py_ssize_t i) {
#define CONSTS() _PyFrame_GetCode(frame)->co_consts
#define NAMES() _PyFrame_GetCode(frame)->co_names

#define DTRACE_FUNCTION_EXIT() \
if (PyDTrace_FUNCTION_RETURN_ENABLED()) { \
dtrace_function_return(frame); \
}


#define DTRACE_FUNCTION_ENTRY() \
if (PyDTrace_FUNCTION_ENTRY_ENABLED()) { \
dtrace_function_entry(frame); \
Expand Down
6 changes: 6 additions & 0 deletions Python/generated_cases.c.h
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