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bpo-46072: Add some frame stats. (GH-31060)
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@ -303,6 +303,8 @@ typedef struct _opcode_stats {
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typedef struct _call_stats {
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uint64_t inlined_py_calls;
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uint64_t pyeval_calls;
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uint64_t frames_pushed;
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uint64_t frame_objects_created;
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} CallStats;
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typedef struct _object_stats {
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@ -794,6 +794,7 @@ init_frame(InterpreterFrame *frame, PyFunctionObject *func, PyObject *locals)
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PyFrameObject*
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_PyFrame_New_NoTrack(PyCodeObject *code)
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{
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CALL_STAT_INC(frame_objects_created);
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int slots = code->co_nlocalsplus + code->co_stacksize;
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PyFrameObject *f = PyObject_GC_NewVar(PyFrameObject, &PyFrame_Type, slots);
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if (f == NULL) {
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@ -2242,6 +2242,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, InterpreterFrame *frame, int thr
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if (new_frame == NULL) {
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goto error;
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}
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CALL_STAT_INC(frames_pushed);
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_PyFrame_InitializeSpecials(new_frame, getitem,
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NULL, code->co_nlocalsplus);
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STACK_SHRINK(2);
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@ -4660,6 +4661,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, InterpreterFrame *frame, int thr
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if (new_frame == NULL) {
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goto error;
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}
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CALL_STAT_INC(inlined_py_calls);
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STACK_SHRINK(argcount);
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for (int i = 0; i < argcount; i++) {
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new_frame->localsplus[i] = stack_pointer[i];
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@ -4690,6 +4692,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, InterpreterFrame *frame, int thr
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if (new_frame == NULL) {
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goto error;
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}
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CALL_STAT_INC(inlined_py_calls);
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STACK_SHRINK(argcount);
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for (int i = 0; i < argcount; i++) {
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new_frame->localsplus[i] = stack_pointer[i];
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@ -4708,7 +4711,6 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, InterpreterFrame *frame, int thr
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_PyFrame_SetStackPointer(frame, stack_pointer);
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new_frame->previous = frame;
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frame = cframe.current_frame = new_frame;
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CALL_STAT_INC(inlined_py_calls);
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goto start_frame;
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}
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@ -6078,6 +6080,7 @@ _PyEvalFramePushAndInit(PyThreadState *tstate, PyFunctionObject *func,
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{
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PyCodeObject * code = (PyCodeObject *)func->func_code;
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size_t size = code->co_nlocalsplus + code->co_stacksize + FRAME_SPECIALS_SIZE;
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CALL_STAT_INC(frames_pushed);
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InterpreterFrame *frame = _PyThreadState_BumpFramePointer(tstate, size);
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if (frame == NULL) {
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goto fail;
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@ -1,6 +1,7 @@
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#include "Python.h"
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#include "frameobject.h"
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#include "pycore_code.h" // stats
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#include "pycore_frame.h"
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#include "pycore_object.h" // _PyObject_GC_UNTRACK()
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#include "opcode.h"
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@ -113,6 +114,7 @@ _PyFrame_Push(PyThreadState *tstate, PyFunctionObject *func)
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{
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PyCodeObject *code = (PyCodeObject *)func->func_code;
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size_t size = code->co_nlocalsplus + code->co_stacksize + FRAME_SPECIALS_SIZE;
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CALL_STAT_INC(frames_pushed);
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InterpreterFrame *new_frame = _PyThreadState_BumpFramePointer(tstate, size);
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if (new_frame == NULL) {
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return NULL;
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@ -3,6 +3,7 @@
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#include "Python.h"
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#include "pycore_ceval.h"
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#include "pycore_code.h" // stats
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#include "pycore_frame.h"
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#include "pycore_initconfig.h"
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#include "pycore_object.h" // _PyType_InitCache()
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@ -2219,6 +2220,7 @@ _PyThreadState_PushFrame(PyThreadState *tstate, PyFunctionObject *func, PyObject
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int nlocalsplus = code->co_nlocalsplus;
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size_t size = nlocalsplus + code->co_stacksize +
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FRAME_SPECIALS_SIZE;
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CALL_STAT_INC(frames_pushed);
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InterpreterFrame *frame = _PyThreadState_BumpFramePointer(tstate, size);
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if (frame == NULL) {
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return NULL;
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@ -169,6 +169,8 @@ print_call_stats(FILE *out, CallStats *stats)
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{
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fprintf(out, "Calls to PyEval_EvalDefault: %" PRIu64 "\n", stats->pyeval_calls);
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fprintf(out, "Calls to Python functions inlined: %" PRIu64 "\n", stats->inlined_py_calls);
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fprintf(out, "Frames pushed: %" PRIu64 "\n", stats->frames_pushed);
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fprintf(out, "Frame objects created: %" PRIu64 "\n", stats->frame_objects_created);
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}
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static void
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@ -106,6 +106,9 @@ def main():
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for key, value in stats.items():
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if "Calls to" in key:
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print(f" {key}: {value} {100*value/total:0.1f}%")
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for key, value in stats.items():
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if key.startswith("Frame"):
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print(f" {key}: {value} {100*value/total:0.1f}%")
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print("Object stats:")
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total = stats.get("Object new values")
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for key, value in stats.items():
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