GH-103082: Implementation of PEP 669: Low Impact Monitoring for CPython (GH-103083)

* The majority of the monitoring code is in instrumentation.c

* The new instrumentation bytecodes are in bytecodes.c

* legacy_tracing.c adapts the new API to the old sys.setrace and sys.setprofile APIs

1 files changed, 1 insertions, 10 deletions

diff --git a/Include/cpython/pystate.h b/Include/cpython/pystate.h
index 3efb241..ea6ed8d 100644
--- a/Include/cpython/pystate.h
+++ b/Include/cpython/pystate.h
@@ -58,12 +58,6 @@ typedef int (*Py_tracefunc)(PyObject *, PyFrameObject *, int, PyObject *);
 #define PyTrace_C_RETURN 6
 #define PyTrace_OPCODE 7
 
-
-typedef struct {
-    PyCodeObject *code; // The code object for the bounds. May be NULL.
-    PyCodeAddressRange bounds; // Only valid if code != NULL.
-} PyTraceInfo;
-
 // Internal structure: you should not use it directly, but use public functions
 // like PyThreadState_EnterTracing() and PyThreadState_LeaveTracing().
 typedef struct _PyCFrame {
@@ -77,7 +71,6 @@ typedef struct _PyCFrame {
      * discipline and make sure that instances of this struct cannot
      * accessed outside of their lifetime.
      */
-    uint8_t use_tracing;  // 0 or 255 (or'ed into opcode, hence 8-bit type)
     /* Pointer to the currently executing frame (it can be NULL) */
     struct _PyInterpreterFrame *current_frame;
     struct _PyCFrame *previous;
@@ -157,7 +150,7 @@ struct _ts {
        This is to prevent the actual trace/profile code from being recorded in
        the trace/profile. */
     int tracing;
-    int tracing_what; /* The event currently being traced, if any. */
+    int what_event; /* The event currently being monitored, if any. */
 
     /* Pointer to current _PyCFrame in the C stack frame of the currently,
      * or most recently, executing _PyEval_EvalFrameDefault. */
@@ -228,8 +221,6 @@ struct _ts {
     /* Unique thread state id. */
     uint64_t id;
 
-    PyTraceInfo trace_info;
-
     _PyStackChunk *datastack_chunk;
     PyObject **datastack_top;
     PyObject **datastack_limit;