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, 13 insertions, 1 deletions

diff --git a/Include/internal/pycore_interp.h b/Include/internal/pycore_interp.h
index d64a68c..86ae3d8 100644
--- a/Include/internal/pycore_interp.h
+++ b/Include/internal/pycore_interp.h
@@ -24,6 +24,7 @@ extern "C" {
 #include "pycore_genobject.h"     // struct _Py_async_gen_state
 #include "pycore_gc.h"            // struct _gc_runtime_state
 #include "pycore_import.h"        // struct _import_state
+#include "pycore_instruments.h"   // PY_MONITORING_EVENTS
 #include "pycore_list.h"          // struct _Py_list_state
 #include "pycore_global_objects.h"  // struct _Py_interp_static_objects
 #include "pycore_object_state.h"   // struct _py_object_state
@@ -37,7 +38,6 @@ struct _Py_long_state {
     int max_str_digits;
 };
 
-
 /* interpreter state */
 
 /* PyInterpreterState holds the global state for one of the runtime's
@@ -49,6 +49,9 @@ struct _is {
 
     PyInterpreterState *next;
 
+    uint64_t monitoring_version;
+    uint64_t last_restart_version;
+
     struct pythreads {
         uint64_t next_unique_id;
         /* The linked list of threads, newest first. */
@@ -148,6 +151,15 @@ struct _is {
     struct callable_cache callable_cache;
     PyCodeObject *interpreter_trampoline;
 
+    _Py_Monitors monitors;
+    bool f_opcode_trace_set;
+    bool sys_profile_initialized;
+    bool sys_trace_initialized;
+    Py_ssize_t sys_profiling_threads; /* Count of threads with c_profilefunc set */
+    Py_ssize_t sys_tracing_threads; /* Count of threads with c_tracefunc set */
+    PyObject *monitoring_callables[PY_MONITORING_TOOL_IDS][PY_MONITORING_EVENTS];
+    PyObject *monitoring_tool_names[PY_MONITORING_TOOL_IDS];
+
     struct _Py_interp_cached_objects cached_objects;
     struct _Py_interp_static_objects static_objects;