Remove heavywieght locking--not needed

Author: Fidget-Spinner

Python/bytecodes.c

@@ -3019,15 +3019,15 @@ dummy_func(
             }
             PyCodeObject *code = _PyFrame_GetCode(frame);
 
-            LOCK_OBJECT_SLOW(code);
             _PyExecutorObject *executor = code->co_executors->executors[oparg & 255];
             // We are responsible for cleaning up after ourselves.
             if (!FT_ATOMIC_LOAD_UINT8_RELAXED(executor->vm_data.valid)) {
                 opcode = executor->vm_data.opcode;
                 oparg = (oparg & ~255) | executor->vm_data.oparg;
                 next_instr = this_instr;
+                Py_BEGIN_CRITICAL_SECTION(code);
                 _Py_ExecutorDetach(executor);
-                UNLOCK_OBJECT_SLOW(code);
+                Py_END_CRITICAL_SECTION();
                 DISPATCH_GOTO();
             }
             assert(tstate->current_executor == NULL);
@@ -3043,15 +3043,10 @@ dummy_func(
                 if (_PyOpcode_Caches[_PyOpcode_Deopt[opcode]]) {
                     PAUSE_ADAPTIVE_COUNTER(this_instr[1].counter);
                 }
-#ifdef Py_GIL_DISABLED
-                UNLOCK_OBJECT_SLOW(code);
-#endif
                 DISPATCH_GOTO();
             }
             assert(executor != ((_PyThreadStateImpl *)tstate)->jit_executor_state.cold_executor);
             tstate->jit_exit = NULL;
-            Py_INCREF(executor);
-            UNLOCK_OBJECT_SLOW(code);
             TIER1_TO_TIER2(executor);
             #else
             Py_FatalError("ENTER_EXECUTOR is not supported in this build");

Python/ceval_macros.h

@@ -294,13 +294,9 @@ GETITEM(PyObject *v, Py_ssize_t i) {
 #ifdef Py_GIL_DISABLED
 #  define LOCK_OBJECT(op) PyMutex_LockFast(&(_PyObject_CAST(op))->ob_mutex)
 #  define UNLOCK_OBJECT(op) PyMutex_Unlock(&(_PyObject_CAST(op))->ob_mutex)
-#  define LOCK_OBJECT_SLOW(op) PyMutex_LockFast(&(_PyObject_CAST(op))->ob_mutex)
-#  define UNLOCK_OBJECT_SLOW(op) PyMutex_Unlock(&(_PyObject_CAST(op))->ob_mutex)
 #else
 #  define LOCK_OBJECT(op) (1)
 #  define UNLOCK_OBJECT(op) ((void)0)
-#  define LOCK_OBJECT_SLOW(op) ((void)0)
-#  define UNLOCK_OBJECT_SLOW(op) ((void)0)
 #endif
 
 #define GLOBALS() frame->f_globals