bpo-39489: Remove COUNT_ALLOCS special build (GH-18259)

Remove:

* COUNT_ALLOCS macro
* sys.getcounts() function
* SHOW_ALLOC_COUNT code in listobject.c
* SHOW_TRACK_COUNT code in tupleobject.c
* PyConfig.show_alloc_count field
* -X showalloccount command line option
* @test.support.requires_type_collecting decorator

1 files changed, 0 insertions, 36 deletions

diff --git a/Objects/listobject.c b/Objects/listobject.c
index 2c07ceb..c93a0fe 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -94,29 +94,6 @@ list_preallocate_exact(PyListObject *self, Py_ssize_t size)
     return 0;
 }
 
-/* Debug statistic to compare allocations with reuse through the free list */
-#undef SHOW_ALLOC_COUNT
-#ifdef SHOW_ALLOC_COUNT
-static size_t count_alloc = 0;
-static size_t count_reuse = 0;
-
-static void
-show_alloc(void)
-{
-    PyInterpreterState *interp = _PyInterpreterState_Get();
-    if (!interp->config.show_alloc_count) {
-        return;
-    }
-
-    fprintf(stderr, "List allocations: %" PY_FORMAT_SIZE_T "d\n",
-        count_alloc);
-    fprintf(stderr, "List reuse through freelist: %" PY_FORMAT_SIZE_T
-        "d\n", count_reuse);
-    fprintf(stderr, "%.2f%% reuse rate\n\n",
-        (100.0*count_reuse/(count_alloc+count_reuse)));
-}
-#endif
-
 /* Empty list reuse scheme to save calls to malloc and free */
 #ifndef PyList_MAXFREELIST
 #define PyList_MAXFREELIST 80
@@ -156,13 +133,6 @@ PyObject *
 PyList_New(Py_ssize_t size)
 {
     PyListObject *op;
-#ifdef SHOW_ALLOC_COUNT
-    static int initialized = 0;
-    if (!initialized) {
-        Py_AtExit(show_alloc);
-        initialized = 1;
-    }
-#endif
 
     if (size < 0) {
         PyErr_BadInternalCall();
@@ -172,16 +142,10 @@ PyList_New(Py_ssize_t size)
         numfree--;
         op = free_list[numfree];
         _Py_NewReference((PyObject *)op);
-#ifdef SHOW_ALLOC_COUNT
-        count_reuse++;
-#endif
     } else {
         op = PyObject_GC_New(PyListObject, &PyList_Type);
         if (op == NULL)
             return NULL;
-#ifdef SHOW_ALLOC_COUNT
-        count_alloc++;
-#endif
     }
     if (size <= 0)
         op->ob_item = NULL;