bpo-40241: Add PyObject_GC_IsTracked and PyObject_GC_IsFinalized to the public C-API (GH-19461)

Add the functions PyObject_GC_IsTracked and PyObject_GC_IsFinalized to the public API to allow to query if Python objects are being currently tracked or have been already finalized by the garbage collector respectively.

1 files changed, 18 insertions, 0 deletions

diff --git a/Modules/gcmodule.c b/Modules/gcmodule.c
index 1bc41fb..1754182 100644
--- a/Modules/gcmodule.c
+++ b/Modules/gcmodule.c
@@ -2312,3 +2312,21 @@ PyObject_GC_Del(void *op)
     }
     PyObject_FREE(g);
 }
+
+int
+PyObject_GC_IsTracked(PyObject* obj)
+{
+    if (PyObject_IS_GC(obj) && _PyObject_GC_IS_TRACKED(obj)) {
+        return 1;
+    }
+    return 0;
+}
+
+int
+PyObject_GC_IsFinalized(PyObject *obj)
+{
+    if (PyObject_IS_GC(obj) && _PyGCHead_FINALIZED(AS_GC(obj))) {
+         return 1;
+    }
+    return 0;
+}