bpo-36142: Add _PyMem_GetDebugAllocatorsName() (GH-12185)

The development mode now uses the effective name of the debug memory
allocator ("pymalloc_debug" or "malloc_debug"). So the name doesn't
change after setting the memory allocator.

1 files changed, 14 insertions, 0 deletions

diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c
index 1c2a320..1afbcca 100644
--- a/Objects/obmalloc.c
+++ b/Objects/obmalloc.c
@@ -221,6 +221,20 @@ static PyMemAllocatorEx _PyObject = PYOBJ_ALLOC;
 #endif
 
 
+/* Get the effective name of "debug" memory allocators,
+   as if _PyMem_GetAllocatorsName() is called after
+   _PyMem_SetupAllocators("debug"). */
+const char*
+_PyMem_GetDebugAllocatorsName(void)
+{
+#ifdef WITH_PYMALLOC
+    return "pymalloc_debug";
+#else
+    return "malloc_debug";
+#endif
+}
+
+
 static int
 pymem_set_default_allocator(PyMemAllocatorDomain domain, int debug,
                             PyMemAllocatorEx *old_alloc)