[UCRT] Import Microsoft.Windows.SDK.CRTSource version 10.0.22621.3

Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3
License: MIT

sdk/lib/ucrt/heap/new_mode.cpp

@@ -0,0 +1,31 @@
+//
+// new_mode.cpp
+//
+//      Copyright (c) Microsoft Corporation. All rights reserved.
+//
+// Definition of _set_new_mode and _query_new_mode, which provide access to the
+// _newmode global flag.
+//
+#include <corecrt_internal.h>
+#include <new.h>
+
+
+
+static __crt_state_management::dual_state_global<long> __acrt_global_new_mode;
+
+
+
+// Sets the _newmode flag to the new value 'mode' and return the old mode.
+extern "C" int __cdecl _set_new_mode(int const mode)
+{
+    // The only valid values of _newmode are 0 and 1:
+    _VALIDATE_RETURN(mode == 0 || mode == 1, EINVAL, -1);
+
+    return static_cast<int>(_InterlockedExchange(&__acrt_global_new_mode.value(), mode));
+}
+
+// Gets the current value of the _newmode flag.
+extern "C" int __cdecl _query_new_mode()
+{
+    return static_cast<int>(__crt_interlocked_read(&__acrt_global_new_mode.value()));
+}