Move MemoryFailPoint to shared CoreLib partition (#22104)

* Move MemoryFailPoint to shared CoreLib partition.

* Split MemoryFailPoint into Unix and Windows versions.

* Replace MemoryFailPoint.GetMemorySettings FCall with GC.GetSegmentSize to make sharing with CoreRT easier.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/System.Private.CoreLib/shared/Interop/Windows/Kernel32/Interop.VirtualQuery.cs b/src/System.Private.CoreLib/shared/Interop/Windows/Kernel32/Interop.VirtualQuery.cs
new file mode 100644
index 0000000000..4cce807068
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/Interop/Windows/Kernel32/Interop.VirtualQuery.cs
@@ -0,0 +1,15 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal partial class Interop
+{
+    internal partial class Kernel32
+    {
+        [DllImport(Libraries.Kernel32, SetLastError = true)]
+        unsafe internal static extern UIntPtr VirtualQuery(void* address, ref MEMORY_BASIC_INFORMATION buffer, UIntPtr sizeOfBuffer);
+    }
+}