1 files changed, 41 insertions, 0 deletions
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/MemoryFailPoint.Unix.cs b/src/System.Private.CoreLib/shared/System/Runtime/MemoryFailPoint.Unix.cs
new file mode 100644
index 0000000000..2f53052001
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/MemoryFailPoint.Unix.cs
@@ -0,0 +1,41 @@
+// 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.
+
+namespace System.Runtime
+{
+    public sealed partial class MemoryFailPoint
+    {
+        private static ulong GetTopOfMemory()
+        {
+            // These values are optimistic assumptions. In reality the value will
+            // often be lower.
+            return IntPtr.Size == 4 ? uint.MaxValue : ulong.MaxValue;
+        }
+
+        private static bool CheckForAvailableMemory(out ulong availPageFile, out ulong totalAddressSpaceFree)
+        {
+            // TODO: Implement
+            availPageFile = 0;
+            totalAddressSpaceFree = 0;
+            return false;
+        }
+
+        // Based on the shouldThrow parameter, this will throw an exception, or 
+        // returns whether there is enough space.  In all cases, we update
+        // our last known free address space, hopefully avoiding needing to 
+        // probe again.
+        private static bool CheckForFreeAddressSpace(ulong size, bool shouldThrow)
+        {
+            // Unreachable until CheckForAvailableMemory is implemented
+            return false;
+        }
+
+        // Allocate a specified number of bytes, commit them and free them. This should enlarge
+        // page file if necessary and possible.
+        private static void GrowPageFileIfNecessaryAndPossible(UIntPtr numBytes)
+        {
+            // Unreachable until CheckForAvailableMemory is implemented
+        }
+    }
+}