Leap Seconds Support

src/BuildIntegration/Microsoft.NETCore.Native.Windows.props

@@ -21,9 +21,9 @@ See the LICENSE file in the project root for more information.
     <FullRuntimeName>Runtime</FullRuntimeName>
     <FullRuntimeName Condition="'$(ServerGarbageCollection)' != ''">Runtime.ServerGC</FullRuntimeName>
   </PropertyGroup>
-    
+
   <!-- Part of workaround for lack of secondary build artifact import - https://github.com/Microsoft/msbuild/issues/2807 -->
-  <!-- Ensure that runtime-specific paths have already been set -->  
+  <!-- Ensure that runtime-specific paths have already been set -->
   <Target Name="SetupOSSpecificProps" DependsOnTargets="$(IlcDynamicBuildPropertyDependencies)">
     <ItemGroup>
       <CppCompilerAndLinkerArg Include="/I$(IlcPath)\inc" />
@@ -47,9 +47,10 @@ See the LICENSE file in the project root for more information.
       <NativeLibrary Condition="$(NativeCodeGen) == 'wasm'" Include="$(IlcPath)\sdk\PortableRuntime.lib" />
       <NativeLibrary Condition="'$(IlcMultiModule)' == 'true' and $(NativeCodeGen) == ''" Include="$(SharedLibrary)" />
     </ItemGroup>
-  
+
     <ItemGroup>
       <NativeLibrary Include="kernel32.lib" />
+      <NativeLibrary Include="ntdll.lib" />
       <NativeLibrary Include="user32.lib" />
       <NativeLibrary Include="gdi32.lib" />
       <NativeLibrary Include="winspool.lib" />
@@ -62,7 +63,7 @@ See the LICENSE file in the project root for more information.
       <NativeLibrary Include="bcrypt.lib" />
       <NativeLibrary Include="normaliz.lib" />
     </ItemGroup>
-    
+
     <ItemGroup>
       <LinkerArg Condition="$(NativeLib) == 'Shared'" Include="/DLL" />
       <LinkerArg Include="@(NativeLibrary->'&quot;%(Identity)&quot;')" />
@@ -71,11 +72,11 @@ See the LICENSE file in the project root for more information.
       <LinkerArg Include="/INCREMENTAL:NO" />
       <LinkerArg Condition="'$(OutputType)' == 'WinExe'" Include="/SUBSYSTEM:WINDOWS /ENTRY:wmainCRTStartup" />
     </ItemGroup>
-  
+
     <ItemGroup>
       <!-- TODO <LinkerArg Include="/MACHINE:X64" /> -->
     </ItemGroup>
-   
+
     <ItemGroup Condition="'$(Configuration)' != 'Debug'">
       <LinkerArg Include="/OPT:REF" />
       <LinkerArg Include="/OPT:ICF" />

src/Common/src/Interop/Windows/NtDll/Interop.NtQuerySystemInformation.cs

@@ -0,0 +1,24 @@
+// 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 NtDll
+    {
+        [DllImport(Libraries.NtDll, SetLastError = true)]
+        internal static unsafe extern int NtQuerySystemInformation(int SystemInformationClass, void* SystemInformation, int SystemInformationLength, IntPtr ReturnLength);
+
+        [StructLayout(LayoutKind.Sequential)]
+        internal struct SYSTEM_LEAP_SECOND_INFORMATION
+        {
+            public bool Enabled;
+            public uint Flags;
+        }
+
+        internal const int SystemLeapSecondInformation = 206;
+    }
+}

src/Common/src/Interop/Windows/kernel32/Interop.FileTimeToSystemTime.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)]
+        internal static unsafe extern bool FileTimeToSystemTime(ref long lpFileTime, ref FullSystemTime lpSystemTime);
+    }
+}

src/Common/src/Interop/Windows/kernel32/Interop.FullSystemTime.cs

@@ -0,0 +1,59 @@
+// 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
+    {
+        // FullSystemTime struct matches Windows SYSTEMTIME struct, except we added the extra nanoSeconds field to store
+        // more precise time.
+        [StructLayout(LayoutKind.Sequential)]
+        internal struct FullSystemTime
+        {
+            internal FullSystemTime(int year, int month, DayOfWeek dayOfWeek, int day, int hour, int minute, int second)
+            {
+                wYear = (ushort) year;
+                wMonth = (ushort) month;
+                wDayOfWeek = (ushort) dayOfWeek;
+                wDay = (ushort) day;
+                wHour = (ushort) hour;
+                wMinute = (ushort) minute;
+                wSecond = (ushort) second;
+                wMillisecond = 0;
+                hundredNanoSecond = 0;
+            }
+
+            internal FullSystemTime(long ticks)
+            {
+                DateTime dt = new DateTime(ticks);
+
+                int year, month, day;
+                dt.GetDatePart(out year, out month, out day);
+
+                wYear = (ushort) year;
+                wMonth = (ushort) month;
+                wDayOfWeek = (ushort) dt.DayOfWeek;
+                wDay = (ushort) day;
+                wHour = (ushort) dt.Hour;
+                wMinute = (ushort) dt.Minute;
+                wSecond = (ushort) dt.Second;
+                wMillisecond = (ushort) dt.Millisecond;
+                hundredNanoSecond = 0;
+            }
+
+            internal ushort wYear;
+            internal ushort wMonth;
+            internal ushort wDayOfWeek;
+            internal ushort wDay;
+            internal ushort wHour;
+            internal ushort wMinute;
+            internal ushort wSecond;
+            internal ushort wMillisecond;
+            internal long   hundredNanoSecond;
+        };
+    }
+}

src/Common/src/Interop/Windows/kernel32/Interop.GetProcessInformation.cs

@@ -0,0 +1,17 @@
+// 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
+    {
+        internal const int ProcessLeapSecondInfo = 8;
+
+        [DllImport(Libraries.Kernel32, SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true)]
+        internal static extern bool GetProcessInformation(IntPtr hProcess, int ProcessInformationClass, ref long processInformation, int ProcessInformationSize);
+    }
+}

src/Common/src/Interop/Windows/kernel32/Interop.GetSystemTime.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)]
+        internal static unsafe extern void GetSystemTime(ref FullSystemTime lpSystemTime);
+    }
+}

src/Common/src/Interop/Windows/kernel32/Interop.SystemTimeToFileTime.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.Runtime.InteropServices;
+
+internal partial class Interop
+{
+    internal partial class Kernel32
+    {
+        // api-ms-win-core-timezone-l1-1-0.dll
+        [DllImport(Libraries.Kernel32, SetLastError = true)]
+        internal static extern bool SystemTimeToFileTime(ref FullSystemTime lpSystemTime, out long lpFileTime);
+    }
+}

src/Common/src/Interop/Windows/kernel32/Interop.TzSpecificLocalTimeToSystemTime.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)]
+        internal static extern bool TzSpecificLocalTimeToSystemTime(IntPtr lpTimeZoneInformation, ref FullSystemTime lpLocalTime, ref FullSystemTime lpUniversalTime);
+    }
+}