netcore/System.Private.CoreLib/shared/System/DateTime.WinRT.cs

   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3 // See the LICENSE file in the project root for more information.
   4
   5 using System.Runtime.CompilerServices;
   6 using System.Runtime.InteropServices;
   7
   8 namespace System
   9 {
  10     public readonly partial struct DateTime
  11     {
  12         private static unsafe bool SystemSupportsLeapSeconds()
  13         {
  14             Interop.Kernel32.PROCESS_LEAP_SECOND_INFO info;
  15
  16             // Store apps don't have access to an API that would let us find out whether leap seconds have been
  17             // disabled by policy: this implementation will produce slightly different results from what
  18             // we have for Win32. If GetProcessInformation succeeds, we have to act as if leap seconds existed.
  19             // They could still have been disabled by policy, but we have no way to check for that.
  20             return Interop.Kernel32.GetProcessInformation(
  21                 Interop.Kernel32.GetCurrentProcess(),
  22                 Interop.Kernel32.ProcessLeapSecondInfo,
  23                 &info,
  24                 sizeof(Interop.Kernel32.PROCESS_LEAP_SECOND_INFO)) != Interop.BOOL.FALSE;
  25         }
  26     }
  27 }