review.tizen.org Git - platform/upstream/dotnet/runtime.git/blob

   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
   4 using System.Diagnostics;
   5
   6 namespace System.Runtime.InteropServices
   7 {
   8     public static partial class RuntimeInformation
   9     {
  10         private static string? s_osDescription;
  11         private static readonly object s_osLock = new object();
  12         private static readonly object s_processLock = new object();
  13         private static Architecture? s_osArch;
  14         private static Architecture? s_processArch;
  15
  16         public static bool IsOSPlatform(OSPlatform osPlatform)
  17         {
  18             return OSPlatform.Windows == osPlatform;
  19         }
  20
  21         public static string OSDescription
  22         {
  23             get
  24             {
  25                 string? osDescription = s_osDescription;
  26                 if (osDescription is null)
  27                 {
  28                     OperatingSystem os = Environment.OSVersion;
  29                     Version v = os.Version;
  30
  31                     const string Version = "Microsoft Windows";
  32                     s_osDescription = osDescription = string.IsNullOrEmpty(os.ServicePack) ?
  33                         $"{Version} {(uint)v.Major}.{(uint)v.Minor}.{(uint)v.Build}" :
  34                         $"{Version} {(uint)v.Major}.{(uint)v.Minor}.{(uint)v.Build} {os.ServicePack}";
  35                 }
  36
  37                 return osDescription;
  38             }
  39         }
  40
  41         public static Architecture OSArchitecture
  42         {
  43             get
  44             {
  45                 lock (s_osLock)
  46                 {
  47                     if (null == s_osArch)
  48                     {
  49                         Interop.Kernel32.SYSTEM_INFO sysInfo;
  50                         Interop.Kernel32.GetNativeSystemInfo(out sysInfo);
  51
  52                         switch ((Interop.Kernel32.ProcessorArchitecture)sysInfo.wProcessorArchitecture)
  53                         {
  54                             case Interop.Kernel32.ProcessorArchitecture.Processor_Architecture_ARM64:
  55                                 s_osArch = Architecture.Arm64;
  56                                 break;
  57                             case Interop.Kernel32.ProcessorArchitecture.Processor_Architecture_ARM:
  58                                 s_osArch = Architecture.Arm;
  59                                 break;
  60                             case Interop.Kernel32.ProcessorArchitecture.Processor_Architecture_AMD64:
  61                                 s_osArch = Architecture.X64;
  62                                 break;
  63                             case Interop.Kernel32.ProcessorArchitecture.Processor_Architecture_INTEL:
  64                                 s_osArch = Architecture.X86;
  65                                 break;
  66                         }
  67
  68                     }
  69                 }
  70
  71                 Debug.Assert(s_osArch != null);
  72                 return s_osArch.Value;
  73             }
  74         }
  75
  76         public static Architecture ProcessArchitecture
  77         {
  78             get
  79             {
  80                 lock (s_processLock)
  81                 {
  82                     if (null == s_processArch)
  83                     {
  84                         Interop.Kernel32.SYSTEM_INFO sysInfo;
  85                         Interop.Kernel32.GetSystemInfo(out sysInfo);
  86
  87                         switch ((Interop.Kernel32.ProcessorArchitecture)sysInfo.wProcessorArchitecture)
  88                         {
  89                             case Interop.Kernel32.ProcessorArchitecture.Processor_Architecture_ARM64:
  90                                 s_processArch = Architecture.Arm64;
  91                                 break;
  92                             case Interop.Kernel32.ProcessorArchitecture.Processor_Architecture_ARM:
  93                                 s_processArch = Architecture.Arm;
  94                                 break;
  95                             case Interop.Kernel32.ProcessorArchitecture.Processor_Architecture_AMD64:
  96                                 s_processArch = Architecture.X64;
  97                                 break;
  98                             case Interop.Kernel32.ProcessorArchitecture.Processor_Architecture_INTEL:
  99                                 s_processArch = Architecture.X86;
 100                                 break;
 101                         }
 102                     }
 103                 }
 104
 105                 Debug.Assert(s_processArch != null);
 106                 return s_processArch.Value;
 107             }
 108         }
 109     }
 110 }