110 lines
3.1 KiB
C#
110 lines
3.1 KiB
C#
//----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//----------------------------------------------------------------------------
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namespace System.ServiceModel
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{
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using System.Runtime;
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static class OSEnvironmentHelper
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{
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private static readonly OSVersion currentVersion;
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private static readonly byte currentServicePack;
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static OSEnvironmentHelper()
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{
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currentServicePack = (byte)Environment.OSVersion.Version.MajorRevision;
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int major = Environment.OSVersion.Version.Major;
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int minor = Environment.OSVersion.Version.Minor;
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if ((major < 5) || ((major == 5) && (minor == 0)))
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{
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currentVersion = OSVersion.PreWinXP;
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}
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if ((major == 5) && (minor == 1))
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{
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currentVersion = OSVersion.WinXP;
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}
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else if ((major == 5) && (minor == 2))
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{
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currentVersion = OSVersion.Win2003;
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}
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else if ((major == 6) && (minor == 0))
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{
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currentVersion = OSVersion.WinVista;
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}
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else if ((major == 6) && (minor == 1))
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{
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currentVersion = OSVersion.Win7;
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}
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else if ((major == 6) && (minor == 2))
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{
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currentVersion = OSVersion.Win8;
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}
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else if ((major > 6) ||
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((major == 6) && (minor > 2)))
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{
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currentVersion = OSVersion.PostWin8;
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}
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else
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{
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// This should only be possible if major == 5 and minor > 2
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Fx.Assert(false, "Unknown OS");
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currentVersion = OSVersion.Unknown;
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}
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}
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internal static bool IsVistaOrGreater
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{
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get
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{
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return IsAtLeast(OSVersion.WinVista);
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}
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}
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internal static bool IsApplicationTargeting45
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{
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get
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{
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#pragma warning disable 0618
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return System.Net.WebSockets.WebSocket.IsApplicationTargeting45();
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#pragma warning restore 0618
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}
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}
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internal static int ProcessorCount
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{
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get
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{
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return Environment.ProcessorCount;
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}
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}
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internal static bool IsAtLeast(OSVersion version)
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{
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return IsAtLeast(version, 0);
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}
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static bool IsAtLeast(OSVersion version, byte servicePack)
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{
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Fx.Assert(version != OSVersion.Unknown, "Unknown OS");
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if (servicePack == 0)
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{
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return version <= currentVersion;
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}
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// If a SP value is provided and we have the same OS version, compare SP values
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if (version == currentVersion)
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{
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return servicePack <= currentServicePack;
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}
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return version < currentVersion;
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}
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}
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}
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