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#region Copyright notice and license
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Collections.Concurrent;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Threading;
namespace Grpc.Core.Internal
{
/// <summary>
/// Utility methods for detecting platform and architecture.
/// </summary>
internal static class PlatformApis
{
static readonly bool isLinux;
static readonly bool isMacOSX;
static readonly bool isWindows;
static readonly bool isMono;
static readonly bool isNetCore;
static PlatformApis()
{
#if NETSTANDARD1_5
isLinux = RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
isMacOSX = RuntimeInformation.IsOSPlatform(OSPlatform.OSX);
isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
isNetCore = RuntimeInformation.FrameworkDescription.StartsWith(".NET Core");
#else
var platform = Environment.OSVersion.Platform;
// PlatformID.MacOSX is never returned, commonly used trick is to identify Mac is by using uname.
isMacOSX = (platform == PlatformID.Unix && GetUname() == "Darwin");
isLinux = (platform == PlatformID.Unix && !isMacOSX);
isWindows = (platform == PlatformID.Win32NT || platform == PlatformID.Win32S || platform == PlatformID.Win32Windows);
isNetCore = false;
#endif
isMono = Type.GetType("Mono.Runtime") != null;
}
public static bool IsLinux
{
get { return isLinux; }
}
public static bool IsMacOSX
{
get { return isMacOSX; }
}
public static bool IsWindows
{
get { return isWindows; }
}
public static bool IsMono
{
get { return isMono; }
}
/// <summary>
/// true if running on .NET Core (CoreCLR), false otherwise.
/// </summary>
public static bool IsNetCore
{
get { return isNetCore; }
}
public static bool Is64Bit
{
get { return IntPtr.Size == 8; }
}
[DllImport("libc")]
static extern int uname(IntPtr buf);
static string GetUname()
{
var buffer = Marshal.AllocHGlobal(8192);
try
{
if (uname(buffer) == 0)
{
return Marshal.PtrToStringAnsi(buffer);
}
return string.Empty;
}
catch
{
return string.Empty;
}
finally
{
if (buffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(buffer);
}
}
}
}
}
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