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#region Copyright notice and license
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#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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