How to use GetMuxerArchitectureByPEHeaderOnWin method of Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Helpers.DotnetHostHelper class

Best Vstest code snippet using Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Helpers.DotnetHostHelper.GetMuxerArchitectureByPEHeaderOnWin

DotnetHostHelper.cs

Source:DotnetHostHelper.cs

...296            EqtTrace.Error($"DotnetHostHelper.GetMuxerFromGlobalRegistrationOnUnix: Exception during '{installLocation}' muxer resolution.\n{ex}");297        }298        return null;299    }300    private PlatformArchitecture? GetMuxerArchitectureByPEHeaderOnWin(string path)301    {302        try303        {304            using Stream stream = _fileHelper.GetStream(path, FileMode.Open, FileAccess.Read);305            using PEReader peReader = new(stream);306            switch (peReader.PEHeaders.CoffHeader.Machine)307            {308                case Machine.Amd64:309                    return PlatformArchitecture.X64;310                case Machine.IA64:311                    return PlatformArchitecture.X64;312                case Machine.Arm64:313                    return PlatformArchitecture.ARM64;314                case Machine.Arm:315                    return PlatformArchitecture.ARM;316                case Machine.I386:317                    return PlatformArchitecture.X86;318                default:319                    break;320            }321        }322        catch (Exception ex)323        {324            EqtTrace.Error($"DotnetHostHelper.GetMuxerArchitectureByPEHeaderOnWin: Failed to get architecture from PEHeader for '{path}'\n{ex}");325        }326        return null;327    }328    // See https://opensource.apple.com/source/xnu/xnu-2050.18.24/EXTERNAL_HEADERS/mach-o/loader.h329    // https://opensource.apple.com/source/xnu/xnu-4570.41.2/osfmk/mach/machine.h.auto.html330    private PlatformArchitecture? GetMuxerArchitectureByMachoOnMac(string path)331    {332        try333        {334            using var headerReader = _fileHelper.GetStream(path, FileMode.Open, FileAccess.Read);335            var magicBytes = new byte[4];336            var cpuInfoBytes = new byte[4];337            headerReader.Read(magicBytes, 0, magicBytes.Length);338            headerReader.Read(cpuInfoBytes, 0, cpuInfoBytes.Length);339            var magic = BitConverter.ToUInt32(magicBytes, 0);340            var cpuInfo = BitConverter.ToUInt32(cpuInfoBytes, 0);341            PlatformArchitecture? architecture = (MacOsCpuType)cpuInfo switch342            {343                MacOsCpuType.Arm64Magic or MacOsCpuType.Arm64Cigam => PlatformArchitecture.ARM64,344                MacOsCpuType.X64Magic or MacOsCpuType.X64Cigam => PlatformArchitecture.X64,345                MacOsCpuType.X86Magic or MacOsCpuType.X86Cigam => PlatformArchitecture.X86,346                _ => null,347            };348            return architecture;349        }350        catch (Exception ex)351        {352            // In case of failure during header reading we must fallback to the next place(default installation path)353            EqtTrace.Error($"DotnetHostHelper.GetMuxerArchitectureByMachoOnMac: Failed to get architecture from Mach-O for '{path}'\n{ex}");354        }355        return null;356    }357    internal enum MacOsCpuType : uint358    {359        Arm64Magic = 0x0100000c,360        Arm64Cigam = 0x0c000001,361        X64Magic = 0x01000007,362        X64Cigam = 0x07000001,363        X86Magic = 0x00000007,364        X86Cigam = 0x07000000365    }366    private bool IsValidArchitectureMuxer(PlatformArchitecture targetArchitecture, string path)367    {368        PlatformArchitecture? muxerPlatform = null;369        if (_environment.OperatingSystem == PlatformOperatingSystem.Windows)370        {371            muxerPlatform = GetMuxerArchitectureByPEHeaderOnWin(path);372        }373        else if (_environment.OperatingSystem == PlatformOperatingSystem.OSX)374        {375            muxerPlatform = GetMuxerArchitectureByMachoOnMac(path);376        }377        if (targetArchitecture != muxerPlatform)378        {379            EqtTrace.Verbose($"DotnetHostHelper.IsValidArchitectureMuxer: Incompatible architecture muxer, target architecture '{targetArchitecture}', actual '{muxerPlatform}'");380            return false;381        }382        EqtTrace.Verbose($"DotnetHostHelper.IsValidArchitectureMuxer: Compatible architecture muxer, target architecture '{targetArchitecture}', actual '{muxerPlatform}'");383        return true;384    }385}...

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