public static byte[] PerfMapV1SignatureHelper(IEnumerable <AssemblyInfo> inputAssemblies, TargetDetails details)
{
IEnumerable <AssemblyInfo> orderedInputs = inputAssemblies.OrderBy(asm => asm.Name, StringComparer.OrdinalIgnoreCase);
List <byte> inputHash = new List <byte>();
foreach (AssemblyInfo inputAssembly in orderedInputs)
{
inputHash.AddRange(inputAssembly.Mvid.ToByteArray());
}
PerfmapTokensForTarget targetTokens = TranslateTargetDetailsToPerfmapConstants(details);
byte[] buffer = new byte[12];
if (!BitConverter.TryWriteBytes(buffer.AsSpan(0, sizeof(uint)), (uint)targetTokens.OperatingSystem) ||
!BitConverter.TryWriteBytes(buffer.AsSpan(4, sizeof(uint)), (uint)targetTokens.Architecture) ||
!BitConverter.TryWriteBytes(buffer.AsSpan(8, sizeof(uint)), (uint)targetTokens.Abi))
{
throw new InvalidOperationException();
}
if (!BitConverter.IsLittleEndian)
{
buffer.AsSpan(0, sizeof(uint)).Reverse();
buffer.AsSpan(4, sizeof(uint)).Reverse();
buffer.AsSpan(8, sizeof(uint)).Reverse();
}
inputHash.AddRange(buffer);
byte[] hash = MD5.HashData(inputHash.ToArray());
return(hash);
}
private static void WritePerfMapV1Header(IEnumerable <AssemblyInfo> inputAssemblies, TargetDetails details, PerfMapWriter perfMapWriter)
{
byte[] signature = PerfMapV1SignatureHelper(inputAssemblies, details);
// Make sure these get emitted in this order, other tools in the ecosystem like the symbol uploader and PerfView rely on this.
// In particular, the order of it. Append only.
string signatureFormatted = Convert.ToHexString(signature);
PerfmapTokensForTarget targetTokens = TranslateTargetDetailsToPerfmapConstants(details);
perfMapWriter.WriteLine(signatureFormatted, (uint)PerfMapPseudoRVAToken.OutputSignature, HeaderEntriesPseudoLength);
perfMapWriter.WriteLine(CurrentFormatVersion.ToString(), (uint)PerfMapPseudoRVAToken.FormatVersion, HeaderEntriesPseudoLength);
perfMapWriter.WriteLine(((uint)targetTokens.OperatingSystem).ToString(), (uint)PerfMapPseudoRVAToken.TargetOS, HeaderEntriesPseudoLength);
perfMapWriter.WriteLine(((uint)targetTokens.Architecture).ToString(), (uint)PerfMapPseudoRVAToken.TargetArchitecture, HeaderEntriesPseudoLength);
perfMapWriter.WriteLine(((uint)targetTokens.Abi).ToString(), (uint)PerfMapPseudoRVAToken.TargetABI, HeaderEntriesPseudoLength);
}
