public override ObjectData GetData(NodeFactory factory, bool relocsOnly = false)
{
// Dependencies for this node are tracked by the method code nodes
if (relocsOnly)
{
return(new ObjectData(Array.Empty <byte>(), Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this }));
}
// Ensure the native layout data has been saved, in order to get valid Vertex offsets for the signature Vertices
factory.MetadataManager.NativeLayoutInfo.SaveNativeLayoutInfoWriter(factory);
NativeWriter nativeWriter = new NativeWriter();
VertexHashtable hashtable = new VertexHashtable();
Section nativeSection = nativeWriter.NewSection();
nativeSection.Place(hashtable);
foreach (MethodDesc method in factory.MetadataManager.GetCompiledMethods())
{
if (!IsMethodEligibleForTracking(method))
{
continue;
}
// Get the method pointer vertex
bool getUnboxingStub = method.OwningType.IsValueType && !method.Signature.IsStatic;
IMethodNode methodEntryPointNode = factory.MethodEntrypoint(method, getUnboxingStub);
Vertex methodPointer = nativeWriter.GetUnsignedConstant(_externalReferences.GetIndex(methodEntryPointNode));
// Get native layout vertices for the declaring type
ISymbolNode declaringTypeNode = factory.NecessaryTypeSymbol(method.OwningType);
Vertex declaringType = nativeWriter.GetUnsignedConstant(_externalReferences.GetIndex(declaringTypeNode));
// Get a vertex sequence for the method instantiation args if any
VertexSequence arguments = new VertexSequence();
foreach (var arg in method.Instantiation)
{
ISymbolNode argNode = factory.NecessaryTypeSymbol(arg);
arguments.Append(nativeWriter.GetUnsignedConstant(_externalReferences.GetIndex(argNode)));
}
// Get the name and sig of the method.
// Note: the method name and signature are stored in the NativeLayoutInfo blob, not in the hashtable we build here.
NativeLayoutMethodNameAndSignatureVertexNode nameAndSig = factory.NativeLayout.MethodNameAndSignatureVertex(method.GetTypicalMethodDefinition());
NativeLayoutPlacedSignatureVertexNode placedNameAndSig = factory.NativeLayout.PlacedSignatureVertex(nameAndSig);
Debug.Assert(placedNameAndSig.SavedVertex != null);
Vertex placedNameAndSigOffsetSig = nativeWriter.GetOffsetSignature(placedNameAndSig.SavedVertex);
// Get the vertex for the completed method signature
Vertex methodSignature = nativeWriter.GetTuple(declaringType, placedNameAndSigOffsetSig, arguments);
// Make the generic method entry vertex
Vertex entry = nativeWriter.GetTuple(methodSignature, methodPointer);
// Add to the hash table, hashed by the containing type's hashcode
uint hashCode = (uint)method.OwningType.GetHashCode();
hashtable.Append(hashCode, nativeSection.Place(entry));
}
byte[] streamBytes = nativeWriter.Save();
_endSymbol.SetSymbolOffset(streamBytes.Length);
return(new ObjectData(streamBytes, Array.Empty <Relocation>(), 1, new ISymbolDefinitionNode[] { this, _endSymbol }));
}
