static public void Recycle(TypeSystemContext context)
{
// Only cache a reasonably small context that is still in Gen0
if (context.LoadFactor > 200 || GC.GetGeneration(context) > 0)
{
return;
}
// Flush the type system context from all types being recycled
context.FlushTypeBuilderStates();
// No lock needed here - the reference assignment is atomic
s_cachedContext.Target = context;
}
private unsafe static void RegularFuncEval(byte *parameterBuffer, uint parameterBufferSize)
{
TypesAndValues typesAndValues = new TypesAndValues();
uint trash;
uint parameterCount;
uint parameterValueSize;
uint eeTypeCount;
ulong eeType;
uint offset = 0;
NativeReader reader = new NativeReader(parameterBuffer, parameterBufferSize);
offset = reader.DecodeUnsigned(offset, out trash); // The VertexSequence always generate a length, I don't really need it.
offset = reader.DecodeUnsigned(offset, out parameterCount);
typesAndValues.parameterValues = new byte[parameterCount][];
for (int i = 0; i < parameterCount; i++)
{
offset = reader.DecodeUnsigned(offset, out parameterValueSize);
byte[] parameterValue = new byte[parameterValueSize];
for (int j = 0; j < parameterValueSize; j++)
{
uint parameterByte;
offset = reader.DecodeUnsigned(offset, out parameterByte);
parameterValue[j] = (byte)parameterByte;
}
typesAndValues.parameterValues[i] = parameterValue;
}
offset = reader.DecodeUnsigned(offset, out eeTypeCount);
ulong[] debuggerPreparedExternalReferences = new ulong[eeTypeCount];
for (int i = 0; i < eeTypeCount; i++)
{
offset = reader.DecodeUnsignedLong(offset, out eeType);
debuggerPreparedExternalReferences[i] = eeType;
}
TypeSystemContext typeSystemContext = TypeSystemContextFactory.Create();
bool hasThis;
TypeDesc[] parameters;
bool[] parametersWithGenericDependentLayout;
bool result = TypeLoaderEnvironment.Instance.GetCallingConverterDataFromMethodSignature_NativeLayout_Debugger(typeSystemContext, RuntimeSignature.CreateFromNativeLayoutSignatureForDebugger(offset), Instantiation.Empty, Instantiation.Empty, out hasThis, out parameters, out parametersWithGenericDependentLayout, reader, debuggerPreparedExternalReferences);
typesAndValues.types = new RuntimeTypeHandle[parameters.Length];
bool needToDynamicallyLoadTypes = false;
for (int i = 0; i < typesAndValues.types.Length; i++)
{
if (!parameters[i].RetrieveRuntimeTypeHandleIfPossible())
{
needToDynamicallyLoadTypes = true;
break;
}
typesAndValues.types[i] = parameters[i].GetRuntimeTypeHandle();
}
if (needToDynamicallyLoadTypes)
{
TypeLoaderEnvironment.Instance.RunUnderTypeLoaderLock(() =>
{
typeSystemContext.FlushTypeBuilderStates();
GenericDictionaryCell[] cells = new GenericDictionaryCell[parameters.Length];
for (int i = 0; i < cells.Length; i++)
{
cells[i] = GenericDictionaryCell.CreateTypeHandleCell(parameters[i]);
}
IntPtr[] eetypePointers;
TypeBuilder.ResolveMultipleCells(cells, out eetypePointers);
for (int i = 0; i < parameters.Length; i++)
{
typesAndValues.types[i] = ((EEType *)eetypePointers[i])->ToRuntimeTypeHandle();
}
});
}
TypeSystemContextFactory.Recycle(typeSystemContext);
LocalVariableType[] argumentTypes = new LocalVariableType[parameters.Length];
for (int i = 0; i < parameters.Length; i++)
{
// TODO, FuncEval, what these false really means? Need to make sure our format contains those information
argumentTypes[i] = new LocalVariableType(typesAndValues.types[i], false, false);
}
LocalVariableSet.SetupArbitraryLocalVariableSet <TypesAndValues>(HighLevelDebugFuncEvalHelperWithVariables, ref typesAndValues, argumentTypes);
}
private bool ResolveGenericVirtualMethodTarget(RuntimeTypeHandle targetTypeHandle, RuntimeTypeHandle declaringTypeHandle, RuntimeTypeHandle[] genericArguments, MethodNameAndSignature callingMethodNameAndSignature, out IntPtr methodPointer, out IntPtr dictionaryPointer)
{
if (IsPregeneratedOrTemplateRuntimeTypeHandle(targetTypeHandle))
{
// If the target type isn't dynamic, or at least is template type generated, the static lookup logic is what we want.
return(ResolveGenericVirtualMethodTarget_Static(targetTypeHandle, declaringTypeHandle, genericArguments, callingMethodNameAndSignature, out methodPointer, out dictionaryPointer));
}
else
{
#if SUPPORTS_NATIVE_METADATA_TYPE_LOADING
methodPointer = IntPtr.Zero;
dictionaryPointer = IntPtr.Zero;
TypeSystemContext context = TypeSystemContextFactory.Create();
DefType targetType = (DefType)context.ResolveRuntimeTypeHandle(targetTypeHandle);
// Method being called...
MethodDesc targetVirtualMethod = ResolveTypeHandleAndMethodNameAndSigToVirtualMethodDesc(context, declaringTypeHandle, callingMethodNameAndSignature);
if (targetVirtualMethod == null)
{
// If we can't find the method in the type system, it must only be present in the static environment. Search there instead.
TypeSystemContextFactory.Recycle(context);
return(ResolveGenericVirtualMethodTarget_Static(targetTypeHandle, declaringTypeHandle, genericArguments, callingMethodNameAndSignature, out methodPointer, out dictionaryPointer));
}
MethodDesc dispatchMethod = targetType.FindVirtualFunctionTargetMethodOnObjectType(targetVirtualMethod);
if (dispatchMethod == null)
{
return(false);
}
Instantiation targetMethodInstantiation = context.ResolveRuntimeTypeHandles(genericArguments);
MethodDesc instantiatedDispatchMethod = dispatchMethod.Context.ResolveGenericMethodInstantiation(dispatchMethod.OwningType.IsValueType /* get the unboxing stub */,
dispatchMethod.OwningType.GetClosestDefType(),
dispatchMethod.NameAndSignature,
targetMethodInstantiation, IntPtr.Zero, false);
GenericDictionaryCell cell = GenericDictionaryCell.CreateMethodCell(instantiatedDispatchMethod, false);
using (LockHolder.Hold(_typeLoaderLock))
{
// Now that we hold the lock, we may find that existing types can now find
// their associated RuntimeTypeHandle. Flush the type builder states as a way
// to force the reresolution of RuntimeTypeHandles which couldn't be found before.
context.FlushTypeBuilderStates();
TypeBuilder.ResolveSingleCell(cell, out methodPointer);
}
TypeSystemContextFactory.Recycle(context);
return(true);
#else
methodPointer = IntPtr.Zero;
dictionaryPointer = IntPtr.Zero;
Environment.FailFast("GVM Resolution for non template or pregenerated type");
return(false);
#endif
}
}
// This method computes the method pointer and dictionary pointer for a GVM.
// Inputs:
// - targetTypeHanlde: target type on which the GVM is implemented
// - nameAndSignature: name and signature of the GVM method
// - genericMethodArgumentHandles: GVM instantiation arguments
// Outputs:
// - methodPointer: pointer to the GVM's implementation
// - dictionaryPointer: (if applicable) pointer to the dictionary to be used with the GVM call
public bool TryGetGenericVirtualMethodPointer(RuntimeTypeHandle targetTypeHandle, MethodNameAndSignature nameAndSignature, RuntimeTypeHandle[] genericMethodArgumentHandles, out IntPtr methodPointer, out IntPtr dictionaryPointer)
{
methodPointer = dictionaryPointer = IntPtr.Zero;
TypeSystemContext context = TypeSystemContextFactory.Create();
DefType targetType = (DefType)context.ResolveRuntimeTypeHandle(targetTypeHandle);
Instantiation methodInstantiation = context.ResolveRuntimeTypeHandles(genericMethodArgumentHandles);
InstantiatedMethod method = (InstantiatedMethod)context.ResolveGenericMethodInstantiation(false, targetType, nameAndSignature, methodInstantiation, IntPtr.Zero, false);
if (!method.CanShareNormalGenericCode())
{
// First see if we can find an exact method implementation for the GVM (avoid using USG implementations if we can,
// because USG code is much slower).
if (TryLookupExactMethodPointerForComponents(targetTypeHandle, nameAndSignature, genericMethodArgumentHandles, out methodPointer))
{
Debug.Assert(methodPointer != IntPtr.Zero);
TypeSystemContextFactory.Recycle(context);
return(true);
}
}
// If we cannot find an exact method entry point, look for an equivalent template and compute the generic dictinoary
TemplateLocator templateLocator = new TemplateLocator();
NativeLayoutInfo nativeLayoutInfo = new NativeLayoutInfo();
InstantiatedMethod templateMethod = templateLocator.TryGetGenericMethodTemplate(method, out nativeLayoutInfo.Module, out nativeLayoutInfo.Token);
if (templateMethod == null)
{
return(false);
}
methodPointer = templateMethod.IsCanonicalMethod(CanonicalFormKind.Universal) ?
templateMethod.UsgFunctionPointer :
templateMethod.FunctionPointer;
if (!TryLookupGenericMethodDictionaryForComponents(targetTypeHandle, nameAndSignature, genericMethodArgumentHandles, out dictionaryPointer))
{
using (LockHolder.Hold(_typeLoaderLock))
{
// Now that we hold the lock, we may find that existing types can now find
// their associated RuntimeTypeHandle. Flush the type builder states as a way
// to force the reresolution of RuntimeTypeHandles which couldn't be found before.
context.FlushTypeBuilderStates();
if (!TypeBuilder.TryBuildGenericMethod(method, out dictionaryPointer))
{
return(false);
}
}
}
Debug.Assert(methodPointer != IntPtr.Zero && dictionaryPointer != IntPtr.Zero);
if (templateMethod.IsCanonicalMethod(CanonicalFormKind.Universal))
{
// Check if we need to wrap the method pointer into a calling convention converter thunk
if (!TypeLoaderEnvironment.Instance.MethodSignatureHasVarsNeedingCallingConventionConverter(context, nameAndSignature.Signature))
{
TypeSystemContextFactory.Recycle(context);
return(true);
}
RuntimeTypeHandle[] typeArgs = Array.Empty <RuntimeTypeHandle>();
if (RuntimeAugments.IsGenericType(targetTypeHandle))
{
RuntimeAugments.GetGenericInstantiation(targetTypeHandle, out typeArgs);
}
// Create a CallingConventionConverter to call the method correctly
IntPtr thunkPtr = CallConverterThunk.MakeThunk(
CallConverterThunk.ThunkKind.StandardToGenericInstantiating,
methodPointer,
nameAndSignature.Signature,
dictionaryPointer,
typeArgs,
genericMethodArgumentHandles);
Debug.Assert(thunkPtr != IntPtr.Zero);
methodPointer = thunkPtr;
// Set dictionaryPointer to null so we don't make a fat function pointer around the whole thing.
dictionaryPointer = IntPtr.Zero;
// TODO! add a new call converter thunk that will pass the instantiating arg through and use a fat function pointer.
// should allow us to make fewer thunks.
}
TypeSystemContextFactory.Recycle(context);
return(true);
}
private static void HighLevelDebugFuncEvalHelper()
{
uint parameterBufferSize = RuntimeAugments.RhpGetFuncEvalParameterBufferSize();
IntPtr writeParameterCommandPointer;
IntPtr debuggerBufferPointer;
unsafe
{
byte *debuggerBufferRawPointer = stackalloc byte[(int)parameterBufferSize];
debuggerBufferPointer = new IntPtr(debuggerBufferRawPointer);
WriteParameterCommand writeParameterCommand = new WriteParameterCommand
{
commandCode = 1,
bufferAddress = debuggerBufferPointer.ToInt64()
};
writeParameterCommandPointer = new IntPtr(&writeParameterCommand);
RuntimeAugments.RhpSendCustomEventToDebugger(writeParameterCommandPointer, Unsafe.SizeOf <WriteParameterCommand>());
// .. debugger magic ... the debuggerBuffer will be filled with parameter data
TypesAndValues typesAndValues = new TypesAndValues();
uint trash;
uint parameterCount;
uint parameterValue;
uint eeTypeCount;
ulong eeType;
uint offset = 0;
NativeReader reader = new NativeReader(debuggerBufferRawPointer, parameterBufferSize);
offset = reader.DecodeUnsigned(offset, out trash); // The VertexSequence always generate a length, I don't really need it.
offset = reader.DecodeUnsigned(offset, out parameterCount);
typesAndValues.parameterValues = new int[parameterCount];
for (int i = 0; i < parameterCount; i++)
{
offset = reader.DecodeUnsigned(offset, out parameterValue);
typesAndValues.parameterValues[i] = (int)parameterValue;
}
offset = reader.DecodeUnsigned(offset, out eeTypeCount);
for (int i = 0; i < eeTypeCount; i++)
{
// TODO: Stuff these eeType values into the external reference table
offset = reader.DecodeUnsignedLong(offset, out eeType);
}
TypeSystemContext typeSystemContext = TypeSystemContextFactory.Create();
bool hasThis;
TypeDesc[] parameters;
bool[] parametersWithGenericDependentLayout;
bool result = TypeLoaderEnvironment.Instance.GetCallingConverterDataFromMethodSignature_NativeLayout_Debugger(typeSystemContext, RuntimeSignature.CreateFromNativeLayoutSignatureForDebugger(offset), Instantiation.Empty, Instantiation.Empty, out hasThis, out parameters, out parametersWithGenericDependentLayout, reader);
typesAndValues.types = new RuntimeTypeHandle[parameters.Length];
bool needToDynamicallyLoadTypes = false;
for (int i = 0; i < typesAndValues.types.Length; i++)
{
if (!parameters[i].RetrieveRuntimeTypeHandleIfPossible())
{
needToDynamicallyLoadTypes = true;
break;
}
typesAndValues.types[i] = parameters[i].GetRuntimeTypeHandle();
}
if (needToDynamicallyLoadTypes)
{
TypeLoaderEnvironment.Instance.RunUnderTypeLoaderLock(() =>
{
typeSystemContext.FlushTypeBuilderStates();
GenericDictionaryCell[] cells = new GenericDictionaryCell[parameters.Length];
for (int i = 0; i < cells.Length; i++)
{
cells[i] = GenericDictionaryCell.CreateTypeHandleCell(parameters[i]);
}
IntPtr[] eetypePointers;
TypeBuilder.ResolveMultipleCells(cells, out eetypePointers);
for (int i = 0; i < parameters.Length; i++)
{
typesAndValues.types[i] = ((EEType *)eetypePointers[i])->ToRuntimeTypeHandle();
}
});
}
TypeSystemContextFactory.Recycle(typeSystemContext);
LocalVariableType[] argumentTypes = new LocalVariableType[parameters.Length];
for (int i = 0; i < parameters.Length; i++)
{
// TODO: What these false really means? Need to make sure our format contains those information
argumentTypes[i] = new LocalVariableType(typesAndValues.types[i], false, false);
}
LocalVariableSet.SetupArbitraryLocalVariableSet <TypesAndValues>(HighLevelDebugFuncEvalHelperWithVariables, ref typesAndValues, argumentTypes);
}
}
