protected virtual object DynamicInvokeImpl(object[] args)
{
if (IsDynamicDelegate())
{
// DynamicDelegate case
object result = ((Func <object[], object>)m_helperObject)(args);
DebugAnnotations.PreviousCallContainsDebuggerStepInCode();
return(result);
}
else
{
IntPtr invokeThunk = this.GetThunk(DelegateInvokeThunk);
#if PROJECTN
object result = InvokeUtils.CallDynamicInvokeMethod(this.m_firstParameter, this.m_functionPointer, this, invokeThunk, IntPtr.Zero, this, args, binderBundle: null, wrapInTargetInvocationException: true);
#else
IntPtr genericDictionary = IntPtr.Zero;
if (FunctionPointerOps.IsGenericMethodPointer(invokeThunk))
{
unsafe
{
GenericMethodDescriptor *descriptor = FunctionPointerOps.ConvertToGenericDescriptor(invokeThunk);
genericDictionary = descriptor->InstantiationArgument;
invokeThunk = descriptor->MethodFunctionPointer;
}
}
object result = InvokeUtils.CallDynamicInvokeMethod(this.m_firstParameter, this.m_functionPointer, null, invokeThunk, genericDictionary, this, args, binderBundle: null, wrapInTargetInvocationException: true, invokeMethodHelperIsThisCall: false);
#endif
DebugAnnotations.PreviousCallContainsDebuggerStepInCode();
return(result);
}
}
public static IntPtr ConvertUnboxingFunctionPointerToUnderlyingNonUnboxingPointer(IntPtr unboxingFunctionPointer, RuntimeTypeHandle declaringType)
{
if (FunctionPointerOps.IsGenericMethodPointer(unboxingFunctionPointer))
{
// Handle shared generic methods
unsafe
{
GenericMethodDescriptor *functionPointerDescriptor = FunctionPointerOps.ConvertToGenericDescriptor(unboxingFunctionPointer);
IntPtr nonUnboxingTarget = RuntimeAugments.GetCodeTarget(functionPointerDescriptor->MethodFunctionPointer);
Debug.Assert(nonUnboxingTarget != functionPointerDescriptor->MethodFunctionPointer);
Debug.Assert(nonUnboxingTarget == RuntimeAugments.GetCodeTarget(nonUnboxingTarget));
return(FunctionPointerOps.GetGenericMethodFunctionPointer(nonUnboxingTarget, functionPointerDescriptor->InstantiationArgument));
}
}
// GetCodeTarget will look through simple unboxing stubs (ones that consist of adjusting the this pointer and then
// jumping to the target.
IntPtr exactTarget = RuntimeAugments.GetCodeTarget(unboxingFunctionPointer);
if (RuntimeAugments.IsGenericType(declaringType))
{
IntPtr fatFunctionPointerTarget;
// This check looks for unboxing and instantiating stubs generated via the compiler backend
if (TypeLoaderEnvironment.TryGetTargetOfUnboxingAndInstantiatingStub(exactTarget, out fatFunctionPointerTarget))
{
// If this is an unboxing and instantiating stub, use separate table, find target, and create fat function pointer
exactTarget = FunctionPointerOps.GetGenericMethodFunctionPointer(fatFunctionPointerTarget,
declaringType.ToIntPtr());
}
#if FEATURE_UNIVERSAL_GENERICS
else
{
IntPtr newExactTarget;
// This check looks for unboxing and instantiating stubs generated dynamically as thunks in the calling convention converter
if (CallConverterThunk.TryGetNonUnboxingFunctionPointerFromUnboxingAndInstantiatingStub(exactTarget,
declaringType, out newExactTarget))
{
// CallingConventionConverter determined non-unboxing stub
exactTarget = newExactTarget;
}
else
{
// Target method was a method on a generic, but it wasn't a shared generic, and thus none of the above
// complex unboxing stub digging logic was necessary. Do nothing, and use exactTarget as discovered
// from GetCodeTarget
}
}
#endif
}
return(exactTarget);
}
private bool UpdateCalleeFunctionPointer(IntPtr newFunctionPointer)
{
if (FunctionPointerOps.IsGenericMethodPointer(newFunctionPointer))
{
GenericMethodDescriptor *genericTarget = FunctionPointerOps.ConvertToGenericDescriptor(newFunctionPointer);
_instantiatingStubArgument = genericTarget->InstantiationArgument;
_functionPointerToCall = genericTarget->MethodFunctionPointer;
return(true);
}
else
{
_functionPointerToCall = newFunctionPointer;
return(false);
}
}
private unsafe static IntPtr ResolveCallOnReferenceTypeCacheMiss(IntPtr context, IntPtr callDescIntPtr, object contextObject, out IntPtr auxResult)
{
auxResult = IntPtr.Zero;
// Perform a normal GVM dispatch, then change the function pointer to dereference the this pointer.
GenericConstrainedCallDesc *callDesc = (GenericConstrainedCallDesc *)callDescIntPtr;
IntPtr target = RuntimeAugments.GVMLookupForSlot(contextObject.GetType().TypeHandle, callDesc->_constrainedMethod);
if (FunctionPointerOps.IsGenericMethodPointer(target))
{
GenericMethodDescriptor *genMethodDesc = FunctionPointerOps.ConvertToGenericDescriptor(target);
IntPtr actualCodeTarget = GetThunkThatDereferencesThisPointerAndTailCallsTarget(genMethodDesc->MethodFunctionPointer);
return(FunctionPointerOps.GetGenericMethodFunctionPointer(actualCodeTarget, genMethodDesc->InstantiationArgument));
}
else
{
return(GetThunkThatDereferencesThisPointerAndTailCallsTarget(target));
}
}
private unsafe static IntPtr ResolveCallOnValueType(IntPtr unused, IntPtr callDescIntPtr)
#endif
{
GenericConstrainedCallDesc *callDesc = (GenericConstrainedCallDesc *)callDescIntPtr;
IntPtr targetAsVirtualCall = RuntimeAugments.GVMLookupForSlot(callDesc->_constraintType, callDesc->_constrainedMethod);
IntPtr exactTarget = IntPtr.Zero;
if (FunctionPointerOps.IsGenericMethodPointer(targetAsVirtualCall))
{
GenericMethodDescriptor *genMethodDesc = FunctionPointerOps.ConvertToGenericDescriptor(targetAsVirtualCall);
IntPtr actualCodeTarget = RuntimeAugments.GetCodeTarget(genMethodDesc->MethodFunctionPointer);
exactTarget = FunctionPointerOps.GetGenericMethodFunctionPointer(actualCodeTarget, genMethodDesc->InstantiationArgument);
}
else
{
IntPtr actualCodeTarget = RuntimeAugments.GetCodeTarget(targetAsVirtualCall);
IntPtr callConverterThunk;
if (CallConverterThunk.TryGetNonUnboxingFunctionPointerFromUnboxingAndInstantiatingStub(actualCodeTarget, callDesc->_constraintType, out callConverterThunk))
{
actualCodeTarget = callConverterThunk;
}
exactTarget = actualCodeTarget;
}
// Ensure that all threads will have their function pointers completely published before updating callDesc.
// as the ExactTarget is read from callDesc by binder generated code without a barrier, we need a barrier here
// to ensure that the new function pointer data is valid on all threads
Interlocked.MemoryBarrier();
// Its possible for multiple threads to race to set exact target. Check to see we always set the same value
if (callDesc->_exactTarget != IntPtr.Zero)
{
Debug.Assert(callDesc->_exactTarget == exactTarget);
}
callDesc->_exactTarget = exactTarget;
return(exactTarget);
}
private string GetTargetMethodsDescriptionForDebugger()
{
if (m_functionPointer == GetThunk(MulticastThunk))
{
// Multi-cast delegates return the Target of the last delegate in the list
Delegate[] invocationList = (Delegate[])m_helperObject;
int invocationCount = (int)m_extraFunctionPointerOrData;
StringBuilder builder = new StringBuilder();
for (int c = 0; c < invocationCount; c++)
{
if (c != 0)
{
builder.Append(", ");
}
builder.Append(invocationList[c].GetTargetMethodsDescriptionForDebugger());
}
return(builder.ToString());
}
else
{
RuntimeTypeHandle typeOfFirstParameterIfInstanceDelegate;
bool isOpenThunk;
IntPtr functionPointer = GetFunctionPointer(out typeOfFirstParameterIfInstanceDelegate, out isOpenThunk);
if (!FunctionPointerOps.IsGenericMethodPointer(functionPointer))
{
return(DebuggerFunctionPointerFormattingHook(functionPointer, typeOfFirstParameterIfInstanceDelegate));
}
else
{
unsafe
{
GenericMethodDescriptor *pointerDef = FunctionPointerOps.ConvertToGenericDescriptor(functionPointer);
return(DebuggerFunctionPointerFormattingHook(pointerDef->InstantiationArgument, typeOfFirstParameterIfInstanceDelegate));
}
}
}
}