public unsafe RuntimeFieldHandle GetRuntimeFieldHandleForComponents(RuntimeTypeHandle declaringTypeHandle, IntPtr fieldName)
{
string fieldNameStr = GetStringFromMemoryInNativeFormat(fieldName);
RuntimeFieldHandleKey key = new RuntimeFieldHandleKey(declaringTypeHandle, fieldNameStr);
RuntimeFieldHandle runtimeFieldHandle = default(RuntimeFieldHandle);
lock (_runtimeFieldHandles)
{
if (!_runtimeFieldHandles.TryGetValue(key, out runtimeFieldHandle))
{
IntPtr runtimeFieldHandleValue = MemoryHelpers.AllocateMemory(sizeof(DynamicFieldHandleInfo));
if (runtimeFieldHandleValue == IntPtr.Zero)
{
throw new OutOfMemoryException();
}
DynamicFieldHandleInfo *fieldData = (DynamicFieldHandleInfo *)runtimeFieldHandleValue.ToPointer();
fieldData->DeclaringType = *(IntPtr *)&declaringTypeHandle;
fieldData->FieldName = fieldName;
// Special flag (lowest bit set) in the handle value to indicate it was dynamically allocated
runtimeFieldHandleValue = runtimeFieldHandleValue + 1;
runtimeFieldHandle = *(RuntimeFieldHandle *)&runtimeFieldHandleValue;
_runtimeFieldHandles.Add(key, runtimeFieldHandle);
}
return(runtimeFieldHandle);
}
}
public unsafe IntPtr TryGetRuntimeFieldHandleForComponents(RuntimeTypeHandle declaringTypeHandle, IntPtr fieldName)
{
IntPtr runtimeFieldHandleValue = MemoryHelpers.AllocateMemory(sizeof(DynamicFieldHandleInfo));
DynamicFieldHandleInfo *fieldData = (DynamicFieldHandleInfo *)runtimeFieldHandleValue.ToPointer();
fieldData->DeclaringType = *(IntPtr *)&declaringTypeHandle;
fieldData->FieldName = fieldName;
// Special flag (lowest bit set) in the handle value to indicate it was dynamically allocated
return(runtimeFieldHandleValue + 1);
}
public unsafe RuntimeFieldHandle GetRuntimeFieldHandleForComponents(RuntimeTypeHandle declaringTypeHandle, IntPtr fieldName)
{
IntPtr runtimeFieldHandleValue = MemoryHelpers.AllocateMemory(sizeof(DynamicFieldHandleInfo));
if (runtimeFieldHandleValue == IntPtr.Zero)
{
throw new OutOfMemoryException();
}
DynamicFieldHandleInfo *fieldData = (DynamicFieldHandleInfo *)runtimeFieldHandleValue.ToPointer();
fieldData->DeclaringType = *(IntPtr *)&declaringTypeHandle;
fieldData->FieldName = fieldName;
// Special flag (lowest bit set) in the handle value to indicate it was dynamically allocated
runtimeFieldHandleValue = runtimeFieldHandleValue + 1;
return(*(RuntimeFieldHandle *)&runtimeFieldHandleValue);
}
private unsafe bool TryGetDynamicRuntimeFieldHandleComponents(RuntimeFieldHandle runtimeFieldHandle, out RuntimeTypeHandle declaringTypeHandle, out string fieldName)
{
IntPtr runtimeFieldHandleValue = *(IntPtr *)&runtimeFieldHandle;
// Special flag in the handle value to indicate it was dynamically allocated
Debug.Assert((runtimeFieldHandleValue.ToInt64() & 0x1) == 0x1);
runtimeFieldHandleValue = runtimeFieldHandleValue - 1;
DynamicFieldHandleInfo *fieldData = (DynamicFieldHandleInfo *)runtimeFieldHandleValue.ToPointer();
declaringTypeHandle = *(RuntimeTypeHandle *)&(fieldData->DeclaringType);
// FieldName points to the field name in NativeLayout format, so we parse it using a NativeParser
IntPtr fieldNamePtr = fieldData->FieldName;
fieldName = GetStringFromMemoryInNativeFormat(fieldNamePtr);
return(true);
}
