public Callbacks(Instance instance, ICallbacks callbacks)
{
_instance = instance;
CallbacksImpl = callbacks;
_handle = GCHandle.Alloc(this);
_functions = new FMI2.fmi2CallbackFunctions {
logger = LoggerCallback,
allocateMemory = Marshalling.AllocateMemory,
freeMemory = Marshalling.FreeMemory,
stepFinished = StepFinishedCallback,
componentEnvironment = GCHandle.ToIntPtr(_handle)
};
Structure = Marshalling.AllocateMemory(1, (ulong)Marshal.SizeOf(_functions));
Marshal.StructureToPtr(_functions, Structure, false);
}