public LiveModel(Configuration config, FactoryContext factoryContext) : base(BindConstructorArguments(config, factoryContext), new Delete <LiveModel>(NativeMethods.DeleteLiveModel))
{
this.managedErrorCallback = new NativeMethods.managed_background_error_callback_t(this.WrapStatusAndRaiseBackgroundError);
// DangerousGetHandle here is trivially safe, because .Dispose() cannot be called before the object is
// constructed.
NativeMethods.LiveModelSetCallback(this.DangerousGetHandle(), this.managedErrorCallback);
this.managedTraceCallback = new NativeMethods.managed_trace_callback_t(this.SendTrace);
}
private static New <LiveModel> BindConstructorArguments(Configuration config, FactoryContext factoryContext)
{
return(new New <LiveModel>(() =>
{
factoryContext = factoryContext ?? new FactoryContext();
IntPtr result = NativeMethods.CreateLiveModel(config.DangerousGetHandle(), factoryContext.DangerousGetHandle());
// These references do not live on the heap in this delegate, and could disappear during the invocation
// of CreateLiveModel. Thus, we need to ensure GC knows not to release them until after that call
// returns.
GC.KeepAlive(config);
GC.KeepAlive(factoryContext);
return result;
}));
}