Bootstrap.cs

public static class Bootstrap {
    #region Fields
    private static AppDomain _domain;
    private static readonly object _domainLock = new object();
    #endregion

    #region Exports
    [DllExport("Initialize", CallingConvention.Winapi)]
    public static void Export_Initialize() => Initialize();

    [DllExport("Shutdown", CallingConvention.Winapi)]
    public static void Export_Shutdown() => Shutdown();
    #endregion

    public static void Initialize() {
        lock(_domainLock) {
            if (_domain != null)
                Shutdown();

            var currentAssembly = Assembly.GetExecutingAssembly();
            var currentPath = Path.GetDirectoryName(currentAssembly.Location);

            var appDomainSetup = new AppDomainSetup {
                ApplicationBase = currentPath,
                ShadowCopyFiles = "true"
            };

            _domain = AppDomain.CreateDomain("Aria.Internal", null, appDomainSetup);
            _domain.DoCallBack(InternalInitialize);
        }
    }

    public static void Shutdown() {
        lock(_domainLock) {
            if (_domain == null)
                return;

            _domain.DoCallBack(InternalShutdown);
            AppDomain.Unload(_domain);

            _domain = null;
        }
    }

    private static void InternalInitialize() {
        if (Engine.Initialized)
            return;

        Window.Initialize();
        Context.Dispatch(Engine.Initialize);
    }

    private static void InternalShutdown() {
        if (!Engine.Initialized)
            return;

        Context.Dispatch(Engine.Shutdown);
    }
}