/// <summary>
/// Initializes a new instance of the <see cref="UvAsync"/> handle.
/// </summary>
/// <param name="loop">Loop, on which this handle will be initialized.</param>
/// <param name="callback">A callback, which will be executed after a loop will receive an async signal from this handle.</param>
/// <param name="state">A state object to be stored in the handle for later use inside the callback.</param>
public UvAsync(UvLoop loop, Action <UvAsync> callback, object state = null)
: base(loop, UvHandleType.Async)
{
if (callback == null)
{
throw new ArgumentNullException(nameof(callback));
}
this._Callback = callback;
this._State = state;
Libuv.EnsureSuccess(Libuv.uv_async_init(loop, this, _UvAsyncCallback));
this.NeedsToBeClosed = true;
}