1 // OpenTween - Client of Twitter
2 // Copyright (c) 2019 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
3 // All rights reserved.
5 // This file is part of OpenTween.
7 // This program is free software; you can redistribute it and/or modify it
8 // under the terms of the GNU General Public License as published by the Free
9 // Software Foundation; either version 3 of the License, or (at your option)
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 // You should have received a copy of the GNU General Public License along
18 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
19 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 // Boston, MA 02110-1301, USA.
25 using System.Threading;
26 using System.Threading.Tasks;
30 public sealed class AsyncTimer : ITimer
32 public TimeSpan DueTime { get; private set; } = Timeout.InfiniteTimeSpan;
34 public TimeSpan Period { get; private set; } = Timeout.InfiniteTimeSpan;
36 private readonly Func<Task> callback;
37 private readonly Timer timer;
39 public static event EventHandler<ThreadExceptionEventArgs>? UnhandledException;
41 public AsyncTimer(Func<Task> callback)
43 this.callback = callback;
44 this.timer = new Timer(this.TimerCallback);
47 private async void TimerCallback(object state)
51 await this.callback().ConfigureAwait(false);
55 UnhandledException?.Invoke(this, new ThreadExceptionEventArgs(ex));
59 public void Change(TimeSpan dueTime, TimeSpan period)
61 this.DueTime = dueTime;
63 this.timer.Change(dueTime, period);
67 => this.timer.Dispose();
70 public interface ITimer : IDisposable
72 void Change(TimeSpan dueTime, TimeSpan period);