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72 lines
1.8 KiB
C#
72 lines
1.8 KiB
C#
using System;
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using System.Threading;
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using Microsoft.Win32;
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namespace MediaBrowser.Server.Implementations.Threading
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{
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public class PeriodicTimer : IDisposable
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{
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public Action<object> Callback { get; set; }
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private Timer _timer;
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private readonly object _state;
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private readonly object _timerLock = new object();
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private readonly TimeSpan _period;
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public PeriodicTimer(Action<object> callback, object state, TimeSpan dueTime, TimeSpan period)
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{
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if (callback == null)
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{
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throw new ArgumentNullException("callback");
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}
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Callback = callback;
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_period = period;
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_state = state;
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StartTimer(dueTime);
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}
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void SystemEvents_PowerModeChanged(object sender, PowerModeChangedEventArgs e)
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{
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if (e.Mode == PowerModes.Resume)
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{
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DisposeTimer();
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StartTimer(Timeout.InfiniteTimeSpan);
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}
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}
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private void TimerCallback(object state)
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{
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Callback(state);
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}
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private void StartTimer(TimeSpan dueTime)
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{
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lock (_timerLock)
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{
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_timer = new Timer(TimerCallback, _state, dueTime, _period);
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SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
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}
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}
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private void DisposeTimer()
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{
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SystemEvents.PowerModeChanged -= SystemEvents_PowerModeChanged;
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lock (_timerLock)
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{
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if (_timer != null)
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{
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_timer.Dispose();
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_timer = null;
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}
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}
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}
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public void Dispose()
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{
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DisposeTimer();
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}
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}
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}
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