80 lines
2.6 KiB
C#
80 lines
2.6 KiB
C#
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#region CPL License
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/*
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Nuclex Framework
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Copyright (C) 2002-2009 Nuclex Development Labs
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This library is free software; you can redistribute it and/or
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modify it under the terms of the IBM Common Public License as
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published by the IBM Corporation; either version 1.0 of the
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License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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IBM Common Public License for more details.
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You should have received a copy of the IBM Common Public
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License along with this library
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Threading;
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using System.Diagnostics;
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using Nuclex.Support.Collections;
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namespace Nuclex.Support.Scheduling {
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/// <summary>Schedules actions for execution at a future point in time</summary>
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partial class Scheduler {
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#region class TimeSourceSingleton
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/// <summary>
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/// Manages the singleton instance of the scheduler's default time source
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/// </summary>
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private class TimeSourceSingleton {
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/// <summary>
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/// Explicit static constructor to guarantee the singleton is initialized only
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/// when a static member of this class is accessed.
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/// </summary>
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static TimeSourceSingleton() { } // Do not remove!
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/// <summary>The singleton instance of the default time source</summary>
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internal static readonly ITimeSource Instance = Scheduler.CreateDefaultTimeSource();
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}
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#endregion // class TimeSourceSingleton
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/// <summary>Returns the default time source for the scheduler</summary>
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public static ITimeSource DefaultTimeSource {
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get { return TimeSourceSingleton.Instance; }
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}
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/// <summary>Creates a new default time source for the scheduler</summary>
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/// <param name="useWindowsTimeSource">
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/// Whether the specialized windows time source should be used
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/// </param>
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/// <returns>The newly created time source</returns>
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internal static ITimeSource CreateTimeSource(bool useWindowsTimeSource) {
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if(useWindowsTimeSource) {
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return new WindowsTimeSource();
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} else {
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return new GenericTimeSource();
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}
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}
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/// <summary>Creates a new default time source for the scheduler</summary>
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/// <returns>The newly created time source</returns>
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internal static ITimeSource CreateDefaultTimeSource() {
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return CreateTimeSource(WindowsTimeSource.Available);
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}
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}
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} // namespace Nuclex.Support.Scheduling
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