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using System;
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using System.Threading;
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namespace ZeroLevel.Services.Shedulling
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{
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/// <summary>
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/// A wrapper around an Action that stores the time at which an action should be performed, as well as a link to the next action.
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/// </summary>
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internal sealed class ExpiredObject
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{
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private static long _counter = 0;
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internal static void ResetIndex(long index)
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=> _counter = index;
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public ExpiredObject()
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{
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Key = Interlocked.Increment(ref _counter);
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if (Key == -1)
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Key = Interlocked.Increment(ref _counter);
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}
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public ExpiredObject(bool has_no_key)
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{
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if (has_no_key)
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Key = -1;
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else
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Key = Interlocked.Increment(ref _counter);
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}
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public ExpiredObject Reset(DateTime nextDate)
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{
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ExpirationDate = nextDate;
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Next = null!;
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return this;
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}
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/// <summary>
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/// Action at the end of the wait
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/// </summary>
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public Action<long> Callback;
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/// <summary>
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///Expiration Timeout
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/// </summary>
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public DateTime ExpirationDate;
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/// <summary>
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/// Next object with the nearest waiting date
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/// </summary>
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public ExpiredObject Next;
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/// <summary>
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/// Key to identify the pending event
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/// </summary>
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public long Key { get; }
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}
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}
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