121 lines
3.1 KiB
C#
121 lines
3.1 KiB
C#
#region copyright
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//------------------------------------------------------------------------------
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// 此代码版权声明为全文件覆盖，如有原作者特别声明，会在下方手动补充
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// 此代码版权（除特别声明外的代码）归作者本人Diego所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议
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// Gitee源代码仓库：https://gitee.com/diego2098/ThingsGateway
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// Github源代码仓库：https://github.com/kimdiego2098/ThingsGateway
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// 使用文档：https://diego2098.gitee.io/thingsgateway-docs/
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// QQ群：605534569
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//------------------------------------------------------------------------------
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#endregion
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namespace ThingsGateway.Foundation.Core;
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/// <summary>
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/// 自增
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/// </summary>
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public sealed class EasyIncrementCount
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{
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private long current = 0;
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private readonly EasyLock easyLock;
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private long max = long.MaxValue;
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private long start = 0;
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/// <inheritdoc cref="EasyIncrementCount"/>
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public EasyIncrementCount(long max, long start = 0, int tick = 1)
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{
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this.start = start;
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this.max = max;
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current = start;
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IncreaseTick = tick;
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easyLock = new EasyLock();
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}
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/// <summary>
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/// Tick
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/// </summary>
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public int IncreaseTick { get; set; } = 1;
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/// <summary>
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/// 获取当前的计数器的最大的设置值
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/// </summary>
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public long MaxValue => max;
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/// <summary>
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/// 获取自增信息，获得数据之后，下一次获取将会自增，如果自增后大于最大值，则会重置为最小值，如果小于最小值，则会重置为最大值。
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/// </summary>
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public long GetCurrentValue()
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{
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easyLock.Wait();
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long current = this.current;
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this.current += IncreaseTick;
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if (this.current > max)
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{
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this.current = start;
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}
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else if (this.current < start)
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{
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this.current = max;
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}
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easyLock.Release();
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return current;
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}
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/// <summary>
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/// 将当前的值重置为初始值。
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/// </summary>
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public void ResetCurrentValue()
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{
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easyLock.Wait();
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current = start;
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easyLock.Release();
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}
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/// <summary>
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/// 将当前的值重置为指定值
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/// </summary>
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public void ResetCurrentValue(long value)
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{
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easyLock.Wait();
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current = value <= max ? value >= start ? value : start : max;
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easyLock.Release();
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}
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/// <summary>
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/// 重置当前序号的最大值
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/// </summary>
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public void ResetMaxValue(long max)
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{
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easyLock.Wait();
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if (max > start)
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{
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if (max < current)
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{
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current = start;
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}
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this.max = max;
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}
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easyLock.Release();
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}
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/// <summary>
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/// 重置当前序号的初始值
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/// </summary>
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public void ResetStartValue(long start)
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{
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easyLock.Wait();
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if (start < max)
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{
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if (current < start)
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{
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current = start;
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}
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this.start = start;
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}
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easyLock.Release();
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}
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} |