2021-03-29 23:35:02 +08:00
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/*
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* 版权属于：yitter(yitter@126.com)
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* 开源地址：https://gitee.com/yitter/idgenerator
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* 版权协议：MIT
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* 版权说明：只要保留本版权，你可以免费使用、修改、分发本代码。
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* 免责条款：任何因为本代码产生的系统、法律、政治、宗教问题，均与版权所有者无关。
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*
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*/
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using System;
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2021-03-13 16:21:56 +08:00
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using System.Collections.Generic;
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using System.Text;
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namespace Yitter.IdGenerator
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{
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/// <summary>
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/// 常规雪花算法
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/// </summary>
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internal class SnowWorkerM2 : SnowWorkerM1
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{
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public SnowWorkerM2(IdGeneratorOptions options) : base(options)
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{
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}
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public override long NextId()
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{
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lock (_SyncLock)
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{
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long currentTimeTick = GetCurrentTimeTick();
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if (_LastTimeTick == currentTimeTick)
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{
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if (_CurrentSeqNumber++ > MaxSeqNumber)
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{
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_CurrentSeqNumber = MinSeqNumber;
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currentTimeTick = GetNextTimeTick();
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}
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}
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else
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{
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_CurrentSeqNumber = MinSeqNumber;
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}
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if (currentTimeTick < _LastTimeTick)
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{
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throw new Exception(string.Format("Time error for {0} milliseconds", _LastTimeTick - currentTimeTick));
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}
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_LastTimeTick = currentTimeTick;
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var result = ((currentTimeTick << _TimestampShift) + ((long)WorkerId << SeqBitLength) + (uint)_CurrentSeqNumber);
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return result;
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}
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}
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}
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}
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