[C#] 多執行緒快速讀寫同個檔案 強迫列隊

SyncWriteFile.cs

using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;

namespace Ruyut
{
    public class SyncWriteFile
    {
        private static readonly ManualResetEvent ManualResetEvent = new ManualResetEvent(true);

        private static readonly string FileName = "D:\\log.log";
        
        /**
         *  @s 輸入的文字
         *  @append 是否要"附加" {true:接續文字後面, false:覆蓋整份文件}
         */
        private static async Task Output(string s, bool append = true)
        {
            ManualResetEvent.WaitOne();

            using (StreamWriter streamWriter = new StreamWriter(FileName, append))
            {
                streamWriter.WriteLineAsync($"{DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss")} {s}" );
                streamWriter.Close();
            }

            ManualResetEvent.Set();
        }

    }
}