新增 Mjpegplayer 用来播放 Web 流

SHH.MjpegPlayer/Core/Watchs/MemoryWatchdog.cs

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+using Ayay.SerilogLogs;
+using Serilog;
+using System.Diagnostics;
+using System.Timers;
+
+namespace SHH.MjpegPlayer;
+
+/// <summary>
+/// 内存监控
+/// </summary>
+public static class MemoryWatchdog
+{
+    private static readonly ILogger _sysLog = Log.ForContext("SourceContext", LogModules.Core);
+
+    private static System.Timers.Timer? _timer;
+    private static long _thresholdBytes;
+
+    private static ILogger _logger => Log.Logger;
+
+    /// <summary>
+    /// 启动内存监控
+    /// </summary>
+    /// <param name="intervalSeconds">检查间隔(秒)，默认60秒</param>
+    /// <param name="limitMB">内存阈值(MB)，超过此值自动退出，默认800MB</param>
+    public static void Start(int intervalSeconds = 60, int limitMB = 800)
+    {
+        // 1. 参数安全检查
+        if (intervalSeconds < 1) intervalSeconds = 1; // 至少 1 秒
+        if (limitMB < 100) limitMB = 100; // 至少100MB，防止误杀
+
+        // 2. 转换单位
+        // MB -> Bytes
+        _thresholdBytes = (long)limitMB * 1024 * 1024;
+
+        // 秒 -> 毫秒
+        double intervalMs = intervalSeconds * 1000.0;
+
+        // 3. 初始化定时器
+        Stop(); // 防止重复启动
+        _timer = new System.Timers.Timer(intervalMs);
+        _timer.Elapsed += CheckMemoryUsage;
+        _timer.AutoReset = true; // 循环执行
+        _timer.Start();
+
+        // 可选：记录启动日志
+        if (_logger != null)
+        {
+            _sysLog.Warning($"[系统] 内存看门狗已启动。每 {intervalSeconds} 秒检查一次，阈值: {limitMB} MB.");
+        }
+    }
+
+    private static void CheckMemoryUsage(object sender, ElapsedEventArgs e)
+    {
+        try
+        {
+            Process currentProc = Process.GetCurrentProcess();
+
+            // 【重要】刷新快照
+            currentProc.Refresh();
+
+            long currentUsage = currentProc.WorkingSet64;
+
+            if (currentUsage > _thresholdBytes)
+            {
+                double currentMB = currentUsage / 1024.0 / 1024.0;
+                double limitMB = _thresholdBytes / 1024.0 / 1024.0;
+
+                if (_logger != null)
+                {
+                    _sysLog.Warning($"[严重] 内存占用 ({currentMB:F2} MB) 超过阈值 ({limitMB} MB)，程序即将自杀重启或退出.");
+                }
+
+                // 等待日志输出
+                for (var i = 0; i < 10; i++)
+                {
+                    System.Threading.Thread.Sleep(100);
+                }
+
+                // 强制退出
+                Environment.Exit(0);
+            }
+        }
+        catch (Exception ex)
+        {
+            if (_logger != null)
+            {
+                _sysLog.Warning($"[严重] 内存检查出错.");
+            }
+        }
+    }
+
+    public static void Stop()
+    {
+        if (_timer != null)
+        {
+            _timer.Stop();
+            _timer.Dispose();
+            _timer = null;
+        }
+    }
+}