移除DeviceManager.cs中不必要的锁操作以优化性能
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zqm
@@ -266,6 +266,42 @@ namespace JoyD.Windows.CS.Toprie
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private Thread _temperatureReceiveThread;
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private bool _isReceivingTemperatureData = false;
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private bool _isTemperatureReceivingPaused = false; // 暂停标志，用于控制是否处理接收到的温度数据
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/// <summary>
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/// 准确检测TcpClient连接状态
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/// 不仅检查Connected属性，还通过Poll方法检测连接是否真正有效
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/// </summary>
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/// <param name="client">要检查的TcpClient实例</param>
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/// <returns>如果连接有效返回true，否则返回false</returns>
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private bool IsTcpClientConnected(TcpClient client)
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{
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if (client == null || !client.Connected)
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return false;
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// 检查连接状态的标准方法
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// 100毫秒超时，不读取数据只检测状态
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try
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{
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// Poll方法：检查连接状态，100ms超时
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// SelectMode.SelectRead：检查是否可读
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bool isConnected = !client.Client.Poll(100, System.Net.Sockets.SelectMode.SelectRead) ||
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client.Client.Available > 0;
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// 如果连接已断开，Client.RemoteEndPoint会抛出异常
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if (isConnected)
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{
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// 尝试访问RemoteEndPoint验证连接
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var dummy = client.Client.RemoteEndPoint;
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}
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return isConnected;
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}
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catch
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{
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// 任何异常都表示连接可能已断开
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return false;
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}
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}
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private ManualResetEvent _stopTemperatureEvent;
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private const int TEMPERATURE_TCP_PORT = 8081; // 温度数据TCP端口 - 修正为热像仪SDK文档中指定的端口
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@@ -1125,12 +1161,11 @@ namespace JoyD.Windows.CS.Toprie
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// 使用局部变量存储资源
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TcpClient localTcpClient = null;
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NetworkStream localStream = null;
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List<byte> temperatureDataAccumulator = new List<byte>();
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List<byte[]> temperatureDataAccumulator = new List<byte[]>();
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byte[] buffer = new byte[65536]; // 缓冲区大小
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// 定义常量
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const int RECEIVE_TIMEOUT = 30000; // 增加到30秒，减少因超时导致的断开
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const int HEARTBEAT_INTERVAL = 15000; // 心跳间隔15秒
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const int MEDIUM_SLEEP_MS = 50;
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const int LONG_SLEEP_MS = 2000; // 增加重连等待时间
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const int ERROR_SLEEP_MS = 1000; // 增加异常恢复等待时间
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@@ -1165,8 +1200,8 @@ namespace JoyD.Windows.CS.Toprie
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temperaturePort = TEMPERATURE_TCP_PORT;
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}
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// 连接管理：仅当连接不存在或已断开时才创建新连接
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if (localTcpClient == null || !localTcpClient.Connected || localStream == null)
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// 连接管理：当连接不存在、已断开或检测到连接不可用时创建新连接
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if (localTcpClient == null || !IsTcpClientConnected(localTcpClient) || localStream == null)
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{
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// 清理之前可能存在的连接资源
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try
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@@ -1200,6 +1235,8 @@ namespace JoyD.Windows.CS.Toprie
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ReceiveTimeout = RECEIVE_TIMEOUT,
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SendTimeout = RECEIVE_TIMEOUT
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};
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// 设置接收缓冲区大小
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localTcpClient.ReceiveBufferSize = 65536; // 64KB
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Log($"正在连接到温度数据端口 {temperaturePort}...");
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localTcpClient.Connect(deviceIp, temperaturePort);
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@@ -1273,27 +1310,117 @@ namespace JoyD.Windows.CS.Toprie
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{
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Log("温度接收已暂停，等待恢复");
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Thread.Sleep(MEDIUM_SLEEP_MS);
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// 在暂停状态下，仍然需要定期检查连接是否有效
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if (localTcpClient != null && !IsTcpClientConnected(localTcpClient))
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{
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Log("暂停状态下检测到连接已断开，将在恢复时重建连接");
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try
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{
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if (localStream != null)
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{
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localStream.Close();
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localStream = null;
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}
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if (localTcpClient != null)
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{
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localTcpClient.Close();
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localTcpClient = null;
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}
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}
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catch (Exception ex)
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{
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Log($"关闭无效连接时发生异常: {ex.Message}");
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}
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}
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continue;
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}
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// 发送心跳保持连接
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if ((DateTime.Now - lastHeartbeatTime).TotalMilliseconds > HEARTBEAT_INTERVAL)
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else
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{
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// 从暂停状态恢复时，确保连接仍然有效，必要时重新启动数据传输
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if (localTcpClient != null && !IsTcpClientConnected(localTcpClient))
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{
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Log("恢复接收时检测到连接无效，需要重建连接");
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try
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{
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if (localStream != null)
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{
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localStream.Close();
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localStream = null;
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}
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if (localTcpClient != null)
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{
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localTcpClient.Close();
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localTcpClient = null;
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}
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}
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catch (Exception ex)
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{
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Log($"关闭无效连接时发生异常: {ex.Message}");
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}
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// 跳出内层循环，回到外层循环重新建立连接
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break;
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}
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// 如果连接有效但数据传输可能已停止，尝试重新发送开始命令
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// 这是为了解决暂停后恢复时DataAvailable始终为false的问题
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try
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{
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byte[] heartbeatCommand = Encoding.ASCII.GetBytes("heartbeat\r\n");
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localStream.Write(heartbeatCommand, 0, heartbeatCommand.Length);
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// 发送开始温度数据传输的命令
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byte[] startCommand = Encoding.ASCII.GetBytes("start_temp_transfer\r\n");
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localStream.Write(startCommand, 0, startCommand.Length);
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localStream.Flush();
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lastHeartbeatTime = DateTime.Now;
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// 心跳不记录日志以减少日志量
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Log("从暂停状态恢复，重新发送开始温度数据传输命令");
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}
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catch (Exception ex)
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{
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Log($"发送心跳失败: {ex.Message}");
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Log($"重新发送开始命令失败: {ex.Message}");
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// 发送失败，可能连接已断开，需要重建连接
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try
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{
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if (localStream != null)
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{
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localStream.Close();
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localStream = null;
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}
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if (localTcpClient != null)
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{
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localTcpClient.Close();
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localTcpClient = null;
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}
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}
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catch (Exception closeEx)
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{
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Log($"关闭失败连接时发生异常: {closeEx.Message}");
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}
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// 跳出内层循环，回到外层循环重新建立连接
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break;
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}
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}
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// 使用非阻塞方式检查是否有数据可读
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// 先检查连接是否仍然有效
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if (localTcpClient != null && !IsTcpClientConnected(localTcpClient))
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{
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Log("检测到连接已断开，准备重建连接");
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try
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{
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if (localStream != null)
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{
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localStream.Close();
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localStream = null;
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}
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if (localTcpClient != null)
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{
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localTcpClient.Close();
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localTcpClient = null;
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}
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}
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catch (Exception ex)
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{
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Log($"关闭断开的连接时发生异常: {ex.Message}");
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}
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continue;
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}
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if (localStream.DataAvailable)
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{
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// 有数据可读时进行阻塞读取
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@@ -1301,9 +1428,7 @@ namespace JoyD.Windows.CS.Toprie
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if (bytesRead > 0)
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{
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lastReceiveTime = DateTime.Now; // 更新最后接收数据时间
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byte[] receivedBytes = new byte[bytesRead];
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Array.Copy(buffer, receivedBytes, bytesRead);
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Log($"接收到温度数据字节数: {bytesRead}");
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Log($"==========================================接收到温度数据字节数: {bytesRead}");
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// 根据暂停状态决定是否处理数据
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if (isPaused)
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@@ -1312,38 +1437,45 @@ namespace JoyD.Windows.CS.Toprie
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}
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else
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{
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byte[] receivedBytes = new byte[bytesRead];
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Array.Copy(buffer, receivedBytes, bytesRead);
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// 同步接收并处理数据
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lock (temperatureDataAccumulator)
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{
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temperatureDataAccumulator.AddRange(receivedBytes);
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ProcessReceivedTemperatureData(temperatureDataAccumulator);
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}
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temperatureDataAccumulator.Add(receivedBytes);
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ProcessReceivedTemperatureData(temperatureDataAccumulator);
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}
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}
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else if (bytesRead == 0)
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{
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// 连接已关闭
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Log("远程主机关闭了连接");
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// 重置状态标志，下一次循环会创建新连接
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lock (_lockObject)
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{
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// 连接已关闭
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Log("远程主机关闭了连接");
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_isReceivingTemperatureData = false;
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}
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// 重置状态标志，下一次循环会创建新连接
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lock (_lockObject)
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{
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_isReceivingTemperatureData = false;
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}
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// 清理连接资源
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try
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// 清理连接资源
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try
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{
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if (localStream != null)
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{
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localStream.Close();
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localTcpClient.Close();
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localStream = null;
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}
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if (localTcpClient != null)
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{
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localTcpClient.Close();
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localTcpClient = null;
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}
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catch {}
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localStream = null;
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localTcpClient = null;
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continue;
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}
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catch { }
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localStream = null;
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localTcpClient = null;
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continue;
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}
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}
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}
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// while循环退出后的处理
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}
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@@ -1422,9 +1554,9 @@ namespace JoyD.Windows.CS.Toprie
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/// 处理接收到的温度数据
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/// </summary>
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/// <param name="dataAccumulator">累积的温度数据</param>
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private void ProcessReceivedTemperatureData(List<byte> dataAccumulator)
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private void ProcessReceivedTemperatureData(List<byte[]> dataAccumulator)
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{
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// 根据TemperatureData类的要求，每个温度帧包含9字节头部 + 温度数据
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//根据TemperatureData类的要求，每个温度帧包含9字节头部 + 温度数据
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// 根据注释，设备实际提供的数据分辨率应为256x192，最终映射到512x384显示
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const int HEADER_SIZE = 9; // 9字节头部("+TEMP"+数据长度)
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const int WIDTH = 256;
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