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访问两个线程内的串行连接状态

发布于 2024-09-16 09:53:37 字数 147 浏览 7 评论 0原文

我正在尝试设置另一个线程来当前检查所引用对象的状态。

主线程是运行程序并处理串行连接状态的线程。

第二个线程需要访问连接状态以继续从缓冲区发送和接收命令。

这可以吗？

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甲如呢乙后呢 2024-09-23 09:53:37

当然。控制串行设备的线程需要提供一个线程安全的只读属性，该属性会记住它读取的最后一个状态。另一个线程可以随时读取该属性。

这是一个简单的解决方案：

string lastReadState = "";
object StateLock = new Object();
string State { get { lock(StateLock) { return lastReadState; } } }

// Main thread working away...
lock (StateLock) { lastReadState = ReadCurrentState(); }

// Other thread working away...
string state = State;

编辑（看到评论后）

SomeStateClass lastReadState = new StateClass();
object StateLock = new Object();
SomeStateClass State { get { lock(StateLock) { return lastReadState; } } }

// Main thread figures out the new state information at some point...
lock (StateLock) { lastReadState = new StateClass { Prop1 = whatever, ... }; }

// Other thread uses the state
var relevantInfo = State.Prop1;

Sure. The thread controlling the serial device needs to provide a thread-safe read-only property which remembers the last state that it read. The other thread can than read that propery whenever it would like.

Here's a simple solution:

string lastReadState = "";
object StateLock = new Object();
string State { get { lock(StateLock) { return lastReadState; } } }

// Main thread working away...
lock (StateLock) { lastReadState = ReadCurrentState(); }

// Other thread working away...
string state = State;

Edit (after seeing the comments)

SomeStateClass lastReadState = new StateClass();
object StateLock = new Object();
SomeStateClass State { get { lock(StateLock) { return lastReadState; } } }

// Main thread figures out the new state information at some point...
lock (StateLock) { lastReadState = new StateClass { Prop1 = whatever, ... }; }

// Other thread uses the state
var relevantInfo = State.Prop1;

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