问题描述

在我的应用程序中，我使用 .NET SerialPort 类来读取和写入数据.读取是使用 DataReceived 事件完成的，我假设在 ThreadPool 线程内部.编写由 UI 线程(WinForms)完成.

In my application I use the .NET SerialPort class for reading and writing data. The reading is done using the DataReceived event, I assume internally on a ThreadPool thread. The writing is done by the UI thread (WinForms).

我想知道，是否有必要同步对 SerialPort 实例的访问，以便不会同时发生读/写.我的良心告诉我应该对这些调用加锁，但我很困惑，因为我在 Internet 上找到的所有 C# SerialPort 示例根本不使用锁定.

I was wondering, if it's necessary to synchronize the access to the SerialPort instance, so that no Reads/Writes can happen at the same time. My conscience tells me I should put locks around these calls, but I'm puzzled as all C# SerialPort examples I find on the Internet don't use locking at all.

推荐答案

这里有一个很棒的主题，SerialPort 类的作者参与:

Here's a great thread on the topic, with the author of the SerialPort class participating:

MSDN:如何SerialPort 是否处理 DataReceived?

根据我的经验，我编写了十几个串行通信应用程序用作硬件模拟器，我不锁定.我当时不知道我是否安全，但在实践中，我还没有出错.(20 多位测试人员和自动化测试机器几乎持续使用一年)也就是说，我的应用程序不会离开公司，如果我正在编写供公众使用的应用程序，我可能会更加小心.

From my experience, I've written a dozen serial communication apps for use as hardware simulators, I don't lock. I didn't know at the time if I was safe or not, but in practice, I haven't had an error yet. (a year of near constant use by 20+ testers and automated test machines) That said, my applications don't leave the company, if I were writing apps for public consumption I might take more care.

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