是否需要同步.NET SerialPort 写入/读取?
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。写入是由 UI 线程 (WinForms) 完成的。
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,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。
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).
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.
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这是关于该主题的一个很棒的主题,SerialPort 类的作者参与了:
MSDN:SerialPort 如何处理 DataReceived?
根据我的经验,我已经编写了十几个用作硬件模拟器的串行通信应用程序,我不锁定。我当时不知道自己是否安全,但实际上,我还没有出现错误。 (20 多名测试人员和自动化测试机几乎持续使用的一年)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。
Here's a great thread on the topic, with the author of the SerialPort class participating:
MSDN: How does SerialPort handle DataReceived?
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.
从文档中:
所以你应该明确地用锁来同步你的读/写。
From the documentation:
So you should definetly synchronize your read/writes with locks.