iOS之深入解析CFRunloop的多线程隐患

Posted 2021-08-28 Forever_wj

一、前言

• 如果还不了解 Runloop，请参考我之前的博客：iOS之深入解析Runloop的底层原理。
• 在苹果官方文档中，声明了 CFRunloop 是线程安全的，但是需要注意的是，Apple 使用了generally 这个模糊的词语，如下所示：

	Thread safety varies depending on which API you are using to manipulate your run loop. The functions in Core Foundation are generally thread-safe and can be called from any thread. If you are performing operations that alter the configuration of the run loop, however