MFC提供许多类别，这些类别允许执行绪同步物件的存取，以维护执行绪安全性。
MFC provides a number of classes that allow threads to synchronize access to objects to maintain thread safety.
列举值没有集合的独占存取权，因此，列举一个集合在本质上并不是执行绪安全的程序。
The enumerator does not have exclusive access to the collection; therefore, enumerating through a collection is intrinsically not a thread-safe procedure.
将锁定的使用限制在只用于必须完整执行的程序码，您就能够写入确保资料安全的多执行绪元件，同时还是能够保持良好效能。
Restricting your locks only to code that must be executed atomically will allow you to write multithreaded components that ensure the safety of your data while still maintaining good performance.
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