What is the difference between these two besides the latter has a parameter for memory ordering?
什么是区别这两个除了后者对内存排序的参数？
LOCK-Based Critical Sections: Although a LOCK-UNLOCK pair does not act as a full memory barrier, these operations do affect memory ordering. Consider the following code.
锁保护的临界区：经lock -UNLOCK对不能实现完全的内存屏障的功能，但是，它们也的确会影响内存访问顺序，参考下面的示例代码。
LOCK-Based Critical Sections: Although a LOCK-UNLOCK pair does not act as a full memory barrier, these operations do affect memory ordering. Consider the following code.
锁保护的临界区：经lock -UNLOCK对不能实现完全的内存屏障的功能，但是，它们也的确会影响内存访问顺序，参考下面的示例代码。
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