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？

youdao

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。

youdao

Skilling said today that he had no memory of ordering those earnings changes.

NPR: Enron Witnesses Lying About Fraud, Skilling Says

Samsung relies on its own memory and screen technology instead of delaying production time by ordering from other vendors.

FORBES: Cutting-Edge Devices vs. Blunt Marketing At HTC

He also has a photographic memory, and can casually reel off historical facts and economic theories like he's ordering another pint of Guinness.

CNN: Review: Genius is as genius does in 'Good Will Hunting'