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update : 8_xv6之重新审视并发.md
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shzhxh committed May 7, 2024
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内核设计里有一个大挑战,就是同时达成优秀的并行性、并发情况下的正确性、代码的易理解性。直接使用锁当然可以实现正确性,但也没必要总是使用它。本章重点描述了xv6里的若干例子,它们有些使用了锁,有些使用了类似于锁的技术(但不是锁)。

#### 锁的模式

#### 类似于锁的模式

#### 完全不使用锁

#### 并行

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