# 系統程式設計 - Atomic Operations

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## 課程內容

### ECE 252 Lecture 21: Condition Variables, Monitors, and Atomic Types (35:31 ~ FIN)

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## 冷知識

### `__atomic`

如果去翻 `gcc` 的[手冊](https://gcc.gnu.org/onlinedocs/gcc/_005f_005fsync-Builtins.html)，會看到他說新的程式碼不應該使用這個，而是使用 `__atomic` 系列的 built-in functions

> ...They should not be used for new code which should use the [‘__atomic’](https://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html#g_t_005f_005fatomic-Builtins) builtins instead.