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                ## RWMutex * 同一時間段內 有多個 goroutine 獲取到讀鎖 * 同一時間段內 只有一個 goroutine 獲取到寫鎖 * 同一時間段內 只能存在讀鎖或者寫鎖 (讀寫鎖互斥) ~~~ var lock sync.RWMutex lock.RLock lock.Runlock lock.Lock() lock.Unlock() ~~~ 讀鎖代碼 ![](https://img.kancloud.cn/7b/2d/7b2d5233362c79ff22bd423f93b0758b_782x412.png) 寫鎖代碼 ![](https://img.kancloud.cn/14/ea/14ea3a4f7ba2332e3504f3e50e405f87_784x343.png) 運行結果 (同時/并發獲取讀鎖 然后釋放 )(獲取寫鎖 釋放寫鎖 獲取寫鎖 釋放寫鎖 ... ...)(讀寫鎖沒有同時執行 代表互斥) ![](https://img.kancloud.cn/95/38/95381649bbb81deb261812e91432010b_619x336.png) ![](https://img.kancloud.cn/3e/9b/3e9b11eb1636829835d28048caea400f_629x364.png)
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                              哎呀哎呀视频在线观看