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读阻塞且并发安全的 Map，答案是否有问题？ #66

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CraigMChen opened this issue Oct 13, 2022 · 0 comments

CraigMChen commented Oct 13, 2022

interview-go/src/q010.go

Line 57 in 63a7d02

m.rmx.RUnlock()

interview-go/src/q010.go

Line 58 in 63a7d02

m.rmx.Lock()

这两行代码中的解锁和加锁操作并不是原子的，在 57 行解锁后，锁可能会被其他协程拿到。如果锁被一个写操作的协程拿到，就会出现刚写入的键值对又被覆盖成空的情况。

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