Comments (5)
- 有,sync.Mutex 性能更好,因为 channel 可以认为是 sync.Mutex + 一堆额外逻辑,所以性能肯定比 sync.Mutex 要差。
- 不可以这么做,会有问题的: 调用 runtime.LockOSThread 期间不能持有锁,但是业务代码肯定需要锁;同时不能保证所有 goroutine 都在 gopool 下管理。
更正:LockOSThread 可以用锁,是 procPin 不能用锁。
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@PureWhiteWu 有可以公开的数据么😄
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@PureWhiteWu 有可以公开的数据么😄
你可以测试一下,代码都是公开的。
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调用 runtime.LockOSThread 期间不能持有锁,但是业务代码肯定需要锁;
请问这个结论是如何得出的,看代码只是占用了个线程而已,和能不能用mutex没关系吧
同时不能保证所有 goroutine 都在 gopool 下管理。
请问这个为什么不能保证?
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请问这个结论是如何得出的,看代码只是占用了个线程而已,和能不能用mutex没关系吧
抱歉,记混了,LockOSThread 可以用锁,procPin 不能用锁。
请问这个为什么不能保证?
因为总有场景以及业务会直接 go 出去 goroutine 的,这个没有好的办法进行限制,也不应该限制。
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