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Posted to dev@brpc.apache.org by "jiangdongzi (via GitHub)" <gi...@apache.org> on 2023/04/13 07:15:32 UTC

[I] 这段代码有问题吗 (brpc)

jiangdongzi opened a new issue, #2208:
URL: https://github.com/apache/brpc/issues/2208

   ![image](https://user-images.githubusercontent.com/17529657/231682306-4cba9530-6f69-407c-813b-2638da3989b4.png)
   切换到一个新bthread的时候,  `saved_errno` 和 `saved_unique_user_ptr` 不是毫无意义的值么?  第一次运行时在下面重新赋值了毫无意义的值? 


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Re: [I] 这段代码有问题吗 (brpc)

Posted by "jiangdongzi (via GitHub)" <gi...@apache.org>.
jiangdongzi closed issue #2208: 这段代码有问题吗
URL: https://github.com/apache/brpc/issues/2208


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Re: [I] 这段代码有问题吗 (brpc)

Posted by "jiangdongzi (via GitHub)" <gi...@apache.org>.
jiangdongzi commented on issue #2208:
URL: https://github.com/apache/brpc/issues/2208#issuecomment-1506662433

   > `jump_stack` 会切换到其他 bthread 执行任务，上下文切换了，当执行到下面的逻辑，`saved_errno` 和 `saved_unique_user_ptr`已经发生了更改，需要重新赋值。
   
   我知道需要重新赋值, 我的意思是bthread首次运行, 那么在该bthread的栈里边还没有`saved_errno` 和 `saved_unique_user_ptr` 这两个局部变量啊, 那么这两个值对该 新bthread来说不是完全随机的么


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Re: [I] 这段代码有问题吗 (brpc)

Posted by "ehds (via GitHub)" <gi...@apache.org>.
ehds commented on issue #2208:
URL: https://github.com/apache/brpc/issues/2208#issuecomment-1506579232

   jump_stack 会切换到其他 bthread 执行任务，上下文切换了，当执行到下面的逻辑，`saved_errno` 和 `saved_unique_user_ptr`已经发生了更改，需要重新赋值。


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