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use BAIDU_VOLATILE_THREAD_LOCAL to declare tls_bls to avoid error compiler optimization - #2934
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是否可以在访问tls_bls变量时使用 BAIDU_GET_VOLATILE_THREAD_LOCAL宏？这种方法应该更通用一些 |
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+1 |
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master已经修复了ci中cmake的问题，麻烦rebase一下。@BiteTheDDDDt |
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chenBright
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Apr 4, 2025
yanglimingcn
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May 19, 2025
…piler optimization (apache#2934) * add attribute noinline to tls_bls update * update * fix compile error * update * update * update
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请问下，这个有可复现的demo吗？ |
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这个是我在升级apache doris依赖的brpc版本的时候遇见的问题，没有单独的demo。我猜测可能BAIDU_VOLATILE_THREAD_LOCAL在你们的编译器或者平台下没起作用？ |
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What problem does this PR solve?
解决bthread_setspecific注册的变量，用bthread_getspecific可能会找不到的问题。
Problem Summary:
根据 #1776 , #2156 里的一些相关描述，我尝试将清理tls这段代码抽出来作为单独函数并声明为noinline，在我自己的场景下测试可以修复这个问题
Changed:
Side effects:
Performance effects(性能影响):
Breaking backward compatibility(向后兼容性):
Check List: