{"id":50607,"date":"2023-07-31T04:52:54","date_gmt":"2023-02-23T23:52:50","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%ba%bf%e7%a8%8b%e3%80%81%e4%b8%80%e8%87%b4%e6%80%a7%e5%92%8c%e5%8e%9f%e5%ad%90%e6%80%a7%e3%80%82\/"},"modified":"2024-04-30T16:13:43","modified_gmt":"2024-04-30T08:13:43","slug":"%e7%ba%bf%e7%a8%8b%e3%80%81%e4%b8%80%e8%87%b4%e6%80%a7%e5%92%8c%e5%8e%9f%e5%ad%90%e6%80%a7%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%ba%bf%e7%a8%8b%e3%80%81%e4%b8%80%e8%87%b4%e6%80%a7%e5%92%8c%e5%8e%9f%e5%ad%90%e6%80%a7%e3%80%82\/","title":{"rendered":"\u7ebf\u7a0b\u3001\u4e00\u81f4\u6027\u548c\u539f\u5b50\u6027"},"content":{"rendered":"

\u8fd9\u662f\u5411\u96f6\u552e\u4eba\u5de5\u667a\u80fdx Advent Calendar 2022\u7684\u7b2c23\u5929\u8d21\u732e\u3002<\/p>\n

\u524d\uff1a\u7b2c22\u5929\uff1a\u5173\u4e8e\u4f7f\u7528@takurUN\u7684API\u7f51\u5173Kong\u8fdb\u884c\u5f00\u53d1\u7684\u8bdd\u9898\u3002
\n\u6b21\uff1a\u7b2c24\u5929\uff1a\u5c1d\u8bd5@k-yoshigai\u7684Go Workspace\u3002<\/p>\n

\u5199\u4ec0\u4e48<\/h2>\n

\u7531\u4e8e\u4e0d\u4e60\u60ef\u5199\u8fd9\u6837\u7684\u6587\u7ae0\uff0c\u800c\u4e14\u5982\u679c\u8981\u5199\u51fa\u5408\u9002\u7684\u5185\u5bb9\u53ef\u80fd\u9700\u8981\u4e00\u4e9b\u65f6\u95f4\uff0c\u6211\u4e00\u5ea6\u5f88\u72b9\u8c6b\u3002
\n\u6700\u540e\uff0c\u6211\u51b3\u5b9a\u5199\u4e00\u4e9b\u5173\u4e8eAtomic\u53d8\u91cf\u7684\u4e8b\u60c5\uff0c\u6a21\u7cca\u5730\u8bb0\u5f97\uff0c\u4e5f\u8bb8\u5c06\u6765\u4f1a\u6709\u4f7f\u7528\u7684\u573a\u5408\u3002\u6211\u6b63\u5728\u5199\u5173\u4e8erust\u4e2d\u7684\u7ebf\u7a0b\u548c\u5185\u5b58\u6a21\u578b\uff0c\u4f46\u5b83\u4e5f\u9002\u7528\u4e8e\u50cfC++\u8fd9\u6837\u7684\u7cfb\u7edf\u7f16\u7a0b\u8bed\u8a00\uff08\u5b9e\u9645\u4e0a\uff0crust\u7684\u5185\u5b58\u6a21\u578b\u662f\u57fa\u4e8eC++\u7684\uff09\u3002<\/p>\n

\u5728thread\u4e0a\u5f15\u53d1\u7ade\u4e89<\/h2>\n

\u9996\u5148\uff0c\u6211\u4eec\u51c6\u5907\u4e86\u4ee5\u4e0b\u7c7b\u4f3c\u7684\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u7528Rust\u7f16\u5199\uff0c\u4f46\u5373\u4f7f\u662f\u4e0d\u4e86\u89e3Rust\u7684\u4eba\uff0c\u4e5f\u5e94\u8be5\u80fd\u591f\u6839\u636e\u5916\u89c2\u5927\u81f4\u7406\u89e3\u3002<\/p>\n

fn<\/span> main<\/span>()<\/span> {<\/span>\r\n    \/\/ \u5f15\u65701: \u30b9\u30ec\u30c3\u30c9\u6570<\/span>\r\n    let<\/span> thread_count<\/span>:<\/span> u8<\/span> =<\/span> std<\/span>::<\/span>env<\/span>::<\/span>args<\/span>()<\/span>.nth<\/span>(<\/span>1<\/span>)<\/span>.unwrap<\/span>()<\/span>.parse<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n\r\n    \/\/ \u5f15\u65702: \u305d\u308c\u305e\u308c\u306e\u30b9\u30ec\u30c3\u30c9\u3067\u306e\u30ab\u30a6\u30f3\u30c8\u6570<\/span>\r\n    let<\/span> loop_count<\/span>:<\/span> u64<\/span> =<\/span> std<\/span>::<\/span>env<\/span>::<\/span>args<\/span>()<\/span>.nth<\/span>(<\/span>2<\/span>)<\/span>.unwrap<\/span>()<\/span>.parse<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n\r\n    println!<\/span>(<\/span>\"thread count = {thread_count}\"<\/span>);<\/span>\r\n    println!<\/span>(<\/span>\"loop count = {loop_count}\"<\/span>);<\/span>\r\n    println!<\/span>(<\/span>\r\n        \"result = {}\"<\/span>,<\/span>\r\n        count_up_relaxed<\/span>::<\/span>count_up<\/span>(<\/span>thread_count<\/span>,<\/span> loop_count<\/span>)<\/span>\r\n    );<\/span>\r\n}<\/span>\r\n\r\npub<\/span> fn<\/span> count_up<\/span>(<\/span>thread_count<\/span>:<\/span> u8<\/span>,<\/span> loop_count<\/span>:<\/span> u64<\/span>)<\/span> -><\/span> u64<\/span> {<\/span>\r\n    let<\/span> mut<\/span> value<\/span>:<\/span> u64<\/span> =<\/span> 0<\/span>;<\/span>\r\n    let<\/span> ptr<\/span> =<\/span> &<\/span>mut<\/span> value<\/span> as<\/span> *<\/span>mut<\/span> u64<\/span> as<\/span> usize<\/span>;<\/span>\r\n\r\n    \/\/ \u6307\u5b9a\u3055\u308c\u305f\u6570\u306ethread\u3092\u4f5c\u3063\u3066\u3001\u305d\u308c\u305e\u308c\u304c\u6307\u5b9a\u3055\u308c\u305f\u56de\u6570\u52061\u3092\u52a0\u7b97\u3059\u308b\u3002<\/span>\r\n    (<\/span>0<\/span>..<\/span>thread_count<\/span>)<\/span>\r\n        .map<\/span>(|<\/span>_<\/span>|<\/span> {<\/span>\r\n            std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>(<\/span>move<\/span> ||<\/span> {<\/span>\r\n                (<\/span>0<\/span>..<\/span>loop_count<\/span>)<\/span>.for_each<\/span>(|<\/span>_<\/span>|<\/span> unsafe<\/span> {<\/span>\r\n                    let<\/span> value<\/span> =<\/span> ptr<\/span> as<\/span> *<\/span>mut<\/span> u64<\/span>;<\/span>\r\n                    if<\/span> cfg!<\/span>(<\/span>debug_assertion<\/span>)<\/span> {<\/span>\r\n                        \/\/ debug build\u306e\u5834\u5408<\/span>\r\n                        *<\/span>value<\/span> +=<\/span> 1<\/span>;<\/span>\r\n                    }<\/span> else<\/span> {<\/span>\r\n                        \/\/ release build\u306e\u5834\u5408<\/span>\r\n                        *<\/span>value<\/span> =<\/span> std<\/span>::<\/span>ptr<\/span>::<\/span>read_volatile<\/span>(<\/span>ptr<\/span> as<\/span> *<\/span>const<\/span> u64<\/span>)<\/span> +<\/span> 1<\/span>;<\/span>\r\n                    }<\/span>\r\n                })<\/span>\r\n            })<\/span>\r\n        })<\/span>\r\n        .collect<\/span>::<\/span><<\/span>Vec<\/span><<\/span>_<\/span>>><\/span>()<\/span>\r\n        .into_iter<\/span>()<\/span>\r\n        .map<\/span>(<\/span>std<\/span>::<\/span>thread<\/span>::<\/span>JoinHandle<\/span>::<\/span>join<\/span>)<\/span>\r\n        .for_each<\/span>(<\/span>Result<\/span>::<\/span>unwrap<\/span>);<\/span>\r\n    value<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u505a\u7684\u4e8b\u60c5 (zu\u00f2 de<\/h3>\n
    \n
  1. \n
      \u51c6\u5907\u4e00\u4e2a\u6570\u5b57\u53d8\u91cf\uff0c<\/ol>\n<\/li>\n<\/ol>\n
       <\/p>\n
        \n
      1. \n
          \u521b\u5efa\u7531\u53c2\u6570\u6307\u5b9a\u6570\u91cf\u7684\u7ebf\u7a0b\uff0c<\/ol>\n<\/li>\n<\/ol>\n
           <\/p>\n
            \u5728\u6bcf\u4e2a\u7ebf\u7a0b\u5185\u90e8\u6839\u636e\u53c2\u6570\u6307\u5b9a\u7684\u6b21\u6570\u8fdb\u884c\u9012\u589e\u64cd\u4f5c\u3002<\/ol>\n
            \u5728\u666e\u901a\u7684Rust\u4e2d\uff0c\u7531\u4e8e\u65e0\u6cd5\u5728\u7ebf\u7a0b\u4e4b\u95f4\u5171\u4eab\u539f\u59cb\u6307\u9488\uff0c\u56e0\u6b64\u6211\u4f7f\u7528unsafe\u5757\u6765\u8fdb\u884c\u6307\u9488\u89e3\u5f15\u7528\u64cd\u4f5c\u3002\u8bf7\u6ce8\u610f\uff0c\u5728Rust\u4e2d\u9891\u7e41\u4f7f\u7528\u8fd9\u6837\u7684\u539f\u59cb\u6307\u9488\u5e76\u4e0d\u662f\u5f88\u5e38\u89c1\uff0c\u9664\u975e\u662f\u5728\u4f7f\u7528\u5e93\u6216\u5176\u4ed6\u60c5\u51b5\u4e0b\u3002<\/p>\n
            \u7ed3\u679c<\/h3>\n
            \u7ebf\u7a0b\u6570\u4e58\u4ee5\u8ba1\u6570\u6570\u7b49\u4e8e\u9884\u671f\u503c\u3002<\/p>\n
            \u5982\u679c\u662f\u4f7f\u7528\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b<\/h4>\n
              \n
            • \n
                thread\u6570 == 1<\/ul>\n<\/li>\n<\/ul>\n
                 <\/p>\n
                  \n
                • \n
                    count\u6570 == 1000000<\/ul>\n<\/li>\n<\/ul>\n
                     <\/p>\n
                      \n
                    • \n
                        \u671f\u5f85\u3059\u308b\u7d50\u679c = 1000000<\/ul>\n<\/li>\n<\/ul>\n
                         <\/p>\n
                          \u5b9f\u969b\u306e\u7d50\u679c = 1000000<\/ul>\n
                          \u5982\u679c\u67098\u4e2a\u7ebf\u7a0b\u7684\u60c5\u51b5<\/h4>\n
                            \n
                          • \n
                              thread\u6570 == 8<\/ul>\n<\/li>\n<\/ul>\n
                               <\/p>\n
                                \n
                              • \n
                                  count\u6570 == 1000000<\/ul>\n<\/li>\n<\/ul>\n
                                   <\/p>\n
                                    \n
                                  • \n
                                      \u671f\u5f85\u3059\u308b\u7d50\u679c = 8000000<\/ul>\n<\/li>\n<\/ul>\n
                                       <\/p>\n
                                        \u5b9f\u969b\u306e\u7d50\u679c = 2266221\uff08\u3068\u304b\u3002\u5b9f\u884c\u3059\u308b\u305f\u3073\u306b\u5909\u308f\u308b\uff09<\/ul>\n
                                        \u6211\u8ba4\u4e3a\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\u5c31\u53ef\u4ee5\u7528\u4e2d\u6587\u8fdb\u884c\u91ca\u4e49\uff1a<\/p>\n
                                        \u53ea\u8981\u770b\u7a0b\u5e8f\uff0c\u4f60\u5c31\u53ef\u4ee5\u731c\u5230\u7ed3\u679c\uff0c\u4f46\u662f\u5728\u4f7f\u7528\u4e24\u4e2a\u4ee5\u4e0a\u7684\u7ebf\u7a0b\u8fd0\u884c\u65f6\uff0c\u7ed3\u679c\u4f1a\u6bd4\u9884\u671f\u7684\u6570\u5b57\u5c11\u3002\u8fd9\u662f\u7531\u4e8e\u5728\u8bfb\u53d6\u503c\u5e76\u5c06\u5176\u52a01\u540e\u5199\u5165\u65f6\uff0c\u5176\u4ed6\u7ebf\u7a0b\u53ef\u80fd\u4f1a\u5e72\u6270\uff0c\u8fd9\u5c31\u662f\u7ade\u4e89\u6761\u4ef6\u3002<\/p>\n
                                        \u7a0d\u5fae\u89e3\u91ca\u4e00\u4e0b\uff0c\u53ea\u6709\u5728\u53d1\u5e03\u7248\u672c\uff08release build\uff09\u65f6\u624d\u4f1a\u4f7f\u7528read_volatile\u3002\u8fd9\u662f\u56e0\u4e3a\u5f53\u6211\u4eec\u53ea\u662f\u5c06\u4e00\u4e2a\u7b80\u5355\u7684u64\u6307\u9488\u5199\u5165\u5e76\u8fdb\u884c\u53d1\u5e03\u7248\u672c\u7f16\u8bd1\u65f6\uff0c\u4f18\u5316\u4f1a\u7acb\u5373\u751f\u6548\u5e76\u8fd4\u56de\u6b63\u786e\u7684\u503c\u3002\u867d\u7136\u6211\u60f3\u8981\u5728\u6c47\u7f16\u4ee3\u7801\u4e2d\u8fdb\u884c\u786e\u8ba4\uff0c\u4f46\u7ed3\u679c\u5374\u975e\u5e38\u591a\u800c\u4e14\u6211\u65e0\u6cd5\u5b8c\u5168\u7406\u89e3\uff0c\u6240\u4ee5\u6211\u4e0d\u592a\u786e\u5b9a\u3002<\/p>\n
                                        \u800c\u5728\u8c03\u8bd5\u7248\u672c\uff08debug build\uff09\u4e2d\uff0c\u4f18\u5316\u4e0d\u4f1a\u751f\u6548\uff0c\u56e0\u6b64\u4f1a\u8f93\u51fa\u4e00\u4e9b\u5947\u602a\u7684\u6570\u5b57\u3002<\/p>\n
                                        \u7ade\u6001\u6761\u4ef6\u5904\u7406\uff08\u4e92\u65a5\u9501\uff09<\/h3>\n
                                        \u867d\u7136\u8d70\u5f2f\u8def\u4e86\uff0c\u4f46\u6700\u5bb9\u6613\u7406\u89e3\u7684\u89e3\u51b3\u65b9\u6cd5\u662f\uff0c\u6bcf\u4e2a\u4eba\u90fd\u4f1a\u9996\u5148\u8003\u8651\u4f7f\u7528\u4e92\u65a5\u9501\u3002
                                        \n\u5728\u52a0\u6cd5\u90e8\u5206\u52a0\u4e0a\u9501\uff0c\u8fd9\u6837\u8be5\u90e8\u5206\u53ea\u80fd\u540c\u65f6\u8fd0\u884c\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u4ece\u800c\u83b7\u5f97\u9884\u671f\u7684\u6570\u5b57\u3002\u5f88\u65b9\u4fbf\u5462\u3002<\/p>\n
                                        pub<\/span> fn<\/span> count_up<\/span>(<\/span>thread_count<\/span>:<\/span> u8<\/span>,<\/span> loop_count<\/span>:<\/span> u64<\/span>)<\/span> -><\/span> u64<\/span> {<\/span>\r\n    use<\/span> std<\/span>::<\/span>sync<\/span>::{<\/span>Arc<\/span>,<\/span> Mutex<\/span>};<\/span>\r\n\r\n    let<\/span> value<\/span>:<\/span> Arc<\/span><<\/span>Mutex<\/span><<\/span>u64<\/span>>><\/span> =<\/span> Arc<\/span>::<\/span>new<\/span>(<\/span>Mutex<\/span>::<\/span>new<\/span>(<\/span>0<\/span>));<\/span>\r\n\r\n    \/\/ \u6307\u5b9a\u3055\u308c\u305f\u6570\u306ethread\u3092\u4f5c\u3063\u3066\u3001\u305d\u308c\u305e\u308c\u304c\u6307\u5b9a\u3055\u308c\u305f\u56de\u6570\u52061\u3092\u52a0\u7b97\u3059\u308b\u3002<\/span>\r\n    (<\/span>0<\/span>..<\/span>thread_count<\/span>)<\/span>\r\n        .map<\/span>(|<\/span>_<\/span>|<\/span> {<\/span>\r\n            std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>({<\/span>\r\n                let<\/span> value<\/span> =<\/span> Arc<\/span>::<\/span>clone<\/span>(<\/span>&<\/span>value<\/span>);<\/span>\r\n                move<\/span> ||<\/span> {<\/span>\r\n                    (<\/span>0<\/span>..<\/span>loop_count<\/span>)<\/span>.for_each<\/span>(|<\/span>_<\/span>|<\/span> {<\/span>\r\n                        let<\/span> mut<\/span> value<\/span> =<\/span> value<\/span>.lock<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n                        *<\/span>value<\/span> +=<\/span> 1<\/span>;<\/span>\r\n                    })<\/span>\r\n                }<\/span>\r\n            })<\/span>\r\n        })<\/span>\r\n        .collect<\/span>::<\/span><<\/span>Vec<\/span><<\/span>_<\/span>>><\/span>()<\/span>\r\n        .into_iter<\/span>()<\/span>\r\n        .map<\/span>(<\/span>std<\/span>::<\/span>thread<\/span>::<\/span>JoinHandle<\/span>::<\/span>join<\/span>)<\/span>\r\n        .for_each<\/span>(<\/span>Result<\/span>::<\/span>unwrap<\/span>);<\/span>\r\n    Arc<\/span>::<\/span>try_unwrap<\/span>(<\/span>value<\/span>)<\/span>.unwrap<\/span>()<\/span>.into_inner<\/span>()<\/span>.unwrap<\/span>()<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                        \u7ade\u6001\u6761\u4ef6\u9632\u62a4\u63aa\u65bd\uff08\u539f\u5b50\u53d8\u91cf\uff09<\/h3>\n
                                        Mutex\u7528\u6765\u52a0\u9501\uff0c\u4f46\u5982\u679c\u4f7f\u7528Atomic\u53d8\u91cf\uff0c\u53ef\u4ee5\u5728\u5185\u5b58\u8bbf\u95ee\u7684\u7ea7\u522b\u4e0a\u5f97\u5230\u5f88\u597d\u7684\u6548\u679c\u3002\u6211\u8ba4\u4e3a\u8fd9\u662f\u5f88\u591a\u4eba\u6839\u636e\u9700\u8981\u505a\u7684\u4e8b\u60c5\u3002<\/p>\n
                                        pub<\/span> fn<\/span> count_up<\/span>(<\/span>thread_count<\/span>:<\/span> u8<\/span>,<\/span> loop_count<\/span>:<\/span> u64<\/span>)<\/span> -><\/span> u64<\/span> {<\/span>\r\n    use<\/span> std<\/span>::<\/span>sync<\/span>::{<\/span>\r\n        atomic<\/span>::{<\/span>AtomicU64<\/span>,<\/span> Ordering<\/span>},<\/span>\r\n        Arc<\/span>,<\/span>\r\n    };<\/span>\r\n\r\n    let<\/span> value<\/span>:<\/span> Arc<\/span><<\/span>AtomicU64<\/span>><\/span> =<\/span> Arc<\/span>::<\/span>new<\/span>(<\/span>AtomicU64<\/span>::<\/span>new<\/span>(<\/span>0<\/span>));<\/span>\r\n\r\n    \/\/ \u6307\u5b9a\u3055\u308c\u305f\u6570\u306ethread\u3092\u4f5c\u3063\u3066\u3001\u305d\u308c\u305e\u308c\u304c\u6307\u5b9a\u3055\u308c\u305f\u56de\u6570\u52061\u3092\u52a0\u7b97\u3059\u308b\u3002<\/span>\r\n    (<\/span>0<\/span>..<\/span>thread_count<\/span>)<\/span>\r\n        .map<\/span>(|<\/span>_<\/span>|<\/span> {<\/span>\r\n            std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>({<\/span>\r\n                let<\/span> value<\/span> =<\/span> Arc<\/span>::<\/span>clone<\/span>(<\/span>&<\/span>value<\/span>);<\/span>\r\n                move<\/span> ||<\/span> {<\/span>\r\n                    (<\/span>0<\/span>..<\/span>loop_count<\/span>)<\/span>.for_each<\/span>(|<\/span>_<\/span>|<\/span> {<\/span>\r\n                        value<\/span>.fetch_add<\/span>(<\/span>1<\/span>,<\/span> Ordering<\/span>::<\/span>Relaxed<\/span>);<\/span>\r\n                    })<\/span>\r\n                }<\/span>\r\n            })<\/span>\r\n        })<\/span>\r\n        .collect<\/span>::<\/span><<\/span>Vec<\/span><<\/span>_<\/span>>><\/span>()<\/span>\r\n        .into_iter<\/span>()<\/span>\r\n        .map<\/span>(<\/span>std<\/span>::<\/span>thread<\/span>::<\/span>JoinHandle<\/span>::<\/span>join<\/span>)<\/span>\r\n        .for_each<\/span>(<\/span>Result<\/span>::<\/span>unwrap<\/span>);<\/span>\r\n    value<\/span>.load<\/span>(<\/span>Ordering<\/span>::<\/span>Relaxed<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                        \u6bcf\u4e2a\u4eba\u8f7b\u677e\u53d1\u5e03\u6784\u5efa\u901f\u5ea6\u8fdb\u884c\u4e86\u57fa\u51c6\u6d4b\u8bd5\uff0c\u7ed3\u679c\u5982\u4e0b\u3002<\/p>\n
                                          8 thread\/1_000_000\u30ab\u30a6\u30f3\u30c8\u3057\u305f\u3068\u304d\u306e\u7d50\u679c\uff08criterion\u3067\u8a08\u6e2c\uff09<\/ul>\n
                                          \n
                                          pointer\u306b\u76f4\u63a5\u52a0\u7b97MutexAtomic\u5909\u65706.0298 ms552.02 ms105.90 ms<\/div>\n<\/div>\n
                                          \u7531\u4e8e\u672c\u6b21\u5904\u7406\u4e2d\u7684\u7ebf\u7a0b\u51e0\u4e4e\u5b8c\u5168\u6210\u4e3a\u4e86\u4e34\u754c\u533a\uff0c\u6240\u4ee5\u5c06\u5176\u7ebf\u7a0b\u5316\u5b9e\u9645\u4e0a\u6beb\u65e0\u610f\u4e49\uff0c\u4e0d\u7528\u7ebf\u7a0b\u6bd4\u4f7f\u7528\u7ebf\u7a0b\u8981\u5feb\u5f97\u591a\uff08\u867d\u7136\u6ca1\u6709\u8fdb\u884c\u57fa\u51c6\u6d4b\u8bd5\uff09\u3002
                                          \n\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u5229\u7528\u7ebf\u7a0b\u65f6\u4f1a\u5728\u7ebf\u7a0b\u5185\u8fdb\u884c\u5404\u79cd\u5e76\u884c\u5904\u7406\uff0c\u5176\u4e2d\u53ef\u80fd\u5b58\u5728\u4e34\u754c\u533a\uff0c\u4f46\u672c\u6b21\u5904\u7406\u53ea\u662f\u6781\u7aef\u60c5\u51b5\u4e2d\u7684\u4e34\u754c\u533a\u3002<\/p>\n
                                          \u4ece\u8fd9\u91cc\u5f97\u51fa\u7684\u89c2\u70b9\u53ef\u80fd\u662f<\/p>\n
                                          pointer\u306b\u76f4\u63a5\u52a0\u7b97\u3059\u308b\u65b9\u6cd5
                                          \n\u6b63\u78ba\u306a\u6570\u5b57\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u4f7f\u3048\u306a\u3044\u3002\u5b58\u5728\u306e\u78ba\u8a8d\u306a\u3069\u3092\u9ad8\u901f\u306b\u884c\u3046\u3060\u3051\u306a\u3089\u5341\u5206\u4f7f\u3048\u308b\u3088\u3046\u306a\u6c17\u3082\u3057\u307e\u3059\u3002<\/p>\n
                                          Mutex\u3092\u4f7f\u3046\u65b9\u6cd5
                                          \n\u6b63\u78ba\u3060\u3051\u3069\u9045\u3044\u3002<\/p>\n
                                          Atomic\u5909\u6570\u3092\u4f7f\u3046\u65b9\u6cd5
                                          \n\u6b63\u78ba\u3060\u3057\u901f\u3044\u3002Atomic\u5909\u6570\u3092\u4f7f\u3048\u308b\u306a\u3089\u3070\u4f7f\u3063\u305f\u307b\u3046\u304c\u3044\u3044\u3002<\/p>\n
                                          \u6240\u4ee5\uff0c\u524d\u9762\u7684\u94fa\u57ab\u5f88\u957f\uff0c\u4f46\u662f\u4ece\u8fd9\u91cc\u5f00\u59cb\u3002<\/p>\n
                                          \u5728\u591a\u4e2a\u7ebf\u7a0b\u4e2d\u89c2\u5bdf\u5185\u5b58\u503c\u7684\u65b9\u5f0f<\/h2>\n
                                          \u6211\u4f1a\u8fd0\u884c\u8fd9\u6837\u7684\u7a0b\u5e8f\u3002<\/p>\n
                                          fn<\/span> main<\/span>()<\/span> {<\/span>\r\n    loop<\/span> {<\/span>\r\n        let<\/span> mut<\/span> x<\/span> =<\/span> 0<\/span>;<\/span>\r\n        let<\/span> mut<\/span> y<\/span> =<\/span> 0<\/span>;<\/span>\r\n        let<\/span> ptr_x<\/span> =<\/span> &<\/span>mut<\/span> x<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span> as<\/span> usize<\/span>;<\/span>\r\n        let<\/span> ptr_y<\/span> =<\/span> &<\/span>mut<\/span> y<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span> as<\/span> usize<\/span>;<\/span>\r\n\r\n        let<\/span> thread_0<\/span> =<\/span> std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>(<\/span>move<\/span> ||<\/span> unsafe<\/span> {<\/span>\r\n            \/\/ \u3053\u3053\u3067\u306a\u306b\u304b\u306e\u51e6\u7406<\/span>\r\n\r\n            \/\/ store x<\/span>\r\n            *<\/span>(<\/span>ptr_x<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span>)<\/span> =<\/span> 1<\/span>;<\/span>\r\n            \/\/ store y<\/span>\r\n            *<\/span>(<\/span>ptr_y<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span>)<\/span> =<\/span> 1<\/span>;<\/span>\r\n        });<\/span>\r\n\r\n        let<\/span> thread_1<\/span> =<\/span> std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>(<\/span>move<\/span> ||<\/span> unsafe<\/span> {<\/span>\r\n            \/\/ \u3053\u3053\u3067\u306a\u306b\u304b\u306e\u51e6\u7406<\/span>\r\n\r\n            \/\/ load y<\/span>\r\n            let<\/span> y<\/span> =<\/span> *<\/span>(<\/span>ptr_y<\/span> as<\/span> *<\/span>const<\/span> i32<\/span>);<\/span>\r\n            \/\/ load x<\/span>\r\n            let<\/span> x<\/span> =<\/span> *<\/span>(<\/span>ptr_x<\/span> as<\/span> *<\/span>const<\/span> i32<\/span>);<\/span>\r\n            (<\/span>x<\/span>,<\/span> y<\/span>)<\/span>\r\n        });<\/span>\r\n\r\n        thread_0<\/span>.join<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n        let<\/span> (<\/span>x<\/span>,<\/span> y<\/span>)<\/span> =<\/span> thread_1<\/span>.join<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n\r\n        if<\/span> x<\/span> ==<\/span> 0<\/span> &&<\/span> y<\/span> ==<\/span> 1<\/span> {<\/span>\r\n            panic!<\/span>(<\/span>\"\u4e00\u8cab\u6027\u304c\u7121\u3044\"<\/span>);<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                          \u6b63\u5728\u505a\u7684\u4e8b\u60c5<\/h3>\n
                                            \n
                                          1. \n
                                              \u51c6\u5907\u4e24\u4e2a\u53d8\u91cfx\u548cy\u3002<\/ol>\n<\/li>\n<\/ol>\n
                                               <\/p>\n
                                                \n
                                              1. \n
                                                  \u7ebf\u7a0b0\u5c06\u5b58\u50a81\u5230x\u548cy\u3002<\/ol>\n<\/li>\n<\/ol>\n
                                                   <\/p>\n
                                                    \u51e0\u4e4e\u540c\u65f6\u542f\u52a8\u7684\u7ebf\u7a0b1\u5c06\u6309\u7167y\u548cx\u7684\u987a\u5e8f\u52a0\u8f7d\u3002<\/ol>\n
                                                    \u671f\u671b\u7684\u7ed3\u679c<\/h3>\n
                                                    \u5f53\u4f60\u957f\u65f6\u95f4\u4ece\u4e8b\u7ffb\u8bd1\u5de5\u4f5c\u65f6\uff0c\u4e0d\u77e5\u4e0d\u89c9\u4f1a\u5f62\u6210\u4e00\u79cd\u9010\u53e5\u7ffb\u8bd1\u7684\u611f\u89c9\uff0c\u5e76\u671f\u671b\u5f97\u5230\u4ee5\u4e0b\u7c7b\u4f3c\u7684\u7ed3\u679c\u3002<\/p>\n
                                                    \n
                                                    xy\u60f3\u50cf\u3055\u308c\u308b\u51e6\u7406\u980600thread_1: y<\/code>\u3092load\uff08y == 0\uff09
                                                    \nthread_1: x<\/code>\u3092load\uff08x == 0\uff09
                                                    \nthread_0: x<\/code>\u306bstore
                                                    \nthread_0: y<\/code>\u306bstore11thread_0: x<\/code>\u306bstore
                                                    \nthread_0: y<\/code>\u306bstore
                                                    \nthread_1: y<\/code>\u3092load\uff08y == 1\uff09
                                                    \nthread_1: x<\/code>\u3092load\uff08x == 1\uff0910thread_0: x<\/code>\u306bstore
                                                    \nthread_1: y<\/code>\u3092load\uff08y == 0\uff09
                                                    \nthread_0: y<\/code>\u306bstore
                                                    \nthread_1: x<\/code>\u3092load\uff08x == 1\uff09<\/div>\n<\/div>\n
                                                    \u53e6\u4e00\u4e2a\u5b9e\u9645\u53d1\u751f\u7684\u7ed3\u679c<\/h3>\n
                                                    \u5c3d\u7ba1\u4e0a\u8ff0\u7684\u4e09\u79cd\u60c5\u51b5\u662f\u5fc5\u7136\u53d1\u751f\u7684\uff0c\u4f46\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u6709\u53ef\u80fd\u51fa\u73b0 x == 0\uff0cy == 1 \u7684\u7ed3\u679c\u3002\u8fd9\u662f\u5bfc\u81f4\u4e0a\u8ff0\u7a0b\u5e8f\u51fa\u73b0 panic! \u7684\u5730\u65b9\u3002
                                                    \n\u867d\u7136\u6309\u7167\u4e0a\u8ff0\u8bf4\u6cd5\u8fd9\u79cd\u60c5\u51b5\u4e0d\u4f1a\u7ecf\u5e38\u53d1\u751f\uff0c\u4f46\u5728\u6bcf\u4e2a\u7ebf\u7a0b\u4e2d\u52a0\u5165\u5176\u4ed6\u4ee3\u7801\u65f6\uff0c\u5076\u5c14\u4f1a\u53d1\u751f\u3002<\/p>\n
                                                    thread_1\u4e2dy\u770b\u8d77\u6765\u662f1\uff0c\u8fd9\u610f\u5473\u7740\u5728thread_0\u4e2dx\u5e94\u8be5\u5df2\u7ecf\u5b58\u50a8\u4e861\uff0c\u4f46\u53d8\u6210\u4e860\u3002\u5f88\u5947\u602a\u3002\u6b64\u65f6\u53d1\u751f\u7684\u60c5\u51b5\u53ef\u80fd\u662f\u4ee5\u4e0b\u4e24\u79cd\u4e4b\u4e00\u3002<\/p>\n
                                                      \n
                                                    • \n
                                                        thread_1\u304b\u3089\u89b3\u3066\u3001thread_0\u304c\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u66f8\u3044\u305f\u9806\u3068\u306f\u9006\u306b\u3001store y, store x\u306e\u9806\u3067\u5b9f\u884c\u3055\u308c\u305f\uff08\u3088\u3046\u306b\u898b\u3048\u308b\u3088\u3046\u306b\u52d5\u3044\u305f\uff09<\/ul>\n<\/li>\n<\/ul>\n
                                                         <\/p>\n
                                                          thread_0\u304b\u3089\u89b3\u3066\u3001thread_1\u304c\u3001\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u304c\u66f8\u3044\u305f\u9806\u3068\u306f\u9006\u306b\u3001load x, load y\u306e\u9806\u3067\u5b9f\u884c\u3055\u308c\u305f\uff08\u3088\u3046\u306b\u898b\u3048\u308b\u3088\u3046\u306b\u52d5\u3044\u305f\uff09<\/ul>\n
                                                          \u5728\u7a0b\u5e8f\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u7a0b\u5e8f\u5e76\u4e0d\u4e00\u5b9a\u4f1a\u6309\u7167\u7a0b\u5e8f\u5458\u7f16\u5199\u7684\u987a\u5e8f\u9010\u6b65\u6267\u884c\u3002\u8fd9\u662f\u56e0\u4e3a\u5728\u6267\u884c\u65f6\u4f1a\u5bf9\u987a\u5e8f\u8fdb\u884c\u4f18\u5316\u3002\u9664\u975e\u5b58\u5728\u67d0\u79cd\u7ea6\u675f\u6027\u7684\u6307\u4ee4\uff0c\u5426\u5219CPU\u548c\u7f16\u8bd1\u5668\u53ef\u4ee5\u81ea\u7531\u5730\u5bf9\u6307\u4ee4\u8fdb\u884c\u91cd\u65b0\u6392\u5e8f\uff0c\u800c\u4e0d\u4f1a\u5f71\u54cd\u7ed3\u679c\u3002<\/p>\n
                                                          \u5982\u679c\u5728\u4e0b\u4e00\u4e2a\u6307\u4ee4\u4e2d\u9700\u8981\u4f7f\u7528\u7684\u503c\u672a\u52a0\u8f7d\u5230CPU\u7f13\u5b58\u4e2d\uff0c\u800c\u4e0b\u4e00\u4e2a\u4e0b\u4e00\u4e2a\u6307\u4ee4\u4e2d\u9700\u8981\u4f7f\u7528\u7684\u503c\u5df2\u7ecf\u52a0\u8f7d\u5230CPU\u7f13\u5b58\u4e2d\uff0c\u5219\u636e\u8bf4\u5728\u52a0\u8f7d\u4e0b\u4e00\u4e2a\u6307\u4ee4\u4e2d\u9700\u8981\u4f7f\u7528\u7684\u503c\u7684\u540c\u65f6\uff0c\u53ef\u80fd\u4f1a\u4f18\u5148\u6267\u884c\u4e0b\u4e00\u4e2a\u4e0b\u4e00\u4e2a\u6307\u4ee4\u3002<\/p>\n
                                                          \u5728\u666e\u901a\u7684\u7a0b\u5e8f\u4e2d\uff0c\u8fd9\u4e2a\u529f\u80fd\u53ef\u4ee5\u5f88\u597d\u5730\u8fd0\u884c\uff0c\u7279\u522b\u662f\u5728\u5355\u7ebf\u7a0b\u4e2d\uff0c\u4e0d\u4ec5\u4e0d\u9700\u8981\u62c5\u5fc3\uff0c\u53cd\u800c\u80fd\u52a0\u5feb\u901f\u5ea6\uff0c\u5b83\u662f\u4e00\u4e2a\u503c\u5f97\u611f\u6fc0\u7684\u529f\u80fd\u3002\u4f46\u662f\uff0c\u5728\u591a\u7ebf\u7a0b\u4e2d\u4f7f\u7528\u8fd9\u4e2a\u529f\u80fd\u53ef\u80fd\u4f1a\u5f15\u53d1\u95ee\u9898\u3002<\/p>\n
                                                          \u5728\u4e0a\u4f8b\u4e2d\uff0c\u4f7f\u7528\u4e86\u4e24\u4e2a\u7ebf\u7a0b\uff0c\u4f46\u5f53\u51c6\u5907\u597d\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u65f6\uff0c\u53ef\u80fd\u4f1a\u53d1\u751f\u4e0e\u7ebf\u7a0b1\u89c2\u5bdf\u5230\u7684\u987a\u5e8f\u76f8\u53cd\u7684\u60c5\u51b5\uff0c\u4e5f\u5c31\u662f\u6bcf\u4e2a\u4eba\u90fd\u53ef\u80fd\u770b\u5230\u4e0d\u540c\u7684\u7ed3\u679c\uff0c\u8fd9\u662f\u4e00\u79cd\u5b8c\u5168\u4e0d\u4e00\u81f4\u7684\u72b6\u6001\u3002<\/p>\n
                                                          \u4e00\u8d2f\u6027\u7684\u5206\u7c7b<\/h2>\n
                                                          \u6211\u5011\u5c07\u63a2\u8a0e\u4e00\u8cab\u6027\u7684\u8a71\u984c\uff0c\u4e26\u56de\u6536\u6a19\u984c\u4e2d\u7b2c\u4e8c\u500b\u7528\u8a9e\u3002
                                                          \n\u60a8\u53ef\u80fd\u807d\u904e\u300c\u6700\u7d42\u4e00\u81f4\u6027\u300d\u9019\u500b\u8a5e\u3002\u5b83\u662f\u6307\u5728\u4f7f\u7528\u6642\u80fd\u5920\u8fc5\u901f\u8b93\u503c\u8b8a\u5f97\u53ef\u898b\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u9700\u8981\u82b1\u8cbb\u76f8\u7576\u591a\u7684\u667a\u529b\u3002<\/p>\n
                                                          \u8fc7\u53bb\uff0c\u5f53Cassandra\u521a\u521a\u63a8\u51fa\u65f6\uff0c\u5982\u679c\u8fdb\u884cGET\u64cd\u4f5c\uff08\u800c\u4e14\u6ca1\u6709\u8fdb\u884cRead Repair\uff09\uff0c\u6709\u65f6\u4f1a\u8fd4\u56de\u51e0\u4ee3\u4ee5\u524d\u7684\u503c\uff0c\u8fd9\u8ba9\u6211\u611f\u5230\u975e\u5e38\u56f0\u60d1\uff08\u867d\u7136\u8fd9\u79cd\u60c5\u51b5\u73b0\u5728\u5df2\u7ecf\u5f88\u5c11\u89c1\u4e86\uff09\u3002\u7136\u800c\uff0c\u6b63\u56e0\u4e3a\u6709\u8fd9\u79cd\u884c\u4e3a\uff0c\u6211\u4eec\u53ef\u4ee5\u8bf4Cassandra\u7b26\u5408Eventual Consistency\u7684\u539f\u5219\u3002\u4e25\u683c\u6765\u8bf4\uff0c\u5b83\u51e0\u4e4e\u6ca1\u6709\u4efb\u4f55\u4fdd\u8bc1\u3002<\/p>\n
                                                          \u5c31\u76ee\u524d\u6765\u8bf4\uff0c\u9664\u4e86Eventual Consistency\u4e4b\u5916\uff0c\u4f3c\u4e4e\u8fd8\u6709\u5f88\u591a\u5176\u4ed6\u4fdd\u8bc1\u4e00\u81f4\u6027\u7684\u7ea7\u522b\u3002\u73b0\u5728\u6211\u4ece\u7ebf\u7a0b\u548c\u5185\u5b58\u7684\u89d2\u5ea6\u5217\u4e3e\u4e00\u4e9b\u8f83\u4e3a\u4e3b\u6d41\u7684\u9009\u9879\u3002<\/p>\n
                                                          1. \u5177\u6709\u5e76\u884c\u968f\u673a\u8bbf\u95ee\u5b58\u50a8\u4e00\u81f4\u6027\uff08\u5148\u8fdb\u5148\u51fa\u5b58\u50a8\u4e00\u81f4\u6027\uff09<\/h3>\n
                                                            \n
                                                          • \n
                                                              \u3042\u308bthread\u304c\u3042\u308b\u5834\u6240\u306bstore\u64cd\u4f5c\u3057\u305f\u7d50\u679c\u306f\u3001\u4ed6\u306ethread\u304b\u3089\u3082\u540c\u3058\u9806\u5e8f\u3067\uff08\u4e00\u8cab\u3057\u3066\uff09\u89b3\u6e2c\u3067\u304d\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
                                                               <\/p>\n
                                                                \u5225\u306ethread\u304b\u3089\u540c\u3058\u5834\u6240\u306b\u66f8\u304d\u8fbc\u307e\u308c\u305f\u5024\u306f\u3001\u4ed6\u306ethread\u304b\u3089\u7570\u306a\u308b\u9806\u5e8f\u3067\u89b3\u6e2c\u3055\u308c\u3066\u3082\u3088\u3044\u3002<\/ul>\n
                                                                2. \u56e0\u679c\u4e00\u81f4\u6027 (Causal Consistency)<\/h3>\n
                                                                  \n
                                                                • \n
                                                                    PRAM Consistency\u306e\u30ec\u30d9\u30eb\u3068\u3001<\/ul>\n<\/li>\n<\/ul>\n
                                                                     <\/p>\n
                                                                      \n
                                                                    • \n
                                                                        \u8907\u6570thread\u9593\u3067\u306e\u56e0\u679c\u95a2\u4fc2\u304c\u3042\u308bstore\u306e\u9806\u5e8f\u306f\u3001\u4ed6\u306ethread\u304b\u3089\u3082\u540c\u3058\u9806\u3067\uff08\u4e00\u8cab\u3057\u3066\uff09\u89b3\u6e2c\u3055\u308c\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
                                                                         <\/p>\n
                                                                          \u8907\u6570thread\u9593\u3067\u306e\u56e0\u679c\u95a2\u4fc2\u304c\u7121\u3044store\u306e\u9806\u5e8f\u306f\u3001\u4ed6\u306ethread\u304b\u3089\u7570\u306a\u308b\u9806\u5e8f\u3067\u89b3\u6e2c\u3055\u308c\u3066\u3082\u3088\u3044\u3002<\/ul>\n
                                                                          \u5982\u679c\u4f60\u6bcf\u5929\u52aa\u529b\u5b66\u4e60\uff0c\u90a3\u4e48\u4f60\u7684\u6210\u7ee9\u5c31\u4f1a\u63d0\u9ad8\u3002<\/p>\n
                                                                            \n
                                                                          • \n
                                                                              thread_1\u304c\u3001\u5909\u6570a\u3092store<\/ul>\n<\/li>\n<\/ul>\n
                                                                               <\/p>\n
                                                                                thread_2\u304c\u3001\u5909\u6570a\u3092load\u3057\u305f\u7d50\u679c\u304b\u3089\u8a08\u7b97\u3057\u3066\u5909\u6570b\u306bstore\u3057\u305f<\/ul>\n
                                                                                \u5f53\u6709\u5c06\u503c\u5b58\u50a8\u5230\u53d8\u91cfa\u548c\u5c06\u503c\u5b58\u50a8\u5230\u53d8\u91cfb\u4e4b\u95f4\u5b58\u5728\u56e0\u679c\u5173\u7cfb\u65f6\uff0c\u6211\u4eec\u79f0\u4e4b\u4e3a\u5b58\u50a8\u5230\u53d8\u91cfa\u548c\u5b58\u50a8\u5230\u53d8\u91cfb\u4e4b\u95f4\u5b58\u5728\u56e0\u679c\u5173\u7cfb\u3002<\/p>\n
                                                                                3. \u8fde\u7eed\u4e00\u81f4\u6027<\/h3>\n
                                                                                  \n
                                                                                • \n
                                                                                    Causal Consistency\u306e\u30ec\u30d9\u30eb\u3068\u3001<\/ul>\n<\/li>\n<\/ul>\n
                                                                                     <\/p>\n
                                                                                      \n
                                                                                    • \n
                                                                                        \u30e1\u30e2\u30ea\u64cd\u4f5c\u306e\u9806\u5e8f\u306f\u3001\u3069\u306ethread\u304b\u3089\u3082\u540c\u3058\u9806\u5e8f\u3067\uff08\u4e00\u8cab\u3057\u3066\uff09\u89b3\u6e2c\u3055\u308c\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
                                                                                         <\/p>\n
                                                                                          \n
                                                                                        • \n
                                                                                            store\u3057\u305f\u5024\u304cload\u3067\u89b3\u6e2c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u6642\u9593\u306f\u3001thread\u9593\u3067\u7570\u306a\u3063\u3066\u3088\u3044\u3002<\/ul>\n<\/li>\n<\/ul>\n
                                                                                             <\/p>\n
                                                                                              \u89b3\u6e2c\u3055\u308c\u308b\u5024\u306e\u5909\u5316\u306e\u9806\u5e8f\u306f\u3001\u5b9f\u6642\u9593\u306b\u304a\u3051\u308bstore\u306e\u9806\u5e8f\u3068\u4e00\u81f4\u3057\u306a\u304f\u3066\u3082\u3088\u3044\u3002<\/ul>\n
                                                                                              \u6709\u70b9\u96be\u7406\u89e3\uff0c\u4f46\u8fd9\u91cc\u6240\u8bf4\u7684\u987a\u5e8f\u5e76\u975e\u6307store\u6307\u4ee4\u7684\u987a\u5e8f\uff0c\u800c\u662f\u6307\u5b9e\u9645\u5199\u5165\u5e76\u80fd\u88ab\u8bfb\u53d6\u7684\u987a\u5e8f\uff0c\u610f\u5473\u7740\u65e0\u8bba\u662f\u54ea\u4e2a\u7ebf\u7a0b\uff0c\u90fd\u662f\u76f8\u540c\u7684\u987a\u5e8f\u3002<\/p>\n
                                                                                              \u56e0\u4e3a\u4fdd\u8bc1\u4e86\u4efb\u4f55\u5199\u5165\u90fd\u80fd\u5728\u6240\u6709\u7ebf\u7a0b\u4e2d\u6309\u7167\u76f8\u540c\u987a\u5e8f\u663e\u793a\uff0c\u6240\u4ee5\u907f\u514d\u4e86\u7ebf\u7a0b\u95f4\u7684\u77db\u76fe\uff0c\u8fd9\u662f\u5173\u952e\u3002<\/p>\n
                                                                                              \u7ebf\u6027\u5316<\/h3>\n
                                                                                                \n
                                                                                              • \n
                                                                                                  Sequential Consistency\u306e\u30ec\u30d9\u30eb\u3068\u3001<\/ul>\n<\/li>\n<\/ul>\n
                                                                                                   <\/p>\n
                                                                                                    \u5404read\/write\u304c\u30b0\u30ed\u30fc\u30d0\u30eb\u6642\u523b\u3067\u9806\u5e8f\u3064\u3051\u3089\u308c\u3066\u3044\u308b\u3002<\/ul>\n
                                                                                                    5. \u4e25\u683c\u4e00\u81f4<\/h3>\n
                                                                                                      \n
                                                                                                    • \n
                                                                                                        linearization\u306e\u30ec\u30d9\u30eb\u3068\u3001<\/ul>\n<\/li>\n<\/ul>\n
                                                                                                         <\/p>\n
                                                                                                          \u3042\u308b\u30e1\u30e2\u30ea\u5834\u6240\u3078\u306e\u4efb\u610f\u306eload\u306f\u3001\u305d\u3053\u3078\u306e\u6700\u3082\u65b0\u3057\u3044store\u7d50\u679c\u306b\u306a\u308b\u3002<\/ul>\n
                                                                                                          \u636e\u8bf4\u9664\u4e86\u8fd9\u4e9b\u4e4b\u5916\uff0c\u8fd8\u6709\u8bb8\u591a\u4e0d\u540c\u7684\u4e00\u81f4\u6027\u6c34\u5e73\u3002\u8fd9\u8ba9\u4eba\u5f88\u56f0\u60d1\uff0c\u5982\u679c\u6ca1\u6709\u4ece\u4e8b\u8fd9\u7c7b\u5de5\u4f5c\u7684\u8bdd\u4f1a\u5f88\u5feb\u5fd8\u8bb0\uff0c\u800c\u4e14\u5199\u51fa\u5177\u4f53\u4f8b\u5b50\u4e5f\u5f88\u8017\u65f6\u95f4\uff0c\u6240\u4ee5\u5728\u8fd9\u91cc\u7701\u7565\u6389\u4e86\u3002\u8bf7\u81ea\u884c\u641c\u7d22\u3002<\/p>\n
                                                                                                          \u539f\u5b50\u578b<\/h2>\n
                                                                                                          \u8fd9\u662f\u6807\u9898\u4e2d\u7b2c\u4e09\u4e2a\u672f\u8bed\u7684\u56de\u6536\u3002\u5dee\u4e0d\u591a\u8981\u7ed3\u675f\u4e86\u3002<\/p>\n
                                                                                                          \u5728\u4fdd\u6301\u4e00\u81f4\u6027\u7684\u524d\u63d0\u4e0b\uff0c\u6211\u4eec\u5c06\u6574\u7406\u4e0a\u8ff0\u63aa\u65bd\u4e2d\u4f7f\u7528\u7684\u539f\u5b50\u7c7b\u578b\u3002\u539f\u5b50\u7c7b\u578b\uff08\u53d8\u91cf\uff09\u662f\u6307…<\/p>\n
                                                                                                            \n
                                                                                                          • \n
                                                                                                              \u6700\u65b0\u306estore\u306f\u3001\u4ed6\u306e\u30b9\u30ec\u30c3\u30c9\u304b\u3089\u305d\u306e\u3046\u3061load\u3067\u304d\u308b\u3002\uff08\u53ef\u8996\u6027\uff09<\/ul>\n<\/li>\n<\/ul>\n
                                                                                                               <\/p>\n
                                                                                                                \n
                                                                                                              • \n
                                                                                                                  \u5909\u6570\u306estore\u4e2d\u306b\u3001\u4ed6\u306e\u30b9\u30ec\u30c3\u30c9\u304b\u3089\u4e2d\u9014\u534a\u7aef\u306a\u5024\u304cload\u3055\u308c\u308b\u3053\u3068\u306f\u306a\u3044\u3002\uff08\u539f\u5b50\u6027\uff09<\/ul>\n<\/li>\n<\/ul>\n
                                                                                                                   <\/p>\n
                                                                                                                    memory ordering\u306b\u3088\u308a\u4e00\u8cab\u6027\u304c\u5909\u308f\u308b\u3002\u3053\u308c\u306f\u5bfe\u8c61\u306eAtomic\u5909\u6570\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u306e\u5909\u6570\u304c\u95a2\u4fc2\u3059\u308b\u4ed6\u306e\u5909\u6570\u306e\u53ef\u8996\u6027\u3084Atomic\u6027\u306b\u3082\u95a2\u308f\u308b\u3002<\/ul>\n
                                                                                                                    \u5728Rust\u4e2d\uff0cstd::sync::atomic\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u5982\u4e0b\u7684Atomic\u7c7b\u578b\u3002\u6bcf\u4e2a\u7c7b\u578b\u90fd\u6709\u4e0e\u4e4b\u76f8\u5bf9\u5e94\u7684\u539f\u59cb\u7c7b\u578b\uff0c\u5b83\u4eec\u5728\u5185\u5b58\u4e2d\u5177\u6709\u76f8\u540c\u7684\u4e8c\u8fdb\u5236\u8868\u793a\u3002<\/p>\n
                                                                                                                    AtomicBool == bool<\/p>\n
                                                                                                                    AtomicI8 == i8<\/p>\n
                                                                                                                    AtomicI16 == i16<\/p>\n
                                                                                                                    AtomicI32 == i32<\/p>\n
                                                                                                                    AtomicI64 == i64<\/p>\n
                                                                                                                    AtomicIsize == isize<\/p>\n
                                                                                                                    AtomicPtr == *mut T<\/p>\n
                                                                                                                    AtomicU8 == u8<\/p>\n
                                                                                                                    AtomicU16 == u16<\/p>\n
                                                                                                                    AtomicU32 == u32<\/p>\n
                                                                                                                    AtomicU64 == u64<\/p>\n
                                                                                                                    AtomicUsize == usize<\/p>\n
                                                                                                                    \u5185\u5b58\u6392\u5e8f\uff08\u5c4f\u969c\uff09<\/h2>\n
                                                                                                                    Atomic\u578b\u5728C++\u4e2d\u6709\u5f88\u591a\u65b9\u6cd5\uff0c\u5e76\u4e14\u6bcf\u4e2a\u65b9\u6cd5\u90fd\u63a5\u53d7\u4ee5\u4e0b\u7c7b\u522b\u7684Ordering\u679a\u4e3e\u4f5c\u4e3a\u53c2\u6570\uff0c\u6839\u636eOrdering\u7684\u4e0d\u540c\uff0c\u4f1a\u5f71\u54cd\u5185\u5b58\u7684\u8bfb\u5199\u4e00\u81f4\u6027\u987a\u5e8f\u3002
                                                                                                                    \n\u5185\u5b58\u987a\u5e8f\u4ec5\u4ec5\u63d0\u4f9b\u4e86\u5173\u4e8e\u987a\u5e8f\u7684\u4fdd\u8bc1\uff0c\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u7b80\u5355\u7684\u4e34\u754c\u533a\u3002\u8bf7\u6ce8\u610f\u8fd9\u4e00\u70b9\u3002<\/p>\n
                                                                                                                    #[non_exhaustive]\r\npub enum Ordering {\r\n    Relaxed,\r\n    Release,\r\n    Acquire,\r\n    AcqRel,\r\n    SeqCst,\r\n}\r\n<\/code><\/pre>\n
                                                                                                                    \u6211\u4eec\u5c06\u9010\u4e00\u67e5\u770b\u4e0d\u540c\u7684\u8ba2\u5355\u7c7b\u578b\u3002<\/p>\n
                                                                                                                    \u8f7b\u677e\u81ea\u5728<\/h3>\n
                                                                                                                      \n
                                                                                                                    • \n
                                                                                                                        \u305d\u306eAtomic\u5909\u6570\u81ea\u4f53\u306e\u539f\u5b50\u6027\u3068\u53ef\u8996\u6027\u306e\u307f\u4fdd\u8a3c\u3002<\/ul>\n<\/li>\n<\/ul>\n
                                                                                                                         <\/p>\n
                                                                                                                          \u305d\u306e\u4ed6\u306e\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u306e\u9806\u5e8f\u306b\u95a2\u3057\u3066\u306f\u4f55\u3082\u4fdd\u8a3c\u3057\u306a\u3044\u3002<\/ul>\n
                                                                                                                          \u5728\u5f88\u591a\u60c5\u51b5\u4e0b\uff0c\u53ea\u9700\u653e\u677e\u4e0d\u5fc5\u592a\u8fc7\u62c5\u5fc3\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\u4ec5\u6709\u7684\u4fdd\u8bc1\u662f\u8be5Atomic\u53d8\u91cf\u662f\u539f\u5b50\u7684\uff0c\u5982\u679c\u4e0e\u5176\u4ed6\u53d8\u91cf\u5728\u903b\u8f91\u4e0a\u76f8\u4e92\u4f5c\u7528\uff0c\u7ed3\u679c\u53ef\u80fd\u4f1a\u51fa\u4e4e\u610f\u6599\u3002\u7136\u800c\uff0c\u5982\u679c\u987a\u5e8f\u7a0d\u6709\u524d\u540e\u5e76\u65e0\u5927\u788d\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u8ba4\u4e3a\u53ef\u4ee5\u6545\u610f\u4f7f\u7528\u3002<\/p>\n
                                                                                                                          \u53d1\u5e03 \/ \u83b7\u5f97<\/h3>\n
                                                                                                                          \u5728\u8fdb\u884cstore\u64cd\u4f5c\u65f6\uff0c\u8bf7\u4f7f\u7528Release\uff1b\u5728\u8fdb\u884cload\u64cd\u4f5c\u65f6\uff0c\u8bf7\u4f7f\u7528Acquire\u3002\u5982\u679c\u5728load\u64cd\u4f5c\u4e2d\u4f7f\u7528Release\uff0c\u6216\u8005\u5728store\u64cd\u4f5c\u4e2d\u4f7f\u7528Acquire\uff0c\u5c06\u4f1a\u51fa\u73b0panic\u3002<\/p>\n
                                                                                                                          \u4f5c\u7528\u65b9\u9762\u6765\u770b\uff0c<\/p>\n
                                                                                                                          thread A\u304c\u3001\u3042\u308bAtomic\u5909\u6570\u306b\u5bfe\u3057\u3066\u5024a\u3092Release-store\u3057\u3001<\/p>\n
                                                                                                                          thread B\u304c\u3001\u540c\u3058Atomic\u5909\u6570\u306b\u5bfe\u3057\u3066Acquire-load\u3057\u3066\u5024a\u3092\u89b3\u5bdf\u3067\u304d\u305f\u5834\u5408<\/p>\n
                                                                                                                          thread B\u306f\u3001Acquire-load\u5f8c\u3001thread A\u306b\u304a\u3051\u308b\uff08\u5c11\u306a\u304f\u3068\u3082\uff09Release-store\u4ee5\u524d\u306ewrite\u3092\u89b3\u5bdf\u3067\u304d\u308b\u3002Release-store\u4ee5\u964d\u306ewrite\u3082\u89b3\u5bdf\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/p>\n
                                                                                                                          thread A\u306f\u3001Release-store\u524d\u3001thread B\u306b\u304a\u3051\u308b\uff08\u5c11\u306a\u304f\u3068\u3082\uff09Acquire-load\u4ee5\u964d\u306ewrite\u3092\u89b3\u5bdf\u3067\u304d\u306a\u3044\u3002Acquire-load\u4ee5\u524d\u306ewrite\u306f\u89b3\u5bdf\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/p>\n
                                                                                                                          \u4ece\u611f\u89c9\u4e0a\u6765\u8bf4\uff0cAtomic\u53d8\u91cf\u5c31\u50cf\u4e00\u4e2a\u80fd\u591f\u660e\u786e\u524d\u540e\u5173\u7cfb\u7684\u90ae\u4ef6\u961f\u5217\u3002<\/p>\n
                                                                                                                            \n
                                                                                                                          1. \n
                                                                                                                              \u5f53\u7ebf\u7a0bA\u5411\u961f\u5217\uff08\u539f\u5b50\u53d8\u91cf\uff09\u4e2d\u53d1\u9001\u4fe1\u4ef6\uff08\u503c\uff09\u65f6\uff08\u91ca\u653e\uff09\uff0c<\/ol>\n<\/li>\n<\/ol>\n
                                                                                                                               <\/p>\n
                                                                                                                                \n
                                                                                                                              1. \n
                                                                                                                                  \u5176\u4ed6\u7ebf\u7a0b\u4ece\u961f\u5217\uff08\u539f\u5b50\u53d8\u91cf\uff09\u4e2d\u53d6\u8d70\u4fe1\u4ef6\uff08\u503c\uff09\u540e\uff08\u83b7\u53d6\uff09\uff0c<\/ol>\n<\/li>\n<\/ol>\n
                                                                                                                                   <\/p>\n
                                                                                                                                    \u5728\u91ca\u653e\u4fe1\u4ef6\u4e4b\u524d\u548c\u83b7\u53d6\u4e4b\u540e\u7684\u524d\u540e\u5173\u7cfb\u662f\u88ab\u4fdd\u8bc1\u7684\u3002<\/ol>\n
                                                                                                                                    \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f8b\u5b50\u7684\u6837\u5b50\u3002<\/p>\n
                                                                                                                                    use<\/span> std<\/span>::<\/span>sync<\/span>::{<\/span>\r\n    atomic<\/span>::{<\/span>AtomicI32<\/span>,<\/span> Ordering<\/span>},<\/span>\r\n    Arc<\/span>,<\/span>\r\n};<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> ptr_x<\/span> =<\/span> &<\/span>mut<\/span> 0<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span> as<\/span> usize<\/span>;<\/span>\r\n    let<\/span> atomic_val<\/span> =<\/span> Arc<\/span>::<\/span>new<\/span>(<\/span>AtomicI32<\/span>::<\/span>new<\/span>(<\/span>0<\/span>));<\/span>\r\n\r\n    let<\/span> thread_0<\/span> =<\/span> std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>({<\/span>\r\n        let<\/span> atomic_x<\/span> =<\/span> Arc<\/span>::<\/span>clone<\/span>(<\/span>&<\/span>atomic_val<\/span>);<\/span>\r\n        move<\/span> ||<\/span> {<\/span>\r\n            unsafe<\/span> {<\/span>\r\n                \/\/ data = 1<\/span>\r\n                *<\/span>(<\/span>ptr_x<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span>)<\/span> =<\/span> 1<\/span>;<\/span>\r\n            }<\/span>\r\n            \/\/ Release-store<\/span>\r\n            atomic_x<\/span>.store<\/span>(<\/span>1<\/span>,<\/span> Ordering<\/span>::<\/span>Release<\/span>);<\/span>\r\n        }<\/span>\r\n    });<\/span>\r\n\r\n    let<\/span> thread_1<\/span> =<\/span> std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>({<\/span>\r\n        let<\/span> atomic_x<\/span> =<\/span> Arc<\/span>::<\/span>clone<\/span>(<\/span>&<\/span>atomic_val<\/span>);<\/span>\r\n        move<\/span> ||<\/span> loop<\/span> {<\/span>\r\n            \/\/ busy loop\u958b\u59cb<\/span>\r\n            if<\/span> atomic_x<\/span>.load<\/span>(<\/span>Ordering<\/span>::<\/span>Acquire<\/span>)<\/span> ==<\/span> 1<\/span> {<\/span>\r\n                \/\/ load-Acquire<\/span>\r\n                if<\/span> unsafe<\/span> {<\/span> *<\/span>(<\/span>ptr_x<\/span> as<\/span> *<\/span>const<\/span> i32<\/span>)<\/span> !=<\/span> 1<\/span> }<\/span> {<\/span>\r\n                    unreachable!<\/span>(<\/span>\"\u3053\u3053\u306b\u306f\u5230\u9054\u3057\u306a\u3044\u3002\"<\/span>);<\/span>\r\n                };<\/span>\r\n                break<\/span>;<\/span>\r\n            }<\/span>\r\n        }<\/span>\r\n    });<\/span>\r\n\r\n    thread_0<\/span>.join<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n    thread_1<\/span>.join<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                                                                                                                      \n
                                                                                                                                    • \n
                                                                                                                                        thread_0\u3067Release-store\u3057\u305fAtomic\u5909\u6570\u5024\u3092\u3001thread_1\u304c\u8aad\u307f\u53d6\u308c\u305f\u3068\u3044\u3046\u3053\u3068\u306f\u3001<\/ul>\n<\/li>\n<\/ul>\n
                                                                                                                                         <\/p>\n
                                                                                                                                          \n
                                                                                                                                        • \n
                                                                                                                                            thread_0\u3067\u306eRelease-store\u4ee5\u524d\u306e\u66f8\u304d\u8fbc\u307f\u304c\u5168\u3066\u8aad\u307f\u53d6\u308c\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
                                                                                                                                             <\/p>\n
                                                                                                                                              \u3064\u307e\u308athread_1\u306fptr_x\u3078\u306e\u66f8\u304d\u8fbc\u307f\u3092\u8aad\u3081\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u306e\u3067\u3001ptr_x\u306f\u5fc5\u305a1\u3002<\/ul>\n
                                                                                                                                              \u6d88\u8d39<\/h3>\n
                                                                                                                                              \u53ea\u6709\u5728\u8ba1\u7b97\u6307\u9488\u65f6\uff0c\u624d\u4f1a\u53d1\u751fAcquire\u7684\u52a8\u4f5c\u3002\u5728C++\u4e2d\u4f3c\u4e4e\u6bd4Acquire\u66f4\u5feb\uff0c\u4f46\u5728rust\u7684std\u5e93\u4e2d\u5e76\u4e0d\u5b58\u5728\uff0c\u800c\u4e14\u5982\u679c\u5728rust\u4e2d\u8fc7\u591a\u5730\u4f7f\u7528\u539f\u751f\u6307\u9488\uff0c\u4eba\u4eec\u4f1a\u62c5\u5fc3\u662f\u5426\u5b89\u5168\uff0c\u5e76\u4e14\u5373\u4f7f\u4f7f\u7528\u5e93\u6765\u5b9e\u73b0\uff0c\u4e5f\u62c5\u5fc3\u4f1a\u4e0d\u5c0f\u5fc3\u4f7f\u7528\u9519\u8bef\u3002\u7701\u7565\u3002<\/p>\n
                                                                                                                                              \u6536\u8d2d\u4e0e\u5408\u5e76<\/h3>\n
                                                                                                                                              \u5728\u52a0\u8f7d\u65f6\uff0c\u53ef\u4ee5\u5b9e\u73b0\u83b7\u53d6\uff08Acquire\uff09\u7684\u6548\u679c\uff0c\u5728\u5b58\u50a8\u65f6\uff0c\u53ef\u4ee5\u5b9e\u73b0\u91ca\u653e\uff08Release\uff09\u7684\u6548\u679c\u3002\u5b83\u7528\u4e8e\u6267\u884c\u8bfb\u53d6\u4fee\u6539\u5199\u5165\u64cd\u4f5c\uff08\u5982compare_and_exchange\u6216fetch_add\uff09\u65f6\u7684\u52a0\u8f7d\u548c\u5b58\u50a8\u3002<\/p>\n
                                                                                                                                              \u4f8b\u5982\uff0c\u5bf9\u4e8e\u53ef\u80fd\u5931\u8d25\uff08\u6839\u636e\u5199\u5165\u6761\u4ef6\uff09\u7684\u8bfb-\u4fee\u6539-\u5199\u64cd\u4f5c\uff0c\u5982compare_and_exchange\uff0c\u6709Ordering\u53c2\u6570\u6765\u8868\u793a\u6210\u529f\u60c5\u51b5\u4e0b\u7684Ordering\u548c\u5931\u8d25\u60c5\u51b5\u4e0b\u7684Ordering\u3002\u6210\u529f\u60c5\u51b5\u4e0b\u7684Ordering\u4e0e\u5f53\u524d\u503c\u7684\u6bd4\u8f83\u6210\u529f\uff0c\u800c\u5931\u8d25\u60c5\u51b5\u4e0b\u7684Ordering\u8868\u793a\u64cd\u4f5c\u672a\u6210\u529f\u3002<\/p>\n
                                                                                                                                              \u8fd9\u662f\u4e00\u4e2a\u4f8b\u5b50\u7684\u5199\u6cd5\u3002<\/p>\n
                                                                                                                                              use<\/span> std<\/span>::<\/span>sync<\/span>::<\/span>atomic<\/span>::{<\/span>AtomicU8<\/span>,<\/span> Ordering<\/span>};<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    static<\/span> COUNT<\/span>:<\/span> AtomicU8<\/span> =<\/span> AtomicU8<\/span>::<\/span>new<\/span>(<\/span>0<\/span>);<\/span>\r\n    let<\/span> ptr_0<\/span> =<\/span> &<\/span>mut<\/span> 0<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span> as<\/span> usize<\/span>;<\/span>\r\n    let<\/span> ptr_1<\/span> =<\/span> &<\/span>mut<\/span> 0<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span> as<\/span> usize<\/span>;<\/span>\r\n\r\n    let<\/span> thread_0<\/span> =<\/span> std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>(<\/span>move<\/span> ||<\/span> {<\/span>\r\n        unsafe<\/span> {<\/span> *<\/span>(<\/span>ptr_0<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span>)<\/span> =<\/span> 1<\/span> };<\/span>\r\n        if<\/span> COUNT<\/span>.fetch_add<\/span>(<\/span>1<\/span>,<\/span> Ordering<\/span>::<\/span>AcqRel<\/span>)<\/span> ==<\/span> 1<\/span> {<\/span>\r\n            println!<\/span>(<\/span>\"thread_0 wins.\"<\/span>);<\/span>\r\n            assert_eq!<\/span>(<\/span>unsafe<\/span> {<\/span> *<\/span>(<\/span>ptr_1<\/span> as<\/span> *<\/span>const<\/span> i32<\/span>)<\/span> },<\/span> 1<\/span>);<\/span>\r\n        }<\/span>\r\n    });<\/span>\r\n\r\n    let<\/span> thread_1<\/span> =<\/span> std<\/span>::<\/span>thread<\/span>::<\/span>spawn<\/span>(<\/span>move<\/span> ||<\/span> {<\/span>\r\n        unsafe<\/span> {<\/span> *<\/span>(<\/span>ptr_1<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span>)<\/span> =<\/span> 1<\/span> };<\/span>\r\n        if<\/span> COUNT<\/span>.fetch_add<\/span>(<\/span>1<\/span>,<\/span> Ordering<\/span>::<\/span>AcqRel<\/span>)<\/span> ==<\/span> 1<\/span> {<\/span>\r\n            println!<\/span>(<\/span>\"thread_1 wins.\"<\/span>);<\/span>\r\n            assert_eq!<\/span>(<\/span>unsafe<\/span> {<\/span> *<\/span>(<\/span>ptr_0<\/span> as<\/span> *<\/span>const<\/span> i32<\/span>)<\/span> },<\/span> 1<\/span>);<\/span>\r\n        }<\/span>\r\n    });<\/span>\r\n\r\n    thread_0<\/span>.join<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n    thread_1<\/span>.join<\/span>()<\/span>.unwrap<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                                                                                                                              \u901a\u8fc7AcqRel\uff0c\u5f53\u4e00\u65b9\u7684\u7ebf\u7a0b\u5bf9Atomic\u53d8\u91cf\u8fdb\u884c\u7684\u66f4\u6539\u53ef\u4ee5\u88ab\u53e6\u4e00\u65b9\u7684\u7ebf\u7a0b\u8bfb\u53d6\u65f6\uff0c\u8be5\u8fdb\u884c\u66f4\u6539\u7684\u7ebf\u7a0b\u4e4b\u524d\u7684\u6240\u6709\u5199\u5165\u90fd\u53ef\u4ee5\u88ab\u8bfb\u53d6\u3002
                                                                                                                                              \n\u4e5f\u5c31\u662f\u8bf4\uff0c\u65e0\u8bba\u54ea\u4e2a\u7ebf\u7a0b\u66f4\u665a\uff0c\u90fd\u4fdd\u8bc1\u5bf9\u65b9\u53ef\u4ee5\u8bfb\u53d6Atomic\u53d8\u91cf\u7684\u4fee\u6539\u524d\u7684\u503c\u3002
                                                                                                                                              \n\u6b64\u5916\uff0c\u5fc5\u5b9a\u53ea\u6709\u5176\u4e2d\u4e00\u65b9\u4f1a\u6267\u884cif\u8bed\u53e5\u5185\u7684\u5904\u7406\u3002\u4e0d\u4f1a\u53d1\u751f\u4e24\u4e2a\u90fd\u4e0d\u5904\u7406\u6216\u4e24\u4e2a\u90fd\u5904\u7406\u7684\u60c5\u51b5\u3002<\/p>\n
                                                                                                                                              \u987a\u5e8f\u4e00\u81f4<\/h3>\n
                                                                                                                                              \u5728AcqRel\u7684\u57fa\u7840\u4e0a\uff0c\u4fdd\u8bc1\u4e86\u591a\u7ebf\u7a0b\u5bf9\u591a\u4e2a\u539f\u5b50\u53d8\u91cf\u7684\u4fee\u6539\u80fd\u6309\u7167\u4e00\u81f4\u7684\u987a\u5e8f\u89c2\u5bdf\u5230\u3002
                                                                                                                                              \n\u6362\u53e5\u8bdd\u8bf4\uff0c\u5728Release\/Acquire\uff08AcqRel\uff09\u4e2d\uff0c\u5f53\u591a\u4e2a\u7ebf\u7a0b\u5bf9\u591a\u4e2a\u539f\u5b50\u53d8\u91cf\u8fdb\u884c\u4fee\u6539\u65f6\uff0c\u6709\u53ef\u80fd\u5728\u7ebf\u7a0b\u4e4b\u95f4\u5448\u73b0\u4e0d\u540c\u7684\u987a\u5e8f\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u53ea\u4f7f\u7528\u4e00\u4e2a\u539f\u5b50\u53d8\u91cf\uff0c\u6216\u8005\u4f7f\u7528\u591a\u4e2a\u539f\u5b50\u53d8\u91cf\u4f46\u5f7c\u6b64\u65e0\u5173\uff0c\u5219\u8fd9\u662f\u4e0d\u5fc5\u8981\u7684\u3002<\/p>\n
                                                                                                                                              \u5982\u679c\u4f60\u611f\u5230\u56f0\u60d1\uff0c\u6709\u65f6\u4f1a\u5199\u4e0a\u4f7f\u7528SeqCst\uff0c\u4f46\u8fd9\u610f\u5473\u7740\u5f88\u96be\u7406\u89e3\uff0c\u5e76\u4e14\u6b63\u5728\u8fdb\u884c\u76f8\u5f53\u590d\u6742\u7684\u64cd\u4f5c\u3002\u8981\u5c0f\u5fc3\u3002<\/p>\n
                                                                                                                                              \u6805\u680f (zh\u00e0<\/h2>\n
                                                                                                                                              \u5728\u4e0e\u539f\u5b50\u53d8\u91cf\u7ec4\u5408\u4f7f\u7528\u7684\u60c5\u51b5\u4e0b\uff0c\u6709\u4e00\u4e2a\u540d\u4e3a”memory fence”\u7684\u4e1c\u897f\u3002<\/p>\n
                                                                                                                                              \u5728\u6307\u5b9a\u4e86Release\u3001Acquire\u3001AcqRel\u548cSeqCst\u7684Atomic\u53d8\u91cf\u547d\u4ee4\u4e2d\uff0c
                                                                                                                                              \n\u53ef\u4ee5\u7528\u6307\u5b9a\u4e86relaxed\u7684Atomic\u53d8\u91cf\u547d\u4ee4\u548c\u4f7f\u7528Release\u3001Acquire\u3001AcqRel\u3001SeqCst fence\u6765\u66ff\u4ee3\u3002
                                                                                                                                              \n\u4ee5\u524d\u6211\u4e00\u76f4\u5728\u601d\u8003\uff0c\u5373\u4f7f\u53ea\u7528Atomic\u53d8\u91cf\u4e5f\u80fd\u5b9e\u73b0\uff0c\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8fd8\u9700\u8981Atomic\u53d8\u91cf\u4e4b\u5916\u7684fence\u6709\u5b58\u5728\u7684\u610f\u4e49\u5462\uff1f\u4f46\u662f\u901a\u8fc7\u518d\u6b21\u89c2\u5bdf\u4ee3\u7801\u4f8b\u5b50\uff0c\u53d1\u73b0\u5728relaxed\u5faa\u73af\u540e\u9762\u63d2\u5165\u4e86fence\uff0c\u6211\u7a0d\u5fae\u6709\u70b9\u660e\u767d\u4e86\u3002
                                                                                                                                              \n\u770b\u8d77\u6765\uff0c\u4fdd\u8bc1\u4e86\u6240\u6709\u524d\u540e\u7684\u539f\u5b50\u64cd\u4f5c\u7684\u987a\u5e8f\u3002<\/p>\n
                                                                                                                                              \u989d\u5916\u5185\u5bb9\uff1a\u7ebf\u7a0b\u7684join()<\/h2>\n
                                                                                                                                              \u4ee5\u539f\u751f\u7684\u4e2d\u6587\u65b9\u5f0f\u6539\u8ff0\u5982\u4e0b\uff1a\u53ef\u4ee5\u67e5\u770bRust\u7684\u7ebf\u7a0bjoin\u65b9\u6cd5\u7684\u8bf4\u660e\uff0c\u5982\u4e0b\u6240\u8ff0\uff0c\u4fdd\u8bc1\u4e86\u5728\u8c03\u7528thread\u7684join()\u65b9\u6cd5\u4e4b\u524d\u548c\u4e4b\u540e\u7684\u987a\u5e8f\u3002<\/p>\n
                                                                                                                                              \u5c31\u539f\u5b50\u5185\u5b58\u987a\u5e8f\u800c\u8a00\uff0c\u76f8\u5173\u7ebf\u7a0b\u7684\u5b8c\u6210\u4e0e\u6b64\u51fd\u6570\u7684\u8fd4\u56de\u540c\u6b65\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u8be5\u7ebf\u7a0b\u6267\u884c\u7684\u6240\u6709\u64cd\u4f5c\u90fd\u53d1\u751f\u5728join\u8fd4\u56de\u4e4b\u540e\u7684\u6240\u6709\u64cd\u4f5c\u4e4b\u524d\u3002<\/p><\/blockquote>\n
                                                                                                                                              \u6700\u540e\uff08\u7684\u4e8b\u60c5\/\u7ed3\u679c\uff09<\/h2>\n
                                                                                                                                              \u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u666e\u901a\u7684\u7f51\u7edc\u5de5\u7a0b\u5e08\u4e0d\u4f1a\u5f3a\u884c\u4f7f\u7528Ordering\u548cfence\uff0c\u800c\u662f\u7ecf\u5e38\u4ee5\u539f\u5b50\u64cd\u4f5c\u7684\u5f62\u5f0f\u4f7f\u7528Atomic\u3002\u5b9e\u9645\u4e0a\uff0cMutex\u53ef\u4ee5\u5b9e\u73b0\u76f8\u540c\u7684\u529f\u80fd\uff0c\u6240\u4ee5\u5373\u4f7f\u901a\u8fc7\u4f7f\u7528Mutex\u5bf9\u4ee3\u7801\u8fdb\u884c\u5fae\u79d2\u7ea7\u522b\u7684\u4f18\u5316\uff0c\u7528\u6237\u751a\u81f3\u662f\u540c\u4e00\u5bb6\u516c\u53f8\u7684\u4eba\u5458\u4e5f\u4e0d\u4f1a\u6ce8\u610f\u5230\u8fd9\u4e2a\u53d8\u5316\u3002<\/p>\n
                                                                                                                                              \u6b64\u5916\uff0c\u5982\u679c\u662f\u539f\u4f5c\u8005\u81ea\u5df1\u8fdb\u884c\u7ef4\u62a4\u7684\u8bdd\uff0c\u5c31\u6ca1\u6709\u95ee\u9898\u3002\u4f46\u662f\uff0c\u5f53\u5176\u4ed6\u4eba\u9700\u8981\u7ef4\u62a4\u9700\u8981\u4f7f\u7528SeqCst\u7ea7\u522b\u7684\u4ee3\u7801\u65f6\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53cd\u800c\u53ef\u80fd\u4f1a\u5f15\u5165\u9519\u8bef\u3002\u5f53\u4f60\u5173\u6ce8\u4e00\u4e9b\u91cd\u8981\u7684\u9ad8\u901f\u5e93\u7684git\u65f6\uff0c\u4f60\u4f1a\u7ecf\u5e38\u770b\u5230\u6709\u5173Ordering\u7684\u8ba8\u8bba\u3002<\/p>\n
                                                                                                                                              \u4f7f\u7528Atomic\/CAS\u7684\u539f\u56e0\u4e0e\u4e4b\u524d\u63d0\u5230\u7684\u8ba1\u6570\u5668\u793a\u4f8b\u76f8\u540c\uff0c\u56e0\u4e3a\u5b83\u7684\u901f\u5ea6\u975e\u5e38\u5feb\u3002\u867d\u7136\u6709\u70b9\u8fc7\u65f6\uff0c\u4f46\u5b83\u7684\u901f\u5ea6\u5728\u8fd9\u4e2a\u56fe\u8868\u4e0a\u662f\u4ee5Atomic\/CAS\u7684\u901f\u5ea6\u6765\u8861\u91cf\u7684\uff0c\u800cMutex\u548c\u6d88\u606f\u961f\u5217\/\u4f20\u9012\u7684\u901f\u5ea6\u5219\u662f\u6162100\u500d\u6c34\u5e73\uff0c\u56e0\u6b64\u6ca1\u6709\u5728\u6b64\u56fe\u8868\u4e2d\u663e\u793a\u3002<\/p>\n
                                                                                                                                              \u90a3\u4e9b\u751f\u6d3b\u5728\u5fae\u79d2\u548c\u7eb3\u79d2\u4e16\u754c\u4e2d\u7684\u4eba\u4eec\u901a\u5e38\u4f1a\u4f7f\u7528\u5e93\u3001\u6e38\u620f\u548c\u6570\u636e\u5904\u7406\u7b49\u3002\u5982\u679c\u7528\u666e\u901a\u7684Mutex\u6765\u7f16\u5199\u8ffd\u6c42\u901f\u5ea6\u7684\u5e93\uff0c\u53ef\u80fd\u4f1a\u6536\u5230\u5176\u4ed6\u4eba\u63d0\u51fa\u7528Atomic\/fence\u66ff\u4ee3\u7684pull request\u3002<\/p>\n
                                                                                                                                              \u6211\u5bf9Go\u5e76\u4e0d\u5341\u5206\u719f\u6089\uff0c\u4f46\u4ece\u7a0d\u5fae\u641c\u7d22\u7684\u7ed3\u679c\u6765\u770b<\/p>\n
                                                                                                                                              \u4e0d\u8981\u901a\u8fc7\u5171\u4eab\u5185\u5b58\u8fdb\u884c\u6c9f\u901a\uff0c\u800c\u662f\u901a\u8fc7\u6c9f\u901a\u6765\u5171\u4eab\u5185\u5b58\u3002<\/p><\/blockquote>\n
                                                                                                                                              \u56e0\u4e3a\u8fd9\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u3001\u503e\u5411\u4e8e\u6709\u4e3b\u89c1\u7684\u653f\u7b56\uff0c\u6240\u4ee5\u4f3c\u4e4e\u4e0d\u4f1a\u8fdb\u884c\u76f4\u63a5\u64cd\u4f5c\u3002\u62b1\u6b49\u3002<\/p>\n
                                                                                                                                              \u5728\u4e4b\u524d\u7684\u89e3\u91ca\u4e2d\u6211\u63d0\u5230\u4e86\u4e0d\u7ecf\u5e38\u4f7f\u7528\u7684\u4e8b\u60c5\uff0c\u4f46\u4eba\u751f\u5b9e\u9645\u4e0a\u662f\u76f8\u5f53\u6f2b\u957f\u7684\u3002\u5373\u4f7f\u662f\u666e\u901a\u7684\u7f51\u7edc\u5de5\u7a0b\u5e08\uff0c\u8fdf\u65e9\u90fd\u4f1a\u9762\u4e34\u8fd9\u6837\u7684\u6289\u62e9\uff1a\u8981\u4e48\u4ee5\u9ad8\u901f\u4e14\u4e0d\u82b1\u8d39\u5927\u91cf\u91d1\u94b1\u7684\u65b9\u5f0f\u5904\u7406\u6d77\u91cf\u7684\u4efb\u52a1\uff0c\u5426\u5219\u516c\u53f8\u5c06\u4f1a\u5012\u95ed\uff0c\u6216\u8005\u6b65\u5165\u7f13\u6162\u7684\u6b7b\u4ea1\u4e4b\u8def\u3002<\/p>\n
                                                                                                                                              \u5728\u9762\u5bf9\u8fd9\u6837\u56f0\u96be\u7684\u60c5\u51b5\u65f6\uff0c\u6df1\u547c\u5438\u540e\uff0c\u5982\u679c\u6ca1\u81ea\u4fe1\u7684\u8bdd\uff0c\u5c31\u7528Mutex\u6216ReaderWriterLock\u6765\u5b9e\u73b0\u957f\u65f6\u95f4\u7684\u9501\u5b9a\uff0c\u4ee5\u7f16\u5199\u5b89\u5168\u7684\u4ee3\u7801\u3002\u4e0e\u5076\u5c14\u51fa\u73b0\u5947\u602a\u7684\u9519\u8bef\u76f8\u6bd4\uff0c\u8fd9\u6837\u505a\u66f4\u597d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                                                                                                                                              \u8fd9\u662f\u5411\u96f6\u552e\u4eba\u5de5\u667a\u80fdx Advent Calendar 2022\u7684\u7b2c23\u5929\u8d21\u732e\u3002 \u524d\uff1a\u7b2c22\u5929\uff1a\u5173\u4e8e\u4f7f\u7528@tak […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50607","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u7ebf\u7a0b\u3001\u4e00\u81f4\u6027\u548c\u539f\u5b50\u6027 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u7ebf\u7a0b\u3001\u4e00\u81f4\u6027\u548c\u539f\u5b50\u6027\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u7ebf\u7a0b\u3001\u4e00\u81f4\u6027\u548c\u539f\u5b50\u6027\" \/>\n<meta property=\"og:description\" content=\"\u8fd9\u662f\u5411\u96f6\u552e\u4eba\u5de5\u667a\u80fdx Advent Calendar 2022\u7684\u7b2c23\u5929\u8d21\u732e\u3002 \u524d\uff1a\u7b2c22\u5929\uff1a\u5173\u4e8e\u4f7f\u7528@tak […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u7ebf\u7a0b\u3001\u4e00\u81f4\u6027\u548c\u539f\u5b50\u6027\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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