{"id":201,"date":"2022-02-17T16:48:22","date_gmt":"2022-02-17T08:48:22","guid":{"rendered":"http:\/\/139.224.63.49\/?p=201"},"modified":"2022-02-17T16:48:22","modified_gmt":"2022-02-17T08:48:22","slug":"%e4%b8%80%e4%b8%aa%e8%ae%b2%e8%a7%a3lock%e7%9a%84%e8%a7%86%e9%a2%91","status":"publish","type":"post","link":"http:\/\/iamnear.top\/?p=201","title":{"rendered":"\u4e00\u4e2a\u8bb2\u89e3lock\u7684\u89c6\u9891"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.infoq.com\/presentations\/go-locks\/\">https:\/\/www.infoq.com\/presentations\/go-locks\/<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.zhihu.com\/question\/332113890\">https:\/\/www.zhihu.com\/question\/332113890<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u6240\u8c13\u7684lock\uff0c\u5c31\u662f\u4ee5\u5185\u5b58\u4e2d\u7684\u67d0\u4e2a\u53d8\u91cf\u4f5c\u4e3a\u6807\u8bb0\uff0c\u6765\u8bb0\u5f55\u76ee\u524d\u9501\u7684\u72b6\u6001\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u5e76\u53d1\u8bbf\u95ee\u7684\u5b58\u5728\uff0c\u5bf9\u9501\u53d8\u91cf\u7684\u4fee\u6539\u4e0d\u80fd\u91c7\u7528read-modify-write\u65b9\u6cd5\uff0c\u4f46\u662f\u5728read\u548cwrite\u4e2d\u95f4\u8fd9\u6bb5\u65f6\u95f4\uff0c\u53d8\u91cf\u53ef\u80fd\u88ab\u5176\u4ed6cpu\u8bbf\u95ee\u5e76\u64cd\u4f5c\uff0c\u4ece\u800c\u5bfc\u81f4\u4e0d\u4e00\u81f4\u3002\u56e0\u6b64\u9700\u8981\u539f\u5b50\u64cd\u4f5c\uff0c\u6765\u4fdd\u8bc1\u4e00\u81f4\u6027\u3002\u5e38\u89c1\u539f\u5b50\u64cd\u4f5c\u6709CAS\uff08compare and swap\uff09\uff0cFetch And Add\uff0cExchange\u7b49\uff0c\u89c1https:\/\/zhuanlan.zhihu.com\/p\/160185717<\/p>\n\n\n\n<p>\u4fdd\u8bc1\u4e86\u6307\u4ee4\u7684\u539f\u5b50\u6027\u4ee5\u540e\uff0c\u8fd8\u8981\u4fdd\u8bc1\u6307\u4ee4\u7684\u987a\u5e8f\u4e0d\u88ab\u6253\u4e71\u3002\u8fd9\u91cc\u6d89\u53ca\u5230\u7f16\u8bd1\u5668\u7684\u6307\u4ee4\u91cd\u6392\u548ccpu\u7684\u6307\u4ee4\u91cd\u6392\u3002\u540c\u6837\u9700\u8981\u4f7f\u7528\u5bf9\u5e94\u5e73\u53f0\u7684\u76f8\u5173\u6307\u4ee4(x86\u4e0b\u7684\u662flfence,mfence\u7b49)\u3002<\/p>\n\n\n\n<p>\u4fdd\u8bc1\u4e86\u8fd9\u4e24\u70b9\uff0c\u5c31\u53ef\u4ee5\u6709\u4e00\u4e2a\u7b80\u5355\u7684\u81ea\u65cb\u9501\u4e86\u3002\u9664\u4e86\u81ea\u65cb\u9501\uff0c\u8fd8\u6709\u4e92\u65a5\u9501\u3002\u4e24\u8005\u7684\u533a\u522b\u5c31\u662f\u5728\u53d1\u73b0\u9501\u5df2\u88ab\u5360\u7528\u4ee5\u540e\u9009\u62e9\u600e\u4e48\u64cd\u4f5c\u3002\u81ea\u65cb\u9501\u9009\u62e9\u7528cpu\u5fd9\u7b49\uff0c\u4e92\u65a5\u9501\u9009\u62e9\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u5728\u9501\u72b6\u6001\u53d1\u751f\u53d8\u5316\u7684\u65f6\u5019\u8c03\u5ea6\u81ea\u5df1\uff0c\u7136\u540e\u81ea\u5df1\u4e3b\u52a8\u653e\u5f03\u6267\u884c\u6743\uff0c\u8ba9\u64cd\u4f5c\u7cfb\u7edf\u8c03\u5ea6\u5176\u4ed6\u8fdb\u7a0b\/\u7ebf\u7a0b\u6267\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.infoq.com\/presentations\/go-locks\/ http&hellip; <a href=\"http:\/\/iamnear.top\/?p=201\" class=\"more-link read-more\" rel=\"bookmark\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">\u4e00\u4e2a\u8bb2\u89e3lock\u7684\u89c6\u9891<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-201","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"h-entry","9":"h-as-article"},"_links":{"self":[{"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/posts\/201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/iamnear.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=201"}],"version-history":[{"count":1,"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/posts\/201\/revisions"}],"predecessor-version":[{"id":202,"href":"http:\/\/iamnear.top\/index.php?rest_route=\/wp\/v2\/posts\/201\/revisions\/202"}],"wp:attachment":[{"href":"http:\/\/iamnear.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/iamnear.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=201"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/iamnear.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}