{"id":120723,"date":"2026-11-01T05:56:32","date_gmt":"2026-10-31T21:56:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/120723.html"},"modified":"2026-11-01T05:56:32","modified_gmt":"2026-10-31T21:56:32","slug":"jvm%e8%a7%84%e8%8c%83%e5%ad%a6%e4%b9%a0%e6%80%bb%e7%bb%93%ef%bc%9aclass%e6%89%a7%e8%a1%8c%e6%80%a7%e8%83%bd%e5%b7%ae%e5%bc%82","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/120723.html","title":{"rendered":"JVM\u89c4\u8303\u5b66\u4e60\u603b\u7ed3\uff1aclass\u6267\u884c\u6027\u80fd\u5dee\u5f02"},"content":{"rendered":"<\/p>\n<h4>JVM\u89c4\u8303\u5b66\u4e60\u603b\u7ed3-class\u6267\u884c\u6027\u80fd\u5dee\u5f02<\/h4>\n<ul>\n<li>\u524d\u8a00<\/li>\n<li>\u4e3a\u4ec0\u4e48\u76f8\u540c\u7684 Java \u7a0b\u5e8f\u5728\u4e0d\u540c JVM\u3001\u4e0d\u540c CPU \u67b6\u6784\u4e0a&#xff0c;\u6267\u884c\u8def\u5f84\u4e0e\u6027\u80fd\u53ef\u80fd\u4e0d\u540c&#xff1f;<\/li>\n<li>\n<ul>\n<li>\u4e00\u3001\u6838\u5fc3\u7ed3\u8bba&#xff1a;\u8de8\u5e73\u53f0\u517c\u5bb9&#xff0c;\u4e0d\u4ee3\u8868\u5e95\u5c42\u6267\u884c\u8fc7\u7a0b\u5b8c\u5168\u76f8\u540c<\/li>\n<li>\u4e8c\u3001\u539f\u56e0\u4e00&#xff1a;JVMS \u53ea\u89c4\u5b9a\u6267\u884c\u8bed\u4e49&#xff0c;\u4e0d\u89c4\u5b9a\u552f\u4e00\u7684\u6267\u884c\u5b9e\u73b0<\/li>\n<li>\u4e09\u3001\u539f\u56e0\u4e8c&#xff1a;\u4e0d\u540c JVM \u4f1a\u9009\u62e9\u4e0d\u540c\u7684\u8fd0\u884c\u4e0e\u7f16\u8bd1\u8def\u5f84<\/li>\n<li>\n<ul>\n<li>1. \u89e3\u91ca\u6267\u884c\u4e0e JIT \u7f16\u8bd1\u7684\u533a\u522b<\/li>\n<li>2. \u4e3a\u4ec0\u4e48\u540c\u4e00\u4e2a\u65b9\u6cd5\u53ef\u80fd\u7ecf\u5386\u591a\u6761\u6267\u884c\u8def\u5f84&#xff1f;<\/li>\n<\/ul>\n<\/li>\n<li>\u56db\u3001\u539f\u56e0\u4e09&#xff1a;\u4e0d\u540c CPU \u67b6\u6784\u9700\u8981\u4e0d\u540c\u7684\u673a\u5668\u6307\u4ee4<\/li>\n<li>\n<ul>\n<li>1. \u4ece\u5185\u5b58\u5c4f\u969c\u770b\u67b6\u6784\u5dee\u5f02<\/li>\n<li>2. \u9664\u5185\u5b58\u6392\u5e8f\u5916&#xff0c;\u8fd8\u6709\u54ea\u4e9b\u786c\u4ef6\u5dee\u5f02&#xff1f;<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001\u539f\u56e0\u56db&#xff1a;\u5783\u573e\u56de\u6536\u3001\u5bf9\u8c61\u5e03\u5c40\u548c\u8fd0\u884c\u65f6\u914d\u7f6e\u4e5f\u4f1a\u6539\u53d8\u6027\u80fd<\/li>\n<li>\u516d\u3001\u5fc5\u987b\u533a\u5206&#xff1a;\u6027\u80fd\u4e0d\u540c&#xff0c;\u4e0d\u7b49\u4e8e\u7a0b\u5e8f\u8bed\u4e49\u53ef\u4ee5\u968f\u610f\u4e0d\u540c<\/li>\n<li>\u4e03\u3001\u7cfb\u7edf\u5de5\u7a0b\u5e08\u5e94\u8be5\u5982\u4f55\u9a8c\u8bc1\u8fd9\u4e9b\u5dee\u5f02&#xff1f;<\/li>\n<li>\n<ul>\n<li>\u7b2c\u4e00\u6b65&#xff1a;\u5efa\u7acb\u53ef\u6bd4\u8f83\u7684\u8fd0\u884c\u73af\u5883<\/li>\n<li>\u7b2c\u4e8c\u6b65&#xff1a;\u89c2\u5bdf\u89e3\u91ca\u6267\u884c\u4e0e JIT \u7f16\u8bd1<\/li>\n<li>\u7b2c\u4e09\u6b65&#xff1a;\u68c0\u67e5\u751f\u6210\u7684\u673a\u5668\u7801\u4e0e CPU \u884c\u4e3a<\/li>\n<li>\u7b2c\u56db\u6b65&#xff1a;\u91c7\u7528\u5408\u9002\u7684\u57fa\u51c6\u6d4b\u8bd5\u65b9\u6cd5<\/li>\n<\/ul>\n<\/li>\n<li>\u516b\u3001\u6700\u7ec8\u5b66\u4e60\u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h2>\u524d\u8a00<\/h2>\n<p>\u672c\u6587\u65e8\u5728\u8bb0\u5f55\u8fd1\u671f\u7814\u8bfbJava\u6e90\u7801\u7684\u5b66\u4e60\u5fc3\u5f97\u4e0e\u7591\u96be\u95ee\u9898\u3002\u7531\u4e8e\u4e2a\u4eba\u7406\u89e3\u6c34\u5e73\u6709\u9650&#xff0c;\u6587\u4e2d\u5185\u5bb9\u96be\u514d\u5b58\u5728\u758f\u6f0f&#xff0c;\u6073\u8bf7\u8bfb\u8005\u4e0d\u541d\u6307\u6b63\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u76f8\u540c\u7684 Java \u7a0b\u5e8f\u5728\u4e0d\u540c JVM\u3001\u4e0d\u540c CPU \u67b6\u6784\u4e0a&#xff0c;\u6267\u884c\u8def\u5f84\u4e0e\u6027\u80fd\u53ef\u80fd\u4e0d\u540c&#xff1f;<\/h2>\n<h3>\u4e00\u3001\u6838\u5fc3\u7ed3\u8bba&#xff1a;\u8de8\u5e73\u53f0\u517c\u5bb9&#xff0c;\u4e0d\u4ee3\u8868\u5e95\u5c42\u6267\u884c\u8fc7\u7a0b\u5b8c\u5168\u76f8\u540c<\/h3>\n<p>\u4ece Java \u865a\u62df\u673a\u89c4\u8303&#xff08;JVMS&#xff09;\u7684\u89d2\u5ea6\u770b&#xff0c;Java \u7684\u8de8\u5e73\u53f0\u80fd\u529b\u5efa\u7acb\u5728\u4e00\u4e2a\u5173\u952e\u539f\u5219\u4e0a&#xff1a;\u4e0d\u540c JVM \u53ef\u4ee5\u91c7\u7528\u4e0d\u540c\u7684\u5185\u90e8\u5b9e\u73b0&#xff0c;\u4f46\u5fc5\u987b\u9075\u5b88\u89c4\u8303\u6240\u5b9a\u4e49\u7684\u5916\u90e8\u8bed\u4e49\u3002<\/p>\n<p>JVMS \u5b9a\u4e49\u4e86 Class \u6587\u4ef6\u683c\u5f0f\u3001\u5b57\u8282\u7801\u6307\u4ee4\u3001\u8fd0\u884c\u65f6\u6570\u636e\u533a\u53ca\u6307\u4ee4\u6267\u884c\u8bed\u4e49&#xff0c;\u5374\u4e0d\u8981\u6c42\u6240\u6709 JVM \u4f7f\u7528\u76f8\u540c\u7684\u5bf9\u8c61\u5e03\u5c40\u3001\u5783\u573e\u56de\u6536\u7b97\u6cd5\u6216\u673a\u5668\u7801\u751f\u6210\u65b9\u6848\u3002\u89c4\u8303\u8fd8\u660e\u786e\u5141\u8bb8 JVM \u5b9e\u73b0\u8005\u6839\u636e\u4e0d\u540c\u5e73\u53f0\u548c\u6027\u80fd\u76ee\u6807\u8fdb\u884c\u4f18\u5316\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u7cfb\u7edf\u5de5\u7a0b\u5e08\u9700\u8981\u533a\u5206\u4e09\u4e2a\u5c42\u9762&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261031215630-6ae6640ed43ae.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u6700\u91cd\u8981\u7684\u8ba4\u8bc6&#xff1a;\u76f8\u540c\u7684 Java \u5b57\u8282\u7801&#xff0c;\u5e76\u4e0d\u610f\u5473\u7740\u76f8\u540c\u7684\u673a\u5668\u6307\u4ee4&#xff1b;\u76f8\u540c\u7684\u673a\u5668\u6307\u4ee4&#xff0c;\u4e5f\u4e0d\u610f\u5473\u7740\u76f8\u540c\u7684\u8fd0\u884c\u8017\u65f6\u3002 \u53ea\u8981\u517c\u5bb9\u89c4\u8303\u89c4\u5b9a\u7684\u8bed\u4e49&#xff0c;JVM \u5c31\u53ef\u4ee5\u91c7\u7528\u4e0d\u540c\u7684\u6267\u884c\u8def\u5f84\u548c\u4f18\u5316\u7b56\u7565\u3002<\/p>\n<h3>\u4e8c\u3001\u539f\u56e0\u4e00&#xff1a;JVMS \u53ea\u89c4\u5b9a\u6267\u884c\u8bed\u4e49&#xff0c;\u4e0d\u89c4\u5b9a\u552f\u4e00\u7684\u6267\u884c\u5b9e\u73b0<\/h3>\n<p>\u5728\u9605\u8bfb JVMS \u65f6&#xff0c;\u9700\u8981\u91cd\u70b9\u7406\u89e3\u7b2c 2.13 \u8282 Public Design, Private Implementation&#xff08;\u516c\u5171\u8bbe\u8ba1\u4e0e\u79c1\u6709\u5b9e\u73b0&#xff09;\u3002<\/p>\n<p>\u89c4\u8303\u8981\u6c42 JVM \u6b63\u786e\u8bfb\u53d6 Class \u6587\u4ef6&#xff0c;\u5e76\u5b9e\u73b0\u5bf9\u5e94\u7684\u6307\u4ee4\u8bed\u4e49&#xff0c;\u4f46\u5141\u8bb8\u5b9e\u73b0\u8005\u81ea\u7531\u9009\u62e9\u5e95\u5c42\u6280\u672f\u3002\u4f8b\u5982&#xff1a;<\/p>\n<ul>\n<li>\u4f7f\u7528\u89e3\u91ca\u5668\u9010\u6761\u6267\u884c\u5b57\u8282\u7801\u3002<\/li>\n<li>\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\u5c06\u5b57\u8282\u7801\u7f16\u8bd1\u4e3a CPU \u672c\u5730\u6307\u4ee4\u3002<\/li>\n<li>\u4f7f\u7528\u4e0d\u540c\u7684\u5bf9\u8c61\u5185\u5b58\u5e03\u5c40\u548c\u5783\u573e\u56de\u6536\u7b97\u6cd5\u3002<\/li>\n<li>\u5bf9\u65b9\u6cd5\u8c03\u7528\u3001\u5bf9\u8c61\u5206\u914d\u3001\u9501\u64cd\u4f5c\u7b49\u91c7\u7528\u4e0d\u540c\u7684\u4f18\u5316\u7b56\u7565\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u5b9e\u73b0\u4e0a\u7684\u5dee\u5f02\u4e0d\u4f1a\u81ea\u52a8\u8fdd\u53cd Java \u7684\u8de8\u5e73\u53f0\u627f\u8bfa\u3002<\/p>\n<p>\u53ef\u4ee5\u5c06\u5176\u7406\u89e3\u4e3a\u4ee5\u4e0b\u6267\u884c\u94fe\u8def&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261031215630-6ae6640ef02aa.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u8fd9\u91cc\u6709\u4e00\u4e2a\u5bb9\u6613\u5ffd\u7565\u7684\u533a\u522b&#xff1a;<\/p>\n<p>\u540c\u4e00\u4efd Java \u6e90\u7801\u4e0d\u4e00\u5b9a\u751f\u6210\u76f8\u540c\u7684 Class \u6587\u4ef6\u3002 \u5982\u679c\u4f7f\u7528\u4e0d\u540c\u7248\u672c\u7684 javac&#xff0c;\u7f16\u8bd1\u76ee\u6807\u7248\u672c\u3001\u5b57\u8282\u7801\u7248\u672c\u4ee5\u53ca\u7f16\u8bd1\u5668\u751f\u6210\u7b56\u7565\u90fd\u53ef\u80fd\u4e0d\u540c\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u8fdb\u884c\u8de8\u5e73\u53f0\u6027\u80fd\u7814\u7a76\u65f6&#xff0c;\u9996\u5148\u5e94\u8be5\u660e\u786e\u6bd4\u8f83\u5bf9\u8c61\u7a76\u7adf\u662f\u76f8\u540c\u6e90\u7801&#xff0c;\u8fd8\u662f\u76f8\u540c\u7684 Class \u6587\u4ef6\u3002<\/p>\n<h3>\u4e09\u3001\u539f\u56e0\u4e8c&#xff1a;\u4e0d\u540c JVM \u4f1a\u9009\u62e9\u4e0d\u540c\u7684\u8fd0\u884c\u4e0e\u7f16\u8bd1\u8def\u5f84<\/h3>\n<p>\u4ee5 OpenJDK HotSpot \u4e3a\u4f8b&#xff0c;\u5b83\u4e0d\u662f\u7b80\u5355\u5730\u5c06\u6240\u6709\u65b9\u6cd5\u4e00\u6b21\u6027\u7f16\u8bd1\u6210\u673a\u5668\u7801&#xff0c;\u800c\u662f\u53ef\u4ee5\u6839\u636e\u8fd0\u884c\u60c5\u51b5\u91c7\u7528\u89e3\u91ca\u6267\u884c\u3001\u5206\u5c42\u7f16\u8bd1\u7b49\u65b9\u5f0f\u3002<\/p>\n<h4>1. \u89e3\u91ca\u6267\u884c\u4e0e JIT \u7f16\u8bd1\u7684\u533a\u522b<\/h4>\n<p>\u89e3\u91ca\u6267\u884c\u901a\u5e38\u9700\u8981\u901a\u8fc7\u89e3\u91ca\u5668\u5904\u7406\u5b57\u8282\u7801&#xff0c;\u6267\u884c\u8fc7\u7a0b\u4e2d\u5b58\u5728\u989d\u5916\u7684\u5206\u6d3e\u548c\u8fd0\u884c\u65f6\u7ba1\u7406\u5f00\u9500\u3002<\/p>\n<p>JIT \u7f16\u8bd1\u5219\u4f1a\u5c06\u70ed\u70b9\u65b9\u6cd5\u7f16\u8bd1\u6210\u672c\u5730\u673a\u5668\u7801&#xff0c;\u5e76\u5229\u7528\u8fd0\u884c\u65f6\u6536\u96c6\u7684\u4fe1\u606f\u8fdb\u884c\u4f18\u5316\u3002<\/p>\n<p>HotSpot \u7684\u6e90\u7801\u63d0\u4f9b\u4e86 UseInterpreter\u3001UseCompiler \u548c TieredCompilation \u7b49\u76f8\u5173\u5f00\u5173\u3002\u7f16\u8bd1\u4ee3\u7406 CompileBroker \u8d1f\u8d23\u534f\u8c03\u7f16\u8bd1\u4efb\u52a1&#xff0c;\u5e76\u53ef\u4ee5\u521d\u59cb\u5316 C1\u3001C2 \u7f16\u8bd1\u5668\u3002<\/p>\n<p>\u4e0b\u9762\u662f OpenJDK src\/hotspot\/share\/runtime\/globals.hpp \u4e2d\u76f8\u5173\u58f0\u660e\u7684\u8282\u9009\u8bf4\u660e&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ OpenJDK HotSpot&#xff1a;globals.hpp&#xff0c;\u76f8\u5173 VM \u53c2\u6570\u8282\u9009<\/span><\/p>\n<p><span class=\"token function\">product<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">bool<\/span><span class=\"token punctuation\">,<\/span> UseInterpreter<span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;Use interpreter for non-compiled methods&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5b66\u4e60\u8981\u70b9&#xff1a;\u51b3\u5b9a\u662f\u5426\u4f7f\u7528\u89e3\u91ca\u5668\u6267\u884c\u672a\u7f16\u8bd1\u65b9\u6cd5\u3002<\/span><\/p>\n<p><span class=\"token function\">product<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">bool<\/span><span class=\"token punctuation\">,<\/span> UseCompiler<span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <span class=\"token string\">&#034;Use Just-In-Time compilation&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5b66\u4e60\u8981\u70b9&#xff1a;\u63a7\u5236\u662f\u5426\u4f7f\u7528 JIT \u7f16\u8bd1\u3002<\/span><\/p>\n<p><span class=\"token function\">product_pd<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">bool<\/span><span class=\"token punctuation\">,<\/span> TieredCompilation<span class=\"token punctuation\">,<\/span><br \/>\n           <span class=\"token string\">&#034;Enable tiered compilation&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5b66\u4e60\u8981\u70b9&#xff1a;\u5206\u5c42\u7f16\u8bd1\u7684\u9ed8\u8ba4\u914d\u7f6e\u53ef\u4ee5\u5177\u6709\u5e73\u53f0\u76f8\u5173\u6027\u3002<\/span><\/p>\n<p>\u8fd9\u4e9b\u53c2\u6570\u53ea\u662f\u5165\u53e3\u3002\u5b9e\u9645\u8fd0\u884c\u8fc7\u7a0b\u8fd8\u53d7\u7f16\u8bd1\u7b56\u7565\u3001\u65b9\u6cd5\u8c03\u7528\u9891\u7387\u3001\u5faa\u73af\u6267\u884c\u6b21\u6570\u3001\u7f16\u8bd1\u4efb\u52a1\u961f\u5217\u53ca\u7f16\u8bd1\u5668\u662f\u5426\u53ef\u7528\u7b49\u56e0\u7d20\u5f71\u54cd\u3002<\/p>\n<h4>2. \u4e3a\u4ec0\u4e48\u540c\u4e00\u4e2a\u65b9\u6cd5\u53ef\u80fd\u7ecf\u5386\u591a\u6761\u6267\u884c\u8def\u5f84&#xff1f;<\/h4>\n<p>\u5047\u8bbe\u6709\u5982\u4e0b\u7a0b\u5e8f&#xff1a;<\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ExecutionPathDemo<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u89c2\u5bdf\u540c\u4e00\u4e2a\u8ba1\u7b97\u65b9\u6cd5\u5728\u89e3\u91ca\u6267\u884c\u3001JIT \u7f16\u8bd1\u4e2d\u7684\u8868\u73b0\u3002<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">calculate<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> x <span class=\"token operator\">*<\/span> <span class=\"token number\">31<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">7<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">long<\/span> sum <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u591a\u6b21\u8c03\u7528\u65b9\u6cd5&#xff0c;\u4e3a\u70ed\u70b9\u8bc6\u522b\u548c\u7f16\u8bd1\u63d0\u4f9b\u673a\u4f1a\u3002<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">10_000_000<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            sum <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token function\">calculate<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>sum<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u7684\u5b9e\u9645\u6267\u884c\u8fc7\u7a0b\u53ef\u80fd\u662f&#xff1a;<\/p>\n<table>\n<tr>\u9636\u6bb5\u53ef\u80fd\u7684\u6267\u884c\u65b9\u5f0f\u4e3b\u8981\u7279\u5f81<\/tr>\n<tbody>\n<tr>\n<td>\u7c7b\u52a0\u8f7d\u540e<\/td>\n<td>\u89e3\u91ca\u6267\u884c<\/td>\n<td>\u8fd8\u6ca1\u6709\u53ef\u7528\u7684\u70ed\u70b9\u7f16\u8bd1\u4ee3\u7801<\/td>\n<\/tr>\n<tr>\n<td>\u8fd0\u884c\u8fc7\u7a0b\u4e2d<\/td>\n<td>\u6536\u96c6\u8c03\u7528\u4e0e\u5faa\u73af\u4fe1\u606f<\/td>\n<td>\u4e3a\u7f16\u8bd1\u51b3\u7b56\u79ef\u7d2f\u8fd0\u884c\u65f6\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>\u65b9\u6cd5\u6210\u4e3a\u70ed\u70b9<\/td>\n<td>JIT \u7f16\u8bd1<\/td>\n<td>\u751f\u6210\u76ee\u6807 CPU \u7684\u673a\u5668\u7801<\/td>\n<\/tr>\n<tr>\n<td>\u4f18\u5316\u6761\u4ef6\u53d8\u5316<\/td>\n<td>\u53cd\u4f18\u5316\u6216\u91cd\u65b0\u7f16\u8bd1<\/td>\n<td>\u6062\u590d\u89e3\u91ca\u6267\u884c\u6216\u4f7f\u7528\u65b0\u7684\u7f16\u8bd1\u7248\u672c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u4e9b\u662f HotSpot \u53ef\u80fd\u91c7\u7528\u7684\u6267\u884c\u8fc7\u7a0b&#xff0c;\u5e76\u4e0d\u662f\u6240\u6709 JVM \u90fd\u5fc5\u987b\u91c7\u7528\u5b8c\u5168\u76f8\u540c\u7684\u9636\u6bb5\u548c\u9608\u503c\u3002<\/p>\n<p>\u53e6\u4e00\u4e2a\u5173\u952e\u56e0\u7d20\u662f\u8fd0\u884c\u65f6\u7c7b\u578b\u4fe1\u606f\u3002\u4f8b\u5982&#xff0c;\u63a5\u53e3\u8c03\u7528\u5728\u67d0\u4e2a\u5e94\u7528\u4e2d\u53ef\u80fd\u957f\u671f\u53ea\u51fa\u73b0\u4e00\u79cd\u5b9e\u73b0\u7c7b&#xff0c;JIT \u4fbf\u53ef\u80fd\u53bb\u865a\u62df\u5316\u5e76\u5185\u8054\u8c03\u7528&#xff1b;\u5982\u679c\u540e\u7eed\u52a0\u8f7d\u4e86\u5176\u4ed6\u5b9e\u73b0\u7c7b&#xff0c;\u539f\u6709\u4f18\u5316\u6761\u4ef6\u53ef\u80fd\u4e0d\u518d\u6210\u7acb&#xff0c;JVM \u5c31\u53ef\u80fd\u8c03\u6574\u7f16\u8bd1\u4ee3\u7801\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u540c\u4e00\u6bb5\u4ee3\u7801\u5728\u51b7\u542f\u52a8\u65f6\u548c\u5145\u5206\u9884\u70ed\u540e&#xff0c;\u672c\u6765\u5c31\u53ef\u80fd\u8d70\u4e0d\u540c\u7684\u6267\u884c\u8def\u5f84&#xff1b;\u5373\u4f7f JVM \u4e0e CPU \u6ca1\u6709\u53d8\u5316&#xff0c;\u4e5f\u4e0d\u4e00\u5b9a\u59cb\u7ec8\u6267\u884c\u76f8\u540c\u7684\u673a\u5668\u7801\u3002<\/p>\n<h3>\u56db\u3001\u539f\u56e0\u4e09&#xff1a;\u4e0d\u540c CPU \u67b6\u6784\u9700\u8981\u4e0d\u540c\u7684\u673a\u5668\u6307\u4ee4<\/h3>\n<p>\u5373\u4f7f\u4e24\u4e2a JVM \u4f7f\u7528\u76f8\u4f3c\u7684\u7f16\u8bd1\u5668\u4f18\u5316\u7b56\u7565&#xff0c;x86-64 \u4e0e AArch64 \u751f\u6210\u7684\u673a\u5668\u7801\u4e5f\u53ef\u80fd\u4e0d\u540c\u3002<\/p>\n<p>\u56e0\u4e3a\u5b83\u4eec\u5177\u6709\u4e0d\u540c\u7684\u6307\u4ee4\u96c6\u3001\u5bc4\u5b58\u5668\u5206\u914d\u7ea6\u675f\u3001\u539f\u5b50\u64cd\u4f5c\u6307\u4ee4\u3001\u5411\u91cf\u6307\u4ee4\u4ee5\u53ca\u5185\u5b58\u6392\u5e8f\u89c4\u5219\u3002<\/p>\n<h4>1. \u4ece\u5185\u5b58\u5c4f\u969c\u770b\u67b6\u6784\u5dee\u5f02<\/h4>\n<p>\u4ee5 HotSpot \u7684 OrderAccess \u4e3a\u4f8b&#xff0c;\u53ef\u4ee5\u770b\u5230 JVM \u4e3a\u4e0d\u540c\u5904\u7406\u5668\u5e73\u53f0\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u5185\u5b58\u6392\u5e8f\u5b9e\u73b0\u3002<\/p>\n<p>\u5728 Linux x86 \u7684\u5b9e\u73b0\u6587\u4ef6 src\/hotspot\/os_cpu\/linux_x86\/orderAccess_linux_x86.hpp \u4e2d&#xff0c;\u6709\u5982\u4e0b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ x86 \u5e73\u53f0\u7684 HotSpot OrderAccess \u5b9e\u73b0&#xff0c;\u8282\u9009<\/span><\/p>\n<p><span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">loadload<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">compiler_barrier<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">storestore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">compiler_barrier<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">loadstore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">compiler_barrier<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ StoreLoad \u6392\u5e8f\u7ea6\u675f\u9700\u8981\u66f4\u5f3a\u7684\u5c4f\u969c\u5b9e\u73b0\u3002<\/span><br \/>\n<span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">storeload<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">fence<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">fence<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4f7f\u7528\u5e26 LOCK \u524d\u7f00\u7684\u6307\u4ee4\u5b9e\u73b0\u5b8c\u6574\u5c4f\u969c\u3002<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8be5\u5b9e\u73b0\u8fd8\u7ea6\u675f\u7f16\u8bd1\u5668\u7684\u5185\u5b58\u8bbf\u95ee\u91cd\u6392\u3002<\/span><br \/>\n    __asm__ <span class=\"token keyword\">volatile<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;lock; addl $0,0(%%rsp)&#034;<\/span><br \/>\n                      <span class=\"token operator\">:<\/span> <span class=\"token operator\">:<\/span> <span class=\"token operator\">:<\/span> <span class=\"token string\">&#034;cc&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;memory&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">compiler_barrier<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u800c\u5728 Linux AArch64 \u5bf9\u5e94\u5b9e\u73b0 src\/hotspot\/os_cpu\/linux_aarch64\/orderAccess_linux_aarch64.hpp \u4e2d&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ AArch64 \u5e73\u53f0\u7684 HotSpot OrderAccess \u5b9e\u73b0&#xff0c;\u8282\u9009<\/span><\/p>\n<p><span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">loadload<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">acquire<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">storestore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">release<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">loadstore<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">acquire<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">inline<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token class-name\">OrderAccess<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">storeload<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">fence<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ acquire\u3001release \u548c fence \u7684\u5b9e\u9645\u5b9e\u73b0\u7ee7\u7eed\u4f7f\u7528<\/span><br \/>\n<span class=\"token comment\">\/\/ \u7f16\u8bd1\u5668\u63d0\u4f9b\u7684\u539f\u5b50\u64cd\u4f5c\u53ca\u5185\u5b58\u6805\u680f\u63a5\u53e3\u3002<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">FULL_MEM_BARRIER<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token function\">__sync_synchronize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">READ_MEM_BARRIER<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token function\">__atomic_thread_fence<\/span><span class=\"token punctuation\">(<\/span>__ATOMIC_ACQUIRE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">WRITE_MEM_BARRIER<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n    <span class=\"token expression\"><span class=\"token function\">__atomic_thread_fence<\/span><span class=\"token punctuation\">(<\/span>__ATOMIC_RELEASE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/span><\/span><\/p>\n<p>\u8fd9\u4e24\u6bb5\u6e90\u7801\u53ef\u4ee5\u5728 OpenJDK \u4ed3\u5e93\u4e2d\u6838\u5bf9\u3002<\/p>\n<p>\u4ece\u7cfb\u7edf\u5de5\u7a0b\u5e08\u7684\u89d2\u5ea6&#xff0c;\u6700\u503c\u5f97\u6ce8\u610f\u7684\u662f&#xff1a;<\/p>\n<ul>\n<li>JVM \u9700\u8981\u6ee1\u8db3\u76f8\u540c\u7684\u5185\u5b58\u8bed\u4e49&#xff0c;\u4f46\u4e0d\u5fc5\u63d2\u5165\u5b8c\u5168\u76f8\u540c\u7684\u5c4f\u969c\u6307\u4ee4\u3002<\/li>\n<li>x86-64 \u7684\u5185\u5b58\u6392\u5e8f\u7ea6\u675f\u901a\u5e38\u6bd4 AArch64 \u66f4\u5f3a&#xff0c;\u67d0\u4e9b\u6392\u5e8f\u7ea6\u675f\u53ef\u4ee5\u901a\u8fc7\u7f16\u8bd1\u5668\u5c4f\u969c\u5b9e\u73b0&#xff0c;\u800c\u4e0d\u5fc5\u989d\u5916\u53d1\u51fa\u786c\u4ef6\u5c4f\u969c\u6307\u4ee4\u3002<\/li>\n<li>AArch64 \u7684\u5b9e\u73b0\u901a\u8fc7 Acquire\u3001Release \u7b49\u8bed\u4e49\u8868\u8fbe\u6392\u5e8f\u8981\u6c42&#xff0c;\u518d\u7531\u5e95\u5c42\u7f16\u8bd1\u5668\u5c06\u5176\u843d\u5b9e\u4e3a\u7b26\u5408\u76ee\u6807\u5e73\u53f0\u8981\u6c42\u7684\u6307\u4ee4\u3002<\/li>\n<\/ul>\n<p>\u9700\u8981\u5f3a\u8c03&#xff0c;\u4ee5\u4e0a\u4ee3\u7801\u662f\u7279\u5b9a OpenJDK \u6e90\u7801\u7248\u672c\u4e2d Linux x86 \u548c Linux AArch64 \u7684\u5b9e\u73b0\u793a\u4f8b&#xff0c;\u5e76\u4e0d\u610f\u5473\u7740\u6240\u6709\u7248\u672c\u3001\u7f16\u8bd1\u5668\u6216\u6240\u6709\u5c4f\u969c\u90fd\u91c7\u7528\u8fd9\u4e9b\u5177\u4f53\u6307\u4ee4\u3002<\/p>\n<p>\u5de5\u7a0b\u7ed3\u8bba&#xff1a;Java \u5c42\u770b\u4f3c\u76f8\u540c\u7684 volatile\u3001\u9501\u6216\u539f\u5b50\u8bbf\u95ee&#xff0c;\u6700\u7ec8\u4ea7\u751f\u7684\u673a\u5668\u6307\u4ee4\u6570\u91cf\u3001\u6267\u884c\u5ef6\u8fdf\u548c\u5bf9\u6d41\u6c34\u7ebf\u7684\u5f71\u54cd\u53ef\u80fd\u4e0d\u540c\u3002 \u8fd9\u4e5f\u662f\u8de8\u67b6\u6784\u5e76\u53d1\u6027\u80fd\u5206\u6790\u4e0d\u80fd\u53ea\u505c\u7559\u5728 Java \u6e90\u7801\u5c42\u9762\u7684\u539f\u56e0\u3002<\/p>\n<h4>2. \u9664\u5185\u5b58\u6392\u5e8f\u5916&#xff0c;\u8fd8\u6709\u54ea\u4e9b\u786c\u4ef6\u5dee\u5f02&#xff1f;<\/h4>\n<table>\n<tr>\u786c\u4ef6\u56e0\u7d20\u53ef\u80fd\u9020\u6210\u7684\u6027\u80fd\u5dee\u5f02<\/tr>\n<tbody>\n<tr>\n<td>\u6307\u4ee4\u96c6\u4e0e CPU \u7279\u6027<\/td>\n<td>\u662f\u5426\u80fd\u4f7f\u7528\u7279\u5b9a\u539f\u5b50\u3001\u5411\u91cf\u6216\u4f4d\u64cd\u4f5c\u6307\u4ee4<\/td>\n<\/tr>\n<tr>\n<td>\u5bc4\u5b58\u5668\u6570\u91cf\u548c\u5206\u914d\u7ea6\u675f<\/td>\n<td>\u6ea2\u51fa\u5230\u6808\u4e0a\u7684\u9891\u7387\u3001\u5bc4\u5b58\u5668\u590d\u5236\u6210\u672c<\/td>\n<\/tr>\n<tr>\n<td>CPU \u6d41\u6c34\u7ebf\u4e0e\u6307\u4ee4\u541e\u5410\u7387<\/td>\n<td>\u76f8\u540c\u64cd\u4f5c\u7684\u5ef6\u8fdf\u548c\u6bcf\u5468\u671f\u6267\u884c\u6570\u91cf\u4e0d\u540c<\/td>\n<\/tr>\n<tr>\n<td>L1\/L2\/L3 \u7f13\u5b58\u53ca\u5185\u5b58\u5ef6\u8fdf<\/td>\n<td>\u6570\u636e\u8bbf\u95ee\u3001\u5bf9\u8c61\u904d\u5386\u3001\u7f13\u5b58\u672a\u547d\u4e2d\u6210\u672c\u4e0d\u540c<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u6392\u5e8f\u7ea6\u675f<\/td>\n<td>\u5c4f\u969c\u6307\u4ee4\u7684\u5b9e\u73b0\u4e0e\u6267\u884c\u6210\u672c\u4e0d\u540c<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u6838\u4e92\u8fde\u4e0e\u7f13\u5b58\u4e00\u81f4\u6027<\/td>\n<td>\u5171\u4eab\u6570\u636e\u7ade\u4e89\u3001\u7f13\u5b58\u884c\u8fc1\u79fb\u53ca\u4f2a\u5171\u4eab\u7684\u6210\u672c\u4e0d\u540c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u4e9b\u56e0\u7d20\u6700\u7ec8\u4f1a\u901a\u8fc7\u673a\u5668\u7801\u751f\u6210\u3001\u5b9e\u9645\u6307\u4ee4\u6267\u884c\u548c\u5185\u5b58\u8bbf\u95ee\u8fc7\u7a0b\u53cd\u6620\u5230\u7a0b\u5e8f\u6027\u80fd\u4e2d\u3002\u5373\u4f7f JIT \u751f\u6210\u76f8\u540c\u6570\u91cf\u7684\u673a\u5668\u6307\u4ee4&#xff0c;\u4e0d\u540c CPU \u5fae\u67b6\u6784\u4e5f\u53ef\u80fd\u4ea7\u751f\u660e\u663e\u4e0d\u540c\u7684\u8017\u65f6\u3002<\/p>\n<h3>\u4e94\u3001\u539f\u56e0\u56db&#xff1a;\u5783\u573e\u56de\u6536\u3001\u5bf9\u8c61\u5e03\u5c40\u548c\u8fd0\u884c\u65f6\u914d\u7f6e\u4e5f\u4f1a\u6539\u53d8\u6027\u80fd<\/h3>\n<p>\u4e0d\u540c JVM \u7684\u5dee\u5f02\u4e0d\u53ea\u4f53\u73b0\u5728\u89e3\u91ca\u5668\u4e0e JIT \u4e0a&#xff0c;\u8fd8\u5305\u62ec\u8fd0\u884c\u65f6\u7cfb\u7edf\u7684\u5b9e\u73b0\u9009\u62e9\u3002<\/p>\n<p>JVMS \u5e76\u4e0d\u89c4\u5b9a\u552f\u4e00\u7684\u5bf9\u8c61\u5185\u90e8\u7ed3\u6784&#xff0c;\u4e5f\u4e0d\u8981\u6c42\u4f7f\u7528\u6307\u5b9a\u7684\u5783\u573e\u56de\u6536\u7b97\u6cd5\u3002<\/p>\n<p>\u4f8b\u5982&#xff0c;\u540c\u4e00\u4e2a\u521b\u5efa\u5927\u91cf\u77ed\u751f\u547d\u5468\u671f\u5bf9\u8c61\u7684 Java \u7a0b\u5e8f&#xff0c;\u5728\u4e0d\u540c\u7684 JVM \u914d\u7f6e\u4e2d\u53ef\u80fd\u51fa\u73b0\u4ee5\u4e0b\u5dee\u5f02&#xff1a;<\/p>\n<ul>\n<li>\u4f7f\u7528\u4e0d\u540c\u5783\u573e\u56de\u6536\u5668&#xff0c;\u5bfc\u81f4\u6682\u505c\u65f6\u95f4\u3001\u5e76\u53d1\u5de5\u4f5c\u91cf\u548c CPU \u5360\u7528\u4e0d\u540c\u3002<\/li>\n<li>\u4f7f\u7528\u4e0d\u540c\u7684\u5806\u5927\u5c0f\u548c\u5185\u5b58\u5206\u914d\u7b56\u7565&#xff0c;\u5bfc\u81f4 GC \u89e6\u53d1\u9891\u7387\u4e0d\u540c\u3002<\/li>\n<li>\u4f7f\u7528\u4e0d\u540c\u7684\u5bf9\u8c61\u5f15\u7528\u8868\u793a\u3001\u538b\u7f29\u5f15\u7528\u914d\u7f6e\u6216\u5bf9\u8c61\u5e03\u5c40&#xff0c;\u5bfc\u81f4\u5185\u5b58\u5360\u7528\u4e0e\u7f13\u5b58\u884c\u4e3a\u4e0d\u540c\u3002<\/li>\n<li>\u4f7f\u7528\u4e0d\u540c\u7684\u5185\u5efa\u51fd\u6570\u3001\u7f16\u8bd1\u5668\u4f18\u5316\u6216\u672c\u5730\u4ee3\u7801\u5b9e\u73b0&#xff0c;\u5bfc\u81f4\u67d0\u4e9b\u65b9\u6cd5\u7684\u8c03\u7528\u6210\u672c\u4e0d\u540c\u3002<\/li>\n<li>\u53d7\u5230\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7edf\u8c03\u5ea6\u7b56\u7565\u3001\u5bb9\u5668 CPU \u914d\u989d\u53ca\u5185\u5b58\u9650\u5236\u7684\u5f71\u54cd&#xff0c;\u5bfc\u81f4\u541e\u5410\u91cf\u548c\u5c3e\u5ef6\u8fdf\u53d1\u751f\u53d8\u5316\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u56e0\u7d20\u76f8\u4e92\u4f5c\u7528\u3002\u4f8b\u5982&#xff0c;\u67d0\u6b21\u8fd0\u884c\u901f\u5ea6\u8f83\u6162&#xff0c;\u539f\u56e0\u53ef\u80fd\u4e0d\u662f\u67d0\u6761\u7b97\u672f\u6307\u4ee4\u6548\u7387\u4f4e&#xff0c;\u800c\u662f\u7f13\u5b58\u672a\u547d\u4e2d\u589e\u52a0\u3001\u5783\u573e\u56de\u6536\u66f4\u9891\u7e41&#xff0c;\u6216\u7ebf\u7a0b\u5728 CPU \u914d\u989d\u9650\u5236\u4e0b\u88ab\u6682\u505c\u6267\u884c\u3002<\/p>\n<p>\u6240\u4ee5&#xff0c;\u7cfb\u7edf\u6027\u80fd\u8bca\u65ad\u5e94\u628a\u6267\u884c\u5f15\u64ce\u3001\u5185\u5b58\u7ba1\u7406\u3001\u64cd\u4f5c\u7cfb\u7edf\u548c\u786c\u4ef6\u653e\u5728\u540c\u4e00\u4e2a\u5206\u6790\u6846\u67b6\u4e2d\u3002<\/p>\n<h3>\u516d\u3001\u5fc5\u987b\u533a\u5206&#xff1a;\u6027\u80fd\u4e0d\u540c&#xff0c;\u4e0d\u7b49\u4e8e\u7a0b\u5e8f\u8bed\u4e49\u53ef\u4ee5\u968f\u610f\u4e0d\u540c<\/h3>\n<p>\u8fd9\u4e00\u70b9\u5bf9\u7406\u89e3 JVMS \u5c24\u5176\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u7a0b\u5e8f\u5b8c\u5168\u7b26\u5408 Java \u89c4\u8303&#xff0c;\u540c\u4e00\u4efd Class \u6587\u4ef6\u5728\u517c\u5bb9\u7684 JVM \u4e0a\u6267\u884c\u65f6&#xff0c;JVM \u4e0d\u80fd\u4ec5\u4ec5\u56e0\u4e3a CPU \u67b6\u6784\u4e0d\u540c&#xff0c;\u5c31\u4efb\u610f\u6539\u53d8\u89c4\u8303\u8981\u6c42\u7684\u7a0b\u5e8f\u8bed\u4e49\u3002<\/p>\n<p>\u4f46\u4ee5\u4e0b\u60c5\u51b5\u786e\u5b9e\u53ef\u80fd\u9020\u6210\u53ef\u89c2\u5bdf\u7ed3\u679c\u4e0d\u540c&#xff1a;<\/p>\n<p>\u7b2c\u4e00&#xff0c;\u5b58\u5728\u6570\u636e\u7ade\u4e89\u3002 \u5982\u679c\u591a\u4e2a\u7ebf\u7a0b\u65e0\u540c\u6b65\u5730\u8bbf\u95ee\u5171\u4eab\u53d8\u91cf&#xff0c;\u7a0b\u5e8f\u53ef\u80fd\u6ca1\u6709\u5efa\u7acb\u6240\u9700\u7684 happens-before \u5173\u7cfb\u3002\u4e0d\u540c\u7684 JIT \u4f18\u5316\u3001CPU \u5185\u5b58\u6392\u5e8f\u53ca\u8fd0\u884c\u65f6\u8c03\u5ea6\u53ef\u80fd\u4f7f\u7a0b\u5e8f\u8868\u73b0\u51fa\u4e0d\u540c\u7684\u7ed3\u679c\u3002<\/p>\n<p>\u7b2c\u4e8c&#xff0c;\u4f7f\u7528\u5177\u6709\u5141\u8bb8\u8bef\u5dee\u7684 API\u3002 \u67d0\u4e9b\u6570\u5b66\u51fd\u6570\u3001\u65f6\u95f4\u76f8\u5173 API \u6216\u968f\u673a\u6570 API&#xff0c;\u672c\u6765\u5c31\u5177\u6709\u89c4\u8303\u5b9a\u4e49\u7684\u8bef\u5dee\u8303\u56f4\u3001\u73af\u5883\u4f9d\u8d56\u6216\u975e\u786e\u5b9a\u6027\u3002<\/p>\n<p>\u7b2c\u4e09&#xff0c;\u6267\u884c\u73af\u5883\u4e0d\u540c\u3002 \u672c\u5730 JNI \u4ee3\u7801\u3001\u7cfb\u7edf\u8c03\u7528\u3001\u6587\u4ef6\u7cfb\u7edf\u3001\u7f51\u7edc\u670d\u52a1\u3001\u53ef\u7528 CPU \u7279\u6027\u53ca\u73af\u5883\u53d8\u91cf\u90fd\u4f1a\u5f71\u54cd\u6267\u884c\u7ed3\u679c\u6216\u65f6\u5e8f\u3002<\/p>\n<p>\u8fd8\u6709\u4e00\u4e2a\u91cd\u8981\u7684\u5386\u53f2\u8fb9\u754c&#xff1a;Java SE 17 \u53ca\u4ee5\u540e\u8981\u6c42\u6d6e\u70b9\u8868\u8fbe\u5f0f\u91c7\u7528\u4e25\u683c\u6c42\u503c\u8bed\u4e49&#xff0c;\u8f83\u65e9\u7248\u672c\u66fe\u5141\u8bb8\u67d0\u4e9b\u6269\u5c55\u4e2d\u95f4\u6d6e\u70b9\u503c\u7684\u884c\u4e3a\u3002\u4e0d\u80fd\u628a\u65e9\u671f Java \u7684\u6d6e\u70b9\u89c4\u5219\u76f4\u63a5\u5957\u7528\u5230\u73b0\u4ee3 JDK\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u6392\u67e5\u8de8\u5e73\u53f0\u5dee\u5f02\u65f6&#xff0c;\u5e94\u5148\u5224\u65ad\u95ee\u9898\u5c5e\u4e8e\u54ea\u4e00\u79cd&#xff1a;<\/p>\n<table>\n<tr>\u73b0\u8c61\u4f18\u5148\u68c0\u67e5\u7684\u65b9\u5411<\/tr>\n<tbody>\n<tr>\n<td>\u7ed3\u679c\u8bed\u4e49\u4e0d\u540c<\/td>\n<td>Java \u89c4\u8303\u3001\u6570\u636e\u7ade\u4e89\u3001API \u5951\u7ea6\u3001JNI \u548c\u73af\u5883\u5dee\u5f02<\/td>\n<\/tr>\n<tr>\n<td>\u51b7\u542f\u52a8\u901f\u5ea6\u4e0d\u540c<\/td>\n<td>\u7c7b\u52a0\u8f7d\u3001\u89e3\u91ca\u6267\u884c\u3001JIT \u7f16\u8bd1\u4e0e\u9884\u70ed<\/td>\n<\/tr>\n<tr>\n<td>\u7a33\u6001\u541e\u5410\u91cf\u4e0d\u540c<\/td>\n<td>\u751f\u6210\u7684\u673a\u5668\u7801\u3001CPU \u5fae\u67b6\u6784\u3001GC \u4e0e\u5185\u5b58\u8bbf\u95ee<\/td>\n<\/tr>\n<tr>\n<td>\u5c3e\u5ef6\u8fdf\u4e0d\u540c<\/td>\n<td>GC\u3001\u8c03\u5ea6\u3001\u9501\u7ade\u4e89\u3001\u7f3a\u9875\u3001I\/O \u4e0e\u8d44\u6e90\u9650\u5236<\/td>\n<\/tr>\n<tr>\n<td>\u540c\u4e00\u5e73\u53f0\u591a\u6b21\u6d4b\u8bd5\u5dee\u5f02\u5927<\/td>\n<td>JIT \u72b6\u6001\u3001\u8f93\u5165\u5206\u5e03\u3001CPU \u9891\u7387\u3001\u7cfb\u7edf\u8d1f\u8f7d\u4e0e\u6d4b\u8bd5\u65b9\u6cd5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u4e03\u3001\u7cfb\u7edf\u5de5\u7a0b\u5e08\u5e94\u8be5\u5982\u4f55\u9a8c\u8bc1\u8fd9\u4e9b\u5dee\u5f02&#xff1f;<\/h3>\n<p>\u5efa\u8bae\u91c7\u7528\u4ee5\u4e0b\u6b65\u9aa4&#xff0c;\u907f\u514d\u53ea\u51ed Java \u6e90\u7801\u6216\u5355\u6b21\u8fd0\u884c\u7ed3\u679c\u4e0b\u7ed3\u8bba\u3002<\/p>\n<h4>\u7b2c\u4e00\u6b65&#xff1a;\u5efa\u7acb\u53ef\u6bd4\u8f83\u7684\u8fd0\u884c\u73af\u5883<\/h4>\n<p>\u8bb0\u5f55 JDK \u7248\u672c\u3001JVM \u5b9e\u73b0\u3001CPU \u67b6\u6784\u3001\u64cd\u4f5c\u7cfb\u7edf\u3001GC \u7c7b\u578b\u3001\u5806\u5927\u5c0f\u3001\u5bb9\u5668\u9650\u5236&#xff0c;\u4ee5\u53ca\u5168\u90e8 JVM \u53c2\u6570\u3002<\/p>\n<p><span class=\"token comment\"># \u786e\u8ba4 Java \u7248\u672c\u3001\u4f9b\u5e94\u5546\u548c JVM \u5b9e\u73b0<\/span><br \/>\n<span class=\"token function\">java<\/span> <span class=\"token parameter variable\">-version<\/span><\/p>\n<p><span class=\"token comment\"># \u67e5\u770b VM \u76f8\u5173\u8bbe\u7f6e<\/span><br \/>\n<span class=\"token function\">java<\/span> <span class=\"token parameter variable\">-XshowSettings:vm<\/span> <span class=\"token parameter variable\">-version<\/span><\/p>\n<p><span class=\"token comment\"># \u8f93\u51fa\u521d\u59cb\u5316\u4e0e\u6700\u7ec8\u914d\u7f6e\u4e2d\u7684 JVM \u53c2\u6570<\/span><br \/>\n<span class=\"token function\">java<\/span> <span class=\"token parameter variable\">-XX:&#043;PrintCommandLineFlags<\/span> <span class=\"token parameter variable\">-version<\/span><br \/>\n<span class=\"token function\">java<\/span> <span class=\"token parameter variable\">-XX:&#043;PrintFlagsFinal<\/span> <span class=\"token parameter variable\">-version<\/span><\/p>\n<p>\u82e5\u6bd4\u8f83\u4e0d\u540c CPU&#xff0c;\u5c3d\u53ef\u80fd\u4f7f\u7528\u76f8\u540c\u7684 Class \u6587\u4ef6\u3001\u76f8\u540c\u7684\u5e94\u7528\u8f93\u5165\u4e0e\u4e00\u81f4\u7684\u5806\u914d\u7f6e\u3002\u82e5\u6bd4\u8f83\u4e0d\u540c JVM \u5b9e\u73b0&#xff0c;\u5219\u8bb0\u5f55\u5404\u81ea\u7684\u9ed8\u8ba4\u914d\u7f6e\u5dee\u5f02&#xff0c;\u4e0d\u8981\u628a\u9ed8\u8ba4\u53c2\u6570\u4e0d\u4e00\u81f4\u9020\u6210\u7684\u5dee\u5f02\u8bef\u5224\u4e3a\u7f16\u8bd1\u5668\u4f18\u52a3\u3002<\/p>\n<h4>\u7b2c\u4e8c\u6b65&#xff1a;\u89c2\u5bdf\u89e3\u91ca\u6267\u884c\u4e0e JIT \u7f16\u8bd1<\/h4>\n<p>\u5728\u652f\u6301\u76f8\u5e94 HotSpot \u53c2\u6570\u7684\u73af\u5883\u4e2d&#xff0c;\u53ef\u4ee5\u4f7f\u7528&#xff1a;<\/p>\n<p><span class=\"token comment\"># \u67e5\u770b\u70ed\u70b9\u65b9\u6cd5\u7f16\u8bd1\u4e8b\u4ef6\u4ee5\u53ca\u5185\u8054\u51b3\u7b56<\/span><br \/>\n<span class=\"token function\">java<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n  <span class=\"token parameter variable\">-XX:&#043;UnlockDiagnosticVMOptions<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n  <span class=\"token parameter variable\">-XX:&#043;PrintCompilation<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n  <span class=\"token parameter variable\">-XX:&#043;PrintInlining<\/span> <span class=\"token punctuation\">\\\\<\/span><br \/>\n  <span class=\"token parameter variable\">-jar<\/span> app.jar<\/p>\n<p>\u8fd9\u4e9b\u53c2\u6570\u53ef\u5e2e\u52a9\u5206\u6790\u70ed\u70b9\u65b9\u6cd5\u4f55\u65f6\u88ab\u7f16\u8bd1\u3001\u8c03\u7528\u662f\u5426\u88ab\u5185\u8054&#xff0c;\u4ee5\u53ca\u4e0d\u540c\u8fd0\u884c\u9636\u6bb5\u662f\u5426\u91c7\u7528\u4e0d\u540c\u4f18\u5316\u7b56\u7565\u3002\u5177\u4f53\u8f93\u51fa\u4e0e\u53c2\u6570\u53ef\u7528\u6027\u53d6\u51b3\u4e8e JDK \u7248\u672c\u548c JVM \u5b9e\u73b0\u3002<\/p>\n<p>\u8fd8\u53ef\u4ee5\u4f7f\u7528 -Xint \u8fdb\u884c\u89e3\u91ca\u6267\u884c\u5bf9\u7167&#xff0c;\u4f46\u5e94\u6ce8\u610f&#xff1a;\u5b83\u6539\u53d8\u4e86\u6267\u884c\u6a21\u5f0f&#xff0c;\u4e0d\u4ee3\u8868\u771f\u5b9e\u751f\u4ea7\u73af\u5883\u7684\u6027\u80fd\u3002\u4e0d\u80fd\u76f4\u63a5\u5c06\u5176\u7ed3\u679c\u5f53\u4f5c\u6b63\u5e38 JIT \u8fd0\u884c\u7684\u6027\u80fd\u57fa\u7ebf\u3002<\/p>\n<h4>\u7b2c\u4e09\u6b65&#xff1a;\u68c0\u67e5\u751f\u6210\u7684\u673a\u5668\u7801\u4e0e CPU \u884c\u4e3a<\/h4>\n<p>\u82e5\u9700\u8981\u6df1\u5165\u5206\u6790&#xff0c;\u53ef\u4ee5\u5728\u5177\u5907\u76f8\u5e94\u5de5\u5177\u652f\u6301\u7684 HotSpot \u73af\u5883\u4e2d\u67e5\u770b\u6c47\u7f16\u8f93\u51fa&#xff0c;\u518d\u7ed3\u5408 CPU \u6027\u80fd\u8ba1\u6570\u5668\u89c2\u5bdf&#xff1a;<\/p>\n<ul>\n<li>\u6307\u4ee4\u6570\u91cf\u53ca\u6267\u884c\u6548\u7387\u3002<\/li>\n<li>\u5206\u652f\u9884\u6d4b\u5931\u8d25\u4e0e\u7f13\u5b58\u672a\u547d\u4e2d\u3002<\/li>\n<li>\u9501\u7ade\u4e89\u53ca\u539f\u5b50\u64cd\u4f5c\u6210\u672c\u3002<\/li>\n<li>GC \u65f6\u95f4\u4e0e\u5206\u914d\u901f\u7387\u3002<\/li>\n<li>CPU \u5229\u7528\u7387\u3001\u4e0a\u4e0b\u6587\u5207\u6362\u548c\u7ebf\u7a0b\u8fd0\u884c\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<p>HotSpot \u7684 -XX:&#043;PrintAssembly \u901a\u5e38\u8fd8\u9700\u8981\u76f8\u5e94\u7684\u53cd\u6c47\u7f16\u652f\u6301&#xff0c;\u4f8b\u5982\u517c\u5bb9\u7684 hsdis \u7ec4\u4ef6\u3002\u4ec5\u770b\u5230\u6c47\u7f16\u4e0d\u540c&#xff0c;\u4e5f\u4e0d\u80fd\u76f4\u63a5\u65ad\u5b9a\u67d0\u4efd\u4ee3\u7801\u66f4\u5feb&#xff1b;\u8fd8\u9700\u8981\u7ed3\u5408\u5b9e\u9645\u8fd0\u884c\u6570\u636e\u5224\u65ad\u3002<\/p>\n<h4>\u7b2c\u56db\u6b65&#xff1a;\u91c7\u7528\u5408\u9002\u7684\u57fa\u51c6\u6d4b\u8bd5\u65b9\u6cd5<\/h4>\n<p>\u5bf9\u4e8e Java \u5fae\u57fa\u51c6\u6d4b\u8bd5&#xff0c;\u5efa\u8bae\u4f7f\u7528 JMH&#xff0c;\u8bbe\u7f6e\u5408\u7406\u7684\u9884\u70ed\u3001\u6d4b\u91cf\u9636\u6bb5\u548c\u72ec\u7acb\u8fdb\u7a0b&#xff08;fork&#xff09;&#xff0c;\u907f\u514d\u5c06 JIT \u7f16\u8bd1\u65f6\u95f4\u8bef\u8ba4\u4e3a\u7a33\u6001\u6267\u884c\u65f6\u95f4&#xff0c;\u4e5f\u8981\u9632\u6b62\u6b7b\u4ee3\u7801\u6d88\u9664\u3001\u8f93\u5165\u5206\u5e03\u548c\u6d4b\u8bd5\u987a\u5e8f\u5e26\u6765\u504f\u5dee\u3002<\/p>\n<p>\u5982\u679c\u662f\u5e76\u53d1\u7a0b\u5e8f&#xff0c;\u8fd8\u8981\u786e\u4fdd\u4e24\u79cd\u5e73\u53f0\u6d4b\u8bd5\u7684\u662f\u76f8\u540c\u7684\u6b63\u786e\u6027\u8bed\u4e49&#xff0c;\u800c\u4e0d\u662f\u901a\u8fc7\u6570\u636e\u7ade\u4e89\u6765\u6bd4\u8f83\u6027\u80fd\u3002<\/p>\n<h3>\u516b\u3001\u6700\u7ec8\u5b66\u4e60\u603b\u7ed3<\/h3>\n<p>\u4ece\u7cfb\u7edf\u5de5\u7a0b\u5e08\u7684\u89d2\u5ea6&#xff0c;\u7406\u89e3 JVMS \u4e0e\u786c\u4ef6\u7684\u5173\u7cfb&#xff0c;\u91cd\u70b9\u4e0d\u662f\u8bb0\u4f4f\u67d0\u4e00\u79cd CPU \u7684\u6307\u4ee4&#xff0c;\u800c\u662f\u5efa\u7acb\u4ece\u89c4\u8303\u5230\u5b9e\u73b0\u7684\u5b8c\u6574\u5206\u6790\u94fe\u8def\u3002<\/p>\n<p>\u7b2c\u4e00&#xff0c;\u89c4\u8303\u5c42&#xff1a;\u7406\u89e3 JVMS \u89c4\u5b9a\u7684 Class \u6587\u4ef6\u683c\u5f0f\u3001\u5b57\u8282\u7801\u8bed\u4e49\u4e0e\u6267\u884c\u7ea6\u675f&#xff0c;\u660e\u786e\u54ea\u4e9b\u884c\u4e3a\u5fc5\u987b\u517c\u5bb9\u3002<\/p>\n<p>\u7b2c\u4e8c&#xff0c;JVM \u5b9e\u73b0\u5c42&#xff1a;\u7814\u7a76\u89e3\u91ca\u5668\u3001C1\/C2\u3001\u8fd0\u884c\u65f6\u5256\u6790\u3001\u5185\u8054\u3001\u53cd\u4f18\u5316\u3001\u5783\u573e\u56de\u6536\u53ca\u5185\u5b58\u5e03\u5c40&#xff0c;\u7406\u89e3\u4e3a\u4ec0\u4e48\u540c\u4e00\u4efd\u5b57\u8282\u7801\u4f1a\u8fdb\u5165\u4e0d\u540c\u7684\u5185\u90e8\u6267\u884c\u8def\u5f84\u3002<\/p>\n<p>\u7b2c\u4e09&#xff0c;\u786c\u4ef6\u5c42&#xff1a;\u7814\u7a76 x86-64 \u4e0e AArch64 \u7684\u6307\u4ee4\u96c6\u3001\u5bc4\u5b58\u5668\u3001\u7f13\u5b58\u3001\u5185\u5b58\u6392\u5e8f\u548c\u539f\u5b50\u64cd\u4f5c&#xff0c;\u5206\u6790 JVM \u5982\u4f55\u628a\u7edf\u4e00\u7684 Java \u8bed\u4e49\u6620\u5c04\u5230\u4e0d\u540c\u673a\u5668\u6307\u4ee4\u3002<\/p>\n<p>\u7b2c\u56db&#xff0c;\u6027\u80fd\u9a8c\u8bc1\u5c42&#xff1a;\u7edf\u4e00\u6d4b\u8bd5\u6761\u4ef6&#xff0c;\u67e5\u770b\u7f16\u8bd1\u65e5\u5fd7\u4e0e\u673a\u5668\u7801&#xff0c;\u5e76\u901a\u8fc7\u57fa\u51c6\u6d4b\u8bd5\u548c\u7cfb\u7edf\u6027\u80fd\u6570\u636e\u9a8c\u8bc1\u731c\u6d4b\u3002<\/p>\n<p>\u6700\u7ec8\u5e94\u5f62\u6210\u8fd9\u6837\u4e00\u6761\u5206\u6790\u601d\u8def&#xff1a;<\/p>\n<p>Java \u8bed\u4e49\u8981\u6c42 \u2192 JVM \u5b9e\u73b0\u7b56\u7565 \u2192 JIT \u4f18\u5316\u51b3\u7b56 \u2192 \u76ee\u6807 CPU \u673a\u5668\u7801 \u2192 \u64cd\u4f5c\u7cfb\u7edf\u548c\u786c\u4ef6\u5b9e\u9645\u6267\u884c \u2192 \u53ef\u89c2\u6d4b\u6027\u80fd\u3002<\/p>\n<p>\u53ea\u8981\u6cbf\u7740\u8fd9\u6761\u94fe\u8def\u9010\u5c42\u5b9a\u4f4d&#xff0c;\u5c31\u80fd\u66f4\u51c6\u786e\u5730\u533a\u5206\u89c4\u8303\u4fdd\u8bc1\u3001JVM \u7684\u5b9e\u73b0\u9009\u62e9\u4e0e\u786c\u4ef6\u7684\u6267\u884c\u6210\u672c&#xff0c;\u800c\u4e0d\u518d\u628a\u6240\u6709\u8de8\u5e73\u53f0\u5dee\u5f02\u7b80\u5355\u5f52\u7ed3\u4e3a\u201cJava \u865a\u62df\u673a\u4e0d\u4e00\u6837\u201d\u6216\u201cCPU \u67b6\u6784\u4e0d\u4e00\u6837\u201d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JVM\u89c4\u8303\u5b66\u4e60\u603b\u7ed3-class\u6267\u884c\u6027\u80fd\u5dee\u5f02\u524d\u8a00\u4e3a\u4ec0\u4e48\u76f8\u540c\u7684 Java \u7a0b\u5e8f\u5728\u4e0d\u540c JVM\u3001\u4e0d\u540c CPU \u67b6\u6784\u4e0a&#xff0c;\u6267\u884c\u8def\u5f84\u4e0e\u6027\u80fd\u53ef\u80fd\u4e0d\u540c&#xff1f;\u4e00\u3001\u6838\u5fc3\u7ed3\u8bba&#xff1a;\u8de8\u5e73\u53f0\u517c\u5bb9&#xff0c;\u4e0d\u4ee3\u8868\u5e95\u5c42\u6267\u884c\u8fc7\u7a0b\u5b8c\u5168\u76f8\u540c\u4e8c\u3001\u539f\u56e0\u4e00&#xff1a;JVMS 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