{"id":11243,"date":"2023-11-28T21:56:27","date_gmt":"2023-11-28T13:56:27","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=11243"},"modified":"2023-12-08T11:20:33","modified_gmt":"2023-12-08T03:20:33","slug":"jvm-zhong-yun-xing-shi-shu-ju-qu-shi-shen-me","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-yun-xing-shi-shu-ju-qu-shi-shen-me\/","title":{"rendered":"JVM\u4e2d\u8fd0\u884c\u65f6\u6570\u636e\u533a\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>\u5728Java\u865a\u62df\u673a\uff08JVM\uff09\u4e2d\uff0c\u8fd0\u884c\u65f6\u6570\u636e\u533a\u662f\u6307Java\u7a0b\u5e8f\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u6240\u6d89\u53ca\u7684\u5185\u5b58\u533a\u57df\uff0c\u7528\u4e8e\u5b58\u50a8\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u548c\u6267\u884c\u4e0d\u540c\u7684\u64cd\u4f5c\u3002\u8fd0\u884c\u65f6\u6570\u636e\u533a\u4e3b\u8981\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u90e8\u5206\uff1a<\/p>\n<ol>\n<li>\n<strong>\u7a0b\u5e8f\u8ba1\u6570\u5668\uff08Program Counter Register\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u7a0b\u5e8f\u8ba1\u6570\u5668\u662f\u4e00\u5757\u8f83\u5c0f\u7684\u5185\u5b58\u533a\u57df\uff0c\u5b83\u7528\u4e8e\u5b58\u50a8\u5f53\u524d\u7ebf\u7a0b\u6b63\u5728\u6267\u884c\u7684\u5b57\u8282\u7801\u6307\u4ee4\u7684\u5730\u5740\u3002\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u72ec\u7acb\u7684\u7a0b\u5e8f\u8ba1\u6570\u5668\uff0c\u4fdd\u8bc1\u7ebf\u7a0b\u4e4b\u95f4\u7684\u72ec\u7acb\u6267\u884c\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>Java\u865a\u62df\u673a\u6808\uff08Java Virtual Machine Stacks\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>Java\u865a\u62df\u673a\u6808\u7528\u4e8e\u5b58\u50a8\u65b9\u6cd5\u6267\u884c\u7684\u5c40\u90e8\u53d8\u91cf\u8868\u3001\u64cd\u4f5c\u6570\u6808\u3001\u52a8\u6001\u94fe\u63a5\u3001\u65b9\u6cd5\u51fa\u53e3\u7b49\u4fe1\u606f\u3002\u6bcf\u4e2a\u7ebf\u7a0b\u5728\u6267\u884cJava\u65b9\u6cd5\u7684\u8fc7\u7a0b\u4e2d\uff0c\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u5bf9\u5e94\u7684\u6808\u5e27\uff0c\u6808\u5e27\u4e2d\u5b58\u50a8\u4e86\u65b9\u6cd5\u7684\u5c40\u90e8\u53d8\u91cf\u548c\u64cd\u4f5c\u6570\u6808\u7b49\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>\u672c\u5730\u65b9\u6cd5\u6808\uff08Native Method Stack\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u672c\u5730\u65b9\u6cd5\u6808\u4e0e\u865a\u62df\u673a\u6808\u7c7b\u4f3c\uff0c\u4f46\u5b83\u7528\u4e8e\u6267\u884c\u672c\u5730\u65b9\u6cd5\uff08Native Method\uff09\uff0c\u5373\u7528\u5176\u4ed6\u8bed\u8a00\uff08\u5982C\u3001C++\uff09\u7f16\u5199\u7684\u65b9\u6cd5\u3002\u672c\u5730\u65b9\u6cd5\u6808\u4e5f\u4f1a\u4fdd\u5b58\u65b9\u6cd5\u7684\u5c40\u90e8\u53d8\u91cf\u8868\u3001\u64cd\u4f5c\u6570\u6808\u3001\u52a8\u6001\u94fe\u63a5\u548c\u65b9\u6cd5\u51fa\u53e3\u7b49\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>Java\u5806\uff08Java Heap\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>Java\u5806\u662fJava\u865a\u62df\u673a\u4e2d\u6700\u5927\u7684\u4e00\u5757\u5185\u5b58\u533a\u57df\uff0c\u7528\u4e8e\u5b58\u50a8\u5bf9\u8c61\u5b9e\u4f8b\u3002\u6240\u6709\u7ebf\u7a0b\u5171\u4eabJava\u5806\uff0c\u5728\u5806\u4e2d\u5206\u914d\u7684\u5bf9\u8c61\u53ef\u4ee5\u88ab\u6240\u6709\u7ebf\u7a0b\u8bbf\u95ee\u3002Java\u5806\u662f\u5783\u573e\u56de\u6536\u7684\u4e3b\u8981\u533a\u57df\uff0c\u5305\u62ec\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\u7b49\u4e0d\u540c\u7684\u533a\u57df\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>\u65b9\u6cd5\u533a\uff08Method Area\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u65b9\u6cd5\u533a\u7528\u4e8e\u5b58\u50a8\u7c7b\u7684\u7ed3\u6784\u4fe1\u606f\u3001\u9759\u6001\u53d8\u91cf\u3001\u5e38\u91cf\u6c60\u3001\u7c7b\u7684\u5b57\u8282\u7801\u7b49\u3002\u5728HotSpot\u865a\u62df\u673a\u4e2d\uff0c\u65b9\u6cd5\u533a\u88ab\u79f0\u4e3a\u6c38\u4e45\u4ee3\uff08Permanent Generation\uff09\u3002\u5728Java 8\u53ca\u4e4b\u540e\u7684\u7248\u672c\u4e2d\uff0c\u6c38\u4e45\u4ee3\u88ab\u5143\u7a7a\u95f4\uff08Metaspace\uff09\u6240\u53d6\u4ee3\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\uff08Runtime Constant Pool\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u662f\u65b9\u6cd5\u533a\u7684\u4e00\u90e8\u5206\uff0c\u7528\u4e8e\u5b58\u50a8\u7f16\u8bd1\u671f\u751f\u6210\u7684\u5b57\u9762\u91cf\u548c\u7b26\u53f7\u5f15\u7528\u3002\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u7684\u5185\u5bb9\u5c06\u5728\u7c7b\u52a0\u8f7d\u65f6\u88ab\u52a0\u8f7d\u5230\u65b9\u6cd5\u533a\u7684\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4e2d\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>\u76f4\u63a5\u5185\u5b58\uff08Direct Memory\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u76f4\u63a5\u5185\u5b58\u5e76\u4e0d\u662f\u865a\u62df\u673a\u8fd0\u884c\u65f6\u6570\u636e\u533a\u7684\u4e00\u90e8\u5206\uff0c\u4f46\u5b83\u4e0eNIO\uff08New I\/O\uff09\u5bc6\u5207\u76f8\u5173\u3002\u76f4\u63a5\u5185\u5b58\u662f\u901a\u8fc7Native\u51fd\u6570\u5e93\u76f4\u63a5\u5206\u914d\u5185\u5b58\u7684\uff0c\u800c\u4e0d\u662f\u901a\u8fc7Java\u865a\u62df\u673a\u8fdb\u884c\u5185\u5b58\u5206\u914d\u3002\u5b83\u7684\u5185\u5b58\u4e0d\u53d7Java\u5806\u5927\u5c0f\u9650\u5236\uff0c\u4f46\u4e5f\u9700\u8981\u8c28\u614e\u4f7f\u7528\uff0c\u56e0\u4e3a\u5b83\u7684\u91ca\u653e\u4e0d\u53d7Java\u5783\u573e\u56de\u6536\u673a\u5236\u63a7\u5236\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u8fd9\u4e9b\u8fd0\u884c\u65f6\u6570\u636e\u533a\u57df\u5171\u540c\u7ec4\u6210\u4e86Java\u865a\u62df\u673a\u7684\u5185\u5b58\u7ed3\u6784\uff0c\u6bcf\u4e2a\u533a\u57df\u6709\u7740\u4e0d\u540c\u7684\u7528\u9014\u548c\u751f\u547d\u5468\u671f\uff0c\u5bf9\u4e8eJava\u7a0b\u5e8f\u7684\u8fd0\u884c\u548c\u5185\u5b58\u7ba1\u7406\u8d77\u7740\u5173\u952e\u7684\u4f5c\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Java\u865a\u62df\u673a\uff08JVM\uff09\u4e2d\uff0c\u8fd0\u884c\u65f6\u6570\u636e\u533a\u662f\u6307Java\u7a0b\u5e8f\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u6240\u6d89\u53ca\u7684\u5185\u5b58\u533a\u57df\uff0c\u7528\u4e8e\u5b58\u50a8\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[],"class_list":["post-11243","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=11243"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11243\/revisions"}],"predecessor-version":[{"id":16970,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/11243\/revisions\/16970"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=11243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=11243"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=11243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}