{"id":2729,"date":"2018-04-29T18:08:56","date_gmt":"2018-04-29T10:08:56","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=2729"},"modified":"2018-04-29T18:08:56","modified_gmt":"2018-04-29T10:08:56","slug":"jvm-%e8%bf%9b%e7%a8%8b%e3%80%81%e7%ba%bf%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=2729","title":{"rendered":"JVM \u8fdb\u7a0b\u3001\u7ebf\u7a0b"},"content":{"rendered":"<p>\n\t\u5f88\u591a\u7a0b\u5e8f\u5458\u5bf9\u4e8e\u7ebf\u7a0b\u548c\u8fdb\u7a0b\u8fd8\u4e0d\u662f\u5f88\u6e05\u695a\u3002\u5c24\u5176\u662f\u5728\u9762\u8bd5\u5b98\u95ee\u5230 Redis \u7684\u77e5\u8bc6\u7684\u65f6\u5019\uff0c\u5f88\u5bb9\u6613\u6389\u8fdb\u9762\u8bd5\u9677\u9631\u3002\n<\/p>\n<p>\n\t\u5176\u5b9e\u6211\u5728 3 \u5e74\u524d\u4e5f\u5199\u8fc7\u4e00\u7bc7\u300a<a href=\"https:\/\/www.xttblog.com\/?p=177\" title=\"\u7ebf\u7a0b\u548c\u8fdb\u7a0b - 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\/>\n<\/h2>\n<p>\n\t\u7ebf\u7a0b\u662f\u7a0b\u5e8f\u6267\u884c\u4e2d\u4e00\u4e2a\u5355\u4e00\u7684\u987a\u5e8f\u63a7\u5236\u6d41\u7a0b\uff0c\u662f\u7a0b\u5e8f\u6267\u884c\u7684\u6700\u5c0f\u5355\u5143\uff0c\u662fCPU\u8c03\u5ea6\u548c\u5206\u6d3e\u7684\u57fa\u672c\u5355\u4f4d\u3002\u4e00\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u6709\u4e00\u4e2a\u6216\u591a\u4e2a\u7ebf\u7a0b\uff0c\u5404\u4e2a\u7ebf\u7a0b\u4e4b\u95f4\u5171\u4eab\u7a0b\u5e8f\u7684\u5185\u5b58\u7a7a\u95f4(\u4e5f\u5c31\u662f\u6240\u5728\u8fdb\u7a0b\u7684\u5185\u5b58\u7a7a\u95f4)\u3002\u4e00\u4e2a\u6807\u51c6\u7684\u7ebf\u7a0b\u7531\u7ebf\u7a0bID\u3001\u5f53\u524d\u6307\u4ee4\u6307\u9488(PC)\u3001\u5bc4\u5b58\u5668\u548c\u5806\u6808\u7ec4\u6210\u3002\u800c\u8fdb\u7a0b\u7531\u5185\u5b58\u7a7a\u95f4(\u4ee3\u7801\u3001\u6570\u636e\u3001\u8fdb\u7a0b\u7a7a\u95f4\u3001\u6253\u5f00\u7684\u6587\u4ef6)\u548c\u4e00\u4e2a\u6216\u591a\u4e2a\u7ebf\u7a0b\u7ec4\u6210\u3002\n<\/p>\n<h2>\n\t\u8fdb\u7a0b\u7ec8\u6b62\u7684\u60c5\u51b5<br \/>\n<\/h2>\n<ol>\n<li>\n\t\t\u7a0b\u5e8f\u8fd0\u884c\u5230\u6700\u540e\uff0c\u6267\u884c\u5b8c\u6240\u6709\u7684\u6307\u4ee4\uff0c\u4fbf\u4f1a\u7ed3\u675f\uff0e\n\t<\/li>\n<li>\n\t\t\u7a0b\u5e8f\u8fd0\u884c\u5230\u663e\u793a\u4f7f\u7528\uff33ystem.exit()\u6216Runtime,getRuntime().exit.\u9000\u51fa\u5f53\u524d\u8fdb\u7a0b\uff0e\n\t<\/li>\n<li>\n\t\t\u7a0b\u5e8f\u6267\u884c\u8fc7\u7a0b\u4e2d\u9047\u5230\u672a\u6355\u83b7\u7684\u5f02\u5e38\u6216\u8005\u9519\u8bef\u800c\u7ed3\u675f\uff0e\n\t<\/li>\n<li>\n\t\t\u7a0b\u5e8f\u6240\u5728\u7684\u5e73\u53f0\u5f3a\u5236\u7ed3\u675f\uff2a\uff36\uff2d\u7684\u8fd0\u884c\uff0e\n\t<\/li>\n<\/ol>\n<h2>\n\t\u5b9a\u4e49<br \/>\n<\/h2>\n<ul>\n<li>\n\t\t\u8fdb\u7a0b:\u5177\u6709\u4e00\u5b9a\u72ec\u7acb\u529f\u80fd\u7684\u7a0b\u5e8f\u5173\u4e8e\u67d0\u4e2a\u6570\u636e\u96c6\u5408\u4e0a\u7684\u4e00\u6b21\u8fd0\u884c\u6d3b\u52a8,\u8fdb\u7a0b\u662f\u7cfb\u7edf\u8fdb\u884c\u8d44\u6e90\u5206\u914d\u548c\u8c03\u5ea6\u7684\u4e00\u4e2a\u72ec\u7acb\u5355\u4f4d.\n\t<\/li>\n<li>\n\t\t\u7ebf\u7a0b:\u8fdb\u7a0b\u7684\u4e00\u4e2a\u5b9e\u4f53,\u662fCPU\u8c03\u5ea6\u548c\u5206\u6d3e\u7684\u57fa\u672c\u5355\u4f4d,\u5b83\u662f\u6bd4\u8fdb\u7a0b\u66f4\u5c0f\u7684\u80fd\u72ec\u7acb\u8fd0\u884c\u7684\u57fa\u672c\u5355\u4f4d.\u7ebf\u7a0b\u81ea\u5df1\u57fa\u672c\u4e0a\u4e0d\u62e5\u6709\u7cfb\u7edf\u8d44\u6e90,\u53ea\u62e5\u6709\u4e00\u70b9\u5728\u8fd0\u884c\u4e2d\u5fc5\u4e0d\u53ef\u5c11\u7684\u8d44\u6e90(\u5982\u7a0b\u5e8f\u8ba1\u6570\u5668,\u4e00\u7ec4\u5bc4\u5b58\u5668\u548c\u6808),\u4f46\u662f\u5b83\u53ef\u4e0e\u540c\u5c5e\u4e00\u4e2a\u8fdb\u7a0b\u7684\u5176\u4ed6\u7684\u7ebf\u7a0b\u5171\u4eab\u8fdb\u7a0b\u6240\u62e5\u6709\u7684\u5168\u90e8\u8d44\u6e90.\n\t<\/li>\n<\/ul>\n<p>\n\tjvm\u4e0d\u533a\u5206\u4e3b\u7ebf\u7a0b\u548c\u7528\u6237\u7ebf\u7a0b\uff0c\u5404\u4e2a\u7ebf\u7a0b\u662f\u72ec\u7acb\u7684\uff08\u5e73\u7ea7\u5173\u7cfb\uff09\uff0c\u4e0d\u540c\u4e0ewin32\u7684\u7ebf\u7a0b\u6a21\u578b\u3002jvm\u628a\u7ebf\u7a0b\u5206\u4e3a\u524d\u53f0\u7ebf\u7a0b\u548c\u540e\u53f0\u7ebf\u7a0b\uff0c\u540e\u53f0\u7ebf\u7a0b\u5b98\u65b9\u672f\u8bed\u53eb\u5b88\u62a4\u7ebf\u7a0b\uff0cjvm\u7ed3\u675f\u7684\u6761\u4ef6\u662f\u6240\u6709\u7684\u524d\u53f0\u7ebf\u7a0b\u7ed3\u675f\u3002\u6b63\u5e38\u6784\u5efa\u7684\u7ebf\u7a0b\u90fd\u662f\u524d\u53f0\u7ebf\u7a0b\uff0c\u53ef\u4ee5\u5728\u7ebf\u7a0b\u672a\u5f00\u59cb\u524d\u8c03\u7528Thread\u7c7b\u7684setDaemon(true)\u65b9\u6cd5\u5c06\u7ebf\u7a0b\u6539\u53d8\u4e3a\u540e\u53f0\u5b88\u62a4\u7ebf\u7a0b\u3002\n<\/p>\n<p>\n\t\u60c5\u51b51\uff1a\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u4e3b\u7ebf\u7a0b\u542f\u52a8\u4e86\u5b50\u7ebf\u7a0b\uff0c\u4e3b\u7ebf\u7a0b\u3001\u5b50\u7ebf\u7a0b\u5404\u81ea\u6267\u884c\uff0c\u5f7c\u6b64\u4e0d\u53d7\u5f71\u54cd\u3002<br \/>\n\t\u5f53\u4f60\u5728run\u4e00\u4e2aJava application\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a\u65f6\u5019\u7cfb\u7edf\u4f1a\u5f00\u4e00\u4e2a\u8fdb\u7a0b\u3002\u7136\u540e\u8fd9\u4e2a\u8fdb\u7a0b\u542f\u52a8\u4e86Main\u7ebf\u7a0b\u3002Java\u8fdb\u7a0b\u786e\u5b9a\u865a\u62df\u673a\u4e2d\u6ca1\u6709\u7ebf\u7a0b\u8fd0\u884c\u7684\u65f6\u5019\uff0c\u9000\u51fa\u8fdb\u7a0b\u3002\u6216\u8005\u4e5f\u53ef\u4ee5\u7528System.exit(0);\u5f3a\u5236\u9000\u51fa\u8fdb\u7a0b<br \/>\n\t\u6309\u7167\u64cd\u4f5c\u7cfb\u7edf\u7684\u7406\u8bba\uff0c\u8fdb\u7a0b\u662f\u8d44\u6e90\u5206\u914d\u7684\u57fa\u672c\u5355\u4f4d\uff0c\u7ebf\u7a0b\u662fCPU\u8c03\u5ea6\u7684\u57fa\u672c\u5355\u4f4d\u3002\u5bf9\u4e8eCPU\u6765\u8bf4\uff0c\u5176\u5b9e\u5e76\u4e0d\u5b58\u5728java\u7684\u4e3b\u7ebf\u7a0b\u548c\u5b50\u7ebf\u7a0b\u4e4b\u5206\uff0c\u90fd\u53ea\u662f\u4e2a\u666e\u901a\u7684\u7ebf\u7a0b\u3002\u8fdb\u7a0b\u7684\u8d44\u6e90\u662f\u7ebf\u7a0b\u5171\u4eab\u7684\uff0c\u53ea\u8981\u8fdb\u7a0b\u8fd8\u5728\uff0c\u7ebf\u7a0b\u5c31\u53ef\u4ee5\u6b63\u5e38\u6267\u884c\uff0c\u6362\u53e5\u8bdd\u8bf4\u7ebf\u7a0b\u662f\u5f3a\u4f9d\u8d56\u4e8e\u8fdb\u7a0b\u7684\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u7ebf\u7a0b\u5176\u5b9e\u5e76\u4e0d\u5b58\u5728\u4e92\u76f8\u4f9d\u8d56\u7684\u5173\u7cfb\uff0c\u4e00\u4e2a\u7ebf\u7a0b\u7684\u6b7b\u4ea1\u4ece\u7406\u8bba\u4e0a\u6765\u8bf4\uff0c\u4e0d\u4f1a\u5bf9\u5176\u4ed6\u7ebf\u7a0b\u6709\u4ec0\u4e48\u5f71\u54cd\u3002<br \/>\n\t&nbsp;<br \/>\n\t\u60c5\u51b52\uff1a\u9700\u6c42\u662f\u4e3b\u7ebf\u7a0b\u6267\u884c\u7ed3\u675f\uff0c\u7531\u4e3b\u7ebf\u7a0b\u542f\u52a8\u7684\u5b50\u7ebf\u7a0b\u90fd\u7ed3\u675f<br \/>\n\t\u5728\u5b50\u7ebf\u7a0b\u672a\u5f00\u59cb\u524d\u8c03\u7528Thread\u7c7b\u7684setDaemon(true)\u65b9\u6cd5\u5c06\u5b50\u7ebf\u7a0b\u6539\u53d8\u4e3a\u540e\u53f0\u5b88\u62a4\u7ebf\u7a0b\uff0c\u8fd9\u6837\u4e3b\u7ebf\u7a0b\u6267\u884c\u5b8c\u6bd5\u540e\u4f1a\u7acb\u5373\u6740\u6b7b\u6240\u4ee5\u7684\u540e\u53f0\u5b88\u62a4\u7ebf\u7a0b<br \/>\n\tjava\u865a\u62df\u673a(\u76f8\u5f53\u4e8e\u8fdb\u7a0b)\u9000\u51fa\u7684\u65f6\u673a\u662f\uff1a\u865a\u62df\u673a\u4e2d\u6240\u6709\u5b58\u6d3b\u7684\u7ebf\u7a0b\u90fd\u662f\u5b88\u62a4\u7ebf\u7a0b\u3002\u53ea\u8981\u8fd8\u6709\u5b58\u6d3b\u7684\u975e\u5b88\u62a4\u7ebf\u7a0b\u865a\u62df\u673a\u5c31\u4e0d\u4f1a\u9000\u51fa\uff0c\u800c\u662f\u7b49\u5f85\u975e\u5b88\u62a4\u7ebf\u7a0b\u6267\u884c\u5b8c\u6bd5\uff1b\u53cd\u4e4b\uff0c\u5982\u679c\u865a\u62df\u673a\u4e2d\u7684\u7ebf\u7a0b\u90fd\u662f\u5b88\u62a4\u7ebf\u7a0b\uff0c\u90a3\u4e48\u4e0d\u7ba1\u8fd9\u4e9b\u7ebf\u7a0b\u7684\u6b7b\u6d3bjava\u865a\u62df\u673a\u90fd\u4f1a\u9000\u51fa\u3002\u8fd9\u662f\u5c5e\u4e8eJVM\u7684\u5e95\u5c42\u5b9e\u73b0\u673a\u5236\uff0c\u5e76\u4e0d\u662f\u8bf4\u4e3b\u7ebf\u7a0b\u548c\u5b50\u7ebf\u7a0b\u4e4b\u95f4\u5b58\u5728\u4f9d\u8d56\u5173\u7cfb\u3002\u8fd9\u662f\u5c5e\u4e8eJVM\u7684\u5e95\u5c42\u5b9e\u73b0\u673a\u5236\uff0c\u5e76\u4e0d\u662f\u8bf4\u4e3b\u7ebf\u7a0b\u548c\u5b50\u7ebf\u7a0b\u4e4b\u95f4\u5b58\u5728\u4f9d\u8d56\u5173\u7cfb\u3002<br 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\/>\n<\/h2>\n<ul>\n<li>\n\t\t\u7ba1\u9053\uff08\u533f\u540d\u7ba1\u9053\uff08pipe\u4eb2\u7f18\u5173\u7cfb\u7684\u8fdb\u7a0b\u901a\u4fe1\uff09\u3001\u547d\u540d\u7ba1\u9053\uff08mkfifo\/mknod\uff09\uff09\n\t<\/li>\n<li>\n\t\t\u6d88\u606f\u961f\u5217\uff1a\u662f\u57fa\u4e8e\u6d88\u606f\u7684\u3001\u7528\u65e0\u4eb2\u7f18\u5173\u7cfb\u7684\u8fdb\u7a0b\u95f4\u901a\u4fe1\uff0c\u4e3b\u8981\u51fd\u6570\uff1amsgget\u3001msgsend\u3001msgrecv\u3001msgctl\n\t<\/li>\n<li>\n\t\t\u4fe1\u53f7\u91cf\uff1a\u76f8\u5f53\u4e8e\u4e00\u628a\u4e92\u65a5\u9501\uff0c\u901a\u8fc7p\u3001v\u64cd\u4f5c\uff0c\u4e3b\u8981\u51fd\u6570\uff1asemget\u3001semop\u3001semctl\n\t<\/li>\n<li>\n\t\t\u5171\u4eab\u5185\u5b58\uff1a\u662f\u8fdb\u7a0b\u95f4\u901a\u4fe1\u901f\u5ea6\u6700\u5feb\u7684\uff0c\u6240\u4ee5\u7528\u7ecf\u5e38\u662f\u96c6\u5408\u4fe1\u53f7\u91cf\u6216\u4e92\u65a5\u9501\u6765\u5b9e\u73b0\u540c\u6b65\uff0cshmget\u3001shmat\u3001shmdt\u3001shmctl\n\t<\/li>\n<\/ul>\n<h2>\n\t\u4ec0\u4e48\u662f\u865a\u62df\u5185\u5b58\uff1f<br 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