{"id":2546,"date":"2018-03-01T15:09:33","date_gmt":"2018-03-01T07:09:33","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=2546"},"modified":"2018-03-01T15:09:33","modified_gmt":"2018-03-01T07:09:33","slug":"jvm%e5%86%85%e5%ad%98%e5%88%92%e5%88%86%e5%92%8cjava%e8%99%9a%e6%8b%9f%e6%9c%ba%e8%a7%84%e8%8c%83","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=2546","title":{"rendered":"JVM\u5185\u5b58\u5212\u5206\u548cJAVA\u865a\u62df\u673a\u89c4\u8303"},"content":{"rendered":"

\n\t\u6709\u4e9b\u4f7f\u7528\u5176\u5b83\u8bed\u8a00\u5f00\u53d1\u7684\u7a0b\u5e8f\u5458\uff0c\u7ed9JAVA\u7a0b\u5e8f\u5458\u6263\u4e0a\u4e86\u4e00\u4e2a“\u4e0d\u61c2\u5185\u5b58”\u7684\u5e3d\u5b50\uff0c\u8fd9\u7740\u5b9e\u6709\u70b9\u8ba9\u4eba\u96be\u4ee5\u63a5\u53d7\u3002\u6bd5\u7adfJAVA\u5f53\u4e2d\u6ca1\u6709malloc\u548cdelete\u3001\u6ca1\u6709\u6790\u6784\u51fd\u6570\u3001\u6ca1\u6709\u6307\u9488\uff0c\u521a\u5f00\u59cb\u63a5\u89e6JAVA\u7684\u7a0b\u5e8f\u5458\u4eec\u53c8\u600e\u4e48\u53ef\u80fd\u63a5\u89e6\u5185\u5b58\u8fd9\u4e00\u90e8\u5206\u5462\uff0c\u66f4\u4f55\u51b5\u6709\u4e0d\u5c11JAVA\u7a0b\u5e8f\u5458\u8fd8\u662f\u8df3\u4e86\u4e13\u4e1a\u534a\u8def\u51fa\u5bb6\u7684\u670b\u53cb\u3002\n<\/p>\n

\n\t\u4e0d\u8fc7\u4e8b\u5b9e\u5c3d\u7ba1\u96be\u4ee5\u63a5\u53d7\uff0c\u4f46\u4e5f\u786e\u5b9e\u6709\u4e0d\u5c11JAVA\u7a0b\u5e8f\u5458\u5bf9\u5185\u5b58\u8fd9\u90e8\u5206\u53ef\u8c13\u4e00\u7a8d\u4e0d\u77e5\uff0c\u5c3d\u7ba1\u638c\u63e1\u5185\u5b58\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u6216\u8bb8\u5e76\u4e0d\u80fd\u7ed9\u5e73\u65f6\u7684\u5f00\u53d1\u5e26\u6765\u7ffb\u5929\u8986\u5730\u7684\u53d8\u5316\u548c\u597d\u5904\uff0c\u4e0d\u8fc7\u5b83\u4ecd\u7136\u4f1a\u6f5c\u79fb\u9ed8\u5316\u7684\u63d0\u9ad8\u4f60\u7684\u6280\u672f\u6c34\u51c6\uff0c\u8fd9\u4e00\u70b9\u5728\u4e86\u89e3\u5b8c\u5185\u5b58\u7ba1\u7406\u4e4b\u540e\uff0c\u76f8\u4fe1\u5404\u4f4d\u5c31\u4f1a\u6df1\u6709\u4f53\u4f1a\u4e86\u3002\n<\/p>\n

\n\t\u5185\u5b58\u5212\u5206
\n<\/h2>\n

\n\t\u8c08\u5230\u5185\u5b58\u8fd9\u4e00\u8bcd\u6c47\uff0c\u5b83\u662f\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\u624d\u6709\u7684\u6570\u636e\u5b58\u50a8\u533a\u57df\uff0c\u800c\u5bf9\u4e8e\u8fd9\u4e00\u5757\u533a\u57df\u7684\u5212\u5206\uff0c\u5404\u4e2a\u865a\u62df\u673a\u6709\u5404\u81ea\u7684\u5212\u5206\u65b9\u5f0f\uff0c\u4e0d\u8fc7\u5b83\u4eec\u90fd\u5fc5\u987b\u9075\u4eceJAVA\u865a\u62df\u673a\u7684\u57fa\u672c\u89c4\u8303\u53bb\u5b9e\u73b0\u3002\n<\/p>\n

\n\t\u865a\u62df\u673a\u89c4\u8303\u4e2d\uff0c\u5c06\u5185\u5b58\u5212\u5206\u4e3a\u516d\u5927\u90e8\u5206\uff0c\u5206\u522b\u662fPC\u5bc4\u5b58\u5668\u3001JAVA\u865a\u62df\u673a\u6808\u3001JAVA\u5806\u3001\u65b9\u6cd5\u533a\u3001\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u4ee5\u53ca\u672c\u5730\u65b9\u6cd5\u6808\u3002\n<\/p>\n

\n\tJAVA\u865a\u62df\u673a\u89c4\u8303\u4e0eJAVA\u865a\u62df\u673a
\n<\/h2>\n

\n\t\u8fd9\u91cc\u8fd8\u9700\u8981\u89e3\u91ca\u4e00\u4e0bJAVA\u865a\u62df\u673a\u89c4\u8303\u548cJAVA\u865a\u62df\u673a\u7684\u533a\u522b\uff0c\u987e\u540d\u601d\u4e49\uff0cJAVA\u865a\u62df\u673a\u89c4\u8303\u662f\u4e00\u79cd\u5bf9JAVA\u865a\u62df\u673a\u5b9e\u73b0\u7684\u89c4\u8303\u8981\u6c42\uff0c\u662f\u7531oracle\u5236\u5b9a\u7684\uff0c\u800c\u6211\u4eec\u5e73\u65f6\u5e38\u8bf4\u7684JAVA\u865a\u62df\u673a\u4e00\u822c\u662f\u6307\u7684\u4e00\u79cd\u5177\u4f53\u7684JAVA\u865a\u62df\u673a\u89c4\u8303\u7684\u5b9e\u73b0\u3002\u6bd4\u5982\u6211\u4eec\u6700\u7ecf\u5e38\u4f7f\u7528\u7684JAVA\u865a\u62df\u673ahotspot\uff0c\u5176\u5b9eJAVA\u865a\u62df\u673a\u8fd8\u6709\u5f88\u591a\u79cd\u5b9e\u73b0\uff0c\u751a\u81f3\u5982\u679c\u4f60\u5bf9JAVA\u865a\u62df\u673a\u89c4\u8303\u6709\u4e86\u6df1\u5165\u7684\u4e86\u89e3\u800c\u4e14\u5bf9\u6b64\u6709\u5174\u8da3\u7684\u8bdd\uff0c\u53ef\u4ee5\u5199\u4e00\u4e2a\u81ea\u5df1\u7684JAVA\u865a\u62df\u673a\uff0c\u5f53\u7136\u8fd9\u5176\u4e2d\u7684\u96be\u5ea6\u4e0d\u96be\u60f3\u8c61\u3002\n<\/p>\n

\n\tJVM \u7ed3\u6784\u56fe
\n<\/h2>\n

\n\t\u4e0b\u56fe\u662f\u5f15\u7528\u4e8e\u767e\u5ea6\u6587\u5e93\u7684\u4e00\u5f20JVM\u7684\u7ed3\u6784\u56fe\uff0c\u7531\u4e8e\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u662f\u7531\u65b9\u6cd5\u533a\u5206\u914d\u51fa\u6765\u7684\u533a\u57df\uff0c\u6240\u4ee5\u6b64\u56fe\u5f53\u4e2d\u6ca1\u6709\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u3002\n<\/p>\n

\n\t\"JVM\n<\/p>\n

\n\t\u5185\u5b58\u533a\u57df\u8be6\u89e3
\n<\/h2>\n

\n\t\u9488\u5bf9\u4e0a\u9762\u8fd9\u5f20\u56fe\uff0c\u5185\u5b58\u5c31\u662f\u6307\u7684\u77e9\u5f62\u6846\u5f53\u4e2d\u8fd0\u884c\u671f\u6570\u636e\u533a\u8fd9\u90e8\u5206\uff0c\u4e0b\u9762\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0b\u5404\u4e2a\u90e8\u5206\u7684\u4f5c\u7528\uff1a\n<\/p>\n

    \n
  1. \n

    \n\t\t\tPC\u5bc4\u5b58\u5668\uff08\u7ebf\u7a0b\u72ec\u6709\uff09\uff1a\u5168\u79f0\u662f\u7a0b\u5e8f\u8ba1\u6570\u5bc4\u5b58\u5668\uff0c\u5b83\u8bb0\u8f7d\u7740\u6bcf\u4e00\u4e2a\u7ebf\u7a0b\u5f53\u524d\u8fd0\u884c\u7684JAVA\u65b9\u6cd5\u7684\u5730\u5740\uff0c\u5982\u679c\u662f\u5f53\u524d\u6267\u884c\u7684\u662f\u672c\u5730\u65b9\u6cd5\uff0c\u5219\u7a0b\u5e8f\u8ba1\u6570\u5668\u4f1a\u662f\u4e00\u4e2a\u7a7a\u5730\u5740\u3002\u5b83\u7684\u4f5c\u7528\u5c31\u662f\u7528\u6765\u652f\u6301\u591a\u7ebf\u7a0b\uff0c\u7ebf\u7a0b\u7684\u963b\u585e\u3001\u6062\u590d\u3001\u6302\u8d77\u7b49\u4e00\u7cfb\u5217\u64cd\u4f5c\uff0c\u76f4\u89c2\u7684\u60f3\u8c61\u4e00\u4e0b\uff0c\u8981\u662f\u6ca1\u6709\u8bb0\u4f4f\u6bcf\u4e2a\u7ebf\u7a0b\u5f53\u524d\u8fd0\u884c\u7684\u4f4d\u7f6e\uff0c\u53c8\u5982\u4f55\u6062\u590d\u5462\u3002\u4f9d\u636e\u8fd9\u4e00\u70b9\uff0c\u6bcf\u4e00\u4e2a\u7ebf\u7a0b\u90fd\u6709\u4e00\u4e2aPC\u5bc4\u5b58\u5668\uff0c\u4e5f\u5c31\u662f\u8bf4PC\u5bc4\u5b58\u5668\u662f\u7ebf\u7a0b\u72ec\u6709\u7684\u3002\n\t\t<\/p>\n<\/li>\n

  2. \n

    \n\t\t\tJAVA\u865a\u62df\u673a\u6808\uff08\u7ebf\u7a0b\u72ec\u6709\uff09\uff1aJAVA\u865a\u62df\u673a\u6808\u662f\u5728\u521b\u5efa\u7ebf\u7a0b\u7684\u540c\u65f6\u521b\u5efa\u7684\uff0c\u7528\u4e8e\u5b58\u50a8\u6808\u5e27\uff0cJAVA\u865a\u62df\u673a\u6808\u4e5f\u662f\u7ebf\u7a0b\u72ec\u6709\u7684\u3002\n\t\t<\/p>\n

      \n
    • \n\t\t\t\t\u6808\u5e27\uff1a\u7b80\u5355\u70b9\u8bf4\uff0c\u53ef\u4ee5\u89e3\u91ca\u4e3a\u662f\u4e00\u4e2a\u65b9\u6cd5\u8fd0\u884c\u65f6\uff0c\u4e34\u65f6\u6570\u636e\u7684\u5b58\u50a8\u533a\u57df\uff0c\u5177\u4f53\u70b9\u8bf4\uff0c\u5b83\u91cc\u9762\u5305\u62ec\u4e86\u6570\u636e\u548c\u90e8\u5206\u7684\u8fc7\u7a0b\u7ed3\u679c\uff0c\u4e0e\u6b64\u540c\u65f6\uff0c\u5b83\u53c8\u80a9\u8d1f\u7740\u5904\u7406\u65b9\u6cd5\u8fd4\u56de\u503c\u3001\u52a8\u6001\u94fe\u63a5\u4ee5\u53ca\u5f02\u5e38\u5206\u6d3e\u7684\u4efb\u52a1\u3002\u6808\u5e27\u662f\u968f\u7740\u65b9\u6cd5\u7684\u521b\u5efa\u800c\u521b\u5efa\uff0c\u968f\u7740\u65b9\u6cd5\u7684\u7ed3\u675f\u800c\u9500\u6bc1\uff0c\u5982\u679c\u65b9\u6cd5\u629b\u51fa\u5f02\u5e38\uff0c\u4e5f\u7b97\u65b9\u6cd5\u7ed3\u675f\u3002\u7136\u800c\u5728\u6bcf\u4e00\u4e2a\u6808\u5e27\u4e2d\uff0c\u90fd\u6709\u7740\u81ea\u5df1\u7684\u5c40\u90e8\u53d8\u91cf\u8868\u4ee5\u53ca\u64cd\u4f5c\u6570\u6808\u4ee5\u53ca\u5bf9\u5f53\u524d\u7c7b\u7684\u8fd0\u884c\u65f6\u5e38\u91cf\u6c60\u7684\u5f15\u7528\u3002\n\t\t\t<\/li>\n
    • \n\t\t\t\t\u5c40\u90e8\u53d8\u91cf\u8868\uff1a\u5b83\u662f\u4e00\u4e2a\u65b9\u6cd5\u5c40\u90e8\u53d8\u91cf\u7684\u5217\u8868\uff0c\u662f\u5728\u7f16\u8bd1\u65f6\u671f\u5c31\u5199\u5165\u4e86class\u6587\u4ef6\u5f53\u4e2d\u3002\u7b80\u5355\u7684\u7406\u89e3\uff0c\u53ef\u4ee5\u5c06\u5b83\u7406\u89e3\u4e3a\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\uff0c\u800c\u91cc\u9762\u6309\u7167\u7d22\u5f150\u5230length-1\u5206\u522b\u5bf9\u5e94\u4e8e\u6bcf\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf\uff0c\u7279\u522b\u7684\uff0c\u5982\u679c\u662f\u5b9e\u4f8b\u65b9\u6cd5\u7684\u5c40\u90e8\u53d8\u91cf\u8868\uff0c\u7b2c0\u4e2a\u5c40\u90e8\u53d8\u91cf\u4f1a\u662f\u4e00\u4e2a\u6307\u5411\u5f53\u524d\u5b9e\u4f8b\u7684\u5f15\u7528\uff0c\u4e5f\u5c31\u662fthis\u5173\u952e\u5b57\uff0c\u5176\u4f59\u7684\u5c40\u90e8\u53d8\u91cf\u5219\u4ece\u7d22\u5f151\u5f00\u59cb\u3002\n\t\t\t<\/li>\n
    • \n\t\t\t\t\u64cd\u4f5c\u6570\u6808\uff1a\u5b83\u662f\u4e00\u4e2a\u540e\u8fdb\u5148\u51fa\uff08LIFO\uff09\u6808\uff0c\u800c\u5b83\u7684\u957f\u5ea6\u4e5f\u662f\u5728\u7f16\u8bd1\u65f6\u671f\u5c31\u5199\u5165\u4e86class\u6587\u4ef6\u5f53\u4e2d\uff0c\u662f\u56fa\u5b9a\u7684\u3002\u5b83\u7684\u4f5c\u7528\u5c31\u662f\u63d0\u4f9b\u5b57\u8282\u7801\u6307\u4ee4\u64cd\u4f5c\u53d8\u91cf\u8ba1\u7b97\u7684\u7a7a\u95f4\uff0c\u6bd4\u5982\u7b80\u5355\u7684\uff0c\u5bf9\u4e8eint a=9\u8fd9\u53e5\u8bdd\u6765\u8bf4\uff0c\u5c31\u9700\u8981\u5148\u5c069\u538b\u5165\u64cd\u4f5c\u6570\u6808\uff0c\u518d\u5c069\u8d4b\u7ed9a\u8fd9\u4e2a\u53d8\u91cf\u3002\n\t\t\t<\/li>\n<\/ul>\n<\/li>\n
    • \n

      \n\t\t\tJAVA\u5806\uff08\u5168\u5c40\u5171\u4eab\uff09\uff1a\u8fd9\u4e00\u90e8\u5206\u662fJAVA\u5185\u5b58\u4e2d\u6700\u91cd\u8981\u7684\u4e00\u90e8\u5206\uff0c\u4e4b\u6240\u4ee5\u8bf4\u662f\u6700\u91cd\u8981\u7684\u4e00\u90e8\u5206\uff0c\u5e76\u4e0d\u662f\u56e0\u4e3a\u5b83\u7684\u91cd\u8981\u6027\uff0c\u800c\u662f\u6307\u4f5c\u4e3a\u5f00\u53d1\u4eba\u5458\u6700\u5e94\u8be5\u5173\u6ce8\u7684\u4e00\u90e8\u5206\u3002\u5b83\u968f\u7740JAVA\u865a\u62df\u673a\u7684\u542f\u52a8\u521b\u5efa\uff0c\u50a8\u5b58\u7740\u6240\u6709\u5bf9\u8c61\u5b9e\u4f8b\u4ee5\u53ca\u6570\u7ec4\u5bf9\u8c61\uff0c\u800c\u4e14\u5185\u7f6e\u4e86“\u81ea\u52a8\u5185\u5b58\u7ba1\u7406\u7cfb\u7edf”\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u5e38\u8bf4\u7684\u5783\u573e\u641c\u96c6\u5668\uff08GC\uff09\u3002JAVA\u5806\u4e2d\u7684\u5185\u5b58\u91ca\u653e\u662f\u4e0d\u53d7\u5f00\u53d1\u4eba\u5458\u63a7\u5236\u7684\uff0c\u5b8c\u5168\u7531JAVA\u865a\u62df\u673a\u4e00\u624b\u64cd\u529e\u3002\u5bf9\u4e8eJAVA\u865a\u62df\u673a\u5982\u4f55\u5b9e\u73b0\u5783\u573e\u641c\u96c6\u5668\uff0cJAVA\u865a\u62df\u673a\u89c4\u8303\u6ca1\u6709\u660e\u786e\u7684\u89c4\u5b9a\uff0c\u4e5f\u6b63\u56e0\u5982\u6b64\uff0c\u6211\u4eec\u5e73\u65f6\u4f7f\u7528\u7684JAVA\u865a\u62df\u673a\u4e2d\u63d0\u4f9b\u4e86\u8bb8\u591a\u79cd\u5783\u573e\u641c\u96c6\u5668\uff0c\u5b83\u4eec\u91c7\u7528\u4e0d\u540c\u7684\u7b97\u6cd5\u4ee5\u53ca\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5df2\u6ee1\u8db3\u591a\u65b9\u9762\u7684\u6027\u80fd\u9700\u6c42\u3002\n\t\t<\/p>\n<\/li>\n

    • \n

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    • \n

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      \n\t\u5185\u5b58\u7ba1\u7406
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      \"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/<\/p>

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