{"id":215576,"date":"2020-11-15T07:13:46","date_gmt":"2020-11-14T23:13:46","guid":{"rendered":"http:\/\/4563.org\/?p=215576"},"modified":"2020-11-15T07:13:46","modified_gmt":"2020-11-14T23:13:46","slug":"%e4%b8%8d%e6%87%82%e5%b0%b1%e9%97%ae%ef%bc%9a%e5%85%b3%e4%ba%8e%e6%9f%a5%e7%9c%8b%e5%ae%98%e6%96%b9%e6%96%87%e6%a1%a3%e7%9a%84%e5%9b%b0%e6%83%91%e3%80%82","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=215576","title":{"rendered":"\u4e0d\u61c2\u5c31\u95ee\uff1a\u5173\u4e8e\u67e5\u770b\u5b98\u65b9\u6587\u6863\u7684\u56f0\u60d1\u3002"},"content":{"rendered":"
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\u4e0d\u61c2\u5c31\u95ee\uff1a\u5173\u4e8e\u67e5\u770b\u5b98\u65b9\u6587\u6863\u7684\u56f0\u60d1\u3002 <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : Nebo <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
\u4eca\u5929\u5b66\u4e60\u7684\u65f6\u5019\u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff0cNIO \u8d44\u6599 \u7f51\u4e0a\u4e00\u641c\uff0c\u5f88\u591a\u90fd\u5f88\u8be6\u7ec6\u7684\u8bf4\u660e\u4e86 (1)\u975e\u76f4\u63a5\u7f13\u51b2\u533a\u3001\uff08 2 \uff09\u76f4\u63a5\u7f13\u51b2\u533a \u7684\u4f7f\u7528\u3002
\u4f46\u662f\u5728\u5b98\u65b9\u6587\u6863\u4e2d\uff1a https:\/\/docs.oracle.com\/javase\/tutorial\/essential\/io\/fileio.html \u6211\u5374\u6ca1\u6709\u770b\u5230\u6709\u8bb2 \u76f4\u63a5\u7f13\u51b2\u533a\u3002
\u6309\u7167\u9053\u7406\u6765\u8bf4\u5b98\u65b9\u6587\u6863\u4e0d\u5e94\u8be5\u662f\u6700\u5168\u7684\u5417\uff0c \u6216\u8005\u8bf4\u662f\u5728\u522b\u7684\u7ae0\u8282\u91cc\u9762\u6211\u6ca1\u6ce8\u610f\u5230\u5417\u3002\u611f\u5230\u5341\u5206\u56f0\u60d1 \uff0c\u4e00\u76f4\u89c9\u5f97\u5b98\u65b9\u6587\u6863\u5e94\u8be5\u662f\u6700\u8be6\u7ec6\u7684\u3002
\u6c42\u6559\u4e00\u4e0b\u8fd9\u662f\u4ec0\u4e48\u539f\u56e0 3ks ~ <\/div>\n
\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (7<\/span>) <\/div>\n
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  • \n
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    \u8cc7\u6df1\u5927\u4f6c : lewis89 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6ca1\u5565\u539f\u56e0\uff0c\u4eba\u5bb6\u8fd9\u4e2a\u662f\u4e2a\u57fa\u7840\u7684\u6559\u7a0b\uff0c\u4f60\u975e\u8981\u4eba\u5bb6\u9762\u9762\u4ff1\u5230\u600e\u4e48\u53ef\u80fd\uff0cLinux \u6559\u7a0b\u6559\u4f60\u6587\u4ef6\u8bfb\u5199 \u4e5f\u662f\u4e0a\u6765\u5148 fd = open(
    “\/data\/path”,”w+”) write(fd) <\/p>\n

    \u4e0d\u4f1a\u4e0a\u6765\u6559\u4f60 mmap \u5427… \u53e6\u5916 mmap \u4f7f\u7528\u7684\u573a\u666f\u4e5f\u5f88\u5c11\uff0c\u5927\u90e8\u5206\u65f6\u5019 \u4e00\u6b21 IO \u62f7\u8d1d 4 \u6b21 \u5e76\u4e0d\u662f\u4e00\u4e2a\u592a\u5927\u7684\u95ee\u9898\uff0c\u9664\u975e\u4f60\u786e\u5b9e\u5728\u9ad8\u6027\u80fd\u573a\u666f\u9700\u8981\u53bb\u5927\u91cf\u4f20\u8f93\u6570\u636e <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : yaphets666 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6b63\u5e38 \u5f88\u591a\u5de5\u5177 \u6846\u67b6\u90fd\u662f\u8fd9\u6837\u7684 \u9762\u9762\u4ff1\u5230\u4ecb\u7ecd\u6bcf\u4e00\u4e2a\u6982\u5ff5 \u6bcf\u4e00\u4e2a api \u7684\u6587\u6863 \u6781\u5c11 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Nebo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @yaphets666 \u55ef\u3002\u6211\u7684\u56f0\u60d1\u5728\u4e8e\uff0c\u8fd9\u6837\u7684\u8bdd\u3002\u5728\u6700\u521d\u53ea\u6709\u5b98\u65b9\u6587\u6863\u7684\u65f6\u5019\uff0c\u5176\u4ed6\u4eba\u662f\u5982\u4f55\u6574\u7406\u8fd9\u4e9b\u8d44\u6599\u7684\u5462\u3002 \u662f\u901a\u8fc7\u9605\u8bfb\u5b98\u65b9 api \u3001\u9605\u8bfb\u6e90\u7801\u4e4b\u540e\u7406\u6e05\u8109\u7edc\u505a\u7684\u603b\u7ed3\u5417 –\u611f\u89c9\u597d\u96be\u5440\u3002\u3002 \u4e3b\u8981\u662f\u60f3\u5b66\u4e60\u4e0b\u522b\u4eba\u7684\u5b66\u4e60\u65b9\u6cd5\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : SWALLOWW <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u4e5f\u6709\u8fd9\u6837\u7684\u56f0\u60d1\u3002\u3002\u4e00\u6709\u95ee\u9898\u522b\u4eba\u5c31\u80fd\u544a\u8bc9\u4f60\u56e0\u4e3a\u5e95\u5c42\u5565\u5565\u5565\u6709\u95ee\u9898\uff0c\u5b98\u65b9\u6587\u6863\u90fd\u6ca1\u6709\u4f60\u5728\u54ea\u770b\u7684\u5462 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : leo2menhui <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5176\u5b9e\u6211\u4e5f\u6709\u8fd9\u6837\u7684\u56f0\u60d1 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Nebo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @lewis89 \u55ef\u55ef\uff0c\u7136\u540e\u6211\u7684\u56f0\u60d1\u5c31\u662f\u8fd9\u7c7b\u95ee\u9898\uff0c \u5b98\u7f51\u4e0a\u65e2\u7136\u6ca1\u6709\u63d0\u5230\u3002\u90a3\u522b\u4eba\u662f\u600e\u4e48\u603b\u7ed3\u51fa\u6765\u7684\u5462\u3002 \u60f3\u4e86\u89e3\u4e86\u89e3\u522b\u4eba\u7684\u5b66\u4e60\u65b9\u6cd5\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : lewis89 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Nebo #6 \u522b\u4eba\u600e\u4e48\u603b\u7ed3\u51fa\u6765\u7684\uff1f\u5176\u5b9e\u6ca1\u5565\u603b\u7ed3\u51fa\u6765\u7684\uff0c\u65e0\u975e\u5c31\u662f\u5bf9\u5e95\u5c42\u5185\u6838\u5b9e\u73b0\u8ddf\u64cd\u4f5c\u7cfb\u7edf\u539f\u7406\u7684\u4e86\u89e3\uff0c\u56e0\u4e3a\u5927\u90e8\u5206\u79d1\u73ed\u6bd5\u4e1a\u7684\u90fd\u8bfb\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u539f\u7406\u8ddf\u4f53\u7cfb\u7ed3\u6784\uff0c\u867d\u7136\u5185\u6838\u5b9e\u73b0\u7ec6\u8282\u5f88\u591a\uff0c\u4f46\u662f\u539f\u7406\u5e76\u4e0d\u662f\u592a\u590d\u6742\uff0c\u6709\u5174\u8da3\u53ef\u4ee5\u53bb\u4e86\u89e3\u4e00\u4e0b\u4e24\u672c\u4e66 Unix \u73af\u5883\u9ad8\u7ea7\u7f16\u7a0b Linux \u7f16\u7a0b\u624b\u518c CSAPP \u64cd\u4f5c\u7cfb\u7edf\u539f\u7406 \u8bfb\u5b8c\u8fd9\u51e0\u672c\u57fa\u672c\u4e0a\u4f53\u7cfb\u7ed3\u6784\u5c31\u660e\u4e86\uff0c\u4e0a\u5934\u5c01\u88c5\u7684\u4e1c\u897f\u5c31\u90a3\u4e48\u56de\u4e8b\u3002<\/p>\n

    \u56e0\u4e3a\u5927\u90e8\u5206\u5e94\u7528\u5c42\u7f16\u7a0b \u662f\u7528\u4e0d\u5230 direct memory \u7684\uff0c \u4e5f\u5c31\u662f\u8bf4\u4e00\u6b21 IO \u81f3\u5c11 \u5199-\u62f7\u8d1d 2 \u6b21 \u8bfb-\u62f7\u8d1d 2 \u6b21\uff0c\u4f46\u662f\u8fd9\u4e2a\u6d88\u8017\u5bf9\u5927\u90e8\u5206\u5e94\u7528\u6765\u8bf4\u6839\u672c\u5c31\u4e0d\u7b97\u662f\u4e00\u4e2a\u4e8b\u60c5\uff0c\u4f60\u8981\u5e94\u628a\u8fd9\u4e2a\u62bd\u8c61\u53bb\u6389\u662f\u6ca1\u6709\u610f\u4e49\u7684\uff0c\u5c31\u50cf\u6211\u7528\u7684\u8fd9\u4e2a Chrome \u6d4f\u89c8\u5668\uff0c\u4f60\u8bf4\u5b83\u4e0b\u8f7d V2EX 10mb+ \u7684\u7f51\u7edc\u6570\u636e \u4ece\u5185\u6838\u62f7\u8d1d\u4e24\u6b21\u5230\u7528\u6237\u6001 \u7b97\u4e2a\u4e8b\u60c5\u5417\uff1f \u5185\u5b58\u603b\u7ebf\u901f\u5ea6\u5feb\u5f97\u5f88\uff0c\u6839\u672c\u6ca1\u5fc5\u8981\u53bb\u4f18\u5316\u8fd9\u4e2a\u4e1c\u897f\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n","protected":false},"excerpt":{"rendered":"

    \u4e0d\u61c2\u5c31\u95ee\uff1a\u5173\u4e8e\u67e5\u770b\u5b98\u65b9\u6587\u6863\u7684\u56f0\u60d1\u3002…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/215576"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=215576"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/215576\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=215576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=215576"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=215576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}