{"id":39398,"date":"2025-05-23T17:01:31","date_gmt":"2025-05-23T09:01:31","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/39398.html"},"modified":"2025-05-23T17:01:31","modified_gmt":"2025-05-23T09:01:31","slug":"%e3%80%90%e5%af%bb%e6%89%belinux%e7%9a%84%e5%a5%a5%e7%a7%98%e3%80%91%e7%ac%ac%e4%b8%83%e7%ab%a0%ef%bc%9a%e8%99%9a%e6%8b%9f%e5%9c%b0%e5%9d%80%e7%a9%ba%e9%97%b4","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/39398.html","title":{"rendered":"\u3010\u5bfb\u627eLinux\u7684\u5965\u79d8\u3011\u7b2c\u4e03\u7ae0\uff1a\u865a\u62df\u5730\u5740\u7a7a\u95f4"},"content":{"rendered":"

\"QQ20250519-134735\"<\/p>\n

\u524d\u8a00<\/h3>\n

\u672c\u4e13\u9898\u5c06\u57fa\u4e8eLinux\u64cd\u4f5c\u7cfb\u7edf\u6765\u5e26\u9886\u5927\u5bb6\u5b66\u4e60\u64cd\u4f5c\u7cfb\u7edf\u65b9\u9762\u7684\u77e5\u8bc6\u4ee5\u53ca\u5b66\u4e60\u4f7f\u7528Linux\u64cd\u4f5c\u7cfb\u7edf\u3002\u4e0a\u4e00\u7ae0\u6211\u4eec\u7b80\u5355\u8ba4\u8bc6\u4e86\u73af\u5883\u53d8\u91cf，\u672c\u7ae0\u5c06\u8bb2\u89e3\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u53e6\u4e00\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\u2014\u2014\u7a0b\u5e8f\u5730\u5740\u7a7a\u95f4\u3002<\/p>\n

1. \u521d\u6b65\u8ba4\u8bc6<\/h3>\n

\u4e4b\u524d\u5728\u6211\u4eec\u5b66\u4e60C\u8bed\u8a00\u548cC++\u65f6\u6211\u4eec\u77e5\u9053，\u5728\u6211\u4eec\u7684\u7a0b\u5e8f\u4e2d\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u5b58\u50a8\u5728\u4e0d\u540c\u7684\u5185\u5b58\u533a\u57df\u4e2d，\u5982\u4e0b\u56fe\u6240\u793a（\u4ee532\u4f4d\u5e73\u53f0\u4e3a\u4f8b）：<\/p>\n

\"QQ20250520-194119\"<\/p>\n

\u6211\u4eec\u518d\u6b21\u6765\u8ba4\u8bc6\u4e00\u4e0b\u6bcf\u4e2a\u533a\u57df\u7684\u540d\u79f0\u4ee5\u53ca\u4fdd\u5b58\u4ec0\u4e48\u7c7b\u578b\u7684\u6570\u636e：<\/p>\n\n\u533a\u57df\u4e0e\u4e0a\u56fe\u5bf9\u5e94\u5b58\u653e\u5185\u5bb9\u7c7b\u578b\u7279\u70b9\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n\n\n
\u5185\u6838\u7a7a\u95f4<\/td>\n\u5185\u6838\u7a7a\u95f4<\/td>\n\u5185\u6838\u4ee3\u7801\u3001\u5185\u6838\u6570\u636e\u7ed3\u6784\u3001\u9a71\u52a8\u3001\u7cfb\u7edf\u8c03\u7528\u63a5\u53e3\u7b49<\/td>\n\u7528\u6237\u6001\u4e0d\u53ef\u8bbf\u95ee，\u7cfb\u7edf\u4fdd\u62a4\u533a<\/td>\n<\/tr>\n
\u6808（Stack）<\/td>\n\u6808<\/td>\n\u51fd\u6570\u8c03\u7528\u6808\u5e27\u3001\u5c40\u90e8\u53d8\u91cf\u3001\u51fd\u6570\u53c2\u6570\u3001\u8fd4\u56de\u5730\u5740\u7b49<\/td>\n\u5411\u4e0b\u589e\u957f，\u81ea\u52a8\u5206\u914d\u548c\u91ca\u653e<\/td>\n<\/tr>\n
\u5171\u4eab\u5e93\u533a\u57df<\/td>\n\u5171\u4eab\u533a<\/td>\n\u52a8\u6001\u94fe\u63a5\u5e93（\u5982libc.so）<\/td>\n\u6620\u5c04\u65b9\u5f0f\u52a0\u8f7d，\u53ef\u4f9b\u591a\u4e2a\u8fdb\u7a0b\u5171\u4eab<\/td>\n<\/tr>\n
\u5806（Heap）<\/td>\n\u5806<\/td>\n\u52a8\u6001\u5206\u914d\u7684\u53d8\u91cf（\u5982：malloc\u3001new）<\/td>\n\u5411\u4e0a\u589e\u957f，\u7531\u7a0b\u5e8f\u5458\u63a7\u5236\u91ca\u653e<\/td>\n<\/tr>\n
BSS\u6bb5<\/td>\n\u672a\u521d\u59cb\u5316\u6570\u636e<\/td>\n\u672a\u521d\u59cb\u5316\u7684\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf（\u9ed8\u8ba4\u4e3a0）<\/td>\n\u52a0\u8f7d\u65f6\u7cfb\u7edf\u81ea\u52a8\u6e05\u96f6<\/td>\n<\/tr>\n
\u6570\u636e\u6bb5（Data）<\/td>\n\u521d\u59cb\u5316\u6570\u636e<\/td>\n\u5df2\u521d\u59cb\u5316\u7684\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf<\/td>\n\u6765\u81ea\u7a0b\u5e8f\u7684\u6570\u636e\u90e8\u5206<\/td>\n<\/tr>\n
\u4ee3\u7801\u6bb5（Text）<\/td>\n\u6b63\u6587\u4ee3\u7801<\/td>\n\u53ef\u6267\u884c\u6307\u4ee4（\u51fd\u6570\u4f53\u3001\u4e3b\u51fd\u6570\u3001\u5e93\u51fd\u6570）<\/td>\n\u6743\u9650\u901a\u5e38\u4e3a\u53ea\u8bfb，\u9632\u6b62\u88ab\u4fee\u6539<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5149\u770b\u663e\u7136\u662f\u4e0d\u591f\u7684，\u4e0b\u9762\u8ba9\u6211\u4eec\u7528\u4ee3\u7801\u8fdb\u884c\u9a8c\u8bc1，\u770b\u770b\u8fd9\u4e9b\u662f\u4e0d\u662f\u7ed3\u8bba\u662f\u4e0d\u662f\u6b63\u786e\u7684：<\/p>\n

#<\/span>include<\/span> <stdio.h><\/span><\/span>
\n#<\/span>include<\/span> <unistd.h><\/span><\/span>
\n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
\nint<\/span> g_unval;<\/span>
\nint<\/span> g_val =<\/span> 100<\/span>;<\/span>
\nint<\/span> main<\/span>(<\/span>int<\/span> argc,<\/span> char<\/span> *<\/span>argv[<\/span>]<\/span>,<\/span> char<\/span> *<\/span>env[<\/span>]<\/span>)<\/span>
\n{<\/span>
\n const<\/span> char<\/span> *<\/span>str =<\/span> "helloworld"<\/span>;<\/span>
\n printf<\/span>(<\/span>"code addr: %p\\\\n"<\/span>,<\/span> main)<\/span>;<\/span>
\n printf<\/span>(<\/span>"init global addr: %p\\\\n"<\/span>,<\/span> &<\/span>g_val)<\/span>;<\/span>
\n printf<\/span>(<\/span>"uninit global addr: %p\\\\n"<\/span>,<\/span> &<\/span>g_unval)<\/span>;<\/span>
\n static<\/span> int<\/span> test =<\/span> 10<\/span>;<\/span>
\n char<\/span> *<\/span>heap_mem =<\/span> (<\/span>char<\/span>*<\/span>)<\/span>malloc<\/span>(<\/span>10<\/span>)<\/span>;<\/span>
\n char<\/span> *<\/span>heap_mem1 =<\/span> (<\/span>char<\/span>*<\/span>)<\/span>malloc<\/span>(<\/span>10<\/span>)<\/span>;<\/span>
\n char<\/span> *<\/span>heap_mem2 =<\/span> (<\/span>char<\/span>*<\/span>)<\/span>malloc<\/span>(<\/span>10<\/span>)<\/span>;<\/span>
\n char<\/span> *<\/span>heap_mem3 =<\/span> (<\/span>char<\/span>*<\/span>)<\/span>malloc<\/span>(<\/span>10<\/span>)<\/span>;<\/span>
\n printf<\/span>(<\/span>"heap addr: %p\\\\n"<\/span>,<\/span> heap_mem)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"heap addr: %p\\\\n"<\/span>,<\/span> heap_mem1)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"heap addr: %p\\\\n"<\/span>,<\/span> heap_mem2)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"heap addr: %p\\\\n"<\/span>,<\/span> heap_mem3)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"test static addr: %p\\\\n"<\/span>,<\/span> &<\/span>test)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"stack addr: %p\\\\n"<\/span>,<\/span> &<\/span>heap_mem)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"stack addr: %p\\\\n"<\/span>,<\/span> &<\/span>heap_mem1)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"stack addr: %p\\\\n"<\/span>,<\/span> &<\/span>heap_mem2)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"stack addr: %p\\\\n"<\/span>,<\/span> &<\/span>heap_mem3)<\/span>;<\/span> \/\/heap_mem(0), &heap_mem(1)<\/span>
\n printf<\/span>(<\/span>"read only string addr: %p\\\\n"<\/span>,<\/span> str)<\/span>;<\/span>
\n for<\/span>(<\/span>int<\/span> i =<\/span> 0<\/span> ;<\/span>i <<\/span> argc;<\/span> i++<\/span>)<\/span>
\n {<\/span>
\n printf<\/span>(<\/span>"argv[%d]: %p\\\\n"<\/span>,<\/span> i,<\/span> argv[<\/span>i]<\/span>)<\/span>;<\/span>
\n }<\/span>
\n for<\/span>(<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> env[<\/span>i]<\/span>;<\/span> i++<\/span>)<\/span>
\n {<\/span>
\n printf<\/span>(<\/span>"env[%d]: %p\\\\n"<\/span>,<\/span> i,<\/span> env[<\/span>i]<\/span>)<\/span>;<\/span>
\n }<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u8fd0\u884c\u7ed3\u679c：<\/p>\n

\"QQ20250520-195520\"<\/p>\n

\u53ef\u4ee5\u770b\u5230\u8fd9\u4e9b\u6570\u636e\u5bf9\u5e94\u7684\u5730\u5740\u7684\u5927\u5c0f\u53d8\u5316\u4e0e\u4e0a\u56fe\u662f\u4e00\u81f4\u7684\u3002\u90a3\u4e48，\u8fd9\u4e9b\u5730\u5740\u662f\u6211\u4eec\u7684\u6570\u636e\u5728\u5185\u5b58\u4e0a\u7684\u771f\u5b9e\u5730\u5740\u5417？<\/p>\n

2. \u6df1\u5165\u4e86\u89e3<\/h3>\n

\u4fd7\u8bdd\u8bf4\u7684\u597d：\u201c\u5b9e\u8df5\u662f\u68c0\u9a8c\u771f\u7406\u7684\u552f\u4e00\u6807\u51c6\u3002\u201d\u4e0b\u9762，\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u6bb5\u4ee3\u7801\u6765\u63a2\u7a76\u4e00\u4e0b\u8fd9\u4e2a\u95ee\u9898：<\/p>\n

#<\/span>include<\/span> <stdio.h><\/span><\/span>
\n#<\/span>include<\/span> <unistd.h><\/span><\/span>
\n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
\nint<\/span> g_val =<\/span> 0<\/span>;<\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\n pid_t<\/span> id =<\/span> fork<\/span>(<\/span>)<\/span>;<\/span>
\n if<\/span>(<\/span>id <<\/span> 0<\/span>)<\/span>{<\/span>
\n perror<\/span>(<\/span>"fork"<\/span>)<\/span>;<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n }<\/span>
\n else<\/span> if<\/span>(<\/span>id ==<\/span> 0<\/span>)<\/span>{<\/span> \/\/child<\/span>
\n printf<\/span>(<\/span>"child[%d]: %d : %p\\\\n"<\/span>,<\/span> getpid<\/span>(<\/span>)<\/span>,<\/span> g_val,<\/span> &<\/span>g_val)<\/span>;<\/span>
\n }<\/span>else<\/span>{<\/span> \/\/parent<\/span>
\n printf<\/span>(<\/span>"parent[%d]: %d : %p\\\\n"<\/span>,<\/span> getpid<\/span>(<\/span>)<\/span>,<\/span> g_val,<\/span> &<\/span>g_val)<\/span>;<\/span>
\n }<\/span>
\n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\u4e0a\u8ff0\u4ee3\u7801\u7684\u903b\u8f91\u4e5f\u5341\u5206\u7b80\u5355：\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u5b50\u8fdb\u7a0b，\u7236\u8fdb\u7a0b\u548c\u5b50\u8fdb\u7a0b\u6267\u884c\u4e0d\u540c\u7684\u903b\u8f91，\u6253\u5370\u5168\u5c40\u53d8\u91cfg_val\u7684\u503c\u4ee5\u53ca\u5b83\u7684\u5730\u5740\u3002\u4e0b\u9762\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u8fd0\u884c\u7ed3\u679c：<\/p>\n

\"QQ20250520-200054\"<\/p>\n

\u53ef\u4ee5\u770b\u5230，\u7236\u8fdb\u7a0b\u548c\u5b50\u8fdb\u7a0b\u5bf9\u4e8e\u5168\u5c40\u53d8\u91cfg_val\u6253\u5370\u7684\u5730\u5740\u662f\u76f8\u540c\u7684，\u8fd9\u4e5f\u5f88\u597d\u7406\u89e3，\u6211\u4eec\u5728\u524d\u9762\u8bb2\u89e3\u8fdb\u7a0b\u7684\u65f6\u5019\u8bf4\u8fc7：\u5b50\u8fdb\u7a0b\u4f1a\u590d\u5236\u7236\u8fdb\u7a0b\u7684\u4ee3\u7801，\u5e76\u4e14\u8bbf\u95ee\u7684\u662f\u540c\u4e00\u53d8\u91cf，\u53ea\u6709\u5f53\u5b50\u8fdb\u7a0b\u8981\u5bf9\u53d8\u91cf\u8fdb\u884c\u4fee\u6539\u65f6，\u4f1a\u53d1\u751f\u5199\u65f6\u62f7\u8d1d，\u8fd9\u6837，\u7236\u5b50\u8fdb\u7a0b\u5728\u4fee\u6539\u53d8\u91cf\u65f6\u4fbf\u53ea\u4f1a\u4fee\u6539\u5c5e\u4e8e\u81ea\u5df1\u7684\u90a3\u4e00\u4efd，\u4f7f\u8fdb\u7a0b\u4e4b\u95f4\u5177\u6709\u4e86\u72ec\u7acb\u6027\u3002<\/p>\n

\u90a3\u4e48\u63a5\u4e0b\u6765\u8ba9\u6211\u4eec\u4fee\u6539\u4e00\u4e0b\u4ee3\u7801，\u8ba9\u5b50\u8fdb\u7a0b\u5bf9g_val\u53d8\u91cf\u8fdb\u884c\u4fee\u6539，\u518d\u89c2\u5bdf\u8fd0\u884c\u7ed3\u679c\u3002\u4ee3\u7801\u5982\u4e0b：<\/p>\n

#<\/span>include<\/span> <stdio.h><\/span><\/span>
\n#<\/span>include<\/span> <unistd.h><\/span><\/span>
\n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
\nint<\/span> g_val =<\/span> 0<\/span>;<\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\n pid_t<\/span> id =<\/span> fork<\/span>(<\/span>)<\/span>;<\/span>
\n if<\/span>(<\/span>id <<\/span> 0<\/span>)<\/span>{<\/span>
\n perror<\/span>(<\/span>"fork"<\/span>)<\/span>;<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n }<\/span>
\n else<\/span> if<\/span>(<\/span>id ==<\/span> 0<\/span>)<\/span>{<\/span> \/\/child<\/span>
\n g_val =<\/span> 100<\/span>;<\/span>
\n printf<\/span>(<\/span>"child[%d]: %d : %p\\\\n"<\/span>,<\/span> getpid<\/span>(<\/span>)<\/span>,<\/span> g_val,<\/span> &<\/span>g_val)<\/span>;<\/span>
\n }<\/span>else<\/span>{<\/span> \/\/parent<\/span>
\n sleep<\/span>(<\/span>2<\/span>)<\/span>
\n printf<\/span>(<\/span>"parent[%d]: %d : %p\\\\n"<\/span>,<\/span> getpid<\/span>(<\/span>)<\/span>,<\/span> g_val,<\/span> &<\/span>g_val)<\/span>;<\/span>
\n }<\/span>
\n sleep<\/span>(<\/span>1<\/span>)<\/span>;<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\u4e0a\u8ff0\u4ee3\u7801\u4e2d，\u6211\u4eec\u8ba9\u5b50\u8fdb\u7a0b\u5148\u8fdb\u884c\u6253\u5370，\u540e\u8ba9\u7236\u8fdb\u7a0b\u6253\u5370，\u4e5f\u5c31\u662f\u5148\u8ba9\u5b50\u8fdb\u7a0b\u83b7\u5f97g_val\u7684\u5730\u5740，\u540e\u8ba9\u7236\u8fdb\u7a0b\u83b7\u5f97g_val\u7684\u5730\u5740\u3002\u4e0b\u9762\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u770b\u8fd0\u884c\u7ed3\u679c：<\/p>\n

\"QQ20250521-111625\"<\/p>\n

\u53ef\u4ee5\u770b\u5230\u8fd0\u884c\u7ed3\u679c\u51fa\u4e4e\u6211\u4eec\u7684\u610f\u6599\u3002\u5b50\u8fdb\u7a0b\u4e0d\u662f\u5e94\u8be5\u53d1\u751f\u5199\u65f6\u62f7\u8d1d\u5417？\u4e3a\u4ec0\u4e48\u7236\u5b50\u8fdb\u7a0b\u4e2d\u7684g_val\u7684\u5730\u5740\u4e00\u6837？\u4e3a\u4ec0\u4e48\u76f8\u540c\u7684\u5730\u5740\u4f1a\u6709\u4e24\u4e2a\u4e0d\u540c\u7684\u503c\u51fa\u73b0？<\/p>\n

\u6211\u4eec\u4e00\u70b9\u70b9\u6765\u5206\u6790：<\/p>\n

    \n
  • \u9996\u5148：\u53d8\u91cf\u5185\u5bb9\u4e0d\u4e00\u6837，\u8bf4\u660e\u7236\u5b50\u8fdb\u7a0b\u8f93\u51fa\u7684\u53d8\u91cf\u4e0d\u662f\u540c\u4e00\u4e2a\u53d8\u91cf，\u4e5f\u5c31\u662f\u8bf4\u5b50\u8fdb\u7a0b\u7684\u786e\u662f\u8fdb\u884c\u4e86\u5199\u65f6\u62f7\u8d1d；<\/li>\n
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    \"QQ20250521-202012\"<\/p>\n

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    \"QQ20250521-222507\"<\/p>\n

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    \u6211\u4eec\u77e5\u9053mm_struct\u662f\u4e00\u4e2a\u7ed3\u6784\u4f53，\u90a3\u4e48\u5f53\u6211\u4eec\u6784\u5efa\u5b83\u65f6\u4e5f\u9700\u8981\u8fdb\u884c\u521d\u59cb\u5316，\u90a3\u4e48\u5b83\u521d\u59cb\u5316\u7684\u503c\u662f\u4ece\u54ea\u5f97\u5230\u7684\u5462？\u5927\u90e8\u5206\u7684\u503c\u662f\u6211\u4eec\u7684\u7a0b\u5e8f\u52a0\u8f7d\u5230\u5185\u5b58\u7684\u8fc7\u7a0b\u4e2d\u62ff\u5230\u7684\u3002<\/p>\n

    \u53ef\u4ee5\u8bf4，mm_struct\u7ed3\u6784\u662f\u5bf9\u6574\u4e2a\u8fdb\u7a0b\u7a7a\u95f4\u7684\u63cf\u8ff0\u3002\u6bcf\u2f00\u4e2a\u8fdb\u7a0b\u90fd\u4f1a\u6709\u2f83\u2f30\u72ec\u2f74\u7684mm_struct，\u8fd9\u6837\u6bcf\u2f00\u4e2a\u8fdb\u7a0b\u90fd\u4f1a\u6709\u2f83\u2f30\u72ec\u2f74\u7684\u5730\u5740\u7a7a\u95f4，\u8fd9\u6837\u624d\u80fd\u4e92\u4e0d\u2f32\u6270\u3002<\/p>\n

    \u6bcf\u2f00\u4e2a\u8fdb\u7a0b\u90fd\u6709\u2f83\u2f30\u72ec\u2f74\u7684mm_struct，mm_struct\u7ed3\u6784\u4f53\u4e2d\u5b58\u5728\u8bb8\u591a\u865a\u62df\u5185\u5b58\u533a\u57df(VMA)\u3002\u90a3\u4e48\u8fd9\u4e9bVMA\u80af\u5b9a\u662f\u8981\u7ec4\u7ec7\u8d77\u6765\u7684，VMA\u7684\u7ec4\u7ec7\u2f45\u5f0f\u6709\u4e24\u79cd：<\/p>\n

  • \u5f53VMA\u8f83\u5c11\u65f6\u91c7\u53d6\u5355\u94fe\u8868，\u7531mmap\u6307\u9488\u6307\u5411\u8fd9\u4e2a\u94fe\u8868；<\/li>\n
  • \u5f53VMA\u8f83\u591a\u65f6\u91c7\u53d6\u7ea2\u2fca\u6811\u8fdb\u2f8f\u7ba1\u7406，\u7531mm_rb\u6307\u5411\u8fd9\u68f5\u6811\u3002<\/li>\n

    Linux\u5185\u6838\u4f7f\u2f64 vm_area_struct \u7ed3\u6784\u6765\u8868\u2f70\u2f00\u4e2a\u72ec\u2f74\u7684VMA，\u7531\u4e8e\u6bcf\u4e2a\u4e0d\u540c\u8d28\u7684\u865a\u62df\u5185\u5b58\u533a\u57df\u529f\u80fd\u548c\u5185\u90e8\u673a\u5236\u90fd\u4e0d\u540c，\u56e0\u6b64\u2f00\u4e2a\u8fdb\u7a0b\u4f7f\u2f64\u591a\u4e2avm_area_struct\u7ed3\u6784\u6765\u5206\u522b\u8868\u2f70\u4e0d\u540c\u7c7b\u578b\u7684\u865a\u62df\u5185\u5b58\u533a\u57df，\u5bf9\u4e8e\u5806\u548c\u6808\u6765\u8bf4\u53ef\u80fd\u4f1a\u5b58\u5728\u591a\u4e2avm_area_struct，\u56e0\u4e3a\u5b83\u4eec\u7684\u5927\u5c0f\u662f\u52a8\u6001\u5206\u914d\u7684\u3002\u4e0a\u2faf\u63d0\u5230\u7684\u4e24\u79cd\u7ec4\u7ec7\u2f45\u5f0f\u4f7f\u2f64\u7684\u5c31\u662fvm_area_struct\u7ed3\u6784\u6765\u8fde\u63a5\u5404\u4e2aVMA，\u2f45\u4fbf\u8fdb\u7a0b\u5feb\u901f\u8bbf\u95ee\u3002<\/p>\n

    \u4e0b\u9762\u662fLinux\u5185\u6838\u4e2dvm_area_struct\u7ed3\u6784\u4f53\u7684\u5b9a\u4e49：<\/p>\n

    struct<\/span> vm_area_struct<\/span> {<\/span>
    \n unsigned<\/span> long<\/span> vm_start;<\/span> \/\/\u865a\u5b58\u533a\u8d77\u59cb<\/span>
    \n unsigned<\/span> long<\/span> vm_end;<\/span> \/\/\u865a\u5b58\u533a\u7ed3\u675f<\/span>
    \n struct<\/span> vm_area_struct<\/span> *<\/span>vm_next,<\/span> *<\/span>vm_prev;<\/span> \/\/\u524d\u540e\u6307\u9488<\/span>
    \n struct<\/span> rb_node<\/span> vm_rb;<\/span> \/\/\u7ea2\u2fca\u6811\u4e2d\u7684\u4f4d\u7f6e<\/span>
    \n unsigned<\/span> long<\/span> rb_subtree_gap;<\/span>
    \n struct<\/span> mm_struct<\/span> *<\/span>vm_mm;<\/span> \/\/\u6240\u5c5e\u7684 mm_struct<\/span>
    \n pgprot_t<\/span> vm_page_prot;<\/span>
    \n unsigned<\/span> long<\/span> vm_flags;<\/span> \/\/\u6807\u5fd7\u4f4d<\/span>
    \n struct<\/span> {<\/span>
    \n struct<\/span> rb_node<\/span> rb;<\/span>
    \n unsigned<\/span> long<\/span> rb_subtree_last;<\/span>
    \n }<\/span> shared;<\/span>
    \n struct<\/span> list_head<\/span> anon_vma_chain;<\/span>
    \n struct<\/span> anon_vma<\/span> *<\/span>anon_vma;<\/span>
    \n const<\/span> struct<\/span> vm_operations_struct<\/span> *<\/span>vm_ops;<\/span> \/\/vma\u5bf9\u5e94\u7684\u5b9e\u9645\u64cd\u4f5c<\/span>
    \n unsigned<\/span> long<\/span> vm_pgoff;<\/span> \/\/\u2f42\u4ef6\u6620\u5c04\u504f\u79fb\u91cf<\/span>
    \n struct<\/span> file<\/span> *<\/span> vm_file;<\/span> \/\/\u6620\u5c04\u7684\u2f42\u4ef6<\/span>
    \n void<\/span> *<\/span> vm_private_data;<\/span> \/\/\u79c1\u6709\u6570\u636e<\/span>
    \n atomic_long_t<\/span> swap_readahead_info;<\/span>
    \n#<\/span>ifndef<\/span> CONFIG_MMU<\/span><\/span>
    \n struct<\/span> vm_region<\/span> *<\/span>vm_region;<\/span> \/* NOMMU mapping region *\/<\/span>
    \n#<\/span>endif<\/span><\/span>
    \n#<\/span>ifdef<\/span> CONFIG_NUMA<\/span><\/span>
    \n struct<\/span> mempolicy<\/span> *<\/span>vm_policy;<\/span> \/* NUMA policy for the VMA *\/<\/span>
    \n#<\/span>endif<\/span><\/span>
    \n truct vm_userfaultfd_ctx vm_userfaultfd_ctx;<\/span>
    \n}<\/span> __randomize_layout;<\/span><\/p>\n

    \u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7\u56fe\u793a\u6765\u66f4\u52a0\u6df1\u5165\u7684\u7406\u89e3： \"QQ20250521-230438\"<\/p>\n

    4. \u4e3a\u4ec0\u4e48\u5b58\u5728\u865a\u62df\u5730\u5740\u7a7a\u95f4<\/h3>\n

    4.1 \u8fdb\u7a0b\u9694\u79bb\u548c\u5b89\u5168\u6027<\/h4>\n

    \u5728\u65e9\u671f\u7684\u8ba1\u7b97\u673a\u4e2d，\u8981\u8fd0\u2f8f\u2f00\u4e2a\u7a0b\u5e8f，\u4f1a\u628a\u8fd9\u4e9b\u7a0b\u5e8f\u5168\u90fd\u88c5\u2f0a\u5185\u5b58，\u7a0b\u5e8f\u90fd\u662f\u76f4\u63a5\u8fd0\u2f8f\u5728\u5185\u5b58\u4e0a\u7684，\u4e5f\u5c31\u662f\u8bf4\u7a0b\u5e8f\u4e2d\u8bbf\u95ee\u7684\u5185\u5b58\u5730\u5740\u90fd\u662f\u5b9e\u9645\u7684\u7269\u7406\u5185\u5b58\u5730\u5740\u3002\u5f53\u8ba1\u7b97\u673a\u540c\u65f6\u8fd0\u2f8f\u591a\u4e2a\u7a0b\u5e8f\u65f6，\u5fc5\u987b\u4fdd\u8bc1\u8fd9\u4e9b\u7a0b\u5e8f\u2f64\u5230\u7684\u5185\u5b58\u603b\u91cf\u8981\u2f29\u4e8e\u8ba1\u7b97\u673a\u5b9e\u9645\u7269\u7406\u5185\u5b58\u7684\u2f24\u2f29\u3002<\/p>\n

    \u90a3\u5f53\u7a0b\u5e8f\u540c\u65f6\u8fd0\u2f8f\u591a\u4e2a\u7a0b\u5e8f\u65f6，\u64cd\u4f5c\u7cfb\u7edf\u662f\u5982\u4f55\u4e3a\u8fd9\u4e9b\u7a0b\u5e8f\u5206\u914d\u5185\u5b58\u7684\u5462？\u4f8b\u5982\u67d0\u53f0\u8ba1\u7b97\u673a\u603b\u7684\u5185\u5b58\u2f24\u2f29\u662f128M，\u73b0\u5728\u540c\u65f6\u8fd0\u2f8f\u4e24\u4e2a\u7a0b\u5e8fA\u548cB，A\u9700\u5360\u2f64\u5185\u5b5810M，B\u9700\u5360\u2f64\u5185\u5b58110\u3002\u8ba1\u7b97\u673a\u5728\u7ed9\u7a0b\u5e8f\u5206\u914d\u5185\u5b58\u65f6\u4f1a\u91c7\u53d6\u8fd9\u6837\u7684\u2f45\u6cd5：\u5148\u5c06\u5185\u5b58\u4e2d\u7684\u524d10M\u5206\u914d\u7ed9\u7a0b\u5e8fA，\u63a5\u7740\u518d\u4ece\u5185\u5b58\u4e2d\u5269\u4f59\u7684118M\u4e2d\u5212\u5206\u51fa110M\u5206\u914d\u7ed9\u7a0b\u5e8fB\u3002<\/p>\n

    \u8fd9\u79cd\u5206\u914d\u2f45\u6cd5\u53ef\u4ee5\u4fdd\u8bc1\u7a0b\u5e8fA\u548c\u7a0b\u5e8fB\u90fd\u80fd\u8fd0\u2f8f，\u4f46\u662f\u8fd9\u79cd\u7b80\u5355\u7684\u5185\u5b58\u5206\u914d\u7b56\u7565\u95ee\u9898\u5f88\u591a：<\/p>\n

      \n
    • **\u5b89\u5168\u2edb\u9669：**\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u53ef\u4ee5\u8bbf\u95ee\u4efb\u610f\u7684\u5185\u5b58\u7a7a\u95f4，\u8fd9\u4e5f\u5c31\u610f\u5473\u7740\u4efb\u610f\u2f00\u4e2a\u8fdb\u7a0b\u90fd\u80fd\u591f\u53bb\u8bfb\u5199\u7cfb\u7edf\u76f8\u5173\u5185\u5b58\u533a\u57df，\u5982\u679c\u662f\u2f00\u4e2a\u2f4a\u2ee2\u75c5\u6bd2，\u90a3\u4e48\u4ed6\u5c31\u80fd\u968f\u610f\u7684\u4fee\u6539\u5185\u5b58\u7a7a\u95f4，\u8ba9\u8bbe\u5907\u76f4\u63a5\u762b\u75ea\u3002<\/li>\n
    • **\u5730\u5740\u4e0d\u786e\u5b9a：**\u4f17\u6240\u5468\u77e5，\u7f16\u8bd1\u5b8c\u6210\u540e\u7684\u7a0b\u5e8f\u662f\u5b58\u653e\u5728\u786c\u76d8\u4e0a\u7684，\u5f53\u8fd0\u2f8f\u7684\u65f6\u5019，\u9700\u8981\u5c06\u7a0b\u5e8f\u642c\u5230\u5185\u5b58\u5f53\u4e2d\u53bb\u8fd0\u2f8f，\u5982\u679c\u76f4\u63a5\u4f7f\u2f64\u7269\u7406\u5730\u5740\u7684\u8bdd，\u6211\u4eec\u2f46\u6cd5\u786e\u5b9a\u5185\u5b58\u73b0\u5728\u4f7f\u2f64\u5230\u54ea\u2fa5\u4e86，\u4e5f\u5c31\u662f\u8bf4\u62f7\u2ec9\u7684\u5b9e\u9645\u5185\u5b58\u5730\u5740\u6bcf\u2f00\u6b21\u8fd0\u2f8f\u90fd\u662f\u4e0d\u786e\u5b9a\u7684，\u2f50\u5982：\u7b2c\u2f00\u6b21\u6267\u2f8fa.out\u65f6\u5019，\u5185\u5b58\u5f53\u4e2d\u2f00\u4e2a\u8fdb\u7a0b\u90fd\u6ca1\u6709\u8fd0\u2f8f，\u6240\u4ee5\u642c\u79fb\u5230\u5185\u5b58\u5730\u5740\u662f0x00000000，\u4f46\u662f\u7b2c\u2f06\u6b21\u7684\u65f6\u5019，\u5185\u5b58\u5df2\u7ecf\u670910\u4e2a\u8fdb\u7a0b\u5728\u8fd0\u2f8f\u4e86，\u90a3\u6267\u2f8fa.out\u7684\u65f6\u5019，\u5185\u5b58\u5730\u5740\u5c31\u4e0d\u2f00\u5b9a\u4e86<\/li>\n
    • **\u6548\u7387\u4f4e\u4e0b：**\u5982\u679c\u76f4\u63a5\u4f7f\u2f64\u7269\u7406\u5185\u5b58\u7684\u8bdd，\u2f00\u4e2a\u8fdb\u7a0b\u5c31\u662f\u4f5c\u4e3a\u2f00\u4e2a\u6574\u4f53（\u5185\u5b58\u5757）\u64cd\u4f5c\u7684，\u5982\u679c\u51fa\u73b0\u7269\u7406\u5185\u5b58\u4e0d\u591f\u2f64\u7684\u65f6\u5019，\u6211\u4eec\u2f00\u822c\u7684\u529e\u6cd5\u662f\u5c06\u4e0d\u5e38\u2f64\u7684\u8fdb\u7a0b\u62f7\u2ec9\u5230\u78c1\u76d8\u7684\u4ea4\u6362\u5206\u533a\u4e2d，\u597d\u817e\u51fa\u5185\u5b58，\u4f46\u662f\u5982\u679c\u662f\u7269\u7406\u5730\u5740\u7684\u8bdd，\u5c31\u9700\u8981\u5c06\u6574\u4e2a\u8fdb\u7a0b\u2f00\u8d77\u62f7\u2f9b，\u8fd9\u6837，\u5728\u5185\u5b58\u548c\u78c1\u76d8\u4e4b\u95f4\u62f7\u2ec9\u65f6\u95f4\u592a\u2ed3，\u6548\u7387\u8f83\u4f4e\u3002<\/li>\n<\/ul>\n

      \u5f53\u6709\u4e86\u865a\u62df\u5730\u5740\u7a7a\u95f4\u548c\u5206\u9875\u673a\u5236\u5c31\u80fd\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898：<\/p>\n

        \n
      • \u5730\u5740\u7a7a\u95f4\u548c\u2eda\u8868\u662fOS\u521b\u5efa\u5e76\u7ef4\u62a4\u7684，\u4e5f\u5c31\u610f\u5473\u7740，\u51e1\u662f\u60f3\u4f7f\u2f64\u5730\u5740\u7a7a\u95f4\u548c\u2eda\u8868\u8fdb\u2f8f\u6620\u5c04，\u4e5f\u2f00\u5b9a\u8981\u5728OS\u7684\u76d1\u7ba1\u4e4b\u4e0b\u6765\u8fdb\u2f8f\u8bbf\u95ee\u3002\u8fd9\u6837\u5c31\u4fdd\u62a4\u4e86\u7269\u7406\u5185\u5b58\u4e2d\u7684\u6240\u6709\u7684\u5408\u6cd5\u6570\u636e，\u5305\u62ec\u5404\u4e2a\u8fdb\u7a0b\u4ee5\u53ca\u5185\u6838\u7684\u76f8\u5173\u6709\u6548\u6570\u636e\u3002<\/li>\n<\/ul>\n

        \u4e3e\u4e00\u4e2a\u5f88\u7b80\u5355\u7684\u4f8b\u5b50：\u4e3a\u4ec0\u4e48\u5f53\u6211\u4eec\u5728\u7a0b\u5e8f\u4e2d\u5bf9\u4e00\u4e2a\u5e38\u91cf\u5b57\u7b26\u4e32\u8fdb\u884c\u66f4\u6539\u65f6\u7a0b\u5e8f\u4f1a\u5d29\u6e83？\u6700\u6839\u672c\u7684\u539f\u56e0\u5c31\u662f\u5f53\u6211\u4eec\u5728\u67e5\u627e\u9875\u8868\u65f6，\u9875\u8868\u5bf9\u4e8e\u8fd9\u4e00\u90e8\u5206\u5730\u5740\u7684\u6570\u636e\u7684\u6743\u9650\u662f\u53ea\u8bfb，\u6240\u4ee5\u6211\u4eec\u7684\u64cd\u4f5c\u5c31\u662f\u4e0d\u5408\u6cd5\u64cd\u4f5c，\u7a0b\u5e8f\u81ea\u7136\u5c31\u4f1a\u5d29\u6e83\u3002<\/p>\n

        4.2 \u7b80\u5316\u7a0b\u5e8f\u8bbe\u8ba1<\/h4>\n

        \u6211\u4eec\u8981\u77e5\u9053，\u4e00\u4e2a\u7a0b\u5e8f\u7684\u4ee3\u7801\u548c\u6570\u636e\u52a0\u8f7d\u5230\u7269\u7406\u5185\u5b58\u4e0a\u662f\u65e0\u5e8f\u7684，\u4e5f\u5c31\u662f\u8bf4\u5bf9\u4e8e\u4e00\u90e8\u5206\u6570\u636e\u54ea\u91cc\u6709\u4f4d\u7f6e\u5c31\u52a0\u8f7d\u5230\u54ea，\u4e5f\u5c31\u662f\u8bf4\u4e00\u4e2a\u7a0b\u5e8f\u52a0\u8f7d\u5230\u7269\u7406\u5185\u5b58\u4e0a\u65f6\u5b83\u7684\u4ee3\u7801\u548c\u6570\u636e\u7684\u4f4d\u7f6e\u90fd\u662f\u968f\u673a\u7684，\u8fd9\u5f88\u4e0d\u65b9\u4fbf\u6211\u4eec\u8fdb\u884c\u7ba1\u7406，\u6709\u4e86\u865a\u62df\u5730\u5740\u7a7a\u95f4，\u6211\u4eec\u4e0d\u4ec5\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u5728\u7269\u7406\u4e0a\u65e0\u5e8f\u7684\u5730\u5740\u53d8\u5f97\u770b\u4f3c\u6709\u5e8f\u3002\u56e0\u6b64\u7a0b\u5e8f\u5458\u5728\u5199\u7a0b\u5e8f\u65f6\u4e0d\u5fc5\u8003\u8651\u7cfb\u7edf\u4e2d\u5df2\u6709\u8fdb\u7a0b\u7684\u5185\u5b58\u5206\u914d\u60c5\u51b5\u3002<\/p>\n

          \n
        • \u6240\u6709\u7a0b\u5e8f\u90fd\u8ba4\u4e3a\u5185\u5b58\u4ece\u5730\u5740 0x00000000 \u5f00\u59cb，\u903b\u8f91\u7b80\u5355\u3002<\/li>\n
        • \u4e0d\u9700\u8981\u5173\u5fc3\u5176\u4ed6\u7a0b\u5e8f\u7684\u5b58\u5728\u6216\u7269\u7406\u5185\u5b58\u7684\u5e03\u5c40\u3002<\/li>\n<\/ul>\n

          \u56e0\u4e3a\u2eda\u8868\u7684\u6620\u5c04\u7684\u5b58\u5728，\u7a0b\u5e8f\u5728\u7269\u7406\u5185\u5b58\u4e2d\u7406\u8bba\u4e0a\u5c31\u53ef\u4ee5\u4efb\u610f\u4f4d\u7f6e\u52a0\u8f7d\u3002\u5b83\u53ef\u4ee5\u5c06\u5730\u5740\u7a7a\u95f4\u4e0a\u7684\u865a\u62df\u5730\u5740\u548c\u7269\u7406\u5730\u5740\u8fdb\u2f8f\u6620\u5c04，\u5728\u8fdb\u7a0b\u89c6\u2ec6\u6240\u6709\u7684\u5185\u5b58\u5206\u5e03\u90fd\u53ef\u4ee5\u662f\u6709\u5e8f\u7684\u3002<\/p>\n

          4.3 \u89e3\u8026\u5408<\/h4>\n

          \u56e0\u4e3a\u6709\u865a\u62df\u5730\u5740\u7a7a\u95f4\u7684\u5b58\u5728\u548c\u2eda\u8868\u7684\u6620\u5c04\u7684\u5b58\u5728，\u6211\u4eec\u7684\u7269\u7406\u5185\u5b58\u4e2d\u53ef\u4ee5\u5bf9\u672a\u6765\u7684\u6570\u636e\u8fdb\u2f8f\u4efb\u610f\u4f4d\u7f6e\u7684\u52a0\u8f7d！\u7269\u7406\u5185\u5b58\u7684\u5206\u914d\u548c\u8fdb\u7a0b\u7684\u7ba1\u7406\u5c31\u53ef\u4ee5\u505a\u5230\u6ca1\u6709\u5173\u7cfb，\u8fdb\u7a0b\u7ba1\u7406\u6a21\u5757\u548c\u5185\u5b58\u7ba1\u7406\u6a21\u5757\u5c31\u5b8c\u6210\u4e86\u89e3\u8026\u5408\u3002<\/p>\n

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          4.4 \u652f\u6301\u865a\u62df\u5185\u5b58\u548c\u66f4\u5927\u5730\u5740\u7a7a\u95f4<\/h4>\n

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            \n
          • \u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u81ea\u5df1\u7684\u865a\u62df\u5730\u5740\u7a7a\u95f4，\u64cd\u4f5c\u7cfb\u7edf\u53ef\u4ee5\u5728\u865a\u62df\u5730\u5740\u7a7a\u95f4\u4e2d\u5206\u914d\u66f4\u591a\u7684\u5185\u5b58\u533a\u57df，\u800c\u4e0d\u53d7\u7269\u7406\u5185\u5b58\u7684\u9650\u5236\u3002\u7a0b\u5e8f\u53ef\u4ee5\u4f7f\u7528\u6bd4\u5b9e\u9645\u7269\u7406\u5185\u5b58\u66f4\u5927\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/li>\n
          • \u901a\u8fc7\u9875\u9762\u7f6e\u6362\u7b49\u673a\u5236，\u628a\u4e0d\u5e38\u7528\u6570\u636e\u4e34\u65f6\u6362\u5230\u78c1\u76d8，\u800c\u4e0d\u662f\u4e00\u76f4\u5360\u7528\u7269\u7406\u5185\u5b58\u3002<\/li>\n
          • \u652f\u6301\u5927\u7a0b\u5e8f\u8fd0\u884c\u5728\u5c0f\u7269\u7406\u5185\u5b58\u7684\u673a\u5668\u4e0a\u3002<\/li>\n<\/ul>\n

            \u6bd4\u5982\u4f60\u7269\u7406\u5185\u5b58\u53ea\u6709 8GB，\u4f46\u7a0b\u5e8f\u53ef\u4ee5\u8fd0\u884c 16GB \u7684\u6570\u636e\u3002<\/p>\n

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            \u5c3e\u58f0<\/h3>\n

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