{"id":35364,"date":"2025-05-04T13:49:48","date_gmt":"2025-05-04T05:49:48","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/35364.html"},"modified":"2025-05-04T13:49:48","modified_gmt":"2025-05-04T05:49:48","slug":"%e3%80%90linux%e3%80%91%e4%bb%8e%e4%ba%92%e6%96%a5%e5%8e%9f%e7%90%86%e5%88%b0c-raii%e5%b0%81%e8%a3%85%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/35364.html","title":{"rendered":"\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5"},"content":{"rendered":"<p>&#x1f4e2;\u535a\u5ba2\u4e3b\u9875&#xff1a;https:\/\/blog.csdn.net\/2301_779549673 &#x1f4e2;\u6b22\u8fce\u70b9\u8d5e &#x1f44d; \u6536\u85cf \u2b50\u7559\u8a00 &#x1f4dd; \u5982\u6709\u9519\u8bef\u656c\u8bf7\u6307\u6b63&#xff01; &#x1f4e2;\u672c\u6587\u7531 JohnKi \u539f\u521b&#xff0c;\u9996\u53d1\u4e8e CSDN&#x1f649; &#x1f4e2;\u672a\u6765\u5f88\u957f&#xff0c;\u503c\u5f97\u6211\u4eec\u5168\u529b\u5954\u8d74\u66f4\u7f8e\u597d\u7684\u751f\u6d3b\u2728<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250504054947-6816fffb49917.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250504054947-6816fffb53e77.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>&#x1f4e2;\u524d\u8a00<\/li>\n<li>&#x1f3f3;\ufe0f\u200d&#x1f308;\u4e00\u3001\u4ece\u573a\u666f\u770b\u4e92\u65a5&#xff1a;\u4e3a\u4ec0\u4e48\u9700\u8981\u9501&#xff1f;<\/li>\n<li>&#x1f3f3;\ufe0f\u200d&#x1f308;\u4e8c\u3001\u4e92\u65a5\u9501\u6838\u5fc3\u6982\u5ff5\u56fe\u89e3<\/li>\n<li>\n<ul>\n<li>2.1 \u4e34\u754c\u533a\u4e0e\u975e\u4e34\u754c\u533a<\/li>\n<li>2. 2 \u8fdb\u7a0b\u7ebf\u7a0b\u95f4\u7684\u4e92\u65a5\u76f8\u5173\u80cc\u666f\u6982\u5ff5<\/li>\n<\/ul>\n<\/li>\n<li>&#x1f3f3;\ufe0f\u200d&#x1f308;\u4e09\u3001Linux\u4e92\u65a5\u9501\u539f\u7406\u5256\u6790<\/li>\n<li>\n<ul>\n<li>3.2 \u521d\u59cb\u5316\u4e92\u65a5\u91cf<\/li>\n<li>3.3 \u9500\u6bc1\u4e92\u65a5\u91cf<\/li>\n<li>3.3 pthread_mutex \u5e95\u5c42\u5b9e\u73b0<\/li>\n<\/ul>\n<\/li>\n<li>&#x1f3f3;\ufe0f\u200d&#x1f308;\u56db\u3001C&#043;&#043; RAII\u5c01\u88c5\u5b9e\u6218<\/li>\n<li>\n<ul>\n<li>4.1 \u57fa\u7840\u4e92\u65a5\u7c7b&#xff08;Mutex&#xff09;<\/li>\n<li>4.2 \u5b88\u536b\u9501&#xff08;LockGuard&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>&#x1f3f3;\ufe0f\u200d&#x1f308;\u4e94\u3001\u5b8c\u6574\u4ee3\u7801<\/li>\n<li>\n<ul>\n<li>5.1 Mutex.hpp<\/li>\n<li>5.2 Mutex.cc<\/li>\n<li>5.3 Makefile<\/li>\n<\/ul>\n<\/li>\n<li>&#x1f465;\u603b\u7ed3<\/li>\n<\/ul>\n<hr \/>\n<h2>&#x1f4e2;\u524d\u8a00<\/h2>\n<p>\u7d27\u63a5\u4e0a\u56de\u7684\u7ebf\u7a0bC&#043;&#043;\u5c01\u88c5&#xff0c;\u8fd9\u56de\u7b14\u8005\u7740\u91cd\u4ecb\u7ecd\u4e00\u4e0b\u4e92\u65a5\u7684\u539f\u7406\u548c\u5176\u5fc5\u8981\u6027&#xff0c;\u5e76\u624b\u628a\u624b\u4f7f\u7528C&#043;&#043;\u5c01\u88c5\u4e00\u4e2aRAII\u6a21\u578b\u3002<\/p>\n<p>\u8fd8\u6709\u4e00\u70b9&#xff0c;\u7b14\u8005\u4e4b\u540e\u7684\u5c01\u88c5\u90fd\u4f1a\u4f7f\u7528\u4e4b\u524d\u535a\u5ba2\u4e2d\u5c01\u88c5\u597d\u7684\u5bb9\u5668&#xff0c;\u9700\u8981\u7684\u53ef\u4ee5\u53bb\u4ed3\u5e93\u6216\u8005\u524d\u9762\u7684\u535a\u5ba2\u4e2d\u81ea\u53d6\u3002<\/p>\n<p>RAII \u7684\u6838\u5fc3\u601d\u60f3\u662f\u5c06\u8d44\u6e90\u7684\u83b7\u53d6\u548c\u521d\u59cb\u5316\u653e\u5728\u5bf9\u8c61\u7684\u6784\u9020\u51fd\u6570\u4e2d\u8fdb\u884c&#xff0c;\u800c\u8d44\u6e90\u7684\u91ca\u653e\u653e\u5728\u5bf9\u8c61\u7684\u6790\u6784\u51fd\u6570\u4e2d\u8fdb\u884c\u3002\u5f53\u5bf9\u8c61\u88ab\u521b\u5efa\u65f6&#xff0c;\u5176\u6784\u9020\u51fd\u6570\u4f1a\u81ea\u52a8\u6267\u884c&#xff0c;\u4ece\u800c\u5b8c\u6210\u8d44\u6e90\u7684\u83b7\u53d6&#xff1b;\u5f53\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u7ed3\u675f\u65f6&#xff0c;\u5176\u6790\u6784\u51fd\u6570\u4f1a\u88ab\u81ea\u52a8\u8c03\u7528&#xff0c;\u4ece\u800c\u5b8c\u6210\u8d44\u6e90\u7684\u91ca\u653e\u3002\u8fd9\u6837&#xff0c;\u8d44\u6e90\u7684\u751f\u547d\u5468\u671f\u5c31\u4e0e\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u7ed1\u5b9a\u5728\u4e00\u8d77&#xff0c;\u5229\u7528 C&#043;&#043; \u7b49\u8bed\u8a00\u7684\u5bf9\u8c61\u81ea\u52a8\u9500\u6bc1\u673a\u5236\u6765\u786e\u4fdd\u8d44\u6e90\u7684\u6b63\u786e\u91ca\u653e\u3002<\/p>\n<hr \/>\n<h2>&#x1f3f3;\ufe0f\u200d&#x1f308;\u4e00\u3001\u4ece\u573a\u666f\u770b\u4e92\u65a5&#xff1a;\u4e3a\u4ec0\u4e48\u9700\u8981\u9501&#xff1f;<\/h2>\n<p>\u5047\u8bbe\u4f60\u7684\u94f6\u884c\u8d26\u6237\u4f59\u989d\u662f1000\u5143&#xff0c;\u540c\u65f6\u6709\u4e24\u4e2a\u7ebf\u7a0b\u6267\u884c\u8f6c\u8d26\u64cd\u4f5c&#xff1a;<\/p>\n<ul>\n<li>\u200b\u7ebf\u7a0bA&#xff1a;\u5b58\u5165200\u5143 \u2192 balance &#043;&#061; 200<\/li>\n<li>\u200b\u7ebf\u7a0bB&#xff1a;\u53d6\u51fa300\u5143 \u2192 balance -&#061; 300 \u65e0\u9501\u60c5\u51b5\u4e0b\u53ef\u80fd\u7684\u6267\u884c\u987a\u5e8f&#xff1a;<\/li>\n<\/ul>\n<p>\u7ebf\u7a0bA\u8bfb\u53d6<span class=\"token function\">balance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span> \u2192 \u7ebf\u7a0bB\u8bfb\u53d6<span class=\"token function\">balance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span> \u2192<br \/>\n\u7ebf\u7a0bA\u5199\u5165<span class=\"token number\">1200<\/span> \u2192 \u7ebf\u7a0bB\u5199\u5165<span class=\"token number\">700<\/span><br \/>\n\u6700\u7ec8\u7ed3\u679c&#xff1a;<span class=\"token number\">700<\/span>\u5143&#xff08;\u6b63\u786e\u5e94\u4e3a<span class=\"token number\">900<\/span>\u5143&#xff09;<\/p>\n<h2>&#x1f3f3;\ufe0f\u200d&#x1f308;\u4e8c\u3001\u4e92\u65a5\u9501\u6838\u5fc3\u6982\u5ff5\u56fe\u89e3<\/h2>\n<h3>2.1 \u4e34\u754c\u533a\u4e0e\u975e\u4e34\u754c\u533a<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250504054947-6816fffb5cdf5.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><span class=\"token keyword\">void<\/span><span class=\"token operator\">*<\/span> <span class=\"token function\">thread_func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">*<\/span> arg<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u975e\u4e34\u754c\u533a&#xff08;\u53ef\u5e76\u53d1\u6267\u884c&#xff09;<\/span><br \/>\n    <span class=\"token function\">prepare_data<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <\/p>\n<p>    <span class=\"token comment\">\/\/ \u4e34\u754c\u533a&#xff08;\u9700\u4e92\u65a5\u8bbf\u95ee&#xff09;<\/span><br \/>\n    <span class=\"token function\">pthread_mutex_lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>mtx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">update_shared_resource<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pthread_mutex_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>mtx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u975e\u4e34\u754c\u533a&#xff08;\u53ef\u5e76\u53d1\u6267\u884c&#xff09;<\/span><br \/>\n    <span class=\"token function\">post_process<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5173\u952e\u7279\u5f81&#xff1a;<\/p>\n<p>&#x1f535; \u200b\u975e\u4e34\u754c\u533a&#xff1a;\u5141\u8bb8\u591a\u7ebf\u7a0b\u5e76\u884c&#xff08;\u5982\u56fe\u4e2d\u7eff\u8272\u533a\u57df&#xff09; &#x1f534; \u200b\u4e34\u754c\u533a&#xff1a;\u540c\u4e00\u65f6\u523b\u4ec5\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c&#xff08;\u7ea2\u8272\u533a\u57df&#xff09;<\/p>\n<h3>2. 2 \u8fdb\u7a0b\u7ebf\u7a0b\u95f4\u7684\u4e92\u65a5\u76f8\u5173\u80cc\u666f\u6982\u5ff5<\/h3>\n<ul>\n<li>\u4e34\u754c\u8d44\u6e90:\u591a\u7ebf\u7a0b\u6267\u884c\u6d41\u5171\u4eab\u7684\u8d44\u6e90\u5c31\u53eb\u505a\u4e34\u754c\u8d44\u6e90<\/li>\n<li>\u4e34\u754c\u533a:\u6bcf\u4e2a\u7ebf\u7a0b\u5185\u90e8&#xff0c;\u8bbf\u95ee\u4e34\u754c\u8d44\u6e90\u7684\u4ee3\u7801&#xff0c;\u5c31\u53eb\u505a\u4e34\u754c\u533a<\/li>\n<li>\u4e92\u65a5:\u4efb\u4f55\u65f6\u523b&#xff0c;\u4e92\u65a5\u4fdd\u8bc1\u6709\u4e14\u53ea\u6709\u4e00\u4e2a\u6267\u884c\u6d41\u8fdb\u5165\u4e34\u754c\u533a&#xff0c;\u8bbf\u95ee\u4e34\u754c\u8d44\u6e90&#xff0c;\u901a\u5e38\u5bf9\u4e34\u754c\u8d44\u6e90\u8d77\u4fdd\u62a4\u4f5c\u7528<\/li>\n<li>\u539f\u5b50\u6027:(\u540e\u9762\u8ba8\u8bba\u5982\u4f55\u5b9e\u73b0):\u4e0d\u4f1a\u88ab\u4efb\u4f55\u8c03\u5ea6\u673a\u5236\u6253\u65ad\u7684\u64cd\u4f5c&#xff0c;\u8be5\u64cd\u4f5c\u53ea\u6709\u4e24\u6001&#xff0c;\u8981\u4e48\u5b8c\u6210&#xff0c;\u8981\u4e48\u672a\u5b8c\u6210<\/li>\n<\/ul>\n<h2>&#x1f3f3;\ufe0f\u200d&#x1f308;\u4e09\u3001Linux\u4e92\u65a5\u9501\u539f\u7406\u5256\u6790<\/h2>\n<p>\u6838\u5fc3\u64cd\u4f5c\u6d41\u7a0b&#xff1a;<\/p>\n<p>sequenceDiagram<br \/>\n    participant \u7ebf\u7a0bA<br \/>\n    participant \u4e92\u65a5\u9501<br \/>\n    participant \u5185\u6838<\/p>\n<p>    \u7ebf\u7a0bA<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u4e92\u65a5\u9501<span class=\"token operator\">:<\/span> <span class=\"token function\">pthread_mutex_lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    alt \u9501\u7a7a\u95f2<br \/>\n        \u4e92\u65a5\u9501<span class=\"token operator\">&#8212;<\/span><span class=\"token operator\">&gt;&gt;<\/span>\u7ebf\u7a0bA<span class=\"token operator\">:<\/span> \u7acb\u5373\u83b7\u5f97\u9501<br \/>\n    <span class=\"token keyword\">else<\/span> \u9501\u88ab\u5360<br \/>\n        \u7ebf\u7a0bA<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u5185\u6838<span class=\"token operator\">:<\/span> \u8fdb\u5165\u4f11\u7720\u961f\u5217<br \/>\n        \u5185\u6838<span class=\"token operator\">&#8212;<\/span><span class=\"token operator\">&gt;&gt;<\/span>\u7ebf\u7a0bA<span class=\"token operator\">:<\/span> \u5524\u9192\u5e76\u83b7\u53d6\u9501<br \/>\n    end<br \/>\n    \u7ebf\u7a0bA<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u4e34\u754c\u533a<span class=\"token operator\">:<\/span> \u6267\u884c\u64cd\u4f5c<br \/>\n    \u7ebf\u7a0bA<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u4e92\u65a5\u9501<span class=\"token operator\">:<\/span> <span class=\"token function\">pthread_mutex_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<h3>3.2 \u521d\u59cb\u5316\u4e92\u65a5\u91cf<\/h3>\n<p>\u65b9\u6cd5\u4e00&#xff1a;\u9759\u6001\u5206\u5e03<\/p>\n<p>pthread_mutex_t mutex <span class=\"token operator\">&#061;<\/span> PTHREAD_MUTEX_INITIALIZER<\/p>\n<p>\u65b9\u6cd5\u4e8c&#xff1a;\u52a8\u6001\u5206\u5e03<\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">pthread_mutex_init<\/span><span class=\"token punctuation\">(<\/span>pthread_mutex_t <span class=\"token operator\">*<\/span>restrict mutex<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> pthread_mutexattr_t <span class=\"token operator\">*<\/span>restrict attr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>mutex&#xff1a;\u8981\u521d\u59cb\u5316\u7684\u4e92\u65a5\u91cf attr&#xff1a;NULL<\/p>\n<h3>3.3 \u9500\u6bc1\u4e92\u65a5\u91cf<\/h3>\n<p>\u9500\u6bc1\u4e92\u65a5\u91cf\u9700\u8981\u6ce8\u610f&#xff1a;<\/p>\n<ul>\n<li>\u4f7f\u7528 PTHREAD_MUTEXINITIALIZER \u521d\u59cb\u5316\u7684\u4e92\u65a5\u91cf\u4e0d\u9700\u8981\u9500\u6bc1<\/li>\n<li>\u4e0d\u8981\u9500\u6bc1\u4e00\u4e2a\u5df2\u7ecf\u52a0\u9501\u7684\u4e92\u65a5\u91cf<\/li>\n<li>\u5df2\u7ecf\u9500\u6bc1\u7684\u4e92\u65a5\u91cf&#xff0c;\u8981\u786e\u4fdd\u540e\u9762\u4e0d\u4f1a\u6709\u7ebf\u7a0b\u518d\u5c1d\u8bd5\u52a0\u9501<\/li>\n<\/ul>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">pthread_mutex_destroy<\/span><span class=\"token punctuation\">(<\/span>pthread_mutex_t <span class=\"token operator\">*<\/span>mutex<span class=\"token punctuation\">)<\/span>&#xff1b;<\/p>\n<p>\u4e92\u65a5\u91cf\u52a0\u9501\u548c\u89e3\u9501<\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">pthread_mutex_lock<\/span><span class=\"token punctuation\">(<\/span>pthread_mutex_t <span class=\"token operator\">*<\/span>mutex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">pthread_mutex_unlock<\/span><span class=\"token punctuation\">(<\/span>pthread_mutex_t <span class=\"token operator\">*<\/span>mutex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n\u8fd4\u56de\u503c<span class=\"token operator\">:<\/span>\u6210\u529f\u8fd4\u56de<span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>\u5931\u8d25\u8fd4\u56de\u9519\u8bef\u53f7<\/p>\n<p>\u8c03\u2f64 pthread_mutex_lock \u65f6&#xff0c;\u53ef\u80fd\u4f1a\u9047\u5230\u4ee5\u4e0b\u60c5\u51b5:<\/p>\n<ul>\n<li>\u4e92\u65a5\u91cf\u5904\u4e8e\u672a\u9501\u72b6\u6001&#xff0c;\u8be5\u51fd\u6570\u4f1a\u5c06\u4e92\u65a5\u91cf\u9501\u5b9a&#xff0c;\u540c\u65f6\u8fd4\u56de\u6210\u529f<\/li>\n<li>\u53d1\u8d77\u51fd\u6570\u8c03\u7528\u65f6&#xff0c;\u5176\u4ed6\u7ebf\u7a0b\u5df2\u7ecf\u9501\u5b9a\u4e92\u65a5\u91cf&#xff0c;\u6216\u8005\u5b58\u5728\u5176\u4ed6\u7ebf\u7a0b\u540c\u65f6\u7533\u8bf7\u4e92\u65a5\u91cf&#xff0c;\u4f46\u6ca1\u6709\u7ade\u4e89\u5230\u4e92\u65a5\u91cf&#xff0c;\u90a3\u4e48pthread lock\u8c03\u7528\u4f1a\u9677\u5165\u963b\u585e(\u6267\u884c\u6d41\u88ab\u6302\u8d77)&#xff0c;\u7b49\u5f85\u4e92\u65a5\u91cf\u89e3\u9501\u3002<\/li>\n<\/ul>\n<h3>3.3 pthread_mutex \u5e95\u5c42\u5b9e\u73b0<\/h3>\n<p><span class=\"token comment\">\/\/ \u9501\u7ed3\u6784&#xff08;\u7b80\u5316\u4e3ax86\u5b9e\u73b0&#xff09;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">pthread_mutex<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> __lock<span class=\"token punctuation\">;<\/span>          <span class=\"token comment\">\/\/ \u9501\u72b6\u6001\u6807\u8bc6<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> __count<span class=\"token punctuation\">;<\/span>         <span class=\"token comment\">\/\/ \u9012\u5f52\u9501\u8ba1\u6570\u5668<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> __owner<span class=\"token punctuation\">;<\/span>         <span class=\"token comment\">\/\/ \u6301\u6709\u8005\u7ebf\u7a0bID<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> __kind<span class=\"token punctuation\">;<\/span>          <span class=\"token comment\">\/\/ \u9501\u7c7b\u578b\u6807\u8bc6<\/span><br \/>\n    <span class=\"token comment\">\/\/ &#8230; \u5176\u4ed6\u5b57\u6bb5<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h2>&#x1f3f3;\ufe0f\u200d&#x1f308;\u56db\u3001C&#043;&#043; RAII\u5c01\u88c5\u5b9e\u6218<\/h2>\n<h3>4.1 \u57fa\u7840\u4e92\u65a5\u7c7b&#xff08;Mutex&#xff09;<\/h3>\n<p><span class=\"token comment\">\/\/ \u4e92\u65a5\u9501\u5c01\u88c5\u7c7b&#xff08;\u4e0d\u53ef\u62f7\u8d1d\u6784\u9020\/\u8d4b\u503c&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Mutex<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u7981\u6b62\u62f7\u8d1d&#xff08;\u4fdd\u62a4\u7cfb\u7edf\u9501\u8d44\u6e90&#xff09;<\/span><br \/>\n        <span class=\"token function\">Mutex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mutex<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">const<\/span> Mutex<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mutex<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6784\u9020\u51fd\u6570&#xff1a;\u521d\u59cb\u5316POSIX\u4e92\u65a5\u9501<\/span><br \/>\n        <span class=\"token function\">Mutex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u4e92\u65a5\u9501\u5c5e\u6027\u4e3a\u9ed8\u8ba4\u503c<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pthread_mutex_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>_lock<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>n<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b9e\u9645\u5f00\u53d1\u5efa\u8bae\u5904\u7406\u9519\u8bef\u7801<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6790\u6784\u51fd\u6570&#xff1a;\u9500\u6bc1\u9501\u8d44\u6e90<\/span><br \/>\n        <span class=\"token operator\">~<\/span><span class=\"token function\">Mutex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u786e\u4fdd\u9501\u5df2\u5904\u4e8e\u672a\u9501\u5b9a\u72b6\u6001<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pthread_mutex_destroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>_lock<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>n<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u751f\u4ea7\u73af\u5883\u5e94\u68c0\u67e5\u8fd4\u56de\u503c<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u52a0\u9501\u64cd\u4f5c&#xff08;\u963b\u585e\u76f4\u81f3\u83b7\u53d6\u9501&#xff09;<\/span><br \/>\n        <span class=\"token keyword\">void<\/span> <span class=\"token function\">Lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u53ef\u80fd\u8fd4\u56deEDEADLK&#xff08;\u6b7b\u9501\u68c0\u6d4b&#xff09;\u7b49\u9519\u8bef\u7801<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pthread_mutex_lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>_lock<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>n<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7b80\u5316\u5904\u7406&#xff0c;\u5b9e\u9645\u5efa\u8bae\u629b\u5f02\u5e38\u6216\u8bb0\u5f55\u65e5\u5fd7<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u89e3\u9501\u64cd\u4f5c&#xff08;\u5fc5\u987b\u7531\u9501\u6301\u6709\u8005\u8c03\u7528&#xff09;<\/span><br \/>\n        <span class=\"token keyword\">void<\/span> <span class=\"token function\">Unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u672a\u6301\u6709\u9501\u65f6\u89e3\u9501\u5c06\u8fd4\u56deEPERM<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pthread_mutex_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>_lock<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>n<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n        pthread_mutex_t _lock<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5e95\u5c42\u9501\u5bf9\u8c61<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>4.2 \u5b88\u536b\u9501&#xff08;LockGuard&#xff09;<\/h3>\n<p>\u5b88\u536b\u9501\u4e0d\u662f\u65b0\u7684\u9501\u7c7b\u578b&#xff0c;\u800c\u662f\u5bf9\u5df2\u6709\u9501\u7684\u81ea\u52a8\u5316\u751f\u547d\u5468\u671f\u7ba1\u7406\u5de5\u5177\u3002\u8fd9\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u5b8c\u7f8e\u5951\u5408\u56fe\u793a\u4e2d&#034;Lock-unlock&#034;\u8fb9\u754c\u9700\u8981\u4e25\u683c\u5339\u914d\u7684\u6838\u5fc3\u8bc9\u6c42<\/p>\n<p>\u5b88\u536b\u9501\u5de5\u4f5c\u6d41\u7a0b<\/p>\n<p>sequenceDiagram<br \/>\n    participant \u7ebf\u7a0b<br \/>\n    participant \u5b88\u536b\u9501<br \/>\n    participant \u4e92\u65a5\u9501<\/p>\n<p>    \u7ebf\u7a0b<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u5b88\u536b\u9501<span class=\"token operator\">:<\/span> \u521b\u5efaLockGuard\u5bf9\u8c61<br \/>\n    \u5b88\u536b\u9501<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u4e92\u65a5\u9501<span class=\"token operator\">:<\/span> \u8c03\u7528<span class=\"token function\">Lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    \u4e92\u65a5\u9501<span class=\"token operator\">&#8212;<\/span><span class=\"token operator\">&gt;&gt;<\/span>\u5b88\u536b\u9501<span class=\"token operator\">:<\/span> \u83b7\u5f97\u9501<br \/>\n    \u7ebf\u7a0b<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u4e34\u754c\u533a<span class=\"token operator\">:<\/span> \u6267\u884c\u64cd\u4f5c<br \/>\n    \u7ebf\u7a0b<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u5b88\u536b\u9501<span class=\"token operator\">:<\/span> \u5bf9\u8c61\u79bb\u5f00\u4f5c\u7528\u57df<br \/>\n    \u5b88\u536b\u9501<span class=\"token operator\">-&gt;<\/span><span class=\"token operator\">&gt;<\/span>\u4e92\u65a5\u9501<span class=\"token operator\">:<\/span> \u8c03\u7528<span class=\"token function\">Unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    \u4e92\u65a5\u9501<span class=\"token operator\">&#8212;<\/span><span class=\"token operator\">&gt;&gt;<\/span>\u5176\u4ed6\u7ebf\u7a0b<span class=\"token operator\">:<\/span> \u91ca\u653e\u9501\u8d44\u6e90<\/p>\n<p>\u5b9e\u73b0<\/p>\n<p><span class=\"token comment\">\/\/ RAII\u9501\u5b88\u536b&#xff08;\u81ea\u52a8\u7ba1\u7406\u9501\u751f\u547d\u5468\u671f&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LockGuard<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u6784\u9020\u65f6\u52a0\u9501&#xff08;\u5fc5\u987b\u4f20\u5165\u5df2\u521d\u59cb\u5316\u7684Mutex\u5f15\u7528&#xff09;<\/span><br \/>\n        <span class=\"token function\">LockGuard<\/span><span class=\"token punctuation\">(<\/span>Mutex <span class=\"token operator\">&amp;<\/span>mtx<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span><span class=\"token function\">_mtx<\/span><span class=\"token punctuation\">(<\/span>mtx<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            _mtx<span class=\"token punctuation\">.<\/span><span class=\"token function\">Lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fdb\u5165\u4e34\u754c\u533a<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6790\u6784\u65f6\u81ea\u52a8\u89e3\u9501&#xff08;\u5f02\u5e38\u5b89\u5168\u4fdd\u8bc1&#xff09;<\/span><br \/>\n        <span class=\"token operator\">~<\/span><span class=\"token function\">LockGuard<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            _mtx<span class=\"token punctuation\">.<\/span><span class=\"token function\">Unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u79bb\u5f00\u4f5c\u7528\u57df\u81ea\u52a8\u91ca\u653e<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n        Mutex <span class=\"token operator\">&amp;<\/span>_mtx<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5f15\u7528\u65b9\u5f0f\u6301\u6709&#xff0c;\u907f\u514d\u62f7\u8d1d\u5bfc\u81f4\u672a\u5b9a\u4e49\u884c\u4e3a<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h2>&#x1f3f3;\ufe0f\u200d&#x1f308;\u4e94\u3001\u5b8c\u6574\u4ee3\u7801<\/h2>\n<h3>5.1 Mutex.hpp<\/h3>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">pragma<\/span> <span class=\"token expression\">once<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;pthread.h&gt;<\/span> <span class=\"token comment\">\/\/ POSIX\u7ebf\u7a0b\u5e93\u5934\u6587\u4ef6<\/span><\/span><\/p>\n<p><span class=\"token keyword\">namespace<\/span> LockModule<br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4e92\u65a5\u9501\u5c01\u88c5\u7c7b&#xff08;\u4e0d\u53ef\u62f7\u8d1d\u6784\u9020\/\u8d4b\u503c&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Mutex<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u7981\u6b62\u62f7\u8d1d&#xff08;\u4fdd\u62a4\u7cfb\u7edf\u9501\u8d44\u6e90&#xff09;<\/span><br \/>\n        <span class=\"token function\">Mutex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mutex<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">const<\/span> Mutex<span class=\"token operator\">&amp;<\/span> <span class=\"token keyword\">operator<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mutex<span class=\"token operator\">&amp;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">delete<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6784\u9020\u51fd\u6570&#xff1a;\u521d\u59cb\u5316POSIX\u4e92\u65a5\u9501<\/span><br \/>\n        <span class=\"token function\">Mutex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u521d\u59cb\u5316\u4e92\u65a5\u9501\u5c5e\u6027\u4e3a\u9ed8\u8ba4\u503c<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pthread_mutex_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>_lock<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>n<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b9e\u9645\u5f00\u53d1\u5efa\u8bae\u5904\u7406\u9519\u8bef\u7801<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6790\u6784\u51fd\u6570&#xff1a;\u9500\u6bc1\u9501\u8d44\u6e90<\/span><br \/>\n        <span class=\"token operator\">~<\/span><span class=\"token function\">Mutex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u786e\u4fdd\u9501\u5df2\u5904\u4e8e\u672a\u9501\u5b9a\u72b6\u6001<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pthread_mutex_destroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>_lock<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>n<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u751f\u4ea7\u73af\u5883\u5e94\u68c0\u67e5\u8fd4\u56de\u503c<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u52a0\u9501\u64cd\u4f5c&#xff08;\u963b\u585e\u76f4\u81f3\u83b7\u53d6\u9501&#xff09;<\/span><br \/>\n        <span class=\"token keyword\">void<\/span> <span class=\"token function\">Lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u53ef\u80fd\u8fd4\u56deEDEADLK&#xff08;\u6b7b\u9501\u68c0\u6d4b&#xff09;\u7b49\u9519\u8bef\u7801<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pthread_mutex_lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>_lock<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>n<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7b80\u5316\u5904\u7406&#xff0c;\u5b9e\u9645\u5efa\u8bae\u629b\u5f02\u5e38\u6216\u8bb0\u5f55\u65e5\u5fd7<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u89e3\u9501\u64cd\u4f5c&#xff08;\u5fc5\u987b\u7531\u9501\u6301\u6709\u8005\u8c03\u7528&#xff09;<\/span><br \/>\n        <span class=\"token keyword\">void<\/span> <span class=\"token function\">Unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ \u672a\u6301\u6709\u9501\u65f6\u89e3\u9501\u5c06\u8fd4\u56deEPERM<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> n <span class=\"token operator\">&#061;<\/span> <span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pthread_mutex_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>_lock<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span>n<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n        pthread_mutex_t _lock<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5e95\u5c42\u9501\u5bf9\u8c61<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ RAII\u9501\u5b88\u536b&#xff08;\u81ea\u52a8\u7ba1\u7406\u9501\u751f\u547d\u5468\u671f&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LockGuard<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u6784\u9020\u65f6\u52a0\u9501&#xff08;\u5fc5\u987b\u4f20\u5165\u5df2\u521d\u59cb\u5316\u7684Mutex\u5f15\u7528&#xff09;<\/span><br \/>\n        <span class=\"token function\">LockGuard<\/span><span class=\"token punctuation\">(<\/span>Mutex <span class=\"token operator\">&amp;<\/span>mtx<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span><span class=\"token function\">_mtx<\/span><span class=\"token punctuation\">(<\/span>mtx<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            _mtx<span class=\"token punctuation\">.<\/span><span class=\"token function\">Lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fdb\u5165\u4e34\u754c\u533a<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6790\u6784\u65f6\u81ea\u52a8\u89e3\u9501&#xff08;\u5f02\u5e38\u5b89\u5168\u4fdd\u8bc1&#xff09;<\/span><br \/>\n        <span class=\"token operator\">~<\/span><span class=\"token function\">LockGuard<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            _mtx<span class=\"token punctuation\">.<\/span><span class=\"token function\">Unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u79bb\u5f00\u4f5c\u7528\u57df\u81ea\u52a8\u91ca\u653e<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span><br \/>\n        Mutex <span class=\"token operator\">&amp;<\/span>_mtx<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5f15\u7528\u65b9\u5f0f\u6301\u6709&#xff0c;\u907f\u514d\u62f7\u8d1d\u5bfc\u81f4\u672a\u5b9a\u4e49\u884c\u4e3a<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>5.2 Mutex.cc<\/h3>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;stdlib.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;string.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;unistd.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;pthread.h&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;sched.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> ticket <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\npthread_mutex_t mutex<span class=\"token punctuation\">;<\/span><br \/>\npthread_cond_t cond <span class=\"token operator\">&#061;<\/span> PTHREAD_COND_INITIALIZER<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span><span class=\"token function\">route<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span>arg<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>id <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span>arg<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">pthread_mutex_lock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>mutex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>ticket <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">usleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1000<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%s sells ticket:%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> id<span class=\"token punctuation\">,<\/span> ticket<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            ticket<span class=\"token operator\">&#8212;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">pthread_mutex_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>mutex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">else<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%s wait on cond!\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token function\">pthread_cond_wait<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>cond<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>mutex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u9192\u6765\u7684\u65f6\u5019&#xff0c;\u4f1a\u91cd\u65b0\u7533\u8bf7\u9501&#xff01;&#xff01;<\/span><br \/>\n            <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%s \u88ab\u53eb\u9192\u4e86\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> id<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token function\">pthread_mutex_unlock<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>mutex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    pthread_t t1<span class=\"token punctuation\">,<\/span> t2<span class=\"token punctuation\">,<\/span> t3<span class=\"token punctuation\">,<\/span> t4<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">pthread_mutex_init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>mutex<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">pthread_create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>t1<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> route<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token string\">&#034;thread 1&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pthread_create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>t2<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> route<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token string\">&#034;thread 2&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pthread_create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>t3<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> route<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token string\">&#034;thread 3&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pthread_create<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>t4<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">,<\/span> route<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token string\">&#034;thread 4&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">int<\/span> cnt <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">sleep<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        ticket <span class=\"token operator\">&#043;&#061;<\/span> cnt<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u4e3b\u7ebf\u7a0b\u653e\u7968\u55bd, ticket: %d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> ticket<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">pthread_cond_signal<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>cond<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token function\">pthread_join<\/span><span class=\"token punctuation\">(<\/span>t1<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pthread_join<\/span><span class=\"token punctuation\">(<\/span>t2<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pthread_join<\/span><span class=\"token punctuation\">(<\/span>t3<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pthread_join<\/span><span class=\"token punctuation\">(<\/span>t4<span class=\"token punctuation\">,<\/span> <span class=\"token constant\">NULL<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pthread_mutex_destroy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>mutex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>5.3 Makefile<\/h3>\n<p>bin<span class=\"token operator\">&#061;<\/span>testMutex<br \/>\ncc<span class=\"token operator\">&#061;<\/span>g<span class=\"token operator\">&#043;&#043;<\/span><br \/>\nsrc<span class=\"token operator\">&#061;<\/span>$<span class=\"token punctuation\">(<\/span>wildcard <span class=\"token operator\">*<\/span><span class=\"token punctuation\">.<\/span>cc<span class=\"token punctuation\">)<\/span><br \/>\nobj<span class=\"token operator\">&#061;<\/span>$<span class=\"token punctuation\">(<\/span>src<span class=\"token operator\">:<\/span><span class=\"token punctuation\">.<\/span>cc<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">.<\/span>o<span class=\"token punctuation\">)<\/span><\/p>\n<p>$<span class=\"token punctuation\">(<\/span>bin<span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span>$<span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">)<\/span><br \/>\n$<span class=\"token punctuation\">(<\/span>cc<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span>o $&#064; $<span class=\"token operator\">^<\/span> <span class=\"token operator\">&#8211;<\/span>lpthread<br \/>\n<span class=\"token operator\">%<\/span><span class=\"token punctuation\">.<\/span>o<span class=\"token operator\">:<\/span><span class=\"token operator\">%<\/span><span class=\"token punctuation\">.<\/span>cc<br \/>\n$<span class=\"token punctuation\">(<\/span>cc<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span>c $<span class=\"token operator\">&lt;<\/span> <span class=\"token operator\">&#8211;<\/span>std<span class=\"token operator\">&#061;<\/span>c<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token number\">17<\/span><\/p>\n<p><span class=\"token punctuation\">.<\/span>PHONY<span class=\"token operator\">:<\/span>clean<br \/>\nclean<span class=\"token operator\">:<\/span><br \/>\nrm <span class=\"token operator\">&#8211;<\/span>f $<span class=\"token punctuation\">(<\/span>bin<span class=\"token punctuation\">)<\/span> $<span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token punctuation\">.<\/span>PHONY<span class=\"token operator\">:<\/span>test<br \/>\ntest<span class=\"token operator\">:<\/span><br \/>\necho $<span class=\"token punctuation\">(<\/span>src<span class=\"token punctuation\">)<\/span><br \/>\necho $<span class=\"token punctuation\">(<\/span>obj<span class=\"token punctuation\">)<\/span><\/p>\n<hr \/>\n<h2>&#x1f465;\u603b\u7ed3<\/h2>\n<p>\u672c\u7bc7\u535a\u6587\u5bf9 \u4ece\u4e92\u65a5\u539f\u7406\u5230C&#043;&#043; RAII\u5c01\u88c5\u5b9e\u8df5 \u505a\u4e86\u4e00\u4e2a\u8f83\u4e3a\u8be6\u7ec6\u7684\u4ecb\u7ecd&#xff0c;\u4e0d\u77e5\u9053\u5bf9\u4f60\u6709\u6ca1\u6709\u5e2e\u52a9\u5462<\/p>\n<p>\u89c9\u5f97\u535a\u4e3b\u5199\u5f97\u8fd8\u4e0d\u9519\u7684\u4e09\u8fde\u652f\u6301\u4e0b\u5427&#xff01;\u4f1a\u7ee7\u7eed\u52aa\u529b\u7684~<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250504054947-6816fffb749b8.jpg\" alt=\"\u8bf7\u6dfb\u52a0\u56fe\u7247\u63cf\u8ff0\" width=\"600\" height=\"400\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb3k\u6b21\uff0c\u70b9\u8d5e67\u6b21\uff0c\u6536\u85cf61\u6b21\u3002\u7d27\u63a5\u4e0a\u56de\u7684\u7ebf\u7a0bC++\u5c01\u88c5\uff0c\u8fd9\u56de\u7b14\u8005\u7740\u91cd\u4ecb\u7ecd\u4e00\u4e0b\u4e92\u65a5\u7684\u539f\u7406\u548c\u5176\u5fc5\u8981\u6027\uff0c\u5e76\u624b\u628a\u624b\u4f7f\u7528C++\u5c01\u88c5\u4e00\u4e2aRAII\u6a21\u578b\u3002\u8fd8\u6709\u4e00\u70b9\uff0c\u7b14\u8005\u4e4b\u540e\u7684\u5c01\u88c5\u90fd\u4f1a\u4f7f\u7528\u4e4b\u524d\u535a\u5ba2\u4e2d\u5c01\u88c5\u597d\u7684\u5bb9\u5668\uff0c\u9700\u8981\u7684\u53ef\u4ee5\u53bb\u4ed3\u5e93\u6216\u8005\u524d\u9762\u7684\u535a\u5ba2\u4e2d\u81ea\u53d6\u3002RAII\u7684\u6838\u5fc3\u601d\u60f3\u662f\u5c06\u8d44\u6e90\u7684\u83b7\u53d6\u548c\u521d\u59cb\u5316\u653e\u5728\u5bf9\u8c61\u7684\u6784\u9020\u51fd\u6570\u4e2d\u8fdb\u884c\uff0c\u800c\u8d44\u6e90\u7684\u91ca\u653e\u653e\u5728\u5bf9\u8c61\u7684\u6790\u6784\u51fd\u6570\u4e2d\u8fdb\u884c\u3002\u5f53\u5bf9\u8c61\u88ab\u521b\u5efa\u65f6\uff0c\u5176\u6784\u9020\u51fd\u6570\u4f1a\u81ea\u52a8\u6267\u884c\uff0c\u4ece\u800c\u5b8c\u6210\u8d44\u6e90\u7684\u83b7\u53d6\uff1b\u5f53\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u7ed3\u675f\u65f6\uff0c\u5176\u6790\u6784\u51fd\u6570\u4f1a\u88ab\u81ea\u52a8\u8c03\u7528\uff0c\u4ece\u800c\u5b8c\u6210\u8d44\u6e90\u7684\u91ca\u653e\u3002_raii \u5c01\u88c5<\/p>\n","protected":false},"author":2,"featured_media":35360,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,58,2290],"topic":[],"class_list":["post-35364","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-linux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/35364.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb3k\u6b21\uff0c\u70b9\u8d5e67\u6b21\uff0c\u6536\u85cf61\u6b21\u3002\u7d27\u63a5\u4e0a\u56de\u7684\u7ebf\u7a0bC++\u5c01\u88c5\uff0c\u8fd9\u56de\u7b14\u8005\u7740\u91cd\u4ecb\u7ecd\u4e00\u4e0b\u4e92\u65a5\u7684\u539f\u7406\u548c\u5176\u5fc5\u8981\u6027\uff0c\u5e76\u624b\u628a\u624b\u4f7f\u7528C++\u5c01\u88c5\u4e00\u4e2aRAII\u6a21\u578b\u3002\u8fd8\u6709\u4e00\u70b9\uff0c\u7b14\u8005\u4e4b\u540e\u7684\u5c01\u88c5\u90fd\u4f1a\u4f7f\u7528\u4e4b\u524d\u535a\u5ba2\u4e2d\u5c01\u88c5\u597d\u7684\u5bb9\u5668\uff0c\u9700\u8981\u7684\u53ef\u4ee5\u53bb\u4ed3\u5e93\u6216\u8005\u524d\u9762\u7684\u535a\u5ba2\u4e2d\u81ea\u53d6\u3002RAII\u7684\u6838\u5fc3\u601d\u60f3\u662f\u5c06\u8d44\u6e90\u7684\u83b7\u53d6\u548c\u521d\u59cb\u5316\u653e\u5728\u5bf9\u8c61\u7684\u6784\u9020\u51fd\u6570\u4e2d\u8fdb\u884c\uff0c\u800c\u8d44\u6e90\u7684\u91ca\u653e\u653e\u5728\u5bf9\u8c61\u7684\u6790\u6784\u51fd\u6570\u4e2d\u8fdb\u884c\u3002\u5f53\u5bf9\u8c61\u88ab\u521b\u5efa\u65f6\uff0c\u5176\u6784\u9020\u51fd\u6570\u4f1a\u81ea\u52a8\u6267\u884c\uff0c\u4ece\u800c\u5b8c\u6210\u8d44\u6e90\u7684\u83b7\u53d6\uff1b\u5f53\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u7ed3\u675f\u65f6\uff0c\u5176\u6790\u6784\u51fd\u6570\u4f1a\u88ab\u81ea\u52a8\u8c03\u7528\uff0c\u4ece\u800c\u5b8c\u6210\u8d44\u6e90\u7684\u91ca\u653e\u3002_raii \u5c01\u88c5\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/35364.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-04T05:49:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250504054947-6816fffb49917.gif\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/35364.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/35364.html\",\"name\":\"\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2025-05-04T05:49:48+00:00\",\"dateModified\":\"2025-05-04T05:49:48+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/35364.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/35364.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/35364.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/35364.html","og_locale":"zh_CN","og_type":"article","og_title":"\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb3k\u6b21\uff0c\u70b9\u8d5e67\u6b21\uff0c\u6536\u85cf61\u6b21\u3002\u7d27\u63a5\u4e0a\u56de\u7684\u7ebf\u7a0bC++\u5c01\u88c5\uff0c\u8fd9\u56de\u7b14\u8005\u7740\u91cd\u4ecb\u7ecd\u4e00\u4e0b\u4e92\u65a5\u7684\u539f\u7406\u548c\u5176\u5fc5\u8981\u6027\uff0c\u5e76\u624b\u628a\u624b\u4f7f\u7528C++\u5c01\u88c5\u4e00\u4e2aRAII\u6a21\u578b\u3002\u8fd8\u6709\u4e00\u70b9\uff0c\u7b14\u8005\u4e4b\u540e\u7684\u5c01\u88c5\u90fd\u4f1a\u4f7f\u7528\u4e4b\u524d\u535a\u5ba2\u4e2d\u5c01\u88c5\u597d\u7684\u5bb9\u5668\uff0c\u9700\u8981\u7684\u53ef\u4ee5\u53bb\u4ed3\u5e93\u6216\u8005\u524d\u9762\u7684\u535a\u5ba2\u4e2d\u81ea\u53d6\u3002RAII\u7684\u6838\u5fc3\u601d\u60f3\u662f\u5c06\u8d44\u6e90\u7684\u83b7\u53d6\u548c\u521d\u59cb\u5316\u653e\u5728\u5bf9\u8c61\u7684\u6784\u9020\u51fd\u6570\u4e2d\u8fdb\u884c\uff0c\u800c\u8d44\u6e90\u7684\u91ca\u653e\u653e\u5728\u5bf9\u8c61\u7684\u6790\u6784\u51fd\u6570\u4e2d\u8fdb\u884c\u3002\u5f53\u5bf9\u8c61\u88ab\u521b\u5efa\u65f6\uff0c\u5176\u6784\u9020\u51fd\u6570\u4f1a\u81ea\u52a8\u6267\u884c\uff0c\u4ece\u800c\u5b8c\u6210\u8d44\u6e90\u7684\u83b7\u53d6\uff1b\u5f53\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u7ed3\u675f\u65f6\uff0c\u5176\u6790\u6784\u51fd\u6570\u4f1a\u88ab\u81ea\u52a8\u8c03\u7528\uff0c\u4ece\u800c\u5b8c\u6210\u8d44\u6e90\u7684\u91ca\u653e\u3002_raii \u5c01\u88c5","og_url":"https:\/\/www.wsisp.com\/helps\/35364.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2025-05-04T05:49:48+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250504054947-6816fffb49917.gif"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"4 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/35364.html","url":"https:\/\/www.wsisp.com\/helps\/35364.html","name":"\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2025-05-04T05:49:48+00:00","dateModified":"2025-05-04T05:49:48+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/35364.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/35364.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/35364.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"\u3010Linux\u3011\u4ece\u4e92\u65a5\u539f\u7406\u5230C++ RAII\u5c01\u88c5\u5b9e\u8df5"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/35364","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=35364"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/35364\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/35360"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=35364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=35364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=35364"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=35364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}