{"id":69305,"date":"2026-01-31T12:49:01","date_gmt":"2026-01-31T04:49:01","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/69305.html"},"modified":"2026-01-31T12:49:01","modified_gmt":"2026-01-31T04:49:01","slug":"%e6%b7%b1%e5%ba%a6%e8%a7%a3%e6%9e%90%ef%bc%9a%e5%a4%9a%e8%bf%9b%e7%a8%8b%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%b8%ad-accept-%e8%a2%ab%e4%bf%a1%e5%8f%b7%e4%b8%ad%e6%96%ad%ef%bc%88eintr%ef%bc%89%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/69305.html","title":{"rendered":"\u6df1\u5ea6\u89e3\u6790\uff1a\u591a\u8fdb\u7a0b\u670d\u52a1\u5668\u4e2d accept() \u88ab\u4fe1\u53f7\u4e2d\u65ad\uff08EINTR\uff09\u7684\u5904\u7406\u673a\u5236"},"content":{"rendered":"<p>\u5728\u5f00\u53d1\u9ad8\u6027\u80fd\u7684\u591a\u8fdb\u7a0b TCP \u670d\u52a1\u5668\u65f6\uff0c\u5f00\u53d1\u8005\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e2a\u68d8\u624b\u7684\u73b0\u8c61\uff1a\u5f53\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5\u65f6\uff0c\u670d\u52a1\u5668\u7aef\u610f\u5916\u62a5\u9519 Interrupted system call\uff0c\u5e76\u5bfc\u81f4\u903b\u8f91\u8fdb\u5165\u5f02\u5e38\u5206\u652f\u3002<\/p>\n<p>\u672c\u6587\u5c06\u7ed3\u5408 Linux \u7cfb\u7edf\u7f16\u7a0b\u7406\u8bba\u4e0e\u4ee3\u7801\u5b9e\u8df5\uff0c\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e00\u73b0\u8c61\u7684\u6210\u56e0\u53ca\u5176\u6807\u51c6\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<hr>\n<h4>1. \u73b0\u8c61\u63cf\u8ff0\uff1a\u6d88\u5931\u7684\u8fde\u63a5\u4e0e\u201c\u610f\u5916\u201d\u7684\u9519\u8bef<\/h4>\n<p>\u5728\u4e00\u4e2a\u5178\u578b\u7684\u591a\u8fdb\u7a0b\u670d\u52a1\u5668\u6a21\u578b\u4e2d\uff1a<\/p>\n<ul>\n<li>\u7236\u8fdb\u7a0b\uff1a\u8d1f\u8d23\u76d1\u542c\u7aef\u53e3\uff0c\u963b\u585e\u5728 accept() \u51fd\u6570\u7b49\u5f85\u65b0\u8fde\u63a5\u3002<\/li>\n<li>\u5b50\u8fdb\u7a0b\uff1a\u5f53\u65b0\u8fde\u63a5\u5230\u8fbe\u65f6\uff0c\u7236\u8fdb\u7a0b fork() \u51fa\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u4e13\u95e8\u8d1f\u8d23\u4e0e\u8be5\u5ba2\u6237\u7aef\u901a\u4fe1\u3002<\/li>\n<\/ul>\n<p>\u95ee\u9898\u89e6\u53d1\u70b9\uff1a \u5f53\u4e00\u4e2a\u5ba2\u6237\u7aef\u901a\u4fe1\u7ed3\u675f\u5e76\u4e3b\u52a8\u5173\u95ed\u8fde\u63a5\u65f6\uff0c\u5bf9\u5e94\u7684\u5b50\u8fdb\u7a0b\u4f1a\u9000\u51fa\u3002\u6839\u636e Linux \u673a\u5236\uff0c\u5b50\u8fdb\u7a0b\u9000\u51fa\u4f1a\u5411\u7236\u8fdb\u7a0b\u53d1\u9001 SIGCHLD \u4fe1\u53f7\u3002\u6b64\u65f6\uff0c\u5982\u679c\u7236\u8fdb\u7a0b\u6b63\u963b\u585e\u5728 accept() \u8c03\u7528\u4e0a\uff0c\u8fd9\u4e2a\u4fe1\u53f7\u4f1a\u5f3a\u5236\u4e2d\u65ad accept() \u7684\u963b\u585e\u72b6\u6001\u3002<\/p>\n<h4>2. \u6838\u5fc3\u539f\u7406\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u53d1\u751f EINTR\uff1f<\/h4>\n<p>\u5728 Linux \u4e2d\uff0c\u67d0\u4e9b\u201c\u6162\u7cfb\u7edf\u8c03\u7528\u201d\uff08\u5982 accept()\u3001read()\u3001select()\uff09\u5728\u963b\u585e\u671f\u95f4\uff0c\u5982\u679c\u88ab\u8fdb\u7a0b\u6355\u83b7\u7684\u4fe1\u53f7\u4e2d\u65ad\uff0c\u7cfb\u7edf\u8c03\u7528\u4f1a\u63d0\u524d\u8fd4\u56de\u5e76\u62a5\u9519\u3002<\/p>\n<ul>\n<li>\u8fd4\u56de\u503c\uff1a-1<\/li>\n<li>\u9519\u8bef\u7801\uff08errno\uff09\uff1aEINTR (\u5b9a\u4e49\u5728 &lt;errno.h&gt;)<\/li>\n<li>\u540e\u7eed\u884c\u4e3a\uff1a\u4fe1\u53f7\u5904\u7406\u51fd\u6570\uff08Signal Handler\uff09\u6267\u884c\u5b8c\u6bd5\u540e\uff0c\u539f\u5148\u88ab\u4e2d\u65ad\u7684\u7cfb\u7edf\u8c03\u7528\u9ed8\u8ba4\u4e0d\u4f1a\u81ea\u52a8\u6062\u590d\uff0c\u800c\u662f\u76f4\u63a5\u62a5\u9519\u8fd4\u56de\u3002<\/li>\n<\/ul>\n<hr>\n<h4>3. \u4ee3\u7801\u5b9e\u6218\uff1a\u590d\u73b0\u5e76\u89e3\u51b3 EINTR \u95ee\u9898<\/h4>\n<p>\u4e0b\u9762\u7684\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u6b63\u786e\u6ce8\u518c\u4fe1\u53f7\u6355\u6349\u51fd\u6570\u3001\u56de\u6536\u5b50\u8fdb\u7a0b\u8d44\u6e90\uff0c\u5e76\u5904\u7406 accept \u7684\u4e2d\u65ad\u9519\u8bef\u3002<\/p>\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;errno.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;signal.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;sys\/wait.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;arpa\/inet.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u4fe1\u53f7\u5904\u7406\u51fd\u6570\uff1a\u56de\u6536\u5b50\u8fdb\u7a0b\u8d44\u6e90\uff0c\u9632\u6b62\u50f5\u5c38\u8fdb\u7a0b<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">recycle<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> num<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/p>\n<p>   <\/span><br \/>\n    <span class=\"token class-name\">pid_t<\/span> pid<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u4f7f\u7528\u975e\u963b\u585e waitpid \u5faa\u73af\u56de\u6536\u6240\u6709\u5df2\u9000\u51fa\u7684\u5b50\u8fdb\u7a0b<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>pid <\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5f00\u53d1\u9ad8\u6027\u80fd\u7684\u591a\u8fdb\u7a0b TCP \u670d\u52a1\u5668\u65f6\uff0c\u5f00\u53d1\u8005\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e2a\u68d8\u624b\u7684\u73b0\u8c61\uff1a\u5f53\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5\u65f6\uff0c\u670d\u52a1\u5668\u7aef\u610f\u5916\u62a5\u9519 Interrupted system call\uff0c\u5e76\u5bfc\u81f4\u903b\u8f91\u8fdb\u5165\u5f02\u5e38\u5206\u652f\u3002<br \/>\n\u672c\u6587\u5c06\u7ed3\u5408 Linux \u7cfb\u7edf\u7f16\u7a0b\u7406\u8bba\u4e0e\u4ee3\u7801\u5b9e\u8df5\uff0c\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e00\u73b0\u8c61\u7684\u6210\u56e0\u53ca\u5176\u6807\u51c6\u89e3\u51b3\u65b9\u6848\u3002 1. \u73b0\u8c61\u63cf\u8ff0\uff1a\u6d88\u5931\u7684\u8fde\u63a5\u4e0e\u201c\u610f\u5916\u201d\u7684\u9519\u8bef<br \/>\n\u5728\u4e00\u4e2a\u5178\u578b\u7684\u591a\u8fdb\u7a0b\u670d\u52a1\u5668\u6a21\u578b\u4e2d\uff1a \u7236\u8fdb\u7a0b\uff1a\u8d1f\u8d23\u76d1\u542c\u7aef\u53e3\uff0c\u963b\u585e\u5728 accept() \u51fd\u6570\u7b49\u5f85\u65b0\u8fde\u63a5\u3002 \u5b50\u8fdb\u7a0b\uff1a\u5f53\u65b0\u8fde\u63a5\u5230\u8fbe\u65f6\uff0c\u7236\u8fdb\u7a0b fork() \u51fa\u4e00\u4e2a\u5b50\u8fdb\u7a0b<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,205,100,43,78,191],"topic":[],"class_list":["post-69305","post","type-post","status-publish","format-standard","hentry","category-server","tag-linux","tag-tcp-ip","tag-100","tag-43","tag-78","tag-191"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u6df1\u5ea6\u89e3\u6790\uff1a\u591a\u8fdb\u7a0b\u670d\u52a1\u5668\u4e2d accept() \u88ab\u4fe1\u53f7\u4e2d\u65ad\uff08EINTR\uff09\u7684\u5904\u7406\u673a\u5236 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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