{"id":45386,"date":"2024-10-06T22:59:23","date_gmt":"2024-10-06T14:59:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/45386\/"},"modified":"2024-10-06T22:59:23","modified_gmt":"2024-10-06T14:59:23","slug":"%e4%bf%ae%e5%be%a9-linux-%e9%8c%af%e8%aa%a4-%e4%b8%ad%e6%96%b7%e7%9a%84%e7%b3%bb%e7%b5%b1%e8%aa%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/45386\/","title":{"rendered":"\u4fee\u5fa9 Linux \u932f\u8aa4 &#8211; \u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528"},"content":{"rendered":"<h1 id=\"%e4%bf%ae%e5%be%a9-linux-%e9%8c%af%e8%aa%a4-%e4%b8%ad%e6%96%b7%e7%9a%84%e7%b3%bb%e7%b5%b1%e8%aa%bf%e7%94%a8-mSorttamAJ\">\u4fee\u5fa9 Linux \u932f\u8aa4 &#8211; \u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528<\/h1>\n<p>\u5728\u4f7f\u7528 Linux \u7cfb\u7d71\u6642\uff0c\u9047\u5230\u932f\u8aa4\u662f\u4e0d\u53ef\u907f\u514d\u7684\u3002\u5176\u4e2d\u4e00\u500b\u5e38\u898b\u7684\u932f\u8aa4\u662f\u300c\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\u300d\uff0c\u9019\u901a\u5e38\u6703\u5c0e\u81f4\u61c9\u7528\u7a0b\u5e8f\u7121\u6cd5\u6b63\u5e38\u904b\u884c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u4e00\u932f\u8aa4\u7684\u6210\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u4fee\u5fa9\u65b9\u6cd5\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7406\u89e3\u548c\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%b8%ad%e6%96%b7%e7%9a%84%e7%b3%bb%e7%b5%b1%e8%aa%bf%e7%94%a8%ef%bc%9f-mSorttamAJ\">\u4ec0\u9ebc\u662f\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\uff1f<\/h2>\n<p>\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\uff08Interrupted System Call\uff09\u662f\u6307\u5728\u9032\u884c\u7cfb\u7d71\u8abf\u7528\u6642\uff0c\u8a72\u8abf\u7528\u88ab\u4fe1\u865f\u4e2d\u65b7\uff0c\u5c0e\u81f4\u7cfb\u7d71\u7121\u6cd5\u5b8c\u6210\u8acb\u6c42\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u9032\u884c I\/O \u64cd\u4f5c\u6642\uff0c\u4f8b\u5982\u8b80\u53d6\u6587\u4ef6\u6216\u7db2\u7d61\u8acb\u6c42\u3002\u7576\u7cfb\u7d71\u8abf\u7528\u88ab\u4e2d\u65b7\u5f8c\uff0c\u8fd4\u56de\u7684\u932f\u8aa4\u78bc\u901a\u5e38\u662f <code>EINTR<\/code>\u3002<\/p>\n<h2 id=\"%e4%b8%ad%e6%96%b7%e7%9a%84%e7%b3%bb%e7%b5%b1%e8%aa%bf%e7%94%a8%e7%9a%84%e6%88%90%e5%9b%a0-mSorttamAJ\">\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\u7684\u6210\u56e0<\/h2>\n<p>\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\u53ef\u80fd\u7531\u591a\u7a2e\u56e0\u7d20\u5f15\u8d77\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4fe1\u865f\u5e72\u64fe\uff1a<\/strong>\u7576\u4e00\u500b\u9032\u7a0b\u6b63\u5728\u57f7\u884c\u7cfb\u7d71\u8abf\u7528\u6642\uff0c\u5982\u679c\u63a5\u6536\u5230\u4fe1\u865f\uff08\u5982 <code>SIGINT<\/code> \u6216 <code>SIGTERM<\/code>\uff09\uff0c\u5247\u8a72\u7cfb\u7d71\u8abf\u7528\u53ef\u80fd\u6703\u88ab\u4e2d\u65b7\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u7af6\u722d\uff1a<\/strong>\u5728\u591a\u7dda\u7a0b\u6216\u591a\u9032\u7a0b\u74b0\u5883\u4e2d\uff0c\u8cc7\u6e90\u7684\u7af6\u722d\u53ef\u80fd\u5c0e\u81f4\u7cfb\u7d71\u8abf\u7528\u88ab\u4e2d\u65b7\u3002<\/li>\n<li><strong>\u7cfb\u7d71\u8ca0\u8f09\uff1a<\/strong>\u9ad8\u8ca0\u8f09\u60c5\u6cc1\u4e0b\uff0c\u7cfb\u7d71\u53ef\u80fd\u7121\u6cd5\u53ca\u6642\u8655\u7406\u8acb\u6c42\uff0c\u5c0e\u81f4\u4e2d\u65b7\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%b8%ad%e6%96%b7%e7%9a%84%e7%b3%bb%e7%b5%b1%e8%aa%bf%e7%94%a8%e7%9a%84%e5%bd%b1%e9%9f%bf-mSorttamAJ\">\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\u7684\u5f71\u97ff<\/h2>\n<p>\u7576\u7cfb\u7d71\u8abf\u7528\u88ab\u4e2d\u65b7\u6642\uff0c\u61c9\u7528\u7a0b\u5e8f\u53ef\u80fd\u6703\u51fa\u73fe\u7570\u5e38\u884c\u70ba\uff0c\u4f8b\u5982\u7121\u6cd5\u8b80\u53d6\u6587\u4ef6\u3001\u7121\u6cd5\u9023\u63a5\u7db2\u7d61\u7b49\u3002\u9019\u4e0d\u50c5\u5f71\u97ff\u7528\u6236\u9ad4\u9a57\uff0c\u9084\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u640d\u5931\u6216\u61c9\u7528\u7a0b\u5e8f\u5d29\u6f70\u3002\u56e0\u6b64\uff0c\u53ca\u6642\u4fee\u5fa9\u9019\u4e00\u932f\u8aa4\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e4%b8%ad%e6%96%b7%e7%9a%84%e7%b3%bb%e7%b5%b1%e8%aa%bf%e7%94%a8-mSorttamAJ\">\u5982\u4f55\u4fee\u5fa9\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528<\/h2>\n<p>\u4fee\u5fa9\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\u901a\u5e38\u9700\u8981\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e4%bf%a1%e8%99%9f%e8%99%95%e7%90%86-mSorttamAJ\">1. \u6aa2\u67e5\u4fe1\u865f\u8655\u7406<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u61c9\u7528\u7a0b\u5e8f\u662f\u5426\u6b63\u78ba\u8655\u7406\u4fe1\u865f\u3002\u53ef\u4ee5\u4f7f\u7528 <code>sigaction<\/code> \u51fd\u6578\u4f86\u8a2d\u7f6e\u4fe1\u865f\u8655\u7406\u5668\uff0c\u78ba\u4fdd\u5728\u63a5\u6536\u5230\u4fe1\u865f\u6642\uff0c\u7cfb\u7d71\u8abf\u7528\u80fd\u5920\u6b63\u78ba\u6062\u5fa9\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>\n#include &lt;signal.h&gt;\n\nvoid signal_handler(int signum) {\n    \/\/ \u8655\u7406\u4fe1\u865f\n}\n\nint main() {\n    struct sigaction sa;\n    sa.sa_handler = signal_handler;\n    sigemptyset(&amp;sa.sa_mask);\n    sa.sa_flags = 0;\n    sigaction(SIGINT, &amp;sa, NULL);\n    \/\/ \u9032\u884c\u7cfb\u7d71\u8abf\u7528\n}\n<\/code><\/pre>\n<h3 id=\"2-%e9%87%8d%e8%a9%a6%e7%b3%bb%e7%b5%b1%e8%aa%bf%e7%94%a8-mSorttamAJ\">2. \u91cd\u8a66\u7cfb\u7d71\u8abf\u7528<\/h3>\n<p>\u5728\u767c\u73fe\u7cfb\u7d71\u8abf\u7528\u88ab\u4e2d\u65b7\u5f8c\uff0c\u53ef\u4ee5\u8003\u616e\u91cd\u8a66\u8a72\u8abf\u7528\u3002\u9019\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u8fd4\u56de\u503c\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>\n#include &lt;unistd.h&gt;\n\nssize_t safe_read(int fd, void *buf, size_t count) {\n    ssize_t result;\n    do {\n        result = read(fd, buf, count);\n    } while (result == -1 &amp;&amp; errno == EINTR);\n    return result;\n}\n<\/code><\/pre>\n<h3 id=\"3-%e6%b8%9b%e5%b0%91%e4%bf%a1%e8%99%9f%e5%b9%b2%e6%93%be-mSorttamAJ\">3. \u6e1b\u5c11\u4fe1\u865f\u5e72\u64fe<\/h3>\n<p>\u5982\u679c\u53ef\u80fd\uff0c\u6e1b\u5c11\u61c9\u7528\u7a0b\u5e8f\u4e2d\u4e0d\u5fc5\u8981\u7684\u4fe1\u865f\u5e72\u64fe\u3002\u4f8b\u5982\uff0c\u5728\u9032\u884c\u95dc\u9375\u64cd\u4f5c\u6642\uff0c\u53ef\u4ee5\u66ab\u6642\u5c4f\u853d\u67d0\u4e9b\u4fe1\u865f\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mSorttamAJ\">\u7e3d\u7d50<\/h2>\n<p>\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\u662f\u4e00\u500b\u5e38\u898b\u7684 Linux \u932f\u8aa4\uff0c\u4e86\u89e3\u5176\u6210\u56e0\u548c\u4fee\u5fa9\u65b9\u6cd5\u5c0d\u65bc\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u6b63\u78ba\u8655\u7406\u4fe1\u865f\u3001\u91cd\u8a66\u7cfb\u7d71\u8abf\u7528\u4ee5\u53ca\u6e1b\u5c11\u4fe1\u865f\u5e72\u64fe\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u904b\u884c\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u53ef\u7528\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9 Linux \u932f\u8aa4\uff1a\u4e2d\u65b7\u7684\u7cfb\u7d71\u8abf\u7528\uff0c\u63d0\u4f9b\u6709\u6548\u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u6062\u5fa9\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u6027\u80fd\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-45386","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/45386","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=45386"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/45386\/revisions"}],"predecessor-version":[{"id":45387,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/45386\/revisions\/45387"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=45386"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=45386"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=45386"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}