{"id":62872,"date":"2025-04-29T16:37:15","date_gmt":"2025-04-29T08:37:15","guid":{"rendered":"https:\/\/fwq.ai\/blog\/62872\/"},"modified":"2025-04-29T16:37:15","modified_gmt":"2025-04-29T08:37:15","slug":"linux%e4%b8%ad%e7%9a%84fork%e5%87%bd%e6%95%b0%e6%98%af%e4%bb%80%e4%b9%88-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/62872\/","title":{"rendered":"Linux\u4e2d\u7684fork\u51fd\u6570\u662f\u4ec0\u4e48"},"content":{"rendered":"<blockquote><p>\n  linux\u4e2d\u201cfork()\u201d\u662f\u4e00\u4e2a\u7cfb\u7edf\u8c03\u7528\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u8fdb\u7a0b\uff0c\u4f1a\u521b\u5efa\u5f53\u524d\u8fdb\u7a0b\u7684\u4e00\u4e2a\u526f\u672c\uff0c\u79f0\u4e3a\u5b50\u8fdb\u7a0b\uff0c\u5b50\u8fdb\u7a0b\u4e0e\u7236\u8fdb\u7a0b\u51e0\u4e4e\u5b8c\u5168\u76f8\u540c\uff0c\u5305\u62ec\u4ee3\u7801\u3001\u6570\u636e\u4ee5\u53ca\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7b49\uff0c\u5176\u539f\u578b\u4e3a\u201cpid_t fork(void);\u201d\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202401\/25\/2024012511172623557.jpg\" class=\"aligncenter\" title=\"Linux\u4e2d\u7684fork\u51fd\u6570\u662f\u4ec0\u4e48\u63d2\u56fe\" alt=\"Linux\u4e2d\u7684fork\u51fd\u6570\u662f\u4ec0\u4e48\u63d2\u56fe\" \/><\/p>\n<p>\u5728Linux\u4e2d\uff0cfork()\u662f\u4e00\u4e2a\u7cfb\u7edf\u8c03\u7528\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u8fdb\u7a0b\u3002\u8be5\u51fd\u6570\u4f1a\u521b\u5efa\u5f53\u524d\u8fdb\u7a0b\u7684\u4e00\u4e2a\u526f\u672c\uff0c\u79f0\u4e3a\u5b50\u8fdb\u7a0b\u3002\u5b50\u8fdb\u7a0b\u4e0e\u7236\u8fdb\u7a0b\u51e0\u4e4e\u5b8c\u5168\u76f8\u540c\uff0c\u5305\u62ec\u4ee3\u7801\u3001\u6570\u636e\u4ee5\u53ca\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7b49\u3002<\/p>\n<p>fork()\u51fd\u6570\u7684\u539f\u578b\u5982\u4e0b\uff1a<\/p>\n<pre>#include &lt;sys\/types.h&gt;\n#include &lt;unistd.h&gt;\n\npid_t fork(void);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5176\u4e2d\uff0cpid_t\u662f\u4e00\u4e2a\u6574\u6570\u7c7b\u578b\uff0c\u7528\u4e8e\u8868\u793a\u8fdb\u7a0bID\uff08PID\uff09\u3002fork()\u51fd\u6570\u6ca1\u6709\u53c2\u6570\u3002<\/p>\n<p>fork()\u51fd\u6570\u8c03\u7528\u540e\u4f1a\u6709\u4e24\u4e2a\u8fd4\u56de\u503c\uff1a<\/p>\n<ul>\n<li>\u5728\u7236\u8fdb\u7a0b\u4e2d\uff0cfork()\u8fd4\u56de\u5b50\u8fdb\u7a0b\u7684PID\uff08\u5b50\u8fdb\u7a0b\u7684ID\uff09\u3002<\/li>\n<li>\u5728\u5b50\u8fdb\u7a0b\u4e2d\uff0cfork()\u8fd4\u56de0\u3002<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0c\u53ef\u4ee5\u901a\u8fc7\u5224\u65adfork()\u7684\u8fd4\u56de\u503c\u6765\u786e\u5b9a\u5f53\u524d\u4ee3\u7801\u662f\u5728\u7236\u8fdb\u7a0b\u4e2d\u6267\u884c\u8fd8\u662f\u5728\u5b50\u8fdb\u7a0b\u4e2d\u6267\u884c\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u6f14\u793a\u4e86fork()\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5\uff1a<\/p>\n<pre>#include &lt;stdio.h&gt;\n#include &lt;unistd.h&gt;\n\nint main() {\n    pid_t pid = fork();\n\n    if (pid &lt; 0) {\n        fprintf(stderr, \"Fork failed.\n\");\n        return 1;\n    }\n    else if (pid == 0) {\n        printf(\"This is the child process. PID: %d\n\", getpid());\n    }\n    else {\n        printf(\"This is the parent process. Child PID: %d\n\", pid);\n    }\n\n    return 0;\n}<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u8c03\u7528\u4e86fork()\u51fd\u6570\u5e76\u6839\u636e\u8fd4\u56de\u503c\u5224\u65ad\u5f53\u524d\u662f\u5728\u7236\u8fdb\u7a0b\u8fd8\u662f\u5b50\u8fdb\u7a0b\u3002\u5728\u7236\u8fdb\u7a0b\u4e2d\uff0c\u6211\u4eec\u6253\u5370\u5b50\u8fdb\u7a0b\u7684PID\uff1b\u5728\u5b50\u8fdb\u7a0b\u4e2d\uff0c\u6211\u4eec\u6253\u5370\u81ea\u5df1\u7684PID\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cfork()\u51fd\u6570\u4f1a\u5c06\u7236\u8fdb\u7a0b\u7684\u5185\u5b58\u5b8c\u5168\u590d\u5236\u7ed9\u5b50\u8fdb\u7a0b\uff0c\u5305\u62ec\u5806\u3001\u6808\u548c\u5168\u5c40\u53d8\u91cf\u7b49\u3002\u56e0\u6b64\uff0c\u5728fork()\u4e4b\u540e\uff0c\u7236\u8fdb\u7a0b\u4e0e\u5b50\u8fdb\u7a0b\u4f1a\u5206\u522b\u6267\u884c\u5404\u81ea\u7684\u4ee3\u7801\uff0c\u4e92\u4e0d\u5e72\u6270\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fLinux\u4e2d\u7684fork\u51fd\u6570\u662f\u4ec0\u4e48\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>linux\u4e2d\u201cfork()\u201d\u662f\u4e00\u4e2a\u7cfb\u7edf\u8c03\u7528\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u8fdb\u7a0b\uff0c\u4f1a\u521b\u5efa\u5f53\u524d\u8fdb\u7a0b\u7684\u4e00\u4e2a\u526f\u672c\uff0c\u79f0\u4e3a\u5b50\u8fdb\u7a0b\uff0c\u5b50\u8fdb\u7a0b\u4e0e\u7236\u8fdb\u7a0b\u51e0\u4e4e\u5b8c\u5168\u76f8\u540c\uff0c\u5305\u62ec\u4ee3\u7801\u3001\u6570\u636e\u4ee5\u53ca\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7b49\uff0c\u5176\u539f\u578b\u4e3a\u201cpid_t fork(void);\u201d\u3002 \u5728Linux\u4e2d\uff0cfork()\u662f\u4e00\u4e2a\u7cfb\u7edf\u8c03\u7528\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u8fdb\u7a0b\u3002\u8be5\u51fd\u6570\u4f1a\u521b\u5efa\u5f53\u524d\u8fdb\u7a0b\u7684\u4e00\u4e2a\u526f\u672c\uff0c\u79f0\u4e3a\u5b50\u8fdb\u7a0b\u3002\u5b50\u8fdb\u7a0b\u4e0e\u7236\u8fdb\u7a0b\u51e0\u4e4e\u5b8c\u5168\u76f8\u540c\uff0c\u5305\u62ec\u4ee3\u7801\u3001\u6570\u636e\u4ee5\u53ca\u6253\u5f00\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7b49\u3002 fork()\u51fd\u6570\u7684\u539f\u578b\u5982\u4e0b\uff1a #include &lt;sys\/types.h&gt; #include &lt;unistd.h&gt; pid_t fork(void); \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0cpid_t\u662f\u4e00\u4e2a\u6574\u6570\u7c7b\u578b\uff0c\u7528\u4e8e\u8868\u793a\u8fdb\u7a0bID\uff08PID\uff09\u3002fork()\u51fd\u6570\u6ca1\u6709\u53c2\u6570\u3002 fork()\u51fd\u6570\u8c03\u7528\u540e\u4f1a\u6709\u4e24\u4e2a\u8fd4\u56de\u503c\uff1a \u5728\u7236\u8fdb\u7a0b\u4e2d\uff0cfork()\u8fd4\u56de\u5b50\u8fdb\u7a0b\u7684PID\uff08\u5b50\u8fdb\u7a0b\u7684ID\uff09\u3002 \u5728\u5b50\u8fdb\u7a0b\u4e2d\uff0cfork()\u8fd4\u56de0\u3002 \u56e0\u6b64\uff0c\u53ef\u4ee5\u901a\u8fc7\u5224\u65adfork()\u7684\u8fd4\u56de\u503c\u6765\u786e\u5b9a\u5f53\u524d\u4ee3\u7801\u662f\u5728\u7236\u8fdb\u7a0b\u4e2d\u6267\u884c\u8fd8\u662f\u5728\u5b50\u8fdb\u7a0b\u4e2d\u6267\u884c\u3002 \u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u6f14\u793a\u4e86fork()\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5\uff1a #include &lt;stdio.h&gt; #include &lt;unistd.h&gt; int main() { pid_t pid = fork(); if (pid &lt; 0) { fprintf(stderr, &#8220;Fork failed. &#8220;); return 1; } else if (pid == 0) { printf(&#8220;This is the child process. PID: %d &#8220;, getpid()); [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-62872","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=62872"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62872\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=62872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=62872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=62872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}