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style=\"color:#0d0016\">\u64cd\u4f5c\u7cfb\u7edf\u5bf9\u786c\u4ef6\u7ed3\u6784\u4f53\u5bf9\u8c61\u7ba1\u7406&#xff0c;\u5c31\u662f\u5bf9\u786c\u4ef6\u672c\u8eab\u8fdb\u884c\u7ba1\u7406&#xff0c;\u4e5f\u80fd\u4ece\u786c\u4ef6\u7ed3\u6784\u4f53\u5bf9\u8c61\u7684\u5c5e\u6027\u4e0a&#xff0c;\u83b7\u5f97\u786c\u4ef6\u7684\u4fe1\u606f<\/span>&#xff0c;\u5982<span style=\"color:null\">\u8d44\u6e90\u662f\u5426\u51c6\u5907\u597d<\/span>\u7b49\u7b49\u3002<\/p>\n<h3 id=\"%E6%8C%82%E8%B5%B7%E7%8A%B6%E6%80%81\">1.3\u6302\u8d77\u72b6\u6001<\/h3>\n<p>\u5f53\u4e00\u4e2a\u963b\u585e\u8fdb\u7a0b\u88ab\u64cd\u4f5c\u7cfb\u7edf\u64cd\u4f5c&#xff0c;\u5176\u5728\u5185\u5b58\u7a7a\u95f4\u7684\u4ee3\u7801\u548c\u6570\u636e\u88ab\u64cd\u4f5c\u7cfb\u7edf\u7f6e\u6362\u5230\u78c1\u76d8&#xff0c;\u800c\u8fdb\u5165\u4e0d\u80fd\u8fd0\u884c\u7684\u72b6\u6001&#xff0c;\u6211\u4eec\u5c06\u8fd9\u79cd\u72b6\u6001\u79f0\u4e3a\u6302\u8d77\u72b6\u6001<\/p>\n<p><span style=\"color:#0d0016\">\u4e3a\u4ec0\u4e48\u88ab\u6302\u8d77&#xff1f;<\/span><\/p>\n<li>\u7528\u6237\u4e3b\u52a8\u6302\u8d77<\/li>\n<li>\u64cd\u4f5c\u7cfb\u7edf\u8feb\u4e8e\u7279\u6b8a\u60c5\u51b5\u8fdb\u884c\u6302\u8d77<\/li>\n<p><span style=\"color:#0d0016\">\u6211\u4eec\u8ba8\u8bba\u4e00\u4e0b\u7b2c\u4e8c\u79cd\u60c5\u51b5<\/span><\/p>\n<p>\u5f53\u5185\u5b58\u63a5\u8fd1\u5706\u6ee1&#xff0c;\u6574\u4e2a\u8ba1\u7b97\u673a\u7684\u8fd0\u884c\u4f1a\u6536\u5230\u5f71\u54cd&#xff0c;\u751a\u81f3\u5b95\u673a<\/p>\n<p>\u4e3a\u4e86\u8ba9\u8ba1\u7b97\u673a\u80fd\u591f\u6b63\u5e38\u8fd0\u884c&#xff0c;\u64cd\u4f5c\u7cfb\u7edf\u5c31\u4f1a\u627e\u5230\u5904\u4e8e\u963b\u585e\u72b6\u6001\u7684\u8fdb\u7a0b<\/p>\n<p><span style=\"color:#fe2c24\">\u8fd9\u4e9b\u5904\u4e8e\u963b\u585e\u72b6\u6001\u7684\u8fdb\u7a0b&#xff0c;\u4e0d\u4ec5\u4e0d\u6267\u884c\u4efb\u52a1&#xff0c;\u8fd8\u5360\u636e\u5185\u5b58\u7a7a\u95f4&#xff0c;\u6ca1\u7528\u8fd8\u6d88\u8017\u8d44\u6e90<\/span><\/p>\n<p><span style=\"color:#0d0016\">\u64cd\u4f5c\u7cfb\u7edf\u5c31\u4f1a\u5c06\u8fd9\u4e9b\u6682\u65f6\u4e0d\u5de5\u4f5c\u7684\u8fdb\u7a0b\u7684\u4ee3\u7801\u548c\u6570\u636e\u8c03\u6362\u5230\u78c1\u76d8\u4e4b\u4e0a&#xff0c;\u5f85\u5230\u5185\u5b58\u7a7a\u95f4\u5bcc\u8db3&#xff0c;\u518d\u5c06\u8fd9\u4e9b\u4ee3\u7801\u548c\u6570\u636e\u91cd\u65b0\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d<\/span><\/p>\n<p><span style=\"color:#fe2c24\">\u5185\u5b58\u4e0e\u5916\u8bbe\u7684\u4ea4\u4e92&#xff0c;\u4f1a\u5927\u5927\u589e\u52a0\u65f6\u95f4\u635f\u8017<\/span>&#xff0c;\u8fd9\u5c5e\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u4e3a\u4e86\u8ba9\u8ba1\u7b97\u673a\u5b58\u6d3b\u7684\u65e0\u5948\u4e4b\u4e3e\u3002<\/p>\n<p><span style=\"color:#0d0016\">\u78c1\u76d8\u4e2d\u4fdd\u5b58\u4ece\u5185\u5b58\u800c\u6765\u7684\u6570\u636e\u4e0e\u4ee3\u7801\u7684\u533a\u57df&#xff0c;\u53eb\u4f5c\u00a0 <\/span><span style=\"color:#fe2c24\">swap\u533a<\/span><\/p>\n<p><span style=\"color:#fe2c24\">swap\u533a\u7684\u5927\u5c0f\u662f\u7528\u6237\u53ef\u4ee5\u4e3b\u52a8\u8bbe\u7f6e\u7684&#xff0c;\u5efa\u8bae\u4e3a\u5185\u5b58\u7684\u4e00\u500d<\/span>&#xff0c;\u4e0d\u5efa\u8bae\u5c06\u8be5\u533a\u57df\u8bbe\u7f6e\u8fc7\u5927&#xff0c;\u8fc7\u5927\u4f1a\u5bfc\u81f4\u64cd\u4f5c\u7cfb\u7edf\u4f9d\u8d56&#xff0c;\u4e0d\u65ad\u5c06\u4ee3\u7801\u548c\u6570\u636e\u5199\u5165\u8be5\u533a\u57df&#xff0c;\u4ece\u800c\u5bfc\u81f4\u9891\u7e41\u5730\u5185\u5b58\u548c\u5916\u8bbe\u4ea4\u4e92&#xff0c;\u5927\u5927\u964d\u4f4e\u6548\u7387<\/p>\n<h2 id=\"Linux%E4%B8%8B%E7%9A%84%E8%BF%9B%E7%A8%8B%E7%8A%B6%E6%80%81\">2.Linux\u4e0b\u7684\u8fdb\u7a0b\u72b6\u6001<\/h2>\n<p>\u6211\u4eec\u4e0a\u9762\u4ecb\u7ecd\u7684\u8fdb\u7a0b\u72b6\u6001&#xff0c;\u662f\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u57fa\u672c\u8fdb\u7a0b\u72b6\u6001<\/p>\n<p>\u6bcf\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u90fd\u4f1a\u6709&#xff0c;\u4f46\u4e0d\u4e00\u5b9a\u548c\u4e0a\u9762\u7684\u57fa\u672c\u72b6\u6001\u540d\u5b57\u76f8\u540c&#xff0c;\u5373\u540c\u5185\u4e0d\u540c\u5916<\/p>\n<p><span style=\"color:#0d0016\">\u4ee5\u4e0b\u662fLinux\u4e2d\u7684\u5177\u4f53\u8fdb\u7a0b\u72b6\u6001<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"211\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418213653-6802c5f5dd5f4.jpg\" width=\"611\" \/><\/p>\n<p>\u5176\u4e2d&#xff0c;R\u8fd0\u884c\u72b6\u6001\u5c31\u662f\u6211\u4eec\u4e0a\u9762\u7684\u8fd0\u884c\u72b6\u6001&#xff0c;\u7761\u7720\u72b6\u6001\u5c31\u662f\u963b\u585e\u72b6\u6001<\/p>\n<p><span style=\"color:#956fe7\"><span style=\"background-color:#ffd900\">\u6765\u6d45\u6d45\u770b\u4e00\u6bb5\u6709\u610f\u601d\u7684\u4ee3\u7801<\/span><\/span><\/p>\n<p>#include&lt;iostream&gt;<br \/>\n#include&lt;unistd.h&gt;<\/p>\n<p>int main(){<br \/>\n    while(1){<br \/>\n        sleep(1);<br \/>\n        printf(&#034;hello fun_code!\\\\n&#034;);<br \/>\n    }<br \/>\n    return 0;<br \/>\n} <\/p>\n<p><span style=\"color:#956fe7\"><span style=\"background-color:#ffd900\">\u6734\u7d20\u65e0\u534e&#xff0c;\u8fd0\u884c\u4e00\u4e0b&#xff0c;\u5e76\u4f7f\u7528 ps ajx \u8fdb\u884c\u67e5\u770b<\/span><\/span><\/p>\n<p>\u00a0<img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"49\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418213654-6802c5f632a42.png\" width=\"647\" \/><\/p>\n<p><span style=\"color:#0d0016\">\u53ef\u4ee5\u53d1\u73b0&#xff0c;\u8be5\u8fdb\u7a0b\u5904\u4e8e\u7761\u7720\u72b6\u6001,\u8fd9\u662f\u4e3a\u4ec0\u4e48\u5462&#xff1f;<\/span><\/p>\n<p>\u4ee3\u7801\u4e2d\u7684\u6253\u5370\u8bed\u53e5&#xff0c;printf\u662f\u5411\u663e\u793a\u5668\u4e2d\u6253\u5370&#xff0c;\u800c\u663e\u793a\u5668\u8d44\u6e90\u4e5f\u662f\u9700\u8981\u51c6\u5907\u7684&#xff0c;\u5f53\u663e\u793a\u5668\u8d44\u6e90\u6ca1\u6709\u51c6\u5907\u597d\u7684\u65f6\u5019&#xff0c;\u8be5\u8fdb\u7a0b\u5c31\u4f1a\u8fdb\u5165\u963b\u585e\u961f\u5217&#xff0c;\u56e0\u4e3a\u9891\u7e41\u7684\u6253\u5370&#xff0c;\u5bfc\u81f4\u8be5\u8fdb\u7a0b\u4e0d\u65ad\u8fdb\u5165\u963b\u585e\u961f\u5217&#xff0c;\u53c8\u4e0d\u65ad\u5524\u9192\u8fd0\u884c&#xff0c;\u4f46Linux\u64cd\u4f5c\u7cfb\u7edf\u4e3a\u4e86\u65b9\u4fbf&#xff0c;\u5c31\u4f1a\u5c06\u8be5\u8fdb\u7a0b\u7f6e\u4e3a\u7761\u7720\u72b6\u6001&#xff0c;\u5076\u5c14\u6709\u8fd0\u884c\u72b6\u6001<\/p>\n<p>\u5176\u4e2d&#xff0c;\u8fdb\u7a0b\u7684\u72b6\u6001\u7684\u90fd\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u51b3\u5b9a\u7684&#xff0c;\u64cd\u4f5c\u7cfb\u7edf\u518d\u6839\u636e\u8fd9\u4e2a\u72b6\u6001\u5bf9\u8fdb\u7a0b\u5b89\u6392<\/p>\n<h3><span style=\"color:#0d0016\">2.1\u6df1\u5ea6\u7761\u7720\u72b6\u6001(disk sleep)<\/span><\/h3>\n<p>\u4e0a\u9762\u4ecb\u7ecd\u7684\u7761\u7720\u72b6\u6001\u5c5e\u4e8e\u6d45\u5ea6\u7761\u7720&#xff0c;\u6d45\u5ea6\u7761\u7720\u7684\u8fdb\u7a0b\u662f\u53ef\u4ee5\u88ab\u64cd\u4f5c\u7cfb\u7edf\u7ec8\u6b62\u7684<\/p>\n<p>\u53ea\u8981\u7528\u6237\u5411\u64cd\u4f5c\u7cfb\u7edf\u53d1\u51fa\u7ec8\u6b62\u8fdb\u7a0b\u7684\u8bf7\u6c42&#xff0c;\u6d45\u5ea6\u7761\u7720\u7684\u8fdb\u7a0b\u5c31\u4f1a\u88ab\u7ec8\u6b62<\/p>\n<p>\u800c\u6df1\u5ea6\u7761\u7720\u7684\u8fdb\u7a0b&#xff0c;\u4e0d\u4f1a\u88ab\u64cd\u4f5c\u7cfb\u7edf\u5f3a\u884c\u7ec8\u6b62<\/p>\n<p><span style=\"color:#0d0016\">\u4e3a\u4ec0\u4e48\u4f1a\u6709\u6df1\u5ea6\u7761\u7720\u5462&#xff1f;<\/span><\/p>\n<p>\u8fdb\u7a0b\u8bbf\u95ee\u8d44\u6e90\u800c\u5f97\u4e0d\u5230\u8d44\u6e90\u7684\u65f6\u5019&#xff0c;\u5c31\u4f1a\u9677\u5165\u7761\u7720<\/p>\n<p>\u5982\u679c\u6b64\u65f6\u7684\u8fdb\u7a0b&#xff0c;\u662f\u5728\u5bf9\u78c1\u76d8\u5199\u5165\u6570\u636e&#xff0c;\u5c06\u6570\u636e\u4ea4\u7ed9\u78c1\u76d8\u5199\u5165\u7684\u65f6\u5019&#xff0c;\u8fdb\u7a0b\u4e5f\u4f1a\u8fdb\u5165\u7b49\u5f85\u961f\u5217&#xff0c;\u7b49\u5f85\u5199\u5165\u6570\u636e\u5b8c\u6210\u00a0<\/p>\n<p>\u8fd9\u65f6\u5019&#xff0c;\u5982\u679c\u7ec8\u6b62\u8be5\u8fdb\u7a0b&#xff0c;\u6211\u4eec\u5c06\u65e0\u6cd5\u5f97\u77e5\u6570\u636e\u5199\u5165\u78c1\u76d8\u662f\u5426\u5b8c\u6210&#xff0c;\u5982\u679c\u4e25\u91cd\u751a\u81f3\u4f1a\u5bfc\u81f4\u6570\u636e\u5728\u78c1\u76d8\u7684\u4f4d\u7f6e\u4e22\u5931\u3002<\/p>\n<p>\u5982\u679c\u6570\u636e\u5341\u5206\u91cd\u8981&#xff0c;\u4e22\u5931\u7684\u8bdd\u5c06\u9020\u6210\u65e0\u6cd5\u633d\u56de\u7684\u635f\u5931&#xff0c;\u4e3a\u4e86\u7167\u987e\u8fd9\u79cd\u5411\u78c1\u76d8\u5199\u5165\u6570\u636e\u7684\u8fdb\u7a0b&#xff0c;\u64cd\u4f5c\u7cfb\u7edf\u5c31\u4f1a\u5c06\u5176\u8bbe\u7f6e\u4e3a\u6df1\u5ea6\u7761\u7720\u72b6\u6001&#xff0c;\u65e0\u8bba\u53d1\u751f\u4ec0\u4e48&#xff0c;\u90fd\u4e0d\u4f1a\u5f3a\u884c\u7ec8\u6b62\u8fd9\u4e2a\u8fdb\u7a0b&#xff01;<\/p>\n<h3><span style=\"color:#0d0016\">2.2\u6682\u505c\u72b6\u6001(T)<\/span><\/h3>\n<p>\u5728Linux\u547d\u4ee4\u884c\u4e2d&#xff0c;\u53ef\u4ee5\u53d1\u9001\u6682\u505c\u4fe1\u53f7\u7ed9\u76ee\u6807\u8fdb\u7a0b&#xff0c;\u8ba9\u5176\u8fdb\u5165\u7b49\u5f85\u961f\u5217&#xff0c;\u8fd9\u79cd\u8fdb\u7a0b\u72b6\u6001\u6210\u4e3a\u6682\u505c\u72b6\u6001<\/p>\n<h3>2.3\u8ffd\u8e2a\u6682\u505c\u72b6\u6001(T)<\/h3>\n<p>\u8fdb\u7a0b\u7684\u6682\u505c\u72b6\u6001\u662f\u53ef\u4ee5\u63a7\u5236\u7684&#xff0c;\u5982\u4f7f\u7528debug\u8fdb\u7a0b\u8c03\u8bd5\u53e6\u4e00\u8fdb\u7a0b&#xff0c;\u53e6\u4e00\u8fdb\u7a0b\u6240\u5904\u4e8e\u7684\u72b6\u6001\u5c31\u662f\u6700\u7ec8\u6682\u505c\u72b6\u6001<\/p>\n<h3>2.4\u6b7b\u4ea1\u72b6\u6001(X)<\/h3>\n<p>\u5f53\u8fdb\u7a0b\u5b8c\u6210\u4efb\u52a1&#xff0c;\u4ee3\u7801\u548c\u6570\u636e&#xff0c;\u4ee5\u53caPCB\u5168\u90e8\u5728\u5185\u5b58\u7a7a\u95f4\u4e2d\u88ab\u9500\u6bc1\u65f6&#xff0c;\u8fdb\u7a0b\u72b6\u6001\u5c31\u662f\u6b7b\u4ea1\u72b6\u6001<\/p>\n<h2 id=\"%E5%83%B5%E5%B0%B8%E8%BF%9B%E7%A8%8B\" style=\"background-color:transparent\">3.\u50f5\u5c38\u8fdb\u7a0b<\/h2>\n<p>\u5728\u300a\u8f7b\u677e\u641e\u5b9a\u8fdb\u7a0bfork\u300b\u4e00\u6587\u4e2d&#xff0c;\u6211\u4eec\u63d0\u8fc7&#xff0c;\u6211\u4eec\u521b\u5efa\u8fdb\u7a0b\u662f\u4e3a\u4e86\u8ba9\u65b0\u7684\u8fdb\u7a0b\u66ff\u6211\u4eec\u5b8c\u6210\u5176\u4ed6\u4efb\u52a1<\/p>\n<p><span style=\"color:#0d0016\">\u65b0\u8fdb\u7a0b\u53bb\u6267\u884c\u4efb\u52a1\u5c31\u591f\u4e86\u5417&#xff1f;<\/span><\/p>\n<p>\u6211\u4eec\u4e5f\u9700\u8981\u77e5\u9053\u4efb\u52a1\u5b8c\u6210\u5f97\u5982\u4f55<\/p>\n<p><span style=\"color:#0d0016\">\u5982\u4f55\u77e5\u9053\u5462&#xff1f;<\/span><\/p>\n<p>\u8fdb\u7a0b\u5b8c\u6210\u76f8\u5e94\u4efb\u52a1\u5c31\u4f1a\u9000\u51fa&#xff0c;\u5b83\u7684\u9000\u51fa\u4fe1\u606f\u5c31\u9700\u8981\u88ab\u6211\u4eec\u83b7\u53d6&#xff0c;\u6709\u4e86\u8fd9\u4e2a\u9000\u51fa\u4fe1\u606f&#xff0c;\u6211\u4eec\u5c31\u77e5\u9053\u8fdb\u7a0b\u4efb\u52a1\u5b8c\u6210\u5f97\u5982\u4f55<\/p>\n<p><span style=\"color:#0d0016\">\u8fd9\u4e2a\u9000\u51fa\u4fe1\u606f\u5728\u54ea\u91cc&#xff1f;<\/span><\/p>\n<p>\u4e00\u5207\u90fd\u5728\u8fdb\u7a0b\u7684PCB\u5f53\u4e2d&#xff01;<\/p>\n<p>\u6240\u4ee5&#xff0c;\u5f53\u4e00\u4e2a\u8fdb\u7a0b\u9000\u51fa\u7684\u65f6\u5019&#xff0c;\u6211\u4eec\u4e0d\u4f1a\u8ba9\u5176\u7acb\u523b\u9000\u51fa&#xff0c;\u6211\u4eec\u5f97\u77e5\u9053\u8fd9\u4e2a\u8fdb\u7a0b\u7684\u4efb\u52a1\u5b8c\u6210\u60c5\u51b5&#xff0c;\u8fdb\u7a0b\u9000\u51fa\u6709\u4e24\u4e2a\u9636\u6bb5<\/p>\n<li>\u8fdb\u7a0b\u9000\u51fa&#xff0c;\u4ee3\u7801\u548c\u6570\u636e\u5728\u5185\u5b58\u4e2d\u88ab\u9500\u6bc1&#xff0c;\u9000\u51fa\u4fe1\u606f\u88ab\u64cd\u4f5c\u7cfb\u7edf\u5199\u5165\u8fdb\u7a0b\u7684PCB\u5f53\u4e2d<\/li>\n<li>\u8fdb\u7a0b\u7684PCB\u88ab\u8bfb\u53d6&#xff0c;PCB\u5728\u5185\u5b58\u7a7a\u95f4\u4e2d\u88ab\u9500\u6bc1<\/li>\n<p><span style=\"color:#fe2c24\">\u6211\u4eec\u5c06\u8fdb\u7a0b\u9000\u51fa\u65f6&#xff0c;\u4ee3\u7801\u548c\u6570\u636e\u88ab\u9500\u6bc1&#xff0c;\u4f46PCB\u4ecd\u7136\u5b58\u5728&#xff0c;\u9000\u51fa\u4fe1\u606f\u6ca1\u6709\u88ab\u83b7\u53d6\u65f6\u7684\u72b6\u6001<\/span>\u79f0\u4e3a<span style=\"color:#fe2c24\">\u50f5\u5c38\u72b6\u6001<\/span>&#xff01;\u5904\u4e8e\u50f5\u5c38\u72b6\u6001\u7684\u8fdb\u7a0b&#xff0c;\u5373\u4e3a<span style=\"color:#fe2c24\">\u50f5\u5c38\u8fdb\u7a0b<\/span><\/p>\n<p><span style=\"color:#fe2c24\">\u56de\u6536\u8fdb\u7a0bPCB\u7684\u64cd\u4f5c\u5fc5\u987b\u662f\u8fdb\u7a0b\u7684\u521b\u5efa\u8005\u5b8c\u6210\u7684&#xff0c;\u6240\u4ee5\u4e00\u822c\u56de\u6536\u8fdb\u7a0b\u7684\u5c31\u662f\u521b\u5efa\u8be5\u8fdb\u7a0b\u7684\u7236\u8fdb\u7a0b\u6216\u8005\u64cd\u4f5c\u7cfb\u7edf<\/span><\/p>\n<p>\u8fd9\u4e5f\u5c31\u662f\u4e3a\u4ec0\u4e48\u6240\u6709\u7684\u5b50\u8fdb\u7a0b\u5fc5\u987b\u6709\u7236\u8fdb\u7a0b\u7684\u539f\u56e0<\/p>\n<p>\u5982\u679c\u5b50\u8fdb\u7a0b\u7684PCB\u7684\u9000\u51fa\u4fe1\u606f&#xff0c;\u4e00\u76f4\u6ca1\u6709\u88ab\u7236\u8fdb\u7a0b\u6216\u8005\u64cd\u4f5c\u7cfb\u7edf\u83b7\u53d6&#xff0c;\u8be5\u8fdb\u7a0b\u5c31\u4f1a\u4e00\u76f4\u662f\u50f5\u5c38\u72b6\u6001&#xff0c;\u5176PCB\u5c31\u4f1a\u4e00\u76f4\u5b58\u5728\u4e8e\u5185\u5b58\u7a7a\u95f4&#xff0c;\u9020\u6210\u5185\u5b58\u6cc4\u9732<\/p>\n<p>\u5982\u679c\u5b50\u8fdb\u7a0b\u7684PCB\u4e00\u76f4\u6ca1\u6709\u88ab\u7236\u8fdb\u7a0b\u6216\u8005\u64cd\u4f5c\u7cfb\u7edf\u83b7\u53d6&#xff0c;\u8be5\u8fdb\u7a0bPCB\u5c31\u9700\u8981\u88ab\u64cd\u4f5c\u7cfb\u7edf\u7ba1\u7406\u7ef4\u62a4&#xff0c;\u4e00\u5b9a\u7a0b\u5ea6\u589e\u52a0\u64cd\u4f5c\u7cfb\u7edf\u4e0d\u5fc5\u8981\u7684\u5de5\u4f5c\u91cf<\/p>\n<p>\u56e0\u6b64&#xff0c;\u83b7\u53d6\u50f5\u5c38\u8fdb\u7a0b\u7684PCB\u523b\u4e0d\u5bb9\u7f13&#xff0c;\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 wait\u51fd\u6570 \u548c waitpid\u51fd\u6570&#xff0c;\u6765\u56de\u6536\u5b50\u8fdb\u7a0b<\/p>\n<h3>3.1wait\u51fd\u6570<\/h3>\n<p>wait()\u00a0\u51fd\u6570\u4f1a\u963b\u585e\u8c03\u7528\u8fdb\u7a0b&#xff0c;\u76f4\u5230\u4efb\u610f\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u7ec8\u6b62\u3002\u5b83\u8fd4\u56de\u7ec8\u6b62\u5b50\u8fdb\u7a0b\u7684\u8fdb\u7a0b ID&#xff08;PID&#xff09;&#xff0c;\u5e76\u5c06\u5b50\u8fdb\u7a0b\u7684\u9000\u51fa\u72b6\u6001\u5b58\u50a8\u5728\u00a0status\u00a0\u53c2\u6570\u4e2d,\u5305\u542b\u4e8esys\/types.h \u548c sys\/wait.h \u5934\u6587\u4ef6\u4e2d<\/p>\n<p><span style=\"color:#956fe7\">\u51fd\u6570\u9020\u578b<\/span><\/p>\n<p>pid_t wait(int *status); <\/p>\n<p><span style=\"color:#956fe7\">\u53c2\u6570\u8bf4\u660e<\/span><\/p>\n<ul>\n<li>status&#xff1a;\u6307\u5411\u4e00\u4e2a\u6574\u6570\u7684\u6307\u9488&#xff0c;\u7528\u4e8e\u5b58\u50a8\u5b50\u8fdb\u7a0b\u7684\u9000\u51fa\u72b6\u6001\u3002\u53ef\u4ee5\u4f7f\u7528\u5b8f&#xff08;\u5982\u00a0WIFEXITED\u3001WEXITSTATUS\u00a0\u7b49&#xff09;\u6765\u89e3\u6790\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p><span style=\"color:#956fe7\">\u8fd4\u56de\u503c<\/span><\/p>\n<ul>\n<li>\u6210\u529f\u65f6\u8fd4\u56de\u7ec8\u6b62\u5b50\u8fdb\u7a0b\u7684 PID\u3002<\/li>\n<li>\u5931\u8d25\u65f6\u8fd4\u56de\u00a0-1&#xff08;\u4f8b\u5982\u6ca1\u6709\u5b50\u8fdb\u7a0b&#xff09;<\/li>\n<\/ul>\n<p><span style=\"color:#956fe7\">\u57fa\u672c\u7528\u6cd5<\/span><\/p>\n<p>int status;<br \/>\npid_t child_pid &#061; wait(&amp;status); <\/p>\n<p><span style=\"color:#fe2c24\">\u6ce8\u610f&#xff1a;<\/span>wait\u662f\u7b49\u5f85\u5f53\u524d\u7236\u8fdb\u7a0b\u7684\u6240\u6709\u5b50\u8fdb\u7a0b&#xff0c;\u7b49\u5f85\u6210\u529f\u4e00\u4e2a\u5c31\u76f4\u63a5\u8fd4\u56de\u7ed3\u679c\u00a0<\/p>\n<h3>3.2waitpid\u51fd\u6570<\/h3>\n<p>waitpid\u51fd\u6570 \u6bd4 wait\u51fd\u6570 \u66f4\u7075\u6d3b&#xff0c;\u53ef\u4ee5\u6307\u5b9a\u8981\u7b49\u5f85\u7684\u5b50\u8fdb\u7a0b PID&#xff0c;\u5e76\u63d0\u4f9b\u975e\u963b\u585e\u9009\u9879\u3002<\/p>\n<p><span style=\"color:#956fe7\">\u51fd\u6570\u9020\u578b<\/span><\/p>\n<p>#include &lt;sys\/types.h&gt;<br \/>\n#include &lt;sys\/wait.h&gt;<\/p>\n<p>pid_t waitpid(pid_t pid, int *status, int options); <\/p>\n<p><span style=\"color:#956fe7\">\u53c2\u6570\u8bf4\u660e<\/span><\/p>\n<ul>\n<li>pid&#xff1a;\u6307\u5b9a\u5b50\u8fdb\u7a0b\u7684pid<\/li>\n<li>status&#xff1a;\u540c\u00a0wait()&#xff0c;\u7528\u4e8e\u5b58\u50a8\u5b50\u8fdb\u7a0b\u7684\u9000\u51fa\u72b6\u6001\u3002<\/li>\n<li>options&#xff1a;\u63a7\u5236\u51fd\u6570\u884c\u4e3a\u7684\u9009\u9879&#xff0c;WNOHANG\u4e3a\u975e\u963b\u585e\u7b49\u5f85&#xff0c;\u6ca1\u6709\u7ed3\u679c\u7acb\u523b\u8fd4\u56de0&#xff0c;WUNTRACED\u4f1a\u7b49\u5f85\u5b50\u8fdb\u7a0b\u505c\u6b62\u6216\u7ec8\u6b62\u3002<\/li>\n<\/ul>\n<p><span style=\"color:#956fe7\">\u8fd4\u56de\u503c\u8bf4\u660e<\/span><\/p>\n<ul>\n<li>\u6210\u529f\u65f6\u8fd4\u56de\u7ec8\u6b62\u5b50\u8fdb\u7a0b\u7684 PID\u3002<\/li>\n<li>\u5982\u679c\u6307\u5b9a\u4e86\u00a0WNOHANG\u00a0\u4e14\u6ca1\u6709\u5b50\u8fdb\u7a0b\u7ec8\u6b62&#xff0c;\u8fd4\u56de 0\u3002<\/li>\n<li>\u5931\u8d25\u65f6\u8fd4\u56de\u00a0-1\u3002<\/li>\n<\/ul>\n<p><span style=\"color:#956fe7\">\u57fa\u672c\u7528\u6cd5<\/span><\/p>\n<p>int status;<br \/>\npid_t child_pid &#061; waitpid(pid, &amp;status, 0); <\/p>\n<h2 id=\"%E5%AD%A4%E5%84%BF%E8%BF%9B%E7%A8%8B%C2%A0\">4.\u5b64\u513f\u8fdb\u7a0b\u00a0<\/h2>\n<p>\u5b50\u8fdb\u7a0b\u4e00\u5b9a\u662f\u7236\u8fdb\u7a0b\u521b\u5efa\u7684&#xff0c;\u5f53\u7236\u8fdb\u7a0b\u6bd4\u5b50\u8fdb\u7a0b\u5148\u9000\u51fa\u7684\u65f6\u5019&#xff0c;\u5b50\u8fdb\u7a0b\u5c31\u76f8\u5f53\u4e8e\u6ca1\u6709\u4e86\u7236\u8fdb\u7a0b&#xff0c;\u6211\u4eec\u5c06\u8fd9\u79cd\u6ca1\u6709\u7236\u8fdb\u7a0b\u7684\u8fdb\u7a0b&#xff0c;\u79f0\u4e3a\u5b64\u513f\u8fdb\u7a0b<\/p>\n<p>\u6ca1\u6709\u7236\u8fdb\u7a0b&#xff0c;\u5c31\u6ca1\u6709\u529e\u6cd5\u56de\u6536\u5b64\u513f\u8fdb\u7a0b\u7684\u9000\u51fa\u4fe1\u606f<\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u5b64\u513f\u8fdb\u7a0b\u7684\u9000\u51fa\u4fe1\u606f\u6ca1\u6709\u7236\u8fdb\u7a0b\u56de\u6536&#xff0c;\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u4e3a\u5176\u5206\u914d\u4e00\u4e2a\u7236\u8fdb\u7a0b&#xff0c;\u8ba9\u8fd9\u4e2a\u7236\u8fdb\u7a0b\u5b8c\u6210\u5bf9\u5b50\u8fdb\u7a0b\u7684\u9000\u51fa\u4fe1\u606f\u83b7\u53d6&#xff0c;\u8fd9\u4e2a\u65b0\u5206\u914d\u7684\u7236\u8fdb\u7a0b\u4e00\u822c\u662f\u64cd\u4f5c\u7cfb\u7edf\u672c\u8eab&#xff0c;\u6240\u4ee5\u6211\u4eec\u624d\u4f1a\u8bf4&#xff0c;\u5b50\u8fdb\u7a0b\u7684PCB\u4e2d\u7684\u9000\u51fa\u4fe1\u606f&#xff0c;\u4e00\u822c\u7531\u7236\u8fdb\u7a0b\u6216\u8005\u5b50\u8fdb\u7a0b\u83b7\u53d6\u3002<\/p>\n<p><span style=\"color:#956fe7\"><span style=\"background-color:#ffd900\">\u9a8c\u8bc1\u4e00\u4e0b&#xff1a;\u65b0\u5206\u914d\u7684\u7236\u8fdb\u7a0b\u662f\u64cd\u4f5c\u7cfb\u7edf\u672c\u8eab<\/span><\/span><\/p>\n<p>pid_t pid &#061; fork();<\/p>\n<p>    if (pid &#061;&#061; 0) {<br \/>\n        \/\/ \u5b50\u8fdb\u7a0b<br \/>\n        printf(&#034;Child process is running, PID: %d\\\\n&#034;, getpid());<br \/>\n        sleep(10); \/\/ \u7b49\u5f85\u7236\u8fdb\u7a0b\u7ec8\u6b62<br \/>\n        printf(&#034;Child process is still running, now parent PID: %d\\\\n&#034;, getppid());<br \/>\n    } else if (pid &gt; 0) {<br \/>\n        \/\/ \u7236\u8fdb\u7a0b<br \/>\n        printf(&#034;Parent process is running, PID: %d\\\\n&#034;, getpid());<br \/>\n        sleep(2); \/\/ \u7236\u8fdb\u7a0b\u63d0\u524d\u7ec8\u6b62<br \/>\n        printf(&#034;Parent process is done\\\\n&#034;);<br \/>\n    } else {<br \/>\n        perror(&#034;fork failed&#034;);<br \/>\n        return 1;<br \/>\n    }<\/p>\n<p>    return 0; <\/p>\n<p>\u5728\u8fd9\u6bb5\u4ee3\u7801\u4e0b&#xff0c;\u7236\u8fdb\u7a0b\u4f1a\u6bd4\u5b50\u8fdb\u7a0b\u5148\u9000\u51fa&#xff0c;\u5b50\u8fdb\u7a0b\u4f1a\u91cd\u65b0\u88ab\u64cd\u4f5c\u7cfb\u7edf\u5206\u914d\u7236\u8fdb\u7a0b<\/p>\n<p><span style=\"color:#956fe7\">\u8fd0\u884c\u4e00\u4e0b<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"110\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418213654-6802c5f64bfcd.png\" width=\"796\" \/><\/p>\n<p><span style=\"color:#fe2c24\"><span style=\"background-color:#ffd900\">\u8fd9\u4e2apid\u4e3a1\u7684\u8fdb\u7a0b&#xff0c;\u5c31\u662f\u6700\u5148\u542f\u52a8\u7684\u8fdb\u7a0b\u2014\u2014\u64cd\u4f5c\u7cfb\u7edf&#xff01;\u00a0<\/span><\/span><\/p>\n<hr \/>\n<h2 id=\"%E7%BB%93%E8%AF%AD\">\u7ed3\u8bed<\/h2>\n<p>\u00a0 \u901a\u8fc7\u672c\u6b21\u5173\u4e8e\u8fdb\u7a0b\u72b6\u6001\u7684\u8bb2\u89e3&#xff0c;\u6211\u4eec\u4ece\u8fdb\u7a0b\u7684\u57fa\u672c\u72b6\u6001\u51fa\u53d1&#xff0c;\u6df1\u5165\u63a2\u8ba8\u4e86\u8fdb\u7a0b\u7684\u751f\u547d\u5468\u671f\u53ca\u5176\u72b6\u6001\u8f6c\u6362\u673a\u5236\u3002\u65e0\u8bba\u662f\u8fdb\u7a0b\u7684\u521b\u5efa\u3001\u5c31\u7eea\u3001\u8fd0\u884c\u3001\u963b\u585e\u8fd8\u662f\u7ec8\u6b62&#xff0c;\u6bcf\u4e00\u79cd\u72b6\u6001\u90fd\u53cd\u6620\u4e86\u64cd\u4f5c\u7cfb\u7edf\u5bf9\u8d44\u6e90\u7ba1\u7406\u548c\u4efb\u52a1\u8c03\u5ea6\u7684\u7cbe\u5999\u8bbe\u8ba1\u3002<\/p>\n<p>\u00a0 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