{"id":677,"date":"2022-08-25T21:49:49","date_gmt":"2022-08-25T13:49:49","guid":{"rendered":"https:\/\/www.lcettsg.cn\/code\/?p=677"},"modified":"2022-09-25T23:00:09","modified_gmt":"2022-09-25T15:00:09","slug":"%e6%9d%8e%e6%85%a7%e7%90%b4-apue-%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/www.lcettsg.cn\/code\/?p=677","title":{"rendered":"\u674e\u6167\u7434 Linux_c\u7cfb\u7edf\u5f00\u53d1\u5b66\u4e60\u7b14\u8bb0"},"content":{"rendered":"\n

C\u8bed\u8a00\u53d1\u5c55\u53f2\uff1a<\/h2>\n\n\n\n

1960\u5e74\uff0c\u539f\u578bA\u8bed\u8a00->ALGOL\u8bed\u8a00<\/p>\n\n\n\n

1963\u5e74\uff0c\u5251\u6865\u5927\u5b66CPL\u8bed\u8a00<\/p>\n\n\n\n

1967\u5e74\uff0c\u5251\u6865\u5927\u5b66BCPL\u8bed\u8a00<\/p>\n\n\n\n

1970\u5e74\uff0c\u8d1d\u5c14\u5b9e\u9a8c\u5ba4\u5bf9BCPL\u8bed\u8a00\u8fdb\u884c\u6539\u8fdb\uff0c\u505a\u6210B\u8bed\u8a00\u3002\u7528B\u8bed\u8a00\u548c\u6c47\u7f16\u5199\u4e86UNIX\u3002<\/p>\n\n\n\n

1973\u5e74\uff0c\u8d1d\u5c14\u5b9e\u9a8c\u5ba4\uff0cRiche\u5bf9B\u8bed\u8a00\u8fdb\u884c\u6539\u52a8\uff0c\u5199\u4e86C\u8bed\u8a00\uff0c\u7528C\u8bed\u8a00\u548c\u6c47\u7f16\u91cd\u5199\u4e86UNIX\u3002<\/p>\n\n\n\n

C\u8bed\u8a00\u7279\u70b9\uff1a<\/h2>\n\n\n\n

1.\u57fa\u7840\u6027\u8bed\u8a00<\/p>\n\n\n\n

2.\u8bed\u6cd5\u7b80\u6d01\u3001\u7d27\u51d1\u3001\u65b9\u4fbf\u3001\u7075\u6d3b<\/p>\n\n\n\n

3.\u8fd0\u7b97\u7b26\u3001\u6570\u636e\u7ed3\u6784\u4e30\u5bcc<\/p>\n\n\n\n

4.\u7ed3\u6784\u5316\u3001\u6a21\u5757\u5316\u7f16\u7a0b<\/p>\n\n\n\n

5.\u79fb\u690d\u6027\u597d\uff0c\u6267\u884c\u6548\u7387\u9ad8<\/p>\n\n\n\n

6.\u5141\u8bb8\u76f4\u63a5\u5bf9\u786c\u4ef6\u64cd\u4f5c\u3002<\/p>\n\n\n\n

\u5b66\u4e60\u5efa\u8bae\uff1a<\/h2>\n\n\n\n

1.\u638c\u63e1\u6b63\u5e38\u7684\u6982\u5ff5<\/p>\n\n\n\n

2.\u52a8\u624b\u80fd\u529b<\/p>\n\n\n\n

3.\u9605\u8bfb\u4f18\u79c0\u7684\u7a0b\u5e8f\u6bb5<\/p>\n\n\n\n

4.\u5927\u91cf\u7ec3\u4e60\uff0c\u9762\u8bd5\u9898<\/p>\n\n\n\n

C\u8bfe\u7a0b\u8bb2\u89e3\u601d\u8def\uff1a<\/h2>\n\n\n\n

1.\u57fa\u672c\u6982\u5ff5<\/p>\n\n\n\n

2.\u6570\u636e\u7c7b\u578b\uff0c\u8fd0\u7b97\u7b26\u548c\u8868\u8fbe\u5f0f<\/p>\n\n\n\n

3.\u8f93\u5165\u8f93\u51fa\u4e13\u9898<\/p>\n\n\n\n

4.\u6d41\u7a0b\u63a7\u5236<\/p>\n\n\n\n

5.\u6570\u7ec4<\/p>\n\n\n\n

6.\u6307\u9488<\/p>\n\n\n\n

7.\u51fd\u6570<\/p>\n\n\n\n

8.\u6784\u9020\u7c7b\u578b<\/p>\n\n\n\n

9.\u52a8\u6001\u5185\u5b58\u7ba1\u7406<\/p>\n\n\n\n

10.\u8c03\u8bd5\u5de5\u5177\uff08gdb\uff0cmake\uff09<\/p>\n\n\n\n

11.\u5e38\u7528\u7684\u5e93\u51fd\u6570<\/p>\n\n\n\n

\u5e73\u53f0\u4ecb\u7ecd\uff1a<\/h2>\n\n\n\n

64\u4f4dredhat6,vim,gcc(make)<\/p>\n\n\n\n

\u4e00\u3001\u57fa\u672c\u6982\u5ff5<\/h2>\n\n\n\n

\u00b71.\u4ee5helloworld\u4e3a\u4f8b\u5bf9\u5199\u7a0b\u5e8f\u7684\u601d\u8def\u63d0\u51fa\u5982\u4e0b\u8981\u6c42<\/p>\n\n\n\n

\uff081\uff09\u5934\u6587\u4ef6\u6b63\u786e\u5305\u542b\u7684\u91cd\u8981\u6027<\/p>\n\n\n\n

\uff082\uff09\u4ee5\u51fd\u6570\u4e3a\u5355\u4f4d\u6765\u8fdb\u884c\u7a0b\u5e8f\u7f16\u5199\u3002<\/p>\n\n\n\n

\uff083\uff09\u58f0\u660e\u90e8\u5206+\u5b9e\u73b0\u90e8\u5206<\/p>\n\n\n\n

\uff084\uff09return 0;<\/p>\n\n\n\n

\uff085\uff09\u591a\u7528\u7a7a\u683c\u7a7a\u884c<\/p>\n\n\n\n

\uff086\uff09\u6dfb\u52a0\u6ce8\u91ca<\/p>\n\n\n\n

2\u3001\u7b97\u6cd5\uff1a\u89e3\u51b3\u95ee\u9898\u7684\u65b9\u6cd5\uff08\u6d41\u7a0b\u56fe\uff0cNS\u56fe\uff0c\u6709\u9650\u72b6\u6001\u673aFSM\uff09;<\/p>\n\n\n\n

3\u3001\u7a0b\u5e8f\uff1a\u7528\u67d0\u79cd\u8bed\u8a00\u5b9e\u73b0\u7b97\u6cd5<\/p>\n\n\n\n

4\u3001\u8fdb\u7a0b<\/p>\n\n\n\n

5\u3001\u9632\u6b62\u5199\u8d8a\u754c\uff0c\u9632\u6b62\u5185\u5b58\u6cc4\u9732\uff0c\u8c01\u6253\u5f00\u8c01\u5173\u95ed\uff0c\u8c01\u7533\u8bf7\u8c01\u91ca\u653e\u3002<\/p>\n\n\n\n

\u4e8c.\u6570\u636e\u7c7b\u578b\uff0c\u8fd0\u7b97\u7b26\u548c\u8868\u8fbe\u5f0f<\/h2>\n\n\n\n

1.\u6570\u636e\u7c7b\u578b<\/h2>\n\n\n\n
\"\"
\uff081\uff09\u6240\u5360\u5b57\u8282\u6570\uff1a\u968f\u673a\u5668\u786c\u4ef6\u4e0d\u540c\u800c\u4e0d\u540c<\/figcaption><\/figure>\n\n\n\n

\uff082\uff09\u5b58\u50a8\u533a\u522b<\/p>\n\n\n\n

\uff083\uff09\u4e0d\u540c\u7c7b\u578b\u4e4b\u95f4\u7684\u8f6c\u5316<\/p>\n\n\n\n

\u53d8\u91cf<\/h2>\n\n\n\n

\u7528\u6765\u4fdd\u5b58\u4e00\u4e9b\u7279\u5b9a\u5185\u5bb9\uff0c\u5e76\u4e14\u5728\u7a0b\u5e8f\u6267\u884c\u8fc7\u7a0b\u4e2d\u503c\u968f\u65f6\u4f1a\u53d1\u751f\u53d8\u5316\u7684\u91cf\u3002<\/p>\n\n\n\n

\u5b9a\u4e49\uff1a[\u5b58\u50a8\u7c7b\u578b] \u6570\u636e\u7c7b\u578b \u6807\u8bc6\u7b26=\u503c TYPE NAME=VALUE;<\/p>\n\n\n\n

\u6807\u8bc6\u7b26\uff1a\u7531\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5349\u7ebf\u7ec4\u6210\u4e14\u4e0d\u80fd\u4ee5\u6570\u5b57\u5f00\u5934\u7684\u4e00\u4e2a\u6807\u8bc6\u5e8f\u5217\u3002\u5199\u6807\u8bc6\u7b26\u5c3d\u91cf\u505a\u5230\u89c1\u540d\u751f\u4e49\u3002<\/p>\n\n\n\n

\u6570\u636e\u7c7b\u578b\uff1a\u57fa\u672c\u6570\u636e\u7c7b\u578b+\u6784\u9020\u7c7b\u578b<\/p>\n\n\n\n

\u5b58\u50a8\u7c7b\u578b\uff1aauto static register extern(\u8bf4\u660e\u7b26\uff09<\/p>\n\n\n\n

auto:\u9ed8\u8ba4\uff0c\u81ea\u52a8\u5206\u914d\u7a7a\u95f4\uff0c\u81ea\u52a8\u56de\u6536\u7a7a\u95f4\u3002<\/p>\n\n\n\n

register\uff1a(\u5efa\u8bae\u578b\uff09\u5bc4\u5b58\u5668\u7c7b\u578b\uff0c\u53ea\u80fd\u5b9a\u4e49\u5c40\u90e8\u53d8\u91cf\uff0c\u4e0d\u80fd\u5b9a\u4e49\u5168\u5c40\u53d8\u91cf\uff1b\u5927\u5c0f\u6709\u9650\u5236\uff0c\u53ea\u80fd\u5b9a\u4e4932\u4f4d\u5927\u5c0f\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5982double\u5c31\u4e0d\u53ef\u4ee5\uff0c\u5bc4\u5b58\u5668\u6ca1\u6709\u5730\u5740\uff0c\u6240\u4ee5\u4e00\u4e2a\u5bc4\u5b58\u5668\u7c7b\u578b\u7684\u53d8\u91cf\u65e0\u6cd5\u6253\u5370\u51fa\u5730\u5740\u67e5\u770b\u6216\u4f7f\u7528\u3002<\/p>\n\n\n\n

static: \u9759\u6001\u7c7b\u578b\u53d8\u91cf\uff0c\u81ea\u52a8\u521d\u59cb\u5316\u4e3a0\u503c\u6216\u7a7a\u503c\uff0c\u5e76\u4e14\u5176\u53d8\u91cf\u7684\u503c\u6709\u7ee7\u627f\u6027\u3002<\/p>\n\n\n\n

extern:\u8bf4\u660e\u578b\uff0c\u610f\u5473\u7740\u4e0d\u80fd\u6539\u53d8\u88ab\u8bf4\u660e\u7684\u53d8\u91cf\u7684\u503c\u6216\u7c7b\u578b\u3002<\/p>\n\n\n\n

\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u548c\u4f5c\u7528\u8303\u56f4\uff1a<\/h3>\n\n\n\n

1.\u5168\u5c40\u53d8\u91cf\u548c\u5c40\u90e8\u53d8\u91cf<\/p>\n\n\n\n

2.\u5c40\u90e8\u53d8\u91cf\u548c\u5c40\u90e8\u53d8\u91cf<\/p>\n\n\n\n

3.\u53c2\u8003\u56fe\u7247<\/p>\n\n\n\n

3.\u8fd0\u7b97\u7b26\u548c\u8868\u8fbe\u5f0f<\/h2>\n\n\n\n

\u8868\u8fbe\u5f0f\u4e0e\u8bed\u53e5\u7684\u533a\u522b<\/p>\n\n\n\n

\u8fd0\u7b97\u7b26\u90e8\u5206<\/p>\n\n\n\n

\uff081\uff09\u6bcf\u4e2a\u8fd0\u7b97\u7b26\u6240\u9700\u8981\u7684\u53c2\u4e0e\u8fd0\u7b97\u7684\u64cd\u4f5c\u6570\u4e2a\u6570<\/p>\n\n\n\n

\uff082\uff09\u7ed3\u5408\u6027<\/p>\n\n\n\n

\uff083\uff09\u4f18\u5148\u7ea7<\/p>\n\n\n\n

\uff084\uff09\u8fd0\u7b97\u7b26\u7684\u7279\u6b8a\u7528\u6cd5:\u5982%\uff0c\u8981\u6c42\u4e24\u8fb9\u64cd\u4f5c\u6570\u5fc5\u987b\u662f\u6574\u6570\u3002\u81ea\u589e\u81ea\u51cf\uff0c\u5982\u679c\u8fd0\u7b97\u7b26\u5728\u524d\uff0c\u5148\u8fdb\u884c\u8ba1\u7b97\uff0c\u518d\u53d6\u53d8\u91cf\u503c\u4f7f\u7528; \u53d8\u91cf\u5728\u524d\uff0c\u5148\u53d6\u53d8\u91cf\u503c\u4f7f\u7528\uff0c\u518d\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n\n\n\n

\uff085\uff09\u4f4d\u8fd0\u7b97\u7684\u91cd\u8981\u610f\u4e49<\/p>\n\n\n\n

https:\/\/www.processon.com\/embed\/632bd89c637689341d6d3c2f<\/a><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u4e94\u3001\u6570\u7ec4<\/h2>\n\n\n\n

\u6784\u9020\u7c7b\u578b\u4e4b\u4e00\uff0c\u8fde\u7eed\u5b58\u653e\u3002<\/p>\n\n\n\n

\u4e00\u7ef4\u6570\u7ec4\uff1a<\/p>\n\n\n\n

1.\u5b9a\u4e49\uff1a[\u5b58\u50a8\u7c7b\u578b] \u6570\u636e\u7c7b\u578b \u6807\u8bc6\u7b26[\u4e0b\u6807]<\/p>\n\n\n\n

2.\u521d\u59cb\u5316\uff1a\u53ef\u4ee5\u4e0d\u8fdb\u884c\u521d\u59cb\u5316; \u4e5f\u53ef\u4ee5\u5168\u521d\u59cb\u5316\uff0c\u5982int arr[3]={1,2,3};\u4e5f\u53ef\u4ee5\u90e8\u5206\u521d\u59cb\u5316,\u5982int arr[3]={0},\u90e8\u5206\u521d\u59cb\u5316\u5176\u540e\u9762\u672a\u521d\u59cb\u5316\u7684\u4e3a0;\u4e00\u822c\u4e3aauto\u7c7b\u578b\uff0c\u5982\u679c\u7528\u4e86static\u4fee\u9970\uff0c\u5219\u653e\u5230\u9759\u6001\u533a\uff0c\u5373\u4f7f\u6ca1\u6709\u521d\u59cb\u5316\uff0c\u4e5f\u4f1a\u88ab\u521d\u59cb\u5316\u4e3a\u51680\u300b<\/p>\n\n\n\n

3.\u5143\u7d20\u5f15\u7528\uff1a\u6570\u7ec4\u540d\u52a0\u4e0b\u6807\u3002<\/p>\n\n\n\n

4.\u6570\u7ec4\u540d\uff1aint arr[3]; \u6570\u7ec4\u540d\u662f\u8868\u793a\u5730\u5740\u7684\u5e38\u91cf\uff0c\u4e5f\u662f\u6574\u4e2a\u6570\u7ec4\u7684\u8d77\u59cb\u4f4d\u7f6e\u3002<\/p>\n\n\n\n

5.\u5730\u5740\u8d8a\u754c\uff1aint arr[3]; arr[3]=10; printf(“arr[3] is %d”,arr[3]);<\/p>\n\n\n\n

\u4e8c\u7ef4\u6570\u7ec4\uff1a<\/p>\n\n\n\n

1.\u5b9a\u4e49\uff0c\u521d\u59cb\u5316\uff1a\u3010\u5b58\u50a8\u7c7b\u578b\u3011\u6570\u636e\u7c7b\u578b \u6807\u8bc6\u7b26 \u3010\u884c\u4e0b\u6807\u3011\u3010\u5217\u4e0b\u6807\u3011<\/p>\n\n\n\n

2 \u5143\u7d20\u5f15\u7528<\/p>\n\n\n\n

3.\u5b58\u50a8\u5f62\u5f0f\uff1a<\/p>\n\n\n\n

4.\u6df1\u5165\u7406\u89e3\u4e8c\u7ef4\u6570\u7ec4<\/p>\n\n\n\n

\u7ed3\u6784\u4f53<\/h2>\n\n\n\n

1.\u4ea7\u751f\u53ca\u5176\u610f\u4e49\uff1a<\/p>\n\n\n\n

2.\u7c7b\u578b\u63cf\u8ff0<\/p>\n\n\n\n

3.\u5d4c\u5957\u5b9a\u4e49<\/p>\n\n\n\n

4.\u5b9a\u4e49\u53d8\u91cf\uff08\u53d8\u91cf\u3001\u6570\u7ec4\u3001\u6307\u9488\uff09\uff0c\u521d\u59cb\u5316\u53ca\u6210\u5458\u5f15\u7528 <\/p>\n\n\n\n

5.\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u5927\u5c0f<\/p>\n\n\n\n

\u5927\u7eb2<\/h1>\n\n\n\n

I\/O:APUE\u7b2c3\u30015\u300114\u7ae0<\/p>\n\n\n\n

\u6587\u4ef6\u7cfb\u7edf \uff1a4\u30016\u30017\u7ae0<\/p>\n\n\n\n

\u5e76\u53d1\uff1a\u4fe1\u53f7 10\u7ae0\u3001\u591a\u7ebf\u7a0b10\u300111\u7ae0<\/p>\n\n\n\n

IPC\u8fdb\u7a0b\u95f4\u901a\u4fe1\uff1a8\u7ae0\u8fdb\u7a0b\u57fa\u7840\uff08\u6d89\u53ca\u5230\u591a\u8fdb\u7a0b\uff09\u300113\u7ae0\u5b88\u62a4\u8fdb\u7a0b\uff0c15\uff0c16\u7ae0+<\/p>\n\n\n\n

\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n\n\n\n

1.\u5f03\u7528root\u7528\u6237<\/p>\n\n\n\n

2.\u91cd\u6784\u539f\u6765\u7684\u7a0b\u5e8f<\/p>\n\n\n\n

3.\u8bfe\u7a0b\u91cd\u70b9\uff1a\u9879\u76ee\uff0c\u8bfe\u5802\u4ee3\u7801\uff0c\u9762\u8bd5\u9898\uff0c\u5b9e\u9a8c\u6027\u9898\u76ee\uff0c\u63a8\u8350\u4e66\u7c4d\u7684\u8bfe\u540e\u9898<\/p>\n\n\n\n

I\/O\uff1ainput & output<\/h1>\n\n\n\n

I\/O\u662f\u4e00\u5207\u5b9e\u73b0\u7684\u57fa\u7840\u3002<\/p>\n\n\n\n

\u5206\u6210\u7cfb\u7edf\u8c03\u7528IO\uff08sysio\uff09(\u53c8\u79f0\u4e3a\u6587\u4ef6IO)\u3001\u6807\u51c6IO(stdio)\u4e24\u79cd\u3002<\/p>\n\n\n\n

\u5982\u679c\u4e24\u79cd\u90fd\u53ef\u4ee5\u4f7f\u7528\uff0c\u4f18\u5148\u4f7f\u7528\u6807\u51c6IO\u3002\u6807\u51c6IO\u53ef\u79fb\u690d\u6027\u597d\uff0c\u5408\u5e76\u7cfb\u7edf\u8c03\u7528\uff08buffer,cache\uff0c\u7edd\u5927\u65f6\u5019\u597d\u7528\uff09\u3002stdio\u4f9d\u8d56sysio\u5b9e\u73b0\u3002<\/p>\n\n\n\n

fopen\u5728Linux\u4e0b\u4f9d\u8d56open\u51fd\u6570\uff0c\u5728unix\u4e0b\u4f9d\u8d56openfile\u51fd\u6570\u3002<\/p>\n\n\n\n

stdio:<\/h2>\n\n\n\n

fopen();<\/p>\n\n\n\n

fclose();<\/p>\n\n\n\n

fgetc();<\/p>\n\n\n\n

fputc();<\/p>\n\n\n\n

fgets();<\/p>\n\n\n\n

fputs();<\/p>\n\n\n\n

fread();<\/p>\n\n\n\n

fwrite();<\/p>\n\n\n\n

printf();<\/p>\n\n\n\n

fseek,ftell:\u8fd4\u56de\u503clong,\u6700\u59272\u4e2aG\u7684\u6587\u4ef6\u3002\u521b\u5efa\u7a7a\u6d1e\u6587\u4ef6\u3002<\/p>\n\n\n\n

fseeko,\u8fd4\u56de\u503c\u4e3aoffset_t.<\/p>\n\n\n\n

fflush():<\/p>\n\n\n\n

\u7f13\u51b2\u533a\u7684\u4f5c\u7528\uff1a\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u662f\u597d\u4e8b\uff0c\u5408\u5e76\u7cfb\u7edf\u8c03\u7528 \u3002<\/p>\n\n\n\n

\u884c\u7f13\u51b2\uff1a\u6362\u884c\u7684\u65f6\u5019\u5237\u65b0; \u6ee1\u4e86\u7684\u65f6\u5019\u5237\u65b0\uff1b\u5f3a\u8c03\u5237\u65b0\uff08\u6807\u51c6\u8f93\u51fa\u662f\u8fd9\u6837\u7684\uff0c\u56e0\u4e3a\u662f\u7ec8\u7aef\u8bbe\u5907\uff09\u3002<\/p>\n\n\n\n

\u5168\u7f13\u51b2\uff1a\u6ee1\u4e86\u7684\u65f6\u5019\u5237\u65b0\uff0c\u5f3a\u5236\u5237\u65b0\uff08\u9ed8\u8ba4\uff0c\u53ea\u8981\u4e0d\u662f\u7ec8\u7aef\u8bbe\u5907\uff09\u3002<\/p>\n\n\n\n

\u65e0\u7f13\u51b2\uff1a\u5982stderr\uff0c\u9700\u8981\u7acb\u5373\u8f93\u51fa\u7684\u5185\u5bb9\u3002<\/p>\n\n\n\n

\u53ef\u4ee5\u901a\u8fc7setvbuf\u4fee\u6539\u3002\u5c3d\u91cf\u4e0d\u8981\u7528\u3002<\/p>\n\n\n\n

getline(): \u539f\u6765\u7684\u51fd\u6570\u4e0d\u80fd\u5b8c\u6574\u53d6\u5f97\u4e00\u884c\u3002<\/p>\n\n\n\n

\u4e34\u65f6\u6587\u4ef6\uff1a1.\u5982\u4f55\u4e0d\u51b2\u7a812.\u53ca\u65f6\u9500\u6bc1\uff1atmpnam tmpfile\u51fd\u6570\u3002<\/p>\n\n\n\n

\u6587\u4ef6IO\/\u7cfb\u7edf\u8c03\u7528IO\uff1a<\/h2>\n\n\n\n

\u6587\u4ef6\u63cf\u8ff0\u7b26fd\u662f\u5728\u6587\u4ef6IO\u4e2d\u8d2f\u7a7f\u59cb\u7ec8\u7684\u7c7b\u578b\u3002<\/p>\n\n\n\n

\u4ec0\u4e48\u662f\u6587\u4ef6\u63cf\u8ff0\u7b26\uff1a\u6570\u7ec4\u4e0b\u6807\u6574\u5f62\u6570\uff0c\u6570\u7ec4\u4e2d\u5b58\u653e\u6253\u5f00\u6587\u4ef6\u7684\u7ed3\u6784\u4f53\u7684\u9996\u5730\u5740\u3002\u6587\u4ef6\u63cf\u8ff0\u7b26\u4f18\u5148\u4f7f\u7528\u5f53\u524d\u53ef\u7528\u8303\u56f4\u5185\u6700\u5c0f\u7684\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u6587\u4ef6IO\u64cd\u4f5c\uff1aopen,close,read,write,lseek<\/p>\n\n\n\n

\u6587\u4ef6IO\u4e0e\u6807\u51c6IO\u8fdb\u884c\u533a\u522b\uff1a\u4e3e\u4f8b\uff1a\u4f20\u8fbe\u5ba4\u8001\u5927\u7237\u8dd1\u90ae\u5c40\u3002\u533a\u522b\uff1a\u54cd\u5e94\u901f\u5ea6&\u541e\u5410\u91cf\u3002\u9762\u8bd5\uff1a\u5982\u4f55\u4f7f\u4e00\u4e2a\u7a0b\u5e8f\u53d8\u5feb\uff1f<\/p>\n\n\n\n

IO\u7684\u6548\u7387\u95ee\u9898\uff1a<\/p>\n\n\n\n

\u63d0\u9192\uff1a\u6807\u51c6IO\u4e0e\u6587\u4ef6IO\u4e0d\u80fd\u6df7\u7528\u3002<\/p>\n\n\n\n

fileno():\u5c06FILE\u7c7b\u578b\u8f6c\u6362\u4e3afd\u7c7b\u578b\u3002<\/p>\n\n\n\n

fdopen():\u5c06fd\u8f6c\u6362\u4e3aFILE<\/p>\n\n\n\n

\u6587\u4ef6\u5171\u4eab\u95ee\u9898<\/p>\n\n\n\n

\u539f\u5b50\u64cd\u4f5c\uff1a<\/h3>\n\n\n\n

\u539f\u5b50\uff1a\u4e0d\u53ef\u5206\u5272\u7684\u6700\u5c0f\u5355\u4f4d\u3002\u539f\u5b50\u64cd\u4f5c\u7684\u4f5c\u7528\uff1a\u89e3\u51b3\u7ade\u4e89\u548c\u51b2\u7a81\u3002<\/p>\n\n\n\n

\u7a0b\u5e8f\u4e2d\u7684\u91cd\u5b9a\u5411\uff1adup,dup2<\/p>\n\n\n\n

\u540c\u6b65\uff1async,fsync,fdatasync<\/p>\n\n\n\n

fcntl();<\/p>\n\n\n\n

ioctl();<\/p>\n\n\n\n

\/dev\/fd\/\u76ee\u5f55\uff1a\u865a\u76ee\u5f55\u3002\u5f53\u524d\u8fdb\u7a0b\u6240\u7528\u5230\u7684\u6587\u4ef6\u7b26\u4fe1\u606f\u3002<\/p>\n\n\n\n

\u6587\u4ef6\u7cfb\u7edf<\/h1>\n\n\n\n

\u4e00.\u76ee\u5f55\u548c\u6587\u4ef61.\u83b7\u53d6\u6587\u4ef6\u5c5e\u6027\uff1astat,fstat,lstat2.\u6587\u4ef6\u8bbf\u95ee\u6743\u9650\uff1ast_mode\u662f\u4e00\u4e2a16\u4f4d\u7684\u4f4d\u56fe\uff0c\u7528\u4e8e\u8868\u793a\u6587\u4ef6\u7c7b\u578b\uff0c\u6587\u4ef6\u8bbf\u95ee\u6743\u9650\u53ca\u7279\u6b8a\u6743\u9650\u4f4d\u30023.umask:\u9632\u6b62\u4ea7\u751f\u6743\u9650\u8fc7\u677e\u7684\u6587\u4ef6\u30024.\u6587\u4ef6\u6743\u9650\u7684\u66f4\u66f4\u6539\/\u7ba1\u7406\uff1achmod,fchmod5.\u7c98\u4f4f\u4f4d\uff1at\u4f4d\uff0c\u539f\u6765\u662f\u7ed9\u4e8c\u8fdb\u5236\u53ef\u6267\u884c\u6587\u4ef6\u4f7f\u7528\uff0c\u8ba9\u5176\u5e38\u9a7b\u5185\u5b58\u3002\u73b0\u5728\u7528\u4e8e\u76ee\u5f55\uff0c\u5404\u4e2a\u7528\u6237\u5bf9\u4e8e\u76ee\u5f55\u7684\u64cd\u4f5c\u63a7\u5236\u30026.\u6587\u4ef6\u7cfb\u7edf\uff1aFAT\uff0cUFS\u3002\u6587\u4ef6\u7cfb\u7edf\uff1a\u6587\u4ef6\u6216\u6570\u636e\u7684\u5b58\u50a8\u683c\u5f0f\u95ee\u9898\u3002FAT16\/32\uff1a\u9759\u6001\u5b58\u50a8\u7684\u5355\u94fe\u8868\u3002<\/p><\/p>\n\n\n\n

7.\u786c\u94fe\u63a5\uff0c\u7b26\u53f7\u94fe\u63a5<\/p>\n\n\n\n

\u4e8c.\u7cfb\u7edf\u6570\u636e\u6587\u4ef6\u548c\u4fe1\u606f<\/p>\n\n\n\n

\u4e09.\u8fdb\u7a0b\u73af\u5883:<\/p>\n\n\n\n

\u5e76\u53d1<\/h1>\n\n\n\n

\u540c\u6b65\u4e8b\u4ef6\u3001\u5f02\u6b65\u4e8b\u4ef6\uff1a<\/p>\n\n\n\n

\u5f02\u6b65\u4e8b\u4ef6\u7684\u5904\u7406\uff1a\u67e5\u8be2\u6cd5\uff0c\u901a\u77e5\u6cd5\uff08\u6c5f\u8fb9\u6284\u9c7c\u3001\u9c7c\u6c60\u8d77\u9c7c\uff09\uff0c\u7528\u4ec0\u4e48\u65b9\u6cd5\u6bd4\u8f83\u5408\u9002<\/p>\n\n\n\n

\u4e00.\u4fe1\u53f7<\/p>\n\n\n\n

1.\u4fe1\u53f7\u7684\u6982\u5ff5\uff1a\u4fe1\u53f7\u662f\u8f6f\u4ef6\u4e2d\u65ad\uff0c\u4fe1\u53f7\u7684\u54cd\u5e94\u4f9d\u8d56\u4e8e\u4e2d\u65ad\u3002<\/p>\n\n\n\n

2.signal();<\/p>\n\n\n\n

3.\u4fe1\u53f7\u7684\u4e0d\u53ef\u9760<\/p>\n\n\n\n

4.\u53ef\u91cd\u5165\u51fd\u6570<\/p>\n\n\n\n

5.\u4fe1\u53f7\u7684\u54cd\u5e94\u8fc7\u7a0b<\/p>\n\n\n\n

6.\u4fe1\u53f7\u5e38\u7528\u51fd\u6570<\/p>\n\n\n\n

kill();<\/p>\n\n\n\n

raise();<\/p>\n\n\n\n

alarm();<\/p>\n\n\n\n

pause();<\/p>\n\n\n\n

abort();<\/p>\n\n\n\n

system();<\/p>\n\n\n\n

sleep();<\/p>\n\n\n\n

 <\/p>\n\n\n\n

7.\u4fe1\u53f7\u96c6\uff1a<\/p>\n\n\n\n

8.\u4fe1\u53f7\u5c4f\u853d\u5b57\u548c pending \u96c6<\/p>\n\n\n\n

9.\u6269\u5c55\uff1a<\/p>\n\n\n\n

sigsuspend();<\/p>\n\n\n\n

sigaction();<\/p>\n\n\n\n

setitimer();<\/p>\n\n\n\n

10.\u5b9e\u65f6\u4fe1\u53f7\u76f8\u5173\u5185\u5bb9<\/p>\n\n\n\n

\u4e8c.\u7ebf\u7a0b<\/h2>\n\n\n\n

1.\u4ec0\u4e48\u662f\u7ebf\u7a0b\uff1a\u4e00\u4e2a\u6b63\u5728\u8fd0\u884c\u7684\u51fd\u6570\u3002<\/p>\n\n\n\n

posix\u7ebf\u7a0b\u662f\u4e00\u5957\u6807\u51c6\uff0c\u800c\u4e0d\u662f\u5b9e\u73b0\u3002<\/p>\n\n\n\n

openmb\u6807\u51c6\uff1a<\/p>\n\n\n\n

\u7ebf\u7a0b\u7c7b\u578b\uff1apthread_t posix\u6807\u51c6\u4e0b\u7684\u7ebf\u7a0b\u7c7b\u578b\uff0c\u5177\u4f53\u662f\u4ec0\u4e48\u7c7b\u578b\u4e0d\u592a\u6e05\u695a\u3002\u5728linux\u4e0b\u662f\u6574\u5f62\u6570\u3002<\/p>\n\n\n\n

\u8fdb\u7a0b\u662f\u7a97\u5668\uff0c\u7528\u6765\u627f\u8f7d\u7ebf\u7a0b\u3002<\/p>\n\n\n\n

pthread_equal():\u7528\u6765\u6bd4\u8f83\u4e24\u4e2a\u7ebf\u7a0bID\u3002<\/p>\n\n\n\n

2.\u7ebf\u7a0b\u7684\u521b\u5efa\u3001\u7ec8\u6b62\u3001\u7ebf\u7a0b\u53d6\u6d88\u3001\u6808\u6e05\u7406<\/p>\n\n\n\n

3.\u7ebf\u7a0b\u540c\u6b65\uff1a\u4e92\u65a5\u91cf\u3001\u6761\u4ef6\u53d8\u91cf\u3001\u8bfb\u5199\u9501<\/p>\n\n\n\n

4.\u7ebf\u7a0b\u76f8\u5173\u7684\u5c5e\u6027\u3001\u7ebf\u7a0b\u540c\u6b65\u7684\u5c5e\u6027<\/p>\n\n\n\n

5.\u53ef\u91cd\u5165\u3001\u7ebf\u7a0b\u4e0e\u4fe1\u53f7\u3001\u7ebf\u7a0b\u4e0efork<\/p>\n\n\n\n

\u9ad8\u7ea7IO<\/h2>\n\n\n\n

\u975e\u963b\u585eIO–\u963b\u585eIO<\/p>\n\n\n\n

\u8865\u5145 \uff1a\u6709\u9650\u72b6\u6001\u673a\u7f16\u7a0b<\/p>\n\n\n\n

1.\u975e\u963b\u585eIO<\/p>\n\n\n\n

2.IO\u591a\u8def\u8f6c\u63a5<\/p>\n\n\n\n

3.\u5176\u4ed6\u8bfb\u5199\u51fd\u6570<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u8bed\u8a00\u53d1\u5c55\u53f2\uff1a 1960\u5e74\uff0c\u539f\u578bA\u8bed\u8a00->ALGOL\u8bed\u8a00 1963\u5e74\uff0c\u5251\u6865\u5927\u5b66CPL\u8bed\u8a00 1967\u5e74\uff0c\u5251 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-677","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/677"}],"collection":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=677"}],"version-history":[{"count":69,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/677\/revisions"}],"predecessor-version":[{"id":907,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/677\/revisions\/907"}],"wp:attachment":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=677"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=677"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=677"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}