![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260211070543-698c2a47bd938.png\")
<\/p>\n\u76ee\u5f55<\/p>\n
1 \u533f\u540d\u7ba1\u9053<\/p>\n
1.1 \u521b\u5efa\u533f\u540d\u7ba1\u9053<\/p>\n
1.1.1 pipe<\/p>\n
1.2 \u533f\u540d\u7ba1\u9053\u7684\u4f7f\u7528<\/p>\n
1.3\u00a0\u5185\u6838\u5b9e\u73b0\u539f\u7406<\/p>\n
1.3.1 \u5185\u6838\u6570\u636e\u7ed3\u6784<\/p>\n
1.3.2 \u6570\u636e\u6d41\u52a8\u8fc7\u7a0b<\/p>\n
1.3.3 \u963b\u585e\u4e0e\u975e\u963b\u585e<\/p>\n
1.4\u00a0\u7ba1\u9053\u7684\u4e94\u5927\u7279\u6027\u548c\u56db\u79cd\u60c5\u51b5<\/p>\n
2 \u547d\u540d\u7ba1\u9053<\/p>\n
2.1 \u521b\u5efa\u547d\u540d\u7ba1\u9053<\/p>\n
2.1.1 mkfifo<\/p>\n
2.2 \u547d\u540d\u7ba1\u9053\u7684\u4f7f\u7528<\/p>\n
2.3 \u547d\u540d\u7ba1\u9053\u7684\u539f\u7406<\/p>\n
2.4 \u5220\u9664\u547d\u540d\u7ba1\u9053<\/p>\n
2.4.1 unlink<\/p>\n
\u7ba1\u9053\u662f\u4e00\u4e2a\u975e\u5e38\u53e4\u8001\u7684\u8fdb\u7a0b\u901a\u4fe1\u7684\u65b9\u5f0f\u3002\u7ba1\u9053\u5141\u8bb8\u4e24\u4e2a\u76f8\u5173\u8fdb\u7a0b（\u901a\u5e38\u662f\u7236\u5b50\u8fdb\u7a0b）\u901a\u8fc7\u4e00\u4e2a\u5355\u5411\u6216\u53cc\u5411\u7684\u6570\u636e\u901a\u9053\u4ea4\u6362\u6570\u636e<\/p>\n
\u7ba1\u9053\u662f\u4e00\u4e2a\u57fa\u4e8e\u6587\u4ef6\u7cfb\u7edf\u7684\u4e00\u4e2a\u5185\u5b58\u7ea7\u7684\u5355\u5411\u901a\u4fe1\u7684\u6587\u4ef6，\u4e3b\u8981\u7528\u6765\u8fdb\u884c\u8fdb\u7a0b\u901a\u4fe1（IPC）<\/p>\n
（1）\u7ba1\u9053\u4f7f\u7528\u6837\u4f8b<\/p>\n
lz@VM-8-15-ubuntu:~\/learn$ ls -l | grep pipe <\/p>\n
<\/p>\n
\u533f\u540d\u7ba1\u9053（Anonymous Pipe）\u662f Linux \u4e2d\u4e00\u79cd\u7ecf\u5178\u7684\u00a0\u8fdb\u7a0b\u95f4\u901a\u4fe1（IPC）\u00a0\u673a\u5236，\u4e3b\u8981\u7528\u4e8e\u00a0\u7236\u5b50\u8fdb\u7a0b\u00a0\u6216\u00a0\u5144\u5f1f\u8fdb\u7a0b\u00a0\u4e4b\u95f4\u7684\u5355\u5411\u6570\u636e\u901a\u4fe1\u3002\u5176\u6838\u5fc3\u7279\u70b9\u662f\u00a0\u5185\u5b58\u7ea7\u9ad8\u6548\u4f20\u8f93\u3001\u5185\u6838\u7f13\u51b2\u533a\u7ba1\u7406\u00a0\u548c\u00a0\u534a\u53cc\u5de5\u901a\u4fe1<\/p>\n
（1）\u529f\u80fd<\/p>\n
\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u00a0\u533f\u540d\u7ba1\u9053（Anonymous Pipe），\u5b9e\u73b0\u7236\u5b50\u8fdb\u7a0b\u95f4\u7684\u5355\u5411\u901a\u4fe1<\/p>\n
（2）\u51fd\u6570\u539f\u578b<\/p>\n
#include <unistd.h>
\nint pipe(int pipefd[2]); <\/p>\n
（3）\u53c2\u6570<\/p>\n
（4）\u8fd4\u56de\u503c<\/p>\n
\u6210\u529f\u8fd4\u56de\u00a00，\u5931\u8d25\u8fd4\u56de\u00a0-1\u00a0\u5e76\u8bbe\u7f6e\u00a0errno\u3002<\/p>\n
（1）\u7236\u8fdb\u7a0b\u8bfb\u6570\u636e，\u5b50\u8fdb\u7a0b\u5199\u6570\u636e<\/p>\n
#include <cstdio>
\n#include <iostream>
\n#include <string>
\n#include <unistd.h>
\n#include <sys\/types.h>
\n#include <sys\/wait.h>
\nint main()
\n{
\n \/\/ \u521b\u5efa\u7ba1\u9053
\n int pipefd[2];
\n int n=pipe(pipefd);
\n \/\/ \u521b\u5efa\u5b50\u8fdb\u7a0b
\n pid_t pid = fork();
\n \/\/ \u901a\u4fe1
\n if(pid == -1)
\n {
\n perror("fork");
\n return 1;
\n }
\n else if(pid == 0)
\n {
\n \/\/ \u5173\u95ed\u8bfb\u7aef
\n close(pipefd[0]);
\n \/\/ \u5b50\u8fdb\u7a0b
\n int cnt=1;
\n while(1)
\n {
\n \/\/ \u5199\u5165\u6570\u636e
\n std::string msg="my child process, pid = ";
\n msg+=std::to_string(pid);
\n msg += ", content = ";
\n msg+=std::to_string(cnt);
\n cnt++;<\/p>\n
\/\/ \u5199\u5165\u7ba1\u9053
\n int n = write(pipefd[1],msg.c_str(),msg.size());
\n sleep(1);
\n }
\n }
\n else
\n {
\n \/\/ \u5173\u95ed\u5199\u7aef
\n close(pipefd[1]);
\n \/\/ \u7236\u8fdb\u7a0b
\n char buff[1024]={0};
\n while(1)
\n {
\n \/\/ \u8bfb\u53d6\u6570\u636e
\n int n=read(pipefd[0],buff,sizeof(buff)-1);
\n buff[n]='\\\\0';
\n std::cout<<buff<<std::endl;
\n sleep(1);
\n }
\n }
\n \/\/ \u7b49\u5f85\u5b50\u8fdb\u7a0b
\n pid_t status=waitpid(pid,NULL,0);
\n return 0;
\n} <\/p>\n
\u6ce8\u610f\u4e8b\u9879：<\/p>\n
（1）\u5fc5\u987b\u5173\u95ed\u672a\u4f7f\u7528\u7684\u7aef：<\/p>\n
（2）\u521b\u5efa\u7ba1\u9053\u9700\u8981\u5728\u521b\u5efa\u5b50\u8fdb\u7a0b\u524d，\u624d\u80fd\u4fdd\u8bc1\u5b50\u8fdb\u7a0b\u4e0e\u7236\u8fdb\u7a0b\u901a\u4fe1\u7684\u662f\u540c\u4e00\u4e2a\u7ba1\u9053<\/p>\n
（3）\u7ba1\u9053\u662f\u5b57\u8282\u6d41，\u65e0\u6d88\u606f\u8fb9\u754c<\/span><\/span><\/p>\n \u7ba1\u9053\u5728\u5185\u6838\u4e2d\u7531\u00a0pipe_inode_info\u00a0\u7ba1\u7406<\/p>\n struct pipe_inode_info { （1）\u5199\u5165\u6570\u636e（write(fd[1], buf, size)）：<\/p>\n （2）\u8bfb\u53d6\u6570\u636e（read(fd[0], buf, size)）：<\/p>\n （1）\u963b\u585e\u6a21\u5f0f（\u9ed8\u8ba4）：<\/p>\n （2）\u975e\u963b\u585e\u6a21\u5f0f<\/p>\n fcntl(pipefd[0], F_SETFL, O_NONBLOCK); \/\/ \u8bfb\u7aef\u975e\u963b\u585e （1）\u4e94\u5927\u7279\u6027<\/p>\n （2）\u56db\u79cd\u60c5\u51b5<\/p>\n \u547d\u540d\u7ba1\u9053（Named Pipe，\u4e5f\u79f0\u4e3a\u00a0<\/span><\/span> \u5b83\u7c7b\u4f3c\u4e8e\u533f\u540d\u7ba1\u9053（<\/span><\/span> FIFO（\u547d\u540d\u7ba1\u9053）\u4e0epipe（\u533f\u540d\u7ba1\u9053）\u4e4b\u95f4\u552f\u2f00\u7684\u533a\u522b\u5728\u5b83\u4eec\u521b\u5efa\u4e0e\u6253\u5f00\u7684\u2f45\u5f0f\u4e0d\u540c，\u2f00\u4f46\u8fd9\u4e9b\u2f2f\u4f5c\u5b8c\u6210\u4e4b\u540e，<\/span> （1）\u547d\u4ee4\u884c\u521b\u5efa<\/p>\n \/\/ \u4f7f\u7528 mkfifo \u547d\u4ee4\u521b\u5efa FIFO \u6587\u4ef6 （1）\u529f\u80fd<\/p>\n mkfifo\u00a0\u7528\u4e8e\u521b\u5efa\u4e00\u4e2a\u00a0FIFO（\u547d\u540d\u7ba1\u9053），\u5b83\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6587\u4ef6\u7c7b\u578b，\u5141\u8bb8\u4e0d\u540c\u8fdb\u7a0b\u901a\u8fc7\u6587\u4ef6\u7cfb\u7edf\u8fdb\u884c\u901a\u4fe1\u3002FIFO \u9075\u5faa\u5148\u8fdb\u5148\u51fa（First In First Out）\u539f\u5219\u3002<\/p>\n （2）\u51fd\u6570\u539f\u578b<\/p>\n #include <sys\/types.h> int mkfifo(const char *pathname, mode_t mode); <\/p>\n （3）\u53c2\u6570<\/p>\n （4）\u8fd4\u56de\u503c<\/p>\n \u547d\u540d\u7ba1\u9053\u7684\u4f7f\u7528\u672c\u8d28\u5c31\u662f\u5bf9\u4e00\u4e2a\u6253\u5f00\u7684\u6587\u4ef6\u8fdb\u884c\u64cd\u4f5c<\/p>\n \u793a\u4f8b\u4e00：\u2f64\u547d\u540d\u7ba1\u9053\u5b9e\u73b0 server（\u670d\u52a1\u7aef） & client（\u5ba2\u6237\u7aef） \u901a\u4fe1<\/p>\n \u6709\u540d\u7ba1\u9053\u7684\u5b66\u4e60\u4ee3\u7801，\u4f7f\u7528\u6709\u540d\u7ba1\u9053\u7b80\u5355\u7684\u5b9e\u73b0\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u7684\u8fdb\u7a0b\u901a\u4fe1 \u00b7 d2c9787 \u00b7 lv-zhuo\/AsCent – Gitee.com<\/p>\n （1）FIFO\u00a0\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u00a0\u6587\u4ef6\u7c7b\u578b，\u4f46\u00a0\u4e0d\u5b58\u50a8\u5b9e\u9645\u6570\u636e，\u4ec5\u4f5c\u4e3a\u6570\u636e\u901a\u9053\u3002<\/p>\n （2）\u5199\u5165\u7aef (><\/span>) \u548c\u8bfb\u53d6\u7aef (<<\/span>)\u00a0\u5fc5\u987b\u540c\u65f6\u5b58\u5728，\u5426\u5219：<\/p>\n （1）\u547d\u4ee4\u884c\u5220\u9664<\/p>\n FIFO \u6587\u4ef6\u53ea\u662f\u666e\u901a\u6587\u4ef6，\u53ef\u4ee5\u7528\u00a0rm\u00a0\u5220\u9664<\/p>\n rm mkpipe <\/p>\n （1）\u529f\u80fd<\/p>\n mkfifo\u00a0\u7528\u4e8e\u5728\u5f53\u524d\u76ee\u5f55\u4e0b\u5220\u9664\u4e00\u4e2a\u6307\u5b9a\u540d\u5b57\u7684\u6587\u4ef6<\/p>\n （2）\u51fd\u6570\u539f\u578b<\/p>\n #include <fcntl.h> int unlink(const char *pathname); <\/p>\n （3）\u53c2\u6570<\/p>\n （4）\u8fd4\u56de\u503c<\/p>\n \u76ee\u5f551.3\u00a0\u5185\u6838\u5b9e\u73b0\u539f\u7406<\/h3>\n
1.3.1 \u5185\u6838\u6570\u636e\u7ed3\u6784<\/h4>\n
\n struct page *pages[PIPE_DEF_BUFFERS]; \/\/ \u73af\u5f62\u7f13\u51b2\u533a（\u9ed8\u8ba416\u9875）
\n unsigned int head; \/\/ \u5199\u6307\u9488
\n unsigned int tail; \/\/ \u8bfb\u6307\u9488
\n unsigned int readers; \/\/ \u8bfb\u7aef\u5f15\u7528\u8ba1\u6570
\n unsigned int writers; \/\/ \u5199\u7aef\u5f15\u7528\u8ba1\u6570
\n wait_queue_head_t wait; \/\/ \u963b\u585e\u7b49\u5f85\u961f\u5217
\n \/\/ …
\n}; <\/p>\n1.3.2 \u6570\u636e\u6d41\u52a8\u8fc7\u7a0b<\/h4>\n
\n
\n
1.3.3 \u963b\u585e\u4e0e\u975e\u963b\u585e<\/h4>\n
\n
\nfcntl(pipefd[1], F_SETFL, O_NONBLOCK); \/\/ \u5199\u7aef\u975e\u963b\u585e <\/p>\n\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260211070543-698c2a47d319f.png\")
<\/p>\n1.4\u00a0\u7ba1\u9053\u7684\u4e94\u5927\u7279\u6027\u548c\u56db\u79cd\u60c5\u51b5<\/h3>\n
\n
\n
2 \u547d\u540d\u7ba1\u9053<\/h2>\n
\n
\n FIFO<\/span><\/span>
\n ，\u5373\u00a0<\/span><\/span>
\n First In First Out<\/span><\/span>
\n ）\u662f Linux \u4e2d\u4e00\u79cd\u8fdb\u7a0b\u95f4\u901a\u4fe1（IPC, Inter-Process Communication）\u7684\u65b9\u5f0f\u3002<\/span><\/span><\/p>\n
\n |<\/span><\/span>
\n ）<\/span><\/span><\/p>\n\n
\n \u5b83\u4eec\u5177\u6709\u76f8\u540c\u7684\u8bed\u4e49\u3002\u547d\u540d\u7ba1\u9053\u4e3b\u8981\u89e3\u51b3\u6beb\u65e0\u5173\u7cfb\u7684\u8fdb\u7a0b\u4e4b\u95f4，\u8fdb\u884c\u6587\u4ef6\u7ea7\u8fdb\u7a0b\u901a\u4fe1<\/span><\/p>\n2.1 \u521b\u5efa\u547d\u540d\u7ba1\u9053<\/h3>\n
\nmkfifo mypipe
\n\/\/ \u4f7f\u7528 mkfifo \u547d\u4ee4\u521b\u5efa FIFO \u6587\u4ef6，\u6307\u5b9a\u6743\u9650（\u5982 660）
\nmkfifo -m 660 mypipe <\/p>\n2.1.1 mkfifo<\/h4>\n
\n#include <sys\/stat.h><\/p>\n\n
\n
2.2 \u547d\u540d\u7ba1\u9053\u7684\u4f7f\u7528<\/h3>\n
2.3 \u547d\u540d\u7ba1\u9053\u7684\u539f\u7406<\/h3>\n
\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260211070545-698c2a491e617.png\")
<\/p>\n2.4 \u5220\u9664\u547d\u540d\u7ba1\u9053<\/h3>\n
2.4.1 unlink<\/h4>\n
\n#include <unistd.h><\/p>\n\n
\n
\n1 \u533f\u540d\u7ba1\u9053
\n1.1 \u521b\u5efa\u533f\u540d\u7ba1\u9053
\n1.1.1 pipe
\n1.2 \u533f\u540d\u7ba1\u9053\u7684\u4f7f\u7528
\n1.3\u00a0\u5185\u6838\u5b9e\u73b0\u539f\u7406
\n1.3.1 \u5185\u6838\u6570\u636e\u7ed3\u6784
\n1.3.2 \u6570\u636e\u6d41\u52a8\u8fc7\u7a0b
\n1.3.3 \u963b\u585e\u4e0e\u975e\u963b\u585e
\n1.4\u00a0\u7ba1\u9053\u7684\u4e94\u5927\u7279\u6027\u548c\u56db\u79cd\u60c5\u51b5
\n2 \u547d\u540d\u7ba1\u9053
\n2.1 \u521b\u5efa\u547d\u540d\u7ba1\u9053
\n2.1.1 mkfifo
\n2.2 \u547d\u540d\u7ba1\u9053\u7684\u4f7f\u7528
\n2.3 \u547d\u540d\u7ba1\u9053\u7684\u539f\u7406
\n2.4 \u5220\u9664\u547d\u540d\u7ba1\u9053
\n2.4.1 unlink \u7ba1\u9053\u662f\u4e00\u4e2a\u975e\u5e38\u53e4\u8001\u7684\u8fdb\u7a0b\u901a\u4fe1\u7684\u65b9\u5f0f\u3002\u7ba1\u9053\u5141\u8bb8\u4e24\u4e2a\u76f8\u5173\u8fdb\u7a0b࿰<\/p>\n","protected":false},"author":2,"featured_media":75130,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,44],"topic":[],"class_list":["post-75133","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-43","tag-44"],"yoast_head":"\n