HanLongXia的博客

动图：往共享内存写东西：#include <stdio.h>#include <sys/ipc.h>#include <sys/msg.h>#include <sys/types.h>#include <string.h>#include <sys/types.h>#include <sys/wait.h>#include <sys/shm.h>#include <unistd.h&g

动图：msgrcv(msgid, &rcvmsg, sizeof(rcvmsg) - sizeof(long), 9, 0);只有这一条不同1.c#include <stdio.h>#include <sys/ipc.h>#include <sys/msg.h>#include <sys/types.h>#include <string.h>#include <sys/types.h>#include <

动图：代码#include <stdio.h>#include <sys/ipc.h>#include <sys/msg.h>#include <sys/types.h>#include <string.h>#include <sys/types.h>#include <sys/wait.h>#include <stdlib.h>typedef struct _msg{ int

#include <stdio.h>#include <sys/ipc.h>#include <sys/msg.h>#include <sys/types.h>#include <string.h>#include <sys/types.h>#include <sys/wait.h>typedef struct _msg//消息队列的消息的格式{ long mtype; char buf[

消息队列1–消息队列2：–不同之处是，发送的id，与接收的消息类型不一样，这样才能在消息队列中针对性的给这个消息类型，发送信息#include <stdio.h>#include <sys/ipc.h>#include <sys/msg.h>#include <sys/types.h>#include <string.h>#include <sys/types.h>#include <sys/wait.h>

动图：mkfifio.c#include <stdio.h>#include <unistd.h>#include <fcntl.h>#include <string.h>#include <stdlib.h>#include <sys/types.h>#include <sys/stat.h> int main(){ int ref = mkfifo("./fifo_cmd_1", 0

动图：先写操作：#include <stdio.h>#include <sys/ipc.h>#include <sys/msg.h>#include <sys/types.h>#include <string.h>#include <sys/types.h>#include <sys/wait.h>#include <sys/shm.h>#include <unistd.h>#

#include <stdio.h>#include <unistd.h>#include <fcntl.h>#include <string.h>#include <stdlib.h>#include <sys/types.h>#include <sys/stat.h> void myatexit(void){ puts("----不再执行管道写------");}int main(.

#include <stdio.h>#include <unistd.h>#include <fcntl.h>#include <string.h>#include <unistd.h>#include <stdlib.h>int num=100;int main(){#if 0 write(1, " hello word\n", sizeof( "hello word\n")); printf

动图：vfork.c#include <stdio.h>#include <unistd.h>#include <fcntl.h>#include <string.h>#include <unistd.h>#include <stdlib.h>int mysystem();void my_out(){ puts("----退出进程创建-------");}int main(int argc, ch

动图：#include <stdio.h>#include <unistd.h>#include <fcntl.h>#include <string.h>#include <unistd.h>#include <stdlib.h>int mysystem(const char *string);void my_out(){ puts("----退出进程创建-------");}char buf_2[1

#include<stdio.h>#include<string.h>#include <sys/types.h>#include <sys/stat.h>#include <fcntl.h>#include <unistd.h>int main(){#if 0 FILE*fp = fopen("./my.c", "w+"); if(fp == NULL) { perror

动图：#include<stdio.h>#include<string.h>#include <sys/types.h>#include <sys/stat.h>#include <fcntl.h>#include <unistd.h>#include <sys/stat.h>#include <dirent.h>//读取目录#include <stdlib.h>void s