IO进程线程Day6
1> 使用有名管道完成两个进程之间相互通信
#include<myhead.h>
int main(int argc, const char *argv[])
{//int wfd=-1;if((wfd=open("./pipe1",O_RDONLY))==-1){perror("wfd open error");return -1;}printf("读端打开成功\n");char wbuf[128]="";while(1){memset(wbuf,0,sizeof(wbuf));read(wfd,wbuf,sizeof(wbuf));printf("%s\n",wbuf);if(strcmp(wbuf,"quit")==0)break;}close(wfd);/************************************/int rfd=-1;if((rfd=open("./pipe2",O_WRONLY))==-1){perror("rfd open error");return -1;}printf("写端打开成功，请开始输入:\n");fflush(stdout);char sbuf[128]="";while(1){memset(sbuf,0,sizeof(sbuf));read(0,sbuf,sizeof(sbuf));sbuf[strlen(sbuf)-1]='\0';write(rfd,sbuf,sizeof(sbuf));if(strcmp(sbuf,"quit")==0)break;}close(rfd);return 0;
}#include<myhead.h>
int main(int argc, const char *argv[])
{//int rfd=-1;if((rfd=open("./pipe1",O_WRONLY))==-1){perror("rfd open error");return -1;}printf("写端打开成功,请开始输入:\n");char sbuf[128]="";while(1){memset(sbuf,0,sizeof(sbuf));read(0,sbuf,sizeof(sbuf));sbuf[strlen(sbuf)-1]='\0';write(rfd,sbuf,sizeof(sbuf));if(strcmp(sbuf,"quit")==0)break;}close(rfd);/**************************************************/int wfd=-1;if((wfd=open("./pipe2",O_RDONLY))==-1){perror("wfd open error");return -1;}printf("读端打开成功\n");char wbuf[128]="";while(1){memset(wbuf,0,sizeof(wbuf));read(wfd,wbuf,sizeof(wbuf));printf("%s\n",wbuf);fflush(stdout);if(strcmp(wbuf,"quit")==0)break;}close(wfd);return 0;
}