1.
线程B:
#include
#include
#include
#include
#include
#include
#include
int main(int argc, const char *argv[])
{
umask(0);
if(mkfifo("./fifo",0777)<0)
{
if(errno!=17)//17==EEXIST
{
perror("mkfifo");
return -1;
}
}
printf("create FIFO sucess\n");
int fd=open("./fifo",O_RDONLY);
if(fd<0)
{
perror("open");
return -1;
}
printf("open FIFO read success\n");
//读
char buf[128]="";
ssize_t res=0;
while(1)
{
bzero(buf,sizeof(buf));
res=read(fd,buf,sizeof(buf));
if(res<0)
{
perror("read");
return -1;
}
else if(0==res)
{
printf("对端关闭\n");
break;
}
else if(strcmp(buf,"quit")==0)
{
printf("左端停止读取\n");
break;
}
printf("%ld : %s\n",res,buf);
}
int fi=open("./fifo",O_WRONLY);
if(fi<0)
{
perror("open");
return -1;
}
//写
while(1)
{
printf("请输入>>>");
fgets(buf,sizeof(buf),stdin);
buf[strlen(buf)-1]=0;
res=write(fi,buf,sizeof(buf));
if(res<0)
{
perror("write");
return -1;
}
if(strcmp(buf,"quit")==0)
{
printf("左端停止写入\n");
close(fi);
break;
}
printf("写入成功\n");
}
close(fi);
close(fd);
return 0;
}
线程A:
#include
#include
#include
#include
#include
#include
#include
int main(int argc, const char *argv[])
{
umask(0);
if(mkfifo("./fifo",0777)<0)
{
if(errno!=17)//17==EEXIST
{
perror("mkfifo");
return -1;
}
}
printf("create FIFO sucess\n");
int fd=open("./fifo",O_WRONLY);
if(fd<0)
{
perror("open");
return -1;
}
printf("open FIFO write success\n");
//写
char buf[128]="";
ssize_t res=0;
while(1)
{
printf("请输入>>>");
fgets(buf,sizeof(buf),stdin);
buf[strlen(buf)-1]=0;
res=write(fd,buf,sizeof(buf));
if(res<0)
{
perror("write");
return -1;
}
if(strcmp(buf,"quit")==0)
{
printf("右端停止写入\n");
close(fd);
break;
}
printf("写入成功\n");
}
int fi=open("./fifo",O_RDONLY);
if(fi<0)
{
perror("open");
return -1;
}
printf("open FIFO write success\n");
//读
while(1)
{
bzero(buf,sizeof(buf));
res=read(fi,buf,sizeof(buf));
if(res<0)
{
perror("read");
return -1;
}
else if(0==res)
{
printf("对端关闭\n");
break;
}
printf("%ld : %s\n",res,buf);
}
close(fi);
close(fd);
return 0;
}
运行结果:
2.
线程A:
#include
#include
#include
#include
#include
#include
#include
#include
#include
char buf[128]="";
ssize_t res=0;
int fd;
int fi;
void * callback1(void * arg)
{
//读
while(1)
{
bzero(buf,sizeof(buf));
res=read(fd,buf,sizeof(buf));
if(res<0)
{
perror("read");
return NULL;
}
else if(0==res)
{
printf("对端关闭\n");
break;
}
else if(strcmp(buf,"quit")==0)
{
printf("左端停止读取\n");
break;
}
printf("%ld : %s\n",res,buf);
}
pthread_exit(NULL);
}
void * callback2(void *arg)
{
//写
while(1)
{
printf("请输入>>>");
fgets(buf,sizeof(buf),stdin);
buf[strlen(buf)-1]=0;
res=write(fi,buf,sizeof(buf));
if(res<0)
{
perror("write");
return NULL;
}
if(strcmp(buf,"quit")==0)
{
printf("左端停止写入\n");
close(fi);
break;
}
printf("写入成功\n");
}
pthread_exit(NULL);
}
int main(int argc, const char *argv[])
{
//创建有名管道文件用于进程间通信
umask(0);
if(mkfifo("./fifo1",0777)<0)
{
if(errno!=17)//17==EEXIST
{
perror("mkfifo");
return -1;
}
}
printf("create fifo1 sucess\n");
if(mkfifo("./fifo2",0777)<0)
{
if(errno!=17)//17==EEXIST
{
perror("mkfifo");
return -1;
}
}
printf("create fifo2 sucess\n");
fd=open("./fifo1",O_RDONLY);
if(fd<0)
{
perror("open");
return -1;
}
printf("open FIFO read success\n");
fi=open("./fifo2",O_WRONLY);
if(fi<0)
{
perror("open");
return -1;
}
printf("open FIFO read success\n");
//创建线程A
pthread_t tid1;
int res1=pthread_create(&tid1,NULL,callback1,NULL);
if(res1!=0)
{
fprintf(stderr,"create error __%d__",__LINE__);
return -1;
}
//创建线程B
pthread_t tid2;
int res2=pthread_create(&tid2,NULL,callback2,NULL);
if(res2!=0)
{
fprintf(stderr,"create error __%d__",__LINE__);
return -1;
}
pthread_join(tid1,NULL);
pthread_join(tid2,NULL);
close(fi);
close(fd);
return 0;
}
线程B:
#include
#include
#include
#include
#include
#include
#include
#include
#include
char buf[128]="";
ssize_t res=0;
pthread_t tid1;
pthread_t tid2;
int fd;
int fi;
void * callback1(void * arg)
{
//读
while(1)
{
bzero(buf,sizeof(buf));
res=read(fi,buf,sizeof(buf));
if(res<0)
{
perror("read");
return NULL;
}
else if(0==res)
{
printf("对端关闭\n");
break;
}
else if(strcmp(buf,"quit")==0)
{
printf("左端停止读取\n");
break;
}
printf("%ld : %s\n",res,buf);
}
pthread_exit(NULL);
}
void * callback2(void *arg)
{
//写
while(1)
{
printf("请输入>>>");
fgets(buf,sizeof(buf),stdin);
buf[strlen(buf)-1]=0;
res=write(fd,buf,sizeof(buf));
if(res<0)
{
perror("write");
return NULL;
}
if(strcmp(buf,"quit")==0)
{
printf("左端停止写入\n");
close(fd);
break;
}
printf("写入成功\n");
}
pthread_exit(NULL);
}
int main(int argc, const char *argv[])
{
//创建有名管道文件用于进程间通信
umask(0);
if(mkfifo("./fifo1",0777)<0)
{
if(errno!=17)//17==EEXIST
{
perror("mkfifo");
return -1;
}
}
printf("create fifo1 sucess\n");
if(mkfifo("./fifo2",0777)<0)
{
if(errno!=17)//17==EEXIST
{
perror("mkfifo");
return -1;
}
}
printf("create fifo2 sucess\n");
fd=open("./fifo1",O_WRONLY);
if(fd<0)
{
perror("open");
return -1;
}
printf("open FIFO read success\n");
fi=open("./fifo2",O_RDONLY);
if(fi<0)
{
perror("open");
return -1;
}
printf("open FIFO read success\n");
//创建线程A
int res1=pthread_create(&tid1,NULL,callback1,NULL);
if(res1!=0)
{
fprintf(stderr,"create error __%d__",__LINE__);
return -1;
}
//创建线程B
int res2=pthread_create(&tid2,NULL,callback2,NULL);
if(res2!=0)
{
fprintf(stderr,"create error __%d__",__LINE__);
return -1;
}
pthread_join(tid1,NULL);
pthread_join(tid2,NULL);
close(fi);
close(fd);
return 0;
}
运行结果: