fi1.c

Linux大学上机源码学习

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#define FIFO_FILE "myfifo"
int main()
{ int fifo_fd,n,total_byte=0;
  char readbuf[4096+1];
  mkfifo(FIFO_FILE,0666);
  fifo_fd=open(FIFO_FILE,O_RDONLY);
  while((n=read(fifo_fd,readbuf,4096))>0){
     printf("%d received %d bype\n",getpid(),n);
     total_byte+=n;
  }
  close(fifo_fd);
  printf("Process %d received %d bytes then finished\n",getpid(),total_byte);
  return 0;
}