my_code/pipe/pipe.h

#include <sys/types.h> /* basic system data types */
#include <sys/time.h>  /* timeval{} for select() */
#include <time.h>      /* timespec{} for pselect() */
#include <errno.h>
#include <fcntl.h>  /* for nonblocking */
#include <limits.h> /* PIPE_BUF */
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h> /* for S_xxx file mode constants */
#include <unistd.h>
#include <sys/wait.h>

#define MAXLINE 4096