p9-10.c

SUN Solaris8平台下进程间通信

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <termios.h>
#include <errno.h>
int main(void)
{
    int   tcflush_value;
    int   stat_loc;
    int   fildes ;
    char  buf[] = "hello world\n";
    int   i,a[1024];
    fildes = fileno(stdout);
    fprintf (stdout,"Example of line control functions\n");
    fprintf (stdout,"write string to stdout\n");
    write(fildes, buf, sizeof(buf));
    fprintf (stdout,"suspend transmission or reception of data\n");
    tcdrain (fildes);          /* 等待输出队列中的数据全部送出 */
    tcflow(fildes, TCOOFF);    /* 暂停输出 */
    for(i = 0; i < 1024; i++)
        a[i] = 101;
    write(fildes, a, 1024);
    fprintf (stdout,"flush the stdin and discard the output\n");
    tcflush_value = tcflush(fildes, TCIOFLUSH);     /* 清除输入输出队列 */ 
    if (tcflush_value < 0)
        fprintf (stderr,"ERROR: tcflush() call failed\n");
    fprintf (stdout,"tcflush() call successful\n");
    fprintf (stdout,"no output yet\n");
    fprintf (stdout,"restart the output\n");
    tcflow (fildes, TCOON);     /* 恢复输出 */
    
    exit (0);
}