189     struct timeval wait_time;  variable
195     wait_time.tv_sec = 2;
196     wait_time.tv_usec = 0;
200     int ret = select(max_fd + 1, &read_fds, NULL, NULL, &wait_time);
254     struct timeval wait_time;  variable
260     wait_time.tv_sec = 2;
261     wait_time.tv_usec = 0;
264     int ret = select(fd + 1, &read_fds, &write_fds, &error_fds, &wait_time);
289     struct timeval wait_time;  variable
296     wait_time.tv_sec = 2;
297     wait_time.tv_usec = 0;
299     int ret = select(fd + 1, &read_fds, &write_fds, &error_fds, &wait_time);
315     struct timeval wait_time;  in select_task()  local
319     wait_time.tv_sec = 2;  in select_task()
320     wait_time.tv_usec = 0;  in select_task()
322     int ret = select(fd + 1, &read_fds, NULL, NULL, &wait_time);  in select_task()