Esempi in C++ (Cpp) per poll_set_event

Esempio n. 1

File: wterm.c Progetto: hchunhui/myos

int main()
{
	draw_init();
	draw_set_canvas(canv, (void *)buff);
	if(w_connect(&priv_fd, &ifd, &ofd))
		return -1;

	poll_fd = open("/dev/poll/0", 0);
	pipe_in = open("/dev/pipe/0", 0);
	pipe_out = open("/dev/pipe/0", 0);
	poll_set_event(poll_fd, pipe_out, POLL_TYPE_READ);
	if(fork() == 0)
	{
		dup2(pipe_in, 0);
		dup2(pipe_out, 1);
		dup2(pipe_out, 2);
		_exit(execl("/bin/sh", "*sh*", NULL));
	}

	w_send_wcreate(ofd, 0, 0, 0, C*FW, (R+1)*FH, "WTerm");
	w_wait_reply(ifd, &hwnd, &shm_key);
	shm_at(shm_key, buff, SHM_RW);
	printf("hwnd: %x\n",hwnd);
	poll_set_event(poll_fd, ifd, POLL_TYPE_READ);

	draw_title();
	term_init();
	main_loop();

	w_disconnect(priv_fd, ifd, ofd);
	shm_dt(shm_key, buff);
	printf("exit with exit code 0\n");
	return 0;
}

Esempio n. 2

int select(int nfds,
	   fd_set *rfds, fd_set *wfds, fd_set *efds,
	   struct timeval *timeout)
{
	int poll_fd = open("/dev/poll/0", 0);
	int timer_fd = -1;
	int fd;
	int i, tick, ret, n;

	n = 0;
	for(fd = 0; fd < nfds; fd++) {
		if(FD_ISSET(fd, rfds)) {
			n++;
			poll_set_event(poll_fd, fd, POLL_TYPE_READ);
		}
		if(FD_ISSET(fd, wfds)) {
			n++;
			poll_set_event(poll_fd, fd, POLL_TYPE_WRITE);
		}
		if(FD_ISSET(fd, efds)) {
			n++;
			poll_set_event(poll_fd, fd, POLL_TYPE_EXCEPT);
		}
	}

	if(timeout) {
		tick = timeout->tv_sec * HZ + timeout->tv_usec * HZ / 1000000;
		timer_fd = open("/dev/timer/0", 0);
		n++;
		poll_set_event(poll_fd, timer_fd, POLL_TYPE_READ);
		write(timer_fd, &tick, sizeof(tick));
	}

	struct s_poll_event evs[n];
	if(read(poll_fd, evs, n*sizeof(struct s_poll_event)) == -1) {
		errno = EINVAL;
		ret = -1;
		goto clean;
	}

	ret = n / sizeof(struct s_poll_event);
	FD_ZERO(rfds);
	FD_ZERO(wfds);
	FD_ZERO(efds);

	for(i = 0; i < n; i++) {
		fd = evs[i].fd;
		if(fd == timer_fd) {
			n--;
			continue;
		}
		if(evs[i].type & POLL_TYPE_READ)
			FD_SET(fd, rfds);
		if(evs[i].type & POLL_TYPE_WRITE)
			FD_SET(fd, wfds);
		if(evs[i].type & POLL_TYPE_EXCEPT)
			FD_SET(fd, efds);
	}

clean:
	close(poll_fd);
	if(timer_fd != -1)
		close(timer_fd);
	return ret;
}