mptylogpoll
ms = mptylogpoll(MasterPtyFd, fdlog, wmsg, &wdog_time);
(void)mptylogpoll(MasterPtyFd, fdlog, wmsg, &wdog_time);
while (mptylogpoll(MasterPtyFd, fdlog, wmsg, &wdog_time) == MPTY_DATA)
static int mptylogpoll(int ptyfd, int fdlog, wmsg_t *wmsg,