MI_POLL_RD_FLAGS
(rds).events = MI_POLL_RD_FLAGS; \
(((rds).revents & MI_POLL_RD_FLAGS) != 0)
pfd[nfd].events = MI_POLL_RD_FLAGS;
pfd[nfd].events = MI_POLL_RD_FLAGS;
if ((pfd[i].revents & MI_POLL_RD_FLAGS) != 0)
if ((pfd[i].revents & ~MI_POLL_RD_FLAGS) != 0)