static void port_poll (EV_P_ ev_tstamp timeout) { int res, i; struct timespec ts; uint_t nget = 1; EV_RELEASE_CB; ts.tv_sec = (time_t)timeout; ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9; res = port_getn (backend_fd, port_events, port_eventmax, &nget, &ts); EV_ACQUIRE_CB; if (res == -1) { if (errno != EINTR && errno != ETIME) ev_syserr ("(libev) port_getn"); return; } for (i = 0; i < nget; ++i) { if (port_events [i].portev_source == PORT_SOURCE_FD) { int fd = port_events [i].portev_object; fd_event ( EV_A_ fd, (port_events [i].portev_events & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0) | (port_events [i].portev_events & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0) ); port_associate_and_check (EV_A_ fd, anfds [fd].events); } } if (expect_false (nget == port_eventmax)) { ev_free (port_events); port_eventmax = array_nextsize (sizeof (port_event_t), port_eventmax, port_eventmax + 1); port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax); } }
static void kqueue_poll (EV_P_ ev_tstamp timeout) { int res, i; struct timespec ts; /* need to resize so there is enough space for errors */ if (kqueue_changecnt > kqueue_eventmax) { ev_free (kqueue_events); kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_changecnt); kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax); } EV_RELEASE_CB; EV_TS_SET (ts, timeout); res = kevent (backend_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts); EV_ACQUIRE_CB; kqueue_changecnt = 0; if (expect_false (res < 0)) { if (errno != EINTR) ev_syserr ("(libev) kevent"); return; } for (i = 0; i < res; ++i) { int fd = kqueue_events [i].ident; if (expect_false (kqueue_events [i].flags & EV_ERROR)) { int err = kqueue_events [i].data; /* we are only interested in errors for fds that we are interested in :) */ if (anfds [fd].events) { if (err == ENOENT) /* resubmit changes on ENOENT */ kqueue_modify (EV_A_ fd, 0, anfds [fd].events); else if (err == EBADF) /* on EBADF, we re-check the fd */ { if (fd_valid (fd)) kqueue_modify (EV_A_ fd, 0, anfds [fd].events); else fd_kill (EV_A_ fd); } else /* on all other errors, we error out on the fd */ fd_kill (EV_A_ fd); } } else fd_event ( EV_A_ fd, kqueue_events [i].filter == EVFILT_READ ? EV_READ : kqueue_events [i].filter == EVFILT_WRITE ? EV_WRITE : 0 ); } if (expect_false (res == kqueue_eventmax)) { ev_free (kqueue_events); kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_eventmax + 1); kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax); } }
array_realloc (int elem, void *base, int *cur, int cnt) { *cur = array_nextsize (elem, *cur, cnt); return mem_realloc (base, elem * (*cur)); }