mirror of
https://github.com/mpv-player/mpv
synced 2024-12-28 01:52:19 +00:00
a61b784d90
first of all, POLLERR is supposed to be ignored in `.events` and only returned in `.revents`. secondly select()'s exceptfds does not have a 1:1 correspondence with POLLERR. thankfully, the only caller of this function (in terminal-unix) never set the POLLERR flag so the errorfds were unused anyways. so go ahead and remove it entirely instead of pretending we can emulate something that's not possible.
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
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* poll shim that supports device files on macOS.
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*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <poll.h>
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#include <sys/select.h>
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#include <stdio.h>
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#include "osdep/polldev.h"
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int polldev(struct pollfd fds[], nfds_t nfds, int timeout) {
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#ifdef __APPLE__
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int maxfd = 0;
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fd_set readfds, writefds;
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FD_ZERO(&readfds);
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FD_ZERO(&writefds);
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for (size_t i = 0; i < nfds; ++i) {
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struct pollfd *fd = &fds[i];
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if (fd->fd > maxfd) {
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maxfd = fd->fd;
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}
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if ((fd->events & POLLIN)) {
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FD_SET(fd->fd, &readfds);
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}
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if ((fd->events & POLLOUT)) {
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FD_SET(fd->fd, &writefds);
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}
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}
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struct timeval _timeout = {
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.tv_sec = timeout / 1000,
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.tv_usec = (timeout % 1000) * 1000
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};
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int n = select(maxfd + 1, &readfds, &writefds, NULL,
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timeout != -1 ? &_timeout : NULL);
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if (n < 0) {
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return n;
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}
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for (size_t i = 0; i < nfds; ++i) {
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struct pollfd *fd = &fds[i];
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fd->revents = 0;
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if (FD_ISSET(fd->fd, &readfds)) {
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fd->revents |= POLLIN;
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}
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if (FD_ISSET(fd->fd, &writefds)) {
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fd->revents |= POLLOUT;
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}
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}
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return n;
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#else
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return poll(fds, nfds, timeout);
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#endif
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}
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