-/* $Id$ */
/***
- Copyright (C) 1994, 1996, 1997 Free Software Foundation, Inc.
- Copyright (C) 2005, Cendio AB.
- This file is part of PulseAudio.
- Based on work for the GNU C Library.
+ This file is part of PulseAudio.
+
+ Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
- PulseAudio is free software; you can redistribute it and/or modify it
- under the terms of the GNU Library General Public License as published
- by the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 of the License,
+ or (at your option) any later version.
- PulseAudio is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
+ PulseAudio is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with PulseAudio; If not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- USA.
+ You should have received a copy of the GNU Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+/***
+ Based on work for the GNU C Library.
+ Copyright (C) 1994, 1996, 1997 Free Software Foundation, Inc.
***/
/* Poll the file descriptors described by the NFDS structures starting at
#include <config.h>
#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
#include <errno.h>
+#include <fcntl.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
-#include "winsock.h"
-
-#ifndef HAVE_SYS_POLL_H
-
+#include <pulsecore/socket.h>
#include <pulsecore/core-util.h>
+#include <pulse/util.h>
#include "poll.h"
-int poll (struct pollfd *fds, unsigned long int nfds, int timeout) {
+/* Mac OSX fails to implement poll() in a working way since 10.4. IOW, for
+ * several years. We need to enable a dirty workaround and emulate that call
+ * with select(), just like for Windows. sic! */
+
+#if !defined(HAVE_POLL_H) || defined(OS_IS_DARWIN)
+
+int pa_poll (struct pollfd *fds, unsigned long int nfds, int timeout) {
struct timeval tv;
fd_set rset, wset, xset;
struct pollfd *f;
int ready;
int maxfd = 0;
+#ifdef OS_IS_WIN32
char data[64];
+#endif
FD_ZERO (&rset);
FD_ZERO (&wset);
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
- ready = select ((SELECT_TYPE_ARG1) maxfd + 1, SELECT_TYPE_ARG234 &rset,
- SELECT_TYPE_ARG234 &wset, SELECT_TYPE_ARG234 &xset,
- SELECT_TYPE_ARG5 (timeout == -1 ? NULL : &tv));
+ ready = select(maxfd + 1, &rset, &wset, &xset, (timeout == -1 ? NULL : &tv));
+
if ((ready == -1) && (errno == EBADF)) {
ready = 0;
+ maxfd = -1;
+
+#ifdef OS_IS_WIN32
+ /*
+ * Windows has no fcntl(), so we have to trick around with more
+ * select() calls to find out what went wrong
+ */
FD_ZERO (&rset);
FD_ZERO (&wset);
FD_ZERO (&xset);
- maxfd = -1;
-
for (f = fds; f < &fds[nfds]; ++f) {
if (f->fd != -1) {
fd_set sngl_rset, sngl_wset, sngl_xset;
singl_tv.tv_sec = 0;
singl_tv.tv_usec = 0;
- if (select((SELECT_TYPE_ARG1) f->fd, SELECT_TYPE_ARG234 &rset,
- SELECT_TYPE_ARG234 &wset, SELECT_TYPE_ARG234 &xset,
- SELECT_TYPE_ARG5 &singl_tv) != -1) {
+ if (select(f->fd, &rset, &wset, &xset, &singl_tv) != -1) {
if (f->events & POLLIN)
FD_SET (f->fd, &rset);
if (f->events & POLLOUT)
}
}
+#else /* !OS_IS_WIN32 */
+
+ for (f = fds; f < &fds[nfds]; f++)
+ if (f->fd != -1) {
+ /* use fcntl() to find out whether the descriptor is valid */
+ if (fcntl(f->fd, F_GETFL) != -1) {
+ if (f->fd > maxfd && (f->events & (POLLIN|POLLOUT|POLLPRI))) {
+ maxfd = f->fd;
+ ready++;
+ }
+ } else {
+ FD_CLR(f->fd, &rset);
+ FD_CLR(f->fd, &wset);
+ FD_CLR(f->fd, &xset);
+ }
+ }
+
+#endif
+
if (ready) {
/* Linux alters the tv struct... but it shouldn't matter here ...
* as we're going to be a little bit out anyway as we've just eaten
* more than a couple of cpu cycles above */
- ready = select ((SELECT_TYPE_ARG1) maxfd + 1, SELECT_TYPE_ARG234 &rset,
- SELECT_TYPE_ARG234 &wset, SELECT_TYPE_ARG234 &xset,
- SELECT_TYPE_ARG5 (timeout == -1 ? NULL : &tv));
+ ready = select(maxfd + 1, &rset, &wset, &xset, (timeout == -1 ? NULL : &tv));
}
}
if (FD_ISSET (f->fd, &rset)) {
/* support for POLLHUP. An hung up descriptor does not
increase the return value! */
+#ifdef OS_IS_DARWIN
+ /* There is a bug in Mac OS X that causes it to ignore MSG_PEEK
+ * for some kinds of descriptors. Detect if this descriptor is a
+ * connected socket, a server socket, or something else using a
+ * 0-byte recv, and use ioctl(2) to detect POLLHUP. */
+ int r = recv(f->fd, NULL, 0, MSG_PEEK);
+ if (r == 0 || (r < 0 && errno == ENOTSOCK))
+ ioctl(f->fd, FIONREAD, &r);
+
+ if (r == 0)
+ f->revents |= POLLHUP;
+#else /* !OS_IS_DARWIN */
if (recv (f->fd, data, 64, MSG_PEEK) == -1) {
if (errno == ESHUTDOWN || errno == ECONNRESET ||
errno == ECONNABORTED || errno == ENETRESET) {
f->revents |= POLLHUP;
}
}
+#endif
if (f->revents == 0)
f->revents |= POLLIN;