1 files changed, 0 insertions, 311 deletions
diff --git a/libs/libevent/docs/devpoll.c b/libs/libevent/docs/devpoll.c
deleted file mode 100644
index 3a2f86d6f1..0000000000
--- a/libs/libevent/docs/devpoll.c
+++ /dev/null
@@ -1,311 +0,0 @@
-/*
- * Copyright 2000-2009 Niels Provos <provos@citi.umich.edu>
- * Copyright 2009-2012 Niels Provos and Nick Mathewson
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#include "event2/event-config.h"
-#include "evconfig-private.h"
-
-#ifdef EVENT__HAVE_DEVPOLL
-
-#include <sys/types.h>
-#include <sys/resource.h>
-#ifdef EVENT__HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-#include <sys/queue.h>
-#include <sys/devpoll.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#include "event2/event.h"
-#include "event2/event_struct.h"
-#include "event2/thread.h"
-#include "event-internal.h"
-#include "evsignal-internal.h"
-#include "log-internal.h"
-#include "evmap-internal.h"
-#include "evthread-internal.h"
-
-struct devpollop {
-	struct pollfd *events;
-	int nevents;
-	int dpfd;
-	struct pollfd *changes;
-	int nchanges;
-};
-
-static void *devpoll_init(struct event_base *);
-static int devpoll_add(struct event_base *, int fd, short old, short events, void *);
-static int devpoll_del(struct event_base *, int fd, short old, short events, void *);
-static int devpoll_dispatch(struct event_base *, struct timeval *);
-static void devpoll_dealloc(struct event_base *);
-
-const struct eventop devpollops = {
-	"devpoll",
-	devpoll_init,
-	devpoll_add,
-	devpoll_del,
-	devpoll_dispatch,
-	devpoll_dealloc,
-	1, /* need reinit */
-	EV_FEATURE_FDS|EV_FEATURE_O1,
-	0
-};
-
-#define NEVENT	32000
-
-static int
-devpoll_commit(struct devpollop *devpollop)
-{
-	/*
-	 * Due to a bug in Solaris, we have to use pwrite with an offset of 0.
-	 * Write is limited to 2GB of data, until it will fail.
-	 */
-	if (pwrite(devpollop->dpfd, devpollop->changes,
-		sizeof(struct pollfd) * devpollop->nchanges, 0) == -1)
-		return (-1);
-
-	devpollop->nchanges = 0;
-	return (0);
-}
-
-static int
-devpoll_queue(struct devpollop *devpollop, int fd, int events) {
-	struct pollfd *pfd;
-
-	if (devpollop->nchanges >= devpollop->nevents) {
-		/*
-		 * Change buffer is full, must commit it to /dev/poll before
-		 * adding more
-		 */
-		if (devpoll_commit(devpollop) != 0)
-			return (-1);
-	}
-
-	pfd = &devpollop->changes[devpollop->nchanges++];
-	pfd->fd = fd;
-	pfd->events = events;
-	pfd->revents = 0;
-
-	return (0);
-}
-
-static void *
-devpoll_init(struct event_base *base)
-{
-	int dpfd, nfiles = NEVENT;
-	struct rlimit rl;
-	struct devpollop *devpollop;
-
-	if (!(devpollop = mm_calloc(1, sizeof(struct devpollop))))
-		return (NULL);
-
-	if (getrlimit(RLIMIT_NOFILE, &rl) == 0 &&
-	    rl.rlim_cur != RLIM_INFINITY)
-		nfiles = rl.rlim_cur;
-
-	/* Initialize the kernel queue */
-	if ((dpfd = evutil_open_closeonexec_("/dev/poll", O_RDWR, 0)) == -1) {
-		event_warn("open: /dev/poll");
-		mm_free(devpollop);
-		return (NULL);
-	}
-
-	devpollop->dpfd = dpfd;
-
-	/* Initialize fields */
-	/* FIXME: allocating 'nfiles' worth of space here can be
-	 * expensive and unnecessary.  See how epoll.c does it instead. */
-	devpollop->events = mm_calloc(nfiles, sizeof(struct pollfd));
-	if (devpollop->events == NULL) {
-		mm_free(devpollop);
-		close(dpfd);
-		return (NULL);
-	}
-	devpollop->nevents = nfiles;
-
-	devpollop->changes = mm_calloc(nfiles, sizeof(struct pollfd));
-	if (devpollop->changes == NULL) {
-		mm_free(devpollop->events);
-		mm_free(devpollop);
-		close(dpfd);
-		return (NULL);
-	}
-
-	evsig_init_(base);
-
-	return (devpollop);
-}
-
-static int
-devpoll_dispatch(struct event_base *base, struct timeval *tv)
-{
-	struct devpollop *devpollop = base->evbase;
-	struct pollfd *events = devpollop->events;
-	struct dvpoll dvp;
-	int i, res, timeout = -1;
-
-	if (devpollop->nchanges)
-		devpoll_commit(devpollop);
-
-	if (tv != NULL)
-		timeout = tv->tv_sec * 1000 + (tv->tv_usec + 999) / 1000;
-
-	dvp.dp_fds = devpollop->events;
-	dvp.dp_nfds = devpollop->nevents;
-	dvp.dp_timeout = timeout;
-
-	EVBASE_RELEASE_LOCK(base, th_base_lock);
-
-	res = ioctl(devpollop->dpfd, DP_POLL, &dvp);
-
-	EVBASE_ACQUIRE_LOCK(base, th_base_lock);
-
-	if (res == -1) {
-		if (errno != EINTR) {
-			event_warn("ioctl: DP_POLL");
-			return (-1);
-		}
-
-		return (0);
-	}
-
-	event_debug(("%s: devpoll_wait reports %d", __func__, res));
-
-	for (i = 0; i < res; i++) {
-		int which = 0;
-		int what = events[i].revents;
-
-		if (what & POLLHUP)
-			what |= POLLIN | POLLOUT;
-		else if (what & POLLERR)
-			what |= POLLIN | POLLOUT;
-
-		if (what & POLLIN)
-			which |= EV_READ;
-		if (what & POLLOUT)
-			which |= EV_WRITE;
-
-		if (!which)
-			continue;
-
-		/* XXX(niels): not sure if this works for devpoll */
-		evmap_io_active_(base, events[i].fd, which);
-	}
-
-	return (0);
-}
-
-
-static int
-devpoll_add(struct event_base *base, int fd, short old, short events, void *p)
-{
-	struct devpollop *devpollop = base->evbase;
-	int res;
-	(void)p;
-
-	/*
-	 * It's not necessary to OR the existing read/write events that we
-	 * are currently interested in with the new event we are adding.
-	 * The /dev/poll driver ORs any new events with the existing events
-	 * that it has cached for the fd.
-	 */
-
-	res = 0;
-	if (events & EV_READ)
-		res |= POLLIN;
-	if (events & EV_WRITE)
-		res |= POLLOUT;
-
-	if (devpoll_queue(devpollop, fd, res) != 0)
-		return (-1);
-
-	return (0);
-}
-
-static int
-devpoll_del(struct event_base *base, int fd, short old, short events, void *p)
-{
-	struct devpollop *devpollop = base->evbase;
-	int res;
-	(void)p;
-
-	res = 0;
-	if (events & EV_READ)
-		res |= POLLIN;
-	if (events & EV_WRITE)
-		res |= POLLOUT;
-
-	/*
-	 * The only way to remove an fd from the /dev/poll monitored set is
-	 * to use POLLREMOVE by itself.  This removes ALL events for the fd
-	 * provided so if we care about two events and are only removing one
-	 * we must re-add the other event after POLLREMOVE.
-	 */
-
-	if (devpoll_queue(devpollop, fd, POLLREMOVE) != 0)
-		return (-1);
-
-	if ((res & (POLLIN|POLLOUT)) != (POLLIN|POLLOUT)) {
-		/*
-		 * We're not deleting all events, so we must resubmit the
-		 * event that we are still interested in if one exists.
-		 */
-
-		if ((res & POLLIN) && (old & EV_WRITE)) {
-			/* Deleting read, still care about write */
-			devpoll_queue(devpollop, fd, POLLOUT);
-		} else if ((res & POLLOUT) && (old & EV_READ)) {
-			/* Deleting write, still care about read */
-			devpoll_queue(devpollop, fd, POLLIN);
-		}
-	}
-
-	return (0);
-}
-
-static void
-devpoll_dealloc(struct event_base *base)
-{
-	struct devpollop *devpollop = base->evbase;
-
-	evsig_dealloc_(base);
-	if (devpollop->events)
-		mm_free(devpollop->events);
-	if (devpollop->changes)
-		mm_free(devpollop->changes);
-	if (devpollop->dpfd >= 0)
-		close(devpollop->dpfd);
-
-	memset(devpollop, 0, sizeof(struct devpollop));
-	mm_free(devpollop);
-}
-
-#endif /* EVENT__HAVE_DEVPOLL */