1 files changed, 0 insertions, 451 deletions
diff --git a/libs/libevent/docs/evport.c b/libs/libevent/docs/evport.c
deleted file mode 100644
index a014386bfe..0000000000
--- a/libs/libevent/docs/evport.c
+++ /dev/null
@@ -1,451 +0,0 @@
-/*
- * Submitted by David Pacheco (dp.spambait@gmail.com)
- *
- * Copyright 2006-2007 Niels Provos
- * Copyright 2007-2012 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 SUN MICROSYSTEMS, INC. ``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 SUN MICROSYSTEMS, INC. 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.
- */
-
-/*
- * Copyright (c) 2007 Sun Microsystems. All rights reserved.
- * Use is subject to license terms.
- */
-
-/*
- * evport.c: event backend using Solaris 10 event ports. See port_create(3C).
- * This implementation is loosely modeled after the one used for select(2) (in
- * select.c).
- *
- * The outstanding events are tracked in a data structure called evport_data.
- * Each entry in the ed_fds array corresponds to a file descriptor, and contains
- * pointers to the read and write events that correspond to that fd. (That is,
- * when the file is readable, the "read" event should handle it, etc.)
- *
- * evport_add and evport_del update this data structure. evport_dispatch uses it
- * to determine where to callback when an event occurs (which it gets from
- * port_getn).
- *
- * Helper functions are used: grow() grows the file descriptor array as
- * necessary when large fd's come in. reassociate() takes care of maintaining
- * the proper file-descriptor/event-port associations.
- *
- * As in the select(2) implementation, signals are handled by evsignal.
- */
-
-#include "event2/event-config.h"
-#include "evconfig-private.h"
-
-#ifdef EVENT__HAVE_EVENT_PORTS
-
-#include <sys/time.h>
-#include <sys/queue.h>
-#include <errno.h>
-#include <poll.h>
-#include <port.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "event2/thread.h"
-
-#include "evthread-internal.h"
-#include "event-internal.h"
-#include "log-internal.h"
-#include "evsignal-internal.h"
-#include "evmap-internal.h"
-
-#define INITIAL_EVENTS_PER_GETN 8
-#define MAX_EVENTS_PER_GETN 4096
-
-/*
- * Per-file-descriptor information about what events we're subscribed to. These
- * fields are NULL if no event is subscribed to either of them.
- */
-
-struct fd_info {
-	/* combinations of EV_READ and EV_WRITE */
-	short fdi_what;
-	/* Index of this fd within ed_pending, plus 1.  Zero if this fd is
-	 * not in ed_pending.  (The +1 is a hack so that memset(0) will set
-	 * it to a nil index. */
-	int pending_idx_plus_1;
-};
-
-#define FDI_HAS_READ(fdi)  ((fdi)->fdi_what & EV_READ)
-#define FDI_HAS_WRITE(fdi) ((fdi)->fdi_what & EV_WRITE)
-#define FDI_HAS_EVENTS(fdi) (FDI_HAS_READ(fdi) || FDI_HAS_WRITE(fdi))
-#define FDI_TO_SYSEVENTS(fdi) (FDI_HAS_READ(fdi) ? POLLIN : 0) | \
-    (FDI_HAS_WRITE(fdi) ? POLLOUT : 0)
-
-struct evport_data {
-	int		ed_port;	/* event port for system events  */
-	/* How many elements of ed_pending should we look at? */
-	int ed_npending;
-	/* How many elements are allocated in ed_pending and pevtlist? */
-	int ed_maxevents;
-	/* fdi's that we need to reassoc */
-	int *ed_pending;
-	/* storage space for incoming events. */ 
-	port_event_t *ed_pevtlist;
-	
-};
-
-static void*	evport_init(struct event_base *);
-static int evport_add(struct event_base *, int fd, short old, short events, void *);
-static int evport_del(struct event_base *, int fd, short old, short events, void *);
-static int	evport_dispatch(struct event_base *, struct timeval *);
-static void	evport_dealloc(struct event_base *);
-static int	grow(struct evport_data *, int min_events);
-
-const struct eventop evportops = {
-	"evport",
-	evport_init,
-	evport_add,
-	evport_del,
-	evport_dispatch,
-	evport_dealloc,
-	1, /* need reinit */
-	0, /* features */
-	sizeof(struct fd_info), /* fdinfo length */
-};
-
-/*
- * Initialize the event port implementation.
- */
-
-static void*
-evport_init(struct event_base *base)
-{
-	struct evport_data *evpd;
-
-	if (!(evpd = mm_calloc(1, sizeof(struct evport_data))))
-		return (NULL);
-
-	if ((evpd->ed_port = port_create()) == -1) {
-		mm_free(evpd);
-		return (NULL);
-	}
-
-	if (grow(evpd, INITIAL_EVENTS_PER_GETN) < 0) {
-		close(evpd->ed_port);
-		mm_free(evpd);
-		return NULL;
-	}
-		
-	evpd->ed_npending = 0;
-
-	evsig_init_(base);
-
-	return (evpd);
-}
-
-static int
-grow(struct evport_data *data, int min_events)
-{
-	int newsize;
-	int *new_pending;
-	port_event_t *new_pevtlist;
-	if (data->ed_maxevents) {
-		newsize = data->ed_maxevents;
-		do {
-			newsize *= 2;
-		} while (newsize < min_events);
-	} else {
-		newsize = min_events;
-	}
-
-	new_pending = mm_realloc(data->ed_pending, sizeof(int)*newsize);
-	if (new_pending == NULL)
-		return -1;
-	data->ed_pending = new_pending;
-	new_pevtlist = mm_realloc(data->ed_pevtlist, sizeof(port_event_t)*newsize);
-	if (new_pevtlist == NULL)
-		return -1;
-	data->ed_pevtlist = new_pevtlist; 
-
-	data->ed_maxevents = newsize;
-	return 0;
-}
-
-#ifdef CHECK_INVARIANTS
-/*
- * Checks some basic properties about the evport_data structure. Because it
- * checks all file descriptors, this function can be expensive when the maximum
- * file descriptor ever used is rather large.
- */
-
-static void
-check_evportop(struct evport_data *evpd)
-{
-	EVUTIL_ASSERT(evpd);
-	EVUTIL_ASSERT(evpd->ed_port > 0);
-}
-
-/*
- * Verifies very basic integrity of a given port_event.
- */
-static void
-check_event(port_event_t* pevt)
-{
-	/*
-	 * We've only registered for PORT_SOURCE_FD events. The only
-	 * other thing we can legitimately receive is PORT_SOURCE_ALERT,
-	 * but since we're not using port_alert either, we can assume
-	 * PORT_SOURCE_FD.
-	 */
-	EVUTIL_ASSERT(pevt->portev_source == PORT_SOURCE_FD);
-}
-
-#else
-#define check_evportop(epop)
-#define check_event(pevt)
-#endif /* CHECK_INVARIANTS */
-
-/*
- * (Re)associates the given file descriptor with the event port. The OS events
- * are specified (implicitly) from the fd_info struct.
- */
-static int
-reassociate(struct evport_data *epdp, struct fd_info *fdip, int fd)
-{
-	int sysevents = FDI_TO_SYSEVENTS(fdip);
-
-	if (sysevents != 0) {
-		if (port_associate(epdp->ed_port, PORT_SOURCE_FD,
-				   fd, sysevents, fdip) == -1) {
-			event_warn("port_associate");
-			return (-1);
-		}
-	}
-
-	check_evportop(epdp);
-
-	return (0);
-}
-
-/*
- * Main event loop - polls port_getn for some number of events, and processes
- * them.
- */
-
-static int
-evport_dispatch(struct event_base *base, struct timeval *tv)
-{
-	int i, res;
-	struct evport_data *epdp = base->evbase;
-	port_event_t *pevtlist = epdp->ed_pevtlist;
-
-	/*
-	 * port_getn will block until it has at least nevents events. It will
-	 * also return how many it's given us (which may be more than we asked
-	 * for, as long as it's less than our maximum (ed_maxevents)) in
-	 * nevents.
-	 */
-	int nevents = 1;
-
-	/*
-	 * We have to convert a struct timeval to a struct timespec
-	 * (only difference is nanoseconds vs. microseconds). If no time-based
-	 * events are active, we should wait for I/O (and tv == NULL).
-	 */
-	struct timespec ts;
-	struct timespec *ts_p = NULL;
-	if (tv != NULL) {
-		ts.tv_sec = tv->tv_sec;
-		ts.tv_nsec = tv->tv_usec * 1000;
-		ts_p = &ts;
-	}
-
-	/*
-	 * Before doing anything else, we need to reassociate the events we hit
-	 * last time which need reassociation. See comment at the end of the
-	 * loop below.
-	 */
-	for (i = 0; i < epdp->ed_npending; ++i) {
-		struct fd_info *fdi = NULL;
-		const int fd = epdp->ed_pending[i];
-		if (fd != -1) {
-			/* We might have cleared out this event; we need
-			 * to be sure that it's still set. */
-			fdi = evmap_io_get_fdinfo_(&base->io, fd);
-		}
-
-		if (fdi != NULL && FDI_HAS_EVENTS(fdi)) {
-			reassociate(epdp, fdi, fd);
-			/* epdp->ed_pending[i] = -1; */
-			fdi->pending_idx_plus_1 = 0;
-		}
-	}
-
-	EVBASE_RELEASE_LOCK(base, th_base_lock);
-
-	res = port_getn(epdp->ed_port, pevtlist, epdp->ed_maxevents,
-	    (unsigned int *) &nevents, ts_p);
-
-	EVBASE_ACQUIRE_LOCK(base, th_base_lock);
-
-	if (res == -1) {
-		if (errno == EINTR || errno == EAGAIN) {
-			return (0);
-		} else if (errno == ETIME) {
-			if (nevents == 0)
-				return (0);
-		} else {
-			event_warn("port_getn");
-			return (-1);
-		}
-	}
-
-	event_debug(("%s: port_getn reports %d events", __func__, nevents));
-
-	for (i = 0; i < nevents; ++i) {
-		port_event_t *pevt = &pevtlist[i];
-		int fd = (int) pevt->portev_object;
-		struct fd_info *fdi = pevt->portev_user;
-		/*EVUTIL_ASSERT(evmap_io_get_fdinfo_(&base->io, fd) == fdi);*/
-
-		check_evportop(epdp);
-		check_event(pevt);
-		epdp->ed_pending[i] = fd;
-		fdi->pending_idx_plus_1 = i + 1;
-
-		/*
-		 * Figure out what kind of event it was
-		 * (because we have to pass this to the callback)
-		 */
-		res = 0;
-		if (pevt->portev_events & (POLLERR|POLLHUP)) {
-			res = EV_READ | EV_WRITE;
-		} else {
-			if (pevt->portev_events & POLLIN)
-				res |= EV_READ;
-			if (pevt->portev_events & POLLOUT)
-				res |= EV_WRITE;
-		}
-
-		/*
-		 * Check for the error situations or a hangup situation
-		 */
-		if (pevt->portev_events & (POLLERR|POLLHUP|POLLNVAL))
-			res |= EV_READ|EV_WRITE;
-
-		evmap_io_active_(base, fd, res);
-	} /* end of all events gotten */
-	epdp->ed_npending = nevents;
-
-	if (nevents == epdp->ed_maxevents &&
-	    epdp->ed_maxevents < MAX_EVENTS_PER_GETN) {
-		/* we used all the space this time.  We should be ready
-		 * for more events next time around. */
-		grow(epdp, epdp->ed_maxevents * 2);
-	}
-
-	check_evportop(epdp);
-
-	return (0);
-}
-
-
-/*
- * Adds the given event (so that you will be notified when it happens via
- * the callback function).
- */
-
-static int
-evport_add(struct event_base *base, int fd, short old, short events, void *p)
-{
-	struct evport_data *evpd = base->evbase;
-	struct fd_info *fdi = p;
-
-	check_evportop(evpd);
-
-	fdi->fdi_what |= events;
-
-	return reassociate(evpd, fdi, fd);
-}
-
-/*
- * Removes the given event from the list of events to wait for.
- */
-
-static int
-evport_del(struct event_base *base, int fd, short old, short events, void *p)
-{
-	struct evport_data *evpd = base->evbase;
-	struct fd_info *fdi = p;
-	int associated = ! fdi->pending_idx_plus_1;
-
-	check_evportop(evpd);
-
-	fdi->fdi_what &= ~(events &(EV_READ|EV_WRITE));
-
-	if (associated) {
-		if (!FDI_HAS_EVENTS(fdi) &&
-		    port_dissociate(evpd->ed_port, PORT_SOURCE_FD, fd) == -1) {
-			/*
-			 * Ignore EBADFD error the fd could have been closed
-			 * before event_del() was called.
-			 */
-			if (errno != EBADFD) {
-				event_warn("port_dissociate");
-				return (-1);
-			}
-		} else {
-			if (FDI_HAS_EVENTS(fdi)) {
-				return (reassociate(evpd, fdi, fd));
-			}
-		}
-	} else {
-		if ((fdi->fdi_what & (EV_READ|EV_WRITE)) == 0) {
-			const int i = fdi->pending_idx_plus_1 - 1;
-			EVUTIL_ASSERT(evpd->ed_pending[i] == fd);
-			evpd->ed_pending[i] = -1;
-			fdi->pending_idx_plus_1 = 0;
-		}
-	}
-	return 0;
-}
-
-
-static void
-evport_dealloc(struct event_base *base)
-{
-	struct evport_data *evpd = base->evbase;
-
-	evsig_dealloc_(base);
-
-	close(evpd->ed_port);
-
-	if (evpd->ed_pending)
-		mm_free(evpd->ed_pending);
-	if (evpd->ed_pevtlist)
-		mm_free(evpd->ed_pevtlist);
-
-	mm_free(evpd);
-}
-
-#endif /* EVENT__HAVE_EVENT_PORTS */