X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/4ebe9e295b974622f802229ca8e371ee6df9525a..0d2fcb8fc814d741c4d4a4ea2d63a02383b8526f:/ev_kqueue.c diff --git a/ev_kqueue.c b/ev_kqueue.c index afd3f9c..369d493 100644 --- a/ev_kqueue.c +++ b/ev_kqueue.c @@ -4,29 +4,37 @@ * Copyright (c) 2007 Marc Alexander Lehmann * All rights reserved. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Redistribution and use in source and binary forms, with or without modifica- + * tion, 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, 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 OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "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 COPYRIGHT - * OWNER OR CONTRIBUTORS 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. + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. */ #include @@ -39,8 +47,6 @@ void inline_speed kqueue_change (EV_P_ int fd, int filter, int flags, int fflags) { - struct kevent *ke; - ++kqueue_changecnt; array_needsize (struct kevent, kqueue_changes, kqueue_changemax, kqueue_changecnt, EMPTY2); @@ -83,7 +89,7 @@ kqueue_poll (EV_P_ ev_tstamp timeout) if (kqueue_changecnt > kqueue_eventmax) { ev_free (kqueue_events); - kqueue_eventmax = array_roundsize (struct kevent, kqueue_changecnt); + kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_changecnt); kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax); } @@ -92,7 +98,7 @@ kqueue_poll (EV_P_ ev_tstamp timeout) res = kevent (backend_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts); kqueue_changecnt = 0; - if (res < 0) + if (expect_false (res < 0)) { if (errno != EINTR) syserr ("(libev) kevent"); @@ -137,7 +143,7 @@ kqueue_poll (EV_P_ ev_tstamp timeout) if (expect_false (res == kqueue_eventmax)) { ev_free (kqueue_events); - kqueue_eventmax = array_roundsize (struct kevent, kqueue_eventmax << 1); + kqueue_eventmax = array_nextsize (sizeof (struct kevent), kqueue_eventmax, kqueue_eventmax + 1); kqueue_events = (struct kevent *)ev_malloc (sizeof (struct kevent) * kqueue_eventmax); } } @@ -145,16 +151,13 @@ kqueue_poll (EV_P_ ev_tstamp timeout) int inline_size kqueue_init (EV_P_ int flags) { - struct kevent ch, ev; - /* Initalize the kernel queue */ if ((backend_fd = kqueue ()) < 0) return 0; fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */ - /* fudge *might* be zero from the documentation, but bsd docs are notoriously wrong */ - backend_fudge = 1e-3; /* needed to compensate for kevent returning early */ + backend_fudge = 0.; backend_modify = kqueue_modify; backend_poll = kqueue_poll;