X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/e6e8e6f69de8027f07467fd43ebf55ac108eeb21..c12d1228a8089ed701ce994c8e2d9858d906a29d:/event.c diff --git a/event.c b/event.c index 14a06c2..714f345 100644 --- a/event.c +++ b/event.c @@ -4,45 +4,68 @@ * 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 #include -#include - -#include "event.h" - +#include + +#ifndef WIN32 +# include +#endif + +#ifdef EV_EVENT_H +# include EV_EVENT_H +#else +# include "event.h" +#endif + +#if EV_MULTIPLICITY +# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base +# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base +#else +# define dLOOPev +# define dLOOPbase +#endif + +/* never accessed, will always be cast from/to ev_loop */ struct event_base { int dummy; }; -static int x_actives; - -static struct event_base x_base, *x_cur; +static struct event_base *x_cur; static void tv_set (struct timeval *tv, ev_tstamp at) @@ -74,15 +97,28 @@ const char *event_get_method (void) void *event_init (void) { - if (ev_init (0)) - return x_cur = &x_base; +#if EV_MULTIPLICITY + if (x_cur) + x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO); + else + x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO); +#else + assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur)); - return 0; + x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO); +#endif + + return x_cur; } void event_base_free (struct event_base *base) { - /* nop */ + dLOOPbase; + +#if EV_MULTIPLICITY + if (ev_default_loop (EVFLAG_AUTO) != loop) + ev_loop_destroy (loop); +#endif } int event_dispatch (void) @@ -90,10 +126,12 @@ int event_dispatch (void) return event_base_dispatch (x_cur); } +#ifdef EV_STANDALONE void event_set_log_callback (event_log_cb cb) { /* nop */ } +#endif int event_loop (int flags) { @@ -102,161 +140,174 @@ int event_loop (int flags) int event_loopexit (struct timeval *tv) { - event_base_loopexit (x_cur, tv); + return event_base_loopexit (x_cur, tv); } static void x_cb (struct event *ev, int revents) { - if (ev_is_active (&ev->sig)) - { - ev_signal_stop (&ev->sig); - --x_actives; - } - - if (!(ev->ev_events & EV_PERSIST) && ev_is_active (&ev->io)) - { - ev_io_stop (&ev->io); - --x_actives; - } - revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL; - if (revents & EV_TIMEOUT) - --x_actives; - ev->ev_res = revents; - ev->ev_callback (ev->ev_fd, revents, ev->ev_arg); + ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg); } static void -x_cb_io (struct ev_io *w, int revents) +x_cb_sig (EV_P_ struct ev_signal *w, int revents) { - x_cb ((struct event *)(((char *)w) - offsetof (struct event, io)), revents); + struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig)); + + if (revents & EV_ERROR) + event_del (ev); + + x_cb (ev, revents); } static void -x_cb_to (struct ev_timer *w, int revents) +x_cb_io (EV_P_ struct ev_io *w, int revents) { - x_cb ((struct event *)(((char *)w) - offsetof (struct event, to)), revents); + struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io)); + + if ((revents & EV_ERROR) || !(ev->ev_events & EV_PERSIST)) + event_del (ev); + + x_cb (ev, revents); } static void -x_cb_sig (struct ev_signal *w, int revents) +x_cb_to (EV_P_ struct ev_timer *w, int revents) { - x_cb ((struct event *)(((char *)w) - offsetof (struct event, sig)), revents); + struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to)); + + event_del (ev); + + x_cb (ev, revents); } void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg) { - ev_watcher_init (&ev->io, x_cb_io); - ev_watcher_init (&ev->to, x_cb_to); - ev_watcher_init (&ev->sig, x_cb_sig); + if (events & EV_SIGNAL) + ev_init (&ev->iosig.sig, x_cb_sig); + else + ev_init (&ev->iosig.io, x_cb_io); + + ev_init (&ev->to, x_cb_to); - ev->ev_base = x_cur; + ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */ ev->ev_fd = fd; ev->ev_events = events; ev->ev_pri = 0; ev->ev_callback = cb; ev->ev_arg = arg; ev->ev_res = 0; + ev->ev_flags = EVLIST_INIT; } int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) { - event_base_once (x_cur, fd, events, cb, arg, tv); + return event_base_once (x_cur, fd, events, cb, arg, tv); } int event_add (struct event *ev, struct timeval *tv) { - if (tv) + dLOOPev; + + if (ev->ev_events & EV_SIGNAL) { - if (ev_is_active (&ev->to)) + if (!ev_is_active (&ev->iosig.sig)) { - ev_timer_stop (&ev->to); - --x_actives; - } + ev_signal_set (&ev->iosig.sig, ev->ev_fd); + ev_signal_start (EV_A_ &ev->iosig.sig); - ev_timer_set (&ev->to, tv_get (tv), 0.); - ev_timer_start (&ev->to); - ++x_actives; + ev->ev_flags |= EVLIST_SIGNAL; + } } - - if (ev->ev_events & (EV_READ | EV_WRITE)) + else if (ev->ev_events & (EV_READ | EV_WRITE)) { - if (ev_is_active (&ev->io)) + if (!ev_is_active (&ev->iosig.io)) { - ev_io_stop (&ev->io); - --x_actives; - } + ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); + ev_io_start (EV_A_ &ev->iosig.io); - ev_io_set (&ev->io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); - ev_io_start (&ev->io); - ++x_actives; + ev->ev_flags |= EVLIST_INSERTED; + } } - if (ev->ev_events & EV_SIGNAL) + if (tv) { - if (ev_is_active (&ev->sig)) - { - ev_signal_stop (&ev->sig); - --x_actives; - } - - ev_signal_set (&ev->sig, ev->ev_fd); - ev_signal_start (&ev->sig); - ++x_actives; + ev->to.repeat = tv_get (tv); + ev_timer_again (EV_A_ &ev->to); + ev->ev_flags |= EVLIST_TIMEOUT; } + else + { + ev_timer_stop (EV_A_ &ev->to); + ev->ev_flags &= ~EVLIST_TIMEOUT; + } + + ev->ev_flags |= EVLIST_ACTIVE; return 0; } int event_del (struct event *ev) { - if (ev_is_active (&ev->io)) - { - ev_io_stop (&ev->io); - --x_actives; - } + dLOOPev; + + if (ev->ev_events & EV_SIGNAL) + ev_signal_stop (EV_A_ &ev->iosig.sig); + else if (ev->ev_events & (EV_READ | EV_WRITE)) + ev_io_stop (EV_A_ &ev->iosig.io); if (ev_is_active (&ev->to)) - { - ev_timer_stop (&ev->to); - --x_actives; - } + ev_timer_stop (EV_A_ &ev->to); - if (ev_is_active (&ev->sig)) - { - ev_signal_stop (&ev->sig); - --x_actives; - } + ev->ev_flags = EVLIST_INIT; return 0; } -void event_active (struct event *ev, int fd, short events) +void event_active (struct event *ev, int res, short ncalls) { - /* unclear what this does, likely internal-use */ + dLOOPev; + + if (res & EV_TIMEOUT) + ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT); + + if (res & EV_SIGNAL) + ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL); + + if (res & (EV_READ | EV_WRITE)) + ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ | EV_WRITE)); } int event_pending (struct event *ev, short events, struct timeval *tv) { - short revents; + short revents = 0; + dLOOPev; + - if (ev->io.pending) - revents |= ev->ev_events & (EV_READ | EV_WRITE); + if (ev->ev_events & EV_SIGNAL) + { + /* sig */ + if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig)) + revents |= EV_SIGNAL; + } + else if (ev->ev_events & (EV_READ | EV_WRITE)) + { + /* io */ + if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io)) + revents |= ev->ev_events & (EV_READ | EV_WRITE); + } - if (ev->to.pending) + if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to)) { revents |= EV_TIMEOUT; if (tv) - tv_set (tv, ev_now); /* not sure if this is right :) */ + tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */ } - if (ev->sig.pending) - revents |= EV_SIGNAL; - return events & revents; } @@ -281,11 +332,9 @@ int event_base_set (struct event_base *base, struct event *ev) int event_base_loop (struct event_base *base, int flags) { - do - { - ev_loop (flags | EVLOOP_ONESHOT); - } - while (!(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) && x_actives && !ev_loop_done); + dLOOPbase; + + ev_loop (EV_A_ flags); return 0; } @@ -296,16 +345,21 @@ int event_base_dispatch (struct event_base *base) } static void -x_loopexit_cb (int revents, void *arg) +x_loopexit_cb (int revents, void *base) { - ev_loop_done = 2; + dLOOPbase; + + ev_unloop (EV_A_ EVUNLOOP_ONE); } int event_base_loopexit (struct event_base *base, struct timeval *tv) { ev_tstamp after = tv_get (tv); + dLOOPbase; - ev_once (-1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); + ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); + + return -1; } struct x_once @@ -318,15 +372,16 @@ struct x_once static void x_once_cb (int revents, void *arg) { - struct x_once *once = arg; + struct x_once *once = (struct x_once *)arg; - once->cb (once->fd, revents, once->arg); + once->cb (once->fd, (short)revents, once->arg); free (once); } int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) { - struct x_once *once = malloc (sizeof (struct x_once)); + struct x_once *once = (struct x_once *)malloc (sizeof (struct x_once)); + dLOOPbase; if (!once) return -1; @@ -335,13 +390,15 @@ int event_base_once (struct event_base *base, int fd, short events, void (*cb)(i once->cb = cb; once->arg = arg; - ev_once (fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once); + ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once); return 0; } int event_base_priority_init (struct event_base *base, int npri) { + /*dLOOPbase;*/ + return 0; }