X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/db2ba1d67df543c8e0dbfc578005b065983bdc94..3c11c7ffee9d72d3cf265dbb9fbefcee272b64ec:/ev.c?ds=sidebyside diff --git a/ev.c b/ev.c index 14213df..8a915a4 100644 --- a/ev.c +++ b/ev.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. */ #ifdef __cplusplus @@ -282,7 +290,11 @@ typedef ev_watcher *W; typedef ev_watcher_list *WL; typedef ev_watcher_time *WT; -static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ +#if EV_USE_MONOTONIC +/* sig_atomic_t is used to avoid per-thread variables or locking but still */ +/* giving it a reasonably high chance of working on typical architetcures */ +static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ +#endif #ifdef _WIN32 # include "ev_win32.c" @@ -590,7 +602,11 @@ fd_reify (EV_P) if (events) { unsigned long argp; - anfd->handle = _get_osfhandle (fd); + #ifdef EV_FD_TO_WIN32_HANDLE + anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); + #else + anfd->handle = _get_osfhandle (fd); + #endif assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); } #endif @@ -972,9 +988,13 @@ ev_recommended_backends (void) unsigned int ev_embeddable_backends (void) { + int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; + /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ - return EVBACKEND_KQUEUE - | EVBACKEND_PORT; + /* please fix it and tell me how to detect the fix */ + flags &= ~EVBACKEND_EPOLL; + + return flags; } unsigned int @@ -2266,7 +2286,7 @@ embed_io_cb (EV_P_ ev_io *io, int revents) if (ev_cb (w)) ev_feed_event (EV_A_ (W)w, EV_EMBED); else - ev_embed_sweep (loop, w); + ev_loop (w->other, EVLOOP_NONBLOCK); } static void @@ -2274,8 +2294,24 @@ embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) { ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); - fd_reify (w->other); + { + struct ev_loop *loop = w->other; + + while (fdchangecnt) + { + fd_reify (EV_A); + ev_loop (EV_A_ EVLOOP_NONBLOCK); + } + } +} + +#if 0 +static void +embed_idle_cb (EV_P_ ev_idle *idle, int revents) +{ + ev_idle_stop (EV_A_ idle); } +#endif void ev_embed_start (EV_P_ ev_embed *w) @@ -2296,6 +2332,8 @@ ev_embed_start (EV_P_ ev_embed *w) ev_set_priority (&w->prepare, EV_MINPRI); ev_prepare_start (EV_A_ &w->prepare); + /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ + ev_start (EV_A_ (W)w, 1); }