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/* |
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* libev event processing core, watcher management |
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* |
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* Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without modifica- |
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* tion, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* Alternatively, the contents of this file may be used under the terms of |
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* the GNU General Public License ("GPL") version 2 or any later version, |
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* in which case the provisions of the GPL are applicable instead of |
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* the above. If you wish to allow the use of your version of this file |
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* only under the terms of the GPL and not to allow others to use your |
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* version of this file under the BSD license, indicate your decision |
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* by deleting the provisions above and replace them with the notice |
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* and other provisions required by the GPL. If you do not delete the |
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* provisions above, a recipient may use your version of this file under |
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* either the BSD or the GPL. |
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*/ |
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|
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/* this big block deduces configuration from config.h */ |
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#ifndef EV_STANDALONE |
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# ifdef EV_CONFIG_H |
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# include EV_CONFIG_H |
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# else |
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# include "config.h" |
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# endif |
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|
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#if HAVE_FLOOR |
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# ifndef EV_USE_FLOOR |
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# define EV_USE_FLOOR 1 |
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# endif |
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#endif |
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|
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# if HAVE_CLOCK_SYSCALL |
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# ifndef EV_USE_CLOCK_SYSCALL |
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# define EV_USE_CLOCK_SYSCALL 1 |
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# ifndef EV_USE_REALTIME |
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# define EV_USE_REALTIME 0 |
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# endif |
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# ifndef EV_USE_MONOTONIC |
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# define EV_USE_MONOTONIC 1 |
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# endif |
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# endif |
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# elif !defined EV_USE_CLOCK_SYSCALL |
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# define EV_USE_CLOCK_SYSCALL 0 |
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# endif |
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|
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# if HAVE_CLOCK_GETTIME |
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# ifndef EV_USE_MONOTONIC |
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# define EV_USE_MONOTONIC 1 |
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# endif |
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# ifndef EV_USE_REALTIME |
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# define EV_USE_REALTIME 0 |
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# endif |
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# else |
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# ifndef EV_USE_MONOTONIC |
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# define EV_USE_MONOTONIC 0 |
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# endif |
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# ifndef EV_USE_REALTIME |
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# define EV_USE_REALTIME 0 |
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# endif |
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# endif |
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|
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# if HAVE_NANOSLEEP |
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# ifndef EV_USE_NANOSLEEP |
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# define EV_USE_NANOSLEEP EV_FEATURE_OS |
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# endif |
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# else |
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# undef EV_USE_NANOSLEEP |
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# define EV_USE_NANOSLEEP 0 |
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# endif |
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|
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# if HAVE_SELECT && HAVE_SYS_SELECT_H |
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# ifndef EV_USE_SELECT |
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# define EV_USE_SELECT EV_FEATURE_BACKENDS |
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# endif |
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# else |
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# undef EV_USE_SELECT |
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# define EV_USE_SELECT 0 |
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# endif |
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|
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# if HAVE_POLL && HAVE_POLL_H |
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# ifndef EV_USE_POLL |
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# define EV_USE_POLL EV_FEATURE_BACKENDS |
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# endif |
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# else |
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# undef EV_USE_POLL |
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# define EV_USE_POLL 0 |
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# endif |
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|
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# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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# ifndef EV_USE_EPOLL |
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# define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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# endif |
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# else |
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# undef EV_USE_EPOLL |
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# define EV_USE_EPOLL 0 |
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# endif |
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|
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# if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
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# ifndef EV_USE_KQUEUE |
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# define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
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# endif |
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# else |
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# undef EV_USE_KQUEUE |
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# define EV_USE_KQUEUE 0 |
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# endif |
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|
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# if HAVE_PORT_H && HAVE_PORT_CREATE |
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# ifndef EV_USE_PORT |
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# define EV_USE_PORT EV_FEATURE_BACKENDS |
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# endif |
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# else |
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# undef EV_USE_PORT |
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# define EV_USE_PORT 0 |
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# endif |
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|
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# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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# ifndef EV_USE_INOTIFY |
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# define EV_USE_INOTIFY EV_FEATURE_OS |
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# endif |
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# else |
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# undef EV_USE_INOTIFY |
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# define EV_USE_INOTIFY 0 |
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# endif |
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|
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# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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# ifndef EV_USE_SIGNALFD |
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# define EV_USE_SIGNALFD EV_FEATURE_OS |
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# endif |
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# else |
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# undef EV_USE_SIGNALFD |
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# define EV_USE_SIGNALFD 0 |
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# endif |
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|
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# if HAVE_EVENTFD |
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# ifndef EV_USE_EVENTFD |
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# define EV_USE_EVENTFD EV_FEATURE_OS |
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# endif |
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# else |
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# undef EV_USE_EVENTFD |
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# define EV_USE_EVENTFD 0 |
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# endif |
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|
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#endif |
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|
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#include <stdlib.h> |
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#include <string.h> |
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#include <fcntl.h> |
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#include <stddef.h> |
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|
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#include <stdio.h> |
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|
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#include <assert.h> |
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#include <errno.h> |
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#include <sys/types.h> |
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#include <time.h> |
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#include <limits.h> |
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|
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#include <signal.h> |
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|
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#ifdef EV_H |
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# include EV_H |
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#else |
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# include "ev.h" |
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#endif |
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|
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#if EV_NO_THREADS |
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# undef EV_NO_SMP |
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# define EV_NO_SMP 1 |
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# undef ECB_NO_THREADS |
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# define ECB_NO_THREADS 1 |
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#endif |
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#if EV_NO_SMP |
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# undef EV_NO_SMP |
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# define ECB_NO_SMP 1 |
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#endif |
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|
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#ifndef _WIN32 |
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# include <sys/time.h> |
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# include <sys/wait.h> |
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# include <unistd.h> |
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#else |
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# include <io.h> |
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# define WIN32_LEAN_AND_MEAN |
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# include <winsock2.h> |
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# include <windows.h> |
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# ifndef EV_SELECT_IS_WINSOCKET |
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# define EV_SELECT_IS_WINSOCKET 1 |
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# endif |
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# undef EV_AVOID_STDIO |
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#endif |
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|
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/* OS X, in its infinite idiocy, actually HARDCODES |
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* a limit of 1024 into their select. Where people have brains, |
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* OS X engineers apparently have a vacuum. Or maybe they were |
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* ordered to have a vacuum, or they do anything for money. |
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* This might help. Or not. |
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*/ |
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#define _DARWIN_UNLIMITED_SELECT 1 |
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|
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/* this block tries to deduce configuration from header-defined symbols and defaults */ |
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|
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/* try to deduce the maximum number of signals on this platform */ |
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#if defined EV_NSIG |
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/* use what's provided */ |
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#elif defined NSIG |
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# define EV_NSIG (NSIG) |
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#elif defined _NSIG |
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# define EV_NSIG (_NSIG) |
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#elif defined SIGMAX |
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# define EV_NSIG (SIGMAX+1) |
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#elif defined SIG_MAX |
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# define EV_NSIG (SIG_MAX+1) |
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#elif defined _SIG_MAX |
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# define EV_NSIG (_SIG_MAX+1) |
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#elif defined MAXSIG |
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# define EV_NSIG (MAXSIG+1) |
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#elif defined MAX_SIG |
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# define EV_NSIG (MAX_SIG+1) |
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#elif defined SIGARRAYSIZE |
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# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
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#elif defined _sys_nsig |
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# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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#else |
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# error "unable to find value for NSIG, please report" |
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/* to make it compile regardless, just remove the above line, */ |
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/* but consider reporting it, too! :) */ |
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# define EV_NSIG 65 |
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#endif |
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|
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#ifndef EV_USE_FLOOR |
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# define EV_USE_FLOOR 0 |
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#endif |
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|
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#ifndef EV_USE_CLOCK_SYSCALL |
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# if __linux && __GLIBC__ >= 2 |
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# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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# else |
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# define EV_USE_CLOCK_SYSCALL 0 |
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# endif |
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#endif |
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|
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#ifndef EV_USE_MONOTONIC |
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# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
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# define EV_USE_MONOTONIC EV_FEATURE_OS |
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# else |
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# define EV_USE_MONOTONIC 0 |
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# endif |
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#endif |
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|
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#ifndef EV_USE_REALTIME |
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# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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#endif |
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|
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#ifndef EV_USE_NANOSLEEP |
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# if _POSIX_C_SOURCE >= 199309L |
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# define EV_USE_NANOSLEEP EV_FEATURE_OS |
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# else |
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# define EV_USE_NANOSLEEP 0 |
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# endif |
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#endif |
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|
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#ifndef EV_USE_SELECT |
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# define EV_USE_SELECT EV_FEATURE_BACKENDS |
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#endif |
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|
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#ifndef EV_USE_POLL |
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# ifdef _WIN32 |
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# define EV_USE_POLL 0 |
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# else |
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# define EV_USE_POLL EV_FEATURE_BACKENDS |
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# endif |
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#endif |
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|
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#ifndef EV_USE_EPOLL |
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# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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# define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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# else |
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# define EV_USE_EPOLL 0 |
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# endif |
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#endif |
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|
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#ifndef EV_USE_KQUEUE |
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# define EV_USE_KQUEUE 0 |
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#endif |
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|
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#ifndef EV_USE_PORT |
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# define EV_USE_PORT 0 |
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#endif |
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|
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#ifndef EV_USE_INOTIFY |
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# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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# define EV_USE_INOTIFY EV_FEATURE_OS |
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# else |
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# define EV_USE_INOTIFY 0 |
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# endif |
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#endif |
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|
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#ifndef EV_PID_HASHSIZE |
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# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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#endif |
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|
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#ifndef EV_INOTIFY_HASHSIZE |
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# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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#endif |
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|
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#ifndef EV_USE_EVENTFD |
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# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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# define EV_USE_EVENTFD EV_FEATURE_OS |
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# else |
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# define EV_USE_EVENTFD 0 |
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# endif |
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#endif |
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|
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#ifndef EV_USE_SIGNALFD |
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# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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# define EV_USE_SIGNALFD EV_FEATURE_OS |
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# else |
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# define EV_USE_SIGNALFD 0 |
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# endif |
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#endif |
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|
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#if 0 /* debugging */ |
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# define EV_VERIFY 3 |
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# define EV_USE_4HEAP 1 |
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# define EV_HEAP_CACHE_AT 1 |
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#endif |
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|
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#ifndef EV_VERIFY |
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# define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
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#endif |
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|
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#ifndef EV_USE_4HEAP |
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# define EV_USE_4HEAP EV_FEATURE_DATA |
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#endif |
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|
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#ifndef EV_HEAP_CACHE_AT |
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# define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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#endif |
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|
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/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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/* which makes programs even slower. might work on other unices, too. */ |
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#if EV_USE_CLOCK_SYSCALL |
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# include <sys/syscall.h> |
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# ifdef SYS_clock_gettime |
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# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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# undef EV_USE_MONOTONIC |
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# define EV_USE_MONOTONIC 1 |
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# else |
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# undef EV_USE_CLOCK_SYSCALL |
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# define EV_USE_CLOCK_SYSCALL 0 |
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# endif |
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#endif |
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|
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/* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
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|
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#ifdef _AIX |
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/* AIX has a completely broken poll.h header */ |
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# undef EV_USE_POLL |
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# define EV_USE_POLL 0 |
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#endif |
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|
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#ifndef CLOCK_MONOTONIC |
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# undef EV_USE_MONOTONIC |
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# define EV_USE_MONOTONIC 0 |
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#endif |
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|
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#ifndef CLOCK_REALTIME |
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# undef EV_USE_REALTIME |
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# define EV_USE_REALTIME 0 |
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#endif |
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|
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#if !EV_STAT_ENABLE |
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# undef EV_USE_INOTIFY |
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# define EV_USE_INOTIFY 0 |
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#endif |
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|
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#if !EV_USE_NANOSLEEP |
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/* hp-ux has it in sys/time.h, which we unconditionally include above */ |
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# if !defined _WIN32 && !defined __hpux |
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# include <sys/select.h> |
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# endif |
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#endif |
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|
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#if EV_USE_INOTIFY |
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# include <sys/statfs.h> |
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# include <sys/inotify.h> |
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/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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# ifndef IN_DONT_FOLLOW |
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# undef EV_USE_INOTIFY |
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# define EV_USE_INOTIFY 0 |
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# endif |
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#endif |
415 |
|
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#if EV_USE_EVENTFD |
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/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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# include <stdint.h> |
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# ifndef EFD_NONBLOCK |
420 |
# define EFD_NONBLOCK O_NONBLOCK |
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# endif |
422 |
# ifndef EFD_CLOEXEC |
423 |
# ifdef O_CLOEXEC |
424 |
# define EFD_CLOEXEC O_CLOEXEC |
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# else |
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# define EFD_CLOEXEC 02000000 |
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# endif |
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# endif |
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EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
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#endif |
431 |
|
432 |
#if EV_USE_SIGNALFD |
433 |
/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
434 |
# include <stdint.h> |
435 |
# ifndef SFD_NONBLOCK |
436 |
# define SFD_NONBLOCK O_NONBLOCK |
437 |
# endif |
438 |
# ifndef SFD_CLOEXEC |
439 |
# ifdef O_CLOEXEC |
440 |
# define SFD_CLOEXEC O_CLOEXEC |
441 |
# else |
442 |
# define SFD_CLOEXEC 02000000 |
443 |
# endif |
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# endif |
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EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
446 |
|
447 |
struct signalfd_siginfo |
448 |
{ |
449 |
uint32_t ssi_signo; |
450 |
char pad[128 - sizeof (uint32_t)]; |
451 |
}; |
452 |
#endif |
453 |
|
454 |
/**/ |
455 |
|
456 |
#if EV_VERIFY >= 3 |
457 |
# define EV_FREQUENT_CHECK ev_verify (EV_A) |
458 |
#else |
459 |
# define EV_FREQUENT_CHECK do { } while (0) |
460 |
#endif |
461 |
|
462 |
/* |
463 |
* This is used to work around floating point rounding problems. |
464 |
* This value is good at least till the year 4000. |
465 |
*/ |
466 |
#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
467 |
/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
468 |
|
469 |
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
470 |
#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
471 |
|
472 |
#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
473 |
#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
474 |
|
475 |
/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
476 |
/* ECB.H BEGIN */ |
477 |
/* |
478 |
* libecb - http://software.schmorp.de/pkg/libecb |
479 |
* |
480 |
* Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
481 |
* Copyright (©) 2011 Emanuele Giaquinta |
482 |
* All rights reserved. |
483 |
* |
484 |
* Redistribution and use in source and binary forms, with or without modifica- |
485 |
* tion, are permitted provided that the following conditions are met: |
486 |
* |
487 |
* 1. Redistributions of source code must retain the above copyright notice, |
488 |
* this list of conditions and the following disclaimer. |
489 |
* |
490 |
* 2. Redistributions in binary form must reproduce the above copyright |
491 |
* notice, this list of conditions and the following disclaimer in the |
492 |
* documentation and/or other materials provided with the distribution. |
493 |
* |
494 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
495 |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
496 |
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
497 |
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
498 |
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
499 |
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
500 |
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
501 |
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
502 |
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
503 |
* OF THE POSSIBILITY OF SUCH DAMAGE. |
504 |
*/ |
505 |
|
506 |
#ifndef ECB_H |
507 |
#define ECB_H |
508 |
|
509 |
/* 16 bits major, 16 bits minor */ |
510 |
#define ECB_VERSION 0x00010001 |
511 |
|
512 |
#ifdef _WIN32 |
513 |
typedef signed char int8_t; |
514 |
typedef unsigned char uint8_t; |
515 |
typedef signed short int16_t; |
516 |
typedef unsigned short uint16_t; |
517 |
typedef signed int int32_t; |
518 |
typedef unsigned int uint32_t; |
519 |
#if __GNUC__ |
520 |
typedef signed long long int64_t; |
521 |
typedef unsigned long long uint64_t; |
522 |
#else /* _MSC_VER || __BORLANDC__ */ |
523 |
typedef signed __int64 int64_t; |
524 |
typedef unsigned __int64 uint64_t; |
525 |
#endif |
526 |
#ifdef _WIN64 |
527 |
#define ECB_PTRSIZE 8 |
528 |
typedef uint64_t uintptr_t; |
529 |
typedef int64_t intptr_t; |
530 |
#else |
531 |
#define ECB_PTRSIZE 4 |
532 |
typedef uint32_t uintptr_t; |
533 |
typedef int32_t intptr_t; |
534 |
#endif |
535 |
typedef intptr_t ptrdiff_t; |
536 |
#else |
537 |
#include <inttypes.h> |
538 |
#if UINTMAX_MAX > 0xffffffffU |
539 |
#define ECB_PTRSIZE 8 |
540 |
#else |
541 |
#define ECB_PTRSIZE 4 |
542 |
#endif |
543 |
#endif |
544 |
|
545 |
/* many compilers define _GNUC_ to some versions but then only implement |
546 |
* what their idiot authors think are the "more important" extensions, |
547 |
* causing enormous grief in return for some better fake benchmark numbers. |
548 |
* or so. |
549 |
* we try to detect these and simply assume they are not gcc - if they have |
550 |
* an issue with that they should have done it right in the first place. |
551 |
*/ |
552 |
#ifndef ECB_GCC_VERSION |
553 |
#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
554 |
#define ECB_GCC_VERSION(major,minor) 0 |
555 |
#else |
556 |
#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
557 |
#endif |
558 |
#endif |
559 |
|
560 |
#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
561 |
#define ECB_C99 (__STDC_VERSION__ >= 199901L) |
562 |
#define ECB_C11 (__STDC_VERSION__ >= 201112L) |
563 |
#define ECB_CPP (__cplusplus+0) |
564 |
#define ECB_CPP98 (__cplusplus >= 199711L) |
565 |
#define ECB_CPP11 (__cplusplus >= 201103L) |
566 |
|
567 |
/*****************************************************************************/ |
568 |
|
569 |
/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
570 |
/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
571 |
|
572 |
#if ECB_NO_THREADS |
573 |
#define ECB_NO_SMP 1 |
574 |
#endif |
575 |
|
576 |
#if ECB_NO_SMP |
577 |
#define ECB_MEMORY_FENCE do { } while (0) |
578 |
#endif |
579 |
|
580 |
#ifndef ECB_MEMORY_FENCE |
581 |
#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
582 |
#if __i386 || __i386__ |
583 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
584 |
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
585 |
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
586 |
#elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
587 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
588 |
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
589 |
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
590 |
#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
591 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
592 |
#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
593 |
|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
594 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
595 |
#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
596 |
|| defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
597 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
598 |
#elif __sparc || __sparc__ |
599 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
600 |
#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
601 |
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
602 |
#elif defined __s390__ || defined __s390x__ |
603 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
604 |
#elif defined __mips__ |
605 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
606 |
#elif defined __alpha__ |
607 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
608 |
#elif defined __hppa__ |
609 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
610 |
#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
611 |
#elif defined __ia64__ |
612 |
#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
613 |
#endif |
614 |
#endif |
615 |
#endif |
616 |
|
617 |
#ifndef ECB_MEMORY_FENCE |
618 |
#if ECB_GCC_VERSION(4,7) |
619 |
/* see comment below about the C11 memory model. in short - avoid */ |
620 |
#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
621 |
#elif defined __clang && __has_feature (cxx_atomic) |
622 |
/* see above */ |
623 |
#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
624 |
#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
625 |
#define ECB_MEMORY_FENCE __sync_synchronize () |
626 |
#elif _MSC_VER >= 1400 /* VC++ 2005 */ |
627 |
#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
628 |
#define ECB_MEMORY_FENCE _ReadWriteBarrier () |
629 |
#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
630 |
#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
631 |
#elif defined _WIN32 |
632 |
#include <WinNT.h> |
633 |
#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
634 |
#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
635 |
#include <mbarrier.h> |
636 |
#define ECB_MEMORY_FENCE __machine_rw_barrier () |
637 |
#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
638 |
#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
639 |
#elif __xlC__ |
640 |
#define ECB_MEMORY_FENCE __sync () |
641 |
#endif |
642 |
#endif |
643 |
|
644 |
#ifndef ECB_MEMORY_FENCE |
645 |
#if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
646 |
/* we assume that these memory fences work on all variables/all memory accesses, */ |
647 |
/* not just C11 atomics and atomic accesses */ |
648 |
#include <stdatomic.h> |
649 |
/* unfortunately, the C11 memory model seems to be very limited, and unable to express */ |
650 |
/* simple barrier semantics. That means we need to take out thor's hammer. */ |
651 |
#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
652 |
#endif |
653 |
#endif |
654 |
|
655 |
#ifndef ECB_MEMORY_FENCE |
656 |
#if !ECB_AVOID_PTHREADS |
657 |
/* |
658 |
* if you get undefined symbol references to pthread_mutex_lock, |
659 |
* or failure to find pthread.h, then you should implement |
660 |
* the ECB_MEMORY_FENCE operations for your cpu/compiler |
661 |
* OR provide pthread.h and link against the posix thread library |
662 |
* of your system. |
663 |
*/ |
664 |
#include <pthread.h> |
665 |
#define ECB_NEEDS_PTHREADS 1 |
666 |
#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
667 |
|
668 |
static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
669 |
#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
670 |
#endif |
671 |
#endif |
672 |
|
673 |
#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
674 |
#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
675 |
#endif |
676 |
|
677 |
#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
678 |
#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
679 |
#endif |
680 |
|
681 |
/*****************************************************************************/ |
682 |
|
683 |
#if __cplusplus |
684 |
#define ecb_inline static inline |
685 |
#elif ECB_GCC_VERSION(2,5) |
686 |
#define ecb_inline static __inline__ |
687 |
#elif ECB_C99 |
688 |
#define ecb_inline static inline |
689 |
#else |
690 |
#define ecb_inline static |
691 |
#endif |
692 |
|
693 |
#if ECB_GCC_VERSION(3,3) |
694 |
#define ecb_restrict __restrict__ |
695 |
#elif ECB_C99 |
696 |
#define ecb_restrict restrict |
697 |
#else |
698 |
#define ecb_restrict |
699 |
#endif |
700 |
|
701 |
typedef int ecb_bool; |
702 |
|
703 |
#define ECB_CONCAT_(a, b) a ## b |
704 |
#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
705 |
#define ECB_STRINGIFY_(a) # a |
706 |
#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
707 |
|
708 |
#define ecb_function_ ecb_inline |
709 |
|
710 |
#if ECB_GCC_VERSION(3,1) |
711 |
#define ecb_attribute(attrlist) __attribute__(attrlist) |
712 |
#define ecb_is_constant(expr) __builtin_constant_p (expr) |
713 |
#define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
714 |
#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
715 |
#else |
716 |
#define ecb_attribute(attrlist) |
717 |
#define ecb_is_constant(expr) 0 |
718 |
#define ecb_expect(expr,value) (expr) |
719 |
#define ecb_prefetch(addr,rw,locality) |
720 |
#endif |
721 |
|
722 |
/* no emulation for ecb_decltype */ |
723 |
#if ECB_GCC_VERSION(4,5) |
724 |
#define ecb_decltype(x) __decltype(x) |
725 |
#elif ECB_GCC_VERSION(3,0) |
726 |
#define ecb_decltype(x) __typeof(x) |
727 |
#endif |
728 |
|
729 |
#define ecb_noinline ecb_attribute ((__noinline__)) |
730 |
#define ecb_unused ecb_attribute ((__unused__)) |
731 |
#define ecb_const ecb_attribute ((__const__)) |
732 |
#define ecb_pure ecb_attribute ((__pure__)) |
733 |
|
734 |
#if ECB_C11 |
735 |
#define ecb_noreturn _Noreturn |
736 |
#else |
737 |
#define ecb_noreturn ecb_attribute ((__noreturn__)) |
738 |
#endif |
739 |
|
740 |
#if ECB_GCC_VERSION(4,3) |
741 |
#define ecb_artificial ecb_attribute ((__artificial__)) |
742 |
#define ecb_hot ecb_attribute ((__hot__)) |
743 |
#define ecb_cold ecb_attribute ((__cold__)) |
744 |
#else |
745 |
#define ecb_artificial |
746 |
#define ecb_hot |
747 |
#define ecb_cold |
748 |
#endif |
749 |
|
750 |
/* put around conditional expressions if you are very sure that the */ |
751 |
/* expression is mostly true or mostly false. note that these return */ |
752 |
/* booleans, not the expression. */ |
753 |
#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
754 |
#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
755 |
/* for compatibility to the rest of the world */ |
756 |
#define ecb_likely(expr) ecb_expect_true (expr) |
757 |
#define ecb_unlikely(expr) ecb_expect_false (expr) |
758 |
|
759 |
/* count trailing zero bits and count # of one bits */ |
760 |
#if ECB_GCC_VERSION(3,4) |
761 |
/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
762 |
#define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
763 |
#define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
764 |
#define ecb_ctz32(x) __builtin_ctz (x) |
765 |
#define ecb_ctz64(x) __builtin_ctzll (x) |
766 |
#define ecb_popcount32(x) __builtin_popcount (x) |
767 |
/* no popcountll */ |
768 |
#else |
769 |
ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
770 |
ecb_function_ int |
771 |
ecb_ctz32 (uint32_t x) |
772 |
{ |
773 |
int r = 0; |
774 |
|
775 |
x &= ~x + 1; /* this isolates the lowest bit */ |
776 |
|
777 |
#if ECB_branchless_on_i386 |
778 |
r += !!(x & 0xaaaaaaaa) << 0; |
779 |
r += !!(x & 0xcccccccc) << 1; |
780 |
r += !!(x & 0xf0f0f0f0) << 2; |
781 |
r += !!(x & 0xff00ff00) << 3; |
782 |
r += !!(x & 0xffff0000) << 4; |
783 |
#else |
784 |
if (x & 0xaaaaaaaa) r += 1; |
785 |
if (x & 0xcccccccc) r += 2; |
786 |
if (x & 0xf0f0f0f0) r += 4; |
787 |
if (x & 0xff00ff00) r += 8; |
788 |
if (x & 0xffff0000) r += 16; |
789 |
#endif |
790 |
|
791 |
return r; |
792 |
} |
793 |
|
794 |
ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
795 |
ecb_function_ int |
796 |
ecb_ctz64 (uint64_t x) |
797 |
{ |
798 |
int shift = x & 0xffffffffU ? 0 : 32; |
799 |
return ecb_ctz32 (x >> shift) + shift; |
800 |
} |
801 |
|
802 |
ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
803 |
ecb_function_ int |
804 |
ecb_popcount32 (uint32_t x) |
805 |
{ |
806 |
x -= (x >> 1) & 0x55555555; |
807 |
x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
808 |
x = ((x >> 4) + x) & 0x0f0f0f0f; |
809 |
x *= 0x01010101; |
810 |
|
811 |
return x >> 24; |
812 |
} |
813 |
|
814 |
ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
815 |
ecb_function_ int ecb_ld32 (uint32_t x) |
816 |
{ |
817 |
int r = 0; |
818 |
|
819 |
if (x >> 16) { x >>= 16; r += 16; } |
820 |
if (x >> 8) { x >>= 8; r += 8; } |
821 |
if (x >> 4) { x >>= 4; r += 4; } |
822 |
if (x >> 2) { x >>= 2; r += 2; } |
823 |
if (x >> 1) { r += 1; } |
824 |
|
825 |
return r; |
826 |
} |
827 |
|
828 |
ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
829 |
ecb_function_ int ecb_ld64 (uint64_t x) |
830 |
{ |
831 |
int r = 0; |
832 |
|
833 |
if (x >> 32) { x >>= 32; r += 32; } |
834 |
|
835 |
return r + ecb_ld32 (x); |
836 |
} |
837 |
#endif |
838 |
|
839 |
ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
840 |
ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
841 |
ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
842 |
ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
843 |
|
844 |
ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
845 |
ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
846 |
{ |
847 |
return ( (x * 0x0802U & 0x22110U) |
848 |
| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
849 |
} |
850 |
|
851 |
ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
852 |
ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
853 |
{ |
854 |
x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
855 |
x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
856 |
x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
857 |
x = ( x >> 8 ) | ( x << 8); |
858 |
|
859 |
return x; |
860 |
} |
861 |
|
862 |
ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
863 |
ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
864 |
{ |
865 |
x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
866 |
x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
867 |
x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
868 |
x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
869 |
x = ( x >> 16 ) | ( x << 16); |
870 |
|
871 |
return x; |
872 |
} |
873 |
|
874 |
/* popcount64 is only available on 64 bit cpus as gcc builtin */ |
875 |
/* so for this version we are lazy */ |
876 |
ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
877 |
ecb_function_ int |
878 |
ecb_popcount64 (uint64_t x) |
879 |
{ |
880 |
return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
881 |
} |
882 |
|
883 |
ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
884 |
ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
885 |
ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
886 |
ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
887 |
ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
888 |
ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
889 |
ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
890 |
ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
891 |
|
892 |
ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
893 |
ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
894 |
ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
895 |
ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
896 |
ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
897 |
ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
898 |
ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
899 |
ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
900 |
|
901 |
#if ECB_GCC_VERSION(4,3) |
902 |
#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
903 |
#define ecb_bswap32(x) __builtin_bswap32 (x) |
904 |
#define ecb_bswap64(x) __builtin_bswap64 (x) |
905 |
#else |
906 |
ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
907 |
ecb_function_ uint16_t |
908 |
ecb_bswap16 (uint16_t x) |
909 |
{ |
910 |
return ecb_rotl16 (x, 8); |
911 |
} |
912 |
|
913 |
ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
914 |
ecb_function_ uint32_t |
915 |
ecb_bswap32 (uint32_t x) |
916 |
{ |
917 |
return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
918 |
} |
919 |
|
920 |
ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
921 |
ecb_function_ uint64_t |
922 |
ecb_bswap64 (uint64_t x) |
923 |
{ |
924 |
return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
925 |
} |
926 |
#endif |
927 |
|
928 |
#if ECB_GCC_VERSION(4,5) |
929 |
#define ecb_unreachable() __builtin_unreachable () |
930 |
#else |
931 |
/* this seems to work fine, but gcc always emits a warning for it :/ */ |
932 |
ecb_inline void ecb_unreachable (void) ecb_noreturn; |
933 |
ecb_inline void ecb_unreachable (void) { } |
934 |
#endif |
935 |
|
936 |
/* try to tell the compiler that some condition is definitely true */ |
937 |
#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
938 |
|
939 |
ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
940 |
ecb_inline unsigned char |
941 |
ecb_byteorder_helper (void) |
942 |
{ |
943 |
const uint32_t u = 0x11223344; |
944 |
return *(unsigned char *)&u; |
945 |
} |
946 |
|
947 |
ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
948 |
ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
949 |
ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
950 |
ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
951 |
|
952 |
#if ECB_GCC_VERSION(3,0) || ECB_C99 |
953 |
#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
954 |
#else |
955 |
#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
956 |
#endif |
957 |
|
958 |
#if __cplusplus |
959 |
template<typename T> |
960 |
static inline T ecb_div_rd (T val, T div) |
961 |
{ |
962 |
return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
963 |
} |
964 |
template<typename T> |
965 |
static inline T ecb_div_ru (T val, T div) |
966 |
{ |
967 |
return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
968 |
} |
969 |
#else |
970 |
#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
971 |
#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
972 |
#endif |
973 |
|
974 |
#if ecb_cplusplus_does_not_suck |
975 |
/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
976 |
template<typename T, int N> |
977 |
static inline int ecb_array_length (const T (&arr)[N]) |
978 |
{ |
979 |
return N; |
980 |
} |
981 |
#else |
982 |
#define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
983 |
#endif |
984 |
|
985 |
#endif |
986 |
|
987 |
/* ECB.H END */ |
988 |
|
989 |
#if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
990 |
/* if your architecture doesn't need memory fences, e.g. because it is |
991 |
* single-cpu/core, or if you use libev in a project that doesn't use libev |
992 |
* from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
993 |
* libev, in which cases the memory fences become nops. |
994 |
* alternatively, you can remove this #error and link against libpthread, |
995 |
* which will then provide the memory fences. |
996 |
*/ |
997 |
# error "memory fences not defined for your architecture, please report" |
998 |
#endif |
999 |
|
1000 |
#ifndef ECB_MEMORY_FENCE |
1001 |
# define ECB_MEMORY_FENCE do { } while (0) |
1002 |
# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
1003 |
# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
1004 |
#endif |
1005 |
|
1006 |
#define expect_false(cond) ecb_expect_false (cond) |
1007 |
#define expect_true(cond) ecb_expect_true (cond) |
1008 |
#define noinline ecb_noinline |
1009 |
|
1010 |
#define inline_size ecb_inline |
1011 |
|
1012 |
#if EV_FEATURE_CODE |
1013 |
# define inline_speed ecb_inline |
1014 |
#else |
1015 |
# define inline_speed static noinline |
1016 |
#endif |
1017 |
|
1018 |
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
1019 |
|
1020 |
#if EV_MINPRI == EV_MAXPRI |
1021 |
# define ABSPRI(w) (((W)w), 0) |
1022 |
#else |
1023 |
# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
1024 |
#endif |
1025 |
|
1026 |
#define EMPTY /* required for microsofts broken pseudo-c compiler */ |
1027 |
#define EMPTY2(a,b) /* used to suppress some warnings */ |
1028 |
|
1029 |
typedef ev_watcher *W; |
1030 |
typedef ev_watcher_list *WL; |
1031 |
typedef ev_watcher_time *WT; |
1032 |
|
1033 |
#define ev_active(w) ((W)(w))->active |
1034 |
#define ev_at(w) ((WT)(w))->at |
1035 |
|
1036 |
#if EV_USE_REALTIME |
1037 |
/* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
1038 |
/* giving it a reasonably high chance of working on typical architectures */ |
1039 |
static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
1040 |
#endif |
1041 |
|
1042 |
#if EV_USE_MONOTONIC |
1043 |
static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
1044 |
#endif |
1045 |
|
1046 |
#ifndef EV_FD_TO_WIN32_HANDLE |
1047 |
# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
1048 |
#endif |
1049 |
#ifndef EV_WIN32_HANDLE_TO_FD |
1050 |
# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
1051 |
#endif |
1052 |
#ifndef EV_WIN32_CLOSE_FD |
1053 |
# define EV_WIN32_CLOSE_FD(fd) close (fd) |
1054 |
#endif |
1055 |
|
1056 |
#ifdef _WIN32 |
1057 |
# include "ev_win32.c" |
1058 |
#endif |
1059 |
|
1060 |
/*****************************************************************************/ |
1061 |
|
1062 |
/* define a suitable floor function (only used by periodics atm) */ |
1063 |
|
1064 |
#if EV_USE_FLOOR |
1065 |
# include <math.h> |
1066 |
# define ev_floor(v) floor (v) |
1067 |
#else |
1068 |
|
1069 |
#include <float.h> |
1070 |
|
1071 |
/* a floor() replacement function, should be independent of ev_tstamp type */ |
1072 |
static ev_tstamp noinline |
1073 |
ev_floor (ev_tstamp v) |
1074 |
{ |
1075 |
/* the choice of shift factor is not terribly important */ |
1076 |
#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
1077 |
const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
1078 |
#else |
1079 |
const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
1080 |
#endif |
1081 |
|
1082 |
/* argument too large for an unsigned long? */ |
1083 |
if (expect_false (v >= shift)) |
1084 |
{ |
1085 |
ev_tstamp f; |
1086 |
|
1087 |
if (v == v - 1.) |
1088 |
return v; /* very large number */ |
1089 |
|
1090 |
f = shift * ev_floor (v * (1. / shift)); |
1091 |
return f + ev_floor (v - f); |
1092 |
} |
1093 |
|
1094 |
/* special treatment for negative args? */ |
1095 |
if (expect_false (v < 0.)) |
1096 |
{ |
1097 |
ev_tstamp f = -ev_floor (-v); |
1098 |
|
1099 |
return f - (f == v ? 0 : 1); |
1100 |
} |
1101 |
|
1102 |
/* fits into an unsigned long */ |
1103 |
return (unsigned long)v; |
1104 |
} |
1105 |
|
1106 |
#endif |
1107 |
|
1108 |
/*****************************************************************************/ |
1109 |
|
1110 |
#ifdef __linux |
1111 |
# include <sys/utsname.h> |
1112 |
#endif |
1113 |
|
1114 |
static unsigned int noinline ecb_cold |
1115 |
ev_linux_version (void) |
1116 |
{ |
1117 |
#ifdef __linux |
1118 |
unsigned int v = 0; |
1119 |
struct utsname buf; |
1120 |
int i; |
1121 |
char *p = buf.release; |
1122 |
|
1123 |
if (uname (&buf)) |
1124 |
return 0; |
1125 |
|
1126 |
for (i = 3+1; --i; ) |
1127 |
{ |
1128 |
unsigned int c = 0; |
1129 |
|
1130 |
for (;;) |
1131 |
{ |
1132 |
if (*p >= '0' && *p <= '9') |
1133 |
c = c * 10 + *p++ - '0'; |
1134 |
else |
1135 |
{ |
1136 |
p += *p == '.'; |
1137 |
break; |
1138 |
} |
1139 |
} |
1140 |
|
1141 |
v = (v << 8) | c; |
1142 |
} |
1143 |
|
1144 |
return v; |
1145 |
#else |
1146 |
return 0; |
1147 |
#endif |
1148 |
} |
1149 |
|
1150 |
/*****************************************************************************/ |
1151 |
|
1152 |
#if EV_AVOID_STDIO |
1153 |
static void noinline ecb_cold |
1154 |
ev_printerr (const char *msg) |
1155 |
{ |
1156 |
write (STDERR_FILENO, msg, strlen (msg)); |
1157 |
} |
1158 |
#endif |
1159 |
|
1160 |
static void (*syserr_cb)(const char *msg) EV_THROW; |
1161 |
|
1162 |
void ecb_cold |
1163 |
ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW |
1164 |
{ |
1165 |
syserr_cb = cb; |
1166 |
} |
1167 |
|
1168 |
static void noinline ecb_cold |
1169 |
ev_syserr (const char *msg) |
1170 |
{ |
1171 |
if (!msg) |
1172 |
msg = "(libev) system error"; |
1173 |
|
1174 |
if (syserr_cb) |
1175 |
syserr_cb (msg); |
1176 |
else |
1177 |
{ |
1178 |
#if EV_AVOID_STDIO |
1179 |
ev_printerr (msg); |
1180 |
ev_printerr (": "); |
1181 |
ev_printerr (strerror (errno)); |
1182 |
ev_printerr ("\n"); |
1183 |
#else |
1184 |
perror (msg); |
1185 |
#endif |
1186 |
abort (); |
1187 |
} |
1188 |
} |
1189 |
|
1190 |
static void * |
1191 |
ev_realloc_emul (void *ptr, long size) EV_THROW |
1192 |
{ |
1193 |
#if __GLIBC__ |
1194 |
return realloc (ptr, size); |
1195 |
#else |
1196 |
/* some systems, notably openbsd and darwin, fail to properly |
1197 |
* implement realloc (x, 0) (as required by both ansi c-89 and |
1198 |
* the single unix specification, so work around them here. |
1199 |
*/ |
1200 |
|
1201 |
if (size) |
1202 |
return realloc (ptr, size); |
1203 |
|
1204 |
free (ptr); |
1205 |
return 0; |
1206 |
#endif |
1207 |
} |
1208 |
|
1209 |
static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
1210 |
|
1211 |
void ecb_cold |
1212 |
ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW |
1213 |
{ |
1214 |
alloc = cb; |
1215 |
} |
1216 |
|
1217 |
inline_speed void * |
1218 |
ev_realloc (void *ptr, long size) |
1219 |
{ |
1220 |
ptr = alloc (ptr, size); |
1221 |
|
1222 |
if (!ptr && size) |
1223 |
{ |
1224 |
#if EV_AVOID_STDIO |
1225 |
ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
1226 |
#else |
1227 |
fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
1228 |
#endif |
1229 |
abort (); |
1230 |
} |
1231 |
|
1232 |
return ptr; |
1233 |
} |
1234 |
|
1235 |
#define ev_malloc(size) ev_realloc (0, (size)) |
1236 |
#define ev_free(ptr) ev_realloc ((ptr), 0) |
1237 |
|
1238 |
/*****************************************************************************/ |
1239 |
|
1240 |
/* set in reify when reification needed */ |
1241 |
#define EV_ANFD_REIFY 1 |
1242 |
|
1243 |
/* file descriptor info structure */ |
1244 |
typedef struct |
1245 |
{ |
1246 |
WL head; |
1247 |
unsigned char events; /* the events watched for */ |
1248 |
unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
1249 |
unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
1250 |
unsigned char unused; |
1251 |
#if EV_USE_EPOLL |
1252 |
unsigned int egen; /* generation counter to counter epoll bugs */ |
1253 |
#endif |
1254 |
#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
1255 |
SOCKET handle; |
1256 |
#endif |
1257 |
#if EV_USE_IOCP |
1258 |
OVERLAPPED or, ow; |
1259 |
#endif |
1260 |
} ANFD; |
1261 |
|
1262 |
/* stores the pending event set for a given watcher */ |
1263 |
typedef struct |
1264 |
{ |
1265 |
W w; |
1266 |
int events; /* the pending event set for the given watcher */ |
1267 |
} ANPENDING; |
1268 |
|
1269 |
#if EV_USE_INOTIFY |
1270 |
/* hash table entry per inotify-id */ |
1271 |
typedef struct |
1272 |
{ |
1273 |
WL head; |
1274 |
} ANFS; |
1275 |
#endif |
1276 |
|
1277 |
/* Heap Entry */ |
1278 |
#if EV_HEAP_CACHE_AT |
1279 |
/* a heap element */ |
1280 |
typedef struct { |
1281 |
ev_tstamp at; |
1282 |
WT w; |
1283 |
} ANHE; |
1284 |
|
1285 |
#define ANHE_w(he) (he).w /* access watcher, read-write */ |
1286 |
#define ANHE_at(he) (he).at /* access cached at, read-only */ |
1287 |
#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
1288 |
#else |
1289 |
/* a heap element */ |
1290 |
typedef WT ANHE; |
1291 |
|
1292 |
#define ANHE_w(he) (he) |
1293 |
#define ANHE_at(he) (he)->at |
1294 |
#define ANHE_at_cache(he) |
1295 |
#endif |
1296 |
|
1297 |
#if EV_MULTIPLICITY |
1298 |
|
1299 |
struct ev_loop |
1300 |
{ |
1301 |
ev_tstamp ev_rt_now; |
1302 |
#define ev_rt_now ((loop)->ev_rt_now) |
1303 |
#define VAR(name,decl) decl; |
1304 |
#include "ev_vars.h" |
1305 |
#undef VAR |
1306 |
}; |
1307 |
#include "ev_wrap.h" |
1308 |
|
1309 |
static struct ev_loop default_loop_struct; |
1310 |
EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
1311 |
|
1312 |
#else |
1313 |
|
1314 |
EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
1315 |
#define VAR(name,decl) static decl; |
1316 |
#include "ev_vars.h" |
1317 |
#undef VAR |
1318 |
|
1319 |
static int ev_default_loop_ptr; |
1320 |
|
1321 |
#endif |
1322 |
|
1323 |
#if EV_FEATURE_API |
1324 |
# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
1325 |
# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
1326 |
# define EV_INVOKE_PENDING invoke_cb (EV_A) |
1327 |
#else |
1328 |
# define EV_RELEASE_CB (void)0 |
1329 |
# define EV_ACQUIRE_CB (void)0 |
1330 |
# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
1331 |
#endif |
1332 |
|
1333 |
#define EVBREAK_RECURSE 0x80 |
1334 |
|
1335 |
/*****************************************************************************/ |
1336 |
|
1337 |
#ifndef EV_HAVE_EV_TIME |
1338 |
ev_tstamp |
1339 |
ev_time (void) EV_THROW |
1340 |
{ |
1341 |
#if EV_USE_REALTIME |
1342 |
if (expect_true (have_realtime)) |
1343 |
{ |
1344 |
struct timespec ts; |
1345 |
clock_gettime (CLOCK_REALTIME, &ts); |
1346 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
1347 |
} |
1348 |
#endif |
1349 |
|
1350 |
struct timeval tv; |
1351 |
gettimeofday (&tv, 0); |
1352 |
return tv.tv_sec + tv.tv_usec * 1e-6; |
1353 |
} |
1354 |
#endif |
1355 |
|
1356 |
inline_size ev_tstamp |
1357 |
get_clock (void) |
1358 |
{ |
1359 |
#if EV_USE_MONOTONIC |
1360 |
if (expect_true (have_monotonic)) |
1361 |
{ |
1362 |
struct timespec ts; |
1363 |
clock_gettime (CLOCK_MONOTONIC, &ts); |
1364 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
1365 |
} |
1366 |
#endif |
1367 |
|
1368 |
return ev_time (); |
1369 |
} |
1370 |
|
1371 |
#if EV_MULTIPLICITY |
1372 |
ev_tstamp |
1373 |
ev_now (EV_P) EV_THROW |
1374 |
{ |
1375 |
return ev_rt_now; |
1376 |
} |
1377 |
#endif |
1378 |
|
1379 |
void |
1380 |
ev_sleep (ev_tstamp delay) EV_THROW |
1381 |
{ |
1382 |
if (delay > 0.) |
1383 |
{ |
1384 |
#if EV_USE_NANOSLEEP |
1385 |
struct timespec ts; |
1386 |
|
1387 |
EV_TS_SET (ts, delay); |
1388 |
nanosleep (&ts, 0); |
1389 |
#elif defined _WIN32 |
1390 |
Sleep ((unsigned long)(delay * 1e3)); |
1391 |
#else |
1392 |
struct timeval tv; |
1393 |
|
1394 |
/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
1395 |
/* something not guaranteed by newer posix versions, but guaranteed */ |
1396 |
/* by older ones */ |
1397 |
EV_TV_SET (tv, delay); |
1398 |
select (0, 0, 0, 0, &tv); |
1399 |
#endif |
1400 |
} |
1401 |
} |
1402 |
|
1403 |
/*****************************************************************************/ |
1404 |
|
1405 |
#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
1406 |
|
1407 |
/* find a suitable new size for the given array, */ |
1408 |
/* hopefully by rounding to a nice-to-malloc size */ |
1409 |
inline_size int |
1410 |
array_nextsize (int elem, int cur, int cnt) |
1411 |
{ |
1412 |
int ncur = cur + 1; |
1413 |
|
1414 |
do |
1415 |
ncur <<= 1; |
1416 |
while (cnt > ncur); |
1417 |
|
1418 |
/* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
1419 |
if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
1420 |
{ |
1421 |
ncur *= elem; |
1422 |
ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
1423 |
ncur = ncur - sizeof (void *) * 4; |
1424 |
ncur /= elem; |
1425 |
} |
1426 |
|
1427 |
return ncur; |
1428 |
} |
1429 |
|
1430 |
static void * noinline ecb_cold |
1431 |
array_realloc (int elem, void *base, int *cur, int cnt) |
1432 |
{ |
1433 |
*cur = array_nextsize (elem, *cur, cnt); |
1434 |
return ev_realloc (base, elem * *cur); |
1435 |
} |
1436 |
|
1437 |
#define array_init_zero(base,count) \ |
1438 |
memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1439 |
|
1440 |
#define array_needsize(type,base,cur,cnt,init) \ |
1441 |
if (expect_false ((cnt) > (cur))) \ |
1442 |
{ \ |
1443 |
int ecb_unused ocur_ = (cur); \ |
1444 |
(base) = (type *)array_realloc \ |
1445 |
(sizeof (type), (base), &(cur), (cnt)); \ |
1446 |
init ((base) + (ocur_), (cur) - ocur_); \ |
1447 |
} |
1448 |
|
1449 |
#if 0 |
1450 |
#define array_slim(type,stem) \ |
1451 |
if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
1452 |
{ \ |
1453 |
stem ## max = array_roundsize (stem ## cnt >> 1); \ |
1454 |
base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
1455 |
fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
1456 |
} |
1457 |
#endif |
1458 |
|
1459 |
#define array_free(stem, idx) \ |
1460 |
ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
1461 |
|
1462 |
/*****************************************************************************/ |
1463 |
|
1464 |
/* dummy callback for pending events */ |
1465 |
static void noinline |
1466 |
pendingcb (EV_P_ ev_prepare *w, int revents) |
1467 |
{ |
1468 |
} |
1469 |
|
1470 |
void noinline |
1471 |
ev_feed_event (EV_P_ void *w, int revents) EV_THROW |
1472 |
{ |
1473 |
W w_ = (W)w; |
1474 |
int pri = ABSPRI (w_); |
1475 |
|
1476 |
if (expect_false (w_->pending)) |
1477 |
pendings [pri][w_->pending - 1].events |= revents; |
1478 |
else |
1479 |
{ |
1480 |
w_->pending = ++pendingcnt [pri]; |
1481 |
array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
1482 |
pendings [pri][w_->pending - 1].w = w_; |
1483 |
pendings [pri][w_->pending - 1].events = revents; |
1484 |
} |
1485 |
|
1486 |
pendingpri = NUMPRI - 1; |
1487 |
} |
1488 |
|
1489 |
inline_speed void |
1490 |
feed_reverse (EV_P_ W w) |
1491 |
{ |
1492 |
array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
1493 |
rfeeds [rfeedcnt++] = w; |
1494 |
} |
1495 |
|
1496 |
inline_size void |
1497 |
feed_reverse_done (EV_P_ int revents) |
1498 |
{ |
1499 |
do |
1500 |
ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
1501 |
while (rfeedcnt); |
1502 |
} |
1503 |
|
1504 |
inline_speed void |
1505 |
queue_events (EV_P_ W *events, int eventcnt, int type) |
1506 |
{ |
1507 |
int i; |
1508 |
|
1509 |
for (i = 0; i < eventcnt; ++i) |
1510 |
ev_feed_event (EV_A_ events [i], type); |
1511 |
} |
1512 |
|
1513 |
/*****************************************************************************/ |
1514 |
|
1515 |
inline_speed void |
1516 |
fd_event_nocheck (EV_P_ int fd, int revents) |
1517 |
{ |
1518 |
ANFD *anfd = anfds + fd; |
1519 |
ev_io *w; |
1520 |
|
1521 |
for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1522 |
{ |
1523 |
int ev = w->events & revents; |
1524 |
|
1525 |
if (ev) |
1526 |
ev_feed_event (EV_A_ (W)w, ev); |
1527 |
} |
1528 |
} |
1529 |
|
1530 |
/* do not submit kernel events for fds that have reify set */ |
1531 |
/* because that means they changed while we were polling for new events */ |
1532 |
inline_speed void |
1533 |
fd_event (EV_P_ int fd, int revents) |
1534 |
{ |
1535 |
ANFD *anfd = anfds + fd; |
1536 |
|
1537 |
if (expect_true (!anfd->reify)) |
1538 |
fd_event_nocheck (EV_A_ fd, revents); |
1539 |
} |
1540 |
|
1541 |
void |
1542 |
ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW |
1543 |
{ |
1544 |
if (fd >= 0 && fd < anfdmax) |
1545 |
fd_event_nocheck (EV_A_ fd, revents); |
1546 |
} |
1547 |
|
1548 |
/* make sure the external fd watch events are in-sync */ |
1549 |
/* with the kernel/libev internal state */ |
1550 |
inline_size void |
1551 |
fd_reify (EV_P) |
1552 |
{ |
1553 |
int i; |
1554 |
|
1555 |
#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
1556 |
for (i = 0; i < fdchangecnt; ++i) |
1557 |
{ |
1558 |
int fd = fdchanges [i]; |
1559 |
ANFD *anfd = anfds + fd; |
1560 |
|
1561 |
if (anfd->reify & EV__IOFDSET && anfd->head) |
1562 |
{ |
1563 |
SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
1564 |
|
1565 |
if (handle != anfd->handle) |
1566 |
{ |
1567 |
unsigned long arg; |
1568 |
|
1569 |
assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
1570 |
|
1571 |
/* handle changed, but fd didn't - we need to do it in two steps */ |
1572 |
backend_modify (EV_A_ fd, anfd->events, 0); |
1573 |
anfd->events = 0; |
1574 |
anfd->handle = handle; |
1575 |
} |
1576 |
} |
1577 |
} |
1578 |
#endif |
1579 |
|
1580 |
for (i = 0; i < fdchangecnt; ++i) |
1581 |
{ |
1582 |
int fd = fdchanges [i]; |
1583 |
ANFD *anfd = anfds + fd; |
1584 |
ev_io *w; |
1585 |
|
1586 |
unsigned char o_events = anfd->events; |
1587 |
unsigned char o_reify = anfd->reify; |
1588 |
|
1589 |
anfd->reify = 0; |
1590 |
|
1591 |
/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
1592 |
{ |
1593 |
anfd->events = 0; |
1594 |
|
1595 |
for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1596 |
anfd->events |= (unsigned char)w->events; |
1597 |
|
1598 |
if (o_events != anfd->events) |
1599 |
o_reify = EV__IOFDSET; /* actually |= */ |
1600 |
} |
1601 |
|
1602 |
if (o_reify & EV__IOFDSET) |
1603 |
backend_modify (EV_A_ fd, o_events, anfd->events); |
1604 |
} |
1605 |
|
1606 |
fdchangecnt = 0; |
1607 |
} |
1608 |
|
1609 |
/* something about the given fd changed */ |
1610 |
inline_size void |
1611 |
fd_change (EV_P_ int fd, int flags) |
1612 |
{ |
1613 |
unsigned char reify = anfds [fd].reify; |
1614 |
anfds [fd].reify |= flags; |
1615 |
|
1616 |
if (expect_true (!reify)) |
1617 |
{ |
1618 |
++fdchangecnt; |
1619 |
array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
1620 |
fdchanges [fdchangecnt - 1] = fd; |
1621 |
} |
1622 |
} |
1623 |
|
1624 |
/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1625 |
inline_speed void ecb_cold |
1626 |
fd_kill (EV_P_ int fd) |
1627 |
{ |
1628 |
ev_io *w; |
1629 |
|
1630 |
while ((w = (ev_io *)anfds [fd].head)) |
1631 |
{ |
1632 |
ev_io_stop (EV_A_ w); |
1633 |
ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1634 |
} |
1635 |
} |
1636 |
|
1637 |
/* check whether the given fd is actually valid, for error recovery */ |
1638 |
inline_size int ecb_cold |
1639 |
fd_valid (int fd) |
1640 |
{ |
1641 |
#ifdef _WIN32 |
1642 |
return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1643 |
#else |
1644 |
return fcntl (fd, F_GETFD) != -1; |
1645 |
#endif |
1646 |
} |
1647 |
|
1648 |
/* called on EBADF to verify fds */ |
1649 |
static void noinline ecb_cold |
1650 |
fd_ebadf (EV_P) |
1651 |
{ |
1652 |
int fd; |
1653 |
|
1654 |
for (fd = 0; fd < anfdmax; ++fd) |
1655 |
if (anfds [fd].events) |
1656 |
if (!fd_valid (fd) && errno == EBADF) |
1657 |
fd_kill (EV_A_ fd); |
1658 |
} |
1659 |
|
1660 |
/* called on ENOMEM in select/poll to kill some fds and retry */ |
1661 |
static void noinline ecb_cold |
1662 |
fd_enomem (EV_P) |
1663 |
{ |
1664 |
int fd; |
1665 |
|
1666 |
for (fd = anfdmax; fd--; ) |
1667 |
if (anfds [fd].events) |
1668 |
{ |
1669 |
fd_kill (EV_A_ fd); |
1670 |
break; |
1671 |
} |
1672 |
} |
1673 |
|
1674 |
/* usually called after fork if backend needs to re-arm all fds from scratch */ |
1675 |
static void noinline |
1676 |
fd_rearm_all (EV_P) |
1677 |
{ |
1678 |
int fd; |
1679 |
|
1680 |
for (fd = 0; fd < anfdmax; ++fd) |
1681 |
if (anfds [fd].events) |
1682 |
{ |
1683 |
anfds [fd].events = 0; |
1684 |
anfds [fd].emask = 0; |
1685 |
fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
1686 |
} |
1687 |
} |
1688 |
|
1689 |
/* used to prepare libev internal fd's */ |
1690 |
/* this is not fork-safe */ |
1691 |
inline_speed void |
1692 |
fd_intern (int fd) |
1693 |
{ |
1694 |
#ifdef _WIN32 |
1695 |
unsigned long arg = 1; |
1696 |
ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
1697 |
#else |
1698 |
fcntl (fd, F_SETFD, FD_CLOEXEC); |
1699 |
fcntl (fd, F_SETFL, O_NONBLOCK); |
1700 |
#endif |
1701 |
} |
1702 |
|
1703 |
/*****************************************************************************/ |
1704 |
|
1705 |
/* |
1706 |
* the heap functions want a real array index. array index 0 is guaranteed to not |
1707 |
* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
1708 |
* the branching factor of the d-tree. |
1709 |
*/ |
1710 |
|
1711 |
/* |
1712 |
* at the moment we allow libev the luxury of two heaps, |
1713 |
* a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
1714 |
* which is more cache-efficient. |
1715 |
* the difference is about 5% with 50000+ watchers. |
1716 |
*/ |
1717 |
#if EV_USE_4HEAP |
1718 |
|
1719 |
#define DHEAP 4 |
1720 |
#define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
1721 |
#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
1722 |
#define UPHEAP_DONE(p,k) ((p) == (k)) |
1723 |
|
1724 |
/* away from the root */ |
1725 |
inline_speed void |
1726 |
downheap (ANHE *heap, int N, int k) |
1727 |
{ |
1728 |
ANHE he = heap [k]; |
1729 |
ANHE *E = heap + N + HEAP0; |
1730 |
|
1731 |
for (;;) |
1732 |
{ |
1733 |
ev_tstamp minat; |
1734 |
ANHE *minpos; |
1735 |
ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
1736 |
|
1737 |
/* find minimum child */ |
1738 |
if (expect_true (pos + DHEAP - 1 < E)) |
1739 |
{ |
1740 |
/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
1741 |
if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
1742 |
if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
1743 |
if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
1744 |
} |
1745 |
else if (pos < E) |
1746 |
{ |
1747 |
/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
1748 |
if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
1749 |
if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
1750 |
if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
1751 |
} |
1752 |
else |
1753 |
break; |
1754 |
|
1755 |
if (ANHE_at (he) <= minat) |
1756 |
break; |
1757 |
|
1758 |
heap [k] = *minpos; |
1759 |
ev_active (ANHE_w (*minpos)) = k; |
1760 |
|
1761 |
k = minpos - heap; |
1762 |
} |
1763 |
|
1764 |
heap [k] = he; |
1765 |
ev_active (ANHE_w (he)) = k; |
1766 |
} |
1767 |
|
1768 |
#else /* 4HEAP */ |
1769 |
|
1770 |
#define HEAP0 1 |
1771 |
#define HPARENT(k) ((k) >> 1) |
1772 |
#define UPHEAP_DONE(p,k) (!(p)) |
1773 |
|
1774 |
/* away from the root */ |
1775 |
inline_speed void |
1776 |
downheap (ANHE *heap, int N, int k) |
1777 |
{ |
1778 |
ANHE he = heap [k]; |
1779 |
|
1780 |
for (;;) |
1781 |
{ |
1782 |
int c = k << 1; |
1783 |
|
1784 |
if (c >= N + HEAP0) |
1785 |
break; |
1786 |
|
1787 |
c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
1788 |
? 1 : 0; |
1789 |
|
1790 |
if (ANHE_at (he) <= ANHE_at (heap [c])) |
1791 |
break; |
1792 |
|
1793 |
heap [k] = heap [c]; |
1794 |
ev_active (ANHE_w (heap [k])) = k; |
1795 |
|
1796 |
k = c; |
1797 |
} |
1798 |
|
1799 |
heap [k] = he; |
1800 |
ev_active (ANHE_w (he)) = k; |
1801 |
} |
1802 |
#endif |
1803 |
|
1804 |
/* towards the root */ |
1805 |
inline_speed void |
1806 |
upheap (ANHE *heap, int k) |
1807 |
{ |
1808 |
ANHE he = heap [k]; |
1809 |
|
1810 |
for (;;) |
1811 |
{ |
1812 |
int p = HPARENT (k); |
1813 |
|
1814 |
if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
1815 |
break; |
1816 |
|
1817 |
heap [k] = heap [p]; |
1818 |
ev_active (ANHE_w (heap [k])) = k; |
1819 |
k = p; |
1820 |
} |
1821 |
|
1822 |
heap [k] = he; |
1823 |
ev_active (ANHE_w (he)) = k; |
1824 |
} |
1825 |
|
1826 |
/* move an element suitably so it is in a correct place */ |
1827 |
inline_size void |
1828 |
adjustheap (ANHE *heap, int N, int k) |
1829 |
{ |
1830 |
if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
1831 |
upheap (heap, k); |
1832 |
else |
1833 |
downheap (heap, N, k); |
1834 |
} |
1835 |
|
1836 |
/* rebuild the heap: this function is used only once and executed rarely */ |
1837 |
inline_size void |
1838 |
reheap (ANHE *heap, int N) |
1839 |
{ |
1840 |
int i; |
1841 |
|
1842 |
/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
1843 |
/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
1844 |
for (i = 0; i < N; ++i) |
1845 |
upheap (heap, i + HEAP0); |
1846 |
} |
1847 |
|
1848 |
/*****************************************************************************/ |
1849 |
|
1850 |
/* associate signal watchers to a signal signal */ |
1851 |
typedef struct |
1852 |
{ |
1853 |
EV_ATOMIC_T pending; |
1854 |
#if EV_MULTIPLICITY |
1855 |
EV_P; |
1856 |
#endif |
1857 |
WL head; |
1858 |
} ANSIG; |
1859 |
|
1860 |
static ANSIG signals [EV_NSIG - 1]; |
1861 |
|
1862 |
/*****************************************************************************/ |
1863 |
|
1864 |
#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1865 |
|
1866 |
static void noinline ecb_cold |
1867 |
evpipe_init (EV_P) |
1868 |
{ |
1869 |
if (!ev_is_active (&pipe_w)) |
1870 |
{ |
1871 |
# if EV_USE_EVENTFD |
1872 |
evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1873 |
if (evfd < 0 && errno == EINVAL) |
1874 |
evfd = eventfd (0, 0); |
1875 |
|
1876 |
if (evfd >= 0) |
1877 |
{ |
1878 |
evpipe [0] = -1; |
1879 |
fd_intern (evfd); /* doing it twice doesn't hurt */ |
1880 |
ev_io_set (&pipe_w, evfd, EV_READ); |
1881 |
} |
1882 |
else |
1883 |
# endif |
1884 |
{ |
1885 |
while (pipe (evpipe)) |
1886 |
ev_syserr ("(libev) error creating signal/async pipe"); |
1887 |
|
1888 |
fd_intern (evpipe [0]); |
1889 |
fd_intern (evpipe [1]); |
1890 |
ev_io_set (&pipe_w, evpipe [0], EV_READ); |
1891 |
} |
1892 |
|
1893 |
ev_io_start (EV_A_ &pipe_w); |
1894 |
ev_unref (EV_A); /* watcher should not keep loop alive */ |
1895 |
} |
1896 |
} |
1897 |
|
1898 |
inline_speed void |
1899 |
evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1900 |
{ |
1901 |
ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
1902 |
|
1903 |
if (expect_true (*flag)) |
1904 |
return; |
1905 |
|
1906 |
*flag = 1; |
1907 |
ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
1908 |
|
1909 |
pipe_write_skipped = 1; |
1910 |
|
1911 |
ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
1912 |
|
1913 |
if (pipe_write_wanted) |
1914 |
{ |
1915 |
int old_errno; |
1916 |
|
1917 |
pipe_write_skipped = 0; |
1918 |
ECB_MEMORY_FENCE_RELEASE; |
1919 |
|
1920 |
old_errno = errno; /* save errno because write will clobber it */ |
1921 |
|
1922 |
#if EV_USE_EVENTFD |
1923 |
if (evfd >= 0) |
1924 |
{ |
1925 |
uint64_t counter = 1; |
1926 |
write (evfd, &counter, sizeof (uint64_t)); |
1927 |
} |
1928 |
else |
1929 |
#endif |
1930 |
{ |
1931 |
#ifdef _WIN32 |
1932 |
WSABUF buf; |
1933 |
DWORD sent; |
1934 |
buf.buf = &buf; |
1935 |
buf.len = 1; |
1936 |
WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
1937 |
#else |
1938 |
write (evpipe [1], &(evpipe [1]), 1); |
1939 |
#endif |
1940 |
} |
1941 |
|
1942 |
errno = old_errno; |
1943 |
} |
1944 |
} |
1945 |
|
1946 |
/* called whenever the libev signal pipe */ |
1947 |
/* got some events (signal, async) */ |
1948 |
static void |
1949 |
pipecb (EV_P_ ev_io *iow, int revents) |
1950 |
{ |
1951 |
int i; |
1952 |
|
1953 |
if (revents & EV_READ) |
1954 |
{ |
1955 |
#if EV_USE_EVENTFD |
1956 |
if (evfd >= 0) |
1957 |
{ |
1958 |
uint64_t counter; |
1959 |
read (evfd, &counter, sizeof (uint64_t)); |
1960 |
} |
1961 |
else |
1962 |
#endif |
1963 |
{ |
1964 |
char dummy[4]; |
1965 |
#ifdef _WIN32 |
1966 |
WSABUF buf; |
1967 |
DWORD recvd; |
1968 |
DWORD flags = 0; |
1969 |
buf.buf = dummy; |
1970 |
buf.len = sizeof (dummy); |
1971 |
WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
1972 |
#else |
1973 |
read (evpipe [0], &dummy, sizeof (dummy)); |
1974 |
#endif |
1975 |
} |
1976 |
} |
1977 |
|
1978 |
pipe_write_skipped = 0; |
1979 |
|
1980 |
ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
1981 |
|
1982 |
#if EV_SIGNAL_ENABLE |
1983 |
if (sig_pending) |
1984 |
{ |
1985 |
sig_pending = 0; |
1986 |
|
1987 |
ECB_MEMORY_FENCE; |
1988 |
|
1989 |
for (i = EV_NSIG - 1; i--; ) |
1990 |
if (expect_false (signals [i].pending)) |
1991 |
ev_feed_signal_event (EV_A_ i + 1); |
1992 |
} |
1993 |
#endif |
1994 |
|
1995 |
#if EV_ASYNC_ENABLE |
1996 |
if (async_pending) |
1997 |
{ |
1998 |
async_pending = 0; |
1999 |
|
2000 |
ECB_MEMORY_FENCE; |
2001 |
|
2002 |
for (i = asynccnt; i--; ) |
2003 |
if (asyncs [i]->sent) |
2004 |
{ |
2005 |
asyncs [i]->sent = 0; |
2006 |
ECB_MEMORY_FENCE_RELEASE; |
2007 |
ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
2008 |
} |
2009 |
} |
2010 |
#endif |
2011 |
} |
2012 |
|
2013 |
/*****************************************************************************/ |
2014 |
|
2015 |
void |
2016 |
ev_feed_signal (int signum) EV_THROW |
2017 |
{ |
2018 |
#if EV_MULTIPLICITY |
2019 |
EV_P = signals [signum - 1].loop; |
2020 |
|
2021 |
if (!EV_A) |
2022 |
return; |
2023 |
#endif |
2024 |
|
2025 |
if (!ev_active (&pipe_w)) |
2026 |
return; |
2027 |
|
2028 |
signals [signum - 1].pending = 1; |
2029 |
evpipe_write (EV_A_ &sig_pending); |
2030 |
} |
2031 |
|
2032 |
static void |
2033 |
ev_sighandler (int signum) |
2034 |
{ |
2035 |
#ifdef _WIN32 |
2036 |
signal (signum, ev_sighandler); |
2037 |
#endif |
2038 |
|
2039 |
ev_feed_signal (signum); |
2040 |
} |
2041 |
|
2042 |
void noinline |
2043 |
ev_feed_signal_event (EV_P_ int signum) EV_THROW |
2044 |
{ |
2045 |
WL w; |
2046 |
|
2047 |
if (expect_false (signum <= 0 || signum > EV_NSIG)) |
2048 |
return; |
2049 |
|
2050 |
--signum; |
2051 |
|
2052 |
#if EV_MULTIPLICITY |
2053 |
/* it is permissible to try to feed a signal to the wrong loop */ |
2054 |
/* or, likely more useful, feeding a signal nobody is waiting for */ |
2055 |
|
2056 |
if (expect_false (signals [signum].loop != EV_A)) |
2057 |
return; |
2058 |
#endif |
2059 |
|
2060 |
signals [signum].pending = 0; |
2061 |
ECB_MEMORY_FENCE_RELEASE; |
2062 |
|
2063 |
for (w = signals [signum].head; w; w = w->next) |
2064 |
ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2065 |
} |
2066 |
|
2067 |
#if EV_USE_SIGNALFD |
2068 |
static void |
2069 |
sigfdcb (EV_P_ ev_io *iow, int revents) |
2070 |
{ |
2071 |
struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
2072 |
|
2073 |
for (;;) |
2074 |
{ |
2075 |
ssize_t res = read (sigfd, si, sizeof (si)); |
2076 |
|
2077 |
/* not ISO-C, as res might be -1, but works with SuS */ |
2078 |
for (sip = si; (char *)sip < (char *)si + res; ++sip) |
2079 |
ev_feed_signal_event (EV_A_ sip->ssi_signo); |
2080 |
|
2081 |
if (res < (ssize_t)sizeof (si)) |
2082 |
break; |
2083 |
} |
2084 |
} |
2085 |
#endif |
2086 |
|
2087 |
#endif |
2088 |
|
2089 |
/*****************************************************************************/ |
2090 |
|
2091 |
#if EV_CHILD_ENABLE |
2092 |
static WL childs [EV_PID_HASHSIZE]; |
2093 |
|
2094 |
static ev_signal childev; |
2095 |
|
2096 |
#ifndef WIFCONTINUED |
2097 |
# define WIFCONTINUED(status) 0 |
2098 |
#endif |
2099 |
|
2100 |
/* handle a single child status event */ |
2101 |
inline_speed void |
2102 |
child_reap (EV_P_ int chain, int pid, int status) |
2103 |
{ |
2104 |
ev_child *w; |
2105 |
int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
2106 |
|
2107 |
for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
2108 |
{ |
2109 |
if ((w->pid == pid || !w->pid) |
2110 |
&& (!traced || (w->flags & 1))) |
2111 |
{ |
2112 |
ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
2113 |
w->rpid = pid; |
2114 |
w->rstatus = status; |
2115 |
ev_feed_event (EV_A_ (W)w, EV_CHILD); |
2116 |
} |
2117 |
} |
2118 |
} |
2119 |
|
2120 |
#ifndef WCONTINUED |
2121 |
# define WCONTINUED 0 |
2122 |
#endif |
2123 |
|
2124 |
/* called on sigchld etc., calls waitpid */ |
2125 |
static void |
2126 |
childcb (EV_P_ ev_signal *sw, int revents) |
2127 |
{ |
2128 |
int pid, status; |
2129 |
|
2130 |
/* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
2131 |
if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
2132 |
if (!WCONTINUED |
2133 |
|| errno != EINVAL |
2134 |
|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
2135 |
return; |
2136 |
|
2137 |
/* make sure we are called again until all children have been reaped */ |
2138 |
/* we need to do it this way so that the callback gets called before we continue */ |
2139 |
ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
2140 |
|
2141 |
child_reap (EV_A_ pid, pid, status); |
2142 |
if ((EV_PID_HASHSIZE) > 1) |
2143 |
child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
2144 |
} |
2145 |
|
2146 |
#endif |
2147 |
|
2148 |
/*****************************************************************************/ |
2149 |
|
2150 |
#if EV_USE_IOCP |
2151 |
# include "ev_iocp.c" |
2152 |
#endif |
2153 |
#if EV_USE_PORT |
2154 |
# include "ev_port.c" |
2155 |
#endif |
2156 |
#if EV_USE_KQUEUE |
2157 |
# include "ev_kqueue.c" |
2158 |
#endif |
2159 |
#if EV_USE_EPOLL |
2160 |
# include "ev_epoll.c" |
2161 |
#endif |
2162 |
#if EV_USE_POLL |
2163 |
# include "ev_poll.c" |
2164 |
#endif |
2165 |
#if EV_USE_SELECT |
2166 |
# include "ev_select.c" |
2167 |
#endif |
2168 |
|
2169 |
int ecb_cold |
2170 |
ev_version_major (void) EV_THROW |
2171 |
{ |
2172 |
return EV_VERSION_MAJOR; |
2173 |
} |
2174 |
|
2175 |
int ecb_cold |
2176 |
ev_version_minor (void) EV_THROW |
2177 |
{ |
2178 |
return EV_VERSION_MINOR; |
2179 |
} |
2180 |
|
2181 |
/* return true if we are running with elevated privileges and should ignore env variables */ |
2182 |
int inline_size ecb_cold |
2183 |
enable_secure (void) |
2184 |
{ |
2185 |
#ifdef _WIN32 |
2186 |
return 0; |
2187 |
#else |
2188 |
return getuid () != geteuid () |
2189 |
|| getgid () != getegid (); |
2190 |
#endif |
2191 |
} |
2192 |
|
2193 |
unsigned int ecb_cold |
2194 |
ev_supported_backends (void) EV_THROW |
2195 |
{ |
2196 |
unsigned int flags = 0; |
2197 |
|
2198 |
if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2199 |
if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
2200 |
if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
2201 |
if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
2202 |
if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2203 |
|
2204 |
return flags; |
2205 |
} |
2206 |
|
2207 |
unsigned int ecb_cold |
2208 |
ev_recommended_backends (void) EV_THROW |
2209 |
{ |
2210 |
unsigned int flags = ev_supported_backends (); |
2211 |
|
2212 |
#ifndef __NetBSD__ |
2213 |
/* kqueue is borked on everything but netbsd apparently */ |
2214 |
/* it usually doesn't work correctly on anything but sockets and pipes */ |
2215 |
flags &= ~EVBACKEND_KQUEUE; |
2216 |
#endif |
2217 |
#ifdef __APPLE__ |
2218 |
/* only select works correctly on that "unix-certified" platform */ |
2219 |
flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
2220 |
flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
2221 |
#endif |
2222 |
#ifdef __FreeBSD__ |
2223 |
flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
2224 |
#endif |
2225 |
|
2226 |
return flags; |
2227 |
} |
2228 |
|
2229 |
unsigned int ecb_cold |
2230 |
ev_embeddable_backends (void) EV_THROW |
2231 |
{ |
2232 |
int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2233 |
|
2234 |
/* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2235 |
if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
2236 |
flags &= ~EVBACKEND_EPOLL; |
2237 |
|
2238 |
return flags; |
2239 |
} |
2240 |
|
2241 |
unsigned int |
2242 |
ev_backend (EV_P) EV_THROW |
2243 |
{ |
2244 |
return backend; |
2245 |
} |
2246 |
|
2247 |
#if EV_FEATURE_API |
2248 |
unsigned int |
2249 |
ev_iteration (EV_P) EV_THROW |
2250 |
{ |
2251 |
return loop_count; |
2252 |
} |
2253 |
|
2254 |
unsigned int |
2255 |
ev_depth (EV_P) EV_THROW |
2256 |
{ |
2257 |
return loop_depth; |
2258 |
} |
2259 |
|
2260 |
void |
2261 |
ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
2262 |
{ |
2263 |
io_blocktime = interval; |
2264 |
} |
2265 |
|
2266 |
void |
2267 |
ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
2268 |
{ |
2269 |
timeout_blocktime = interval; |
2270 |
} |
2271 |
|
2272 |
void |
2273 |
ev_set_userdata (EV_P_ void *data) EV_THROW |
2274 |
{ |
2275 |
userdata = data; |
2276 |
} |
2277 |
|
2278 |
void * |
2279 |
ev_userdata (EV_P) EV_THROW |
2280 |
{ |
2281 |
return userdata; |
2282 |
} |
2283 |
|
2284 |
void |
2285 |
ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW |
2286 |
{ |
2287 |
invoke_cb = invoke_pending_cb; |
2288 |
} |
2289 |
|
2290 |
void |
2291 |
ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW |
2292 |
{ |
2293 |
release_cb = release; |
2294 |
acquire_cb = acquire; |
2295 |
} |
2296 |
#endif |
2297 |
|
2298 |
/* initialise a loop structure, must be zero-initialised */ |
2299 |
static void noinline ecb_cold |
2300 |
loop_init (EV_P_ unsigned int flags) EV_THROW |
2301 |
{ |
2302 |
if (!backend) |
2303 |
{ |
2304 |
origflags = flags; |
2305 |
|
2306 |
#if EV_USE_REALTIME |
2307 |
if (!have_realtime) |
2308 |
{ |
2309 |
struct timespec ts; |
2310 |
|
2311 |
if (!clock_gettime (CLOCK_REALTIME, &ts)) |
2312 |
have_realtime = 1; |
2313 |
} |
2314 |
#endif |
2315 |
|
2316 |
#if EV_USE_MONOTONIC |
2317 |
if (!have_monotonic) |
2318 |
{ |
2319 |
struct timespec ts; |
2320 |
|
2321 |
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
2322 |
have_monotonic = 1; |
2323 |
} |
2324 |
#endif |
2325 |
|
2326 |
/* pid check not overridable via env */ |
2327 |
#ifndef _WIN32 |
2328 |
if (flags & EVFLAG_FORKCHECK) |
2329 |
curpid = getpid (); |
2330 |
#endif |
2331 |
|
2332 |
if (!(flags & EVFLAG_NOENV) |
2333 |
&& !enable_secure () |
2334 |
&& getenv ("LIBEV_FLAGS")) |
2335 |
flags = atoi (getenv ("LIBEV_FLAGS")); |
2336 |
|
2337 |
ev_rt_now = ev_time (); |
2338 |
mn_now = get_clock (); |
2339 |
now_floor = mn_now; |
2340 |
rtmn_diff = ev_rt_now - mn_now; |
2341 |
#if EV_FEATURE_API |
2342 |
invoke_cb = ev_invoke_pending; |
2343 |
#endif |
2344 |
|
2345 |
io_blocktime = 0.; |
2346 |
timeout_blocktime = 0.; |
2347 |
backend = 0; |
2348 |
backend_fd = -1; |
2349 |
sig_pending = 0; |
2350 |
#if EV_ASYNC_ENABLE |
2351 |
async_pending = 0; |
2352 |
#endif |
2353 |
pipe_write_skipped = 0; |
2354 |
pipe_write_wanted = 0; |
2355 |
#if EV_USE_INOTIFY |
2356 |
fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2357 |
#endif |
2358 |
#if EV_USE_SIGNALFD |
2359 |
sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2360 |
#endif |
2361 |
|
2362 |
if (!(flags & EVBACKEND_MASK)) |
2363 |
flags |= ev_recommended_backends (); |
2364 |
|
2365 |
#if EV_USE_IOCP |
2366 |
if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
2367 |
#endif |
2368 |
#if EV_USE_PORT |
2369 |
if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
2370 |
#endif |
2371 |
#if EV_USE_KQUEUE |
2372 |
if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
2373 |
#endif |
2374 |
#if EV_USE_EPOLL |
2375 |
if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
2376 |
#endif |
2377 |
#if EV_USE_POLL |
2378 |
if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
2379 |
#endif |
2380 |
#if EV_USE_SELECT |
2381 |
if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
2382 |
#endif |
2383 |
|
2384 |
ev_prepare_init (&pending_w, pendingcb); |
2385 |
|
2386 |
#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2387 |
ev_init (&pipe_w, pipecb); |
2388 |
ev_set_priority (&pipe_w, EV_MAXPRI); |
2389 |
#endif |
2390 |
} |
2391 |
} |
2392 |
|
2393 |
/* free up a loop structure */ |
2394 |
void ecb_cold |
2395 |
ev_loop_destroy (EV_P) |
2396 |
{ |
2397 |
int i; |
2398 |
|
2399 |
#if EV_MULTIPLICITY |
2400 |
/* mimic free (0) */ |
2401 |
if (!EV_A) |
2402 |
return; |
2403 |
#endif |
2404 |
|
2405 |
#if EV_CLEANUP_ENABLE |
2406 |
/* queue cleanup watchers (and execute them) */ |
2407 |
if (expect_false (cleanupcnt)) |
2408 |
{ |
2409 |
queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
2410 |
EV_INVOKE_PENDING; |
2411 |
} |
2412 |
#endif |
2413 |
|
2414 |
#if EV_CHILD_ENABLE |
2415 |
if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
2416 |
{ |
2417 |
ev_ref (EV_A); /* child watcher */ |
2418 |
ev_signal_stop (EV_A_ &childev); |
2419 |
} |
2420 |
#endif |
2421 |
|
2422 |
if (ev_is_active (&pipe_w)) |
2423 |
{ |
2424 |
/*ev_ref (EV_A);*/ |
2425 |
/*ev_io_stop (EV_A_ &pipe_w);*/ |
2426 |
|
2427 |
#if EV_USE_EVENTFD |
2428 |
if (evfd >= 0) |
2429 |
close (evfd); |
2430 |
#endif |
2431 |
|
2432 |
if (evpipe [0] >= 0) |
2433 |
{ |
2434 |
EV_WIN32_CLOSE_FD (evpipe [0]); |
2435 |
EV_WIN32_CLOSE_FD (evpipe [1]); |
2436 |
} |
2437 |
} |
2438 |
|
2439 |
#if EV_USE_SIGNALFD |
2440 |
if (ev_is_active (&sigfd_w)) |
2441 |
close (sigfd); |
2442 |
#endif |
2443 |
|
2444 |
#if EV_USE_INOTIFY |
2445 |
if (fs_fd >= 0) |
2446 |
close (fs_fd); |
2447 |
#endif |
2448 |
|
2449 |
if (backend_fd >= 0) |
2450 |
close (backend_fd); |
2451 |
|
2452 |
#if EV_USE_IOCP |
2453 |
if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
2454 |
#endif |
2455 |
#if EV_USE_PORT |
2456 |
if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
2457 |
#endif |
2458 |
#if EV_USE_KQUEUE |
2459 |
if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
2460 |
#endif |
2461 |
#if EV_USE_EPOLL |
2462 |
if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
2463 |
#endif |
2464 |
#if EV_USE_POLL |
2465 |
if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
2466 |
#endif |
2467 |
#if EV_USE_SELECT |
2468 |
if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
2469 |
#endif |
2470 |
|
2471 |
for (i = NUMPRI; i--; ) |
2472 |
{ |
2473 |
array_free (pending, [i]); |
2474 |
#if EV_IDLE_ENABLE |
2475 |
array_free (idle, [i]); |
2476 |
#endif |
2477 |
} |
2478 |
|
2479 |
ev_free (anfds); anfds = 0; anfdmax = 0; |
2480 |
|
2481 |
/* have to use the microsoft-never-gets-it-right macro */ |
2482 |
array_free (rfeed, EMPTY); |
2483 |
array_free (fdchange, EMPTY); |
2484 |
array_free (timer, EMPTY); |
2485 |
#if EV_PERIODIC_ENABLE |
2486 |
array_free (periodic, EMPTY); |
2487 |
#endif |
2488 |
#if EV_FORK_ENABLE |
2489 |
array_free (fork, EMPTY); |
2490 |
#endif |
2491 |
#if EV_CLEANUP_ENABLE |
2492 |
array_free (cleanup, EMPTY); |
2493 |
#endif |
2494 |
array_free (prepare, EMPTY); |
2495 |
array_free (check, EMPTY); |
2496 |
#if EV_ASYNC_ENABLE |
2497 |
array_free (async, EMPTY); |
2498 |
#endif |
2499 |
|
2500 |
backend = 0; |
2501 |
|
2502 |
#if EV_MULTIPLICITY |
2503 |
if (ev_is_default_loop (EV_A)) |
2504 |
#endif |
2505 |
ev_default_loop_ptr = 0; |
2506 |
#if EV_MULTIPLICITY |
2507 |
else |
2508 |
ev_free (EV_A); |
2509 |
#endif |
2510 |
} |
2511 |
|
2512 |
#if EV_USE_INOTIFY |
2513 |
inline_size void infy_fork (EV_P); |
2514 |
#endif |
2515 |
|
2516 |
inline_size void |
2517 |
loop_fork (EV_P) |
2518 |
{ |
2519 |
#if EV_USE_PORT |
2520 |
if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
2521 |
#endif |
2522 |
#if EV_USE_KQUEUE |
2523 |
if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
2524 |
#endif |
2525 |
#if EV_USE_EPOLL |
2526 |
if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
2527 |
#endif |
2528 |
#if EV_USE_INOTIFY |
2529 |
infy_fork (EV_A); |
2530 |
#endif |
2531 |
|
2532 |
if (ev_is_active (&pipe_w)) |
2533 |
{ |
2534 |
/* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2535 |
|
2536 |
ev_ref (EV_A); |
2537 |
ev_io_stop (EV_A_ &pipe_w); |
2538 |
|
2539 |
#if EV_USE_EVENTFD |
2540 |
if (evfd >= 0) |
2541 |
close (evfd); |
2542 |
#endif |
2543 |
|
2544 |
if (evpipe [0] >= 0) |
2545 |
{ |
2546 |
EV_WIN32_CLOSE_FD (evpipe [0]); |
2547 |
EV_WIN32_CLOSE_FD (evpipe [1]); |
2548 |
} |
2549 |
|
2550 |
#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2551 |
evpipe_init (EV_A); |
2552 |
/* now iterate over everything, in case we missed something */ |
2553 |
pipecb (EV_A_ &pipe_w, EV_READ); |
2554 |
#endif |
2555 |
} |
2556 |
|
2557 |
postfork = 0; |
2558 |
} |
2559 |
|
2560 |
#if EV_MULTIPLICITY |
2561 |
|
2562 |
struct ev_loop * ecb_cold |
2563 |
ev_loop_new (unsigned int flags) EV_THROW |
2564 |
{ |
2565 |
EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2566 |
|
2567 |
memset (EV_A, 0, sizeof (struct ev_loop)); |
2568 |
loop_init (EV_A_ flags); |
2569 |
|
2570 |
if (ev_backend (EV_A)) |
2571 |
return EV_A; |
2572 |
|
2573 |
ev_free (EV_A); |
2574 |
return 0; |
2575 |
} |
2576 |
|
2577 |
#endif /* multiplicity */ |
2578 |
|
2579 |
#if EV_VERIFY |
2580 |
static void noinline ecb_cold |
2581 |
verify_watcher (EV_P_ W w) |
2582 |
{ |
2583 |
assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2584 |
|
2585 |
if (w->pending) |
2586 |
assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2587 |
} |
2588 |
|
2589 |
static void noinline ecb_cold |
2590 |
verify_heap (EV_P_ ANHE *heap, int N) |
2591 |
{ |
2592 |
int i; |
2593 |
|
2594 |
for (i = HEAP0; i < N + HEAP0; ++i) |
2595 |
{ |
2596 |
assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
2597 |
assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
2598 |
assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
2599 |
|
2600 |
verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2601 |
} |
2602 |
} |
2603 |
|
2604 |
static void noinline ecb_cold |
2605 |
array_verify (EV_P_ W *ws, int cnt) |
2606 |
{ |
2607 |
while (cnt--) |
2608 |
{ |
2609 |
assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2610 |
verify_watcher (EV_A_ ws [cnt]); |
2611 |
} |
2612 |
} |
2613 |
#endif |
2614 |
|
2615 |
#if EV_FEATURE_API |
2616 |
void ecb_cold |
2617 |
ev_verify (EV_P) EV_THROW |
2618 |
{ |
2619 |
#if EV_VERIFY |
2620 |
int i; |
2621 |
WL w, w2; |
2622 |
|
2623 |
assert (activecnt >= -1); |
2624 |
|
2625 |
assert (fdchangemax >= fdchangecnt); |
2626 |
for (i = 0; i < fdchangecnt; ++i) |
2627 |
assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
2628 |
|
2629 |
assert (anfdmax >= 0); |
2630 |
for (i = 0; i < anfdmax; ++i) |
2631 |
{ |
2632 |
int j = 0; |
2633 |
|
2634 |
for (w = w2 = anfds [i].head; w; w = w->next) |
2635 |
{ |
2636 |
verify_watcher (EV_A_ (W)w); |
2637 |
|
2638 |
if (j++ & 1) |
2639 |
{ |
2640 |
assert (("libev: io watcher list contains a loop", w != w2)); |
2641 |
w2 = w2->next; |
2642 |
} |
2643 |
|
2644 |
assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
2645 |
assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
2646 |
} |
2647 |
} |
2648 |
|
2649 |
assert (timermax >= timercnt); |
2650 |
verify_heap (EV_A_ timers, timercnt); |
2651 |
|
2652 |
#if EV_PERIODIC_ENABLE |
2653 |
assert (periodicmax >= periodiccnt); |
2654 |
verify_heap (EV_A_ periodics, periodiccnt); |
2655 |
#endif |
2656 |
|
2657 |
for (i = NUMPRI; i--; ) |
2658 |
{ |
2659 |
assert (pendingmax [i] >= pendingcnt [i]); |
2660 |
#if EV_IDLE_ENABLE |
2661 |
assert (idleall >= 0); |
2662 |
assert (idlemax [i] >= idlecnt [i]); |
2663 |
array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
2664 |
#endif |
2665 |
} |
2666 |
|
2667 |
#if EV_FORK_ENABLE |
2668 |
assert (forkmax >= forkcnt); |
2669 |
array_verify (EV_A_ (W *)forks, forkcnt); |
2670 |
#endif |
2671 |
|
2672 |
#if EV_CLEANUP_ENABLE |
2673 |
assert (cleanupmax >= cleanupcnt); |
2674 |
array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
2675 |
#endif |
2676 |
|
2677 |
#if EV_ASYNC_ENABLE |
2678 |
assert (asyncmax >= asynccnt); |
2679 |
array_verify (EV_A_ (W *)asyncs, asynccnt); |
2680 |
#endif |
2681 |
|
2682 |
#if EV_PREPARE_ENABLE |
2683 |
assert (preparemax >= preparecnt); |
2684 |
array_verify (EV_A_ (W *)prepares, preparecnt); |
2685 |
#endif |
2686 |
|
2687 |
#if EV_CHECK_ENABLE |
2688 |
assert (checkmax >= checkcnt); |
2689 |
array_verify (EV_A_ (W *)checks, checkcnt); |
2690 |
#endif |
2691 |
|
2692 |
# if 0 |
2693 |
#if EV_CHILD_ENABLE |
2694 |
for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
2695 |
for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
2696 |
#endif |
2697 |
# endif |
2698 |
#endif |
2699 |
} |
2700 |
#endif |
2701 |
|
2702 |
#if EV_MULTIPLICITY |
2703 |
struct ev_loop * ecb_cold |
2704 |
#else |
2705 |
int |
2706 |
#endif |
2707 |
ev_default_loop (unsigned int flags) EV_THROW |
2708 |
{ |
2709 |
if (!ev_default_loop_ptr) |
2710 |
{ |
2711 |
#if EV_MULTIPLICITY |
2712 |
EV_P = ev_default_loop_ptr = &default_loop_struct; |
2713 |
#else |
2714 |
ev_default_loop_ptr = 1; |
2715 |
#endif |
2716 |
|
2717 |
loop_init (EV_A_ flags); |
2718 |
|
2719 |
if (ev_backend (EV_A)) |
2720 |
{ |
2721 |
#if EV_CHILD_ENABLE |
2722 |
ev_signal_init (&childev, childcb, SIGCHLD); |
2723 |
ev_set_priority (&childev, EV_MAXPRI); |
2724 |
ev_signal_start (EV_A_ &childev); |
2725 |
ev_unref (EV_A); /* child watcher should not keep loop alive */ |
2726 |
#endif |
2727 |
} |
2728 |
else |
2729 |
ev_default_loop_ptr = 0; |
2730 |
} |
2731 |
|
2732 |
return ev_default_loop_ptr; |
2733 |
} |
2734 |
|
2735 |
void |
2736 |
ev_loop_fork (EV_P) EV_THROW |
2737 |
{ |
2738 |
postfork = 1; |
2739 |
} |
2740 |
|
2741 |
/*****************************************************************************/ |
2742 |
|
2743 |
void |
2744 |
ev_invoke (EV_P_ void *w, int revents) |
2745 |
{ |
2746 |
EV_CB_INVOKE ((W)w, revents); |
2747 |
} |
2748 |
|
2749 |
unsigned int |
2750 |
ev_pending_count (EV_P) EV_THROW |
2751 |
{ |
2752 |
int pri; |
2753 |
unsigned int count = 0; |
2754 |
|
2755 |
for (pri = NUMPRI; pri--; ) |
2756 |
count += pendingcnt [pri]; |
2757 |
|
2758 |
return count; |
2759 |
} |
2760 |
|
2761 |
void noinline |
2762 |
ev_invoke_pending (EV_P) |
2763 |
{ |
2764 |
for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ |
2765 |
while (pendingcnt [pendingpri]) |
2766 |
{ |
2767 |
ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
2768 |
|
2769 |
p->w->pending = 0; |
2770 |
EV_CB_INVOKE (p->w, p->events); |
2771 |
EV_FREQUENT_CHECK; |
2772 |
} |
2773 |
} |
2774 |
|
2775 |
#if EV_IDLE_ENABLE |
2776 |
/* make idle watchers pending. this handles the "call-idle */ |
2777 |
/* only when higher priorities are idle" logic */ |
2778 |
inline_size void |
2779 |
idle_reify (EV_P) |
2780 |
{ |
2781 |
if (expect_false (idleall)) |
2782 |
{ |
2783 |
int pri; |
2784 |
|
2785 |
for (pri = NUMPRI; pri--; ) |
2786 |
{ |
2787 |
if (pendingcnt [pri]) |
2788 |
break; |
2789 |
|
2790 |
if (idlecnt [pri]) |
2791 |
{ |
2792 |
queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
2793 |
break; |
2794 |
} |
2795 |
} |
2796 |
} |
2797 |
} |
2798 |
#endif |
2799 |
|
2800 |
/* make timers pending */ |
2801 |
inline_size void |
2802 |
timers_reify (EV_P) |
2803 |
{ |
2804 |
EV_FREQUENT_CHECK; |
2805 |
|
2806 |
if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
2807 |
{ |
2808 |
do |
2809 |
{ |
2810 |
ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
2811 |
|
2812 |
/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
2813 |
|
2814 |
/* first reschedule or stop timer */ |
2815 |
if (w->repeat) |
2816 |
{ |
2817 |
ev_at (w) += w->repeat; |
2818 |
if (ev_at (w) < mn_now) |
2819 |
ev_at (w) = mn_now; |
2820 |
|
2821 |
assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
2822 |
|
2823 |
ANHE_at_cache (timers [HEAP0]); |
2824 |
downheap (timers, timercnt, HEAP0); |
2825 |
} |
2826 |
else |
2827 |
ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2828 |
|
2829 |
EV_FREQUENT_CHECK; |
2830 |
feed_reverse (EV_A_ (W)w); |
2831 |
} |
2832 |
while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
2833 |
|
2834 |
feed_reverse_done (EV_A_ EV_TIMER); |
2835 |
} |
2836 |
} |
2837 |
|
2838 |
#if EV_PERIODIC_ENABLE |
2839 |
|
2840 |
static void noinline |
2841 |
periodic_recalc (EV_P_ ev_periodic *w) |
2842 |
{ |
2843 |
ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
2844 |
ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
2845 |
|
2846 |
/* the above almost always errs on the low side */ |
2847 |
while (at <= ev_rt_now) |
2848 |
{ |
2849 |
ev_tstamp nat = at + w->interval; |
2850 |
|
2851 |
/* when resolution fails us, we use ev_rt_now */ |
2852 |
if (expect_false (nat == at)) |
2853 |
{ |
2854 |
at = ev_rt_now; |
2855 |
break; |
2856 |
} |
2857 |
|
2858 |
at = nat; |
2859 |
} |
2860 |
|
2861 |
ev_at (w) = at; |
2862 |
} |
2863 |
|
2864 |
/* make periodics pending */ |
2865 |
inline_size void |
2866 |
periodics_reify (EV_P) |
2867 |
{ |
2868 |
EV_FREQUENT_CHECK; |
2869 |
|
2870 |
while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
2871 |
{ |
2872 |
do |
2873 |
{ |
2874 |
ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
2875 |
|
2876 |
/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
2877 |
|
2878 |
/* first reschedule or stop timer */ |
2879 |
if (w->reschedule_cb) |
2880 |
{ |
2881 |
ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2882 |
|
2883 |
assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
2884 |
|
2885 |
ANHE_at_cache (periodics [HEAP0]); |
2886 |
downheap (periodics, periodiccnt, HEAP0); |
2887 |
} |
2888 |
else if (w->interval) |
2889 |
{ |
2890 |
periodic_recalc (EV_A_ w); |
2891 |
ANHE_at_cache (periodics [HEAP0]); |
2892 |
downheap (periodics, periodiccnt, HEAP0); |
2893 |
} |
2894 |
else |
2895 |
ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2896 |
|
2897 |
EV_FREQUENT_CHECK; |
2898 |
feed_reverse (EV_A_ (W)w); |
2899 |
} |
2900 |
while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
2901 |
|
2902 |
feed_reverse_done (EV_A_ EV_PERIODIC); |
2903 |
} |
2904 |
} |
2905 |
|
2906 |
/* simply recalculate all periodics */ |
2907 |
/* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2908 |
static void noinline ecb_cold |
2909 |
periodics_reschedule (EV_P) |
2910 |
{ |
2911 |
int i; |
2912 |
|
2913 |
/* adjust periodics after time jump */ |
2914 |
for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
2915 |
{ |
2916 |
ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2917 |
|
2918 |
if (w->reschedule_cb) |
2919 |
ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2920 |
else if (w->interval) |
2921 |
periodic_recalc (EV_A_ w); |
2922 |
|
2923 |
ANHE_at_cache (periodics [i]); |
2924 |
} |
2925 |
|
2926 |
reheap (periodics, periodiccnt); |
2927 |
} |
2928 |
#endif |
2929 |
|
2930 |
/* adjust all timers by a given offset */ |
2931 |
static void noinline ecb_cold |
2932 |
timers_reschedule (EV_P_ ev_tstamp adjust) |
2933 |
{ |
2934 |
int i; |
2935 |
|
2936 |
for (i = 0; i < timercnt; ++i) |
2937 |
{ |
2938 |
ANHE *he = timers + i + HEAP0; |
2939 |
ANHE_w (*he)->at += adjust; |
2940 |
ANHE_at_cache (*he); |
2941 |
} |
2942 |
} |
2943 |
|
2944 |
/* fetch new monotonic and realtime times from the kernel */ |
2945 |
/* also detect if there was a timejump, and act accordingly */ |
2946 |
inline_speed void |
2947 |
time_update (EV_P_ ev_tstamp max_block) |
2948 |
{ |
2949 |
#if EV_USE_MONOTONIC |
2950 |
if (expect_true (have_monotonic)) |
2951 |
{ |
2952 |
int i; |
2953 |
ev_tstamp odiff = rtmn_diff; |
2954 |
|
2955 |
mn_now = get_clock (); |
2956 |
|
2957 |
/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
2958 |
/* interpolate in the meantime */ |
2959 |
if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
2960 |
{ |
2961 |
ev_rt_now = rtmn_diff + mn_now; |
2962 |
return; |
2963 |
} |
2964 |
|
2965 |
now_floor = mn_now; |
2966 |
ev_rt_now = ev_time (); |
2967 |
|
2968 |
/* loop a few times, before making important decisions. |
2969 |
* on the choice of "4": one iteration isn't enough, |
2970 |
* in case we get preempted during the calls to |
2971 |
* ev_time and get_clock. a second call is almost guaranteed |
2972 |
* to succeed in that case, though. and looping a few more times |
2973 |
* doesn't hurt either as we only do this on time-jumps or |
2974 |
* in the unlikely event of having been preempted here. |
2975 |
*/ |
2976 |
for (i = 4; --i; ) |
2977 |
{ |
2978 |
ev_tstamp diff; |
2979 |
rtmn_diff = ev_rt_now - mn_now; |
2980 |
|
2981 |
diff = odiff - rtmn_diff; |
2982 |
|
2983 |
if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2984 |
return; /* all is well */ |
2985 |
|
2986 |
ev_rt_now = ev_time (); |
2987 |
mn_now = get_clock (); |
2988 |
now_floor = mn_now; |
2989 |
} |
2990 |
|
2991 |
/* no timer adjustment, as the monotonic clock doesn't jump */ |
2992 |
/* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
2993 |
# if EV_PERIODIC_ENABLE |
2994 |
periodics_reschedule (EV_A); |
2995 |
# endif |
2996 |
} |
2997 |
else |
2998 |
#endif |
2999 |
{ |
3000 |
ev_rt_now = ev_time (); |
3001 |
|
3002 |
if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
3003 |
{ |
3004 |
/* adjust timers. this is easy, as the offset is the same for all of them */ |
3005 |
timers_reschedule (EV_A_ ev_rt_now - mn_now); |
3006 |
#if EV_PERIODIC_ENABLE |
3007 |
periodics_reschedule (EV_A); |
3008 |
#endif |
3009 |
} |
3010 |
|
3011 |
mn_now = ev_rt_now; |
3012 |
} |
3013 |
} |
3014 |
|
3015 |
int |
3016 |
ev_run (EV_P_ int flags) |
3017 |
{ |
3018 |
#if EV_FEATURE_API |
3019 |
++loop_depth; |
3020 |
#endif |
3021 |
|
3022 |
assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
3023 |
|
3024 |
loop_done = EVBREAK_CANCEL; |
3025 |
|
3026 |
EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
3027 |
|
3028 |
do |
3029 |
{ |
3030 |
#if EV_VERIFY >= 2 |
3031 |
ev_verify (EV_A); |
3032 |
#endif |
3033 |
|
3034 |
#ifndef _WIN32 |
3035 |
if (expect_false (curpid)) /* penalise the forking check even more */ |
3036 |
if (expect_false (getpid () != curpid)) |
3037 |
{ |
3038 |
curpid = getpid (); |
3039 |
postfork = 1; |
3040 |
} |
3041 |
#endif |
3042 |
|
3043 |
#if EV_FORK_ENABLE |
3044 |
/* we might have forked, so queue fork handlers */ |
3045 |
if (expect_false (postfork)) |
3046 |
if (forkcnt) |
3047 |
{ |
3048 |
queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
3049 |
EV_INVOKE_PENDING; |
3050 |
} |
3051 |
#endif |
3052 |
|
3053 |
#if EV_PREPARE_ENABLE |
3054 |
/* queue prepare watchers (and execute them) */ |
3055 |
if (expect_false (preparecnt)) |
3056 |
{ |
3057 |
queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
3058 |
EV_INVOKE_PENDING; |
3059 |
} |
3060 |
#endif |
3061 |
|
3062 |
if (expect_false (loop_done)) |
3063 |
break; |
3064 |
|
3065 |
/* we might have forked, so reify kernel state if necessary */ |
3066 |
if (expect_false (postfork)) |
3067 |
loop_fork (EV_A); |
3068 |
|
3069 |
/* update fd-related kernel structures */ |
3070 |
fd_reify (EV_A); |
3071 |
|
3072 |
/* calculate blocking time */ |
3073 |
{ |
3074 |
ev_tstamp waittime = 0.; |
3075 |
ev_tstamp sleeptime = 0.; |
3076 |
|
3077 |
/* remember old timestamp for io_blocktime calculation */ |
3078 |
ev_tstamp prev_mn_now = mn_now; |
3079 |
|
3080 |
/* update time to cancel out callback processing overhead */ |
3081 |
time_update (EV_A_ 1e100); |
3082 |
|
3083 |
/* from now on, we want a pipe-wake-up */ |
3084 |
pipe_write_wanted = 1; |
3085 |
|
3086 |
ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
3087 |
|
3088 |
if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
3089 |
{ |
3090 |
waittime = MAX_BLOCKTIME; |
3091 |
|
3092 |
if (timercnt) |
3093 |
{ |
3094 |
ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
3095 |
if (waittime > to) waittime = to; |
3096 |
} |
3097 |
|
3098 |
#if EV_PERIODIC_ENABLE |
3099 |
if (periodiccnt) |
3100 |
{ |
3101 |
ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
3102 |
if (waittime > to) waittime = to; |
3103 |
} |
3104 |
#endif |
3105 |
|
3106 |
/* don't let timeouts decrease the waittime below timeout_blocktime */ |
3107 |
if (expect_false (waittime < timeout_blocktime)) |
3108 |
waittime = timeout_blocktime; |
3109 |
|
3110 |
/* at this point, we NEED to wait, so we have to ensure */ |
3111 |
/* to pass a minimum nonzero value to the backend */ |
3112 |
if (expect_false (waittime < backend_mintime)) |
3113 |
waittime = backend_mintime; |
3114 |
|
3115 |
/* extra check because io_blocktime is commonly 0 */ |
3116 |
if (expect_false (io_blocktime)) |
3117 |
{ |
3118 |
sleeptime = io_blocktime - (mn_now - prev_mn_now); |
3119 |
|
3120 |
if (sleeptime > waittime - backend_mintime) |
3121 |
sleeptime = waittime - backend_mintime; |
3122 |
|
3123 |
if (expect_true (sleeptime > 0.)) |
3124 |
{ |
3125 |
ev_sleep (sleeptime); |
3126 |
waittime -= sleeptime; |
3127 |
} |
3128 |
} |
3129 |
} |
3130 |
|
3131 |
#if EV_FEATURE_API |
3132 |
++loop_count; |
3133 |
#endif |
3134 |
assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
3135 |
backend_poll (EV_A_ waittime); |
3136 |
assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
3137 |
|
3138 |
pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
3139 |
|
3140 |
if (pipe_write_skipped) |
3141 |
{ |
3142 |
assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
3143 |
ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
3144 |
} |
3145 |
|
3146 |
|
3147 |
/* update ev_rt_now, do magic */ |
3148 |
time_update (EV_A_ waittime + sleeptime); |
3149 |
} |
3150 |
|
3151 |
/* queue pending timers and reschedule them */ |
3152 |
timers_reify (EV_A); /* relative timers called last */ |
3153 |
#if EV_PERIODIC_ENABLE |
3154 |
periodics_reify (EV_A); /* absolute timers called first */ |
3155 |
#endif |
3156 |
|
3157 |
#if EV_IDLE_ENABLE |
3158 |
/* queue idle watchers unless other events are pending */ |
3159 |
idle_reify (EV_A); |
3160 |
#endif |
3161 |
|
3162 |
#if EV_CHECK_ENABLE |
3163 |
/* queue check watchers, to be executed first */ |
3164 |
if (expect_false (checkcnt)) |
3165 |
queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
3166 |
#endif |
3167 |
|
3168 |
EV_INVOKE_PENDING; |
3169 |
} |
3170 |
while (expect_true ( |
3171 |
activecnt |
3172 |
&& !loop_done |
3173 |
&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
3174 |
)); |
3175 |
|
3176 |
if (loop_done == EVBREAK_ONE) |
3177 |
loop_done = EVBREAK_CANCEL; |
3178 |
|
3179 |
#if EV_FEATURE_API |
3180 |
--loop_depth; |
3181 |
#endif |
3182 |
|
3183 |
return activecnt; |
3184 |
} |
3185 |
|
3186 |
void |
3187 |
ev_break (EV_P_ int how) EV_THROW |
3188 |
{ |
3189 |
loop_done = how; |
3190 |
} |
3191 |
|
3192 |
void |
3193 |
ev_ref (EV_P) EV_THROW |
3194 |
{ |
3195 |
++activecnt; |
3196 |
} |
3197 |
|
3198 |
void |
3199 |
ev_unref (EV_P) EV_THROW |
3200 |
{ |
3201 |
--activecnt; |
3202 |
} |
3203 |
|
3204 |
void |
3205 |
ev_now_update (EV_P) EV_THROW |
3206 |
{ |
3207 |
time_update (EV_A_ 1e100); |
3208 |
} |
3209 |
|
3210 |
void |
3211 |
ev_suspend (EV_P) EV_THROW |
3212 |
{ |
3213 |
ev_now_update (EV_A); |
3214 |
} |
3215 |
|
3216 |
void |
3217 |
ev_resume (EV_P) EV_THROW |
3218 |
{ |
3219 |
ev_tstamp mn_prev = mn_now; |
3220 |
|
3221 |
ev_now_update (EV_A); |
3222 |
timers_reschedule (EV_A_ mn_now - mn_prev); |
3223 |
#if EV_PERIODIC_ENABLE |
3224 |
/* TODO: really do this? */ |
3225 |
periodics_reschedule (EV_A); |
3226 |
#endif |
3227 |
} |
3228 |
|
3229 |
/*****************************************************************************/ |
3230 |
/* singly-linked list management, used when the expected list length is short */ |
3231 |
|
3232 |
inline_size void |
3233 |
wlist_add (WL *head, WL elem) |
3234 |
{ |
3235 |
elem->next = *head; |
3236 |
*head = elem; |
3237 |
} |
3238 |
|
3239 |
inline_size void |
3240 |
wlist_del (WL *head, WL elem) |
3241 |
{ |
3242 |
while (*head) |
3243 |
{ |
3244 |
if (expect_true (*head == elem)) |
3245 |
{ |
3246 |
*head = elem->next; |
3247 |
break; |
3248 |
} |
3249 |
|
3250 |
head = &(*head)->next; |
3251 |
} |
3252 |
} |
3253 |
|
3254 |
/* internal, faster, version of ev_clear_pending */ |
3255 |
inline_speed void |
3256 |
clear_pending (EV_P_ W w) |
3257 |
{ |
3258 |
if (w->pending) |
3259 |
{ |
3260 |
pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
3261 |
w->pending = 0; |
3262 |
} |
3263 |
} |
3264 |
|
3265 |
int |
3266 |
ev_clear_pending (EV_P_ void *w) EV_THROW |
3267 |
{ |
3268 |
W w_ = (W)w; |
3269 |
int pending = w_->pending; |
3270 |
|
3271 |
if (expect_true (pending)) |
3272 |
{ |
3273 |
ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
3274 |
p->w = (W)&pending_w; |
3275 |
w_->pending = 0; |
3276 |
return p->events; |
3277 |
} |
3278 |
else |
3279 |
return 0; |
3280 |
} |
3281 |
|
3282 |
inline_size void |
3283 |
pri_adjust (EV_P_ W w) |
3284 |
{ |
3285 |
int pri = ev_priority (w); |
3286 |
pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
3287 |
pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
3288 |
ev_set_priority (w, pri); |
3289 |
} |
3290 |
|
3291 |
inline_speed void |
3292 |
ev_start (EV_P_ W w, int active) |
3293 |
{ |
3294 |
pri_adjust (EV_A_ w); |
3295 |
w->active = active; |
3296 |
ev_ref (EV_A); |
3297 |
} |
3298 |
|
3299 |
inline_size void |
3300 |
ev_stop (EV_P_ W w) |
3301 |
{ |
3302 |
ev_unref (EV_A); |
3303 |
w->active = 0; |
3304 |
} |
3305 |
|
3306 |
/*****************************************************************************/ |
3307 |
|
3308 |
void noinline |
3309 |
ev_io_start (EV_P_ ev_io *w) EV_THROW |
3310 |
{ |
3311 |
int fd = w->fd; |
3312 |
|
3313 |
if (expect_false (ev_is_active (w))) |
3314 |
return; |
3315 |
|
3316 |
assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
3317 |
assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
3318 |
|
3319 |
EV_FREQUENT_CHECK; |
3320 |
|
3321 |
ev_start (EV_A_ (W)w, 1); |
3322 |
array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
3323 |
wlist_add (&anfds[fd].head, (WL)w); |
3324 |
|
3325 |
/* common bug, apparently */ |
3326 |
assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
3327 |
|
3328 |
fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
3329 |
w->events &= ~EV__IOFDSET; |
3330 |
|
3331 |
EV_FREQUENT_CHECK; |
3332 |
} |
3333 |
|
3334 |
void noinline |
3335 |
ev_io_stop (EV_P_ ev_io *w) EV_THROW |
3336 |
{ |
3337 |
clear_pending (EV_A_ (W)w); |
3338 |
if (expect_false (!ev_is_active (w))) |
3339 |
return; |
3340 |
|
3341 |
assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
3342 |
|
3343 |
EV_FREQUENT_CHECK; |
3344 |
|
3345 |
wlist_del (&anfds[w->fd].head, (WL)w); |
3346 |
ev_stop (EV_A_ (W)w); |
3347 |
|
3348 |
fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
3349 |
|
3350 |
EV_FREQUENT_CHECK; |
3351 |
} |
3352 |
|
3353 |
void noinline |
3354 |
ev_timer_start (EV_P_ ev_timer *w) EV_THROW |
3355 |
{ |
3356 |
if (expect_false (ev_is_active (w))) |
3357 |
return; |
3358 |
|
3359 |
ev_at (w) += mn_now; |
3360 |
|
3361 |
assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
3362 |
|
3363 |
EV_FREQUENT_CHECK; |
3364 |
|
3365 |
++timercnt; |
3366 |
ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
3367 |
array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
3368 |
ANHE_w (timers [ev_active (w)]) = (WT)w; |
3369 |
ANHE_at_cache (timers [ev_active (w)]); |
3370 |
upheap (timers, ev_active (w)); |
3371 |
|
3372 |
EV_FREQUENT_CHECK; |
3373 |
|
3374 |
/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
3375 |
} |
3376 |
|
3377 |
void noinline |
3378 |
ev_timer_stop (EV_P_ ev_timer *w) EV_THROW |
3379 |
{ |
3380 |
clear_pending (EV_A_ (W)w); |
3381 |
if (expect_false (!ev_is_active (w))) |
3382 |
return; |
3383 |
|
3384 |
EV_FREQUENT_CHECK; |
3385 |
|
3386 |
{ |
3387 |
int active = ev_active (w); |
3388 |
|
3389 |
assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
3390 |
|
3391 |
--timercnt; |
3392 |
|
3393 |
if (expect_true (active < timercnt + HEAP0)) |
3394 |
{ |
3395 |
timers [active] = timers [timercnt + HEAP0]; |
3396 |
adjustheap (timers, timercnt, active); |
3397 |
} |
3398 |
} |
3399 |
|
3400 |
ev_at (w) -= mn_now; |
3401 |
|
3402 |
ev_stop (EV_A_ (W)w); |
3403 |
|
3404 |
EV_FREQUENT_CHECK; |
3405 |
} |
3406 |
|
3407 |
void noinline |
3408 |
ev_timer_again (EV_P_ ev_timer *w) EV_THROW |
3409 |
{ |
3410 |
EV_FREQUENT_CHECK; |
3411 |
|
3412 |
clear_pending (EV_A_ (W)w); |
3413 |
|
3414 |
if (ev_is_active (w)) |
3415 |
{ |
3416 |
if (w->repeat) |
3417 |
{ |
3418 |
ev_at (w) = mn_now + w->repeat; |
3419 |
ANHE_at_cache (timers [ev_active (w)]); |
3420 |
adjustheap (timers, timercnt, ev_active (w)); |
3421 |
} |
3422 |
else |
3423 |
ev_timer_stop (EV_A_ w); |
3424 |
} |
3425 |
else if (w->repeat) |
3426 |
{ |
3427 |
ev_at (w) = w->repeat; |
3428 |
ev_timer_start (EV_A_ w); |
3429 |
} |
3430 |
|
3431 |
EV_FREQUENT_CHECK; |
3432 |
} |
3433 |
|
3434 |
ev_tstamp |
3435 |
ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW |
3436 |
{ |
3437 |
return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
3438 |
} |
3439 |
|
3440 |
#if EV_PERIODIC_ENABLE |
3441 |
void noinline |
3442 |
ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW |
3443 |
{ |
3444 |
if (expect_false (ev_is_active (w))) |
3445 |
return; |
3446 |
|
3447 |
if (w->reschedule_cb) |
3448 |
ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
3449 |
else if (w->interval) |
3450 |
{ |
3451 |
assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
3452 |
periodic_recalc (EV_A_ w); |
3453 |
} |
3454 |
else |
3455 |
ev_at (w) = w->offset; |
3456 |
|
3457 |
EV_FREQUENT_CHECK; |
3458 |
|
3459 |
++periodiccnt; |
3460 |
ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
3461 |
array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
3462 |
ANHE_w (periodics [ev_active (w)]) = (WT)w; |
3463 |
ANHE_at_cache (periodics [ev_active (w)]); |
3464 |
upheap (periodics, ev_active (w)); |
3465 |
|
3466 |
EV_FREQUENT_CHECK; |
3467 |
|
3468 |
/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
3469 |
} |
3470 |
|
3471 |
void noinline |
3472 |
ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW |
3473 |
{ |
3474 |
clear_pending (EV_A_ (W)w); |
3475 |
if (expect_false (!ev_is_active (w))) |
3476 |
return; |
3477 |
|
3478 |
EV_FREQUENT_CHECK; |
3479 |
|
3480 |
{ |
3481 |
int active = ev_active (w); |
3482 |
|
3483 |
assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
3484 |
|
3485 |
--periodiccnt; |
3486 |
|
3487 |
if (expect_true (active < periodiccnt + HEAP0)) |
3488 |
{ |
3489 |
periodics [active] = periodics [periodiccnt + HEAP0]; |
3490 |
adjustheap (periodics, periodiccnt, active); |
3491 |
} |
3492 |
} |
3493 |
|
3494 |
ev_stop (EV_A_ (W)w); |
3495 |
|
3496 |
EV_FREQUENT_CHECK; |
3497 |
} |
3498 |
|
3499 |
void noinline |
3500 |
ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW |
3501 |
{ |
3502 |
/* TODO: use adjustheap and recalculation */ |
3503 |
ev_periodic_stop (EV_A_ w); |
3504 |
ev_periodic_start (EV_A_ w); |
3505 |
} |
3506 |
#endif |
3507 |
|
3508 |
#ifndef SA_RESTART |
3509 |
# define SA_RESTART 0 |
3510 |
#endif |
3511 |
|
3512 |
#if EV_SIGNAL_ENABLE |
3513 |
|
3514 |
void noinline |
3515 |
ev_signal_start (EV_P_ ev_signal *w) EV_THROW |
3516 |
{ |
3517 |
if (expect_false (ev_is_active (w))) |
3518 |
return; |
3519 |
|
3520 |
assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
3521 |
|
3522 |
#if EV_MULTIPLICITY |
3523 |
assert (("libev: a signal must not be attached to two different loops", |
3524 |
!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3525 |
|
3526 |
signals [w->signum - 1].loop = EV_A; |
3527 |
#endif |
3528 |
|
3529 |
EV_FREQUENT_CHECK; |
3530 |
|
3531 |
#if EV_USE_SIGNALFD |
3532 |
if (sigfd == -2) |
3533 |
{ |
3534 |
sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
3535 |
if (sigfd < 0 && errno == EINVAL) |
3536 |
sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
3537 |
|
3538 |
if (sigfd >= 0) |
3539 |
{ |
3540 |
fd_intern (sigfd); /* doing it twice will not hurt */ |
3541 |
|
3542 |
sigemptyset (&sigfd_set); |
3543 |
|
3544 |
ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
3545 |
ev_set_priority (&sigfd_w, EV_MAXPRI); |
3546 |
ev_io_start (EV_A_ &sigfd_w); |
3547 |
ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
3548 |
} |
3549 |
} |
3550 |
|
3551 |
if (sigfd >= 0) |
3552 |
{ |
3553 |
/* TODO: check .head */ |
3554 |
sigaddset (&sigfd_set, w->signum); |
3555 |
sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
3556 |
|
3557 |
signalfd (sigfd, &sigfd_set, 0); |
3558 |
} |
3559 |
#endif |
3560 |
|
3561 |
ev_start (EV_A_ (W)w, 1); |
3562 |
wlist_add (&signals [w->signum - 1].head, (WL)w); |
3563 |
|
3564 |
if (!((WL)w)->next) |
3565 |
# if EV_USE_SIGNALFD |
3566 |
if (sigfd < 0) /*TODO*/ |
3567 |
# endif |
3568 |
{ |
3569 |
# ifdef _WIN32 |
3570 |
evpipe_init (EV_A); |
3571 |
|
3572 |
signal (w->signum, ev_sighandler); |
3573 |
# else |
3574 |
struct sigaction sa; |
3575 |
|
3576 |
evpipe_init (EV_A); |
3577 |
|
3578 |
sa.sa_handler = ev_sighandler; |
3579 |
sigfillset (&sa.sa_mask); |
3580 |
sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
3581 |
sigaction (w->signum, &sa, 0); |
3582 |
|
3583 |
if (origflags & EVFLAG_NOSIGMASK) |
3584 |
{ |
3585 |
sigemptyset (&sa.sa_mask); |
3586 |
sigaddset (&sa.sa_mask, w->signum); |
3587 |
sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
3588 |
} |
3589 |
#endif |
3590 |
} |
3591 |
|
3592 |
EV_FREQUENT_CHECK; |
3593 |
} |
3594 |
|
3595 |
void noinline |
3596 |
ev_signal_stop (EV_P_ ev_signal *w) EV_THROW |
3597 |
{ |
3598 |
clear_pending (EV_A_ (W)w); |
3599 |
if (expect_false (!ev_is_active (w))) |
3600 |
return; |
3601 |
|
3602 |
EV_FREQUENT_CHECK; |
3603 |
|
3604 |
wlist_del (&signals [w->signum - 1].head, (WL)w); |
3605 |
ev_stop (EV_A_ (W)w); |
3606 |
|
3607 |
if (!signals [w->signum - 1].head) |
3608 |
{ |
3609 |
#if EV_MULTIPLICITY |
3610 |
signals [w->signum - 1].loop = 0; /* unattach from signal */ |
3611 |
#endif |
3612 |
#if EV_USE_SIGNALFD |
3613 |
if (sigfd >= 0) |
3614 |
{ |
3615 |
sigset_t ss; |
3616 |
|
3617 |
sigemptyset (&ss); |
3618 |
sigaddset (&ss, w->signum); |
3619 |
sigdelset (&sigfd_set, w->signum); |
3620 |
|
3621 |
signalfd (sigfd, &sigfd_set, 0); |
3622 |
sigprocmask (SIG_UNBLOCK, &ss, 0); |
3623 |
} |
3624 |
else |
3625 |
#endif |
3626 |
signal (w->signum, SIG_DFL); |
3627 |
} |
3628 |
|
3629 |
EV_FREQUENT_CHECK; |
3630 |
} |
3631 |
|
3632 |
#endif |
3633 |
|
3634 |
#if EV_CHILD_ENABLE |
3635 |
|
3636 |
void |
3637 |
ev_child_start (EV_P_ ev_child *w) EV_THROW |
3638 |
{ |
3639 |
#if EV_MULTIPLICITY |
3640 |
assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
3641 |
#endif |
3642 |
if (expect_false (ev_is_active (w))) |
3643 |
return; |
3644 |
|
3645 |
EV_FREQUENT_CHECK; |
3646 |
|
3647 |
ev_start (EV_A_ (W)w, 1); |
3648 |
wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
3649 |
|
3650 |
EV_FREQUENT_CHECK; |
3651 |
} |
3652 |
|
3653 |
void |
3654 |
ev_child_stop (EV_P_ ev_child *w) EV_THROW |
3655 |
{ |
3656 |
clear_pending (EV_A_ (W)w); |
3657 |
if (expect_false (!ev_is_active (w))) |
3658 |
return; |
3659 |
|
3660 |
EV_FREQUENT_CHECK; |
3661 |
|
3662 |
wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
3663 |
ev_stop (EV_A_ (W)w); |
3664 |
|
3665 |
EV_FREQUENT_CHECK; |
3666 |
} |
3667 |
|
3668 |
#endif |
3669 |
|
3670 |
#if EV_STAT_ENABLE |
3671 |
|
3672 |
# ifdef _WIN32 |
3673 |
# undef lstat |
3674 |
# define lstat(a,b) _stati64 (a,b) |
3675 |
# endif |
3676 |
|
3677 |
#define DEF_STAT_INTERVAL 5.0074891 |
3678 |
#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
3679 |
#define MIN_STAT_INTERVAL 0.1074891 |
3680 |
|
3681 |
static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
3682 |
|
3683 |
#if EV_USE_INOTIFY |
3684 |
|
3685 |
/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
3686 |
# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3687 |
|
3688 |
static void noinline |
3689 |
infy_add (EV_P_ ev_stat *w) |
3690 |
{ |
3691 |
w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
3692 |
|
3693 |
if (w->wd >= 0) |
3694 |
{ |
3695 |
struct statfs sfs; |
3696 |
|
3697 |
/* now local changes will be tracked by inotify, but remote changes won't */ |
3698 |
/* unless the filesystem is known to be local, we therefore still poll */ |
3699 |
/* also do poll on <2.6.25, but with normal frequency */ |
3700 |
|
3701 |
if (!fs_2625) |
3702 |
w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3703 |
else if (!statfs (w->path, &sfs) |
3704 |
&& (sfs.f_type == 0x1373 /* devfs */ |
3705 |
|| sfs.f_type == 0xEF53 /* ext2/3 */ |
3706 |
|| sfs.f_type == 0x3153464a /* jfs */ |
3707 |
|| sfs.f_type == 0x52654973 /* reiser3 */ |
3708 |
|| sfs.f_type == 0x01021994 /* tempfs */ |
3709 |
|| sfs.f_type == 0x58465342 /* xfs */)) |
3710 |
w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
3711 |
else |
3712 |
w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
3713 |
} |
3714 |
else |
3715 |
{ |
3716 |
/* can't use inotify, continue to stat */ |
3717 |
w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3718 |
|
3719 |
/* if path is not there, monitor some parent directory for speedup hints */ |
3720 |
/* note that exceeding the hardcoded path limit is not a correctness issue, */ |
3721 |
/* but an efficiency issue only */ |
3722 |
if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
3723 |
{ |
3724 |
char path [4096]; |
3725 |
strcpy (path, w->path); |
3726 |
|
3727 |
do |
3728 |
{ |
3729 |
int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
3730 |
| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
3731 |
|
3732 |
char *pend = strrchr (path, '/'); |
3733 |
|
3734 |
if (!pend || pend == path) |
3735 |
break; |
3736 |
|
3737 |
*pend = 0; |
3738 |
w->wd = inotify_add_watch (fs_fd, path, mask); |
3739 |
} |
3740 |
while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3741 |
} |
3742 |
} |
3743 |
|
3744 |
if (w->wd >= 0) |
3745 |
wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
3746 |
|
3747 |
/* now re-arm timer, if required */ |
3748 |
if (ev_is_active (&w->timer)) ev_ref (EV_A); |
3749 |
ev_timer_again (EV_A_ &w->timer); |
3750 |
if (ev_is_active (&w->timer)) ev_unref (EV_A); |
3751 |
} |
3752 |
|
3753 |
static void noinline |
3754 |
infy_del (EV_P_ ev_stat *w) |
3755 |
{ |
3756 |
int slot; |
3757 |
int wd = w->wd; |
3758 |
|
3759 |
if (wd < 0) |
3760 |
return; |
3761 |
|
3762 |
w->wd = -2; |
3763 |
slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
3764 |
wlist_del (&fs_hash [slot].head, (WL)w); |
3765 |
|
3766 |
/* remove this watcher, if others are watching it, they will rearm */ |
3767 |
inotify_rm_watch (fs_fd, wd); |
3768 |
} |
3769 |
|
3770 |
static void noinline |
3771 |
infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
3772 |
{ |
3773 |
if (slot < 0) |
3774 |
/* overflow, need to check for all hash slots */ |
3775 |
for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
3776 |
infy_wd (EV_A_ slot, wd, ev); |
3777 |
else |
3778 |
{ |
3779 |
WL w_; |
3780 |
|
3781 |
for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
3782 |
{ |
3783 |
ev_stat *w = (ev_stat *)w_; |
3784 |
w_ = w_->next; /* lets us remove this watcher and all before it */ |
3785 |
|
3786 |
if (w->wd == wd || wd == -1) |
3787 |
{ |
3788 |
if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
3789 |
{ |
3790 |
wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
3791 |
w->wd = -1; |
3792 |
infy_add (EV_A_ w); /* re-add, no matter what */ |
3793 |
} |
3794 |
|
3795 |
stat_timer_cb (EV_A_ &w->timer, 0); |
3796 |
} |
3797 |
} |
3798 |
} |
3799 |
} |
3800 |
|
3801 |
static void |
3802 |
infy_cb (EV_P_ ev_io *w, int revents) |
3803 |
{ |
3804 |
char buf [EV_INOTIFY_BUFSIZE]; |
3805 |
int ofs; |
3806 |
int len = read (fs_fd, buf, sizeof (buf)); |
3807 |
|
3808 |
for (ofs = 0; ofs < len; ) |
3809 |
{ |
3810 |
struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
3811 |
infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3812 |
ofs += sizeof (struct inotify_event) + ev->len; |
3813 |
} |
3814 |
} |
3815 |
|
3816 |
inline_size void ecb_cold |
3817 |
ev_check_2625 (EV_P) |
3818 |
{ |
3819 |
/* kernels < 2.6.25 are borked |
3820 |
* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3821 |
*/ |
3822 |
if (ev_linux_version () < 0x020619) |
3823 |
return; |
3824 |
|
3825 |
fs_2625 = 1; |
3826 |
} |
3827 |
|
3828 |
inline_size int |
3829 |
infy_newfd (void) |
3830 |
{ |
3831 |
#if defined IN_CLOEXEC && defined IN_NONBLOCK |
3832 |
int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
3833 |
if (fd >= 0) |
3834 |
return fd; |
3835 |
#endif |
3836 |
return inotify_init (); |
3837 |
} |
3838 |
|
3839 |
inline_size void |
3840 |
infy_init (EV_P) |
3841 |
{ |
3842 |
if (fs_fd != -2) |
3843 |
return; |
3844 |
|
3845 |
fs_fd = -1; |
3846 |
|
3847 |
ev_check_2625 (EV_A); |
3848 |
|
3849 |
fs_fd = infy_newfd (); |
3850 |
|
3851 |
if (fs_fd >= 0) |
3852 |
{ |
3853 |
fd_intern (fs_fd); |
3854 |
ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
3855 |
ev_set_priority (&fs_w, EV_MAXPRI); |
3856 |
ev_io_start (EV_A_ &fs_w); |
3857 |
ev_unref (EV_A); |
3858 |
} |
3859 |
} |
3860 |
|
3861 |
inline_size void |
3862 |
infy_fork (EV_P) |
3863 |
{ |
3864 |
int slot; |
3865 |
|
3866 |
if (fs_fd < 0) |
3867 |
return; |
3868 |
|
3869 |
ev_ref (EV_A); |
3870 |
ev_io_stop (EV_A_ &fs_w); |
3871 |
close (fs_fd); |
3872 |
fs_fd = infy_newfd (); |
3873 |
|
3874 |
if (fs_fd >= 0) |
3875 |
{ |
3876 |
fd_intern (fs_fd); |
3877 |
ev_io_set (&fs_w, fs_fd, EV_READ); |
3878 |
ev_io_start (EV_A_ &fs_w); |
3879 |
ev_unref (EV_A); |
3880 |
} |
3881 |
|
3882 |
for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
3883 |
{ |
3884 |
WL w_ = fs_hash [slot].head; |
3885 |
fs_hash [slot].head = 0; |
3886 |
|
3887 |
while (w_) |
3888 |
{ |
3889 |
ev_stat *w = (ev_stat *)w_; |
3890 |
w_ = w_->next; /* lets us add this watcher */ |
3891 |
|
3892 |
w->wd = -1; |
3893 |
|
3894 |
if (fs_fd >= 0) |
3895 |
infy_add (EV_A_ w); /* re-add, no matter what */ |
3896 |
else |
3897 |
{ |
3898 |
w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3899 |
if (ev_is_active (&w->timer)) ev_ref (EV_A); |
3900 |
ev_timer_again (EV_A_ &w->timer); |
3901 |
if (ev_is_active (&w->timer)) ev_unref (EV_A); |
3902 |
} |
3903 |
} |
3904 |
} |
3905 |
} |
3906 |
|
3907 |
#endif |
3908 |
|
3909 |
#ifdef _WIN32 |
3910 |
# define EV_LSTAT(p,b) _stati64 (p, b) |
3911 |
#else |
3912 |
# define EV_LSTAT(p,b) lstat (p, b) |
3913 |
#endif |
3914 |
|
3915 |
void |
3916 |
ev_stat_stat (EV_P_ ev_stat *w) EV_THROW |
3917 |
{ |
3918 |
if (lstat (w->path, &w->attr) < 0) |
3919 |
w->attr.st_nlink = 0; |
3920 |
else if (!w->attr.st_nlink) |
3921 |
w->attr.st_nlink = 1; |
3922 |
} |
3923 |
|
3924 |
static void noinline |
3925 |
stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3926 |
{ |
3927 |
ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3928 |
|
3929 |
ev_statdata prev = w->attr; |
3930 |
ev_stat_stat (EV_A_ w); |
3931 |
|
3932 |
/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3933 |
if ( |
3934 |
prev.st_dev != w->attr.st_dev |
3935 |
|| prev.st_ino != w->attr.st_ino |
3936 |
|| prev.st_mode != w->attr.st_mode |
3937 |
|| prev.st_nlink != w->attr.st_nlink |
3938 |
|| prev.st_uid != w->attr.st_uid |
3939 |
|| prev.st_gid != w->attr.st_gid |
3940 |
|| prev.st_rdev != w->attr.st_rdev |
3941 |
|| prev.st_size != w->attr.st_size |
3942 |
|| prev.st_atime != w->attr.st_atime |
3943 |
|| prev.st_mtime != w->attr.st_mtime |
3944 |
|| prev.st_ctime != w->attr.st_ctime |
3945 |
) { |
3946 |
/* we only update w->prev on actual differences */ |
3947 |
/* in case we test more often than invoke the callback, */ |
3948 |
/* to ensure that prev is always different to attr */ |
3949 |
w->prev = prev; |
3950 |
|
3951 |
#if EV_USE_INOTIFY |
3952 |
if (fs_fd >= 0) |
3953 |
{ |
3954 |
infy_del (EV_A_ w); |
3955 |
infy_add (EV_A_ w); |
3956 |
ev_stat_stat (EV_A_ w); /* avoid race... */ |
3957 |
} |
3958 |
#endif |
3959 |
|
3960 |
ev_feed_event (EV_A_ w, EV_STAT); |
3961 |
} |
3962 |
} |
3963 |
|
3964 |
void |
3965 |
ev_stat_start (EV_P_ ev_stat *w) EV_THROW |
3966 |
{ |
3967 |
if (expect_false (ev_is_active (w))) |
3968 |
return; |
3969 |
|
3970 |
ev_stat_stat (EV_A_ w); |
3971 |
|
3972 |
if (w->interval < MIN_STAT_INTERVAL && w->interval) |
3973 |
w->interval = MIN_STAT_INTERVAL; |
3974 |
|
3975 |
ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
3976 |
ev_set_priority (&w->timer, ev_priority (w)); |
3977 |
|
3978 |
#if EV_USE_INOTIFY |
3979 |
infy_init (EV_A); |
3980 |
|
3981 |
if (fs_fd >= 0) |
3982 |
infy_add (EV_A_ w); |
3983 |
else |
3984 |
#endif |
3985 |
{ |
3986 |
ev_timer_again (EV_A_ &w->timer); |
3987 |
ev_unref (EV_A); |
3988 |
} |
3989 |
|
3990 |
ev_start (EV_A_ (W)w, 1); |
3991 |
|
3992 |
EV_FREQUENT_CHECK; |
3993 |
} |
3994 |
|
3995 |
void |
3996 |
ev_stat_stop (EV_P_ ev_stat *w) EV_THROW |
3997 |
{ |
3998 |
clear_pending (EV_A_ (W)w); |
3999 |
if (expect_false (!ev_is_active (w))) |
4000 |
return; |
4001 |
|
4002 |
EV_FREQUENT_CHECK; |
4003 |
|
4004 |
#if EV_USE_INOTIFY |
4005 |
infy_del (EV_A_ w); |
4006 |
#endif |
4007 |
|
4008 |
if (ev_is_active (&w->timer)) |
4009 |
{ |
4010 |
ev_ref (EV_A); |
4011 |
ev_timer_stop (EV_A_ &w->timer); |
4012 |
} |
4013 |
|
4014 |
ev_stop (EV_A_ (W)w); |
4015 |
|
4016 |
EV_FREQUENT_CHECK; |
4017 |
} |
4018 |
#endif |
4019 |
|
4020 |
#if EV_IDLE_ENABLE |
4021 |
void |
4022 |
ev_idle_start (EV_P_ ev_idle *w) EV_THROW |
4023 |
{ |
4024 |
if (expect_false (ev_is_active (w))) |
4025 |
return; |
4026 |
|
4027 |
pri_adjust (EV_A_ (W)w); |
4028 |
|
4029 |
EV_FREQUENT_CHECK; |
4030 |
|
4031 |
{ |
4032 |
int active = ++idlecnt [ABSPRI (w)]; |
4033 |
|
4034 |
++idleall; |
4035 |
ev_start (EV_A_ (W)w, active); |
4036 |
|
4037 |
array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
4038 |
idles [ABSPRI (w)][active - 1] = w; |
4039 |
} |
4040 |
|
4041 |
EV_FREQUENT_CHECK; |
4042 |
} |
4043 |
|
4044 |
void |
4045 |
ev_idle_stop (EV_P_ ev_idle *w) EV_THROW |
4046 |
{ |
4047 |
clear_pending (EV_A_ (W)w); |
4048 |
if (expect_false (!ev_is_active (w))) |
4049 |
return; |
4050 |
|
4051 |
EV_FREQUENT_CHECK; |
4052 |
|
4053 |
{ |
4054 |
int active = ev_active (w); |
4055 |
|
4056 |
idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
4057 |
ev_active (idles [ABSPRI (w)][active - 1]) = active; |
4058 |
|
4059 |
ev_stop (EV_A_ (W)w); |
4060 |
--idleall; |
4061 |
} |
4062 |
|
4063 |
EV_FREQUENT_CHECK; |
4064 |
} |
4065 |
#endif |
4066 |
|
4067 |
#if EV_PREPARE_ENABLE |
4068 |
void |
4069 |
ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW |
4070 |
{ |
4071 |
if (expect_false (ev_is_active (w))) |
4072 |
return; |
4073 |
|
4074 |
EV_FREQUENT_CHECK; |
4075 |
|
4076 |
ev_start (EV_A_ (W)w, ++preparecnt); |
4077 |
array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
4078 |
prepares [preparecnt - 1] = w; |
4079 |
|
4080 |
EV_FREQUENT_CHECK; |
4081 |
} |
4082 |
|
4083 |
void |
4084 |
ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW |
4085 |
{ |
4086 |
clear_pending (EV_A_ (W)w); |
4087 |
if (expect_false (!ev_is_active (w))) |
4088 |
return; |
4089 |
|
4090 |
EV_FREQUENT_CHECK; |
4091 |
|
4092 |
{ |
4093 |
int active = ev_active (w); |
4094 |
|
4095 |
prepares [active - 1] = prepares [--preparecnt]; |
4096 |
ev_active (prepares [active - 1]) = active; |
4097 |
} |
4098 |
|
4099 |
ev_stop (EV_A_ (W)w); |
4100 |
|
4101 |
EV_FREQUENT_CHECK; |
4102 |
} |
4103 |
#endif |
4104 |
|
4105 |
#if EV_CHECK_ENABLE |
4106 |
void |
4107 |
ev_check_start (EV_P_ ev_check *w) EV_THROW |
4108 |
{ |
4109 |
if (expect_false (ev_is_active (w))) |
4110 |
return; |
4111 |
|
4112 |
EV_FREQUENT_CHECK; |
4113 |
|
4114 |
ev_start (EV_A_ (W)w, ++checkcnt); |
4115 |
array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
4116 |
checks [checkcnt - 1] = w; |
4117 |
|
4118 |
EV_FREQUENT_CHECK; |
4119 |
} |
4120 |
|
4121 |
void |
4122 |
ev_check_stop (EV_P_ ev_check *w) EV_THROW |
4123 |
{ |
4124 |
clear_pending (EV_A_ (W)w); |
4125 |
if (expect_false (!ev_is_active (w))) |
4126 |
return; |
4127 |
|
4128 |
EV_FREQUENT_CHECK; |
4129 |
|
4130 |
{ |
4131 |
int active = ev_active (w); |
4132 |
|
4133 |
checks [active - 1] = checks [--checkcnt]; |
4134 |
ev_active (checks [active - 1]) = active; |
4135 |
} |
4136 |
|
4137 |
ev_stop (EV_A_ (W)w); |
4138 |
|
4139 |
EV_FREQUENT_CHECK; |
4140 |
} |
4141 |
#endif |
4142 |
|
4143 |
#if EV_EMBED_ENABLE |
4144 |
void noinline |
4145 |
ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW |
4146 |
{ |
4147 |
ev_run (w->other, EVRUN_NOWAIT); |
4148 |
} |
4149 |
|
4150 |
static void |
4151 |
embed_io_cb (EV_P_ ev_io *io, int revents) |
4152 |
{ |
4153 |
ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
4154 |
|
4155 |
if (ev_cb (w)) |
4156 |
ev_feed_event (EV_A_ (W)w, EV_EMBED); |
4157 |
else |
4158 |
ev_run (w->other, EVRUN_NOWAIT); |
4159 |
} |
4160 |
|
4161 |
static void |
4162 |
embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
4163 |
{ |
4164 |
ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
4165 |
|
4166 |
{ |
4167 |
EV_P = w->other; |
4168 |
|
4169 |
while (fdchangecnt) |
4170 |
{ |
4171 |
fd_reify (EV_A); |
4172 |
ev_run (EV_A_ EVRUN_NOWAIT); |
4173 |
} |
4174 |
} |
4175 |
} |
4176 |
|
4177 |
static void |
4178 |
embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
4179 |
{ |
4180 |
ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
4181 |
|
4182 |
ev_embed_stop (EV_A_ w); |
4183 |
|
4184 |
{ |
4185 |
EV_P = w->other; |
4186 |
|
4187 |
ev_loop_fork (EV_A); |
4188 |
ev_run (EV_A_ EVRUN_NOWAIT); |
4189 |
} |
4190 |
|
4191 |
ev_embed_start (EV_A_ w); |
4192 |
} |
4193 |
|
4194 |
#if 0 |
4195 |
static void |
4196 |
embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
4197 |
{ |
4198 |
ev_idle_stop (EV_A_ idle); |
4199 |
} |
4200 |
#endif |
4201 |
|
4202 |
void |
4203 |
ev_embed_start (EV_P_ ev_embed *w) EV_THROW |
4204 |
{ |
4205 |
if (expect_false (ev_is_active (w))) |
4206 |
return; |
4207 |
|
4208 |
{ |
4209 |
EV_P = w->other; |
4210 |
assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
4211 |
ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
4212 |
} |
4213 |
|
4214 |
EV_FREQUENT_CHECK; |
4215 |
|
4216 |
ev_set_priority (&w->io, ev_priority (w)); |
4217 |
ev_io_start (EV_A_ &w->io); |
4218 |
|
4219 |
ev_prepare_init (&w->prepare, embed_prepare_cb); |
4220 |
ev_set_priority (&w->prepare, EV_MINPRI); |
4221 |
ev_prepare_start (EV_A_ &w->prepare); |
4222 |
|
4223 |
ev_fork_init (&w->fork, embed_fork_cb); |
4224 |
ev_fork_start (EV_A_ &w->fork); |
4225 |
|
4226 |
/*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
4227 |
|
4228 |
ev_start (EV_A_ (W)w, 1); |
4229 |
|
4230 |
EV_FREQUENT_CHECK; |
4231 |
} |
4232 |
|
4233 |
void |
4234 |
ev_embed_stop (EV_P_ ev_embed *w) EV_THROW |
4235 |
{ |
4236 |
clear_pending (EV_A_ (W)w); |
4237 |
if (expect_false (!ev_is_active (w))) |
4238 |
return; |
4239 |
|
4240 |
EV_FREQUENT_CHECK; |
4241 |
|
4242 |
ev_io_stop (EV_A_ &w->io); |
4243 |
ev_prepare_stop (EV_A_ &w->prepare); |
4244 |
ev_fork_stop (EV_A_ &w->fork); |
4245 |
|
4246 |
ev_stop (EV_A_ (W)w); |
4247 |
|
4248 |
EV_FREQUENT_CHECK; |
4249 |
} |
4250 |
#endif |
4251 |
|
4252 |
#if EV_FORK_ENABLE |
4253 |
void |
4254 |
ev_fork_start (EV_P_ ev_fork *w) EV_THROW |
4255 |
{ |
4256 |
if (expect_false (ev_is_active (w))) |
4257 |
return; |
4258 |
|
4259 |
EV_FREQUENT_CHECK; |
4260 |
|
4261 |
ev_start (EV_A_ (W)w, ++forkcnt); |
4262 |
array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
4263 |
forks [forkcnt - 1] = w; |
4264 |
|
4265 |
EV_FREQUENT_CHECK; |
4266 |
} |
4267 |
|
4268 |
void |
4269 |
ev_fork_stop (EV_P_ ev_fork *w) EV_THROW |
4270 |
{ |
4271 |
clear_pending (EV_A_ (W)w); |
4272 |
if (expect_false (!ev_is_active (w))) |
4273 |
return; |
4274 |
|
4275 |
EV_FREQUENT_CHECK; |
4276 |
|
4277 |
{ |
4278 |
int active = ev_active (w); |
4279 |
|
4280 |
forks [active - 1] = forks [--forkcnt]; |
4281 |
ev_active (forks [active - 1]) = active; |
4282 |
} |
4283 |
|
4284 |
ev_stop (EV_A_ (W)w); |
4285 |
|
4286 |
EV_FREQUENT_CHECK; |
4287 |
} |
4288 |
#endif |
4289 |
|
4290 |
#if EV_CLEANUP_ENABLE |
4291 |
void |
4292 |
ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW |
4293 |
{ |
4294 |
if (expect_false (ev_is_active (w))) |
4295 |
return; |
4296 |
|
4297 |
EV_FREQUENT_CHECK; |
4298 |
|
4299 |
ev_start (EV_A_ (W)w, ++cleanupcnt); |
4300 |
array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
4301 |
cleanups [cleanupcnt - 1] = w; |
4302 |
|
4303 |
/* cleanup watchers should never keep a refcount on the loop */ |
4304 |
ev_unref (EV_A); |
4305 |
EV_FREQUENT_CHECK; |
4306 |
} |
4307 |
|
4308 |
void |
4309 |
ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW |
4310 |
{ |
4311 |
clear_pending (EV_A_ (W)w); |
4312 |
if (expect_false (!ev_is_active (w))) |
4313 |
return; |
4314 |
|
4315 |
EV_FREQUENT_CHECK; |
4316 |
ev_ref (EV_A); |
4317 |
|
4318 |
{ |
4319 |
int active = ev_active (w); |
4320 |
|
4321 |
cleanups [active - 1] = cleanups [--cleanupcnt]; |
4322 |
ev_active (cleanups [active - 1]) = active; |
4323 |
} |
4324 |
|
4325 |
ev_stop (EV_A_ (W)w); |
4326 |
|
4327 |
EV_FREQUENT_CHECK; |
4328 |
} |
4329 |
#endif |
4330 |
|
4331 |
#if EV_ASYNC_ENABLE |
4332 |
void |
4333 |
ev_async_start (EV_P_ ev_async *w) EV_THROW |
4334 |
{ |
4335 |
if (expect_false (ev_is_active (w))) |
4336 |
return; |
4337 |
|
4338 |
w->sent = 0; |
4339 |
|
4340 |
evpipe_init (EV_A); |
4341 |
|
4342 |
EV_FREQUENT_CHECK; |
4343 |
|
4344 |
ev_start (EV_A_ (W)w, ++asynccnt); |
4345 |
array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
4346 |
asyncs [asynccnt - 1] = w; |
4347 |
|
4348 |
EV_FREQUENT_CHECK; |
4349 |
} |
4350 |
|
4351 |
void |
4352 |
ev_async_stop (EV_P_ ev_async *w) EV_THROW |
4353 |
{ |
4354 |
clear_pending (EV_A_ (W)w); |
4355 |
if (expect_false (!ev_is_active (w))) |
4356 |
return; |
4357 |
|
4358 |
EV_FREQUENT_CHECK; |
4359 |
|
4360 |
{ |
4361 |
int active = ev_active (w); |
4362 |
|
4363 |
asyncs [active - 1] = asyncs [--asynccnt]; |
4364 |
ev_active (asyncs [active - 1]) = active; |
4365 |
} |
4366 |
|
4367 |
ev_stop (EV_A_ (W)w); |
4368 |
|
4369 |
EV_FREQUENT_CHECK; |
4370 |
} |
4371 |
|
4372 |
void |
4373 |
ev_async_send (EV_P_ ev_async *w) EV_THROW |
4374 |
{ |
4375 |
w->sent = 1; |
4376 |
evpipe_write (EV_A_ &async_pending); |
4377 |
} |
4378 |
#endif |
4379 |
|
4380 |
/*****************************************************************************/ |
4381 |
|
4382 |
struct ev_once |
4383 |
{ |
4384 |
ev_io io; |
4385 |
ev_timer to; |
4386 |
void (*cb)(int revents, void *arg); |
4387 |
void *arg; |
4388 |
}; |
4389 |
|
4390 |
static void |
4391 |
once_cb (EV_P_ struct ev_once *once, int revents) |
4392 |
{ |
4393 |
void (*cb)(int revents, void *arg) = once->cb; |
4394 |
void *arg = once->arg; |
4395 |
|
4396 |
ev_io_stop (EV_A_ &once->io); |
4397 |
ev_timer_stop (EV_A_ &once->to); |
4398 |
ev_free (once); |
4399 |
|
4400 |
cb (revents, arg); |
4401 |
} |
4402 |
|
4403 |
static void |
4404 |
once_cb_io (EV_P_ ev_io *w, int revents) |
4405 |
{ |
4406 |
struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
4407 |
|
4408 |
once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
4409 |
} |
4410 |
|
4411 |
static void |
4412 |
once_cb_to (EV_P_ ev_timer *w, int revents) |
4413 |
{ |
4414 |
struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
4415 |
|
4416 |
once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
4417 |
} |
4418 |
|
4419 |
void |
4420 |
ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW |
4421 |
{ |
4422 |
struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
4423 |
|
4424 |
if (expect_false (!once)) |
4425 |
{ |
4426 |
cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
4427 |
return; |
4428 |
} |
4429 |
|
4430 |
once->cb = cb; |
4431 |
once->arg = arg; |
4432 |
|
4433 |
ev_init (&once->io, once_cb_io); |
4434 |
if (fd >= 0) |
4435 |
{ |
4436 |
ev_io_set (&once->io, fd, events); |
4437 |
ev_io_start (EV_A_ &once->io); |
4438 |
} |
4439 |
|
4440 |
ev_init (&once->to, once_cb_to); |
4441 |
if (timeout >= 0.) |
4442 |
{ |
4443 |
ev_timer_set (&once->to, timeout, 0.); |
4444 |
ev_timer_start (EV_A_ &once->to); |
4445 |
} |
4446 |
} |
4447 |
|
4448 |
/*****************************************************************************/ |
4449 |
|
4450 |
#if EV_WALK_ENABLE |
4451 |
void ecb_cold |
4452 |
ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW |
4453 |
{ |
4454 |
int i, j; |
4455 |
ev_watcher_list *wl, *wn; |
4456 |
|
4457 |
if (types & (EV_IO | EV_EMBED)) |
4458 |
for (i = 0; i < anfdmax; ++i) |
4459 |
for (wl = anfds [i].head; wl; ) |
4460 |
{ |
4461 |
wn = wl->next; |
4462 |
|
4463 |
#if EV_EMBED_ENABLE |
4464 |
if (ev_cb ((ev_io *)wl) == embed_io_cb) |
4465 |
{ |
4466 |
if (types & EV_EMBED) |
4467 |
cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
4468 |
} |
4469 |
else |
4470 |
#endif |
4471 |
#if EV_USE_INOTIFY |
4472 |
if (ev_cb ((ev_io *)wl) == infy_cb) |
4473 |
; |
4474 |
else |
4475 |
#endif |
4476 |
if ((ev_io *)wl != &pipe_w) |
4477 |
if (types & EV_IO) |
4478 |
cb (EV_A_ EV_IO, wl); |
4479 |
|
4480 |
wl = wn; |
4481 |
} |
4482 |
|
4483 |
if (types & (EV_TIMER | EV_STAT)) |
4484 |
for (i = timercnt + HEAP0; i-- > HEAP0; ) |
4485 |
#if EV_STAT_ENABLE |
4486 |
/*TODO: timer is not always active*/ |
4487 |
if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
4488 |
{ |
4489 |
if (types & EV_STAT) |
4490 |
cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
4491 |
} |
4492 |
else |
4493 |
#endif |
4494 |
if (types & EV_TIMER) |
4495 |
cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
4496 |
|
4497 |
#if EV_PERIODIC_ENABLE |
4498 |
if (types & EV_PERIODIC) |
4499 |
for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
4500 |
cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
4501 |
#endif |
4502 |
|
4503 |
#if EV_IDLE_ENABLE |
4504 |
if (types & EV_IDLE) |
4505 |
for (j = NUMPRI; j--; ) |
4506 |
for (i = idlecnt [j]; i--; ) |
4507 |
cb (EV_A_ EV_IDLE, idles [j][i]); |
4508 |
#endif |
4509 |
|
4510 |
#if EV_FORK_ENABLE |
4511 |
if (types & EV_FORK) |
4512 |
for (i = forkcnt; i--; ) |
4513 |
if (ev_cb (forks [i]) != embed_fork_cb) |
4514 |
cb (EV_A_ EV_FORK, forks [i]); |
4515 |
#endif |
4516 |
|
4517 |
#if EV_ASYNC_ENABLE |
4518 |
if (types & EV_ASYNC) |
4519 |
for (i = asynccnt; i--; ) |
4520 |
cb (EV_A_ EV_ASYNC, asyncs [i]); |
4521 |
#endif |
4522 |
|
4523 |
#if EV_PREPARE_ENABLE |
4524 |
if (types & EV_PREPARE) |
4525 |
for (i = preparecnt; i--; ) |
4526 |
# if EV_EMBED_ENABLE |
4527 |
if (ev_cb (prepares [i]) != embed_prepare_cb) |
4528 |
# endif |
4529 |
cb (EV_A_ EV_PREPARE, prepares [i]); |
4530 |
#endif |
4531 |
|
4532 |
#if EV_CHECK_ENABLE |
4533 |
if (types & EV_CHECK) |
4534 |
for (i = checkcnt; i--; ) |
4535 |
cb (EV_A_ EV_CHECK, checks [i]); |
4536 |
#endif |
4537 |
|
4538 |
#if EV_SIGNAL_ENABLE |
4539 |
if (types & EV_SIGNAL) |
4540 |
for (i = 0; i < EV_NSIG - 1; ++i) |
4541 |
for (wl = signals [i].head; wl; ) |
4542 |
{ |
4543 |
wn = wl->next; |
4544 |
cb (EV_A_ EV_SIGNAL, wl); |
4545 |
wl = wn; |
4546 |
} |
4547 |
#endif |
4548 |
|
4549 |
#if EV_CHILD_ENABLE |
4550 |
if (types & EV_CHILD) |
4551 |
for (i = (EV_PID_HASHSIZE); i--; ) |
4552 |
for (wl = childs [i]; wl; ) |
4553 |
{ |
4554 |
wn = wl->next; |
4555 |
cb (EV_A_ EV_CHILD, wl); |
4556 |
wl = wn; |
4557 |
} |
4558 |
#endif |
4559 |
/* EV_STAT 0x00001000 /* stat data changed */ |
4560 |
/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
4561 |
} |
4562 |
#endif |
4563 |
|
4564 |
#if EV_MULTIPLICITY |
4565 |
#include "ev_wrap.h" |
4566 |
#endif |
4567 |
|