diff options
Diffstat (limited to 'framework/src/audit/src/libev')
| -rw-r--r-- | framework/src/audit/src/libev/Makefile.am | 29 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/README | 58 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/ev.c | 4971 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/ev.h | 854 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/ev_epoll.c | 279 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/ev_poll.c | 148 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/ev_select.c | 314 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/ev_vars.h | 204 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/ev_wrap.h | 200 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/event.c | 425 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/event.h | 177 | ||||
| -rw-r--r-- | framework/src/audit/src/libev/libev.m4 | 42 |
12 files changed, 7701 insertions, 0 deletions
diff --git a/framework/src/audit/src/libev/Makefile.am b/framework/src/audit/src/libev/Makefile.am new file mode 100644 index 00000000..a35e7b0d --- /dev/null +++ b/framework/src/audit/src/libev/Makefile.am @@ -0,0 +1,29 @@ +# Makefile.am-- +# Copyright 2008,2011-12 Red Hat Inc., Durham, North Carolina. +# All Rights Reserved. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# Authors: +# Steve Grubb <sgrubb@redhat.com> +# +VERSION_INFO = 4:0:0 +EXTRA_DIST = README ev_epoll.c ev_poll.c ev_select.c libev.m4 +AM_CFLAGS = -fPIC -DPIC -g -fno-strict-aliasing ${DEBUG} + +noinst_HEADERS = ev.h ev_vars.h ev_wrap.h event.h +noinst_LIBRARIES = libev.a + +libev_a_SOURCES = ev.c event.c diff --git a/framework/src/audit/src/libev/README b/framework/src/audit/src/libev/README new file mode 100644 index 00000000..31f61938 --- /dev/null +++ b/framework/src/audit/src/libev/README @@ -0,0 +1,58 @@ +libev is a high-performance event loop/event model with lots of features. +(see benchmark at http://libev.schmorp.de/bench.html) + + +ABOUT + + Homepage: http://software.schmorp.de/pkg/libev + Mailinglist: libev@lists.schmorp.de + http://lists.schmorp.de/cgi-bin/mailman/listinfo/libev + Library Documentation: http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod + + Libev is modelled (very losely) after libevent and the Event perl + module, but is faster, scales better and is more correct, and also more + featureful. And also smaller. Yay. + + Some of the specialties of libev not commonly found elsewhere are: + + - extensive and detailed, readable documentation (not doxygen garbage). + - fully supports fork, can detect fork in various ways and automatically + re-arms kernel mechanisms that do not support fork. + - highly optimised select, poll, epoll, kqueue and event ports backends. + - filesystem object (path) watching (with optional linux inotify support). + - wallclock-based times (using absolute time, cron-like). + - relative timers/timeouts (handle time jumps). + - fast intra-thread communication between multiple + event loops (with optional fast linux eventfd backend). + - extremely easy to embed (fully documented, no dependencies, + autoconf supported but optional). + - very small codebase, no bloated library, simple code. + - fully extensible by being able to plug into the event loop, + integrate other event loops, integrate other event loop users. + - very little memory use (small watchers, small event loop data). + - optional C++ interface allowing method and function callbacks + at no extra memory or runtime overhead. + - optional Perl interface with similar characteristics (capable + of running Glib/Gtk2 on libev). + - support for other languages (multiple C++ interfaces, D, Ruby, + Python) available from third-parties. + + Examples of programs that embed libev: the EV perl module, node.js, + auditd, rxvt-unicode, gvpe (GNU Virtual Private Ethernet), the + Deliantra MMORPG server (http://www.deliantra.net/), Rubinius (a + next-generation Ruby VM), the Ebb web server, the Rev event toolkit. + + +CONTRIBUTORS + + libev was written and designed by Marc Lehmann and Emanuele Giaquinta. + + The following people sent in patches or made other noteworthy + contributions to the design (for minor patches, see the Changes + file. If I forgot to include you, please shout at me, it was an + accident): + + W.C.A. Wijngaards + Christopher Layne + Chris Brody + diff --git a/framework/src/audit/src/libev/ev.c b/framework/src/audit/src/libev/ev.c new file mode 100644 index 00000000..3e7013f9 --- /dev/null +++ b/framework/src/audit/src/libev/ev.c @@ -0,0 +1,4971 @@ +/* + * libev event processing core, watcher management + * + * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +/* this big block deduces configuration from config.h */ +#ifndef EV_STANDALONE +# ifdef EV_CONFIG_H +# include EV_CONFIG_H +# else +# include "config.h" +# endif + +# if HAVE_FLOOR +# ifndef EV_USE_FLOOR +# define EV_USE_FLOOR 1 +# endif +# endif + +# if HAVE_CLOCK_SYSCALL +# ifndef EV_USE_CLOCK_SYSCALL +# define EV_USE_CLOCK_SYSCALL 1 +# ifndef EV_USE_REALTIME +# define EV_USE_REALTIME 0 +# endif +# ifndef EV_USE_MONOTONIC +# define EV_USE_MONOTONIC 1 +# endif +# endif +# elif !defined EV_USE_CLOCK_SYSCALL +# define EV_USE_CLOCK_SYSCALL 0 +# endif + +# if HAVE_CLOCK_GETTIME +# ifndef EV_USE_MONOTONIC +# define EV_USE_MONOTONIC 1 +# endif +# ifndef EV_USE_REALTIME +# define EV_USE_REALTIME 0 +# endif +# else +# ifndef EV_USE_MONOTONIC +# define EV_USE_MONOTONIC 0 +# endif +# ifndef EV_USE_REALTIME +# define EV_USE_REALTIME 0 +# endif +# endif + +# if HAVE_NANOSLEEP +# ifndef EV_USE_NANOSLEEP +# define EV_USE_NANOSLEEP EV_FEATURE_OS +# endif +# else +# undef EV_USE_NANOSLEEP +# define EV_USE_NANOSLEEP 0 +# endif + +# if HAVE_SELECT && HAVE_SYS_SELECT_H +# ifndef EV_USE_SELECT +# define EV_USE_SELECT EV_FEATURE_BACKENDS +# endif +# else +# undef EV_USE_SELECT +# define EV_USE_SELECT 0 +# endif + +# if HAVE_POLL && HAVE_POLL_H +# ifndef EV_USE_POLL +# define EV_USE_POLL EV_FEATURE_BACKENDS +# endif +# else +# undef EV_USE_POLL +# define EV_USE_POLL 0 +# endif + +# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H +# ifndef EV_USE_EPOLL +# define EV_USE_EPOLL EV_FEATURE_BACKENDS +# endif +# else +# undef EV_USE_EPOLL +# define EV_USE_EPOLL 0 +# endif + +# if HAVE_KQUEUE && HAVE_SYS_EVENT_H +# ifndef EV_USE_KQUEUE +# define EV_USE_KQUEUE EV_FEATURE_BACKENDS +# endif +# else +# undef EV_USE_KQUEUE +# define EV_USE_KQUEUE 0 +# endif + +# if HAVE_PORT_H && HAVE_PORT_CREATE +# ifndef EV_USE_PORT +# define EV_USE_PORT EV_FEATURE_BACKENDS +# endif +# else +# undef EV_USE_PORT +# define EV_USE_PORT 0 +# endif + +# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H +# ifndef EV_USE_INOTIFY +# define EV_USE_INOTIFY EV_FEATURE_OS +# endif +# else +# undef EV_USE_INOTIFY +# define EV_USE_INOTIFY 0 +# endif + +# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H +# ifndef EV_USE_SIGNALFD +# define EV_USE_SIGNALFD EV_FEATURE_OS +# endif +# else +# undef EV_USE_SIGNALFD +# define EV_USE_SIGNALFD 0 +# endif + +# if HAVE_EVENTFD +# ifndef EV_USE_EVENTFD +# define EV_USE_EVENTFD EV_FEATURE_OS +# endif +# else +# undef EV_USE_EVENTFD +# define EV_USE_EVENTFD 0 +# endif + +#endif + +#include <stdlib.h> +#include <string.h> +#include <fcntl.h> +#include <stddef.h> + +#include <stdio.h> + +#include <assert.h> +#include <errno.h> +#include <sys/types.h> +#include <time.h> +#include <limits.h> + +#include <signal.h> + +#ifdef EV_H +# include EV_H +#else +# include "ev.h" +#endif + +#if EV_NO_THREADS +# undef EV_NO_SMP +# define EV_NO_SMP 1 +# undef ECB_NO_THREADS +# define ECB_NO_THREADS 1 +#endif +#if EV_NO_SMP +# undef EV_NO_SMP +# define ECB_NO_SMP 1 +#endif + +#ifndef _WIN32 +# include <sys/time.h> +# include <sys/wait.h> +# include <unistd.h> +#else +# include <io.h> +# define WIN32_LEAN_AND_MEAN +# include <winsock2.h> +# include <windows.h> +# ifndef EV_SELECT_IS_WINSOCKET +# define EV_SELECT_IS_WINSOCKET 1 +# endif +# undef EV_AVOID_STDIO +#endif + +/* OS X, in its infinite idiocy, actually HARDCODES + * a limit of 1024 into their select. Where people have brains, + * OS X engineers apparently have a vacuum. Or maybe they were + * ordered to have a vacuum, or they do anything for money. + * This might help. Or not. + */ +#define _DARWIN_UNLIMITED_SELECT 1 + +/* this block tries to deduce configuration from header-defined symbols and defaults */ + +/* try to deduce the maximum number of signals on this platform */ +#if defined EV_NSIG +/* use what's provided */ +#elif defined NSIG +# define EV_NSIG (NSIG) +#elif defined _NSIG +# define EV_NSIG (_NSIG) +#elif defined SIGMAX +# define EV_NSIG (SIGMAX+1) +#elif defined SIG_MAX +# define EV_NSIG (SIG_MAX+1) +#elif defined _SIG_MAX +# define EV_NSIG (_SIG_MAX+1) +#elif defined MAXSIG +# define EV_NSIG (MAXSIG+1) +#elif defined MAX_SIG +# define EV_NSIG (MAX_SIG+1) +#elif defined SIGARRAYSIZE +# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ +#elif defined _sys_nsig +# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ +#else +# define EV_NSIG (8 * sizeof (sigset_t) + 1) +#endif + +#ifndef EV_USE_FLOOR +# define EV_USE_FLOOR 0 +#endif + +#ifndef EV_USE_CLOCK_SYSCALL +# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 +# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS +# else +# define EV_USE_CLOCK_SYSCALL 0 +# endif +#endif + +#if !(_POSIX_TIMERS > 0) +# ifndef EV_USE_MONOTONIC +# define EV_USE_MONOTONIC 0 +# endif +# ifndef EV_USE_REALTIME +# define EV_USE_REALTIME 0 +# endif +#endif + +#ifndef EV_USE_MONOTONIC +# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 +# define EV_USE_MONOTONIC EV_FEATURE_OS +# else +# define EV_USE_MONOTONIC 0 +# endif +#endif + +#ifndef EV_USE_REALTIME +# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL +#endif + +#ifndef EV_USE_NANOSLEEP +# if _POSIX_C_SOURCE >= 199309L +# define EV_USE_NANOSLEEP EV_FEATURE_OS +# else +# define EV_USE_NANOSLEEP 0 +# endif +#endif + +#ifndef EV_USE_SELECT +# define EV_USE_SELECT EV_FEATURE_BACKENDS +#endif + +#ifndef EV_USE_POLL +# ifdef _WIN32 +# define EV_USE_POLL 0 +# else +# define EV_USE_POLL EV_FEATURE_BACKENDS +# endif +#endif + +#ifndef EV_USE_EPOLL +# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) +# define EV_USE_EPOLL EV_FEATURE_BACKENDS +# else +# define EV_USE_EPOLL 0 +# endif +#endif + +#ifndef EV_USE_KQUEUE +# define EV_USE_KQUEUE 0 +#endif + +#ifndef EV_USE_PORT +# define EV_USE_PORT 0 +#endif + +#ifndef EV_USE_INOTIFY +# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) +# define EV_USE_INOTIFY EV_FEATURE_OS +# else +# define EV_USE_INOTIFY 0 +# endif +#endif + +#ifndef EV_PID_HASHSIZE +# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 +#endif + +#ifndef EV_INOTIFY_HASHSIZE +# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 +#endif + +#ifndef EV_USE_EVENTFD +# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) +# define EV_USE_EVENTFD EV_FEATURE_OS +# else +# define EV_USE_EVENTFD 0 +# endif +#endif + +#ifndef EV_USE_SIGNALFD +# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) +# define EV_USE_SIGNALFD EV_FEATURE_OS +# else +# define EV_USE_SIGNALFD 0 +# endif +#endif + +#if 0 /* debugging */ +# define EV_VERIFY 3 +# define EV_USE_4HEAP 1 +# define EV_HEAP_CACHE_AT 1 +#endif + +#ifndef EV_VERIFY +# define EV_VERIFY (EV_FEATURE_API ? 1 : 0) +#endif + +#ifndef EV_USE_4HEAP +# define EV_USE_4HEAP EV_FEATURE_DATA +#endif + +#ifndef EV_HEAP_CACHE_AT +# define EV_HEAP_CACHE_AT EV_FEATURE_DATA +#endif + +#ifdef ANDROID +/* supposedly, android doesn't typedef fd_mask */ +# undef EV_USE_SELECT +# define EV_USE_SELECT 0 +/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ +# undef EV_USE_CLOCK_SYSCALL +# define EV_USE_CLOCK_SYSCALL 0 +#endif + +/* aix's poll.h seems to cause lots of trouble */ +#ifdef _AIX +/* AIX has a completely broken poll.h header */ +# undef EV_USE_POLL +# define EV_USE_POLL 0 +#endif + +/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ +/* which makes programs even slower. might work on other unices, too. */ +#if EV_USE_CLOCK_SYSCALL +# include <sys/syscall.h> +# ifdef SYS_clock_gettime +# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) +# undef EV_USE_MONOTONIC +# define EV_USE_MONOTONIC 1 +# else +# undef EV_USE_CLOCK_SYSCALL +# define EV_USE_CLOCK_SYSCALL 0 +# endif +#endif + +/* this block fixes any misconfiguration where we know we run into trouble otherwise */ + +#ifndef CLOCK_MONOTONIC +# undef EV_USE_MONOTONIC +# define EV_USE_MONOTONIC 0 +#endif + +#ifndef CLOCK_REALTIME +# undef EV_USE_REALTIME +# define EV_USE_REALTIME 0 +#endif + +#if !EV_STAT_ENABLE +# undef EV_USE_INOTIFY +# define EV_USE_INOTIFY 0 +#endif + +#if !EV_USE_NANOSLEEP +/* hp-ux has it in sys/time.h, which we unconditionally include above */ +# if !defined _WIN32 && !defined __hpux +# include <sys/select.h> +# endif +#endif + +#if EV_USE_INOTIFY +# include <sys/statfs.h> +# include <sys/inotify.h> +/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ +# ifndef IN_DONT_FOLLOW +# undef EV_USE_INOTIFY +# define EV_USE_INOTIFY 0 +# endif +#endif + +#if EV_USE_EVENTFD +/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ +# include <stdint.h> +# ifndef EFD_NONBLOCK +# define EFD_NONBLOCK O_NONBLOCK +# endif +# ifndef EFD_CLOEXEC +# ifdef O_CLOEXEC +# define EFD_CLOEXEC O_CLOEXEC +# else +# define EFD_CLOEXEC 02000000 +# endif +# endif +EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); +#endif + +#if EV_USE_SIGNALFD +/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ +# include <stdint.h> +# ifndef SFD_NONBLOCK +# define SFD_NONBLOCK O_NONBLOCK +# endif +# ifndef SFD_CLOEXEC +# ifdef O_CLOEXEC +# define SFD_CLOEXEC O_CLOEXEC +# else +# define SFD_CLOEXEC 02000000 +# endif +# endif +EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); + +struct signalfd_siginfo +{ + uint32_t ssi_signo; + char pad[128 - sizeof (uint32_t)]; +}; +#endif + +/**/ + +#if EV_VERIFY >= 3 +# define EV_FREQUENT_CHECK ev_verify (EV_A) +#else +# define EV_FREQUENT_CHECK do { } while (0) +#endif + +/* + * This is used to work around floating point rounding problems. + * This value is good at least till the year 4000. + */ +#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ +/*#define MIN_INTERVAL 0.00000095367431640625 * 1/2**20, good till 2200 */ + +#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ +#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ + +#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) +#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) + +/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ +/* ECB.H BEGIN */ +/* + * libecb - http://software.schmorp.de/pkg/libecb + * + * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> + * Copyright (©) 2011 Emanuele Giaquinta + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +#ifndef ECB_H +#define ECB_H + +/* 16 bits major, 16 bits minor */ +#define ECB_VERSION 0x00010004 + +#ifdef _WIN32 + typedef signed char int8_t; + typedef unsigned char uint8_t; + typedef signed short int16_t; + typedef unsigned short uint16_t; + typedef signed int int32_t; + typedef unsigned int uint32_t; + #if __GNUC__ + typedef signed long long int64_t; + typedef unsigned long long uint64_t; + #else /* _MSC_VER || __BORLANDC__ */ + typedef signed __int64 int64_t; + typedef unsigned __int64 uint64_t; + #endif + #ifdef _WIN64 + #define ECB_PTRSIZE 8 + typedef uint64_t uintptr_t; + typedef int64_t intptr_t; + #else + #define ECB_PTRSIZE 4 + typedef uint32_t uintptr_t; + typedef int32_t intptr_t; + #endif +#else + #include <inttypes.h> + #if UINTMAX_MAX > 0xffffffffU + #define ECB_PTRSIZE 8 + #else + #define ECB_PTRSIZE 4 + #endif +#endif + +#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) +#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) + +/* work around x32 idiocy by defining proper macros */ +#if ECB_GCC_AMD64 || ECB_MSVC_AMD64 + #if _ILP32 + #define ECB_AMD64_X32 1 + #else + #define ECB_AMD64 1 + #endif +#endif + +/* many compilers define _GNUC_ to some versions but then only implement + * what their idiot authors think are the "more important" extensions, + * causing enormous grief in return for some better fake benchmark numbers. + * or so. + * we try to detect these and simply assume they are not gcc - if they have + * an issue with that they should have done it right in the first place. + */ +#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ + #define ECB_GCC_VERSION(major,minor) 0 +#else + #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) +#endif + +#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) + +#if __clang__ && defined __has_builtin + #define ECB_CLANG_BUILTIN(x) __has_builtin (x) +#else + #define ECB_CLANG_BUILTIN(x) 0 +#endif + +#if __clang__ && defined __has_extension + #define ECB_CLANG_EXTENSION(x) __has_extension (x) +#else + #define ECB_CLANG_EXTENSION(x) 0 +#endif + +#define ECB_CPP (__cplusplus+0) +#define ECB_CPP11 (__cplusplus >= 201103L) + +#if ECB_CPP + #define ECB_C 0 + #define ECB_STDC_VERSION 0 +#else + #define ECB_C 1 + #define ECB_STDC_VERSION __STDC_VERSION__ +#endif + +#define ECB_C99 (ECB_STDC_VERSION >= 199901L) +#define ECB_C11 (ECB_STDC_VERSION >= 201112L) + +#if ECB_CPP + #define ECB_EXTERN_C extern "C" + #define ECB_EXTERN_C_BEG ECB_EXTERN_C { + #define ECB_EXTERN_C_END } +#else + #define ECB_EXTERN_C extern + #define ECB_EXTERN_C_BEG + #define ECB_EXTERN_C_END +#endif + +/*****************************************************************************/ + +/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ +/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ + +#if ECB_NO_THREADS + #define ECB_NO_SMP 1 +#endif + +#if ECB_NO_SMP + #define ECB_MEMORY_FENCE do { } while (0) +#endif + +/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ +#if __xlC__ && ECB_CPP + #include <builtins.h> +#endif + +#ifndef ECB_MEMORY_FENCE + #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 + #if __i386 || __i386__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") + #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") + #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") + #elif ECB_GCC_AMD64 + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") + #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") + #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") + #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") + #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ + || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") + #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ + || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") + #elif __aarch64__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") + #elif (__sparc || __sparc__) && !__sparcv8 + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") + #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") + #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") + #elif defined __s390__ || defined __s390x__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") + #elif defined __mips__ + /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ + /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ + #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") + #elif defined __alpha__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") + #elif defined __hppa__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") + #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") + #elif defined __ia64__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") + #elif defined __m68k__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") + #elif defined __m88k__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") + #elif defined __sh__ + #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") + #endif + #endif +#endif + +#ifndef ECB_MEMORY_FENCE + #if ECB_GCC_VERSION(4,7) + /* see comment below (stdatomic.h) about the C11 memory model. */ + #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) + #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) + #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) + + #elif ECB_CLANG_EXTENSION(c_atomic) + /* see comment below (stdatomic.h) about the C11 memory model. */ + #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) + #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) + #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) + + #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ + #define ECB_MEMORY_FENCE __sync_synchronize () + #elif _MSC_VER >= 1500 /* VC++ 2008 */ + /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ + #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) + #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() + #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ + #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() + #elif _MSC_VER >= 1400 /* VC++ 2005 */ + #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) + #define ECB_MEMORY_FENCE _ReadWriteBarrier () + #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ + #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () + #elif defined _WIN32 + #include <WinNT.h> + #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ + #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 + #include <mbarrier.h> + #define ECB_MEMORY_FENCE __machine_rw_barrier () + #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () + #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () + #elif __xlC__ + #define ECB_MEMORY_FENCE __sync () + #endif +#endif + +#ifndef ECB_MEMORY_FENCE + #if ECB_C11 && !defined __STDC_NO_ATOMICS__ + /* we assume that these memory fences work on all variables/all memory accesses, */ + /* not just C11 atomics and atomic accesses */ + #include <stdatomic.h> + /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ + /* any fence other than seq_cst, which isn't very efficient for us. */ + /* Why that is, we don't know - either the C11 memory model is quite useless */ + /* for most usages, or gcc and clang have a bug */ + /* I *currently* lean towards the latter, and inefficiently implement */ + /* all three of ecb's fences as a seq_cst fence */ + /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ + /* for all __atomic_thread_fence's except seq_cst */ + #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) + #endif +#endif + +#ifndef ECB_MEMORY_FENCE + #if !ECB_AVOID_PTHREADS + /* + * if you get undefined symbol references to pthread_mutex_lock, + * or failure to find pthread.h, then you should implement + * the ECB_MEMORY_FENCE operations for your cpu/compiler + * OR provide pthread.h and link against the posix thread library + * of your system. + */ + #include <pthread.h> + #define ECB_NEEDS_PTHREADS 1 + #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 + + static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; + #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) + #endif +#endif + +#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE + #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE +#endif + +#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE + #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE +#endif + +/*****************************************************************************/ + +#if ECB_CPP + #define ecb_inline static inline +#elif ECB_GCC_VERSION(2,5) + #define ecb_inline static __inline__ +#elif ECB_C99 + #define ecb_inline static inline +#else + #define ecb_inline static +#endif + +#if ECB_GCC_VERSION(3,3) + #define ecb_restrict __restrict__ +#elif ECB_C99 + #define ecb_restrict restrict +#else + #define ecb_restrict +#endif + +typedef int ecb_bool; + +#define ECB_CONCAT_(a, b) a ## b +#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) +#define ECB_STRINGIFY_(a) # a +#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) +#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) + +#define ecb_function_ ecb_inline + +#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) + #define ecb_attribute(attrlist) __attribute__ (attrlist) +#else + #define ecb_attribute(attrlist) +#endif + +#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) + #define ecb_is_constant(expr) __builtin_constant_p (expr) +#else + /* possible C11 impl for integral types + typedef struct ecb_is_constant_struct ecb_is_constant_struct; + #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ + + #define ecb_is_constant(expr) 0 +#endif + +#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) + #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) +#else + #define ecb_expect(expr,value) (expr) +#endif + +#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) + #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) +#else + #define ecb_prefetch(addr,rw,locality) +#endif + +/* no emulation for ecb_decltype */ +#if ECB_CPP11 + // older implementations might have problems with decltype(x)::type, work around it + template<class T> struct ecb_decltype_t { typedef T type; }; + #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type +#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) + #define ecb_decltype(x) __typeof__ (x) +#endif + +#if _MSC_VER >= 1300 + #define ecb_deprecated __declspec (deprecated) +#else + #define ecb_deprecated ecb_attribute ((__deprecated__)) +#endif + +#if _MSC_VER >= 1500 + #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) +#elif ECB_GCC_VERSION(4,5) + #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) +#else + #define ecb_deprecated_message(msg) ecb_deprecated +#endif + +#if _MSC_VER >= 1400 + #define ecb_noinline __declspec (noinline) +#else + #define ecb_noinline ecb_attribute ((__noinline__)) +#endif + +#define ecb_unused ecb_attribute ((__unused__)) +#define ecb_const ecb_attribute ((__const__)) +#define ecb_pure ecb_attribute ((__pure__)) + +#if ECB_C11 || __IBMC_NORETURN + /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ + #define ecb_noreturn _Noreturn +#elif ECB_CPP11 + #define ecb_noreturn [[noreturn]] +#elif _MSC_VER >= 1200 + /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ + #define ecb_noreturn __declspec (noreturn) +#else + #define ecb_noreturn ecb_attribute ((__noreturn__)) +#endif + +#if ECB_GCC_VERSION(4,3) + #define ecb_artificial ecb_attribute ((__artificial__)) + #define ecb_hot ecb_attribute ((__hot__)) + #define ecb_cold ecb_attribute ((__cold__)) +#else + #define ecb_artificial + #define ecb_hot + #define ecb_cold +#endif + +/* put around conditional expressions if you are very sure that the */ +/* expression is mostly true or mostly false. note that these return */ +/* booleans, not the expression. */ +#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) +#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) +/* for compatibility to the rest of the world */ +#define ecb_likely(expr) ecb_expect_true (expr) +#define ecb_unlikely(expr) ecb_expect_false (expr) + +/* count trailing zero bits and count # of one bits */ +#if ECB_GCC_VERSION(3,4) \ + || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ + && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ + && ECB_CLANG_BUILTIN(__builtin_popcount)) + /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ + #define ecb_ld32(x) (__builtin_clz (x) ^ 31) + #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) + #define ecb_ctz32(x) __builtin_ctz (x) + #define ecb_ctz64(x) __builtin_ctzll (x) + #define ecb_popcount32(x) __builtin_popcount (x) + /* no popcountll */ +#else + ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); + ecb_function_ ecb_const int + ecb_ctz32 (uint32_t x) + { + int r = 0; + + x &= ~x + 1; /* this isolates the lowest bit */ + +#if ECB_branchless_on_i386 + r += !!(x & 0xaaaaaaaa) << 0; + r += !!(x & 0xcccccccc) << 1; + r += !!(x & 0xf0f0f0f0) << 2; + r += !!(x & 0xff00ff00) << 3; + r += !!(x & 0xffff0000) << 4; +#else + if (x & 0xaaaaaaaa) r += 1; + if (x & 0xcccccccc) r += 2; + if (x & 0xf0f0f0f0) r += 4; + if (x & 0xff00ff00) r += 8; + if (x & 0xffff0000) r += 16; +#endif + + return r; + } + + ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); + ecb_function_ ecb_const int + ecb_ctz64 (uint64_t x) + { + int shift = x & 0xffffffffU ? 0 : 32; + return ecb_ctz32 (x >> shift) + shift; + } + + ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); + ecb_function_ ecb_const int + ecb_popcount32 (uint32_t x) + { + x -= (x >> 1) & 0x55555555; + x = ((x >> 2) & 0x33333333) + (x & 0x33333333); + x = ((x >> 4) + x) & 0x0f0f0f0f; + x *= 0x01010101; + + return x >> 24; + } + + ecb_function_ ecb_const int ecb_ld32 (uint32_t x); + ecb_function_ ecb_const int ecb_ld32 (uint32_t x) + { + int r = 0; + + if (x >> 16) { x >>= 16; r += 16; } + if (x >> 8) { x >>= 8; r += 8; } + if (x >> 4) { x >>= 4; r += 4; } + if (x >> 2) { x >>= 2; r += 2; } + if (x >> 1) { r += 1; } + + return r; + } + + ecb_function_ ecb_const int ecb_ld64 (uint64_t x); + ecb_function_ ecb_const int ecb_ld64 (uint64_t x) + { + int r = 0; + + if (x >> 32) { x >>= 32; r += 32; } + + return r + ecb_ld32 (x); + } +#endif + +ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); +ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } +ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); +ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } + +ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); +ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) +{ + return ( (x * 0x0802U & 0x22110U) + | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; +} + +ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); +ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) +{ + x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); + x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); + x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); + x = ( x >> 8 ) | ( x << 8); + + return x; +} + +ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); +ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) +{ + x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); + x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); + x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); + x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); + x = ( x >> 16 ) | ( x << 16); + + return x; +} + +/* popcount64 is only available on 64 bit cpus as gcc builtin */ +/* so for this version we are lazy */ +ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); +ecb_function_ ecb_const int +ecb_popcount64 (uint64_t x) +{ + return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); +} + +ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); +ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); +ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); +ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); +ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); +ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); +ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); +ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); + +ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } +ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } +ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } +ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } +ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } +ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } +ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } +ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } + +#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) + #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) + #define ecb_bswap16(x) __builtin_bswap16 (x) + #else + #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) + #endif + #define ecb_bswap32(x) __builtin_bswap32 (x) + #define ecb_bswap64(x) __builtin_bswap64 (x) +#elif _MSC_VER + #include <stdlib.h> + #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x))) + #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x))) + #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x))) +#else + ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); + ecb_function_ ecb_const uint16_t + ecb_bswap16 (uint16_t x) + { + return ecb_rotl16 (x, 8); + } + + ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); + ecb_function_ ecb_const uint32_t + ecb_bswap32 (uint32_t x) + { + return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); + } + + ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); + ecb_function_ ecb_const uint64_t + ecb_bswap64 (uint64_t x) + { + return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); + } +#endif + +#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) + #define ecb_unreachable() __builtin_unreachable () +#else + /* this seems to work fine, but gcc always emits a warning for it :/ */ + ecb_inline ecb_noreturn void ecb_unreachable (void); + ecb_inline ecb_noreturn void ecb_unreachable (void) { } +#endif + +/* try to tell the compiler that some condition is definitely true */ +#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 + +ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); +ecb_inline ecb_const unsigned char +ecb_byteorder_helper (void) +{ + /* the union code still generates code under pressure in gcc, */ + /* but less than using pointers, and always seems to */ + /* successfully return a constant. */ + /* the reason why we have this horrible preprocessor mess */ + /* is to avoid it in all cases, at least on common architectures */ + /* or when using a recent enough gcc version (>= 4.6) */ +#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64 + return 0x44; +#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ + return 0x44; +#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ + return 0x11; +#else + union + { + uint32_t i; + uint8_t c; + } u = { 0x11223344 }; + return u.c; +#endif +} + +ecb_inline ecb_const ecb_bool ecb_big_endian (void); +ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } +ecb_inline ecb_const ecb_bool ecb_little_endian (void); +ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } + +#if ECB_GCC_VERSION(3,0) || ECB_C99 + #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) +#else + #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) +#endif + +#if ECB_CPP + template<typename T> + static inline T ecb_div_rd (T val, T div) + { + return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; + } + template<typename T> + static inline T ecb_div_ru (T val, T div) + { + return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; + } +#else + #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) + #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) +#endif + +#if ecb_cplusplus_does_not_suck + /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ + template<typename T, int N> + static inline int ecb_array_length (const T (&arr)[N]) + { + return N; + } +#else + #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) +#endif + +/*******************************************************************************/ +/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ + +/* basically, everything uses "ieee pure-endian" floating point numbers */ +/* the only noteworthy exception is ancient armle, which uses order 43218765 */ +#if 0 \ + || __i386 || __i386__ \ + || ECB_GCC_AMD64 \ + || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ + || defined __s390__ || defined __s390x__ \ + || defined __mips__ \ + || defined __alpha__ \ + || defined __hppa__ \ + || defined __ia64__ \ + || defined __m68k__ \ + || defined __m88k__ \ + || defined __sh__ \ + || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ + || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ + || defined __aarch64__ + #define ECB_STDFP 1 + #include <string.h> /* for memcpy */ +#else + #define ECB_STDFP 0 +#endif + +#ifndef ECB_NO_LIBM + + #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ + + /* only the oldest of old doesn't have this one. solaris. */ + #ifdef INFINITY + #define ECB_INFINITY INFINITY + #else + #define ECB_INFINITY HUGE_VAL + #endif + + #ifdef NAN + #define ECB_NAN NAN + #else + #define ECB_NAN ECB_INFINITY + #endif + + #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L + #define ecb_ldexpf(x,e) ldexpf ((x), (e)) + #define ecb_frexpf(x,e) frexpf ((x), (e)) + #else + #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) + #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) + #endif + + /* converts an ieee half/binary16 to a float */ + ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); + ecb_function_ ecb_const float + ecb_binary16_to_float (uint16_t x) + { + int e = (x >> 10) & 0x1f; + int m = x & 0x3ff; + float r; + + if (!e ) r = ecb_ldexpf (m , -24); + else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25); + else if (m ) r = ECB_NAN; + else r = ECB_INFINITY; + + return x & 0x8000 ? -r : r; + } + + /* convert a float to ieee single/binary32 */ + ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); + ecb_function_ ecb_const uint32_t + ecb_float_to_binary32 (float x) + { + uint32_t r; + + #if ECB_STDFP + memcpy (&r, &x, 4); + #else + /* slow emulation, works for anything but -0 */ + uint32_t m; + int e; + + if (x == 0e0f ) return 0x00000000U; + if (x > +3.40282346638528860e+38f) return 0x7f800000U; + if (x < -3.40282346638528860e+38f) return 0xff800000U; + if (x != x ) return 0x7fbfffffU; + + m = ecb_frexpf (x, &e) * 0x1000000U; + + r = m & 0x80000000U; + + if (r) + m = -m; + + if (e <= -126) + { + m &= 0xffffffU; + m >>= (-125 - e); + e = -126; + } + + r |= (e + 126) << 23; + r |= m & 0x7fffffU; + #endif + + return r; + } + + /* converts an ieee single/binary32 to a float */ + ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); + ecb_function_ ecb_const float + ecb_binary32_to_float (uint32_t x) + { + float r; + + #if ECB_STDFP + memcpy (&r, &x, 4); + #else + /* emulation, only works for normals and subnormals and +0 */ + int neg = x >> 31; + int e = (x >> 23) & 0xffU; + + x &= 0x7fffffU; + + if (e) + x |= 0x800000U; + else + e = 1; + + /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ + r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); + + r = neg ? -r : r; + #endif + + return r; + } + + /* convert a double to ieee double/binary64 */ + ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); + ecb_function_ ecb_const uint64_t + ecb_double_to_binary64 (double x) + { + uint64_t r; + + #if ECB_STDFP + memcpy (&r, &x, 8); + #else + /* slow emulation, works for anything but -0 */ + uint64_t m; + int e; + + if (x == 0e0 ) return 0x0000000000000000U; + if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; + if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; + if (x != x ) return 0X7ff7ffffffffffffU; + + m = frexp (x, &e) * 0x20000000000000U; + + r = m & 0x8000000000000000;; + + if (r) + m = -m; + + if (e <= -1022) + { + m &= 0x1fffffffffffffU; + m >>= (-1021 - e); + e = -1022; + } + + r |= ((uint64_t)(e + 1022)) << 52; + r |= m & 0xfffffffffffffU; + #endif + + return r; + } + + /* converts an ieee double/binary64 to a double */ + ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); + ecb_function_ ecb_const double + ecb_binary64_to_double (uint64_t x) + { + double r; + + #if ECB_STDFP + memcpy (&r, &x, 8); + #else + /* emulation, only works for normals and subnormals and +0 */ + int neg = x >> 63; + int e = (x >> 52) & 0x7ffU; + + x &= 0xfffffffffffffU; + + if (e) + x |= 0x10000000000000U; + else + e = 1; + + /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ + r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); + + r = neg ? -r : r; + #endif + + return r; + } + +#endif + +#endif + +/* ECB.H END */ + +#if ECB_MEMORY_FENCE_NEEDS_PTHREADS +/* if your architecture doesn't need memory fences, e.g. because it is + * single-cpu/core, or if you use libev in a project that doesn't use libev + * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling + * libev, in which cases the memory fences become nops. + * alternatively, you can remove this #error and link against libpthread, + * which will then provide the memory fences. + */ +# error "memory fences not defined for your architecture, please report" +#endif + +#ifndef ECB_MEMORY_FENCE +# define ECB_MEMORY_FENCE do { } while (0) +# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE +# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE +#endif + +#define expect_false(cond) ecb_expect_false (cond) +#define expect_true(cond) ecb_expect_true (cond) +#define noinline ecb_noinline + +#define inline_size ecb_inline + +#if EV_FEATURE_CODE +# define inline_speed ecb_inline +#else +# define inline_speed static noinline +#endif + +#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) + +#if EV_MINPRI == EV_MAXPRI +# define ABSPRI(w) (((W)w), 0) +#else +# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) +#endif + +#define EMPTY /* required for microsofts broken pseudo-c compiler */ +#define EMPTY2(a,b) /* used to suppress some warnings */ + +typedef ev_watcher *W; +typedef ev_watcher_list *WL; +typedef ev_watcher_time *WT; + +#define ev_active(w) ((W)(w))->active +#define ev_at(w) ((WT)(w))->at + +#if EV_USE_REALTIME +/* sig_atomic_t is used to avoid per-thread variables or locking but still */ +/* giving it a reasonably high chance of working on typical architectures */ +static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ +#endif + +#if EV_USE_MONOTONIC +static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ +#endif + +#ifndef EV_FD_TO_WIN32_HANDLE +# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) +#endif +#ifndef EV_WIN32_HANDLE_TO_FD +# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) +#endif +#ifndef EV_WIN32_CLOSE_FD +# define EV_WIN32_CLOSE_FD(fd) close (fd) +#endif + +#ifdef _WIN32 +# include "ev_win32.c" +#endif + +/*****************************************************************************/ + +/* define a suitable floor function (only used by periodics atm) */ + +#if EV_USE_FLOOR +# include <math.h> +# define ev_floor(v) floor (v) +#else + +#include <float.h> + +/* a floor() replacement function, should be independent of ev_tstamp type */ +static ev_tstamp noinline +ev_floor (ev_tstamp v) +{ + /* the choice of shift factor is not terribly important */ +#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ + const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; +#else + const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; +#endif + + /* argument too large for an unsigned long? */ + if (expect_false (v >= shift)) + { + ev_tstamp f; + + if (v == v - 1.) + return v; /* very large number */ + + f = shift * ev_floor (v * (1. / shift)); + return f + ev_floor (v - f); + } + + /* special treatment for negative args? */ + if (expect_false (v < 0.)) + { + ev_tstamp f = -ev_floor (-v); + + return f - (f == v ? 0 : 1); + } + + /* fits into an unsigned long */ + return (unsigned long)v; +} + +#endif + +/*****************************************************************************/ + +#ifdef __linux +# include <sys/utsname.h> +#endif + +static unsigned int noinline ecb_cold +ev_linux_version (void) +{ +#ifdef __linux + unsigned int v = 0; + struct utsname buf; + int i; + char *p = buf.release; + + if (uname (&buf)) + return 0; + + for (i = 3+1; --i; ) + { + unsigned int c = 0; + + for (;;) + { + if (*p >= '0' && *p <= '9') + c = c * 10 + *p++ - '0'; + else + { + p += *p == '.'; + break; + } + } + + v = (v << 8) | c; + } + + return v; +#else + return 0; +#endif +} + +/*****************************************************************************/ + +#if EV_AVOID_STDIO +static void noinline ecb_cold +ev_printerr (const char *msg) +{ + int rc; + do { + rc = write (STDERR_FILENO, msg, strlen (msg)); + } while (errno == EINTR && rc < 0); +} +#endif + +static void (*syserr_cb)(const char *msg) EV_THROW; + +void ecb_cold +ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW +{ + syserr_cb = cb; +} + +static void noinline ecb_cold +ev_syserr (const char *msg) +{ + if (!msg) + msg = "(libev) system error"; + + if (syserr_cb) + syserr_cb (msg); + else + { +#if EV_AVOID_STDIO + ev_printerr (msg); + ev_printerr (": "); + ev_printerr (strerror (errno)); + ev_printerr ("\n"); +#else + perror (msg); +#endif + abort (); + } +} + +static void * +ev_realloc_emul (void *ptr, long size) EV_THROW +{ + /* some systems, notably openbsd and darwin, fail to properly + * implement realloc (x, 0) (as required by both ansi c-89 and + * the single unix specification, so work around them here. + * recently, also (at least) fedora and debian started breaking it, + * despite documenting it otherwise. + */ + + if (size) + return realloc (ptr, size); + + free (ptr); + return 0; +} + +static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; + +void ecb_cold +ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW +{ + alloc = cb; +} + +inline_speed void * +ev_realloc (void *ptr, long size) +{ + ptr = alloc (ptr, size); + + if (!ptr && size) + { +#if EV_AVOID_STDIO + ev_printerr ("(libev) memory allocation failed, aborting.\n"); +#else + fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); +#endif + abort (); + } + + return ptr; +} + +#define ev_malloc(size) ev_realloc (0, (size)) +#define ev_free(ptr) free (ptr) + +/*****************************************************************************/ + +/* set in reify when reification needed */ +#define EV_ANFD_REIFY 1 + +/* file descriptor info structure */ +typedef struct +{ + WL head; + unsigned char events; /* the events watched for */ + unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ + unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ + unsigned char unused; +#if EV_USE_EPOLL + unsigned int egen; /* generation counter to counter epoll bugs */ +#endif +#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP + SOCKET handle; +#endif +#if EV_USE_IOCP + OVERLAPPED or, ow; +#endif +} ANFD; + +/* stores the pending event set for a given watcher */ +typedef struct +{ + W w; + int events; /* the pending event set for the given watcher */ +} ANPENDING; + +#if EV_USE_INOTIFY +/* hash table entry per inotify-id */ +typedef struct +{ + WL head; +} ANFS; +#endif + +/* Heap Entry */ +#if EV_HEAP_CACHE_AT + /* a heap element */ + typedef struct { + ev_tstamp at; + WT w; + } ANHE; + + #define ANHE_w(he) (he).w /* access watcher, read-write */ + #define ANHE_at(he) (he).at /* access cached at, read-only */ + #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ +#else + /* a heap element */ + typedef WT ANHE; + + #define ANHE_w(he) (he) + #define ANHE_at(he) (he)->at + #define ANHE_at_cache(he) +#endif + +#if EV_MULTIPLICITY + + struct ev_loop + { + ev_tstamp ev_rt_now; + #define ev_rt_now ((loop)->ev_rt_now) + #define VAR(name,decl) decl; + #include "ev_vars.h" + #undef VAR + }; + #include "ev_wrap.h" + + static struct ev_loop default_loop_struct; + EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ + +#else + + EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ + #define VAR(name,decl) static decl; + #include "ev_vars.h" + #undef VAR + + static int ev_default_loop_ptr; + +#endif + +#if EV_FEATURE_API +# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) +# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) +# define EV_INVOKE_PENDING invoke_cb (EV_A) +#else +# define EV_RELEASE_CB (void)0 +# define EV_ACQUIRE_CB (void)0 +# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) +#endif + +#define EVBREAK_RECURSE 0x80 + +/*****************************************************************************/ + +#ifndef EV_HAVE_EV_TIME +ev_tstamp +ev_time (void) EV_THROW +{ +#if EV_USE_REALTIME + if (expect_true (have_realtime)) + { + struct timespec ts; + clock_gettime (CLOCK_REALTIME, &ts); + return ts.tv_sec + ts.tv_nsec * 1e-9; + } +#endif + + struct timeval tv; + gettimeofday (&tv, 0); + return tv.tv_sec + tv.tv_usec * 1e-6; +} +#endif + +inline_size ev_tstamp +get_clock (void) +{ +#if EV_USE_MONOTONIC + if (expect_true (have_monotonic)) + { + struct timespec ts; + clock_gettime (CLOCK_MONOTONIC, &ts); + return ts.tv_sec + ts.tv_nsec * 1e-9; + } +#endif + + return ev_time (); +} + +#if EV_MULTIPLICITY +ev_tstamp +ev_now (EV_P) EV_THROW +{ + return ev_rt_now; +} +#endif + +void +ev_sleep (ev_tstamp delay) EV_THROW +{ + if (delay > 0.) + { +#if EV_USE_NANOSLEEP + struct timespec ts; + + EV_TS_SET (ts, delay); + nanosleep (&ts, 0); +#elif defined _WIN32 + Sleep ((unsigned long)(delay * 1e3)); +#else + struct timeval tv; + + /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ + /* something not guaranteed by newer posix versions, but guaranteed */ + /* by older ones */ + EV_TV_SET (tv, delay); + select (0, 0, 0, 0, &tv); +#endif + } +} + +/*****************************************************************************/ + +#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ + +/* find a suitable new size for the given array, */ +/* hopefully by rounding to a nice-to-malloc size */ +inline_size int +array_nextsize (int elem, int cur, int cnt) +{ + int ncur = cur + 1; + + do + ncur <<= 1; + while (cnt > ncur); + + /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ + if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) + { + ncur *= elem; + ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); + ncur = ncur - sizeof (void *) * 4; + ncur /= elem; + } + + return ncur; +} + +static void * noinline ecb_cold +array_realloc (int elem, void *base, int *cur, int cnt) +{ + *cur = array_nextsize (elem, *cur, cnt); + return ev_realloc (base, elem * *cur); +} + +#define array_init_zero(base,count) \ + memset ((void *)(base), 0, sizeof (*(base)) * (count)) + +#define array_needsize(type,base,cur,cnt,init) \ + if (expect_false ((cnt) > (cur))) \ + { \ + int ecb_unused ocur_ = (cur); \ + (base) = (type *)array_realloc \ + (sizeof (type), (base), &(cur), (cnt)); \ + init ((base) + (ocur_), (cur) - ocur_); \ + } + +#if 0 +#define array_slim(type,stem) \ + if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ + { \ + stem ## max = array_roundsize (stem ## cnt >> 1); \ + base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ + fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ + } +#endif + +#define array_free(stem, idx) \ + ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 + +/*****************************************************************************/ + +/* dummy callback for pending events */ +static void noinline +pendingcb (EV_P_ ev_prepare *w, int revents) +{ +} + +void noinline +ev_feed_event (EV_P_ void *w, int revents) EV_THROW +{ + W w_ = (W)w; + int pri = ABSPRI (w_); + + if (expect_false (w_->pending)) + pendings [pri][w_->pending - 1].events |= revents; + else + { + w_->pending = ++pendingcnt [pri]; + array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); + pendings [pri][w_->pending - 1].w = w_; + pendings [pri][w_->pending - 1].events = revents; + } + + pendingpri = NUMPRI - 1; +} + +inline_speed void +feed_reverse (EV_P_ W w) +{ + array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); + rfeeds [rfeedcnt++] = w; +} + +inline_size void +feed_reverse_done (EV_P_ int revents) +{ + do + ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); + while (rfeedcnt); +} + +inline_speed void +queue_events (EV_P_ W *events, int eventcnt, int type) +{ + int i; + + for (i = 0; i < eventcnt; ++i) + ev_feed_event (EV_A_ events [i], type); +} + +/*****************************************************************************/ + +inline_speed void +fd_event_nocheck (EV_P_ int fd, int revents) +{ + ANFD *anfd = anfds + fd; + ev_io *w; + + for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) + { + int ev = w->events & revents; + + if (ev) + ev_feed_event (EV_A_ (W)w, ev); + } +} + +/* do not submit kernel events for fds that have reify set */ +/* because that means they changed while we were polling for new events */ +inline_speed void +fd_event (EV_P_ int fd, int revents) +{ + ANFD *anfd = anfds + fd; + + if (expect_true (!anfd->reify)) + fd_event_nocheck (EV_A_ fd, revents); +} + +void +ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW +{ + if (fd >= 0 && fd < anfdmax) + fd_event_nocheck (EV_A_ fd, revents); +} + +/* make sure the external fd watch events are in-sync */ +/* with the kernel/libev internal state */ +inline_size void +fd_reify (EV_P) +{ + int i; + +#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP + for (i = 0; i < fdchangecnt; ++i) + { + int fd = fdchanges [i]; + ANFD *anfd = anfds + fd; + + if (anfd->reify & EV__IOFDSET && anfd->head) + { + SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); + + if (handle != anfd->handle) + { + unsigned long arg; + + assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); + + /* handle changed, but fd didn't - we need to do it in two steps */ + backend_modify (EV_A_ fd, anfd->events, 0); + anfd->events = 0; + anfd->handle = handle; + } + } + } +#endif + + for (i = 0; i < fdchangecnt; ++i) + { + int fd = fdchanges [i]; + ANFD *anfd = anfds + fd; + ev_io *w; + + unsigned char o_events = anfd->events; + unsigned char o_reify = anfd->reify; + + anfd->reify = 0; + + /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ + { + anfd->events = 0; + + for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) + anfd->events |= (unsigned char)w->events; + + if (o_events != anfd->events) + o_reify = EV__IOFDSET; /* actually |= */ + } + + if (o_reify & EV__IOFDSET) + backend_modify (EV_A_ fd, o_events, anfd->events); + } + + fdchangecnt = 0; +} + +/* something about the given fd changed */ +inline_size void +fd_change (EV_P_ int fd, int flags) +{ + unsigned char reify = anfds [fd].reify; + anfds [fd].reify |= flags; + + if (expect_true (!reify)) + { + ++fdchangecnt; + array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); + fdchanges [fdchangecnt - 1] = fd; + } +} + +/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ +inline_speed void ecb_cold +fd_kill (EV_P_ int fd) +{ + ev_io *w; + + while ((w = (ev_io *)anfds [fd].head)) + { + ev_io_stop (EV_A_ w); + ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); + } +} + +/* check whether the given fd is actually valid, for error recovery */ +inline_size int ecb_cold +fd_valid (int fd) +{ +#ifdef _WIN32 + return EV_FD_TO_WIN32_HANDLE (fd) != -1; +#else + return fcntl (fd, F_GETFD) != -1; +#endif +} + +/* called on EBADF to verify fds */ +static void noinline ecb_cold +fd_ebadf (EV_P) +{ + int fd; + + for (fd = 0; fd < anfdmax; ++fd) + if (anfds [fd].events) + if (!fd_valid (fd) && errno == EBADF) + fd_kill (EV_A_ fd); +} + +/* called on ENOMEM in select/poll to kill some fds and retry */ +static void noinline ecb_cold +fd_enomem (EV_P) +{ + int fd; + + for (fd = anfdmax; fd--; ) + if (anfds [fd].events) + { + fd_kill (EV_A_ fd); + break; + } +} + +/* usually called after fork if backend needs to re-arm all fds from scratch */ +static void noinline +fd_rearm_all (EV_P) +{ + int fd; + + for (fd = 0; fd < anfdmax; ++fd) + if (anfds [fd].events) + { + anfds [fd].events = 0; + anfds [fd].emask = 0; + fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); + } +} + +/* used to prepare libev internal fd's */ +/* this is not fork-safe */ +inline_speed void +fd_intern (int fd) +{ +#ifdef _WIN32 + unsigned long arg = 1; + ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); +#else + fcntl (fd, F_SETFD, FD_CLOEXEC); + fcntl (fd, F_SETFL, O_NONBLOCK); +#endif +} + +/*****************************************************************************/ + +/* + * the heap functions want a real array index. array index 0 is guaranteed to not + * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives + * the branching factor of the d-tree. + */ + +/* + * at the moment we allow libev the luxury of two heaps, + * a small-code-size 2-heap one and a ~1.5kb larger 4-heap + * which is more cache-efficient. + * the difference is about 5% with 50000+ watchers. + */ +#if EV_USE_4HEAP + +#define DHEAP 4 +#define HEAP0 (DHEAP - 1) /* index of first element in heap */ +#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) +#define UPHEAP_DONE(p,k) ((p) == (k)) + +/* away from the root */ +inline_speed void +downheap (ANHE *heap, int N, int k) +{ + ANHE he = heap [k]; + ANHE *E = heap + N + HEAP0; + + for (;;) + { + ev_tstamp minat; + ANHE *minpos; + ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; + + /* find minimum child */ + if (expect_true (pos + DHEAP - 1 < E)) + { + /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); + if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); + if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); + if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); + } + else if (pos < E) + { + /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); + if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); + if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); + if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); + } + else + break; + + if (ANHE_at (he) <= minat) + break; + + heap [k] = *minpos; + ev_active (ANHE_w (*minpos)) = k; + + k = minpos - heap; + } + + heap [k] = he; + ev_active (ANHE_w (he)) = k; +} + +#else /* 4HEAP */ + +#define HEAP0 1 +#define HPARENT(k) ((k) >> 1) +#define UPHEAP_DONE(p,k) (!(p)) + +/* away from the root */ +inline_speed void +downheap (ANHE *heap, int N, int k) +{ + ANHE he = heap [k]; + + for (;;) + { + int c = k << 1; + + if (c >= N + HEAP0) + break; + + c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) + ? 1 : 0; + + if (ANHE_at (he) <= ANHE_at (heap [c])) + break; + + heap [k] = heap [c]; + ev_active (ANHE_w (heap [k])) = k; + + k = c; + } + + heap [k] = he; + ev_active (ANHE_w (he)) = k; +} +#endif + +/* towards the root */ +inline_speed void +upheap (ANHE *heap, int k) +{ + ANHE he = heap [k]; + + for (;;) + { + int p = HPARENT (k); + + if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) + break; + + heap [k] = heap [p]; + ev_active (ANHE_w (heap [k])) = k; + k = p; + } + + heap [k] = he; + ev_active (ANHE_w (he)) = k; +} + +/* move an element suitably so it is in a correct place */ +inline_size void +adjustheap (ANHE *heap, int N, int k) +{ + if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) + upheap (heap, k); + else + downheap (heap, N, k); +} + +/* rebuild the heap: this function is used only once and executed rarely */ +inline_size void +reheap (ANHE *heap, int N) +{ + int i; + + /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ + /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ + for (i = 0; i < N; ++i) + upheap (heap, i + HEAP0); +} + +/*****************************************************************************/ + +/* associate signal watchers to a signal signal */ +typedef struct +{ + EV_ATOMIC_T pending; +#if EV_MULTIPLICITY + EV_P; +#endif + WL head; +} ANSIG; + +static ANSIG signals [EV_NSIG]; + +/*****************************************************************************/ + +#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE + +static void noinline ecb_cold +evpipe_init (EV_P) +{ + if (!ev_is_active (&pipe_w)) + { + int fds [2]; + +# if EV_USE_EVENTFD + fds [0] = -1; + fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); + if (fds [1] < 0 && errno == EINVAL) + fds [1] = eventfd (0, 0); + + if (fds [1] < 0) +# endif + { + while (pipe (fds)) + ev_syserr ("(libev) error creating signal/async pipe"); + + fd_intern (fds [0]); + } + + evpipe [0] = fds [0]; + + if (evpipe [1] < 0) + evpipe [1] = fds [1]; /* first call, set write fd */ + else + { + /* on subsequent calls, do not change evpipe [1] */ + /* so that evpipe_write can always rely on its value. */ + /* this branch does not do anything sensible on windows, */ + /* so must not be executed on windows */ + + dup2 (fds [1], evpipe [1]); + close (fds [1]); + } + + fd_intern (evpipe [1]); + + ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); + ev_io_start (EV_A_ &pipe_w); + ev_unref (EV_A); /* watcher should not keep loop alive */ + } +} + +inline_speed void +evpipe_write (EV_P_ EV_ATOMIC_T *flag) +{ + ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ + + if (expect_true (*flag)) + return; + + *flag = 1; + ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ + + pipe_write_skipped = 1; + + ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ + + if (pipe_write_wanted) + { + int old_errno, rc; + + pipe_write_skipped = 0; + ECB_MEMORY_FENCE_RELEASE; + + old_errno = errno; /* save errno because write will clobber it */ + +#if EV_USE_EVENTFD + if (evpipe [0] < 0) + { + uint64_t counter = 1; + do { + rc = write (evpipe [1], &counter, sizeof (uint64_t)); + } while (errno == EINTR && rc < 0); + } + else +#endif + { +#ifdef _WIN32 + WSABUF buf; + DWORD sent; + buf.buf = &buf; + buf.len = 1; + WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); +#else + do { + rc = write (evpipe [1], &(evpipe [1]), 1); + } while (errno == EINTR && rc < 0); +#endif + } + + errno = old_errno; + } +} + +/* called whenever the libev signal pipe */ +/* got some events (signal, async) */ +static void +pipecb (EV_P_ ev_io *iow, int revents) +{ + int i; + + if (revents & EV_READ) + { +#if EV_USE_EVENTFD + if (evpipe [0] < 0) + { + uint64_t counter; + read (evpipe [1], &counter, sizeof (uint64_t)); + } + else +#endif + { + char dummy[4]; +#ifdef _WIN32 + WSABUF buf; + DWORD recvd; + DWORD flags = 0; + buf.buf = dummy; + buf.len = sizeof (dummy); + WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); +#else + read (evpipe [0], &dummy, sizeof (dummy)); +#endif + } + } + + pipe_write_skipped = 0; + + ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ + +#if EV_SIGNAL_ENABLE + if (sig_pending) + { + sig_pending = 0; + + ECB_MEMORY_FENCE; + + for (i = EV_NSIG - 1; i--; ) + if (expect_false (signals [i].pending)) + ev_feed_signal_event (EV_A_ i + 1); + } +#endif + +#if EV_ASYNC_ENABLE + if (async_pending) + { + async_pending = 0; + + ECB_MEMORY_FENCE; + + for (i = asynccnt; i--; ) + if (asyncs [i]->sent) + { + asyncs [i]->sent = 0; + ECB_MEMORY_FENCE_RELEASE; + ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); + } + } +#endif +} + +/*****************************************************************************/ + +void +ev_feed_signal (int signum) EV_THROW +{ +#if EV_MULTIPLICITY + EV_P; + ECB_MEMORY_FENCE_ACQUIRE; + EV_A = signals [signum - 1].loop; + + if (!EV_A) + return; +#endif + + signals [signum - 1].pending = 1; + evpipe_write (EV_A_ &sig_pending); +} + +static void +ev_sighandler (int signum) +{ +#ifdef _WIN32 + signal (signum, ev_sighandler); +#endif + + ev_feed_signal (signum); +} + +void noinline +ev_feed_signal_event (EV_P_ int signum) EV_THROW +{ + WL w; + + if (expect_false (signum <= 0 || signum >= EV_NSIG)) + return; + + --signum; + +#if EV_MULTIPLICITY + /* it is permissible to try to feed a signal to the wrong loop */ + /* or, likely more useful, feeding a signal nobody is waiting for */ + + if (expect_false (signals [signum].loop != EV_A)) + return; +#endif + + signals [signum].pending = 0; + ECB_MEMORY_FENCE_RELEASE; + + for (w = signals [signum].head; w; w = w->next) + ev_feed_event (EV_A_ (W)w, EV_SIGNAL); +} + +#if EV_USE_SIGNALFD +static void +sigfdcb (EV_P_ ev_io *iow, int revents) +{ + struct signalfd_siginfo si[2], *sip; /* these structs are big */ + + for (;;) + { + ssize_t res = read (sigfd, si, sizeof (si)); + + /* not ISO-C, as res might be -1, but works with SuS */ + for (sip = si; (char *)sip < (char *)si + res; ++sip) + ev_feed_signal_event (EV_A_ sip->ssi_signo); + + if (res < (ssize_t)sizeof (si)) + break; + } +} +#endif + +#endif + +/*****************************************************************************/ + +#if EV_CHILD_ENABLE +static WL childs [EV_PID_HASHSIZE]; + +static ev_signal childev; + +#ifndef WIFCONTINUED +# define WIFCONTINUED(status) 0 +#endif + +/* handle a single child status event */ +inline_speed void +child_reap (EV_P_ int chain, int pid, int status) +{ + ev_child *w; + int traced = WIFSTOPPED (status) || WIFCONTINUED (status); + + for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) + { + if ((w->pid == pid || !w->pid) + && (!traced || (w->flags & 1))) + { + ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ + w->rpid = pid; + w->rstatus = status; + ev_feed_event (EV_A_ (W)w, EV_CHILD); + } + } +} + +#ifndef WCONTINUED +# define WCONTINUED 0 +#endif + +/* called on sigchld etc., calls waitpid */ +static void +childcb (EV_P_ ev_signal *sw, int revents) +{ + int pid, status; + + /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ + if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) + if (!WCONTINUED + || errno != EINVAL + || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) + return; + + /* make sure we are called again until all children have been reaped */ + /* we need to do it this way so that the callback gets called before we continue */ + ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); + + child_reap (EV_A_ pid, pid, status); + if ((EV_PID_HASHSIZE) > 1) + child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ +} + +#endif + +/*****************************************************************************/ + +#if EV_USE_IOCP +# include "ev_iocp.c" +#endif +#if EV_USE_PORT +# include "ev_port.c" +#endif +#if EV_USE_KQUEUE +# include "ev_kqueue.c" +#endif +#if EV_USE_EPOLL +# include "ev_epoll.c" +#endif +#if EV_USE_POLL +# include "ev_poll.c" +#endif +#if EV_USE_SELECT +# include "ev_select.c" +#endif + +int ecb_cold +ev_version_major (void) EV_THROW +{ + return EV_VERSION_MAJOR; +} + +int ecb_cold +ev_version_minor (void) EV_THROW +{ + return EV_VERSION_MINOR; +} + +/* return true if we are running with elevated privileges and should ignore env variables */ +int inline_size ecb_cold +enable_secure (void) +{ +#ifdef _WIN32 + return 0; +#else + return getuid () != geteuid () + || getgid () != getegid (); +#endif +} + +unsigned int ecb_cold +ev_supported_backends (void) EV_THROW +{ + unsigned int flags = 0; + + if (EV_USE_PORT ) flags |= EVBACKEND_PORT; + if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; + if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; + if (EV_USE_POLL ) flags |= EVBACKEND_POLL; + if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; + + return flags; +} + +unsigned int ecb_cold +ev_recommended_backends (void) EV_THROW +{ + unsigned int flags = ev_supported_backends (); + +#ifndef __NetBSD__ + /* kqueue is borked on everything but netbsd apparently */ + /* it usually doesn't work correctly on anything but sockets and pipes */ + flags &= ~EVBACKEND_KQUEUE; +#endif +#ifdef __APPLE__ + /* only select works correctly on that "unix-certified" platform */ + flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ + flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ +#endif +#ifdef __FreeBSD__ + flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ +#endif + + return flags; +} + +unsigned int ecb_cold +ev_embeddable_backends (void) EV_THROW +{ + int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; + + /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ + if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ + flags &= ~EVBACKEND_EPOLL; + + return flags; +} + +unsigned int +ev_backend (EV_P) EV_THROW +{ + return backend; +} + +#if EV_FEATURE_API +unsigned int +ev_iteration (EV_P) EV_THROW +{ + return loop_count; +} + +unsigned int +ev_depth (EV_P) EV_THROW +{ + return loop_depth; +} + +void +ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW +{ + io_blocktime = interval; +} + +void +ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW +{ + timeout_blocktime = interval; +} + +void +ev_set_userdata (EV_P_ void *data) EV_THROW +{ + userdata = data; +} + +void * +ev_userdata (EV_P) EV_THROW +{ + return userdata; +} + +void +ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW +{ + invoke_cb = invoke_pending_cb; +} + +void +ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW +{ + release_cb = release; + acquire_cb = acquire; +} +#endif + +/* initialise a loop structure, must be zero-initialised */ +static void noinline ecb_cold +loop_init (EV_P_ unsigned int flags) EV_THROW +{ + if (!backend) + { + origflags = flags; + +#if EV_USE_REALTIME + if (!have_realtime) + { + struct timespec ts; + + if (!clock_gettime (CLOCK_REALTIME, &ts)) + have_realtime = 1; + } +#endif + +#if EV_USE_MONOTONIC + if (!have_monotonic) + { + struct timespec ts; + + if (!clock_gettime (CLOCK_MONOTONIC, &ts)) + have_monotonic = 1; + } +#endif + + /* pid check not overridable via env */ +#ifndef _WIN32 + if (flags & EVFLAG_FORKCHECK) + curpid = getpid (); +#endif + + if (!(flags & EVFLAG_NOENV) + && !enable_secure () + && getenv ("LIBEV_FLAGS")) + flags = atoi (getenv ("LIBEV_FLAGS")); + + ev_rt_now = ev_time (); + mn_now = get_clock (); + now_floor = mn_now; + rtmn_diff = ev_rt_now - mn_now; +#if EV_FEATURE_API + invoke_cb = ev_invoke_pending; +#endif + + io_blocktime = 0.; + timeout_blocktime = 0.; + backend = 0; + backend_fd = -1; + sig_pending = 0; +#if EV_ASYNC_ENABLE + async_pending = 0; +#endif + pipe_write_skipped = 0; + pipe_write_wanted = 0; + evpipe [0] = -1; + evpipe [1] = -1; +#if EV_USE_INOTIFY + fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; +#endif +#if EV_USE_SIGNALFD + sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; +#endif + + if (!(flags & EVBACKEND_MASK)) + flags |= ev_recommended_backends (); + +#if EV_USE_IOCP + if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); +#endif +#if EV_USE_PORT + if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); +#endif +#if EV_USE_KQUEUE + if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); +#endif +#if EV_USE_EPOLL + if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); +#endif +#if EV_USE_POLL + if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); +#endif +#if EV_USE_SELECT + if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); +#endif + + ev_prepare_init (&pending_w, pendingcb); + +#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE + ev_init (&pipe_w, pipecb); + ev_set_priority (&pipe_w, EV_MAXPRI); +#endif + } +} + +/* free up a loop structure */ +void ecb_cold +ev_loop_destroy (EV_P) +{ + int i; + +#if EV_MULTIPLICITY + /* mimic free (0) */ + if (!EV_A) + return; +#endif + +#if EV_CLEANUP_ENABLE + /* queue cleanup watchers (and execute them) */ + if (expect_false (cleanupcnt)) + { + queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); + EV_INVOKE_PENDING; + } +#endif + +#if EV_CHILD_ENABLE + if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) + { + ev_ref (EV_A); /* child watcher */ + ev_signal_stop (EV_A_ &childev); + } +#endif + + if (ev_is_active (&pipe_w)) + { + /*ev_ref (EV_A);*/ + /*ev_io_stop (EV_A_ &pipe_w);*/ + + if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); + if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); + } + +#if EV_USE_SIGNALFD + if (ev_is_active (&sigfd_w)) + close (sigfd); +#endif + +#if EV_USE_INOTIFY + if (fs_fd >= 0) + close (fs_fd); +#endif + + if (backend_fd >= 0) + close (backend_fd); + +#if EV_USE_IOCP + if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); +#endif +#if EV_USE_PORT + if (backend == EVBACKEND_PORT ) port_destroy (EV_A); +#endif +#if EV_USE_KQUEUE + if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); +#endif +#if EV_USE_EPOLL + if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); +#endif +#if EV_USE_POLL + if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); +#endif +#if EV_USE_SELECT + if (backend == EVBACKEND_SELECT) select_destroy (EV_A); +#endif + + for (i = NUMPRI; i--; ) + { + array_free (pending, [i]); +#if EV_IDLE_ENABLE + array_free (idle, [i]); +#endif + } + + ev_free (anfds); anfds = 0; anfdmax = 0; + + /* have to use the microsoft-never-gets-it-right macro */ + array_free (rfeed, EMPTY); + array_free (fdchange, EMPTY); + array_free (timer, EMPTY); +#if EV_PERIODIC_ENABLE + array_free (periodic, EMPTY); +#endif +#if EV_FORK_ENABLE + array_free (fork, EMPTY); +#endif +#if EV_CLEANUP_ENABLE + array_free (cleanup, EMPTY); +#endif + array_free (prepare, EMPTY); + array_free (check, EMPTY); +#if EV_ASYNC_ENABLE + array_free (async, EMPTY); +#endif + + backend = 0; + +#if EV_MULTIPLICITY + if (ev_is_default_loop (EV_A)) +#endif + ev_default_loop_ptr = 0; +#if EV_MULTIPLICITY + else + ev_free (EV_A); +#endif +} + +#if EV_USE_INOTIFY +inline_size void infy_fork (EV_P); +#endif + +inline_size void +loop_fork (EV_P) +{ +#if EV_USE_PORT + if (backend == EVBACKEND_PORT ) port_fork (EV_A); +#endif +#if EV_USE_KQUEUE + if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); +#endif +#if EV_USE_EPOLL + if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); +#endif +#if EV_USE_INOTIFY + infy_fork (EV_A); +#endif + +#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE + if (ev_is_active (&pipe_w)) + { + /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ + + ev_ref (EV_A); + ev_io_stop (EV_A_ &pipe_w); + + if (evpipe [0] >= 0) + EV_WIN32_CLOSE_FD (evpipe [0]); + + evpipe_init (EV_A); + /* iterate over everything, in case we missed something before */ + ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); + } +#endif + + postfork = 0; +} + +#if EV_MULTIPLICITY + +struct ev_loop * ecb_cold +ev_loop_new (unsigned int flags) EV_THROW +{ + EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); + + memset (EV_A, 0, sizeof (struct ev_loop)); + loop_init (EV_A_ flags); + + if (ev_backend (EV_A)) + return EV_A; + + ev_free (EV_A); + return 0; +} + +#endif /* multiplicity */ + +#if EV_VERIFY +static void noinline ecb_cold +verify_watcher (EV_P_ W w) +{ + assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); + + if (w->pending) + assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); +} + +static void noinline ecb_cold +verify_heap (EV_P_ ANHE *heap, int N) +{ + int i; + + for (i = HEAP0; i < N + HEAP0; ++i) + { + assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); + assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); + assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); + + verify_watcher (EV_A_ (W)ANHE_w (heap [i])); + } +} + +static void noinline ecb_cold +array_verify (EV_P_ W *ws, int cnt) +{ + while (cnt--) + { + assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); + verify_watcher (EV_A_ ws [cnt]); + } +} +#endif + +#if EV_FEATURE_API +void ecb_cold +ev_verify (EV_P) EV_THROW +{ +#if EV_VERIFY + int i; + WL w, w2; + + assert (activecnt >= -1); + + assert (fdchangemax >= fdchangecnt); + for (i = 0; i < fdchangecnt; ++i) + assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); + + assert (anfdmax >= 0); + for (i = 0; i < anfdmax; ++i) + { + int j = 0; + + for (w = w2 = anfds [i].head; w; w = w->next) + { + verify_watcher (EV_A_ (W)w); + + if (j++ & 1) + { + assert (("libev: io watcher list contains a loop", w != w2)); + w2 = w2->next; + } + + assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); + assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); + } + } + + assert (timermax >= timercnt); + verify_heap (EV_A_ timers, timercnt); + +#if EV_PERIODIC_ENABLE + assert (periodicmax >= periodiccnt); + verify_heap (EV_A_ periodics, periodiccnt); +#endif + + for (i = NUMPRI; i--; ) + { + assert (pendingmax [i] >= pendingcnt [i]); +#if EV_IDLE_ENABLE + assert (idleall >= 0); + assert (idlemax [i] >= idlecnt [i]); + array_verify (EV_A_ (W *)idles [i], idlecnt [i]); +#endif + } + +#if EV_FORK_ENABLE + assert (forkmax >= forkcnt); + array_verify (EV_A_ (W *)forks, forkcnt); +#endif + +#if EV_CLEANUP_ENABLE + assert (cleanupmax >= cleanupcnt); + array_verify (EV_A_ (W *)cleanups, cleanupcnt); +#endif + +#if EV_ASYNC_ENABLE + assert (asyncmax >= asynccnt); + array_verify (EV_A_ (W *)asyncs, asynccnt); +#endif + +#if EV_PREPARE_ENABLE + assert (preparemax >= preparecnt); + array_verify (EV_A_ (W *)prepares, preparecnt); +#endif + +#if EV_CHECK_ENABLE + assert (checkmax >= checkcnt); + array_verify (EV_A_ (W *)checks, checkcnt); +#endif + +# if 0 +#if EV_CHILD_ENABLE + for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) + for (signum = EV_NSIG - 1; signum--; ) if (signals [signum].pending) +#endif +# endif +#endif +} +#endif + +#if EV_MULTIPLICITY +struct ev_loop * ecb_cold +#else +int +#endif +ev_default_loop (unsigned int flags) EV_THROW +{ + if (!ev_default_loop_ptr) + { +#if EV_MULTIPLICITY + EV_P = ev_default_loop_ptr = &default_loop_struct; +#else + ev_default_loop_ptr = 1; +#endif + + loop_init (EV_A_ flags); + + if (ev_backend (EV_A)) + { +#if EV_CHILD_ENABLE + ev_signal_init (&childev, childcb, SIGCHLD); + ev_set_priority (&childev, EV_MAXPRI); + ev_signal_start (EV_A_ &childev); + ev_unref (EV_A); /* child watcher should not keep loop alive */ +#endif + } + else + ev_default_loop_ptr = 0; + } + + return ev_default_loop_ptr; +} + +void +ev_loop_fork (EV_P) EV_THROW +{ + postfork = 1; +} + +/*****************************************************************************/ + +void +ev_invoke (EV_P_ void *w, int revents) +{ + EV_CB_INVOKE ((W)w, revents); +} + +unsigned int +ev_pending_count (EV_P) EV_THROW +{ + int pri; + unsigned int count = 0; + + for (pri = NUMPRI; pri--; ) + count += pendingcnt [pri]; + + return count; +} + +void noinline +ev_invoke_pending (EV_P) +{ + pendingpri = NUMPRI; + + while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ + { + --pendingpri; + + while (pendingcnt [pendingpri]) + { + ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; + + p->w->pending = 0; + EV_CB_INVOKE (p->w, p->events); + EV_FREQUENT_CHECK; + } + } +} + +#if EV_IDLE_ENABLE +/* make idle watchers pending. this handles the "call-idle */ +/* only when higher priorities are idle" logic */ +inline_size void +idle_reify (EV_P) +{ + if (expect_false (idleall)) + { + int pri; + + for (pri = NUMPRI; pri--; ) + { + if (pendingcnt [pri]) + break; + + if (idlecnt [pri]) + { + queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); + break; + } + } + } +} +#endif + +/* make timers pending */ +inline_size void +timers_reify (EV_P) +{ + EV_FREQUENT_CHECK; + + if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) + { + do + { + ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); + + /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ + + /* first reschedule or stop timer */ + if (w->repeat) + { + ev_at (w) += w->repeat; + if (ev_at (w) < mn_now) + ev_at (w) = mn_now; + + assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); + + ANHE_at_cache (timers [HEAP0]); + downheap (timers, timercnt, HEAP0); + } + else + ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ + + EV_FREQUENT_CHECK; + feed_reverse (EV_A_ (W)w); + } + while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); + + feed_reverse_done (EV_A_ EV_TIMER); + } +} + +#if EV_PERIODIC_ENABLE + +static void noinline +periodic_recalc (EV_P_ ev_periodic *w) +{ + ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; + ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); + + /* the above almost always errs on the low side */ + while (at <= ev_rt_now) + { + ev_tstamp nat = at + w->interval; + + /* when resolution fails us, we use ev_rt_now */ + if (expect_false (nat == at)) + { + at = ev_rt_now; + break; + } + + at = nat; + } + + ev_at (w) = at; +} + +/* make periodics pending */ +inline_size void +periodics_reify (EV_P) +{ + EV_FREQUENT_CHECK; + + while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) + { + do + { + ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); + + /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ + + /* first reschedule or stop timer */ + if (w->reschedule_cb) + { + ev_at (w) = w->reschedule_cb (w, ev_rt_now); + + assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); + + ANHE_at_cache (periodics [HEAP0]); + downheap (periodics, periodiccnt, HEAP0); + } + else if (w->interval) + { + periodic_recalc (EV_A_ w); + ANHE_at_cache (periodics [HEAP0]); + downheap (periodics, periodiccnt, HEAP0); + } + else + ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ + + EV_FREQUENT_CHECK; + feed_reverse (EV_A_ (W)w); + } + while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); + + feed_reverse_done (EV_A_ EV_PERIODIC); + } +} + +/* simply recalculate all periodics */ +/* TODO: maybe ensure that at least one event happens when jumping forward? */ +static void noinline ecb_cold +periodics_reschedule (EV_P) +{ + int i; + + /* adjust periodics after time jump */ + for (i = HEAP0; i < periodiccnt + HEAP0; ++i) + { + ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); + + if (w->reschedule_cb) + ev_at (w) = w->reschedule_cb (w, ev_rt_now); + else if (w->interval) + periodic_recalc (EV_A_ w); + + ANHE_at_cache (periodics [i]); + } + + reheap (periodics, periodiccnt); +} +#endif + +/* adjust all timers by a given offset */ +static void noinline ecb_cold +timers_reschedule (EV_P_ ev_tstamp adjust) +{ + int i; + + for (i = 0; i < timercnt; ++i) + { + ANHE *he = timers + i + HEAP0; + ANHE_w (*he)->at += adjust; + ANHE_at_cache (*he); + } +} + +/* fetch new monotonic and realtime times from the kernel */ +/* also detect if there was a timejump, and act accordingly */ +inline_speed void +time_update (EV_P_ ev_tstamp max_block) +{ +#if EV_USE_MONOTONIC + if (expect_true (have_monotonic)) + { + int i; + ev_tstamp odiff = rtmn_diff; + + mn_now = get_clock (); + + /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ + /* interpolate in the meantime */ + if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) + { + ev_rt_now = rtmn_diff + mn_now; + return; + } + + now_floor = mn_now; + ev_rt_now = ev_time (); + + /* loop a few times, before making important decisions. + * on the choice of "4": one iteration isn't enough, + * in case we get preempted during the calls to + * ev_time and get_clock. a second call is almost guaranteed + * to succeed in that case, though. and looping a few more times + * doesn't hurt either as we only do this on time-jumps or + * in the unlikely event of having been preempted here. + */ + for (i = 4; --i; ) + { + ev_tstamp diff; + rtmn_diff = ev_rt_now - mn_now; + + diff = odiff - rtmn_diff; + + if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) + return; /* all is well */ + + ev_rt_now = ev_time (); + mn_now = get_clock (); + now_floor = mn_now; + } + + /* no timer adjustment, as the monotonic clock doesn't jump */ + /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ +# if EV_PERIODIC_ENABLE + periodics_reschedule (EV_A); +# endif + } + else +#endif + { + ev_rt_now = ev_time (); + + if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) + { + /* adjust timers. this is easy, as the offset is the same for all of them */ + timers_reschedule (EV_A_ ev_rt_now - mn_now); +#if EV_PERIODIC_ENABLE + periodics_reschedule (EV_A); +#endif + } + + mn_now = ev_rt_now; + } +} + +int +ev_run (EV_P_ int flags) +{ +#if EV_FEATURE_API + ++loop_depth; +#endif + + assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); + + loop_done = EVBREAK_CANCEL; + + EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ + + do + { +#if EV_VERIFY >= 2 + ev_verify (EV_A); +#endif + +#ifndef _WIN32 + if (expect_false (curpid)) /* penalise the forking check even more */ + if (expect_false (getpid () != curpid)) + { + curpid = getpid (); + postfork = 1; + } +#endif + +#if EV_FORK_ENABLE + /* we might have forked, so queue fork handlers */ + if (expect_false (postfork)) + if (forkcnt) + { + queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); + EV_INVOKE_PENDING; + } +#endif + +#if EV_PREPARE_ENABLE + /* queue prepare watchers (and execute them) */ + if (expect_false (preparecnt)) + { + queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); + EV_INVOKE_PENDING; + } +#endif + + if (expect_false (loop_done)) + break; + + /* we might have forked, so reify kernel state if necessary */ + if (expect_false (postfork)) + loop_fork (EV_A); + + /* update fd-related kernel structures */ + fd_reify (EV_A); + + /* calculate blocking time */ + { + ev_tstamp waittime = 0.; + ev_tstamp sleeptime = 0.; + + /* remember old timestamp for io_blocktime calculation */ + ev_tstamp prev_mn_now = mn_now; + + /* update time to cancel out callback processing overhead */ + time_update (EV_A_ 1e100); + + /* from now on, we want a pipe-wake-up */ + pipe_write_wanted = 1; + + ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ + + if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) + { + waittime = MAX_BLOCKTIME; + + if (timercnt) + { + ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; + if (waittime > to) waittime = to; + } + +#if EV_PERIODIC_ENABLE + if (periodiccnt) + { + ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; + if (waittime > to) waittime = to; + } +#endif + + /* don't let timeouts decrease the waittime below timeout_blocktime */ + if (expect_false (waittime < timeout_blocktime)) + waittime = timeout_blocktime; + + /* at this point, we NEED to wait, so we have to ensure */ + /* to pass a minimum nonzero value to the backend */ + if (expect_false (waittime < backend_mintime)) + waittime = backend_mintime; + + /* extra check because io_blocktime is commonly 0 */ + if (expect_false (io_blocktime)) + { + sleeptime = io_blocktime - (mn_now - prev_mn_now); + + if (sleeptime > waittime - backend_mintime) + sleeptime = waittime - backend_mintime; + + if (expect_true (sleeptime > 0.)) + { + ev_sleep (sleeptime); + waittime -= sleeptime; + } + } + } + +#if EV_FEATURE_API + ++loop_count; +#endif + assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ + backend_poll (EV_A_ waittime); + assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ + + pipe_write_wanted = 0; /* just an optimisation, no fence needed */ + + ECB_MEMORY_FENCE_ACQUIRE; + if (pipe_write_skipped) + { + assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); + ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); + } + + + /* update ev_rt_now, do magic */ + time_update (EV_A_ waittime + sleeptime); + } + + /* queue pending timers and reschedule them */ + timers_reify (EV_A); /* relative timers called last */ +#if EV_PERIODIC_ENABLE + periodics_reify (EV_A); /* absolute timers called first */ +#endif + +#if EV_IDLE_ENABLE + /* queue idle watchers unless other events are pending */ + idle_reify (EV_A); +#endif + +#if EV_CHECK_ENABLE + /* queue check watchers, to be executed first */ + if (expect_false (checkcnt)) + queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); +#endif + + EV_INVOKE_PENDING; + } + while (expect_true ( + activecnt + && !loop_done + && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) + )); + + if (loop_done == EVBREAK_ONE) + loop_done = EVBREAK_CANCEL; + +#if EV_FEATURE_API + --loop_depth; +#endif + + return activecnt; +} + +void +ev_break (EV_P_ int how) EV_THROW +{ + loop_done = how; +} + +void +ev_ref (EV_P) EV_THROW +{ + ++activecnt; +} + +void +ev_unref (EV_P) EV_THROW +{ + --activecnt; +} + +void +ev_now_update (EV_P) EV_THROW +{ + time_update (EV_A_ 1e100); +} + +void +ev_suspend (EV_P) EV_THROW +{ + ev_now_update (EV_A); +} + +void +ev_resume (EV_P) EV_THROW +{ + ev_tstamp mn_prev = mn_now; + + ev_now_update (EV_A); + timers_reschedule (EV_A_ mn_now - mn_prev); +#if EV_PERIODIC_ENABLE + /* TODO: really do this? */ + periodics_reschedule (EV_A); +#endif +} + +/*****************************************************************************/ +/* singly-linked list management, used when the expected list length is short */ + +inline_size void +wlist_add (WL *head, WL elem) +{ + elem->next = *head; + *head = elem; +} + +inline_size void +wlist_del (WL *head, WL elem) +{ + while (*head) + { + if (expect_true (*head == elem)) + { + *head = elem->next; + break; + } + + head = &(*head)->next; + } +} + +/* internal, faster, version of ev_clear_pending */ +inline_speed void +clear_pending (EV_P_ W w) +{ + if (w->pending) + { + pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; + w->pending = 0; + } +} + +int +ev_clear_pending (EV_P_ void *w) EV_THROW +{ + W w_ = (W)w; + int pending = w_->pending; + + if (expect_true (pending)) + { + ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; + p->w = (W)&pending_w; + w_->pending = 0; + return p->events; + } + else + return 0; +} + +inline_size void +pri_adjust (EV_P_ W w) +{ + int pri = ev_priority (w); + pri = pri < EV_MINPRI ? EV_MINPRI : pri; + pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; + ev_set_priority (w, pri); +} + +inline_speed void +ev_start (EV_P_ W w, int active) +{ + pri_adjust (EV_A_ w); + w->active = active; + ev_ref (EV_A); +} + +inline_size void +ev_stop (EV_P_ W w) +{ + ev_unref (EV_A); + w->active = 0; +} + +/*****************************************************************************/ + +void noinline +ev_io_start (EV_P_ ev_io *w) EV_THROW +{ + int fd = w->fd; + + if (expect_false (ev_is_active (w))) + return; + + assert (("libev: ev_io_start called with negative fd", fd >= 0)); + assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); + + EV_FREQUENT_CHECK; + + ev_start (EV_A_ (W)w, 1); + array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); + wlist_add (&anfds[fd].head, (WL)w); + + /* common bug, apparently */ + assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); + + fd_change (EV_A_ fd, (w->events & EV__IOFDSET) | EV_ANFD_REIFY); + w->events &= ~EV__IOFDSET; + + EV_FREQUENT_CHECK; +} + +void noinline +ev_io_stop (EV_P_ ev_io *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); + + EV_FREQUENT_CHECK; + + wlist_del (&anfds[w->fd].head, (WL)w); + ev_stop (EV_A_ (W)w); + + fd_change (EV_A_ w->fd, EV_ANFD_REIFY); + + EV_FREQUENT_CHECK; +} + +void noinline +ev_timer_start (EV_P_ ev_timer *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + ev_at (w) += mn_now; + + assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); + + EV_FREQUENT_CHECK; + + ++timercnt; + ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); + array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); + ANHE_w (timers [ev_active (w)]) = (WT)w; + ANHE_at_cache (timers [ev_active (w)]); + upheap (timers, ev_active (w)); + + EV_FREQUENT_CHECK; + + /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ +} + +void noinline +ev_timer_stop (EV_P_ ev_timer *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + { + int active = ev_active (w); + + assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); + + --timercnt; + + if (expect_true (active < timercnt + HEAP0)) + { + timers [active] = timers [timercnt + HEAP0]; + adjustheap (timers, timercnt, active); + } + } + + ev_at (w) -= mn_now; + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} + +void noinline +ev_timer_again (EV_P_ ev_timer *w) EV_THROW +{ + EV_FREQUENT_CHECK; + + clear_pending (EV_A_ (W)w); + + if (ev_is_active (w)) + { + if (w->repeat) + { + ev_at (w) = mn_now + w->repeat; + ANHE_at_cache (timers [ev_active (w)]); + adjustheap (timers, timercnt, ev_active (w)); + } + else + ev_timer_stop (EV_A_ w); + } + else if (w->repeat) + { + ev_at (w) = w->repeat; + ev_timer_start (EV_A_ w); + } + + EV_FREQUENT_CHECK; +} + +ev_tstamp +ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW +{ + return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); +} + +#if EV_PERIODIC_ENABLE +void noinline +ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + if (w->reschedule_cb) + ev_at (w) = w->reschedule_cb (w, ev_rt_now); + else if (w->interval) + { + assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); + periodic_recalc (EV_A_ w); + } + else + ev_at (w) = w->offset; + + EV_FREQUENT_CHECK; + + ++periodiccnt; + ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); + array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); + ANHE_w (periodics [ev_active (w)]) = (WT)w; + ANHE_at_cache (periodics [ev_active (w)]); + upheap (periodics, ev_active (w)); + + EV_FREQUENT_CHECK; + + /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ +} + +void noinline +ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + { + int active = ev_active (w); + + assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); + + --periodiccnt; + + if (expect_true (active < periodiccnt + HEAP0)) + { + periodics [active] = periodics [periodiccnt + HEAP0]; + adjustheap (periodics, periodiccnt, active); + } + } + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} + +void noinline +ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW +{ + /* TODO: use adjustheap and recalculation */ + ev_periodic_stop (EV_A_ w); + ev_periodic_start (EV_A_ w); +} +#endif + +#ifndef SA_RESTART +# define SA_RESTART 0 +#endif + +#if EV_SIGNAL_ENABLE + +void noinline +ev_signal_start (EV_P_ ev_signal *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); + +#if EV_MULTIPLICITY + assert (("libev: a signal must not be attached to two different loops", + !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); + + signals [w->signum - 1].loop = EV_A; + ECB_MEMORY_FENCE_RELEASE; +#endif + + EV_FREQUENT_CHECK; + +#if EV_USE_SIGNALFD + if (sigfd == -2) + { + sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); + if (sigfd < 0 && errno == EINVAL) + sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ + + if (sigfd >= 0) + { + fd_intern (sigfd); /* doing it twice will not hurt */ + + sigemptyset (&sigfd_set); + + ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); + ev_set_priority (&sigfd_w, EV_MAXPRI); + ev_io_start (EV_A_ &sigfd_w); + ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ + } + } + + if (sigfd >= 0) + { + /* TODO: check .head */ + sigaddset (&sigfd_set, w->signum); + sigprocmask (SIG_BLOCK, &sigfd_set, 0); + + signalfd (sigfd, &sigfd_set, 0); + } +#endif + + ev_start (EV_A_ (W)w, 1); + wlist_add (&signals [w->signum - 1].head, (WL)w); + + if (!((WL)w)->next) +# if EV_USE_SIGNALFD + if (sigfd < 0) /*TODO*/ +# endif + { +# ifdef _WIN32 + evpipe_init (EV_A); + + signal (w->signum, ev_sighandler); +# else + struct sigaction sa; + + evpipe_init (EV_A); + + sa.sa_handler = ev_sighandler; + sigfillset (&sa.sa_mask); + sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ + sigaction (w->signum, &sa, 0); + + if (origflags & EVFLAG_NOSIGMASK) + { + sigemptyset (&sa.sa_mask); + sigaddset (&sa.sa_mask, w->signum); + sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); + } +#endif + } + + EV_FREQUENT_CHECK; +} + +void noinline +ev_signal_stop (EV_P_ ev_signal *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + wlist_del (&signals [w->signum - 1].head, (WL)w); + ev_stop (EV_A_ (W)w); + + if (!signals [w->signum - 1].head) + { +#if EV_MULTIPLICITY + signals [w->signum - 1].loop = 0; /* unattach from signal */ +#endif +#if EV_USE_SIGNALFD + if (sigfd >= 0) + { + sigset_t ss; + + sigemptyset (&ss); + sigaddset (&ss, w->signum); + sigdelset (&sigfd_set, w->signum); + + signalfd (sigfd, &sigfd_set, 0); + sigprocmask (SIG_UNBLOCK, &ss, 0); + } + else +#endif + signal (w->signum, SIG_DFL); + } + + EV_FREQUENT_CHECK; +} + +#endif + +#if EV_CHILD_ENABLE + +void +ev_child_start (EV_P_ ev_child *w) EV_THROW +{ +#if EV_MULTIPLICITY + assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); +#endif + if (expect_false (ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + ev_start (EV_A_ (W)w, 1); + wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); + + EV_FREQUENT_CHECK; +} + +void +ev_child_stop (EV_P_ ev_child *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} + +#endif + +#if EV_STAT_ENABLE + +# ifdef _WIN32 +# undef lstat +# define lstat(a,b) _stati64 (a,b) +# endif + +#define DEF_STAT_INTERVAL 5.0074891 +#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ +#define MIN_STAT_INTERVAL 0.1074891 + +static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); + +#if EV_USE_INOTIFY + +/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ +# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) + +static void noinline +infy_add (EV_P_ ev_stat *w) +{ + w->wd = inotify_add_watch (fs_fd, w->path, + IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY + | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO + | IN_DONT_FOLLOW | IN_MASK_ADD); + + if (w->wd >= 0) + { + struct statfs sfs; + + /* now local changes will be tracked by inotify, but remote changes won't */ + /* unless the filesystem is known to be local, we therefore still poll */ + /* also do poll on <2.6.25, but with normal frequency */ + + if (!fs_2625) + w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; + else if (!statfs (w->path, &sfs) + && (sfs.f_type == 0x1373 /* devfs */ + || sfs.f_type == 0x4006 /* fat */ + || sfs.f_type == 0x4d44 /* msdos */ + || sfs.f_type == 0xEF53 /* ext2/3 */ + || sfs.f_type == 0x72b6 /* jffs2 */ + || sfs.f_type == 0x858458f6 /* ramfs */ + || sfs.f_type == 0x5346544e /* ntfs */ + || sfs.f_type == 0x3153464a /* jfs */ + || sfs.f_type == 0x9123683e /* btrfs */ + || sfs.f_type == 0x52654973 /* reiser3 */ + || sfs.f_type == 0x01021994 /* tmpfs */ + || sfs.f_type == 0x58465342 /* xfs */)) + w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ + else + w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ + } + else + { + /* can't use inotify, continue to stat */ + w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; + + /* if path is not there, monitor some parent directory for speedup hints */ + /* note that exceeding the hardcoded path limit is not a correctness issue, */ + /* but an efficiency issue only */ + if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) + { + char path [4096]; + strcpy (path, w->path); + + do + { + int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF + | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); + + char *pend = strrchr (path, '/'); + + if (!pend || pend == path) + break; + + *pend = 0; + w->wd = inotify_add_watch (fs_fd, path, mask); + } + while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); + } + } + + if (w->wd >= 0) + wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); + + /* now re-arm timer, if required */ + if (ev_is_active (&w->timer)) ev_ref (EV_A); + ev_timer_again (EV_A_ &w->timer); + if (ev_is_active (&w->timer)) ev_unref (EV_A); +} + +static void noinline +infy_del (EV_P_ ev_stat *w) +{ + int slot; + int wd = w->wd; + + if (wd < 0) + return; + + w->wd = -2; + slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); + wlist_del (&fs_hash [slot].head, (WL)w); + + /* remove this watcher, if others are watching it, they will rearm */ + inotify_rm_watch (fs_fd, wd); +} + +static void noinline +infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) +{ + if (slot < 0) + /* overflow, need to check for all hash slots */ + for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) + infy_wd (EV_A_ slot, wd, ev); + else + { + WL w_; + + for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) + { + ev_stat *w = (ev_stat *)w_; + w_ = w_->next; /* lets us remove this watcher and all before it */ + + if (w->wd == wd || wd == -1) + { + if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) + { + wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); + w->wd = -1; + infy_add (EV_A_ w); /* re-add, no matter what */ + } + + stat_timer_cb (EV_A_ &w->timer, 0); + } + } + } +} + +static void +infy_cb (EV_P_ ev_io *w, int revents) +{ + char buf [EV_INOTIFY_BUFSIZE]; + int ofs; + int len = read (fs_fd, buf, sizeof (buf)); + + for (ofs = 0; ofs < len; ) + { + struct inotify_event *ev = (struct inotify_event *)(buf + ofs); + infy_wd (EV_A_ ev->wd, ev->wd, ev); + ofs += sizeof (struct inotify_event) + ev->len; + } +} + +inline_size void ecb_cold +ev_check_2625 (EV_P) +{ + /* kernels < 2.6.25 are borked + * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html + */ + if (ev_linux_version () < 0x020619) + return; + + fs_2625 = 1; +} + +inline_size int +infy_newfd (void) +{ +#if defined IN_CLOEXEC && defined IN_NONBLOCK + int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); + if (fd >= 0) + return fd; +#endif + return inotify_init (); +} + +inline_size void +infy_init (EV_P) +{ + if (fs_fd != -2) + return; + + fs_fd = -1; + + ev_check_2625 (EV_A); + + fs_fd = infy_newfd (); + + if (fs_fd >= 0) + { + fd_intern (fs_fd); + ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); + ev_set_priority (&fs_w, EV_MAXPRI); + ev_io_start (EV_A_ &fs_w); + ev_unref (EV_A); + } +} + +inline_size void +infy_fork (EV_P) +{ + int slot; + + if (fs_fd < 0) + return; + + ev_ref (EV_A); + ev_io_stop (EV_A_ &fs_w); + close (fs_fd); + fs_fd = infy_newfd (); + + if (fs_fd >= 0) + { + fd_intern (fs_fd); + ev_io_set (&fs_w, fs_fd, EV_READ); + ev_io_start (EV_A_ &fs_w); + ev_unref (EV_A); + } + + for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) + { + WL w_ = fs_hash [slot].head; + fs_hash [slot].head = 0; + + while (w_) + { + ev_stat *w = (ev_stat *)w_; + w_ = w_->next; /* lets us add this watcher */ + + w->wd = -1; + + if (fs_fd >= 0) + infy_add (EV_A_ w); /* re-add, no matter what */ + else + { + w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; + if (ev_is_active (&w->timer)) ev_ref (EV_A); + ev_timer_again (EV_A_ &w->timer); + if (ev_is_active (&w->timer)) ev_unref (EV_A); + } + } + } +} + +#endif + +#ifdef _WIN32 +# define EV_LSTAT(p,b) _stati64 (p, b) +#else +# define EV_LSTAT(p,b) lstat (p, b) +#endif + +void +ev_stat_stat (EV_P_ ev_stat *w) EV_THROW +{ + if (lstat (w->path, &w->attr) < 0) + w->attr.st_nlink = 0; + else if (!w->attr.st_nlink) + w->attr.st_nlink = 1; +} + +static void noinline +stat_timer_cb (EV_P_ ev_timer *w_, int revents) +{ + ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); + + ev_statdata prev = w->attr; + ev_stat_stat (EV_A_ w); + + /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ + if ( + prev.st_dev != w->attr.st_dev + || prev.st_ino != w->attr.st_ino + || prev.st_mode != w->attr.st_mode + || prev.st_nlink != w->attr.st_nlink + || prev.st_uid != w->attr.st_uid + || prev.st_gid != w->attr.st_gid + || prev.st_rdev != w->attr.st_rdev + || prev.st_size != w->attr.st_size + || prev.st_atime != w->attr.st_atime + || prev.st_mtime != w->attr.st_mtime + || prev.st_ctime != w->attr.st_ctime + ) { + /* we only update w->prev on actual differences */ + /* in case we test more often than invoke the callback, */ + /* to ensure that prev is always different to attr */ + w->prev = prev; + + #if EV_USE_INOTIFY + if (fs_fd >= 0) + { + infy_del (EV_A_ w); + infy_add (EV_A_ w); + ev_stat_stat (EV_A_ w); /* avoid race... */ + } + #endif + + ev_feed_event (EV_A_ w, EV_STAT); + } +} + +void +ev_stat_start (EV_P_ ev_stat *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + ev_stat_stat (EV_A_ w); + + if (w->interval < MIN_STAT_INTERVAL && w->interval) + w->interval = MIN_STAT_INTERVAL; + + ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); + ev_set_priority (&w->timer, ev_priority (w)); + +#if EV_USE_INOTIFY + infy_init (EV_A); + + if (fs_fd >= 0) + infy_add (EV_A_ w); + else +#endif + { + ev_timer_again (EV_A_ &w->timer); + ev_unref (EV_A); + } + + ev_start (EV_A_ (W)w, 1); + + EV_FREQUENT_CHECK; +} + +void +ev_stat_stop (EV_P_ ev_stat *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + +#if EV_USE_INOTIFY + infy_del (EV_A_ w); +#endif + + if (ev_is_active (&w->timer)) + { + ev_ref (EV_A); + ev_timer_stop (EV_A_ &w->timer); + } + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} +#endif + +#if EV_IDLE_ENABLE +void +ev_idle_start (EV_P_ ev_idle *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + pri_adjust (EV_A_ (W)w); + + EV_FREQUENT_CHECK; + + { + int active = ++idlecnt [ABSPRI (w)]; + + ++idleall; + ev_start (EV_A_ (W)w, active); + + array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); + idles [ABSPRI (w)][active - 1] = w; + } + + EV_FREQUENT_CHECK; +} + +void +ev_idle_stop (EV_P_ ev_idle *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + { + int active = ev_active (w); + + idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; + ev_active (idles [ABSPRI (w)][active - 1]) = active; + + ev_stop (EV_A_ (W)w); + --idleall; + } + + EV_FREQUENT_CHECK; +} +#endif + +#if EV_PREPARE_ENABLE +void +ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + ev_start (EV_A_ (W)w, ++preparecnt); + array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); + prepares [preparecnt - 1] = w; + + EV_FREQUENT_CHECK; +} + +void +ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + { + int active = ev_active (w); + + prepares [active - 1] = prepares [--preparecnt]; + ev_active (prepares [active - 1]) = active; + } + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} +#endif + +#if EV_CHECK_ENABLE +void +ev_check_start (EV_P_ ev_check *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + ev_start (EV_A_ (W)w, ++checkcnt); + array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); + checks [checkcnt - 1] = w; + + EV_FREQUENT_CHECK; +} + +void +ev_check_stop (EV_P_ ev_check *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + { + int active = ev_active (w); + + checks [active - 1] = checks [--checkcnt]; + ev_active (checks [active - 1]) = active; + } + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} +#endif + +#if EV_EMBED_ENABLE +void noinline +ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW +{ + ev_run (w->other, EVRUN_NOWAIT); +} + +static void +embed_io_cb (EV_P_ ev_io *io, int revents) +{ + ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); + + if (ev_cb (w)) + ev_feed_event (EV_A_ (W)w, EV_EMBED); + else + ev_run (w->other, EVRUN_NOWAIT); +} + +static void +embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) +{ + ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); + + { + EV_P = w->other; + + while (fdchangecnt) + { + fd_reify (EV_A); + ev_run (EV_A_ EVRUN_NOWAIT); + } + } +} + +static void +embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) +{ + ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); + + ev_embed_stop (EV_A_ w); + + { + EV_P = w->other; + + ev_loop_fork (EV_A); + ev_run (EV_A_ EVRUN_NOWAIT); + } + + ev_embed_start (EV_A_ w); +} + +#if 0 +static void +embed_idle_cb (EV_P_ ev_idle *idle, int revents) +{ + ev_idle_stop (EV_A_ idle); +} +#endif + +void +ev_embed_start (EV_P_ ev_embed *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + { + EV_P = w->other; + assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); + ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); + } + + EV_FREQUENT_CHECK; + + ev_set_priority (&w->io, ev_priority (w)); + ev_io_start (EV_A_ &w->io); + + ev_prepare_init (&w->prepare, embed_prepare_cb); + ev_set_priority (&w->prepare, EV_MINPRI); + ev_prepare_start (EV_A_ &w->prepare); + + ev_fork_init (&w->fork, embed_fork_cb); + ev_fork_start (EV_A_ &w->fork); + + /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ + + ev_start (EV_A_ (W)w, 1); + + EV_FREQUENT_CHECK; +} + +void +ev_embed_stop (EV_P_ ev_embed *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + ev_io_stop (EV_A_ &w->io); + ev_prepare_stop (EV_A_ &w->prepare); + ev_fork_stop (EV_A_ &w->fork); + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} +#endif + +#if EV_FORK_ENABLE +void +ev_fork_start (EV_P_ ev_fork *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + ev_start (EV_A_ (W)w, ++forkcnt); + array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); + forks [forkcnt - 1] = w; + + EV_FREQUENT_CHECK; +} + +void +ev_fork_stop (EV_P_ ev_fork *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + { + int active = ev_active (w); + + forks [active - 1] = forks [--forkcnt]; + ev_active (forks [active - 1]) = active; + } + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} +#endif + +#if EV_CLEANUP_ENABLE +void +ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + ev_start (EV_A_ (W)w, ++cleanupcnt); + array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); + cleanups [cleanupcnt - 1] = w; + + /* cleanup watchers should never keep a refcount on the loop */ + ev_unref (EV_A); + EV_FREQUENT_CHECK; +} + +void +ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + ev_ref (EV_A); + + { + int active = ev_active (w); + + cleanups [active - 1] = cleanups [--cleanupcnt]; + ev_active (cleanups [active - 1]) = active; + } + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} +#endif + +#if EV_ASYNC_ENABLE +void +ev_async_start (EV_P_ ev_async *w) EV_THROW +{ + if (expect_false (ev_is_active (w))) + return; + + w->sent = 0; + + evpipe_init (EV_A); + + EV_FREQUENT_CHECK; + + ev_start (EV_A_ (W)w, ++asynccnt); + array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); + asyncs [asynccnt - 1] = w; + + EV_FREQUENT_CHECK; +} + +void +ev_async_stop (EV_P_ ev_async *w) EV_THROW +{ + clear_pending (EV_A_ (W)w); + if (expect_false (!ev_is_active (w))) + return; + + EV_FREQUENT_CHECK; + + { + int active = ev_active (w); + + asyncs [active - 1] = asyncs [--asynccnt]; + ev_active (asyncs [active - 1]) = active; + } + + ev_stop (EV_A_ (W)w); + + EV_FREQUENT_CHECK; +} + +void +ev_async_send (EV_P_ ev_async *w) EV_THROW +{ + w->sent = 1; + evpipe_write (EV_A_ &async_pending); +} +#endif + +/*****************************************************************************/ + +struct ev_once +{ + ev_io io; + ev_timer to; + void (*cb)(int revents, void *arg); + void *arg; +}; + +static void +once_cb (EV_P_ struct ev_once *once, int revents) +{ + void (*cb)(int revents, void *arg) = once->cb; + void *arg = once->arg; + + ev_io_stop (EV_A_ &once->io); + ev_timer_stop (EV_A_ &once->to); + ev_free (once); + + cb (revents, arg); +} + +static void +once_cb_io (EV_P_ ev_io *w, int revents) +{ + struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); + + once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); +} + +static void +once_cb_to (EV_P_ ev_timer *w, int revents) +{ + struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); + + once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); +} + +void +ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW +{ + struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); + + if (expect_false (!once)) + { + cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); + return; + } + + once->cb = cb; + once->arg = arg; + + ev_init (&once->io, once_cb_io); + if (fd >= 0) + { + ev_io_set (&once->io, fd, events); + ev_io_start (EV_A_ &once->io); + } + + ev_init (&once->to, once_cb_to); + if (timeout >= 0.) + { + ev_timer_set (&once->to, timeout, 0.); + ev_timer_start (EV_A_ &once->to); + } +} + +/*****************************************************************************/ + +#if EV_WALK_ENABLE +void ecb_cold +ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW +{ + int i, j; + ev_watcher_list *wl, *wn; + + if (types & (EV_IO | EV_EMBED)) + for (i = 0; i < anfdmax; ++i) + for (wl = anfds [i].head; wl; ) + { + wn = wl->next; + +#if EV_EMBED_ENABLE + if (ev_cb ((ev_io *)wl) == embed_io_cb) + { + if (types & EV_EMBED) + cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); + } + else +#endif +#if EV_USE_INOTIFY + if (ev_cb ((ev_io *)wl) == infy_cb) + ; + else +#endif + if ((ev_io *)wl != &pipe_w) + if (types & EV_IO) + cb (EV_A_ EV_IO, wl); + + wl = wn; + } + + if (types & (EV_TIMER | EV_STAT)) + for (i = timercnt + HEAP0; i-- > HEAP0; ) +#if EV_STAT_ENABLE + /*TODO: timer is not always active*/ + if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) + { + if (types & EV_STAT) + cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); + } + else +#endif + if (types & EV_TIMER) + cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); + +#if EV_PERIODIC_ENABLE + if (types & EV_PERIODIC) + for (i = periodiccnt + HEAP0; i-- > HEAP0; ) + cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); +#endif + +#if EV_IDLE_ENABLE + if (types & EV_IDLE) + for (j = NUMPRI; j--; ) + for (i = idlecnt [j]; i--; ) + cb (EV_A_ EV_IDLE, idles [j][i]); +#endif + +#if EV_FORK_ENABLE + if (types & EV_FORK) + for (i = forkcnt; i--; ) + if (ev_cb (forks [i]) != embed_fork_cb) + cb (EV_A_ EV_FORK, forks [i]); +#endif + +#if EV_ASYNC_ENABLE + if (types & EV_ASYNC) + for (i = asynccnt; i--; ) + cb (EV_A_ EV_ASYNC, asyncs [i]); +#endif + +#if EV_PREPARE_ENABLE + if (types & EV_PREPARE) + for (i = preparecnt; i--; ) +# if EV_EMBED_ENABLE + if (ev_cb (prepares [i]) != embed_prepare_cb) +# endif + cb (EV_A_ EV_PREPARE, prepares [i]); +#endif + +#if EV_CHECK_ENABLE + if (types & EV_CHECK) + for (i = checkcnt; i--; ) + cb (EV_A_ EV_CHECK, checks [i]); +#endif + +#if EV_SIGNAL_ENABLE + if (types & EV_SIGNAL) + for (i = 0; i < EV_NSIG - 1; ++i) + for (wl = signals [i].head; wl; ) + { + wn = wl->next; + cb (EV_A_ EV_SIGNAL, wl); + wl = wn; + } +#endif + +#if EV_CHILD_ENABLE + if (types & EV_CHILD) + for (i = (EV_PID_HASHSIZE); i--; ) + for (wl = childs [i]; wl; ) + { + wn = wl->next; + cb (EV_A_ EV_CHILD, wl); + wl = wn; + } +#endif +/* EV_STAT 0x00001000 * stat data changed */ +/* EV_EMBED 0x00010000 * embedded event loop needs sweep */ +} +#endif + +#if EV_MULTIPLICITY + #include "ev_wrap.h" +#endif + diff --git a/framework/src/audit/src/libev/ev.h b/framework/src/audit/src/libev/ev.h new file mode 100644 index 00000000..7c6e7eb8 --- /dev/null +++ b/framework/src/audit/src/libev/ev.h @@ -0,0 +1,854 @@ +/* + * libev native API header + * + * Copyright (c) 2007,2008,2009,2010,2011,2012,2015 Marc Alexander Lehmann <libev@schmorp.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +#ifndef EV_H_ +#define EV_H_ + +#ifdef __cplusplus +# define EV_CPP(x) x +# if __cplusplus >= 201103L +# define EV_THROW noexcept +# else +# define EV_THROW throw () +# endif +#else +# define EV_CPP(x) +# define EV_THROW +#endif + +EV_CPP(extern "C" {) + +/*****************************************************************************/ + +/* pre-4.0 compatibility */ +#ifndef EV_COMPAT3 +# define EV_COMPAT3 1 +#endif + +#ifndef EV_FEATURES +# if defined __OPTIMIZE_SIZE__ +# define EV_FEATURES 0x7c +# else +# define EV_FEATURES 0x7f +# endif +#endif + +#define EV_FEATURE_CODE ((EV_FEATURES) & 1) +#define EV_FEATURE_DATA ((EV_FEATURES) & 2) +#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4) +#define EV_FEATURE_API ((EV_FEATURES) & 8) +#define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16) +#define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32) +#define EV_FEATURE_OS ((EV_FEATURES) & 64) + +/* these priorities are inclusive, higher priorities will be invoked earlier */ +#ifndef EV_MINPRI +# define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0) +#endif +#ifndef EV_MAXPRI +# define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0) +#endif + +#ifndef EV_MULTIPLICITY +# define EV_MULTIPLICITY EV_FEATURE_CONFIG +#endif + +#ifndef EV_PERIODIC_ENABLE +# define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_STAT_ENABLE +# define EV_STAT_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_PREPARE_ENABLE +# define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_CHECK_ENABLE +# define EV_CHECK_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_IDLE_ENABLE +# define EV_IDLE_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_FORK_ENABLE +# define EV_FORK_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_CLEANUP_ENABLE +# define EV_CLEANUP_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_SIGNAL_ENABLE +# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_CHILD_ENABLE +# ifdef _WIN32 +# define EV_CHILD_ENABLE 0 +# else +# define EV_CHILD_ENABLE EV_FEATURE_WATCHERS +#endif +#endif + +#ifndef EV_ASYNC_ENABLE +# define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_EMBED_ENABLE +# define EV_EMBED_ENABLE EV_FEATURE_WATCHERS +#endif + +#ifndef EV_WALK_ENABLE +# define EV_WALK_ENABLE 0 /* not yet */ +#endif + +/*****************************************************************************/ + +#if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE +# undef EV_SIGNAL_ENABLE +# define EV_SIGNAL_ENABLE 1 +#endif + +/*****************************************************************************/ + +typedef double ev_tstamp; + +#include <string.h> /* for memmove */ + +#ifndef EV_ATOMIC_T +# include <signal.h> +# define EV_ATOMIC_T sig_atomic_t volatile +#endif + +#if EV_STAT_ENABLE +# ifdef _WIN32 +# include <time.h> +# include <sys/types.h> +# endif +# include <sys/stat.h> +#endif + +/* support multiple event loops? */ +#if EV_MULTIPLICITY +struct ev_loop; +# define EV_P struct ev_loop *loop /* a loop as sole parameter in a declaration */ +# define EV_P_ EV_P, /* a loop as first of multiple parameters */ +# define EV_A loop /* a loop as sole argument to a function call */ +# define EV_A_ EV_A, /* a loop as first of multiple arguments */ +# define EV_DEFAULT_UC ev_default_loop_uc_ () /* the default loop, if initialised, as sole arg */ +# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */ +# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */ +# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */ +#else +# define EV_P void +# define EV_P_ +# define EV_A +# define EV_A_ +# define EV_DEFAULT +# define EV_DEFAULT_ +# define EV_DEFAULT_UC +# define EV_DEFAULT_UC_ +# undef EV_EMBED_ENABLE +#endif + +/* EV_INLINE is used for functions in header files */ +#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L || __GNUC__ >= 3 +# define EV_INLINE static inline +#else +# define EV_INLINE static +#endif + +#ifdef EV_API_STATIC +# define EV_API_DECL static +#else +# define EV_API_DECL extern +#endif + +/* EV_PROTOTYPES can be used to switch of prototype declarations */ +#ifndef EV_PROTOTYPES +# define EV_PROTOTYPES 1 +#endif + +/*****************************************************************************/ + +#define EV_VERSION_MAJOR 4 +#define EV_VERSION_MINOR 20 + +/* eventmask, revents, events... */ +enum { + EV_UNDEF = (int)0xFFFFFFFF, /* guaranteed to be invalid */ + EV_NONE = 0x00, /* no events */ + EV_READ = 0x01, /* ev_io detected read will not block */ + EV_WRITE = 0x02, /* ev_io detected write will not block */ + EV__IOFDSET = 0x80, /* internal use only */ + EV_IO = EV_READ, /* alias for type-detection */ + EV_TIMER = 0x00000100, /* timer timed out */ +#if EV_COMPAT3 + EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */ +#endif + EV_PERIODIC = 0x00000200, /* periodic timer timed out */ + EV_SIGNAL = 0x00000400, /* signal was received */ + EV_CHILD = 0x00000800, /* child/pid had status change */ + EV_STAT = 0x00001000, /* stat data changed */ + EV_IDLE = 0x00002000, /* event loop is idling */ + EV_PREPARE = 0x00004000, /* event loop about to poll */ + EV_CHECK = 0x00008000, /* event loop finished poll */ + EV_EMBED = 0x00010000, /* embedded event loop needs sweep */ + EV_FORK = 0x00020000, /* event loop resumed in child */ + EV_CLEANUP = 0x00040000, /* event loop resumed in child */ + EV_ASYNC = 0x00080000, /* async intra-loop signal */ + EV_CUSTOM = 0x01000000, /* for use by user code */ + EV_ERROR = (int)0x80000000 /* sent when an error occurs */ +}; + +/* can be used to add custom fields to all watchers, while losing binary compatibility */ +#ifndef EV_COMMON +# define EV_COMMON void *data; +#endif + +#ifndef EV_CB_DECLARE +# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); +#endif +#ifndef EV_CB_INVOKE +# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) +#endif + +/* not official, do not use */ +#define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents) + +/* + * struct member types: + * private: you may look at them, but not change them, + * and they might not mean anything to you. + * ro: can be read anytime, but only changed when the watcher isn't active. + * rw: can be read and modified anytime, even when the watcher is active. + * + * some internal details that might be helpful for debugging: + * + * active is either 0, which means the watcher is not active, + * or the array index of the watcher (periodics, timers) + * or the array index + 1 (most other watchers) + * or simply 1 for watchers that aren't in some array. + * pending is either 0, in which case the watcher isn't, + * or the array index + 1 in the pendings array. + */ + +#if EV_MINPRI == EV_MAXPRI +# define EV_DECL_PRIORITY +#elif !defined (EV_DECL_PRIORITY) +# define EV_DECL_PRIORITY int priority; +#endif + +/* shared by all watchers */ +#define EV_WATCHER(type) \ + int active; /* private */ \ + int pending; /* private */ \ + EV_DECL_PRIORITY /* private */ \ + EV_COMMON /* rw */ \ + EV_CB_DECLARE (type) /* private */ + +#define EV_WATCHER_LIST(type) \ + EV_WATCHER (type) \ + struct ev_watcher_list *next; /* private */ + +#define EV_WATCHER_TIME(type) \ + EV_WATCHER (type) \ + ev_tstamp at; /* private */ + +/* base class, nothing to see here unless you subclass */ +typedef struct ev_watcher +{ + EV_WATCHER (ev_watcher) +} ev_watcher; + +/* base class, nothing to see here unless you subclass */ +typedef struct ev_watcher_list +{ + EV_WATCHER_LIST (ev_watcher_list) +} ev_watcher_list; + +/* base class, nothing to see here unless you subclass */ +typedef struct ev_watcher_time +{ + EV_WATCHER_TIME (ev_watcher_time) +} ev_watcher_time; + +/* invoked when fd is either EV_READable or EV_WRITEable */ +/* revent EV_READ, EV_WRITE */ +typedef struct ev_io +{ + EV_WATCHER_LIST (ev_io) + + int fd; /* ro */ + int events; /* ro */ +} ev_io; + +/* invoked after a specific time, repeatable (based on monotonic clock) */ +/* revent EV_TIMEOUT */ +typedef struct ev_timer +{ + EV_WATCHER_TIME (ev_timer) + + ev_tstamp repeat; /* rw */ +} ev_timer; + +/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ +/* revent EV_PERIODIC */ +typedef struct ev_periodic +{ + EV_WATCHER_TIME (ev_periodic) + + ev_tstamp offset; /* rw */ + ev_tstamp interval; /* rw */ + ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now) EV_THROW; /* rw */ +} ev_periodic; + +/* invoked when the given signal has been received */ +/* revent EV_SIGNAL */ +typedef struct ev_signal +{ + EV_WATCHER_LIST (ev_signal) + + int signum; /* ro */ +} ev_signal; + +/* invoked when sigchld is received and waitpid indicates the given pid */ +/* revent EV_CHILD */ +/* does not support priorities */ +typedef struct ev_child +{ + EV_WATCHER_LIST (ev_child) + + int flags; /* private */ + int pid; /* ro */ + int rpid; /* rw, holds the received pid */ + int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ +} ev_child; + +#if EV_STAT_ENABLE +/* st_nlink = 0 means missing file or other error */ +# ifdef _WIN32 +typedef struct _stati64 ev_statdata; +# else +typedef struct stat ev_statdata; +# endif + +/* invoked each time the stat data changes for a given path */ +/* revent EV_STAT */ +typedef struct ev_stat +{ + EV_WATCHER_LIST (ev_stat) + + ev_timer timer; /* private */ + ev_tstamp interval; /* ro */ + const char *path; /* ro */ + ev_statdata prev; /* ro */ + ev_statdata attr; /* ro */ + + int wd; /* wd for inotify, fd for kqueue */ +} ev_stat; +#endif + +#if EV_IDLE_ENABLE +/* invoked when the nothing else needs to be done, keeps the process from blocking */ +/* revent EV_IDLE */ +typedef struct ev_idle +{ + EV_WATCHER (ev_idle) +} ev_idle; +#endif + +/* invoked for each run of the mainloop, just before the blocking call */ +/* you can still change events in any way you like */ +/* revent EV_PREPARE */ +typedef struct ev_prepare +{ + EV_WATCHER (ev_prepare) +} ev_prepare; + +/* invoked for each run of the mainloop, just after the blocking call */ +/* revent EV_CHECK */ +typedef struct ev_check +{ + EV_WATCHER (ev_check) +} ev_check; + +#if EV_FORK_ENABLE +/* the callback gets invoked before check in the child process when a fork was detected */ +/* revent EV_FORK */ +typedef struct ev_fork +{ + EV_WATCHER (ev_fork) +} ev_fork; +#endif + +#if EV_CLEANUP_ENABLE +/* is invoked just before the loop gets destroyed */ +/* revent EV_CLEANUP */ +typedef struct ev_cleanup +{ + EV_WATCHER (ev_cleanup) +} ev_cleanup; +#endif + +#if EV_EMBED_ENABLE +/* used to embed an event loop inside another */ +/* the callback gets invoked when the event loop has handled events, and can be 0 */ +typedef struct ev_embed +{ + EV_WATCHER (ev_embed) + + struct ev_loop *other; /* ro */ + ev_io io; /* private */ + ev_prepare prepare; /* private */ + ev_check check; /* unused */ + ev_timer timer; /* unused */ + ev_periodic periodic; /* unused */ + ev_idle idle; /* unused */ + ev_fork fork; /* private */ +#if EV_CLEANUP_ENABLE + ev_cleanup cleanup; /* unused */ +#endif +} ev_embed; +#endif + +#if EV_ASYNC_ENABLE +/* invoked when somebody calls ev_async_send on the watcher */ +/* revent EV_ASYNC */ +typedef struct ev_async +{ + EV_WATCHER (ev_async) + + EV_ATOMIC_T sent; /* private */ +} ev_async; + +# define ev_async_pending(w) (+(w)->sent) +#endif + +/* the presence of this union forces similar struct layout */ +union ev_any_watcher +{ + struct ev_watcher w; + struct ev_watcher_list wl; + + struct ev_io io; + struct ev_timer timer; + struct ev_periodic periodic; + struct ev_signal signal; + struct ev_child child; +#if EV_STAT_ENABLE + struct ev_stat stat; +#endif +#if EV_IDLE_ENABLE + struct ev_idle idle; +#endif + struct ev_prepare prepare; + struct ev_check check; +#if EV_FORK_ENABLE + struct ev_fork fork; +#endif +#if EV_CLEANUP_ENABLE + struct ev_cleanup cleanup; +#endif +#if EV_EMBED_ENABLE + struct ev_embed embed; +#endif +#if EV_ASYNC_ENABLE + struct ev_async async; +#endif +}; + +/* flag bits for ev_default_loop and ev_loop_new */ +enum { + /* the default */ + EVFLAG_AUTO = 0x00000000U, /* not quite a mask */ + /* flag bits */ + EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */ + EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */ + /* debugging/feature disable */ + EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */ +#if EV_COMPAT3 + EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */ +#endif + EVFLAG_SIGNALFD = 0x00200000U, /* attempt to use signalfd */ + EVFLAG_NOSIGMASK = 0x00400000U /* avoid modifying the signal mask */ +}; + +/* method bits to be ored together */ +enum { + EVBACKEND_SELECT = 0x00000001U, /* about anywhere */ + EVBACKEND_POLL = 0x00000002U, /* !win */ + EVBACKEND_EPOLL = 0x00000004U, /* linux */ + EVBACKEND_KQUEUE = 0x00000008U, /* bsd */ + EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 */ /* NYI */ + EVBACKEND_PORT = 0x00000020U, /* solaris 10 */ + EVBACKEND_ALL = 0x0000003FU, /* all known backends */ + EVBACKEND_MASK = 0x0000FFFFU /* all future backends */ +}; + +#if EV_PROTOTYPES +EV_API_DECL int ev_version_major (void) EV_THROW; +EV_API_DECL int ev_version_minor (void) EV_THROW; + +EV_API_DECL unsigned int ev_supported_backends (void) EV_THROW; +EV_API_DECL unsigned int ev_recommended_backends (void) EV_THROW; +EV_API_DECL unsigned int ev_embeddable_backends (void) EV_THROW; + +EV_API_DECL ev_tstamp ev_time (void) EV_THROW; +EV_API_DECL void ev_sleep (ev_tstamp delay) EV_THROW; /* sleep for a while */ + +/* Sets the allocation function to use, works like realloc. + * It is used to allocate and free memory. + * If it returns zero when memory needs to be allocated, the library might abort + * or take some potentially destructive action. + * The default is your system realloc function. + */ +EV_API_DECL void ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW; + +/* set the callback function to call on a + * retryable syscall error + * (such as failed select, poll, epoll_wait) + */ +EV_API_DECL void ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW; + +#if EV_MULTIPLICITY + +/* the default loop is the only one that handles signals and child watchers */ +/* you can call this as often as you like */ +EV_API_DECL struct ev_loop *ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_THROW; + +#ifdef EV_API_STATIC +EV_API_DECL struct ev_loop *ev_default_loop_ptr; +#endif + +EV_INLINE struct ev_loop * +ev_default_loop_uc_ (void) EV_THROW +{ + extern struct ev_loop *ev_default_loop_ptr; + + return ev_default_loop_ptr; +} + +EV_INLINE int +ev_is_default_loop (EV_P) EV_THROW +{ + return EV_A == EV_DEFAULT_UC; +} + +/* create and destroy alternative loops that don't handle signals */ +EV_API_DECL struct ev_loop *ev_loop_new (unsigned int flags EV_CPP (= 0)) EV_THROW; + +EV_API_DECL ev_tstamp ev_now (EV_P) EV_THROW; /* time w.r.t. timers and the eventloop, updated after each poll */ + +#else + +EV_API_DECL int ev_default_loop (unsigned int flags EV_CPP (= 0)) EV_THROW; /* returns true when successful */ + +EV_API_DECL ev_tstamp ev_rt_now; + +EV_INLINE ev_tstamp +ev_now (void) EV_THROW +{ + return ev_rt_now; +} + +/* looks weird, but ev_is_default_loop (EV_A) still works if this exists */ +EV_INLINE int +ev_is_default_loop (void) EV_THROW +{ + return 1; +} + +#endif /* multiplicity */ + +/* destroy event loops, also works for the default loop */ +EV_API_DECL void ev_loop_destroy (EV_P); + +/* this needs to be called after fork, to duplicate the loop */ +/* when you want to re-use it in the child */ +/* you can call it in either the parent or the child */ +/* you can actually call it at any time, anywhere :) */ +EV_API_DECL void ev_loop_fork (EV_P) EV_THROW; + +EV_API_DECL unsigned int ev_backend (EV_P) EV_THROW; /* backend in use by loop */ + +EV_API_DECL void ev_now_update (EV_P) EV_THROW; /* update event loop time */ + +#if EV_WALK_ENABLE +/* walk (almost) all watchers in the loop of a given type, invoking the */ +/* callback on every such watcher. The callback might stop the watcher, */ +/* but do nothing else with the loop */ +EV_API_DECL void ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW; +#endif + +#endif /* prototypes */ + +/* ev_run flags values */ +enum { + EVRUN_NOWAIT = 1, /* do not block/wait */ + EVRUN_ONCE = 2 /* block *once* only */ +}; + +/* ev_break how values */ +enum { + EVBREAK_CANCEL = 0, /* undo unloop */ + EVBREAK_ONE = 1, /* unloop once */ + EVBREAK_ALL = 2 /* unloop all loops */ +}; + +#if EV_PROTOTYPES +EV_API_DECL int ev_run (EV_P_ int flags EV_CPP (= 0)); +EV_API_DECL void ev_break (EV_P_ int how EV_CPP (= EVBREAK_ONE)) EV_THROW; /* break out of the loop */ + +/* + * ref/unref can be used to add or remove a refcount on the mainloop. every watcher + * keeps one reference. if you have a long-running watcher you never unregister that + * should not keep ev_loop from running, unref() after starting, and ref() before stopping. + */ +EV_API_DECL void ev_ref (EV_P) EV_THROW; +EV_API_DECL void ev_unref (EV_P) EV_THROW; + +/* + * convenience function, wait for a single event, without registering an event watcher + * if timeout is < 0, do wait indefinitely + */ +EV_API_DECL void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW; + +# if EV_FEATURE_API +EV_API_DECL unsigned int ev_iteration (EV_P) EV_THROW; /* number of loop iterations */ +EV_API_DECL unsigned int ev_depth (EV_P) EV_THROW; /* #ev_loop enters - #ev_loop leaves */ +EV_API_DECL void ev_verify (EV_P) EV_THROW; /* abort if loop data corrupted */ + +EV_API_DECL void ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW; /* sleep at least this time, default 0 */ +EV_API_DECL void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW; /* sleep at least this time, default 0 */ + +/* advanced stuff for threading etc. support, see docs */ +EV_API_DECL void ev_set_userdata (EV_P_ void *data) EV_THROW; +EV_API_DECL void *ev_userdata (EV_P) EV_THROW; +typedef void (*ev_loop_callback)(EV_P); +EV_API_DECL void ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW; +/* C++ doesn't allow the use of the ev_loop_callback typedef here, so we need to spell it out */ +EV_API_DECL void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW; + +EV_API_DECL unsigned int ev_pending_count (EV_P) EV_THROW; /* number of pending events, if any */ +EV_API_DECL void ev_invoke_pending (EV_P); /* invoke all pending watchers */ + +/* + * stop/start the timer handling. + */ +EV_API_DECL void ev_suspend (EV_P) EV_THROW; +EV_API_DECL void ev_resume (EV_P) EV_THROW; +#endif + +#endif + +/* these may evaluate ev multiple times, and the other arguments at most once */ +/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ +#define ev_init(ev,cb_) do { \ + ((ev_watcher *)(void *)(ev))->active = \ + ((ev_watcher *)(void *)(ev))->pending = 0; \ + ev_set_priority ((ev), 0); \ + ev_set_cb ((ev), cb_); \ +} while (0) + +#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) | EV__IOFDSET; } while (0) +#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0) +#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0) +#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) +#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0) +#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0) +#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0) +#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_cleanup_set(ev) /* nop, yes, this is a serious in-joke */ +#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */ + +#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) +#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) +#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0) +#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) +#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0) +#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0) +#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) +#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) +#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) +#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0) +#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0) +#define ev_cleanup_init(ev,cb) do { ev_init ((ev), (cb)); ev_cleanup_set ((ev)); } while (0) +#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0) + +#define ev_is_pending(ev) (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ +#define ev_is_active(ev) (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ + +#define ev_cb_(ev) (ev)->cb /* rw */ +#define ev_cb(ev) (memmove (&ev_cb_ (ev), &((ev_watcher *)(ev))->cb, sizeof (ev_cb_ (ev))), (ev)->cb) + +#if EV_MINPRI == EV_MAXPRI +# define ev_priority(ev) ((ev), EV_MINPRI) +# define ev_set_priority(ev,pri) ((ev), (pri)) +#else +# define ev_priority(ev) (+(((ev_watcher *)(void *)(ev))->priority)) +# define ev_set_priority(ev,pri) ( (ev_watcher *)(void *)(ev))->priority = (pri) +#endif + +#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at) + +#ifndef ev_set_cb +# define ev_set_cb(ev,cb_) (ev_cb_ (ev) = (cb_), memmove (&((ev_watcher *)(ev))->cb, &ev_cb_ (ev), sizeof (ev_cb_ (ev)))) +#endif + +/* stopping (enabling, adding) a watcher does nothing if it is already running */ +/* stopping (disabling, deleting) a watcher does nothing unless it's already running */ +#if EV_PROTOTYPES + +/* feeds an event into a watcher as if the event actually occurred */ +/* accepts any ev_watcher type */ +EV_API_DECL void ev_feed_event (EV_P_ void *w, int revents) EV_THROW; +EV_API_DECL void ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW; +#if EV_SIGNAL_ENABLE +EV_API_DECL void ev_feed_signal (int signum) EV_THROW; +EV_API_DECL void ev_feed_signal_event (EV_P_ int signum) EV_THROW; +#endif +EV_API_DECL void ev_invoke (EV_P_ void *w, int revents); +EV_API_DECL int ev_clear_pending (EV_P_ void *w) EV_THROW; + +EV_API_DECL void ev_io_start (EV_P_ ev_io *w) EV_THROW; +EV_API_DECL void ev_io_stop (EV_P_ ev_io *w) EV_THROW; + +EV_API_DECL void ev_timer_start (EV_P_ ev_timer *w) EV_THROW; +EV_API_DECL void ev_timer_stop (EV_P_ ev_timer *w) EV_THROW; +/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ +EV_API_DECL void ev_timer_again (EV_P_ ev_timer *w) EV_THROW; +/* return remaining time */ +EV_API_DECL ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW; + +#if EV_PERIODIC_ENABLE +EV_API_DECL void ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW; +EV_API_DECL void ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW; +EV_API_DECL void ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW; +#endif + +/* only supported in the default loop */ +#if EV_SIGNAL_ENABLE +EV_API_DECL void ev_signal_start (EV_P_ ev_signal *w) EV_THROW; +EV_API_DECL void ev_signal_stop (EV_P_ ev_signal *w) EV_THROW; +#endif + +/* only supported in the default loop */ +# if EV_CHILD_ENABLE +EV_API_DECL void ev_child_start (EV_P_ ev_child *w) EV_THROW; +EV_API_DECL void ev_child_stop (EV_P_ ev_child *w) EV_THROW; +# endif + +# if EV_STAT_ENABLE +EV_API_DECL void ev_stat_start (EV_P_ ev_stat *w) EV_THROW; +EV_API_DECL void ev_stat_stop (EV_P_ ev_stat *w) EV_THROW; +EV_API_DECL void ev_stat_stat (EV_P_ ev_stat *w) EV_THROW; +# endif + +# if EV_IDLE_ENABLE +EV_API_DECL void ev_idle_start (EV_P_ ev_idle *w) EV_THROW; +EV_API_DECL void ev_idle_stop (EV_P_ ev_idle *w) EV_THROW; +# endif + +#if EV_PREPARE_ENABLE +EV_API_DECL void ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW; +EV_API_DECL void ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW; +#endif + +#if EV_CHECK_ENABLE +EV_API_DECL void ev_check_start (EV_P_ ev_check *w) EV_THROW; +EV_API_DECL void ev_check_stop (EV_P_ ev_check *w) EV_THROW; +#endif + +# if EV_FORK_ENABLE +EV_API_DECL void ev_fork_start (EV_P_ ev_fork *w) EV_THROW; +EV_API_DECL void ev_fork_stop (EV_P_ ev_fork *w) EV_THROW; +# endif + +# if EV_CLEANUP_ENABLE +EV_API_DECL void ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW; +EV_API_DECL void ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW; +# endif + +# if EV_EMBED_ENABLE +/* only supported when loop to be embedded is in fact embeddable */ +EV_API_DECL void ev_embed_start (EV_P_ ev_embed *w) EV_THROW; +EV_API_DECL void ev_embed_stop (EV_P_ ev_embed *w) EV_THROW; +EV_API_DECL void ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW; +# endif + +# if EV_ASYNC_ENABLE +EV_API_DECL void ev_async_start (EV_P_ ev_async *w) EV_THROW; +EV_API_DECL void ev_async_stop (EV_P_ ev_async *w) EV_THROW; +EV_API_DECL void ev_async_send (EV_P_ ev_async *w) EV_THROW; +# endif + +#if EV_COMPAT3 + #define EVLOOP_NONBLOCK EVRUN_NOWAIT + #define EVLOOP_ONESHOT EVRUN_ONCE + #define EVUNLOOP_CANCEL EVBREAK_CANCEL + #define EVUNLOOP_ONE EVBREAK_ONE + #define EVUNLOOP_ALL EVBREAK_ALL + #if EV_PROTOTYPES + EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); } + EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); } + EV_INLINE void ev_default_destroy (void) { ev_loop_destroy (EV_DEFAULT); } + EV_INLINE void ev_default_fork (void) { ev_loop_fork (EV_DEFAULT); } + #if EV_FEATURE_API + EV_INLINE unsigned int ev_loop_count (EV_P) { return ev_iteration (EV_A); } + EV_INLINE unsigned int ev_loop_depth (EV_P) { return ev_depth (EV_A); } + EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); } + #endif + #endif +#else + typedef struct ev_loop ev_loop; +#endif + +#endif + +EV_CPP(}) + +#endif + diff --git a/framework/src/audit/src/libev/ev_epoll.c b/framework/src/audit/src/libev/ev_epoll.c new file mode 100644 index 00000000..8a9b20f6 --- /dev/null +++ b/framework/src/audit/src/libev/ev_epoll.c @@ -0,0 +1,279 @@ +/* + * libev epoll fd activity backend + * + * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +/* + * general notes about epoll: + * + * a) epoll silently removes fds from the fd set. as nothing tells us + * that an fd has been removed otherwise, we have to continually + * "rearm" fds that we suspect *might* have changed (same + * problem with kqueue, but much less costly there). + * b) the fact that ADD != MOD creates a lot of extra syscalls due to a) + * and seems not to have any advantage. + * c) the inability to handle fork or file descriptors (think dup) + * limits the applicability over poll, so this is not a generic + * poll replacement. + * d) epoll doesn't work the same as select with many file descriptors + * (such as files). while not critical, no other advanced interface + * seems to share this (rather non-unixy) limitation. + * e) epoll claims to be embeddable, but in practise you never get + * a ready event for the epoll fd (broken: <=2.6.26, working: >=2.6.32). + * f) epoll_ctl returning EPERM means the fd is always ready. + * + * lots of "weird code" and complication handling in this file is due + * to these design problems with epoll, as we try very hard to avoid + * epoll_ctl syscalls for common usage patterns and handle the breakage + * ensuing from receiving events for closed and otherwise long gone + * file descriptors. + */ + +#include <sys/epoll.h> + +#define EV_EMASK_EPERM 0x80 + +static void +epoll_modify (EV_P_ int fd, int oev, int nev) +{ + struct epoll_event ev; + unsigned char oldmask; + + /* + * we handle EPOLL_CTL_DEL by ignoring it here + * on the assumption that the fd is gone anyways + * if that is wrong, we have to handle the spurious + * event in epoll_poll. + * if the fd is added again, we try to ADD it, and, if that + * fails, we assume it still has the same eventmask. + */ + if (!nev) + return; + + oldmask = anfds [fd].emask; + anfds [fd].emask = nev; + + /* store the generation counter in the upper 32 bits, the fd in the lower 32 bits */ + ev.data.u64 = (uint64_t)(uint32_t)fd + | ((uint64_t)(uint32_t)++anfds [fd].egen << 32); + ev.events = (nev & EV_READ ? EPOLLIN : 0) + | (nev & EV_WRITE ? EPOLLOUT : 0); + + if (expect_true (!epoll_ctl (backend_fd, oev && oldmask != nev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD, fd, &ev))) + return; + + if (expect_true (errno == ENOENT)) + { + /* if ENOENT then the fd went away, so try to do the right thing */ + if (!epoll_ctl (backend_fd, EPOLL_CTL_ADD, fd, &ev)) + return; + } + else if (expect_true (errno == EEXIST)) + { + /* EEXIST means we ignored a previous DEL, but the fd is still active */ + /* if the kernel mask is the same as the new mask, we assume it hasn't changed */ + if (oldmask == nev) + goto dec_egen; + + if (!epoll_ctl (backend_fd, EPOLL_CTL_MOD, fd, &ev)) + return; + } + else if (expect_true (errno == EPERM)) + { + /* EPERM means the fd is always ready, but epoll is too snobbish */ + /* to handle it, unlike select or poll. */ + anfds [fd].emask = EV_EMASK_EPERM; + + /* add fd to epoll_eperms, if not already inside */ + if (!(oldmask & EV_EMASK_EPERM)) + { + array_needsize (int, epoll_eperms, epoll_epermmax, epoll_epermcnt + 1, EMPTY2); + epoll_eperms [epoll_epermcnt++] = fd; + } + + return; + } + + fd_kill (EV_A_ fd); + +dec_egen: + /* we didn't successfully call epoll_ctl, so decrement the generation counter again */ + --anfds [fd].egen; +} + +static void +epoll_poll (EV_P_ ev_tstamp timeout) +{ + int i; + int eventcnt; + + if (expect_false (epoll_epermcnt)) + timeout = 0.; + + /* epoll wait times cannot be larger than (LONG_MAX - 999UL) / HZ msecs, which is below */ + /* the default libev max wait time, however. */ + EV_RELEASE_CB; + eventcnt = epoll_wait (backend_fd, epoll_events, epoll_eventmax, timeout * 1e3); + EV_ACQUIRE_CB; + + if (expect_false (eventcnt < 0)) + { + if (errno != EINTR) + ev_syserr ("(libev) epoll_wait"); + + return; + } + + for (i = 0; i < eventcnt; ++i) + { + struct epoll_event *ev = epoll_events + i; + + int fd = (uint32_t)ev->data.u64; /* mask out the lower 32 bits */ + int want = anfds [fd].events; + int got = (ev->events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0) + | (ev->events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0); + + /* + * check for spurious notification. + * this only finds spurious notifications on egen updates + * other spurious notifications will be found by epoll_ctl, below + * we assume that fd is always in range, as we never shrink the anfds array + */ + if (expect_false ((uint32_t)anfds [fd].egen != (uint32_t)(ev->data.u64 >> 32))) + { + /* recreate kernel state */ + postfork = 1; + continue; + } + + if (expect_false (got & ~want)) + { + anfds [fd].emask = want; + + /* + * we received an event but are not interested in it, try mod or del + * this often happens because we optimistically do not unregister fds + * when we are no longer interested in them, but also when we get spurious + * notifications for fds from another process. this is partially handled + * above with the gencounter check (== our fd is not the event fd), and + * partially here, when epoll_ctl returns an error (== a child has the fd + * but we closed it). + */ + ev->events = (want & EV_READ ? EPOLLIN : 0) + | (want & EV_WRITE ? EPOLLOUT : 0); + + /* pre-2.6.9 kernels require a non-null pointer with EPOLL_CTL_DEL, */ + /* which is fortunately easy to do for us. */ + if (epoll_ctl (backend_fd, want ? EPOLL_CTL_MOD : EPOLL_CTL_DEL, fd, ev)) + { + postfork = 1; /* an error occurred, recreate kernel state */ + continue; + } + } + + fd_event (EV_A_ fd, got); + } + + /* if the receive array was full, increase its size */ + if (expect_false (eventcnt == epoll_eventmax)) + { + ev_free (epoll_events); + epoll_eventmax = array_nextsize (sizeof (struct epoll_event), epoll_eventmax, epoll_eventmax + 1); + epoll_events = (struct epoll_event *)ev_malloc (sizeof (struct epoll_event) * epoll_eventmax); + } + + /* now synthesize events for all fds where epoll fails, while select works... */ + for (i = epoll_epermcnt; i--; ) + { + int fd = epoll_eperms [i]; + unsigned char events = anfds [fd].events & (EV_READ | EV_WRITE); + + if (anfds [fd].emask & EV_EMASK_EPERM && events) + fd_event (EV_A_ fd, events); + else + { + epoll_eperms [i] = epoll_eperms [--epoll_epermcnt]; + anfds [fd].emask = 0; + } + } +} + +int inline_size +epoll_init (EV_P_ int flags) +{ +#ifdef EPOLL_CLOEXEC + backend_fd = epoll_create1 (EPOLL_CLOEXEC); + + if (backend_fd < 0 && (errno == EINVAL || errno == ENOSYS)) +#endif + backend_fd = epoll_create (256); + + if (backend_fd < 0) + return 0; + + fcntl (backend_fd, F_SETFD, FD_CLOEXEC); + + backend_mintime = 1e-3; /* epoll does sometimes return early, this is just to avoid the worst */ + backend_modify = epoll_modify; + backend_poll = epoll_poll; + + epoll_eventmax = 64; /* initial number of events receivable per poll */ + epoll_events = (struct epoll_event *)ev_malloc (sizeof (struct epoll_event) * epoll_eventmax); + + return EVBACKEND_EPOLL; +} + +void inline_size +epoll_destroy (EV_P) +{ + ev_free (epoll_events); + array_free (epoll_eperm, EMPTY); +} + +void inline_size +epoll_fork (EV_P) +{ + close (backend_fd); + + while ((backend_fd = epoll_create (256)) < 0) + ev_syserr ("(libev) epoll_create"); + + fcntl (backend_fd, F_SETFD, FD_CLOEXEC); + + fd_rearm_all (EV_A); +} + diff --git a/framework/src/audit/src/libev/ev_poll.c b/framework/src/audit/src/libev/ev_poll.c new file mode 100644 index 00000000..48323516 --- /dev/null +++ b/framework/src/audit/src/libev/ev_poll.c @@ -0,0 +1,148 @@ +/* + * libev poll fd activity backend + * + * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +#include <poll.h> + +void inline_size +pollidx_init (int *base, int count) +{ + /* consider using memset (.., -1, ...), which is practically guaranteed + * to work on all systems implementing poll */ + while (count--) + *base++ = -1; +} + +static void +poll_modify (EV_P_ int fd, int oev, int nev) +{ + int idx; + + if (oev == nev) + return; + + array_needsize (int, pollidxs, pollidxmax, fd + 1, pollidx_init); + + idx = pollidxs [fd]; + + if (idx < 0) /* need to allocate a new pollfd */ + { + pollidxs [fd] = idx = pollcnt++; + array_needsize (struct pollfd, polls, pollmax, pollcnt, EMPTY2); + polls [idx].fd = fd; + } + + assert (polls [idx].fd == fd); + + if (nev) + polls [idx].events = + (nev & EV_READ ? POLLIN : 0) + | (nev & EV_WRITE ? POLLOUT : 0); + else /* remove pollfd */ + { + pollidxs [fd] = -1; + + if (expect_true (idx < --pollcnt)) + { + polls [idx] = polls [pollcnt]; + pollidxs [polls [idx].fd] = idx; + } + } +} + +static void +poll_poll (EV_P_ ev_tstamp timeout) +{ + struct pollfd *p; + int res; + + EV_RELEASE_CB; + res = poll (polls, pollcnt, timeout * 1e3); + EV_ACQUIRE_CB; + + if (expect_false (res < 0)) + { + if (errno == EBADF) + fd_ebadf (EV_A); + else if (errno == ENOMEM && !syserr_cb) + fd_enomem (EV_A); + else if (errno != EINTR) + ev_syserr ("(libev) poll"); + } + else + for (p = polls; res; ++p) + { + assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt)); + + if (expect_false (p->revents)) /* this expect is debatable */ + { + --res; + + if (expect_false (p->revents & POLLNVAL)) + fd_kill (EV_A_ p->fd); + else + fd_event ( + EV_A_ + p->fd, + (p->revents & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0) + | (p->revents & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0) + ); + } + } +} + +int inline_size +poll_init (EV_P_ int flags) +{ + backend_mintime = 1e-3; + backend_modify = poll_modify; + backend_poll = poll_poll; + + pollidxs = 0; pollidxmax = 0; + polls = 0; pollmax = 0; pollcnt = 0; + + return EVBACKEND_POLL; +} + +void inline_size +poll_destroy (EV_P) +{ + ev_free (pollidxs); + ev_free (polls); +} + diff --git a/framework/src/audit/src/libev/ev_select.c b/framework/src/audit/src/libev/ev_select.c new file mode 100644 index 00000000..f38d6ca3 --- /dev/null +++ b/framework/src/audit/src/libev/ev_select.c @@ -0,0 +1,314 @@ +/* + * libev select fd activity backend + * + * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +#ifndef _WIN32 +/* for unix systems */ +# include <inttypes.h> +# ifndef __hpux +/* for REAL unix systems */ +# include <sys/select.h> +# endif +#endif + +#ifndef EV_SELECT_USE_FD_SET +# ifdef NFDBITS +# define EV_SELECT_USE_FD_SET 0 +# else +# define EV_SELECT_USE_FD_SET 1 +# endif +#endif + +#if EV_SELECT_IS_WINSOCKET +# undef EV_SELECT_USE_FD_SET +# define EV_SELECT_USE_FD_SET 1 +# undef NFDBITS +# define NFDBITS 0 +#endif + +#if !EV_SELECT_USE_FD_SET +# define NFDBYTES (NFDBITS / 8) +#endif + +#include <string.h> + +static void +select_modify (EV_P_ int fd, int oev, int nev) +{ + if (oev == nev) + return; + + { +#if EV_SELECT_USE_FD_SET + + #if EV_SELECT_IS_WINSOCKET + SOCKET handle = anfds [fd].handle; + #else + int handle = fd; + #endif + + assert (("libev: fd >= FD_SETSIZE passed to fd_set-based select backend", fd < FD_SETSIZE)); + + /* FD_SET is broken on windows (it adds the fd to a set twice or more, + * which eventually leads to overflows). Need to call it only on changes. + */ + #if EV_SELECT_IS_WINSOCKET + if ((oev ^ nev) & EV_READ) + #endif + if (nev & EV_READ) + FD_SET (handle, (fd_set *)vec_ri); + else + FD_CLR (handle, (fd_set *)vec_ri); + + #if EV_SELECT_IS_WINSOCKET + if ((oev ^ nev) & EV_WRITE) + #endif + if (nev & EV_WRITE) + FD_SET (handle, (fd_set *)vec_wi); + else + FD_CLR (handle, (fd_set *)vec_wi); + +#else + + int word = fd / NFDBITS; + fd_mask mask = 1UL << (fd % NFDBITS); + + if (expect_false (vec_max <= word)) + { + int new_max = word + 1; + + vec_ri = ev_realloc (vec_ri, new_max * NFDBYTES); + vec_ro = ev_realloc (vec_ro, new_max * NFDBYTES); /* could free/malloc */ + vec_wi = ev_realloc (vec_wi, new_max * NFDBYTES); + vec_wo = ev_realloc (vec_wo, new_max * NFDBYTES); /* could free/malloc */ + #ifdef _WIN32 + vec_eo = ev_realloc (vec_eo, new_max * NFDBYTES); /* could free/malloc */ + #endif + + for (; vec_max < new_max; ++vec_max) + ((fd_mask *)vec_ri) [vec_max] = + ((fd_mask *)vec_wi) [vec_max] = 0; + } + + ((fd_mask *)vec_ri) [word] |= mask; + if (!(nev & EV_READ)) + ((fd_mask *)vec_ri) [word] &= ~mask; + + ((fd_mask *)vec_wi) [word] |= mask; + if (!(nev & EV_WRITE)) + ((fd_mask *)vec_wi) [word] &= ~mask; +#endif + } +} + +static void +select_poll (EV_P_ ev_tstamp timeout) +{ + struct timeval tv; + int res; + int fd_setsize; + + EV_RELEASE_CB; + EV_TV_SET (tv, timeout); + +#if EV_SELECT_USE_FD_SET + fd_setsize = sizeof (fd_set); +#else + fd_setsize = vec_max * NFDBYTES; +#endif + + memcpy (vec_ro, vec_ri, fd_setsize); + memcpy (vec_wo, vec_wi, fd_setsize); + +#ifdef _WIN32 + /* pass in the write set as except set. + * the idea behind this is to work around a windows bug that causes + * errors to be reported as an exception and not by setting + * the writable bit. this is so uncontrollably lame. + */ + memcpy (vec_eo, vec_wi, fd_setsize); + res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, (fd_set *)vec_eo, &tv); +#elif EV_SELECT_USE_FD_SET + fd_setsize = anfdmax < FD_SETSIZE ? anfdmax : FD_SETSIZE; + res = select (fd_setsize, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv); +#else + res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv); +#endif + EV_ACQUIRE_CB; + + if (expect_false (res < 0)) + { + #if EV_SELECT_IS_WINSOCKET + errno = WSAGetLastError (); + #endif + #ifdef WSABASEERR + /* on windows, select returns incompatible error codes, fix this */ + if (errno >= WSABASEERR && errno < WSABASEERR + 1000) + if (errno == WSAENOTSOCK) + errno = EBADF; + else + errno -= WSABASEERR; + #endif + + #ifdef _WIN32 + /* select on windows erroneously returns EINVAL when no fd sets have been + * provided (this is documented). what microsoft doesn't tell you that this bug + * exists even when the fd sets _are_ provided, so we have to check for this bug + * here and emulate by sleeping manually. + * we also get EINVAL when the timeout is invalid, but we ignore this case here + * and assume that EINVAL always means: you have to wait manually. + */ + if (errno == EINVAL) + { + if (timeout) + { + unsigned long ms = timeout * 1e3; + Sleep (ms ? ms : 1); + } + + return; + } + #endif + + if (errno == EBADF) + fd_ebadf (EV_A); + else if (errno == ENOMEM && !syserr_cb) + fd_enomem (EV_A); + else if (errno != EINTR) + ev_syserr ("(libev) select"); + + return; + } + +#if EV_SELECT_USE_FD_SET + + { + int fd; + + for (fd = 0; fd < anfdmax; ++fd) + if (anfds [fd].events) + { + int events = 0; + #if EV_SELECT_IS_WINSOCKET + SOCKET handle = anfds [fd].handle; + #else + int handle = fd; + #endif + + if (FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ; + if (FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE; + #ifdef _WIN32 + if (FD_ISSET (handle, (fd_set *)vec_eo)) events |= EV_WRITE; + #endif + + if (expect_true (events)) + fd_event (EV_A_ fd, events); + } + } + +#else + + { + int word, bit; + for (word = vec_max; word--; ) + { + fd_mask word_r = ((fd_mask *)vec_ro) [word]; + fd_mask word_w = ((fd_mask *)vec_wo) [word]; + #ifdef _WIN32 + word_w |= ((fd_mask *)vec_eo) [word]; + #endif + + if (word_r || word_w) + for (bit = NFDBITS; bit--; ) + { + fd_mask mask = 1UL << bit; + int events = 0; + + events |= word_r & mask ? EV_READ : 0; + events |= word_w & mask ? EV_WRITE : 0; + + if (expect_true (events)) + fd_event (EV_A_ word * NFDBITS + bit, events); + } + } + } + +#endif +} + +int inline_size +select_init (EV_P_ int flags) +{ + backend_mintime = 1e-6; + backend_modify = select_modify; + backend_poll = select_poll; + +#if EV_SELECT_USE_FD_SET + vec_ri = ev_malloc (sizeof (fd_set)); FD_ZERO ((fd_set *)vec_ri); + vec_ro = ev_malloc (sizeof (fd_set)); + vec_wi = ev_malloc (sizeof (fd_set)); FD_ZERO ((fd_set *)vec_wi); + vec_wo = ev_malloc (sizeof (fd_set)); + #ifdef _WIN32 + vec_eo = ev_malloc (sizeof (fd_set)); + #endif +#else + vec_max = 0; + vec_ri = 0; + vec_ro = 0; + vec_wi = 0; + vec_wo = 0; + #ifdef _WIN32 + vec_eo = 0; + #endif +#endif + + return EVBACKEND_SELECT; +} + +void inline_size +select_destroy (EV_P) +{ + ev_free (vec_ri); + ev_free (vec_ro); + ev_free (vec_wi); + ev_free (vec_wo); + #ifdef _WIN32 + ev_free (vec_eo); + #endif +} + diff --git a/framework/src/audit/src/libev/ev_vars.h b/framework/src/audit/src/libev/ev_vars.h new file mode 100644 index 00000000..04d4db16 --- /dev/null +++ b/framework/src/audit/src/libev/ev_vars.h @@ -0,0 +1,204 @@ +/* + * loop member variable declarations + * + * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +#define VARx(type,name) VAR(name, type name) + +VARx(ev_tstamp, now_floor) /* last time we refreshed rt_time */ +VARx(ev_tstamp, mn_now) /* monotonic clock "now" */ +VARx(ev_tstamp, rtmn_diff) /* difference realtime - monotonic time */ + +/* for reverse feeding of events */ +VARx(W *, rfeeds) +VARx(int, rfeedmax) +VARx(int, rfeedcnt) + +VAR (pendings, ANPENDING *pendings [NUMPRI]) +VAR (pendingmax, int pendingmax [NUMPRI]) +VAR (pendingcnt, int pendingcnt [NUMPRI]) +VARx(int, pendingpri) /* highest priority currently pending */ +VARx(ev_prepare, pending_w) /* dummy pending watcher */ + +VARx(ev_tstamp, io_blocktime) +VARx(ev_tstamp, timeout_blocktime) + +VARx(int, backend) +VARx(int, activecnt) /* total number of active events ("refcount") */ +VARx(EV_ATOMIC_T, loop_done) /* signal by ev_break */ + +VARx(int, backend_fd) +VARx(ev_tstamp, backend_mintime) /* assumed typical timer resolution */ +VAR (backend_modify, void (*backend_modify)(EV_P_ int fd, int oev, int nev)) +VAR (backend_poll , void (*backend_poll)(EV_P_ ev_tstamp timeout)) + +VARx(ANFD *, anfds) +VARx(int, anfdmax) + +VAR (evpipe, int evpipe [2]) +VARx(ev_io, pipe_w) +VARx(EV_ATOMIC_T, pipe_write_wanted) +VARx(EV_ATOMIC_T, pipe_write_skipped) + +#if !defined(_WIN32) || EV_GENWRAP +VARx(pid_t, curpid) +#endif + +VARx(char, postfork) /* true if we need to recreate kernel state after fork */ + +#if EV_USE_SELECT || EV_GENWRAP +VARx(void *, vec_ri) +VARx(void *, vec_ro) +VARx(void *, vec_wi) +VARx(void *, vec_wo) +#if defined(_WIN32) || EV_GENWRAP +VARx(void *, vec_eo) +#endif +VARx(int, vec_max) +#endif + +#if EV_USE_POLL || EV_GENWRAP +VARx(struct pollfd *, polls) +VARx(int, pollmax) +VARx(int, pollcnt) +VARx(int *, pollidxs) /* maps fds into structure indices */ +VARx(int, pollidxmax) +#endif + +#if EV_USE_EPOLL || EV_GENWRAP +VARx(struct epoll_event *, epoll_events) +VARx(int, epoll_eventmax) +VARx(int *, epoll_eperms) +VARx(int, epoll_epermcnt) +VARx(int, epoll_epermmax) +#endif + +#if EV_USE_KQUEUE || EV_GENWRAP +VARx(pid_t, kqueue_fd_pid) +VARx(struct kevent *, kqueue_changes) +VARx(int, kqueue_changemax) +VARx(int, kqueue_changecnt) +VARx(struct kevent *, kqueue_events) +VARx(int, kqueue_eventmax) +#endif + +#if EV_USE_PORT || EV_GENWRAP +VARx(struct port_event *, port_events) +VARx(int, port_eventmax) +#endif + +#if EV_USE_IOCP || EV_GENWRAP +VARx(HANDLE, iocp) +#endif + +VARx(int *, fdchanges) +VARx(int, fdchangemax) +VARx(int, fdchangecnt) + +VARx(ANHE *, timers) +VARx(int, timermax) +VARx(int, timercnt) + +#if EV_PERIODIC_ENABLE || EV_GENWRAP +VARx(ANHE *, periodics) +VARx(int, periodicmax) +VARx(int, periodiccnt) +#endif + +#if EV_IDLE_ENABLE || EV_GENWRAP +VAR (idles, ev_idle **idles [NUMPRI]) +VAR (idlemax, int idlemax [NUMPRI]) +VAR (idlecnt, int idlecnt [NUMPRI]) +#endif +VARx(int, idleall) /* total number */ + +VARx(struct ev_prepare **, prepares) +VARx(int, preparemax) +VARx(int, preparecnt) + +VARx(struct ev_check **, checks) +VARx(int, checkmax) +VARx(int, checkcnt) + +#if EV_FORK_ENABLE || EV_GENWRAP +VARx(struct ev_fork **, forks) +VARx(int, forkmax) +VARx(int, forkcnt) +#endif + +#if EV_CLEANUP_ENABLE || EV_GENWRAP +VARx(struct ev_cleanup **, cleanups) +VARx(int, cleanupmax) +VARx(int, cleanupcnt) +#endif + +#if EV_ASYNC_ENABLE || EV_GENWRAP +VARx(EV_ATOMIC_T, async_pending) +VARx(struct ev_async **, asyncs) +VARx(int, asyncmax) +VARx(int, asynccnt) +#endif + +#if EV_USE_INOTIFY || EV_GENWRAP +VARx(int, fs_fd) +VARx(ev_io, fs_w) +VARx(char, fs_2625) /* whether we are running in linux 2.6.25 or newer */ +VAR (fs_hash, ANFS fs_hash [EV_INOTIFY_HASHSIZE]) +#endif + +VARx(EV_ATOMIC_T, sig_pending) +#if EV_USE_SIGNALFD || EV_GENWRAP +VARx(int, sigfd) +VARx(ev_io, sigfd_w) +VARx(sigset_t, sigfd_set) +#endif + +VARx(unsigned int, origflags) /* original loop flags */ + +#if EV_FEATURE_API || EV_GENWRAP +VARx(unsigned int, loop_count) /* total number of loop iterations/blocks */ +VARx(unsigned int, loop_depth) /* #ev_run enters - #ev_run leaves */ + +VARx(void *, userdata) +/* C++ doesn't support the ev_loop_callback typedef here. stinks. */ +VAR (release_cb, void (*release_cb)(EV_P) EV_THROW) +VAR (acquire_cb, void (*acquire_cb)(EV_P) EV_THROW) +VAR (invoke_cb , ev_loop_callback invoke_cb) +#endif + +#undef VARx + diff --git a/framework/src/audit/src/libev/ev_wrap.h b/framework/src/audit/src/libev/ev_wrap.h new file mode 100644 index 00000000..ad989ea7 --- /dev/null +++ b/framework/src/audit/src/libev/ev_wrap.h @@ -0,0 +1,200 @@ +/* DO NOT EDIT, automatically generated by update_ev_wrap */ +#ifndef EV_WRAP_H +#define EV_WRAP_H +#define acquire_cb ((loop)->acquire_cb) +#define activecnt ((loop)->activecnt) +#define anfdmax ((loop)->anfdmax) +#define anfds ((loop)->anfds) +#define async_pending ((loop)->async_pending) +#define asynccnt ((loop)->asynccnt) +#define asyncmax ((loop)->asyncmax) +#define asyncs ((loop)->asyncs) +#define backend ((loop)->backend) +#define backend_fd ((loop)->backend_fd) +#define backend_mintime ((loop)->backend_mintime) +#define backend_modify ((loop)->backend_modify) +#define backend_poll ((loop)->backend_poll) +#define checkcnt ((loop)->checkcnt) +#define checkmax ((loop)->checkmax) +#define checks ((loop)->checks) +#define cleanupcnt ((loop)->cleanupcnt) +#define cleanupmax ((loop)->cleanupmax) +#define cleanups ((loop)->cleanups) +#define curpid ((loop)->curpid) +#define epoll_epermcnt ((loop)->epoll_epermcnt) +#define epoll_epermmax ((loop)->epoll_epermmax) +#define epoll_eperms ((loop)->epoll_eperms) +#define epoll_eventmax ((loop)->epoll_eventmax) +#define epoll_events ((loop)->epoll_events) +#define evpipe ((loop)->evpipe) +#define fdchangecnt ((loop)->fdchangecnt) +#define fdchangemax ((loop)->fdchangemax) +#define fdchanges ((loop)->fdchanges) +#define forkcnt ((loop)->forkcnt) +#define forkmax ((loop)->forkmax) +#define forks ((loop)->forks) +#define fs_2625 ((loop)->fs_2625) +#define fs_fd ((loop)->fs_fd) +#define fs_hash ((loop)->fs_hash) +#define fs_w ((loop)->fs_w) +#define idleall ((loop)->idleall) +#define idlecnt ((loop)->idlecnt) +#define idlemax ((loop)->idlemax) +#define idles ((loop)->idles) +#define invoke_cb ((loop)->invoke_cb) +#define io_blocktime ((loop)->io_blocktime) +#define iocp ((loop)->iocp) +#define kqueue_changecnt ((loop)->kqueue_changecnt) +#define kqueue_changemax ((loop)->kqueue_changemax) +#define kqueue_changes ((loop)->kqueue_changes) +#define kqueue_eventmax ((loop)->kqueue_eventmax) +#define kqueue_events ((loop)->kqueue_events) +#define kqueue_fd_pid ((loop)->kqueue_fd_pid) +#define loop_count ((loop)->loop_count) +#define loop_depth ((loop)->loop_depth) +#define loop_done ((loop)->loop_done) +#define mn_now ((loop)->mn_now) +#define now_floor ((loop)->now_floor) +#define origflags ((loop)->origflags) +#define pending_w ((loop)->pending_w) +#define pendingcnt ((loop)->pendingcnt) +#define pendingmax ((loop)->pendingmax) +#define pendingpri ((loop)->pendingpri) +#define pendings ((loop)->pendings) +#define periodiccnt ((loop)->periodiccnt) +#define periodicmax ((loop)->periodicmax) +#define periodics ((loop)->periodics) +#define pipe_w ((loop)->pipe_w) +#define pipe_write_skipped ((loop)->pipe_write_skipped) +#define pipe_write_wanted ((loop)->pipe_write_wanted) +#define pollcnt ((loop)->pollcnt) +#define pollidxmax ((loop)->pollidxmax) +#define pollidxs ((loop)->pollidxs) +#define pollmax ((loop)->pollmax) +#define polls ((loop)->polls) +#define port_eventmax ((loop)->port_eventmax) +#define port_events ((loop)->port_events) +#define postfork ((loop)->postfork) +#define preparecnt ((loop)->preparecnt) +#define preparemax ((loop)->preparemax) +#define prepares ((loop)->prepares) +#define release_cb ((loop)->release_cb) +#define rfeedcnt ((loop)->rfeedcnt) +#define rfeedmax ((loop)->rfeedmax) +#define rfeeds ((loop)->rfeeds) +#define rtmn_diff ((loop)->rtmn_diff) +#define sig_pending ((loop)->sig_pending) +#define sigfd ((loop)->sigfd) +#define sigfd_set ((loop)->sigfd_set) +#define sigfd_w ((loop)->sigfd_w) +#define timeout_blocktime ((loop)->timeout_blocktime) +#define timercnt ((loop)->timercnt) +#define timermax ((loop)->timermax) +#define timers ((loop)->timers) +#define userdata ((loop)->userdata) +#define vec_eo ((loop)->vec_eo) +#define vec_max ((loop)->vec_max) +#define vec_ri ((loop)->vec_ri) +#define vec_ro ((loop)->vec_ro) +#define vec_wi ((loop)->vec_wi) +#define vec_wo ((loop)->vec_wo) +#else +#undef EV_WRAP_H +#undef acquire_cb +#undef activecnt +#undef anfdmax +#undef anfds +#undef async_pending +#undef asynccnt +#undef asyncmax +#undef asyncs +#undef backend +#undef backend_fd +#undef backend_mintime +#undef backend_modify +#undef backend_poll +#undef checkcnt +#undef checkmax +#undef checks +#undef cleanupcnt +#undef cleanupmax +#undef cleanups +#undef curpid +#undef epoll_epermcnt +#undef epoll_epermmax +#undef epoll_eperms +#undef epoll_eventmax +#undef epoll_events +#undef evpipe +#undef fdchangecnt +#undef fdchangemax +#undef fdchanges +#undef forkcnt +#undef forkmax +#undef forks +#undef fs_2625 +#undef fs_fd +#undef fs_hash +#undef fs_w +#undef idleall +#undef idlecnt +#undef idlemax +#undef idles +#undef invoke_cb +#undef io_blocktime +#undef iocp +#undef kqueue_changecnt +#undef kqueue_changemax +#undef kqueue_changes +#undef kqueue_eventmax +#undef kqueue_events +#undef kqueue_fd_pid +#undef loop_count +#undef loop_depth +#undef loop_done +#undef mn_now +#undef now_floor +#undef origflags +#undef pending_w +#undef pendingcnt +#undef pendingmax +#undef pendingpri +#undef pendings +#undef periodiccnt +#undef periodicmax +#undef periodics +#undef pipe_w +#undef pipe_write_skipped +#undef pipe_write_wanted +#undef pollcnt +#undef pollidxmax +#undef pollidxs +#undef pollmax +#undef polls +#undef port_eventmax +#undef port_events +#undef postfork +#undef preparecnt +#undef preparemax +#undef prepares +#undef release_cb +#undef rfeedcnt +#undef rfeedmax +#undef rfeeds +#undef rtmn_diff +#undef sig_pending +#undef sigfd +#undef sigfd_set +#undef sigfd_w +#undef timeout_blocktime +#undef timercnt +#undef timermax +#undef timers +#undef userdata +#undef vec_eo +#undef vec_max +#undef vec_ri +#undef vec_ro +#undef vec_wi +#undef vec_wo +#endif diff --git a/framework/src/audit/src/libev/event.c b/framework/src/audit/src/libev/event.c new file mode 100644 index 00000000..5586cd35 --- /dev/null +++ b/framework/src/audit/src/libev/event.c @@ -0,0 +1,425 @@ +/* + * libevent compatibility layer + * + * Copyright (c) 2007,2008,2009,2010,2012 Marc Alexander Lehmann <libev@schmorp.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +#include <stddef.h> +#include <stdlib.h> +#include <assert.h> + +#ifdef EV_EVENT_H +# include EV_EVENT_H +#else +# include "event.h" +#endif + +#if EV_MULTIPLICITY +# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base +# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base +#else +# define dLOOPev +# define dLOOPbase +#endif + +/* never accessed, will always be cast from/to ev_loop */ +struct event_base +{ + int dummy; +}; + +static struct event_base *ev_x_cur; + +static ev_tstamp +ev_tv_get (struct timeval *tv) +{ + if (tv) + { + ev_tstamp after = tv->tv_sec + tv->tv_usec * 1e-6; + return after ? after : 1e-6; + } + else + return -1.; +} + +#define EVENT_STRINGIFY(s) # s +#define EVENT_VERSION(a,b) EVENT_STRINGIFY (a) "." EVENT_STRINGIFY (b) + +const char * +event_get_version (void) +{ + /* returns ABI, not API or library, version */ + return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR); +} + +const char * +event_get_method (void) +{ + return "libev"; +} + +void *event_init (void) +{ +#if EV_MULTIPLICITY + if (ev_x_cur) + ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO); + else + ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO); +#else + assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur)); + + ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO); +#endif + + return ev_x_cur; +} + +const char * +event_base_get_method (const struct event_base *base) +{ + return "libev"; +} + +struct event_base * +event_base_new (void) +{ +#if EV_MULTIPLICITY + return (struct event_base *)ev_loop_new (EVFLAG_AUTO); +#else + assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY")); + return NULL; +#endif +} + +void event_base_free (struct event_base *base) +{ + dLOOPbase; + +#if EV_MULTIPLICITY + if (!ev_is_default_loop (loop)) + ev_loop_destroy (loop); +#endif +} + +int event_dispatch (void) +{ + return event_base_dispatch (ev_x_cur); +} + +#ifdef EV_STANDALONE +void event_set_log_callback (event_log_cb cb) +{ + /* nop */ +} +#endif + +int event_loop (int flags) +{ + return event_base_loop (ev_x_cur, flags); +} + +int event_loopexit (struct timeval *tv) +{ + return event_base_loopexit (ev_x_cur, tv); +} + +event_callback_fn event_get_callback +(const struct event *ev) +{ + return ev->ev_callback; +} + +static void +ev_x_cb (struct event *ev, int revents) +{ + revents &= EV_READ | EV_WRITE | EV_TIMER | EV_SIGNAL; + + ev->ev_res = revents; + ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg); +} + +static void +ev_x_cb_sig (EV_P_ struct ev_signal *w, int revents) +{ + struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig)); + + if (revents & EV_ERROR) + event_del (ev); + + ev_x_cb (ev, revents); +} + +static void +ev_x_cb_io (EV_P_ struct ev_io *w, int revents) +{ + struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io)); + + if ((revents & EV_ERROR) || !(ev->ev_events & EV_PERSIST)) + event_del (ev); + + ev_x_cb (ev, revents); +} + +static void +ev_x_cb_to (EV_P_ struct ev_timer *w, int revents) +{ + struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to)); + + event_del (ev); + + ev_x_cb (ev, revents); +} + +void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg) +{ + if (events & EV_SIGNAL) + ev_init (&ev->iosig.sig, ev_x_cb_sig); + else + ev_init (&ev->iosig.io, ev_x_cb_io); + + ev_init (&ev->to, ev_x_cb_to); + + ev->ev_base = ev_x_cur; /* not threadsafe, but it's how libevent works */ + ev->ev_fd = fd; + ev->ev_events = events; + ev->ev_pri = 0; + ev->ev_callback = cb; + ev->ev_arg = arg; + ev->ev_res = 0; + ev->ev_flags = EVLIST_INIT; +} + +int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) +{ + return event_base_once (ev_x_cur, fd, events, cb, arg, tv); +} + +int event_add (struct event *ev, struct timeval *tv) +{ + dLOOPev; + + if (ev->ev_events & EV_SIGNAL) + { + if (!ev_is_active (&ev->iosig.sig)) + { + ev_signal_set (&ev->iosig.sig, ev->ev_fd); + ev_signal_start (EV_A_ &ev->iosig.sig); + + ev->ev_flags |= EVLIST_SIGNAL; + } + } + else if (ev->ev_events & (EV_READ | EV_WRITE)) + { + if (!ev_is_active (&ev->iosig.io)) + { + ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); + ev_io_start (EV_A_ &ev->iosig.io); + + ev->ev_flags |= EVLIST_INSERTED; + } + } + + if (tv) + { + ev->to.repeat = ev_tv_get (tv); + ev_timer_again (EV_A_ &ev->to); + ev->ev_flags |= EVLIST_TIMEOUT; + } + else + { + ev_timer_stop (EV_A_ &ev->to); + ev->ev_flags &= ~EVLIST_TIMEOUT; + } + + ev->ev_flags |= EVLIST_ACTIVE; + + return 0; +} + +int event_del (struct event *ev) +{ + dLOOPev; + + if (ev->ev_events & EV_SIGNAL) + ev_signal_stop (EV_A_ &ev->iosig.sig); + else if (ev->ev_events & (EV_READ | EV_WRITE)) + ev_io_stop (EV_A_ &ev->iosig.io); + + if (ev_is_active (&ev->to)) + ev_timer_stop (EV_A_ &ev->to); + + ev->ev_flags = EVLIST_INIT; + + return 0; +} + +void event_active (struct event *ev, int res, short ncalls) +{ + dLOOPev; + + if (res & EV_TIMEOUT) + ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT); + + if (res & EV_SIGNAL) + ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL); + + if (res & (EV_READ | EV_WRITE)) + ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ | EV_WRITE)); +} + +int event_pending (struct event *ev, short events, struct timeval *tv) +{ + short revents = 0; + dLOOPev; + + if (ev->ev_events & EV_SIGNAL) + { + /* sig */ + if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig)) + revents |= EV_SIGNAL; + } + else if (ev->ev_events & (EV_READ | EV_WRITE)) + { + /* io */ + if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io)) + revents |= ev->ev_events & (EV_READ | EV_WRITE); + } + + if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to)) + { + revents |= EV_TIMEOUT; + + if (tv) + { + ev_tstamp at = ev_now (EV_A); + + tv->tv_sec = (long)at; + tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6); + } + } + + return events & revents; +} + +int event_priority_init (int npri) +{ + return event_base_priority_init (ev_x_cur, npri); +} + +int event_priority_set (struct event *ev, int pri) +{ + ev->ev_pri = pri; + + return 0; +} + +int event_base_set (struct event_base *base, struct event *ev) +{ + ev->ev_base = base; + + return 0; +} + +int event_base_loop (struct event_base *base, int flags) +{ + dLOOPbase; + + return !ev_run (EV_A_ flags); +} + +int event_base_dispatch (struct event_base *base) +{ + return event_base_loop (base, 0); +} + +static void +ev_x_loopexit_cb (int revents, void *base) +{ + dLOOPbase; + + ev_break (EV_A_ EVBREAK_ONE); +} + +int event_base_loopexit (struct event_base *base, struct timeval *tv) +{ + ev_tstamp after = ev_tv_get (tv); + dLOOPbase; + + ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., ev_x_loopexit_cb, (void *)base); + + return 0; +} + +struct ev_x_once +{ + int fd; + void (*cb)(int, short, void *); + void *arg; +}; + +static void +ev_x_once_cb (int revents, void *arg) +{ + struct ev_x_once *once = (struct ev_x_once *)arg; + + once->cb (once->fd, (short)revents, once->arg); + free (once); +} + +int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) +{ + struct ev_x_once *once = (struct ev_x_once *)malloc (sizeof (struct ev_x_once)); + dLOOPbase; + + if (!once) + return -1; + + once->fd = fd; + once->cb = cb; + once->arg = arg; + + ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), ev_tv_get (tv), ev_x_once_cb, (void *)once); + + return 0; +} + +int event_base_priority_init (struct event_base *base, int npri) +{ + /*dLOOPbase;*/ + + return 0; +} + diff --git a/framework/src/audit/src/libev/event.h b/framework/src/audit/src/libev/event.h new file mode 100644 index 00000000..aa81928f --- /dev/null +++ b/framework/src/audit/src/libev/event.h @@ -0,0 +1,177 @@ +/* + * libevent compatibility header, only core events supported + * + * Copyright (c) 2007,2008,2010,2012 Marc Alexander Lehmann <libev@schmorp.de> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modifica- + * tion, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- + * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- + * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- + * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License ("GPL") version 2 or any later version, + * in which case the provisions of the GPL are applicable instead of + * the above. If you wish to allow the use of your version of this file + * only under the terms of the GPL and not to allow others to use your + * version of this file under the BSD license, indicate your decision + * by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL. If you do not delete the + * provisions above, a recipient may use your version of this file under + * either the BSD or the GPL. + */ + +#ifndef EVENT_H_ +#define EVENT_H_ + +#ifdef EV_H +# include EV_H +#else +# include "ev.h" +#endif + +#ifndef EVLOOP_NONBLOCK +# define EVLOOP_NONBLOCK EVRUN_NOWAIT +#endif +#ifndef EVLOOP_ONESHOT +# define EVLOOP_ONESHOT EVRUN_ONCE +#endif +#ifndef EV_TIMEOUT +# define EV_TIMEOUT EV_TIMER +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* we need sys/time.h for struct timeval only */ +#if !defined (WIN32) || defined (__MINGW32__) +# include <time.h> /* mingw seems to need this, for whatever reason */ +# include <sys/time.h> +#endif + +struct event_base; + +#define EVLIST_TIMEOUT 0x01 +#define EVLIST_INSERTED 0x02 +#define EVLIST_SIGNAL 0x04 +#define EVLIST_ACTIVE 0x08 +#define EVLIST_INTERNAL 0x10 +#define EVLIST_INIT 0x80 + +typedef void (*event_callback_fn)(int, short, void *); + +struct event +{ + /* libev watchers we map onto */ + union { + struct ev_io io; + struct ev_signal sig; + } iosig; + struct ev_timer to; + + /* compatibility slots */ + struct event_base *ev_base; + event_callback_fn ev_callback; + void *ev_arg; + int ev_fd; + int ev_pri; + int ev_res; + int ev_flags; + short ev_events; +}; + +event_callback_fn event_get_callback (const struct event *ev); + +#define EV_READ EV_READ +#define EV_WRITE EV_WRITE +#define EV_PERSIST 0x10 +#define EV_ET 0x20 /* nop */ + +#define EVENT_SIGNAL(ev) ((int) (ev)->ev_fd) +#define EVENT_FD(ev) ((int) (ev)->ev_fd) + +#define event_initialized(ev) ((ev)->ev_flags & EVLIST_INIT) + +#define evtimer_add(ev,tv) event_add (ev, tv) +#define evtimer_set(ev,cb,data) event_set (ev, -1, 0, cb, data) +#define evtimer_del(ev) event_del (ev) +#define evtimer_pending(ev,tv) event_pending (ev, EV_TIMEOUT, tv) +#define evtimer_initialized(ev) event_initialized (ev) + +#define timeout_add(ev,tv) evtimer_add (ev, tv) +#define timeout_set(ev,cb,data) evtimer_set (ev, cb, data) +#define timeout_del(ev) evtimer_del (ev) +#define timeout_pending(ev,tv) evtimer_pending (ev, tv) +#define timeout_initialized(ev) evtimer_initialized (ev) + +#define signal_add(ev,tv) event_add (ev, tv) +#define signal_set(ev,sig,cb,data) event_set (ev, sig, EV_SIGNAL | EV_PERSIST, cb, data) +#define signal_del(ev) event_del (ev) +#define signal_pending(ev,tv) event_pending (ev, EV_SIGNAL, tv) +#define signal_initialized(ev) event_initialized (ev) + +const char *event_get_version (void); +const char *event_get_method (void); + +void *event_init (void); +void event_base_free (struct event_base *base); + +#define EVLOOP_ONCE EVLOOP_ONESHOT +int event_loop (int); +int event_loopexit (struct timeval *tv); +int event_dispatch (void); + +#define _EVENT_LOG_DEBUG 0 +#define _EVENT_LOG_MSG 1 +#define _EVENT_LOG_WARN 2 +#define _EVENT_LOG_ERR 3 +typedef void (*event_log_cb)(int severity, const char *msg); +void event_set_log_callback(event_log_cb cb); + +void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg); +int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv); + +int event_add (struct event *ev, struct timeval *tv); +int event_del (struct event *ev); +void event_active (struct event *ev, int res, short ncalls); /* ncalls is being ignored */ + +int event_pending (struct event *ev, short, struct timeval *tv); + +int event_priority_init (int npri); +int event_priority_set (struct event *ev, int pri); + +struct event_base *event_base_new (void); +const char *event_base_get_method (const struct event_base *); +int event_base_set (struct event_base *base, struct event *ev); +int event_base_loop (struct event_base *base, int); +int event_base_loopexit (struct event_base *base, struct timeval *tv); +int event_base_dispatch (struct event_base *base); +int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv); +int event_base_priority_init (struct event_base *base, int fd); + +/* next line is different in the libevent+libev version */ +/*libevent-include*/ + +#ifdef __cplusplus +} +#endif + +#endif + diff --git a/framework/src/audit/src/libev/libev.m4 b/framework/src/audit/src/libev/libev.m4 new file mode 100644 index 00000000..439fbde2 --- /dev/null +++ b/framework/src/audit/src/libev/libev.m4 @@ -0,0 +1,42 @@ +dnl this file is part of libev, do not make local modifications +dnl http://software.schmorp.de/pkg/libev + +dnl libev support +AC_CHECK_HEADERS(sys/inotify.h sys/epoll.h sys/event.h port.h poll.h sys/select.h sys/eventfd.h sys/signalfd.h) + +AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd signalfd) + +AC_CHECK_FUNCS(clock_gettime, [], [ + dnl on linux, try syscall wrapper first + if test $(uname) = Linux; then + AC_MSG_CHECKING(for clock_gettime syscall) + AC_LINK_IFELSE([AC_LANG_PROGRAM( + [#include <unistd.h> + #include <sys/syscall.h> + #include <time.h>], + [struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])], + [ac_have_clock_syscall=1 + AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, Define to 1 to use the syscall interface for clock_gettime) + AC_MSG_RESULT(yes)], + [AC_MSG_RESULT(no)]) + fi + if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then + AC_CHECK_LIB(rt, clock_gettime) + unset ac_cv_func_clock_gettime + AC_CHECK_FUNCS(clock_gettime) + fi +]) + +AC_CHECK_FUNCS(nanosleep, [], [ + if test -z "$LIBEV_M4_AVOID_LIBRT"; then + AC_CHECK_LIB(rt, nanosleep) + unset ac_cv_func_nanosleep + AC_CHECK_FUNCS(nanosleep) + fi +]) + +if test -z "$LIBEV_M4_AVOID_LIBM"; then + LIBM=m +fi +AC_SEARCH_LIBS(floor, $LIBM, [AC_DEFINE(HAVE_FLOOR, 1, Define to 1 if the floor function is available)]) + |