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Georgiy Lebedev authored
Fix strict aliasing rules violation by explicitly calling `memcpy`. libev is treated in a special way: -Wstrict-aliasing warning are ignored there, because: 1. libev authors claim that this is a false positive and their code is correct in respect to aliasing rules: see * http://lists.schmorp.de/pipermail/libev/2010q1/000943.html * http://lists.schmorp.de/pipermail/libev/2015q2/002540.html 2. it's a common practice to ignore compiler warning in libev: see * http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#COMPILER_WARNINGS * https://github.com/tarantool/tarantool/blob/dec0e0221e183fa972efa65bb0fb658112f2196f/cmake/BuildLibEV.cmake#L6-L12 Ignoring `-Wstrict-aliasing` for libev using diagnostic pragmas does not work, apparently, due to a bug in GNU: use the `system_header` pragma instead — ignoring all compiler warnings coming from libev is a win-win anyways. Needed for #7862 NO_CHANGELOG=build NO_DOC=build NO_TEST=build
Georgiy Lebedev authoredFix strict aliasing rules violation by explicitly calling `memcpy`. libev is treated in a special way: -Wstrict-aliasing warning are ignored there, because: 1. libev authors claim that this is a false positive and their code is correct in respect to aliasing rules: see * http://lists.schmorp.de/pipermail/libev/2010q1/000943.html * http://lists.schmorp.de/pipermail/libev/2015q2/002540.html 2. it's a common practice to ignore compiler warning in libev: see * http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#COMPILER_WARNINGS * https://github.com/tarantool/tarantool/blob/dec0e0221e183fa972efa65bb0fb658112f2196f/cmake/BuildLibEV.cmake#L6-L12 Ignoring `-Wstrict-aliasing` for libev using diagnostic pragmas does not work, apparently, due to a bug in GNU: use the `system_header` pragma instead — ignoring all compiler warnings coming from libev is a win-win anyways. Needed for #7862 NO_CHANGELOG=build NO_DOC=build NO_TEST=build
tarantool_ev.h 2.29 KiB
#ifndef TARANTOOL_EV_H_INCLUDED
#define TARANTOOL_EV_H_INCLUDED
/*
* Redistribution and use in source and binary forms, with or
* without modification, 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 <COPYRIGHT HOLDER> ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* <COPYRIGHT HOLDER> OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#pragma GCC system_header
#include "trivia/config.h"
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#define EV_MULTIPLICITY 1
#define EV_COMPAT3 0
#if defined(ENABLE_BUNDLED_LIBEV)
#define EV_STANDALONE 1
#define EV_USE_SELECT 1
#define EV_USE_POLL 1
#define EV_USE_NANOSLEEP 1
#define EV_PERIODIC_ENABLE 1
#define EV_IDLE_ENABLE 1
#define EV_STAT_ENABLE 1
#define EV_FORK_ENABLE 1
#define EV_CONFIG_H 0
#define EV_USE_FLOOR 1
#ifdef HAVE_CLOCK_GETTIME_DECL
# define EV_USE_REALTIME 1
# define EV_USE_MONOTONIC 1
#endif
#include <libev/ev.h>
#else /* !defined(ENABLE_BUNDLED_LIBEV) */
#include <ev.h>
#endif
#if defined(__cplusplus)
extern "C" {
#endif /* defined(__cplusplus) */
extern const ev_tstamp TIMEOUT_INFINITY;
typedef void (*ev_io_cb)(ev_loop *, ev_io *, int);
typedef void (*ev_async_cb)(ev_loop *, ev_async *, int);
#if defined(__cplusplus)
} /* extern "C" */
#endif /* defined(__cplusplus) */
#endif /* TARANTOOL_EV_H_INCLUDED */