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/*!
* \file common.h
*
* \author Lubos Slovak <lubos.slovak@nic.cz>
*
* \brief Common macros, includes and utilities.
*
* \addtogroup libknot
* @{
*/
/* Copyright (C) 2011 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "common/errcode.h"
#ifdef HAVE_LIBLDNS
#define TEST_WITH_LDNS
#endif
#ifndef _KNOT_COMMON_H_
#define _KNOT_COMMON_H_
#define KNOT_NAME "lib" PACKAGE_NAME // Project name
#define KNOT_VER PACKAGE_VERSION // 0xMMIIRR (MAJOR,MINOR,REVISION)
#ifndef UINT_DEFINED
typedef unsigned int uint; /*!< \brief Unsigned. */
#define UINT_DEFINED
#endif
/*! \brief If defined, zone structures will use hash table for lookup. */
#define USE_HASH_TABLE
/*! \brief Eliminate compiler warning with unused parameters. */
#define UNUSED(param) (void)(param)
/*! \brief Type-safe minimum macro. */
#define MIN(a, b) \
({ typeof (a) _a = (a); typeof (b) _b = (b); _a < _b ? _a : _b; })
/*! \brief Type-safe maximum macro. */
#define MAX(a, b) \
({ typeof (a) _a = (a); typeof (b) _b = (b); _a > _b ? _a : _b; })
/* Optimisation macros. */
#ifndef knot_likely
/*! \brief Optimize for x to be true value. */
#define knot_likely(x) __builtin_expect((x),1)
#endif
#ifndef knot_unlikely
/*! \brief Optimize for x to be false value. */
#define knot_unlikely(x) __builtin_expect((x),0)
#endif
/* Optimisation macros. */
#ifndef knot_likely
/*! \brief Optimize for x to be true value. */
#define knot_likely(x) __builtin_expect((x),1)
#endif
#ifndef knot_unlikely
/*! \brief Optimize for x to be false value. */
#define knot_unlikely(x) __builtin_expect((x),0)
#endif
/*! \todo Refactor theese. We should have an allocator function handling this.*/
#ifndef ERR_ALLOC_FAILED
#define ERR_ALLOC_FAILED fprintf(stderr, "Allocation failed at %s:%d (%s ver.%s)\n", \
__FILE__, __LINE__, KNOT_NAME, KNOT_VER)
#endif
#ifndef CHECK_ALLOC_LOG
#define CHECK_ALLOC_LOG(var, ret) \
do { \
if ((var) == NULL) { \
ERR_ALLOC_FAILED; \
return (ret); \
} \
} while (0)
#endif
#ifndef CHECK_ALLOC
#define CHECK_ALLOC(var, ret) \
do { \
if ((var) == NULL) { \
return (ret); \
} \
} while (0)
#endif
#endif /* _KNOT_COMMON_H_ */
/*! @} */
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