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/* 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/>.
*/
/*!
* \file common.h
*
* \author Lubos Slovak <lubos.slovak@nic.cz>
*
* \brief Common macros, includes and utilities.
*
* \addtogroup utils
* @{
*/
#ifndef _KNOTD_COMMON_H_
#define _KNOTD_COMMON_H_
#include <signal.h>
#include <stdint.h>
#include <config.h>
/*
* Common types and constants.
*/
#ifndef UINT_DEFINED
typedef unsigned int uint; /*!< \brief Unsigned. */
#define UINT_DEFINED
#endif
#define PROJECT_EXEC SBINDIR "/" "knotd" /*!< \brief Project executable. */
#define ZONEPARSER_EXEC LIBEXECDIR "/" "knot-zcompile" /*!< \brief Zoneparser executable. */
#define PID_FILE "knot.pid" /*!< \brief Server PID file name. */
/*
* Server.
*/
#define CPU_ESTIMATE_MAGIC 0 /*!< \brief Extra threads to the number of cores.*/
#define DEFAULT_THR_COUNT 2 /*!< \brief Default thread count. */
#define DEFAULT_PORT 53531 /*!< \brief Default interface port. */
#define TCP_BACKLOG_SIZE 5 /*!< \brief TCP listen backlog size. */
#define XFR_THREADS_COUNT 3 /*!< \brief Number of threads for XFR handler. */
#define RECVMMSG_BATCHLEN 32 /*!< \brief Define for recvmmsg() batch size. */
///*! \brief If defined, zone structures will use hash table for lookup. */
//#define COMPRESSION_PEDANTIC
///*!
// * \brief If defined, tests will use ldns library to parse sample data.
// *
// * If not defined, some tests will be disabled.
// */
//#define TEST_WITH_LDNS
///*! \brief If defined, the statistics module will be enabled. */
//#define STAT_COMPILE
#ifdef HAVE_LDNS
#define TEST_WITH_LDNS
#endif
/*
* Common includes.
*/
#include "common/latency.h"
#include "common/print.h"
#include "common/log.h"
#include "common/errcode.h"
#include "knot/other/debug.h"
/*! \brief Eliminate compiler warning with unused parameters. */
#define UNUSED(param) (void)(param)
/* 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)\n", \
__FILE__, __LINE__, PACKAGE_STRING)
#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
/* Workarounds for clock_gettime() not available on some platforms. */
#ifdef HAVE_CLOCK_GETTIME
#define time_now(x) clock_gettime(CLOCK_MONOTONIC, (x))
typedef struct timespec timev_t;
#elif HAVE_GETTIMEOFDAY
#define time_now(x) gettimeofday((x), NULL)
typedef struct timeval timev_t;
#else
#error Neither clock_gettime() nor gettimeofday() found. At least one is required.
#endif
#endif /* _KNOTD_COMMON_H_ */
/*! @} */
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