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Diffstat (limited to 'src/libknot/common.h')
| -rw-r--r-- | src/libknot/common.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/libknot/common.h b/src/libknot/common.h new file mode 100644 index 0000000..9b2d8ae --- /dev/null +++ b/src/libknot/common.h @@ -0,0 +1,105 @@ +/*! + * \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> + +#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 likely +/*! \brief Optimize for x to be true value. */ +#define likely(x) __builtin_expect((x),1) +#endif +#ifndef unlikely +/*! \brief Optimize for x to be false value. */ +#define unlikely(x) __builtin_expect((x),0) +#endif + +/* Optimisation macros. */ +#ifndef likely +/*! \brief Optimize for x to be true value. */ +#define likely(x) __builtin_expect((x),1) +#endif +#ifndef unlikely +/*! \brief Optimize for x to be false value. */ +#define 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_ */ + +/*! @} */ |