diff options
Diffstat (limited to '3rdparty/openpgm-svn-r1085/pgm/include/pgm/macros.h')
| -rw-r--r-- | 3rdparty/openpgm-svn-r1085/pgm/include/pgm/macros.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/3rdparty/openpgm-svn-r1085/pgm/include/pgm/macros.h b/3rdparty/openpgm-svn-r1085/pgm/include/pgm/macros.h new file mode 100644 index 0000000..8808ccb --- /dev/null +++ b/3rdparty/openpgm-svn-r1085/pgm/include/pgm/macros.h @@ -0,0 +1,171 @@ +/* vim:ts=8:sts=4:sw=4:noai:noexpandtab + * + * Pre-processor macros for cross-platform, cross-compiler ice cream. + * + * Copyright (c) 2010 Miru Limited. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __PGM_MACROS_H__ +#define __PGM_MACROS_H__ + +/* NULL, ptrdiff_t, and size_t + */ + +#include <stddef.h> + + +/* GCC function attributes + * http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html + */ + +#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) + +/* No side-effects except return value, may follow pointers and read globals */ +# define PGM_GNUC_PURE __attribute__((__pure__)) + +/* Returns new memory like malloc() */ +# define PGM_GNUC_MALLOC __attribute__((__malloc__)) + +# define PGM_GNUC_CACHELINE_ALIGNED __attribute__((__aligned__(SMP_CACHE_BYTES), \ + __section__((".data.cacheline_aligned"))) +# define PGM_GNUC_READ_MOSTLY __attribute__((__section__(".data.read_mostly"))) + +#else +# define PGM_GNUC_PURE +# define PGM_GNUC_MALLOC +# define PGM_GNUC_CACHELINE_ALIGNED +# define PGM_GNUC_READ_MOSTLY +#endif + +#if (__GNUC__ >= 4) + +/* Variable argument function with NULL terminated list */ +# define PGM_GNUC_NULL_TERMINATED __attribute__((__sentinel__)) +#else +# define PGM_GNUC_NULL_TERMINATED +#endif + +#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) + +/* malloc() with xth parameter being size */ +# define PGM_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x))) + +/* malloc() with xth*yth parameters being size */ +# define PGM_GNUC_ALLOC_SIZE2(x,y) __attribute__((__alloc_size__(x,y))) +#else +# define PGM_GNUC_ALLOC_SIZE(x) +# define PGM_GNUC_ALLOC_SIZE2(x,y) +#endif + +#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ > 4) + +/* printf() like function */ +# define PGM_GNUC_PRINTF(format, args) __attribute__((__format__ (__printf__, format, args))) +# define PGM_GNUC_FORMAT(format) __attribute__((__format_arg__ (format))) + +/* Function will never return */ +# define PGM_GNUC_NORETURN __attribute__((__noreturn__)) + +/* No side-effects except return value, must not follow pointers or read globals */ +# define PGM_GNUC_CONST __attribute__((__const__)) + +/* Unused function */ +# define PGM_GNUC_UNUSED __attribute__((__unused__)) + +#else /* !__GNUC__ */ +# define PGM_GNUC_PRINTF(format, args) +# define PGM_GNUC_NORETURN +# define PGM_GNUC_CONST +# define PGM_GNUC_UNUSED +#endif /* !__GNUC__ */ + +#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) + +/* Raise compiler warning if caller ignores return value */ +# define PGM_GNUC_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) + +# ifdef CONFIG_HAVE_DSO_VISIBILITY +/* Hidden visibility */ +# define PGM_GNUC_INTERNAL __attribute__((visibility("hidden"))) +# else +# define PGM_GNUC_INTERNAL +# endif +#else /* !__GNUC__ */ +# define PGM_GNUC_WARN_UNUSED_RESULT +# if defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550) && defined(CONFIG_HAVE_DSO_VISIBILITY) +# define PGM_GNUC_INTERNAL __hidden +# else +# define PGM_GNUC_INTERNAL +# endif +#endif /* __GNUC__ */ + + +/* Compiler time assertions, must be on unique lines in the project */ +#define PGM_PASTE_ARGS(identifier1,identifier2) identifier1 ## identifier2 +#define PGM_PASTE(identifier1,identifier2) PGM_PASTE_ARGS (identifier1, identifier2) +#define PGM_STATIC_ASSERT(expr) typedef struct { char compile_time_assertion[(expr) ? 1 : -1]; } PGM_PASTE (_pgm_static_assert_, __LINE__) + +/* Function declaration wrappers for C++ */ +#ifdef __cplusplus +# define PGM_BEGIN_DECLS extern "C" { +# define PGM_END_DECLS } +#else +# define PGM_BEGIN_DECLS +# define PGM_END_DECLS +#endif + +/* Surprisingly still not defined in C99 */ +#ifndef FALSE +# define FALSE (0) +#endif + +#ifndef TRUE +# define TRUE (!FALSE) +#endif + +#undef MAX +#define MAX(a, b) (((a) > (b)) ? (a) : (b)) + +#undef MIN +#define MIN(a, b) (((a) < (b)) ? (a) : (b)) + +#undef ABS +#define ABS(a) (((a) < 0) ? -(a) : (a)) + +#undef CLAMP +#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x))) + +/* Number of elements */ +#define PGM_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0])) + +/* Structure offsets */ +#if defined(__GNUC__) && __GNUC__ >= 4 +# define PGM_OFFSETOF(struct_type, member) (offsetof (struct_type, member)) +#else +# define PGM_OFFSETOF(struct_type, member) ((size_t)((char*)&((struct_type*) 0)->member)) +#endif + +/* Branch prediction hint */ +#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__) +# define PGM_LIKELY(expr) __builtin_expect ((expr), 1) +# define PGM_UNLIKELY(expr) __builtin_expect ((expr), 0) +#else +# define PGM_LIKELY(expr) (expr) +# define PGM_UNLIKELY(expr) (expr) +#endif + +#endif /* __PGM_MACROS_H__ */ |