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/*
* utils - misc libubox utility functions
*
* Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __LIBUBOX_UTILS_H
#define __LIBUBOX_UTILS_H
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>
/*
* calloc_a(size_t len, [void **addr, size_t len,...], NULL)
*
* allocate a block of memory big enough to hold multiple aligned objects.
* the pointer to the full object (starting with the first chunk) is returned,
* all other pointers are stored in the locations behind extra addr arguments.
* the last argument needs to be a NULL pointer
*/
#define calloc_a(len, ...) __calloc_a(len, ##__VA_ARGS__, NULL)
void *__calloc_a(size_t len, ...);
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#endif
#define __BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
#ifdef __OPTIMIZE__
extern int __BUILD_BUG_ON_CONDITION_FAILED;
#define BUILD_BUG_ON(condition) \
do { \
__BUILD_BUG_ON(condition); \
if (condition) \
__BUILD_BUG_ON_CONDITION_FAILED = 1; \
} while(0)
#else
#define BUILD_BUG_ON __BUILD_BUG_ON
#endif
#ifdef __APPLE__
#define CLOCK_REALTIME 0
#define CLOCK_MONOTONIC 1
void clock_gettime(int type, struct timespec *tv);
#endif
#endif
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