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/* tf.h - libtf helper defines
*
* Copyright (C) 2009 Timo Teräs <timo.teras@iki.fi>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 or later as
* published by the Free Software Foundation.
*
* See http://www.gnu.org/ for details.
*/
#ifndef TF_DEFINES_H
#define TF_DEFINES_H
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#ifndef NULL
#define NULL 0L
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef array_size
#define array_size(array) (sizeof(array) / sizeof((array)[0]))
#endif
#ifndef offsetof
#define offsetof(type, member) __builtin_offsetof (type, member)
#endif
#ifndef container_of
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#endif
#ifndef likely
#define likely(x) __builtin_expect(!!(x), 1)
#endif
#ifndef unlikely
#define unlikely(x) __builtin_expect(!!(x), 0)
#endif
#define attribute_never_inline __attribute__((noinline))
#define attribute_weak_function __attribute__((weak))
#define attribute_noreturn __attribute__((noreturn))
#define attribute_warn_unused_result __attribute__((warn_unused_result))
#define attribute_deprecated __attribute__((deprecated))
#define TF_BUG_ON(cond) if (unlikely(cond)) { \
fprintf(stderr, "BUG: failure at %s:%d/%s(): %s!\n", \
__FILE__, __LINE__, __func__, #cond); \
abort(); \
}
#define TF_ALIGN(size,align) ((((size_t)(size)) + (align)-1) & ~((align)-1))
#define TF_EMPTY_ARRAY 0
#ifndef TF_STACK_SIZE
#define TF_STACK_SIZE 4096
#endif
/* Monotonic time */
#define TF_INFINITE -1
typedef uint32_t tf_mtime_t;
typedef int32_t tf_mtime_diff_t;
static inline
tf_mtime_diff_t tf_mtime_diff(tf_mtime_t a, tf_mtime_t b)
{
return (tf_mtime_diff_t)(a - b);
}
#endif
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