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/*
* Copyright (c) 2008, 2009 Nicira Networks.
*
* 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 UTIL_H
#define UTIL_H 1
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "compiler.h"
#ifndef va_copy
#ifdef __va_copy
#define va_copy __va_copy
#else
#define va_copy(dst, src) ((dst) = (src))
#endif
#endif
#ifndef __cplusplus
/* Build-time assertion building block. */
#define BUILD_ASSERT__(EXPR) \
sizeof(struct { unsigned int build_assert_failed : (EXPR) ? 1 : -1; })
/* Build-time assertion for use in a statement context. */
#define BUILD_ASSERT(EXPR) (void) BUILD_ASSERT__(EXPR)
/* Build-time assertion for use in a declaration context. */
#define BUILD_ASSERT_DECL(EXPR) \
extern int (*build_assert(void))[BUILD_ASSERT__(EXPR)]
#else /* __cplusplus */
#include <boost/static_assert.hpp>
#define BUILD_ASSERT BOOST_STATIC_ASSERT
#define BUILD_ASSERT_DECL BOOST_STATIC_ASSERT
#endif /* __cplusplus */
extern const char *program_name;
#define ARRAY_SIZE(ARRAY) (sizeof ARRAY / sizeof *ARRAY)
#define ROUND_UP(X, Y) (((X) + ((Y) - 1)) / (Y) * (Y))
#define ROUND_DOWN(X, Y) ((X) / (Y) * (Y))
#define IS_POW2(X) ((X) && !((X) & ((X) - 1)))
#ifndef MIN
#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
#endif
#ifndef MAX
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
#endif
#define NOT_REACHED() abort()
#define NOT_IMPLEMENTED() abort()
#define NOT_TESTED() ((void) 0) /* XXX should print a message. */
/* Given POINTER, the address of the given MEMBER in a STRUCT object, returns
the STRUCT object. */
#define CONTAINER_OF(POINTER, STRUCT, MEMBER) \
((STRUCT *) ((char *) (POINTER) - offsetof (STRUCT, MEMBER)))
#ifdef __cplusplus
extern "C" {
#endif
void set_program_name(const char *);
void ovs_print_version(char *date, char *time,
uint8_t min_ofp, uint8_t max_ofp);
#define OVS_PRINT_VERSION(min_ofp, max_ofp) \
ovs_print_version(__DATE__, __TIME__, (min_ofp), (max_ofp))
void out_of_memory(void) NO_RETURN;
void *xmalloc(size_t) MALLOC_LIKE;
void *xcalloc(size_t, size_t) MALLOC_LIKE;
void *xrealloc(void *, size_t);
void *xmemdup(const void *, size_t) MALLOC_LIKE;
char *xmemdup0(const char *, size_t) MALLOC_LIKE;
char *xstrdup(const char *) MALLOC_LIKE;
char *xasprintf(const char *format, ...) PRINTF_FORMAT(1, 2) MALLOC_LIKE;
char *xvasprintf(const char *format, va_list) PRINTF_FORMAT(1, 0) MALLOC_LIKE;
void *x2nrealloc(void *p, size_t *n, size_t s);
void ovs_strlcpy(char *dst, const char *src, size_t size);
void ovs_fatal(int err_no, const char *format, ...)
PRINTF_FORMAT(2, 3) NO_RETURN;
void ovs_error(int err_no, const char *format, ...) PRINTF_FORMAT(2, 3);
void ovs_hex_dump(FILE *, const void *, size_t, uintptr_t offset, bool ascii);
bool str_to_int(const char *, int base, int *);
bool str_to_long(const char *, int base, long *);
bool str_to_llong(const char *, int base, long long *);
bool str_to_uint(const char *, int base, unsigned int *);
bool str_to_ulong(const char *, int base, unsigned long *);
bool str_to_ullong(const char *, int base, unsigned long long *);
#ifdef __cplusplus
}
#endif
#endif /* util.h */
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