utils.h

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/* 
 * cc-common
 *
 * Alistair King, CAIDA, UC San Diego
 * corsaro-info@caida.org
 *
 * ntholl and htonll macros from 
 *   http://www.codeproject.com/KB/cpp/endianness.aspx
 *
 * Other functions from scamper as noted in utils.c
 * 
 * Copyright (C) 2012 The Regents of the University of California.
 * 
 * This file is part of cc-common.
 *
 * cc-common 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.
 *
 * cc-common 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 cc-common.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef __UTILS_H
#define __UTILS_H

#include "config.h"

#include <inttypes.h>

#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif

#define XSTR(a) #a

#define STR(a) XSTR(a)

#define ARR_CNT(a) (sizeof(a) / sizeof(a[0]))

/* ntholl and htonll macros from 
   http://www.codeproject.com/KB/cpp/endianness.aspx */
#ifndef ntohll
#define ntohll(x) (((uint64_t)(ntohl((int)((x << 32) >> 32))) << 32) |  \
                   (uint32_t)ntohl(((int)(x >> 32))))
#endif

#ifndef htonll
#define htonll(x) ntohll(x)
#endif

void bytes_htons(uint8_t *bytes, uint16_t u16);

void bytes_htonl(uint8_t *bytes, uint32_t u32);

void bytes_htonll(uint8_t *bytes, uint64_t u64);

void gettimeofday_wrap(struct timeval *tv);

void *malloc_zero(const size_t size);

int timeval_subtract (struct timeval *result, 
                      const struct timeval *x, const struct timeval *y);

void chomp(char *line);

#endif /* __UTILS_H */