/* $NetBSD: defs.h,v 1.1 2007/04/15 15:10:57 agc Exp $ */

/*
 * Copyright (c) 1999-2005 Alistair Crooks.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef DEFS_H_
#define DEFS_H_

#include <sys/types.h>
#include <sys/param.h>

#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define NEWARRAY(type,ptr,size,where,action) do {                       \
        if ((ptr = (type *) calloc(sizeof(type), (unsigned)(size))) == NULL) { \
                (void) fprintf(stderr, "%s: can't allocate %lu bytes\n", \
                        where, (unsigned long)(size * sizeof(type)));   \
                action;                                                 \
        }                                                               \
} while( /* CONSTCOND */ 0)

#define RENEW(type,ptr,size,where,action) do {                          \
        type *_newptr;                                                  \
        if ((_newptr = (type *) realloc(ptr, sizeof(type) * (size))) == NULL) { \
                (void) fprintf(stderr, "%s: can't realloc %lu bytes\n", \
                        where, (unsigned long)(size * sizeof(type)));   \
                action;                                                 \
        } else {                                                        \
                ptr = _newptr;                                          \
        }                                                               \
} while( /* CONSTCOND */ 0)

#define NEW(type, ptr, where, action)   NEWARRAY(type, ptr, 1, where, action)

#define FREE(ptr)       (void) free(ptr)

#define ALLOC(type, v, size, c, init, incr, where, action) do {         \
        uint32_t        _newsize = size;                                \
        if (size == 0) {                                                \
                _newsize = init;                                        \
                NEWARRAY(type, v, _newsize, where ": new", action);     \
        } else if (c == size) {                                         \
                _newsize = size + incr;                                 \
                RENEW(type, v, _newsize, where ": renew", action);      \
        }                                                               \
        size = _newsize;                                                \
} while( /* CONSTCOND */ 0)

/*              (void) memset(&v[size], 0x0, sizeof(type) * incr);      \*/

#define DEFINE_ARRAY(name, type)                                        \
typedef struct name {                                                   \
        uint32_t        c;                                              \
        uint32_t        size;                                           \
        type           *v;                                              \
} name

#endif /* !DEFS_H_ */