1/* $NetBSD: defs.h,v 1.1 2010/08/07 04:13:57 agc Exp $ */
2
3/*-
4 * Copyright (c) 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Alistair Crooks (agc@NetBSD.org)
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31#ifndef DEFS_H_
32#define DEFS_H_
33
34#include <sys/types.h>
35#include <sys/param.h>
36
37#ifdef HAVE_INTTYPES_H
38#include <inttypes.h>
39#endif
40
41#ifdef HAVE_STDINT_H
42#include <stdint.h>
43#endif
44
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48
49#define NEWARRAY(type,ptr,size,where,action) do {			\
50	if ((ptr = calloc(sizeof(type), (unsigned)(size))) == NULL) {	\
51		(void) fprintf(stderr, "%s: can't allocate %lu bytes\n", \
52			where, (unsigned long)(size * sizeof(type)));	\
53		action;							\
54	}								\
55} while( /* CONSTCOND */ 0)
56
57#define RENEW(type, _ptr, _size, _newsize, where, action) do {		\
58	type *_newptr;							\
59	_newptr = realloc(_ptr, (size_t)(_newsize) * sizeof(type));	\
60	if (_newptr == NULL) {						\
61		(void) fprintf(stderr, "%s: can't realloc %lu bytes\n",	\
62			where, (unsigned long)((_newsize) * sizeof(type))); \
63		action;							\
64	} else {							\
65		(void) memset(&_newptr[_size], 0x0,			\
66			(_newsize - _size) * sizeof(type));		\
67		_ptr = _newptr;						\
68		_size = _newsize;					\
69	}								\
70} while( /* CONSTCOND */ 0)
71
72#define NEW(type, ptr, where, action)	NEWARRAY(type, ptr, 1, where, action)
73
74#define FREE(ptr)	free(ptr)
75
76#define ALLOC(type, v, size, c, init, incr, where, action) do {		\
77	uint32_t	_newsize = size;				\
78	if (size == 0) {						\
79		_newsize = init;					\
80		NEWARRAY(type, v, _newsize, where ": new", action);	\
81	} else if (c == size) {						\
82		_newsize = size + incr;					\
83		RENEW(type, v, size, _newsize, where ": renew", action); \
84	}								\
85	size = _newsize;						\
86} while( /* CONSTCOND */ 0)
87
88#define DEFINE_ARRAY(name, type)					\
89typedef struct name {							\
90	uint32_t	c;						\
91	uint32_t	size;						\
92	type	       *v;						\
93} name
94
95#endif /* !DEFS_H_ */
96