2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2005-2008 Poul-Henning Kamp
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #define ALLOC_OBJ(to, type_magic) \
33 (to) = calloc(1, sizeof *(to)); \
35 (to)->magic = (type_magic); \
38 #define FREE_OBJ(to) \
44 #define VALID_OBJ(ptr, type_magic) \
45 ((ptr) != NULL && (ptr)->magic == (type_magic))
47 #define CHECK_OBJ(ptr, type_magic) \
49 assert((ptr)->magic == type_magic); \
52 #define CHECK_OBJ_NOTNULL(ptr, type_magic) \
54 assert((ptr) != NULL); \
55 assert((ptr)->magic == type_magic); \
58 #define CHECK_OBJ_ORNULL(ptr, type_magic) \
61 assert((ptr)->magic == type_magic); \
64 #define CAST_OBJ(to, from, type_magic) \
68 CHECK_OBJ((to), (type_magic)); \
71 #define CAST_OBJ_NOTNULL(to, from, type_magic) \
74 assert((to) != NULL); \
75 CHECK_OBJ((to), (type_magic)); \