/*- * Copyright (c) 2005-2008 Poul-Henning Kamp * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. * * $FreeBSD$ */ #define ALLOC_OBJ(to, type_magic) \ do { \ (to) = calloc(sizeof *(to), 1); \ if ((to) != NULL) \ (to)->magic = (type_magic); \ } while (0) #define FREE_OBJ(to) \ do { \ (to)->magic = (0); \ free(to); \ } while (0) #define VALID_OBJ(ptr, type_magic) \ ((ptr) != NULL && (ptr)->magic == (type_magic)) #define CHECK_OBJ(ptr, type_magic) \ do { \ assert((ptr)->magic == type_magic); \ } while (0) #define CHECK_OBJ_NOTNULL(ptr, type_magic) \ do { \ assert((ptr) != NULL); \ assert((ptr)->magic == type_magic); \ } while (0) #define CHECK_OBJ_ORNULL(ptr, type_magic) \ do { \ if ((ptr) != NULL) \ assert((ptr)->magic == type_magic); \ } while (0) #define CAST_OBJ(to, from, type_magic) \ do { \ (to) = (from); \ if ((to) != NULL) \ CHECK_OBJ((to), (type_magic)); \ } while (0) #define CAST_OBJ_NOTNULL(to, from, type_magic) \ do { \ (to) = (from); \ assert((to) != NULL); \ CHECK_OBJ((to), (type_magic)); \ } while (0)