2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief never failing wrappers for malloc() & friends.
23 * @author Markus Armbruster
25 * @note The functions here never fail because they simply abort your
26 * program in case of an error.
28 #ifndef FIRM_ADT_XMALLOC_H
29 #define FIRM_ADT_XMALLOC_H
35 /* Includes for alloca() */
45 /* xmalloc() & friends. */
47 FIRM_API void *xmalloc(size_t size);
48 FIRM_API void *xrealloc(void *ptr, size_t size);
49 FIRM_API char *xstrdup(const char *str);
51 #define xfree(ptr) free(ptr)
54 * Allocate n objects of a certain type
56 #define XMALLOCN(type, n) ((type*)xmalloc(sizeof(type) * (n)))
59 * Allocate n objects of a certain type and zero them
61 #define XMALLOCNZ(type, n) ((type*)memset(xmalloc(sizeof(type) * (n)), 0, sizeof(type) * (n)))
64 * Allocate one object of a certain type
66 #define XMALLOC(type) XMALLOCN(type, 1)
69 * Allocate one object of a certain type and zero it
71 #define XMALLOCZ(type) XMALLOCNZ(type, 1)
74 * Reallocate n objects of a certain type
76 #define XREALLOC(ptr, type, n) ((type*)xrealloc(ptr, sizeof(type) * (n)))
79 * Allocate an object with n elements of a flexible array member
81 #define XMALLOCF(type, member, n) ((type*)xmalloc(offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
84 * Allocate an object with n elements of a flexible array member and zero the
87 #define XMALLOCFZ(type, member, n) ((type*)memset(XMALLOCF(type, member, (n)), 0, offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
90 * Allocate n objects of a certain type on the stack
92 #define ALLOCAN(type, n) ((type*)alloca(sizeof(type) * (n)))
95 * Allocate n objects of a certain type on the stack and zero them
97 #define ALLOCANZ(type, n) ((type*)memset((type*)alloca(sizeof(type) * (n)), 0, sizeof(type) * (n)))
100 * Allocate n objects of a certain type on the given obstack
102 #define OALLOCN(obst, type, n) ((type*)obstack_alloc((obst), sizeof(type) * (n)))
105 * Allocate n objects of a certain type on the given obstack and zero them
107 #define OALLOCNZ(obst, type, n) ((type*)memset(OALLOCN((obst), type, (n)), 0, sizeof(type) * (n)))
110 * Allocate one object of a certain type on the given obstack
112 #define OALLOC(obst, type) OALLOCN(obst, type, 1)
115 * Allocate one object of a certain type on the given obstack and zero it
117 #define OALLOCZ(obst, type) OALLOCNZ(obst, type, 1)
120 * Allocate an object with n elements of a flexible array member on the given
123 #define OALLOCF(obst, type, member, n) ((type*)obstack_alloc((obst), offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
126 * Allocate an object with n elements of a flexible array member on the given
127 * obstack and zero the whole object
129 #define OALLOCFZ(obst, type, member, n) ((type*)memset(OALLOCF((obst), type, member, (n)), 0, offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))