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
24 * @note The functions here never fail because they simply abort your
25 * program in case of an error.
27 #ifndef FIRM_ADT_XMALLOC_H
28 #define FIRM_ADT_XMALLOC_H
34 /* Includes for alloca() */
41 /* xmalloc() & friends. */
43 FIRM_API void *xmalloc(size_t size);
44 FIRM_API void *xrealloc(void *ptr, size_t size);
45 FIRM_API char *xstrdup(const char *str);
47 #define xfree(ptr) free(ptr)
50 * Allocate n objects of a certain type
52 #define XMALLOCN(type, n) ((type*)xmalloc(sizeof(type) * (n)))
55 * Allocate n objects of a certain type and zero them
57 #define XMALLOCNZ(type, n) ((type*)memset(xmalloc(sizeof(type) * (n)), 0, sizeof(type) * (n)))
60 * Allocate one object of a certain type
62 #define XMALLOC(type) XMALLOCN(type, 1)
65 * Allocate one object of a certain type and zero it
67 #define XMALLOCZ(type) XMALLOCNZ(type, 1)
70 * Reallocate n objects of a certain type
72 #define XREALLOC(ptr, type, n) ((type*)xrealloc(ptr, sizeof(type) * (n)))
75 * Allocate an object with n elements of a flexible array member
77 #define XMALLOCF(type, member, n) ((type*)xmalloc(offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
80 * Allocate an object with n elements of a flexible array member and zero the
83 #define XMALLOCFZ(type, member, n) ((type*)memset(XMALLOCF(type, member, (n)), 0, offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
86 * Allocate n objects of a certain type on the stack
88 #define ALLOCAN(type, n) ((type*)alloca(sizeof(type) * (n)))
91 * Allocate n objects of a certain type on the stack and zero them
93 #define ALLOCANZ(type, n) ((type*)memset((type*)alloca(sizeof(type) * (n)), 0, sizeof(type) * (n)))
96 * Allocate n objects of a certain type on the given obstack
98 #define OALLOCN(obst, type, n) ((type*)obstack_alloc((obst), sizeof(type) * (n)))
101 * Allocate n objects of a certain type on the given obstack and zero them
103 #define OALLOCNZ(obst, type, n) ((type*)memset(OALLOCN((obst), type, (n)), 0, sizeof(type) * (n)))
106 * Allocate one object of a certain type on the given obstack
108 #define OALLOC(obst, type) OALLOCN(obst, type, 1)
111 * Allocate one object of a certain type on the given obstack and zero it
113 #define OALLOCZ(obst, type) OALLOCNZ(obst, type, 1)
116 * Allocate an object with n elements of a flexible array member on the given
119 #define OALLOCF(obst, type, member, n) ((type*)obstack_alloc((obst), offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
122 * Allocate an object with n elements of a flexible array member on the given
123 * obstack and zero the whole object
125 #define OALLOCFZ(obst, type, member, n) ((type*)memset(OALLOCF((obst), type, member, (n)), 0, offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))