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
39 /* xmalloc() & friends. */
41 void *xmalloc(size_t size);
42 void *xrealloc(void *ptr, size_t size);
43 char *xstrdup(const char *str);
45 #define xfree(ptr) free(ptr)
48 * Allocate n objects of a certain type
50 #define XMALLOCN(type, n) ((type*)xmalloc(sizeof(type) * (n)))
53 * Allocate n objects of a certain type and zero them
55 #define XMALLOCNZ(type, n) ((type*)memset(xmalloc(sizeof(type) * (n)), 0, sizeof(type) * (n)))
58 * Allocate one object of a certain type
60 #define XMALLOC(type) XMALLOCN(type, 1)
63 * Allocate one object of a certain type and zero it
65 #define XMALLOCZ(type) XMALLOCNZ(type, 1)
68 * Reallocate n objects of a certain type
70 #define XREALLOC(ptr, type, n) ((type*)xrealloc(ptr, sizeof(type) * (n)))
73 * Allocate an object with n elements of a flexible array member
75 #define XMALLOCF(type, member, n) ((type*)xmalloc(offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
78 * Allocate an object with n elements of a flexible array member and zero the
81 #define XMALLOCFZ(type, member, n) ((type*)memset(XMALLOCF(type, member, (n)), 0, offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
84 * Allocate n objects of a certain type on the stack
86 #define ALLOCAN(type, n) ((type*)alloca(sizeof(type) * (n)))
89 * Allocate n objects of a certain type on the stack and zero them
91 #define ALLOCANZ(type, n) ((type*)memset((type*)alloca(sizeof(type) * (n)), 0, sizeof(type) * (n)))
94 * Allocate n objects of a certain type on the given obstack
96 #define OALLOCN(obst, type, n) ((type*)obstack_alloc((obst), sizeof(type) * (n)))
99 * Allocate n objects of a certain type on the given obstack and zero them
101 #define OALLOCNZ(obst, type, n) ((type*)memset(OALLOCN((obst), type, (n)), 0, sizeof(type) * (n)))
104 * Allocate one object of a certain type on the given obstack
106 #define OALLOC(obst, type) OALLOCN(obst, type, 1)
109 * Allocate one object of a certain type on the given obstack and zero it
111 #define OALLOCZ(obst, type) OALLOCNZ(obst, type, 1)
114 * Allocate an object with n elements of a flexible array member on the given
117 #define OALLOCF(obst, type, member, n) ((type*)obstack_alloc((obst), offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
120 * Allocate an object with n elements of a flexible array member on the given
121 * obstack and zero the whole object
123 #define OALLOCFZ(obst, type, member, n) ((type*)memset(OALLOCF((obst), type, member, (n)), 0, offsetof(type, member) + sizeof(*((type*)0)->member) * (n)))
126 /* Includes for alloca() */