1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2001-2002 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 /*
30 * Routines for memory management
31 */
32
33 #include <sys/types.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <strings.h>
38
39 static void
memory_bailout(void)40 memory_bailout(void)
41 {
42 (void) fprintf(stderr, "Out of memory\n");
43 exit(1);
44 }
45
46 void *
xmalloc(size_t size)47 xmalloc(size_t size)
48 {
49 void *mem;
50
51 if ((mem = malloc(size)) == NULL)
52 memory_bailout();
53
54 return (mem);
55 }
56
57 void *
xcalloc(size_t size)58 xcalloc(size_t size)
59 {
60 void *mem;
61
62 mem = xmalloc(size);
63 bzero(mem, size);
64
65 return (mem);
66 }
67
68 char *
xstrdup(const char * str)69 xstrdup(const char *str)
70 {
71 char *newstr;
72
73 if ((newstr = strdup(str)) == NULL)
74 memory_bailout();
75
76 return (newstr);
77 }
78
79 char *
xstrndup(char * str,size_t len)80 xstrndup(char *str, size_t len)
81 {
82 char *newstr;
83
84 if ((newstr = malloc(len + 1)) == NULL)
85 memory_bailout();
86
87 (void) strncpy(newstr, str, len);
88 newstr[len] = '\0';
89
90 return (newstr);
91 }
92
93 void *
xrealloc(void * ptr,size_t size)94 xrealloc(void *ptr, size_t size)
95 {
96 void *mem;
97
98 if ((mem = realloc(ptr, size)) == NULL)
99 memory_bailout();
100
101 return (mem);
102 }
103