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 /*
28 * Routines for memory management
29 */
30
31 #include <sys/types.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <strings.h>
36
37 static void
memory_bailout(void)38 memory_bailout(void)
39 {
40 (void) fprintf(stderr, "Out of memory\n");
41 exit(1);
42 }
43
44 void *
xmalloc(size_t size)45 xmalloc(size_t size)
46 {
47 void *mem;
48
49 if ((mem = malloc(size)) == NULL)
50 memory_bailout();
51
52 return (mem);
53 }
54
55 void *
xcalloc(size_t size)56 xcalloc(size_t size)
57 {
58 void *mem;
59
60 mem = xmalloc(size);
61 bzero(mem, size);
62
63 return (mem);
64 }
65
66 char *
xstrdup(const char * str)67 xstrdup(const char *str)
68 {
69 char *newstr;
70
71 if ((newstr = strdup(str)) == NULL)
72 memory_bailout();
73
74 return (newstr);
75 }
76
77 char *
xstrndup(char * str,size_t len)78 xstrndup(char *str, size_t len)
79 {
80 char *newstr;
81
82 if ((newstr = malloc(len + 1)) == NULL)
83 memory_bailout();
84
85 (void) strncpy(newstr, str, len);
86 newstr[len] = '\0';
87
88 return (newstr);
89 }
90
91 void *
xrealloc(void * ptr,size_t size)92 xrealloc(void *ptr, size_t size)
93 {
94 void *mem;
95
96 if ((mem = realloc(ptr, size)) == NULL)
97 memory_bailout();
98
99 return (mem);
100 }
101