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 #include "memory.h"
39
40 static void
memory_bailout(void)41 memory_bailout(void)
42 {
43 (void) fprintf(stderr, "Out of memory\n");
44 exit(1);
45 }
46
47 void *
xmalloc(size_t size)48 xmalloc(size_t size)
49 {
50 void *mem;
51
52 if ((mem = malloc(size)) == NULL)
53 memory_bailout();
54
55 return (mem);
56 }
57
58 void *
xcalloc(size_t size)59 xcalloc(size_t size)
60 {
61 void *mem;
62
63 mem = xmalloc(size);
64 bzero(mem, size);
65
66 return (mem);
67 }
68
69 char *
xstrdup(const char * str)70 xstrdup(const char *str)
71 {
72 char *newstr;
73
74 if ((newstr = strdup(str)) == NULL)
75 memory_bailout();
76
77 return (newstr);
78 }
79
80 char *
xstrndup(char * str,size_t len)81 xstrndup(char *str, size_t len)
82 {
83 char *newstr;
84
85 if ((newstr = malloc(len + 1)) == NULL)
86 memory_bailout();
87
88 (void) strncpy(newstr, str, len);
89 newstr[len] = '\0';
90
91 return (newstr);
92 }
93
94 void *
xrealloc(void * ptr,size_t size)95 xrealloc(void *ptr, size_t size)
96 {
97 void *mem;
98
99 if ((mem = realloc(ptr, size)) == NULL)
100 memory_bailout();
101
102 return (mem);
103 }
104