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
41 memory_bailout(void)
42 {
43 	(void) fprintf(stderr, "Out of memory\n");
44 	exit(1);
45 }
46 
47 void *
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 *
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 *
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 *
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 *
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