memory.c revision 178529 
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
39static void
40memory_bailout(void)
41{
42	(void) fprintf(stderr, "Out of memory\n");
43	exit(1);
44}
45
46void *
47xmalloc(size_t size)
48{
49	void *mem;
50
51	if ((mem = malloc(size)) == NULL)
52		memory_bailout();
53
54	return (mem);
55}
56
57void *
58xcalloc(size_t size)
59{
60	void *mem;
61
62	mem = xmalloc(size);
63	bzero(mem, size);
64
65	return (mem);
66}
67
68char *
69xstrdup(const char *str)
70{
71	char *newstr;
72
73	if ((newstr = strdup(str)) == NULL)
74		memory_bailout();
75
76	return (newstr);
77}
78
79char *
80xstrndup(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
93void *
94xrealloc(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