make_malloc.c revision 1.9 
1/*	$NetBSD: make_malloc.c,v 1.9 2012/06/12 19:21:51 joerg Exp $	*/
2
3/*-
4 * Copyright (c) 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifdef MAKE_NATIVE
30#include <sys/cdefs.h>
31__RCSID("$NetBSD: make_malloc.c,v 1.9 2012/06/12 19:21:51 joerg Exp $");
32#endif
33
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37#include <errno.h>
38
39#include "make.h"
40#include "make_malloc.h"
41
42#ifndef USE_EMALLOC
43static void enomem(void) MAKE_ATTR_DEAD;
44
45/*
46 * enomem --
47 *	die when out of memory.
48 */
49extern char *progname;
50
51static void
52enomem(void)
53{
54	(void)fprintf(stderr, "%s: %s.\n", progname, strerror(ENOMEM));
55	exit(2);
56}
57
58/*
59 * bmake_malloc --
60 *	malloc, but die on error.
61 */
62void *
63bmake_malloc(size_t len)
64{
65	void *p;
66
67	if ((p = malloc(len)) == NULL)
68		enomem();
69	return(p);
70}
71
72/*
73 * bmake_strdup --
74 *	strdup, but die on error.
75 */
76char *
77bmake_strdup(const char *str)
78{
79	size_t len;
80	char *p;
81
82	len = strlen(str) + 1;
83	if ((p = malloc(len)) == NULL)
84		enomem();
85	return memcpy(p, str, len);
86}
87
88/*
89 * bmake_strndup --
90 *	strndup, but die on error.
91 */
92char *
93bmake_strndup(const char *str, size_t max_len)
94{
95	size_t len;
96	char *p;
97
98	if (str == NULL)
99		return NULL;
100
101	len = strlen(str);
102	if (len > max_len)
103		len = max_len;
104	p = bmake_malloc(len + 1);
105	memcpy(p, str, len);
106	p[len] = '\0';
107
108	return(p);
109}
110
111/*
112 * bmake_realloc --
113 *	realloc, but die on error.
114 */
115void *
116bmake_realloc(void *ptr, size_t size)
117{
118	if ((ptr = realloc(ptr, size)) == NULL)
119		enomem();
120	return(ptr);
121}
122#endif
123