make_malloc.c revision 1.23 
1/*	$NetBSD: make_malloc.c,v 1.23 2020/10/05 19:27:47 rillig 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#include <errno.h>
30
31#include "make.h"
32
33MAKE_RCSID("$NetBSD: make_malloc.c,v 1.23 2020/10/05 19:27:47 rillig Exp $");
34
35#ifndef USE_EMALLOC
36
37/* die when out of memory. */
38static MAKE_ATTR_DEAD void
39enomem(void)
40{
41	(void)fprintf(stderr, "%s: %s.\n", progname, strerror(ENOMEM));
42	exit(2);
43}
44
45/* malloc, but die on error. */
46void *
47bmake_malloc(size_t len)
48{
49	void *p;
50
51	if ((p = malloc(len)) == NULL)
52		enomem();
53	return p;
54}
55
56/* strdup, but die on error. */
57char *
58bmake_strdup(const char *str)
59{
60	size_t len;
61	char *p;
62
63	len = strlen(str) + 1;
64	if ((p = malloc(len)) == NULL)
65		enomem();
66	return memcpy(p, str, len);
67}
68
69/* Allocate a string starting from str with exactly len characters. */
70char *
71bmake_strldup(const char *str, size_t len)
72{
73	char *p = bmake_malloc(len + 1);
74	memcpy(p, str, len);
75	p[len] = '\0';
76	return p;
77}
78
79/* realloc, but die on error. */
80void *
81bmake_realloc(void *ptr, size_t size)
82{
83	if ((ptr = realloc(ptr, size)) == NULL)
84		enomem();
85	return ptr;
86}
87#endif
88
89/* Allocate a string from start up to but excluding end. */
90char *
91bmake_strsedup(const char *start, const char *end)
92{
93	return bmake_strldup(start, (size_t)(end - start));
94}
95