make_malloc.c revision 1.16
1/* $NetBSD: make_malloc.c,v 1.16 2020/08/29 11:24:54 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#ifdef MAKE_NATIVE 30#include <sys/cdefs.h> 31__RCSID("$NetBSD: make_malloc.c,v 1.16 2020/08/29 11:24:54 rillig 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 41#ifndef USE_EMALLOC 42static MAKE_ATTR_DEAD void enomem(void); 43 44/* 45 * enomem -- 46 * die when out of memory. 47 */ 48static MAKE_ATTR_DEAD void 49enomem(void) 50{ 51 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(ENOMEM)); 52 exit(2); 53} 54 55/* 56 * bmake_malloc -- 57 * malloc, but die on error. 58 */ 59void * 60bmake_malloc(size_t len) 61{ 62 void *p; 63 64 if ((p = malloc(len)) == NULL) 65 enomem(); 66 return p; 67} 68 69/* 70 * bmake_strdup -- 71 * strdup, but die on error. 72 */ 73char * 74bmake_strdup(const char *str) 75{ 76 size_t len; 77 char *p; 78 79 len = strlen(str) + 1; 80 if ((p = malloc(len)) == NULL) 81 enomem(); 82 return memcpy(p, str, len); 83} 84 85/* Allocate a string starting from str with exactly len characters. */ 86char * 87bmake_strldup(const char *str, size_t len) 88{ 89 char *p = bmake_malloc(len + 1); 90 memcpy(p, str, len); 91 p[len] = '\0'; 92 return p; 93} 94 95/* Allocate a string from start up to but excluding end. */ 96char * 97bmake_strsedup(const char *start, const char *end) 98{ 99 return bmake_strldup(start, (size_t)(end - start)); 100} 101 102/* 103 * bmake_realloc -- 104 * realloc, but die on error. 105 */ 106void * 107bmake_realloc(void *ptr, size_t size) 108{ 109 if ((ptr = realloc(ptr, size)) == NULL) 110 enomem(); 111 return ptr; 112} 113#endif 114