114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/* $NetBSD: mem.c,v 1.19 2021/08/31 17:22:24 rillig Exp $ */
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/*
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* Copyright (c) 1994, 1995 Jochen Pohl
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* All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Jochen Pohl for
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* The NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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#if defined(__RCSID) && !defined(lint)
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__RCSID("$NetBSD: mem.c,v 1.19 2021/08/31 17:22:24 rillig Exp $");
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#endif
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "lint.h"
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#if defined(IS_LINT1) || defined(IS_LINT2)
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size_t
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mem_block_size(void)
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{
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unsigned int pagesize;
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pagesize = (unsigned int)getpagesize();
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return (MBLKSIZ + pagesize - 1) / pagesize * pagesize;
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}
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#endif
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static void *
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not_null(void *ptr)
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{
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if (ptr == NULL)
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errx(1, "virtual memory exhausted");
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return ptr;
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}
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void *
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xmalloc(size_t s)
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{
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return not_null(malloc(s));
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}
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void *
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xcalloc(size_t n, size_t s)
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{
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return not_null(calloc(n, s));
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}
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void *
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xrealloc(void *p, size_t s)
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{
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return not_null(realloc(p, s));
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}
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char *
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xstrdup(const char *s)
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{
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return not_null(strdup(s));
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}
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#if defined(IS_XLINT)
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char *
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xasprintf(const char *fmt, ...)
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{
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char *str;
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int e;
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va_list ap;
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va_start(ap, fmt);
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e = vasprintf(&str, fmt, ap);
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va_end(ap);
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if (e < 0)
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(void)not_null(NULL);
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return str;
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}
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#endif
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