mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* Copyright (C) 1991-2013 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _MALLOC_INTERNAL
|
|
#define _MALLOC_INTERNAL
|
|
#include <malloc.h>
|
|
#endif
|
|
|
|
#ifndef __GNU_LIBRARY__
|
|
#define __sbrk sbrk
|
|
#endif
|
|
|
|
#ifdef __GNU_LIBRARY__
|
|
/* It is best not to declare this and cast its result on foreign operating
|
|
systems with potentially hostile include files. */
|
|
|
|
#include <stddef.h>
|
|
#include <stdlib.h>
|
|
extern void *__sbrk (ptrdiff_t increment) __THROW;
|
|
libc_hidden_proto (__sbrk)
|
|
#endif
|
|
|
|
#ifndef NULL
|
|
#define NULL 0
|
|
#endif
|
|
|
|
/* Allocate INCREMENT more bytes of data space,
|
|
and return the start of data space, or NULL on errors.
|
|
If INCREMENT is negative, shrink data space. */
|
|
void *
|
|
__default_morecore (ptrdiff_t increment)
|
|
{
|
|
void *result = (void *) __sbrk (increment);
|
|
if (result == (void *) -1)
|
|
return NULL;
|
|
return result;
|
|
}
|
|
libc_hidden_def (__default_morecore)
|