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/* alloc.c -- memory allocation
This file is part of the UCL data compression library.
Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
The UCL library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
The UCL 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with the UCL library; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/opensource/ucl/
*/
#include "ucl_conf.h"
/***********************************************************************
// implementation
************************************************************************/
#if defined(__UCL_MMODEL_HUGE)
#define acc_hsize_t ucl_uint
#define acc_hvoid_p ucl_voidp
#define ACCLIB_PUBLIC(r,f) static r __UCL_CDECL f
#define acc_halloc ucl_malloc_internal
#define acc_hfree ucl_free_internal
#include "acc/acclib/halloc.ch"
#undef ACCLIB_PUBLIC
#else
UCL_PRIVATE(ucl_voidp)
ucl_malloc_internal(ucl_uint size)
{
ucl_voidp p = NULL;
if (size < ~(size_t)0)
p = (ucl_voidp) malloc((size_t) size);
return p;
}
UCL_PRIVATE(void)
ucl_free_internal(ucl_voidp p)
{
if (p)
free(p);
}
#endif
/***********************************************************************
// public interface using the global hooks
************************************************************************/
/* global allocator hooks */
static ucl_malloc_hook_t ucl_malloc_hook = ucl_malloc_internal;
static ucl_free_hook_t ucl_free_hook = ucl_free_internal;
UCL_PUBLIC(void)
ucl_set_malloc_hooks(ucl_malloc_hook_t a, ucl_free_hook_t f)
{
ucl_malloc_hook = ucl_malloc_internal;
ucl_free_hook = ucl_free_internal;
if (a)
ucl_malloc_hook = a;
if (f)
ucl_free_hook = f;
}
UCL_PUBLIC(void)
ucl_get_malloc_hooks(ucl_malloc_hook_t* a, ucl_free_hook_t* f)
{
if (a)
*a = ucl_malloc_hook;
if (f)
*f = ucl_free_hook;
}
UCL_PUBLIC(ucl_voidp)
ucl_malloc(ucl_uint size)
{
if (size <= 0)
return NULL;
return ucl_malloc_hook(size);
}
UCL_PUBLIC(ucl_voidp)
ucl_alloc(ucl_uint nelems, ucl_uint size)
{
ucl_uint s = nelems * size;
if (nelems <= 0 || s / nelems != size)
return NULL;
return ucl_malloc(s);
}
UCL_PUBLIC(void)
ucl_free(ucl_voidp p)
{
if (p)
ucl_free_hook(p);
}
/*
vi:ts=4:et
*/
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