153 lines
3.4 KiB
C
153 lines
3.4 KiB
C
/* alloc.c -- memory allocation
|
|
|
|
This file is part of the LZO real-time data compression library.
|
|
|
|
Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
|
|
All Rights Reserved.
|
|
|
|
The LZO 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 LZO 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 LZO 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>
|
|
*/
|
|
|
|
#include "stdafx.h"
|
|
#include "lzo_conf.h"
|
|
#include <lzoutil.h>
|
|
|
|
#if defined(HAVE_MALLOC_H)
|
|
# include <malloc.h>
|
|
#endif
|
|
#if defined(__palmos__)
|
|
# include <System/MemoryMgr.h>
|
|
#endif
|
|
|
|
|
|
#undef lzo_alloc_hook
|
|
#undef lzo_free_hook
|
|
#undef lzo_alloc
|
|
#undef lzo_malloc
|
|
#undef lzo_free
|
|
|
|
|
|
/***********************************************************************
|
|
// implementation
|
|
************************************************************************/
|
|
|
|
LZO_PRIVATE(lzo_voidp)
|
|
lzo_alloc_internal(lzo_uint nelems, lzo_uint size)
|
|
{
|
|
lzo_voidp p = NULL;
|
|
unsigned long s = (unsigned long) nelems * size;
|
|
|
|
if (nelems <= 0 || size <= 0 || s < nelems || s < size)
|
|
return NULL;
|
|
|
|
#if defined(__palmos__)
|
|
p = (lzo_voidp) MemPtrNew(s);
|
|
#elif (LZO_UINT_MAX <= SIZE_T_MAX)
|
|
if (s < SIZE_T_MAX)
|
|
p = (lzo_voidp) malloc((size_t)s);
|
|
#elif defined(HAVE_HALLOC) && defined(__DMC__)
|
|
if (size < SIZE_T_MAX)
|
|
p = (lzo_voidp) _halloc(nelems,(size_t)size);
|
|
#elif defined(HAVE_HALLOC)
|
|
if (size < SIZE_T_MAX)
|
|
p = (lzo_voidp) halloc(nelems,(size_t)size);
|
|
#else
|
|
if (s < SIZE_T_MAX)
|
|
p = (lzo_voidp) malloc((size_t)s);
|
|
#endif
|
|
|
|
return p;
|
|
}
|
|
|
|
|
|
LZO_PRIVATE(void)
|
|
lzo_free_internal(lzo_voidp p)
|
|
{
|
|
if (!p)
|
|
return;
|
|
|
|
#if defined(__palmos__)
|
|
MemPtrFree(p);
|
|
#elif (LZO_UINT_MAX <= SIZE_T_MAX)
|
|
free(p);
|
|
#elif defined(HAVE_HALLOC) && defined(__DMC__)
|
|
_hfree(p);
|
|
#elif defined(HAVE_HALLOC)
|
|
hfree(p);
|
|
#else
|
|
free(p);
|
|
#endif
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
// public interface using the global hooks
|
|
************************************************************************/
|
|
|
|
/* global allocator hooks */
|
|
LZO_PUBLIC_VAR(lzo_alloc_hook_t) lzo_alloc_hook = lzo_alloc_internal;
|
|
LZO_PUBLIC_VAR(lzo_free_hook_t) lzo_free_hook = lzo_free_internal;
|
|
|
|
|
|
LZO_PUBLIC(lzo_voidp)
|
|
lzo_alloc(lzo_uint nelems, lzo_uint size)
|
|
{
|
|
if (!lzo_alloc_hook)
|
|
return NULL;
|
|
|
|
return lzo_alloc_hook(nelems,size);
|
|
}
|
|
|
|
|
|
LZO_PUBLIC(lzo_voidp)
|
|
lzo_malloc(lzo_uint size)
|
|
{
|
|
if (!lzo_alloc_hook)
|
|
return NULL;
|
|
|
|
#if defined(__palmos__)
|
|
return lzo_alloc_hook(size,1);
|
|
#elif (LZO_UINT_MAX <= SIZE_T_MAX)
|
|
return lzo_alloc_hook(size,1);
|
|
#elif defined(HAVE_HALLOC)
|
|
/* use segment granularity by default */
|
|
if (size + 15 > size) /* avoid overflow */
|
|
return lzo_alloc_hook((size+15)/16,16);
|
|
return lzo_alloc_hook(size,1);
|
|
#else
|
|
return lzo_alloc_hook(size,1);
|
|
#endif
|
|
}
|
|
|
|
|
|
LZO_PUBLIC(void)
|
|
lzo_free(lzo_voidp p)
|
|
{
|
|
if (!lzo_free_hook)
|
|
return;
|
|
|
|
lzo_free_hook(p);
|
|
}
|
|
|
|
|
|
/*
|
|
vi:ts=4:et
|
|
*/
|
|
//martysama0134's 2e58d0b8baeb072acdf3afc4a5d1999f
|