128 lines
2.8 KiB
C
128 lines
2.8 KiB
C
/*
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* $QNXtpLicenseC:
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* Copyright 2007, QNX Software Systems. All Rights Reserved.
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*
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* You must obtain a written license from and pay applicable license fees to QNX
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* Software Systems before you may reproduce, modify or distribute this software,
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* or any work that includes all or part of this software. Free development
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* licenses are available for evaluation and non-commercial purposes. For more
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* information visit http://licensing.qnx.com or email licensing@qnx.com.
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*
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* This file may contain contributions from others. Please review this entire
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* file for other proprietary rights or license notices, as well as the QNX
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* Development Suite License Guide at http://licensing.qnx.com/license-guide/
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* for other information.
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* $
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*/
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/* alloc.c -- memory allocation
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This file is part of the LZO real-time data compression library.
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Copyright (C) 1996-1999 Markus Franz Xaver Johannes Oberhumer
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Markus F.X.J. Oberhumer
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markus.oberhumer@jk.uni-linz.ac.at
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*/
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#include "lzo_conf.h"
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#undef lzo_alloc_hook
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#undef lzo_free_hook
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#undef lzo_alloc
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#undef lzo_malloc
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#undef lzo_free
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/* global allocator hooks */
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lzo_bytep (__LZO_ENTRY *lzo_alloc_hook)(lzo_uint,lzo_uint) = lzo_alloc;
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void (__LZO_ENTRY *lzo_free_hook)(lzo_voidp) = lzo_free;
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#if defined(HAVE_MALLOC_H)
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# include <malloc.h>
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#endif
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#if defined(__palmos__)
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# include <System/MemoryMgr.h>
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#endif
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/***********************************************************************
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//
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************************************************************************/
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LZO_PUBLIC(lzo_bytep)
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lzo_alloc(lzo_uint nelems, lzo_uint size)
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{
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lzo_bytep p = NULL;
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unsigned long s = (unsigned long) nelems * size;
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if (nelems <= 0 || size <= 0 || s < nelems || s < size)
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return NULL;
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#if defined(__palmos__)
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p = (lzo_bytep) MemPtrNew(s);
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#elif (LZO_UINT_MAX <= SIZE_T_MAX)
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if (s < SIZE_T_MAX)
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p = (lzo_bytep) malloc((size_t)s);
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#elif defined(HAVE_HALLOC)
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if (size < SIZE_T_MAX)
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p = (lzo_bytep) halloc(nelems,(size_t)size);
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#else
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if (s < SIZE_T_MAX)
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p = (lzo_bytep) malloc((size_t)s);
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#endif
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return p;
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}
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LZO_PUBLIC(lzo_bytep)
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lzo_malloc(lzo_uint size)
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{
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if (!lzo_alloc_hook)
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return NULL;
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#if defined(__palmos__)
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return lzo_alloc_hook(size,1);
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#elif (LZO_UINT_MAX <= SIZE_T_MAX)
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return lzo_alloc_hook(size,1);
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#elif defined(HAVE_HALLOC)
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/* use segment granularity by default */
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return lzo_alloc_hook((size+15)/16,16);
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#else
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return lzo_alloc_hook(size,1);
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#endif
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}
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/***********************************************************************
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//
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************************************************************************/
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LZO_PUBLIC(void)
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lzo_free(lzo_voidp p)
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{
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if (!p)
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return;
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#if defined(__palmos__)
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MemPtrFree(p);
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#elif (LZO_UINT_MAX <= SIZE_T_MAX)
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free(p);
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#elif defined(HAVE_HALLOC)
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hfree(p);
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#else
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free(p);
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#endif
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}
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/*
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vi:ts=4
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*/
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