118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/*
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* This source code may contain confidential information of QNX Software
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* Systems Ltd. (QSSL) and its licensors. Any use, reproduction,
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* modification, disclosure, distribution or transfer of this software,
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* or any software which includes or is based upon any of this code, is
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* prohibited unless expressly authorized by QSSL by written agreement. For
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* more information (including whether this source code file has been
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* published) please email licensing@qnx.com.
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*/
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/* alloc.c -- memory allocation
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This file is part of the UCL real-time data compression library.
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Copyright (C) 1996-2000 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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http://wildsau.idv.uni-linz.ac.at/mfx/ucl.html
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*/
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#include "ucl_conf.h"
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#undef ucl_alloc_hook
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#undef ucl_free_hook
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#undef ucl_alloc
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#undef ucl_malloc
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#undef ucl_free
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/* global allocator hooks */
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ucl_alloc_hook_t ucl_alloc_hook = ucl_alloc;
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ucl_free_hook_t ucl_free_hook = ucl_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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UCL_PUBLIC(ucl_voidp)
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ucl_alloc(ucl_uint nelems, ucl_uint size)
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{
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ucl_voidp 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 = (ucl_voidp) MemPtrNew(s);
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#elif (UCL_UINT_MAX <= SIZE_T_MAX)
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if (s < SIZE_T_MAX)
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p = (ucl_voidp) 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 = (ucl_voidp) halloc(nelems,(size_t)size);
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#else
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if (s < SIZE_T_MAX)
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p = (ucl_voidp) malloc((size_t)s);
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#endif
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return p;
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}
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UCL_PUBLIC(ucl_voidp)
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ucl_malloc(ucl_uint size)
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{
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if (!ucl_alloc_hook)
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return NULL;
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#if defined(__palmos__)
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return ucl_alloc_hook(size,1);
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#elif (UCL_UINT_MAX <= SIZE_T_MAX)
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return ucl_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 ucl_alloc_hook((size+15)/16,16);
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#else
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return ucl_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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UCL_PUBLIC(void)
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ucl_free(ucl_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 (UCL_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:et
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*/
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