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307 lines
8.0 KiB
307 lines
8.0 KiB
//C- -*- C++ -*-
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//C- -------------------------------------------------------------------
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//C- DjVuLibre-3.5
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//C- Copyright (c) 2002 Leon Bottou and Yann Le Cun.
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//C- Copyright (c) 2001 AT&T
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//C-
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//C- This software is subject to, and may be distributed under, the
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//C- GNU General Public License, Version 2. The license should have
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//C- accompanied the software or you may obtain a copy of the license
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//C- from the Free Software Foundation at http://www.fsf.org .
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//C-
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//C- This program is distributed in the hope that it will be useful,
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//C- but WITHOUT ANY WARRANTY; without even the implied warranty of
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//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//C- GNU General Public License for more details.
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//C-
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//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library
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//C- distributed by Lizardtech Software. On July 19th 2002, Lizardtech
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//C- Software authorized us to replace the original DjVu(r) Reference
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//C- Library notice by the following text (see doc/lizard2002.djvu):
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//C-
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//C- ------------------------------------------------------------------
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//C- | DjVu (r) Reference Library (v. 3.5)
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//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.
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//C- | The DjVu Reference Library is protected by U.S. Pat. No.
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//C- | 6,058,214 and patents pending.
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//C- |
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//C- | This software is subject to, and may be distributed under, the
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//C- | GNU General Public License, Version 2. The license should have
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//C- | accompanied the software or you may obtain a copy of the license
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//C- | from the Free Software Foundation at http://www.fsf.org .
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//C- |
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//C- | The computer code originally released by LizardTech under this
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//C- | license and unmodified by other parties is deemed "the LIZARDTECH
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//C- | ORIGINAL CODE." Subject to any third party intellectual property
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//C- | claims, LizardTech grants recipient a worldwide, royalty-free,
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//C- | non-exclusive license to make, use, sell, or otherwise dispose of
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//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the
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//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU
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//C- | General Public License. This grant only confers the right to
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//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to
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//C- | the extent such infringement is reasonably necessary to enable
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//C- | recipient to make, have made, practice, sell, or otherwise dispose
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//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to
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//C- | any greater extent that may be necessary to utilize further
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//C- | modifications or combinations.
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//C- |
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//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY
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//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF
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//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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//C- +------------------------------------------------------------------
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//
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// $Id: DjVuGlobalMemory.cpp,v 1.6 2003/11/07 22:08:20 leonb Exp $
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// $Name: release_3_5_15 $
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#if NEED_GNUG_PRAGMAS
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# pragma implementation
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#endif
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#ifdef NEED_DJVU_MEMORY
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#ifndef NEED_DJVU_MEMORY_IMPLEMENTATION
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#define NEED_DJVU_MEMORY_IMPLEMENTATION
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#endif /* NEED_DJVU_MEMORY_IMPLEMENTATION */
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#include "DjVuGlobal.h"
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#include "GException.h"
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#include <stdlib.h>
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#include <string.h>
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#include "debug.h"
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#ifdef UNIX
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djvu_delete_callback *
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_djvu_delete_ptr=(djvu_delete_callback *)&(operator delete);
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djvu_delete_callback *
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_djvu_deleteArray_ptr=(djvu_delete_callback *)&(operator delete []);
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djvu_new_callback *
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_djvu_new_ptr=(djvu_new_callback *)&(operator new);
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djvu_new_callback *
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_djvu_newArray_ptr=(djvu_new_callback *)&(operator new []);
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#endif
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static djvu_delete_callback *_djvu_delete_handler = 0;
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static djvu_new_callback *_djvu_new_handler = 0;
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static djvu_delete_callback *deleteArray_handler = 0;
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static djvu_new_callback *newArray_handler = 0;
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static djvu_free_callback *_djvu_free_handler = 0;
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static djvu_realloc_callback *_djvu_realloc_handler = 0;
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static djvu_calloc_callback *_djvu_calloc_handler = 0;
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static djvu_malloc_callback *_djvu_malloc_handler = 0;
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int
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djvu_memoryObject_callback (
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djvu_delete_callback* delete_handler,
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djvu_new_callback* new_handler
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) {
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if(delete_handler && new_handler)
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{
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#ifdef UNIX
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_djvu_new_ptr=&_djvu_new;
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_djvu_delete_ptr=&_djvu_delete;
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#endif
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_djvu_delete_handler=delete_handler;
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_djvu_new_handler=new_handler;
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return 1;
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}else
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{
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#ifdef UNIX
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_djvu_new_ptr=(djvu_new_callback *)&(operator new);
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_djvu_delete_ptr=(djvu_delete_callback *)&(operator delete);
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#endif
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_djvu_delete_handler=0;
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_djvu_new_handler=0;
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return (delete_handler||new_handler)?0:1;
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}
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return 0;
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}
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int
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djvu_set_memory_callbacks
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(
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djvu_free_callback *free_handler,
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djvu_realloc_callback *realloc_handler,
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djvu_malloc_callback *malloc_handler,
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djvu_calloc_callback *calloc_handler
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)
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{
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if(free_handler && realloc_handler && malloc_handler)
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{
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#ifdef UNIX
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_djvu_new_ptr=(djvu_new_callback *)&_djvu_new;
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_djvu_delete_ptr=(djvu_delete_callback *)&_djvu_delete;
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#endif
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_djvu_new_handler=(djvu_new_callback *)malloc_handler;
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_djvu_delete_handler=(djvu_delete_callback *)free_handler;
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_djvu_malloc_handler=(djvu_malloc_callback *)malloc_handler;
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_djvu_free_handler=(djvu_free_callback *)free_handler;
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_djvu_realloc_handler=(djvu_realloc_callback *)realloc_handler;
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if(calloc_handler)
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{
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_djvu_calloc_handler=(djvu_calloc_callback *)&calloc_handler;
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}else
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{
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_djvu_calloc_handler=0;
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}
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return 1;
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}else
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{
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#ifdef UNIX
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_djvu_new_ptr=(djvu_new_callback *)&(operator new);
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_djvu_delete_ptr=(djvu_delete_callback *)&(operator delete);
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#endif
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_djvu_delete_handler=0;
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_djvu_new_handler=0;
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_djvu_malloc_handler=0;
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_djvu_free_handler=0;
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_djvu_realloc_handler=0;
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_djvu_calloc_handler=0;
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return !(_djvu_malloc_handler
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||_djvu_free_handler
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||_djvu_realloc_handler
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||_djvu_calloc_handler);
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}
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}
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DJVUAPI void *
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_djvu_new(size_t siz)
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{
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void *ptr;
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#ifndef UNIX
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if(_djvu_new_handler)
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{
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#endif
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if(!(ptr=(*_djvu_new_handler)(siz?siz:1)))
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{
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G_THROW( ERR_MSG("DjVuGlobalMemory.exhausted") );
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}
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#ifndef UNIX
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}else
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{
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ptr=::operator new(siz?siz:1);
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}
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#endif
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return ptr;
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}
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void
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_djvu_delete(void *addr)
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{
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if(addr)
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{
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if(_djvu_delete_handler)
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{
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(*_djvu_delete_handler)(addr);
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}else
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{
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operator delete(addr);
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}
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}
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}
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void *
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_djvu_newArray(size_t siz)
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{
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void *ptr;
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#ifndef UNIX
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if(newArray_handler)
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{
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#endif
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if(!(ptr=(*newArray_handler)(siz?siz:1)))
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{
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G_THROW( ERR_MSG("DjVuGlobalMemory.exhausted") );
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}
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#ifndef UNIX
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}else
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{
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ptr=::new unsigned char[siz?siz:1];
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}
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#endif
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return ptr;
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}
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void
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_djvu_deleteArray(void *addr)
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{
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if(addr)
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{
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if(deleteArray_handler)
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{
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(*deleteArray_handler)(addr);
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}else
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{
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#ifdef WIN32
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delete [] (addr) ;
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#else
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operator delete [] (addr);
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#endif
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}
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}
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}
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void *
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_djvu_malloc(size_t siz)
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{
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DEBUG_MSG("_djvu_malloc: siz="<<siz<<"\n");
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return _djvu_malloc_handler?(*_djvu_malloc_handler)(siz?siz:1):malloc(siz?siz:1);
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}
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void *
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_djvu_calloc(size_t siz, size_t items)
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{
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DEBUG_MSG("_djvu_calloc: siz="<<siz<<" items="<<items<<"\n");
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void *ptr;
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if( _djvu_calloc_handler )
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{
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ptr = (*_djvu_calloc_handler)(siz?siz:1, items?items:1);
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}else if( _djvu_malloc_handler )
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{
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if((ptr = (*_djvu_malloc_handler)((siz?siz:1)*(items?items:1)))&&siz&&items)
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{
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memset(ptr,0,siz*items);
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}
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}else
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{
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ptr = calloc(siz?siz:1, items?items:1);
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}
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return ptr;
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}
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void *
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_djvu_realloc(void* ptr, size_t siz)
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{
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DEBUG_MSG("_djvu_realloc: ptr="<<ptr<<" siz="<<siz<<"\n");
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void *newptr;
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if( _djvu_realloc_handler )
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{
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newptr = (*_djvu_realloc_handler)(ptr, siz);
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}else
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{
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newptr = realloc(ptr, siz?siz:1);
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}
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return newptr;
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}
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void
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_djvu_free(void *ptr)
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{
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DEBUG_MSG("_djvu_free: ptr="<<ptr<<"\n");
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if(ptr)
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{
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if( _djvu_free_handler )
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{
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(*_djvu_free_handler)(ptr);
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}else
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{
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free(ptr);
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}
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}
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}
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#endif
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