root/MMgc/HeapGraph.h

INCLUDED FROM

/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is [Open Source Virtual Machine.].
 *
 * The Initial Developer of the Original Code is
 * Adobe System Incorporated.
 * Portions created by the Initial Developer are Copyright (C) 2004-2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Adobe AS3 Team
 *   leon.sha@sun.com
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef __MMGC_HEAP_GRAPH__
#define __MMGC_HEAP_GRAPH__

#ifndef MMGC_HEAP_GRAPH

#define MMGC_WB_EDGE(_a, _v) 

#else

#define MMGC_WB_EDGE(_a, _v) {if(GCHeap::GetGCHeap()->config.dumpFalsePositives) mutatorGraph.edge(_a, _v); }

namespace MMgc
{
        /**
           HeapGraph represents the edges in the GC heap.  
        */
        class HeapGraph
        {
        public:
                HeapGraph() {}
                ~HeapGraph() { clear(); }

                // this is called before the mutation takes place
                void edge(const void *addr, const void *newValue);
                GCHashtable *getPointers(const void *obj);
                void clear();
        private:
                // key = addr, value = container
                GCHashtable_VMPI backEdges;
        };
}
#endif // MMGC_HEAP_GRAPH

#endif /* __MMGC_HEAP_GRAPH__ */