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// -*- c-basic-offset: 2 -*-
/*
* This file is part of the KDE libraries
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2003 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef _KJSCOLLECTOR_H_
#define _KJSCOLLECTOR_H_
#include "value.h"
#define KJS_MEM_LIMIT 500000
namespace KJS {
/**
* @short Garbage collector.
*/
class Collector {
// disallow direct construction/destruction
Collector();
public:
/**
* Register an object with the collector. The following assumptions are
* made:
* @li the operator new() of the object class is overloaded.
* @li operator delete() has been overloaded as well and does not free
* the memory on its own.
*
* @param s Size of the memory to be registered.
* @return A pointer to the allocated memory.
*/
static void* allocate(size_t s);
/**
* Run the garbage collection. This involves calling the delete operator
* on each object and freeing the used memory.
*/
static bool collect();
static int size();
static bool outOfMemory() { return memoryFull; }
#ifdef KJS_DEBUG_MEM
/**
* Check that nothing is left when the last interpreter gets deleted
*/
static void finalCheck();
#endif
#if APPLE_CHANGES
static int numInterpreters();
static int numGCNotAllowedObjects();
static int numReferencedObjects();
static const void *rootObjectClasses(); // actually returns CFSetRef
#endif
#if TEST_CONSERVATIVE_GC | USE_CONSERVATIVE_GC
class Thread;
static void registerThread();
#endif
private:
#if TEST_CONSERVATIVE_GC | USE_CONSERVATIVE_GC
static void markProtectedObjects();
static void markCurrentThreadConservatively();
static void markOtherThreadConservatively(Thread *thread);
static void markStackObjectsConservatively();
static void markStackObjectsConservatively(void *start, void *end);
#endif
static bool memoryFull;
};
};
#endif /* _KJSCOLLECTOR_H_ */
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