/*
 * Copyright 2006-2008, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Axel Dörfler, axeld@pinc-software.de
 */
#ifndef AREA_KEEPER_H
#define AREA_KEEPER_H


#include <KernelExport.h>
#include <OS.h>

#include <util/kernel_cpp.h>


class AreaKeeper {
        public:
                AreaKeeper();
                ~AreaKeeper();

                area_id Create(const char *name, void **_virtualAddress, uint32 spec,
                        size_t size, uint32 lock, uint32 protection);
                area_id Map(const char *name, phys_addr_t physicalAddress,
                        size_t numBytes, uint32 spec, uint32 protection,
                        void **_virtualAddress);

                status_t InitCheck() { return fArea < B_OK ? (status_t)fArea : B_OK; }
                void Detach();

        private:
                area_id fArea;
};


AreaKeeper::AreaKeeper()
        :
        fArea(-1)
{
}


AreaKeeper::~AreaKeeper()
{
        if (fArea >= B_OK)
                delete_area(fArea);
}


area_id
AreaKeeper::Create(const char *name, void **_virtualAddress, uint32 spec,
        size_t size, uint32 lock, uint32 protection)
{
        fArea = create_area(name, _virtualAddress, spec, size, lock, protection);
        return fArea;
}


area_id
AreaKeeper::Map(const char *name, phys_addr_t physicalAddress, size_t numBytes,
        uint32 spec, uint32 protection, void **_virtualAddress)
{
        fArea = map_physical_memory(name, physicalAddress, numBytes, spec,
                protection, _virtualAddress);
        return fArea;
}


void
AreaKeeper::Detach()
{
        fArea = -1;
}

#endif  // AREA_KEEPER_H