* 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
