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/** @file
*
* HGCMObjects - Host-Guest Communication Manager objects header.
*/
/*
* Copyright (C) 2006-2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#ifndef __HGCMOBJECTS__H
#define __HGCMOBJECTS__H
#define LOG_GROUP_MAIN_OVERRIDE LOG_GROUP_HGCM
#include "Logging.h"
#include <iprt/assert.h>
#include <iprt/avl.h>
#include <iprt/critsect.h>
#include <iprt/asm.h>
class HGCMObject;
typedef struct _ObjectAVLCore
{
AVLULNODECORE AvlCore;
HGCMObject *pSelf;
} ObjectAVLCore;
typedef enum
{
HGCMOBJ_CLIENT,
HGCMOBJ_THREAD,
HGCMOBJ_MSG,
HGCMOBJ_SizeHack = 0x7fffffff
} HGCMOBJ_TYPE;
class HGCMObject
{
private:
friend uint32_t hgcmObjMake(HGCMObject *pObject, uint32_t u32HandleIn);
int32_t volatile m_cRefs;
HGCMOBJ_TYPE m_enmObjType;
ObjectAVLCore m_core;
protected:
virtual ~HGCMObject()
{};
public:
HGCMObject(HGCMOBJ_TYPE enmObjType)
: m_cRefs(0)
{
this->m_enmObjType = enmObjType;
};
void Reference()
{
int32_t refCnt = ASMAtomicIncS32(&m_cRefs);
NOREF(refCnt);
Log(("Reference: refCnt = %d\n", refCnt));
}
void Dereference()
{
int32_t refCnt = ASMAtomicDecS32(&m_cRefs);
Log(("Dereference: refCnt = %d\n", refCnt));
AssertRelease(refCnt >= 0);
if (refCnt)
{
return;
}
delete this;
}
uint32_t Handle()
{
return m_core.AvlCore.Key;
};
HGCMOBJ_TYPE Type()
{
return m_enmObjType;
};
};
int hgcmObjInit();
void hgcmObjUninit();
uint32_t hgcmObjGenerateHandle(HGCMObject *pObject);
uint32_t hgcmObjAssignHandle(HGCMObject *pObject, uint32_t u32Handle);
void hgcmObjDeleteHandle(uint32_t handle);
HGCMObject *hgcmObjReference(uint32_t handle, HGCMOBJ_TYPE enmObjType);
void hgcmObjDereference(HGCMObject *pObject);
uint32_t hgcmObjQueryHandleCount();
void hgcmObjSetHandleCount(uint32_t u32HandleCount);
#endif /* __HGCMOBJECTS__H */
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