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/* $Id$ */
/** @file
*
* VBox extension to Wine D3D - shared resource
*
* Copyright (C) 2010-2012 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 ___vboxsharedrc_h___
#define ___vboxsharedrc_h___
#define VBOXSHRC_F_SHARED 0x00000001 /* shared rc */
#define VBOXSHRC_F_SHARED_OPENED 0x00000002 /* if set shared rc is opened, otherwise it is created */
#define VBOXSHRC_GET_SHAREFLAFS(_o) ((_o)->resource.sharerc_flags)
#define VBOXSHRC_GET_SHAREHANDLE(_o) ((HANDLE)(_o)->resource.sharerc_handle)
#define VBOXSHRC_SET_SHAREHANDLE(_o, _h) ((_o)->resource.sharerc_handle = (DWORD)(_h))
#define VBOXSHRC_COPY_SHAREDATA(_oDst, _oSrc) do { \
VBOXSHRC_GET_SHAREFLAFS(_oDst) = VBOXSHRC_GET_SHAREFLAFS(_oSrc); \
VBOXSHRC_SET_SHAREHANDLE(_oDst, VBOXSHRC_GET_SHAREHANDLE(_oSrc)); \
} while (0)
#define VBOXSHRC_SET_SHARED(_o) (VBOXSHRC_GET_SHAREFLAFS(_o) |= VBOXSHRC_F_SHARED)
#define VBOXSHRC_SET_SHARED_OPENED(_o) (VBOXSHRC_GET_SHAREFLAFS(_o) |= VBOXSHRC_F_SHARED_OPENED)
#define VBOXSHRC_IS_SHARED(_o) (!!(VBOXSHRC_GET_SHAREFLAFS(_o) & VBOXSHRC_F_SHARED))
#define VBOXSHRC_IS_SHARED_OPENED(_o) (!!(VBOXSHRC_GET_SHAREFLAFS(_o) & VBOXSHRC_F_SHARED_OPENED))
#define VBOXSHRC_IS_SHARED_UNLOCKED(_o) (VBOXSHRC_IS_SHARED(_o) && !VBOXSHRC_IS_LOCKED(_o))
#define VBOXSHRC_LOCK(_o) do{ \
Assert(VBOXSHRC_IS_SHARED(_o)); \
++(_o)->resource.sharerc_locks; \
} while (0)
#define VBOXSHRC_UNLOCK(_o) do{ \
Assert(VBOXSHRC_IS_SHARED(_o)); \
--(_o)->resource.sharerc_locks; \
Assert((_o)->resource.sharerc_locks < UINT32_MAX/2); \
} while (0)
#define VBOXSHRC_IS_LOCKED(_o) ( \
!!((_o)->resource.sharerc_locks) \
)
#endif /* #ifndef ___vboxsharedrc_h___ */
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