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/** @file
*
* VirtualBox 3D common tooling
*/
/*
* Copyright (C) 2011 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.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef ___VBox_VBoxVideo3D_h
#define ___VBox_VBoxVideo3D_h
#include <iprt/cdefs.h>
#include <iprt/asm.h>
#ifndef VBoxTlsRefGetImpl
# ifdef VBoxTlsRefSetImpl
# error "VBoxTlsRefSetImpl is defined, unexpected!"
# endif
# include <iprt/thread.h>
# define VBoxTlsRefGetImpl(_tls) (RTTlsGet((RTTLS)(_tls)))
# define VBoxTlsRefSetImpl(_tls, _val) (RTTlsSet((RTTLS)(_tls), (_val)))
#else
# ifndef VBoxTlsRefSetImpl
# error "VBoxTlsRefSetImpl is NOT defined, unexpected!"
# endif
#endif
#ifndef VBoxTlsRefAssertImpl
# define VBoxTlsRefAssertImpl(_a) do {} while (0)
#endif
typedef DECLCALLBACK(void) FNVBOXTLSREFDTOR(void*);
typedef FNVBOXTLSREFDTOR *PFNVBOXTLSREFDTOR;
typedef enum {
VBOXTLSREFDATA_STATE_UNDEFINED = 0,
VBOXTLSREFDATA_STATE_INITIALIZED,
VBOXTLSREFDATA_STATE_TOBE_DESTROYED,
VBOXTLSREFDATA_STATE_DESTROYING,
VBOXTLSREFDATA_STATE_32BIT_HACK = 0x7fffffff
} VBOXTLSREFDATA_STATE;
#define VBOXTLSREFDATA \
volatile int32_t cTlsRefs; \
VBOXTLSREFDATA_STATE enmTlsRefState; \
PFNVBOXTLSREFDTOR pfnTlsRefDtor; \
struct VBOXTLSREFDATA_DUMMY
{
VBOXTLSREFDATA
};
#define VBOXTLSREFDATA_OFFSET(_t) RT_OFFSETOF(_t, cTlsRefs)
#define VBOXTLSREFDATA_SIZE() (sizeof (struct VBOXTLSREFDATA_DUMMY))
#define VBOXTLSREFDATA_COPY(_pDst, _pSrc) do { \
(_pDst)->cTlsRefs = (_pSrc)->cTlsRefs; \
(_pDst)->enmTlsRefState = (_pSrc)->enmTlsRefState; \
(_pDst)->pfnTlsRefDtor = (_pSrc)->pfnTlsRefDtor; \
} while (0)
#define VBOXTLSREFDATA_EQUAL(_pDst, _pSrc) ( \
(_pDst)->cTlsRefs == (_pSrc)->cTlsRefs \
&& (_pDst)->enmTlsRefState == (_pSrc)->enmTlsRefState \
&& (_pDst)->pfnTlsRefDtor == (_pSrc)->pfnTlsRefDtor \
)
#define VBoxTlsRefInit(_p, _pfnDtor) do { \
(_p)->cTlsRefs = 1; \
(_p)->enmTlsRefState = VBOXTLSREFDATA_STATE_INITIALIZED; \
(_p)->pfnTlsRefDtor = (_pfnDtor); \
} while (0)
#define VBoxTlsRefIsFunctional(_p) (!!((_p)->enmTlsRefState == VBOXTLSREFDATA_STATE_INITIALIZED))
#define VBoxTlsRefAddRef(_p) do { \
int cRefs = ASMAtomicIncS32(&(_p)->cTlsRefs); \
VBoxTlsRefAssertImpl(cRefs > 1 || (_p)->enmTlsRefState == VBOXTLSREFDATA_STATE_DESTROYING); \
} while (0)
#define VBoxTlsRefRelease(_p) do { \
int cRefs = ASMAtomicDecS32(&(_p)->cTlsRefs); \
VBoxTlsRefAssertImpl(cRefs >= 0); \
if (!cRefs && (_p)->enmTlsRefState != VBOXTLSREFDATA_STATE_DESTROYING /* <- avoid recursion if VBoxTlsRefAddRef/Release is called from dtor */) { \
(_p)->enmTlsRefState = VBOXTLSREFDATA_STATE_DESTROYING; \
(_p)->pfnTlsRefDtor((_p)); \
} \
} while (0)
#define VBoxTlsRefMarkDestroy(_p) do { \
(_p)->enmTlsRefState = VBOXTLSREFDATA_STATE_TOBE_DESTROYED; \
} while (0)
#define VBoxTlsRefGetCurrent(_t, _Tsd) ((_t*) VBoxTlsRefGetImpl((_Tsd)))
#define VBoxTlsRefSetCurrent(_t, _Tsd, _p) do { \
_t * oldCur = VBoxTlsRefGetCurrent(_t, _Tsd); \
if (oldCur != (_p)) { \
VBoxTlsRefSetImpl((_Tsd), (_p)); \
if (oldCur) { \
VBoxTlsRefRelease(oldCur); \
} \
if ((_p)) { \
VBoxTlsRefAddRef((_t*)(_p)); \
} \
} \
} while (0)
#endif /* #ifndef ___VBox_VBoxVideo3D_h */
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