/** @file * * VirtualBox 3D common tooling */ /* * Copyright (C) 2011-2012 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. * * 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 #include #ifndef VBoxTlsRefGetImpl # ifdef VBoxTlsRefSetImpl # error "VBoxTlsRefSetImpl is defined, unexpected!" # endif # include # 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 VBoxTlsRefGetCurrentFunctional(_val, _t, _Tsd) do { \ _t * cur = VBoxTlsRefGetCurrent(_t, _Tsd); \ if (!cur || VBoxTlsRefIsFunctional(cur)) { \ (_val) = cur; \ } else { \ VBoxTlsRefSetCurrent(_t, _Tsd, NULL); \ (_val) = NULL; \ } \ } while (0) #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 */