1 files changed, 136 insertions, 0 deletions
diff --git a/include/VBox/VBoxVideo3D.h b/include/VBox/VBoxVideo3D.h
new file mode 100644
index 00000000..91c6e306
--- /dev/null
+++ b/include/VBox/VBoxVideo3D.h
@@ -0,0 +1,136 @@
+/** @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 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 */