hkStructureLayout.h
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- /*
- *
- * Confidential Information of Telekinesys Research Limited (t/a Havok). Not for disclosure or distribution without Havok's
- * prior written consent. This software contains code, techniques and know-how which is confidential and proprietary to Havok.
- * Level 2 and Level 3 source code contains trade secrets of Havok. Havok Software (C) Copyright 1999-2009 Telekinesys Research Limited t/a Havok. All Rights Reserved. Use of this software is subject to the terms of an end user license agreement.
- *
- */
- #ifndef HK_SERIALIZE_STRUCTURELAYOUT_H
- #define HK_SERIALIZE_STRUCTURELAYOUT_H
- class hkClassMember;
- template <typename K, typename V> class hkPointerMap;
- /// Class which can duplicate the compiler structure layout procedure.
- class hkStructureLayout
- {
- public:
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR(HK_MEMORY_CLASS_SERIALIZE, hkStructureLayout);
- /// Structure to define how the compiler lays out struct members.
- struct LayoutRules
- {
- /// Number of bytes in a pointer. i.e. sizeof(void*)
- /// Valid values are 4 or 8.
- hkUint8 m_bytesInPointer;
- /// Target is little endian.
- /// e.g. True for PlayStation(R)2. False for powerpc.
- hkUint8 m_littleEndian;
- /// Derived members appear after alignment padding.
- /// e.g. struct A { hkVector4 x; int i; };
- /// struct B : public A { int j; };
- /// All compilers have sizeof(A)==2*sizeof(hkVector4)
- /// because of the alignment padding. Some compilers simply
- /// append members to the base class so that offsetof(B,j)==sizeof(A)
- /// Others can reuse the padding for derived classes so that
- /// sizeof(B)==sizeof(A) and offsetof(B,j)==offsetof(B,i)+sizeof(int)
- /// e.g. True for all gcc based compilers except on OsX, false for msvc and cw.
- hkUint8 m_reusePaddingOptimization;
- /// The target implements the empty base class optimization.
- /// e.g. struct A {}; struct B : public A { int x; };
- /// All compilers have sizeof(A) > 0. Some compilers reuse the padding
- /// for derived class members such that offsetof(B,x) == 0.
- /// e.g. gcc2 does not implement this optimization.
- hkUint8 m_emptyBaseClassOptimization;
- hkBool operator==(const LayoutRules& other) const
- {
- return (m_bytesInPointer == other.m_bytesInPointer) &&
- (m_littleEndian == other.m_littleEndian) &&
- (m_reusePaddingOptimization == other.m_reusePaddingOptimization) &&
- (m_emptyBaseClassOptimization == other.m_emptyBaseClassOptimization);
- }
- private:
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_SERIALIZE, hkStructureLayout::LayoutRules );
- };
- /// Create a structure layout with the host layout rules.
- hkStructureLayout();
-
- /// Create a structure layout with the given layout rules.
- hkStructureLayout( const LayoutRules& rules );
- /// Compute the offsets of the members of klass according to the target rules.
- /// The offsets are written into the supplied class. The read-write parameter
- /// classesDone keeps track of which classes have been processed so far. This
- /// may persist across several calls.
- void computeMemberOffsetsInplace( hkClass& klass, hkPointerMap<const hkClass*, int>& classesDone ) const;
- /// Access the rules of this layout.
- const LayoutRules& getRules() const { return m_rules; }
- /// The layout rules for the platform being compiled.
- static const LayoutRules HostLayoutRules;
- // Layout for various compilers/platforms.
- // If no rules match your particular compiler/host combination, you
- // can create your own by examining HostLayoutRules on the target.
- /// MSVC Win32
- static const LayoutRules MsvcWin32LayoutRules;
- /// The original xbox. See also Xbox360LayoutRules.
- static const LayoutRules MsvcXboxLayoutRules;
- /// MSVC AMD64
- static const LayoutRules MsvcAmd64LayoutRules;
- /// CodeWarrior PlayStation(R)2
- static const LayoutRules CwPs2LayoutRules;
- /// CodeWarrior Nintendo GameCube
- static const LayoutRules CwNgcLayoutRules;
- /// CodeWarrior PSP(R) (PlayStation(R)Portable)
- static const LayoutRules CwPspLayoutRules;
- /// CodeWarrior Wii
- static const LayoutRules CwWiiLayoutRules;
- /// GCC 3.2 PlayStation(R)2
- static const LayoutRules Gcc32Ps2LayoutRules;
- /// GCC 1.51 PSP(R)
- static const LayoutRules Gcc151PspLayoutRules;
- /// GCC 2.95 Linux
- static const LayoutRules Gcc295LinuxLayoutRules;
- /// GCC 3.3 Linux
- static const LayoutRules Gcc33LinuxLayoutRules;
- /// SN 3.1 PlayStation(R)2
- static const LayoutRules Sn31Ps2LayoutRules;
- /// SN 1.0 PSP(R)
- static const LayoutRules Sn10PspLayoutRules;
- /// SN 3.93 Nintendo GameCube
- static const LayoutRules Sn393NgcLayoutRules;
- /// Xbox 360
- static const LayoutRules Xbox360LayoutRules;
- /// GCC PLAYSTATION(R)3
- static const LayoutRules GccPs3LayoutRules;
- /// GCC 4.0 Mac-PPC
- static const LayoutRules Gcc40MacPpcLayoutRules;
- /// GCC 4.0 Mac-Intel
- static const LayoutRules Gcc40MacIntelLayoutRules;
- protected:
- LayoutRules m_rules;
- };
- #endif // HK_SERIALIZE_STRUCTURELAYOUT_H
- /*
- * Havok SDK - NO SOURCE PC DOWNLOAD, BUILD(#20090216)
- *
- * Confidential Information of Havok. (C) Copyright 1999-2009
- * Telekinesys Research Limited t/a Havok. All Rights Reserved. The Havok
- * Logo, and the Havok buzzsaw logo are trademarks of Havok. Title, ownership
- * rights, and intellectual property rights in the Havok software remain in
- * Havok and/or its suppliers.
- *
- * Use of this software for evaluation purposes is subject to and indicates
- * acceptance of the End User licence Agreement for this product. A copy of
- * the license is included with this software and is also available at www.havok.com/tryhavok.
- *
- */