hkLocalArray.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 HKBASE_HKLOCALARRAY_H
- #define HKBASE_HKLOCALARRAY_H
- /// A array class which uses hkMemory stack based allocations.
- /// Stack allocation patterns can be much faster than heap allocations.
- /// See the hkMemory/Frame based allocation user guide section.
- /// When an hkLocalArray grows beyond its original specified capacity, it
- /// falls back on heap allocations so it is important to specify a good
- /// initial capacity.
- /// hkLocalArray should almost always be a local variable in a
- /// method and almost never a member of an object.
- template <typename T>
- class hkLocalArray : public hkArray<T>
- {
- public:
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR(HK_MEMORY_CLASS_ARRAY, hkLocalArray<T>);
- /// Create an array with zero size and given capacity.
- /// For maximum efficiency, the arrays capacity should never grow
- /// beyond the specified capacity. If it does, the array falls back
- /// to using heap allocations which is safe, but the speed advantage
- /// of using the stack based allocation methods is lost.
- HK_FORCE_INLINE hkLocalArray( int capacity )
- {
- this->m_data = hkAllocateStack<T>(capacity);
- this->m_capacityAndFlags = capacity | hkArray<T>::DONT_DEALLOCATE_FLAG;
- m_localMemory = this->m_data;
- }
- /// Discard the current contents and resize to the given size. Memory is uninitialised.
- HK_FORCE_INLINE void discardAndResize(int newsize)
- {
- HK_ASSERT2(0x2cd92d9d, m_localMemory == this->m_data, "You cannot call discardAndResize on a localarray that has grown beyond its original specified capacity.");
- hkDeallocateStack<T>( m_localMemory );
- m_localMemory = this->m_data = hkAllocateStack<T>(newsize);
- this->m_size = newsize;
- this->m_capacityAndFlags = newsize | hkArray<T>::DONT_DEALLOCATE_FLAG;
- }
- void assertNotResized()
- {
- HK_ASSERT2(0x5f792e08, m_localMemory == this->m_data, "A localarray grew beyond its original specified capacity.");
- }
- hkBool wasReallocated() const
- {
- return m_localMemory != this->m_data;
- }
- /// Destroy the array.
- HK_FORCE_INLINE ~hkLocalArray()
- {
- hkDeallocateStack<T>( m_localMemory );
- }
- T* m_localMemory;
- };
- #endif // HKBASE_HKLOCALARRAY_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.
- *
- */