hkSmallArray.h
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上传日期:2020-08-09
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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_HKSMALLARRAY_H
- #define HKBASE_HKSMALLARRAY_H
- /// A simple helper class to automatically add and remove references to classes
- template <typename TYPE>
- class hkRefPtr
- {
- public:
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_BASE, hkRefPtr<TYPE> );
- HK_FORCE_INLINE hkRefPtr()
- {
- m_pntr = HK_NULL;
- }
- hkRefPtr (hkFinishLoadedObjectFlag ) {}
- HK_FORCE_INLINE hkRefPtr(const hkRefPtr& rp)
- {
- if ( rp.m_pntr )
- {
- rp.m_pntr->addReference();
- }
- m_pntr = rp.m_pntr;
- }
- HK_FORCE_INLINE hkRefPtr(TYPE* e)
- {
- if ( e )
- {
- e->addReference();
- }
- m_pntr = e;
- }
- HK_FORCE_INLINE ~hkRefPtr()
- {
- if ( m_pntr )
- {
- m_pntr->removeReference();
- }
- m_pntr = HK_NULL;
- }
- HK_FORCE_INLINE void operator=(const hkRefPtr& rp)
- {
- if ( rp.m_pntr )
- {
- rp.m_pntr->addReference(); // add reference first to allow self-assignment
- }
- if ( m_pntr )
- {
- m_pntr->removeReference();
- }
- m_pntr = rp.m_pntr;
- }
- HK_FORCE_INLINE void operator=(TYPE* e)
- {
- if ( e )
- {
- e->addReference(); // add reference first to allow self-assignment
- }
- if ( m_pntr )
- {
- m_pntr->removeReference();
- }
- m_pntr = e;
- }
- HK_FORCE_INLINE TYPE* val() const
- {
- return m_pntr;
- }
- HK_FORCE_INLINE TYPE* operator->() const
- {
- return m_pntr;
- }
- HK_FORCE_INLINE void setAndDontIncrementRefCount( TYPE* e )
- {
- if ( m_pntr )
- {
- m_pntr->removeReference();
- }
- m_pntr = e;
- }
- HK_FORCE_INLINE operator TYPE*() const
- {
- return val();
- }
- private:
- TYPE* m_pntr;
- };
- #ifndef hkArrayAllocator
- # define hkArrayAllocator hkThreadMemory::getInstance()
- #endif
- /// Common functionality for all hkSmallArray types.
- /// These are out of line functions to avoid code bloat.
- namespace hkSmallArrayUtil
- {
- void HK_CALL _reserve(void*, int numElem, int sizeElem);
- void HK_CALL _reserveMore(void* array, int sizeElem);
- }
- /// A 14bit array.
- /// Note that, for performance reasons, order may not be preserved when deleting elements.<br>
- /// <br>
- template <typename T>
- class hkSmallArray
- {
- friend void HK_CALL hkSmallArrayUtil::_reserve(void*, int numElem, int sizeElem);
- friend void HK_CALL hkSmallArrayUtil::_reserveMore(void* array, int sizeElem);
- public:
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR(HK_MEMORY_CLASS_ARRAY, hkSmallArray<T>);
- /// Creates a zero length array.
- HK_FORCE_INLINE hkSmallArray();
- /// Creates an array of size n. All elements are uninitialized.
- explicit HK_FORCE_INLINE hkSmallArray(int size);
- /// Deallocates array memory.
- HK_FORCE_INLINE ~hkSmallArray();
- /// Returns the size.
- HK_FORCE_INLINE int getSize() const;
- /// Returns the capacity.
- HK_FORCE_INLINE int getCapacity() const;
- /// Checks if the size is zero.
- HK_FORCE_INLINE hkBool isEmpty() const;
- /// Checks if the locked flag is set.
- /// If an array is locked, the storage has come from file
- /// (so the do not deallocate flag is set) but it also
- /// means that the destructor will never be called so if you resize
- /// the array you will have to make sure and call clearAndDeallocate()
- /// yourself.
- HK_FORCE_INLINE hkBool isLocked();
- /// Increments the size by 1 and returns a reference to the first element created.
- HK_FORCE_INLINE T& expandOne( );
- /// Inserts the array a at index i.
- /// See also getSubarray() and the constructor, which uses an existing
- /// C style array in place.
- void insertAt(int i, const T* p, int numElems );
- /// Inserts t at index i.
- /// Elements from i to the end are copied up one place.
- void insertAt(int i, const T& t);
- /// Removes the element at the specified index. The last array element is used to replace the removed element, and the size is reduced by 1.
- /// This is very fast, but note that the order of elements is changed.
- void removeAt(int index);
- /// Removes the element at the specified index, copying elements down one slot as in the STL array.
- /// Slower than removeAt(), but the order is unchanged.
- void removeAtAndCopy(int index);
- /// Read/write access to the i'th element.
- HK_FORCE_INLINE T& operator[] (int i);
- /// Read only access to the i'th element.
- HK_FORCE_INLINE const T& operator[] (int i) const;
- /// Returns the index of the first occurrence of t, or -1 if not found.
- int indexOf(const T& t) const;
- /// Removes the last element.
- HK_FORCE_INLINE void popBack( int numElemsToRemove = 1 );
- /// Adds an element to the end.
- HK_FORCE_INLINE void pushBack(const T& e);
- /// Read/write access to the last element.
- HK_FORCE_INLINE T& back();
- /// Read only access to the last element.
- HK_FORCE_INLINE const T& back() const;
- ///
- typedef T* iterator;
- ///
- typedef const T* const_iterator;
- /// Returns an STL-like iterator to the first element.
- HK_FORCE_INLINE iterator begin();
- /// Returns an STL-like iterator to the 'one past the last' element.
- HK_FORCE_INLINE iterator end();
- /// Returns an STL-like const iterator to the first element.
- HK_FORCE_INLINE const_iterator begin() const;
- /// Returns an STL-like const iterator to the 'one past the last' element.
- HK_FORCE_INLINE const_iterator end() const;
- /// Ensures no reallocation occurs until at least size n.
- HK_FORCE_INLINE void reserve(int n);
- static void HK_CALL copyBackwards(T* dst, const T* src, int n);
- /// Sets the size to zero and deallocates storage.
- void clearAndDeallocate();
- public:
- // Public so that the serialization can access it.
- enum
- {
- CAPACITY_MASK = hkUint16(0x3fff),
- FLAG_MASK = hkUint16(0xC000),
- DONT_DEALLOCATE_FLAG = hkUint16(0x8000), // Indicates that the storage is not the array's to delete
- LOCKED_FLAG = hkUint16(0x4000), // Indicates that the array will never have its dtor called (read in from packfile for instance)
- FORCE_SIGNED = -1
- };
- protected:
- friend class hkStatisticsCollector;
- hkSmallArray(const hkSmallArray&) { }
- void operator=(const hkSmallArray&) { }
- void releaseMemory();
- T* m_data;
- hkUint16 m_size;
- hkUint16 m_capacityAndFlags; // highest 2 bits indicate any special considerations about the allocation for the array
- public:
- /// For serialization, we want to initialize the vtables
- /// in classes post data load, and NOT call the default constructor
- /// for the arrays (as the data has already been set).
- hkSmallArray(hkFinishLoadedObjectFlag f) { }
- };
- #include <Common/Base/Container/Array/hkSmallArray.inl>
- #undef hkArrayAllocator
- #endif // HKBASE_HKSMALLARRAY_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.
- *
- */