_ak_array_8h

Wwise SDK 2023.1.9

 /*******************************************************************************
 The content of this file includes portions of the AUDIOKINETIC Wwise Technology
 released in source code form as part of the SDK installer package.
  
 Commercial License Usage
  
 Licensees holding valid commercial licenses to the AUDIOKINETIC Wwise Technology
 may use this file in accordance with the end user license agreement provided 
 with the software or, alternatively, in accordance with the terms contained in a
 written agreement between you and Audiokinetic Inc.
  
 Apache License Usage
  
 Alternatively, this file may be used under the Apache License, Version 2.0 (the 
 "Apache License"); you may not use this file except in compliance with the 
 Apache License. You may obtain a copy of the Apache License at 
 http://www.apache.org/licenses/LICENSE-2.0.
  
 Unless required by applicable law or agreed to in writing, software distributed
 under the Apache License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
 OR CONDITIONS OF ANY KIND, either express or implied. See the Apache License for
 the specific language governing permissions and limitations under the License.
  
   Copyright (c) 2024 Audiokinetic Inc.
 *******************************************************************************/
  
 #ifndef _AKARRAY_H
 #define _AKARRAY_H
  
 #include <AK/Tools/Common/AkObject.h>
 #include <AK/Tools/Common/AkAssert.h>
 #include <AK/Tools/Common/AkPlatformFuncs.h>
  
 #include <utility>
  
 template <AkMemID T_MEMID>
 struct AkArrayAllocatorNoAlign
 {
     static AkForceInline void * Alloc( size_t in_uSize )
     {
         return AkAlloc(T_MEMID, in_uSize);
     }
  
     static AkForceInline void * ReAlloc( void * in_pCurrent, size_t in_uOldSize, size_t in_uNewSize )
     {
         AK_UNUSEDVAR(in_uOldSize);
         return AkRealloc(T_MEMID, in_pCurrent, in_uNewSize);
     }
  
     static AkForceInline void Free( void * in_pAddress )
     {
         AkFree(T_MEMID, in_pAddress);
     }
  
     static AkForceInline void TransferMem(void *& io_pDest, AkArrayAllocatorNoAlign<T_MEMID> in_srcAlloc, void * in_pSrc )
     {
         io_pDest = in_pSrc;
     }
 };
  
 template <AkMemID T_MEMID>
 struct AkArrayAllocatorAlignedSimd
 {
     AkForceInline void * Alloc( size_t in_uSize )
     {
         return AkMalign(T_MEMID, in_uSize, AK_SIMD_ALIGNMENT);
     }
  
     AkForceInline void * ReAlloc(void * in_pCurrent, size_t in_uOldSize, size_t in_uNewSize)
     {
         return AkReallocAligned(T_MEMID, in_pCurrent, in_uNewSize, AK_SIMD_ALIGNMENT);
     }
  
     AkForceInline void Free( void * in_pAddress )
     {
         AkFree(T_MEMID, in_pAddress);
     }
  
     AkForceInline void TransferMem(void *& io_pDest, AkArrayAllocatorAlignedSimd<T_MEMID> in_srcAlloc, void * in_pSrc )
     {
         io_pDest = in_pSrc;
     }
 };
  
 // AkHybridAllocator
 //  Attempts to allocate from a small buffer of size uBufferSizeBytes, which is contained within the array type.  Useful if the array is expected to contain a small number of elements.
 //  If the array grows to a larger size than uBufferSizeBytes, the the memory is allocated with the specified AkMemID.
 //  NOTE: The use of this allocator is not allowed when AkArray::TMovePolicy::IsTrivial() == false,
 //        since TMovePolicy::Move will not be invoked in TransferMem.
 template< AkUInt32 uBufferSizeBytes, AkUInt8 uAlignmentSize = 1, AkMemID T_MEMID = AkMemID_Object>
 struct AkHybridAllocator
 {
     static const AkUInt32 _uBufferSizeBytes = uBufferSizeBytes;
  
     AkForceInline void * Alloc(size_t in_uSize)
     {
         if (in_uSize <= uBufferSizeBytes)
             return (void *)&m_buffer;
         return AkMalign(T_MEMID, in_uSize, uAlignmentSize);
     }
  
     AkForceInline void * ReAlloc(void * in_pCurrent, size_t in_uOldSize, size_t in_uNewSize)
     {
         if (in_uNewSize <= uBufferSizeBytes)
             return (void *)&m_buffer;
  
         if (&m_buffer != in_pCurrent)
             return AkReallocAligned(T_MEMID, in_pCurrent, in_uNewSize, uAlignmentSize);
  
         void* pAddress = AkMalign(T_MEMID, in_uNewSize, uAlignmentSize);
         if (!pAddress)
             return NULL;
  
         AKPLATFORM::AkMemCpy(pAddress, m_buffer, (AkUInt32)in_uOldSize);
         return pAddress;
     }
  
     AkForceInline void Free(void * in_pAddress)
     {
         if (&m_buffer != in_pAddress)
             AkFree(T_MEMID, in_pAddress);
     }
  
     AkForceInline void TransferMem(void *& io_pDest, AkHybridAllocator<uBufferSizeBytes, uAlignmentSize, T_MEMID>& in_srcAlloc, void * in_pSrc)
     {
         if (&in_srcAlloc.m_buffer == in_pSrc)
         {
             AKPLATFORM::AkMemCpy(m_buffer, in_srcAlloc.m_buffer, uBufferSizeBytes);
             io_pDest = m_buffer;
         }
         else
         {
             io_pDest = in_pSrc;
         }
     }
     
     AK_ALIGN(char m_buffer[uBufferSizeBytes], uAlignmentSize);
 };
  
 // Helper for AkHybridAllocator for uCount items of type T.
 //  NOTE: The use of this allocator is not allowed when AkArray::TMovePolicy::IsTrivial() == false,
 //  since TMovePolicy::Move will not be invoked in TransferMem.
 template <class T, AkUInt32 uCount = 1, AkMemID MemID = AkMemID_Object>
 using AkSmallArrayAllocator = AkHybridAllocator<sizeof(T)* uCount, alignof(T), MemID>;
  
 template <class T>
 struct AkAssignmentMovePolicy
 {
     // By default the assignment operator is invoked to move elements of an array from slot to slot.  If desired,
     //  a custom 'Move' operation can be passed into TMovePolicy to transfer ownership of resources from in_Src to in_Dest.
     static AkForceInline void Move( T& in_Dest, T& in_Src )
     {
         in_Dest = in_Src;
     }
  
     // todo: use std::is_trivially_copyable<T>::value everywhere instead
     // To do so, we must revise usage of the different policies first.
     // Until then, it is not recommended to use this policy if T is not trivially copyable.
     static AkForceInline bool IsTrivial()
     {
         return true;
     }
 };
  
 // AkStdMovePolicy, for non-trivially copyable types.
 struct AkStdMovePolicy
 {
     template <class T>
     static AkForceInline void Move(T&& io_Dest, T&& io_Src)
     {
         io_Dest = std::move(io_Src);
     }
  
     static AkForceInline bool IsTrivial()
     {
         return false;
     }
 };
  
 // AkStdMovePolicy, for trivially copyable types.
 struct AkTrivialStdMovePolicy
 {
     template <class T>
     static AkForceInline void Move(T&& io_Dest, T&& io_Src)
     {
         io_Dest = std::move(io_Src);
     }
  
     static AkForceInline bool IsTrivial()
     {
         return true;
     }
 };
  
 // Can be used as TMovePolicy to create arrays of arrays.
 template <class T>
 struct AkTransferMovePolicy
 {
     static AkForceInline void Move( T& in_Dest, T& in_Src )
     {
         in_Dest.Transfer(in_Src); //transfer ownership of resources.
     }
  
     static AkForceInline bool IsTrivial()
     {
         return false;
     }
 };
  
 // Common allocators:
 typedef AkArrayAllocatorNoAlign<AkMemID_Object> ArrayPoolDefault;
 typedef AkArrayAllocatorNoAlign<AkMemID_Processing> ArrayPoolLEngineDefault;
 typedef AkArrayAllocatorNoAlign<AkMemID_Profiler> ArrayPoolProfiler;
 typedef AkArrayAllocatorAlignedSimd<AkMemID_Processing> ArrayPoolLEngineDefaultAlignedSimd;
  
 struct AkGrowByPolicy_Legacy
 {
     static AkUInt32 GrowBy( AkUInt32 /*in_CurrentArraySize*/ ) { return 1; }
 };
  
 struct AkGrowByPolicy_NoGrow
 {
     static AkUInt32 GrowBy( AkUInt32 /*in_CurrentArraySize*/ ) { return 0; }
 };
  
 // The hybrid GrowBy policy will try to grow to exactly uCount before growing farther to prevent unneccesary allocations.
 // The goal is to avoid expanding past uBufferSizeBytes until you have to, then behave like AkGrowByPolicy_Proportional
 // uCount should be uBufferSizeBytes / sizeof(T)
 template <AkUInt32 uCount>
 struct AkGrowByPolicy_Hybrid
 {
     static AkUInt32 GrowBy(AkUInt32 in_CurrentArraySize)
     {
         if (in_CurrentArraySize < uCount)
             return uCount - in_CurrentArraySize;
         else
         {
             return in_CurrentArraySize + (in_CurrentArraySize >> 1);
         }
     }
 };
  
 struct AkGrowByPolicy_Proportional
 {
     static AkUInt32 GrowBy( AkUInt32 in_CurrentArraySize )
     {
         if ( in_CurrentArraySize == 0 )
             return 1;
         else
             return in_CurrentArraySize + ( in_CurrentArraySize >> 1 );
     }
 };
  
 //#define AkGrowByPolicy_DEFAULT AkGrowByPolicy_Legacy
 #define AkGrowByPolicy_DEFAULT AkGrowByPolicy_Proportional
  
 /// Specific implementation of array
 template <class T, class ARG_T, class TAlloc = ArrayPoolDefault, class TGrowBy = AkGrowByPolicy_DEFAULT, class TMovePolicy = AkAssignmentMovePolicy<T> > class AkArray : public TAlloc
 {
 public:
     /// Constructor
     AkArray()
         : m_pItems( 0 )
         , m_uLength( 0 )
         , m_ulReserved( 0 )
     {
     }
  
     /// Destructor
     ~AkArray()
     {
         AKASSERT( m_pItems == 0 );
         AKASSERT( m_uLength == 0 );
         AKASSERT( m_ulReserved == 0 );
     }
  
 // Workaround for SWIG to parse nested structure: 
 // Bypass this inner struct and use a proxy in a separate header.
 #ifndef SWIG
     /// Iterator
     struct Iterator
     {
         T* pItem;   ///< Pointer to the item in the array.
  
         /// + operator</span>
         Iterator operator+(AkUInt32 inc) const
         {
             AKASSERT( pItem );
             Iterator returnedIt;
             returnedIt.pItem = pItem + inc;
             return returnedIt;
         }
  
         /// - operator</span>
         AkUInt32 operator-(Iterator const& rhs) const
         {
             AKASSERT((pItem && rhs.pItem)||(!pItem && !rhs.pItem));
             return (AkUInt32)(pItem - rhs.pItem);
         }
  
         /// ++ operator</span>
         Iterator& operator++()
         {
             AKASSERT( pItem );
             ++pItem;
             return *this;
         }
  
         /// -- operator</span>
         Iterator& operator--()
         {
             AKASSERT( pItem );
             --pItem;
             return *this;
         }
  
         /// * operator</span>
         T& operator*()
         {
             AKASSERT( pItem );
             return *pItem;
         }
  
         T* operator->() const
         {
             AKASSERT( pItem );
             return pItem;
         }
  
         /// == operator</span>
         bool operator ==( const Iterator& in_rOp ) const
         {
             return ( pItem == in_rOp.pItem );
         }
  
         /// != operator</span>
         bool operator !=( const Iterator& in_rOp ) const
         {
             return ( pItem != in_rOp.pItem );
         }
     };
 #endif // #ifndef SWIG
  
     /// Returns the iterator to the first item of the array, will be End() if the array is empty.
     Iterator Begin() const
     {
         Iterator returnedIt;
         returnedIt.pItem = m_pItems;
         return returnedIt;
     }
  
     /// Returns the iterator to the end of the array
     Iterator End() const
     {
         Iterator returnedIt;
         returnedIt.pItem = m_pItems + m_uLength;
         return returnedIt;
     }
  
     /// Returns the iterator th the specified item, will be End() if the item is not found
     Iterator FindEx( ARG_T in_Item ) const
     {
         Iterator it = Begin();
  
         for ( Iterator itEnd = End(); it != itEnd; ++it )
         {
             if ( *it == in_Item )
                 break;
         }
  
         return it;
     }
  
     /// Returns the iterator of the specified item, will be End() if the item is not found
     /// The array must be in ascending sorted order.
     Iterator BinarySearch( ARG_T in_Item ) const
     {
         AkUInt32 uNumToSearch = Length();
         T* pBase = m_pItems;
         T* pPivot;
  
         while ( uNumToSearch > 0 )
         {
             pPivot = pBase + ( uNumToSearch >> 1 );
             if ( in_Item == *pPivot )
             {
                 Iterator result;
                 result.pItem = pPivot;
                 return result;
             }
  
             if ( in_Item > *pPivot )
             {
                 pBase = pPivot + 1;
                 uNumToSearch--;
             }
             uNumToSearch >>= 1;
         }
  
         return End();
     }
  
     /// Erase the specified iterator from the array
     Iterator Erase( Iterator& in_rIter )
     {
         AKASSERT( m_pItems != 0 );
  
         if (TMovePolicy::IsTrivial())
         {
             T* pItem = in_rIter.pItem;
             T* pLastItem = m_pItems + (m_uLength - 1);
  
             // Destroy item
             pItem->~T();
  
             // Move all others by one <-
             if (pItem < pLastItem)
             {
                 AKPLATFORM::AkMemMove(
                     pItem,
                     pItem + 1,
                     (AkUInt32)(pLastItem - pItem) * sizeof(T)
                 );
             }
         }
         else
         {
             // Move items by 1 <-
             T* pItemLast = m_pItems + m_uLength - 1;
  
             for (T* pItem = in_rIter.pItem; pItem < pItemLast; pItem++)
                 TMovePolicy::Move(pItem[0], pItem[1]);
  
             // Destroy the last item
             pItemLast->~T();
         }
  
         m_uLength--;
  
         return in_rIter;
     }
  
     /// Erase the item at the specified index
     void Erase( unsigned int in_uIndex )
     {
         AKASSERT( m_pItems != 0 );
  
         if (TMovePolicy::IsTrivial())
         {
             T* pItem = m_pItems + in_uIndex;
  
             // Destroy item
             pItem->~T();
  
             // Move all others by one <-
             if (in_uIndex + 1 < m_uLength)
             {
                 AKPLATFORM::AkMemMove(
                     pItem,
                     pItem + 1,
                     (m_uLength - in_uIndex - 1) * sizeof(T)
                 );
             }
         }
         else
         {
             // Move items by 1 <-
             T* pItemLast = m_pItems + m_uLength - 1;
  
             for (T* pItem = m_pItems + in_uIndex; pItem < pItemLast; pItem++)
                 TMovePolicy::Move(pItem[0], pItem[1]);
  
             // Destroy the last item
             pItemLast->~T();
         }
  
         m_uLength--;
     }
  
     /// Erase the specified iterator in the array. but it does not guarantee the ordering in the array.
     /// This version should be used only when the order in the array is not an issue.
     Iterator EraseSwap( Iterator& in_rIter )
     {
         AKASSERT( m_pItems != 0 && Length() > 0 );
  
         if (in_rIter.pItem < (m_pItems + m_uLength - 1))
         {
             // Swap last item with this one.
             TMovePolicy::Move( *in_rIter.pItem, Last( ) );
         }
  
         // Destroy.
         AKASSERT( Length( ) > 0 );
         Last( ).~T();
  
         m_uLength--;
  
         return in_rIter;
     }
  
     /// Erase the item at the specified index, but it does not guarantee the ordering in the array.
     /// This version should be used only when the order in the array is not an issue.
     void EraseSwap(unsigned int in_uIndex)
     {
         Iterator Iterator;
         Iterator.pItem = m_pItems + in_uIndex;
         EraseSwap(Iterator);
     }
  
     bool IsGrowingAllowed() const
     {
         return TGrowBy::GrowBy( 1 ) != 0;
     }
  
     /// Ensure preallocation of a number of items.
     ///
     /// Reserve() won't change the Length() of the array and does nothing if
     /// in_ulReserve is smaller or equal to current Reserved() size.
     ///
     /// If an allocation occurs, i.e. `in_ulReserve > Reserved()`, all iterators and
     /// all references to the array elements are invalidated.
     ///
     /// \note When template parameter `TGrowBy = AkGrowByPolicy_NoGrow`, Reserve() shall
     ///       only be called if the current reserved size is zero.
     ///       It should normally only be called once on init.
     ///
     /// \note When template parameter `TGrowBy = AkGrowByPolicy_Proportional`, inappropriate
     ///       calls to Reserve(), e.g. calling it before every AddLast(), may increase the
     ///       number of reallocations and result in decreased performance.
     inline AKRESULT Reserve(AkUInt32 in_ulReserve)
     {
         if (in_ulReserve <= m_ulReserved)
             return AK_Success;
  
         if (m_ulReserved && !IsGrowingAllowed())
         {
             AKASSERT(!"AkArray calling Reserve() with AkGrowByPolicy_NoGrow is only allowed when reserved size is zero");
             return AK_InvalidParameter;
         }
  
         return GrowArray(in_ulReserve - m_ulReserved) ? AK_Success : AK_InsufficientMemory;
     }
  
     /// Ensure preallocation of a number of extra items on top of current array size.
     /// Same as calling `myArray.Reserve(myArray.Length() + extraItemCount)`.
     /// \see Reserve()
     inline AKRESULT ReserveExtra(AkUInt32 in_ulReserve)
     {
         return Reserve(Length() + in_ulReserve);
     }
  
     AkUInt32 Reserved() const { return m_ulReserved; }
  
     /// Term the array. Must be called before destroying the object.
     void Term()
     {
         if ( m_pItems )
         {
             RemoveAll();
             TAlloc::Free( m_pItems );
             m_pItems = 0;
             m_ulReserved = 0;
         }
     }
  
     /// Returns the numbers of items in the array.
     AkForceInline AkUInt32 Length() const
     {
         return m_uLength;
     }
  
     /// Returns a pointer to the first item in the array.
     AkForceInline T * Data() const
     {
         return m_pItems;
     }
  
     /// Returns true if the number items in the array is 0, false otherwise.
     AkForceInline bool IsEmpty() const
     {
         return m_uLength == 0;
     }
     
     /// Returns a pointer to the specified item in the list if it exists, 0 if not found.
     AkForceInline T* Exists(ARG_T in_Item) const
     {
         Iterator it = FindEx( in_Item );
         return ( it != End() ) ? it.pItem : 0;
     }
  
     /// Add an item in the array, without filling it.
     /// Returns a pointer to the location to be filled.
     AkForceInline T * AddLast()
     {
         size_t cItems = Length();
  
 #if defined(_MSC_VER)
 #pragma warning( push )
 #pragma warning( disable : 4127 )
 #endif
         if ( ( cItems >= m_ulReserved ) && IsGrowingAllowed() )
         {
             if ( !GrowArray() ) 
                 return 0;
         }
 #if defined(_MSC_VER)
 #pragma warning( pop )
 #endif
  
         // have we got space for a new one ?
         if(  cItems < m_ulReserved )
         {
             T * pEnd = m_pItems + m_uLength++;
             AkPlacementNew( pEnd ) T; 
             return pEnd;
         }
  
         return 0;
     }
  
     /// Add an item in the array, and fills it with the provided item.
     AkForceInline T * AddLast(ARG_T in_rItem)
     {
         T * pItem = AddLast();
         if ( pItem )
             *pItem = in_rItem;
         return pItem;
     }
  
     /// Returns a reference to the last item in the array.
     T& Last()
     {
         AKASSERT( m_uLength );
  
         return *( m_pItems + m_uLength - 1 );
     }
  
     /// Removes the last item from the array.
     void RemoveLast()
     {
         AKASSERT( m_uLength );
         ( m_pItems + m_uLength - 1 )->~T();
         m_uLength--;
     }
  
     /// Removes the specified item if found in the array.
     AKRESULT Remove(ARG_T in_rItem)
     {
         Iterator it = FindEx( in_rItem );
         if ( it != End() )
         {
             Erase( it );
             return AK_Success;
         }
  
         return AK_Fail;
     }
  
     /// Fast remove of the specified item in the array.
     /// This method do not guarantee keeping ordering of the array.
     AKRESULT RemoveSwap(ARG_T in_rItem)
     {
         Iterator it = FindEx( in_rItem );
         if ( it != End() )
         {
             EraseSwap( it );
             return AK_Success;
         }
  
         return AK_Fail;
     }
  
     /// Removes all items in the array
     void RemoveAll()
     {
         for ( Iterator it = Begin(), itEnd = End(); it != itEnd; ++it )
             (*it).~T();
         m_uLength = 0;
     }
  
     /// Operator [], return a reference to the specified index.
     AkForceInline T& operator[](unsigned int uiIndex) const
     {
         AKASSERT( m_pItems );
         AKASSERT( uiIndex < Length() );
         return m_pItems[uiIndex];
     }
  
     /// Insert an item at the specified position without filling it.
     /// Success: returns an iterator pointing to the new item.
     /// Failure: returns end iterator.
     Iterator Insert(Iterator& in_rIter)
     {
         AKASSERT(!in_rIter.pItem || m_pItems);
  
         AkUInt32 index = (in_rIter.pItem && m_pItems) ? (AkUInt32)(in_rIter.pItem - m_pItems) : 0;
         if (index <= Length())
         {
             if (T* ptr = Insert(index))
             {
                 Iterator it;
                 it.pItem = ptr;
                 return it;
             }
         }
  
         return End();
     }
  
     /// Insert an item at the specified position without filling it.
     /// Returns the pointer to the item to be filled.
     T * Insert(unsigned int in_uIndex)
     {
         AKASSERT( in_uIndex <= Length() );
  
         size_t cItems = Length();
  
 #if defined(_MSC_VER)
 #pragma warning( push )
 #pragma warning( disable : 4127 )
 #endif
         if ( ( cItems >= m_ulReserved ) && IsGrowingAllowed() )
         {
             if ( !GrowArray() ) 
                 return 0;
         }
 #if defined(_MSC_VER)
 #pragma warning( pop )
 #endif
  
         // have we got space for a new one ?
         if (cItems < m_ulReserved)
         {
             if (TMovePolicy::IsTrivial())
             {
                 T* pItem = m_pItems + in_uIndex;
  
                 // Move items by one ->
                 if (in_uIndex < m_uLength)
                 {
                     AKPLATFORM::AkMemMove(
                         pItem + 1,
                         pItem,
                         (m_uLength - in_uIndex) * sizeof(T)
                     );
                 }
  
                 // Initialize the new item
                 AkPlacementNew(pItem) T;
  
                 m_uLength++;
             }
             else
             {
                 T* pItemLast = m_pItems + m_uLength++;
                 AkPlacementNew(pItemLast) T;
  
                 // Move items by 1 ->
                 for (T* pItem = pItemLast; pItem > (m_pItems + in_uIndex); --pItem)
                     TMovePolicy::Move(pItem[0], pItem[-1]);
  
                 // Reinitialize item at index
                 (m_pItems + in_uIndex)->~T();
                 AkPlacementNew(m_pItems + in_uIndex) T;
             }
  
             return m_pItems + in_uIndex;
         }
  
         return 0;
     }
  
     bool GrowArray()
     {
         // If no size specified, growing by the declared growth policy of the array.
         return GrowArray( TGrowBy::GrowBy( m_ulReserved ) );
     }
  
     /// Resize the array.
     bool GrowArray( AkUInt32 in_uGrowBy )
     {
         AKASSERT( in_uGrowBy );
  
         AkUInt32 ulNewReserve = m_ulReserved + in_uGrowBy;
         T * pNewItems = NULL;
         size_t cItems = Length();
  
         // Reallocate only if IsTrivial() and m_pItems is already allocated.
         if (m_pItems && TMovePolicy::IsTrivial())
         {
             pNewItems = (T *)TAlloc::ReAlloc(m_pItems, sizeof(T) * cItems, sizeof(T) * ulNewReserve);
             if (!pNewItems)
                 return false;
         }
         else
         {
             pNewItems = (T *)TAlloc::Alloc(sizeof(T) * ulNewReserve);
             if (!pNewItems)
                 return false;
  
             // Copy all elements in new array, destroy old ones
             if (m_pItems && m_pItems != pNewItems /*AkHybridAllocator may serve up same memory*/)
             {
                 for (size_t i = 0; i < cItems; ++i)
                 {
                     AkPlacementNew(pNewItems + i) T;
  
                     TMovePolicy::Move(pNewItems[i], m_pItems[i]);
  
                     m_pItems[i].~T();
                 }
  
                 TAlloc::Free(m_pItems);
             }
         }
  
         m_pItems = pNewItems;
         m_ulReserved = ulNewReserve;
         return true;
     }
  
     /// Resize the array to the specified size.
     bool Resize(AkUInt32 in_uiSize)
     {
         AkUInt32 cItems = Length();
         if (in_uiSize < cItems)
         {
             for (AkUInt32 i = in_uiSize; i < cItems; i++)
             {
                 m_pItems[i].~T();
             }
             
             m_uLength = in_uiSize;
             return true;
         }
  
         if ( in_uiSize > m_ulReserved )
         {
             if ( !GrowArray(in_uiSize - m_ulReserved) )
                 return false;
         }
  
         //Create the missing items.
         for(size_t i = cItems; i < in_uiSize; i++)
         {
             AkPlacementNew( m_pItems + i ) T; 
         }
  
         m_uLength = in_uiSize;
         return true;
     }
  
     void Transfer(AkArray<T,ARG_T,TAlloc,TGrowBy,TMovePolicy>& in_rSource)
     {
         Term();
  
         TAlloc::TransferMem( (void*&)m_pItems, in_rSource, (void*)in_rSource.m_pItems );
         m_uLength = in_rSource.m_uLength;
         m_ulReserved = in_rSource.m_ulReserved;
  
         in_rSource.m_pItems = NULL;
         in_rSource.m_uLength = 0;
         in_rSource.m_ulReserved = 0;
     }
  
     AKRESULT Copy(const AkArray<T, ARG_T, TAlloc, TGrowBy, TMovePolicy>& in_rSource)
     {
         RemoveAll();
  
         if (Resize(in_rSource.Length()))
         {
             for (AkUInt32 i = 0; i < in_rSource.Length(); ++i)
                 m_pItems[i] = in_rSource.m_pItems[i];
             return AK_Success;
         }
         return AK_Fail;
     }
  
 protected:
  
     T *         m_pItems;       ///< pointer to the beginning of the array.
     AkUInt32    m_uLength;      ///< number of items in the array.
     AkUInt32    m_ulReserved;   ///< how many we can have at most (currently allocated).
 };
  
  
 #endif

AkArray::EraseSwap

void EraseSwap(unsigned int in_uIndex)

Definition: AkArray.h:503

AkArrayAllocatorNoAlign::TransferMem

static AkForceInline void TransferMem(void *&io_pDest, AkArrayAllocatorNoAlign< T_MEMID > in_srcAlloc, void *in_pSrc)

Definition: AkArray.h:55

AkHybridAllocator::TransferMem

AkForceInline void TransferMem(void *&io_pDest, AkHybridAllocator< uBufferSizeBytes, uAlignmentSize, T_MEMID > &in_srcAlloc, void *in_pSrc)

Definition: AkArray.h:124

AkArray::Iterator::operator-

AkUInt32 operator-(Iterator const &rhs) const

Definition: AkArray.h:295

AkArrayAllocatorAlignedSimd::Alloc

AkForceInline void * Alloc(size_t in_uSize)

Definition: AkArray.h:64

AkArrayAllocatorAlignedSimd::Free

AkForceInline void Free(void *in_pAddress)

Definition: AkArray.h:74

AkArray::Iterator::operator++

Iterator & operator++()

++ operator</div>

Definition: AkArray.h:302

AkHybridAllocator::_uBufferSizeBytes

static const AkUInt32 _uBufferSizeBytes

Definition: AkArray.h:93

AkArrayAllocatorAlignedSimd

Definition: AkArray.h:63

AKPLATFORM::AkMemMove

AkForceInline void AkMemMove(void *pDest, const void *pSrc, AkUInt32 uSize)

Definition: AkPlatformFuncs.h:128

AkArray::~AkArray

~AkArray()

Destructor

Definition: AkArray.h:270

AK_Fail

@ AK_Fail

The operation failed.

Definition: AkTypes.h:134

AkArray::IsGrowingAllowed

bool IsGrowingAllowed() const

Definition: AkArray.h:510

AkGrowByPolicy_Proportional

Definition: AkArray.h:244

AkHybridAllocator::ReAlloc

AkForceInline void * ReAlloc(void *in_pCurrent, size_t in_uOldSize, size_t in_uNewSize)

Definition: AkArray.h:102

AkArray::Copy

AKRESULT Copy(const AkArray< T, ARG_T, TAlloc, TGrowBy, TMovePolicy > &in_rSource)

Definition: AkArray.h:866

AkArray::FindEx

Iterator FindEx(ARG_T in_Item) const

Returns the iterator th the specified item, will be End() if the item is not found

Definition: AkArray.h:361

AkTrivialStdMovePolicy

Definition: AkArray.h:182

AkArray::RemoveAll

void RemoveAll()

Removes all items in the array

Definition: AkArray.h:674

AkFree

#define AkFree(_pool, _pvmem)

Definition: AkObject.h:82

AK::MemoryMgr::Free

AKSOUNDENGINE_API void Free(AkMemPoolId in_poolId, void *in_pMemAddress)

AkHybridAllocator::AK_ALIGN

AK_ALIGN(char m_buffer[uBufferSizeBytes], uAlignmentSize)

AkTransferMovePolicy

Definition: AkArray.h:198

AkArray::Last

T & Last()

Returns a reference to the last item in the array.

Definition: AkArray.h:631

AKRESULT

Standard function call result.

Definition: AkTypes.h:131

AkArrayAllocatorAlignedSimd::ReAlloc

AkForceInline void * ReAlloc(void *in_pCurrent, size_t in_uOldSize, size_t in_uNewSize)

Definition: AkArray.h:69

AkArray::RemoveSwap

AKRESULT RemoveSwap(ARG_T in_rItem)

Definition: AkArray.h:661

ArrayPoolLEngineDefaultAlignedSimd

AkArrayAllocatorAlignedSimd< AkMemID_Processing > ArrayPoolLEngineDefaultAlignedSimd

Definition: AkArray.h:214

AkHybridAllocator::Free

AkForceInline void Free(void *in_pAddress)

Definition: AkArray.h:118

AkGrowByPolicy_Hybrid::GrowBy

static AkUInt32 GrowBy(AkUInt32 in_CurrentArraySize)

Definition: AkArray.h:232

AkArray::Exists

AkForceInline T * Exists(ARG_T in_Item) const

Returns a pointer to the specified item in the list if it exists, 0 if not found.

Definition: AkArray.h:585

AkArray

Specific implementation of array

Definition: AkArray.h:259

AkAlloc

#define AkAlloc(_pool, _size)

Definition: AkObject.h:75

NULL

#define NULL

Definition: AkTypes.h:46

AkStdMovePolicy::IsTrivial

static AkForceInline bool IsTrivial()

Definition: AkArray.h:174

AkArray::Iterator::pItem

T * pItem

Pointer to the item in the array.

Definition: AkArray.h:283

AK_Success

@ AK_Success

The operation was successful.

Definition: AkTypes.h:133

AkArray::GrowArray

bool GrowArray(AkUInt32 in_uGrowBy)

Resize the array.

Definition: AkArray.h:780

AkArray::Iterator::operator->

T * operator->() const

Definition: AkArray.h:324

ArrayPoolProfiler

AkArrayAllocatorNoAlign< AkMemID_Profiler > ArrayPoolProfiler

Definition: AkArray.h:213

ArrayPoolLEngineDefault

AkArrayAllocatorNoAlign< AkMemID_Processing > ArrayPoolLEngineDefault

Definition: AkArray.h:212

AkArrayAllocatorAlignedSimd::TransferMem

AkForceInline void TransferMem(void *&io_pDest, AkArrayAllocatorAlignedSimd< T_MEMID > in_srcAlloc, void *in_pSrc)

Definition: AkArray.h:79

AkArray::Iterator::operator==

bool operator==(const Iterator &in_rOp) const

== operator</div>

Definition: AkArray.h:331

AkPlacementNew

#define AkPlacementNew(_memory)

Definition: AkObject.h:49

AkArray::RemoveLast

void RemoveLast()

Removes the last item from the array.

Definition: AkArray.h:639

AK_InvalidParameter

@ AK_InvalidParameter

Something is not within bounds, check the documentation of the function returning this code.

Definition: AkTypes.h:149

AkArrayAllocatorNoAlign::Alloc

static AkForceInline void * Alloc(size_t in_uSize)

Definition: AkArray.h:39

AkArray::m_uLength

AkUInt32 m_uLength

number of items in the array.

Definition: AkArray.h:882

AkArray::Resize

bool Resize(AkUInt32 in_uiSize)

Resize the array to the specified size.

Definition: AkArray.h:823

AkArray::AkArray

AkArray()

Constructor

Definition: AkArray.h:262

AkArray::AddLast

AkForceInline T * AddLast(ARG_T in_rItem)

Add an item in the array, and fills it with the provided item.

Definition: AkArray.h:622

AkArray::Iterator

Iterator

Definition: AkArray.h:282

AKASSERT

#define AKASSERT(Condition)

Definition: AkAssert.h:67

AkGrowByPolicy_NoGrow::GrowBy

static AkUInt32 GrowBy(AkUInt32)

Definition: AkArray.h:223

AkArrayAllocatorNoAlign::ReAlloc

static AkForceInline void * ReAlloc(void *in_pCurrent, size_t in_uOldSize, size_t in_uNewSize)

Definition: AkArray.h:44

AkArray::ReserveExtra

AKRESULT ReserveExtra(AkUInt32 in_ulReserve)

Definition: AkArray.h:547

AKPLATFORM::AkMemCpy

AkForceInline void AkMemCpy(void *pDest, const void *pSrc, AkUInt32 uSize)

Platform Independent Helper for memcpy/memmove/memset

Definition: AkPlatformFuncs.h:123

AkArray::End

Iterator End() const

Returns the iterator to the end of the array

Definition: AkArray.h:353

AkArray::Reserved

AkUInt32 Reserved() const

Definition: AkArray.h:552

AkArray::Insert

Iterator Insert(Iterator &in_rIter)

Definition: AkArray.h:692

AkObject.h

AkHybridAllocator::Alloc

AkForceInline void * Alloc(size_t in_uSize)

Definition: AkArray.h:95

AkStdMovePolicy

Definition: AkArray.h:167

AkArray::Iterator::operator*

T & operator*()

Definition: AkArray.h:318

AkAssignmentMovePolicy

Definition: AkArray.h:148

AK_SIMD_ALIGNMENT

#define AK_SIMD_ALIGNMENT

Platform-specific alignment requirement for SIMD data

Definition: AkTypes.h:52

AkPlatformFuncs.h

AkArray::Transfer

void Transfer(AkArray< T, ARG_T, TAlloc, TGrowBy, TMovePolicy > &in_rSource)

Definition: AkArray.h:853

AkArray::Erase

Iterator Erase(Iterator &in_rIter)

Erase the specified iterator from the array

Definition: AkArray.h:404

AkTransferMovePolicy::Move

static AkForceInline void Move(T &in_Dest, T &in_Src)

Definition: AkArray.h:199

AkMalign

#define AkMalign(_pool, _size, _align)

Definition: AkObject.h:76

AkArray::m_ulReserved

AkUInt32 m_ulReserved

how many we can have at most (currently allocated).

Definition: AkArray.h:883

AkArray::Begin

Iterator Begin() const

Returns the iterator to the first item of the array, will be End() if the array is empty.

Definition: AkArray.h:345

AkArray::Length

AkForceInline AkUInt32 Length() const

Returns the numbers of items in the array.

Definition: AkArray.h:567

AkTransferMovePolicy::IsTrivial

static AkForceInline bool IsTrivial()

Definition: AkArray.h:204

AkRealloc

#define AkRealloc(_pool, _pvmem, _size)

Definition: AkObject.h:78

ArrayPoolDefault

AkArrayAllocatorNoAlign< AkMemID_Object > ArrayPoolDefault

Definition: AkArray.h:211

AkArray::Remove

AKRESULT Remove(ARG_T in_rItem)

Removes the specified item if found in the array.

Definition: AkArray.h:647

AkGrowByPolicy_Hybrid

Definition: AkArray.h:231

AkArray::Erase

void Erase(unsigned int in_uIndex)

Erase the item at the specified index

Definition: AkArray.h:444

AkArray::Iterator::operator!=

bool operator!=(const Iterator &in_rOp) const

!= operator</div>

Definition: AkArray.h:337

AkGrowByPolicy_Legacy

Definition: AkArray.h:217

AkArray::GrowArray

bool GrowArray()

Definition: AkArray.h:773

AkArray::AddLast

AkForceInline T * AddLast()

Definition: AkArray.h:593

AkArrayAllocatorNoAlign::Free

static AkForceInline void Free(void *in_pAddress)

Definition: AkArray.h:50

AkUInt32

uint32_t AkUInt32

Unsigned 32-bit integer

Definition: AkNumeralTypes.h:38

AkHybridAllocator

Definition: AkArray.h:92

AK_UNUSEDVAR

#define AK_UNUSEDVAR(x)

Definition: AkPlatforms.h:166

AkArray::Term

void Term()

Term the array. Must be called before destroying the object.

Definition: AkArray.h:555

AkAssignmentMovePolicy::IsTrivial

static AkForceInline bool IsTrivial()

Definition: AkArray.h:159

AK_InsufficientMemory

@ AK_InsufficientMemory

Memory error.

Definition: AkTypes.h:161

AkGrowByPolicy_Proportional::GrowBy

static AkUInt32 GrowBy(AkUInt32 in_CurrentArraySize)

Definition: AkArray.h:245

AkGrowByPolicy_Legacy::GrowBy

static AkUInt32 GrowBy(AkUInt32)

Definition: AkArray.h:218

AkAssert.h

AkArray::IsEmpty

AkForceInline bool IsEmpty() const

Returns true if the number items in the array is 0, false otherwise.

Definition: AkArray.h:579

AkAssignmentMovePolicy::Move

static AkForceInline void Move(T &in_Dest, T &in_Src)

Definition: AkArray.h:151

AkGrowByPolicy_NoGrow

Definition: AkArray.h:222

AkForceInline

#define AkForceInline

Definition: AkTypes.h:63

AkArray::Data

AkForceInline T * Data() const

Returns a pointer to the first item in the array.

Definition: AkArray.h:573

AkArray::Insert

T * Insert(unsigned int in_uIndex)

Definition: AkArray.h:712

AkArrayAllocatorNoAlign

Definition: AkArray.h:38

AkArray::Iterator::operator--

Iterator & operator--()

– operator</div>

Definition: AkArray.h:310

AkArray::EraseSwap

Iterator EraseSwap(Iterator &in_rIter)

Definition: AkArray.h:482

AkArray::operator[]

AkForceInline T & operator[](unsigned int uiIndex) const

Operator [], return a reference to the specified index.

Definition: AkArray.h:682

AkReallocAligned

#define AkReallocAligned(_pool, _pvmem, _size, _align)

Definition: AkObject.h:79

AkArray::Reserve

AKRESULT Reserve(AkUInt32 in_ulReserve)

Definition: AkArray.h:530

AkArray::Iterator::operator+

Iterator operator+(AkUInt32 inc) const

Definition: AkArray.h:286

AkStdMovePolicy::Move

static AkForceInline void Move(T &&io_Dest, T &&io_Src)

Definition: AkArray.h:169

AkArray::BinarySearch

Iterator BinarySearch(ARG_T in_Item) const

Definition: AkArray.h:376

AkArray::m_pItems

T * m_pItems

pointer to the beginning of the array.

Definition: AkArray.h:881

AkTrivialStdMovePolicy::Move

static AkForceInline void Move(T &&io_Dest, T &&io_Src)

Definition: AkArray.h:184

AkTrivialStdMovePolicy::IsTrivial

static AkForceInline bool IsTrivial()

Definition: AkArray.h:189

此页面对您是否有帮助？

需要技术支持？

仍有疑问？或者问题？需要更多信息？欢迎联系我们，我们可以提供帮助！

查看我们的“技术支持”页面

介绍一下自己的项目。我们会竭力为您提供帮助。

来注册自己的项目，我们帮您快速入门，不带任何附加条件！

开始 Wwise 之旅

Wwise SDK

_ak_array_8h_source

此页面对您是否有帮助？

需要技术支持？

介绍一下自己的项目。我们会竭力为您提供帮助。