T2DynamicVector.cpp

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#include "ToshiPCH.h"
#include "T2DynamicVector.h"
 
//-----------------------------------------------------------------------------
// Enables memory debugging.
// Note: Should be the last include!
//-----------------------------------------------------------------------------
#include "Core/TMemoryDebugOn.h"
 
TOSHI_NAMESPACE_START
 
void T2GenericDynamicVector::Reallocate( TINT a_iNewSize, TINT a_iElementSize )
{
    if ( a_iNewSize != m_iAllocSize )
    {
        TASSERT( m_pAllocator != TNULL, "Cannot reallocate a T2DynamicVector with no allocator specified!" );
 
        void* elements = TNULL;
 
        if ( 0 < a_iNewSize )
        {
            elements = m_pAllocator->Malloc( a_iNewSize * a_iElementSize );
            TUtil::MemCopy( elements, m_poElements, m_iNumElements <= a_iNewSize ? m_iNumElements * a_iElementSize : a_iNewSize * a_iElementSize );
        }
 
        m_iAllocSize   = a_iNewSize;
        m_iNumElements = TMath::Min( m_iNumElements, a_iNewSize );
 
        if ( m_poElements )
        {
            m_pAllocator->Free( m_poElements );
        }
 
        m_poElements = elements;
    }
}
 
void T2GenericDynamicVector::Grow( TINT a_iNumElements, TINT a_iElementSize )
{
    TINT newSize = m_iNumElements + a_iNumElements;
    TINT curSize = m_iAllocSize;
 
    if ( curSize < newSize )
    {
        TASSERT( m_iGrowSize != 0 );
 
        while ( curSize < newSize )
        {
            if ( m_iGrowSize == -1 )
            {
                curSize = m_iAllocSize * 2 < 3 ? 2 : m_iAllocSize * 2;
            }
            else
            {
                curSize += m_iGrowSize;
            }
        }
 
        Reallocate( curSize, a_iElementSize );
    }
}
 
TOSHI_NAMESPACE_END