79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
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/**************************************************************************\
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*
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* Copyright (c) 1998 Microsoft Corporation
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*
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* Module Name:
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*
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* Dynamic array implementation class
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*
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* Abstract:
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*
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* This class contains definitions of functions which can't (or shouldn't)
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* be inlined. We use a separate implementation class because this allows us
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* to avoid the code bloat template classes produce; every instance of the
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* DynArray template can use the same version of each out-of-line member.
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*
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* The DynArray data members need to be declared here, because they are
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* used by DynArrayImpl.
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*
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* Created:
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*
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* 2/18/1999 agodfrey
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*
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\**************************************************************************/
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class DynArrayImpl
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{
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protected:
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// Constructor
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//
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// initalAllocation - the initial allocation, which can be global,
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// static or dynamic memory (or NULL)
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// allocSize - size of the initial allocation
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// (0 if there is none)
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// stepSize - number of elements added each time the buffer grows
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DynArrayImpl(void *initialAllocation, UINT allocSize, UINT stepSize);
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// Shrink the buffer so that it is just big enough for the items
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// the dynamic array holds.
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VOID ShrinkToSize(UINT eltSize);
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// Add space for new elements (if necessary). Does not update Count.
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// eltSize - size of each element
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// newElements - number of new elements
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GpStatus Grow(UINT eltSize, UINT newElements);
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// Add new, uninitialized elements, and return a pointer to them.
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// eltSize - size of each element
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// newElements - number of new elements
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void *AddMultiple(UINT eltSize, UINT newElements);
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// Add new elements, initializing them with the given data.
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// eltSize - size of each element
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// newElements - number of new elements
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// newData - the data to be copied into the new space
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GpStatus AddMultiple(UINT eltSize, UINT newElements, const void *newData);
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// Detach the data buffer from the dynamic array.
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// Cannot be used if there is an initial allocation.
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void *DetachData();
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// Capacity, StepSize, AllocSize and Count are all measured in elements,
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// not bytes.
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void *DataBuffer;
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void *InitialAllocation;
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UINT AllocSize;
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UINT Capacity;
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UINT StepSize;
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UINT Count;
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};
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