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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
/*****************************************************************************
*
* $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/pnUtArray.cpp
*
***/
#include "../Pch.h"
#pragma hdrstop
/****************************************************************************
*
* CBaseArray
*
***/
//===========================================================================
unsigned CBaseArray::CalcAllocGrowth (unsigned newAlloc, unsigned oldAlloc, unsigned * chunkSize) {
// If this is the initial allocation, or if the new allocation is more
// than twice as big as the old allocation and larger than the chunk
// size, then allocate exactly the amount of memory requested
if (!oldAlloc || (newAlloc >= max(2 * oldAlloc, *chunkSize)))
return newAlloc;
// Otherwise, allocate memory beyond what was requested in preparation
// for future requests, so that we can reduce the time spent performing
// memory management
// For small allocations, double the size of the buffer each time
if (newAlloc < *chunkSize)
return max(newAlloc, 2 * oldAlloc);
// For larger allocations, grow by the chunk size each time
if (oldAlloc + *chunkSize > newAlloc) {
// If the application appears to be growing the array a chunk size
// at a time and has allocated at least 16 chunks, double the chunk
// size
if (newAlloc >= 16 * *chunkSize)
*chunkSize *= 2;
return oldAlloc + *chunkSize;
}
unsigned remainder = newAlloc % *chunkSize;
if (remainder)
return newAlloc + *chunkSize - remainder;
else
return newAlloc;
}
//===========================================================================
void * CBaseArray::ReallocPtr (void * ptr, unsigned bytes) {
void * newPtr = nil;
if (bytes) {
newPtr = ALLOCFLAGS(bytes, ARR_MEMORY_FLAGS);
}
return newPtr;
}