74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "std3d.h"
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#include "nel/3d/particle_system_process.h"
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#include "nel/3d/ps_allocator.h"
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namespace NL3D
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{
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#ifdef PS_FAST_ALLOC
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uint NumPSAlloc = 0;
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uint NumDealloc = 0;
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NLMISC::CContiguousBlockAllocator *PSBlockAllocator= NULL;
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static std::allocator<uint8> PSStdAllocator;
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//
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typedef NLMISC::CContiguousBlockAllocator *TBlocAllocPtr;
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//
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struct CPSAllocInfo
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{
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size_t NumAllocatedBytes;
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TBlocAllocPtr BlocAllocator; // may be NULL if was allocated from stl allocator
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};
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//
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void *PSFastMemAlloc(uint numBytes)
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{
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NL_PS_FUNC(PSFastMemAlloc)
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CPSAllocInfo *result;
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// if a block allocator is available, use it
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if (PSBlockAllocator)
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{
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result = (CPSAllocInfo *) PSBlockAllocator->alloc(numBytes + sizeof(CPSAllocInfo));
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result->BlocAllocator = PSBlockAllocator; // mark as a block from block allocator
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}
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else
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{
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result = (CPSAllocInfo *) PSStdAllocator.allocate(numBytes + sizeof(CPSAllocInfo));
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result->BlocAllocator = NULL;
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}
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result->NumAllocatedBytes = numBytes;
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return (void *) (result + 1); // usable space starts after header
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}
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void PSFastMemFree(void *block)
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{
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NL_PS_FUNC(PSFastMemFree)
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uint8 *realAddress = (uint8 *) ((uint8 *) block - sizeof(CPSAllocInfo));
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CPSAllocInfo *ai = (CPSAllocInfo *) realAddress;
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if (ai->BlocAllocator)
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{
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// block comes from a block allocator
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ai->BlocAllocator->free((void *) realAddress, ai->NumAllocatedBytes + sizeof(CPSAllocInfo));
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}
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else
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{
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// block comes from the stl allocator
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PSStdAllocator.deallocate((uint8 *) realAddress, ai->NumAllocatedBytes + sizeof(CPSAllocInfo));
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}
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}
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#endif
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}
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