62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "util_foreach.h"
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#include "util_math.h"
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#include "util_memarena.h"
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CCL_NAMESPACE_BEGIN
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MemArena::MemArena(bool use_calloc_, size_t buffer_size_)
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{
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use_calloc = use_calloc_;
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buffer_size = buffer_size_;
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last_left = 0;
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last_buffer = NULL;
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}
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MemArena::~MemArena()
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{
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foreach(uint8_t *buffer, buffers)
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delete [] buffer;
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}
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void *MemArena::alloc(size_t size)
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{
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if(size > last_left) {
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last_left = (size > buffer_size)? size: buffer_size;
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last_buffer = new uint8_t[last_left];
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if(use_calloc)
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memset(last_buffer, 0, last_left);
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buffers.push_back(last_buffer);
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}
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uint8_t *mem = last_buffer;
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last_buffer += size;
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last_left -= size;
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return (void*)mem;
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}
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CCL_NAMESPACE_END
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