101 lines
2.6 KiB
C++
101 lines
2.6 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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* Contributor:
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* Jeroen Bakker
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* Monique Dewanchand
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*/
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#include "COM_MemoryManagerState.h"
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MemoryManagerState::MemoryManagerState(MemoryProxy *memoryProxy)
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{
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this->memoryProxy = memoryProxy;
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this->currentSize = 0;
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this->chunkBuffers = NULL;
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BLI_mutex_init(&this->mutex);
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}
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MemoryProxy * MemoryManagerState::getMemoryProxy()
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{
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return this->memoryProxy;
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}
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MemoryManagerState::~MemoryManagerState()
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{
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this->memoryProxy = NULL;
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unsigned int index;
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for (index = 0 ; index < this->currentSize; index ++) {
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MemoryBuffer *buffer = this->chunkBuffers[index];
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if (buffer) {
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delete buffer;
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}
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}
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delete [] this->chunkBuffers;
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BLI_mutex_end(&this->mutex);
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}
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void MemoryManagerState::addMemoryBuffer(MemoryBuffer *buffer)
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{
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BLI_mutex_lock(&this->mutex);
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unsigned int chunkNumber = buffer->getChunkNumber();
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unsigned int index;
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while (this->currentSize <= chunkNumber) {
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unsigned int newSize = this->currentSize + 1000;
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MemoryBuffer** newbuffer = new MemoryBuffer*[newSize];
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MemoryBuffer** oldbuffer = this->chunkBuffers;
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for (index = 0 ; index < this->currentSize ; index++) {
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newbuffer[index] = oldbuffer[index];
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}
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for (index = currentSize ; index < newSize; index++) {
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newbuffer[index] = NULL;
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}
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this->chunkBuffers = newbuffer;
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this->currentSize = newSize;
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if (oldbuffer) delete oldbuffer;
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}
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if (this->chunkBuffers[chunkNumber] == NULL) {
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this->chunkBuffers[chunkNumber] = buffer;
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}
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else {
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throw "ALREADY ALLOCATED!";
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}
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BLI_mutex_unlock(&this->mutex);
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}
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MemoryBuffer *MemoryManagerState::getMemoryBuffer(unsigned int chunkNumber)
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{
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MemoryBuffer *result = NULL;
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if (chunkNumber< this->currentSize) {
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result = this->chunkBuffers[chunkNumber];
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if (result) {
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return result;
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}
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}
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BLI_mutex_lock(&this->mutex);
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if (chunkNumber< this->currentSize) {
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result = this->chunkBuffers[chunkNumber];
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}
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BLI_mutex_unlock(&this->mutex);
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return result;
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}
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