83 lines
3.4 KiB
C++
83 lines
3.4 KiB
C++
/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004-2016 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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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 General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (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 (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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#ifndef __QT_THREAD_SAFE_MEMORY_INFO_H
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#define __QT_THREAD_SAFE_MEMORY_INFO_H
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#include <QReadWriteLock>
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#include <wrap/system/memory_info.h>
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namespace vcg
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{
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class QtThreadSafeMemoryInfo : public vcg::NotThreadSafeMemoryInfo
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{
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public:
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QtThreadSafeMemoryInfo(std::ptrdiff_t originalmem)
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:vcg::NotThreadSafeMemoryInfo(originalmem),lock(QReadWriteLock::Recursive)
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{
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}
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~QtThreadSafeMemoryInfo()
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{
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}
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void acquiredMemory(std::ptrdiff_t mem)
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{
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QWriteLocker locker(&lock);
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vcg::NotThreadSafeMemoryInfo::acquiredMemory(mem);
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}
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std::ptrdiff_t usedMemory() const
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{
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QReadLocker locker(&lock);
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return vcg::NotThreadSafeMemoryInfo::usedMemory();
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}
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std::ptrdiff_t currentFreeMemory() const
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{
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QReadLocker locker(&lock);
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return vcg::NotThreadSafeMemoryInfo::currentFreeMemory();
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}
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void releasedMemory(std::ptrdiff_t mem = 0)
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{
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QWriteLocker locker(&lock);
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vcg::NotThreadSafeMemoryInfo::releasedMemory(mem);
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}
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bool isAdditionalMemoryAvailable(std::ptrdiff_t mem)
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{
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QReadLocker locker(&lock);
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return vcg::NotThreadSafeMemoryInfo::isAdditionalMemoryAvailable(mem);
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}
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private:
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//mutable objects can be modified from the declared const functions
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//in this way we have not to modified the basic vcg::MemoryInfo interface for the logically const functions
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//whose need to lock the mutex for a simple reading operation
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mutable QReadWriteLock lock;
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};
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}
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#endif
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