add vcglib

vcglib/wrap/qt/qt_thread_safe_memory_info.h

@@ -0,0 +1,82 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004-2016                                           \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* 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 2 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 (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+
+#ifndef __QT_THREAD_SAFE_MEMORY_INFO_H
+#define __QT_THREAD_SAFE_MEMORY_INFO_H
+
+#include <QReadWriteLock>
+
+#include <wrap/system/memory_info.h>
+
+namespace vcg
+{
+    class QtThreadSafeMemoryInfo : public vcg::NotThreadSafeMemoryInfo
+    {
+    public:
+	    QtThreadSafeMemoryInfo(std::ptrdiff_t originalmem)
+            :vcg::NotThreadSafeMemoryInfo(originalmem),lock(QReadWriteLock::Recursive)
+        {
+        }
+
+	    ~QtThreadSafeMemoryInfo()
+        {
+        }
+
+	    void acquiredMemory(std::ptrdiff_t mem)
+        {
+            QWriteLocker locker(&lock);
+            vcg::NotThreadSafeMemoryInfo::acquiredMemory(mem);
+        }
+
+	    std::ptrdiff_t usedMemory() const
+        {
+            QReadLocker locker(&lock);
+            return vcg::NotThreadSafeMemoryInfo::usedMemory();
+        }
+
+	    std::ptrdiff_t currentFreeMemory() const
+        {
+            QReadLocker locker(&lock);
+            return vcg::NotThreadSafeMemoryInfo::currentFreeMemory();
+        }
+
+	    void releasedMemory(std::ptrdiff_t mem = 0)
+        {
+            QWriteLocker locker(&lock);
+            vcg::NotThreadSafeMemoryInfo::releasedMemory(mem);
+        }
+	
+	    bool isAdditionalMemoryAvailable(std::ptrdiff_t mem)
+        {
+            QReadLocker locker(&lock);
+            return vcg::NotThreadSafeMemoryInfo::isAdditionalMemoryAvailable(mem);
+        }
+    private:
+	    //mutable objects can be modified from the declared const functions
+	    //in this way we have not to modified the basic vcg::MemoryInfo interface for the logically const functions
+	    //whose need to lock the mutex for a simple reading operation
+	    mutable QReadWriteLock lock;
+    };
+}
+
+#endif