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0001 /*  This file is part of the KDE project
0002     Copyright (C) 2008 Matthias Kretz <kretz@kde.org>
0003 
0004     This program is free software; you can redistribute it and/or
0005     modify it under the terms of the GNU Library General Public
0006     License as published by the Free Software Foundation; either
0007     version 2 of the License, or (at your option) version 3.
0008 
0009     This library is distributed in the hope that it will be useful,
0010     but WITHOUT ANY WARRANTY; without even the implied warranty of
0011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0012     Library General Public License for more details.
0013 
0014     You should have received a copy of the GNU Library General Public License
0015     along with this library; see the file COPYING.LIB.  If not, write to
0016     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0017     Boston, MA 02110-1301, USA.
0018 
0019 */
0020 
0021 
0022 #ifndef PHONON_PACKETPOOL_P_H
0023 #define PHONON_PACKETPOOL_P_H
0024 
0025 #include <QAtomicInt>
0026 
0027 namespace Phonon
0028 {
0029 
0030 class PacketPrivate;
0031 class PacketPoolPrivate
0032 {
0033     friend class PacketPool;
0034     friend class Packet;
0035     public:
0036         ~PacketPoolPrivate();
0037 
0038         Packet acquirePacket();
0039         void releasePacket(const Packet &);
0040 
0041     protected:
0042         QAtomicInt ref;
0043 
0044     private:
0045         PacketPoolPrivate(int packetSize, int _poolSize);
0046 
0047         // C-array of PacketPrivate*
0048         PacketPrivate **freePackets;
0049         char *const packetMemory;
0050 
0051         QAtomicInt readPosition;
0052         QAtomicInt writePosition;
0053         QAtomicInt ringBufferSize;
0054 
0055         const int packetSize;
0056         const int poolSize;
0057 };
0058 
0059 } // namespace Phonon
0060 
0061 #endif // PHONON_PACKETPOOL_P_H