/usr/include/libktorrent/util/bufferpool.h is in libktorrent-dev 1.3.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2011 by Joris Guisson *
* joris.guisson@gmail.com *
* *
* 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 for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef BUFFERPOOL_H_
#define BUFFERPOOL_H_
#include <map>
#include <list>
#include <boost/shared_array.hpp>
#include <QMutex>
#include <QWeakPointer>
#include <QSharedPointer>
#include <ktorrent_export.h>
#include <util/constants.h>
namespace bt
{
class BufferPool;
/**
* Buffer object, extends boost shared_array with a size and capacity property.
**/
class KTORRENT_EXPORT Buffer
{
public:
typedef QSharedPointer<Buffer> Ptr;
typedef boost::shared_array<bt::Uint8> Data;
Buffer(Data data, bt::Uint32 fill, bt::Uint32 cap, QWeakPointer<BufferPool> pool);
virtual ~Buffer();
/// Get the buffers capacity
bt::Uint32 capacity() const {return cap;}
/// Get the current size
bt::Uint32 size() const {return fill;}
/// Set the current size
void setSize(bt::Uint32 s) {fill = s;}
/// Get a pointer to the data
bt::Uint8* get() {return data.get();}
private:
Data data;
bt::Uint32 fill;
bt::Uint32 cap;
QWeakPointer<BufferPool> pool;
};
/**
* Keeps track of a pool of buffers.
**/
class KTORRENT_EXPORT BufferPool
{
public:
BufferPool();
virtual ~BufferPool();
/**
* Set the weak pointer to the buffer pool itself.
* @param wp The weak pointer
* */
void setWeakPointer(QWeakPointer<BufferPool> wp) {self = wp;}
/**
* Get a buffer for a given size.
* The buffer returned might be bigger then the requested size.
* @param min_size The minimum size it should be
* @return A new Buffer
**/
Buffer::Ptr get(bt::Uint32 min_size);
/**
* Release a buffer, puts it into the free list.
* @param data The Buffer::Data
* @param size The size of the data object
**/
void release(Buffer::Data data, bt::Uint32 size);
/**
* Clear the pool.
**/
void clear();
typedef QSharedPointer<BufferPool> Ptr;
private:
typedef std::map<bt::Uint32, std::list<Buffer::Data> > FreeBufferMap;
QMutex mutex;
FreeBufferMap free_buffers;
QWeakPointer<BufferPool> self;
};
} /* namespace bt */
#endif /* BUFFERPOOL_H_ */
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