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/******************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Debug Bridge.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#ifndef SUBNET_H
#define SUBNET_H
#include <QtCore/qmutex.h>
#include <QtNetwork/qhostaddress.h>
#include <memory>
struct Subnet
{
QHostAddress address;
int prefixLength;
};
Q_DECLARE_METATYPE(Subnet)
bool operator==(const Subnet &lhs, const Subnet &rhs);
class SubnetReservationImpl
{
public:
SubnetReservationImpl(const Subnet &subnet);
~SubnetReservationImpl();
Subnet subnet() const;
private:
Subnet m_subnet;
};
using SubnetReservation = std::shared_ptr<SubnetReservationImpl>;
class SubnetPool
{
public:
static SubnetPool *instance();
std::vector<Subnet> candidates();
SubnetReservation reserve(const Subnet &subnet);
void free(const Subnet &subnet);
private:
SubnetPool();
SubnetPool(const std::vector<Subnet> &subnet);
QMutex m_lock;
std::vector<Subnet> m_candidates;
std::vector<Subnet> m_reserved;
};
SubnetReservation findUnusedSubnet();
std::pair<Subnet, bool> findUnusedSubnet(const std::vector<Subnet> &candidateSubnets,
const std::vector<Subnet> &usedSubnets);
#endif // SUBNET_H
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