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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This file copyright 2007 QMUL.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef SV_SERIALISER_H
#define SV_SERIALISER_H
#include <QString>
#include <QMutex>
#include <map>
#include <atomic>
namespace sv {
class Serialiser
{
public:
/**
* Construct a serialiser that takes the lock associated with the
* given id. That is, the constructor will only complete after all
* existing serialisers with the given id have been deleted.
*/
Serialiser(QString id);
/**
* Construct a cancellable serialiser that takes the lock
* associated with the given id. That is, the constructor will
* only complete when all existing serialisers with the given id
* have been deleted, or when the (occasionally polled) bool flag
* pointed to by cancelled has been found to be true.
*/
Serialiser(QString id, const std::atomic<bool> *cancelled);
/**
* Release the lock associated with the given id (if taken, rather
* than cancelled).
*/
~Serialiser();
QString getId() const { return m_id; }
protected:
QString m_id;
const std::atomic<bool> *m_cancelled;
bool m_locked;
static QMutex m_mapMutex;
static std::map<QString, QMutex *> m_mutexMap;
};
} // end namespace sv
#endif
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