Timer.hpp

/* ***** BEGIN LICENSE BLOCK *****
 * FW4SPL - Copyright (C) IRCAD, 2009-2017.
 * Distributed under the terms of the GNU Lesser General Public License (LGPL) as
 * published by the Free Software Foundation.
 * ****** END LICENSE BLOCK ****** */

#ifndef __FWTHREAD_TIMER_HPP__
#define __FWTHREAD_TIMER_HPP__

#include "fwThread/config.hpp"
#include "fwThread/Worker.hpp"

#include <fwCore/mt/types.hpp>

#include <functional>

namespace fwThread
{

class FWTHREAD_CLASS_API Timer : public ::fwCore::BaseObject
{
public:
    typedef std::shared_ptr< Timer >        sptr;
    typedef std::function< void () >         FunctionType;
    typedef std::chrono::duration<double>   TimeDurationType;
    FWTHREAD_API ~Timer();

    FWTHREAD_API virtual void start() = 0;

    FWTHREAD_API virtual void stop()
    {
    }

    FWTHREAD_API virtual void setDuration(TimeDurationType duration) = 0;

    template< typename F >
    void setFunction(F f)
    {
        ::fwCore::mt::ScopedLock lock(m_mutex);
        m_function = f;
        updatedFunction();
    }

    virtual bool isOneShot() const = 0;

    virtual void setOneShot(bool oneShot) = 0;

    virtual bool isRunning() const = 0;

protected:

    FWTHREAD_API Timer();

    Timer( const Timer& );

    Timer& operator=( const Timer& );

    FWTHREAD_API virtual void updatedFunction()
    {
    }

    FunctionType m_function;

    mutable ::fwCore::mt::Mutex m_mutex;
};

} //namespace fwThread

#endif //__FWTHREAD_TIMER_HPP__