join_threads.hpp

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#ifndef GUI_OBJUTILS___JOIN_THREADS__HPP
#define GUI_OBJUTILS___JOIN_THREADS__HPP
 
/*  $Id: join_threads.hpp 46345 2021-03-25 02:11:26Z asztalos $
 * ===========================================================================
 *
 *                            PUBLIC DOMAIN NOTICE
 *               National Center for Biotechnology Information
 *
 *  This software/database is a "United States Government Work" under the
 *  terms of the United States Copyright Act.  It was written as part of
 *  the author's official duties as a United States Government employee and
 *  thus cannot be copyrighted.  This software/database is freely available
 *  to the public for use. The National Library of Medicine and the U.S.
 *  Government have not placed any restriction on its use or reproduction.
 *
 *  Although all reasonable efforts have been taken to ensure the accuracy
 *  and reliability of the software and data, the NLM and the U.S.
 *  Government do not and cannot warrant the performance or results that
 *  may be obtained by using this software or data. The NLM and the U.S.
 *  Government disclaim all warranties, express or implied, including
 *  warranties of performance, merchantability or fitness for any particular
 *  purpose.
 *
 *  Please cite the author in any work or product based on this material.
 *
 * ===========================================================================
 *
 * Authors:  Andrea Asztalos
 *
 * File Description:
 *
 */
 
#include <corelib/ncbiobj.hpp>
#include <gui/gui_export.h>
#include <thread>
 
BEGIN_NCBI_SCOPE
 
//from C++ Concurrency in Action, Practical Multithreading by Anthony Williams (pg 248)
class NCBI_GUIOBJUTILS_EXPORT CJoinThreads
{
public:
    explicit CJoinThreads(vector<thread>& threads)
        : m_Threads(threads) {}
 
    ~CJoinThreads()
    {
        for (unsigned long i = 0; i < m_Threads.size(); ++i)
        {
            if (m_Threads[i].joinable())
                m_Threads[i].join();
        }
    }
private:
    vector<thread>& m_Threads;
};
 
 
END_NCBI_SCOPE
 
#endif  // GUI_OBJUTILS___JOIN_THREADS__HPP