io_tasklist.h

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/*
 * Copyright (C) 2024 Robin Gareus <robin@gareus.org>
 *
 * 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 _ardour_io_tasklist_h_
#define _ardour_io_tasklist_h_
 
#include <atomic>
#include <boost/function.hpp>
#include <vector>
#include <glibmm/threads.h>
 
#include "pbd/semutils.h"
 
#include "ardour/libardour_visibility.h"
 
namespace ARDOUR
{
 
class LIBARDOUR_API IOTaskList
{
public:
        IOTaskList (uint32_t);
        ~IOTaskList ();
 
        void process ();
        void push_back (boost::function<void ()> fn);
 
private:
        static void* _worker_thread (void*);
 
        void io_thread ();
 
        std::vector<boost::function<void ()>> _tasks;
 
        uint32_t               _n_threads;
        std::atomic<uint32_t>  _n_workers;
        std::vector<pthread_t> _workers;
        std::atomic <bool>     _terminate;
        PBD::Semaphore         _exec_sem;
        PBD::Semaphore         _idle_sem;
        Glib::Threads::Mutex   _tasks_mutex;
};
 
} // namespace ARDOUR
#endif