lockable_object.h

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/*
    Beatmup image and signal processing library
    Copyright (C) 2019, lnstadrum
 
    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 3 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, see <http://www.gnu.org/licenses/>.
*/
 
#pragma once
#include "../basic_types.h"
#include <mutex>
 
namespace Beatmup {
    class LockableObject : public Object {
    private:
        std::mutex access;
    public:
        inline void lock() { access.lock(); }
 
        inline void unlock() { access.unlock(); }
 
        class LockGuard {
        private:
            LockableObject& obj;
        public:
            LockGuard(LockableObject& obj) : obj(obj)
            { obj.lock(); }
 
            LockGuard(LockableObject* obj) : LockGuard(*obj)
            {}
 
            ~LockGuard()
            { obj.unlock(); }
        };
    };
}